/*
** Copyright (c) 2011 D. Richard Hipp
** Copyright (c) 2011 Joe Mistachkin
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
** drh@hwaci.com
** http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code used to bridge the TH1 and Tcl scripting languages.
*/
#include "config.h"
#ifdef FOSSIL_ENABLE_TCL
#include "th.h"
#include "tcl.h"
/*
** These macros are designed to reduce the redundant code required to marshal
** arguments from TH1 to Tcl.
*/
#define USE_ARGV_TO_OBJV() \
int objc; \
Tcl_Obj **objv; \
int i;
#define COPY_ARGV_TO_OBJV() \
objc = argc-1; \
objv = (Tcl_Obj **)ckalloc((unsigned)(objc * sizeof(Tcl_Obj *))); \
for(i=1; i<argc; i++){ \
objv[i-1] = Tcl_NewStringObj(argv[i], argl[i]); \
Tcl_IncrRefCount(objv[i-1]); \
}
#define FREE_ARGV_TO_OBJV() \
for(i=1; i<argc; i++){ \
Tcl_DecrRefCount(objv[i-1]); \
} \
ckfree((char *)objv);
/*
** Fetch the Tcl interpreter from the specified void pointer, cast to a Tcl
** context.
*/
#define GET_CTX_TCL_INTERP(ctx) \
((struct TclContext *)(ctx))->interp
/*
** Define the Tcl shared library name, some exported function names, and some
** cross-platform macros for use with the Tcl stubs mechanism, when enabled.
*/
#if defined(USE_TCL_STUBS)
