Mercurial > ~mikael > mcabber > hg
comparison mcabber/libjabber/xmlparse.h @ 25:bf3d6e241714
[/trunk] Changeset 41 by mikael
* Add libjabber to trunk. Let the game begin! :-)
author | mikael |
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date | Sun, 27 Mar 2005 20:18:21 +0000 |
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1 /* | |
2 The contents of this file are subject to the Mozilla Public License | |
3 Version 1.1 (the "License"); you may not use this file except in | |
4 compliance with the License. You may obtain a copy of the License at | |
5 http://www.mozilla.org/MPL/ | |
6 | |
7 Software distributed under the License is distributed on an "AS IS" | |
8 basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the | |
9 License for the specific language governing rights and limitations | |
10 under the License. | |
11 | |
12 The Original Code is expat. | |
13 | |
14 The Initial Developer of the Original Code is James Clark. | |
15 Portions created by James Clark are Copyright (C) 1998, 1999 | |
16 James Clark. All Rights Reserved. | |
17 | |
18 Contributor(s): | |
19 | |
20 Alternatively, the contents of this file may be used under the terms | |
21 of the GNU General Public License (the "GPL"), in which case the | |
22 provisions of the GPL are applicable instead of those above. If you | |
23 wish to allow use of your version of this file only under the terms of | |
24 the GPL and not to allow others to use your version of this file under | |
25 the MPL, indicate your decision by deleting the provisions above and | |
26 replace them with the notice and other provisions required by the | |
27 GPL. If you do not delete the provisions above, a recipient may use | |
28 your version of this file under either the MPL or the GPL. | |
29 */ | |
30 | |
31 #ifndef XmlParse_INCLUDED | |
32 #define XmlParse_INCLUDED 1 | |
33 | |
34 #ifdef __cplusplus | |
35 extern "C" { | |
36 #endif | |
37 | |
38 #ifndef XMLPARSEAPI | |
39 #define XMLPARSEAPI /* as nothing */ | |
40 #endif | |
41 | |
42 typedef void *XML_Parser; | |
43 | |
44 #ifdef XML_UNICODE_WCHAR_T | |
45 | |
46 /* XML_UNICODE_WCHAR_T will work only if sizeof(wchar_t) == 2 and wchar_t | |
47 uses Unicode. */ | |
48 /* Information is UTF-16 encoded as wchar_ts */ | |
49 | |
50 #ifndef XML_UNICODE | |
51 #define XML_UNICODE | |
52 #endif | |
53 | |
54 #include <stddef.h> | |
55 typedef wchar_t XML_Char; | |
56 typedef wchar_t XML_LChar; | |
57 | |
58 #else /* not XML_UNICODE_WCHAR_T */ | |
59 | |
60 #ifdef XML_UNICODE | |
61 | |
62 /* Information is UTF-16 encoded as unsigned shorts */ | |
63 typedef unsigned short XML_Char; | |
64 typedef char XML_LChar; | |
65 | |
66 #else /* not XML_UNICODE */ | |
67 | |
68 /* Information is UTF-8 encoded. */ | |
69 typedef char XML_Char; | |
70 typedef char XML_LChar; | |
71 | |
72 #endif /* not XML_UNICODE */ | |
73 | |
74 #endif /* not XML_UNICODE_WCHAR_T */ | |
75 | |
76 | |
77 /* Constructs a new parser; encoding is the encoding specified by the external | |
78 protocol or null if there is none specified. */ | |
79 | |
80 XML_Parser XMLPARSEAPI | |
81 XML_ParserCreate(const XML_Char *encoding); | |
82 | |
83 /* Constructs a new parser and namespace processor. Element type names | |
84 and attribute names that belong to a namespace will be expanded; | |
85 unprefixed attribute names are never expanded; unprefixed element type | |
86 names are expanded only if there is a default namespace. The expanded | |
87 name is the concatenation of the namespace URI, the namespace separator character, | |
