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
xmlGenericErrorDefaultFunc(void * ctx ATTRIBUTE_UNUSED,const char * msg,...)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
initGenericErrorDefaultFunc(xmlGenericErrorFunc * handler)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
xmlSetGenericErrorFunc(void * ctx,xmlGenericErrorFunc handler)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
xmlSetStructuredErrorFunc(void * ctx,xmlStructuredErrorFunc handler)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
xmlParserPrintFileInfo(xmlParserInputPtr input)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
xmlParserPrintFileContextInternal(xmlParserInputPtr input,xmlGenericErrorFunc channel,void * data)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) || (input->cur == NULL) ||
181 (*input->cur == 0)) return;
182
183 cur = input->cur;
184 base = input->base;
185 /* skip backwards over any end-of-lines */
186 while ((cur > base) && ((*(cur) == '\n') || (*(cur) == '\r'))) {
187 cur--;
188 }
189 n = 0;
190 /* search backwards for beginning-of-line (to max buff size) */
191 while ((n++ < (sizeof(content)-1)) && (cur > base) &&
192 (*(cur) != '\n') && (*(cur) != '\r'))
193 cur--;
194 if ((*(cur) == '\n') || (*(cur) == '\r')) cur++;
195 /* calculate the error position in terms of the current position */
196 col = input->cur - cur;
197 /* search forward for end-of-line (to max buff size) */
198 n = 0;
199 ctnt = content;
200 /* copy selected text to our buffer */
201 while ((*cur != 0) && (*(cur) != '\n') &&
202 (*(cur) != '\r') && (n < sizeof(content)-1)) {
203 *ctnt++ = *cur++;
204 n++;
205 }
206 *ctnt = 0;
207 /* print out the selected text */
208 channel(data ,"%s\n", content);
209 /* create blank line with problem pointer */
210 n = 0;
211 ctnt = content;
212 /* (leave buffer space for pointer + line terminator) */
213 while ((n<col) && (n++ < sizeof(content)-2) && (*ctnt != 0)) {
214 if (*(ctnt) != '\t')
215 *(ctnt) = ' ';
216 ctnt++;
217 }
218 *ctnt++ = '^';
219 *ctnt = 0;
220 channel(data ,"%s\n", content);
221 }
222
223 /**
224 * xmlParserPrintFileContext:
225 * @input: an xmlParserInputPtr input
226 *
227 * Displays current context within the input content for error tracking
228 */
229 void
xmlParserPrintFileContext(xmlParserInputPtr input)230 xmlParserPrintFileContext(xmlParserInputPtr input) {
231 xmlParserPrintFileContextInternal(input, xmlGenericError,
232 xmlGenericErrorContext);
233 }
234
235 /**
236 * xmlReportError:
237 * @err: the error
238 * @ctx: the parser context or NULL
239 * @str: the formatted error message
240 *
241 * Report an erro with its context, replace the 4 old error/warning
242 * routines.
