summaryrefslogtreecommitdiffstats
path: root/generic
diff options
context:
space:
mode:
Diffstat (limited to 'generic')
-rw-r--r--generic/tclPathObj.c229
1 files changed, 80 insertions, 149 deletions
diff --git a/generic/tclPathObj.c b/generic/tclPathObj.c
index 6c368e5..3b907a4 100644
--- a/generic/tclPathObj.c
+++ b/generic/tclPathObj.c
@@ -10,7 +10,7 @@
* See the file "license.terms" for information on usage and redistribution of
* this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
- * RCS: @(#) $Id: tclPathObj.c,v 1.81 2009/08/18 14:44:21 dgp Exp $
+ * RCS: @(#) $Id: tclPathObj.c,v 1.82 2009/08/20 15:17:39 dgp Exp $
*/
#include "tclInt.h"
@@ -20,6 +20,7 @@
* Prototypes for functions defined later in this file.
*/
+static Tcl_Obj * AppendPath(Tcl_Obj *head, Tcl_Obj *tail);
static void DupFsPathInternalRep(Tcl_Obj *srcPtr,
Tcl_Obj *copyPtr);
static void FreeFsPathInternalRep(Tcl_Obj *pathPtr);
@@ -1287,6 +1288,30 @@ TclNewFSPathObj(
const char *p;
int state = 0, count = 0;
+ /* [Bug 2806250] - this is only a partial solution of the problem.
+ * The PATHFLAGS != 0 representation assumes in many places that
+ * the "tail" part stored in the normPathPtr field is itself a
+ * relative path. Strings that begin with "~" are not relative paths,
+ * so we must prevent their storage in the normPathPtr field.
+ *
+ * More generally we ought to be testing "addStrRep" for any value
+ * that is not a relative path, but in an unconstrained VFS world
+ * that could be just about anything, and testing could be expensive.
+ * Since this routine plays a big role in [glob], anything that slows
+ * it down would be unwelcome. For now, continue the risk of further
+ * bugs when some Tcl_Filesystem uses otherwise relative path strings
+ * as absolute path strings. Sensible Tcl_Filesystems will avoid
+ * that by mounting on path prefixes like foo:// which cannot be the
+ * name of a file or directory read from a native [glob] operation.
+ */
+ if (addStrRep[0] == '~') {
+ Tcl_Obj *tail = Tcl_NewStringObj(addStrRep, len);
+
+ pathPtr = AppendPath(dirPtr, tail);
+ Tcl_DecrRefCount(tail);
+ return pathPtr;
+ }
+
tsdPtr = TCL_TSD_INIT(&tclFsDataKey);
pathPtr = Tcl_NewObj();
@@ -1352,6 +1377,49 @@ TclNewFSPathObj(
return pathPtr;
}
+
+static Tcl_Obj *
+AppendPath(
+ Tcl_Obj *head,
+ Tcl_Obj *tail)
+{
+ int numBytes;
+ const char *bytes;
+ Tcl_Obj *copy = Tcl_DuplicateObj(head);
+
+ bytes = Tcl_GetStringFromObj(copy, &numBytes);
+
+ /*
+ * Should we perhaps use 'Tcl_FSPathSeparator'? But then what about the
+ * Windows special case? Perhaps we should just check if cwd is a root
+ * volume. We should never get numBytes == 0 in this code path.
+ */
+
+ switch (tclPlatform) {
+ case TCL_PLATFORM_UNIX:
+ if (bytes[numBytes-1] != '/') {
+ Tcl_AppendToObj(copy, "/", 1);
+ }
+ break;
+
+ case TCL_PLATFORM_WINDOWS:
+ /*
+ * We need the extra 'numBytes != 2', and ':' checks because a volume
+ * relative path doesn't get a '/'. For example 'glob C:*cat*.exe'
+ * will return 'C:cat32.exe'
+ */
+
+ if (bytes[numBytes-1] != '/' && bytes[numBytes-1] != '\\') {
+ if (numBytes!= 2 || bytes[1] != ':') {
+ Tcl_AppendToObj(copy, "/", 1);
+ }
+ }
+ break;
+ }
+
+ Tcl_AppendObjToObj(copy, tail);
+ return copy;
+}
/*
*---------------------------------------------------------------------------
@@ -1365,11 +1433,6 @@ TclNewFSPathObj(
* directory. Returns a Tcl_Obj representing filename of the path
* relative to the directory.
