tclFileName.c Go to the documentation of this file. /* * tclFileName.c -- * * This file contains routines for converting file names betwen native * and network form. * * Copyright (c) 1995-1998 Sun Microsystems, Inc. * Copyright (c) 1998-1999 by Scriptics Corporation. * * See the file "license.terms" for information on usage and redistribution of * this file, and for a DISCLAIMER OF ALL WARRANTIES. * * RCS: @(#) $Id: tclFileName.c,v 1.86 2007/12/13 15:23:17 dgp Exp $ */ #include "tclInt.h" #include "tclRegexp.h" #include "tclFileSystem.h" /* For TclGetPathType() */ /* * The following variable is set in the TclPlatformInit call to one of: * TCL_PLATFORM_UNIX or TCL_PLATFORM_WINDOWS. */ TclPlatformType tclPlatform = TCL_PLATFORM_UNIX; /* * Prototypes for local procedures defined in this file: */ static const char * DoTildeSubst(Tcl_Interp *interp, const char *user, Tcl_DString *resultPtr); static const char * ExtractWinRoot(const char *path, Tcl_DString *resultPtr, int offset, Tcl_PathType *typePtr); static int SkipToChar(char **stringPtr, int match); static Tcl_Obj* SplitWinPath(const char *path); static Tcl_Obj* SplitUnixPath(const char *path); static int DoGlob(Tcl_Interp *interp, Tcl_Obj *resultPtr, const char *separators, Tcl_Obj *pathPtr, int flags, char *pattern, Tcl_GlobTypeData *types);  /* *---------------------------------------------------------------------- * * SetResultLength -- * * Resets the result DString for ExtractWinRoot to accommodate * any NT extended path prefixes. * * Results: * None. * * Side effects: * May modify the Tcl_DString. *---------------------------------------------------------------------- */ static void SetResultLength( Tcl_DString *resultPtr, int offset, int extended) { Tcl_DStringSetLength(resultPtr, offset); if (extended == 2) { Tcl_DStringAppend(resultPtr, "//?/UNC/", 8); } else if (extended == 1) { Tcl_DStringAppend(resultPtr, "//?/", 4); } }  /* *---------------------------------------------------------------------- * * ExtractWinRoot -- * * Matches the root portion of a Windows path and appends it to the * specified Tcl_DString. * * Results: * Returns the position in the path immediately after the root including * any trailing slashes. Appends a cleaned up version of the root to the * Tcl_DString at the specified offest. * * Side effects: * Modifies the specified Tcl_DString. * *---------------------------------------------------------------------- */ static const char * ExtractWinRoot( const char *path, /* Path to parse. */ Tcl_DString *resultPtr, /* Buffer to hold result. */ int offset, /* Offset in buffer where result should be * stored. */ Tcl_PathType *typePtr) /* Where to store pathType result */ { int extended = 0; if ( (path[0] == '/' || path[0] == '\\') && (path[1] == '/' || path[1] == '\\') && (path[2] == '?') && (path[3] == '/' || path[3] == '\\')) { extended = 1; path = path + 4; if (path[0] == 'U' && path[1] == 'N' && path[2] == 'C' && (path[3] == '/' || path[3] == '\\')) { extended = 2; path = path + 4; } } if (path[0] == '/' || path[0] == '\\') { /* * Might be a UNC or Vol-Relative path. */ const char *host, *share, *tail; int hlen, slen; if (path[1] != '/' && path[1] != '\\') { SetResultLength(resultPtr, offset, extended); *typePtr = TCL_PATH_VOLUME_RELATIVE; Tcl_DStringAppend(resultPtr, "/", 1); return &path[1]; } host = &path[2]; /* * Skip separators. */ while (host[0] == '/' || host[0] == '\\') { host++; } for (hlen = 0; host[hlen];hlen++) { if (host[hlen] == '/' || host[hlen] == '\\') { break; } } if (host[hlen] == 0 || host[hlen+1] == 0) { /* * The path given is simply of the form '/foo', '//foo', * '/////foo' or the same with backslashes. If there is exactly * one leading '/' the path is volume relative (see filename man * page). If there are more than one, we are simply assuming they * are superfluous and we trim them away. (An alternative * interpretation would be that it is a host name, but we have * been documented that that is not the case). */ *typePtr = TCL_PATH_VOLUME_RELATIVE; Tcl_DStringAppend(resultPtr, "/", 1); return &path[2]; } SetResultLength(resultPtr, offset, extended); share = &host[hlen]; /* * Skip separators. */ while (share[0] == '/' || share[0] == '\\') { share++; } for (slen=0; share[slen]; slen++) { if (share[slen] == '/' || share[slen] == '\\') { break; } } Tcl_DStringAppend(resultPtr, "//", 2); Tcl_DStringAppend(resultPtr, host, hlen); Tcl_DStringAppend(resultPtr, "/", 1); Tcl_DStringAppend(resultPtr, share, slen); tail = &share[slen]; /* * Skip separators. */ while (tail[0] == '/' || tail[0] == '\\') { tail++; } *typePtr = TCL_PATH_ABSOLUTE; return tail; } else if (*path && path[1] == ':') { /* * Might be a drive separator. */ SetResultLength(resultPtr, offset, extended); if (path[2] != '/' && path[2] != '\\') { *typePtr = TCL_PATH_VOLUME_RELATIVE; Tcl_DStringAppend(resultPtr, path, 2); return &path[2]; } else { char *tail = (char*)&path[3]; /* * Skip separators. */ while (*tail && (tail[0] == '/' || tail[0] == '\\')) { tail++; } *typePtr = TCL_PATH_ABSOLUTE; Tcl_DStringAppend(resultPtr, path, 2); Tcl_DStringAppend(resultPtr, "/", 1); return tail; } } else { int abs = 0; /* * Check for Windows devices. */ if ((path[0] == 'c' || path[0] == 'C') && (path[1] == 'o' || path[1] == 'O')) { if ((path[2] == 'm' || path[2] == 'M') && path[3] >= '1' && path[3] <= '4') { /* * May have match for 'com[1-4]:?', which is a serial port. */ if (path[4] == '\0') { abs = 4; } else if (path [4] == ':' && path[5] == '\0') { abs = 5; } } else if ((path[2] == 'n' || path[2] == 'N') && path[3] == '\0') { /* * Have match for 'con'. */ abs = 3; } } else if ((path[0] == 'l' || path[0] == 'L') && (path[1] == 'p' || path[1] == 'P') && (path[2] == 't' || path[2] == 'T')) { if (path[3] >= '1' && path[3] <= '3') { /* * May have match for 'lpt[1-3]:?' */ if (path[4] == '\0') { abs = 4; } else if (path [4] == ':' && path[5] == '\0') { abs = 5; } } } else if ((path[0] == 'p' || path[0] == 'P') && (path[1] == 'r' || path[1] == 'R') && (path[2] == 'n' || path[2] == 'N') && path[3] == '\0') { /* * Have match for 'prn'. */ abs = 3; } else if ((path[0] == 'n' || path[0] == 'N') && (path[1] == 'u' || path[1] == 'U') && (path[2] == 'l' || path[2] == 'L') && path[3] == '\0') { /* * Have match for 'nul'. */ abs = 3; } else if ((path[0] == 'a' || path[0] == 'A') && (path[1] == 'u' || path[1] == 'U') && (path[2] == 'x' || path[2] == 'X') && path[3] == '\0') { /* * Have match for 'aux'. */ abs = 3; } if (abs != 0) { *typePtr = TCL_PATH_ABSOLUTE; SetResultLength(resultPtr, offset, extended); Tcl_DStringAppend(resultPtr, path, abs); return path + abs; } } /* * Anything else is treated as relative. */ *typePtr = TCL_PATH_RELATIVE; return path; }  /* *---------------------------------------------------------------------- * * Tcl_GetPathType -- * * Determines whether a given path is relative to the current directory, * relative to the current volume, or absolute. * * The objectified Tcl_FSGetPathType should be used in preference to this * function (as you can see below, this is just a wrapper around that * other function). * * Results: * Returns one of TCL_PATH_ABSOLUTE, TCL_PATH_RELATIVE, or * TCL_PATH_VOLUME_RELATIVE. * * Side effects: * None. * *---------------------------------------------------------------------- */ Tcl_PathType Tcl_GetPathType( const