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Diffstat (limited to 'generic/tkImgPhoto.c')
-rw-r--r--generic/tkImgPhoto.c175
1 files changed, 84 insertions, 91 deletions
diff --git a/generic/tkImgPhoto.c b/generic/tkImgPhoto.c
index 3eff18d..3f25984 100644
--- a/generic/tkImgPhoto.c
+++ b/generic/tkImgPhoto.c
@@ -504,7 +504,7 @@ ImgPhotoCmd(
* TODO: Modifying result is bad!
*/
- Tcl_ListObjAppendElement(interp, Tcl_GetObjResult(interp),
+ Tcl_ListObjAppendElement(NULL, Tcl_GetObjResult(interp),
masterPtr->dataString);
} else {
Tcl_AppendResult(interp, " {}", NULL);
@@ -518,7 +518,7 @@ ImgPhotoCmd(
* TODO: Modifying result is bad!
*/
- Tcl_ListObjAppendElement(interp, Tcl_GetObjResult(interp),
+ Tcl_ListObjAppendElement(NULL, Tcl_GetObjResult(interp),
masterPtr->format);
} else {
Tcl_AppendResult(interp, " {}", NULL);
@@ -1467,10 +1467,16 @@ ParseSubcommandOptions(
int objc, /* Number of arguments in objv[]. */
Tcl_Obj *const objv[]) /* Arguments to be parsed. */
{
+ static const char *const compositingRules[] = {
+ "overlay", "set", /* Note that these must match the
+ * TK_PHOTO_COMPOSITE_* constants. */
+ NULL
+ };
int index, c, bit, currentBit, length;
int values[4], numValues, maxValues, argIndex;
- const char *option;
+ const char *option, *expandedOption, *needed;
const char *const *listPtr;
+ Tcl_Obj *msgObj;
for (index = *optIndexPtr; index < objc; *optIndexPtr = ++index) {
/*
@@ -1478,7 +1484,7 @@ ParseSubcommandOptions(
* optPtr->name.
*/
- option = Tcl_GetStringFromObj(objv[index], &length);
+ expandedOption = option = Tcl_GetStringFromObj(objv[index], &length);
if (option[0] != '-') {
if (optPtr->name == NULL) {
optPtr->name = objv[index];
@@ -1497,9 +1503,9 @@ ParseSubcommandOptions(
for (listPtr = optionNames; *listPtr != NULL; ++listPtr) {
if ((c == *listPtr[0])
&& (strncmp(option, *listPtr, (size_t) length) == 0)) {
+ expandedOption = *listPtr;
if (bit != 0) {
- bit = 0; /* An ambiguous option. */
- break;
+ goto unknownOrAmbiguousOption;
}
bit = currentBit;
}
@@ -1512,24 +1518,7 @@ ParseSubcommandOptions(
*/
if ((allowedOptions & bit) == 0) {
- Tcl_ResetResult(interp);
- Tcl_AppendResult(interp, "unrecognized option \"",
- Tcl_GetString(objv[index]), "\": must be ", NULL);
- bit = 1;
- for (listPtr = optionNames; *listPtr != NULL; ++listPtr) {
- if ((allowedOptions & bit) != 0) {
- if ((allowedOptions & (bit - 1)) != 0) {
- Tcl_AppendResult(interp, ", ", NULL);
- if ((allowedOptions & ~((bit << 1) - 1)) == 0) {
- Tcl_AppendResult(interp, "or ", NULL);
- }
- }
- Tcl_AppendResult(interp, *listPtr, NULL);
- }
- bit <<= 1;
- }
- Tcl_SetErrorCode(interp, "TK", "LOOKUP", "PHOTO_OPTION", NULL);
- return TCL_ERROR;
+ goto unknownOrAmbiguousOption;
}
/*
@@ -1542,18 +1531,13 @@ ParseSubcommandOptions(
* The -background option takes a single XColor value.
