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Update mojo sdk to rev 1dc8a9a5db73d3718d99917fadf31f5fb2ebad4f
[chromium-blink-merge.git] / third_party / libxml / src / error.c
blob7508d41b074b488447ab474cdf2607e3938a2d9c
1 /*
2 * error.c: module displaying/handling XML parser errors
3 *
4 * See Copyright for the status of this software.
5 *
6 * Daniel Veillard <daniel@veillard.com>
7 */
8
9 #define IN_LIBXML
10 #include "libxml.h"
11
12 #include <string.h>
13 #include <stdarg.h>
14 #include <libxml/parser.h>
15 #include <libxml/xmlerror.h>
16 #include <libxml/xmlmemory.h>
17 #include <libxml/globals.h>
18
19 void XMLCDECL xmlGenericErrorDefaultFunc (void *ctx ATTRIBUTE_UNUSED,
20 const char *msg,
21 ...);
22
23 #define XML_GET_VAR_STR(msg, str) { \
24 int size, prev_size = -1; \
25 int chars; \
26 char *larger; \
27 va_list ap; \
28 \
29 str = (char *) xmlMalloc(150); \
30 if (str != NULL) { \
31 \
32 size = 150; \
33 \
34 while (size < 64000) { \
35 va_start(ap, msg); \
36 chars = vsnprintf(str, size, msg, ap); \
37 va_end(ap); \
38 if ((chars > -1) && (chars < size)) { \
39 if (prev_size == chars) { \
40 break; \
41 } else { \
42 prev_size = chars; \
43 } \
44 } \
45 if (chars > -1) \
46 size += chars + 1; \
47 else \
48 size += 100; \
49 if ((larger = (char *) xmlRealloc(str, size)) == NULL) {\
50 break; \
51 } \
52 str = larger; \
53 }} \
54 }
55
56 /************************************************************************
57 * *
58 * Handling of out of context errors *
59 * *
60 ************************************************************************/
61
62 /**
63 * xmlGenericErrorDefaultFunc:
64 * @ctx: an error context
65 * @msg: the message to display/transmit
66 * @...: extra parameters for the message display
67 *
68 * Default handler for out of context error messages.
69 */
70 void XMLCDECL
71 xmlGenericErrorDefaultFunc(void *ctx ATTRIBUTE_UNUSED, const char *msg, ...) {
72 va_list args;
73
74 if (xmlGenericErrorContext == NULL)
75 xmlGenericErrorContext = (void *) stderr;
76
77 va_start(args, msg);
78 vfprintf((FILE *)xmlGenericErrorContext, msg, args);
79 va_end(args);
80 }
81
82 /**
83 * initGenericErrorDefaultFunc:
84 * @handler: the handler
85 *
86 * Set or reset (if NULL) the default handler for generic errors
87 * to the builtin error function.
88 */
89 void
90 initGenericErrorDefaultFunc(xmlGenericErrorFunc * handler)
91 {
92 if (handler == NULL)
93 xmlGenericError = xmlGenericErrorDefaultFunc;
94 else
95 xmlGenericError = (*handler);
96 }
97
98 /**
99 * xmlSetGenericErrorFunc:
100 * @ctx: the new error handling context
101 * @handler: the new handler function
102 *
103 * Function to reset the handler and the error context for out of
104 * context error messages.
105 * This simply means that @handler will be called for subsequent
106 * error messages while not parsing nor validating. And @ctx will
107 * be passed as first argument to @handler
108 * One can simply force messages to be emitted to another FILE * than
109 * stderr by setting @ctx to this file handle and @handler to NULL.
110 * For multi-threaded applications, this must be set separately for each thread.
111 */
112 void
113 xmlSetGenericErrorFunc(void *ctx, xmlGenericErrorFunc handler) {
114 xmlGenericErrorContext = ctx;
115 if (handler != NULL)
116 xmlGenericError = handler;
117 else
118 xmlGenericError = xmlGenericErrorDefaultFunc;
119 }
120
121 /**
122 * xmlSetStructuredErrorFunc:
123 * @ctx: the new error handling context
124 * @handler: the new handler function
125 *
126 * Function to reset the handler and the error context for out of
127 * context structured error messages.
