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-rw-r--r--generic/tclBinary.c74
-rw-r--r--generic/tclCmdMZ.c45
-rw-r--r--generic/tclCompCmdsSZ.c6
-rw-r--r--[-rwxr-xr-x]generic/tclStrToD.c0
-rw-r--r--generic/tclStringObj.c42
-rw-r--r--generic/tclStringTrim.h27
-rw-r--r--generic/tclStubLibTbl.c58
7 files changed, 165 insertions, 87 deletions
diff --git a/generic/tclBinary.c b/generic/tclBinary.c
index 4e977f2..981f174 100644
--- a/generic/tclBinary.c
+++ b/generic/tclBinary.c
@@ -610,9 +610,7 @@ UpdateStringOfByteArray(
*
* This function appends an array of bytes to a byte array object. Note
* that the object *must* be unshared, and the array of bytes *must not*
- * refer to the object being appended to. Also the caller must have
- * already checked that the final length of the bytearray after the
- * append operations is complete will not overflow the int range.
+ * refer to the object being appended to.
*
* Results:
* None.
@@ -631,6 +629,7 @@ TclAppendBytesToByteArray(
int len)
{
ByteArray *byteArrayPtr;
+ int needed;
if (Tcl_IsShared(objPtr)) {
Tcl_Panic("%s called with shared object","TclAppendBytesToByteArray");
@@ -639,64 +638,57 @@ TclAppendBytesToByteArray(
Tcl_Panic("%s must be called with definite number of bytes to append",
"TclAppendBytesToByteArray");
}
+ if (len == 0) {
+ /* Append zero bytes is a no-op. */
+ return;
+ }
if (objPtr->typePtr != &tclByteArrayType) {
SetByteArrayFromAny(NULL, objPtr);
}
byteArrayPtr = GET_BYTEARRAY(objPtr);
+ if (len > INT_MAX - byteArrayPtr->used) {
+ Tcl_Panic("max size for a Tcl value (%d bytes) exceeded", INT_MAX);
+ }
+
+ needed = byteArrayPtr->used + len;
/*
* If we need to, resize the allocated space in the byte array.
*/
- if (byteArrayPtr->used + len > byteArrayPtr->allocated) {
- unsigned int attempt, used = byteArrayPtr->used;
- ByteArray *tmpByteArrayPtr = NULL;
+ if (needed > byteArrayPtr->allocated) {
+ ByteArray *ptr = NULL;
+ int attempt;
- attempt = byteArrayPtr->allocated;
- if (attempt < 1) {
- /*
- * No allocated bytes, so must be none used too. We use this
- * method to calculate how many bytes to allocate because we can
- * end up with a zero-length buffer otherwise, when doubling can
- * cause trouble. [Bug 3067036]
- */
-
- attempt = len + 1;
- } else {
- do {
- attempt *= 2;
- } while (attempt < used+len);
+ if (needed <= INT_MAX/2) {
+ /* Try to allocate double the total space that is needed. */
+ attempt = 2 * needed;
+ ptr = attemptckrealloc(byteArrayPtr, BYTEARRAY_SIZE(attempt));
}
+ if (ptr == NULL) {
+ /* Try to allocate double the increment that is needed (plus). */
+ unsigned int limit = INT_MAX - needed;
+ unsigned int extra = len + TCL_MIN_GROWTH;
+ int growth = (int) ((extra > limit) ? limit : extra);
- if (BYTEARRAY_SIZE(attempt) > BYTEARRAY_SIZE(used)) {
- tmpByteArrayPtr = attemptckrealloc(byteArrayPtr,
- BYTEARRAY_SIZE(attempt));
+ attempt = needed + growth;
+ ptr = attemptckrealloc(byteArrayPtr, BYTEARRAY_SIZE(attempt));
}
-
- if (tmpByteArrayPtr == NULL) {
- attempt = used + len;
- if (BYTEARRAY_SIZE(attempt) < BYTEARRAY_SIZE(used)) {
- Tcl_Panic("attempt to allocate a bigger buffer than we can handle");
- }
- tmpByteArrayPtr = ckrealloc(byteArrayPtr,
- BYTEARRAY_SIZE(attempt));
+ if (ptr == NULL) {
+ /* Last chance: Try to allocate exactly what is needed. */
+ attempt = needed;
+ ptr = ckrealloc(byteArrayPtr, BYTEARRAY_SIZE(attempt));
}
-
- byteArrayPtr = tmpByteArrayPtr;
+ byteArrayPtr = ptr;
byteArrayPtr->allocated = attempt;
- byteArrayPtr->used = used;
SET_BYTEARRAY(objPtr, byteArrayPtr);
}
- /*
- * Do the append if there's any point.
