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-rw-r--r--generic/tclCmdMZ.c158
1 files changed, 59 insertions, 99 deletions
diff --git a/generic/tclCmdMZ.c b/generic/tclCmdMZ.c
index b0c90a4..15895c1 100644
--- a/generic/tclCmdMZ.c
+++ b/generic/tclCmdMZ.c
@@ -15,7 +15,7 @@
* See the file "license.terms" for information on usage and redistribution of
* this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
- * RCS: @(#) $Id: tclCmdMZ.c,v 1.178 2009/02/04 18:15:48 dgp Exp $
+ * RCS: @(#) $Id: tclCmdMZ.c,v 1.179 2009/02/05 22:12:44 dkf Exp $
*/
#include "tclInt.h"
@@ -1136,8 +1136,8 @@ StringFirstCmd(
int objc, /* Number of arguments. */
Tcl_Obj *const objv[]) /* Argument objects. */
{
- Tcl_UniChar *ustring1, *ustring2;
- int match, start, length1, length2;
+ Tcl_UniChar *needleStr, *haystackStr;
+ int match, start, needleLen, haystackLen;
if (objc < 3 || objc > 4) {
Tcl_WrongNumArgs(interp, 1, objv,
@@ -1146,15 +1146,15 @@ StringFirstCmd(
}
/*
- * We are searching string2 for the sequence string1.
+ * We are searching haystackStr for the sequence needleStr.
*/
match = -1;
start = 0;
- length2 = -1;
+ haystackLen = -1;
- ustring1 = Tcl_GetUnicodeFromObj(objv[1], &length1);
- ustring2 = Tcl_GetUnicodeFromObj(objv[2], &length2);
+ needleStr = Tcl_GetUnicodeFromObj(objv[1], &needleLen);
+ haystackStr = Tcl_GetUnicodeFromObj(objv[2], &haystackLen);
if (objc == 4) {
/*
@@ -1162,7 +1162,8 @@ StringFirstCmd(
* point in the string before we think about a match.
*/
- if (TclGetIntForIndexM(interp, objv[3], length2-1, &start) != TCL_OK){
+ if (TclGetIntForIndexM(interp, objv[3], haystackLen-1,
+ &start) != TCL_OK){
return TCL_ERROR;
}
@@ -1170,14 +1171,14 @@ StringFirstCmd(
* Reread to prevent shimmering problems.
*/
- ustring1 = Tcl_GetUnicodeFromObj(objv[1], &length1);
- ustring2 = Tcl_GetUnicodeFromObj(objv[2], &length2);
+ needleStr = Tcl_GetUnicodeFromObj(objv[1], &needleLen);
+ haystackStr = Tcl_GetUnicodeFromObj(objv[2], &haystackLen);
- if (start >= length2) {
+ if (start >= haystackLen) {
goto str_first_done;
} else if (start > 0) {
- ustring2 += start;
- length2 -= start;
+ haystackStr += start;
+ haystackLen -= start;
} else if (start < 0) {
/*
* Invalid start index mapped to string start; Bug #423581
@@ -1187,18 +1188,18 @@ StringFirstCmd(
}
}
- if (length1 > 0) {
+ if (needleLen > 0) {
register Tcl_UniChar *p, *end;
- end = ustring2 + length2 - length1 + 1;
- for (p = ustring2; p < end; p++) {
+ end = haystackStr + haystackLen - needleLen + 1;
+ for (p = haystackStr; p < end; p++) {
/*
* Scan forward to find the first character.