# if defined(_WIN32)
# define WIN32_LEAN_AND_MEAN
# include <windows.h>
# ifndef TCL_LIBRARY_NAME
# define TCL_LIBRARY_NAME "tcl86.dll\0"
# endif
# ifndef TCL_MINOR_OFFSET
# define TCL_MINOR_OFFSET (4)
# endif
# ifndef dlopen
# define dlopen(a,b) (void *)LoadLibrary((a))
# endif
# ifndef dlsym
# define dlsym(a,b) GetProcAddress((HANDLE)(a),(b))
# endif
# ifndef dlclose
# define dlclose(a) FreeLibrary((HANDLE)(a))
# endif
# else
# include <dlfcn.h>
# if defined(__CYGWIN__)
# ifndef TCL_LIBRARY_NAME
# define TCL_LIBRARY_NAME "libtcl8.6.dll\0"
# endif
# ifndef TCL_MINOR_OFFSET
# define TCL_MINOR_OFFSET (8)
# endif
# elif defined(__APPLE__)
# ifndef TCL_LIBRARY_NAME
# define TCL_LIBRARY_NAME "libtcl8.6.dylib\0"
# endif
# ifndef TCL_MINOR_OFFSET
# define TCL_MINOR_OFFSET (8)
# endif
# else
# ifndef TCL_LIBRARY_NAME
# define TCL_LIBRARY_NAME "libtcl8.6.so\0"
# endif
# ifndef TCL_MINOR_OFFSET
# define TCL_MINOR_OFFSET (8)
# endif
# endif /* defined(__CYGWIN__) */
# endif /* defined(_WIN32) */
# ifndef TCL_FINDEXECUTABLE_NAME
# define TCL_FINDEXECUTABLE_NAME "_Tcl_FindExecutable"
# endif
# ifndef TCL_CREATEINTERP_NAME
# define TCL_CREATEINTERP_NAME "_Tcl_CreateInterp"
# endif
# ifndef TCL_DELETEINTERP_NAME
# define TCL_DELETEINTERP_NAME "_Tcl_DeleteInterp"
# endif
#endif /* defined(USE_TCL_STUBS) */
/*
** The function types for Tcl_FindExecutable and Tcl_CreateInterp are needed
** when the Tcl library is being loaded dynamically by a stubs-enabled
** application (i.e. the inverse of using a stubs-enabled package). These are
** the only Tcl API functions that MUST be called prior to being able to call
** Tcl_InitStubs (i.e. because it requires a Tcl interpreter). For complete
** cleanup if the Tcl stubs initialization fails somehow, the Tcl_DeleteInterp
** function type is also required.
*/
typedef void (tcl_FindExecutableProc) (const char * argv0);
typedef Tcl_Interp *(tcl_CreateInterpProc) (void);
typedef void (tcl_DeleteInterpProc) (Tcl_Interp *interp);
/*
** The function types for the "hook" functions to be called before and after a
** TH1 command makes a call to evaluate a Tcl script. If the "pre" function
** returns anything but TH_OK, then evaluation of the Tcl script is skipped and
** that value is used as the return code. If the "post" function returns
** anything other than its rc argument, that will become the new return code
** for the command.
*/
typedef int (tcl_NotifyProc) (
void *pContext, /* The context for this notification. */
Th_Interp *interp, /* The TH1 interpreter being used. */
void *ctx, /* The original TH1 command context. */
int argc, /* Number of arguments for the TH1 command. */
const char **argv, /* Array of arguments for the TH1 command. */
int *argl, /* Array of lengths for the TH1 command arguments. */
int rc /* Recommended notification return value. */
);
/*
** Are we using our own private implementation of the Tcl stubs mechanism? If
** this is enabled, it prevents the user from having to link against the Tcl
** stubs library for the target platform, which may not be readily available.
*/
#if defined(FOSSIL_ENABLE_TCL_PRIVATE_STUBS)
/*
** HACK: Using some preprocessor magic and a private static variable, redirect
** the Tcl API calls [found within this file] to the function pointers
** that will be contained in our private Tcl stubs table. This takes
** advantage of the fact that the Tcl headers always define the Tcl API
** functions in terms of the "tclStubsPtr" variable.
*/
#define tclStubsPtr privateTclStubsPtr
static const TclStubs *tclStubsPtr = NULL;
/*
** Create a Tcl interpreter structure that mirrors just enough fields to get
** it up and running successfully with our private implementation of the Tcl
** stubs mechanism.
*/
struct PrivateTclInterp {
char *result;
Tcl_FreeProc *freeProc;
int errorLine;
const struct TclStubs *stubTable;
};
/*
** Fossil can now be compiled without linking to the actual Tcl stubs library.
** In that case, this function will be used to perform those steps that would
** normally be performed within the Tcl stubs library.
*/
static int initTclStubs(
Th_Interp *interp,
Tcl_Interp *tclInterp
){
tclStubsPtr = ((struct PrivateTclInterp *)tclInterp)->stubTable;
if( !tclStubsPtr || (tclStubsPtr->magic!=TCL_STUB_MAGIC) ){
Th_ErrorMessage(interp,
"could not initialize Tcl stubs: incompatible mechanism",
(const char *)"", 0);
return TH_ERROR;
}
/* NOTE: At this point, the Tcl API functions should be available. */
if( Tcl_PkgRequireEx(tclInterp, "Tcl", "8.4", 0, (void *)&tclStubsPtr)==0 ){
Th_ErrorMessage(interp,
"could not initialize Tcl stubs: incompatible version",
(const char *)"", 0);
return TH_ERROR;
}
return TH_OK;
}
#endif /* defined(FOSSIL_ENABLE_TCL_PRIVATE_STUBS) */
/*
** Creates and initializes a Tcl interpreter for use with the specified TH1
** interpreter. Stores the created Tcl interpreter in the Tcl context supplied
** by the caller. This must be declared here because quite a few functions in
** this file need to use it before it can be defined.
*/
static int createTclInterp(Th_Interp *interp, void *pContext);
/*
** Returns the Tcl interpreter result as a string with the associated length.
** If the Tcl interpreter or the Tcl result are NULL, the length will be 0.
** If the length pointer is NULL, the length will not be stored.
*/
static char *getTclResult(
Tcl_Interp *pInterp,
int *pN
){
Tcl_Obj *resultPtr;
if( !pInterp ){ /* This should not happen. */
if( pN ) *pN = 0;
return 0;
}
resultPtr = Tcl_GetObjResult(pInterp);
if( !resultPtr ){ /* This should not happen either? */
if( pN ) *pN = 0;
return 0;
}
return Tcl_GetStringFromObj(resultPtr, pN);