char *path) { Tcl_PathType type; Tcl_Obj *tempObj = Tcl_NewStringObj(path,-1); Tcl_IncrRefCount(tempObj); type = Tcl_FSGetPathType(tempObj); Tcl_DecrRefCount(tempObj); return type; }  /* *---------------------------------------------------------------------- * * TclpGetNativePathType -- * * Determines whether a given path is relative to the current directory, * relative to the current volume, or absolute, but ONLY FOR THE NATIVE * FILESYSTEM. This function is called from tclIOUtil.c (but needs to be * here due to its dependence on static variables/functions in this * file). The exported function Tcl_FSGetPathType should be used by * extensions. * * Note that '~' paths are always considered TCL_PATH_ABSOLUTE, even * though expanding the '~' could lead to any possible path type. This * function should therefore be considered a low-level, string * manipulation function only -- it doesn't actually do any expansion in * making its determination. * * Results: * Returns one of TCL_PATH_ABSOLUTE, TCL_PATH_RELATIVE, or * TCL_PATH_VOLUME_RELATIVE. * * Side effects: * None. * *---------------------------------------------------------------------- */ Tcl_PathType TclpGetNativePathType( Tcl_Obj *pathPtr, /* Native path of interest */ int *driveNameLengthPtr, /* Returns length of drive, if non-NULL and * path was absolute */ Tcl_Obj **driveNameRef) { Tcl_PathType type = TCL_PATH_ABSOLUTE; int pathLen; char *path = Tcl_GetStringFromObj(pathPtr, &pathLen); if (path[0] == '~') { /* * This case is common to all platforms. Paths that begin with ~ are * absolute. */ if (driveNameLengthPtr != NULL) { char *end = path + 1; while ((*end != '\0') && (*end != '/')) { end++; } *driveNameLengthPtr = end - path; } } else { switch (tclPlatform) { case TCL_PLATFORM_UNIX: { char *origPath = path; /* * Paths that begin with / are absolute. */ #ifdef __QNX__ /* * Check for QNX //<node id> prefix */ if (*path && (pathLen > 3) && (path[0] == '/') && (path[1] == '/') && isdigit(UCHAR(path[2]))) { path += 3; while (isdigit(UCHAR(*path))) { ++path; } } #endif if (path[0] == '/') { if (driveNameLengthPtr != NULL) { /* * We need this addition in case the QNX code was used. */ *driveNameLengthPtr = (1 + path - origPath); } } else { type = TCL_PATH_RELATIVE; } break; } case TCL_PLATFORM_WINDOWS: { Tcl_DString ds; const char *rootEnd; Tcl_DStringInit(&ds); rootEnd = ExtractWinRoot(path, &ds, 0, &type); if ((rootEnd != path) && (driveNameLengthPtr != NULL)) { *driveNameLengthPtr = rootEnd - path; if (driveNameRef != NULL) { *driveNameRef = Tcl_NewStringObj(Tcl_DStringValue(&ds), Tcl_DStringLength(&ds)); Tcl_IncrRefCount(*driveNameRef); } } Tcl_DStringFree(&ds); break; } } } return type; }  /* *--------------------------------------------------------------------------- * * TclpNativeSplitPath -- * * This function takes the given Tcl_Obj, which should be a valid path, * and returns a Tcl List object containing each segment of that path as * an element. * * Note this function currently calls the older Split(Plat)Path * functions, which require more memory allocation than is desirable. * * Results: * Returns list object with refCount of zero. If the passed in lenPtr is * non-NULL, we use it to return the number of elements in the returned * list. * * Side effects: * None. * *--------------------------------------------------------------------------- */ Tcl_Obj * TclpNativeSplitPath( Tcl_Obj *pathPtr, /* Path to split. */ int *lenPtr) /* int to store number of path elements. */ { Tcl_Obj *resultPtr = NULL; /* Needed only to prevent gcc warnings. */ /* * Perform platform specific splitting. */ switch (tclPlatform) { case TCL_PLATFORM_UNIX: resultPtr = SplitUnixPath(Tcl_GetString(pathPtr)); break; case TCL_PLATFORM_WINDOWS: resultPtr = SplitWinPath(Tcl_GetString(pathPtr)); break; } /* * Compute the number of elements in the result. */ if (lenPtr != NULL) { Tcl_ListObjLength(NULL, resultPtr, lenPtr); } return resultPtr; }  /* *---------------------------------------------------------------------- * * Tcl_SplitPath -- * * Split a path into a list of path components. The first element of the * list will have the same path type as the original path. * * Results: * Returns a standard Tcl result. The interpreter result contains a list * of path components. *argvPtr will be filled in with the address of an * array whose elements point to the elements of path, in order. * *argcPtr will get filled in with the number of valid elements in the * array. A single block of memory is dynamically allocated to hold both * the argv array and a copy of the path elements. The caller must * eventually free this memory by calling ckfree() on *argvPtr. Note: * *argvPtr and *argcPtr are only modified if the procedure returns * normally. * * Side effects: * Allocates memory. * *---------------------------------------------------------------------- */ void Tcl_SplitPath( const char *path, /* Pointer to string containing a path. */ int *argcPtr, /* Pointer to location to fill in with the * number of elements in the path. */ const char ***argvPtr) /* Pointer to place to store pointer to array * of pointers to path elements. */ { Tcl_Obj *resultPtr = NULL; /* Needed only to prevent gcc warnings. */ Tcl_Obj *tmpPtr, *eltPtr; int i, size, len; char *p, *str; /* * Perform the splitting, using objectified, vfs-aware code. */ tmpPtr = Tcl_NewStringObj(path, -1); Tcl_IncrRefCount(tmpPtr); resultPtr = Tcl_FSSplitPath(tmpPtr, argcPtr); Tcl_IncrRefCount(resultPtr); Tcl_DecrRefCount(tmpPtr); /* * Calculate space required for the result. */ size = 1; for (i = 0; i < *argcPtr; i++) { Tcl_ListObjIndex(NULL, resultPtr, i, &eltPtr); Tcl_GetStringFromObj(eltPtr, &len); size += len + 1; } /* * Allocate a buffer large enough to hold the contents of all of the list * plus the argv pointers and the terminating NULL pointer. */ *argvPtr = (const char **) ckalloc((unsigned) ((((*argcPtr) + 1) * sizeof(char *)) + size)); /* * Position p after the last argv pointer and copy the contents of the * list in, piece by piece. */ p = (char *) &(*argvPtr)[(*argcPtr) + 1]; for (i = 0; i < *argcPtr; i++) { Tcl_ListObjIndex(NULL, resultPtr, i, &eltPtr); str = Tcl_GetStringFromObj(eltPtr, &len); memcpy(p, str, (size_t) len+1); p += len+1; } /* * Now set up the argv pointers. */ p = (char *) &(*argvPtr)[(*argcPtr) + 1]; for (i = 0; i < *argcPtr; i++) { (*argvPtr)[i] = p; for (; *(p++)!