*
- * In the case where the resulting path would start with a '~', we take
- * special care to return an ordinary string. This means to use that path
- * (and not have it interpreted as a user name), one must prepend './'.
- * This may seem strange, but that is how 'glob' is currently defined.
- *
* Results:
* NULL on error, otherwise a valid object, typically with refCount of
* zero, which it is assumed the caller will increment.
@@ -1388,67 +1451,13 @@ TclFSMakePathRelative(
{
int cwdLen, len;
const char *tempStr;
- ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&tclFsDataKey);
if (pathPtr->typePtr == &tclFsPathType) {
FsPath *fsPathPtr = PATHOBJ(pathPtr);
if (PATHFLAGS(pathPtr) != 0
&& fsPathPtr->cwdPtr == cwdPtr) {
- pathPtr = fsPathPtr->normPathPtr;
-
- /*
- * Free old representation.
- */
-
- if (pathPtr->typePtr != NULL) {
- if (pathPtr->bytes == NULL) {
- if (pathPtr->typePtr->updateStringProc == NULL) {
- if (interp != NULL) {
- Tcl_ResetResult(interp);
- Tcl_AppendResult(interp, "can't find object"
- "string representation", NULL);
- }
- return NULL;
- }
- pathPtr->typePtr->updateStringProc(pathPtr);
- }
- TclFreeIntRep(pathPtr);
- }
-
- /*
- * Now pathPtr is a string object.
- */
-
- if (Tcl_GetString(pathPtr)[0] == '~') {
- /*
- * If the first character of the path is a tilde, we must just
- * return the path as is, to agree with the defined behaviour
- * of 'glob'.
- */
-
- return pathPtr;
- }
-
- fsPathPtr = (FsPath *) ckalloc(sizeof(FsPath));
-
- /*
- * Circular reference, by design.
- */
-
- fsPathPtr->translatedPathPtr = pathPtr;
- fsPathPtr->normPathPtr = NULL;
- fsPathPtr->cwdPtr = cwdPtr;
- Tcl_IncrRefCount(cwdPtr);
- fsPathPtr->nativePathPtr = NULL;
- fsPathPtr->fsRecPtr = NULL;
- fsPathPtr->filesystemEpoch = tsdPtr->filesystemEpoch;
-
- SETPATHOBJ(pathPtr, fsPathPtr);
- PATHFLAGS(pathPtr) = 0;
- pathPtr->typePtr = &tclFsPathType;
-
- return pathPtr;
+ return fsPathPtr->normPathPtr;
}
}
@@ -1794,7 +1803,6 @@ Tcl_FSGetNormalizedPath(
Tcl_Obj *dir, *copy;
int cwdLen, pathType;
- const char *cwdStr;
ClientData clientData = NULL;
pathType = Tcl_FSGetPathType(fsPathPtr->cwdPtr);
@@ -1802,40 +1810,21 @@ Tcl_FSGetNormalizedPath(
if (dir == NULL) {
return NULL;
}
+ /* TODO: Figure out why this is needed. */
if (pathPtr->bytes == NULL) {
UpdateStringOfFsPath(pathPtr);
}
- copy = Tcl_DuplicateObj(dir);
- Tcl_IncrRefCount(copy);
+
+ copy = AppendPath(dir, fsPathPtr->normPathPtr);
Tcl_IncrRefCount(dir);
+ Tcl_IncrRefCount(copy);
/*
* We now own a reference on both 'dir' and 'copy'
*/
- cwdStr = Tcl_GetStringFromObj(copy, &cwdLen);
-
- /*
- * Should we perhaps use 'Tcl_FSPathSeparator'? But then what about
- * the Windows special case? Perhaps we should just check if cwd is a
- * root volume. We should never get cwdLen == 0 in this code path.