128 * This simply means that @handler will be called for subsequent
129 * error messages while not parsing nor validating. And @ctx will
130 * be passed as first argument to @handler
131 * For multi-threaded applications, this must be set separately for each thread.
132 */
133 void
134 xmlSetStructuredErrorFunc(void *ctx, xmlStructuredErrorFunc handler) {
135 xmlStructuredErrorContext = ctx;
136 xmlStructuredError = handler;
137 }
138
139 /************************************************************************
140 * *
141 * Handling of parsing errors *
142 * *
143 ************************************************************************/
144
145 /**
146 * xmlParserPrintFileInfo:
147 * @input: an xmlParserInputPtr input
148 *
149 * Displays the associated file and line informations for the current input
150 */
151
152 void
153 xmlParserPrintFileInfo(xmlParserInputPtr input) {
154 if (input != NULL) {
155 if (input->filename)
156 xmlGenericError(xmlGenericErrorContext,
157 "%s:%d: ", input->filename,
158 input->line);
159 else
160 xmlGenericError(xmlGenericErrorContext,
161 "Entity: line %d: ", input->line);
162 }
163 }
164
165 /**
166 * xmlParserPrintFileContext:
167 * @input: an xmlParserInputPtr input
168 *
169 * Displays current context within the input content for error tracking
170 */
171
172 static void
173 xmlParserPrintFileContextInternal(xmlParserInputPtr input ,
174 xmlGenericErrorFunc channel, void *data ) {
175 const xmlChar *cur, *base;
176 unsigned int n, col; /* GCC warns if signed, because compared with sizeof() */
177 xmlChar content[81]; /* space for 80 chars + line terminator */
178 xmlChar *ctnt;
179
180 if (input == NULL) return;
181 cur = input->cur;
182 base = input->base;
183 /* skip backwards over any end-of-lines */
184 while ((cur > base) && ((*(cur) == '\n') || (*(cur) == '\r'))) {
185 cur--;
186 }
187 n = 0;
188 /* search backwards for beginning-of-line (to max buff size) */
189 while ((n++ < (sizeof(content)-1)) && (cur > base) &&
190 (*(cur) != '\n') && (*(cur) != '\r'))
191 cur--;
192 if ((*(cur) == '\n') || (*(cur) == '\r')) cur++;
193 /* calculate the error position in terms of the current position */
194 col = input->cur - cur;
195 /* search forward for end-of-line (to max buff size) */
196 n = 0;
197 ctnt = content;
198 /* copy selected text to our buffer */
199 while ((*cur != 0) && (*(cur) != '\n') &&
200 (*(cur) != '\r') && (n < sizeof(content)-1)) {
201 *ctnt++ = *cur++;
202 n++;
203 }
204 *ctnt = 0;
205 /* print out the selected text */
206 channel(data ,"%s\n", content);
207 /* create blank line with problem pointer */
208 n = 0;
209 ctnt = content;
210 /* (leave buffer space for pointer + line terminator) */
211 while ((n<col) && (n++ < sizeof(content)-2) && (*ctnt != 0)) {
212 if (*(ctnt) != '\t')
213 *(ctnt) = ' ';
214 ctnt++;
215 }
216 *ctnt++ = '^';
217 *ctnt = 0;
218 channel(data ,"%s\n", content);
219 }
220
221 /**
222 * xmlParserPrintFileContext:
223 * @input: an xmlParserInputPtr input
224 *
225 * Displays current context within the input content for error tracking
226 */
227 void
228 xmlParserPrintFileContext(xmlParserInputPtr input) {
229 xmlParserPrintFileContextInternal(input, xmlGenericError,
230 xmlGenericErrorContext);
231 }
232
233 /**
234 * xmlReportError:
235 * @err: the error
236 * @ctx: the parser context or NULL
237 * @str: the formatted error message
238 *
239 * Report an erro with its context, replace the 4 old error/warning
240 * routines.