*/
- if ((*p == *ustring1) && (TclUniCharNcmp(ustring1, p,
- (unsigned long) length1) == 0)) {
- match = p - ustring2;
+ if ((*p == *needleStr) && (TclUniCharNcmp(needleStr, p,
+ (unsigned long) needleLen) == 0)) {
+ match = p - haystackStr;
break;
}
}
@@ -1243,8 +1244,8 @@ StringLastCmd(
int objc, /* Number of arguments. */
Tcl_Obj *const objv[]) /* Argument objects. */
{
- Tcl_UniChar *ustring1, *ustring2, *p;
- int match, start, length1, length2;
+ Tcl_UniChar *needleStr, *haystackStr, *p;
+ int match, start, needleLen, haystackLen;
if (objc < 3 || objc > 4) {
Tcl_WrongNumArgs(interp, 1, objv,
@@ -1253,15 +1254,15 @@ StringLastCmd(
}
/*
- * We are searching string2 for the sequence string1.
+ * We are searching haystackString for the sequence needleString.
*/
match = -1;
start = 0;
- length2 = -1;
+ haystackLen = -1;
- ustring1 = Tcl_GetUnicodeFromObj(objv[1], &length1);
- ustring2 = Tcl_GetUnicodeFromObj(objv[2], &length2);
+ needleStr = Tcl_GetUnicodeFromObj(objv[1], &needleLen);
+ haystackStr = Tcl_GetUnicodeFromObj(objv[2], &haystackLen);
if (objc == 4) {
/*
@@ -1269,7 +1270,8 @@ StringLastCmd(
* range to that char index in the string
*/
- if (TclGetIntForIndexM(interp, objv[3], length2-1, &start) != TCL_OK){
+ if (TclGetIntForIndexM(interp, objv[3], haystackLen-1,
+ &start) != TCL_OK){
return TCL_ERROR;
}
@@ -1277,29 +1279,29 @@ StringLastCmd(
* Reread to prevent shimmering problems.
*/
- ustring1 = Tcl_GetUnicodeFromObj(objv[1], &length1);
- ustring2 = Tcl_GetUnicodeFromObj(objv[2], &length2);
+ needleStr = Tcl_GetUnicodeFromObj(objv[1], &needleLen);
+ haystackStr = Tcl_GetUnicodeFromObj(objv[2], &haystackLen);
if (start < 0) {
goto str_last_done;
- } else if (start < length2) {
- p = ustring2 + start + 1 - length1;
+ } else if (start < haystackLen) {
+ p = haystackStr + start + 1 - needleLen;
} else {
- p = ustring2 + length2 - length1;
+ p = haystackStr + haystackLen - needleLen;
}
} else {
- p = ustring2 + length2 - length1;
+ p = haystackStr + haystackLen - needleLen;
}
- if (length1 > 0) {
- for (; p >= ustring2; p--) {
+ if (needleLen > 0) {
+ for (; p >= haystackStr; p--) {
/*
* Scan backwards to find the first character.
*/
- if ((*p == *ustring1) && !memcmp(ustring1, p,
- sizeof(Tcl_UniChar) * (size_t)length1)) {
- match = p - ustring2;
+ if ((*p == *needleStr) && !memcmp(needleStr, p,
+ sizeof(Tcl_UniChar) * (size_t)needleLen)) {
+ match = p - haystackStr;
break;
}
}
@@ -1343,37 +1345,29 @@ StringIndexCmd(
}
/*
- * If we have a ByteArray object, avoid indexing in the Utf string since
- * the byte array contains one byte per character. Otherwise, use the
- * Unicode string rep to get the index'th char.
+ * Get Unicode or byte-array char length to calulate what 'end' means.
*/
- if (objv[1]->typePtr == &tclByteArrayType) {
- const unsigned char *string =
- Tcl_GetByteArrayFromObj(objv[1], &length);
+ length = Tcl_GetCharLength(objv[1]);
+ if (TclGetIntForIndexM(interp, objv[2], length-1, &index) != TCL_OK) {
+ return TCL_ERROR;
+ }
+
+ if ((index >= 0) && (index < length)) {
+ Tcl_UniChar ch = Tcl_GetUniChar(objv[1], index);
- if (TclGetIntForIndexM(interp, objv[2], length-1, &index) != TCL_OK){
- return TCL_ERROR;
- }
- string = Tcl_GetByteArrayFromObj(objv[1], &length);
- if ((index >= 0) && (index < length)) {
- Tcl_SetObjResult(interp, Tcl_NewByteArrayObj(string + index, 1));
- }
- } else {
/*
- * Get Unicode char length to calulate what 'end' means.
