/* compare a Tcl_DString to a const string. use negative length to find first null in string2 */
int
TSP_Util_string_compare_const(Tcl_DString* s1, char* string2, int length2) {
char* string1;
int length1;
int length;
int match;
string1 = Tcl_DStringValue(s1);
length1 = Tcl_DStringLength(s1);
length1 = Tcl_NumUtfChars(string1, length1);
length2 = Tcl_NumUtfChars(string2, length2);
length = (length1 < length2) ? length1 : length2;
match = Tcl_UtfNcmp(string1, string2, (unsigned) length);
if (match == 0) {
match = length1 - length2;
}
return match;
}
static int
HandleTclCommand(
ClientData clientData, /* Information about command to execute. */
int offset, /* Return selection bytes starting at this
* offset. */
char *buffer, /* Place to store converted selection. */
int maxBytes) /* Maximum # of bytes to store at buffer. */
{
CommandInfo *cmdInfoPtr = clientData;
int spaceNeeded, length;
#define MAX_STATIC_SIZE 100
char staticSpace[MAX_STATIC_SIZE];
char *command, *string;
Tcl_Interp *interp = cmdInfoPtr->interp;
Tcl_DString oldResult;
int extraBytes, charOffset, count, numChars;
const char *p;
/*
* We must also protect the interpreter and the command from being deleted
* too soon.
*/
Tcl_Preserve(clientData);
Tcl_Preserve(interp);
/*
* Compute the proper byte offset in the case where the last chunk split a
* character.
*/
if (offset == cmdInfoPtr->byteOffset) {
charOffset = cmdInfoPtr->charOffset;
extraBytes = strlen(cmdInfoPtr->buffer);
if (extraBytes > 0) {
strcpy(buffer, cmdInfoPtr->buffer);
maxBytes -= extraBytes;
buffer += extraBytes;
}
} else {
cmdInfoPtr->byteOffset = 0;
cmdInfoPtr->charOffset = 0;
extraBytes = 0;
charOffset = 0;
}
/*
* First, generate a command by taking the command string and appending
* the offset and maximum # of bytes.
*/
spaceNeeded = cmdInfoPtr->cmdLength + 30;
if (spaceNeeded < MAX_STATIC_SIZE) {
command = staticSpace;
} else {
command = (char *) ckalloc((unsigned) spaceNeeded);
}
sprintf(command, "%s %d %d", cmdInfoPtr->command, charOffset, maxBytes);
/*
* Execute the command. Be sure to restore the state of the interpreter
* after executing the command.
*/
Tcl_DStringInit(&oldResult);
Tcl_DStringGetResult(interp, &oldResult);
if (TkCopyAndGlobalEval(interp, command) == TCL_OK) {
string = Tcl_GetStringFromObj(Tcl_GetObjResult(interp), &length);
count = (length > maxBytes) ? maxBytes : length;
memcpy(buffer, string, (size_t) count);
buffer[count] = '\0';
/*
* Update the partial character information for the next retrieval if
* the command has not been deleted.
*/
if (cmdInfoPtr->interp != NULL) {
if (length <= maxBytes) {
cmdInfoPtr->charOffset += Tcl_NumUtfChars(string, -1);
cmdInfoPtr->buffer[0] = '\0';
} else {
p = string;
string += count;
numChars = 0;
while (p < string) {
p = Tcl_UtfNext(p);
numChars++;
}
cmdInfoPtr->charOffset += numChars;
length = p - string;
if (length > 0) {
strncpy(cmdInfoPtr->buffer, string, (size_t) length);
}
cmdInfoPtr->buffer[length] = '\0';
}
cmdInfoPtr->byteOffset += count + extraBytes;
}
count += extraBytes;
} else {
count = -1;
}
Tcl_DStringResult(interp, &oldResult);
if (command != staticSpace) {
ckfree(command);
}
Tcl_Release(clientData);
Tcl_Release(interp);
return count;
}
static int
HandleTclCommand(
ClientData clientData, /* Information about command to execute. */
int offset, /* Return selection bytes starting at this
* offset. */
char *buffer, /* Place to store converted selection. */
int maxBytes) /* Maximum # of bytes to store at buffer. */
{
CommandInfo *cmdInfoPtr = clientData;
int length;
Tcl_Obj *command;
const char *string;
Tcl_Interp *interp = cmdInfoPtr->interp;
Tcl_InterpState savedState;
int extraBytes, charOffset, count, numChars, code;
const char *p;
/*
* We must also protect the interpreter and the command from being deleted
* too soon.