241 */
242 static void
243 xmlReportError(xmlErrorPtr err, xmlParserCtxtPtr ctxt, const char *str,
244 xmlGenericErrorFunc channel, void *data)
245 {
246 char *file = NULL;
247 int line = 0;
248 int code = -1;
249 int domain;
250 const xmlChar *name = NULL;
251 xmlNodePtr node;
252 xmlErrorLevel level;
253 xmlParserInputPtr input = NULL;
254 xmlParserInputPtr cur = NULL;
255
256 if (err == NULL)
257 return;
258
259 if (channel == NULL) {
260 channel = xmlGenericError;
261 data = xmlGenericErrorContext;
262 }
263 file = err->file;
264 line = err->line;
265 code = err->code;
266 domain = err->domain;
267 level = err->level;
268 node = err->node;
269
270 if (code == XML_ERR_OK)
271 return;
272
273 if ((node != NULL) && (node->type == XML_ELEMENT_NODE))
274 name = node->name;
275
276 /*
277 * Maintain the compatibility with the legacy error handling
278 */
279 if (ctxt != NULL) {
280 input = ctxt->input;
281 if ((input != NULL) && (input->filename == NULL) &&
282 (ctxt->inputNr > 1)) {
283 cur = input;
284 input = ctxt->inputTab[ctxt->inputNr - 2];
285 }
286 if (input != NULL) {
287 if (input->filename)
288 channel(data, "%s:%d: ", input->filename, input->line);
289 else if ((line != 0) && (domain == XML_FROM_PARSER))
290 channel(data, "Entity: line %d: ", input->line);
291 }
292 } else {
293 if (file != NULL)
294 channel(data, "%s:%d: ", file, line);
295 else if ((line != 0) && (domain == XML_FROM_PARSER))
296 channel(data, "Entity: line %d: ", line);
297 }
298 if (name != NULL) {
299 channel(data, "element %s: ", name);
300 }
301 switch (domain) {
302 case XML_FROM_PARSER:
303 channel(data, "parser ");
304 break;
305 case XML_FROM_NAMESPACE:
306 channel(data, "namespace ");
307 break;
308 case XML_FROM_DTD:
309 case XML_FROM_VALID:
310 channel(data, "validity ");
311 break;
312 case XML_FROM_HTML:
313 channel(data, "HTML parser ");
314 break;
315 case XML_FROM_MEMORY:
316 channel(data, "memory ");
317 break;
318 case XML_FROM_OUTPUT:
319 channel(data, "output ");
320 break;
321 case XML_FROM_IO:
322 channel(data, "I/O ");
323 break;
324 case XML_FROM_XINCLUDE:
325 channel(data, "XInclude ");
326 break;
327 case XML_FROM_XPATH:
328 channel(data, "XPath ");
329 break;
330 case XML_FROM_XPOINTER:
331 channel(data, "parser ");
332 break;
333 case XML_FROM_REGEXP:
334 channel(data, "regexp ");
335 break;
336 case XML_FROM_MODULE:
337 channel(data, "module ");
338 break;
339 case XML_FROM_SCHEMASV:
340 channel(data, "Schemas validity ");
341 break;
342 case XML_FROM_SCHEMASP:
343 channel(data, "Schemas parser ");
344 break;
345 case XML_FROM_RELAXNGP:
346 channel(data, "Relax-NG parser ");
347 break;
348 case XML_FROM_RELAXNGV:
349 channel(data, "Relax-NG validity ");
350 break;
351 case XML_FROM_CATALOG:
352 channel(data, "Catalog ");
353 break;
354 case XML_FROM_C14N:
355 channel(data, "C14N ");
356 break;
357 case XML_FROM_XSLT:
358 channel(data, "XSLT ");
359 break;
360 case XML_FROM_I18N:
361 channel(data, "encoding ");
362 break;
363 default:
364 break;
365 }
366 switch (level) {
367 case XML_ERR_NONE:
368 channel(data, ": ");
369 break;
370 case XML_ERR_WARNING:
371 channel(data, "warning : ");
372 break;
373 case XML_ERR_ERROR:
374 channel(data, "error : ");
375 break;
376 case XML_ERR_FATAL:
377 channel(data, "error : ");
378 break;
379 }
380 if (str != NULL) {
