File: | AsciiSrc.c |
Location: | line 1146, column 7 |
Description: | Access to field 'prev' results in a dereference of a null pointer (loaded from variable 'first') |
1 | /* | |||
2 | ||||
3 | Copyright (c) 1989, 1994 X Consortium | |||
4 | ||||
5 | Permission is hereby granted, free of charge, to any person obtaining a copy | |||
6 | of this software and associated documentation files (the "Software"), to deal | |||
7 | in the Software without restriction, including without limitation the rights | |||
8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |||
9 | copies of the Software, and to permit persons to whom the Software is | |||
10 | furnished to do so, subject to the following conditions: | |||
11 | ||||
12 | The above copyright notice and this permission notice shall be included in | |||
13 | all copies or substantial portions of the Software. | |||
14 | ||||
15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |||
16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |||
17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |||
18 | X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN | |||
19 | AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |||
20 | CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | |||
21 | ||||
22 | Except as contained in this notice, the name of the X Consortium shall not be | |||
23 | used in advertising or otherwise to promote the sale, use or other dealings | |||
24 | in this Software without prior written authorization from the X Consortium. | |||
25 | ||||
26 | */ | |||
27 | ||||
28 | /* | |||
29 | * AsciiSrc.c - AsciiSrc object. (For use with the text widget). | |||
30 | * | |||
31 | */ | |||
32 | ||||
33 | #ifdef HAVE_CONFIG_H1 | |||
34 | #include "config.h" | |||
35 | #endif | |||
36 | #include <X11/Xaw3d/Xaw3dP.h> | |||
37 | #include <X11/IntrinsicP.h> | |||
38 | #include <stdio.h> | |||
39 | #include <ctype.h> | |||
40 | #include <errno(*__error()).h> | |||
41 | #include <X11/StringDefs.h> | |||
42 | #include <X11/Xos.h> | |||
43 | #include <stdlib.h> | |||
44 | #include <X11/Xfuncs.h> | |||
45 | #include <X11/Xaw3d/XawInit.h> | |||
46 | #include <X11/Xaw3d/AsciiSrcP.h> | |||
47 | #include <X11/Xmu/Misc.h> | |||
48 | #include <X11/Xmu/CharSet.h> | |||
49 | #ifdef XAW_INTERNATIONALIZATION1 | |||
50 | #include <X11/Xaw3d/MultiSrcP.h> | |||
51 | #endif | |||
52 | ||||
53 | ||||
54 | #if (defined(ASCII_STRING) || defined(ASCII_DISK)) | |||
55 | # include <X11/Xaw3d/AsciiText.h> /* for Widget Classes. */ | |||
56 | #endif | |||
57 | ||||
58 | ||||
59 | /**************************************************************** | |||
60 | * | |||
61 | * Full class record constant | |||
62 | * | |||
63 | ****************************************************************/ | |||
64 | ||||
65 | /* Private Data */ | |||
66 | ||||
67 | static int magic_value = MAGIC_VALUE((XawTextPosition) -1); | |||
68 | ||||
69 | #define offset(field) XtOffsetOf(AsciiSrcRec, ascii_src.field)__builtin_offsetof(AsciiSrcRec, ascii_src.field) | |||
70 | ||||
71 | static XtResource resources[] = { | |||
72 | {XtNstring((char*)&XtStrings[733]), XtCString((char*)&XtStrings[1416]), XtRString((char*)&XtStrings[1797]), sizeof (char *), | |||
73 | offset(string), XtRString((char*)&XtStrings[1797]), NULL((void*)0)}, | |||
74 | {XtNtype"type", XtCType"Type", XtRAsciiType"AsciiType", sizeof (XawAsciiType), | |||
75 | offset(type), XtRImmediate((char*)&XtStrings[1695]), (XtPointer)XawAsciiString}, | |||
76 | {XtNdataCompression"dataCompression", XtCDataCompression"DataCompression", XtRBoolean((char*)&XtStrings[1561]), sizeof (Boolean), | |||
77 | offset(data_compression), XtRImmediate((char*)&XtStrings[1695]), (XtPointer) TRUE1}, | |||
78 | {XtNpieceSize"pieceSize", XtCPieceSize"PieceSize", XtRInt((char*)&XtStrings[1718]), sizeof (XawTextPosition), | |||
79 | offset(piece_size), XtRImmediate((char*)&XtStrings[1695]), (XtPointer) BUFSIZ1024}, | |||
80 | {XtNcallback((char*)&XtStrings[136]), XtCCallback((char*)&XtStrings[952]), XtRCallback((char*)&XtStrings[1569]), sizeof(XtPointer), | |||
81 | offset(callback), XtRCallback((char*)&XtStrings[1569]), (XtPointer)NULL((void*)0)}, | |||
82 | {XtNuseStringInPlace"useStringInPlace", XtCUseStringInPlace"UseStringInPlace", XtRBoolean((char*)&XtStrings[1561]), sizeof (Boolean), | |||
83 | offset(use_string_in_place), XtRImmediate((char*)&XtStrings[1695]), (XtPointer) FALSE0}, | |||
84 | {XtNlength((char*)&XtStrings[435]), XtCLength((char*)&XtStrings[1157]), XtRInt((char*)&XtStrings[1718]), sizeof (int), | |||
85 | offset(ascii_length), XtRInt((char*)&XtStrings[1718]), (XtPointer) &magic_value}, | |||
86 | ||||
87 | #ifdef ASCII_DISK | |||
88 | {XtNfile((char*)&XtStrings[194]), XtCFile((char*)&XtStrings[1012]), XtRString((char*)&XtStrings[1797]), sizeof (String), | |||
89 | offset(filename), XtRString((char*)&XtStrings[1797]), NULL((void*)0)}, | |||
90 | #endif /* ASCII_DISK */ | |||
91 | }; | |||
92 | #undef offset | |||
93 | ||||
94 | static XawTextPosition Scan(Widget, XawTextPosition, XawTextScanType, | |||
95 | XawTextScanDirection, int, Boolean); | |||
96 | static XawTextPosition Search(Widget, XawTextPosition, XawTextScanDirection, | |||
97 | XawTextBlock *); | |||
98 | static XawTextPosition ReadText(Widget, XawTextPosition, XawTextBlock *, int); | |||
99 | static int ReplaceText(Widget, XawTextPosition, XawTextPosition, XawTextBlock *); | |||
100 | static Piece * FindPiece(AsciiSrcObject, XawTextPosition, XawTextPosition *); | |||
101 | static Piece * AllocNewPiece(AsciiSrcObject, Piece *); | |||
102 | static FILE * InitStringOrFile(AsciiSrcObject, Boolean); | |||
103 | static void FreeAllPieces(AsciiSrcObject); | |||
104 | static void RemovePiece(AsciiSrcObject, Piece *); | |||
105 | static void BreakPiece(AsciiSrcObject, Piece *); | |||
106 | static void LoadPieces(AsciiSrcObject, FILE *, char *); | |||
107 | static void RemoveOldStringOrFile(AsciiSrcObject, Boolean); | |||
108 | static void CvtStringToAsciiType(XrmValuePtr, Cardinal *, XrmValuePtr, XrmValuePtr); | |||
109 | static void ClassInitialize(void); | |||
110 | static void Initialize(Widget, Widget, ArgList, Cardinal *); | |||
111 | static void Destroy(Widget); | |||
112 | static void GetValuesHook(Widget, ArgList, Cardinal *); | |||
113 | static String MyStrncpy(char *, char *, int); | |||
114 | static String StorePiecesInString(AsciiSrcObject); | |||
115 | static Boolean SetValues(Widget, Widget, Widget, ArgList, Cardinal *); | |||
116 | static Boolean WriteToFile(_Xconstconst _XtStringchar*, _Xconstconst _XtStringchar*); | |||
117 | ||||
118 | ||||
119 | #define superclass(&textSrcClassRec) (&textSrcClassRec) | |||
120 | AsciiSrcClassRec asciiSrcClassRec = { | |||
121 | { | |||
122 | /* core_class fields */ | |||
123 | /* superclass */ (WidgetClass) superclass(&textSrcClassRec), | |||
124 | /* class_name */ "AsciiSrc", | |||