88 and the local part of the name. If the namespace separator is '\0' then | |
89 the namespace URI and the local part will be concatenated without any | |
90 separator. When a namespace is not declared, the name and prefix will be | |
91 passed through without expansion. */ | |
92 | |
93 XML_Parser XMLPARSEAPI | |
94 XML_ParserCreateNS(const XML_Char *encoding, XML_Char namespaceSeparator); | |
95 | |
96 | |
97 /* atts is array of name/value pairs, terminated by 0; | |
98 names and values are 0 terminated. */ | |
99 | |
100 typedef void (*XML_StartElementHandler)(void *userData, | |
101 const XML_Char *name, | |
102 const XML_Char **atts); | |
103 | |
104 typedef void (*XML_EndElementHandler)(void *userData, | |
105 const XML_Char *name); | |
106 | |
107 /* s is not 0 terminated. */ | |
108 typedef void (*XML_CharacterDataHandler)(void *userData, | |
109 const XML_Char *s, | |
110 int len); | |
111 | |
112 /* target and data are 0 terminated */ | |
113 typedef void (*XML_ProcessingInstructionHandler)(void *userData, | |
114 const XML_Char *target, | |
115 const XML_Char *data); | |
116 | |
117 /* data is 0 terminated */ | |
118 typedef void (*XML_CommentHandler)(void *userData, const XML_Char *data); | |
119 | |
120 typedef void (*XML_StartCdataSectionHandler)(void *userData); | |
121 typedef void (*XML_EndCdataSectionHandler)(void *userData); | |
122 | |
123 /* This is called for any characters in the XML document for | |
124 which there is no applicable handler. This includes both | |
125 characters that are part of markup which is of a kind that is | |
126 not reported (comments, markup declarations), or characters | |
127 that are part of a construct which could be reported but | |
128 for which no handler has been supplied. The characters are passed | |
129 exactly as they were in the XML document except that | |
130 they will be encoded in UTF-8. Line boundaries are not normalized. | |
131 Note that a byte order mark character is not passed to the default handler. | |
132 There are no guarantees about how characters are divided between calls | |
133 to the default handler: for example, a comment might be split between | |
134 multiple calls. */ | |
135 | |
136 typedef void (*XML_DefaultHandler)(void *userData, | |
137 const XML_Char *s, | |
138 int len); | |
139 | |
140 /* This is called for a declaration of an unparsed (NDATA) | |
141 entity. The base argument is whatever was set by XML_SetBase. | |
142 The entityName, systemId and notationName arguments will never be null. | |
143 The other arguments may be. */ | |
144 | |
145 typedef void (*XML_UnparsedEntityDeclHandler)(void *userData, | |
146 const XML_Char *entityName, | |
147 const XML_Char *base, | |
148 const XML_Char *systemId, | |
149 const XML_Char *publicId, | |
150 const XML_Char *notationName); | |
151 | |
152 /* This is called for a declaration of notation. | |
153 The base argument is whatever was set by XML_SetBase. | |
154 The notationName will never be null. The other arguments can be. */ | |
155 | |
156 typedef void (*XML_NotationDeclHandler)(void *userData, | |
157 const XML_Char *notationName, | |
158 const XML_Char *base, | |
159 const XML_Char *systemId, | |
160 const XML_Char *publicId); | |
161 | |
162 /* When namespace processing is enabled, these are called once for | |
163 each namespace declaration. The call to the start and end element | |
164 handlers occur between the calls to the start and end namespace | |
165 declaration handlers. For an xmlns attribute, prefix will be null. | |
166 For an xmlns="" attribute, uri will be null. */ | |
167 | |