381 int len;
382 len = xmlStrlen((const xmlChar *)str);
383 if ((len > 0) && (str[len - 1] != '\n'))
384 channel(data, "%s\n", str);
385 else
386 channel(data, "%s", str);
387 } else {
388 channel(data, "%s\n", "out of memory error");
389 }
390
391 if (ctxt != NULL) {
392 xmlParserPrintFileContextInternal(input, channel, data);
393 if (cur != NULL) {
394 if (cur->filename)
395 channel(data, "%s:%d: \n", cur->filename, cur->line);
396 else if ((line != 0) && (domain == XML_FROM_PARSER))
397 channel(data, "Entity: line %d: \n", cur->line);
398 xmlParserPrintFileContextInternal(cur, channel, data);
399 }
400 }
401 if ((domain == XML_FROM_XPATH) && (err->str1 != NULL) &&
402 (err->int1 < 100) &&
403 (err->int1 < xmlStrlen((const xmlChar *)err->str1))) {
404 xmlChar buf[150];
405 int i;
406
407 channel(data, "%s\n", err->str1);
408 for (i=0;i < err->int1;i++)
409 buf[i] = ' ';
410 buf[i++] = '^';
411 buf[i] = 0;
412 channel(data, "%s\n", buf);
413 }
414 }
415
416 /**
417 * __xmlRaiseError:
418 * @schannel: the structured callback channel
419 * @channel: the old callback channel
420 * @data: the callback data
421 * @ctx: the parser context or NULL
422 * @ctx: the parser context or NULL
423 * @domain: the domain for the error
424 * @code: the code for the error
425 * @level: the xmlErrorLevel for the error
426 * @file: the file source of the error (or NULL)
427 * @line: the line of the error or 0 if N/A
428 * @str1: extra string info
429 * @str2: extra string info
430 * @str3: extra string info
431 * @int1: extra int info
432 * @col: column number of the error or 0 if N/A
433 * @msg: the message to display/transmit
434 * @...: extra parameters for the message display
435 *
436 * Update the appropriate global or contextual error structure,
437 * then forward the error message down the parser or generic
438 * error callback handler
439 */
440 void XMLCDECL
441 __xmlRaiseError(xmlStructuredErrorFunc schannel,
442 xmlGenericErrorFunc channel, void *data, void *ctx,
443 void *nod, int domain, int code, xmlErrorLevel level,
444 const char *file, int line, const char *str1,
445 const char *str2, const char *str3, int int1, int col,
446 const char *msg, ...)
447 {
448 xmlParserCtxtPtr ctxt = NULL;
449 xmlNodePtr node = (xmlNodePtr) nod;
450 char *str = NULL;
451 xmlParserInputPtr input = NULL;
452 xmlErrorPtr to = &xmlLastError;
453 xmlNodePtr baseptr = NULL;
454
455 if ((xmlGetWarningsDefaultValue == 0) && (level == XML_ERR_WARNING))
456 return;
457 if ((domain == XML_FROM_PARSER) || (domain == XML_FROM_HTML) ||
458 (domain == XML_FROM_DTD) || (domain == XML_FROM_NAMESPACE) ||
459 (domain == XML_FROM_IO) || (domain == XML_FROM_VALID)) {
460 ctxt = (xmlParserCtxtPtr) ctx;
461 if ((schannel == NULL) && (ctxt != NULL) && (ctxt->sax != NULL) &&
462 (ctxt->sax->initialized == XML_SAX2_MAGIC))
463 schannel = ctxt->sax->serror;
464 }
465 /*
466 * Check if structured error handler set
467 */
468 if (schannel == NULL) {
469 schannel = xmlStructuredError;
470 /*
471 * if user has defined handler, change data ptr to user's choice
472 */
473 if (schannel != NULL)
474 data = xmlStructuredErrorContext;
475 }
476 if ((domain == XML_FROM_VALID) &&
477 ((channel == xmlParserValidityError) ||
478 (channel == xmlParserValidityWarning))) {
479 ctxt = (xmlParserCtxtPtr) ctx;