- */
-
- if (len > 0) {
+ if (bytes) {
memcpy(byteArrayPtr->bytes + byteArrayPtr->used, bytes, len);
- byteArrayPtr->used += len;
- TclInvalidateStringRep(objPtr);
}
+ byteArrayPtr->used += len;
+ TclInvalidateStringRep(objPtr);
}
/*
diff --git a/generic/tclCmdMZ.c b/generic/tclCmdMZ.c
index d477216..c02cd1a 100644
--- a/generic/tclCmdMZ.c
+++ b/generic/tclCmdMZ.c
@@ -32,6 +32,39 @@ static int TryPostHandler(ClientData data[], Tcl_Interp *interp,
int result);
static int UniCharIsAscii(int character);
static int UniCharIsHexDigit(int character);
+
+/*
+ * Default set of characters to trim in [string trim] and friends. This is a
+ * UTF-8 literal string containing all Unicode space characters [TIP #413]
+ */
+
+const char tclDefaultTrimSet[] =
+ "\x09\x0a\x0b\x0c\x0d " /* ASCII */
+ "\xc0\x80" /* nul (U+0000) */
+ "\xc2\x85" /* next line (U+0085) */
+ "\xc2\xa0" /* non-breaking space (U+00a0) */
+ "\xe1\x9a\x80" /* ogham space mark (U+1680) */
+ "\xe1\xa0\x8e" /* mongolian vowel separator (U+180e) */
+ "\xe2\x80\x80" /* en quad (U+2000) */
+ "\xe2\x80\x81" /* em quad (U+2001) */
+ "\xe2\x80\x82" /* en space (U+2002) */
+ "\xe2\x80\x83" /* em space (U+2003) */
+ "\xe2\x80\x84" /* three-per-em space (U+2004) */
+ "\xe2\x80\x85" /* four-per-em space (U+2005) */
+ "\xe2\x80\x86" /* six-per-em space (U+2006) */
+ "\xe2\x80\x87" /* figure space (U+2007) */
+ "\xe2\x80\x88" /* punctuation space (U+2008) */
+ "\xe2\x80\x89" /* thin space (U+2009) */
+ "\xe2\x80\x8a" /* hair space (U+200a) */
+ "\xe2\x80\x8b" /* zero width space (U+200b) */
+ "\xe2\x80\xa8" /* line separator (U+2028) */
+ "\xe2\x80\xa9" /* paragraph separator (U+2029) */
+ "\xe2\x80\xaf" /* narrow no-break space (U+202f) */
+ "\xe2\x81\x9f" /* medium mathematical space (U+205f) */
+ "\xe2\x81\xa0" /* word joiner (U+2060) */
+ "\xe3\x80\x80" /* ideographic space (U+3000) */
+ "\xef\xbb\xbf" /* zero width no-break space (U+feff) */
+;
/*
*----------------------------------------------------------------------
@@ -3158,8 +3191,8 @@ StringTrimCmd(
if (objc == 3) {
string2 = TclGetStringFromObj(objv[2], &length2);
} else if (objc == 2) {
- string2 = DEFAULT_TRIM_SET;
- length2 = strlen(DEFAULT_TRIM_SET);
+ string2 = tclDefaultTrimSet;
+ length2 = strlen(tclDefaultTrimSet);
} else {
Tcl_WrongNumArgs(interp, 1, objv, "string ?chars?");
return TCL_ERROR;
@@ -3206,8 +3239,8 @@ StringTrimLCmd(
if (objc == 3) {
string2 = TclGetStringFromObj(objv[2], &length2);
} else if (objc == 2) {
- string2 = DEFAULT_TRIM_SET;
- length2 = strlen(DEFAULT_TRIM_SET);
+ string2 = tclDefaultTrimSet;
+ length2 = strlen(tclDefaultTrimSet);
} else {
Tcl_WrongNumArgs(interp, 1, objv, "string ?chars?");
return TCL_ERROR;
@@ -3252,8 +3285,8 @@ StringTrimRCmd(
if (objc == 3) {
string2 = TclGetStringFromObj(objv[2], &length2);
} else if (objc == 2) {
- string2 = DEFAULT_TRIM_SET;
- length2 = strlen(DEFAULT_TRIM_SET);
+ string2 = tclDefaultTrimSet;
+ length2 = strlen(tclDefaultTrimSet);
} else {
Tcl_WrongNumArgs(interp, 1, objv, "string ?chars?");
return TCL_ERROR;
diff --git a/generic/tclCompCmdsSZ.c b/generic/tclCompCmdsSZ.c