+ * If we have a ByteArray object, we're careful to generate a new
+ * bytearray for a result.
*/
- length = Tcl_GetCharLength(objv[1]);
+ if (objv[1]->typePtr == &tclByteArrayType) {
+ unsigned char uch = (unsigned char) ch;
- if (TclGetIntForIndexM(interp, objv[2], length-1, &index) != TCL_OK){
- return TCL_ERROR;
- }
- if ((index >= 0) && (index < length)) {
+ Tcl_SetObjResult(interp, Tcl_NewByteArrayObj(&uch, 1));
+ } else {
char buf[TCL_UTF_MAX];
- Tcl_UniChar ch;
- ch = Tcl_GetUniChar(objv[1], index);
length = Tcl_UniCharToUtf(ch, buf);
Tcl_SetObjResult(interp, Tcl_NewStringObj(buf, length));
}
@@ -2045,7 +2039,6 @@ StringRangeCmd(
int objc, /* Number of arguments. */
Tcl_Obj *const objv[]) /* Argument objects. */
{
- const unsigned char *string;
int length, first, last;
if (objc != 4) {
@@ -2054,22 +2047,12 @@ StringRangeCmd(
}
/*
- * If we have a ByteArray object, avoid indexing in the Utf string since
- * the byte array contains one byte per character. Otherwise, use the
- * Unicode string rep to get the range.
+ * Get the length in actual characters; this uses the unicode string rep
+ * or the byte-array rep. We then reduce it by one because 'end' refers to
+ * the last character, not one past it.
*/
- if (objv[1]->typePtr == &tclByteArrayType) {
- string = Tcl_GetByteArrayFromObj(objv[1], &length);
- length--;
- } else {
- /*
- * Get the length in actual characters.
- */
-
- string = NULL;
- length = Tcl_GetCharLength(objv[1]) - 1;
- }
+ length = Tcl_GetCharLength(objv[1]) - 1;
if (TclGetIntForIndexM(interp, objv[2], length, &first) != TCL_OK ||
TclGetIntForIndexM(interp, objv[3], length, &last) != TCL_OK) {
@@ -2083,17 +2066,7 @@ StringRangeCmd(
last = length;
}
if (last >= first) {
- if (string != NULL) {
- /*
- * Reread the string to prevent shimmering nasties.
- */
-
- string = Tcl_GetByteArrayFromObj(objv[1], &length);
- Tcl_SetObjResult(interp,
- Tcl_NewByteArrayObj(string+first, last - first + 1));
- } else {
- Tcl_SetObjResult(interp, Tcl_GetRange(objv[1], first, last));
- }
+ Tcl_SetObjResult(interp, Tcl_GetRange(objv[1], first, last));
}
return TCL_OK;
}
@@ -2785,25 +2758,12 @@ StringLenCmd(
int objc, /* Number of arguments. */
Tcl_Obj *const objv[]) /* Argument objects. */
{
- int length;
-
if (objc != 2) {
Tcl_WrongNumArgs(interp, 1, objv, "string");
return TCL_ERROR;
}
- /*
- * If we have a ByteArray object, avoid recomputing the string since the
- * byte array contains one byte per character. Otherwise, use the Unicode
- * string rep to calculate the length.
- */
-
- if (objv[1]->typePtr == &tclByteArrayType) {
- (void) Tcl_GetByteArrayFromObj(objv[1], &length);
- } else {
- length = Tcl_GetCharLength(objv[1]);
- }
- Tcl_SetObjResult(interp, Tcl_NewIntObj(length));
+ Tcl_SetObjResult(interp, Tcl_NewIntObj(Tcl_GetCharLength(objv[1])));
return TCL_OK;
}
generated by cgit v0.12 at 2024-11-05 09:54:20 (GMT)