243 */
244 static void
xmlReportError(xmlErrorPtr err,xmlParserCtxtPtr ctxt,const char * str,xmlGenericErrorFunc channel,void * data)245 xmlReportError(xmlErrorPtr err, xmlParserCtxtPtr ctxt, const char *str,
246 xmlGenericErrorFunc channel, void *data)
247 {
248 char *file = NULL;
249 int line = 0;
250 int code = -1;
251 int domain;
252 const xmlChar *name = NULL;
253 xmlNodePtr node;
254 xmlErrorLevel level;
255 xmlParserInputPtr input = NULL;
256 xmlParserInputPtr cur = NULL;
257
258 if (err == NULL)
259 return;
260
261 if (channel == NULL) {
262 channel = xmlGenericError;
263 data = xmlGenericErrorContext;
264 }
265 file = err->file;
266 line = err->line;
267 code = err->code;
268 domain = err->domain;
269 level = err->level;
270 node = err->node;
271
272 if (code == XML_ERR_OK)
273 return;
274
275 if ((node != NULL) && (node->type == XML_ELEMENT_NODE))
276 name = node->name;
277
278 /*
279 * Maintain the compatibility with the legacy error handling
280 */
281 if (ctxt != NULL) {
282 input = ctxt->input;
283 if ((input != NULL) && (input->filename == NULL) &&
284 (ctxt->inputNr > 1)) {
285 cur = input;
286 input = ctxt->inputTab[ctxt->inputNr - 2];
287 }
288 if (input != NULL) {
289 if (input->filename)
290 channel(data, "%s:%d: ", input->filename, input->line);
291 else if ((line != 0) && (domain == XML_FROM_PARSER))
292 channel(data, "Entity: line %d: ", input->line);
293 }
294 } else {
295 if (file != NULL)
296 channel(data, "%s:%d: ", file, line);
297 else if ((line != 0) &&
298 ((domain == XML_FROM_PARSER) || (domain == XML_FROM_SCHEMASV)||
299 (domain == XML_FROM_SCHEMASP)||(domain == XML_FROM_DTD) ||
300 (domain == XML_FROM_RELAXNGP)||(domain == XML_FROM_RELAXNGV)))
301 channel(data, "Entity: line %d: ", line);
302 }
303 if (name != NULL) {
304 channel(data, "element %s: ", name);
305 }
306 switch (domain) {
307 case XML_FROM_PARSER:
308 channel(data, "parser ");
309 break;
310 case XML_FROM_NAMESPACE:
311 channel(data, "namespace ");
312 break;
313 case XML_FROM_DTD:
314 case XML_FROM_VALID:
315 channel(data, "validity ");
316 break;
317 case XML_FROM_HTML:
318 channel(data, "HTML parser ");
319 break;
320 case XML_FROM_MEMORY:
321 channel(data, "memory ");
322 break;
323 case XML_FROM_OUTPUT:
324 channel(data, "output ");
325 break;
326 case XML_FROM_IO:
327 channel(data, "I/O ");
328 break;
329 case XML_FROM_XINCLUDE:
330 channel(data, "XInclude ");
331 break;
332 case XML_FROM_XPATH:
333 channel(data, "XPath ");
334 break;
335 case XML_FROM_XPOINTER:
336 channel(data, "parser ");
337 break;
338 case XML_FROM_REGEXP:
339 channel(data, "regexp ");
340 break;
341 case XML_FROM_MODULE:
342 channel(data, "module ");
343 break;
344 case XML_FROM_SCHEMASV:
345 channel(data, "Schemas validity ");
346 break;
347 case XML_FROM_SCHEMASP:
348 channel(data, "Schemas parser ");
349 break;
350 case XML_FROM_RELAXNGP:
351 channel(data, "Relax-NG parser ");
352 break;
353 case XML_FROM_RELAXNGV:
354 channel(data, "Relax-NG validity ");
355 break;
356 case XML_FROM_CATALOG:
357 channel(data, "Catalog ");
358 break;
359 case XML_FROM_C14N:
360 channel(data, "C14N ");
361 break;
362 case XML_FROM_XSLT:
363 channel(data, "XSLT ");
364 break;
365 case XML_FROM_I18N:
366 channel(data, "encoding ");
367 break;
368 case XML_FROM_SCHEMATRONV:
369 channel(data, "schematron ");
370 break;
371 case XML_FROM_BUFFER:
372 channel(data, "internal buffer ");
373 break;
374 case XML_FROM_URI:
375 channel(data, "URI ");
376 break;