125 | /* widget_size */ sizeof(AsciiSrcRec), | |||
126 | /* class_initialize */ ClassInitialize, | |||
127 | /* class_part_initialize */ NULL((void*)0), | |||
128 | /* class_inited */ FALSE0, | |||
129 | /* initialize */ Initialize, | |||
130 | /* initialize_hook */ NULL((void*)0), | |||
131 | /* realize */ NULL((void*)0), | |||
132 | /* actions */ NULL((void*)0), | |||
133 | /* num_actions */ 0, | |||
134 | /* resources */ resources, | |||
135 | /* num_resources */ XtNumber(resources)((Cardinal) (sizeof(resources) / sizeof(resources[0]))), | |||
136 | /* xrm_class */ NULLQUARK((XrmQuark) 0), | |||
137 | /* compress_motion */ FALSE0, | |||
138 | /* compress_exposure */ FALSE0, | |||
139 | /* compress_enterleave */ FALSE0, | |||
140 | /* visible_interest */ FALSE0, | |||
141 | /* destroy */ Destroy, | |||
142 | /* resize */ NULL((void*)0), | |||
143 | /* expose */ NULL((void*)0), | |||
144 | /* set_values */ SetValues, | |||
145 | /* set_values_hook */ NULL((void*)0), | |||
146 | /* set_values_almost */ NULL((void*)0), | |||
147 | /* get_values_hook */ GetValuesHook, | |||
148 | /* accept_focus */ NULL((void*)0), | |||
149 | /* version */ XtVersion(11 * 1000 + 6), | |||
150 | /* callback_private */ NULL((void*)0), | |||
151 | /* tm_table */ NULL((void*)0), | |||
152 | /* query_geometry */ NULL((void*)0), | |||
153 | /* display_accelerator */ NULL((void*)0), | |||
154 | /* extension */ NULL((void*)0) | |||
155 | }, | |||
156 | /* textSrc_class fields */ | |||
157 | { | |||
158 | /* Read */ ReadText, | |||
159 | /* Replace */ ReplaceText, | |||
160 | /* Scan */ Scan, | |||
161 | /* Search */ Search, | |||
162 | /* SetSelection */ XtInheritSetSelection((_XawSrcSetSelectionProc) _XtInherit), | |||
163 | /* ConvertSelection */ XtInheritConvertSelection((_XawSrcConvertSelectionProc) _XtInherit) | |||
164 | }, | |||
165 | /* asciiSrc_class fields */ | |||
166 | { | |||
167 | /* Keep the compiler happy */ '\0' | |||
168 | } | |||
169 | }; | |||
170 | ||||
171 | WidgetClass asciiSrcObjectClass = (WidgetClass)&asciiSrcClassRec; | |||
172 | ||||
173 | /************************************************************ | |||
174 | * | |||
175 | * Semi-Public Interfaces. | |||
176 | * | |||
177 | ************************************************************/ | |||
178 | ||||
179 | /* Function Name: ClassInitialize | |||
180 | * Description: Class Initialize routine, called only once. | |||
181 | * Arguments: none. | |||
182 | * Returns: none. | |||
183 | */ | |||
184 | ||||
185 | static void | |||
186 | ClassInitialize(void) | |||
187 | { | |||
188 | XawInitializeWidgetSet(); | |||
189 | XtAddConverter( XtRString((char*)&XtStrings[1797]), XtRAsciiType"AsciiType", CvtStringToAsciiType, | |||
190 | NULL((void*)0), (Cardinal) 0); | |||
191 | } | |||
192 | ||||
193 | /* Function Name: Initialize | |||
194 | * Description: Initializes the simple menu widget | |||
195 | * Arguments: request - the widget requested by the argument list. | |||
196 | * new - the new widget with both resource and non | |||
197 | * resource values. | |||
198 | * Returns: none. | |||
199 | */ | |||
200 | ||||
201 | /* ARGSUSED */ | |||
202 | static void | |||
203 | Initialize(Widget request, Widget new, ArgList args, Cardinal *num_args) | |||
204 | { | |||
205 | AsciiSrcObject src = (AsciiSrcObject) new; | |||
206 | FILE * file; | |||
207 | ||||
208 | /* | |||
209 | * Set correct flags (override resources) depending upon widget class. | |||
210 | */ | |||
211 | ||||
212 | src->text_src.text_format = XawFmt8Bit; /* data format. */ | |||
213 | ||||
214 | #ifdef ASCII_DISK | |||
215 | if (XtIsSubclass(XtParent(new)((new)->core.parent), asciiDiskWidgetClass)) { | |||
216 | src->ascii_src.type = XawAsciiFile; | |||
217 | src->ascii_src.string = src->ascii_src.filename; | |||
218 | } | |||
219 | #endif | |||
220 | ||||
221 | #ifdef ASCII_STRING | |||
222 | if (XtIsSubclass(XtParent(new)((new)->core.parent), asciiStringWidgetClass)) { | |||
223 | src->ascii_src.use_string_in_place = TRUE1; | |||
224 | src->ascii_src.type = XawAsciiString; | |||
225 | } | |||
226 | #endif | |||
227 | ||||
228 | src->ascii_src.changes = FALSE0; | |||
229 | src->ascii_src.allocated_string = FALSE0; | |||
230 | ||||
231 | file = InitStringOrFile(src, src->ascii_src.type == XawAsciiFile); | |||
232 | LoadPieces(src, file, NULL((void*)0)); | |||
233 | ||||
234 | if (file != NULL((void*)0)) fclose(file); | |||
235 | } | |||
236 | ||||
237 | /* Function Name: ReadText | |||
238 | * Description: This function reads the source. | |||
239 | * Arguments: w - the AsciiSource widget. | |||
240 | * pos - position of the text to retreive. | |||
241 | * RETURNED text - text block that will contain returned text. | |||
242 | * length - maximum number of characters to read. | |||
243 | * Returns: The number of characters read into the buffer. | |||
244 | */ | |||
245 | ||||
246 | static XawTextPosition | |||
247 | ReadText(Widget w, XawTextPosition pos, XawTextBlock *text, int length) | |||
248 | { | |||
249 | AsciiSrcObject src = (AsciiSrcObject) w; | |||
250 | XawTextPosition count, start; | |||
251 | Piece * piece = FindPiece(src, pos, &start); | |||
252 | ||||
253 | text->firstPos = pos; | |||
254 | text->ptr = piece->text + (pos - start); | |||
255 | count = piece->used - (pos - start); | |||
256 | text->length = (length > count) ? count : length; | |||
257 | return(pos + text->length); | |||
258 | } | |||
259 | ||||
260 | /* Function Name: ReplaceText. | |||
261 | * Description: Replaces a block of text with new text. | |||
262 | * Arguments: w - the AsciiSource widget. | |||
263 | * startPos, endPos - ends of text that will be removed. | |||
264 | * text - new text to be inserted into buffer at startPos. | |||
265 | * Returns: XawEditError or XawEditDone. | |||
266 | */ | |||
267 | ||||
268 | /*ARGSUSED*/ | |||
269 | static int | |||
270 | ReplaceText (Widget w, XawTextPosition startPos, XawTextPosition endPos, | |||
271 | XawTextBlock *text) | |||
272 | { | |||
273 | AsciiSrcObject src = (AsciiSrcObject) w; | |||
274 | Piece *start_piece, *end_piece, *temp_piece; | |||
275 | XawTextPosition start_first, end_first; | |||
276 | int length, firstPos; | |||
277 | ||||
278 | /* | |||
279 | * Editing a read only source is not allowed. | |||
280 | */ | |||
281 | ||||
282 | if (src->text_src.edit_mode == XawtextRead) | |||
283 | return(XawEditError1); | |||
284 | ||||
285 | start_piece = FindPiece(src, startPos, &start_first); | |||
286 | end_piece = FindPiece(src, endPos, &end_first); | |||
287 | ||||
288 | src->ascii_src.changes = TRUE1; /* We have changed the buffer. */ | |||
289 | ||||
290 | /* | |||
291 | * Remove Old Stuff. | |||
292 | */ | |||
293 | ||||
294 | if (start_piece != end_piece) { | |||
295 | temp_piece = start_piece->next; | |||
296 | ||||
297 | /* | |||
298 | * If empty and not the only piece then remove it. | |||
299 | */ | |||
300 | ||||