='\0'; ); } (*argvPtr)[i] = NULL; /* * Free the result ptr given to us by Tcl_FSSplitPath */ Tcl_DecrRefCount(resultPtr); }  /* *---------------------------------------------------------------------- * * SplitUnixPath -- * * This routine is used by Tcl_(FS)SplitPath to handle splitting Unix * paths. * * Results: * Returns a newly allocated Tcl list object. * * Side effects: * None. * *---------------------------------------------------------------------- */ static Tcl_Obj * SplitUnixPath( const char *path) /* Pointer to string containing a path. */ { int length; const char *p, *elementStart; Tcl_Obj *result = Tcl_NewObj(); /* * Deal with the root directory as a special case. */ #ifdef __QNX__ /* * Check for QNX //<node id> prefix */ if ((path[0] == '/') && (path[1] == '/') && isdigit(UCHAR(path[2]))) { /* INTL: digit */ path += 3; while (isdigit(UCHAR(*path))) { /* INTL: digit */ ++path; } } #endif if (path[0] == '/') { Tcl_ListObjAppendElement(NULL, result, Tcl_NewStringObj("/",1)); p = path+1; } else { p = path; } /* * Split on slashes. Embedded elements that start with tilde will be * prefixed with "./" so they are not affected by tilde substitution. */ for (;;) { elementStart = p; while ((*p != '\0') && (*p != '/')) { p++; } length = p - elementStart; if (length > 0) { Tcl_Obj *nextElt; if ((elementStart[0] == '~') && (elementStart != path)) { TclNewLiteralStringObj(nextElt, "./"); Tcl_AppendToObj(nextElt, elementStart, length); } else { nextElt = Tcl_NewStringObj(elementStart, length); } Tcl_ListObjAppendElement(NULL, result, nextElt); } if (*p++ == '\0') { break; } } return result; }  /* *---------------------------------------------------------------------- * * SplitWinPath -- * * This routine is used by Tcl_(FS)SplitPath to handle splitting Windows * paths. * * Results: * Returns a newly allocated Tcl list object. * * Side effects: * None. * *---------------------------------------------------------------------- */ static Tcl_Obj * SplitWinPath( const char *path) /* Pointer to string containing a path. */ { int length; const char *p, *elementStart; Tcl_PathType type = TCL_PATH_ABSOLUTE; Tcl_DString buf; Tcl_Obj *result = Tcl_NewObj(); Tcl_DStringInit(&buf); p = ExtractWinRoot(path, &buf, 0, &type); /* * Terminate the root portion, if we matched something. */ if (p != path) { Tcl_ListObjAppendElement(NULL, result, Tcl_NewStringObj( Tcl_DStringValue(&buf), Tcl_DStringLength(&buf))); } Tcl_DStringFree(&buf); /* * Split on slashes. Embedded elements that start with tilde or a drive * letter will be prefixed with "./" so they are not affected by tilde * substitution. */ do { elementStart = p; while ((*p != '\0') && (*p != '/') && (*p != '\\')) { p++; } length = p - elementStart; if (length > 0) { Tcl_Obj *nextElt; if ((elementStart != path) && ((elementStart[0] == '~') || (isalpha(UCHAR(elementStart[0])) && elementStart[1] == ':'))) { TclNewLiteralStringObj(nextElt, "./"); Tcl_AppendToObj(nextElt, elementStart, length); } else { nextElt = Tcl_NewStringObj(elementStart, length); } Tcl_ListObjAppendElement(NULL, result, nextElt); } } while (*p++ != '\0'); return result; }  /* *--------------------------------------------------------------------------- * * Tcl_FSJoinToPath -- * * This function takes the given object, which should usually be a valid * path or NULL, and joins onto it the array of paths segments given. * * The objects in the array given will temporarily have their refCount * increased by one, and then decreased by one when this function exits * (which means if they had zero refCount when we were called, they will * be freed). * * Results: * Returns object owned by the caller (which should increment its * refCount) - typically an object with refCount of zero. * * Side effects: * None. * *--------------------------------------------------------------------------- */ Tcl_Obj * Tcl_FSJoinToPath( Tcl_Obj *pathPtr, /* Valid path or NULL. */ int objc, /* Number of array elements to join */ Tcl_Obj *const objv[]) /* Path elements to join. */ { int i; Tcl_Obj *lobj, *ret; if (pathPtr == NULL) { lobj = Tcl_NewListObj(0, NULL); } else { lobj = Tcl_NewListObj(1, &pathPtr); } for (i = 0; i<objc;i++) { Tcl_ListObjAppendElement(NULL, lobj, objv[i]); } ret = Tcl_FSJoinPath(lobj, -1); /* * It is possible that 'ret' is just a member of the list and is therefore * going to be freed here. Therefore we must adjust the refCount manually. * (It would be better if we changed the documentation of this function * and Tcl_FSJoinPath so that the returned object already has a refCount * for the caller, hence avoiding these subtleties (and code ugliness)). */ Tcl_IncrRefCount(ret); Tcl_DecrRefCount(lobj); ret->refCount--; return ret; }  /* *--------------------------------------------------------------------------- * * TclpNativeJoinPath -- * * 'prefix' is absolute, 'joining' is relative to prefix. * * Results: * modifies prefix * * Side effects: * None. * *--------------------------------------------------------------------------- */ void TclpNativeJoinPath( Tcl_Obj *prefix, char *joining) { int length, needsSep; char *dest, *p, *start; start = Tcl_GetStringFromObj(prefix, &length); /* * Remove the ./ from tilde prefixed elements, and drive-letter prefixed * elements on Windows, unless it is the first component. */ p = joining; if (length != 0) { if ((p[0] == '.') && (p[1] == '/') && ((p[2] == '~') || (tclPlatform==TCL_PLATFORM_WINDOWS && isalpha(UCHAR(p[2])) && (p[3] == ':')))) { p += 2; } } if (*p == '\0') { return; } switch (tclPlatform) { case TCL_PLATFORM_UNIX: /* * Append a separator if needed. */ if (length > 0 && (start[length-1] != '/')) { Tcl_AppendToObj(prefix, "/", 1); length++; } needsSep = 0; /* * Append the element, eliminating duplicate and trailing slashes. */ Tcl_SetObjLength(prefix, length + (int) strlen(p)); dest = Tcl_GetString(prefix) + length; for (; *p != '\0'; p++) { if (*p == '/') { while (p[1] == '/') { p++; } if (p[1] != '\0' && needsSep) { *dest++ = '/'; } } else { *dest++ = *p; needsSep = 1; } } length = dest - Tcl_GetString(prefix); Tcl_SetObjLength(prefix, length); break; case TCL_PLATFORM_WINDOWS: /* * Check to see if we need to append a separator. */ if ((length > 0) && (start[length-1] != '/') && (start[length-1] != ':')) { Tcl_AppendToObj(prefix, "/", 1); length++; } needsSep = 0; /* * Append the element, eliminating duplicate and trailing slashes. */ Tcl_SetObjLength(prefix, length + (int) strlen(p)); dest = Tcl_GetString(prefix) + length; for (; *p != '\0'; p++) { if ((*p == '/') || (*p == '\\')) { while ((p[1] == '/') || (p[1] == '\\')) { p++; } if ((p[1] != '\0') && needsSep) { *dest++ = '/'; } } else { *dest++ = *p; needsSep = 1; } } length = dest - Tcl_GetString(prefix); Tcl_SetObjLength(prefix, length); break; } return; }  /* *---------------------------------------------------------------------- * * Tcl_JoinPath -- * * Combine a list of paths in a platform specific manner. The function * 'Tcl_FSJoinPath' should be used in preference where possible. * * Results: * Appends the joined path to the end of the specified Tcl_DString * returning a pointer to the resulting string. Note that the * Tcl_DString must already be initialized. * * Side effects: * Modifies the Tcl_DString. * *---------------------------------------------------------------------- */ char * Tcl_JoinPath( int argc, const char *const *argv, Tcl_DString *resultPtr) /* Pointer to previously initialized DString */ { int i, len; Tcl_Obj *listObj = Tcl_NewObj(); Tcl_Obj *resultObj; char *resultStr; /* * Build the list of paths. */ for (i = 0; i < argc; i++) { Tcl_ListObjAppendElement(NULL, listObj, Tcl_NewStringObj(argv[i], -1)); } /* * Ask the objectified code to join the paths. */ Tcl_IncrRefCount(listObj); resultObj = Tcl_FSJoinPath(listObj, argc); Tcl_IncrRefCount(resultObj); Tcl_DecrRefCount(listObj); /* * Store the result. */ resultStr = Tcl_GetStringFromObj(resultObj, &len); Tcl_DStringAppend(resultPtr, resultStr, len); Tcl_DecrRefCount(resultObj); /* * Return a pointer to the result. */ return Tcl_DStringValue(resultPtr); }  /* *--------------------------------------------------------------------------- * * Tcl_TranslateFileName -- * * Converts a file name into a form usable by the native system * interfaces. If the name starts with a tilde, it will produce a name * where the tilde and following characters have been replaced by the * home directory location for the named user. * * Results: * The return value is a pointer to a string containing the name after * tilde substitution. If there was no tilde substitution, the return * value is a pointer to a copy of the original string. If there was an * error in processing the name, then an error message is left in the * interp's result (if interp was not NULL) and the return value is NULL. * Space for the return value is allocated in bufferPtr; the caller must * call Tcl_DStringFree() to free the space if the return value was not * NULL. * * Side effects: * None. * *---------------------------------------------------------------------- */ char * Tcl_TranslateFileName( Tcl_Interp *interp, /* Interpreter in which to store error message * (if necessary). */ const char *name, /* File name, which may begin with "~" (to * indicate current user's home directory) or * "~<user>" (to indicate any user's home * directory). */ Tcl_DString *bufferPtr) /* Uninitialized or free DString filled with * name after tilde substitution. */ { Tcl_Obj *path = Tcl_NewStringObj(name, -1); Tcl_Obj *transPtr; Tcl_IncrRefCount(path); transPtr = Tcl_FSGetTranslatedPath(interp, path); if (transPtr == NULL) { Tcl_DecrRefCount(path); return NULL; } Tcl_DStringInit(bufferPtr); Tcl_DStringAppend(bufferPtr, Tcl_GetString(transPtr), -1); Tcl_DecrRefCount(path); Tcl_DecrRefCount(transPtr); /* * Convert forward slashes to backslashes in Windows paths because some * system interfaces don't accept forward slashes. */ if (tclPlatform == TCL_PLATFORM_WINDOWS) { register char *p; for (p = Tcl_DStringValue(bufferPtr); *p != '\0'; p++) { if (*p == '/') { *p = '\\'; } } } return Tcl_DStringValue(bufferPtr); }  /* *---------------------------------------------------------------------- * * TclGetExtension -- * * This function returns a pointer to the beginning of the extension part * of a file name. * * Results: * Returns a pointer into name which indicates where the extension * starts. If there is no extension, returns NULL. * * Side effects: * None. * *---------------------------------------------------------------------- */ const char * TclGetExtension( const char *name) /* File name to parse. */ { const char *p, *lastSep; /* * First find the last directory separator. */ lastSep = NULL; /* Needed only to prevent gcc warnings. */ switch (tclPlatform) { case TCL_PLATFORM_UNIX: lastSep = strrchr(name, '/'); break; case TCL_PLATFORM_WINDOWS: lastSep = NULL; for (p = name; *p != '\0'; p++) { if (strchr("/\\:", *p) != NULL) { lastSep = p; } } break; } p = strrchr(name, '.'); if ((p != NULL) && (lastSep != NULL) && (lastSep > p)) { p = NULL; } /* * In earlier versions, we used to back up to the first period in a series * so that "foo..o" would be split into "foo" and "..o". This is a * confusing and usually incorrect behavior, so now we split at the last * period in the name. */ return p; }  /* *---------------------------------------------------------------------- * * DoTildeSubst -- * * Given a string following a tilde, this routine returns the * corresponding home directory. * * Results: * The result is a pointer to a static string containing the home * directory in native format. If there was an error in processing the * substitution, then an error message is left in the interp's result and * the return value is NULL. On success, the results are appended to * resultPtr, and the contents of resultPtr are returned. * * Side effects: * Information may be left in resultPtr. * *---------------------------------------------------------------------- */ static const char * DoTildeSubst( Tcl_Interp *interp, /* Interpreter in which to store error message * (if necessary). */ const char *user, /* Name of user whose home directory should be * substituted, or "" for current user. */ Tcl_DString *resultPtr) /* Initialized DString filled with name after * tilde substitution. */ { const char *dir; if (*user == '\0') { Tcl_DString dirString; dir = TclGetEnv("HOME", &dirString); if (dir == NULL) { if (interp) { Tcl_ResetResult(interp); Tcl_AppendResult(interp, "couldn't find HOME environment " "variable to expand path", NULL); } return NULL; } Tcl_JoinPath(1, &dir, resultPtr); Tcl_DStringFree(&dirString); } else if (TclpGetUserHome(user, resultPtr) == NULL) { if (interp) { Tcl_ResetResult(interp); Tcl_AppendResult(interp, "user \"", user, "\" doesn't exist", NULL); } return NULL; } return Tcl_DStringValue(resultPtr); }  /* *---------------------------------------------------------------------- * * Tcl_GlobObjCmd -- * * This procedure is invoked to process the "glob" Tcl command. See the * user documentation for details on what it does. * * Results: * A standard Tcl result. * * Side effects: * See the user documentation. * *---------------------------------------------------------------------- */ /* ARGSUSED */ int Tcl_GlobObjCmd( ClientData dummy, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int objc, /* Number of arguments. */ Tcl_Obj *const objv[]) /* Argument objects. */ { int index, i, globFlags, length, join, dir, result; char *string; const char *separators; Tcl_Obj *typePtr, *resultPtr, *look; Tcl_Obj *pathOrDir = NULL; Tcl_DString prefix; static const char *options[] = { "-directory", "-join", "-nocomplain", "-path", "-tails", "-types", "--", NULL }; enum options { GLOB_DIR, GLOB_JOIN, GLOB_NOCOMPLAIN, GLOB_PATH, GLOB_TAILS, GLOB_TYPE, GLOB_LAST }; enum pathDirOptions {PATH_NONE = -1 , PATH_GENERAL = 0, PATH_DIR = 1}; Tcl_GlobTypeData *globTypes = NULL; globFlags = 0; join = 0; dir = PATH_NONE; typePtr = NULL; for (i = 1; i < objc; i++) { if (Tcl_GetIndexFromObj(interp, objv[i], options, "option", 0, &index) != TCL_OK) { string = Tcl_GetStringFromObj(objv[i], &length); if (string[0] == '-') { /* * It looks like the command contains an option so signal an * error. */ return TCL_ERROR; } else { /* * This clearly isn't an option; assume it's the first glob * pattern. We must clear the error. */ Tcl_ResetResult(interp); break; } } switch (index) { case GLOB_NOCOMPLAIN: /* -nocomplain */ globFlags |= TCL_GLOBMODE_NO_COMPLAIN; break; case GLOB_DIR: /* -dir */ if (i == (objc-1)) { Tcl_SetObjResult(interp, Tcl_NewStringObj( "missing argument to \"-directory\"", -1)); return TCL_ERROR; } if (dir != PATH_NONE) { Tcl_SetObjResult(interp, Tcl_NewStringObj( "\"-directory\" cannot be used with \"-path\"", -1)); return TCL_ERROR; } dir = PATH_DIR; globFlags |= TCL_GLOBMODE_DIR; pathOrDir = objv[i+1]; i++; break; case GLOB_JOIN: /* -join */ join = 1; break; case GLOB_TAILS: /* -tails */ globFlags |= TCL_GLOBMODE_TAILS; break; case GLOB_PATH: /* -path */ if (i == (objc-1)) { Tcl_SetObjResult(interp, Tcl_NewStringObj( "missing argument to \"-path\"", -1)); return TCL_ERROR; } if (dir != PATH_NONE) { Tcl_SetObjResult(interp, Tcl_NewStringObj( "\"-path\" cannot be used with \"-directory\"", -1)); return TCL_ERROR; } dir = PATH_GENERAL; pathOrDir = objv[i+1]; i++; break; case GLOB_TYPE: /* -types */ if (i == (objc-1)) { Tcl_SetObjResult(interp, Tcl_NewStringObj( "missing argument to \"-types\"", -1)); return TCL_ERROR; } typePtr = objv[i+1]; if (Tcl_ListObjLength(interp, typePtr, &length) != TCL_OK) { return