377 default:
378 break;
379 }
380 switch (level) {
381 case XML_ERR_NONE:
382 channel(data, ": ");
383 break;
384 case XML_ERR_WARNING:
385 channel(data, "warning : ");
386 break;
387 case XML_ERR_ERROR:
388 channel(data, "error : ");
389 break;
390 case XML_ERR_FATAL:
391 channel(data, "error : ");
392 break;
393 }
394 if (str != NULL) {
395 int len;
396 len = xmlStrlen((const xmlChar *)str);
397 if ((len > 0) && (str[len - 1] != '\n'))
398 channel(data, "%s\n", str);
399 else
400 channel(data, "%s", str);
401 } else {
402 channel(data, "%s\n", "out of memory error");
403 }
404
405 if (ctxt != NULL) {
406 xmlParserPrintFileContextInternal(input, channel, data);
407 if (cur != NULL) {
408 if (cur->filename)
409 channel(data, "%s:%d: \n", cur->filename, cur->line);
410 else if ((line != 0) && (domain == XML_FROM_PARSER))
411 channel(data, "Entity: line %d: \n", cur->line);
412 xmlParserPrintFileContextInternal(cur, channel, data);
413 }
414 }
415 if ((domain == XML_FROM_XPATH) && (err->str1 != NULL) &&
416 (err->int1 < 100) &&
417 (err->int1 < xmlStrlen((const xmlChar *)err->str1))) {
418 xmlChar buf[150];
419 int i;
420
421 channel(data, "%s\n", err->str1);
422 for (i=0;i < err->int1;i++)
423 buf[i] = ' ';
424 buf[i++] = '^';
425 buf[i] = 0;
426 channel(data, "%s\n", buf);
427 }
428 }
429
430 /**
431 * __xmlRaiseError:
432 * @schannel: the structured callback channel
433 * @channel: the old callback channel
434 * @data: the callback data
435 * @ctx: the parser context or NULL
436 * @ctx: the parser context or NULL
437 * @domain: the domain for the error
438 * @code: the code for the error
439 * @level: the xmlErrorLevel for the error
440 * @file: the file source of the error (or NULL)
441 * @line: the line of the error or 0 if N/A
442 * @str1: extra string info
443 * @str2: extra string info
444 * @str3: extra string info
445 * @int1: extra int info
446 * @col: column number of the error or 0 if N/A
447 * @msg: the message to display/transmit
448 * @...: extra parameters for the message display
449 *
450 * Update the appropriate global or contextual error structure,
451 * then forward the error message down the parser or generic
452 * error callback handler
453 */
454 void XMLCDECL
__xmlRaiseError(xmlStructuredErrorFunc schannel,xmlGenericErrorFunc channel,void * data,void * ctx,void * nod,int domain,int code,xmlErrorLevel level,const char * file,int line,const char * str1,const char * str2,const char * str3,int int1,int col,const char * msg,...)455 __xmlRaiseError(xmlStructuredErrorFunc schannel,
456 xmlGenericErrorFunc channel, void *data, void *ctx,
457 void *nod, int domain, int code, xmlErrorLevel level,
458 const char *file, int line, const char *str1,
459 const char *str2, const char *str3, int int1, int col,
460 const char *msg, ...)
461 {
462 xmlParserCtxtPtr ctxt = NULL;
463 xmlNodePtr node = (xmlNodePtr) nod;
464 char *str = NULL;
465 xmlParserInputPtr input = NULL;
466 xmlErrorPtr to = &xmlLastError;
467 xmlNodePtr baseptr = NULL;
468
469 if (code == XML_ERR_OK)
470 return;
471 if ((xmlGetWarningsDefaultValue == 0) && (level == XML_ERR_WARNING))
472 return;
473 if ((domain == XML_FROM_PARSER) || (domain == XML_FROM_HTML) ||
474 (domain == XML_FROM_DTD) || (domain == XML_FROM_NAMESPACE) ||
475 (domain == XML_FROM_IO) || (domain == XML_FROM_VALID)) {
476 ctxt = (xmlParserCtxtPtr) ctx;
477 if ((schannel == NULL) && (ctxt != NULL) && (ctxt->sax != NULL) &&
478 (ctxt->sax->initialized == XML_SAX2_MAGIC) &&
