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0001 /* 0002 __ __ _ 0003 ___\ \/ /_ __ __ _| |_ 0004 / _ \\ /| '_ \ / _` | __| 0005 | __// \| |_) | (_| | |_ 0006 \___/_/\_\ .__/ \__,_|\__| 0007 |_| XML parser 0008 0009 Copyright (c) 1997-2000 Thai Open Source Software Center Ltd 0010 Copyright (c) 2000 Clark Cooper <coopercc@users.sourceforge.net> 0011 Copyright (c) 2000-2005 Fred L. Drake, Jr. <fdrake@users.sourceforge.net> 0012 Copyright (c) 2001-2002 Greg Stein <gstein@users.sourceforge.net> 0013 Copyright (c) 2002-2016 Karl Waclawek <karl@waclawek.net> 0014 Copyright (c) 2016-2022 Sebastian Pipping <sebastian@pipping.org> 0015 Copyright (c) 2016 Cristian RodrÃguez <crrodriguez@opensuse.org> 0016 Copyright (c) 2016 Thomas Beutlich <tc@tbeu.de> 0017 Copyright (c) 2017 Rhodri James <rhodri@wildebeest.org.uk> 0018 Copyright (c) 2022 Thijs Schreijer <thijs@thijsschreijer.nl> 0019 Licensed under the MIT license: 0020 0021 Permission is hereby granted, free of charge, to any person obtaining 0022 a copy of this software and associated documentation files (the 0023 "Software"), to deal in the Software without restriction, including 0024 without limitation the rights to use, copy, modify, merge, publish, 0025 distribute, sublicense, and/or sell copies of the Software, and to permit 0026 persons to whom the Software is furnished to do so, subject to the 0027 following conditions: 0028 0029 The above copyright notice and this permission notice shall be included 0030 in all copies or substantial portions of the Software. 0031 0032 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 0033 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 0034 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN 0035 NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 0036 DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 0037 OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 0038 USE OR OTHER DEALINGS IN THE SOFTWARE. 0039 */ 0040 0041 #ifndef Expat_INCLUDED 0042 #define Expat_INCLUDED 1 0043 0044 #include <stdlib.h> 0045 #include "expat_external.h" 0046 0047 #ifdef __cplusplus 0048 extern "C" { 0049 #endif 0050 0051 struct XML_ParserStruct; 0052 typedef struct XML_ParserStruct *XML_Parser; 0053 0054 typedef unsigned char XML_Bool; 0055 #define XML_TRUE ((XML_Bool)1) 0056 #define XML_FALSE ((XML_Bool)0) 0057 0058 /* The XML_Status enum gives the possible return values for several 0059 API functions. The preprocessor #defines are included so this 0060 stanza can be added to code that still needs to support older 0061 versions of Expat 1.95.x: 0062 0063 #ifndef XML_STATUS_OK 0064 #define XML_STATUS_OK 1 0065 #define XML_STATUS_ERROR 0 0066 #endif 0067 0068 Otherwise, the #define hackery is quite ugly and would have been 0069 dropped. 0070 */ 0071 enum XML_Status { 0072 XML_STATUS_ERROR = 0, 0073 #define XML_STATUS_ERROR XML_STATUS_ERROR 0074 XML_STATUS_OK = 1, 0075 #define XML_STATUS_OK XML_STATUS_OK 0076 XML_STATUS_SUSPENDED = 2 0077 #define XML_STATUS_SUSPENDED XML_STATUS_SUSPENDED 0078 }; 0079 0080 enum XML_Error { 0081 XML_ERROR_NONE, 0082 XML_ERROR_NO_MEMORY, 0083 XML_ERROR_SYNTAX, 0084 XML_ERROR_NO_ELEMENTS, 0085 XML_ERROR_INVALID_TOKEN, 0086 XML_ERROR_UNCLOSED_TOKEN, 0087 XML_ERROR_PARTIAL_CHAR, 0088 XML_ERROR_TAG_MISMATCH, 0089 XML_ERROR_DUPLICATE_ATTRIBUTE, 0090 XML_ERROR_JUNK_AFTER_DOC_ELEMENT, 0091 XML_ERROR_PARAM_ENTITY_REF, 0092 XML_ERROR_UNDEFINED_ENTITY, 0093 XML_ERROR_RECURSIVE_ENTITY_REF, 0094 