TCL_ERROR; } i++; break; case GLOB_LAST: /* -- */ i++; goto endOfForLoop; } } endOfForLoop: if (objc - i < 1) { Tcl_WrongNumArgs(interp, 1, objv, "?switches? name ?name ...?"); return TCL_ERROR; } if ((globFlags & TCL_GLOBMODE_TAILS) && (pathOrDir == NULL)) { Tcl_AppendResult(interp, "\"-tails\" must be used with either " "\"-directory\" or \"-path\"", NULL); return TCL_ERROR; } separators = NULL; /* lint. */ switch (tclPlatform) { case TCL_PLATFORM_UNIX: separators = "/"; break; case TCL_PLATFORM_WINDOWS: separators = "/\\:"; break; } if (dir == PATH_GENERAL) { int pathlength; char *last; char *first = Tcl_GetStringFromObj(pathOrDir,&pathlength); /* * Find the last path separator in the path */ last = first + pathlength; for (; last != first; last--) { if (strchr(separators, *(last-1)) != NULL) { break; } } if (last == first + pathlength) { /* * It's really a directory. */ dir = PATH_DIR; } else { Tcl_DString pref; char *search, *find; Tcl_DStringInit(&pref); if (last == first) { /* * The whole thing is a prefix. This means we must remove any * 'tails' flag too, since it is irrelevant now (the same * effect will happen without it), but in particular its use * in TclGlob requires a non-NULL pathOrDir. */ Tcl_DStringAppend(&pref, first, -1); globFlags &= ~TCL_GLOBMODE_TAILS; pathOrDir = NULL; } else { /* * Have to split off the end. */ Tcl_DStringAppend(&pref, last, first+pathlength-last); pathOrDir = Tcl_NewStringObj(first, last-first-1); /* * We must ensure that we haven't cut off too much, and turned * a valid path like '/' or 'C:/' into an incorrect path like * '' or 'C:'. The way we do this is to add a separator if * there are none presently in the prefix. */ if (strpbrk(Tcl_GetString(pathOrDir), "\\/") == NULL) { Tcl_AppendToObj(pathOrDir, last-1, 1); } } /* * Need to quote 'prefix'. */ Tcl_DStringInit(&prefix); search = Tcl_DStringValue(&pref); while ((find = (strpbrk(search, "\\[]*?{}"))) != NULL) { Tcl_DStringAppend(&prefix, search, find-search); Tcl_DStringAppend(&prefix, "\\", 1); Tcl_DStringAppend(&prefix, find, 1); search = find+1; if (*search == '\0') { break; } } if (*search != '\0') { Tcl_DStringAppend(&prefix, search, -1); } Tcl_DStringFree(&pref); } } if (pathOrDir != NULL) { Tcl_IncrRefCount(pathOrDir); } if (typePtr != NULL) { /* * The rest of the possible type arguments (except 'd') are platform * specific. We don't complain when they are used on an incompatible * platform. */ Tcl_ListObjLength(interp, typePtr, &length); globTypes = (Tcl_GlobTypeData*) TclStackAlloc(interp,sizeof(Tcl_GlobTypeData)); globTypes->type = 0; globTypes->perm = 0; globTypes->macType = NULL; globTypes->macCreator = NULL; while (--length >= 0) { int len; char *str; Tcl_ListObjIndex(interp, typePtr, length, &look); str = Tcl_GetStringFromObj(look, &len); if (strcmp("readonly", str) == 0) { globTypes->perm |= TCL_GLOB_PERM_RONLY; } else if (strcmp("hidden", str) == 0) { globTypes->perm |= TCL_GLOB_PERM_HIDDEN; } else if (len == 1) { switch (str[0]) { case 'r': globTypes->perm |= TCL_GLOB_PERM_R; break; case 'w': globTypes->perm |= TCL_GLOB_PERM_W; break; case 'x': globTypes->perm |= TCL_GLOB_PERM_X; break; case 'b': globTypes->type |= TCL_GLOB_TYPE_BLOCK; break; case 'c': globTypes->type |= TCL_GLOB_TYPE_CHAR; break; case 'd': globTypes->type |= TCL_GLOB_TYPE_DIR; break; case 'p': globTypes->type |= TCL_GLOB_TYPE_PIPE; break; case 'f': globTypes->type |= TCL_GLOB_TYPE_FILE; break; case 'l': globTypes->type |= TCL_GLOB_TYPE_LINK; break; case 's': globTypes->type |= TCL_GLOB_TYPE_SOCK; break; default: goto badTypesArg; } } else if (len == 4) { /* * This is assumed to be a MacOS file type. */ if (globTypes->macType != NULL) { goto badMacTypesArg; } globTypes->macType = look; Tcl_IncrRefCount(look); } else { Tcl_Obj* item; if ((Tcl_ListObjLength(NULL, look, &len) == TCL_OK) && (len == 3)) { Tcl_ListObjIndex(interp, look, 0, &item); if (!strcmp("macintosh", Tcl_GetString(item))) { Tcl_ListObjIndex(interp, look, 1, &item); if (!strcmp("type", Tcl_GetString(item))) { Tcl_ListObjIndex(interp, look, 2, &item); if (globTypes->macType != NULL) { goto badMacTypesArg; } globTypes->macType = item; Tcl_IncrRefCount(item); continue; } else if (!strcmp("creator", Tcl_GetString(item))) { Tcl_ListObjIndex(interp, look, 2, &item); if (globTypes->macCreator != NULL) { goto badMacTypesArg; } globTypes->macCreator = item; Tcl_IncrRefCount(item); continue; } } } /* * Error cases. We reset the 'join' flag to zero, since we * haven't yet made use of it. */ badTypesArg: TclNewObj(resultPtr); Tcl_AppendToObj(resultPtr, "bad argument to \"-types\": ", -1); Tcl_AppendObjToObj(resultPtr, look); Tcl_SetObjResult(interp, resultPtr); result = TCL_ERROR; join = 0; goto endOfGlob; badMacTypesArg: Tcl_SetObjResult(interp, Tcl_NewStringObj( "only one MacOS type or creator argument" " to \"-types\" allowed", -1)); result = TCL_ERROR; join = 0; goto endOfGlob; } } } /* * Now we perform the actual glob below. This may involve joining together * the pattern arguments, dealing with particular file types etc. We use a * 'goto' to ensure we free any memory allocated along the way. */ objc -= i; objv += i; result = TCL_OK; if (join) { if (dir != PATH_GENERAL) { Tcl_DStringInit(&prefix); } for (i = 0; i < objc; i++) { string = Tcl_GetStringFromObj(objv[i], &length); Tcl_DStringAppend(&prefix, string, length); if (i != objc -1) { Tcl_DStringAppend(&prefix, separators, 1); } } if (TclGlob(interp, Tcl_DStringValue(&prefix), pathOrDir, globFlags, globTypes) != TCL_OK) { result = TCL_ERROR; goto endOfGlob; } } else if (dir == PATH_GENERAL) { Tcl_DString str; for (i = 0; i < objc; i++) { Tcl_DStringInit(&str); if (dir == PATH_GENERAL) { Tcl_DStringAppend(&str, Tcl_DStringValue(&prefix), Tcl_DStringLength(&prefix)); } string = Tcl_GetStringFromObj(objv[i], &length); Tcl_DStringAppend(&str, string, length); if (TclGlob(interp, Tcl_DStringValue(&str), pathOrDir, globFlags, globTypes) != TCL_OK) { result = TCL_ERROR; Tcl_DStringFree(&str); goto endOfGlob; } } Tcl_DStringFree(&str); } else { for (i = 0; i < objc; i++) { string = Tcl_GetString(objv[i]); if (TclGlob(interp, string, pathOrDir, globFlags, globTypes) != TCL_OK) { result = TCL_ERROR; goto endOfGlob; } } } if ((globFlags & TCL_GLOBMODE_NO_COMPLAIN) == 0) { if (Tcl_ListObjLength(interp, Tcl_GetObjResult(interp), &length) != TCL_OK) { /* * This should never happen. Maybe we should be more dramatic. */ result = TCL_ERROR; goto endOfGlob; } if (length == 0) { Tcl_AppendResult(interp, "no files matched glob pattern", (join || (objc == 1)) ? " \"" : "s \"", NULL); if (join) { Tcl_AppendResult(interp, Tcl_DStringValue(&prefix), NULL); } else { const char *sep = ""; for (i = 0; i < objc; i++) { string = Tcl_GetString(objv[i]); Tcl_AppendResult(interp, sep, string, NULL); sep = " "; } } Tcl_AppendResult(interp, "\"", NULL); result = TCL_ERROR; } } endOfGlob: if (join || (dir == PATH_GENERAL)) { Tcl_DStringFree(&prefix); } if (pathOrDir != NULL) { Tcl_DecrRefCount(pathOrDir); } if (globTypes != NULL) { if (globTypes->macType != NULL) { Tcl_DecrRefCount(globTypes->macType); } if (globTypes->macCreator != NULL) { Tcl_DecrRefCount(globTypes->macCreator); } TclStackFree(interp, globTypes); } return result; }  /* *---------------------------------------------------------------------- * * TclGlob -- * * This