479 (ctxt->sax->serror != NULL)) {
480 schannel = ctxt->sax->serror;
481 data = ctxt->userData;
482 }
483 }
484 /*
485 * Check if structured error handler set
486 */
487 if (schannel == NULL) {
488 schannel = xmlStructuredError;
489 /*
490 * if user has defined handler, change data ptr to user's choice
491 */
492 if (schannel != NULL)
493 data = xmlStructuredErrorContext;
494 }
495 /*
496 * Formatting the message
497 */
498 if (msg == NULL) {
499 str = (char *) xmlStrdup(BAD_CAST "No error message provided");
500 } else {
501 XML_GET_VAR_STR(msg, str);
502 }
503
504 /*
505 * specific processing if a parser context is provided
506 */
507 if (ctxt != NULL) {
508 if (file == NULL) {
509 input = ctxt->input;
510 if ((input != NULL) && (input->filename == NULL) &&
511 (ctxt->inputNr > 1)) {
512 input = ctxt->inputTab[ctxt->inputNr - 2];
513 }
514 if (input != NULL) {
515 file = input->filename;
516 line = input->line;
517 col = input->col;
518 }
519 }
520 to = &ctxt->lastError;
521 } else if ((node != NULL) && (file == NULL)) {
522 int i;
523
524 if ((node->doc != NULL) && (node->doc->URL != NULL)) {
525 baseptr = node;
526 /* file = (const char *) node->doc->URL; */
527 }
528 for (i = 0;
529 ((i < 10) && (node != NULL) && (node->type != XML_ELEMENT_NODE));
530 i++)
531 node = node->parent;
532 if ((baseptr == NULL) && (node != NULL) &&
533 (node->doc != NULL) && (node->doc->URL != NULL))
534 baseptr = node;
535
536 if ((node != NULL) && (node->type == XML_ELEMENT_NODE))
537 line = node->line;
538 if ((line == 0) || (line == 65535))
539 line = xmlGetLineNo(node);
540 }
541
542 /*
543 * Save the information about the error
544 */
545 xmlResetError(to);
546 to->domain = domain;
547 to->code = code;
548 to->message = str;
549 to->level = level;
550 if (file != NULL)
551 to->file = (char *) xmlStrdup((const xmlChar *) file);
552 else if (baseptr != NULL) {
553 #ifdef LIBXML_XINCLUDE_ENABLED
554 /*
555 * We check if the error is within an XInclude section and,
556 * if so, attempt to print out the href of the XInclude instead
557 * of the usual "base" (doc->URL) for the node (bug 152623).
558 */
559 xmlNodePtr prev = baseptr;
560 int inclcount = 0;
561 while (prev != NULL) {
562 if (prev->prev == NULL)
563 prev = prev->parent;
564 else {
565 prev = prev->prev;
566 if (prev->type == XML_XINCLUDE_START) {
567 if (--inclcount < 0)
568 break;
569 } else if (prev->type == XML_XINCLUDE_END)
570 inclcount++;
571 }
572 }
573 if (prev != NULL) {
574 if (prev->type == XML_XINCLUDE_START) {
575 prev->type = XML_ELEMENT_NODE;
576 to->file = (char *) xmlGetProp(prev, BAD_CAST "href");
577 prev->type = XML_XINCLUDE_START;
578 } else {
579 to->file = (char *) xmlGetProp(prev, BAD_CAST "href");
580 }
581 } else
582 #endif
583 to->file = (char *) xmlStrdup(baseptr->doc->URL);
584 if ((to->file == NULL) && (node != NULL) && (node->doc != NULL)) {
585 to->file = (char *) xmlStrdup(node->doc->URL);
586 }
587 }
588 to->line = line;
589 if (str1 != NULL)
590 to->str1 = (char *) xmlStrdup((const xmlChar *) str1);
591 if (str2 != NULL)
592 to->str2 = (char *) xmlStrdup((const xmlChar *) str2);
593 if (str3 != NULL)
594 to->str3 = (char *) xmlStrdup((const xmlChar *) str3);
595 to->int1 = int1;
596 to->int2 = col;
597 to->node = node;
598 to->ctxt = ctx;
599
600 if (to != &xmlLastError)
601 xmlCopyError(to,&xmlLastError);
602
603 if (schannel != NULL) {
604 schannel(data, to);
605 return;
606 }
607
608 /*
609 * Find the callback channel if channel param is NULL