301 | if ( ((start_piece->used = startPos - start_first) == 0) && | |||
302 | !((start_piece->next == NULL((void*)0)) && (start_piece->prev == NULL((void*)0))) ) | |||
303 | RemovePiece(src, start_piece); | |||
304 | ||||
305 | while (temp_piece != end_piece) { | |||
306 | temp_piece = temp_piece->next; | |||
307 | RemovePiece(src, temp_piece->prev); | |||
308 | } | |||
309 | end_piece->used -= endPos - end_first; | |||
310 | if (end_piece->used != 0) | |||
311 | MyStrncpy(end_piece->text, (end_piece->text + endPos - end_first), | |||
312 | (int) end_piece->used); | |||
313 | } | |||
314 | else { /* We are fully in one piece. */ | |||
315 | if ( (start_piece->used -= endPos - startPos) == 0) { | |||
316 | if ( !((start_piece->next == NULL((void*)0)) && (start_piece->prev == NULL((void*)0))) ) | |||
317 | RemovePiece(src, start_piece); | |||
318 | } | |||
319 | else { | |||
320 | MyStrncpy(start_piece->text + (startPos - start_first), | |||
321 | start_piece->text + (endPos - start_first), | |||
322 | (int) (start_piece->used - (startPos - start_first)) ); | |||
323 | if ( src->ascii_src.use_string_in_place && | |||
324 | ((src->ascii_src.length - (endPos - startPos)) < | |||
325 | (src->ascii_src.piece_size - 1)) ) | |||
326 | start_piece->text[src->ascii_src.length - (endPos - startPos)] = '\0'; | |||
327 | } | |||
328 | } | |||
329 | ||||
330 | src->ascii_src.length += -(endPos - startPos) + text->length; | |||
331 | ||||
332 | if ( text->length != 0) { | |||
333 | ||||
334 | /* | |||
335 | * Put in the New Stuff. | |||
336 | */ | |||
337 | ||||
338 | start_piece = FindPiece(src, startPos, &start_first); | |||
339 | ||||
340 | length = text->length; | |||
341 | firstPos = text->firstPos; | |||
342 | ||||
343 | while (length > 0) { | |||
344 | char * ptr; | |||
345 | int fill; | |||
346 | ||||
347 | if (src->ascii_src.use_string_in_place) { | |||
348 | if (start_piece->used == (src->ascii_src.piece_size - 1)) { | |||
349 | /* | |||
350 | * If we are in ascii string emulation mode. Then the | |||
351 | * string is not allowed to grow. | |||
352 | */ | |||
353 | start_piece->used = src->ascii_src.length = | |||
354 | src->ascii_src.piece_size - 1; | |||
355 | start_piece->text[src->ascii_src.length] = '\0'; | |||
356 | return(XawEditError1); | |||
357 | } | |||
358 | } | |||
359 | ||||
360 | ||||
361 | if (start_piece->used == src->ascii_src.piece_size) { | |||
362 | BreakPiece(src, start_piece); | |||
363 | start_piece = FindPiece(src, startPos, &start_first); | |||
364 | } | |||
365 | ||||
366 | fill = Min((int)(src->ascii_src.piece_size - start_piece->used), length)((((int)(src->ascii_src.piece_size - start_piece->used) ) < (length)) ? ((int)(src->ascii_src.piece_size - start_piece ->used)) : (length)); | |||
367 | ||||
368 | ptr = start_piece->text + (startPos - start_first); | |||
369 | MyStrncpy(ptr + fill, ptr, | |||
370 | (int) start_piece->used - (startPos - start_first)); | |||
371 | strncpy(ptr, text->ptr + firstPos, fill)__builtin___strncpy_chk (ptr, text->ptr + firstPos, fill, __builtin_object_size (ptr, 2 > 1 ? 1 : 0)); | |||
372 | ||||
373 | startPos += fill; | |||
374 | firstPos += fill; | |||
375 | start_piece->used += fill; | |||
376 | length -= fill; | |||
377 | } | |||
378 | } | |||
379 | ||||
380 | if (src->ascii_src.use_string_in_place) | |||
381 | start_piece->text[start_piece->used] = '\0'; | |||
382 | ||||
383 | XtCallCallbacks(w, XtNcallback((char*)&XtStrings[136]), NULL((void*)0)); /* Call callbacks, we have changed | |||
384 | the buffer. */ | |||
385 | ||||
386 | return(XawEditDone0); | |||
387 | } | |||
388 | ||||
389 | /* Function Name: Scan | |||
390 | * Description: Scans the text source for the number and type | |||
391 | * of item specified. | |||
392 | * Arguments: w - the AsciiSource widget. | |||
393 | * position - the position to start scanning. | |||
394 | * type - type of thing to scan for. | |||
395 | * dir - direction to scan. | |||
396 | * count - which occurance if this thing to search for. | |||
397 | * include - whether or not to include the character found in | |||
398 | * the position that is returned. | |||
399 | * Returns: the position of the item found. | |||
400 | * | |||
401 | * Note: While there are only 'n' characters in the file there are n+1 | |||
402 | * possible cursor positions (one before the first character and | |||
403 | * one after the last character. | |||
404 | */ | |||
405 | ||||
406 | static | |||
407 | XawTextPosition | |||
408 | Scan (Widget w, XawTextPosition position, XawTextScanType type, | |||
409 | XawTextScanDirection dir, int count, Boolean include) | |||
410 | { | |||
411 | AsciiSrcObject src = (AsciiSrcObject) w; | |||
412 | int inc; | |||
413 | Piece* piece; | |||
414 | XawTextPosition first, first_eol_position = 0; | |||
415 | char* ptr; | |||
416 | ||||
417 | if (type == XawstAll) { /* Optomize this common case. */ | |||
418 | if (dir == XawsdRight) | |||
419 | return(src->ascii_src.length); | |||
420 | return(0); /* else. */ | |||
421 | } | |||
422 | ||||
423 | if (position > src->ascii_src.length) | |||
424 | position = src->ascii_src.length; | |||
425 | ||||
426 | if ( dir == XawsdRight ) { | |||
427 | if (position == src->ascii_src.length) | |||
428 | /* | |||
429 | * Scanning right from src->ascii_src.length??? | |||
430 | */ | |||
431 | return(src->ascii_src.length); | |||
432 | inc = 1; | |||
433 | } | |||
434 | else { | |||
435 | if (position == 0) | |||
436 | return(0); /* Scanning left from 0??? */ | |||
437 | inc = -1; | |||
438 | position--; | |||
439 | } | |||
440 | ||||
441 | piece = FindPiece(src, position, &first); | |||
442 | ||||
443 | /* | |||
444 | * If the buffer is empty then return 0. | |||
445 | */ | |||
446 | ||||
447 | if ( piece->used == 0 ) return(0); | |||
448 | ||||
449 | ptr = (position - first) + piece->text; | |||
450 | ||||
451 | switch (type) { | |||
452 | case XawstEOL: | |||
453 | case XawstParagraph: | |||
454 | case XawstWhiteSpace: | |||
455 | for ( ; count > 0 ; count-- ) { | |||
456 | Boolean non_space = FALSE0, first_eol = TRUE1; | |||
457 | /* CONSTCOND */ | |||
458 | while (TRUE1) { | |||
459 | unsigned char c = *ptr; | |||
460 | ||||
461 | ptr += inc; | |||
462 | position += inc; | |||
463 | ||||
464 | if (type == XawstWhiteSpace) { | |||
465 | if (isspace(c)) { | |||
466 | if (non_space) | |||
467 | break; | |||
468 | } | |||
469 | else | |||
470 | non_space = TRUE1; | |||
471 | } | |||
472 | else if (type == XawstEOL) { | |||
473 | if (c == '\n') break; | |||
474 | } | |||
475 | else { /* XawstParagraph */ | |||
476 | if (first_eol) { | |||
477 | if (c == '\n') { | |||
478 | first_eol_position = position; | |||
479 | first_eol = FALSE0; | |||
480 | } | |||
481 | } | |||
482 | else | |||
483 | if ( c == '\n') | |||
484 | break; | |||
485 | else if ( !isspace(c) ) | |||
486 | first_eol = TRUE1; | |||
487 | } | |||
488 | ||||
489 | ||||
490 | if ( ptr < piece->text ) { | |||