*/
Tcl_Preserve(clientData);
Tcl_Preserve(interp);
/*
* Compute the proper byte offset in the case where the last chunk split a
* character.
*/
if (offset == cmdInfoPtr->byteOffset) {
charOffset = cmdInfoPtr->charOffset;
extraBytes = strlen(cmdInfoPtr->buffer);
if (extraBytes > 0) {
strcpy(buffer, cmdInfoPtr->buffer);
maxBytes -= extraBytes;
buffer += extraBytes;
}
} else {
cmdInfoPtr->byteOffset = 0;
cmdInfoPtr->charOffset = 0;
extraBytes = 0;
charOffset = 0;
}
/*
* First, generate a command by taking the command string and appending
* the offset and maximum # of bytes.
*/
command = Tcl_ObjPrintf("%s %d %d",
cmdInfoPtr->command, charOffset, maxBytes);
Tcl_IncrRefCount(command);
/*
* Execute the command. Be sure to restore the state of the interpreter
* after executing the command.
*/
savedState = Tcl_SaveInterpState(interp, TCL_OK);
code = Tcl_EvalObjEx(interp, command, TCL_EVAL_GLOBAL);
Tcl_DecrRefCount(command);
if (code == TCL_OK) {
/*
* TODO: This assumes that bytes are characters; that's not true!
*/
string = Tcl_GetStringFromObj(Tcl_GetObjResult(interp), &length);
count = (length > maxBytes) ? maxBytes : length;
memcpy(buffer, string, (size_t) count);
buffer[count] = '\0';
/*
* Update the partial character information for the next retrieval if
* the command has not been deleted.
*/
if (cmdInfoPtr->interp != NULL) {
if (length <= maxBytes) {
cmdInfoPtr->charOffset += Tcl_NumUtfChars(string, -1);
cmdInfoPtr->buffer[0] = '\0';
} else {
p = string;
string += count;
numChars = 0;
while (p < string) {
p = Tcl_UtfNext(p);
numChars++;
}
cmdInfoPtr->charOffset += numChars;
length = p - string;
if (length > 0) {
strncpy(cmdInfoPtr->buffer, string, (size_t) length);
}
cmdInfoPtr->buffer[length] = '\0';
}
cmdInfoPtr->byteOffset += count + extraBytes;
}
count += extraBytes;
} else {
/*
* Something went wrong. Log errors as background errors, and silently
* drop everything else.
*/
if (code == TCL_ERROR) {
Tcl_AddErrorInfo(interp, "\n (command handling selection)");
Tcl_BackgroundException(interp, code);
}
count = -1;
}
(void) Tcl_RestoreInterpState(interp, savedState);
Tcl_Release(clientData);
Tcl_Release(interp);
return count;
}
int
TclpLoadFile(
Tcl_Interp *interp, /* Used for error reporting. */
char *fileName, /* Name of the file containing the desired
* code. */
char *sym1, char *sym2, /* Names of two procedures to look up in
* the file's symbol table. */
Tcl_PackageInitProc **proc1Ptr,
Tcl_PackageInitProc **proc2Ptr,
/* Where to return the addresses corresponding
* to sym1 and sym2. */
ClientData *clientDataPtr) /* Filled with token for dynamically loaded
* file which will be passed back to
* TclpUnloadFile() to unload the file. */
{
CFragConnectionID connID;
Ptr dummy;
OSErr err;
CFragSymbolClass symClass;
FSSpec fileSpec;
short fragFileRef, saveFileRef;
Handle fragResource;
UInt32 offset = 0;
UInt32 length = kCFragGoesToEOF;
char packageName[255];
Str255 errName;
Tcl_DString ds;
char *native;
/*
* First thing we must do is infer the package name from the sym1
* variable. This is kind of dumb since the caller actually knows
* this value, it just doesn't give it to us.