XML_ERROR_ASYNC_ENTITY, 0095 XML_ERROR_BAD_CHAR_REF, 0096 XML_ERROR_BINARY_ENTITY_REF, 0097 XML_ERROR_ATTRIBUTE_EXTERNAL_ENTITY_REF, 0098 XML_ERROR_MISPLACED_XML_PI, 0099 XML_ERROR_UNKNOWN_ENCODING, 0100 XML_ERROR_INCORRECT_ENCODING, 0101 XML_ERROR_UNCLOSED_CDATA_SECTION, 0102 XML_ERROR_EXTERNAL_ENTITY_HANDLING, 0103 XML_ERROR_NOT_STANDALONE, 0104 XML_ERROR_UNEXPECTED_STATE, 0105 XML_ERROR_ENTITY_DECLARED_IN_PE, 0106 XML_ERROR_FEATURE_REQUIRES_XML_DTD, 0107 XML_ERROR_CANT_CHANGE_FEATURE_ONCE_PARSING, 0108 /* Added in 1.95.7. */ 0109 XML_ERROR_UNBOUND_PREFIX, 0110 /* Added in 1.95.8. */ 0111 XML_ERROR_UNDECLARING_PREFIX, 0112 XML_ERROR_INCOMPLETE_PE, 0113 XML_ERROR_XML_DECL, 0114 XML_ERROR_TEXT_DECL, 0115 XML_ERROR_PUBLICID, 0116 XML_ERROR_SUSPENDED, 0117 XML_ERROR_NOT_SUSPENDED, 0118 XML_ERROR_ABORTED, 0119 XML_ERROR_FINISHED, 0120 XML_ERROR_SUSPEND_PE, 0121 /* Added in 2.0. */ 0122 XML_ERROR_RESERVED_PREFIX_XML, 0123 XML_ERROR_RESERVED_PREFIX_XMLNS, 0124 XML_ERROR_RESERVED_NAMESPACE_URI, 0125 /* Added in 2.2.1. */ 0126 XML_ERROR_INVALID_ARGUMENT, 0127 /* Added in 2.3.0. */ 0128 XML_ERROR_NO_BUFFER, 0129 /* Added in 2.4.0. */ 0130 XML_ERROR_AMPLIFICATION_LIMIT_BREACH 0131 }; 0132 0133 enum XML_Content_Type { 0134 XML_CTYPE_EMPTY = 1, 0135 XML_CTYPE_ANY, 0136 XML_CTYPE_MIXED, 0137 XML_CTYPE_NAME, 0138 XML_CTYPE_CHOICE, 0139 XML_CTYPE_SEQ 0140 }; 0141 0142 enum XML_Content_Quant { 0143 XML_CQUANT_NONE, 0144 XML_CQUANT_OPT, 0145 XML_CQUANT_REP, 0146 XML_CQUANT_PLUS 0147 }; 0148 0149 /* If type == XML_CTYPE_EMPTY or XML_CTYPE_ANY, then quant will be 0150 XML_CQUANT_NONE, and the other fields will be zero or NULL. 0151 If type == XML_CTYPE_MIXED, then quant will be NONE or REP and 0152 numchildren will contain number of elements that may be mixed in 0153 and children point to an array of XML_Content cells that will be 0154 all of XML_CTYPE_NAME type with no quantification. 0155 0156 If type == XML_CTYPE_NAME, then the name points to the name, and 0157 the numchildren field will be zero and children will be NULL. The 0158 quant fields indicates any quantifiers placed on the name. 0159 0160 CHOICE and SEQ will have name NULL, the number of children in 0161 numchildren and children will point, recursively, to an array 0162 of XML_Content cells. 0163 0164 The EMPTY, ANY, and MIXED types will only occur at top level. 0165 */ 0166 0167 typedef struct XML_cp XML_Content; 0168 0169 struct XML_cp { 0170 enum XML_Content_Type type; 0171 enum XML_Content_Quant quant; 0172 XML_Char *name; 0173 unsigned int numchildren; 0174 XML_Content *children; 0175 }; 0176 0177 /* This is called for an element declaration. See above for 0178 description of the model argument. It's the user code's responsibility 0179 to free model when finished with it. See XML_FreeContentModel. 0180 There is no need to free the model from the handler, it can be kept 0181 around and freed at a later stage. 0182 */ 0183 typedef void(XMLCALL *XML_ElementDeclHandler)(void *userData, 0184 const XML_Char *name, 0185 XML_Content *model); 0186 0187 XMLPARSEAPI(void) 0188 XML_SetElementDeclHandler(XML_Parser parser, XML_ElementDeclHandler eldecl); 0189 0190 /* The Attlist declaration handler is called for *each* attribute. So 0191 a single Attlist declaration with multiple attributes declared will 0192 generate multiple calls to this handler. The "default" parameter 0193 may be NULL in the case of the "#IMPLIED" or "#REQUIRED" 0194 keyword. The "isrequired" parameter will be true and the default 0195 value will be NULL in the case of "#REQUIRED". If "isrequired" is 0196 true and default is non-NULL, then this is a "#FIXED" default. 