610 */
611 if ((ctxt != NULL) && (channel == NULL) &&
612 (xmlStructuredError == NULL) && (ctxt->sax != NULL)) {
613 if (level == XML_ERR_WARNING)
614 channel = ctxt->sax->warning;
615 else
616 channel = ctxt->sax->error;
617 data = ctxt->userData;
618 } else if (channel == NULL) {
619 channel = xmlGenericError;
620 if (ctxt != NULL) {
621 data = ctxt;
622 } else {
623 data = xmlGenericErrorContext;
624 }
625 }
626 if (channel == NULL)
627 return;
628
629 if ((channel == xmlParserError) ||
630 (channel == xmlParserWarning) ||
631 (channel == xmlParserValidityError) ||
632 (channel == xmlParserValidityWarning))
633 xmlReportError(to, ctxt, str, NULL, NULL);
634 else if ((channel == (xmlGenericErrorFunc) fprintf) ||
635 (channel == xmlGenericErrorDefaultFunc))
636 xmlReportError(to, ctxt, str, channel, data);
637 else
638 channel(data, "%s", str);
639 }
640
641 /**
642 * __xmlSimpleError:
643 * @domain: where the error comes from
644 * @code: the error code
645 * @node: the context node
646 * @extra: extra informations
647 *
648 * Handle an out of memory condition
649 */
650 void
__xmlSimpleError(int domain,int code,xmlNodePtr node,const char * msg,const char * extra)651 __xmlSimpleError(int domain, int code, xmlNodePtr node,
652 const char *msg, const char *extra)
653 {
654
655 if (code == XML_ERR_NO_MEMORY) {
656 if (extra)
657 __xmlRaiseError(NULL, NULL, NULL, NULL, node, domain,
658 XML_ERR_NO_MEMORY, XML_ERR_FATAL, NULL, 0, extra,
659 NULL, NULL, 0, 0,
660 "Memory allocation failed : %s\n", extra);
661 else
662 __xmlRaiseError(NULL, NULL, NULL, NULL, node, domain,
663 XML_ERR_NO_MEMORY, XML_ERR_FATAL, NULL, 0, NULL,
664 NULL, NULL, 0, 0, "Memory allocation failed\n");
665 } else {
666 __xmlRaiseError(NULL, NULL, NULL, NULL, node, domain,
667 code, XML_ERR_ERROR, NULL, 0, extra,
668 NULL, NULL, 0, 0, msg, extra);
669 }
670 }
671 /**
672 * xmlParserError:
673 * @ctx: an XML parser context
674 * @msg: the message to display/transmit
675 * @...: extra parameters for the message display
676 *
677 * Display and format an error messages, gives file, line, position and
678 * extra parameters.
679 */
680 void XMLCDECL
xmlParserError(void * ctx,const char * msg,...)681 xmlParserError(void *ctx, const char *msg, ...)
682 {
683 xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx;
684 xmlParserInputPtr input = NULL;
685 xmlParserInputPtr cur = NULL;
686 char * str;
687
688 if (ctxt != NULL) {
689 input = ctxt->input;
690 if ((input != NULL) && (input->filename == NULL) &&
691 (ctxt->inputNr > 1)) {
692 cur = input;
693 input = ctxt->inputTab[ctxt->inputNr - 2];
694 }
695 xmlParserPrintFileInfo(input);
696 }
697
698 xmlGenericError(xmlGenericErrorContext, "error: ");
699 XML_GET_VAR_STR(msg, str);
700 xmlGenericError(xmlGenericErrorContext, "%s", str);
701 if (str != NULL)
702 xmlFree(str);
703
704 if (ctxt != NULL) {
705 xmlParserPrintFileContext(input);
706 if (cur != NULL) {
707 xmlParserPrintFileInfo(cur);
708 xmlGenericError(xmlGenericErrorContext, "\n");
709 xmlParserPrintFileContext(cur);
710 }
711 }
712 }
713
714 /**
715 * xmlParserWarning:
716 * @ctx: an XML parser context
717 * @msg: the message to display/transmit
718 * @...: extra parameters for the message display
719 *
720 * Display and format a warning messages, gives file, line, position and
721 * extra parameters.
722 */
723 void XMLCDECL
xmlParserWarning(void * ctx,const char * msg,...)724 xmlParserWarning(void *ctx, const char *msg, ...)