491 | piece = piece->prev; | |||
492 | if (piece == NULL((void*)0)) /* Begining of text. */ | |||
493 | return(0); | |||
494 | ptr = piece->text + piece->used - 1; | |||
495 | } | |||
496 | else if ( ptr >= (piece->text + piece->used) ) { | |||
497 | piece = piece->next; | |||
498 | if (piece == NULL((void*)0)) /* End of text. */ | |||
499 | return(src->ascii_src.length); | |||
500 | ptr = piece->text; | |||
501 | } | |||
502 | } | |||
503 | } | |||
504 | if (!include) { | |||
505 | if ( type == XawstParagraph) | |||
506 | position = first_eol_position; | |||
507 | position -= inc; | |||
508 | } | |||
509 | break; | |||
510 | case XawstPositions: | |||
511 | position += count * inc; | |||
512 | break; | |||
513 | case XawstAll: /* handled in special code above */ | |||
514 | default: | |||
515 | break; | |||
516 | } | |||
517 | ||||
518 | if ( dir == XawsdLeft ) | |||
519 | position++; | |||
520 | ||||
521 | if (position >= src->ascii_src.length) | |||
522 | return(src->ascii_src.length); | |||
523 | if (position < 0) | |||
524 | return(0); | |||
525 | ||||
526 | return(position); | |||
527 | } | |||
528 | ||||
529 | /* Function Name: Search | |||
530 | * Description: Searchs the text source for the text block passed | |||
531 | * Arguments: w - the AsciiSource Widget. | |||
532 | * position - the position to start scanning. | |||
533 | * dir - direction to scan. | |||
534 | * text - the text block to search for. | |||
535 | * Returns: the position of the item found. | |||
536 | */ | |||
537 | ||||
538 | static XawTextPosition | |||
539 | Search(Widget w, XawTextPosition position, XawTextScanDirection dir, | |||
540 | XawTextBlock *text) | |||
541 | { | |||
542 | AsciiSrcObject src = (AsciiSrcObject) w; | |||
543 | int inc, count = 0; | |||
544 | char * ptr; | |||
545 | Piece * piece; | |||
546 | char * buf; | |||
547 | XawTextPosition first; | |||
548 | ||||
549 | if ( dir == XawsdRight ) | |||
550 | inc = 1; | |||
551 | else { | |||
552 | inc = -1; | |||
553 | if (position == 0) | |||
554 | return(XawTextSearchError(-12345L)); /* scanning left from 0??? */ | |||
555 | position--; | |||
556 | } | |||
557 | ||||
558 | buf = XtMalloc((unsigned)sizeof(unsigned char) * text->length); | |||
559 | strncpy(buf, (text->ptr + text->firstPos), text->length)__builtin___strncpy_chk (buf, (text->ptr + text->firstPos ), text->length, __builtin_object_size (buf, 2 > 1 ? 1 : 0)); | |||
560 | piece = FindPiece(src, position, &first); | |||
561 | ptr = (position - first) + piece->text; | |||
562 | ||||
563 | /* CONSTCOND */ | |||
564 | while (TRUE1) { | |||
565 | if (*ptr == ((dir == XawsdRight) ? *(buf + count) | |||
566 | : *(buf + text->length - count - 1)) ) { | |||
567 | if (count == (text->length - 1)) | |||
568 | break; | |||
569 | else | |||
570 | count++; | |||
571 | } | |||
572 | else { | |||
573 | if (count != 0) { | |||
574 | position -=inc * count; | |||
575 | ptr -= inc * count; | |||
576 | } | |||
577 | count = 0; | |||
578 | } | |||
579 | ||||
580 | ptr += inc; | |||
581 | position += inc; | |||
582 | ||||
583 | while ( ptr < piece->text ) { | |||
584 | piece = piece->prev; | |||
585 | if (piece == NULL((void*)0)) { /* Begining of text. */ | |||
586 | XtFree(buf); | |||
587 | return(XawTextSearchError(-12345L)); | |||
588 | } | |||
589 | ptr = piece->text + piece->used - 1; | |||
590 | } | |||
591 | ||||
592 | while ( ptr >= (piece->text + piece->used) ) { | |||
593 | piece = piece->next; | |||
594 | if (piece == NULL((void*)0)) { /* End of text. */ | |||
595 | XtFree(buf); | |||
596 | return(XawTextSearchError(-12345L)); | |||
597 | } | |||
598 | ptr = piece->text; | |||
599 | } | |||
600 | } | |||
601 | ||||
602 | XtFree(buf); | |||
603 | if (dir == XawsdLeft) | |||
604 | return(position); | |||
605 | return(position - (text->length - 1)); | |||
606 | } | |||
607 | ||||
608 | /* Function Name: SetValues | |||
609 | * Description: Sets the values for the AsciiSource. | |||
610 | * Arguments: current - current state of the widget. | |||
611 | * request - what was requested. | |||
612 | * new - what the widget will become. | |||
613 | * Returns: True if redisplay is needed. | |||
614 | */ | |||
615 | ||||
616 | /* ARGSUSED */ | |||
617 | static Boolean | |||
618 | SetValues(Widget current, Widget request, Widget new, ArgList args, | |||
619 | Cardinal * num_args) | |||
620 | { | |||
621 | AsciiSrcObject src = (AsciiSrcObject) new; | |||
622 | AsciiSrcObject old_src = (AsciiSrcObject) current; | |||
623 | Boolean total_reset = FALSE0, string_set = FALSE0; | |||
624 | FILE * file; | |||
625 | int i; | |||
626 | ||||
627 | if ( old_src->ascii_src.use_string_in_place != | |||
| ||||
628 | src->ascii_src.use_string_in_place ) { | |||
629 | XtAppWarning( XtWidgetToApplicationContext(new), | |||
630 | "AsciiSrc: The XtNuseStringInPlace resource may not be changed."); | |||
631 | src->ascii_src.use_string_in_place = | |||
632 | old_src->ascii_src.use_string_in_place; | |||
633 | } | |||
634 | ||||
635 | for (i = 0; i < *num_args ; i++ ) | |||
636 | if (streq(args[i].name, XtNstring)( strcmp((args[i].name), (((char*)&XtStrings[733]))) == 0 )) { | |||
637 | string_set = TRUE1; | |||
638 | break; | |||
639 | } | |||
640 | ||||
641 | if ( string_set || (old_src->ascii_src.type != src->ascii_src.type) ) { | |||
642 | RemoveOldStringOrFile(old_src, string_set); /* remove old info. */ | |||
643 | file = InitStringOrFile(src, string_set); /* Init new info. */ | |||
644 | LoadPieces(src, file, NULL((void*)0)); /* load new info into internal buffers. */ | |||
645 | if (file != NULL((void*)0)) fclose(file); | |||
646 | XawTextSetSource( XtParent(new)((new)->core.parent), new, 0); /* Tell text widget | |||
647 | what happened. */ | |||
648 | total_reset = TRUE1; | |||
649 | } | |||
650 | ||||
651 | if ( old_src->ascii_src.ascii_length != src->ascii_src.ascii_length ) | |||
652 | src->ascii_src.piece_size = src->ascii_src.ascii_length; | |||
653 | ||||
654 | if ( !total_reset && | |||
655 | (old_src->ascii_src.piece_size != src->ascii_src.piece_size) ) { | |||
656 | String string = StorePiecesInString(old_src); | |||
657 | FreeAllPieces(old_src); | |||
658 | LoadPieces(src, NULL((void*)0), string); | |||
659 | XtFree(string); | |||
660 | } | |||
661 | ||||
662 | return(FALSE0); | |||
663 | } | |||
664 | ||||
665 | /* Function Name: GetValuesHook | |||
666 | * Description: This is a get values hook routine that sets the | |||
667 | * values specific to the ascii source. | |||
668 | * Arguments: w - the AsciiSource Widget. | |||
669 | * args - the argument list. | |||
670 | * num_args - the number of args. | |||
671 | * Returns: none. | |||
672 | */ | |||
673 | ||||
674 | static void | |||
675 | GetValuesHook(Widget w, ArgList args, Cardinal * num_args) | |||
676 | { | |||
677 | AsciiSrcObject src = (AsciiSrcObject) w; | |||
678 | int i; | |||
679 | ||||
680 | if (src->ascii_src.type == XawAsciiString) { | |||