0197 */ 0198 typedef void(XMLCALL *XML_AttlistDeclHandler)( 0199 void *userData, const XML_Char *elname, const XML_Char *attname, 0200 const XML_Char *att_type, const XML_Char *dflt, int isrequired); 0201 0202 XMLPARSEAPI(void) 0203 XML_SetAttlistDeclHandler(XML_Parser parser, XML_AttlistDeclHandler attdecl); 0204 0205 /* The XML declaration handler is called for *both* XML declarations 0206 and text declarations. The way to distinguish is that the version 0207 parameter will be NULL for text declarations. The encoding 0208 parameter may be NULL for XML declarations. The standalone 0209 parameter will be -1, 0, or 1 indicating respectively that there 0210 was no standalone parameter in the declaration, that it was given 0211 as no, or that it was given as yes. 0212 */ 0213 typedef void(XMLCALL *XML_XmlDeclHandler)(void *userData, 0214 const XML_Char *version, 0215 const XML_Char *encoding, 0216 int standalone); 0217 0218 XMLPARSEAPI(void) 0219 XML_SetXmlDeclHandler(XML_Parser parser, XML_XmlDeclHandler xmldecl); 0220 0221 typedef struct { 0222 void *(*malloc_fcn)(size_t size); 0223 void *(*realloc_fcn)(void *ptr, size_t size); 0224 void (*free_fcn)(void *ptr); 0225 } XML_Memory_Handling_Suite; 0226 0227 /* Constructs a new parser; encoding is the encoding specified by the 0228 external protocol or NULL if there is none specified. 0229 */ 0230 XMLPARSEAPI(XML_Parser) 0231 XML_ParserCreate(const XML_Char *encoding); 0232 0233 /* Constructs a new parser and namespace processor. Element type 0234 names and attribute names that belong to a namespace will be 0235 expanded; unprefixed attribute names are never expanded; unprefixed 0236 element type names are expanded only if there is a default 0237 namespace. The expanded name is the concatenation of the namespace 0238 URI, the namespace separator character, and the local part of the 0239 name. If the namespace separator is '\0' then the namespace URI 0240 and the local part will be concatenated without any separator. 0241 It is a programming error to use the separator '\0' with namespace 0242 triplets (see XML_SetReturnNSTriplet). 0243 If a namespace separator is chosen that can be part of a URI or 0244 part of an XML name, splitting an expanded name back into its 0245 1, 2 or 3 original parts on application level in the element handler 0246 may end up vulnerable, so these are advised against; sane choices for 0247 a namespace separator are e.g. '\n' (line feed) and '|' (pipe). 0248 0249 Note that Expat does not validate namespace URIs (beyond encoding) 0250 against RFC 3986 today (and is not required to do so with regard to 0251 the XML 1.0 namespaces specification) but it may start doing that 0252 in future releases. Before that, an application using Expat must 0253 be ready to receive namespace URIs containing non-URI characters. 0254 */ 0255 XMLPARSEAPI(XML_Parser) 0256 XML_ParserCreateNS(const XML_Char *encoding, XML_Char namespaceSeparator); 0257 0258 /* Constructs a new parser using the memory management suite referred to 0259 by memsuite. If memsuite is NULL, then use the standard library memory 0260 suite. If namespaceSeparator is non-NULL it creates a parser with 0261 namespace processing as described above. The character pointed at 0262 will serve as the namespace separator. 