725 {
726 xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx;
727 xmlParserInputPtr input = NULL;
728 xmlParserInputPtr cur = NULL;
729 char * str;
730
731 if (ctxt != NULL) {
732 input = ctxt->input;
733 if ((input != NULL) && (input->filename == NULL) &&
734 (ctxt->inputNr > 1)) {
735 cur = input;
736 input = ctxt->inputTab[ctxt->inputNr - 2];
737 }
738 xmlParserPrintFileInfo(input);
739 }
740
741 xmlGenericError(xmlGenericErrorContext, "warning: ");
742 XML_GET_VAR_STR(msg, str);
743 xmlGenericError(xmlGenericErrorContext, "%s", str);
744 if (str != NULL)
745 xmlFree(str);
746
747 if (ctxt != NULL) {
748 xmlParserPrintFileContext(input);
749 if (cur != NULL) {
750 xmlParserPrintFileInfo(cur);
751 xmlGenericError(xmlGenericErrorContext, "\n");
752 xmlParserPrintFileContext(cur);
753 }
754 }
755 }
756
757 /************************************************************************
758 * *
759 * Handling of validation errors *
760 * *
761 ************************************************************************/
762
763 /**
764 * xmlParserValidityError:
765 * @ctx: an XML parser context
766 * @msg: the message to display/transmit
767 * @...: extra parameters for the message display
768 *
769 * Display and format an validity error messages, gives file,
770 * line, position and extra parameters.
771 */
772 void XMLCDECL
xmlParserValidityError(void * ctx,const char * msg,...)773 xmlParserValidityError(void *ctx, const char *msg, ...)
774 {
775 xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx;
776 xmlParserInputPtr input = NULL;
777 char * str;
778 int len = xmlStrlen((const xmlChar *) msg);
779 static int had_info = 0;
780
781 if ((len > 1) && (msg[len - 2] != ':')) {
782 if (ctxt != NULL) {
783 input = ctxt->input;
784 if ((input->filename == NULL) && (ctxt->inputNr > 1))
785 input = ctxt->inputTab[ctxt->inputNr - 2];
786
787 if (had_info == 0) {
788 xmlParserPrintFileInfo(input);
789 }
790 }
791 xmlGenericError(xmlGenericErrorContext, "validity error: ");
792 had_info = 0;
793 } else {
794 had_info = 1;
795 }
796
797 XML_GET_VAR_STR(msg, str);
798 xmlGenericError(xmlGenericErrorContext, "%s", str);
799 if (str != NULL)
800 xmlFree(str);
801
802 if ((ctxt != NULL) && (input != NULL)) {
803 xmlParserPrintFileContext(input);
804 }
805 }
806
807 /**
808 * xmlParserValidityWarning:
809 * @ctx: an XML parser context
810 * @msg: the message to display/transmit
811 * @...: extra parameters for the message display
812 *
813 * Display and format a validity warning messages, gives file, line,
814 * position and extra parameters.
815 */
816 void XMLCDECL
xmlParserValidityWarning(void * ctx,const char * msg,...)817 xmlParserValidityWarning(void *ctx, const char *msg, ...)
818 {
819 xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx;
820 xmlParserInputPtr input = NULL;
821 char * str;
822 int len = xmlStrlen((const xmlChar *) msg);
823
824 if ((ctxt != NULL) && (len != 0) && (msg[len - 1] != ':')) {
825 input = ctxt->input;
826 if ((input->filename == NULL) && (ctxt->inputNr > 1))
827 input = ctxt->inputTab[ctxt->inputNr - 2];
828
829 xmlParserPrintFileInfo(input);
830 }
831
832 xmlGenericError(xmlGenericErrorContext, "validity warning: ");
833 XML_GET_VAR_STR(msg, str);
834 xmlGenericError(xmlGenericErrorContext, "%s", str);
835 if (str != NULL)
836 xmlFree(str);
837
838 if (ctxt != NULL) {
839 xmlParserPrintFileContext(input);
840 }
841 }
842
843
844 /************************************************************************
845 * *
846 * Extended Error Handling *
847 * *
848 ************************************************************************/
849
850 /**
851 * xmlGetLastError:
852 *
853 * Get the last global error registered. This is per thread if compiled
854 * with thread support.
855 *
856 * Returns NULL if no error occured or a pointer to the error
857 */
858 xmlErrorPtr
xmlGetLastError(void)859 xmlGetLastError(void)
860 {
861 if (xmlLastError.code == XML_ERR_OK)
862 return (NULL);
863 return (&xmlLastError);
864 }
865
866 /**
867 * xmlResetError:
868 * @err: pointer to the error.
