<?xml version="1.0" encoding="UTF-8"?>
<projectDescription>
	<name>tcl8</name>
	<comment></comment>
	<projects>
	</projects>
	<buildSpec>
	</buildSpec>
	<natures>
	</natures>

\fBincr x\fR
.CE
.PP
The \fBincr\fR command first gets an integer from \fIx\fR's value
by calling \fBTcl_GetIntFromObj\fR.
This procedure checks whether the value is already an integer value.
Since it is not, it converts the value
by setting the value's internal representation
to the integer \fB123\fR
and setting the value's \fItypePtr\fR
to point to the integer Tcl_ObjType structure.
Both representations are now valid.
\fBincr\fR increments the value's integer internal representation
then invalidates its string representation
(by calling \fBTcl_InvalidateStringRep\fR)

value may then be passed back to one of \fBTcl_RestoreInterpState\fR
or \fBTcl_DiscardInterpState\fR, depending on whether the interp
state is to be restored.  So long as one of the latter two routines
is called, Tcl will take care of memory management.
.PP
The second triplet stores the snapshot of only the interpreter
result (not its complete state) in memory allocated by the caller.
These routines are passed a pointer to \fBTcl_SavedResult\fR
that is used to store enough information to restore the interpreter result.
\fBTcl_SavedResult\fR can be allocated on the stack of the calling
procedure.  These routines do not save the state of any error
information in the interpreter (e.g. the \fB\-errorcode\fR or
\fB\-errorinfo\fR return options, when an error is in progress).
.PP
Because the routines \fBTcl_SaveInterpState\fR,
\fBTcl_RestoreInterpState\fR, and \fBTcl_DiscardInterpState\fR perform
a superset of the functions provided by the other routines,

The variable \fBtcl_prompt2\fR is used in a similar way when
a newline is typed but the current command is not yet complete;
if \fBtcl_prompt2\fR is not set then no prompt is output for
incomplete commands.
.SH "STANDARD CHANNELS"
.PP
See \fBTcl_StandardChannels\fR for more explanations.
.SH ZIPVFS
.PP
When a zipfile is concatenated to the end of a \fBtclsh\fR, on
startup the contents of the zip archive will be mounted as the
virtual file system /zvfs. If a top level directory tcl8.6 is
present in the zip archive, it will become the directory loaded
as env(TCL_LIBRARY). If a file named \fBmain.tcl\fR is present
in the top level directory of the zip archive, it will be sourced
instead of the shell's normal command line handing.
.SH "SEE ALSO"
auto_path(n), encoding(n), env(n), fconfigure(n)
.SH KEYWORDS
application, argument, interpreter, prompt, script file, shell

'\"
'\" Copyright (c) 2015 Jan Nijtmans <jan.nijtmans@gmail.com>
'\" Copyright (c) 2015 Christian Werner <chw@ch-werner.de>
'\" Copyright (c) 2017 Sean Woods <yoda@etoyoc.com>
'\"
'\" See the file "license.terms" for information on usage and redistribution
'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
'\"
.TH Tclzipfs 3 8.7 Tcl "Tcl Library Procedures"
.so man.macros
.BS
.SH NAME
Tclzipfs_Mount, Tclzipfs_Unmount \- handle ZIP files as VFS
.SH SYNOPSIS
.nf
.sp
int
\fBTclzipfs_Mount\fR(\fIinterp, zipname, mntpt, passwd\fR)
.sp
int
\fBTclzipfs_Unmount\fR(\fIinterp, zipname\fR)
.SH ARGUMENTS
.AS Tcl_Interp **termPtr
.AP Tcl_Interp *interp in
Interpreter in which the zip file system is mounted.  The interpreter's result is
modified to hold the result or error message from the script.
.AP "const char" *zipname in
Name of a zipfile.
.AP "const char" *mntpt in
Name of a mount point.
.AP "const char" *passwd in
An (optional) password.
.BE
.SH DESCRIPTION
\fBTclzipfs_Mount()\fR mount the ZIP archive \fIzipname\fR on the mount
point given in \fImntpt\fR using the optional ZIP password \fIpasswd\fR.
Errors during that process are reported in the interpreter \fIinterp\fR.
If \fIzipname\fR is a NULL pointer, information on all currently mounted
ZIP file systems is written into \fIinterp\fR's result as a sequence of
mount points and ZIP file names.
.PP
\fBTclzipfs_Unmount()\fR undoes the effect of \fBTclzipfs_Mount()\fR,
i.e. it unmounts the mounted ZIP archive file \fIzipname\fR. Errors are
reported in the interpreter \fIinterp\fR.
.SH KEYWORDS
compress, filesystem, zip

'\"
'\" Copyright (c) 2015 Jan Nijtmans <jan.nijtmans@gmail.com>
'\" Copyright (c) 2015 Christian Werner <chw@ch-werner.de>
'\" Copyright (c) 2015 Sean Woods <yoda@etoyoc.com>
'\"
'\" See the file "license.terms" for information on usage and redistribution
'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
'\"
.TH zipfs n 1.0 Zipfs "zipfs Commands"
.so man.macros
.BS
'\" Note:  do not modify the .SH NAME line immediately below!
.SH NAME
zipfs \- Mount and work with ZIP files within Tcl
.SH SYNOPSIS
.nf
\fBpackage require zipfs \fR?\fB1.0\fR?
.sp
\fBzipfs exists\fR \fIfilename\fR
\fBzipfs find\fR \fIdir\fR
\fBzipfs info\fR \fIfilename\fR
\fBzipfs list\fR \fB?(-glob|-regexp)?\fR \fI?pattern?\fR
\fBzipfs mkimg\fR \fIoutfile\fR \fIindir\fR \fI?strip?\fR \fI?password?\fR \fI?infile?\fR
\fBzipfs mkkey\fR \fIpassword\fR
\fBzipfs mkzip\fR \fIoutfile\fR \fIindir\fR \fI?strip?\fR \fI?password?\fR
\fBzipfs mount\fR \fI?zipfile?\fR \fI?mountpoint?\fR \fI?password?\fR
\fBzipfs unmount\fR \fIzipfile\fR
.fi
.BE
.SH DESCRIPTION
.PP
The \fBzipfs\fR package provides tcl with the ability to mount
the contents of a zip file as a virtual file system.
.TP
\fBzipfs exists\fR \fIfilename\fR
.
Return 1 if the given filename exists in the mounted zipfs and 0 if it does not.
.TP
\fBzipfs find\fR \fIdir\fR
.
Recursively lists files including and below the directory \fIdir\fR.
The result list consists of relative path names starting from the
given directory. This command is also used by the \fBzipfs mkzip\fR
and \fBzipfs mkimg\fR commands. 
.TP
\fBzipfs info\fR \fIfile\fR
.
Return information about the given file in the mounted zipfs.  The information
consists of (1) the name of the ZIP archive file that contains the file,
(2) the size of the file after decompressions, (3) the compressed size of
the file, and (4) the offset of the compressed data in the ZIP archive file.
.RS
.PP
Note: querying the mount point gives the start of zip data offset in (4),
which can be used to truncate the zip info off an executable.
.RE
.TP
\fBzipfs list\fR \fB?(-glob|-regexp)?\fR \fI?pattern?\fR
.
Return a list of all files in the mounted zipfs.  The order of the names
in the list is arbitrary.
.TP
\fBzipfs mkimg\fR \fIoutfile\fR \fIindir\fR \fI?strip?\fR \fI?password?\fR \fI?infile?\fR
.
Creates an image (potentially a new executable file) similar to
\fBzipfs mkzip\fR. If the \fIinfile\fR parameter is specified,
this file is prepended in front of the ZIP archive, otherwise the file
returned by \fBTcl_NameOfExecutable(3)\fR (i.e. the executable file of
the running process) is used. If the \fIpassword\fR parameter is not empty,
an obfuscated version of that password is placed between the image and ZIP
chunks of the output file and the contents of the ZIP chunk are protected
with that password.
.RS
.PP
Caution: highly experimental, not usable on Android, only partially tested
on Linux and Windows.
.RE
.TP
\fBzipfs mkkey\fR \fIpassword\fR
.
For the clear text \fIpassword\fR argument an obfuscated string version
is returned with the same format used in the \fBzipfs mkimg\fR command.
.TP
\fBzipfs mkzip\fR \fIoutfile\fR \fIindir\fR \fI?strip?\fR \fI?password?\fR
.
Creates a ZIP archive file named \fIoutfile\fR from the contents of the input
directory \fIindir\fR (contained regular files only) with optional ZIP
password \fIpassword\fR. While processing the files below \fIindir\fR the
optional file name prefix given in \fIstrip\fR is stripped off the beginning
of the respective file name.
.RS
.PP
Caution: the choice of the \fIindir\fR parameter
(less the optional stripped prefix) determines the later root name of the
archive's content. 
.RE
.TP
\fBzipfs mount ?\fIzipfile\fR? ?\fImountpoint\fR? ?\fIpassword\fR?
.
The \fBzipfs mount\fR command mounts a ZIP archive file as a VFS.
After this command executes, files contained in \fIzipfile\fR
will appear to Tcl to be regular files at the mount point.
.RS
.PP
With no \fImountpoint\fR, returns the mount point for \fIzipfile\fR.
With no \fIzipfile\fR, return all zipfile/mount pairs.
If \fImountpoint\fR is specified as an empty string, mount on file path.
.RE
.TP
\fBzipfs unmount \fIzipfile\fR
.
Unmounts a previously mounted ZIP archive file \fIzipfile\fR.
.SH "SEE ALSO"
tclsh(1), file(n), zlib(n)
.SH "KEYWORDS"
compress, filesystem, zip
'\" Local Variables:
'\" mode: nroff
'\" End:

}
declare 128 {
    CONST84_RETURN char *Tcl_ErrnoMsg(int err)
}
declare 129 {
    int Tcl_Eval(Tcl_Interp *interp, const char *script)
}

declare 130 {
    int Tcl_EvalFile(Tcl_Interp *interp, const char *fileName)
}
declare 131 {
    int Tcl_EvalObj(Tcl_Interp *interp, Tcl_Obj *objPtr)
}
declare 132 {

}
declare 218 {
    int Tcl_ScanElement(const char *src, int *flagPtr)
}
declare 219 {
    int Tcl_ScanCountedElement(const char *src, int length, int *flagPtr)
}

declare 220 {deprecated {}} {
    int Tcl_SeekOld(Tcl_Channel chan, int offset, int mode)
}
declare 221 {
    int Tcl_ServiceAll(void)
}
declare 222 {
    int Tcl_ServiceEvent(int flags)

declare 244 {
    void Tcl_StaticPackage(Tcl_Interp *interp, const char *pkgName,
	    Tcl_PackageInitProc *initProc, Tcl_PackageInitProc *safeInitProc)
}
declare 245 {
    int Tcl_StringMatch(const char *str, const char *pattern)
}

declare 246 {deprecated {}} {
    int Tcl_TellOld(Tcl_Channel chan)
}
declare 247 {
    int Tcl_TraceVar(Tcl_Interp *interp, const char *varName, int flags,
	    Tcl_VarTraceProc *proc, ClientData clientData)
}
declare 248 {

}
declare 265 {
    int Tcl_DumpActiveMemory(const char *fileName)
}
declare 266 {
    void Tcl_ValidateAllMemory(const char *file, int line)
}
declare 267 {deprecated {see TIP #422}} {
    void Tcl_AppendResultVA(Tcl_Interp *interp, va_list argList)
}
declare 268 {deprecated {see TIP #422}} {
    void Tcl_AppendStringsToObjVA(Tcl_Obj *objPtr, va_list argList)
}
declare 269 {
    char *Tcl_HashStats(Tcl_HashTable *tablePtr)
}
declare 270 {
    CONST84_RETURN char *Tcl_ParseVar(Tcl_Interp *interp, const char *start,

	    const char *version)
}
# TIP #268: The internally used new Require function is in slot 573.
declare 274 {
    CONST84_RETURN char *Tcl_PkgRequire(Tcl_Interp *interp, const char *name,
	    const char *version, int exact)
}
declare 275 {deprecated {see TIP #422}} {
    void Tcl_SetErrorCodeVA(Tcl_Interp *interp, va_list argList)
}
declare 276 {deprecated {see TIP #422}} {
    int  Tcl_VarEvalVA(Tcl_Interp *interp, va_list argList)
}
declare 277 {
    Tcl_Pid Tcl_WaitPid(Tcl_Pid pid, int *statPtr, int options)
}
declare 278 {deprecated {see TIP #422}} {
    TCL_NORETURN void Tcl_PanicVA(const char *format, va_list argList)
}
declare 279 {
    void Tcl_GetVersion(int *major, int *minor, int *patchLevel, int *type)
}
declare 280 {
    void Tcl_InitMemory(Tcl_Interp *interp)

    Tcl_Channel Tcl_OpenTcpServerEx(Tcl_Interp *interp, const char *service,
	    const char *host, unsigned int flags, Tcl_TcpAcceptProc *acceptProc,
	    ClientData callbackData)
}

# ----- BASELINE -- FOR -- 8.7.0 ----- #

# TIP #430
declare 632 {
    int TclZipfs_Mount(Tcl_Interp *interp, const char *zipname, const char *mntpt,
      const char *passwd)
}
declare 633 {
    int TclZipfs_Unmount(Tcl_Interp *interp, const char *zipname)
}
declare 634 {
    int TclZipfs_AppHook(int *argc, char ***argv)
}
##############################################################################

# Define the platform specific public Tcl interface. These functions are only
# available on the designated platform.

interface tclPlat

 * dictionaries. These fields should not be accessed by code outside
 * tclDictObj.c
 */

typedef struct {
    void *next;			/* Search position for underlying hash
				 * table. */
    unsigned int epoch; 	/* Epoch marker for dictionary being searched,
				 * or 0 if search has terminated. */
    Tcl_Dict dictionaryPtr;	/* Reference to dictionary being searched. */
} Tcl_DictSearch;

/*
 *----------------------------------------------------------------------------
 * Flag values to pass to Tcl_DoOneEvent to disable searches for some kinds of
 * events:

const char *		Tcl_InitStubs(Tcl_Interp *interp, const char *version,
			    int exact, int magic);
const char *		TclTomMathInitializeStubs(Tcl_Interp *interp,
			    const char *version, int epoch, int revision);

#ifdef USE_TCL_STUBS
#if TCL_RELEASE_LEVEL == TCL_FINAL_RELEASE
#   define Tcl_InitStubs(interp, version, exact) \
	(Tcl_InitStubs)(interp, version, \
	    (exact)|(TCL_MAJOR_VERSION<<8)|(TCL_MINOR_VERSION<<16), \
	    TCL_STUB_MAGIC)
#else
#   define Tcl_InitStubs(interp, version, exact) \
	(Tcl_InitStubs)(interp, TCL_PATCH_LEVEL, \
	    1|(TCL_MAJOR_VERSION<<8)|(TCL_MINOR_VERSION<<16), \
	    TCL_STUB_MAGIC)
#endif
#else
#if TCL_RELEASE_LEVEL == TCL_FINAL_RELEASE
#   define Tcl_InitStubs(interp, version, exact) \
	Tcl_PkgInitStubsCheck(interp, version, \
		(exact)|(TCL_MAJOR_VERSION<<8)|(TCL_MINOR_VERSION<<16))
#else
#   define Tcl_InitStubs(interp, version, exact) \
	Tcl_PkgInitStubsCheck(interp, TCL_PATCH_LEVEL, \
		1|(TCL_MAJOR_VERSION<<8)|(TCL_MINOR_VERSION<<16))
#endif
#endif

/*
 * Public functions that are not accessible via the stubs table.
 * Tcl_GetMemoryInfo is needed for AOLserver. [Bug 1868171]
 */

     * compile and link against.
     */

#ifdef HAVE_ZLIB
    if (TclZlibInit(interp) != TCL_OK) {
	Tcl_Panic("%s", TclGetString(Tcl_GetObjResult(interp)));
    }
    if (TclZipfs_Init(interp) != TCL_OK) {
	Tcl_Panic("%s", Tcl_GetString(Tcl_GetObjResult(interp)));
    }
#endif

    TOP_CB(iPtr) = NULL;
    return interp;
}

static void

	return TCL_ERROR;
    }

    if (!(iPtr->flags & RAND_SEED_INITIALIZED)) {
	iPtr->flags |= RAND_SEED_INITIALIZED;

	/*
	 * To ensure different seeds in different threads (bug #416643),
	 * take into consideration the thread this interp is running in.
	 */

	iPtr->randSeed = TclpGetClicks() + (PTR2INT(Tcl_GetCurrentThread())<<12);

	/*
	 * Make sure 1 <= randSeed <= (2^31) - 2. See below.

	 * start of the string unless the previous character is a newline.
	 */

	if (offset == 0) {
	    eflags = 0;
	} else if (offset > stringLength) {
	    eflags = TCL_REG_NOTBOL;
	} else if (Tcl_GetUniChar(objPtr, offset-1) == '\n') {
	    eflags = 0;
	} else {
	    eflags = TCL_REG_NOTBOL;
	}

	match = Tcl_RegExpExecObj(interp, regExpr, objPtr, offset,
		numMatchesSaved, eflags);

	 * is a *major* win when splitting on a long string (especially in the
	 * megabyte range!) - DKF
	 */

	Tcl_InitHashTable(&charReuseTable, TCL_ONE_WORD_KEYS);

	for ( ; stringPtr < end; stringPtr += len) {
		int fullchar;
	    len = TclUtfToUniChar(stringPtr, &ch);
	    fullchar = ch;

#if TCL_UTF_MAX == 4
	    if (!len) {
		len += TclUtfToUniChar(stringPtr, &ch);
		fullchar = (((fullchar & 0x3ff) << 10) | (ch & 0x3ff)) + 0x10000;
	    }
#endif

	    /*
	     * Assume Tcl_UniChar is an integral type...
	     */

	    hPtr = Tcl_CreateHashEntry(&charReuseTable, INT2PTR(fullchar),
		    &isNew);
	    if (isNew) {
		TclNewStringObj(objPtr, stringPtr, len);

		/*
		 * Don't need to fiddle with refcount...
		 */

	    if (strict) {
		result = 0;
	    }
	    goto str_is_done;
	}
	end = string1 + length1;
	for (; string1 < end; string1 += length2, failat++) {
	    int fullchar;
	    length2 = TclUtfToUniChar(string1, &ch);
	    fullchar = ch;
#if TCL_UTF_MAX == 4
	    if (!length2) {
	    	length2 = TclUtfToUniChar(string1, &ch);
	    	fullchar = (((fullchar & 0x3ff) << 10) | (ch & 0x3ff)) + 0x10000;
	    }
#endif
	    if (!chcomp(fullchar)) {
		result = 0;
		break;
	    }
	}
    }

    /*

EXTERN void		Tcl_ResetResult(Tcl_Interp *interp);
/* 218 */
EXTERN int		Tcl_ScanElement(const char *src, int *flagPtr);
/* 219 */
EXTERN int		Tcl_ScanCountedElement(const char *src, int length,
				int *flagPtr);
/* 220 */
TCL_DEPRECATED("")
int			Tcl_SeekOld(Tcl_Channel chan, int offset, int mode);
/* 221 */
EXTERN int		Tcl_ServiceAll(void);
/* 222 */
EXTERN int		Tcl_ServiceEvent(int flags);
/* 223 */
EXTERN void		Tcl_SetAssocData(Tcl_Interp *interp,
				const char *name, Tcl_InterpDeleteProc *proc,

EXTERN void		Tcl_StaticPackage(Tcl_Interp *interp,
				const char *pkgName,
				Tcl_PackageInitProc *initProc,
				Tcl_PackageInitProc *safeInitProc);
/* 245 */
EXTERN int		Tcl_StringMatch(const char *str, const char *pattern);
/* 246 */
TCL_DEPRECATED("")
int			Tcl_TellOld(Tcl_Channel chan);
/* 247 */
EXTERN int		Tcl_TraceVar(Tcl_Interp *interp, const char *varName,
				int flags, Tcl_VarTraceProc *proc,
				ClientData clientData);
/* 248 */
EXTERN int		Tcl_TraceVar2(Tcl_Interp *interp, const char *part1,
				const char *part2, int flags,

EXTERN void		Tcl_WrongNumArgs(Tcl_Interp *interp, int objc,
				Tcl_Obj *const objv[], const char *message);
/* 265 */
EXTERN int		Tcl_DumpActiveMemory(const char *fileName);
/* 266 */
EXTERN void		Tcl_ValidateAllMemory(const char *file, int line);
/* 267 */
TCL_DEPRECATED("see TIP #422")
void			Tcl_AppendResultVA(Tcl_Interp *interp,
				va_list argList);
/* 268 */
TCL_DEPRECATED("see TIP #422")
void			Tcl_AppendStringsToObjVA(Tcl_Obj *objPtr,
				va_list argList);
/* 269 */
EXTERN char *		Tcl_HashStats(Tcl_HashTable *tablePtr);
/* 270 */
EXTERN CONST84_RETURN char * Tcl_ParseVar(Tcl_Interp *interp,
				const char *start, CONST84 char **termPtr);
/* 271 */

EXTERN int		Tcl_PkgProvide(Tcl_Interp *interp, const char *name,
				const char *version);
/* 274 */
EXTERN CONST84_RETURN char * Tcl_PkgRequire(Tcl_Interp *interp,
				const char *name, const char *version,
				int exact);
/* 275 */
TCL_DEPRECATED("see TIP #422")
void			Tcl_SetErrorCodeVA(Tcl_Interp *interp,
				va_list argList);
/* 276 */
TCL_DEPRECATED("see TIP #422")
int			Tcl_VarEvalVA(Tcl_Interp *interp, va_list argList);
/* 277 */
EXTERN Tcl_Pid		Tcl_WaitPid(Tcl_Pid pid, int *statPtr, int options);
/* 278 */
TCL_DEPRECATED("see TIP #422")
TCL_NORETURN void	Tcl_PanicVA(const char *format, va_list argList);
/* 279 */
EXTERN void		Tcl_GetVersion(int *major, int *minor,
				int *patchLevel, int *type);
/* 280 */
EXTERN void		Tcl_InitMemory(Tcl_Interp *interp);
/* 281 */
EXTERN Tcl_Channel	Tcl_StackChannel(Tcl_Interp *interp,

				Tcl_Obj *compressionDictionaryObj);
/* 631 */
EXTERN Tcl_Channel	Tcl_OpenTcpServerEx(Tcl_Interp *interp,
				const char *service, const char *host,
				unsigned int flags,
				Tcl_TcpAcceptProc *acceptProc,
				ClientData callbackData);
/* 632 */
EXTERN int		TclZipfs_Mount(Tcl_Interp *interp,
				const char *zipname, const char *mntpt,
				const char *passwd);
/* 633 */
EXTERN int		TclZipfs_Unmount(Tcl_Interp *interp,
				const char *zipname);
/* 634 */
EXTERN int		TclZipfs_AppHook(int *argc, char ***argv);

typedef struct {
    const struct TclPlatStubs *tclPlatStubs;
    const struct TclIntStubs *tclIntStubs;
    const struct TclIntPlatStubs *tclIntPlatStubs;
} TclStubHooks;

    int (*tcl_RegExpExec) (Tcl_Interp *interp, Tcl_RegExp regexp, const char *text, const char *start); /* 213 */
    int (*tcl_RegExpMatch) (Tcl_Interp *interp, const char *text, const char *pattern); /* 214 */
    void (*tcl_RegExpRange) (Tcl_RegExp regexp, int index, CONST84 char **startPtr, CONST84 char **endPtr); /* 215 */
    void (*tcl_Release) (ClientData clientData); /* 216 */
    void (*tcl_ResetResult) (Tcl_Interp *interp); /* 217 */
    int (*tcl_ScanElement) (const char *src, int *flagPtr); /* 218 */
    int (*tcl_ScanCountedElement) (const char *src, int length, int *flagPtr); /* 219 */
    TCL_DEPRECATED_API("") int (*tcl_SeekOld) (Tcl_Channel chan, int offset, int mode); /* 220 */
    int (*tcl_ServiceAll) (void); /* 221 */
    int (*tcl_ServiceEvent) (int flags); /* 222 */
    void (*tcl_SetAssocData) (Tcl_Interp *interp, const char *name, Tcl_InterpDeleteProc *proc, ClientData clientData); /* 223 */
    void (*tcl_SetChannelBufferSize) (Tcl_Channel chan, int sz); /* 224 */
    int (*tcl_SetChannelOption) (Tcl_Interp *interp, Tcl_Channel chan, const char *optionName, const char *newValue); /* 225 */
    int (*tcl_SetCommandInfo) (Tcl_Interp *interp, const char *cmdName, const Tcl_CmdInfo *infoPtr); /* 226 */
    void (*tcl_SetErrno) (int err); /* 227 */

    CONST84_RETURN char * (*tcl_SignalId) (int sig); /* 239 */
    CONST84_RETURN char * (*tcl_SignalMsg) (int sig); /* 240 */
    void (*tcl_SourceRCFile) (Tcl_Interp *interp); /* 241 */
    int (*tcl_SplitList) (Tcl_Interp *interp, const char *listStr, int *argcPtr, CONST84 char ***argvPtr); /* 242 */
    void (*tcl_SplitPath) (const char *path, int *argcPtr, CONST84 char ***argvPtr); /* 243 */
    void (*tcl_StaticPackage) (Tcl_Interp *interp, const char *pkgName, Tcl_PackageInitProc *initProc, Tcl_PackageInitProc *safeInitProc); /* 244 */
    int (*tcl_StringMatch) (const char *str, const char *pattern); /* 245 */
    TCL_DEPRECATED_API("") int (*tcl_TellOld) (Tcl_Channel chan); /* 246 */
    int (*tcl_TraceVar) (Tcl_Interp *interp, const char *varName, int flags, Tcl_VarTraceProc *proc, ClientData clientData); /* 247 */
    int (*tcl_TraceVar2) (Tcl_Interp *interp, const char *part1, const char *part2, int flags, Tcl_VarTraceProc *proc, ClientData clientData); /* 248 */
    char * (*tcl_TranslateFileName) (Tcl_Interp *interp, const char *name, Tcl_DString *bufferPtr); /* 249 */
    int (*tcl_Ungets) (Tcl_Channel chan, const char *str, int len, int atHead); /* 250 */
    void (*tcl_UnlinkVar) (Tcl_Interp *interp, const char *varName); /* 251 */
    int (*tcl_UnregisterChannel) (Tcl_Interp *interp, Tcl_Channel chan); /* 252 */
    int (*tcl_UnsetVar) (Tcl_Interp *interp, const char *varName, int flags); /* 253 */
    int (*tcl_UnsetVar2) (Tcl_Interp *interp, const char *part1, const char *part2, int flags); /* 254 */
    void (*tcl_UntraceVar) (Tcl_Interp *interp, const char *varName, int flags, Tcl_VarTraceProc *proc, ClientData clientData); /* 255 */
    void (*tcl_UntraceVar2) (Tcl_Interp *interp, const char *part1, const char *part2, int flags, Tcl_VarTraceProc *proc, ClientData clientData); /* 256 */
    void (*tcl_UpdateLinkedVar) (Tcl_Interp *interp, const char *varName); /* 257 */
    int (*tcl_UpVar) (Tcl_Interp *interp, const char *frameName, const char *varName, const char *localName, int flags); /* 258 */
    int (*tcl_UpVar2) (Tcl_Interp *interp, const char *frameName, const char *part1, const char *part2, const char *localName, int flags); /* 259 */
    int (*tcl_VarEval) (Tcl_Interp *interp, ...); /* 260 */
    ClientData (*tcl_VarTraceInfo) (Tcl_Interp *interp, const char *varName, int flags, Tcl_VarTraceProc *procPtr, ClientData prevClientData); /* 261 */
    ClientData (*tcl_VarTraceInfo2) (Tcl_Interp *interp, const char *part1, const char *part2, int flags, Tcl_VarTraceProc *procPtr, ClientData prevClientData); /* 262 */
    int (*tcl_Write) (Tcl_Channel chan, const char *s, int slen); /* 263 */
    void (*tcl_WrongNumArgs) (Tcl_Interp *interp, int objc, Tcl_Obj *const objv[], const char *message); /* 264 */
    int (*tcl_DumpActiveMemory) (const char *fileName); /* 265 */
    void (*tcl_ValidateAllMemory) (const char *file, int line); /* 266 */
    TCL_DEPRECATED_API("see TIP #422") void (*tcl_AppendResultVA) (Tcl_Interp *interp, va_list argList); /* 267 */
    TCL_DEPRECATED_API("see TIP #422") void (*tcl_AppendStringsToObjVA) (Tcl_Obj *objPtr, va_list argList); /* 268 */
    char * (*tcl_HashStats) (Tcl_HashTable *tablePtr); /* 269 */
    CONST84_RETURN char * (*tcl_ParseVar) (Tcl_Interp *interp, const char *start, CONST84 char **termPtr); /* 270 */
    CONST84_RETURN char * (*tcl_PkgPresent) (Tcl_Interp *interp, const char *name, const char *version, int exact); /* 271 */
    CONST84_RETURN char * (*tcl_PkgPresentEx) (Tcl_Interp *interp, const char *name, const char *version, int exact, void *clientDataPtr); /* 272 */
    int (*tcl_PkgProvide) (Tcl_Interp *interp, const char *name, const char *version); /* 273 */
    CONST84_RETURN char * (*tcl_PkgRequire) (Tcl_Interp *interp, const char *name, const char *version, int exact); /* 274 */
    TCL_DEPRECATED_API("see TIP #422") void (*tcl_SetErrorCodeVA) (Tcl_Interp *interp, va_list argList); /* 275 */
    TCL_DEPRECATED_API("see TIP #422") int (*tcl_VarEvalVA) (Tcl_Interp *interp, va_list argList); /* 276 */
    Tcl_Pid (*tcl_WaitPid) (Tcl_Pid pid, int *statPtr, int options); /* 277 */
    TCL_DEPRECATED_API("see TIP #422") TCL_NORETURN1 void (*tcl_PanicVA) (const char *format, va_list argList); /* 278 */
    void (*tcl_GetVersion) (int *major, int *minor, int *patchLevel, int *type); /* 279 */
    void (*tcl_InitMemory) (Tcl_Interp *interp); /* 280 */
    Tcl_Channel (*tcl_StackChannel) (Tcl_Interp *interp, const Tcl_ChannelType *typePtr, ClientData instanceData, int mask, Tcl_Channel prevChan); /* 281 */
    int (*tcl_UnstackChannel) (Tcl_Interp *interp, Tcl_Channel chan); /* 282 */
    Tcl_Channel (*tcl_GetStackedChannel) (Tcl_Channel chan); /* 283 */
    void (*tcl_SetMainLoop) (Tcl_MainLoopProc *proc); /* 284 */
    void (*reserved285)(void);

    int (*tcl_NRExprObj) (Tcl_Interp *interp, Tcl_Obj *objPtr, Tcl_Obj *resultPtr); /* 625 */
    int (*tcl_NRSubstObj) (Tcl_Interp *interp, Tcl_Obj *objPtr, int flags); /* 626 */
    int (*tcl_LoadFile) (Tcl_Interp *interp, Tcl_Obj *pathPtr, const char *const symv[], int flags, void *procPtrs, Tcl_LoadHandle *handlePtr); /* 627 */
    void * (*tcl_FindSymbol) (Tcl_Interp *interp, Tcl_LoadHandle handle, const char *symbol); /* 628 */
    int (*tcl_FSUnloadFile) (Tcl_Interp *interp, Tcl_LoadHandle handlePtr); /* 629 */
    void (*tcl_ZlibStreamSetCompressionDictionary) (Tcl_ZlibStream zhandle, Tcl_Obj *compressionDictionaryObj); /* 630 */
    Tcl_Channel (*tcl_OpenTcpServerEx) (Tcl_Interp *interp, const char *service, const char *host, unsigned int flags, Tcl_TcpAcceptProc *acceptProc, ClientData callbackData); /* 631 */
    int (*tclZipfs_Mount) (Tcl_Interp *interp, const char *zipname, const char *mntpt, const char *passwd); /* 632 */
    int (*tclZipfs_Unmount) (Tcl_Interp *interp, const char *zipname); /* 633 */
    int (*tclZipfs_AppHook) (int *argc, char ***argv); /* 634 */
} TclStubs;

extern const TclStubs *tclStubsPtr;