480 if ((schannel == NULL) && (ctxt != NULL) && (ctxt->sax != NULL) &&
481 (ctxt->sax->initialized == XML_SAX2_MAGIC))
482 schannel = ctxt->sax->serror;
483 }
484 if (code == XML_ERR_OK)
485 return;
486 /*
487 * Formatting the message
488 */
489 if (msg == NULL) {
490 str = (char *) xmlStrdup(BAD_CAST "No error message provided");
491 } else {
492 XML_GET_VAR_STR(msg, str);
493 }
494
495 /*
496 * specific processing if a parser context is provided
497 */
498 if (ctxt != NULL) {
499 if (file == NULL) {
500 input = ctxt->input;
501 if ((input != NULL) && (input->filename == NULL) &&
502 (ctxt->inputNr > 1)) {
503 input = ctxt->inputTab[ctxt->inputNr - 2];
504 }
505 if (input != NULL) {
506 file = input->filename;
507 line = input->line;
508 col = input->col;
509 }
510 }
511 to = &ctxt->lastError;
512 } else if ((node != NULL) && (file == NULL)) {
513 int i;
514
515 if ((node->doc != NULL) && (node->doc->URL != NULL)) {
516 baseptr = node;
517 /* file = (const char *) node->doc->URL; */
518 }
519 for (i = 0;
520 ((i < 10) && (node != NULL) && (node->type != XML_ELEMENT_NODE));
521 i++)
522 node = node->parent;
523 if ((baseptr == NULL) && (node != NULL) &&
524 (node->doc != NULL) && (node->doc->URL != NULL))
525 baseptr = node;
526
527 if ((node != NULL) && (node->type == XML_ELEMENT_NODE))
528 line = node->line;
529 }
530
531 /*
532 * Save the information about the error
533 */
534 xmlResetError(to);
535 to->domain = domain;
536 to->code = code;
537 to->message = str;
538 to->level = level;
539 if (file != NULL)
540 to->file = (char *) xmlStrdup((const xmlChar *) file);
541 else if (baseptr != NULL) {
542 #ifdef LIBXML_XINCLUDE_ENABLED
543 /*
544 * We check if the error is within an XInclude section and,
545 * if so, attempt to print out the href of the XInclude instead
546 * of the usual "base" (doc->URL) for the node (bug 152623).
547 */
548 xmlNodePtr prev = baseptr;
549 int inclcount = 0;
550 while (prev != NULL) {
551 if (prev->prev == NULL)
552 prev = prev->parent;
553 else {
554 prev = prev->prev;
555 if (prev->type == XML_XINCLUDE_START) {
556 if (--inclcount < 0)
557 break;
558 } else if (prev->type == XML_XINCLUDE_END)
559 inclcount++;
560 }
561 }
562 if (prev != NULL) {
563 if (prev->type == XML_XINCLUDE_START) {
564 prev->type = XML_ELEMENT_NODE;
565 to->file = (char *) xmlGetProp(prev, BAD_CAST "href");
566 prev->type = XML_XINCLUDE_START;
567 } else {
568 to->file = (char *) xmlGetProp(prev, BAD_CAST "href");
569 }
570 } else
571 #endif
572 to->file = (char *) xmlStrdup(baseptr->doc->URL);
573 if ((to->file == NULL) && (node != NULL) && (node->doc != NULL)) {
574 to->file = (char *) xmlStrdup(node->doc->URL);
575 }
576 }
577 to->line = line;
578 if (str1 != NULL)
579 to->str1 = (char *) xmlStrdup((const xmlChar *) str1);
580 if (str2 != NULL)
581 to->str2 = (char *) xmlStrdup((const xmlChar *) str2);
582 if (str3 != NULL)
583 to->str3 = (char *) xmlStrdup((const xmlChar *) str3);
584 to->int1 = int1;
585 to->int2 = col;
586 to->node = node;
587 to->ctxt = ctx;
588
589 if (to != &xmlLastError)
590 xmlCopyError(to,&xmlLastError);
591
592 /*
593 * Find the callback channel if channel param is NULL
594 */
595 if ((ctxt != NULL) && (channel == NULL) &&
596 (xmlStructuredError == NULL) && (ctxt->sax != NULL)) {
597 if (level == XML_ERR_WARNING)