168 typedef void (*XML_StartNamespaceDeclHandler)(void *userData, | |
169 const XML_Char *prefix, | |
170 const XML_Char *uri); | |
171 | |
172 typedef void (*XML_EndNamespaceDeclHandler)(void *userData, | |
173 const XML_Char *prefix); | |
174 | |
175 /* This is called if the document is not standalone (it has an | |
176 external subset or a reference to a parameter entity, but does not | |
177 have standalone="yes"). If this handler returns 0, then processing | |
178 will not continue, and the parser will return a | |
179 XML_ERROR_NOT_STANDALONE error. */ | |
180 | |
181 typedef int (*XML_NotStandaloneHandler)(void *userData); | |
182 | |
183 /* This is called for a reference to an external parsed general entity. | |
184 The referenced entity is not automatically parsed. | |
185 The application can parse it immediately or later using | |
186 XML_ExternalEntityParserCreate. | |
187 The parser argument is the parser parsing the entity containing the reference; | |
188 it can be passed as the parser argument to XML_ExternalEntityParserCreate. | |
189 The systemId argument is the system identifier as specified in the entity declaration; | |
190 it will not be null. | |
191 The base argument is the system identifier that should be used as the base for | |
192 resolving systemId if systemId was relative; this is set by XML_SetBase; | |
193 it may be null. | |
194 The publicId argument is the public identifier as specified in the entity declaration, | |
195 or null if none was specified; the whitespace in the public identifier | |
196 will have been normalized as required by the XML spec. | |
197 The context argument specifies the parsing context in the format | |
198 expected by the context argument to | |
199 XML_ExternalEntityParserCreate; context is valid only until the handler | |
200 returns, so if the referenced entity is to be parsed later, it must be copied. | |
201 The handler should return 0 if processing should not continue because of | |
202 a fatal error in the handling of the external entity. | |
203 In this case the calling parser will return an XML_ERROR_EXTERNAL_ENTITY_HANDLING | |
204 error. | |
205 Note that unlike other handlers the first argument is the parser, not userData. */ | |
206 | |
207 typedef int (*XML_ExternalEntityRefHandler)(XML_Parser parser, | |
208 const XML_Char *context, | |
209 const XML_Char *base, | |
210 const XML_Char *systemId, | |
211 const XML_Char *publicId); | |
212 | |
213 /* This structure is filled in by the XML_UnknownEncodingHandler | |
214 to provide information to the parser about encodings that are unknown | |
215 to the parser. | |
216 The map[b] member gives information about byte sequences | |
217 whose first byte is b. | |
218 If map[b] is c where c is >= 0, then b by itself encodes the Unicode scalar value c. | |
219 If map[b] is -1, then the byte sequence is malformed. | |
220 If map[b] is -n, where n >= 2, then b is the first byte of an n-byte | |
221 sequence that encodes a single Unicode scalar value. | |
222 The data member will be passed as the first argument to the convert function. | |
223 The convert function is used to convert multibyte sequences; | |
224 s will point to a n-byte sequence where map[(unsigned char)*s] == -n. | |
225 The convert function must return the Unicode scalar value | |
226 represented by this byte sequence or -1 if the byte sequence is malformed. | |
227 The convert function may be null if the encoding is a single-byte encoding, | |
228 that is if map[b] >= -1 for all bytes b. | |
229 When the parser is finished with the encoding, then if release is not null, | |