#ifdef __cplusplus
}
#endif

	(tclStubsPtr->tcl_FindSymbol) /* 628 */
#define Tcl_FSUnloadFile \
	(tclStubsPtr->tcl_FSUnloadFile) /* 629 */
#define Tcl_ZlibStreamSetCompressionDictionary \
	(tclStubsPtr->tcl_ZlibStreamSetCompressionDictionary) /* 630 */
#define Tcl_OpenTcpServerEx \
	(tclStubsPtr->tcl_OpenTcpServerEx) /* 631 */
#define TclZipfs_Mount \
	(tclStubsPtr->tclZipfs_Mount) /* 632 */
#define TclZipfs_Unmount \
	(tclStubsPtr->tclZipfs_Unmount) /* 633 */
#define TclZipfs_AppHook \
	(tclStubsPtr->tclZipfs_AppHook) /* 634 */

#endif /* defined(USE_TCL_STUBS) */

/* !END!: Do not edit above this line. */

#if defined(USE_TCL_STUBS)
#   undef Tcl_CreateInterp

				 * dictionary. Used for doing traversal of the
				 * entries in the order that they are
				 * created. */
    ChainEntry *entryChainTail;	/* Other end of linked list of all entries in
				 * the dictionary. Used for doing traversal of
				 * the entries in the order that they are
				 * created. */
    unsigned int epoch; 	/* Epoch counter */
    size_t refCount;		/* Reference counter (see above) */
    Tcl_Obj *chain;		/* Linked list used for invalidating the
				 * string representations of updated nested
				 * dictionaries. */
} Dict;

/*

	Tcl_IncrRefCount(valuePtr);
    }

    /*
     * Initialise other fields.
     */

    newDict->epoch = 1;
    newDict->chain = NULL;
    newDict->refCount = 1;

    /*
     * Store in the object.
     */

 *----------------------------------------------------------------------
 */

static void
UpdateStringOfDict(
    Tcl_Obj *dictPtr)
{
#define LOCAL_SIZE 64
    char localFlags[LOCAL_SIZE], *flagPtr = NULL;
    Dict *dict = DICT(dictPtr);
    ChainEntry *cPtr;
    Tcl_Obj *keyPtr, *valuePtr;
    int i, length, bytesNeeded = 0;
    const char *elem;
    char *dst;


    /*
     * This field is the most useful one in the whole hash structure, and it
     * is not exposed by any API function...
     */

    int numElems = dict->table.numEntries * 2;

    /*
     * Pass 1: estimate space, gather flags.
     */

    if (numElems <= LOCAL_SIZE) {
	flagPtr = localFlags;


    } else {
	flagPtr = ckalloc(numElems);
    }
    for (i=0,cPtr=dict->entryChainHead; i<numElems; i+=2,cPtr=cPtr->nextPtr) {
	/*
	 * Assume that cPtr is never NULL since we know the number of array
	 * elements already.
	 */

    /*
     * Free the old internalRep before setting the new one. We do this as late
     * as possible to allow the conversion code, in particular
     * Tcl_GetStringFromObj, to use that old internalRep.
     */

    TclFreeIntRep(objPtr);
    dict->epoch = 1;
    dict->chain = NULL;
    dict->refCount = 1;
    DICT(objPtr) = dict;
    objPtr->internalRep.twoPtrValue.ptr2 = NULL;
    objPtr->typePtr = &tclDictType;
    return TCL_OK;

	    && SetDictFromAny(interp, dictPtr) != TCL_OK) {
	return TCL_ERROR;
    }

    dict = DICT(dictPtr);
    cPtr = dict->entryChainHead;
    if (cPtr == NULL) {
	searchPtr->epoch = 0;
	*donePtr = 1;
    } else {
	*donePtr = 0;
	searchPtr->dictionaryPtr = (Tcl_Dict) dict;
	searchPtr->epoch = dict->epoch;
	searchPtr->next = cPtr->nextPtr;
	dict->refCount++;

{
    ChainEntry *cPtr;

    /*
     * If the searh is done; we do no work.
     */

    if (!searchPtr->epoch) {
	*donePtr = 1;
	return;
    }

    /*
     * Bail out if the dictionary has had any elements added, modified or
     * removed. This *shouldn't* happen, but...

void
Tcl_DictObjDone(
    Tcl_DictSearch *searchPtr)		/* Pointer to a hash search context. */
{
    Dict *dict;

    if (searchPtr->epoch) {
	searchPtr->epoch = 0;
	dict = (Dict *) searchPtr->dictionaryPtr;
	if (dict->refCount-- <= 1) {
	    DeleteDict(dict);
	}
    }
}


    Tcl_Obj *dictPtr;
    Dict *dict;

    TclNewObj(dictPtr);
    TclInvalidateStringRep(dictPtr);
    dict = ckalloc(sizeof(Dict));
    InitChainTable(dict);
    dict->epoch = 1;
    dict->chain = NULL;
    dict->refCount = 1;
    DICT(dictPtr) = dict;
    dictPtr->internalRep.twoPtrValue.ptr2 = NULL;
    dictPtr->typePtr = &tclDictType;
    return dictPtr;
#endif

    Tcl_Obj *dictPtr;
    Dict *dict;

    TclDbNewObj(dictPtr, file, line);
    TclInvalidateStringRep(dictPtr);
    dict = ckalloc(sizeof(Dict));
    InitChainTable(dict);
    dict->epoch = 1;
    dict->chain = NULL;
    dict->refCount = 1;
    DICT(dictPtr) = dict;
    dictPtr->internalRep.twoPtrValue.ptr2 = NULL;
    dictPtr->typePtr = &tclDictType;
    return dictPtr;
#else /* !TCL_MEM_DEBUG */

void *
TclStackAlloc(
    Tcl_Interp *interp,
    int numBytes)
{
    Interp *iPtr = (Interp *) interp;
    int numWords;

    if (iPtr == NULL || iPtr->execEnvPtr == NULL) {
	return (void *) ckalloc(numBytes);
    }
    numWords = (numBytes + (sizeof(Tcl_Obj *) - 1))/sizeof(Tcl_Obj *);
    return (void *) StackAllocWords(interp, numWords);
}

void *
TclStackRealloc(
    Tcl_Interp *interp,
    void *ptr,

	 * ':' no longer needed as a separator. It is only relevant to the
	 * beginning of the path.
	 */

	separators = "/\\";

    } else if (tclPlatform == TCL_PLATFORM_UNIX) {
	if (pathPrefix == NULL && tail[0] == '/' && tail[1] != '/') {
	    pathPrefix = Tcl_NewStringObj(tail, 1);
	    tail++;
	    Tcl_IncrRefCount(pathPrefix);
	}
    }

    /*

 *----------------------------------------------------------------------
 */

static void
RebuildTable(
    register Tcl_HashTable *tablePtr)	/* Table to enlarge. */
{
    int count, index, oldSize = tablePtr->numBuckets;
    Tcl_HashEntry **oldBuckets = tablePtr->buckets;
    register Tcl_HashEntry **oldChainPtr, **newChainPtr;
    register Tcl_HashEntry *hPtr;
    const Tcl_HashKeyType *typePtr;

    /* Avoid outgrowing capability of the memory allocators */
    if (oldSize > (int)(UINT_MAX / (4 * sizeof(Tcl_HashEntry *)))) {
	tablePtr->rebuildSize = INT_MAX;
	return;
    }

    if (tablePtr->keyType == TCL_STRING_KEYS) {
	typePtr = &tclStringHashKeyType;
    } else if (tablePtr->keyType == TCL_ONE_WORD_KEYS) {
	typePtr = &tclOneWordHashKeyType;
    } else if (tablePtr->keyType == TCL_CUSTOM_TYPE_KEYS
	    || tablePtr->keyType == TCL_CUSTOM_PTR_KEYS) {
	typePtr = tablePtr->typePtr;
    } else {
	typePtr = &tclArrayHashKeyType;
    }




    /*
     * Allocate and initialize the new bucket array, and set up hashing
     * constants for new array size.
     */

    tablePtr->numBuckets *= 4;
    if (typePtr->flags & TCL_HASH_KEY_SYSTEM_HASH) {

    }
    Tcl_DStringInit(cwdPtr);
    TclDStringAppendObj(cwdPtr, cwd);
    Tcl_DecrRefCount(cwd);
    return Tcl_DStringValue(cwdPtr);
}


int
Tcl_EvalFile(
    Tcl_Interp *interp,		/* Interpreter in which to process file. */
    const char *fileName)	/* Name of file to process. Tilde-substitution
				 * will be performed on this name. */
{
    int ret;

    Tcl_Obj *const objv[],	/* Initial argument objects, which should be
				 * included in the error message. */
    const char *message)	/* Error message to print after the leading
				 * objects in objv. The message may be
				 * NULL. */
{
    Tcl_Obj *objPtr;
    int i, len, elemLen;
    char flags;
    Interp *iPtr = (Interp *) interp;
    const char *elementStr;

    /*
     * [incr Tcl] does something fairly horrific when generating error
     * messages for its ensembles; it passes the whole set of ensemble
     * arguments as a list in the first argument. This means that this code

}
declare 6 {
    void TclCleanupCommand(Command *cmdPtr)
}
declare 7 {
    int TclCopyAndCollapse(int count, const char *src, char *dst)
}
declare 8 {deprecated {}} {
    int TclCopyChannelOld(Tcl_Interp *interp, Tcl_Channel inChan,
	    Tcl_Channel outChan, int toRead, Tcl_Obj *cmdPtr)
}

# TclCreatePipeline unofficially exported for use by BLT.

declare 9 {

}
declare 11 {
    void TclDeleteCompiledLocalVars(Interp *iPtr, CallFrame *framePtr)
}
declare 12 {
    void TclDeleteVars(Interp *iPtr, TclVarHashTable *tablePtr)
}
# Removed in 8.5:
#declare 13 {
#    int TclDoGlob(Tcl_Interp *interp, char *separators,
#	    Tcl_DString *headPtr, char *tail, Tcl_GlobTypeData *types)
#}
declare 14 {
    int TclDumpMemoryInfo(ClientData clientData, int flags)
}
# Removed in 8.1:
#  declare 15 {
#      void TclExpandParseValue(ParseValue *pvPtr, int needed)
#  }
declare 16 {
    void TclExprFloatError(Tcl_Interp *interp, double value)
}
# Removed in 8.4:
#declare 17 {
#    int TclFileAttrsCmd(Tcl_Interp *interp, int objc, Tcl_Obj *const objv[])
#}
#declare 18 {
#    int TclFileCopyCmd(Tcl_Interp *interp, int argc, char **argv)
#}
#declare 19 {

declare 25 {
    void TclFreePackageInfo(Interp *iPtr)
}
# Removed in 8.1:
#  declare 26 {
#      char *TclGetCwd(Tcl_Interp *interp)
#  }
# Removed in 8.5:
#declare 27 {
#    int TclGetDate(char *p, unsigned long now, long zone,
#	    unsigned long *timePtr)
#}
declare 28 {
    Tcl_Channel TclpGetDefaultStdChannel(int type)
}

declare 31 {
    const char *TclGetExtension(const char *name)
}
declare 32 {
    int TclGetFrame(Tcl_Interp *interp, const char *str,
	    CallFrame **framePtrPtr)
}
# Removed in 8.5:
#declare 33 {
#    TclCmdProcType TclGetInterpProc(void)
#}
declare 34 {
    int TclGetIntForIndex(Tcl_Interp *interp, Tcl_Obj *objPtr,
	    int endValue, int *indexPtr)
}
# Removed in 8.4b2:
#declare 35 {
#    Tcl_Obj *TclGetIndexedScalar(Tcl_Interp *interp, int localIndex,
#	    int flags)
#}
# Removed in 8.6a2:
#declare 36 {
#    int TclGetLong(Tcl_Interp *interp, const char *str, long *longPtr)
#}
declare 37 {
    int TclGetLoadedPackages(Tcl_Interp *interp, const char *targetName)
}
declare 38 {

}
declare 41 {
    Tcl_Command TclGetOriginalCommand(Tcl_Command command)
}
declare 42 {
    CONST86 char *TclpGetUserHome(const char *name, Tcl_DString *bufferPtr)
}
# Removed in 8.5a2:
#declare 43 {
#    int TclGlobalInvoke(Tcl_Interp *interp, int argc, CONST84 char **argv,
#	    int flags)
#}
declare 44 {
    int TclGuessPackageName(const char *fileName, Tcl_DString *bufPtr)
}

declare 50 {
    void TclInitCompiledLocals(Tcl_Interp *interp, CallFrame *framePtr,
	    Namespace *nsPtr)
}
declare 51 {
    int TclInterpInit(Tcl_Interp *interp)
}
# Removed in 8.5a2:
#declare 52 {
#    int TclInvoke(Tcl_Interp *interp, int argc, CONST84 char **argv,
#	    int flags)
#}
declare 53 {
    int TclInvokeObjectCommand(ClientData clientData, Tcl_Interp *interp,
	    int argc, CONST84 char **argv)

    int TclObjInterpProc(ClientData clientData, Tcl_Interp *interp,
	    int objc, Tcl_Obj *const objv[])
}
declare 64 {
    int TclObjInvoke(Tcl_Interp *interp, int objc, Tcl_Obj *const objv[],
	    int flags)
}
# Removed in 8.5a2:
#declare 65 {
#    int TclObjInvokeGlobal(Tcl_Interp *interp, int objc,
#	    Tcl_Obj *const objv[], int flags)
#}
#declare 66 {
#    int TclOpenFileChannelDeleteProc(TclOpenFileChannelProc_ *proc)
#}

}
declare 75 {
    unsigned long TclpGetClicks(void)
}
declare 76 {
    unsigned long TclpGetSeconds(void)
}


declare 77 {deprecated {}} {
    void TclpGetTime(Tcl_Time *time)
}
# Removed in 8.6:
#declare 78 {
#    int TclpGetTimeZone(unsigned long time)
#}
# Replaced by Tcl_FSListVolumes in 8.4:

    int TclProcCompileProc(Tcl_Interp *interp, Proc *procPtr,
	    Tcl_Obj *bodyPtr, Namespace *nsPtr, const char *description,
	    const char *procName)
}
declare 93 {
    void TclProcDeleteProc(ClientData clientData)
}
# Removed in 8.5:
#declare 94 {
#    int TclProcInterpProc(ClientData clientData, Tcl_Interp *interp,
#	    int argc, const char **argv)
#}
# Replaced by Tcl_FSStat in 8.4:
#declare 95 {
#    int TclpStat(const char *path, Tcl_StatBuf *buf)

declare 102 {
    void TclSetupEnv(Tcl_Interp *interp)
}
declare 103 {
    int TclSockGetPort(Tcl_Interp *interp, const char *str, const char *proto,
	    int *portPtr)
}
declare 104 {deprecated {}} {
    int TclSockMinimumBuffersOld(int sock, int size)
}
# Replaced by Tcl_FSStat in 8.4:
#declare 105 {
#    int TclStat(const char *path, Tcl_StatBuf *buf)
#}
#declare 106 {

    void Tcl_SetNamespaceResolvers(Tcl_Namespace *namespacePtr,
	    Tcl_ResolveCmdProc *cmdProc, Tcl_ResolveVarProc *varProc,
	    Tcl_ResolveCompiledVarProc *compiledVarProc)
}
declare 132 {
    int TclpHasSockets(Tcl_Interp *interp)
}
declare 133 {deprecated {}} {
    struct tm *TclpGetDate(const time_t *time, int useGMT)
}
# Removed in 8.5
#declare 134 {
#    size_t TclpStrftime(char *s, size_t maxsize, const char *format,
#	    const struct tm *t, int useGMT)
#}

declare 156 {
    void TclRegError(Tcl_Interp *interp, const char *msg,
	    int status)
}
declare 157 {
    Var *TclVarTraceExists(Tcl_Interp *interp, const char *varName)
}

declare 158 {deprecated {use public Tcl_SetStartupScript()}} {
    void TclSetStartupScriptFileName(const char *filename)
}

declare 159 {deprecated {use public Tcl_GetStartupScript()}} {
    const char *TclGetStartupScriptFileName(void)
}
#declare 160 {
#    int TclpMatchFilesTypes(Tcl_Interp *interp, char *separators,
#	    Tcl_DString *dirPtr, char *pattern, char *tail,
#	    GlobTypeData *types)
#}

# New function due to TIP #33
declare 166 {
    int TclListObjSetElement(Tcl_Interp *interp, Tcl_Obj *listPtr,
	    int index, Tcl_Obj *valuePtr)
}



declare 167 {deprecated {use public Tcl_SetStartupScript()}} {
    void TclSetStartupScriptPath(Tcl_Obj *pathPtr)
}

declare 168 {deprecated {use public Tcl_GetStartupScript()}} {
    Tcl_Obj *TclGetStartupScriptPath(void)
}
# variant of Tcl_UtfNCmp that takes n as bytes, not chars
declare 169 {
    int TclpUtfNcmp2(const char *s1, const char *s2, unsigned long n)
}
declare 170 {

declare 176 {
    void TclCleanupVar(Var *varPtr, Var *arrayPtr)
}
declare 177 {
    void TclVarErrMsg(Tcl_Interp *interp, const char *part1, const char *part2,
	    const char *operation, const char *reason)
}

declare 178 {
    void Tcl_SetStartupScript(Tcl_Obj *pathPtr, const char *encodingName)
}
declare 179 {
    Tcl_Obj *Tcl_GetStartupScript(const char **encodingNamePtr)
}

# REMOVED
# Allocate lists without copying arrays
# declare 180 {
#    Tcl_Obj *TclNewListObjDirect(int objc, Tcl_Obj **objv)
# }
#declare 181 {
#    Tcl_Obj *TclDbNewListObjDirect(int objc, Tcl_Obj **objv,
#	    const char *file, int line)
#}



declare 182 {deprecated {}} {
     struct tm *TclpLocaltime(const time_t *clock)
}
declare 183 {deprecated {}}  {
     struct tm *TclpGmtime(const time_t *clock)
}

# For the new "Thread Storage" subsystem.

### REMOVED on grounds it should never have been exposed. All these
### functions are now either static in tclThreadStorage.c or

declare 234 {
    Var *TclVarHashCreateVar(TclVarHashTable *tablePtr, const char *key,
             int *newPtr)
}
declare 235 {
    void TclInitVarHashTable(TclVarHashTable *tablePtr, Namespace *nsPtr)
}



declare 236 {deprecated {use Tcl_BackgroundException}} {
    void TclBackgroundException(Tcl_Interp *interp, int code)
}

# TIP #285: Script cancellation support.
declare 237 {
    int TclResetCancellation(Tcl_Interp *interp, int force)
}

declare 9 win {
    int TclWinGetPlatformId(void)
}
# new for 8.4.20+/8.5.12+ Cygwin only
declare 10 win {
    Tcl_DirEntry *TclpReaddir(DIR *dir)
}
# Removed in 8.3.1 (for Win32s only):
#declare 10 win {
#    int TclWinSynchSpawn(void *args, int type, void **trans, Tcl_Pid *pidPtr)
#}

# Pipe channel functions

declare 11 win {

}
declare 19 win {
    TclFile TclpOpenFile(const char *fname, int mode)
}
declare 20 win {
    void TclWinAddProcess(HANDLE hProcess, DWORD id)
}

declare 21 win {
    char *TclpInetNtoa(struct in_addr addr)
}
# removed permanently for 8.4
#declare 21 win {
#    void TclpAsyncMark(Tcl_AsyncHandler async)
#}

MODULE_SCOPE int	TclConvertElement(const char *src, int length,
			    char *dst, int flags);
MODULE_SCOPE void	TclDeleteNamespaceVars(Namespace *nsPtr);
MODULE_SCOPE int	TclFindDictElement(Tcl_Interp *interp,
			    const char *dict, int dictLength,
			    const char **elementPtr, const char **nextPtr,
			    int *sizePtr, int *literalPtr);
/* TIP #280 - Modified token based evaluation, with line information. */
MODULE_SCOPE int	TclEvalEx(Tcl_Interp *interp, const char *script,
			    int numBytes, int flags, int line,
			    int *clNextOuter, const char *outerScript);
MODULE_SCOPE Tcl_ObjCmdProc TclFileAttrsCmd;
MODULE_SCOPE Tcl_ObjCmdProc TclFileCopyCmd;
MODULE_SCOPE Tcl_ObjCmdProc TclFileDeleteCmd;
MODULE_SCOPE Tcl_ObjCmdProc TclFileLinkCmd;

MODULE_SCOPE void	TclRememberJoinableThread(Tcl_ThreadId id);
MODULE_SCOPE void	TclRememberMutex(Tcl_Mutex *mutex);
MODULE_SCOPE void	TclRemoveScriptLimitCallbacks(Tcl_Interp *interp);
MODULE_SCOPE int	TclReToGlob(Tcl_Interp *interp, const char *reStr,
			    int reStrLen, Tcl_DString *dsPtr, int *flagsPtr,
			    int *quantifiersFoundPtr);
MODULE_SCOPE int	TclScanElement(const char *string, int length,
			    char *flagPtr);
MODULE_SCOPE void	TclSetBgErrorHandler(Tcl_Interp *interp,
			    Tcl_Obj *cmdPrefix);
MODULE_SCOPE void	TclSetBignumIntRep(Tcl_Obj *objPtr,
			    mp_int *bignumValue);
MODULE_SCOPE int	TclSetBooleanFromAny(Tcl_Interp *interp, Tcl_Obj *objPtr);
MODULE_SCOPE void	TclSetCmdNameObj(Tcl_Interp *interp, Tcl_Obj *objPtr,
			    Command *cmdPtr);

MODULE_SCOPE void	TclFinalizeThreadDataThread(void);
MODULE_SCOPE void	TclFinalizeThreadStorage(void);
#ifdef TCL_WIDE_CLICKS
MODULE_SCOPE Tcl_WideInt TclpGetWideClicks(void);
MODULE_SCOPE double	TclpWideClicksToNanoseconds(Tcl_WideInt clicks);
#endif
MODULE_SCOPE int	TclZlibInit(Tcl_Interp *interp);
MODULE_SCOPE int	TclZipfsInit(Tcl_Interp *interp);
MODULE_SCOPE int        TclZipfsMount(Tcl_Interp *interp, const char *zipname,
			 const char *mntpt, const char *passwd);
MODULE_SCOPE int 	TclZipfsUnmount(Tcl_Interp *interp, const char *zipname);
MODULE_SCOPE void *	TclpThreadCreateKey(void);
MODULE_SCOPE void	TclpThreadDeleteKey(void *keyPtr);
MODULE_SCOPE void	TclpThreadSetMasterTSD(void *tsdKeyPtr, void *ptr);
MODULE_SCOPE void *	TclpThreadGetMasterTSD(void *tsdKeyPtr);

MODULE_SCOPE void	TclErrorStackResetIf(Tcl_Interp *interp, const char *msg, int length);
/* Tip 430 */
MODULE_SCOPE int    TclZipfs_Init(Tcl_Interp *interp);
MODULE_SCOPE int    TclZipfs_SafeInit(Tcl_Interp *interp);


/*
 *----------------------------------------------------------------
 * Command procedures in the generic core:
 *----------------------------------------------------------------
 */

#   define TclUniCharNcmp(cs,ct,n) memcmp((cs),(ct),(n)*sizeof(Tcl_UniChar))
#else /* !WORDS_BIGENDIAN */
#   define TclUniCharNcmp Tcl_UniCharNcmp
#endif /* WORDS_BIGENDIAN */

/*
 *----------------------------------------------------------------
 * Macro used by the Tcl core to increment a namespace's export epoch
 * counter. The ANSI C "prototype" for this macro is:
 *
 * MODULE_SCOPE void	TclInvalidateNsCmdLookup(Namespace *nsPtr);
 *----------------------------------------------------------------
 */

#define TclInvalidateNsCmdLookup(nsPtr) \

				Tcl_Pid *pidPtr, Tcl_Channel errorChan);
/* 6 */
EXTERN void		TclCleanupCommand(Command *cmdPtr);
/* 7 */
EXTERN int		TclCopyAndCollapse(int count, const char *src,
				char *dst);
/* 8 */
TCL_DEPRECATED("")
int			TclCopyChannelOld(Tcl_Interp *interp,
				Tcl_Channel inChan, Tcl_Channel outChan,
				int toRead, Tcl_Obj *cmdPtr);
/* 9 */
EXTERN int		TclCreatePipeline(Tcl_Interp *interp, int argc,
				const char **argv, Tcl_Pid **pidArrayPtr,
				TclFile *inPipePtr, TclFile *outPipePtr,
				TclFile *errFilePtr);

/* 74 */
EXTERN void		TclpFree(char *ptr);
/* 75 */
EXTERN unsigned long	TclpGetClicks(void);
/* 76 */
EXTERN unsigned long	TclpGetSeconds(void);
/* 77 */
TCL_DEPRECATED("")
void			TclpGetTime(Tcl_Time *time);
/* Slot 78 is reserved */
/* Slot 79 is reserved */
/* Slot 80 is reserved */
/* 81 */
EXTERN char *		TclpRealloc(char *ptr, unsigned int size);
/* Slot 82 is reserved */
/* Slot 83 is reserved */

EXTERN CONST86 char *	TclSetPreInitScript(const char *string);
/* 102 */
EXTERN void		TclSetupEnv(Tcl_Interp *interp);
/* 103 */
EXTERN int		TclSockGetPort(Tcl_Interp *interp, const char *str,
				const char *proto, int *portPtr);
/* 104 */
TCL_DEPRECATED("")
int			TclSockMinimumBuffersOld(int sock, int size);
/* Slot 105 is reserved */
/* Slot 106 is reserved */
/* Slot 107 is reserved */
/* 108 */
EXTERN void		TclTeardownNamespace(Namespace *nsPtr);
/* 109 */
EXTERN int		TclUpdateReturnInfo(Interp *iPtr);

				Tcl_Namespace *namespacePtr,
				Tcl_ResolveCmdProc *cmdProc,
				Tcl_ResolveVarProc *varProc,
				Tcl_ResolveCompiledVarProc *compiledVarProc);
/* 132 */
EXTERN int		TclpHasSockets(Tcl_Interp *interp);
/* 133 */
TCL_DEPRECATED("")
struct tm *		TclpGetDate(const time_t *time, int useGMT);
/* Slot 134 is reserved */
/* Slot 135 is reserved */
/* Slot 136 is reserved */
/* Slot 137 is reserved */
/* 138 */
EXTERN CONST84_RETURN char * TclGetEnv(const char *name,
				Tcl_DString *valuePtr);

/* 156 */
EXTERN void		TclRegError(Tcl_Interp *interp, const char *msg,
				int status);
/* 157 */
EXTERN Var *		TclVarTraceExists(Tcl_Interp *interp,
				const char *varName);
/* 158 */
TCL_DEPRECATED("use public Tcl_SetStartupScript()")
void			TclSetStartupScriptFileName(const char *filename);
/* 159 */
TCL_DEPRECATED("use public Tcl_GetStartupScript()")
const char *		TclGetStartupScriptFileName(void);
/* Slot 160 is reserved */
/* 161 */
EXTERN int		TclChannelTransform(Tcl_Interp *interp,
				Tcl_Channel chan, Tcl_Obj *cmdObjPtr);
/* 162 */
EXTERN void		TclChannelEventScriptInvoker(ClientData clientData,
				int flags);
/* 163 */
EXTERN const void *	TclGetInstructionTable(void);
/* 164 */
EXTERN void		TclExpandCodeArray(void *envPtr);
/* 165 */
EXTERN void		TclpSetInitialEncodings(void);
/* 166 */
EXTERN int		TclListObjSetElement(Tcl_Interp *interp,
				Tcl_Obj *listPtr, int index,
				Tcl_Obj *valuePtr);
/* 167 */
TCL_DEPRECATED("use public Tcl_SetStartupScript()")
void			TclSetStartupScriptPath(Tcl_Obj *pathPtr);
/* 168 */
TCL_DEPRECATED("use public Tcl_GetStartupScript()")
Tcl_Obj *		TclGetStartupScriptPath(void);
/* 169 */
EXTERN int		TclpUtfNcmp2(const char *s1, const char *s2,
				unsigned long n);
/* 170 */
EXTERN int		TclCheckInterpTraces(Tcl_Interp *interp,
				const char *command, int numChars,
				Command *cmdPtr, int result, int traceFlags,

EXTERN void		Tcl_SetStartupScript(Tcl_Obj *pathPtr,
				const char *encodingName);
/* 179 */
EXTERN Tcl_Obj *	Tcl_GetStartupScript(const char **encodingNamePtr);
/* Slot 180 is reserved */
/* Slot 181 is reserved */
/* 182 */
TCL_DEPRECATED("")
struct tm *		TclpLocaltime(const time_t *clock);
/* 183 */
TCL_DEPRECATED("")
struct tm *		TclpGmtime(const time_t *clock);
/* Slot 184 is reserved */
/* Slot 185 is reserved */
/* Slot 186 is reserved */
/* Slot 187 is reserved */
/* Slot 188 is reserved */
/* Slot 189 is reserved */
/* Slot 190 is reserved */