0263 0264 All further memory operations used for the created parser will come from 0265 the given suite. 0266 */ 0267 XMLPARSEAPI(XML_Parser) 0268 XML_ParserCreate_MM(const XML_Char *encoding, 0269 const XML_Memory_Handling_Suite *memsuite, 0270 const XML_Char *namespaceSeparator); 0271 0272 /* Prepare a parser object to be re-used. This is particularly 0273 valuable when memory allocation overhead is disproportionately high, 0274 such as when a large number of small documnents need to be parsed. 0275 All handlers are cleared from the parser, except for the 0276 unknownEncodingHandler. The parser's external state is re-initialized 0277 except for the values of ns and ns_triplets. 0278 0279 Added in Expat 1.95.3. 0280 */ 0281 XMLPARSEAPI(XML_Bool) 0282 XML_ParserReset(XML_Parser parser, const XML_Char *encoding); 0283 0284 /* atts is array of name/value pairs, terminated by 0; 0285 names and values are 0 terminated. 0286 */ 0287 typedef void(XMLCALL *XML_StartElementHandler)(void *userData, 0288 const XML_Char *name, 0289 const XML_Char **atts); 0290 0291 typedef void(XMLCALL *XML_EndElementHandler)(void *userData, 0292 const XML_Char *name); 0293 0294 /* s is not 0 terminated. */ 0295 typedef void(XMLCALL *XML_CharacterDataHandler)(void *userData, 0296 const XML_Char *s, int len); 0297 0298 /* target and data are 0 terminated */ 0299 typedef void(XMLCALL *XML_ProcessingInstructionHandler)(void *userData, 0300 const XML_Char *target, 0301 const XML_Char *data); 0302 0303 /* data is 0 terminated */ 0304 typedef void(XMLCALL *XML_CommentHandler)(void *userData, const XML_Char *data); 0305 0306 typedef void(XMLCALL *XML_StartCdataSectionHandler)(void *userData); 0307 typedef void(XMLCALL *XML_EndCdataSectionHandler)(void *userData); 0308 0309 /* This is called for any characters in the XML document for which 0310 there is no applicable handler. This includes both characters that 0311 are part of markup which is of a kind that is not reported 0312 (comments, markup declarations), or characters that are part of a 0313 construct which could be reported but for which no handler has been 0314 supplied. The characters are passed exactly as they were in the XML 0315 document except that they will be encoded in UTF-8 or UTF-16. 0316 Line boundaries are not normalized. Note that a byte order mark 0317 character is not passed to the default handler. There are no 0318 guarantees about how characters are divided between calls to the 0319 default handler: for example, a comment might be split between 0320 multiple calls. 0321 */ 0322 typedef void(XMLCALL *XML_DefaultHandler)(void *userData, const XML_Char *s, 0323 int len); 0324 0325 /* This is called for the start of the DOCTYPE declaration, before 0326 any DTD or internal subset is parsed. 0327 */ 0328 typedef void(XMLCALL *XML_StartDoctypeDeclHandler)(void *userData, 0329 const XML_Char *doctypeName, 0330 const XML_Char *sysid, 0331 const XML_Char *pubid, 0332 int has_internal_subset); 0333 0334 /* This is called for the end of the DOCTYPE declaration when the 0335 closing > is encountered, but after processing any external 0336 subset. 0337 */ 0338 typedef void(XMLCALL *XML_EndDoctypeDeclHandler)(void *userData); 0339 0340 /* This is called for entity declarations. The is_parameter_entity 0341 argument will be non-zero if the entity is a parameter entity, zero 0342 otherwise. 