procedure prepares arguments for the DoGlob call. It sets the * separator string based on the platform, performs * tilde substitution, * and calls DoGlob. * * The interpreter's result, on entry to this function, must be a valid * Tcl list (e.g. it could be empty), since we will lappend any new * results to that list. If it is not a valid list, this function will * fail to do anything very meaningful. * * Note that if globFlags contains 'TCL_GLOBMODE_TAILS' then pathPrefix * cannot be NULL (it is only allowed with -dir or -path). * * Results: * The return value is a standard Tcl result indicating whether an error * occurred in globbing. After a normal return the result in interp (set * by DoGlob) holds all of the file names given by the pattern and * pathPrefix arguments. After an error the result in interp will hold * an error message. * * Side effects: * The 'pattern' is written to. * *---------------------------------------------------------------------- */ /* ARGSUSED */ int TclGlob( Tcl_Interp *interp, /* Interpreter for returning error message or * appending list of matching file names. */ char *pattern, /* Glob pattern to match. Must not refer to a * static string. */ Tcl_Obj *pathPrefix, /* Path prefix to glob pattern, if non-null, * which is considered literally. */ int globFlags, /* Stores or'ed combination of flags */ Tcl_GlobTypeData *types) /* Struct containing acceptable types. May be * NULL. */ { const char *separators; const char *head; char *tail, *start; int result; Tcl_Obj *filenamesObj, *savedResultObj; separators = NULL; /* lint. */ switch (tclPlatform) { case TCL_PLATFORM_UNIX: separators = "/"; break; case TCL_PLATFORM_WINDOWS: separators = "/\\:"; break; } if (pathPrefix == NULL) { char c; Tcl_DString buffer; Tcl_DStringInit(&buffer); start = pattern; /* * Perform tilde substitution, if needed. */ if (start[0] == '~') { /* * Find the first path separator after the tilde. */ for (tail = start; *tail != '\0'; tail++) { if (*tail == '\\') { if (strchr(separators, tail[1]) != NULL) { break; } } else if (strchr(separators, *tail) != NULL) { break; } } /* * Determine the home directory for the specified user. */ c = *tail; *tail = '\0'; head = DoTildeSubst(interp, start+1, &buffer); *tail = c; if (head == NULL) { return TCL_ERROR; } if (head != Tcl_DStringValue(&buffer)) { Tcl_DStringAppend(&buffer, head, -1); } pathPrefix = Tcl_NewStringObj(Tcl_DStringValue(&buffer), Tcl_DStringLength(&buffer)); Tcl_IncrRefCount(pathPrefix); globFlags |= TCL_GLOBMODE_DIR; if (c != '\0') { tail++; } Tcl_DStringFree(&buffer); } else { tail = pattern; } } else { Tcl_IncrRefCount(pathPrefix); tail = pattern; } /* * Handling empty path prefixes with glob patterns like 'C:' or * 'c:////////' is a pain on Windows if we leave it too late, since these * aren't really patterns at all! We therefore check the head of the * pattern now for such cases, if we don't have an unquoted prefix yet. * * Similarly on Unix with '/' at the head of the pattern -- it just * indicates the root volume, so we treat it as such. */ if (tclPlatform == TCL_PLATFORM_WINDOWS) { if (pathPrefix == NULL && tail[0] != '\0' && tail[1] == ':') { char *p = tail + 1; pathPrefix = Tcl_NewStringObj(tail, 1); while (*p != '\0') { char c = p[1]; if (*p == '\\') { if (strchr(separators, c) != NULL) { if (c == '\\') { c = '/'; } Tcl_AppendToObj(pathPrefix, &c, 1); p++; } else { break; } } else if (strchr(separators, *p) != NULL) { Tcl_AppendToObj(pathPrefix, p, 1); } else { break; } p++; } tail = p; Tcl_IncrRefCount(pathPrefix); } else if (pathPrefix == NULL && (tail[0] == '/' || (tail[0] == '\\' && tail[1] == '\\'))) { int driveNameLen; Tcl_Obj *driveName; Tcl_Obj *temp = Tcl_NewStringObj(tail, -1); Tcl_IncrRefCount(temp); switch (TclGetPathType(temp, NULL, &driveNameLen, &driveName)) { case TCL_PATH_VOLUME_RELATIVE: { /* * Volume relative path which is equivalent to a path in the * root of the cwd's volume. We will actually return * non-volume-relative paths here. i.e. 'glob /foo*' will * return 'C:/foobar'. This is much the same as globbing for a * path with '\\' will return one with '/' on Windows. */ Tcl_Obj *cwd = Tcl_FSGetCwd(interp); if (cwd == NULL) { Tcl_DecrRefCount(temp); return TCL_ERROR; } pathPrefix = Tcl_NewStringObj(Tcl_GetString(cwd), 3); Tcl_DecrRefCount(cwd); if (tail[0] == '/') { tail++; } else { tail+=2; } Tcl_IncrRefCount(pathPrefix); break; } case TCL_PATH_ABSOLUTE: /* * Absolute, possibly network path //Machine/Share. Use that * as the path prefix (it already has a refCount). */ pathPrefix = driveName; tail += driveNameLen; break; case TCL_PATH_RELATIVE: /* Do nothing */ break; } Tcl_DecrRefCount(temp); } /* * ':' 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] == '/') { pathPrefix = Tcl_NewStringObj(tail, 1); tail++; Tcl_IncrRefCount(pathPrefix); } } /* * Finally if we still haven't managed to generate a path prefix, check if * the path starts with a current volume. */ if (pathPrefix == NULL) { int driveNameLen; Tcl_Obj *driveName; if (TclFSNonnativePathType(tail, (int) strlen(tail), NULL, &driveNameLen, &driveName) == TCL_PATH_ABSOLUTE) { pathPrefix = driveName; tail += driveNameLen; } } /* * To process a [glob] invokation, this function may be called multiple * times. Each time, the previously discovered filenames are in the * interpreter result. We stash that away here so the result is free for * error messsages. */ savedResultObj = Tcl_GetObjResult(interp); Tcl_IncrRefCount(savedResultObj); Tcl_ResetResult(interp); TclNewObj(filenamesObj); Tcl_IncrRefCount(filenamesObj); /* * Now we do the actual globbing, adding filenames as we go to buffer in * filenamesObj */ if (*tail == '\0' && pathPrefix != NULL) { /* * An empty pattern. This means 'pathPrefix' is actually * a full path of a file/directory we want to simply check * for existence and type. */ if (types == NULL) { /* * We just want to check for existence. In this case we * make it easy on Tcl_FSMatchInDirectory and its * sub-implementations by not bothering them (even though * they should support this situation) and we just use the * simple existence check with Tcl_FSAccess. */ if (Tcl_FSAccess(pathPrefix, F_OK) == 0) { Tcl_ListObjAppendElement(interp, filenamesObj, pathPrefix); } result = TCL_OK; } else { /* * We want to check for the correct type. Tcl_FSMatchInDirectory * is documented to do this for us, if we give it a NULL pattern. */ result = Tcl_FSMatchInDirectory(interp, filenamesObj, pathPrefix, NULL, types); } } else { result = DoGlob(interp, filenamesObj, separators, pathPrefix, globFlags & TCL_GLOBMODE_DIR, tail, types); } /* * Check for errors... */ if (result != TCL_OK) { TclDecrRefCount(filenamesObj); TclDecrRefCount(savedResultObj); if (pathPrefix != NULL) { Tcl_DecrRefCount(pathPrefix); } return result; } /* * If we only want the tails, we must strip off the prefix now. It may * seem more efficient to pass the tails flag down into DoGlob, * Tcl_FSMatchInDirectory, but those functions are continually adjusting * the prefix as the various pieces of the pattern are assimilated, so * that would add a lot of complexity to the code. This way is a little * slower (when the -tails flag is given), but much simpler to code. * * We do it by rewriting the result list in-place. */ if (globFlags & TCL_GLOBMODE_TAILS) { int objc, i; Tcl_Obj **objv; int prefixLen; const char *pre; /* * If this length has never been set, set it here. */ if (pathPrefix == NULL) { Tcl_Panic("Called TclGlob with TCL_GLOBMODE_TAILS and pathPrefix==NULL"); } pre = Tcl_GetStringFromObj(pathPrefix, &prefixLen); if (prefixLen > 0 && (strchr(separators, pre[prefixLen-1]) == NULL)) { /* * If we're on Windows and the prefix is a volume relative one * like 'C:', then there won't be a path separator in between, so * no need to skip it here. */ if ((tclPlatform != TCL_PLATFORM_WINDOWS) || (prefixLen != 2) || (pre[1] != ':')) { prefixLen++; } } Tcl_ListObjGetElements(NULL, filenamesObj, &objc, &objv); for (i = 0; i< objc; i++) { int len; char *oldStr = Tcl_GetStringFromObj(objv[i], &len); Tcl_Obj* elems[1]; if (len == prefixLen) { if ((pattern[0] == '\0') || (strchr(separators, pattern[0]) == NULL)) { TclNewLiteralStringObj(elems[0], "."); } else { TclNewLiteralStringObj(elems[0], "/"); } } else { elems[0] = Tcl_NewStringObj(oldStr+prefixLen, len-prefixLen); } Tcl_ListObjReplace(interp, filenamesObj, i, 1, 1, elems); } } /* * Now we have a list of discovered filenames in filenamesObj and a list * of previously discovered (saved earlier from the interpreter result) in * savedResultObj. Merge them and put them back in the interpreter result. */ if (Tcl_IsShared(savedResultObj)) { TclDecrRefCount(savedResultObj); savedResultObj = Tcl_DuplicateObj(savedResultObj); Tcl_IncrRefCount(savedResultObj); } if (Tcl_ListObjAppendList(interp, savedResultObj, filenamesObj) != TCL_OK){ result = TCL_ERROR; } else { Tcl_SetObjResult(interp, savedResultObj); } TclDecrRefCount(savedResultObj); TclDecrRefCount(filenamesObj); if (pathPrefix != NULL) { Tcl_DecrRefCount(pathPrefix); } return result; }  /* *---------------------------------------------------------------------- * * SkipToChar -- * * This function traverses a glob pattern looking for the next unquoted * occurance of the specified character at the same braces nesting level. * * Results: * Updates stringPtr to point to the matching character, or to the end of * the string if nothing matched. The return value is 1 if a match was * found at the top level, otherwise it is 0. * * Side effects: * None. * *---------------------------------------------------------------------- */ static int SkipToChar( char **stringPtr, /* Pointer string to check. */ int match) /* Character to find. */ { int quoted, level; register char *p; quoted = 0; level = 0; for (p = *stringPtr; *p != '\0'; p++) { if (quoted) { quoted = 0; continue; } if ((level == 0) && (*p == match)) { *stringPtr = p; return 1; } if (*p == '{') { level++; } else if (*p == '}') { level--; } else if (*p == '\\') { quoted = 1; } } *stringPtr = p; return 0; }  /* *---------------------------------------------------------------------- * * DoGlob -- * * This recursive procedure forms the heart of the globbing code. It * performs a depth-first traversal of the tree given by the path name to * be globbed and the pattern. The directory and remainder are assumed to * be native format paths. The prefix contained in 'pathPtr' is either a * directory or path from which to start the search (or NULL). If pathPtr * is NULL, then the pattern must not start with an absolute path * specification (that case should be handled by moving the absolute path * prefix into pathPtr before calling DoGlob). * * Results: * The return value is a standard Tcl result indicating whether an error * occurred in globbing. After a normal return the result in interp will * be set to hold all of the file names given by the dir and remaining * arguments. After an error the result in interp will hold an error * message. * * Side effects: * None. * *---------------------------------------------------------------------- */ static int DoGlob( Tcl_Interp *interp, /* Interpreter to use for error reporting * (e.g. unmatched brace). */ Tcl_Obj *matchesObj, /* Unshared list object in which to place all * resulting filenames. Caller allocates and * deallocates; DoGlob must not touch the * refCount of this object. */ const char *separators, /* String containing separator characters that * should be used to identify globbing * boundaries. */ Tcl_Obj *pathPtr, /* Completely expanded prefix. */ int flags, /* If non-zero then pathPtr is a directory */ char *pattern, /* The pattern to match against. Must not be a * pointer to a static string. */ Tcl_GlobTypeData *types) /* List object containing list of acceptable * types. May be NULL. */ { int baseLength, quoted, count; int result = TCL_OK; char *name, *p, *openBrace, *closeBrace, *firstSpecialChar; Tcl_Obj *joinedPtr; /* * Consume any leading directory separators, leaving pattern pointing just * past the last initial separator. */ count = 0; name = pattern; for (; *pattern != '\0'; pattern++) { if (*pattern == '\\') { /* * If the first character is escaped, either we have a directory * separator, or we have any other character. In the latter case * the rest is a pattern, and we must break from the loop. This * is particularly important on Windows where '\' is both the * escaping character and a directory separator. */ if (strchr(separators, pattern[1]) != NULL) { pattern++; } else { break; } } else if (strchr(separators, *pattern) == NULL) { break; } count++; } /* * This block of code is not exercised by the Tcl test suite as of Tcl * 8.5a0. Simplifications to the calling paths suggest it may not be * necessary any more, since path separators are handled elsewhere. It is * left in place in case new bugs are reported. */ #if 0 /* PROBABLY_OBSOLETE */ /* * Deal with path separators. */ if (pathPtr == NULL) { /* * Length used to be the length of the prefix, and lastChar the * lastChar of the prefix. But, none of this is used any more. */ int length = 0; char lastChar = 0; switch (tclPlatform) { case TCL_PLATFORM_WINDOWS: /* * If this is a drive relative path, add the colon and the * trailing slash if needed. Otherwise add the slash if this is * the first absolute element, or a later relative element. Add an * extra slash if this is a UNC path. */ if (*name == ':') { Tcl_DStringAppend(&append, ":", 1); if (count > 1) { Tcl_DStringAppend(&append, "/", 1); } } else if ((*pattern != '\0') && (((length > 0) && (strchr(separators, lastChar) == NULL)) || ((length == 0) && (count > 0)))) { Tcl_DStringAppend(&append, "/", 1); if ((length == 0) && (count > 1)) { Tcl_DStringAppend(&append, "/", 1); } } break; case TCL_PLATFORM_UNIX: /* * Add a separator if this is the first absolute element, or a * later relative element. */ if ((*pattern != '\0') && (((length > 0) && (strchr(separators, lastChar) == NULL)) || ((length == 0) && (count > 0)))) { Tcl_DStringAppend(&append, "/", 1); } break; } } #endif /* PROBABLY_OBSOLETE */ /* * Look for the first matching pair of braces or the first directory * separator that is not inside a pair of braces. */ openBrace = closeBrace = NULL; quoted = 0; for (p = pattern; *p != '\0'; p++) { if (quoted) { quoted = 0; } else if (*p == '\\') { quoted = 1; if (strchr(separators, p[1]) != NULL) { /* * Quoted directory separator. */ break; } } else if (strchr(separators, *p) != NULL) { /* * Unquoted directory separator. */ break; } else if (*p == '{') { openBrace = p; p++; if (SkipToChar(&p, '}')) { /* * Balanced braces. */ closeBrace = p; break; } Tcl_SetResult(interp, "unmatched