/* 234 */
EXTERN Var *		TclVarHashCreateVar(TclVarHashTable *tablePtr,
				const char *key, int *newPtr);
/* 235 */
EXTERN void		TclInitVarHashTable(TclVarHashTable *tablePtr,
				Namespace *nsPtr);
/* 236 */
TCL_DEPRECATED("use Tcl_BackgroundException")
void			TclBackgroundException(Tcl_Interp *interp, int code);
/* 237 */
EXTERN int		TclResetCancellation(Tcl_Interp *interp, int force);
/* 238 */
EXTERN int		TclNRInterpProc(ClientData clientData,
				Tcl_Interp *interp, int objc,
				Tcl_Obj *const objv[]);
/* 239 */

    void (*reserved1)(void);
    void (*reserved2)(void);
    void (*tclAllocateFreeObjects) (void); /* 3 */
    void (*reserved4)(void);
    int (*tclCleanupChildren) (Tcl_Interp *interp, int numPids, Tcl_Pid *pidPtr, Tcl_Channel errorChan); /* 5 */
    void (*tclCleanupCommand) (Command *cmdPtr); /* 6 */
    int (*tclCopyAndCollapse) (int count, const char *src, char *dst); /* 7 */
    TCL_DEPRECATED_API("") int (*tclCopyChannelOld) (Tcl_Interp *interp, Tcl_Channel inChan, Tcl_Channel outChan, int toRead, Tcl_Obj *cmdPtr); /* 8 */
    int (*tclCreatePipeline) (Tcl_Interp *interp, int argc, const char **argv, Tcl_Pid **pidArrayPtr, TclFile *inPipePtr, TclFile *outPipePtr, TclFile *errFilePtr); /* 9 */
    int (*tclCreateProc) (Tcl_Interp *interp, Namespace *nsPtr, const char *procName, Tcl_Obj *argsPtr, Tcl_Obj *bodyPtr, Proc **procPtrPtr); /* 10 */
    void (*tclDeleteCompiledLocalVars) (Interp *iPtr, CallFrame *framePtr); /* 11 */
    void (*tclDeleteVars) (Interp *iPtr, TclVarHashTable *tablePtr); /* 12 */
    void (*reserved13)(void);
    int (*tclDumpMemoryInfo) (ClientData clientData, int flags); /* 14 */
    void (*reserved15)(void);

    void (*reserved70)(void);
    void (*reserved71)(void);
    void (*reserved72)(void);
    void (*reserved73)(void);
    void (*tclpFree) (char *ptr); /* 74 */
    unsigned long (*tclpGetClicks) (void); /* 75 */
    unsigned long (*tclpGetSeconds) (void); /* 76 */
    TCL_DEPRECATED_API("") void (*tclpGetTime) (Tcl_Time *time); /* 77 */
    void (*reserved78)(void);
    void (*reserved79)(void);
    void (*reserved80)(void);
    char * (*tclpRealloc) (char *ptr, unsigned int size); /* 81 */
    void (*reserved82)(void);
    void (*reserved83)(void);
    void (*reserved84)(void);

    void (*tclResetShadowedCmdRefs) (Tcl_Interp *interp, Command *newCmdPtr); /* 97 */
    int (*tclServiceIdle) (void); /* 98 */
    void (*reserved99)(void);
    void (*reserved100)(void);
    CONST86 char * (*tclSetPreInitScript) (const char *string); /* 101 */
    void (*tclSetupEnv) (Tcl_Interp *interp); /* 102 */
    int (*tclSockGetPort) (Tcl_Interp *interp, const char *str, const char *proto, int *portPtr); /* 103 */
    TCL_DEPRECATED_API("") int (*tclSockMinimumBuffersOld) (int sock, int size); /* 104 */
    void (*reserved105)(void);
    void (*reserved106)(void);
    void (*reserved107)(void);
    void (*tclTeardownNamespace) (Namespace *nsPtr); /* 108 */
    int (*tclUpdateReturnInfo) (Interp *iPtr); /* 109 */
    int (*tclSockMinimumBuffers) (void *sock, int size); /* 110 */
    void (*tcl_AddInterpResolvers) (Tcl_Interp *interp, const char *name, Tcl_ResolveCmdProc *cmdProc, Tcl_ResolveVarProc *varProc, Tcl_ResolveCompiledVarProc *compiledVarProc); /* 111 */

    void (*tcl_GetVariableFullName) (Tcl_Interp *interp, Tcl_Var variable, Tcl_Obj *objPtr); /* 126 */
    int (*tcl_Import) (Tcl_Interp *interp, Tcl_Namespace *nsPtr, const char *pattern, int allowOverwrite); /* 127 */
    void (*tcl_PopCallFrame) (Tcl_Interp *interp); /* 128 */
    int (*tcl_PushCallFrame) (Tcl_Interp *interp, Tcl_CallFrame *framePtr, Tcl_Namespace *nsPtr, int isProcCallFrame); /* 129 */
    int (*tcl_RemoveInterpResolvers) (Tcl_Interp *interp, const char *name); /* 130 */
    void (*tcl_SetNamespaceResolvers) (Tcl_Namespace *namespacePtr, Tcl_ResolveCmdProc *cmdProc, Tcl_ResolveVarProc *varProc, Tcl_ResolveCompiledVarProc *compiledVarProc); /* 131 */
    int (*tclpHasSockets) (Tcl_Interp *interp); /* 132 */
    TCL_DEPRECATED_API("") struct tm * (*tclpGetDate) (const time_t *time, int useGMT); /* 133 */
    void (*reserved134)(void);
    void (*reserved135)(void);
    void (*reserved136)(void);
    void (*reserved137)(void);
    CONST84_RETURN char * (*tclGetEnv) (const char *name, Tcl_DString *valuePtr); /* 138 */
    void (*reserved139)(void);
    void (*reserved140)(void);

    void (*tclRegExpRangeUniChar) (Tcl_RegExp re, int index, int *startPtr, int *endPtr); /* 151 */
    void (*tclSetLibraryPath) (Tcl_Obj *pathPtr); /* 152 */
    Tcl_Obj * (*tclGetLibraryPath) (void); /* 153 */
    void (*reserved154)(void);
    void (*reserved155)(void);
    void (*tclRegError) (Tcl_Interp *interp, const char *msg, int status); /* 156 */
    Var * (*tclVarTraceExists) (Tcl_Interp *interp, const char *varName); /* 157 */
    TCL_DEPRECATED_API("use public Tcl_SetStartupScript()") void (*tclSetStartupScriptFileName) (const char *filename); /* 158 */
    TCL_DEPRECATED_API("use public Tcl_GetStartupScript()") const char * (*tclGetStartupScriptFileName) (void); /* 159 */
    void (*reserved160)(void);
    int (*tclChannelTransform) (Tcl_Interp *interp, Tcl_Channel chan, Tcl_Obj *cmdObjPtr); /* 161 */
    void (*tclChannelEventScriptInvoker) (ClientData clientData, int flags); /* 162 */
    const void * (*tclGetInstructionTable) (void); /* 163 */
    void (*tclExpandCodeArray) (void *envPtr); /* 164 */
    void (*tclpSetInitialEncodings) (void); /* 165 */
    int (*tclListObjSetElement) (Tcl_Interp *interp, Tcl_Obj *listPtr, int index, Tcl_Obj *valuePtr); /* 166 */
    TCL_DEPRECATED_API("use public Tcl_SetStartupScript()") void (*tclSetStartupScriptPath) (Tcl_Obj *pathPtr); /* 167 */
    TCL_DEPRECATED_API("use public Tcl_GetStartupScript()") Tcl_Obj * (*tclGetStartupScriptPath) (void); /* 168 */
    int (*tclpUtfNcmp2) (const char *s1, const char *s2, unsigned long n); /* 169 */
    int (*tclCheckInterpTraces) (Tcl_Interp *interp, const char *command, int numChars, Command *cmdPtr, int result, int traceFlags, int objc, Tcl_Obj *const objv[]); /* 170 */
    int (*tclCheckExecutionTraces) (Tcl_Interp *interp, const char *command, int numChars, Command *cmdPtr, int result, int traceFlags, int objc, Tcl_Obj *const objv[]); /* 171 */
    int (*tclInThreadExit) (void); /* 172 */
    int (*tclUniCharMatch) (const Tcl_UniChar *string, int strLen, const Tcl_UniChar *pattern, int ptnLen, int flags); /* 173 */
    void (*reserved174)(void);
    int (*tclCallVarTraces) (Interp *iPtr, Var *arrayPtr, Var *varPtr, const char *part1, const char *part2, int flags, int leaveErrMsg); /* 175 */
    void (*tclCleanupVar) (Var *varPtr, Var *arrayPtr); /* 176 */
    void (*tclVarErrMsg) (Tcl_Interp *interp, const char *part1, const char *part2, const char *operation, const char *reason); /* 177 */
    void (*tcl_SetStartupScript) (Tcl_Obj *pathPtr, const char *encodingName); /* 178 */
    Tcl_Obj * (*tcl_GetStartupScript) (const char **encodingNamePtr); /* 179 */
    void (*reserved180)(void);
    void (*reserved181)(void);
    TCL_DEPRECATED_API("") struct tm * (*tclpLocaltime) (const time_t *clock); /* 182 */
    TCL_DEPRECATED_API("") struct tm * (*tclpGmtime) (const time_t *clock); /* 183 */
    void (*reserved184)(void);
    void (*reserved185)(void);
    void (*reserved186)(void);
    void (*reserved187)(void);
    void (*reserved188)(void);
    void (*reserved189)(void);
    void (*reserved190)(void);

    int (*tclPtrMakeUpvar) (Tcl_Interp *interp, Var *otherP1Ptr, const char *myName, int myFlags, int index); /* 229 */
    Var * (*tclObjLookupVar) (Tcl_Interp *interp, Tcl_Obj *part1Ptr, const char *part2, int flags, const char *msg, const int createPart1, const int createPart2, Var **arrayPtrPtr); /* 230 */
    int (*tclGetNamespaceFromObj) (Tcl_Interp *interp, Tcl_Obj *objPtr, Tcl_Namespace **nsPtrPtr); /* 231 */
    int (*tclEvalObjEx) (Tcl_Interp *interp, Tcl_Obj *objPtr, int flags, const CmdFrame *invoker, int word); /* 232 */
    void (*tclGetSrcInfoForPc) (CmdFrame *contextPtr); /* 233 */
    Var * (*tclVarHashCreateVar) (TclVarHashTable *tablePtr, const char *key, int *newPtr); /* 234 */
    void (*tclInitVarHashTable) (TclVarHashTable *tablePtr, Namespace *nsPtr); /* 235 */
    TCL_DEPRECATED_API("use Tcl_BackgroundException") void (*tclBackgroundException) (Tcl_Interp *interp, int code); /* 236 */
    int (*tclResetCancellation) (Tcl_Interp *interp, int force); /* 237 */
    int (*tclNRInterpProc) (ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]); /* 238 */
    int (*tclNRInterpProcCore) (Tcl_Interp *interp, Tcl_Obj *procNameObj, int skip, ProcErrorProc *errorProc); /* 239 */
    int (*tclNRRunCallbacks) (Tcl_Interp *interp, int result, struct NRE_callback *rootPtr); /* 240 */
    int (*tclNREvalObjEx) (Tcl_Interp *interp, Tcl_Obj *objPtr, int flags, const CmdFrame *invoker, int word); /* 241 */
    int (*tclNREvalObjv) (Tcl_Interp *interp, int objc, Tcl_Obj *const objv[], int flags, Command *cmdPtr); /* 242 */
    void (*tclDbDumpActiveObjects) (FILE *outFile); /* 243 */

#undef TclGetStartupScriptFileName
#undef TclSetStartupScriptFileName
#undef TclGetStartupScriptPath
#undef TclSetStartupScriptPath
#undef TclBackgroundException

#if defined(USE_TCL_STUBS)
#   undef Tcl_SetStartupScript
#   define Tcl_SetStartupScript \
	    (tclStubsPtr->tcl_SetStartupScript) /* 622 */
#   undef Tcl_GetStartupScript
#   define Tcl_GetStartupScript \
	    (tclStubsPtr->tcl_GetStartupScript) /* 623 */
#   undef Tcl_CreateNamespace

 *----------------------------------------------------------------------
 */

static void
UpdateStringOfList(
    Tcl_Obj *listPtr)		/* List object with string rep to update. */
{
#   define LOCAL_SIZE 64
    char localFlags[LOCAL_SIZE], *flagPtr = NULL;
    List *listRepPtr = ListRepPtr(listPtr);
    int numElems = listRepPtr->elemCount;
    int i, length, bytesNeeded = 0;
    const char *elem;
    char *dst;
    Tcl_Obj **elemPtrs;

    if (numElems <= LOCAL_SIZE) {
	flagPtr = localFlags;
    } else {
	/*
	 * We know numElems <= LIST_MAX, so this is safe.
	 */

	flagPtr = ckalloc(numElems);
    }
    elemPtrs = &listRepPtr->elements;
    for (i = 0; i < numElems; i++) {
	flagPtr[i] = (i ? TCL_DONT_QUOTE_HASH : 0);
	elem = TclGetStringFromObj(elemPtrs[i], &length);
	bytesNeeded += TclScanElement(elem, length, flagPtr+i);
	if (bytesNeeded < 0) {

	} else {
	    /*
	     * Test for the existence of the rc file before trying to read it.
	     */

	    c = Tcl_OpenFileChannel(NULL, fullName, "r", 0);
	    if (c != NULL) {


		Tcl_Close(NULL, c);

		if (Tcl_EvalFile(interp, fullName) != TCL_OK) {
		    chan = Tcl_GetStdChannel(TCL_STDERR);
		    if (chan) {
			Tcl_WriteObj(chan, Tcl_GetObjResult(interp));
			Tcl_WriteChars(chan, "\n", 1);
		    }
		}

	    }
	}
	Tcl_DStringFree(&temp);
    }
}
#endif /* !TCL_ASCII_MAIN */



/*
 * ----------------------------------------------------------------------
 *
 * AllocObject --
 *
 *	Allocate an object of basic type. Does not splice the object into its
 *	class's instance list.  The caller must set the classPtr on the object,
 *	either to a class or to NULL.
 *
 * ----------------------------------------------------------------------
 */

static Object *
AllocObject(
    Tcl_Interp *interp,		/* Interpreter within which to create the

	 * to. Once that's done, we need to repatch the object to have the
	 * right class since AllocClass interferes with that.
	 */

	AllocClass(interp, oPtr);
	oPtr->selfCls = classPtr;
	TclOOAddToSubclasses(oPtr->classPtr, fPtr->objectCls);
    } else {
	oPtr->classPtr = NULL;
    }

    /*
     * Run constructors, except when objc < 0 (a special flag case used for
     * object cloning only).
     */

    Tcl_Obj *const reqv[],	/* 0 means to use the latest version
				 * available. */
    void *clientDataPtr)
{
    Interp *iPtr = (Interp *) interp;
    Package *pkgPtr;
    PkgAvail *availPtr, *bestPtr, *bestStablePtr;
    char *availVersion, *bestVersion, *bestStableVersion;
				/* Internal rep. of versions */
    int availStable, code, satisfies, pass;
    char *script, *pkgVersionI;
    Tcl_DString command;

    if (TCL_OK != CheckAllRequirements(interp, reqc, reqv)) {
	return NULL;

	 * are actually locating the best, and the best stable version. One of
	 * them is then chosen based on the selection mode.
	 */

	bestPtr = NULL;
	bestStablePtr = NULL;
	bestVersion = NULL;
	bestStableVersion = NULL;

	for (availPtr = pkgPtr->availPtr; availPtr != NULL;
		availPtr = availPtr->nextPtr) {
	    if (CheckVersionAndConvert(interp, availPtr->version,
		    &availVersion, &availStable) != TCL_OK) {
		/*
		 * The provided version number has invalid syntax. This
		 * should not happen. This should have been caught by the
		 * 'package ifneeded' registering the package.
		 */

		continue;
	    }



	    /* Check satisfaction of requirements before considering the current version further. */




















	    if (reqc > 0) {


		satisfies = SomeRequirementSatisfied(availVersion, reqc, reqv);
		if (!satisfies) {
		    ckfree(availVersion);
		    availVersion = NULL;
		    continue;
		}
	    }

	    if (bestPtr != NULL) {
		int res = CompareVersions(availVersion, bestVersion, NULL);

		/*
		 * Note: Used internal reps in the comparison!
		 */

		if (res > 0) {
		    /*
		     * The version of the package sought is better than the
		     * currently selected version.
		     */
		    goto newbest;
		}
	    } else {
	    newbest:
		/* We have found a version which is better than our max. */

		bestPtr = availPtr;
		CheckVersionAndConvert(interp, bestPtr->version, &bestVersion, NULL);
	    }

	    if (!availStable) {
		ckfree(availVersion);
		availVersion = NULL;
		continue;
	    }

	    if (bestStablePtr != NULL) {
		int res = CompareVersions(availVersion, bestStableVersion, NULL);

		/*
		 * Note: Used internal reps in the comparison!
		 */

		if (res > 0) {
		    /*
		     * This stable version of the package sought is better
		     * than the currently selected stable version.
		     */
		    goto newstable;
		}
	    } else {
	    newstable:
		/* We have found a stable version which is better than our max stable. */
		bestStablePtr = availPtr;
		CheckVersionAndConvert(interp, bestStablePtr->version, &bestStableVersion, NULL);
	    }

	    ckfree(availVersion);
	    availVersion = NULL;
	} /* end for */

	/*
	 * Clean up memorized internal reps, if any.
	 */

	if (bestVersion != NULL) {
	    ckfree(bestVersion);
	    bestVersion = NULL;
	}

	if (bestStableVersion != NULL) {
	    ckfree(bestStableVersion);
	    bestStableVersion = NULL;
	}

	/*
	 * Now choose a version among the two best. For 'latest' we simply
	 * take (actually keep) the best. For 'stable' we take the best
	 * stable, if there is any, or the best if there is nothing stable.
	 */

    /* Runtime paths to various stuff */

    {"libdir,runtime",		CFG_RUNTIME_LIBDIR},
    {"bindir,runtime",		CFG_RUNTIME_BINDIR},
    {"scriptdir,runtime",	CFG_RUNTIME_SCRDIR},
    {"includedir,runtime",	CFG_RUNTIME_INCDIR},
    {"docdir,runtime",		CFG_RUNTIME_DOCDIR},
    {"dllfile,runtime",		CFG_RUNTIME_DLLFILE},
    {"zipfile,runtime",		CFG_RUNTIME_ZIPFILE},

    /* Installation paths to various stuff */

    {"libdir,install",		CFG_INSTALL_LIBDIR},
    {"bindir,install",		CFG_INSTALL_BINDIR},
    {"scriptdir,install",	CFG_INSTALL_SCRDIR},
    {"includedir,install",	CFG_INSTALL_INCDIR},

    Namespace *nsPtr,		/* Namespace containing this proc. */
    const char *procName,	/* Unqualified name of this proc. */
    Tcl_Obj *argsPtr,		/* Description of arguments. */
    Tcl_Obj *bodyPtr,		/* Command body. */
    Proc **procPtrPtr)		/* Returns: pointer to proc data. */
{
    Interp *iPtr = (Interp *) interp;


    register Proc *procPtr;
    int i, result, numArgs, plen;
    const char *bytes, *argname, *argnamei;
    char argnamelast;
    register CompiledLocal *localPtr = NULL;
    Tcl_Obj *defPtr, *errorObj, **argArray;
    int precompiled = 0;

    if (bodyPtr->typePtr == &tclProcBodyType) {
	/*
	 * Because the body is a TclProProcBody, the actual body is already
	 * compiled, and it is not shared with anyone else, so it's OK not to
	 * unshare it (as a matter of fact, it is bad to unshare it, because

	 * means that the same code can not be shared by two procedures that
	 * have a different number of arguments, even if their bodies are
	 * identical. Note that we don't use Tcl_DuplicateObj since we would
	 * not want any bytecode internal representation.
	 */

	if (Tcl_IsShared(bodyPtr)) {
	    int length;
	    Tcl_Obj *sharedBodyPtr = bodyPtr;

	    bytes = TclGetStringFromObj(bodyPtr, &length);
	    bodyPtr = Tcl_NewStringObj(bytes, length);

	    /*
	     * TIP #280.

    }

    /*
     * Break up the argument list into argument specifiers, then process each
     * argument specifier. If the body is precompiled, processing is limited
     * to checking that the parsed argument is consistent with the one stored
     * in the Proc.


     */


    result = Tcl_ListObjGetElements(interp , argsPtr ,&numArgs ,&argArray);
    if (result != TCL_OK) {
	goto procError;
    }

    if (precompiled) {
	if (numArgs > procPtr->numArgs) {
	    Tcl_SetObjResult(interp, Tcl_ObjPrintf(

	procPtr->numArgs = numArgs;
	procPtr->numCompiledLocals = numArgs;
    }

    for (i = 0; i < numArgs; i++) {
	int fieldCount, nameLength;
	size_t valueLength;
	Tcl_Obj **fieldValues;

	/*
	 * Now divide the specifier up into name and default.
	 */

	result = Tcl_ListObjGetElements(interp, argArray[i], &fieldCount,
		&fieldValues);
	if (result != TCL_OK) {
	    goto procError;
	}
	if (fieldCount > 2) {

	    errorObj = Tcl_NewStringObj(
		"too many fields in argument specifier \"", -1);
	    Tcl_AppendObjToObj(errorObj, argArray[i]);
	    Tcl_AppendToObj(errorObj, "\"", -1);
	    Tcl_SetObjResult(interp, errorObj);
	    Tcl_SetErrorCode(interp, "TCL", "OPERATION", "PROC",
		    "FORMALARGUMENTFORMAT", NULL);
	    goto procError;
	}
	if ((fieldCount == 0) || (fieldValues[0]->length == 0)) {

	    Tcl_SetObjResult(interp, Tcl_NewStringObj(
		    "argument with no name", -1));
	    Tcl_SetErrorCode(interp, "TCL", "OPERATION", "PROC",
		    "FORMALARGUMENTFORMAT", NULL);
	    goto procError;
	}

	nameLength = Tcl_NumUtfChars(Tcl_GetString(fieldValues[0]), fieldValues[0]->length);
	if (fieldCount == 2) {
	    valueLength = Tcl_NumUtfChars(Tcl_GetString(fieldValues[1]),
		fieldValues[1]->length);
	} else {
	    valueLength = 0;
	}

	/*
	 * Check that the formal parameter name is a scalar.
	 */

	argname = Tcl_GetStringFromObj(fieldValues[0], &plen);
	argnamei = argname;
	argnamelast = argname[plen-1];
	while (plen--) {
	    if (argnamei[0] == '(') {





		if (argnamelast == ')') {	/* We have an array element. */
		    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
			    "formal parameter \"%s\" is an array element",
			    Tcl_GetString(fieldValues[0])));

		    Tcl_SetErrorCode(interp, "TCL", "OPERATION", "PROC",
			    "FORMALARGUMENTFORMAT", NULL);
		    goto procError;
		}
	    } else if ((argnamei[0] == ':') && (argnamei[1] == ':')) {

		errorObj = Tcl_NewStringObj("formal parameter \"", -1);
		Tcl_AppendObjToObj(errorObj, fieldValues[0]);
		Tcl_AppendToObj(errorObj, "\" is not a simple name", -1);
		Tcl_SetObjResult(interp, errorObj);
		Tcl_SetErrorCode(interp, "TCL", "OPERATION", "PROC",
			"FORMALARGUMENTFORMAT", NULL);
		goto procError;
	    }

	    argnamei = Tcl_UtfNext(argnamei);
	}

	if (precompiled) {
	    /*
	     * Compare the parsed argument with the stored one. Note that the
	     * only flag value that makes sense at this point is VAR_ARGUMENT
	     * (its value was kept the same as pre VarReform to simplify
	     * tbcload's processing of older byetcodes).
	     *
	     * The only other flag vlaue that is important to retrieve from
	     * precompiled procs is VAR_TEMPORARY (also unchanged). It is
	     * needed later when retrieving the variable names.
	     */

	    if ((localPtr->nameLength != nameLength)
		    || (Tcl_UtfNcmp(localPtr->name, argname, nameLength))
		    || (localPtr->frameIndex != i)
		    || !(localPtr->flags & VAR_ARGUMENT)
		    || (localPtr->defValuePtr == NULL && fieldCount == 2)
		    || (localPtr->defValuePtr != NULL && fieldCount != 2)) {
		Tcl_SetObjResult(interp, Tcl_ObjPrintf(
			"procedure \"%s\": formal parameter %d is "
			"inconsistent with precompiled body", procName, i));

		Tcl_SetErrorCode(interp, "TCL", "OPERATION", "PROC",
			"BYTECODELIES", NULL);
		goto procError;
	    }

	    /*
	     * Compare the default value if any.
	     */

	    if (localPtr->defValuePtr != NULL) {
		const char *tmpPtr = TclGetString(localPtr->defValuePtr);
		size_t tmpLength = localPtr->defValuePtr->length;

		if ((valueLength != tmpLength) ||
			Tcl_UtfNcmp(Tcl_GetString(fieldValues[1]), tmpPtr, tmpLength)) {
		    errorObj = Tcl_ObjPrintf(
			    "procedure \"%s\": formal parameter \"" ,procName);
		    Tcl_AppendObjToObj(errorObj, fieldValues[0]);
		    Tcl_AppendToObj(errorObj, "\" has "
			"default value inconsistent with precompiled body", -1);


		    Tcl_SetObjResult(interp, errorObj);
		    Tcl_SetErrorCode(interp, "TCL", "OPERATION", "PROC",
			    "BYTECODELIES", NULL);
		    goto procError;
		}
	    }
	    if ((i == numArgs - 1)
		    && (localPtr->nameLength == 4)
		    && (localPtr->name[0] == 'a')
		    && (strcmp(localPtr->name, "args") == 0)) {
		localPtr->flags |= VAR_IS_ARGS;
	    }

	    localPtr = localPtr->nextPtr;
	} else {
	    /*
	     * Allocate an entry in the runtime procedure frame's array of
	     * local variables for the argument.
	     */

	    localPtr = ckalloc(TclOffset(CompiledLocal, name) + fieldValues[0]->length +1);
	    if (procPtr->firstLocalPtr == NULL) {
		procPtr->firstLocalPtr = procPtr->lastLocalPtr = localPtr;
	    } else {
		procPtr->lastLocalPtr->nextPtr = localPtr;
		procPtr->lastLocalPtr = localPtr;
	    }
	    localPtr->nextPtr = NULL;
	    localPtr->nameLength = Tcl_NumUtfChars(argname, fieldValues[0]->length);
	    localPtr->frameIndex = i;
	    localPtr->flags = VAR_ARGUMENT;
	    localPtr->resolveInfo = NULL;

	    if (fieldCount == 2) {
		localPtr->defValuePtr = fieldValues[1];

		Tcl_IncrRefCount(localPtr->defValuePtr);
	    } else {
		localPtr->defValuePtr = NULL;
	    }
	    memcpy(localPtr->name, argname, fieldValues[0]->length + 1);
	    if ((i == numArgs - 1)
		    && (localPtr->nameLength == 4)
		    && (localPtr->name[0] == 'a')
		    && (strcmp(localPtr->name, "args") == 0)) {
		localPtr->flags |= VAR_IS_ARGS;
	    }
	}


    }

    *procPtrPtr = procPtr;

    return TCL_OK;

  procError:
    if (precompiled) {
	procPtr->refCount--;
    } else {
	Tcl_DecrRefCount(bodyPtr);
	while (procPtr->firstLocalPtr != NULL) {
	    localPtr = procPtr->firstLocalPtr;
	    procPtr->firstLocalPtr = localPtr->nextPtr;

	    defPtr = localPtr->defValuePtr;
	    if (defPtr != NULL) {
		Tcl_DecrRefCount(defPtr);
	    }

	    ckfree(localPtr);
	}
	ckfree(procPtr);
    }



    return TCL_ERROR;
}

/*
 *----------------------------------------------------------------------
 *
 * TclGetFrame --

	    break;
	}
	case 'c':
	    /*
	     * Scan a single Unicode character.
	     */

	    offset = TclUtfToUniChar(string, &sch);
	    i = (int)sch;
#if TCL_UTF_MAX == 4
	    if (!offset) {
		offset = Tcl_UtfToUniChar(string, &sch);
		i = (((i<<10) & 0x0FFC00) + 0x10000) + (sch & 0x3FF);
	    }
#endif
	    string += offset;
	    if (!(flags & SCAN_SUPPRESS)) {
		objPtr = Tcl_NewIntObj(i);
		Tcl_IncrRefCount(objPtr);
		CLANG_ASSERT(objs);
		objs[objIndex++] = objPtr;
	    }
	    break;

	case 'i':

		return (try - bh);
	    }
	    try++;
	}
	return -1;
    }

    /*
     * Check if we have two strings of single-byte characters. If we have, we
     * can use strstr() to do the search. Note that we can sometimes have
     * multibyte characters when the string could be minimally represented
     * using single byte characters; we can't assume that a mismatch here
     * means no match.
     */

    lh = Tcl_GetCharLength(haystack);
    if (haystack->bytes && (lh == haystack->length) && needle->bytes
		&& (ln == needle->length)) {
	/*
	 * Both haystack and needle are all single-byte chars.
	 */



	char *found = strstr(haystack->bytes + start, needle->bytes);

	if (found) {
	    return (found - haystack->bytes);
	} else {
	    return -1;
	}
    } else {
	/*


	 * Do the search on the unicode representation for simplicity.
	 */



	Tcl_UniChar *try, *end, *uh;
	Tcl_UniChar *un = Tcl_GetUnicodeFromObj(needle, &ln);

	uh = Tcl_GetUnicodeFromObj(haystack, &lh);
	end = uh + lh;

	for (try = uh + start; try + ln <= end; try++) {

	    if ((*try == *un) && (0 ==
		    memcmp(try + 1, un + 1, (ln-1) * sizeof(Tcl_UniChar)))) {
		return (try - uh);
	    }

	}
	return -1;
    }
}

/*
 *---------------------------------------------------------------------------

	    Tcl_UniChar *to;

	    /*
	     * Create a non-empty, pure unicode value, so we can coax
	     * Tcl_SetObjLength into growing the unicode rep buffer.
	     */


	    objPtr = Tcl_NewUnicodeObj(&ch, 1);
	    Tcl_SetObjLength(objPtr, stringPtr->numChars);
	    to = Tcl_GetUnicode(objPtr);
	    while (--src >= from) {
		*to++ = *src;
	    }
	} else {