}
/*
** Tcl context information used by TH1. This structure definition has been
** copied from and should be kept in sync with the one in "main.c".
*/
struct TclContext {
int argc; /* Number of original arguments. */
char **argv; /* Full copy of the original arguments. */
void *library; /* The Tcl library module handle. */
tcl_FindExecutableProc *xFindExecutable; /* Tcl_FindExecutable() pointer. */
tcl_CreateInterpProc *xCreateInterp; /* Tcl_CreateInterp() pointer. */
tcl_DeleteInterpProc *xDeleteInterp; /* Tcl_DeleteInterp() pointer. */
Tcl_Interp *interp; /* The on-demand created Tcl interpreter. */
char *setup; /* The optional Tcl setup script. */
tcl_NotifyProc *xPreEval; /* Optional, called before Tcl_Eval*(). */
void *pPreContext; /* Optional, provided to xPreEval(). */
tcl_NotifyProc *xPostEval; /* Optional, called after Tcl_Eval*(). */
void *pPostContext; /* Optional, provided to xPostEval(). */
};
/*
** This function calls the configured xPreEval or xPostEval functions, if any.
** May have arbitrary side-effects. This function returns the result of the
** called notification function or the value of the rc argument if there is no
** notification function configured.
*/
static int notifyPreOrPostEval(
int bIsPost,
Th_Interp *interp,
void *ctx,
int argc,
const char **argv,
int *argl,
int rc
){
struct TclContext *tclContext = (struct TclContext *)ctx;
tcl_NotifyProc *xNotifyProc;
if ( !tclContext ){
Th_ErrorMessage(interp,
"invalid Tcl context", (const char *)"", 0);
return TH_ERROR;
}
xNotifyProc = bIsPost ? tclContext->xPostEval : tclContext->xPreEval;
if ( xNotifyProc ){
rc = xNotifyProc(bIsPost ?
tclContext->pPostContext : tclContext->pPreContext,
interp, ctx, argc, argv, argl, rc);
}
return rc;
}
/*
** Syntax:
**
** tclEval arg ?arg ...?
*/
static int tclEval_command(
Th_Interp *interp,
void *ctx,
int argc,
const char **argv,
int *argl
){
Tcl_Interp *tclInterp;
Tcl_Obj *objPtr;
int rc = TH_OK;
int nResult;
const char *zResult;
if( createTclInterp(interp, ctx)!=TH_OK ){
return TH_ERROR;
}
if( argc<2 ){
return Th_WrongNumArgs(interp, "tclEval arg ?arg ...?");
}
tclInterp = GET_CTX_TCL_INTERP(ctx);
if( !tclInterp || Tcl_InterpDeleted(tclInterp) ){
Th_ErrorMessage(interp, "invalid Tcl interpreter", (const char *)"", 0);
return TH_ERROR;
}
rc = notifyPreOrPostEval(0, interp, ctx, argc, argv, argl, rc);
if( rc!=TH_OK ){
return rc;
}
Tcl_Preserve((ClientData)tclInterp);
if( argc==2 ){
objPtr = Tcl_NewStringObj(argv[1], argl[1]);
Tcl_IncrRefCount(objPtr);
rc = Tcl_EvalObjEx(tclInterp, objPtr, 0);
Tcl_DecrRefCount(objPtr);
}else{
USE_ARGV_TO_OBJV();
COPY_ARGV_TO_OBJV();
objPtr = Tcl_ConcatObj(objc, objv);
Tcl_IncrRefCount(objPtr);
rc = Tcl_EvalObjEx(tclInterp, objPtr, 0);
Tcl_DecrRefCount(objPtr);
FREE_ARGV_TO_OBJV();
}
zResult = getTclResult(tclInterp, &nResult);
Th_SetResult(interp, zResult, nResult);
Tcl_Release((ClientData)tclInterp);
rc = notifyPreOrPostEval(1, interp, ctx, argc, argv, argl, rc);
return rc;
