/* 
 * tclUnixFile.c --
 *
 *      This file contains wrappers around UNIX file handling functions.
 *      These wrappers mask differences between Windows and UNIX.
 *
 * Copyright (c) 1995-1998 Sun Microsystems, Inc.
 *
 * See the file "license.terms" for information on usage and redistribution
 * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 *
 * RCS: @(#) $Id: tclUnixFile.c,v 1.18 2002/02/15 14:28:50 dkf Exp $
 */

#include "tclInt.h"
#include "tclPort.h"


/*

char *
TclpFindExecutable(argv0)
    CONST char *argv0;		/* The value of the application's argv[0]
				 * (native). */
{
    CONST char *name, *p;

    Tcl_StatBuf statBuf;
    int length;
    Tcl_DString buffer, nameString;

    if (argv0 == NULL) {
	return NULL;
    }
    if (tclNativeExecutableName != NULL) {

	/*
	 * INTL: The following calls to access() and stat() should not be
	 * converted to Tclp routines because they need to operate on native
	 * strings directly.
	 */

	if ((access(name, X_OK) == 0)			   /* INTL: Native. */
		&& (Tcl_PlatformStat(name, &statBuf) == 0) /* INTL: Native. */
		&& S_ISREG(statBuf.st_mode)) {
	    goto gotName;
	}
	if (*p == '\0') {
	    break;
	} else if (*(p+1) == 0) {
	    p = "./";

    Tcl_GlobTypeData *types;	/* Object containing list of acceptable types.
				 * May be NULL. In particular the directory
				 * flag is very important. */
{
    CONST char *native, *fname, *dirName;
    DIR *d;
    Tcl_DString ds;
    Tcl_StatBuf statBuf;
    int matchHidden;
    int nativeDirLen;
    int result = TCL_OK;
    Tcl_DString dsOrig;
    Tcl_Obj *fileNamePtr;
    int baseLength;

    /*
     * Now open the directory for reading and iterate over the contents.
     */

    native = Tcl_UtfToExternalDString(NULL, dirName, -1, &ds);

    if ((Tcl_PlatformStat(native, &statBuf) != 0)	/* INTL: UTF-8. */
	    || !S_ISDIR(statBuf.st_mode)) {
	Tcl_DStringFree(&dsOrig);
	Tcl_DStringFree(&ds);
	return TCL_OK;
    }

    d = opendir(native);				/* INTL: Native. */

    }

    nativeDirLen = Tcl_DStringLength(&ds);

    while (1) {
        Tcl_DString utfDs;
	CONST char *utf;
	Tcl_DirEntry *entryPtr;
	
	entryPtr = Tcl_PlatformReaddir(d);		/* INTL: Native. */
	if (entryPtr == NULL) {
	    break;
	}
	if (types != NULL && (types->perm & TCL_GLOB_PERM_HIDDEN)) {
	    /* 
	     * We explicitly asked for hidden files, so turn around
	     * and ignore any file which isn't hidden.

	if (Tcl_StringMatch(utf, pattern) != 0) {
	    int typeOk = 1;

	    Tcl_DStringSetLength(&dsOrig, baseLength);
	    Tcl_DStringAppend(&dsOrig, utf, -1);
	    fname = Tcl_DStringValue(&dsOrig);
	    if (types != NULL) {
		Tcl_StatBuf buf;
		char *nativeEntry;
		Tcl_DStringSetLength(&ds, nativeDirLen);
		nativeEntry = Tcl_DStringAppend(&ds, entryPtr->d_name, -1);
		/* 
		 * The native name of the file is in entryPtr->d_name.
		 * We can use this below.
		 */
		
		if (types->perm != 0) {
		    if (Tcl_PlatformStat(nativeEntry, &buf) != 0) {
			/* 
			 * Either the file has disappeared between the
			 * 'readdir' call and the 'stat' call, or
			 * the file is a link to a file which doesn't
			 * exist (which we could ascertain with
			 * lstat), or there is some other strange
			 * problem.  In all these cases, we define this

			)) {
			typeOk = 0;
		    }
		}
		if (typeOk && (types->type != 0)) {
		    if (types->perm == 0) {
			/* We haven't yet done a stat on the file */
			if (Tcl_PlatformStat(nativeEntry, &buf) != 0) {
			    /* Posix error occurred */
			    typeOk = 0;
			}
		    }
		    if (typeOk) {
			/*
			 * In order bcdpfls as in 'find -t'

				    S_ISSOCK(buf.st_mode))
#endif
			    ) {
			    /* Do nothing -- this file is ok */
			} else {
			    typeOk = 0;
#ifdef S_ISLNK
			    if ((types->type & TCL_GLOB_TYPE_LINK)
				    && Tcl_PlatformLStat(nativeEntry, &buf)==0
				    && S_ISLNK(buf.st_mode)) {
				typeOk = 1;


			    }
#endif
			}
		    }
		}
	    }
	    if (typeOk) {

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

int 
TclpObjLstat(pathPtr, bufPtr)
    Tcl_Obj *pathPtr;		/* Path of file to stat */
    Tcl_StatBuf *bufPtr;	/* Filled with results of stat call. */
{
    CONST char *path = Tcl_FSGetNativePath(pathPtr);
    if (path == NULL) {
	return -1;
    } else {
	return Tcl_PlatformLStat(path, bufPtr);
    }
}

/*
 *---------------------------------------------------------------------------
 *
 * TclpObjGetCwd --

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

int 
TclpObjStat(pathPtr, bufPtr)
    Tcl_Obj *pathPtr;		/* Path of file to stat */
    Tcl_StatBuf *bufPtr;	/* Filled with results of stat call. */
{
    CONST char *path = Tcl_FSGetNativePath(pathPtr);
    if (path == NULL) {
	return -1;
    } else {
	return Tcl_PlatformStat(path, bufPtr);
    }
}


#ifdef S_IFLNK

Tcl_Obj* 

	linkPtr = Tcl_FSNewNativePath(pathPtr, native);
	Tcl_IncrRefCount(linkPtr);
    }
    return linkPtr;
}

#endif