    Tcl_Obj *objPtr,
    const char *bytes,
    int numBytes,
    int numAppendChars)
{
    String *stringPtr = GET_STRING(objPtr);
    int needed, numOrigChars = 0;
    Tcl_UniChar *dst, unichar = 0;

    if (stringPtr->hasUnicode) {
	numOrigChars = stringPtr->numChars;
    }
    if (numAppendChars == -1) {
	TclNumUtfChars(numAppendChars, bytes, numBytes);
    }

    stringPtr->hasUnicode = 1;
    if (bytes) {
	stringPtr->numChars = needed;
    } else {
	numAppendChars = 0;
    }
    for (dst=stringPtr->unicode + numOrigChars; numAppendChars-- > 0; dst++) {
	bytes += TclUtfToUniChar(bytes, &unichar);
	*dst = unichar;
    }
    *dst = 0;
}

/*
 *----------------------------------------------------------------------
 *

#   define TclWinGetServByName 0
#   define TclWinGetSockOpt 0
#   define TclWinSetSockOpt 0
#   define TclWinNToHS 0
#   define TclBNInitBignumFromWideUInt 0
#   define TclBNInitBignumFromWideInt 0
#   define TclBNInitBignumFromLong 0
#   define Tcl_AppendResultVA 0
#   define Tcl_AppendStringsToObjVA 0
#   define Tcl_SetErrorCodeVA 0
#   define Tcl_PanicVA 0
#   define Tcl_VarEvalVA 0
#else
#define TclSetStartupScriptPath setStartupScriptPath
static void TclSetStartupScriptPath(Tcl_Obj *path)
{
    Tcl_SetStartupScript(path, NULL);
}
#define TclGetStartupScriptPath getStartupScriptPath

    Tcl_NRExprObj, /* 625 */
    Tcl_NRSubstObj, /* 626 */
    Tcl_LoadFile, /* 627 */
    Tcl_FindSymbol, /* 628 */
    Tcl_FSUnloadFile, /* 629 */
    Tcl_ZlibStreamSetCompressionDictionary, /* 630 */
    Tcl_OpenTcpServerEx, /* 631 */
    TclZipfs_Mount, /* 632 */
    TclZipfs_Unmount, /* 633 */
    TclZipfs_AppHook, /* 634 */
};

/* !END!: Do not edit above this line. */

int
Tcl_ScanCountedElement(
    const char *src,		/* String to convert to Tcl list element. */
    int length,			/* Number of bytes in src, or -1. */
    int *flagPtr)		/* Where to store information to guide
				 * Tcl_ConvertElement. */
{
    char flags = CONVERT_ANY;
    int numBytes = TclScanElement(src, length, &flags);

    *flagPtr = flags;
    return numBytes;
}

/*

 *----------------------------------------------------------------------
 */

int
TclScanElement(
    const char *src,		/* String to convert to Tcl list element. */
    int length,			/* Number of bytes in src, or -1. */
    char *flagPtr)		/* Where to store information to guide
				 * Tcl_ConvertElement. */
{
    const char *p = src;
    int nestingLevel = 0;	/* Brace nesting count */
    int forbidNone = 0;		/* Do not permit CONVERT_NONE mode. Something
				 * needs protection or escape. */
    int requireEscape = 0;	/* Force use of CONVERT_ESCAPE mode.  For some

 */

char *
Tcl_Merge(
    int argc,			/* How many strings to merge. */
    const char *const *argv)	/* Array of string values. */
{
#define LOCAL_SIZE 64
    char localFlags[LOCAL_SIZE], *flagPtr = NULL;
    int i, bytesNeeded = 0;
    char *result, *dst;


    /*
     * Handle empty list case first, so logic of the general case can be
     * simpler.
     */

    if (argc == 0) {
	result = ckalloc(1);
	result[0] = '\0';
	return result;
    }

    /*
     * Pass 1: estimate space, gather flags.
     */

    if (argc <= LOCAL_SIZE) {
	flagPtr = localFlags;














    } else {
	flagPtr = ckalloc(argc);
    }
    for (i = 0; i < argc; i++) {
	flagPtr[i] = ( i ? TCL_DONT_QUOTE_HASH : 0 );
	bytesNeeded += TclScanElement(argv[i], -1, &flagPtr[i]);
	if (bytesNeeded < 0) {
	    Tcl_Panic("max size for a Tcl value (%d bytes) exceeded", INT_MAX);
	}

Tcl_DStringAppendElement(
    Tcl_DString *dsPtr,		/* Structure describing dynamic string. */
    const char *element)	/* String to append. Must be
				 * null-terminated. */
{
    char *dst = dsPtr->string + dsPtr->length;
    int needSpace = TclNeedSpace(dsPtr->string, dst);
    char flags = needSpace ? TCL_DONT_QUOTE_HASH : 0;
    int newSize = dsPtr->length + needSpace
	    + TclScanElement(element, -1, &flags);

    /*
     * Allocate a larger buffer for the string if the current one isn't large
     * enough. Allocate extra space in the new buffer so that there will be
     * room to grow before we have to allocate again. SPECIAL NOTE: must use

/*
 * tclZipfs.c --
 *
 *	Implementation of the ZIP filesystem used in TIP 430
 *	Adapted from the implentation for AndroWish.
 *
 * Coptright (c) 2016-2017 Sean Woods <yoda@etoyoc.com>
 * Copyright (c) 2013-2015 Christian Werner <chw@ch-werner.de>
 *
 * See the file "license.terms" for information on usage and redistribution of
 * this file, and for a DISCLAIMER OF ALL WARRANTIES.
 */

#include "tclInt.h"
#include "tclFileSystem.h"

#if !defined(_WIN32) && !defined(_WIN64)
#include <sys/mman.h>
#endif
#include <errno.h>
#include <string.h>
#include <sys/stat.h>
#include <time.h>
#include <stdlib.h>
#include <fcntl.h>

#ifdef HAVE_ZLIB
#include "zlib.h"
#include "crypt.h"

#define ZIPFS_VOLUME      "//zipfs:/"
#define ZIPFS_APP_MOUNT   "//zipfs:/app"
#define ZIPFS_ZIP_MOUNT   "//zipfs:/lib/tcl"

#define ZIPFS_VOLUME_LEN 9

/*
 * Various constants and offsets found in ZIP archive files
 */

#define ZIP_SIG_LEN                     4

/* Local header of ZIP archive member (at very beginning of each member). */
#define ZIP_LOCAL_HEADER_SIG            0x04034b50
#define ZIP_LOCAL_HEADER_LEN            30
#define ZIP_LOCAL_SIG_OFFS              0
#define ZIP_LOCAL_VERSION_OFFS          4
#define ZIP_LOCAL_FLAGS_OFFS            6
#define ZIP_LOCAL_COMPMETH_OFFS         8
#define ZIP_LOCAL_MTIME_OFFS            10
#define ZIP_LOCAL_MDATE_OFFS            12
#define ZIP_LOCAL_CRC32_OFFS            14
#define ZIP_LOCAL_COMPLEN_OFFS          18
#define ZIP_LOCAL_UNCOMPLEN_OFFS        22
#define ZIP_LOCAL_PATHLEN_OFFS          26
#define ZIP_LOCAL_EXTRALEN_OFFS         28

/* Central header of ZIP archive member at end of ZIP file. */
#define ZIP_CENTRAL_HEADER_SIG          0x02014b50
#define ZIP_CENTRAL_HEADER_LEN          46
#define ZIP_CENTRAL_SIG_OFFS            0
#define ZIP_CENTRAL_VERSIONMADE_OFFS    4
#define ZIP_CENTRAL_VERSION_OFFS        6
#define ZIP_CENTRAL_FLAGS_OFFS          8
#define ZIP_CENTRAL_COMPMETH_OFFS       10
#define ZIP_CENTRAL_MTIME_OFFS          12
#define ZIP_CENTRAL_MDATE_OFFS          14
#define ZIP_CENTRAL_CRC32_OFFS          16
#define ZIP_CENTRAL_COMPLEN_OFFS        20
#define ZIP_CENTRAL_UNCOMPLEN_OFFS      24
#define ZIP_CENTRAL_PATHLEN_OFFS        28
#define ZIP_CENTRAL_EXTRALEN_OFFS       30
#define ZIP_CENTRAL_FCOMMENTLEN_OFFS    32
#define ZIP_CENTRAL_DISKFILE_OFFS       34
#define ZIP_CENTRAL_IATTR_OFFS          36
#define ZIP_CENTRAL_EATTR_OFFS          38
#define ZIP_CENTRAL_LOCALHDR_OFFS       42

/* Central end signature at very end of ZIP file. */
#define ZIP_CENTRAL_END_SIG             0x06054b50
#define ZIP_CENTRAL_END_LEN             22
#define ZIP_CENTRAL_END_SIG_OFFS        0
#define ZIP_CENTRAL_DISKNO_OFFS         4
#define ZIP_CENTRAL_DISKDIR_OFFS        6
#define ZIP_CENTRAL_ENTS_OFFS           8
#define ZIP_CENTRAL_TOTALENTS_OFFS      10
#define ZIP_CENTRAL_DIRSIZE_OFFS        12
#define ZIP_CENTRAL_DIRSTART_OFFS       16
#define ZIP_CENTRAL_COMMENTLEN_OFFS     20

#define ZIP_MIN_VERSION                 20
#define ZIP_COMPMETH_STORED             0
#define ZIP_COMPMETH_DEFLATED           8

#define ZIP_PASSWORD_END_SIG            0x5a5a4b50

/*
 * Macros to read and write 16 and 32 bit integers from/to ZIP archives.
 */

#define zip_read_int(p)         				\
    ((p)[0] | ((p)[1] << 8) | ((p)[2] << 16) | ((p)[3] << 24))
#define zip_read_short(p)       				\
    ((p)[0] | ((p)[1] << 8))

#define zip_write_int(p, v)					\
    (p)[0] = (v) & 0xff; (p)[1] = ((v) >> 8) & 0xff;		\
    (p)[2] = ((v) >> 16) & 0xff; (p)[3] = ((v) >> 24) & 0xff;
#define zip_write_short(p, v)					\
    (p)[0] = (v) & 0xff; (p)[1] = ((v) >> 8) & 0xff;

/*
 * Windows drive letters.
 */

#if defined(_WIN32) || defined(_WIN64)
#define HAS_DRIVES 1
static const char drvletters[] =
    "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
#else
#define HAS_DRIVES 0
#endif

/*
 * Mutex to protect localtime(3) when no reentrant version available.
 */

#if !defined(_WIN32) && !defined(_WIN64)
#ifndef HAVE_LOCALTIME_R
#ifdef TCL_THREADS
TCL_DECLARE_MUTEX(localtimeMutex)
#endif
#endif
#endif

/*
 * In-core description of mounted ZIP archive file.
 */

typedef struct ZipFile {
    char *name;               /* Archive name */
    Tcl_Channel chan;         /* Channel handle or NULL */
    unsigned char *data;      /* Memory mapped or malloc'ed file */
    long length;              /* Length of memory mapped file */
    unsigned char *tofree;    /* Non-NULL if malloc'ed file */
    int nfiles;               /* Number of files in archive */
    int baseoffs;             /* Archive start */
    int baseoffsp;            /* Password start */
    int centoffs;             /* Archive directory start */
    char pwbuf[264];          /* Password buffer */
#if defined(_WIN32) || defined(_WIN64)
    HANDLE mh;
#endif
    int nopen;                /* Number of open files on archive */
    struct ZipEntry *entries; /* List of files in archive */
    struct ZipEntry *topents; /* List of top-level dirs in archive */
#if HAS_DRIVES
    int mntdrv;	              /* Drive letter of mount point */
#endif
    int mntptlen;             /* Length of mount point */
    char mntpt[1];            /* Mount point */
} ZipFile;

/*
 * In-core description of file contained in mounted ZIP archive.
 */

typedef struct ZipEntry {
    char *name;               /* The full pathname of the virtual file */
    ZipFile *zipfile;         /* The ZIP file holding this virtual file */
    long offset;              /* Data offset into memory mapped ZIP file */
    int nbyte;                /* Uncompressed size of the virtual file */
    int nbytecompr;           /* Compressed size of the virtual file */
    int cmeth;                /* Compress method */
    int isdir;	              /* Set to 1 if directory */
    int depth; 	              /* Number of slashes in path. */
    int crc32;                /* CRC-32 */
    int timestamp;            /* Modification time */
    int isenc;                /* True if data is encrypted */
    unsigned char *data;      /* File data if written */
    struct ZipEntry *next;    /* Next file in the same archive */
    struct ZipEntry *tnext;   /* Next top-level dir in archive */
} ZipEntry;

/*
 * File channel for file contained in mounted ZIP archive.
 */

typedef struct ZipChannel {
    ZipFile *zipfile;         /* The ZIP file holding this channel */
    ZipEntry *zipentry;       /* Pointer back to virtual file */
    unsigned long nmax;       /* Max. size for write */
    unsigned long nbyte;      /* Number of bytes of uncompressed data */
    unsigned long nread;      /* Pos of next byte to be read from the channel */
    unsigned char *ubuf;      /* Pointer to the uncompressed data */
    int iscompr;              /* True if data is compressed */
    int isdir;	              /* Set to 1 if directory */
    int isenc;                /* True if data is encrypted */
    int iswr;                 /* True if open for writing */
    unsigned long keys[3];    /* Key for decryption */
} ZipChannel;

/*
 * Global variables.
 *
 * Most are kept in single ZipFS struct. When build with threading
 * support this struct is protected by the ZipFSMutex (see below).
 *
 * The "fileHash" component is the process wide global table of all known
 * ZIP archive members in all mounted ZIP archives.
 *
 * The "zipHash" components is the process wide global table of all mounted
 * ZIP archive files.
 */

static struct {
    int initialized;		/* True when initialized */
    int lock;			/* RW lock, see below */
    int waiters;		/* RW lock, see below */
    int wrmax;			/* Maximum write size of a file */
    int idCount;		/* Counter for channel names */
    Tcl_HashTable fileHash;	/* File name to ZipEntry mapping */
    Tcl_HashTable zipHash;	/* Mount to ZipFile mapping */
} ZipFS = {
    0, 0, 0, 0, 0,
};

/*
 * For password rotation.
 */

static const char pwrot[16] = {
    0x00, 0x80, 0x40, 0xc0, 0x20, 0xa0, 0x60, 0xe0,
    0x10, 0x90, 0x50, 0xd0, 0x30, 0xb0, 0x70, 0xf0
};

/*
 * Table to compute CRC32.
 */

static const unsigned long crc32tab[256] = {
    0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419,
    0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4,
    0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07,
    0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de,
    0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856,
    0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
    0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4,
    0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,
    0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3,
    0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a,
    0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599,
    0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
    0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190,
    0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f,
    0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0x0f00f934, 0x9609a88e,
    0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01,
    0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed,
    0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
    0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3,
    0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2,
    0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a,
    0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5,
    0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010,
    0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
    0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17,
    0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6,
    0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615,
    0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8,
    0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 0xf00f9344,
    0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
    0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a,
    0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,
    0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1,
    0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c,
    0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef,
    0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
    0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe,
    0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31,
    0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c,
    0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713,
    0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b,
    0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
    0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1,
    0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c,
    0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278,
    0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7,
    0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66,
    0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
    0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605,
    0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8,
    0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b,
    0x2d02ef8d,
};

/*
 *-------------------------------------------------------------------------
 *
 * ReadLock, WriteLock, Unlock --
 *
 *	POSIX like rwlock functions to support multiple readers
 *	and single writer on internal structs.
 *
 *	Limitations:
 *	- a read lock cannot be promoted to a write lock
 *	- a write lock may not be nested
 *
 *-------------------------------------------------------------------------
 */

TCL_DECLARE_MUTEX(ZipFSMutex)

#ifdef TCL_THREADS

static Tcl_Condition ZipFSCond;

static void
ReadLock(void)
{
    Tcl_MutexLock(&ZipFSMutex);
    while (ZipFS.lock < 0) {
	ZipFS.waiters++;
	Tcl_ConditionWait(&ZipFSCond, &ZipFSMutex, NULL);
	ZipFS.waiters--;
    }
    ZipFS.lock++;
    Tcl_MutexUnlock(&ZipFSMutex);
}

static void
WriteLock(void)
{
    Tcl_MutexLock(&ZipFSMutex);
    while (ZipFS.lock != 0) {
	ZipFS.waiters++;
	Tcl_ConditionWait(&ZipFSCond, &ZipFSMutex, NULL);
	ZipFS.waiters--;
    }
    ZipFS.lock = -1;
    Tcl_MutexUnlock(&ZipFSMutex);
}

static void
Unlock(void)
{
    Tcl_MutexLock(&ZipFSMutex);
    if (ZipFS.lock > 0) {
	--ZipFS.lock;
    } else if (ZipFS.lock < 0) {
	ZipFS.lock = 0;
    }
    if ((ZipFS.lock == 0) && (ZipFS.waiters > 0)) {
	Tcl_ConditionNotify(&ZipFSCond);
    }
    Tcl_MutexUnlock(&ZipFSMutex);
}

#else

#define ReadLock()	do {} while (0)
#define WriteLock()	do {} while (0)
#define Unlock()	do {} while (0)

#endif

/*
 *-------------------------------------------------------------------------
 *
 * DosTimeDate, ToDosTime, ToDosDate --
 *
 *	Functions to perform conversions between DOS time stamps
 *	and POSIX time_t.
 *
 *-------------------------------------------------------------------------
 */

static time_t
DosTimeDate(int dosDate, int dosTime)
{
    struct tm tm;
    time_t ret;

    memset(&tm, 0, sizeof (tm));
    tm.tm_year = (((dosDate & 0xfe00) >> 9) + 80);
    tm.tm_mon = ((dosDate & 0x1e0) >> 5) - 1;
    tm.tm_mday = dosDate & 0x1f;
    tm.tm_hour = (dosTime & 0xf800) >> 11;
    tm.tm_min = (dosTime & 0x7e) >> 5;
    tm.tm_sec = (dosTime & 0x1f) << 1;
    ret = mktime(&tm);
    if (ret == (time_t) -1) {
	/* fallback to 1980-01-01T00:00:00+00:00 (DOS epoch) */
	ret = (time_t) 315532800;
    }
    return ret;
}

static int
ToDosTime(time_t when)
{
    struct tm *tmp, tm;

#ifdef TCL_THREADS
#if defined(_WIN32) || defined(_WIN64)
    /* Win32 uses thread local storage */
    tmp = localtime(&when);
    tm = *tmp;
#else
#ifdef HAVE_LOCALTIME_R
    tmp = &tm;
    localtime_r(&when, tmp);
#else
    Tcl_MutexLock(&localtimeMutex);
    tmp = localtime(&when);
    tm = *tmp;
    Tcl_MutexUnlock(&localtimeMutex);
#endif
#endif
#else
    tmp = localtime(&when);
    tm = *tmp;
#endif
    return (tm.tm_hour << 11) | (tm.tm_min << 5) | (tm.tm_sec >> 1);
}

static int
ToDosDate(time_t when)
{
    struct tm *tmp, tm;

#ifdef TCL_THREADS
#if defined(_WIN32) || defined(_WIN64)
    /* Win32 uses thread local storage */
    tmp = localtime(&when);
    tm = *tmp;
#else
#ifdef HAVE_LOCALTIME_R
    tmp = &tm;
    localtime_r(&when, tmp);
#else
    Tcl_MutexLock(&localtimeMutex);
    tmp = localtime(&when);
    tm = *tmp;
    Tcl_MutexUnlock(&localtimeMutex);
#endif
#endif
#else
    tmp = localtime(&when);
    tm = *tmp;
#endif
    return ((tm.tm_year - 80) << 9) | ((tm.tm_mon + 1) << 5) | tm.tm_mday;
}

/*
 *-------------------------------------------------------------------------
 *
 * CountSlashes --
 *
 *	This function counts the number of slashes in a pathname string.
 *
 * Results:
 *	Number of slashes found in string.
 *
 * Side effects:
 *	None.
 *
 *-------------------------------------------------------------------------
 */

static int
CountSlashes(const char *string)
{
    int count = 0;
    const char *p = string;

    while (*p != '\0') {
	if (*p == '/') {
	    count++;
	}
	p++;
    }
    return count;
}

/*
 *-------------------------------------------------------------------------
 *
 * CanonicalPath --
 *
 *	This function computes the canonical path from a directory
 *	and file name components into the specified Tcl_DString.
 *
 * Results:
 *	Returns the pointer to the canonical path contained in the
 *	specified Tcl_DString.
 *
 * Side effects:
 *	Modifies the specified Tcl_DString.
 *
 *-------------------------------------------------------------------------
 */

static char *
CanonicalPath(const char *root, const char *tail, Tcl_DString *dsPtr,int ZIPFSPATH)
{
    char *path;
    char *result;
    int i, j, c, isunc = 0, isvfs=0, n=0;
#if HAS_DRIVES
    int zipfspath=1;
    if ((tail[0] != '\0') && (strchr(drvletters, tail[0]) != NULL) &&
	    (tail[1] == ':')) {
	tail += 2;
	zipfspath=0;
    }
    /* UNC style path */
    if (tail[0] == '\\') {
	root = "";
	++tail;
	zipfspath=0;
    }
    if (tail[0] == '\\') {
	root = "/";
	++tail;
	zipfspath=0;
    }
    if(zipfspath) {
#endif
	/* UNC style path */
	if(root && strncmp(root,ZIPFS_VOLUME,ZIPFS_VOLUME_LEN)==0) {
	    isvfs=1;
	} else if (tail && strncmp(tail,ZIPFS_VOLUME,ZIPFS_VOLUME_LEN) == 0) {
	    isvfs=2;
	}
	if(isvfs!=1) {
	    if ((root[0] == '/') && (root[1] == '/')) {
		isunc = 1;
	    }
	}
#if HAS_DRIVES
    }
#endif
    if(isvfs!=2) {
	if (tail[0] == '/') {
	    if(isvfs!=1) {
		root = "";
	    }
	    ++tail;
	    isunc = 0;
	}
	if (tail[0] == '/') {
	    if(isvfs!=1) {
		root = "/";
	    }
	    ++tail;
	    isunc = 1;
	}
    }
    i = strlen(root);
    j = strlen(tail);
    if(isvfs==1) {
	if(i>ZIPFS_VOLUME_LEN) {
	    Tcl_DStringSetLength(dsPtr, i + j + 1);
	    path = Tcl_DStringValue(dsPtr);
	    memcpy(path, root, i);
	    path[i++] = '/';
	    memcpy(path + i, tail, j);
	} else {
	    Tcl_DStringSetLength(dsPtr, i + j);
	    path = Tcl_DStringValue(dsPtr);
	    memcpy(path, root, i);
	    memcpy(path + i, tail, j);
	}
    } else if(isvfs==2) {
	Tcl_DStringSetLength(dsPtr, j);
	path = Tcl_DStringValue(dsPtr);
	memcpy(path, tail, j);
    } else {
	if (ZIPFSPATH) {
	    Tcl_DStringSetLength(dsPtr, i + j + ZIPFS_VOLUME_LEN);
	    path = Tcl_DStringValue(dsPtr);
	    memcpy(path, ZIPFS_VOLUME, ZIPFS_VOLUME_LEN);
	    memcpy(path + ZIPFS_VOLUME_LEN + i , tail, j);
	} else {
	    Tcl_DStringSetLength(dsPtr, i + j + 1);
	    path = Tcl_DStringValue(dsPtr);
	    memcpy(path, root, i);
	    path[i++] = '/';
	    memcpy(path + i, tail, j);
	}
    }
#if HAS_DRIVES
    for (i = 0; path[i] != '\0'; i++) {
	if (path[i] == '\\') {
	    path[i] = '/';
	}
    }
#endif
    if(ZIPFSPATH) {
	n=ZIPFS_VOLUME_LEN;
    } else {
	n=0;
    }
    for (i = j = n; (c = path[i]) != '\0'; i++) {
	if (c == '/') {
	    int c2 = path[i + 1];
	    if (c2 == '/') {
		continue;
	    }
	    if (c2 == '.') {
		int c3 = path[i + 2];
		if ((c3 == '/') || (c3 == '\0')) {
		    i++;
		    continue;
		}
		if ((c3 == '.') &&
			((path[i + 3] == '/') || (path [i + 3] == '\0'))) {
		    i += 2;
		    while ((j > 0) && (path[j - 1] != '/')) {
			j--;
		    }
		    if (j > isunc) {
			--j;
			while ((j > 1 + isunc) && (path[j - 2] == '/')) {
			    j--;
			}
		    }
		    continue;
		}
	    }
	}
	path[j++] = c;
    }
    if (j == 0) {
	path[j++] = '/';
    }
    path[j] = 0;
    Tcl_DStringSetLength(dsPtr, j);
    result=Tcl_DStringValue(dsPtr);
    return result;
}



/*
 *-------------------------------------------------------------------------
 *
 * ZipFSLookup --
 *
 *	This function returns the ZIP entry struct corresponding to
 *	the ZIP archive member of the given file name.
 *
 * Results:
 *	Returns the pointer to ZIP entry struct or NULL if the
 *	the given file name could not be found in the global list
 *	of ZIP archive members.
 *
 * Side effects:
 *	None.
 *
 *-------------------------------------------------------------------------
 */

static ZipEntry *
ZipFSLookup(char *filename)
{
    Tcl_HashEntry *hPtr;
    ZipEntry *z;
    Tcl_DString ds;
    Tcl_DStringInit(&ds);
    hPtr = Tcl_FindHashEntry(&ZipFS.fileHash, filename);
    z = hPtr ? (ZipEntry *) Tcl_GetHashValue(hPtr) : NULL;
    Tcl_DStringFree(&ds);
    return z;
}

#ifdef NEVER_USED

/*
 *-------------------------------------------------------------------------
 *
 * ZipFSLookupMount --
 *
 *	This function returns an indication if the given file name
 *	corresponds to a mounted ZIP archive file.
 *
 * Results:
 *	Returns true, if the given file name is a mounted ZIP archive file.
 *
 * Side effects:
 *	None.
 *
 *-------------------------------------------------------------------------
 */

static int
ZipFSLookupMount(char *filename)
{
    Tcl_HashEntry *hPtr;
    Tcl_HashSearch search;
    ZipFile *zf;
    int match = 0;
    hPtr = Tcl_FirstHashEntry(&ZipFS.zipHash, &search);
    while (hPtr != NULL) {
	if ((zf = (ZipFile *) Tcl_GetHashValue(hPtr)) != NULL) {
	    if (strcmp(zf->mntpt, filename) == 0) {
		match = 1;
		break;
	    }
	}
	hPtr = Tcl_NextHashEntry(&search);
    }
    return match;
}
#endif

/*
 *-------------------------------------------------------------------------
 *
 * ZipFSCloseArchive --
 *
 *	This function closes a mounted ZIP archive file.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	A memory mapped ZIP archive is unmapped, allocated memory is
 *	released.
 *
 *-------------------------------------------------------------------------
 */

static void
ZipFSCloseArchive(Tcl_Interp *interp, ZipFile *zf)
{
#if defined(_WIN32) || defined(_WIN64)
    if ((zf->data != NULL) && (zf->tofree == NULL)) {
	UnmapViewOfFile(zf->data);
	zf->data = NULL;
    }
    if (zf->mh != INVALID_HANDLE_VALUE) {
	CloseHandle(zf->mh);
    }
#else
    if ((zf->data != MAP_FAILED) && (zf->tofree == NULL)) {
	munmap(zf->data, zf->length);
	zf->data = MAP_FAILED;
    }
#endif
    if (zf->tofree != NULL) {
	Tcl_Free((char *) zf->tofree);
	zf->tofree = NULL;
    }
    Tcl_Close(interp, zf->chan);
    zf->chan = NULL;
}

/*
 *-------------------------------------------------------------------------
 *
 * ZipFSOpenArchive --
 *
 *	This function opens a ZIP archive file for reading. An attempt
 *	is made to memory map that file. Otherwise it is read into
 *	an allocated memory buffer. The ZIP archive header is verified
 *	and must be valid for the function to succeed. When "needZip"
 *	is zero an embedded ZIP archive in an executable file is accepted.
 *
 * Results:
 *	TCL_OK on success, TCL_ERROR otherwise with an error message
 *	placed into the given "interp" if it is not NULL.
 *
 * Side effects:
 *	ZIP archive is memory mapped or read into allocated memory,
 *	the given ZipFile struct is filled with information about
 *	the ZIP archive file.
 *
 *-------------------------------------------------------------------------
 */

static int
ZipFSOpenArchive(Tcl_Interp *interp, const char *zipname, int needZip,
		 ZipFile *zf)
{
    int i;
    ClientData handle;
    unsigned char *p, *q;