}
/*
** Syntax:
**
** tclExpr arg ?arg ...?
*/
static int tclExpr_command(
Th_Interp *interp,
void *ctx,
int argc,
const char **argv,
int *argl
){
Tcl_Interp *tclInterp;
Tcl_Obj *objPtr;
Tcl_Obj *resultObjPtr;
int rc = TH_OK;
int nResult;
const char *zResult;
if( createTclInterp(interp, ctx)!=TH_OK ){
return TH_ERROR;
}
if( argc<2 ){
return Th_WrongNumArgs(interp, "tclExpr arg ?arg ...?");
}
tclInterp = GET_CTX_TCL_INTERP(ctx);
if( !tclInterp || Tcl_InterpDeleted(tclInterp) ){
Th_ErrorMessage(interp, "invalid Tcl interpreter", (const char *)"", 0);
return TH_ERROR;
}
rc = notifyPreOrPostEval(0, interp, ctx, argc, argv, argl, rc);
if( rc!=TH_OK ){
return rc;
}
Tcl_Preserve((ClientData)tclInterp);
if( argc==2 ){
objPtr = Tcl_NewStringObj(argv[1], argl[1]);
Tcl_IncrRefCount(objPtr);
rc = Tcl_ExprObj(tclInterp, objPtr, &resultObjPtr);
Tcl_DecrRefCount(objPtr);
}else{
USE_ARGV_TO_OBJV();
COPY_ARGV_TO_OBJV();
objPtr = Tcl_ConcatObj(objc, objv);
Tcl_IncrRefCount(objPtr);
rc = Tcl_ExprObj(tclInterp, objPtr, &resultObjPtr);
Tcl_DecrRefCount(objPtr);
FREE_ARGV_TO_OBJV();
}
if( rc==TCL_OK ){
zResult = Tcl_GetStringFromObj(resultObjPtr, &nResult);
}else{
zResult = getTclResult(tclInterp, &nResult);
}
Th_SetResult(interp, zResult, nResult);
if( rc==TCL_OK ) Tcl_DecrRefCount(resultObjPtr);
Tcl_Release((ClientData)tclInterp);
rc = notifyPreOrPostEval(1, interp, ctx, argc, argv, argl, rc);
return rc;
}
/*
** Syntax:
**
** tclInvoke command ?arg ...?
*/
static int tclInvoke_command(
Th_Interp *interp,
void *ctx,
int argc,
const char **argv,
int *argl
){
Tcl_Interp *tclInterp;
int rc = TH_OK;
int nResult;
const char *zResult;
USE_ARGV_TO_OBJV();
if( createTclInterp(interp, ctx)!=TH_OK ){
return TH_ERROR;
}
if( argc<2 ){
return Th_WrongNumArgs(interp, "tclInvoke command ?arg ...?");
}
tclInterp = GET_CTX_TCL_INTERP(ctx);
if( !tclInterp || Tcl_InterpDeleted(tclInterp) ){
Th_ErrorMessage(interp, "invalid Tcl interpreter", (const char *)"", 0);
return TH_ERROR;
}
rc = notifyPreOrPostEval(0, interp, ctx, argc, argv, argl, rc);
if( rc!=TH_OK ){
return rc;
}
Tcl_Preserve((ClientData)tclInterp);
COPY_ARGV_TO_OBJV();
rc = Tcl_EvalObjv(tclInterp, objc, objv, 0);
FREE_ARGV_TO_OBJV();
zResult = getTclResult(tclInterp, &nResult);
Th_SetResult(interp, zResult, nResult);
Tcl_Release((ClientData)tclInterp);
rc = notifyPreOrPostEval(1, interp, ctx, argc, argv, argl, rc);
return rc;
}
/*
** Syntax:
**
** th1Eval arg
*/
static int Th1EvalObjCmd(
ClientData clientData,
Tcl_Interp *interp,
int objc,
Tcl_Obj *const objv[]
){
Th_Interp *th1Interp;
int nArg;
const char *arg;
int rc;
if( objc!=2 ){
Tcl_WrongNumArgs(interp, 1, objv, "arg");
return TCL_ERROR;
}
th1Interp = (Th_Interp *)clientData;