*/
strcpy(packageName, sym1);
Tcl_UtfToLower(packageName);
*(Tcl_UtfAtIndex(packageName, Tcl_NumUtfChars(packageName, -1) - 5)) = 0;
native = Tcl_UtfToExternalDString(NULL, fileName, -1, &ds);
err = FSpLocationFromPath(strlen(native), native, &fileSpec);
Tcl_DStringFree(&ds);
if (err != noErr) {
Tcl_SetResult(interp, "could not locate shared library", TCL_STATIC);
return TCL_ERROR;
}
/*
* See if this fragment has a 'cfrg' resource. It will tell us where
* to look for the fragment in the file. If it doesn't exist we will
* assume we have a ppc frag using the whole data fork. If it does
* exist we find the frag that matches the one we are looking for and
* get the offset and size from the resource.
*/
saveFileRef = CurResFile();
SetResLoad(false);
fragFileRef = FSpOpenResFile(&fileSpec, fsRdPerm);
SetResLoad(true);
if (fragFileRef != -1) {
UseResFile(fragFileRef);
fragResource = Get1Resource(kCFragResourceType, kCFragResourceID);
HLock(fragResource);
if (ResError() == noErr) {
CfrgItem* srcItem;
long itemCount, index;
Ptr itemStart;
itemCount = (*(CfrgHeaderPtrHand)fragResource)->itemCount;
itemStart = &(*(CfrgHeaderPtrHand)fragResource)->arrayStart;
for (index = 0; index < itemCount;
index++, itemStart += srcItem->itemSize) {
srcItem = (CfrgItem*)itemStart;
if (srcItem->archType != OUR_ARCH_TYPE) continue;
if (!strncasecmp(packageName, (char *) srcItem->name + 1,
srcItem->name[0])) {
offset = srcItem->codeOffset;
length = srcItem->codeLength;
}
}
}
/*
* Close the resource file. If the extension wants to reopen the
* resource fork it should use the tclMacLibrary.c file during it's
* construction.
*/
HUnlock(fragResource);
ReleaseResource(fragResource);
CloseResFile(fragFileRef);
UseResFile(saveFileRef);
}
/*
* Now we can attempt to load the fragement using the offset & length
* obtained from the resource. We don't worry about the main entry point
* as we are going to search for specific entry points passed to us.