#if defined(_WIN32) || defined(_WIN64)
    zf->data = NULL;
    zf->mh = INVALID_HANDLE_VALUE;
#else
    zf->data = MAP_FAILED;
#endif
    zf->length = 0;
    zf->nfiles = 0;
    zf->baseoffs = zf->baseoffsp = 0;
    zf->tofree = NULL;
    zf->pwbuf[0] = 0;
    zf->chan = Tcl_OpenFileChannel(interp, zipname, "r", 0);
    if (zf->chan == NULL) {
	return TCL_ERROR;
    }
    if (Tcl_GetChannelHandle(zf->chan, TCL_READABLE, &handle) != TCL_OK) {
	if (Tcl_SetChannelOption(interp, zf->chan, "-translation", "binary")
	    != TCL_OK) {
	    goto error;
	}
	if (Tcl_SetChannelOption(interp, zf->chan, "-encoding", "binary")
	    != TCL_OK) {
	    goto error;
	}
	zf->length = Tcl_Seek(zf->chan, 0, SEEK_END);
	if ((zf->length <= 0) || (zf->length > 64 * 1024 * 1024)) {
	    if (interp) {
		Tcl_SetObjResult(interp,
				 Tcl_NewStringObj("illegal file size", -1));
	    }
	    goto error;
	}
	Tcl_Seek(zf->chan, 0, SEEK_SET);
	zf->tofree = zf->data = (unsigned char *) Tcl_AttemptAlloc(zf->length);
	if (zf->tofree == NULL) {
	    if (interp) {
		Tcl_SetObjResult(interp,
				 Tcl_NewStringObj("out of memory", -1));
	    }
	    goto error;
	}
	i = Tcl_Read(zf->chan, (char *) zf->data, zf->length);
	if (i != zf->length) {
	    if (interp) {
		Tcl_SetObjResult(interp,
				 Tcl_NewStringObj("file read error", -1));
	    }
	    goto error;
	}
	Tcl_Close(interp, zf->chan);
	zf->chan = NULL;
    } else {
#if defined(_WIN32) || defined(_WIN64)
	zf->length = GetFileSize((HANDLE) handle, 0);
	if ((zf->length == INVALID_FILE_SIZE) ||
	    (zf->length < ZIP_CENTRAL_END_LEN)) {
	    if (interp != NULL) {
		Tcl_SetObjResult(interp,
				 Tcl_NewStringObj("invalid file size", -1));
	    }
	    goto error;
	}
	zf->mh = CreateFileMapping((HANDLE) handle, 0, PAGE_READONLY, 0,
				   zf->length, 0);
	if (zf->mh == INVALID_HANDLE_VALUE) {
	    if (interp != NULL) {
		Tcl_SetObjResult(interp,
				 Tcl_NewStringObj("file mapping failed", -1));
	    }
	    goto error;
	}
	zf->data = MapViewOfFile(zf->mh, FILE_MAP_READ, 0, 0, zf->length);
	if (zf->data == NULL) {
	    if (interp != NULL) {
		Tcl_SetObjResult(interp,
				 Tcl_NewStringObj("file mapping failed", -1));
	    }
	    goto error;
	}
#else
	zf->length = lseek((int) (long) handle, 0, SEEK_END);
	if ((zf->length == -1) || (zf->length < ZIP_CENTRAL_END_LEN)) {
	    if (interp != NULL) {
		Tcl_SetObjResult(interp,
				 Tcl_NewStringObj("invalid file size", -1));
	    }
	    goto error;
	}
	lseek((int) (long) handle, 0, SEEK_SET);
	zf->data = (unsigned char *) mmap(0, zf->length, PROT_READ,
					  MAP_FILE | MAP_PRIVATE,
					  (int) (long) handle, 0);
	if (zf->data == MAP_FAILED) {
	    if (interp != NULL) {
		Tcl_SetObjResult(interp,
				 Tcl_NewStringObj("file mapping failed", -1));
	    }
	    goto error;
	}
#endif
    }
    p = zf->data + zf->length - ZIP_CENTRAL_END_LEN;
    while (p >= zf->data) {
	if (*p == (ZIP_CENTRAL_END_SIG & 0xFF)) {
	    if (zip_read_int(p) == ZIP_CENTRAL_END_SIG) {
		break;
	    }
	    p -= ZIP_SIG_LEN;
	} else {
	    --p;
	}
    }
    if (p < zf->data) {
	if (!needZip) {
	    zf->baseoffs = zf->baseoffsp = zf->length;
	    return TCL_OK;
	}
	if (interp != NULL) {
	    Tcl_SetObjResult(interp,
			     Tcl_NewStringObj("wrong end signature", -1));
	}
	goto error;
    }
    zf->nfiles = zip_read_short(p + ZIP_CENTRAL_ENTS_OFFS);
    if (zf->nfiles == 0) {
	if (!needZip) {
	    zf->baseoffs = zf->baseoffsp = zf->length;
	    return TCL_OK;
	}
	if (interp != NULL) {
	    Tcl_SetObjResult(interp,
			     Tcl_NewStringObj("empty archive", -1));
	}
	goto error;
    }
    q = zf->data + zip_read_int(p + ZIP_CENTRAL_DIRSTART_OFFS);
    p -= zip_read_int(p + ZIP_CENTRAL_DIRSIZE_OFFS);
    if ((p < zf->data) || (p > (zf->data + zf->length)) ||
	(q < zf->data) || (q > (zf->data + zf->length))) {
	if (!needZip) {
	    zf->baseoffs = zf->baseoffsp = zf->length;
	    return TCL_OK;
	}
	if (interp != NULL) {
	    Tcl_SetObjResult(interp,
		Tcl_NewStringObj("archive directory not found", -1));
	}
	goto error;
    }
    zf->baseoffs = zf->baseoffsp = p - q;
    zf->centoffs = p - zf->data;
    q = p;
    for (i = 0; i < zf->nfiles; i++) {
	int pathlen, comlen, extra;

	if ((q + ZIP_CENTRAL_HEADER_LEN) > (zf->data + zf->length)) {
	    if (interp != NULL) {
		Tcl_SetObjResult(interp,
		    Tcl_NewStringObj("wrong header length", -1));
	    }
	    goto error;
	}
	if (zip_read_int(q) != ZIP_CENTRAL_HEADER_SIG) {
	    if (interp != NULL) {
		Tcl_SetObjResult(interp,
		    Tcl_NewStringObj("wrong header signature", -1));
	    }
	    goto error;
	}
	pathlen = zip_read_short(q + ZIP_CENTRAL_PATHLEN_OFFS);
	comlen = zip_read_short(q + ZIP_CENTRAL_FCOMMENTLEN_OFFS);
	extra = zip_read_short(q + ZIP_CENTRAL_EXTRALEN_OFFS);
	q += pathlen + comlen + extra + ZIP_CENTRAL_HEADER_LEN;
    }
    q = zf->data + zf->baseoffs;
    if ((zf->baseoffs >= 6) &&
	(zip_read_int(q - 4) == ZIP_PASSWORD_END_SIG)) {
	i = q[-5];
	if (q - 5 - i > zf->data) {
	    zf->pwbuf[0] = i;
	    memcpy(zf->pwbuf + 1, q - 5 - i, i);
	    zf->baseoffsp -= i ? (5 + i) : 0;
	}
    }
    return TCL_OK;

error:
    ZipFSCloseArchive(interp, zf);
    return TCL_ERROR;
}

/*
 *-------------------------------------------------------------------------
 *
 * TclZipfs_Mount --
 *
 *      This procedure is invoked to mount a given ZIP archive file on
 *	a given mountpoint with optional ZIP password.
 *
 * Results:
 *      A standard Tcl result.
 *
 * Side effects:
 *      A ZIP archive file is read, analyzed and mounted, resources are
 *	allocated.
 *
 *-------------------------------------------------------------------------
 */

int
TclZipfs_Mount(Tcl_Interp *interp, const char *zipname, const char *mntpt,
	    const char *passwd)
{
    int i, pwlen, isNew;
    ZipFile *zf, zf0;
    ZipEntry *z;
    Tcl_HashEntry *hPtr;
    Tcl_DString ds, fpBuf;
    unsigned char *q;

    ReadLock();
    if (!ZipFS.initialized) {
	if (interp != NULL) {
	    Tcl_SetObjResult(interp,
		    Tcl_NewStringObj("not initialized", -1));
	}
	Unlock();
	return TCL_ERROR;
    }
    if (zipname == NULL) {
	Tcl_HashSearch search;
	int ret = TCL_OK;

	i = 0;
	hPtr = Tcl_FirstHashEntry(&ZipFS.zipHash, &search);
	while (hPtr != NULL) {
	    if ((zf = (ZipFile *) Tcl_GetHashValue(hPtr)) != NULL) {
		if (interp != NULL) {
		    Tcl_AppendElement(interp, zf->mntpt);
		    Tcl_AppendElement(interp, zf->name);
		}
		++i;
	    }
	    hPtr = Tcl_NextHashEntry(&search);
	}
	if (interp == NULL) {
	    ret = (i > 0) ? TCL_OK : TCL_BREAK;
	}
	Unlock();
	return ret;
    }
    if (mntpt == NULL) {
	if (interp == NULL) {
	    Unlock();
	    return TCL_OK;
	}
	hPtr = Tcl_FindHashEntry(&ZipFS.zipHash, zipname);
	if (hPtr != NULL) {
	    if ((zf = Tcl_GetHashValue(hPtr)) != NULL) {
		Tcl_SetObjResult(interp,
			Tcl_NewStringObj(zf->mntpt, zf->mntptlen));
	    }
	}
	Unlock();
	return TCL_OK;
    }
    Unlock();
    pwlen = 0;
    if (passwd != NULL) {
	pwlen = strlen(passwd);
	if ((pwlen > 255) || (strchr(passwd, 0xff) != NULL)) {
	    if (interp) {
		Tcl_SetObjResult(interp,
			Tcl_NewStringObj("illegal password", -1));
	    }
	    return TCL_ERROR;
	}
    }
    if (ZipFSOpenArchive(interp, zipname, 1, &zf0) != TCL_OK) {
	return TCL_ERROR;
    }
    /*
     * Mount point can come from Tcl_GetNameOfExecutable()
     * which sometimes is a relative or otherwise denormalized path.
     * But an absolute name is needed as mount point here.
     */
    WriteLock();
    hPtr = Tcl_CreateHashEntry(&ZipFS.zipHash, zipname, &isNew);
    if (!isNew) {
	zf = (ZipFile *) Tcl_GetHashValue(hPtr);
	if (interp != NULL) {
	    Tcl_AppendResult(interp, "already mounted on \"", zf->mntptlen ?
		    zf->mntpt : "/", "\"", (char *) NULL);
	}
	Unlock();
	ZipFSCloseArchive(interp, &zf0);
	return TCL_ERROR;
    }
    if (strcmp(mntpt, "/") == 0) {
	mntpt = "";
    }
    zf = (ZipFile *) Tcl_AttemptAlloc(sizeof (*zf) + strlen(mntpt) + 1);
    if (zf == NULL) {
	if (interp != NULL) {
	    Tcl_AppendResult(interp, "out of memory", (char *) NULL);
	}
	Unlock();
	ZipFSCloseArchive(interp, &zf0);
	return TCL_ERROR;
    }
    *zf = zf0;
    zf->name = Tcl_GetHashKey(&ZipFS.zipHash, hPtr);
    strcpy(zf->mntpt, mntpt);
    zf->mntptlen = strlen(zf->mntpt);
    zf->entries = NULL;
    zf->topents = NULL;
    zf->nopen = 0;
    Tcl_SetHashValue(hPtr, (ClientData) zf);
    if ((zf->pwbuf[0] == 0) && pwlen) {
	int k = 0;
	i = pwlen;
	zf->pwbuf[k++] = i;
	while (i > 0) {
	    zf->pwbuf[k] = (passwd[i - 1] & 0x0f) |
		pwrot[(passwd[i - 1] >> 4) & 0x0f];
	    k++;
	    i--;
	}
	zf->pwbuf[k] = '\0';
    }
    if (mntpt[0] != '\0') {
	z = (ZipEntry *) Tcl_Alloc(sizeof (*z));
	z->name = NULL;
	z->tnext = NULL;
	z->depth = CountSlashes(mntpt);
	z->zipfile = zf;
	z->isdir = 1;
	z->isenc = 0;
	z->offset = zf->baseoffs;
	z->crc32 = 0;
	z->timestamp = 0;
	z->nbyte = z->nbytecompr = 0;
	z->cmeth = ZIP_COMPMETH_STORED;
	z->data = NULL;
	hPtr = Tcl_CreateHashEntry(&ZipFS.fileHash, mntpt, &isNew);
	if (!isNew) {
	    /* skip it */
	    Tcl_Free((char *) z);
	} else {
	    Tcl_SetHashValue(hPtr, (ClientData) z);
	    z->name = Tcl_GetHashKey(&ZipFS.fileHash, hPtr);
	    z->next = zf->entries;
	    zf->entries = z;
	}
    }
    q = zf->data + zf->centoffs;
    Tcl_DStringInit(&fpBuf);
    Tcl_DStringInit(&ds);
    for (i = 0; i < zf->nfiles; i++) {
	int pathlen, comlen, extra, isdir = 0, dosTime, dosDate, nbcompr, offs;
	unsigned char *lq, *gq = NULL;
	char *fullpath, *path;

	pathlen = zip_read_short(q + ZIP_CENTRAL_PATHLEN_OFFS);
	comlen = zip_read_short(q + ZIP_CENTRAL_FCOMMENTLEN_OFFS);
	extra = zip_read_short(q + ZIP_CENTRAL_EXTRALEN_OFFS);
	Tcl_DStringSetLength(&ds, 0);
	Tcl_DStringAppend(&ds, (char *) q + ZIP_CENTRAL_HEADER_LEN, pathlen);
	path = Tcl_DStringValue(&ds);
	if ((pathlen > 0) && (path[pathlen - 1] == '/')) {
	    Tcl_DStringSetLength(&ds, pathlen - 1);
	    path = Tcl_DStringValue(&ds);
	    isdir = 1;
	}
	if ((strcmp(path, ".") == 0) || (strcmp(path, "..") == 0)) {
	    goto nextent;
	}
	lq = zf->data + zf->baseoffs +
	    zip_read_int(q + ZIP_CENTRAL_LOCALHDR_OFFS);
	if ((lq < zf->data) || (lq > (zf->data + zf->length))) {
	    goto nextent;
	}
	nbcompr = zip_read_int(lq + ZIP_LOCAL_COMPLEN_OFFS);
	if (!isdir && (nbcompr == 0) &&
		(zip_read_int(lq + ZIP_LOCAL_UNCOMPLEN_OFFS) == 0) &&
		(zip_read_int(lq + ZIP_LOCAL_CRC32_OFFS) == 0)) {
	    gq = q;
	    nbcompr = zip_read_int(gq + ZIP_CENTRAL_COMPLEN_OFFS);
	}
	offs = (lq - zf->data)
	    + ZIP_LOCAL_HEADER_LEN
	    + zip_read_short(lq + ZIP_LOCAL_PATHLEN_OFFS)
	    + zip_read_short(lq + ZIP_LOCAL_EXTRALEN_OFFS);
	if ((offs + nbcompr) > zf->length) {
	    goto nextent;
	}
	if (!isdir && (mntpt[0] == '\0') && !CountSlashes(path)) {
#ifdef ANDROID
	    /*
	     * When mounting the ZIP archive on the root directory try
	     * to remap top level regular files of the archive to
	     * /assets/.root/... since this directory should not be
	     * in a valid APK due to the leading dot in the file name
	     * component. This trick should make the files
	     * AndroidManifest.xml, resources.arsc, and classes.dex
	     * visible to Tcl.
	     */
	    Tcl_DString ds2;

	    Tcl_DStringInit(&ds2);
	    Tcl_DStringAppend(&ds2, "assets/.root/", -1);
	    Tcl_DStringAppend(&ds2, path, -1);
	    hPtr = Tcl_FindHashEntry(&ZipFS.fileHash, Tcl_DStringValue(&ds2));
	    if (hPtr != NULL) {
		/* should not happen but skip it anyway */
		Tcl_DStringFree(&ds2);
		goto nextent;
	    }
	    Tcl_DStringSetLength(&ds, 0);
	    Tcl_DStringAppend(&ds, Tcl_DStringValue(&ds2),
		    Tcl_DStringLength(&ds2));
	    path = Tcl_DStringValue(&ds);
	    Tcl_DStringFree(&ds2);
#else
	    /*
	     * Regular files skipped when mounting on root.
	     */
	    goto nextent;
#endif
	}
	Tcl_DStringSetLength(&fpBuf, 0);
	fullpath = CanonicalPath(mntpt, path, &fpBuf, 1);
	z = (ZipEntry *) Tcl_Alloc(sizeof (*z));
	z->name = NULL;
	z->tnext = NULL;
	z->depth = CountSlashes(fullpath);
	z->zipfile = zf;
	z->isdir = isdir;
	z->isenc = (zip_read_short(lq + ZIP_LOCAL_FLAGS_OFFS) & 1)
	    && (nbcompr > 12);
	z->offset = offs;
	if (gq != NULL) {
	    z->crc32 = zip_read_int(gq + ZIP_CENTRAL_CRC32_OFFS);
	    dosDate = zip_read_short(gq + ZIP_CENTRAL_MDATE_OFFS);
	    dosTime = zip_read_short(gq + ZIP_CENTRAL_MTIME_OFFS);
	    z->timestamp = DosTimeDate(dosDate, dosTime);
	    z->nbyte = zip_read_int(gq + ZIP_CENTRAL_UNCOMPLEN_OFFS);
	    z->cmeth = zip_read_short(gq + ZIP_CENTRAL_COMPMETH_OFFS);
	} else {
	    z->crc32 = zip_read_int(lq + ZIP_LOCAL_CRC32_OFFS);
	    dosDate = zip_read_short(lq + ZIP_LOCAL_MDATE_OFFS);
	    dosTime = zip_read_short(lq + ZIP_LOCAL_MTIME_OFFS);
	    z->timestamp = DosTimeDate(dosDate, dosTime);
	    z->nbyte = zip_read_int(lq + ZIP_LOCAL_UNCOMPLEN_OFFS);
	    z->cmeth = zip_read_short(lq + ZIP_LOCAL_COMPMETH_OFFS);
	}
	z->nbytecompr = nbcompr;
	z->data = NULL;
	hPtr = Tcl_CreateHashEntry(&ZipFS.fileHash, fullpath, &isNew);
	if (!isNew) {
	    /* should not happen but skip it anyway */
	    Tcl_Free((char *) z);
	} else {
	    Tcl_SetHashValue(hPtr, (ClientData) z);
	    z->name = Tcl_GetHashKey(&ZipFS.fileHash, hPtr);
	    z->next = zf->entries;
	    zf->entries = z;
	    if (isdir && (mntpt[0] == '\0') && (z->depth == 1)) {
		z->tnext = zf->topents;
		zf->topents = z;
	    }
	    if (!z->isdir && (z->depth > 1)) {
		char *dir, *end;
		ZipEntry *zd;

		Tcl_DStringSetLength(&ds, strlen(z->name) + 8);
		Tcl_DStringSetLength(&ds, 0);
		Tcl_DStringAppend(&ds, z->name, -1);
		dir = Tcl_DStringValue(&ds);
		end = strrchr(dir, '/');
		while ((end != NULL) && (end != dir)) {
		    Tcl_DStringSetLength(&ds, end - dir);
		    hPtr = Tcl_FindHashEntry(&ZipFS.fileHash, dir);
		    if (hPtr != NULL) {
			break;
		    }
		    zd = (ZipEntry *) Tcl_Alloc(sizeof (*zd));
		    zd->name = NULL;
		    zd->tnext = NULL;
		    zd->depth = CountSlashes(dir);
		    zd->zipfile = zf;
		    zd->isdir = 1;
		    zd->isenc = 0;
		    zd->offset = z->offset;
		    zd->crc32 = 0;
		    zd->timestamp = z->timestamp;
		    zd->nbyte = zd->nbytecompr = 0;
		    zd->cmeth = ZIP_COMPMETH_STORED;
		    zd->data = NULL;
		    hPtr = Tcl_CreateHashEntry(&ZipFS.fileHash, dir, &isNew);
		    if (!isNew) {
			/* should not happen but skip it anyway */
			Tcl_Free((char *) zd);
		    } else {
			Tcl_SetHashValue(hPtr, (ClientData) zd);
			zd->name = Tcl_GetHashKey(&ZipFS.fileHash, hPtr);
			zd->next = zf->entries;
			zf->entries = zd;
			if ((mntpt[0] == '\0') && (zd->depth == 1)) {
			    zd->tnext = zf->topents;
			    zf->topents = zd;
			}
		    }
		    end = strrchr(dir, '/');
		}
	    }
	}
nextent:
	q += pathlen + comlen + extra + ZIP_CENTRAL_HEADER_LEN;
    }
    Unlock();
    Tcl_DStringFree(&fpBuf);
    Tcl_DStringFree(&ds);
    Tcl_FSMountsChanged(NULL);
    return TCL_OK;
}

/*
 *-------------------------------------------------------------------------
 *
 * TclZipfs_Unmount --
 *
 *      This procedure is invoked to unmount a given ZIP archive.
 *
 * Results:
 *      A standard Tcl result.
 *
 * Side effects:
 *      A mounted ZIP archive file is unmounted, resources are free'd.
 *
 *-------------------------------------------------------------------------
 */

int
TclZipfs_Unmount(Tcl_Interp *interp, const char *zipname)
{
    ZipFile *zf;
    ZipEntry *z, *znext;
    Tcl_HashEntry *hPtr;
    int ret = TCL_OK, unmounted = 0;

    WriteLock();
    if (!ZipFS.initialized) {
	goto done;
    }
    hPtr = Tcl_FindHashEntry(&ZipFS.zipHash, zipname);
    if (hPtr == NULL) {
	/* don't report error */
	goto done;
    }
    zf = (ZipFile *) Tcl_GetHashValue(hPtr);
    if (zf->nopen > 0) {
	if (interp != NULL) {
	    Tcl_SetObjResult(interp,
		    Tcl_NewStringObj("filesystem is busy", -1));
	}
	ret = TCL_ERROR;
	goto done;
    }
    Tcl_DeleteHashEntry(hPtr);
    for (z = zf->entries; z; z = znext) {
	znext = z->next;
	hPtr = Tcl_FindHashEntry(&ZipFS.fileHash, z->name);
	if (hPtr) {
	    Tcl_DeleteHashEntry(hPtr);
	}
	if (z->data != NULL) {
	    Tcl_Free((char *) z->data);
	}
	Tcl_Free((char *) z);
    }
    ZipFSCloseArchive(interp, zf);
    Tcl_Free((char *) zf);
    unmounted = 1;
done:
    Unlock();
    if (unmounted) {
	Tcl_FSMountsChanged(NULL);
    }
    return ret;
}

/*
 *-------------------------------------------------------------------------
 *
 * ZipFSMountObjCmd --
 *
 *      This procedure is invoked to process the "zipfs::mount" command.
 *
 * Results:
 *      A standard Tcl result.
 *
 * Side effects:
 *      A ZIP archive file is mounted, resources are allocated.
 *
 *-------------------------------------------------------------------------
 */

static int
ZipFSMountObjCmd(ClientData clientData, Tcl_Interp *interp,
		 int objc, Tcl_Obj *const objv[])
{
    if (objc > 4) {
	Tcl_WrongNumArgs(interp, 1, objv,
			 "?zipfile? ?mountpoint? ?password?");
	return TCL_ERROR;
    }
    return TclZipfs_Mount(interp, (objc > 1) ? Tcl_GetString(objv[1]) : NULL,
		       (objc > 2) ? Tcl_GetString(objv[2]) : NULL,
		       (objc > 3) ? Tcl_GetString(objv[3]) : NULL);
}

/*
 *-------------------------------------------------------------------------
 *
 * ZipFSUnmountObjCmd --
 *
 *      This procedure is invoked to process the "zipfs::unmount" command.
 *
 * Results:
 *      A standard Tcl result.
 *
 * Side effects:
 *      A mounted ZIP archive file is unmounted, resources are free'd.
 *
 *-------------------------------------------------------------------------
 */

static int
ZipFSUnmountObjCmd(ClientData clientData, Tcl_Interp *interp,
		   int objc, Tcl_Obj *const objv[])
{
    if (objc != 2) {
	Tcl_WrongNumArgs(interp, 1, objv, "zipfile");
	return TCL_ERROR;
    }
    return TclZipfs_Unmount(interp, Tcl_GetString(objv[1]));
}

/*
 *-------------------------------------------------------------------------
 *
 * ZipFSMkKeyObjCmd --
 *
 *      This procedure is invoked to process the "zipfs::mkkey" command.
 *	It produces a rotated password to be embedded into an image file.
 *
 * Results:
 *      A standard Tcl result.
 *
 * Side effects:
 *      None.
 *
 *-------------------------------------------------------------------------
 */

static int
ZipFSMkKeyObjCmd(ClientData clientData, Tcl_Interp *interp,
		 int objc, Tcl_Obj *const objv[])
{
    int len, i = 0;
    char *pw, pwbuf[264];

    if (objc != 2) {
	Tcl_WrongNumArgs(interp, 1, objv, "password");
	return TCL_ERROR;
    }
    pw = Tcl_GetString(objv[1]);
    len = strlen(pw);
    if (len == 0) {
	return TCL_OK;
    }
    if ((len > 255) || (strchr(pw, 0xff) != NULL)) {
	Tcl_SetObjResult(interp,
			 Tcl_NewStringObj("illegal password", -1));
	return TCL_ERROR;
    }
    while (len > 0) {
	int ch = pw[len - 1];

	pwbuf[i] = (ch & 0x0f) | pwrot[(ch >> 4) & 0x0f];
	i++;
	len--;
    }
    pwbuf[i] = i;
    ++i;
    pwbuf[i++] = (char) ZIP_PASSWORD_END_SIG;
    pwbuf[i++] = (char) (ZIP_PASSWORD_END_SIG >> 8);
    pwbuf[i++] = (char) (ZIP_PASSWORD_END_SIG >> 16);
    pwbuf[i++] = (char) (ZIP_PASSWORD_END_SIG >> 24);
    pwbuf[i] = '\0';
    Tcl_AppendResult(interp, pwbuf, (char *) NULL);
    return TCL_OK;
}

/*
 *-------------------------------------------------------------------------
 *
 * ZipAddFile --
 *
 *      This procedure is used by ZipFSMkZipOrImgCmd() to add a single
 *	file to the output ZIP archive file being written. A ZipEntry
 *	struct about the input file is added to the given fileHash table
 *	for later creation of the central ZIP directory.
 *
 * Results:
 *      A standard Tcl result.
 *
 * Side effects:
 *	Input file is read and (compressed and) written to the output
 *	ZIP archive file.
 *
 *-------------------------------------------------------------------------
 */

static int
ZipAddFile(Tcl_Interp *interp, const char *path, const char *name,
	   Tcl_Channel out, const char *passwd,
	   char *buf, int bufsize, Tcl_HashTable *fileHash)
{
    Tcl_Channel in;
    Tcl_HashEntry *hPtr;
    ZipEntry *z;
    z_stream stream;
    const char *zpath;
    int nbyte, nbytecompr, len, crc, flush, pos[3], zpathlen, olen;
    int mtime = 0, isNew, align = 0, cmeth;
    unsigned long keys[3], keys0[3];
    char obuf[4096];

    zpath = name;
    while (zpath != NULL && zpath[0] == '/') {
	zpath++;
    }
    if ((zpath == NULL) || (zpath[0] == '\0')) {
	return TCL_OK;
    }
    zpathlen = strlen(zpath);
    if (zpathlen + ZIP_CENTRAL_HEADER_LEN > bufsize) {
	Tcl_AppendResult(interp, "path too long for \"", path, "\"",
			 (char *) NULL);
	return TCL_ERROR;
    }
    in = Tcl_OpenFileChannel(interp, path, "r", 0);
    if ((in == NULL) ||
	(Tcl_SetChannelOption(interp, in, "-translation", "binary")
	 != TCL_OK) ||
	(Tcl_SetChannelOption(interp, in, "-encoding", "binary")
	 != TCL_OK)) {
#if defined(_WIN32) || defined(_WIN64)
	 /* hopefully a directory */
	 if (strcmp("permission denied", Tcl_PosixError(interp)) == 0) {
	    Tcl_Close(interp, in);
	    return TCL_OK;
	}
#endif
	Tcl_Close(interp, in);
	return TCL_ERROR;
    } else {
	Tcl_Obj *pathObj = Tcl_NewStringObj(path, -1);
	Tcl_StatBuf statBuf;

	Tcl_IncrRefCount(pathObj);
	if (Tcl_FSStat(pathObj, &statBuf) != -1) {
	    mtime = statBuf.st_mtime;
	}
	Tcl_DecrRefCount(pathObj);
    }
    Tcl_ResetResult(interp);
    crc = 0;
    nbyte = nbytecompr = 0;
    while ((len = Tcl_Read(in, buf, bufsize)) > 0) {
	crc = crc32(crc, (unsigned char *) buf, len);
	nbyte += len;
    }
    if (len == -1) {
	if (nbyte == 0) {
	    if (strcmp("illegal operation on a directory",
		       Tcl_PosixError(interp)) == 0) {
		Tcl_Close(interp, in);
		return TCL_OK;
	    }
	}
	Tcl_AppendResult(interp, "read error on \"", path, "\"",
			 (char *) NULL);
	Tcl_Close(interp, in);
	return TCL_ERROR;
    }
    if (Tcl_Seek(in, 0, SEEK_SET) == -1) {
	Tcl_AppendResult(interp, "seek error on \"", path, "\"",
			 (char *) NULL);
	Tcl_Close(interp, in);
	return TCL_ERROR;
    }
    pos[0] = Tcl_Tell(out);
    memset(buf, '\0', ZIP_LOCAL_HEADER_LEN);
    memcpy(buf + ZIP_LOCAL_HEADER_LEN, zpath, zpathlen);
    len = zpathlen + ZIP_LOCAL_HEADER_LEN;
    if (Tcl_Write(out, buf, len) != len) {
wrerr:
	Tcl_AppendResult(interp, "write error", (char *) NULL);
	Tcl_Close(interp, in);
	return TCL_ERROR;
    }
    if ((len + pos[0]) & 3) {
	char abuf[8];