if( !th1Interp ){
Tcl_AppendResult(interp, "invalid TH1 interpreter", NULL);
return TCL_ERROR;
}
arg = Tcl_GetStringFromObj(objv[1], &nArg);
rc = Th_Eval(th1Interp, 0, arg, nArg);
arg = Th_GetResult(th1Interp, &nArg);
Tcl_SetObjResult(interp, Tcl_NewStringObj(arg, nArg));
return rc;
}
/*
** Syntax:
**
** th1Expr arg
*/
static int Th1ExprObjCmd(
ClientData clientData,
Tcl_Interp *interp,
int objc,
Tcl_Obj *const objv[]
){
Th_Interp *th1Interp;
int nArg;
const char *arg;
int rc;
if( objc!=2 ){
Tcl_WrongNumArgs(interp, 1, objv, "arg");
return TCL_ERROR;
}
th1Interp = (Th_Interp *)clientData;
if( !th1Interp ){
Tcl_AppendResult(interp, "invalid TH1 interpreter", NULL);
return TCL_ERROR;
}
arg = Tcl_GetStringFromObj(objv[1], &nArg);
rc = Th_Expr(th1Interp, arg, nArg);
arg = Th_GetResult(th1Interp, &nArg);
Tcl_SetObjResult(interp, Tcl_NewStringObj(arg, nArg));
return rc;
}
/*
** Array of Tcl integration commands. Used when adding or removing the Tcl
** integration commands from TH1.
*/
static struct _Command {
const char *zName;
Th_CommandProc xProc;
void *pContext;
} aCommand[] = {
{"tclEval", tclEval_command, 0},
{"tclExpr", tclExpr_command, 0},
{"tclInvoke", tclInvoke_command, 0},
{0, 0, 0}
};
/*
** Called if the Tcl interpreter is deleted. Removes the Tcl integration
** commands from the TH1 interpreter.
*/
static void Th1DeleteProc(
ClientData clientData,
Tcl_Interp *interp
){
int i;
Th_Interp *th1Interp = (Th_Interp *)clientData;
if( !th1Interp ) return;
/* Remove the Tcl integration commands. */
for(i=0; i<(sizeof(aCommand)/sizeof(aCommand[0])); i++){
Th_RenameCommand(th1Interp, aCommand[i].zName, -1, NULL, 0);
}
}
/*
** When Tcl stubs support is enabled, attempts to dynamically load the Tcl
** shared library and fetch the function pointers necessary to create an
** interpreter and initialize the stubs mechanism; otherwise, simply setup
** the function pointers provided by the caller with the statically linked
** functions.
*/
static int loadTcl(
Th_Interp *interp,
void **pLibrary,
tcl_FindExecutableProc **pxFindExecutable,
tcl_CreateInterpProc **pxCreateInterp,
tcl_DeleteInterpProc **pxDeleteInterp
){
#if defined(USE_TCL_STUBS)
char fileName[] = TCL_LIBRARY_NAME;
#endif /* defined(USE_TCL_STUBS) */
if( !pLibrary || !pxFindExecutable || !pxCreateInterp || !pxDeleteInterp ){
Th_ErrorMessage(interp,
"invalid Tcl loader argument(s)", (const char *)"", 0);
return TH_ERROR;
}
#if defined(USE_TCL_STUBS)
do {
void *library = dlopen(fileName, RTLD_NOW | RTLD_GLOBAL);
if( library ){
tcl_FindExecutableProc *xFindExecutable;
tcl_CreateInterpProc *xCreateInterp;
tcl_DeleteInterpProc *xDeleteInterp;
const char *procName = TCL_FINDEXECUTABLE_NAME;