681 | for (i = 0; i < *num_args ; i++ ) | |||
682 | if (streq(args[i].name, XtNstring)( strcmp((args[i].name), (((char*)&XtStrings[733]))) == 0 )) { | |||
683 | if (src->ascii_src.use_string_in_place) { | |||
684 | *((char **) args[i].value) = src->ascii_src.first_piece->text; | |||
685 | } | |||
686 | else { | |||
687 | if (XawAsciiSave(w)) /* If save sucessful. */ | |||
688 | *((char **) args[i].value) = src->ascii_src.string; | |||
689 | } | |||
690 | break; | |||
691 | } | |||
692 | } | |||
693 | } | |||
694 | ||||
695 | /* Function Name: Destroy | |||
696 | * Description: Destroys an ascii source (frees all data) | |||
697 | * Arguments: src - the Ascii source Widget to free. | |||
698 | * Returns: none. | |||
699 | */ | |||
700 | ||||
701 | static void | |||
702 | Destroy (Widget w) | |||
703 | { | |||
704 | RemoveOldStringOrFile((AsciiSrcObject) w, True1); | |||
705 | } | |||
706 | ||||
707 | /************************************************************ | |||
708 | * | |||
709 | * Public routines | |||
710 | * | |||
711 | ************************************************************/ | |||
712 | ||||
713 | /* Function Name: XawAsciiSourceFreeString | |||
714 | * Description: Frees the string returned by a get values call | |||
715 | * on the string when the source is of type string. | |||
716 | * Arguments: w - the AsciiSrc widget. | |||
717 | * Returns: none. | |||
718 | */ | |||
719 | ||||
720 | void | |||
721 | XawAsciiSourceFreeString(Widget w) | |||
722 | { | |||
723 | AsciiSrcObject src = (AsciiSrcObject) w; | |||
724 | ||||
725 | /* If the src is really a multi, call the multi routine.*/ | |||
726 | ||||
727 | #ifdef XAW_INTERNATIONALIZATION1 | |||
728 | if ( XtIsSubclass( w, multiSrcObjectClass ) ) { | |||
729 | _XawMultiSourceFreeString( w ); | |||
730 | return; | |||
731 | } | |||
732 | else | |||
733 | #endif | |||
734 | if ( !XtIsSubclass( w, asciiSrcObjectClass ) ) { | |||
735 | XtErrorMsg("bad argument", "asciiSource", "XawError", | |||
736 | #ifdef XAW_INTERNATIONALIZATION1 | |||
737 | "XawAsciiSourceFreeString's parameter must be an asciiSrc or multiSrc.", | |||
738 | #else | |||
739 | "XawAsciiSourceFreeString's parameter must be an asciiSrc.", | |||
740 | #endif | |||
741 | NULL((void*)0), NULL((void*)0)); | |||
742 | } | |||
743 | ||||
744 | if (src->ascii_src.allocated_string && src->ascii_src.type != XawAsciiFile) { | |||
745 | src->ascii_src.allocated_string = FALSE0; | |||
746 | XtFree(src->ascii_src.string); | |||
747 | src->ascii_src.string = NULL((void*)0); | |||
748 | } | |||
749 | } | |||
750 | ||||
751 | /* Function Name: XawAsciiSave | |||
752 | * Description: Saves all the pieces into a file or string as required. | |||
753 | * Arguments: w - the asciiSrc Widget. | |||
754 | * Returns: TRUE if the save was successful. | |||
755 | */ | |||
756 | ||||
757 | Boolean | |||
758 | XawAsciiSave(Widget w) | |||
759 | { | |||
760 | AsciiSrcObject src = (AsciiSrcObject) w; | |||
761 | ||||
762 | /* If the src is really a multi, call the multi save. */ | |||
763 | ||||
764 | #ifdef XAW_INTERNATIONALIZATION1 | |||
765 | if ( XtIsSubclass( w, multiSrcObjectClass ) ) | |||
766 | return( _XawMultiSave( w ) ); | |||
767 | else | |||
768 | #endif | |||
769 | if ( !XtIsSubclass( w, asciiSrcObjectClass ) ) { | |||
770 | XtErrorMsg("bad argument", "asciiSource", "XawError", | |||
771 | #ifdef XAW_INTERNATIONALIZATION1 | |||
772 | "XawAsciiSave's parameter must be an asciiSrc or multiSrc.", | |||
773 | #else | |||
774 | "XawAsciiSave's parameter must be an asciiSrc.", | |||
775 | #endif | |||
776 | NULL((void*)0), NULL((void*)0)); | |||
777 | } | |||
778 | ||||
779 | /* | |||
780 | * If using the string in place then there is no need to play games | |||
781 | * to get the internal info into a readable string. | |||
782 | */ | |||
783 | ||||
784 | if (src->ascii_src.use_string_in_place) | |||
785 | return(TRUE1); | |||
786 | ||||
787 | if (src->ascii_src.type == XawAsciiFile) { | |||
788 | char * string; | |||
789 | ||||
790 | if (!src->ascii_src.changes) /* No changes to save. */ | |||
791 | return(TRUE1); | |||
792 | ||||
793 | string = StorePiecesInString(src); | |||
794 | ||||
795 | if (WriteToFile(string, src->ascii_src.string) == FALSE0) { | |||
796 | XtFree(string); | |||
797 | return(FALSE0); | |||
798 | } | |||
799 | XtFree(string); | |||
800 | } | |||
801 | else { | |||
802 | if (src->ascii_src.allocated_string == TRUE1) | |||
803 | XtFree(src->ascii_src.string); | |||
804 | else | |||
805 | src->ascii_src.allocated_string = TRUE1; | |||
806 | ||||
807 | src->ascii_src.string = StorePiecesInString(src); | |||
808 | } | |||
809 | src->ascii_src.changes = FALSE0; | |||
810 | return(TRUE1); | |||
811 | } | |||
812 | ||||
813 | /* Function Name: XawAsciiSaveAsFile | |||
814 | * Description: Save the current buffer as a file. | |||
815 | * Arguments: w - the AsciiSrc widget. | |||
816 | * name - name of the file to save this file into. | |||
817 | * Returns: True if the save was sucessful. | |||
818 | */ | |||
819 | ||||
820 | Boolean | |||
821 | XawAsciiSaveAsFile(Widget w, _Xconstconst char* name) | |||
822 | { | |||
823 | AsciiSrcObject src = (AsciiSrcObject) w; | |||
824 | String string; | |||
825 | Boolean ret; | |||
826 | ||||
827 | /* If the src is really a multi, call the multi save. - */ | |||
828 | ||||
829 | #ifdef XAW_INTERNATIONALIZATION1 | |||
830 | if ( XtIsSubclass( w, multiSrcObjectClass ) ) | |||
831 | return( _XawMultiSaveAsFile( w, name ) ); | |||
832 | else | |||
833 | #endif | |||
834 | if ( !XtIsSubclass( w, asciiSrcObjectClass ) ) { | |||
835 | XtErrorMsg("bad argument", "asciiSource", "XawError", | |||
836 | #ifdef XAW_INTERNATIONALIZATION1 | |||
837 | "XawAsciiSaveAsFile's 1st parameter must be an asciiSrc or multiSrc.", | |||
838 | #else | |||
839 | "XawAsciiSaveAsFile's 1st parameter must be an asciiSrc.", | |||
840 | #endif | |||
841 | NULL((void*)0), NULL((void*)0)); | |||
842 | } | |||
843 | ||||
844 | string = StorePiecesInString(src); | |||
845 | ||||
846 | ret = WriteToFile(string, name); | |||
847 | XtFree(string); | |||
848 | return(ret); | |||
849 | } | |||
850 | ||||
851 | /* Function Name: XawAsciiSourceChanged | |||
852 | * Description: Returns true if the source has changed since last saved. | |||
853 | * Arguments: w - the ascii source widget. | |||
854 | * Returns: a Boolean (see description). | |||
855 | */ | |||
856 | ||||
857 | Boolean | |||
858 | XawAsciiSourceChanged(Widget w) | |||
859 | { | |||
860 | #ifdef XAW_INTERNATIONALIZATION1 | |||
861 | if ( XtIsSubclass( w, multiSrcObjectClass ) ) | |||
862 | return( ( (MultiSrcObject) w )->multi_src.changes ); | |||
863 | #endif | |||
864 | ||||
865 | if ( XtIsSubclass( w, asciiSrcObjectClass ) ) | |||
866 | return( ( (AsciiSrcObject) w)->ascii_src.changes ); | |||
867 | ||||
868 | XtErrorMsg("bad argument", "asciiSource", "XawError", | |||