	/*
	 * Align payload to next 4-byte boundary using a dummy extra
	 * entry similar to the zipalign tool from Android's SDK.
	 */
	align = 4 + ((len + pos[0]) & 3);
	zip_write_short(abuf, 0xffff);
	zip_write_short(abuf + 2, align - 4);
	zip_write_int(abuf + 4, 0x03020100);
	if (Tcl_Write(out, abuf, align) != align) {
	    goto wrerr;
	}
    }
    if (passwd != NULL) {
	int i, ch, tmp;
	unsigned char kvbuf[24];
	Tcl_Obj *ret;

	init_keys(passwd, keys, crc32tab);
	for (i = 0; i < 12 - 2; i++) {
	    if (Tcl_EvalEx(interp, "expr int(rand() * 256) % 256", -1, 0) != TCL_OK) {
		Tcl_AppendResult(interp, "PRNG error", (char *) NULL);
		Tcl_Close(interp, in);
		return TCL_ERROR;
	    }
	    ret = Tcl_GetObjResult(interp);
	    if (Tcl_GetIntFromObj(interp, ret, &ch) != TCL_OK) {
		Tcl_Close(interp, in);
		return TCL_ERROR;
	    }
	    kvbuf[i + 12] = (unsigned char) zencode(keys, crc32tab, ch, tmp);
	}
	Tcl_ResetResult(interp);
	init_keys(passwd, keys, crc32tab);
	for (i = 0; i < 12 - 2; i++) {
	    kvbuf[i] = (unsigned char) zencode(keys, crc32tab,
					       kvbuf[i + 12], tmp);
	}
	kvbuf[i++] = (unsigned char) zencode(keys, crc32tab, crc >> 16, tmp);
	kvbuf[i++] = (unsigned char) zencode(keys, crc32tab, crc >> 24, tmp);
	len = Tcl_Write(out, (char *) kvbuf, 12);
	memset(kvbuf, 0, 24);
	if (len != 12) {
	    Tcl_AppendResult(interp, "write error", (char *) NULL);
	    Tcl_Close(interp, in);
	    return TCL_ERROR;
	}
	memcpy(keys0, keys, sizeof (keys0));
	nbytecompr += 12;
    }
    Tcl_Flush(out);
    pos[2] = Tcl_Tell(out);
    cmeth = ZIP_COMPMETH_DEFLATED;
    memset(&stream, 0, sizeof (stream));
    stream.zalloc = Z_NULL;
    stream.zfree = Z_NULL;
    stream.opaque = Z_NULL;
    if (deflateInit2(&stream, 9, Z_DEFLATED, -15, 8, Z_DEFAULT_STRATEGY)
	!= Z_OK) {
	Tcl_AppendResult(interp, "compression init error on \"", path, "\"",
			 (char *) NULL);
	Tcl_Close(interp, in);
	return TCL_ERROR;
    }
    do {
	len = Tcl_Read(in, buf, bufsize);
	if (len == -1) {
	    Tcl_AppendResult(interp, "read error on \"", path, "\"",
			     (char *) NULL);
	    deflateEnd(&stream);
	    Tcl_Close(interp, in);
	    return TCL_ERROR;
	}
	stream.avail_in = len;
	stream.next_in = (unsigned char *) buf;
	flush = Tcl_Eof(in) ? Z_FINISH : Z_NO_FLUSH;
	do {
	    stream.avail_out = sizeof (obuf);
	    stream.next_out = (unsigned char *) obuf;
	    len = deflate(&stream, flush);
	    if (len == Z_STREAM_ERROR) {
		Tcl_AppendResult(interp, "deflate error on \"", path, "\"",
				 (char *) NULL);
		deflateEnd(&stream);
		Tcl_Close(interp, in);
		return TCL_ERROR;
	    }
	    olen = sizeof (obuf) - stream.avail_out;
	    if (passwd != NULL) {
		int i, tmp;

		for (i = 0; i < olen; i++) {
		    obuf[i] = (char) zencode(keys, crc32tab, obuf[i], tmp);
		}
	    }
	    if (olen && (Tcl_Write(out, obuf, olen) != olen)) {
		Tcl_AppendResult(interp, "write error", (char *) NULL);
		deflateEnd(&stream);
		Tcl_Close(interp, in);
		return TCL_ERROR;
	    }
	    nbytecompr += olen;
	} while (stream.avail_out == 0);
    } while (flush != Z_FINISH);
    deflateEnd(&stream);
    Tcl_Flush(out);
    pos[1] = Tcl_Tell(out);
    if (nbyte - nbytecompr <= 0) {
	/*
	 * Compressed file larger than input,
	 * write it again uncompressed.
	 */
	if ((int) Tcl_Seek(in, 0, SEEK_SET) != 0) {
	    goto seekErr;
	}
	if ((int) Tcl_Seek(out, pos[2], SEEK_SET) != pos[2]) {
seekErr:
	    Tcl_Close(interp, in);
	    Tcl_AppendResult(interp, "seek error", (char *) NULL);
	    return TCL_ERROR;
	}
	nbytecompr = (passwd != NULL) ? 12 : 0;
	while (1) {
	    len = Tcl_Read(in, buf, bufsize);
	    if (len == -1) {
		Tcl_AppendResult(interp, "read error on \"", path, "\"",
				 (char *) NULL);
		Tcl_Close(interp, in);
		return TCL_ERROR;
	    } else if (len == 0) {
		break;
	    }
	    if (passwd != NULL) {
		int i, tmp;

		for (i = 0; i < len; i++) {
		    buf[i] = (char) zencode(keys0, crc32tab, buf[i], tmp);
		}
	    }
	    if (Tcl_Write(out, buf, len) != len) {
		Tcl_AppendResult(interp, "write error", (char *) NULL);
		Tcl_Close(interp, in);
		return TCL_ERROR;
	    }
	    nbytecompr += len;
	}
	cmeth = ZIP_COMPMETH_STORED;
	Tcl_Flush(out);
	pos[1] = Tcl_Tell(out);
	Tcl_TruncateChannel(out, pos[1]);
    }
    Tcl_Close(interp, in);

    z = (ZipEntry *) Tcl_Alloc(sizeof (*z));
    z->name = NULL;
    z->tnext = NULL;
    z->depth = 0;
    z->zipfile = NULL;
    z->isdir = 0;
    z->isenc = (passwd != NULL) ? 1 : 0;
    z->offset = pos[0];
    z->crc32 = crc;
    z->timestamp = mtime;
    z->nbyte = nbyte;
    z->nbytecompr = nbytecompr;
    z->cmeth = cmeth;
    z->data = NULL;
    hPtr = Tcl_CreateHashEntry(fileHash, zpath, &isNew);
    if (!isNew) {
	Tcl_AppendResult(interp, "non-unique path name \"", path, "\"",
			 (char *) NULL);
	Tcl_Free((char *) z);
	return TCL_ERROR;
    } else {
	Tcl_SetHashValue(hPtr, (ClientData) z);
	z->name = Tcl_GetHashKey(fileHash, hPtr);
	z->next = NULL;
    }

    /*
     * Write final local header information.
     */
    zip_write_int(buf + ZIP_LOCAL_SIG_OFFS, ZIP_LOCAL_HEADER_SIG);
    zip_write_short(buf + ZIP_LOCAL_VERSION_OFFS, ZIP_MIN_VERSION);
    zip_write_short(buf + ZIP_LOCAL_FLAGS_OFFS, z->isenc);
    zip_write_short(buf + ZIP_LOCAL_COMPMETH_OFFS, z->cmeth);
    zip_write_short(buf + ZIP_LOCAL_MTIME_OFFS, ToDosTime(z->timestamp));
    zip_write_short(buf + ZIP_LOCAL_MDATE_OFFS, ToDosDate(z->timestamp));
    zip_write_int(buf + ZIP_LOCAL_CRC32_OFFS, z->crc32);
    zip_write_int(buf + ZIP_LOCAL_COMPLEN_OFFS, z->nbytecompr);
    zip_write_int(buf + ZIP_LOCAL_UNCOMPLEN_OFFS, z->nbyte);
    zip_write_short(buf + ZIP_LOCAL_PATHLEN_OFFS, zpathlen);
    zip_write_short(buf + ZIP_LOCAL_EXTRALEN_OFFS, align);
    if ((int) Tcl_Seek(out, pos[0], SEEK_SET) != pos[0]) {
	Tcl_DeleteHashEntry(hPtr);
	Tcl_Free((char *) z);
	Tcl_AppendResult(interp, "seek error", (char *) NULL);
	return TCL_ERROR;
    }
    if (Tcl_Write(out, buf, ZIP_LOCAL_HEADER_LEN) != ZIP_LOCAL_HEADER_LEN) {
	Tcl_DeleteHashEntry(hPtr);
	Tcl_Free((char *) z);
	Tcl_AppendResult(interp, "write error", (char *) NULL);
	return TCL_ERROR;
    }
    Tcl_Flush(out);
    if ((int) Tcl_Seek(out, pos[1], SEEK_SET) != pos[1]) {
	Tcl_DeleteHashEntry(hPtr);
	Tcl_Free((char *) z);
	Tcl_AppendResult(interp, "seek error", (char *) NULL);
	return TCL_ERROR;
    }
    return TCL_OK;
}

/*
 *-------------------------------------------------------------------------
 *
 * ZipFSMkZipOrImgObjCmd --
 *
 *      This procedure is creates a new ZIP archive file or image file
 *	given output filename, input directory of files to be archived,
 *	optional password, and optional image to be prepended to the
 *	output ZIP archive file.
 *
 * Results:
 *      A standard Tcl result.
 *
 * Side effects:
 *	A new ZIP archive file or image file is written.
 *
 *-------------------------------------------------------------------------
 */

static int
ZipFSMkZipOrImgObjCmd(ClientData clientData, Tcl_Interp *interp,
		      int isImg, int isList, int objc, Tcl_Obj *const objv[])
{
    Tcl_Channel out;
    int len = 0, pwlen = 0, slen = 0, i, count, ret = TCL_ERROR, lobjc, pos[3];
    Tcl_Obj **lobjv, *list = NULL;
    ZipEntry *z;
    Tcl_HashEntry *hPtr;
    Tcl_HashSearch search;
    Tcl_HashTable fileHash;
    char *strip = NULL, *pw = NULL, pwbuf[264], buf[4096];

    if (isList) {
	if ((objc < 3) || (objc > (isImg ? 5 : 4))) {
	    Tcl_WrongNumArgs(interp, 1, objv, isImg ?
			     "outfile inlist ?password infile?" :
			     "outfile inlist ?password?");
	    return TCL_ERROR;
	}
    } else {
	if ((objc < 3) || (objc > (isImg ? 6 : 5))) {
	    Tcl_WrongNumArgs(interp, 1, objv, isImg ?
			     "outfile indir ?strip? ?password? ?infile?" :
			     "outfile indir ?strip? ?password?");
	    return TCL_ERROR;
	}
    }
    pwbuf[0] = 0;
    if (objc > (isList ? 3 : 4)) {
	pw = Tcl_GetString(objv[isList ? 3 : 4]);
	pwlen = strlen(pw);
	if ((pwlen > 255) || (strchr(pw, 0xff) != NULL)) {
	    Tcl_SetObjResult(interp,
			     Tcl_NewStringObj("illegal password", -1));
	    return TCL_ERROR;
	}
    }
    if (isList) {
	list = objv[2];
	Tcl_IncrRefCount(list);
    } else {
	Tcl_Obj *cmd[3];

	cmd[1] = Tcl_NewStringObj("::zipfs::find", -1);
	cmd[2] = objv[2];
	cmd[0] = Tcl_NewListObj(2, cmd + 1);
	Tcl_IncrRefCount(cmd[0]);
	if (Tcl_EvalObjEx(interp, cmd[0], TCL_EVAL_DIRECT) != TCL_OK) {
	    Tcl_DecrRefCount(cmd[0]);
	    return TCL_ERROR;
	}
	Tcl_DecrRefCount(cmd[0]);
	list = Tcl_GetObjResult(interp);
	Tcl_IncrRefCount(list);
    }
    if (Tcl_ListObjGetElements(interp, list, &lobjc, &lobjv) != TCL_OK) {
	Tcl_DecrRefCount(list);
	return TCL_ERROR;
    }
    if (isList && (lobjc % 2)) {
	Tcl_DecrRefCount(list);
	Tcl_SetObjResult(interp,
		Tcl_NewStringObj("need even number of elements", -1));
	return TCL_ERROR;
    }
    if (lobjc == 0) {
	Tcl_DecrRefCount(list);
	Tcl_SetObjResult(interp, Tcl_NewStringObj("empty archive", -1));
	return TCL_ERROR;
    }
    out = Tcl_OpenFileChannel(interp, Tcl_GetString(objv[1]), "w", 0755);
    if ((out == NULL) ||
	(Tcl_SetChannelOption(interp, out, "-translation", "binary")
	 != TCL_OK) ||
	(Tcl_SetChannelOption(interp, out, "-encoding", "binary")
	 != TCL_OK)) {
	Tcl_DecrRefCount(list);
	Tcl_Close(interp, out);
	return TCL_ERROR;
    }
    if (isImg) {
	ZipFile zf0;
	const char *imgName;

	if (isList) {
	    imgName = (objc > 4) ? Tcl_GetString(objv[4]) :
		Tcl_GetNameOfExecutable();
	} else {
	    imgName = (objc > 5) ? Tcl_GetString(objv[5]) :
		Tcl_GetNameOfExecutable();
	}
	if (ZipFSOpenArchive(interp, imgName, 0, &zf0) != TCL_OK) {
	    Tcl_DecrRefCount(list);
	    Tcl_Close(interp, out);
	    return TCL_ERROR;
	}
	if ((pw != NULL) && pwlen) {
	    i = 0;
	    len = pwlen;
	    while (len > 0) {
		int ch = pw[len - 1];

		pwbuf[i] = (ch & 0x0f) | pwrot[(ch >> 4) & 0x0f];
		i++;
		len--;
	    }
	    pwbuf[i] = i;
	    ++i;
	    pwbuf[i++] = (char) ZIP_PASSWORD_END_SIG;
	    pwbuf[i++] = (char) (ZIP_PASSWORD_END_SIG >> 8);
	    pwbuf[i++] = (char) (ZIP_PASSWORD_END_SIG >> 16);
	    pwbuf[i++] = (char) (ZIP_PASSWORD_END_SIG >> 24);
	    pwbuf[i] = '\0';
	}
	i = Tcl_Write(out, (char *) zf0.data, zf0.baseoffsp);
	if (i != zf0.baseoffsp) {
	    Tcl_DecrRefCount(list);
	    Tcl_SetObjResult(interp, Tcl_NewStringObj("write error", -1));
	    Tcl_Close(interp, out);
	    ZipFSCloseArchive(interp, &zf0);
	    return TCL_ERROR;
	}
	ZipFSCloseArchive(interp, &zf0);
	len = strlen(pwbuf);
	if (len > 0) {
	    i = Tcl_Write(out, pwbuf, len);
	    if (i != len) {
		Tcl_DecrRefCount(list);
		Tcl_SetObjResult(interp, Tcl_NewStringObj("write error", -1));
		Tcl_Close(interp, out);
		return TCL_ERROR;
	    }
	}
	memset(pwbuf, 0, sizeof (pwbuf));
	Tcl_Flush(out);
    }
    Tcl_InitHashTable(&fileHash, TCL_STRING_KEYS);
    pos[0] = Tcl_Tell(out);
    if (!isList && (objc > 3)) {
	strip = Tcl_GetString(objv[3]);
	slen = strlen(strip);
    }
    for (i = 0; i < lobjc; i += (isList ? 2 : 1)) {
	const char *path, *name;

	path = Tcl_GetString(lobjv[i]);
	if (isList) {
	    name = Tcl_GetString(lobjv[i + 1]);
	} else {
	    name = path;
	    if (slen > 0) {
		len = strlen(name);
		if ((len <= slen) || (strncmp(strip, name, slen) != 0)) {
		    continue;
		}
		name += slen;
	    }
	}
	while (name[0] == '/') {
	    ++name;
	}
	if (name[0] == '\0') {
	    continue;
	}
	if (ZipAddFile(interp, path, name, out, pw, buf, sizeof (buf),
		       &fileHash) != TCL_OK) {
	    goto done;
	}
    }
    pos[1] = Tcl_Tell(out);
    count = 0;
    for (i = 0; i < lobjc; i += (isList ? 2 : 1)) {
	const char *path, *name;

	path = Tcl_GetString(lobjv[i]);
	if (isList) {
	    name = Tcl_GetString(lobjv[i + 1]);
	} else {
	    name = path;
	    if (slen > 0) {
		len = strlen(name);
		if ((len <= slen) || (strncmp(strip, name, slen) != 0)) {
		    continue;
		}
		name += slen;
	    }
	}
	while (name[0] == '/') {
	    ++name;
	}
	if (name[0] == '\0') {
	    continue;
	}
	hPtr = Tcl_FindHashEntry(&fileHash, name);
	if (hPtr == NULL) {
	    continue;
	}
	z = (ZipEntry *) Tcl_GetHashValue(hPtr);
	len = strlen(z->name);
	zip_write_int(buf + ZIP_CENTRAL_SIG_OFFS, ZIP_CENTRAL_HEADER_SIG);
	zip_write_short(buf + ZIP_CENTRAL_VERSIONMADE_OFFS, ZIP_MIN_VERSION);
	zip_write_short(buf + ZIP_CENTRAL_VERSION_OFFS, ZIP_MIN_VERSION);
	zip_write_short(buf + ZIP_CENTRAL_FLAGS_OFFS, z->isenc ? 1 : 0);
	zip_write_short(buf + ZIP_CENTRAL_COMPMETH_OFFS, z->cmeth);
	zip_write_short(buf + ZIP_CENTRAL_MTIME_OFFS, ToDosTime(z->timestamp));
	zip_write_short(buf + ZIP_CENTRAL_MDATE_OFFS, ToDosDate(z->timestamp));
	zip_write_int(buf + ZIP_CENTRAL_CRC32_OFFS, z->crc32);
	zip_write_int(buf + ZIP_CENTRAL_COMPLEN_OFFS, z->nbytecompr);
	zip_write_int(buf + ZIP_CENTRAL_UNCOMPLEN_OFFS, z->nbyte);
	zip_write_short(buf + ZIP_CENTRAL_PATHLEN_OFFS, len);
	zip_write_short(buf + ZIP_CENTRAL_EXTRALEN_OFFS, 0);
	zip_write_short(buf + ZIP_CENTRAL_FCOMMENTLEN_OFFS, 0);
	zip_write_short(buf + ZIP_CENTRAL_DISKFILE_OFFS, 0);
	zip_write_short(buf + ZIP_CENTRAL_IATTR_OFFS, 0);
	zip_write_int(buf + ZIP_CENTRAL_EATTR_OFFS, 0);
	zip_write_int(buf + ZIP_CENTRAL_LOCALHDR_OFFS, z->offset - pos[0]);
	if ((Tcl_Write(out, buf, ZIP_CENTRAL_HEADER_LEN) !=
	     ZIP_CENTRAL_HEADER_LEN) ||
	    (Tcl_Write(out, z->name, len) != len)) {
	    Tcl_SetObjResult(interp, Tcl_NewStringObj("write error", -1));
	    goto done;
	}
	count++;
    }
    Tcl_Flush(out);
    pos[2] = Tcl_Tell(out);
    zip_write_int(buf + ZIP_CENTRAL_END_SIG_OFFS, ZIP_CENTRAL_END_SIG);
    zip_write_short(buf + ZIP_CENTRAL_DISKNO_OFFS, 0);
    zip_write_short(buf + ZIP_CENTRAL_DISKDIR_OFFS, 0);
    zip_write_short(buf + ZIP_CENTRAL_ENTS_OFFS, count);
    zip_write_short(buf + ZIP_CENTRAL_TOTALENTS_OFFS, count);
    zip_write_int(buf + ZIP_CENTRAL_DIRSIZE_OFFS, pos[2] - pos[1]);
    zip_write_int(buf + ZIP_CENTRAL_DIRSTART_OFFS, pos[1] - pos[0]);
    zip_write_short(buf + ZIP_CENTRAL_COMMENTLEN_OFFS, 0);
    if (Tcl_Write(out, buf, ZIP_CENTRAL_END_LEN) != ZIP_CENTRAL_END_LEN) {
	Tcl_SetObjResult(interp, Tcl_NewStringObj("write error", -1));
	goto done;
    }
    Tcl_Flush(out);
    ret = TCL_OK;
done:
    if (ret == TCL_OK) {
	ret = Tcl_Close(interp, out);
    } else {
	Tcl_Close(interp, out);
    }
    Tcl_DecrRefCount(list);
    hPtr = Tcl_FirstHashEntry(&fileHash, &search);
    while (hPtr != NULL) {
	z = (ZipEntry *) Tcl_GetHashValue(hPtr);
	Tcl_Free((char *) z);
	Tcl_DeleteHashEntry(hPtr);
	hPtr = Tcl_FirstHashEntry(&fileHash, &search);
    }
    Tcl_DeleteHashTable(&fileHash);
    return ret;
}

/*
 *-------------------------------------------------------------------------
 *
 * ZipFSMkZipObjCmd --
 *
 *      This procedure is invoked to process the "zipfs::mkzip" command.
 *	See description of ZipFSMkZipOrImgCmd().
 *
 * Results:
 *      A standard Tcl result.
 *
 * Side effects:
 *	See description of ZipFSMkZipOrImgCmd().
 *
 *-------------------------------------------------------------------------
 */

static int
ZipFSMkZipObjCmd(ClientData clientData, Tcl_Interp *interp,
		 int objc, Tcl_Obj *const objv[])
{
    return ZipFSMkZipOrImgObjCmd(clientData, interp, 0, 0, objc, objv);
}

static int
ZipFSLMkZipObjCmd(ClientData clientData, Tcl_Interp *interp,
		  int objc, Tcl_Obj *const objv[])
{
    return ZipFSMkZipOrImgObjCmd(clientData, interp, 0, 1, objc, objv);
}

/*
 *-------------------------------------------------------------------------
 *
 * ZipFSMkImgObjCmd --
 *
 *      This procedure is invoked to process the "zipfs::mkimg" command.
 *	See description of ZipFSMkZipOrImgCmd().
 *
 * Results:
 *      A standard Tcl result.
 *
 * Side effects:
 *	See description of ZipFSMkZipOrImgCmd().
 *
 *-------------------------------------------------------------------------
 */

static int
ZipFSMkImgObjCmd(ClientData clientData, Tcl_Interp *interp,
		 int objc, Tcl_Obj *const objv[])
{
    return ZipFSMkZipOrImgObjCmd(clientData, interp, 1, 0, objc, objv);
}

static int
ZipFSLMkImgObjCmd(ClientData clientData, Tcl_Interp *interp,
		  int objc, Tcl_Obj *const objv[])
{
    return ZipFSMkZipOrImgObjCmd(clientData, interp, 1, 1, objc, objv);
}

/*
 *-------------------------------------------------------------------------
 *
 * ZipFSExistsObjCmd --
 *
 *      This procedure is invoked to process the "zipfs::exists" command.
 *	It tests for the existence of a file in the ZIP filesystem and
 *	places a boolean into the interp's result.
 *
 * Results:
 *      Always TCL_OK.
 *
 * Side effects:
 *      None.
 *
 *-------------------------------------------------------------------------
 */

static int
ZipFSCanonicalObjCmd(ClientData clientData, Tcl_Interp *interp,
		  int objc, Tcl_Obj *const objv[])
{
    char *mntpoint=NULL;
    char *filename=NULL;
    char *result;
    Tcl_DString dPath;

    if (objc != 2 && objc != 3 && objc!=4) {
	Tcl_WrongNumArgs(interp, 1, objv, "?mntpnt? filename ?ZIPFS?");
	return TCL_ERROR;
    }
    Tcl_DStringInit(&dPath);
    if(objc==2) {
	filename = Tcl_GetString(objv[1]);
	result=CanonicalPath("",filename,&dPath,1);
    } else if (objc==3) {
	mntpoint = Tcl_GetString(objv[1]);
	filename = Tcl_GetString(objv[2]);
	result=CanonicalPath(mntpoint,filename,&dPath,1);
    } else {
	int zipfs=0;
	if(Tcl_GetBooleanFromObj(interp,objv[3],&zipfs)) {
	    return TCL_ERROR;
	}
	mntpoint = Tcl_GetString(objv[1]);
	filename = Tcl_GetString(objv[2]);
	result=CanonicalPath(mntpoint,filename,&dPath,zipfs);
    }
    Tcl_SetObjResult(interp,Tcl_NewStringObj(result,-1));
    return TCL_OK;
}

/*
 *-------------------------------------------------------------------------
 *
 * ZipFSExistsObjCmd --
 *
 *      This procedure is invoked to process the "zipfs::exists" command.
 *	It tests for the existence of a file in the ZIP filesystem and
 *	places a boolean into the interp's result.
 *
 * Results:
 *      Always TCL_OK.
 *
 * Side effects:
 *      None.
 *
 *-------------------------------------------------------------------------
 */

static int
ZipFSExistsObjCmd(ClientData clientData, Tcl_Interp *interp,
		  int objc, Tcl_Obj *const objv[])
{
    char *filename;
    int exists;
    Tcl_DString ds;

    if (objc != 2) {
      Tcl_WrongNumArgs(interp, 1, objv, "filename");
      return TCL_ERROR;
    }

    /* prepend ZIPFS_VOLUME to filename, eliding the final / */
    filename = Tcl_GetStringFromObj(objv[1], 0);
    Tcl_DStringInit(&ds);
    Tcl_DStringAppend(&ds, ZIPFS_VOLUME, ZIPFS_VOLUME_LEN-1);
    Tcl_DStringAppend(&ds, filename, -1);
    filename = Tcl_DStringValue(&ds);

    ReadLock();
    exists = ZipFSLookup(filename) != NULL;
    Unlock();

    Tcl_SetObjResult(interp,Tcl_NewBooleanObj(exists));
    return TCL_OK;
}

/*
 *-------------------------------------------------------------------------
 *
 * ZipFSInfoObjCmd --
 *
 *      This procedure is invoked to process the "zipfs::info" command.
 *	On success, it returns a Tcl list made up of name of ZIP archive
 *	file, size uncompressed, size compressed, and archive offset of
 *	a file in the ZIP filesystem.
 *
 * Results:
 *      A standard Tcl result.
 *
 * Side effects:
 *      None.
 *
 *-------------------------------------------------------------------------
 */

static int
ZipFSInfoObjCmd(ClientData clientData, Tcl_Interp *interp,
		int objc, Tcl_Obj *const objv[])
{
    char *filename;
    ZipEntry *z;

    if (objc != 2) {
	Tcl_WrongNumArgs(interp, 1, objv, "filename");
	return TCL_ERROR;
    }
    filename = Tcl_GetStringFromObj(objv[1], 0);
    ReadLock();
    z = ZipFSLookup(filename);
    if (z != NULL) {
	Tcl_Obj *result = Tcl_GetObjResult(interp);

	Tcl_ListObjAppendElement(interp, result,
				 Tcl_NewStringObj(z->zipfile->name, -1));
	Tcl_ListObjAppendElement(interp, result, Tcl_NewIntObj(z->nbyte));
	Tcl_ListObjAppendElement(interp, result, Tcl_NewIntObj(z->nbytecompr));
	Tcl_ListObjAppendElement(interp, result, Tcl_NewIntObj(z->offset));
    }
    Unlock();
    return TCL_OK;
}

/*
 *-------------------------------------------------------------------------
 *
 * ZipFSListObjCmd --
 *
 *      This procedure is invoked to process the "zipfs::list" command.
 *	On success, it returns a Tcl list of files of the ZIP filesystem
 *	which match a search pattern (glob or regexp).
 *
 * Results:
 *      A standard Tcl result.
 *
 * Side effects:
 *      None.
 *
 *-------------------------------------------------------------------------
 */

static int
ZipFSListObjCmd(ClientData clientData, Tcl_Interp *interp,
		int objc, Tcl_Obj *const objv[])
{
    char *pattern = NULL;
    Tcl_RegExp regexp = NULL;
    Tcl_HashEntry *hPtr;
    Tcl_HashSearch search;
    Tcl_Obj *result = Tcl_GetObjResult(interp);

    if (objc > 3) {
	Tcl_WrongNumArgs(interp, 1, objv, "?(-glob|-regexp)? ?pattern?");
	return TCL_ERROR;
    }
    if (objc == 3) {
	int n;
	char *what = Tcl_GetStringFromObj(objv[1], &n);

	if ((n >= 2) && (strncmp(what, "-glob", n) == 0)) {
	    pattern = Tcl_GetString(objv[2]);
	} else if ((n >= 2) && (strncmp(what, "-regexp", n) == 0)) {
	    regexp = Tcl_RegExpCompile(interp, Tcl_GetString(objv[2]));
	    if (regexp == NULL) {
		return TCL_ERROR;
	    }
	} else {
	    Tcl_AppendResult(interp, "unknown option \"", what,
			     "\"", (char *) NULL);
	    return TCL_ERROR;
	}
    } else if (objc == 2) {
	pattern = Tcl_GetStringFromObj(objv[1], 0);
    }
    ReadLock();
    if (pattern != NULL) {
	for (hPtr = Tcl_FirstHashEntry(&ZipFS.fileHash, &search);
	     hPtr != NULL; hPtr = Tcl_NextHashEntry(&search)) {
	    ZipEntry *z = (ZipEntry *) Tcl_GetHashValue(hPtr);

	    if (Tcl_StringMatch(z->name, pattern)) {
		Tcl_ListObjAppendElement(interp, result,
					 Tcl_NewStringObj(z->name, -1));
	    }
	}
    } else if (regexp != NULL) {
	for (hPtr = Tcl_FirstHashEntry(&ZipFS.fileHash, &search);
	     hPtr != NULL; hPtr = Tcl_NextHashEntry(&search)) {
	    ZipEntry *z = (ZipEntry *) Tcl_GetHashValue(hPtr);

	    if (Tcl_RegExpExec(interp, regexp, z->name, z->name)) {
		Tcl_ListObjAppendElement(interp, result,
					 Tcl_NewStringObj(z->name, -1));
	    }
	}
    } else {
	for (hPtr = Tcl_FirstHashEntry(&ZipFS.fileHash, &search);
	     hPtr != NULL; hPtr = Tcl_NextHashEntry(&search)) {
	    ZipEntry *z = (ZipEntry *) Tcl_GetHashValue(hPtr);

	    Tcl_ListObjAppendElement(interp, result,
				     Tcl_NewStringObj(z->name, -1));
	}
    }
    Unlock();
    return TCL_OK;
}

/*
 *-------------------------------------------------------------------------
 *
 * ZipChannelClose --
 *
 *	This function is called to close a channel.
 *
 * Results:
 *	Always TCL_OK.
 *
 * Side effects:
 *	Resources are free'd.
 *
 *-------------------------------------------------------------------------
 */

static int
ZipChannelClose(ClientData instanceData, Tcl_Interp *interp)
{
    ZipChannel *info = (ZipChannel *) instanceData;

    if (info->iscompr && (info->ubuf != NULL)) {
	Tcl_Free((char *) info->ubuf);
	info->ubuf = NULL;
    }
    if (info->isenc) {
	info->isenc = 0;
	memset(info->keys, 0, sizeof (info->keys));
    }
    if (info->iswr) {
	ZipEntry *z = info->zipentry;
	unsigned char *newdata;

	newdata = (unsigned char *)
	    Tcl_AttemptRealloc((char *) info->ubuf, info->nread);
	if (newdata != NULL) {
	    if (z->data != NULL) {
		Tcl_Free((char *) z->data);
	    }
	    z->data = newdata;
	    z->nbyte = z->nbytecompr = info->nbyte;
	    z->cmeth = ZIP_COMPMETH_STORED;
	    z->timestamp = time(NULL);
	    z->isdir = 0;
	    z->isenc = 0;
	    z->offset = 0;
	    z->crc32 = 0;
	} else {
	    Tcl_Free((char *) info->ubuf);
	}
    }
    WriteLock();
    info->zipfile->nopen--;
    Unlock();
    Tcl_Free((char *) info);
    return TCL_OK;
}

/*
 *-------------------------------------------------------------------------
 *
 * ZipChannelRead --
 *
 *	This function is called to read data from channel.
 *
 * Results:
 *	Number of bytes read or -1 on error with error number set.
 *
 * Side effects:
 *	Data is read and file pointer is advanced.
 *
 *-------------------------------------------------------------------------
 */

static int
ZipChannelRead(ClientData instanceData, char *buf, int toRead, int *errloc)
{
    ZipChannel *info = (ZipChannel *) instanceData;
    unsigned long nextpos;

    if (info->isdir) {
	*errloc = EISDIR;
	return -1;
    }
    nextpos = info->nread + toRead;
    if (nextpos > info->nbyte) {
	toRead = info->nbyte - info->nread;
	nextpos = info->nbyte;
    }
    if (toRead == 0) {
	return 0;
    }
    if (info->isenc) {
	int i, ch;

	for (i = 0; i < toRead; i++) {
	    ch = info->ubuf[i + info->nread];
	    buf[i] = zdecode(info->keys, crc32tab, ch);
	}
    } else {
	memcpy(buf, info->ubuf + info->nread, toRead);
    }
    info->nread = nextpos;
    *errloc = 0;
    return toRead;
}