230 it will call release passing it the data member; | |
231 once release has been called, the convert function will not be called again. | |
232 | |
233 Expat places certain restrictions on the encodings that are supported | |
234 using this mechanism. | |
235 | |
236 1. Every ASCII character that can appear in a well-formed XML document, | |
237 other than the characters | |
238 | |
239 $@\^`{}~ | |
240 | |
241 must be represented by a single byte, and that byte must be the | |
242 same byte that represents that character in ASCII. | |
243 | |
244 2. No character may require more than 4 bytes to encode. | |
245 | |
246 3. All characters encoded must have Unicode scalar values <= 0xFFFF, | |
247 (ie characters that would be encoded by surrogates in UTF-16 | |
248 are not allowed). Note that this restriction doesn't apply to | |
249 the built-in support for UTF-8 and UTF-16. | |
250 | |
251 4. No Unicode character may be encoded by more than one distinct sequence | |
252 of bytes. */ | |
253 | |
254 typedef struct { | |
255 int map[256]; | |
256 void *data; | |
257 int (*convert)(void *data, const char *s); | |
258 void (*release)(void *data); | |
259 } XML_Encoding; | |
260 | |
261 /* This is called for an encoding that is unknown to the parser. | |
262 The encodingHandlerData argument is that which was passed as the | |
263 second argument to XML_SetUnknownEncodingHandler. | |
264 The name argument gives the name of the encoding as specified in | |
265 the encoding declaration. | |
266 If the callback can provide information about the encoding, | |
267 it must fill in the XML_Encoding structure, and return 1. | |
268 Otherwise it must return 0. | |
269 If info does not describe a suitable encoding, | |
270 then the parser will return an XML_UNKNOWN_ENCODING error. */ | |
271 | |
272 typedef int (*XML_UnknownEncodingHandler)(void *encodingHandlerData, | |
273 const XML_Char *name, | |
274 XML_Encoding *info); | |
275 | |
276 void XMLPARSEAPI | |
277 XML_SetElementHandler(XML_Parser parser, | |
278 XML_StartElementHandler start, | |
279 XML_EndElementHandler end); | |
280 | |
281 void XMLPARSEAPI | |
282 XML_SetCharacterDataHandler(XML_Parser parser, | |
283 XML_CharacterDataHandler handler); | |
284 | |
285 void XMLPARSEAPI | |
286 XML_SetProcessingInstructionHandler(XML_Parser parser, | |
287 XML_ProcessingInstructionHandler handler); | |
288 void XMLPARSEAPI | |
289 XML_SetCommentHandler(XML_Parser parser, | |
290 XML_CommentHandler handler); | |
291 | |
292 void XMLPARSEAPI | |
293 XML_SetCdataSectionHandler(XML_Parser parser, | |
294 XML_StartCdataSectionHandler start, | |
295 XML_EndCdataSectionHandler end); | |
296 | |
297 /* This sets the default handler and also inhibits expansion of internal entities. | |
298 The entity reference will be passed to the default handler. */ | |
299 | |
300 void XMLPARSEAPI | |
301 XML_SetDefaultHandler(XML_Parser parser, | |
302 XML_DefaultHandler handler); | |
303 | |
304 /* This sets the default handler but does not inhibit expansion of internal entities. | |
305 The entity reference will not be passed to the default handler. */ | |
306 | |
307 void XMLPARSEAPI | |
308 XML_SetDefaultHandlerExpand(XML_Parser parser, | |
309 XML_DefaultHandler handler); | |
310 | |
311 void XMLPARSEAPI | |
312 XML_SetUnparsedEntityDeclHandler(XML_Parser parser, | |
313 XML_UnparsedEntityDeclHandler handler); | |
314 | |
315 void XMLPARSEAPI | |
316 XML_SetNotationDeclHandler(XML_Parser parser, | |
317 XML_NotationDeclHandler handler); | |
318 | |
319 void XMLPARSEAPI | |
320 XML_SetNamespaceDeclHandler(XML_Parser parser, | |