index 5c132b4..4b14f24 100644
--- a/generic/tclCompCmdsSZ.c
+++ b/generic/tclCompCmdsSZ.c
@@ -810,7 +810,7 @@ TclCompileStringTrimLCmd(
tokenPtr = TokenAfter(tokenPtr);
CompileWord(envPtr, tokenPtr, interp, 2);
} else {
- PushLiteral(envPtr, DEFAULT_TRIM_SET, strlen(DEFAULT_TRIM_SET));
+ PushLiteral(envPtr, tclDefaultTrimSet, strlen(tclDefaultTrimSet));
}
OP( STR_TRIM_LEFT);
return TCL_OK;
@@ -838,7 +838,7 @@ TclCompileStringTrimRCmd(
tokenPtr = TokenAfter(tokenPtr);
CompileWord(envPtr, tokenPtr, interp, 2);
} else {
- PushLiteral(envPtr, DEFAULT_TRIM_SET, strlen(DEFAULT_TRIM_SET));
+ PushLiteral(envPtr, tclDefaultTrimSet, strlen(tclDefaultTrimSet));
}
OP( STR_TRIM_RIGHT);
return TCL_OK;
@@ -866,7 +866,7 @@ TclCompileStringTrimCmd(
tokenPtr = TokenAfter(tokenPtr);
CompileWord(envPtr, tokenPtr, interp, 2);
} else {
- PushLiteral(envPtr, DEFAULT_TRIM_SET, strlen(DEFAULT_TRIM_SET));
+ PushLiteral(envPtr, tclDefaultTrimSet, strlen(tclDefaultTrimSet));
}
OP( STR_TRIM);
return TCL_OK;
diff --git a/generic/tclStrToD.c b/generic/tclStrToD.c
index 883e2ea..883e2ea 100755..100644
--- a/generic/tclStrToD.c
+++ b/generic/tclStrToD.c
diff --git a/generic/tclStringObj.c b/generic/tclStringObj.c
index e495c2e..dffa38c 100644
--- a/generic/tclStringObj.c
+++ b/generic/tclStringObj.c
@@ -1281,23 +1281,43 @@ Tcl_AppendObjToObj(
if ((TclIsPureByteArray(objPtr) || objPtr->bytes == tclEmptyStringRep)
&& TclIsPureByteArray(appendObjPtr)) {
- unsigned char *bytesSrc;
- int lengthSrc, lengthTotal;
/*
- * We do not assume that objPtr and appendObjPtr must be distinct!
- * This makes this code a bit more complex than it otherwise would be,
- * but in turn makes it much safer.
+ * You might expect the code here to be
+ *
+ * bytes = Tcl_GetByteArrayFromObj(appendObjPtr, &length);
+ * TclAppendBytesToByteArray(objPtr, bytes, length);
+ *
+ * and essentially all of the time that would be fine. However,
+ * it would run into trouble in the case where objPtr and
+ * appendObjPtr point to the same thing. That may never be a
+ * good idea. It seems to violate Copy On Write, and we don't
+ * have any tests for the situation, since making any Tcl commands
+ * that call Tcl_AppendObjToObj() do that appears impossible
+ * (They honor Copy On Write!). For the sake of extensions that
+ * go off into that realm, though, here's a more complex approach
+ * that can handle all the cases.
*/
+ /* Get lengths */
+ int lengthSrc;
+
(void) Tcl_GetByteArrayFromObj(objPtr, &length);
(void) Tcl_GetByteArrayFromObj(appendObjPtr, &lengthSrc);
- lengthTotal = length + lengthSrc;
- if (((length > lengthSrc) ? length : lengthSrc) > lengthTotal) {
- Tcl_Panic("max size for a Tcl value (%d bytes) exceeded", INT_MAX);
- }
- bytesSrc = Tcl_GetByteArrayFromObj(appendObjPtr, NULL);
- TclAppendBytesToByteArray(objPtr, bytesSrc, lengthSrc);
+
+ /* Grow buffer enough for the append */
+ TclAppendBytesToByteArray(objPtr, NULL, lengthSrc);
+
+ /* Reset objPtr back to the original value */
+ Tcl_SetByteArrayLength(objPtr, length);
+
+ /*
+ * Now do the append knowing that buffer growth cannot cause
+ * any trouble.