0343 0344 For internal entities (<!ENTITY foo "bar">), value will 0345 be non-NULL and systemId, publicID, and notationName will be NULL. 0346 The value string is NOT null-terminated; the length is provided in 0347 the value_length argument. Since it is legal to have zero-length 0348 values, do not use this argument to test for internal entities. 0349 0350 For external entities, value will be NULL and systemId will be 0351 non-NULL. The publicId argument will be NULL unless a public 0352 identifier was provided. The notationName argument will have a 0353 non-NULL value only for unparsed entity declarations. 0354 0355 Note that is_parameter_entity can't be changed to XML_Bool, since 0356 that would break binary compatibility. 0357 */ 0358 typedef void(XMLCALL *XML_EntityDeclHandler)( 0359 void *userData, const XML_Char *entityName, int is_parameter_entity, 0360 const XML_Char *value, int value_length, const XML_Char *base, 0361 const XML_Char *systemId, const XML_Char *publicId, 0362 const XML_Char *notationName); 0363 0364 XMLPARSEAPI(void) 0365 XML_SetEntityDeclHandler(XML_Parser parser, XML_EntityDeclHandler handler); 0366 0367 /* OBSOLETE -- OBSOLETE -- OBSOLETE 0368 This handler has been superseded by the EntityDeclHandler above. 0369 It is provided here for backward compatibility. 0370 0371 This is called for a declaration of an unparsed (NDATA) entity. 0372 The base argument is whatever was set by XML_SetBase. The 0373 entityName, systemId and notationName arguments will never be 0374 NULL. The other arguments may be. 0375 */ 0376 typedef void(XMLCALL *XML_UnparsedEntityDeclHandler)( 0377 void *userData, const XML_Char *entityName, const XML_Char *base, 0378 const XML_Char *systemId, const XML_Char *publicId, 0379 const XML_Char *notationName); 0380 0381 /* This is called for a declaration of notation. The base argument is 0382 whatever was set by XML_SetBase. The notationName will never be 0383 NULL. The other arguments can be. 0384 */ 0385 typedef void(XMLCALL *XML_NotationDeclHandler)(void *userData, 0386 const XML_Char *notationName, 0387 const XML_Char *base, 0388 const XML_Char *systemId, 0389 const XML_Char *publicId); 0390 0391 /* When namespace processing is enabled, these are called once for 0392 each namespace declaration. The call to the start and end element 0393 handlers occur between the calls to the start and end namespace 0394 declaration handlers. For an xmlns attribute, prefix will be 0395 NULL. For an xmlns="" attribute, uri will be NULL. 0396 */ 0397 typedef void(XMLCALL *XML_StartNamespaceDeclHandler)(void *userData, 0398 const XML_Char *prefix, 0399 const XML_Char *uri); 0400 0401 typedef void(XMLCALL *XML_EndNamespaceDeclHandler)(void *userData, 0402 const XML_Char *prefix); 0403 0404 /* This is called if the document is not standalone, that is, it has an 0405 external subset or a reference to a parameter entity, but does not 0406 have standalone="yes". If this handler returns XML_STATUS_ERROR, 0407 then processing will not continue, and the parser will return a 0408 XML_ERROR_NOT_STANDALONE error. 0409 If parameter entity parsing is enabled, then in addition to the 0410 conditions above this handler will only be called if the referenced 0411 entity was actually read. 0412 */ 0413 typedef int(XMLCALL *XML_NotStandaloneHandler)(void *userData); 0414 0415 /* This is called for a reference to an external parsed general 0416 entity. The referenced entity is not automatically parsed. The 0417 application can parse it immediately or later using 0418 XML_ExternalEntityParserCreate. 