*/
c2pstr(packageName);
err = GetDiskFragment(&fileSpec, offset, length, (StringPtr) packageName,
kLoadCFrag, &connID, &dummy, errName);
if (err != fragNoErr) {
p2cstr(errName);
Tcl_AppendResult(interp, "couldn't load file \"", fileName,
"\": ", errName, (char *) NULL);
return TCL_ERROR;
}
c2pstr(sym1);
err = FindSymbol(connID, (StringPtr) sym1, (Ptr *) proc1Ptr, &symClass);
p2cstr((StringPtr) sym1);
if (err != fragNoErr || symClass == kDataCFragSymbol) {
Tcl_SetResult(interp,
"could not find Initialization routine in library",
TCL_STATIC);
return TCL_ERROR;
}
c2pstr(sym2);
err = FindSymbol(connID, (StringPtr) sym2, (Ptr *) proc2Ptr, &symClass);
p2cstr((StringPtr) sym2);
if (err != fragNoErr || symClass == kDataCFragSymbol) {
*proc2Ptr = NULL;
}
*clientDataPtr = (ClientData) connID;
return TCL_OK;
}
static int
ConfigureText(
Tcl_Interp *interp, /* Interpreter for error reporting. */
Tk_Canvas canvas, /* Canvas containing itemPtr. */
Tk_Item *itemPtr, /* Rectangle item to reconfigure. */
int objc, /* Number of elements in objv. */
Tcl_Obj *const objv[], /* Arguments describing things to configure. */
int flags) /* Flags to pass to Tk_ConfigureWidget. */
{
TextItem *textPtr = (TextItem *) itemPtr;
XGCValues gcValues;
GC newGC, newSelGC;
unsigned long mask;
Tk_Window tkwin;
Tk_CanvasTextInfo *textInfoPtr = textPtr->textInfoPtr;
XColor *selBgColorPtr;
XColor *color;
Pixmap stipple;
Tk_State state;
tkwin = Tk_CanvasTkwin(canvas);
if (TCL_OK != Tk_ConfigureWidget(interp, tkwin, configSpecs, objc,
(const char **) objv, (char *) textPtr, flags|TK_CONFIG_OBJS)) {
return TCL_ERROR;
}
/*
* A few of the options require additional processing, such as graphics
* contexts.
*/
state = itemPtr->state;
if (textPtr->activeColor != NULL || textPtr->activeStipple != None) {
itemPtr->redraw_flags |= TK_ITEM_STATE_DEPENDANT;
} else {
itemPtr->redraw_flags &= ~TK_ITEM_STATE_DEPENDANT;
}
if (state == TK_STATE_NULL) {
state = Canvas(canvas)->canvas_state;
}
color = textPtr->color;
stipple = textPtr->stipple;
if (Canvas(canvas)->currentItemPtr == itemPtr) {
if (textPtr->activeColor != NULL) {
color = textPtr->activeColor;
}
if (textPtr->activeStipple != None) {
stipple = textPtr->activeStipple;
}
} else if (state == TK_STATE_DISABLED) {
if (textPtr->disabledColor != NULL) {
color = textPtr->disabledColor;
}
if (textPtr->disabledStipple != None) {
stipple = textPtr->disabledStipple;
}
}
newGC = newSelGC = NULL;
if (textPtr->tkfont != NULL) {
gcValues.font = Tk_FontId(textPtr->tkfont);
mask = GCFont;
if (color != NULL) {
gcValues.foreground = color->pixel;
mask |= GCForeground;
if (stipple != None) {
gcValues.stipple = stipple;
gcValues.fill_style = FillStippled;
mask |= GCStipple|GCFillStyle;
}
newGC = Tk_GetGC(tkwin, mask, &gcValues);
}
mask &= ~(GCTile|GCFillStyle|GCStipple);
if (stipple != None) {
gcValues.stipple = stipple;
gcValues.fill_style = FillStippled;
mask |= GCStipple|GCFillStyle;
}
if (textInfoPtr->selFgColorPtr != NULL) {
gcValues.foreground = textInfoPtr->selFgColorPtr->pixel;
}
newSelGC = Tk_GetGC(tkwin, mask|GCForeground, &gcValues);
}
if (textPtr->gc != NULL) {
Tk_FreeGC(Tk_Display(tkwin), textPtr->gc);
}
textPtr->gc = newGC;
if (textPtr->selTextGC != NULL) {
Tk_FreeGC(Tk_Display(tkwin), textPtr->selTextGC);
}
textPtr->selTextGC = newSelGC;
selBgColorPtr = Tk_3DBorderColor(textInfoPtr->selBorder);
if (Tk_3DBorderColor(textInfoPtr->insertBorder)->pixel
== selBgColorPtr->pixel) {
if (selBgColorPtr->pixel == BlackPixelOfScreen(Tk_Screen(tkwin))) {
gcValues.foreground = WhitePixelOfScreen(Tk_Screen(tkwin));
} else {
gcValues.foreground = BlackPixelOfScreen(Tk_Screen(tkwin));
}
newGC = Tk_GetGC(tkwin, GCForeground, &gcValues);
} else {
newGC = NULL;
}
if (textPtr->cursorOffGC != NULL) {
Tk_FreeGC(Tk_Display(tkwin), textPtr->cursorOffGC);
}
textPtr->cursorOffGC = newGC;
/*
* If the text was changed, move the selection and insertion indices to
* keep them inside the item.