869 | #ifdef XAW_INTERNATIONALIZATION1 | |||
870 | "XawAsciiSourceChanged parameter must be an asciiSrc or multiSrc.", | |||
871 | #else | |||
872 | "XawAsciiSourceChanged parameter must be an asciiSrc.", | |||
873 | #endif | |||
874 | NULL((void*)0), NULL((void*)0)); | |||
875 | ||||
876 | return( True1 ); /* for gcc -Wall */ | |||
877 | } | |||
878 | ||||
879 | /************************************************************ | |||
880 | * | |||
881 | * Private Functions. | |||
882 | * | |||
883 | ************************************************************/ | |||
884 | ||||
885 | static void | |||
886 | RemoveOldStringOrFile(AsciiSrcObject src, Boolean checkString) | |||
887 | { | |||
888 | FreeAllPieces(src); | |||
889 | ||||
890 | if (checkString && src->ascii_src.allocated_string) { | |||
891 | XtFree(src->ascii_src.string); | |||
892 | src->ascii_src.allocated_string = False0; | |||
893 | src->ascii_src.string = NULL((void*)0); | |||
894 | } | |||
895 | } | |||
896 | ||||
897 | /* Function Name: WriteToFile | |||
898 | * Description: Write the string specified to the begining of the file | |||
899 | * specified. | |||
900 | * Arguments: string - string to write. | |||
901 | * name - the name of the file | |||
902 | * Returns: returns TRUE if sucessful, FALSE otherwise. | |||
903 | */ | |||
904 | ||||
905 | static Boolean | |||
906 | WriteToFile(_Xconstconst _XtStringchar* string, _Xconstconst _XtStringchar* name) | |||
907 | { | |||
908 | int fd; | |||
909 | ||||
910 | if ( ((fd = creat(name, 0666)) == -1 ) || | |||
911 | (write(fd, string, sizeof(unsigned char) * strlen(string)) == -1) ) | |||
912 | return(FALSE0); | |||
913 | ||||
914 | if ( close(fd) == -1 ) | |||
915 | return(FALSE0); | |||
916 | ||||
917 | return(TRUE1); | |||
918 | } | |||
919 | ||||
920 | /* Function Name: StorePiecesInString | |||
921 | * Description: store the pieces in memory into a standard ascii string. | |||
922 | * Arguments: data - the ascii pointer data. | |||
923 | * Returns: none. | |||
924 | */ | |||
925 | ||||
926 | static String | |||
927 | StorePiecesInString(AsciiSrcObject src) | |||
928 | { | |||
929 | String string; | |||
930 | XawTextPosition first; | |||
931 | Piece * piece; | |||
932 | ||||
933 | string = XtMalloc((unsigned) sizeof(unsigned char) * | |||
934 | src->ascii_src.length + 1); | |||
935 | ||||
936 | for (first = 0, piece = src->ascii_src.first_piece ; piece != NULL((void*)0); | |||
937 | first += piece->used, piece = piece->next) | |||
938 | strncpy(string + first, piece->text, piece->used)__builtin___strncpy_chk (string + first, piece->text, piece ->used, __builtin_object_size (string + first, 2 > 1 ? 1 : 0)); | |||
939 | ||||
940 | string[src->ascii_src.length] = '\0'; /* NULL terminate this sucker. */ | |||
941 | ||||
942 | /* | |||
943 | * This will refill all pieces to capacity. | |||
944 | */ | |||
945 | ||||
946 | if (src->ascii_src.data_compression) { | |||
947 | FreeAllPieces(src); | |||
948 | LoadPieces(src, NULL((void*)0), string); | |||
949 | } | |||
950 | ||||
951 | return(string); | |||
952 | } | |||
953 | ||||
954 | /* Function Name: InitStringOrFile. | |||
955 | * Description: Initializes the string or file. | |||
956 | * Arguments: src - the AsciiSource. | |||
957 | * Returns: none - May exit though. | |||
958 | */ | |||
959 | ||||
960 | static FILE * | |||
961 | InitStringOrFile(AsciiSrcObject src, Boolean newString) | |||
962 | { | |||
963 | char * open_mode = NULL((void*)0); | |||
964 | FILE * file; | |||
965 | char fileName[TMPSIZ1024]; | |||
966 | ||||
967 | if (src->ascii_src.type == XawAsciiString) { | |||
968 | ||||
969 | if (src->ascii_src.string == NULL((void*)0)) | |||
970 | src->ascii_src.length = 0; | |||
971 | ||||
972 | else if (! src->ascii_src.use_string_in_place) { | |||
973 | src->ascii_src.string = XtNewString(src->ascii_src.string)((src->ascii_src.string) != ((void*)0) ? (__builtin___strcpy_chk (XtMalloc((unsigned)strlen(src->ascii_src.string) + 1), src ->ascii_src.string, __builtin_object_size (XtMalloc((unsigned )strlen(src->ascii_src.string) + 1), 2 > 1 ? 1 : 0))) : ((void*)0)); | |||
974 | src->ascii_src.allocated_string = True1; | |||
975 | src->ascii_src.length = strlen(src->ascii_src.string); | |||
976 | } | |||
977 | ||||
978 | if (src->ascii_src.use_string_in_place) { | |||
979 | src->ascii_src.length = strlen(src->ascii_src.string); | |||
980 | /* In case the length resource is incorrectly set */ | |||
981 | if (src->ascii_src.length > src->ascii_src.ascii_length) | |||
982 | src->ascii_src.ascii_length = src->ascii_src.length; | |||
983 | ||||
984 | if (src->ascii_src.ascii_length == MAGIC_VALUE((XawTextPosition) -1)) | |||
985 | src->ascii_src.piece_size = src->ascii_src.length; | |||
986 | else | |||
987 | src->ascii_src.piece_size = src->ascii_src.ascii_length + 1; | |||
988 | } | |||
989 | ||||
990 | return(NULL((void*)0)); | |||
991 | } | |||
992 | ||||
993 | /* | |||
994 | * type is XawAsciiFile. | |||
995 | */ | |||
996 | ||||
997 | src->ascii_src.is_tempfile = FALSE0; | |||
998 | ||||
999 | switch (src->text_src.edit_mode) { | |||
1000 | case XawtextRead: | |||
1001 | if (src->ascii_src.string == NULL((void*)0)) | |||
1002 | XtErrorMsg("NoFile", "asciiSourceCreate", "XawError", | |||
1003 | "Creating a read only disk widget and no file specified.", | |||
1004 | NULL((void*)0), 0); | |||
1005 | open_mode = "r"; | |||
1006 | break; | |||
1007 | case XawtextAppend: | |||
1008 | case XawtextEdit: | |||
1009 | if (src->ascii_src.string == NULL((void*)0)) { | |||
1010 | src->ascii_src.string = fileName; | |||
1011 | (void) tmpnam(src->ascii_src.string); | |||
1012 | src->ascii_src.is_tempfile = TRUE1; | |||
1013 | open_mode = "w"; | |||
1014 | } else | |||
1015 | open_mode = "r+"; | |||
1016 | break; | |||
1017 | default: | |||
1018 | XtErrorMsg("badMode", "asciiSourceCreate", "XawError", | |||
1019 | "Bad editMode for ascii source; must be Read, Append or Edit.", | |||
1020 | NULL((void*)0), NULL((void*)0)); | |||
1021 | } | |||
1022 | ||||
1023 | /* Allocate new memory for the temp filename, because it is held in | |||
1024 | * a stack variable, not static memory. This widget does not need | |||
1025 | * to keep the private state field is_tempfile -- it is only accessed | |||
1026 | * in this routine, and its former setting is unused. | |||
1027 | */ | |||
1028 | if (newString || src->ascii_src.is_tempfile) { | |||
1029 | src->ascii_src.string = XtNewString(src->ascii_src.string)((src->ascii_src.string) != ((void*)0) ? (__builtin___strcpy_chk (XtMalloc((unsigned)strlen(src->ascii_src.string) + 1), src ->ascii_src.string, __builtin_object_size (XtMalloc((unsigned )strlen(src->ascii_src.string) + 1), 2 > 1 ? 1 : 0))) : ((void*)0)); | |||
1030 | src->ascii_src.allocated_string = TRUE1; | |||
1031 | } | |||
1032 | ||||
1033 | if (!src->ascii_src.is_tempfile) { | |||
1034 | if ((file = fopen(src->ascii_src.string, open_mode)) != 0) { | |||