598 channel = ctxt->sax->warning;
599 else
600 channel = ctxt->sax->error;
601 data = ctxt->userData;
602 } else if (channel == NULL) {
603 if ((schannel == NULL) && (xmlStructuredError != NULL)) {
604 schannel = xmlStructuredError;
605 data = xmlStructuredErrorContext;
606 } else {
607 channel = xmlGenericError;
608 if (!data) {
609 data = xmlGenericErrorContext;
610 }
611 }
612 }
613 if (schannel != NULL) {
614 schannel(data, to);
615 return;
616 }
617 if (channel == NULL)
618 return;
619
620 if ((channel == xmlParserError) ||
621 (channel == xmlParserWarning) ||
622 (channel == xmlParserValidityError) ||
623 (channel == xmlParserValidityWarning))
624 xmlReportError(to, ctxt, str, NULL, NULL);
625 else if ((channel == (xmlGenericErrorFunc) fprintf) ||
626 (channel == xmlGenericErrorDefaultFunc))
627 xmlReportError(to, ctxt, str, channel, data);
628 else
629 channel(data, "%s", str);
630 }
631
632 /**
633 * __xmlSimpleError:
634 * @domain: where the error comes from
635 * @code: the error code
636 * @node: the context node
637 * @extra: extra informations
638 *
639 * Handle an out of memory condition
640 */
641 void
642 __xmlSimpleError(int domain, int code, xmlNodePtr node,
643 const char *msg, const char *extra)
644 {
645
646 if (code == XML_ERR_NO_MEMORY) {
647 if (extra)
648 __xmlRaiseError(NULL, NULL, NULL, NULL, node, domain,
649 XML_ERR_NO_MEMORY, XML_ERR_FATAL, NULL, 0, extra,
650 NULL, NULL, 0, 0,
651 "Memory allocation failed : %s\n", extra);
652 else
653 __xmlRaiseError(NULL, NULL, NULL, NULL, node, domain,
654 XML_ERR_NO_MEMORY, XML_ERR_FATAL, NULL, 0, NULL,
655 NULL, NULL, 0, 0, "Memory allocation failed\n");
656 } else {
657 __xmlRaiseError(NULL, NULL, NULL, NULL, node, domain,
658 code, XML_ERR_ERROR, NULL, 0, extra,
659 NULL, NULL, 0, 0, msg, extra);
660 }
661 }
662 /**
663 * xmlParserError:
664 * @ctx: an XML parser context
665 * @msg: the message to display/transmit
666 * @...: extra parameters for the message display
667 *
668 * Display and format an error messages, gives file, line, position and
669 * extra parameters.
670 */
671 void XMLCDECL
672 xmlParserError(void *ctx, const char *msg, ...)
673 {
674 xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx;
675 xmlParserInputPtr input = NULL;
676 xmlParserInputPtr cur = NULL;
677 char * str;
678
679 if (ctxt != NULL) {
680 input = ctxt->input;
681 if ((input != NULL) && (input->filename == NULL) &&
682 (ctxt->inputNr > 1)) {
683 cur = input;
684 input = ctxt->inputTab[ctxt->inputNr - 2];
685 }
686 xmlParserPrintFileInfo(input);
687 }
688
689 xmlGenericError(xmlGenericErrorContext, "error: ");
690 XML_GET_VAR_STR(msg, str);
691 xmlGenericError(xmlGenericErrorContext, "%s", str);
692 if (str != NULL)
693 xmlFree(str);
694
695 if (ctxt != NULL) {
696 xmlParserPrintFileContext(input);
697 if (cur != NULL) {
698 xmlParserPrintFileInfo(cur);
699 xmlGenericError(xmlGenericErrorContext, "\n");
700 xmlParserPrintFileContext(cur);
701 }
702 }
703 }
704
705 /**
706 * xmlParserWarning:
707 * @ctx: an XML parser context
708 * @msg: the message to display/transmit
709 * @...: extra parameters for the message display
710 *
711 * Display and format a warning messages, gives file, line, position and
712 * extra parameters.
713 */
714 void XMLCDECL
715 xmlParserWarning(void *ctx, const char *msg, ...)