0419 0420 The parser argument is the parser parsing the entity containing the 0421 reference; it can be passed as the parser argument to 0422 XML_ExternalEntityParserCreate. The systemId argument is the 0423 system identifier as specified in the entity declaration; it will 0424 not be NULL. 0425 0426 The base argument is the system identifier that should be used as 0427 the base for resolving systemId if systemId was relative; this is 0428 set by XML_SetBase; it may be NULL. 0429 0430 The publicId argument is the public identifier as specified in the 0431 entity declaration, or NULL if none was specified; the whitespace 0432 in the public identifier will have been normalized as required by 0433 the XML spec. 0434 0435 The context argument specifies the parsing context in the format 0436 expected by the context argument to XML_ExternalEntityParserCreate; 0437 context is valid only until the handler returns, so if the 0438 referenced entity is to be parsed later, it must be copied. 0439 context is NULL only when the entity is a parameter entity. 0440 0441 The handler should return XML_STATUS_ERROR if processing should not 0442 continue because of a fatal error in the handling of the external 0443 entity. In this case the calling parser will return an 0444 XML_ERROR_EXTERNAL_ENTITY_HANDLING error. 0445 0446 Note that unlike other handlers the first argument is the parser, 0447 not userData. 0448 */ 0449 typedef int(XMLCALL *XML_ExternalEntityRefHandler)(XML_Parser parser, 0450 const XML_Char *context, 0451 const XML_Char *base, 0452 const XML_Char *systemId, 0453 const XML_Char *publicId); 0454 0455 /* This is called in two situations: 0456 1) An entity reference is encountered for which no declaration 0457 has been read *and* this is not an error. 0458 2) An internal entity reference is read, but not expanded, because 0459 XML_SetDefaultHandler has been called. 0460 Note: skipped parameter entities in declarations and skipped general 0461 entities in attribute values cannot be reported, because 0462 the event would be out of sync with the reporting of the 0463 declarations or attribute values 0464 */ 0465 typedef void(XMLCALL *XML_SkippedEntityHandler)(void *userData, 0466 const XML_Char *entityName, 0467 int is_parameter_entity); 0468 0469 /* This structure is filled in by the XML_UnknownEncodingHandler to 0470 provide information to the parser about encodings that are unknown 0471 to the parser. 0472 0473 The map[b] member gives information about byte sequences whose 0474 first byte is b. 0475 0476 If map[b] is c where c is >= 0, then b by itself encodes the 0477 Unicode scalar value c. 0478 0479 If map[b] is -1, then the byte sequence is malformed. 0480 0481 If map[b] is -n, where n >= 2, then b is the first byte of an 0482 n-byte sequence that encodes a single Unicode scalar value. 0483 0484 The data member will be passed as the first argument to the convert 0485 function. 0486 0487 The convert function is used to convert multibyte sequences; s will 0488 point to a n-byte sequence where map[(unsigned char)*s] == -n. The 0489 convert function must return the Unicode scalar value represented 0490 by this byte sequence or -1 if the byte sequence is malformed. 0491 0492 The convert function may be NULL if the encoding is a single-byte 0493 encoding, that is if map[b] >= -1 for all bytes b. 0494 0495 When the parser is finished with the encoding, then if release is 0496 not NULL, it will call release passing it the data member; once 0497 release has been called, the convert function will not be called 0498 again. 