869 *
870 * Cleanup the error.
871 */
872 void
xmlResetError(xmlErrorPtr err)873 xmlResetError(xmlErrorPtr err)
874 {
875 if (err == NULL)
876 return;
877 if (err->code == XML_ERR_OK)
878 return;
879 if (err->message != NULL)
880 xmlFree(err->message);
881 if (err->file != NULL)
882 xmlFree(err->file);
883 if (err->str1 != NULL)
884 xmlFree(err->str1);
885 if (err->str2 != NULL)
886 xmlFree(err->str2);
887 if (err->str3 != NULL)
888 xmlFree(err->str3);
889 memset(err, 0, sizeof(xmlError));
890 err->code = XML_ERR_OK;
891 }
892
893 /**
894 * xmlResetLastError:
895 *
896 * Cleanup the last global error registered. For parsing error
897 * this does not change the well-formedness result.
898 */
899 void
xmlResetLastError(void)900 xmlResetLastError(void)
901 {
902 if (xmlLastError.code == XML_ERR_OK)
903 return;
904 xmlResetError(&xmlLastError);
905 }
906
907 /**
908 * xmlCtxtGetLastError:
909 * @ctx: an XML parser context
910 *
911 * Get the last parsing error registered.
912 *
913 * Returns NULL if no error occured or a pointer to the error
914 */
915 xmlErrorPtr
xmlCtxtGetLastError(void * ctx)916 xmlCtxtGetLastError(void *ctx)
917 {
918 xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx;
919
920 if (ctxt == NULL)
921 return (NULL);
922 if (ctxt->lastError.code == XML_ERR_OK)
923 return (NULL);
924 return (&ctxt->lastError);
925 }
926
927 /**
928 * xmlCtxtResetLastError:
929 * @ctx: an XML parser context
930 *
931 * Cleanup the last global error registered. For parsing error
932 * this does not change the well-formedness result.
933 */
934 void
xmlCtxtResetLastError(void * ctx)935 xmlCtxtResetLastError(void *ctx)
936 {
937 xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx;
938
939 if (ctxt == NULL)
940 return;
941 ctxt->errNo = XML_ERR_OK;
942 if (ctxt->lastError.code == XML_ERR_OK)
943 return;
944 xmlResetError(&ctxt->lastError);
945 }
946
947 /**
948 * xmlCopyError:
949 * @from: a source error
950 * @to: a target error
951 *
952 * Save the original error to the new place.
953 *
954 * Returns 0 in case of success and -1 in case of error.
955 */
956 int
xmlCopyError(xmlErrorPtr from,xmlErrorPtr to)957 xmlCopyError(xmlErrorPtr from, xmlErrorPtr to) {
958 char *message, *file, *str1, *str2, *str3;
959
960 if ((from == NULL) || (to == NULL))
961 return(-1);
962
963 message = (char *) xmlStrdup((xmlChar *) from->message);
964 file = (char *) xmlStrdup ((xmlChar *) from->file);
965 str1 = (char *) xmlStrdup ((xmlChar *) from->str1);
966 str2 = (char *) xmlStrdup ((xmlChar *) from->str2);
967 str3 = (char *) xmlStrdup ((xmlChar *) from->str3);
968
969 if (to->message != NULL)
970 xmlFree(to->message);
971 if (to->file != NULL)
972 xmlFree(to->file);
973 if (to->str1 != NULL)
974 xmlFree(to->str1);
975 if (to->str2 != NULL)
976 xmlFree(to->str2);
977 if (to->str3 != NULL)
978 xmlFree(to->str3);
979 to->domain = from->domain;
980 to->code = from->code;
981 to->level = from->level;
982 to->line = from->line;
983 to->node = from->node;
984 to->int1 = from->int1;
985 to->int2 = from->int2;
986 to->node = from->node;
987 to->ctxt = from->ctxt;
988 to->message = message;
989 to->file = file;
990 to->str1 = str1;
991 to->str2 = str2;
992 to->str3 = str3;
993
994 return 0;
995 }
996
997 #define bottom_error
998 #include "elfgcchack.h"
999