1035 | (void) fseek(file, 0, SEEK_END2); | |||
1036 | src->ascii_src.length = (XawTextPosition) ftell(file); | |||
1037 | return file; | |||
1038 | } else { | |||
1039 | String params[2]; | |||
1040 | Cardinal num_params = 2; | |||
1041 | ||||
1042 | params[0] = src->ascii_src.string; | |||
1043 | params[1] = strerror(errno(*__error())); | |||
1044 | XtAppWarningMsg(XtWidgetToApplicationContext((Widget)src), | |||
1045 | "openError", "asciiSourceCreate", "XawWarning", | |||
1046 | "Cannot open file %s; %s", params, &num_params); | |||
1047 | } | |||
1048 | } | |||
1049 | src->ascii_src.length = 0; | |||
1050 | return((FILE *)NULL((void*)0)); | |||
1051 | } | |||
1052 | ||||
1053 | static void | |||
1054 | LoadPieces(AsciiSrcObject src, FILE * file, char * string) | |||
1055 | { | |||
1056 | char *local_str, *ptr; | |||
1057 | Piece * piece = NULL((void*)0); | |||
1058 | XawTextPosition left; | |||
1059 | ||||
1060 | if (string == NULL((void*)0)) { | |||
1061 | if (src->ascii_src.type == XawAsciiFile) { | |||
1062 | local_str = XtMalloc((unsigned) (src->ascii_src.length + 1) | |||
1063 | * sizeof(unsigned char)); | |||
1064 | if (src->ascii_src.length != 0) { | |||
1065 | fseek(file, 0, SEEK_SET0); | |||
1066 | src->ascii_src.length = fread(local_str, sizeof(unsigned char), | |||
1067 | (size_t)src->ascii_src.length, file); | |||
1068 | if (src->ascii_src.length <= 0) | |||
1069 | XtErrorMsg("readError", "asciiSourceCreate", "XawError", | |||
1070 | "fread returned error.", NULL((void*)0), NULL((void*)0)); | |||
1071 | } | |||
1072 | local_str[src->ascii_src.length] = '\0'; | |||
1073 | } | |||
1074 | else | |||
1075 | local_str = src->ascii_src.string; | |||
1076 | } | |||
1077 | else | |||
1078 | local_str = string; | |||
1079 | ||||
1080 | if (src->ascii_src.use_string_in_place) { | |||
1081 | piece = AllocNewPiece(src, piece); | |||
1082 | piece->used = Min(src->ascii_src.length, src->ascii_src.piece_size)(((src->ascii_src.length) < (src->ascii_src.piece_size )) ? (src->ascii_src.length) : (src->ascii_src.piece_size )); | |||
1083 | piece->text = src->ascii_src.string; | |||
1084 | return; | |||
1085 | } | |||
1086 | ||||
1087 | ptr = local_str; | |||
1088 | left = src->ascii_src.length; | |||
1089 | ||||
1090 | do { | |||
1091 | piece = AllocNewPiece(src, piece); | |||
1092 | ||||
1093 | piece->text = XtMalloc((unsigned)src->ascii_src.piece_size | |||
1094 | * sizeof(unsigned char)); | |||
1095 | piece->used = Min(left, src->ascii_src.piece_size)(((left) < (src->ascii_src.piece_size)) ? (left) : (src ->ascii_src.piece_size)); | |||
1096 | if (piece->used != 0) | |||
1097 | strncpy(piece->text, ptr, piece->used)__builtin___strncpy_chk (piece->text, ptr, piece->used, __builtin_object_size (piece->text, 2 > 1 ? 1 : 0)); | |||
1098 | ||||
1099 | left -= piece->used; | |||
1100 | ptr += piece->used; | |||
1101 | } while (left > 0); | |||
1102 | ||||
1103 | if ( (src->ascii_src.type == XawAsciiFile) && (string == NULL((void*)0)) ) | |||
1104 | XtFree(local_str); | |||
1105 | } | |||
1106 | ||||
1107 | /* Function Name: AllocNewPiece | |||
1108 | * Description: Allocates a new piece of memory. | |||
1109 | * Arguments: src - The AsciiSrc Widget. | |||
1110 | * prev - the piece just before this one, or NULL. | |||
1111 | * Returns: the allocated piece. | |||
1112 | */ | |||
1113 | ||||
1114 | static Piece * | |||
1115 | AllocNewPiece(AsciiSrcObject src, Piece * prev) | |||
1116 | { | |||
1117 | Piece * piece = XtNew(Piece)((Piece *) XtMalloc((unsigned) sizeof(Piece))); | |||
1118 | ||||
1119 | if (prev == NULL((void*)0)) { | |||
1120 | src->ascii_src.first_piece = piece; | |||
1121 | piece->next = NULL((void*)0); | |||
1122 | } | |||
1123 | else { | |||
1124 | if (prev->next != NULL((void*)0)) | |||
1125 | (prev->next)->prev = piece; | |||
1126 | piece->next = prev->next; | |||
1127 | prev->next = piece; | |||
1128 | } | |||
1129 | ||||
1130 | piece->prev = prev; | |||
1131 | ||||
1132 | return(piece); | |||
1133 | } | |||
1134 | ||||
1135 | /* Function Name: FreeAllPieces | |||
1136 | * Description: Frees all the pieces | |||
1137 | * Arguments: src - The AsciiSrc Widget. | |||
1138 | * Returns: none. | |||
1139 | */ | |||
1140 | ||||
1141 | static void | |||
1142 | FreeAllPieces(AsciiSrcObject src) | |||
1143 | { | |||
1144 | Piece * next, * first = src->ascii_src.first_piece; | |||
1145 | ||||
1146 | if (first->prev != NULL((void*)0)) | |||
| ||||
1147 | (void) printf("Xaw AsciiSrc Object: possible memory leak in FreeAllPieces().\n"); | |||
1148 | ||||
1149 | for ( ; first != NULL((void*)0) ; first = next ) { | |||
1150 | next = first->next; | |||
1151 | RemovePiece(src, first); | |||
1152 | } | |||
1153 | } | |||
1154 | ||||
1155 | /* Function Name: RemovePiece | |||
1156 | * Description: Removes a piece from the list. | |||
1157 | * Arguments: | |||
1158 | * piece - the piece to remove. | |||
1159 | * Returns: none. | |||
1160 | */ | |||
1161 | ||||
1162 | static void | |||
1163 | RemovePiece(AsciiSrcObject src, Piece * piece) | |||
1164 | { | |||
1165 | if (piece->prev == NULL((void*)0)) | |||
1166 | src->ascii_src.first_piece = piece->next; | |||
1167 | else | |||
1168 | (piece->prev)->next = piece->next; | |||
1169 | ||||
1170 | if (piece->next != NULL((void*)0)) | |||
1171 | (piece->next)->prev = piece->prev; | |||
1172 | ||||
1173 | if (!src->ascii_src.use_string_in_place) | |||
1174 | XtFree(piece->text); | |||
1175 | ||||
1176 | XtFree((char *)piece); | |||
1177 | } | |||
1178 | ||||
1179 | /* Function Name: FindPiece | |||
1180 | * Description: Finds the piece containing the position indicated. | |||
1181 | * Arguments: src - The AsciiSrc Widget. | |||
1182 | * position - the position that we are searching for. | |||
1183 | * RETURNED first - the position of the first character in this piece. | |||
1184 | * Returns: piece - the piece that contains this position. | |||
1185 | */ | |||
1186 | ||||
1187 | static Piece * | |||
1188 | FindPiece(AsciiSrcObject src, XawTextPosition position, XawTextPosition * first) | |||
1189 | { | |||
1190 | Piece * old_piece = NULL((void*)0), * piece = src->ascii_src.first_piece; | |||
1191 | XawTextPosition temp; | |||
1192 | ||||
1193 | for ( temp = 0 ; piece != NULL((void*)0) ; temp += piece->used, piece = piece->next ) { | |||
1194 | *first = temp; | |||
1195 | old_piece = piece; | |||
1196 | ||||
1197 | if ((temp + piece->used) > position) | |||
1198 | return(piece); | |||
1199 | } | |||
1200 | return(old_piece); /* if we run off the end the return the last piece */ | |||
1201 | } | |||
1202 | ||||
1203 | /* Function Name: MyStrncpy | |||
1204 | * Description: Just like string copy, but slower and will always | |||
1205 | * work on overlapping strings. | |||
1206 | * Arguments: (same as strncpy) - s1, s2 - strings to copy (2->1). | |||
1207 | * n - the number of chars to copy. | |||