/*
 *-------------------------------------------------------------------------
 *
 * ZipChannelWrite --
 *
 *	This function is called to write data into channel.
 *
 * Results:
 *	Number of bytes written or -1 on error with error number set.
 *
 * Side effects:
 *	Data is written and file pointer is advanced.
 *
 *-------------------------------------------------------------------------
 */

static int
ZipChannelWrite(ClientData instanceData, const char *buf,
		int toWrite, int *errloc)
{
    ZipChannel *info = (ZipChannel *) instanceData;
    unsigned long nextpos;

    if (!info->iswr) {
	*errloc = EINVAL;
	return -1;
    }
    nextpos = info->nread + toWrite;
    if (nextpos > info->nmax) {
	toWrite = info->nmax - info->nread;
	nextpos = info->nmax;
    }
    if (toWrite == 0) {
	return 0;
    }
    memcpy(info->ubuf + info->nread, buf, toWrite);
    info->nread = nextpos;
    if (info->nread > info->nbyte) {
	info->nbyte = info->nread;
    }
    *errloc = 0;
    return toWrite;
}

/*
 *-------------------------------------------------------------------------
 *
 * ZipChannelSeek --
 *
 *	This function is called to position file pointer of channel.
 *
 * Results:
 *	New file position or -1 on error with error number set.
 *
 * Side effects:
 *	File pointer is repositioned according to offset and mode.
 *
 *-------------------------------------------------------------------------
 */

static int
ZipChannelSeek(ClientData instanceData, long offset, int mode, int *errloc)
{
    ZipChannel *info = (ZipChannel *) instanceData;

    if (info->isdir) {
	*errloc = EINVAL;
	return -1;
    }
    switch (mode) {
    case SEEK_CUR:
	offset += info->nread;
	break;
    case SEEK_END:
	offset += info->nbyte;
	break;
    case SEEK_SET:
	break;
    default:
	*errloc = EINVAL;
	return -1;
    }
    if (offset < 0) {
	*errloc = EINVAL;
	return -1;
    }
    if (info->iswr) {
	if ((unsigned long) offset > info->nmax) {
	    *errloc = EINVAL;
	    return -1;
	}
	if ((unsigned long) offset > info->nbyte) {
	    info->nbyte = offset;
	}
    } else if ((unsigned long) offset > info->nbyte) {
	*errloc = EINVAL;
	return -1;
    }
    info->nread = (unsigned long) offset;
    return info->nread;
}

/*
 *-------------------------------------------------------------------------
 *
 * ZipChannelWatchChannel --
 *
 *	This function is called for event notifications on channel.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	None.
 *
 *-------------------------------------------------------------------------
 */

static void
ZipChannelWatchChannel(ClientData instanceData, int mask)
{
    return;
}

/*
 *-------------------------------------------------------------------------
 *
 * ZipChannelGetFile --
 *
 *	This function is called to retrieve OS handle for channel.
 *
 * Results:
 *	Always TCL_ERROR since there's never an OS handle for a
 *	file within a ZIP archive.
 *
 * Side effects:
 *	None.
 *
 *-------------------------------------------------------------------------
 */

static int
ZipChannelGetFile(ClientData instanceData, int direction,
		  ClientData *handlePtr)
{
    return TCL_ERROR;
}

/*
 * The channel type/driver definition used for ZIP archive members.
 */

static Tcl_ChannelType ZipChannelType = {
    "zip",                  /* Type name. */
#ifdef TCL_CHANNEL_VERSION_4
    TCL_CHANNEL_VERSION_4,
    ZipChannelClose,        /* Close channel, clean instance data */
    ZipChannelRead,         /* Handle read request */
    ZipChannelWrite,        /* Handle write request */
    ZipChannelSeek,         /* Move location of access point, NULL'able */
    NULL,                   /* Set options, NULL'able */
    NULL,                   /* Get options, NULL'able */
    ZipChannelWatchChannel, /* Initialize notifier */
    ZipChannelGetFile,      /* Get OS handle from the channel */
    NULL,                   /* 2nd version of close channel, NULL'able */
    NULL,                   /* Set blocking mode for raw channel, NULL'able */
    NULL,                   /* Function to flush channel, NULL'able */
    NULL,                   /* Function to handle event, NULL'able */
    NULL,                   /* Wide seek function, NULL'able */
    NULL,                   /* Thread action function, NULL'able */
#else
    NULL,                   /* Set blocking/nonblocking behaviour, NULL'able */
    ZipChannelClose,        /* Close channel, clean instance data */
    ZipChannelRead,         /* Handle read request */
    ZipChannelWrite,        /* Handle write request */
    ZipChannelSeek,         /* Move location of access point, NULL'able */
    NULL,                   /* Set options, NULL'able */
    NULL,                   /* Get options, NULL'able */
    ZipChannelWatchChannel, /* Initialize notifier */
    ZipChannelGetFile,      /* Get OS handle from the channel */
#endif
};

/*
 *-------------------------------------------------------------------------
 *
 * ZipChannelOpen --
 *
 *	This function opens a Tcl_Channel on a file from a mounted ZIP
 *	archive according to given open mode.
 *
 * Results:
 *	Tcl_Channel on success, or NULL on error.
 *
 * Side effects:
 *	Memory is allocated, the file from the ZIP archive is uncompressed.
 *
 *-------------------------------------------------------------------------
 */

static Tcl_Channel
ZipChannelOpen(Tcl_Interp *interp, char *filename, int mode, int permissions)
{
    ZipEntry *z;
    ZipChannel *info;
    int i, ch, trunc, wr, flags = 0;
    char cname[128];

    if ((mode & O_APPEND) ||
	((ZipFS.wrmax <= 0) && (mode & (O_WRONLY | O_RDWR)))) {
	if (interp != NULL) {
	    Tcl_SetObjResult(interp, Tcl_NewStringObj("unsupported open mode", -1));
	}
	return NULL;
    }
    WriteLock();
    z = ZipFSLookup(filename);
    if (z == NULL) {
	if (interp != NULL) {
	    Tcl_SetObjResult(interp, Tcl_NewStringObj("file not found", -1));
	    Tcl_AppendResult(interp, " \"", filename, "\"", NULL);
	}
	goto error;
    }
    trunc = (mode & O_TRUNC) != 0;
    wr = (mode & (O_WRONLY | O_RDWR)) != 0;
    if ((z->cmeth != ZIP_COMPMETH_STORED) &&
	(z->cmeth != ZIP_COMPMETH_DEFLATED)) {
	if (interp != NULL) {
	    Tcl_SetObjResult(interp,
		Tcl_NewStringObj("unsupported compression method", -1));
	}
	goto error;
    }
    if (wr && z->isdir) {
	if (interp != NULL) {
	    Tcl_SetObjResult(interp,
		Tcl_NewStringObj("unsupported file type", -1));
	}
	goto error;
    }
    if (!trunc) {
	flags |= TCL_READABLE;
	if (z->isenc && (z->zipfile->pwbuf[0] == 0)) {
	    if (interp != NULL) {
		Tcl_SetObjResult(interp,
		    Tcl_NewStringObj("decryption failed", -1));
	    }
	    goto error;
	} else if (wr && (z->data == NULL) && (z->nbyte > ZipFS.wrmax)) {
	    if (interp != NULL) {
		Tcl_SetObjResult(interp,
		    Tcl_NewStringObj("file too large", -1));
	    }
	    goto error;
	}
    } else {
	flags = TCL_WRITABLE;
    }
    info = (ZipChannel *) Tcl_AttemptAlloc(sizeof (*info));
    if (info == NULL) {
	if (interp != NULL) {
	    Tcl_SetObjResult(interp, Tcl_NewStringObj("out of memory", -1));
	}
	goto error;
    }
    info->zipfile = z->zipfile;
    info->zipentry = z;
    info->nread = 0;
    if (wr) {
	flags |= TCL_WRITABLE;
	info->iswr = 1;
	info->isdir = 0;
	info->nmax = ZipFS.wrmax;
	info->iscompr = 0;
	info->isenc = 0;
	info->ubuf = (unsigned char *) Tcl_AttemptAlloc(info->nmax);
	if (info->ubuf == NULL) {
merror0:
	    if (info->ubuf != NULL) {
		Tcl_Free((char *) info->ubuf);
	    }
	    Tcl_Free((char *) info);
	    if (interp != NULL) {
		Tcl_SetObjResult(interp,
		    Tcl_NewStringObj("out of memory", -1));
	    }
	    goto error;
	}
	memset(info->ubuf, 0, info->nmax);
	if (trunc) {
	    info->nbyte = 0;
	} else {
	    if (z->data != NULL) {
		unsigned int j = z->nbyte;

		if (j > info->nmax) {
		    j = info->nmax;
		}
		memcpy(info->ubuf, z->data, j);
		info->nbyte = j;
	    } else {
		unsigned char *zbuf = z->zipfile->data + z->offset;

		if (z->isenc) {
		    int len = z->zipfile->pwbuf[0];
		    char pwbuf[260];

		    for (i = 0; i < len; i++) {
			ch = z->zipfile->pwbuf[len - i];
			pwbuf[i] = (ch & 0x0f) | pwrot[(ch >> 4) & 0x0f];
		    }
		    pwbuf[i] = '\0';
		    init_keys(pwbuf, info->keys, crc32tab);
		    memset(pwbuf, 0, sizeof (pwbuf));
		    for (i = 0; i < 12; i++) {
			ch = info->ubuf[i];
			zdecode(info->keys, crc32tab, ch);
		    }
		    zbuf += i;
		}
		if (z->cmeth == ZIP_COMPMETH_DEFLATED) {
		    z_stream stream;
		    int err;
		    unsigned char *cbuf = NULL;

		    memset(&stream, 0, sizeof (stream));
		    stream.zalloc = Z_NULL;
		    stream.zfree = Z_NULL;
		    stream.opaque = Z_NULL;
		    stream.avail_in = z->nbytecompr;
		    if (z->isenc) {
			unsigned int j;

			stream.avail_in -= 12;
			cbuf = (unsigned char *)
			    Tcl_AttemptAlloc(stream.avail_in);
			if (cbuf == NULL) {
			    goto merror0;
			}
			for (j = 0; j < stream.avail_in; j++) {
			    ch = info->ubuf[j];
			    cbuf[j] = zdecode(info->keys, crc32tab, ch);
			}
			stream.next_in = cbuf;
		    } else {
			stream.next_in = zbuf;
		    }
		    stream.next_out = info->ubuf;
		    stream.avail_out = info->nmax;
		    if (inflateInit2(&stream, -15) != Z_OK) {
			goto cerror0;
		    }
		    err = inflate(&stream, Z_SYNC_FLUSH);
		    inflateEnd(&stream);
		    if ((err == Z_STREAM_END) ||
			((err == Z_OK) && (stream.avail_in == 0))) {
			if (cbuf != NULL) {
			    memset(info->keys, 0, sizeof (info->keys));
			    Tcl_Free((char *) cbuf);
			}
			goto wrapchan;
		    }
cerror0:
		    if (cbuf != NULL) {
			memset(info->keys, 0, sizeof (info->keys));
			Tcl_Free((char *) cbuf);
		    }
		    if (info->ubuf != NULL) {
			Tcl_Free((char *) info->ubuf);
		    }
		    Tcl_Free((char *) info);
		    if (interp != NULL) {
			Tcl_SetObjResult(interp,
			    Tcl_NewStringObj("decompression error", -1));
		    }
		    goto error;
		} else if (z->isenc) {
		    for (i = 0; i < z->nbyte - 12; i++) {
			ch = zbuf[i];
			info->ubuf[i] = zdecode(info->keys, crc32tab, ch);
		    }
		} else {
		    memcpy(info->ubuf, zbuf, z->nbyte);
		}
		memset(info->keys, 0, sizeof (info->keys));
		goto wrapchan;
	    }
	}
    } else if (z->data != NULL) {
	flags |= TCL_READABLE;
	info->iswr = 0;
	info->iscompr = 0;
	info->isdir = 0;
	info->isenc = 0;
	info->nbyte = z->nbyte;
	info->nmax = 0;
	info->ubuf = z->data;
    } else {
	flags |= TCL_READABLE;
	info->iswr = 0;
	info->iscompr = z->cmeth == ZIP_COMPMETH_DEFLATED;
	info->ubuf = z->zipfile->data + z->offset;
	info->isdir = z->isdir;
	info->isenc = z->isenc;
	info->nbyte = z->nbyte;
	info->nmax = 0;
	if (info->isenc) {
	    int len = z->zipfile->pwbuf[0];
	    char pwbuf[260];

	    for (i = 0; i < len; i++) {
		ch = z->zipfile->pwbuf[len - i];
		pwbuf[i] = (ch & 0x0f) | pwrot[(ch >> 4) & 0x0f];
	    }
	    pwbuf[i] = '\0';
	    init_keys(pwbuf, info->keys, crc32tab);
	    memset(pwbuf, 0, sizeof (pwbuf));
	    for (i = 0; i < 12; i++) {
		ch = info->ubuf[i];
		zdecode(info->keys, crc32tab, ch);
	    }
	    info->ubuf += i;
	}
	if (info->iscompr) {
	    z_stream stream;
	    int err;
	    unsigned char *ubuf = NULL;
	    unsigned int j;

	    memset(&stream, 0, sizeof (stream));
	    stream.zalloc = Z_NULL;
	    stream.zfree = Z_NULL;
	    stream.opaque = Z_NULL;
	    stream.avail_in = z->nbytecompr;
	    if (info->isenc) {
		stream.avail_in -= 12;
		ubuf = (unsigned char *) Tcl_AttemptAlloc(stream.avail_in);
		if (ubuf == NULL) {
		    info->ubuf = NULL;
		    goto merror;
		}
		for (j = 0; j < stream.avail_in; j++) {
		    ch = info->ubuf[j];
		    ubuf[j] = zdecode(info->keys, crc32tab, ch);
		}
		stream.next_in = ubuf;
	    } else {
		stream.next_in = info->ubuf;
	    }
	    stream.next_out = info->ubuf =
		(unsigned char *) Tcl_AttemptAlloc(info->nbyte);
	    if (info->ubuf == NULL) {
merror:
		if (ubuf != NULL) {
		    info->isenc = 0;
		    memset(info->keys, 0, sizeof (info->keys));
		    Tcl_Free((char *) ubuf);
		}
		Tcl_Free((char *) info);
		if (interp != NULL) {
		    Tcl_SetObjResult(interp,
			Tcl_NewStringObj("out of memory", -1));
		}
		goto error;
	    }
	    stream.avail_out = info->nbyte;
	    if (inflateInit2(&stream, -15) != Z_OK) {
		goto cerror;
	    }
	    err = inflate(&stream, Z_SYNC_FLUSH);
	    inflateEnd(&stream);
	    if ((err == Z_STREAM_END) ||
		((err == Z_OK) && (stream.avail_in == 0))) {
		if (ubuf != NULL) {
		    info->isenc = 0;
		    memset(info->keys, 0, sizeof (info->keys));
		    Tcl_Free((char *) ubuf);
		}
		goto wrapchan;
	    }
cerror:
	    if (ubuf != NULL) {
		info->isenc = 0;
		memset(info->keys, 0, sizeof (info->keys));
		Tcl_Free((char *) ubuf);
	    }
	    if (info->ubuf != NULL) {
		Tcl_Free((char *) info->ubuf);
	    }
	    Tcl_Free((char *) info);
	    if (interp != NULL) {
		Tcl_SetObjResult(interp,
		    Tcl_NewStringObj("decompression error", -1));
	    }
	    goto error;
	}
    }
wrapchan:
    sprintf(cname, "zipfs_%lx_%d", (unsigned long) z->offset, ZipFS.idCount++);
    z->zipfile->nopen++;
    Unlock();
    return Tcl_CreateChannel(&ZipChannelType, cname, (ClientData) info, flags);

error:
    Unlock();
    return NULL;
}

/*
 *-------------------------------------------------------------------------
 *
 * ZipEntryStat --
 *
 *	This function implements the ZIP filesystem specific version
 *	of the library version of stat.
 *
 * Results:
 *	See stat documentation.
 *
 * Side effects:
 *	See stat documentation.
 *
 *-------------------------------------------------------------------------
 */

static int
ZipEntryStat(char *path, Tcl_StatBuf *buf)
{
    ZipEntry *z;
    int ret = -1;

    ReadLock();
    z = ZipFSLookup(path);
    if (z == NULL) {
	goto done;
    }
    memset(buf, 0, sizeof (Tcl_StatBuf));
    if (z->isdir) {
	buf->st_mode = S_IFDIR | 0555;
    } else {
	buf->st_mode = S_IFREG | 0555;
    }
    buf->st_size = z->nbyte;
    buf->st_mtime = z->timestamp;
    buf->st_ctime = z->timestamp;
    buf->st_atime = z->timestamp;
    ret = 0;
done:
    Unlock();
    return ret;
}

/*
 *-------------------------------------------------------------------------
 *
 * ZipEntryAccess --
 *
 *	This function implements the ZIP filesystem specific version
 *	of the library version of access.
 *
 * Results:
 *	See access documentation.
 *
 * Side effects:
 *	See access documentation.
 *
 *-------------------------------------------------------------------------
 */

static int
ZipEntryAccess(char *path, int mode)
{
    ZipEntry *z;

    if (mode & 3) {
	return -1;
    }
    ReadLock();
    z = ZipFSLookup(path);
    Unlock();
    return (z != NULL) ? 0 : -1;
}

/*
 *-------------------------------------------------------------------------
 *
 * Zip_FSOpenFileChannelProc --
 *
 * Results:
 *
 * Side effects:
 *
 *-------------------------------------------------------------------------
 */

static Tcl_Channel
Zip_FSOpenFileChannelProc(Tcl_Interp *interp, Tcl_Obj *pathPtr,
			  int mode, int permissions)
{
    int len;

    if (!(pathPtr = Tcl_FSGetNormalizedPath(NULL, pathPtr))) return NULL;

    return ZipChannelOpen(interp, Tcl_GetStringFromObj(pathPtr, &len),
			  mode, permissions);
}

/*
 *-------------------------------------------------------------------------
 *
 * Zip_FSStatProc --
 *
 *	This function implements the ZIP filesystem specific version
 *	of the library version of stat.
 *
 * Results:
 *	See stat documentation.
 *
 * Side effects:
 *	See stat documentation.
 *
 *-------------------------------------------------------------------------
 */

static int
Zip_FSStatProc(Tcl_Obj *pathPtr, Tcl_StatBuf *buf)
{
    int len;

    if (!(pathPtr = Tcl_FSGetNormalizedPath(NULL, pathPtr))) return -1;

    return ZipEntryStat(Tcl_GetStringFromObj(pathPtr, &len), buf);
}

/*
 *-------------------------------------------------------------------------
 *
 * Zip_FSAccessProc --
 *
 *	This function implements the ZIP filesystem specific version
 *	of the library version of access.
 *
 * Results:
 *	See access documentation.
 *
 * Side effects:
 *	See access documentation.
 *
 *-------------------------------------------------------------------------
 */

static int
Zip_FSAccessProc(Tcl_Obj *pathPtr, int mode)
{
    int len;

    if (!(pathPtr = Tcl_FSGetNormalizedPath(NULL, pathPtr))) return -1;

    return ZipEntryAccess(Tcl_GetStringFromObj(pathPtr, &len), mode);
}

/*
 *-------------------------------------------------------------------------
 *
 * Zip_FSFilesystemSeparatorProc --
 *
 *	This function returns the separator to be used for a given path. The
 *	object returned should have a refCount of zero
 *
 * Results:
 *	A Tcl object, with a refCount of zero. If the caller needs to retain a
 *	reference to the object, it should call Tcl_IncrRefCount, and should
 *	otherwise free the object.
 *
 * Side effects:
 *	None.
 *
 *-------------------------------------------------------------------------
 */

static Tcl_Obj *
Zip_FSFilesystemSeparatorProc(Tcl_Obj *pathPtr)
{
    return Tcl_NewStringObj("/", -1);
}

/*
 *-------------------------------------------------------------------------
 *
 * Zip_FSMatchInDirectoryProc --
 *
 *	This routine is used by the globbing code to search a directory for
 *	all files which match a given pattern.
 *
 * Results:
 *	The return value is a standard Tcl result indicating whether an
 *	error occurred in globbing. Errors are left in interp, good
 *	results are lappend'ed to resultPtr (which must be a valid object).
 *
 * Side effects:
 *	None.
 *
 *-------------------------------------------------------------------------
 */
static int
Zip_FSMatchInDirectoryProc(Tcl_Interp* interp, Tcl_Obj *result,
			   Tcl_Obj *pathPtr, const char *pattern,
			   Tcl_GlobTypeData *types)
{
    Tcl_HashEntry *hPtr;
    Tcl_HashSearch search;
    Tcl_Obj *normPathPtr;
    int scnt, len, l, dirOnly = -1, prefixLen, strip = 0;
    char *pat, *prefix, *path;
    Tcl_DString dsPref;

    if (!(normPathPtr = Tcl_FSGetNormalizedPath(NULL, pathPtr))) return -1;

    if (types != NULL) {
	dirOnly = (types->type & TCL_GLOB_TYPE_DIR) == TCL_GLOB_TYPE_DIR;
    }

    /* the prefix that gets prepended to results */
    prefix = Tcl_GetStringFromObj(pathPtr, &prefixLen);

    /* the (normalized) path we're searching */
    path = Tcl_GetStringFromObj(normPathPtr, &len);

    Tcl_DStringInit(&dsPref);
    Tcl_DStringAppend(&dsPref, prefix, prefixLen);

    if (strcmp(prefix, path) == 0) {
	prefix = NULL;
    } else {
	strip = len + 1;
    }
    if (prefix != NULL) {
	Tcl_DStringAppend(&dsPref, "/", 1);
	prefixLen++;
	prefix = Tcl_DStringValue(&dsPref);
    }
    ReadLock();
    if ((types != NULL) && (types->type == TCL_GLOB_TYPE_MOUNT)) {
	l = CountSlashes(path);
	if (path[len - 1] == '/') {
	    len--;
	} else {
	    l++;
	}
	if ((pattern == NULL) || (pattern[0] == '\0')) {
	    pattern = "*";
	}
	hPtr = Tcl_FirstHashEntry(&ZipFS.zipHash, &search);
	while (hPtr != NULL) {
	    ZipFile *zf = (ZipFile *) Tcl_GetHashValue(hPtr);

	    if (zf->mntptlen == 0) {
		ZipEntry *z = zf->topents;
		while (z != NULL) {
		    int lenz = strlen(z->name);
		    if ((lenz > len + 1) &&
			    (strncmp(z->name, path, len) == 0) &&
			    (z->name[len] == '/') &&
			    (CountSlashes(z->name) == l) &&
			    Tcl_StringCaseMatch(z->name + len + 1, pattern, 0)) {
			if (prefix != NULL) {
			    Tcl_DStringAppend(&dsPref, z->name, lenz);
			    Tcl_ListObjAppendElement(NULL, result,
				    Tcl_NewStringObj(Tcl_DStringValue(&dsPref),
					Tcl_DStringLength(&dsPref)));
			    Tcl_DStringSetLength(&dsPref, prefixLen);
			} else {
			    Tcl_ListObjAppendElement(NULL, result,
				    Tcl_NewStringObj(z->name, lenz));
			}
		    }
		    z = z->tnext;
		}
	    } else if ((zf->mntptlen > len + 1) &&
		    (strncmp(zf->mntpt, path, len) == 0) &&
		    (zf->mntpt[len] == '/') &&
		    (CountSlashes(zf->mntpt) == l) &&
		    Tcl_StringCaseMatch(zf->mntpt + len + 1, pattern, 0)) {
		if (prefix != NULL) {
		    Tcl_DStringAppend(&dsPref, zf->mntpt, zf->mntptlen);
		    Tcl_ListObjAppendElement(NULL, result,
			    Tcl_NewStringObj(Tcl_DStringValue(&dsPref),
				Tcl_DStringLength(&dsPref)));
		    Tcl_DStringSetLength(&dsPref, prefixLen);
		} else {
		    Tcl_ListObjAppendElement(NULL, result,
			    Tcl_NewStringObj(zf->mntpt, zf->mntptlen));
		}
	    }
	    hPtr = Tcl_NextHashEntry(&search);
	}
	goto end;
    }
    if ((pattern == NULL) || (pattern[0] == '\0')) {
	hPtr = Tcl_FindHashEntry(&ZipFS.fileHash, path);
	if (hPtr != NULL) {
	    ZipEntry *z = (ZipEntry *) Tcl_GetHashValue(hPtr);

	    if ((dirOnly < 0) ||
		    (!dirOnly && !z->isdir) ||
		    (dirOnly && z->isdir)) {
		if (prefix != NULL) {
		    Tcl_DStringAppend(&dsPref, z->name, -1);
		    Tcl_ListObjAppendElement(NULL, result,
			    Tcl_NewStringObj(Tcl_DStringValue(&dsPref),
				Tcl_DStringLength(&dsPref)));
		    Tcl_DStringSetLength(&dsPref, prefixLen);
		} else {
		    Tcl_ListObjAppendElement(NULL, result,
			    Tcl_NewStringObj(z->name, -1));
		}
	    }
	}
	goto end;
    }
    l = strlen(pattern);
    pat = Tcl_Alloc(len + l + 2);
    memcpy(pat, path, len);
    while ((len > 1) && (pat[len - 1] == '/')) {
	--len;
    }
    if ((len > 1) || (pat[0] != '/')) {
	pat[len] = '/';
	++len;
    }
    memcpy(pat + len, pattern, l + 1);
    scnt = CountSlashes(pat);
    for (hPtr = Tcl_FirstHashEntry(&ZipFS.fileHash, &search);
	    hPtr != NULL; hPtr = Tcl_NextHashEntry(&search)) {
	ZipEntry *z = (ZipEntry *) Tcl_GetHashValue(hPtr);
	if ((dirOnly >= 0) &&
		((dirOnly && !z->isdir) || (!dirOnly && z->isdir))) {
	    continue;
	}
	if ((z->depth == scnt) && Tcl_StringCaseMatch(z->name, pat, 0)) {
	    if (prefix != NULL) {
		Tcl_DStringAppend(&dsPref, z->name + strip, -1);
		Tcl_ListObjAppendElement(NULL, result,
			Tcl_NewStringObj(Tcl_DStringValue(&dsPref),
			    Tcl_DStringLength(&dsPref)));
		Tcl_DStringSetLength(&dsPref, prefixLen);
	    } else {
		Tcl_ListObjAppendElement(NULL, result,
			Tcl_NewStringObj(z->name + strip, -1));
	    }
	}
    }
    Tcl_Free(pat);
end:
    Unlock();
    Tcl_DStringFree(&dsPref);
    return TCL_OK;
}

/*
 *-------------------------------------------------------------------------
 *
 * Zip_FSPathInFilesystemProc --
 *
 *	This function determines if the given path object is in the
 *	ZIP filesystem.
 *
 * Results:
 *	TCL_OK when the path object is in the ZIP filesystem, -1 otherwise.
 *
 * Side effects:
 *	None.
 *
 *-------------------------------------------------------------------------
 */

static int
Zip_FSPathInFilesystemProc(Tcl_Obj *pathPtr, ClientData *clientDataPtr)
{
    Tcl_HashEntry *hPtr;
    Tcl_HashSearch search;
    ZipFile *zf;
    int ret = -1, len;
    char *path;

    if (!(pathPtr = Tcl_FSGetNormalizedPath(NULL, pathPtr))) return -1;

    path = Tcl_GetStringFromObj(pathPtr, &len);
    if(strncmp(path,ZIPFS_VOLUME,ZIPFS_VOLUME_LEN)!=0) {
      return -1;
    }

    len = strlen(path);

    ReadLock();
    hPtr = Tcl_FindHashEntry(&ZipFS.fileHash, path);
    if (hPtr != NULL) {
      ret = TCL_OK;
      goto endloop;
    }
    hPtr = Tcl_FirstHashEntry(&ZipFS.zipHash, &search);
    while (hPtr != NULL) {
      zf = (ZipFile *) Tcl_GetHashValue(hPtr);
      if (zf->mntptlen == 0) {
        ZipEntry *z = zf->topents;
        while (z != NULL) {
          int lenz = strlen(z->name);

          if ((len >= lenz) &&
            (strncmp(path, z->name, lenz) == 0)) {
            ret = TCL_OK;
            goto endloop;
          }
          z = z->tnext;
        }
      } else if ((len >= zf->mntptlen) &&
        (strncmp(path, zf->mntpt, zf->mntptlen) == 0)) {
        ret = TCL_OK;
        goto endloop;
      }
      hPtr = Tcl_NextHashEntry(&search);
    }
endloop:
    Unlock();
    return ret;
}

/*
 *-------------------------------------------------------------------------
 *
 * Zip_FSListVolumesProc --
 *
 *	Lists the currently mounted ZIP filesystem volumes.
 *
 * Results:
 *	The list of volumes.
 *
 * Side effects:
 *	None
 *
 *-------------------------------------------------------------------------
 */
static Tcl_Obj *
Zip_FSListVolumesProc(void) {
    return Tcl_NewStringObj(ZIPFS_VOLUME, -1);
}