+ */
+
+ TclAppendBytesToByteArray(objPtr,
+ Tcl_GetByteArrayFromObj(appendObjPtr, NULL), lengthSrc);
return;
}
diff --git a/generic/tclStringTrim.h b/generic/tclStringTrim.h
index 669f10b..030e4ec 100644
--- a/generic/tclStringTrim.h
+++ b/generic/tclStringTrim.h
@@ -23,32 +23,7 @@
* UTF-8 literal string containing all Unicode space characters. [TIP #413]
*/
-#define DEFAULT_TRIM_SET \
- "\x09\x0a\x0b\x0c\x0d " /* ASCII */\
- "\xc0\x80" /* nul (U+0000) */\
- "\xc2\x85" /* next line (U+0085) */\
- "\xc2\xa0" /* non-breaking space (U+00a0) */\
- "\xe1\x9a\x80" /* ogham space mark (U+1680) */ \
- "\xe1\xa0\x8e" /* mongolian vowel separator (U+180e) */\
- "\xe2\x80\x80" /* en quad (U+2000) */\
- "\xe2\x80\x81" /* em quad (U+2001) */\
- "\xe2\x80\x82" /* en space (U+2002) */\
- "\xe2\x80\x83" /* em space (U+2003) */\
- "\xe2\x80\x84" /* three-per-em space (U+2004) */\
- "\xe2\x80\x85" /* four-per-em space (U+2005) */\
- "\xe2\x80\x86" /* six-per-em space (U+2006) */\
- "\xe2\x80\x87" /* figure space (U+2007) */\
- "\xe2\x80\x88" /* punctuation space (U+2008) */\
- "\xe2\x80\x89" /* thin space (U+2009) */\
- "\xe2\x80\x8a" /* hair space (U+200a) */\
- "\xe2\x80\x8b" /* zero width space (U+200b) */\
- "\xe2\x80\xa8" /* line separator (U+2028) */\
- "\xe2\x80\xa9" /* paragraph separator (U+2029) */\
- "\xe2\x80\xaf" /* narrow no-break space (U+202f) */\
- "\xe2\x81\x9f" /* medium mathematical space (U+205f) */\
- "\xe2\x81\xa0" /* word joiner (U+2060) */\
- "\xe3\x80\x80" /* ideographic space (U+3000) */\
- "\xef\xbb\xbf" /* zero width no-break space (U+feff) */
+MODULE_SCOPE const char tclDefaultTrimSet[];
/*
* The whitespace trimming set used when [concat]enating. This is a subset of
diff --git a/generic/tclStubLibTbl.c b/generic/tclStubLibTbl.c
new file mode 100644
index 0000000..0391502
--- /dev/null
+++ b/generic/tclStubLibTbl.c
@@ -0,0 +1,58 @@
+/*
+ * tclStubLibTbl.c --
+ *
+ * Stub object that will be statically linked into extensions that want
+ * to access Tcl.
+ *
+ * Copyright (c) 1998-1999 by Scriptics Corporation.
+ * Copyright (c) 1998 Paul Duffin.
+ *
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ */
+
+#include "tclInt.h"
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclInitStubTable --
+ *
+ * Initialize the stub table, using the structure pointed at
+ * by the "version" argument.
+ *
+ * Results:
+ * Outputs the value of the "version" argument.
+ *
+ * Side effects:
+ * Sets the stub table pointers.
+ *
+ *----------------------------------------------------------------------
+ */
+MODULE_SCOPE const char *
+TclInitStubTable(
+ const char *version) /* points to the version field of a
+ TclStubInfoType structure variable. */
+{
+ tclStubsPtr = ((const TclStubInfoType *) version)->stubs;
+
+ if (tclStubsPtr->hooks) {
+ tclPlatStubsPtr = tclStubsPtr->hooks->tclPlatStubs;
+ tclIntStubsPtr = tclStubsPtr->hooks->tclIntStubs;
+ tclIntPlatStubsPtr = tclStubsPtr->hooks->tclIntPlatStubs;
+ } else {
+ tclPlatStubsPtr = NULL;
+ tclIntStubsPtr = NULL;
+ tclIntPlatStubsPtr = NULL;
+ }
+
+ return version;
+}
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
generated by cgit v0.12 at 2025-09-28 00:12:02 (GMT)