716 {
717 xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx;
718 xmlParserInputPtr input = NULL;
719 xmlParserInputPtr cur = NULL;
720 char * str;
721
722 if (ctxt != NULL) {
723 input = ctxt->input;
724 if ((input != NULL) && (input->filename == NULL) &&
725 (ctxt->inputNr > 1)) {
726 cur = input;
727 input = ctxt->inputTab[ctxt->inputNr - 2];
728 }
729 xmlParserPrintFileInfo(input);
730 }
731
732 xmlGenericError(xmlGenericErrorContext, "warning: ");
733 XML_GET_VAR_STR(msg, str);
734 xmlGenericError(xmlGenericErrorContext, "%s", str);
735 if (str != NULL)
736 xmlFree(str);
737
738 if (ctxt != NULL) {
739 xmlParserPrintFileContext(input);
740 if (cur != NULL) {
741 xmlParserPrintFileInfo(cur);
742 xmlGenericError(xmlGenericErrorContext, "\n");
743 xmlParserPrintFileContext(cur);
744 }
745 }
746 }
747
748 /************************************************************************
749 * *
750 * Handling of validation errors *
751 * *
752 ************************************************************************/
753
754 /**
755 * xmlParserValidityError:
756 * @ctx: an XML parser context
757 * @msg: the message to display/transmit
758 * @...: extra parameters for the message display
759 *
760 * Display and format an validity error messages, gives file,
761 * line, position and extra parameters.
762 */
763 void XMLCDECL
764 xmlParserValidityError(void *ctx, const char *msg, ...)
765 {
766 xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx;
767 xmlParserInputPtr input = NULL;
768 char * str;
769 int len = xmlStrlen((const xmlChar *) msg);
770 static int had_info = 0;
771
772 if ((len > 1) && (msg[len - 2] != ':')) {
773 if (ctxt != NULL) {
774 input = ctxt->input;
775 if ((input->filename == NULL) && (ctxt->inputNr > 1))
776 input = ctxt->inputTab[ctxt->inputNr - 2];
777
778 if (had_info == 0) {
779 xmlParserPrintFileInfo(input);
780 }
781 }
782 xmlGenericError(xmlGenericErrorContext, "validity error: ");
783 had_info = 0;
784 } else {
785 had_info = 1;
786 }
787
788 XML_GET_VAR_STR(msg, str);
789 xmlGenericError(xmlGenericErrorContext, "%s", str);
790 if (str != NULL)
791 xmlFree(str);
792
793 if ((ctxt != NULL) && (input != NULL)) {
794 xmlParserPrintFileContext(input);
795 }
796 }
797
798 /**
799 * xmlParserValidityWarning:
800 * @ctx: an XML parser context
801 * @msg: the message to display/transmit
802 * @...: extra parameters for the message display
803 *
804 * Display and format a validity warning messages, gives file, line,
805 * position and extra parameters.
806 */
807 void XMLCDECL
808 xmlParserValidityWarning(void *ctx, const char *msg, ...)
809 {
810 xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx;
811 xmlParserInputPtr input = NULL;
812 char * str;
813 int len = xmlStrlen((const xmlChar *) msg);
814
815 if ((ctxt != NULL) && (len != 0) && (msg[len - 1] != ':')) {
816 input = ctxt->input;
817 if ((input->filename == NULL) && (ctxt->inputNr > 1))
818 input = ctxt->inputTab[ctxt->inputNr - 2];
819
820 xmlParserPrintFileInfo(input);
821 }
822
823 xmlGenericError(xmlGenericErrorContext, "validity warning: ");
824 XML_GET_VAR_STR(msg, str);
825 xmlGenericError(xmlGenericErrorContext, "%s", str);
826 if (str != NULL)
827 xmlFree(str);
828
829 if (ctxt != NULL) {
830 xmlParserPrintFileContext(input);
831 }
832 }
833
834
835 /************************************************************************
836 * *
837 * Extended Error Handling *
838 * *
839 ************************************************************************/
840
841 /**
842 * xmlGetLastError:
843 *
844 * Get the last global error registered. This is per thread if compiled
845 * with thread support.