321 XML_StartNamespaceDeclHandler start, | |
322 XML_EndNamespaceDeclHandler end); | |
323 | |
324 void XMLPARSEAPI | |
325 XML_SetNotStandaloneHandler(XML_Parser parser, | |
326 XML_NotStandaloneHandler handler); | |
327 | |
328 void XMLPARSEAPI | |
329 XML_SetExternalEntityRefHandler(XML_Parser parser, | |
330 XML_ExternalEntityRefHandler handler); | |
331 | |
332 /* If a non-null value for arg is specified here, then it will be passed | |
333 as the first argument to the external entity ref handler instead | |
334 of the parser object. */ | |
335 void XMLPARSEAPI | |
336 XML_SetExternalEntityRefHandlerArg(XML_Parser, void *arg); | |
337 | |
338 void XMLPARSEAPI | |
339 XML_SetUnknownEncodingHandler(XML_Parser parser, | |
340 XML_UnknownEncodingHandler handler, | |
341 void *encodingHandlerData); | |
342 | |
343 /* This can be called within a handler for a start element, end element, | |
344 processing instruction or character data. It causes the corresponding | |
345 markup to be passed to the default handler. */ | |
346 void XMLPARSEAPI XML_DefaultCurrent(XML_Parser parser); | |
347 | |
348 /* This value is passed as the userData argument to callbacks. */ | |
349 void XMLPARSEAPI | |
350 XML_SetUserData(XML_Parser parser, void *userData); | |
351 | |
352 /* Returns the last value set by XML_SetUserData or null. */ | |
353 #define XML_GetUserData(parser) (*(void **)(parser)) | |
354 | |
355 /* This is equivalent to supplying an encoding argument | |
356 to XML_CreateParser. It must not be called after XML_Parse | |
357 or XML_ParseBuffer. */ | |
358 | |
359 int XMLPARSEAPI | |
360 XML_SetEncoding(XML_Parser parser, const XML_Char *encoding); | |
361 | |
362 /* If this function is called, then the parser will be passed | |
363 as the first argument to callbacks instead of userData. | |
364 The userData will still be accessible using XML_GetUserData. */ | |
365 | |
366 void XMLPARSEAPI | |
367 XML_UseParserAsHandlerArg(XML_Parser parser); | |
368 | |
369 /* Sets the base to be used for resolving relative URIs in system identifiers in | |
370 declarations. Resolving relative identifiers is left to the application: | |
371 this value will be passed through as the base argument to the | |
372 XML_ExternalEntityRefHandler, XML_NotationDeclHandler | |
373 and XML_UnparsedEntityDeclHandler. The base argument will be copied. | |
374 Returns zero if out of memory, non-zero otherwise. */ | |
375 | |
376 int XMLPARSEAPI | |
377 XML_SetBase(XML_Parser parser, const XML_Char *base); | |
378 | |
379 const XML_Char XMLPARSEAPI * | |
380 XML_GetBase(XML_Parser parser); | |
381 | |
382 /* Returns the number of the attributes passed in last call to the | |
383 XML_StartElementHandler that were specified in the start-tag rather | |
384 than defaulted. */ | |
385 | |
386 int XMLPARSEAPI XML_GetSpecifiedAttributeCount(XML_Parser parser); | |
387 | |
388 /* Parses some input. Returns 0 if a fatal error is detected. | |
389 The last call to XML_Parse must have isFinal true; | |
390 len may be zero for this call (or any other). */ | |
391 int XMLPARSEAPI | |
392 XML_Parse(XML_Parser parser, const char *s, int len, int isFinal); | |
393 | |
394 void XMLPARSEAPI * | |
395 XML_GetBuffer(XML_Parser parser, int len); | |
396 | |
397 int XMLPARSEAPI | |
398 XML_ParseBuffer(XML_Parser parser, int len, int isFinal); | |
399 | |
400 /* Creates an XML_Parser object that can parse an external general entity; | |
401 context is a '\0'-terminated string specifying the parse context; | |
402 encoding is a '\0'-terminated string giving the name of the externally specified encoding, | |