open-brace in file name", TCL_STATIC); return TCL_ERROR; } else if (*p == '}') { Tcl_SetResult(interp, "unmatched close-brace in file name", TCL_STATIC); return TCL_ERROR; } } /* * Substitute the alternate patterns from the braces and recurse. */ if (openBrace != NULL) { char *element; Tcl_DString newName; Tcl_DStringInit(&newName); /* * For each element within in the outermost pair of braces, append the * element and the remainder to the fixed portion before the first * brace and recursively call DoGlob. */ Tcl_DStringAppend(&newName, pattern, openBrace-pattern); baseLength = Tcl_DStringLength(&newName); *closeBrace = '\0'; for (p = openBrace; p != closeBrace; ) { p++; element = p; SkipToChar(&p, ','); Tcl_DStringSetLength(&newName, baseLength); Tcl_DStringAppend(&newName, element, p-element); Tcl_DStringAppend(&newName, closeBrace+1, -1); result = DoGlob(interp, matchesObj, separators, pathPtr, flags, Tcl_DStringValue(&newName), types); if (result != TCL_OK) { break; } } *closeBrace = '}'; Tcl_DStringFree(&newName); return result; } /* * At this point, there are no more brace substitutions to perform on this * path component. The variable p is pointing at a quoted or unquoted * directory separator or the end of the string. So we need to check for * special globbing characters in the current pattern. We avoid modifying * pattern if p is pointing at the end of the string. * * If we find any globbing characters, then we must call * Tcl_FSMatchInDirectory. If we're at the end of the string, then that's * all we need to do. If we're not at the end of the string, then we must * recurse, so we do that below. * * Alternatively, if there are no globbing characters then again there are * two cases. If we're at the end of the string, we just need to check for * the given path's existence and type. If we're not at the end of the * string, we recurse. */ if (*p != '\0') { /* * Note that we are modifying the string in place. This won't work if * the string is a static. */ char savedChar = *p; *p = '\0'; firstSpecialChar = strpbrk(pattern, "*[]?\\"); *p = savedChar; } else { firstSpecialChar = strpbrk(pattern, "*[]?\\"); } if (firstSpecialChar != NULL) { /* * Look for matching files in the given directory. The implementation * of this function is filesystem specific. For each file that * matches, it will add the match onto the resultPtr given. */ static Tcl_GlobTypeData dirOnly = { TCL_GLOB_TYPE_DIR, 0, NULL, NULL }; char save = *p; Tcl_Obj* subdirsPtr; if (*p == '\0') { return Tcl_FSMatchInDirectory(interp, matchesObj, pathPtr, pattern, types); } /* * We do the recursion ourselves. This makes implementing * Tcl_FSMatchInDirectory for each filesystem much easier. */ *p = '\0'; TclNewObj(subdirsPtr); Tcl_IncrRefCount(subdirsPtr); result = Tcl_FSMatchInDirectory(interp, subdirsPtr, pathPtr, pattern, &dirOnly); *p = save; if (result == TCL_OK) { int subdirc, i; Tcl_Obj **subdirv; result = Tcl_ListObjGetElements(interp, subdirsPtr, &subdirc, &subdirv); for (i=0; result==TCL_OK && i<subdirc; i++) { result = DoGlob(interp, matchesObj, separators, subdirv[i], 1, p+1, types); } } TclDecrRefCount(subdirsPtr); return result; } /* * We reach here with no pattern char in current section */ if (*p == '\0') { /* * This is the code path reached by a command like 'glob foo'. * * There are no more wildcards in the pattern and no more unprocessed * characters in the pattern, so now we can construct the path, and * pass it to Tcl_FSMatchInDirectory with an empty pattern to verify * the existence of the file and check it is of the correct type (if a * 'types' flag it given -- if no such flag was given, we could just * use 'Tcl_FSLStat', but for simplicity we keep to a common * approach). */ int length; Tcl_DString append; Tcl_DStringInit(&append); Tcl_DStringAppend(&append, pattern, p-pattern); if (pathPtr != NULL) { (void) Tcl_GetStringFromObj(pathPtr, &length); } else { length = 0; } switch (tclPlatform) { case TCL_PLATFORM_WINDOWS: if (length == 0 && (Tcl_DStringLength(&append) == 0)) { if (((*name == '\\') && (name[1] == '/' || name[1] == '\\')) || (*name == '/')) { Tcl_DStringAppend(&append, "/", 1); } else { Tcl_DStringAppend(&append, ".", 1); } } #if defined(__CYGWIN__) && defined(__WIN32__) { extern int cygwin_conv_to_win32_path(const char *, char *); char winbuf[MAX_PATH+1]; cygwin_conv_to_win32_path(Tcl_DStringValue(&append), winbuf); Tcl_DStringFree(&append); Tcl_DStringAppend(&append, winbuf, -1); } #endif /* __CYGWIN__ && __WIN32__ */ break; case TCL_PLATFORM_UNIX: if (length == 0 && (Tcl_DStringLength(&append) == 0)) { if ((*name == '\\' && name[1] == '/') || (*name == '/')) { Tcl_DStringAppend(&append, "/", 1); } else { Tcl_DStringAppend(&append, ".", 1); } } break; } /* * Common for all platforms. */ if (pathPtr == NULL) { joinedPtr = Tcl_NewStringObj(Tcl_DStringValue(&append), Tcl_DStringLength(&append)); } else if (flags) { joinedPtr = TclNewFSPathObj(pathPtr, Tcl_DStringValue(&append), Tcl_DStringLength(&append)); } else { joinedPtr = Tcl_DuplicateObj(pathPtr); if (strchr(separators, Tcl_DStringValue(&append)[0]) == NULL) { /* * The current prefix must end in a separator. */ int len; const char *joined = Tcl_GetStringFromObj(joinedPtr,&len); if (strchr(separators, joined[len-1]) == NULL) { Tcl_AppendToObj(joinedPtr, "/", 1); } } Tcl_AppendToObj(joinedPtr, Tcl_DStringValue(&append), Tcl_DStringLength(&append)); } Tcl_IncrRefCount(joinedPtr); Tcl_DStringFree(&append); Tcl_FSMatchInDirectory(interp, matchesObj, joinedPtr, NULL, types); Tcl_DecrRefCount(joinedPtr); return TCL_OK; } /* * If it's not the end of the string, we must recurse */ if (pathPtr == NULL) { joinedPtr = Tcl_NewStringObj(pattern, p-pattern); } else if (flags) { joinedPtr = TclNewFSPathObj(pathPtr, pattern, p-pattern); } else { joinedPtr = Tcl_DuplicateObj(pathPtr); if (strchr(separators, pattern[0]) == NULL) { /* * The current prefix must end in a separator, unless this is a * volume-relative path. In particular globbing in Windows shares, * when not using -dir or -path, e.g. 'glob [file join * //machine/share/subdir *]' requires adding a separator here. * This behaviour is not currently tested for in the test suite. */ int len; const char *joined = Tcl_GetStringFromObj(joinedPtr,&len); if (strchr(separators, joined[len-1]) == NULL) { if (Tcl_FSGetPathType(pathPtr) != TCL_PATH_VOLUME_RELATIVE) { Tcl_AppendToObj(joinedPtr, "/", 1); } } } Tcl_AppendToObj(joinedPtr, pattern, p-pattern); } Tcl_IncrRefCount(joinedPtr); result = DoGlob(interp, matchesObj, separators, joinedPtr, 1, p, types); Tcl_DecrRefCount(joinedPtr); return result; }  /* *--------------------------------------------------------------------------- * * Tcl_AllocStatBuf -- * * This procedure allocates a Tcl_StatBuf on the heap. It exists so that * extensions may be used unchanged on systems where largefile support is * optional. * * Results: * A pointer to a Tcl_StatBuf which may be deallocated by being passed to * ckfree(). * * Side effects: * None. * *--------------------------------------------------------------------------- */ Tcl_StatBuf * Tcl_AllocStatBuf(void) { return (Tcl_StatBuf *) ckalloc(sizeof(Tcl_StatBuf)); }  /* * Local Variables: * mode: c * c-basic-offset: 4 * fill-column: 78 * End: */

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