*/
- if (index + 1 < objc) {
- *optIndexPtr = ++index;
- optPtr->background = Tk_GetColor(interp, Tk_MainWindow(interp),
- Tk_GetUid(Tcl_GetString(objv[index])));
- if (!optPtr->background) {
- return TCL_ERROR;
- }
- } else {
- Tcl_SetObjResult(interp, Tcl_NewStringObj(
- "the \"-background\" option requires a value", -1));
- Tcl_SetErrorCode(interp, "TK", "PHOTO", "MISSING_VALUE",
- NULL);
+ if (index + 1 >= objc) {
+ goto oneValueRequired;
+ }
+ *optIndexPtr = ++index;
+ optPtr->background = Tk_GetColor(interp, Tk_MainWindow(interp),
+ Tk_GetUid(Tcl_GetString(objv[index])));
+ if (!optPtr->background) {
return TCL_ERROR;
}
} else if (bit == OPT_FORMAT) {
@@ -1562,50 +1546,31 @@ ParseSubcommandOptions(
* parsing this is outside the scope of this function.
*/
- if (index + 1 < objc) {
- *optIndexPtr = ++index;
- optPtr->format = objv[index];
- } else {
- Tcl_SetObjResult(interp, Tcl_NewStringObj(
- "the \"-format\" option requires a value", -1));
- Tcl_SetErrorCode(interp, "TK", "PHOTO", "MISSING_VALUE",
- NULL);
- return TCL_ERROR;
+ if (index + 1 >= objc) {
+ goto oneValueRequired;
}
+ *optIndexPtr = ++index;
+ optPtr->format = objv[index];
} else if (bit == OPT_COMPOSITE) {
/*
* The -compositingrule option takes a single value from a
* well-known set.
*/
- if (index + 1 < objc) {
- /*
- * Note that these must match the TK_PHOTO_COMPOSITE_*
- * constants.
- */
-
- static const char *const compositingRules[] = {
- "overlay", "set", NULL
- };
-
- index++;
- if (Tcl_GetIndexFromObj(interp, objv[index], compositingRules,
- "compositing rule", 0, &optPtr->compositingRule)
- != TCL_OK) {
- return TCL_ERROR;
- }
- *optIndexPtr = index;
- } else {
- Tcl_SetObjResult(interp, Tcl_NewStringObj(
- "the \"-compositingrule\" option requires a value",
- -1));
- Tcl_SetErrorCode(interp, "TK", "PHOTO", "MISSING_VALUE",
- NULL);
+ if (index + 1 >= objc) {
+ goto oneValueRequired;
+ }
+ index++;
+ if (Tcl_GetIndexFromObj(interp, objv[index], compositingRules,
+ "compositing rule", 0, &optPtr->compositingRule)
+ != TCL_OK) {
return TCL_ERROR;
}
+ *optIndexPtr = index;
} else if ((bit != OPT_SHRINK) && (bit != OPT_GRAYSCALE)) {
const char *val;
- maxValues = ((bit == OPT_FROM) || (bit == OPT_TO))? 4: 2;
+
+ maxValues = ((bit == OPT_FROM) || (bit == OPT_TO)) ? 4 : 2;
argIndex = index + 1;
for (numValues = 0; numValues < maxValues; ++numValues) {
if (argIndex >= objc) {
@@ -1625,12 +1590,7 @@ ParseSubcommandOptions(
}
if (numValues == 0) {
- Tcl_SetObjResult(interp, Tcl_ObjPrintf(
- "the \"%s\" option requires one %s integer values",
- option, (maxValues == 2) ? "or two": "to four"));
- Tcl_SetErrorCode(interp, "TK", "PHOTO", "MISSING_VALUE",
- NULL);
- return TCL_ERROR;
+ goto manyValuesRequired;
}
*optIndexPtr = (index += numValues);