1208 | * Returns: s1. | |||
1209 | */ | |||
1210 | ||||
1211 | static String | |||
1212 | MyStrncpy(char * s1, char * s2, int n) | |||
1213 | { | |||
1214 | char buf[256]; | |||
1215 | char* temp; | |||
1216 | ||||
1217 | if (n == 0) return s1; | |||
1218 | ||||
1219 | if (n < sizeof buf) temp = buf; | |||
1220 | else temp = XtMalloc((unsigned)sizeof(unsigned char) * n); | |||
1221 | ||||
1222 | strncpy(temp, s2, n)__builtin___strncpy_chk (temp, s2, n, __builtin_object_size ( temp, 2 > 1 ? 1 : 0)); /* Saber has a bug that causes it to generate*/ | |||
1223 | strncpy(s1, temp, n)__builtin___strncpy_chk (s1, temp, n, __builtin_object_size ( s1, 2 > 1 ? 1 : 0)); /* a bogus warning message here (CDP 6/32/89)*/ | |||
1224 | ||||
1225 | if (temp != buf) XtFree(temp); | |||
1226 | return s1; | |||
1227 | } | |||
1228 | ||||
1229 | /* Function Name: BreakPiece | |||
1230 | * Description: Breaks a full piece into two new pieces. | |||
1231 | * Arguments: src - The AsciiSrc Widget. | |||
1232 | * piece - the piece to break. | |||
1233 | * Returns: none. | |||
1234 | */ | |||
1235 | ||||
1236 | #define HALF_PIECE(src->ascii_src.piece_size/2) (src->ascii_src.piece_size/2) | |||
1237 | ||||
1238 | static void | |||
1239 | BreakPiece(AsciiSrcObject src, Piece * piece) | |||
1240 | { | |||
1241 | Piece * new = AllocNewPiece(src, piece); | |||
1242 | ||||
1243 | new->text = XtMalloc(src->ascii_src.piece_size * sizeof(unsigned char)); | |||
1244 | strncpy(new->text, piece->text + HALF_PIECE,__builtin___strncpy_chk (new->text, piece->text + (src-> ascii_src.piece_size/2), src->ascii_src.piece_size - (src-> ascii_src.piece_size/2), __builtin_object_size (new->text, 2 > 1 ? 1 : 0)) | |||
1245 | src->ascii_src.piece_size - HALF_PIECE)__builtin___strncpy_chk (new->text, piece->text + (src-> ascii_src.piece_size/2), src->ascii_src.piece_size - (src-> ascii_src.piece_size/2), __builtin_object_size (new->text, 2 > 1 ? 1 : 0)); | |||
1246 | piece->used = HALF_PIECE(src->ascii_src.piece_size/2); | |||
1247 | new->used = src->ascii_src.piece_size - HALF_PIECE(src->ascii_src.piece_size/2); | |||
1248 | } | |||
1249 | ||||
1250 | /* ARGSUSED */ | |||
1251 | static void | |||
1252 | CvtStringToAsciiType(XrmValuePtr args, Cardinal * num_args, XrmValuePtr fromVal, | |||
1253 | XrmValuePtr toVal) | |||
1254 | { | |||
1255 | static XawAsciiType type; | |||
1256 | static XrmQuark XtQEstring = NULLQUARK((XrmQuark) 0); | |||
1257 | static XrmQuark XtQEfile; | |||
1258 | XrmQuark q; | |||
1259 | char lowerName[40]; | |||
1260 | ||||
1261 | if (XtQEstring == NULLQUARK((XrmQuark) 0)) { | |||
1262 | XtQEstring = XrmPermStringToQuark(XtEstring"string"); | |||
1263 | XtQEfile = XrmPermStringToQuark(XtEfile"file"); | |||
1264 | } | |||
1265 | ||||
1266 | if (strlen ((char*)fromVal->addr) < sizeof lowerName) { | |||
1267 | XmuCopyISOLatin1Lowered(lowerName, (char *) fromVal->addr); | |||
1268 | q = XrmStringToQuark(lowerName); | |||
1269 | ||||
1270 | if (q == XtQEstring) type = XawAsciiString; | |||
1271 | else if (q == XtQEfile) type = XawAsciiFile; | |||
1272 | else { | |||
1273 | toVal->size = 0; | |||
1274 | toVal->addr = NULL((void*)0); | |||
1275 | return; | |||
1276 | } | |||
1277 | toVal->size = sizeof type; | |||
1278 | toVal->addr = (XPointer) &type; | |||
1279 | return; | |||
1280 | } | |||
1281 | toVal->size = 0; | |||
1282 | toVal->addr = NULL((void*)0); | |||
1283 | } | |||
1284 | ||||
1285 | #if (defined(ASCII_STRING) || defined(ASCII_DISK)) | |||
1286 | # include <X11/Xaw3d/Cardinals.h> | |||
1287 | #endif | |||
1288 | ||||
1289 | #ifdef ASCII_STRING | |||
1290 | /************************************************************ | |||
1291 | * | |||
1292 | * Compatability functions. | |||
1293 | * | |||
1294 | ************************************************************/ | |||
1295 | ||||
1296 | /* Function Name: AsciiStringSourceCreate | |||
1297 | * Description: Creates a string source. | |||
1298 | * Arguments: parent - the widget that will own this source. | |||
1299 | * args, num_args - the argument list. | |||
1300 | * Returns: a pointer to the new text source. | |||
1301 | */ | |||
1302 | ||||
1303 | Widget | |||
1304 | XawStringSourceCreate(Widget parent, ArgList args, Cardinal num_args) | |||
1305 | { | |||
1306 | XawTextSource src; | |||
1307 | ArgList ascii_args; | |||
1308 | Arg temp[2]; | |||
1309 | ||||
1310 | XtSetArg(temp[0], XtNtype, XawAsciiString)((void)( (temp[0]).name = ("type"), (temp[0]).value = (XtArgVal )(XawAsciiString) )); | |||
1311 | XtSetArg(temp[1], XtNuseStringInPlace, TRUE)((void)( (temp[1]).name = ("useStringInPlace"), (temp[1]).value = (XtArgVal)(1) )); | |||
1312 | ascii_args = XtMergeArgLists(temp, TWO, args, num_args); | |||
1313 | ||||
1314 | src = XtCreateWidget("genericAsciiString", asciiSrcObjectClass, parent, | |||
1315 | ascii_args, num_args + TWO); | |||
1316 | XtFree((char *)ascii_args); | |||
1317 | return(src); | |||
1318 | } | |||
1319 | ||||
1320 | /* | |||
1321 | * This is hacked up to try to emulate old functionality, it | |||
1322 | * may not work, as I have not old code to test it on. | |||
1323 | * | |||
1324 | * Chris D. Peterson 8/31/89. | |||
1325 | */ | |||
1326 | ||||
1327 | void | |||
1328 | XawTextSetLastPos (Widget w, XawTextPosition lastPos) | |||
1329 | { | |||
1330 | AsciiSrcObject src = (AsciiSrcObject) XawTextGetSource(w); | |||
1331 | ||||
1332 | src->ascii_src.piece_size = lastPos; | |||
1333 | } | |||
1334 | #endif /* ASCII_STRING */ | |||
1335 | ||||
1336 | #ifdef ASCII_DISK | |||
1337 | /* Function Name: AsciiDiskSourceCreate | |||
1338 | * Description: Creates a disk source. | |||
1339 | * Arguments: parent - the widget that will own this source. | |||
1340 | * args, num_args - the argument list. | |||
1341 | * Returns: a pointer to the new text source. | |||
1342 | */ | |||
1343 | ||||
1344 | Widget | |||
1345 | XawDiskSourceCreate(Widget parent, ArgList args, Cardinal num_args) | |||
1346 | { | |||
1347 | XawTextSource src; | |||
1348 | ArgList ascii_args; | |||
1349 | Arg temp[1]; | |||
1350 | int i; | |||
1351 | ||||
1352 | XtSetArg(temp[0], XtNtype, XawAsciiFile)((void)( (temp[0]).name = ("type"), (temp[0]).value = (XtArgVal )(XawAsciiFile) )); | |||
1353 | ascii_args = XtMergeArgLists(temp, ONE, args, num_args); | |||
1354 | num_args++; | |||
1355 | ||||
1356 | for (i = 0; i < num_args; i++) | |||
1357 | if (streq(ascii_args[i].name, XtNfile)( strcmp((ascii_args[i].name), (((char*)&XtStrings[194])) ) == 0 ) || | |||
1358 | streq(ascii_args[i].name, XtCFile)( strcmp((ascii_args[i].name), (((char*)&XtStrings[1012]) )) == 0 )) | |||
1359 | ascii_args[i].name = XtNstring((char*)&XtStrings[733]); | |||
1360 | ||||
1361 | src = XtCreateWidget("genericAsciiDisk", asciiSrcObjectClass, parent, | |||
1362 | ascii_args, num_args); | |||
1363 | XtFree((char *)ascii_args); | |||
1364 | return(src); | |||
1365 | } | |||
1366 | #endif /* ASCII_DISK */ |