0499 0500 Expat places certain restrictions on the encodings that are supported 0501 using this mechanism. 0502 0503 1. Every ASCII character that can appear in a well-formed XML document, 0504 other than the characters 0505 0506 $@\^`{}~ 0507 0508 must be represented by a single byte, and that byte must be the 0509 same byte that represents that character in ASCII. 0510 0511 2. No character may require more than 4 bytes to encode. 0512 0513 3. All characters encoded must have Unicode scalar values <= 0514 0xFFFF, (i.e., characters that would be encoded by surrogates in 0515 UTF-16 are not allowed). Note that this restriction doesn't 0516 apply to the built-in support for UTF-8 and UTF-16. 0517 0518 4. No Unicode character may be encoded by more than one distinct 0519 sequence of bytes. 0520 */ 0521 typedef struct { 0522 int map[256]; 0523 void *data; 0524 int(XMLCALL *convert)(void *data, const char *s); 0525 void(XMLCALL *release)(void *data); 0526 } XML_Encoding; 0527 0528 /* This is called for an encoding that is unknown to the parser. 0529 0530 The encodingHandlerData argument is that which was passed as the 0531 second argument to XML_SetUnknownEncodingHandler. 0532 0533 The name argument gives the name of the encoding as specified in 0534 the encoding declaration. 0535 0536 If the callback can provide information about the encoding, it must 0537 fill in the XML_Encoding structure, and return XML_STATUS_OK. 0538 Otherwise it must return XML_STATUS_ERROR. 0539 0540 If info does not describe a suitable encoding, then the parser will 0541 return an XML_ERROR_UNKNOWN_ENCODING error. 0542 */ 0543 typedef int(XMLCALL *XML_UnknownEncodingHandler)(void *encodingHandlerData, 0544 const XML_Char *name, 0545 XML_Encoding *info); 0546 0547 XMLPARSEAPI(void) 0548 XML_SetElementHandler(XML_Parser parser, XML_StartElementHandler start, 0549 XML_EndElementHandler end); 0550 0551 XMLPARSEAPI(void) 0552 XML_SetStartElementHandler(XML_Parser parser, XML_StartElementHandler handler); 0553 0554 XMLPARSEAPI(void) 0555 XML_SetEndElementHandler(XML_Parser parser, XML_EndElementHandler handler); 0556 0557 XMLPARSEAPI(void) 0558 XML_SetCharacterDataHandler(XML_Parser parser, 0559 XML_CharacterDataHandler handler); 0560 0561 XMLPARSEAPI(void) 0562 XML_SetProcessingInstructionHandler(XML_Parser parser, 0563 XML_ProcessingInstructionHandler handler); 0564 XMLPARSEAPI(void) 0565 XML_SetCommentHandler(XML_Parser parser, XML_CommentHandler handler); 0566 0567 XMLPARSEAPI(void) 0568 XML_SetCdataSectionHandler(XML_Parser parser, 0569 XML_StartCdataSectionHandler start, 0570 XML_EndCdataSectionHandler end); 0571 0572 XMLPARSEAPI(void) 0573 XML_SetStartCdataSectionHandler(XML_Parser parser, 0574 XML_StartCdataSectionHandler start); 0575 0576 XMLPARSEAPI(void) 0577 XML_SetEndCdataSectionHandler(XML_Parser parser, 0578 XML_EndCdataSectionHandler end); 0579 0580 /* This sets the default handler and also inhibits expansion of 0581 internal entities. These entity references will be passed to the 0582 default handler, or to the skipped entity handler, if one is set. 0583 */ 0584 XMLPARSEAPI(void) 0585 XML_SetDefaultHandler(XML_Parser parser, XML_DefaultHandler handler); 0586 0587 /* This sets the default handler but does not inhibit expansion of 0588 internal entities. The entity reference will not be passed to the 0589 default handler. 