846 *
847 * Returns NULL if no error occured or a pointer to the error
848 */
849 xmlErrorPtr
850 xmlGetLastError(void)
851 {
852 if (xmlLastError.code == XML_ERR_OK)
853 return (NULL);
854 return (&xmlLastError);
855 }
856
857 /**
858 * xmlResetError:
859 * @err: pointer to the error.
860 *
861 * Cleanup the error.
862 */
863 void
864 xmlResetError(xmlErrorPtr err)
865 {
866 if (err == NULL)
867 return;
868 if (err->code == XML_ERR_OK)
869 return;
870 if (err->message != NULL)
871 xmlFree(err->message);
872 if (err->file != NULL)
873 xmlFree(err->file);
874 if (err->str1 != NULL)
875 xmlFree(err->str1);
876 if (err->str2 != NULL)
877 xmlFree(err->str2);
878 if (err->str3 != NULL)
879 xmlFree(err->str3);
880 memset(err, 0, sizeof(xmlError));
881 err->code = XML_ERR_OK;
882 }
883
884 /**
885 * xmlResetLastError:
886 *
887 * Cleanup the last global error registered. For parsing error
888 * this does not change the well-formedness result.
889 */
890 void
891 xmlResetLastError(void)
892 {
893 if (xmlLastError.code == XML_ERR_OK)
894 return;
895 xmlResetError(&xmlLastError);
896 }
897
898 /**
899 * xmlCtxtGetLastError:
900 * @ctx: an XML parser context
901 *
902 * Get the last parsing error registered.
903 *
904 * Returns NULL if no error occured or a pointer to the error
905 */
906 xmlErrorPtr
907 xmlCtxtGetLastError(void *ctx)
908 {
909 xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx;
910
911 if (ctxt == NULL)
912 return (NULL);
913 if (ctxt->lastError.code == XML_ERR_OK)
914 return (NULL);
915 return (&ctxt->lastError);
916 }
917
918 /**
919 * xmlCtxtResetLastError:
920 * @ctx: an XML parser context
921 *
922 * Cleanup the last global error registered. For parsing error
923 * this does not change the well-formedness result.
924 */
925 void
926 xmlCtxtResetLastError(void *ctx)
927 {
928 xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx;
929
930 if (ctxt == NULL)
931 return;
932 ctxt->errNo = XML_ERR_OK;
933 if (ctxt->lastError.code == XML_ERR_OK)
934 return;
935 xmlResetError(&ctxt->lastError);
936 }
937
938 /**
939 * xmlCopyError:
940 * @from: a source error
941 * @to: a target error
942 *
943 * Save the original error to the new place.
944 *
945 * Returns 0 in case of success and -1 in case of error.
946 */
947 int
948 xmlCopyError(xmlErrorPtr from, xmlErrorPtr to) {
949 char *message, *file, *str1, *str2, *str3;
950
951 if ((from == NULL) || (to == NULL))
952 return(-1);
953
954 message = (char *) xmlStrdup((xmlChar *) from->message);
955 file = (char *) xmlStrdup ((xmlChar *) from->file);
956 str1 = (char *) xmlStrdup ((xmlChar *) from->str1);
957 str2 = (char *) xmlStrdup ((xmlChar *) from->str2);
958 str3 = (char *) xmlStrdup ((xmlChar *) from->str3);
959
960 if (to->message != NULL)
961 xmlFree(to->message);
962 if (to->file != NULL)
963 xmlFree(to->file);
964 if (to->str1 != NULL)
965 xmlFree(to->str1);
966 if (to->str2 != NULL)
967 xmlFree(to->str2);
968 if (to->str3 != NULL)
969 xmlFree(to->str3);
970 to->domain = from->domain;
971 to->code = from->code;
972 to->level = from->level;
973 to->line = from->line;
974 to->node = from->node;
975 to->int1 = from->int1;
976 to->int2 = from->int2;
977 to->node = from->node;
978 to->ctxt = from->ctxt;
979 to->message = message;
980 to->file = file;
981 to->str1 = str1;
982 to->str2 = str2;
983 to->str3 = str3;
984
985 return 0;
986 }
987
988 #define bottom_error
989 #include "elfgcchack.h"