403 or null if there is no externally specified encoding. | |
404 The context string consists of a sequence of tokens separated by formfeeds (\f); | |
405 a token consisting of a name specifies that the general entity of the name | |
406 is open; a token of the form prefix=uri specifies the namespace for a particular | |
407 prefix; a token of the form =uri specifies the default namespace. | |
408 This can be called at any point after the first call to an ExternalEntityRefHandler | |
409 so longer as the parser has not yet been freed. | |
410 The new parser is completely independent and may safely be used in a separate thread. | |
411 The handlers and userData are initialized from the parser argument. | |
412 Returns 0 if out of memory. Otherwise returns a new XML_Parser object. */ | |
413 XML_Parser XMLPARSEAPI | |
414 XML_ExternalEntityParserCreate(XML_Parser parser, | |
415 const XML_Char *context, | |
416 const XML_Char *encoding); | |
417 | |
418 enum XML_Error { | |
419 XML_ERROR_NONE, | |
420 XML_ERROR_NO_MEMORY, | |
421 XML_ERROR_SYNTAX, | |
422 XML_ERROR_NO_ELEMENTS, | |
423 XML_ERROR_INVALID_TOKEN, | |
424 XML_ERROR_UNCLOSED_TOKEN, | |
425 XML_ERROR_PARTIAL_CHAR, | |
426 XML_ERROR_TAG_MISMATCH, | |
427 XML_ERROR_DUPLICATE_ATTRIBUTE, | |
428 XML_ERROR_JUNK_AFTER_DOC_ELEMENT, | |
429 XML_ERROR_PARAM_ENTITY_REF, | |
430 XML_ERROR_UNDEFINED_ENTITY, | |
431 XML_ERROR_RECURSIVE_ENTITY_REF, | |
432 XML_ERROR_ASYNC_ENTITY, | |
433 XML_ERROR_BAD_CHAR_REF, | |
434 XML_ERROR_BINARY_ENTITY_REF, | |
435 XML_ERROR_ATTRIBUTE_EXTERNAL_ENTITY_REF, | |
436 XML_ERROR_MISPLACED_XML_PI, | |
437 XML_ERROR_UNKNOWN_ENCODING, | |
438 XML_ERROR_INCORRECT_ENCODING, | |
439 XML_ERROR_UNCLOSED_CDATA_SECTION, | |
440 XML_ERROR_EXTERNAL_ENTITY_HANDLING, | |
441 XML_ERROR_NOT_STANDALONE | |
442 }; | |
443 | |
444 /* If XML_Parse or XML_ParseBuffer have returned 0, then XML_GetErrorCode | |
445 returns information about the error. */ | |
446 | |
447 enum XML_Error XMLPARSEAPI XML_GetErrorCode(XML_Parser parser); | |
448 | |
449 /* These functions return information about the current parse location. | |
450 They may be called when XML_Parse or XML_ParseBuffer return 0; | |
451 in this case the location is the location of the character at which | |
452 the error was detected. | |
453 They may also be called from any other callback called to report | |
454 some parse event; in this the location is the location of the first | |
455 of the sequence of characters that generated the event. */ | |
456 | |
457 int XMLPARSEAPI XML_GetCurrentLineNumber(XML_Parser parser); | |
458 int XMLPARSEAPI XML_GetCurrentColumnNumber(XML_Parser parser); | |
459 long XMLPARSEAPI XML_GetCurrentByteIndex(XML_Parser parser); | |
460 | |
461 /* Return the number of bytes in the current event. | |
462 Returns 0 if the event is in an internal entity. */ | |
463 | |
464 int XMLPARSEAPI XML_GetCurrentByteCount(XML_Parser parser); | |
465 | |
466 /* For backwards compatibility with previous versions. */ | |
467 #define XML_GetErrorLineNumber XML_GetCurrentLineNumber | |
468 #define XML_GetErrorColumnNumber XML_GetCurrentColumnNumber | |
469 #define XML_GetErrorByteIndex XML_GetCurrentByteIndex | |
470 | |
471 /* Frees memory used by the parser. */ | |
472 void XMLPARSEAPI | |
473 XML_ParserFree(XML_Parser parser); | |
474 | |
475 /* Returns a string describing the error. */ | |
476 const XML_LChar XMLPARSEAPI *XML_ErrorString(int code); | |
477 | |
478 #ifdef __cplusplus | |
479 } | |
480 #endif | |
481 | |
482 #endif /* not XmlParse_INCLUDED */ |