static char *convert_element(char *src, char *dst) { int flags; Tcl_ScanElement(src, &flags); Tcl_ConvertElement(src, dst, flags); return dst; }
/* *---------------------------------------------------------------------- * * Tcl_Merge -- * * Given a collection of strings, merge them together into a * single string that has proper Tcl list structured (i.e. * Tcl_SplitList may be used to retrieve strings equal to the * original elements, and Tcl_Eval will parse the string back * into its original elements). * * Results: * The return value is the address of a dynamically-allocated * string containing the merged list. * * Side effects: * None. * *---------------------------------------------------------------------- */ unsigned char * Tcl_Merge (mem_pool_t *pool, int argc, /* How many strings to merge. */ unsigned char **argv) /* Array of string values. */ { # define LOCAL_SIZE 20 int localFlags[LOCAL_SIZE], *flagPtr; int numChars; unsigned char *result; register unsigned char *dst; int i; /* * Pass 1: estimate space, gather flags. */ if (argc <= LOCAL_SIZE) { flagPtr = localFlags; } else { flagPtr = (int*) mem_alloc (pool, (unsigned) argc*sizeof(int)); } numChars = 1; for (i = 0; i < argc; i++) { numChars += Tcl_ScanElement(argv[i], &flagPtr[i]) + 1; } /* * Pass two: copy into the result area. */ result = (unsigned char *)mem_alloc (pool, numChars); dst = result; for (i = 0; i < argc; i++) { numChars = Tcl_ConvertElement(argv[i], dst, flagPtr[i]); dst += numChars; *dst = ' '; dst++; } if (dst == result) { *dst = 0; } else { dst[-1] = 0; } if (flagPtr != localFlags) { mem_free (flagPtr); } return result; }
/* Remove the default msg/dcc/fil commands from the Tcl interpreter */ void rem_builtins(tcl_bind_list_t *table, cmd_t *cc) { int k, i; char p[1024], *l; for (i = 0; cc[i].name; i++) { egg_snprintf(p, sizeof p, "*%s:%s", table->name, cc[i].funcname ? cc[i].funcname : cc[i].name); l = nmalloc(Tcl_ScanElement(p, &k)); Tcl_ConvertElement(p, l, k | TCL_DONT_USE_BRACES); Tcl_DeleteCommand(interp, p); unbind_bind_entry(table, cc[i].flags, cc[i].name, l); nfree(l); } }
/* Bring the default msg/dcc/fil commands into the Tcl interpreter */ void add_builtins(tcl_bind_list_t *tl, cmd_t *cc) { int k, i; char p[1024], *l; cd_tcl_cmd table[2]; table[0].name = p; table[0].callback = tl->func; table[1].name = NULL; for (i = 0; cc[i].name; i++) { egg_snprintf(p, sizeof p, "*%s:%s", tl->name, cc[i].funcname ? cc[i].funcname : cc[i].name); l = nmalloc(Tcl_ScanElement(p, &k)); Tcl_ConvertElement(p, l, k | TCL_DONT_USE_BRACES); table[0].cdata = (void *) cc[i].func; add_cd_tcl_cmds(table); bind_bind_entry(tl, cc[i].flags, cc[i].name, l); nfree(l); } }
void Tcl_AppendElement( Tcl_Interp *interp /* Interpreter whose result is to be extended. */ , unsigned char *string /* String to convert to list element and add to result. */ , int noSep /* If non-zero, then don't output a * space character before this element, * even if the element isn't the first * thing in the output buffer. */ ) { register Interp *iPtr = (Interp *) interp; int size, flags; unsigned char *dst; /* * See how much space is needed, and grow the append buffer if * needed to accommodate the list element. */ size = Tcl_ScanElement(string, &flags) + 1; if ((iPtr->result != iPtr->appendResult) || ((size + iPtr->appendUsed) >= iPtr->appendAvl)) { SetupAppendBuffer(iPtr, size+iPtr->appendUsed); } /* * Convert the string into a list element and copy it to the * buffer that's forming. */ dst = iPtr->appendResult + iPtr->appendUsed; if (!noSep && (iPtr->appendUsed != 0)) { iPtr->appendUsed++; *dst = ' '; dst++; } iPtr->appendUsed += Tcl_ConvertElement(string, dst, flags); }
/*ARGSUSED*/ static int EmbWinLayoutProc( TkText *textPtr, /* Text widget being layed out. */ TkTextIndex *indexPtr, /* Identifies first character in chunk. */ TkTextSegment *ewPtr, /* Segment corresponding to indexPtr. */ int offset, /* Offset within segPtr corresponding to * indexPtr (always 0). */ int maxX, /* Chunk must not occupy pixels at this * position or higher. */ int maxChars, /* Chunk must not include more than this many * characters. */ int noCharsYet, /* Non-zero means no characters have been * assigned to this line yet. */ TkWrapMode wrapMode, /* Wrap mode to use for line: * TEXT_WRAPMODE_CHAR, TEXT_WRAPMODE_NONE, or * TEXT_WRAPMODE_WORD. */ register TkTextDispChunk *chunkPtr) /* Structure to fill in with information about * this chunk. The x field has already been * set by the caller. */ { int width, height; TkTextEmbWindowClient *client; if (offset != 0) { Tcl_Panic("Non-zero offset in EmbWinLayoutProc"); } client = EmbWinGetClient(textPtr, ewPtr); if (client == NULL) { ewPtr->body.ew.tkwin = NULL; } else { ewPtr->body.ew.tkwin = client->tkwin; } if ((ewPtr->body.ew.tkwin == NULL) && (ewPtr->body.ew.create != NULL)) { int code, isNew; Tk_Window ancestor; Tcl_HashEntry *hPtr; const char *before, *string; Tcl_DString name, buf, *dsPtr = NULL; before = ewPtr->body.ew.create; /* * Find everything up to the next % character and append it to the * result string. */ string = before; while (*string != 0) { if ((*string == '%') && (string[1] == '%' || string[1] == 'W')) { if (dsPtr == NULL) { Tcl_DStringInit(&buf); dsPtr = &buf; } if (string != before) { Tcl_DStringAppend(dsPtr, before, (int) (string-before)); before = string; } if (string[1] == '%') { Tcl_DStringAppend(dsPtr, "%", 1); } else { /* * Substitute string as proper Tcl list element. */ int spaceNeeded, cvtFlags, length; const char *str = Tk_PathName(textPtr->tkwin); spaceNeeded = Tcl_ScanElement(str, &cvtFlags); length = Tcl_DStringLength(dsPtr); Tcl_DStringSetLength(dsPtr, length + spaceNeeded); spaceNeeded = Tcl_ConvertElement(str, Tcl_DStringValue(dsPtr) + length, cvtFlags | TCL_DONT_USE_BRACES); Tcl_DStringSetLength(dsPtr, length + spaceNeeded); } before += 2; string++; } string++; } /* * The window doesn't currently exist. Create it by evaluating the * creation script. The script must return the window's path name: * look up that name to get back to the window token. Then register * ourselves as the geometry manager for the window. */ if (dsPtr != NULL) { Tcl_DStringAppend(dsPtr, before, (int) (string-before)); code = Tcl_GlobalEval(textPtr->interp, Tcl_DStringValue(dsPtr)); Tcl_DStringFree(dsPtr); } else { code = Tcl_GlobalEval(textPtr->interp, ewPtr->body.ew.create); } if (code != TCL_OK) { createError: Tcl_BackgroundException(textPtr->interp, code); goto gotWindow; } Tcl_DStringInit(&name); Tcl_DStringAppend(&name, Tcl_GetStringResult(textPtr->interp), -1); Tcl_ResetResult(textPtr->interp); ewPtr->body.ew.tkwin = Tk_NameToWindow(textPtr->interp, Tcl_DStringValue(&name), textPtr->tkwin); Tcl_DStringFree(&name); if (ewPtr->body.ew.tkwin == NULL) { goto createError; } for (ancestor = textPtr->tkwin; ; ancestor = Tk_Parent(ancestor)) { if (ancestor == Tk_Parent(ewPtr->body.ew.tkwin)) { break; } if (Tk_TopWinHierarchy(ancestor)) { badMaster: Tcl_AppendResult(textPtr->interp, "can't embed ", Tk_PathName(ewPtr->body.ew.tkwin), " relative to ", Tk_PathName(textPtr->tkwin), NULL); Tcl_BackgroundError(textPtr->interp); ewPtr->body.ew.tkwin = NULL; goto gotWindow; } } if (Tk_TopWinHierarchy(ewPtr->body.ew.tkwin) || (textPtr->tkwin == ewPtr->body.ew.tkwin)) { goto badMaster; } if (client == NULL) { /* * We just used a '-create' script to make a new window, which we * now need to add to our client list. */ client = (TkTextEmbWindowClient *) ckalloc(sizeof(TkTextEmbWindowClient)); client->next = ewPtr->body.ew.clients; client->textPtr = textPtr; client->tkwin = NULL; client->chunkCount = 0; client->displayed = 0; client->parent = ewPtr; ewPtr->body.ew.clients = client; } client->tkwin = ewPtr->body.ew.tkwin; Tk_ManageGeometry(client->tkwin, &textGeomType, client); Tk_CreateEventHandler(client->tkwin, StructureNotifyMask, EmbWinStructureProc, client); /* * Special trick! Must enter into the hash table *after* calling * Tk_ManageGeometry: if the window was already managed elsewhere in * this text, the Tk_ManageGeometry call will cause the entry to be * removed, which could potentially lose the new entry. */ hPtr = Tcl_CreateHashEntry(&textPtr->sharedTextPtr->windowTable, Tk_PathName(client->tkwin), &isNew); Tcl_SetHashValue(hPtr, ewPtr); } /* * See if there's room for this window on this line. */ gotWindow: if (ewPtr->body.ew.tkwin == NULL) { width = 0; height = 0; } else { width = Tk_ReqWidth(ewPtr->body.ew.tkwin) + 2*ewPtr->body.ew.padX; height = Tk_ReqHeight(ewPtr->body.ew.tkwin) + 2*ewPtr->body.ew.padY; } if ((width > (maxX - chunkPtr->x)) && !noCharsYet && (textPtr->wrapMode != TEXT_WRAPMODE_NONE)) { return 0; } /* * Fill in the chunk structure. */ chunkPtr->displayProc = TkTextEmbWinDisplayProc; chunkPtr->undisplayProc = EmbWinUndisplayProc; chunkPtr->measureProc = NULL; chunkPtr->bboxProc = EmbWinBboxProc; chunkPtr->numBytes = 1; if (ewPtr->body.ew.align == ALIGN_BASELINE) { chunkPtr->minAscent = height - ewPtr->body.ew.padY; chunkPtr->minDescent = ewPtr->body.ew.padY; chunkPtr->minHeight = 0; } else { chunkPtr->minAscent = 0; chunkPtr->minDescent = 0; chunkPtr->minHeight = height; } chunkPtr->width = width; chunkPtr->breakIndex = -1; chunkPtr->breakIndex = 1; chunkPtr->clientData = ewPtr; if (client != NULL) { client->chunkCount += 1; } return 1; }