- */
-
- switch (tclPlatform) {
- case TCL_PLATFORM_UNIX:
- if (cwdStr[cwdLen-1] != '/') {
- Tcl_AppendToObj(copy, "/", 1);
- cwdLen++;
- }
- break;
- case TCL_PLATFORM_WINDOWS:
- if (cwdStr[cwdLen-1] != '/' && cwdStr[cwdLen-1] != '\\') {
- Tcl_AppendToObj(copy, "/", 1);
- cwdLen++;
- }
- break;
- }
- Tcl_AppendObjToObj(copy, fsPathPtr->normPathPtr);
+ (void) Tcl_GetStringFromObj(dir, &cwdLen);
+ cwdLen += (Tcl_GetString(copy)[cwdLen] == '/');
/* Normalize the combined string. */
@@ -1936,35 +1925,12 @@ Tcl_FSGetNormalizedPath(
} else if (fsPathPtr->normPathPtr == NULL) {
int cwdLen;
Tcl_Obj *copy;
- const char *cwdStr;
ClientData clientData = NULL;
- copy = Tcl_DuplicateObj(fsPathPtr->cwdPtr);
- Tcl_IncrRefCount(copy);
- cwdStr = Tcl_GetStringFromObj(copy, &cwdLen);
+ copy = AppendPath(fsPathPtr->cwdPtr, pathPtr);
- /*
- * Should we perhaps use 'Tcl_FSPathSeparator'? But then what
- * about the Windows special case? Perhaps we should just check if
- * cwd is a root volume. We should never get cwdLen == 0 in this
- * code path.
- */
-
- switch (tclPlatform) {
- case TCL_PLATFORM_UNIX:
- if (cwdStr[cwdLen-1] != '/') {
- Tcl_AppendToObj(copy, "/", 1);
- cwdLen++;
- }
- break;
- case TCL_PLATFORM_WINDOWS:
- if (cwdStr[cwdLen-1] != '/' && cwdStr[cwdLen-1] != '\\') {
- Tcl_AppendToObj(copy, "/", 1);
- cwdLen++;
- }
- break;
- }
- Tcl_AppendObjToObj(copy, pathPtr);
+ (void) Tcl_GetStringFromObj(fsPathPtr->cwdPtr, &cwdLen);
+ cwdLen += (Tcl_GetString(copy)[cwdLen] == '/');
/*
* Normalize the combined string, but only starting after the end
@@ -2718,7 +2684,6 @@ UpdateStringOfFsPath(
register Tcl_Obj *pathPtr) /* path obj with string rep to update. */
{
FsPath *fsPathPtr = PATHOBJ(pathPtr);
- const char *cwdStr;
int cwdLen;
Tcl_Obj *copy;
@@ -2726,42 +2691,8 @@ UpdateStringOfFsPath(
Tcl_Panic("Called UpdateStringOfFsPath with invalid object");
}
- copy = Tcl_DuplicateObj(fsPathPtr->cwdPtr);
- Tcl_IncrRefCount(copy);
-
- cwdStr = Tcl_GetStringFromObj(copy, &cwdLen);
-
- /*
- * Should we perhaps use 'Tcl_FSPathSeparator'? But then what about the
- * Windows special case? Perhaps we should just check if cwd is a root
- * volume. We should never get cwdLen == 0 in this code path.
- */
-
- switch (tclPlatform) {
- case TCL_PLATFORM_UNIX:
- if (cwdStr[cwdLen-1] != '/') {
- Tcl_AppendToObj(copy, "/", 1);
- cwdLen++;
- }
- break;
-
- case TCL_PLATFORM_WINDOWS:
- /*
- * We need the extra 'cwdLen != 2', and ':' checks because a volume
- * relative path doesn't get a '/'. For example 'glob C:*cat*.exe'
- * will return 'C:cat32.exe'
- */
-
- if (cwdStr[cwdLen-1] != '/' && cwdStr[cwdLen-1] != '\\') {
- if (cwdLen != 2 || cwdStr[1] != ':') {
- Tcl_AppendToObj(copy, "/", 1);
- cwdLen++;
- }
- }
- break;
- }
+ copy = AppendPath(fsPathPtr->cwdPtr, fsPathPtr->normPathPtr);
- Tcl_AppendObjToObj(copy, fsPathPtr->normPathPtr);
pathPtr->bytes = Tcl_GetStringFromObj(copy, &cwdLen);
pathPtr->length = cwdLen;
copy->bytes = tclEmptyStringRep;
generated by cgit v0.12 at 2024-11-23 05:35:30 (GMT)