xFindExecutable = (tcl_FindExecutableProc *)dlsym(library, procName + 1);
if( !xFindExecutable ){
xFindExecutable = (tcl_FindExecutableProc *)dlsym(library, procName);
}
if( !xFindExecutable ){
Th_ErrorMessage(interp,
"could not locate Tcl_FindExecutable", (const char *)"", 0);
dlclose(library);
return TH_ERROR;
}
procName = TCL_CREATEINTERP_NAME;
xCreateInterp = (tcl_CreateInterpProc *)dlsym(library, procName + 1);
if( !xCreateInterp ){
xCreateInterp = (tcl_CreateInterpProc *)dlsym(library, procName);
}
if( !xCreateInterp ){
Th_ErrorMessage(interp,
"could not locate Tcl_CreateInterp", (const char *)"", 0);
dlclose(library);
return TH_ERROR;
}
procName = TCL_DELETEINTERP_NAME;
xDeleteInterp = (tcl_DeleteInterpProc *)dlsym(library, procName + 1);
if( !xDeleteInterp ){
xDeleteInterp = (tcl_DeleteInterpProc *)dlsym(library, procName);
}
if( !xDeleteInterp ){
Th_ErrorMessage(interp,
"could not locate Tcl_DeleteInterp", (const char *)"", 0);
dlclose(library);
return TH_ERROR;
}
*pLibrary = library;
*pxFindExecutable = xFindExecutable;
*pxCreateInterp = xCreateInterp;
*pxDeleteInterp = xDeleteInterp;
return TH_OK;
}
} while( --fileName[TCL_MINOR_OFFSET]>'3' ); /* Tcl 8.4+ */
Th_ErrorMessage(interp,
"could not load Tcl shared library \"" TCL_LIBRARY_NAME "\"",
(const char *)"", 0);
return TH_ERROR;
#else
*pLibrary = 0;
*pxFindExecutable = Tcl_FindExecutable;
*pxCreateInterp = Tcl_CreateInterp;
*pxDeleteInterp = Tcl_DeleteInterp;
return TH_OK;
#endif /* defined(USE_TCL_STUBS) */
}
/*
** Sets the "argv0", "argc", and "argv" script variables in the Tcl interpreter
** based on the supplied command line arguments.
*/
static int setTclArguments(
Tcl_Interp *pInterp,
int argc,
char **argv
){
Tcl_Obj *objPtr;
Tcl_Obj *resultObjPtr;
Tcl_Obj *listPtr;
int rc = TCL_OK;
if( argc<=0 || !argv ){
return TCL_OK;
}
objPtr = Tcl_NewStringObj(argv[0], -1);
Tcl_IncrRefCount(objPtr);
resultObjPtr = Tcl_SetVar2Ex(pInterp, "argv0", NULL, objPtr,
TCL_GLOBAL_ONLY|TCL_LEAVE_ERR_MSG);
Tcl_DecrRefCount(objPtr);
if( !resultObjPtr ){
return TCL_ERROR;
}
objPtr = Tcl_NewIntObj(argc - 1);
Tcl_IncrRefCount(objPtr);
resultObjPtr = Tcl_SetVar2Ex(pInterp, "argc", NULL, objPtr,
TCL_GLOBAL_ONLY|TCL_LEAVE_ERR_MSG);
Tcl_DecrRefCount(objPtr);
if( !resultObjPtr ){
return TCL_ERROR;
}
listPtr = Tcl_NewListObj(0, NULL);
Tcl_IncrRefCount(listPtr);
if( argc>1 ){
while( --argc ){
objPtr = Tcl_NewStringObj(*++argv, -1);
Tcl_IncrRefCount(objPtr);
rc = Tcl_ListObjAppendElement(pInterp, listPtr, objPtr);
Tcl_DecrRefCount(objPtr);
if( rc!=TCL_OK ){
break;
}
}
}
if( rc==TCL_OK ){
resultObjPtr = Tcl_SetVar2Ex(pInterp, "argv", NULL, listPtr,
TCL_GLOBAL_ONLY|TCL_LEAVE_ERR_MSG);
if( !resultObjPtr ){
rc = TCL_ERROR;
}
}
Tcl_DecrRefCount(listPtr);
return rc;