@@ -1654,11 +1614,8 @@ ParseSubcommandOptions(
case OPT_FROM:
if ((values[0] < 0) || (values[1] < 0) || ((numValues > 2)
&& ((values[2] < 0) || (values[3] < 0)))) {
- Tcl_SetObjResult(interp, Tcl_NewStringObj(
- "value(s) for the -from option must be"
- " non-negative", -1));
- Tcl_SetErrorCode(interp, "TK", "PHOTO", "BAD_FROM", NULL);
- return TCL_ERROR;
+ needed = "non-negative";
+ goto numberOutOfRange;
}
if (numValues <= 2) {
optPtr->fromX = values[0];
@@ -1679,11 +1636,8 @@ ParseSubcommandOptions(
case OPT_TO:
if ((values[0] < 0) || (values[1] < 0) || ((numValues > 2)
&& ((values[2] < 0) || (values[3] < 0)))) {
- Tcl_SetObjResult(interp, Tcl_NewStringObj(
- "value(s) for the -to option must be non-negative",
- -1));
- Tcl_SetErrorCode(interp, "TK", "PHOTO", "BAD_TO", NULL);
- return TCL_ERROR;
+ needed = "non-negative";
+ goto numberOutOfRange;
}
if (numValues <= 2) {
optPtr->toX = values[0];
@@ -1699,11 +1653,8 @@ ParseSubcommandOptions(
break;
case OPT_ZOOM:
if ((values[0] <= 0) || (values[1] <= 0)) {
- Tcl_SetObjResult(interp, Tcl_NewStringObj(
- "value(s) for the -zoom option must be positive",
- -1));
- Tcl_SetErrorCode(interp, "TK", "PHOTO", "BAD_ZOOM", NULL);
- return TCL_ERROR;
+ needed = "positive";
+ goto numberOutOfRange;
}
optPtr->zoomX = values[0];
optPtr->zoomY = values[1];
@@ -1717,8 +1668,50 @@ ParseSubcommandOptions(
optPtr->options |= bit;
}
-
return TCL_OK;
+
+ /*
+ * Exception generation.
+ */
+
+ oneValueRequired:
+ Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+ "the \"%s\" option requires a value", expandedOption));
+ Tcl_SetErrorCode(interp, "TK", "PHOTO", "MISSING_VALUE", NULL);
+ return TCL_ERROR;
+
+ manyValuesRequired:
+ Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+ "the \"%s\" option requires one %s integer values",
+ expandedOption, (maxValues == 2) ? "or two": "to four"));
+ Tcl_SetErrorCode(interp, "TK", "PHOTO", "MISSING_VALUE", NULL);
+ return TCL_ERROR;
+
+ numberOutOfRange:
+ Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+ "value(s) for the %s option must be %s", expandedOption, needed));
+ Tcl_SetErrorCode(interp, "TK", "PHOTO", "BAD_VALUE", NULL);
+ return TCL_ERROR;
+
+ unknownOrAmbiguousOption:
+ msgObj = Tcl_ObjPrintf("unrecognized option \"%s\": must be ", option);
+ bit = 1;
+ for (listPtr = optionNames; *listPtr != NULL; ++listPtr) {
+ if (allowedOptions & bit) {
+ if (allowedOptions & (bit - 1)) {
+ if (allowedOptions & ~((bit << 1) - 1)) {
+ Tcl_AppendToObj(msgObj, ", ", -1);
+ } else {
+ Tcl_AppendToObj(msgObj, ", or ", -1);
+ }
+ }
+ Tcl_AppendToObj(msgObj, *listPtr, -1);
+ }
+ bit <<= 1;
+ }
+ Tcl_SetObjResult(interp, msgObj);
+ Tcl_SetErrorCode(interp, "TK", "PHOTO", "BAD_OPTION", NULL);
+ return TCL_ERROR;
}
/*
generated by cgit v0.12 at 2024-11-08 18:19:11 (GMT)