*/
textPtr->numBytes = strlen(textPtr->text);
textPtr->numChars = Tcl_NumUtfChars(textPtr->text, textPtr->numBytes);
if (textInfoPtr->selItemPtr == itemPtr) {
if (textInfoPtr->selectFirst >= textPtr->numChars) {
textInfoPtr->selItemPtr = NULL;
} else {
if (textInfoPtr->selectLast >= textPtr->numChars) {
textInfoPtr->selectLast = textPtr->numChars - 1;
}
if ((textInfoPtr->anchorItemPtr == itemPtr)
&& (textInfoPtr->selectAnchor >= textPtr->numChars)) {
textInfoPtr->selectAnchor = textPtr->numChars - 1;
}
}
}
if (textPtr->insertPos >= textPtr->numChars) {
textPtr->insertPos = textPtr->numChars;
}
/*
* Restrict so that 0.0 <= angle < 360.0, and then recompute the cached
* sine and cosine of the angle. Note that fmod() can produce negative
* results, and we try to avoid negative zero as well.
*/
textPtr->angle = fmod(textPtr->angle, 360.0);
if (textPtr->angle < 0.0) {
textPtr->angle += 360.0;
}
if (textPtr->angle == 0.0) {
textPtr->angle = 0.0;
}
textPtr->sine = sin(textPtr->angle * PI/180.0);
textPtr->cosine = cos(textPtr->angle * PI/180.0);
ComputeTextBbox(canvas, textPtr);
return TCL_OK;
}
static void
TextInsert(
Tk_Canvas canvas, /* Canvas containing text item. */
Tk_Item *itemPtr, /* Text item to be modified. */
int index, /* Character index before which string is to
* be inserted. */
Tcl_Obj *obj) /* New characters to be inserted. */
{
TextItem *textPtr = (TextItem *) itemPtr;
int byteIndex, charsAdded;
TkSizeT byteCount;
char *newStr, *text;
const char *string;
Tk_CanvasTextInfo *textInfoPtr = textPtr->textInfoPtr;
string = TkGetStringFromObj(obj, &byteCount);
text = textPtr->text;
if (index < 0) {
index = 0;
}
if (index > textPtr->numChars) {
index = textPtr->numChars;
}
byteIndex = Tcl_UtfAtIndex(text, index) - text;
byteCount = strlen(string);
if (byteCount == 0) {
return;
}
newStr = ckalloc(textPtr->numBytes + byteCount + 1);
memcpy(newStr, text, byteIndex);
strcpy(newStr + byteIndex, string);
strcpy(newStr + byteIndex + byteCount, text + byteIndex);
ckfree(text);
textPtr->text = newStr;
charsAdded = Tcl_NumUtfChars(string, byteCount);
textPtr->numChars += charsAdded;
textPtr->numBytes += byteCount;
/*
* Inserting characters invalidates indices such as those for the
* selection and cursor. Update the indices appropriately.
*/
if (textInfoPtr->selItemPtr == itemPtr) {
if (textInfoPtr->selectFirst >= index) {
textInfoPtr->selectFirst += charsAdded;
}
if (textInfoPtr->selectLast >= index) {
textInfoPtr->selectLast += charsAdded;
}
if ((textInfoPtr->anchorItemPtr == itemPtr)
&& (textInfoPtr->selectAnchor >= index)) {
textInfoPtr->selectAnchor += charsAdded;
}
}
if (textPtr->insertPos >= index) {
textPtr->insertPos += charsAdded;
}
ComputeTextBbox(canvas, textPtr);
}