}
/*
** Creates and initializes a Tcl interpreter for use with the specified TH1
** interpreter. Stores the created Tcl interpreter in the Tcl context supplied
** by the caller.
*/
static int createTclInterp(
Th_Interp *interp,
void *pContext
){
struct TclContext *tclContext = (struct TclContext *)pContext;
int argc;
char **argv;
char *argv0 = 0;
Tcl_Interp *tclInterp;
char *setup;
if ( !tclContext ){
Th_ErrorMessage(interp,
"invalid Tcl context", (const char *)"", 0);
return TH_ERROR;
}
if ( tclContext->interp ){
return TH_OK;
}
if( loadTcl(interp, &tclContext->library, &tclContext->xFindExecutable,
&tclContext->xCreateInterp, &tclContext->xDeleteInterp)!=TH_OK ){
return TH_ERROR;
}
argc = tclContext->argc;
argv = tclContext->argv;
if( argc>0 && argv ){
argv0 = argv[0];
}
tclContext->xFindExecutable(argv0);
tclInterp = tclContext->xCreateInterp();
if( !tclInterp ){
Th_ErrorMessage(interp,
"could not create Tcl interpreter", (const char *)"", 0);
return TH_ERROR;
}
#if defined(USE_TCL_STUBS)
#if defined(FOSSIL_ENABLE_TCL_PRIVATE_STUBS)
if( initTclStubs(interp, tclInterp)!=TH_OK ){
tclContext->xDeleteInterp(tclInterp);
return TH_ERROR;
}
#else
if( !Tcl_InitStubs(tclInterp, "8.4", 0) ){
Th_ErrorMessage(interp,
"could not initialize Tcl stubs", (const char *)"", 0);
tclContext->xDeleteInterp(tclInterp);
return TH_ERROR;
}
#endif /* defined(FOSSIL_ENABLE_TCL_PRIVATE_STUBS) */
#endif /* defined(USE_TCL_STUBS) */
if( Tcl_InterpDeleted(tclInterp) ){
Th_ErrorMessage(interp,
"Tcl interpreter appears to be deleted", (const char *)"", 0);
tclContext->xDeleteInterp(tclInterp); /* TODO: Redundant? */
return TH_ERROR;
}
tclContext->interp = tclInterp;
if( Tcl_Init(tclInterp)!=TCL_OK ){
Th_ErrorMessage(interp,
"Tcl initialization error:", Tcl_GetStringResult(tclInterp), -1);
Tcl_DeleteInterp(tclInterp);
tclContext->interp = tclInterp = 0;
return TH_ERROR;
}
if( setTclArguments(tclInterp, argc, argv)!=TCL_OK ){
Th_ErrorMessage(interp,
"Tcl error setting arguments:", Tcl_GetStringResult(tclInterp), -1);
Tcl_DeleteInterp(tclInterp);
tclContext->interp = tclInterp = 0;
return TH_ERROR;
}
/* Add the TH1 integration commands to Tcl. */
Tcl_CallWhenDeleted(tclInterp, Th1DeleteProc, interp);
Tcl_CreateObjCommand(tclInterp, "th1Eval", Th1EvalObjCmd, interp, NULL);
Tcl_CreateObjCommand(tclInterp, "th1Expr", Th1ExprObjCmd, interp, NULL);
/* If necessary, evaluate the custom Tcl setup script. */
setup = tclContext->setup;
if( setup && Tcl_Eval(tclInterp, setup)!=TCL_OK ){
Th_ErrorMessage(interp,
"Tcl setup script error:", Tcl_GetStringResult(tclInterp), -1);
Tcl_DeleteInterp(tclInterp);
tclContext->interp = tclInterp = 0;
return TH_ERROR;
}
return TH_OK;
}
/*
** Register the Tcl language commands with interpreter interp.
** Usually this is called soon after interpreter creation.
*/
int th_register_tcl(
Th_Interp *interp,
void *pContext
){
int i;
/* Add the Tcl integration commands to TH1. */
for(i=0; i<(sizeof(aCommand)/sizeof(aCommand[0])); i++){
void *ctx;
if ( !aCommand[i].zName || !aCommand[i].xProc ) continue;
ctx = aCommand[i].pContext;
/* Use Tcl interpreter for context? */
if( !ctx ) ctx = pContext;
Th_CreateCommand(interp, aCommand[i].zName, aCommand[i].xProc, ctx, 0);
}
return TH_OK;
}
#endif /* FOSSIL_ENABLE_TCL */