/*
 *-------------------------------------------------------------------------
 *
 * Zip_FSFileAttrStringsProc --
 *
 *	This function implements the ZIP filesystem dependent 'file attributes'
 *	subcommand, for listing the set of possible attribute strings.
 *
 * Results:
 *	An array of strings
 *
 * Side effects:
 *	None.
 *
 *-------------------------------------------------------------------------
 */

static const char *const *
Zip_FSFileAttrStringsProc(Tcl_Obj *pathPtr, Tcl_Obj** objPtrRef)
{
    static const char *const attrs[] = {
	"-uncompsize",
	"-compsize",
	"-offset",
	"-mount",
	"-archive",
	"-permissions",
	NULL,
    };

    return attrs;
}

/*
 *-------------------------------------------------------------------------
 *
 * Zip_FSFileAttrsGetProc --
 *
 *	This function implements the ZIP filesystem specific
 *	'file attributes' subcommand, for 'get' operations.
 *
 * Results:
 *	Standard Tcl return code. The object placed in objPtrRef (if TCL_OK
 *	was returned) is likely to have a refCount of zero. Either way we must
 *	either store it somewhere (e.g. the Tcl result), or Incr/Decr its
 *	refCount to ensure it is properly freed.
 *
 * Side effects:
 *	None.
 *
 *-------------------------------------------------------------------------
 */

static int
Zip_FSFileAttrsGetProc(Tcl_Interp *interp, int index, Tcl_Obj *pathPtr,
		       Tcl_Obj **objPtrRef)
{
    int len, ret = TCL_OK;
    char *path;
    ZipEntry *z;

    if (!(pathPtr = Tcl_FSGetNormalizedPath(NULL, pathPtr))) return -1;

    path = Tcl_GetStringFromObj(pathPtr, &len);
    ReadLock();
    z = ZipFSLookup(path);
    if (z == NULL) {
	if (interp != NULL) {
	    Tcl_SetObjResult(interp, Tcl_NewStringObj("file not found", -1));
	}
	ret = TCL_ERROR;
	goto done;
    }
    switch (index) {
    case 0:
	*objPtrRef = Tcl_NewIntObj(z->nbyte);
	goto done;
    case 1:
	*objPtrRef= Tcl_NewIntObj(z->nbytecompr);
	goto done;
    case 2:
	*objPtrRef= Tcl_NewLongObj(z->offset);
	goto done;
    case 3:
	*objPtrRef= Tcl_NewStringObj(z->zipfile->mntpt, -1);
	goto done;
    case 4:
	*objPtrRef= Tcl_NewStringObj(z->zipfile->name, -1);
	goto done;
    case 5:
	*objPtrRef= Tcl_NewStringObj("0555", -1);
	goto done;
    }
    if (interp != NULL) {
	Tcl_SetObjResult(interp, Tcl_NewStringObj("unknown attribute", -1));
    }
    ret = TCL_ERROR;
done:
    Unlock();
    return ret;
}

/*
 *-------------------------------------------------------------------------
 *
 * Zip_FSFileAttrsSetProc --
 *
 *	This function implements the ZIP filesystem specific
 *	'file attributes' subcommand, for 'set' operations.
 *
 * Results:
 *	Standard Tcl return code.
 *
 * Side effects:
 *	None.
 *
 *-------------------------------------------------------------------------
 */

static int
Zip_FSFileAttrsSetProc(Tcl_Interp *interp, int index, Tcl_Obj *pathPtr,
		       Tcl_Obj *objPtr)
{
    if (interp != NULL) {
	Tcl_SetObjResult(interp, Tcl_NewStringObj("unsupported operation", -1));
    }
    return TCL_ERROR;
}

/*
 *-------------------------------------------------------------------------
 *
 * Zip_FSFilesystemPathTypeProc --
 *
 * Results:
 *
 * Side effects:
 *
 *-------------------------------------------------------------------------
 */

static Tcl_Obj *
Zip_FSFilesystemPathTypeProc(Tcl_Obj *pathPtr)
{
    return Tcl_NewStringObj("zip", -1);
}


/*
 *-------------------------------------------------------------------------
 *
 * Zip_FSLoadFile --
 *
 *	This functions deals with loading native object code. If
 *	the given path object refers to a file within the ZIP
 *	filesystem, an approriate error code is returned to delegate
 *	loading to the caller (by copying the file to temp store
 *	and loading from there). As fallback when the file refers
 *	to the ZIP file system but is not present, it is looked up
 *	relative to the executable and loaded from there when available.
 *
 * Results:
 *	TCL_OK on success, -1 otherwise with error number set.
 *
 * Side effects:
 *	Loads native code into the process address space.
 *
 *-------------------------------------------------------------------------
 */

static int
Zip_FSLoadFile(Tcl_Interp *interp, Tcl_Obj *path, Tcl_LoadHandle *loadHandle,
	       Tcl_FSUnloadFileProc **unloadProcPtr, int flags)
{
    Tcl_FSLoadFileProc2 *loadFileProc;
#ifdef ANDROID
    /*
     * Force loadFileProc to native implementation since the
     * package manger already extracted the shared libraries
     * from the APK at install time.
     */

    loadFileProc = (Tcl_FSLoadFileProc2 *) tclNativeFilesystem.loadFileProc;
    if (loadFileProc != NULL) {
	return loadFileProc(interp, path, loadHandle, unloadProcPtr, flags);
    }
    Tcl_SetErrno(ENOENT);
    return -1;
#else
    Tcl_Obj *altPath = NULL;
    int ret = -1;

    if (Tcl_FSAccess(path, R_OK) == 0) {
	/*
	 * EXDEV should trigger loading by copying to temp store.
	 */
	Tcl_SetErrno(EXDEV);
	return ret;
    } else {
	Tcl_Obj *objs[2] = { NULL, NULL };

	objs[1] = TclPathPart(interp, path, TCL_PATH_DIRNAME);
	if ((objs[1] != NULL) && (Zip_FSAccessProc(objs[1], R_OK) == 0)) {
	    const char *execName = Tcl_GetNameOfExecutable();

	    /*
	     * Shared object is not in ZIP but its path prefix is,
	     * thus try to load from directory where the executable
	     * came from.
	     */
	    TclDecrRefCount(objs[1]);
	    objs[1] = TclPathPart(interp, path, TCL_PATH_TAIL);
	    /*
	     * Get directory name of executable manually to deal
	     * with cases where [file dirname [info nameofexecutable]]
	     * is equal to [info nameofexecutable] due to VFS effects.
	     */
	    if (execName != NULL) {
		const char *p = strrchr(execName, '/');

		if (p > execName + 1) {
		    --p;
		    objs[0] = Tcl_NewStringObj(execName, p - execName);
		}
	    }
	    if (objs[0] == NULL) {
		objs[0] = TclPathPart(interp, TclGetObjNameOfExecutable(),
					  TCL_PATH_DIRNAME);
	    }
	    if (objs[0] != NULL) {
		altPath = TclJoinPath(2, objs);
		if (altPath != NULL) {
		    Tcl_IncrRefCount(altPath);
		    if (Tcl_FSAccess(altPath, R_OK) == 0) {
			path = altPath;
		    }
		}
	    }
	}
	if (objs[0] != NULL) {
	    Tcl_DecrRefCount(objs[0]);
	}
	if (objs[1] != NULL) {
	    Tcl_DecrRefCount(objs[1]);
	}
    }
    loadFileProc = (Tcl_FSLoadFileProc2 *) tclNativeFilesystem.loadFileProc;
    if (loadFileProc != NULL) {
	ret = loadFileProc(interp, path, loadHandle, unloadProcPtr, flags);
    } else {
	Tcl_SetErrno(ENOENT);
    }
    if (altPath != NULL) {
	Tcl_DecrRefCount(altPath);
    }
    return ret;
#endif
}


/*
 * Define the ZIP filesystem dispatch table.
 */

MODULE_SCOPE const Tcl_Filesystem zipfsFilesystem;

const Tcl_Filesystem zipfsFilesystem = {
    "zipfs",
    sizeof (Tcl_Filesystem),
    TCL_FILESYSTEM_VERSION_2,
    Zip_FSPathInFilesystemProc,
    NULL, /* dupInternalRepProc */
    NULL, /* freeInternalRepProc */
    NULL, /* internalToNormalizedProc */
    NULL, /* createInternalRepProc */
    NULL, /* normalizePathProc */
    Zip_FSFilesystemPathTypeProc,
    Zip_FSFilesystemSeparatorProc,
    Zip_FSStatProc,
    Zip_FSAccessProc,
    Zip_FSOpenFileChannelProc,
    Zip_FSMatchInDirectoryProc,
    NULL, /* utimeProc */
    NULL, /* linkProc */
    Zip_FSListVolumesProc,
    Zip_FSFileAttrStringsProc,
    Zip_FSFileAttrsGetProc,
    Zip_FSFileAttrsSetProc,
    NULL, /* createDirectoryProc */
    NULL, /* removeDirectoryProc */
    NULL, /* deleteFileProc */
    NULL, /* copyFileProc */
    NULL, /* renameFileProc */
    NULL, /* copyDirectoryProc */
    NULL, /* lstatProc */
    (Tcl_FSLoadFileProc *) Zip_FSLoadFile,
    NULL, /* getCwdProc */
    NULL, /* chdirProc*/
};

#endif /* HAVE_ZLIB */



/*
 *-------------------------------------------------------------------------
 *
 * TclZipfs_Init --
 *
 *	Perform per interpreter initialization of this module.
 *
 * Results:
 *	The return value is a standard Tcl result.
 *
 * Side effects:
 *	Initializes this module if not already initialized, and adds
 *	module related commands to the given interpreter.
 *
 *-------------------------------------------------------------------------
 */

MODULE_SCOPE int
TclZipfs_Init(Tcl_Interp *interp)
{
#ifdef HAVE_ZLIB
    /* one-time initialization */
    WriteLock();
    Tcl_StaticPackage(interp, "zipfs", TclZipfs_Init, TclZipfs_Init);
    if (!ZipFS.initialized) {
#ifdef TCL_THREADS
	static const Tcl_Time t = { 0, 0 };
	/*
	 * Inflate condition variable.
	 */
	Tcl_MutexLock(&ZipFSMutex);
	Tcl_ConditionWait(&ZipFSCond, &ZipFSMutex, &t);
	Tcl_MutexUnlock(&ZipFSMutex);
#endif
	Tcl_FSRegister(NULL, &zipfsFilesystem);
	Tcl_InitHashTable(&ZipFS.fileHash, TCL_STRING_KEYS);
	Tcl_InitHashTable(&ZipFS.zipHash, TCL_STRING_KEYS);
	ZipFS.initialized = ZipFS.idCount = 1;
    }
    Unlock();
    if(interp != NULL) {
        static const EnsembleImplMap initMap[] = {
            {"mount",	ZipFSMountObjCmd,	NULL, NULL, NULL, 0},
            {"unmount",	ZipFSUnmountObjCmd,	NULL, NULL, NULL, 0},
            {"mkkey",	ZipFSMkKeyObjCmd,	NULL, NULL, NULL, 0},
            {"mkimg",	ZipFSMkImgObjCmd,	NULL, NULL, NULL, 0},
            {"mkzip",	ZipFSMkZipObjCmd,	NULL, NULL, NULL, 0},
            {"lmkimg",	ZipFSLMkImgObjCmd,	NULL, NULL, NULL, 0},
            {"lmkzip",	ZipFSLMkZipObjCmd,	NULL, NULL, NULL, 0},
            {"exists",	ZipFSExistsObjCmd,	NULL, NULL, NULL, 1},
            {"info",	ZipFSInfoObjCmd,	NULL, NULL, NULL, 1},
            {"list",	ZipFSListObjCmd,	NULL, NULL, NULL, 1},
            {"canonical", ZipFSCanonicalObjCmd, NULL, NULL, NULL, 1},
            {NULL, NULL, NULL, NULL, NULL, 0}
        };
        static const char findproc[] =
            "namespace eval zipfs {}\n"
            "proc ::zipfs::find dir {\n"
            " set result {}\n"
            " if {[catch {glob -directory $dir -tails -nocomplain * .*} list]} {\n"
            "  return $result\n"
            " }\n"
            " foreach file $list {\n"
            "  if {$file eq \".\" || $file eq \"..\"} {\n"
            "   continue\n"
            "  }\n"
            "  set file [file join $dir $file]\n"
            "  lappend result $file\n"
            "  foreach file [::zipfs::find $file] {\n"
            "   lappend result $file\n"
            "  }\n"
            " }\n"
            " return [lsort $result]\n"
            "}\n";
        Tcl_EvalEx(interp, findproc, -1, TCL_EVAL_GLOBAL);
        Tcl_LinkVar(interp, "::zipfs::wrmax", (char *) &ZipFS.wrmax,
            TCL_LINK_INT);
        TclMakeEnsemble(interp, "zipfs", initMap);
        Tcl_PkgProvide(interp, "zipfs", "2.0");
    }
    return TCL_OK;
#else
    if (interp != NULL) {
	Tcl_SetObjResult(interp, Tcl_NewStringObj("no zlib available", -1));
    }
    return TCL_ERROR;
#endif
}

static int TclZipfs_AppHook_FindTclInit(const char *archive){
    Tcl_Obj *vfsinitscript;
    int found;
    if(TclZipfs_Mount(NULL, archive, ZIPFS_ZIP_MOUNT, NULL)) {
        /* Either the file doesn't exist or it is not a zip archive */
        return TCL_ERROR;
    }
    vfsinitscript=Tcl_NewStringObj(ZIPFS_ZIP_MOUNT "/init.tcl",-1);
    Tcl_IncrRefCount(vfsinitscript);
    found=Tcl_FSAccess(vfsinitscript,F_OK);
    if(found==0) {
        return TCL_OK;
    }
    Tcl_DecrRefCount(vfsinitscript);
    vfsinitscript=Tcl_NewStringObj(ZIPFS_ZIP_MOUNT "/tcl_library/init.tcl",-1);
    Tcl_IncrRefCount(vfsinitscript);
    found=Tcl_FSAccess(vfsinitscript,F_OK);
    if(found==0) {
        return TCL_OK;
    }
    return TCL_ERROR;
}

int TclZipfs_AppHook(int *argc, char ***argv){
    /*
     * Tclkit_MainHook --
     * Performs the argument munging for the shell
     */

    CONST char *archive;
    Tcl_FindExecutable(*argv[0]);
    archive=Tcl_GetNameOfExecutable();
    TclZipfs_Init(NULL);
    TclSetPreInitScript(
"foreach {path} {\n"
"  {" ZIPFS_APP_MOUNT "/tcl_library}\n"
"  {" ZIPFS_ZIP_MOUNT "/tcl_library}\n"
"} {\n"
"  if {![file exists [file join $path init.tcl]]} continue\n"
"  set ::tcl_library $path\n"
"  break\n"
"}\n"
"foreach {path} {\n"
"  {" ZIPFS_APP_MOUNT "/tk_library}\n"
"  {" ZIPFS_ZIP_MOUNT "/tk_library}\n"
"  {" ZIPFS_VOLUME "lib/tk/tk_library}\n"
"} {\n"
"  if {[file exists [file join $path init.tcl]]} continue\n"
"  set ::tk_library $path\n"
"  break\n"
"}\n"
    );
    if(!TclZipfs_Mount(NULL, archive, ZIPFS_APP_MOUNT, NULL)) {
        int found;
        Tcl_Obj *vfsinitscript;
        vfsinitscript=Tcl_NewStringObj(ZIPFS_APP_MOUNT "/main.tcl",-1);
        Tcl_IncrRefCount(vfsinitscript);
        if(Tcl_FSAccess(vfsinitscript,F_OK)==0) {
            /* Startup script should be set before calling Tcl_AppInit */
            Tcl_SetStartupScript(vfsinitscript,NULL);
        } else {
            Tcl_DecrRefCount(vfsinitscript);
        }
        /* Set Tcl Encodings */
        vfsinitscript=Tcl_NewStringObj(ZIPFS_APP_MOUNT "/tcl_library/init.tcl",-1);
        Tcl_IncrRefCount(vfsinitscript);
        found=Tcl_FSAccess(vfsinitscript,F_OK);
        Tcl_DecrRefCount(vfsinitscript);
        if(found==TCL_OK) {
            return TCL_OK;
        }
    }
    /* Mount zip file and dll before releasing to search */
    if(TclZipfs_AppHook_FindTclInit(CFG_RUNTIME_ZIPFILE)==TCL_OK) {
        return TCL_OK;
    }
    if(TclZipfs_AppHook_FindTclInit(CFG_RUNTIME_PATH "/" CFG_RUNTIME_ZIPFILE)==TCL_OK) {
        return TCL_OK;
    }
    if(TclZipfs_AppHook_FindTclInit(CFG_RUNTIME_PATH "/" CFG_RUNTIME_DLLFILE)==TCL_OK) {
        return TCL_OK;
    }
    return TCL_OK;
}


#ifndef HAVE_ZLIB

/*
 *-------------------------------------------------------------------------
 *
 * TclZipfs_Mount, TclZipfs_Unmount --
 *
 *	Dummy version when no ZLIB support available.
 *
 *-------------------------------------------------------------------------
 */

int
TclZipfs_Mount(Tcl_Interp *interp, const char *zipname, const char *mntpt,
	    const char *passwd)
{
    return TclZipfs_Init(interp, 1);
}

int
TclZipfs_Unmount(Tcl_Interp *interp, const char *zipname)
{
    return TclZipfs_Init(interp, 1);
}

#endif

/*
 * Local Variables:
 * mode: c
 * c-basic-offset: 4
 * fill-column: 78
 * End:
 */

    foreach s [lsort -unique $filelist] {
	if {[file tail $s] ni {. ..}} {
	    file copy -force -- $s [file join $dest [file tail $s]]
	}
    }
    return
}
if {[file exists [file join $::tcl_library pkgIndex.tcl]]} {
  set dir $::tcl_library
  source [file join $::tcl_library pkgIndex.tcl]
}

# optparse.tcl --
#
#       (private) Option parsing package
#       Primarily used internally by the safe:: code.
#
#	WARNING: This code will go away in a future release
#	of Tcl.  It is NOT supported and you should not rely
#	on it.  If your code does rely on this package you
#	may directly incorporate this code into your application.

package require Tcl 8.5-
# When this version number changes, update the pkgIndex.tcl file
# and the install directory in the Makefiles.
package provide opt 0.4.7

namespace eval ::tcl {

    # Exported APIs
    namespace export OptKeyRegister OptKeyDelete OptKeyError OptKeyParse \
             OptProc OptProcArgGiven OptParse \
	     Lempty Lget \

# Tcl package index file, version 1.1
# This file is generated by the "pkg_mkIndex -direct" command
# and sourced either when an application starts up or
# by a "package unknown" script.  It invokes the
# "package ifneeded" command to set up package-related
# information so that packages will be loaded automatically
# in response to "package require" commands.  When this
# script is sourced, the variable $dir must contain the
# full path name of this file's directory.

if {![package vsatisfies [package provide Tcl] 8.5-]} {return}
package ifneeded opt 0.4.7 [list source [file join $dir optparse.tcl]]

###
# Package manifest for all Tcl packages included in the /library file system
###
foreach {package version file} {
  http            2.8.12 {http http.tcl}
  http            1.0    {http1.0 http.tcl}
  msgcat          1.6.1  {msgcat msgcat.tcl}
  opt             0.4.7  {opt optparse.tcl}
  platform        1.0.14 {platform platform.tcl}
  platform::shell 1.1.4  {platform shell.tcl}
  tcltest         2.4.1  {tcltest tcltest.tcl}
} {
  package ifneeded $package $version  [list source [file join $dir {*}$file]]
}
# Opt is the odd man out
package ifneeded opt 0.4.7 [list source [file join $dir opt optparse.tcl]]

# Tcl package index file, version 1.1
# This file is generated by the "pkg_mkIndex -direct" command
# and sourced either when an application starts up or
# by a "package unknown" script.  It invokes the
# "package ifneeded" command to set up package-related
# information so that packages will be loaded automatically
# in response to "package require" commands.  When this
# script is sourced, the variable $dir must contain the
# full path name of this file's directory.

if {![package vsatisfies [package provide Tcl] 8.5-]} {return}
package ifneeded tcltest 2.4.1 [list source [file join $dir tcltest.tcl]]

package require Tcl 8.5-		;# -verbose line uses [info frame]
namespace eval tcltest {

    # When the version number changes, be sure to update the pkgIndex.tcl file,
    # and the install directory in the Makefiles.  When the minor version
    # changes (new feature) be sure to update the man page as well.
    variable Version 2.4.1

    # Compatibility support for dumb variables defined in tcltest 1
    # Do not use these.  Call [package provide Tcl] and [info patchlevel]
    # yourself.  You don't need tcltest to wrap it for you.
    variable version [package provide Tcl]
    variable patchLevel [info patchlevel]

    package require tcltest 2.3.3
    namespace import -force ::tcltest::*
}

::tcltest::loadTestedCommands
catch [list package require -exact Tcltest [info patchlevel]]



# Do all this in a slave interp to avoid garbaging the package list
set i [interp create]
tcltest::loadIntoSlaveInterpreter $i {*}$argv
load {} Tcltest $i
interp eval $i {
namespace import -force ::tcltest::*
#package forget {*}[package names]
set oldPkgUnknown [package unknown]
package unknown {}
set oldPath $auto_path
set auto_path ""

testConstraint testpreferstable [llength [info commands testpreferstable]]

test package-1.1 {pkg::create gives error on insufficient args} -body {
    ::pkg::create
} -returnCodes error -match glob -result {wrong # args: should be "*"}
test package-1.2 {pkg::create gives error on bad args} -body {
    ::pkg::create -foo bar -bar baz -baz boo
} -returnCodes error -match glob -result {unknown option "bar": *}

    package forget t
    set x xxx
} -body {
    foreach i {1.4 3.4 2.3 2.4 2.2} {
	package ifneeded t $i "set x $i; package provide t $i"
    }
    package require t
    set x
} -result {3.4}
test package-3.2 {Tcl_PkgRequire procedure, picking best version} -setup {
    package forget t
    set x xxx
} -body {
    foreach i {1.4 3.4 2.3 2.4 2.2 3.5 3.2} {
	package ifneeded t $i "set x $i; package provide t $i"
    }
    package require t
    set x
} -result {3.5}
test package-3.3 {Tcl_PkgRequire procedure, picking best version} -setup {
    package forget t
    set x xxx
} -body {
    foreach i {3.5 2.1 2.3} {
	package ifneeded t $i "set x $i; package provide t $i"
    }
    package require t 2.2
    set x
} -result {2.3}
test package-3.4 {Tcl_PkgRequire procedure, picking best version} -setup {
    package forget t
    set x xxx
} -body {
    foreach i {1.4 3.4 2.3 2.4 2.2} {
	package ifneeded t $i "set x $i; package provide t $i"
    }
    package require -exact t 2.3
    set x
} -result {2.3}
test package-3.5 {Tcl_PkgRequire procedure, picking best version} -setup {
    package forget t
    set x xxx
} -body {
    foreach i {1.4 3.4 2.3 2.4 2.2} {
	package ifneeded t $i "set x $i; package provide t $i"
    }
    package require t 2.1
    set x
} -result {2.4}
test package-3.6 {Tcl_PkgRequire procedure, can't find suitable version} -setup {
    package forget t
} -returnCodes error -body {
    package unknown {}
    foreach i {1.4 3.4 2.3 2.4 2.2} {
	package ifneeded t $i "set x $i"

} -match glob -result {1 * invoked}
test package-3.12 {Tcl_PkgRequire procedure, self-deleting script} -setup {
    package forget t
    set x xxx
} -body {
    package ifneeded t 1.2 "package forget t; set x 1.2; package provide t 1.2"
    package require t 1.2
    set x
} -result {1.2}
test package-3.13 {Tcl_PkgRequire procedure, "package unknown" support} -setup {
    package forget t
    set x xxx
} -body {
    proc pkgUnknown args {
	# args = name requirement
	# requirement = v-v (for exact version)
	global x
	set x $args
	package provide [lindex $args 0] [lindex [split [lindex $args 1] -] 0]
    }
    foreach i {1.4 3.4 2.3 2.4 2.2} {
	package ifneeded t $i "set x $i"
    }
    package unknown pkgUnknown
    package require -exact t 1.5
    set x
} -cleanup {
    package unknown {}
} -result {t 1.5-1.5}
test package-3.14 {Tcl_PkgRequire procedure, "package unknown" support} -setup {
    package forget t
    set x xxx
} -body {

} -body {
    proc pkgUnknown args {
	global x
	set x $args
	package provide [lindex $args 0] 2.0
    }
    package require {a b}
    set x
} -cleanup {
    package unknown {}
} -result {{a b} 0-}
test package-3.16 {Tcl_PkgRequire procedure, "package unknown" error} -setup {
    package forget t
} -body {
    proc pkgUnknown args {

    package provide demo 1.2.3
} -body {
    package require -exact demo 1.2
} -returnCodes error -cleanup {
    package forget demo
} -result {version conflict for package "demo": have 1.2.3, need exactly 1.2}
test package-3.50 {Tcl_PkgRequire procedure, picking best stable version} -constraints testpreferstable -setup {
    interp create child
    load {} Tcltest child
    child eval {
    testpreferstable
    package forget t
    set x xxx
    }
} -body {
    child eval {
    foreach i {1.4 3.4 4.0a1 2.3 2.4 2.2} {
	package ifneeded t $i "set x $i; package provide t $i"
    }
    package require t
    set x
    }
} -cleanup {
    interp delete child
} -result {3.4}
test package-3.51 {Tcl_PkgRequire procedure, picking best stable version} -setup {
    package forget t
    set x xxx
} -body {
    foreach i {1.2b1 1.2 1.3a2 1.3} {
	package ifneeded t $i "set x $i; package provide t $i"
    }
    package require t
    set x
} -result {1.3}
test package-3.52 {Tcl_PkgRequire procedure, picking best stable version} -setup {
    package forget t
    set x xxx
} -body {
    foreach i {1.2b1 1.2 1.3 1.3a2} {
	package ifneeded t $i "set x $i; package provide t $i"
    }
    package require t
    set x
} -result {1.3}
test pkg-3.53 {Tcl_PkgRequire procedure, picking best stable version} -constraints testpreferstable -setup {
    testpreferstable
    package forget t
    set x xxx
} -body {
    foreach i {1.2b1 1.1} {
        package ifneeded t $i "set x $i; package provide t $i"
    }
    package require t
    set x
} -result {1.1}


test package-4.1 {Tcl_PackageCmd procedure} -returnCodes error -body {
    package
} -result {wrong # args: should be "package option ?arg ...?"}
test package-4.2 {Tcl_PackageCmd procedure, "forget" option} -setup {
    interp create child
} -body {
    child eval {
    package forget {*}[package names]
    package names
    }
} -cleanup {
    interp delete child
} -result {}
test package-4.3 {Tcl_PackageCmd procedure, "forget" option} -setup {
    interp create child
} -body {
    child eval {
    package forget {*}[package names]
    package forget foo
    }
} -cleanup {
    interp delete child
} -result {}
test package-4.4 {Tcl_PackageCmd procedure, "forget" option} -setup {
    interp create child
    child eval {
    package forget {*}[package names]
    set result {}
    }
} -body {
    child eval {
    package ifneeded t 1.1 {first script}
    package ifneeded t 2.3 {second script}
    package ifneeded x 1.4 {x's script}
    lappend result [lsort [package names]] [package versions t]
    package forget t
    lappend result [lsort [package names]] [package versions t]
    }
} -cleanup {
    interp delete child
} -result {{t x} {1.1 2.3} x {}}
test package-4.5 {Tcl_PackageCmd procedure, "forget" option} -setup {
    interp create child
    child eval {
    package forget {*}[package names]
    }
} -body {
    child eval {
    package ifneeded a 1.1 {first script}
    package ifneeded b 2.3 {second script}
    package ifneeded c 1.4 {third script}
    package forget
    set result [list [lsort [package names]]]
    package forget a c
    lappend result [lsort [package names]]
    }
} -cleanup {
    interp delete child
} -result {{a b c} b}
test package-4.5.1 {Tcl_PackageCmd procedure, "forget" option} -body {
    # Test for Bug 415273
    package ifneeded a 1 "I should have been forgotten"
    package forget no-such-package a
    package ifneeded a 1
} -cleanup {
    package forget a
} -result {}
test package-4.6 {Tcl_PackageCmd procedure, "ifneeded" option} -body {
    package ifneeded a
} -returnCodes error -result {wrong # args: should be "package ifneeded package version ?script?"}
test package-4.7 {Tcl_PackageCmd procedure, "ifneeded" option} -body {
    package ifneeded a b c d
} -returnCodes error -result {wrong # args: should be "package ifneeded package version ?script?"}
test package-4.8 {Tcl_PackageCmd procedure, "ifneeded" option} -body {
    package ifneeded t xyz
} -returnCodes error -result {expected version number but got "xyz"}
test package-4.9 {Tcl_PackageCmd procedure, "ifneeded" option} -setup {
    interp create child
} -body {
    child eval {
    package forget {*}[package names]
    list [package ifneeded foo 1.1] [package names]
    }
} -cleanup {
    interp delete child
} -result {{} {}}
test package-4.10 {Tcl_PackageCmd procedure, "ifneeded" option} -setup {
    interp create child
    child eval {
    package forget {*}[package names]
    }
} -body {
    child eval {
    package ifneeded t 1.4 "script for t 1.4"
    list [package names] [package ifneeded t 1.4] [package versions t]
    }
} -cleanup {
    interp delete child
} -result {t {script for t 1.4} 1.4}
test package-4.11 {Tcl_PackageCmd procedure, "ifneeded" option} -setup {
    interp create child
    child eval {
    package forget {*}[package names]
    }
} -body {
    child eval {
    package ifneeded t 1.4 "script for t 1.4"
    list [package ifneeded t 1.5] [package names] [package versions t]
    }
} -cleanup {
    interp delete child
} -result {{} t 1.4}
test package-4.12 {Tcl_PackageCmd procedure, "ifneeded" option} -setup {
    interp create child
    child eval {
    package forget {*}[package names]
    }
} -body {
    child eval {
    package ifneeded t 1.4 "script for t 1.4"
    package ifneeded t 1.4 "second script for t 1.4"
    list [package ifneeded t 1.4] [package names] [package versions t]
    }
} -cleanup {
    interp delete child
} -result {{second script for t 1.4} t 1.4}
test package-4.13 {Tcl_PackageCmd procedure, "ifneeded" option} -setup {
    package forget t
} -body {
    package ifneeded t 1.4 "script for t 1.4"
    package ifneeded t 1.2 "second script"
    package ifneeded t 3.1 "last script"
    list [package ifneeded t 1.2] [package versions t]
} -result {{second script} {1.4 1.2 3.1}}
test package-4.14 {Tcl_PackageCmd procedure, "names" option} -body {
    package names a
} -returnCodes error -result {wrong # args: should be "package names"}
test package-4.15 {Tcl_PackageCmd procedure, "names" option} -setup {
    interp create child
} -body {
    child eval {
    package forget {*}[package names]
    package names
    }
} -cleanup {
    interp delete child
} -result {}
test package-4.16 {Tcl_PackageCmd procedure, "names" option} -setup {
    interp create child
    child eval {
    package forget {*}[package names]
    }
} -body {
    child eval {
    package ifneeded x 1.2 {dummy}
    package provide x 1.3
    package provide y 2.4
    catch {package require z 47.16}
    lsort [package names]
    }
} -cleanup {
    interp delete child
} -result {x y}
test package-4.17 {Tcl_PackageCmd procedure, "provide" option} -body {
    package provide
} -returnCodes error -result {wrong # args: should be "package provide package ?version?"}
test package-4.18 {Tcl_PackageCmd procedure, "provide" option} -body {
    package provide a b c
} -returnCodes error -result {wrong # args: should be "package provide package ?version?"}