0590 */ 0591 XMLPARSEAPI(void) 0592 XML_SetDefaultHandlerExpand(XML_Parser parser, XML_DefaultHandler handler); 0593 0594 XMLPARSEAPI(void) 0595 XML_SetDoctypeDeclHandler(XML_Parser parser, XML_StartDoctypeDeclHandler start, 0596 XML_EndDoctypeDeclHandler end); 0597 0598 XMLPARSEAPI(void) 0599 XML_SetStartDoctypeDeclHandler(XML_Parser parser, 0600 XML_StartDoctypeDeclHandler start); 0601 0602 XMLPARSEAPI(void) 0603 XML_SetEndDoctypeDeclHandler(XML_Parser parser, XML_EndDoctypeDeclHandler end); 0604 0605 XMLPARSEAPI(void) 0606 XML_SetUnparsedEntityDeclHandler(XML_Parser parser, 0607 XML_UnparsedEntityDeclHandler handler); 0608 0609 XMLPARSEAPI(void) 0610 XML_SetNotationDeclHandler(XML_Parser parser, XML_NotationDeclHandler handler); 0611 0612 XMLPARSEAPI(void) 0613 XML_SetNamespaceDeclHandler(XML_Parser parser, 0614 XML_StartNamespaceDeclHandler start, 0615 XML_EndNamespaceDeclHandler end); 0616 0617 XMLPARSEAPI(void) 0618 XML_SetStartNamespaceDeclHandler(XML_Parser parser, 0619 XML_StartNamespaceDeclHandler start); 0620 0621 XMLPARSEAPI(void) 0622 XML_SetEndNamespaceDeclHandler(XML_Parser parser, 0623 XML_EndNamespaceDeclHandler end); 0624 0625 XMLPARSEAPI(void) 0626 XML_SetNotStandaloneHandler(XML_Parser parser, 0627 XML_NotStandaloneHandler handler); 0628 0629 XMLPARSEAPI(void) 0630 XML_SetExternalEntityRefHandler(XML_Parser parser, 0631 XML_ExternalEntityRefHandler handler); 0632 0633 /* If a non-NULL value for arg is specified here, then it will be 0634 passed as the first argument to the external entity ref handler 0635 instead of the parser object. 0636 */ 0637 XMLPARSEAPI(void) 0638 XML_SetExternalEntityRefHandlerArg(XML_Parser parser, void *arg); 0639 0640 XMLPARSEAPI(void) 0641 XML_SetSkippedEntityHandler(XML_Parser parser, 0642 XML_SkippedEntityHandler handler); 0643 0644 XMLPARSEAPI(void) 0645 XML_SetUnknownEncodingHandler(XML_Parser parser, 0646 XML_UnknownEncodingHandler handler, 0647 void *encodingHandlerData); 0648 0649 /* This can be called within a handler for a start element, end 0650 element, processing instruction or character data. It causes the 0651 corresponding markup to be passed to the default handler. 0652 */ 0653 XMLPARSEAPI(void) 0654 XML_DefaultCurrent(XML_Parser parser); 0655 0656 /* If do_nst is non-zero, and namespace processing is in effect, and 0657 a name has a prefix (i.e. an explicit namespace qualifier) then 0658 that name is returned as a triplet in a single string separated by 0659 the separator character specified when the parser was created: URI 0660 + sep + local_name + sep + prefix. 0661 0662 If do_nst is zero, then namespace information is returned in the 0663 default manner (URI + sep + local_name) whether or not the name 0664 has a prefix. 0665 0666 Note: Calling XML_SetReturnNSTriplet after XML_Parse or 0667 XML_ParseBuffer has no effect. 0668 */ 0669 0670 XMLPARSEAPI(void) 0671 XML_SetReturnNSTriplet(XML_Parser parser, int do_nst); 0672 0673 /* This value is passed as the userData argument to callbacks. */ 0674 XMLPARSEAPI(void) 0675 XML_SetUserData(XML_Parser parser, void *userData); 0676 0677 /* Returns the last value set by XML_SetUserData or NULL. */ 0678 #define XML_GetUserData(parser) (*(void **)(parser)) 0679 0680 /* This is equivalent to supplying an encoding argument to 0681 XML_ParserCreate. On success XML_SetEncoding returns non-zero, 0682 zero otherwise. 0683 Note: Calling XML_SetEncoding after XML_Parse or XML_ParseBuffer 0684 has no effect and returns XML_STATUS_ERROR. 0685 */ 0686 XMLPARSEAPI(enum XML_Status) 0687 XML_SetEncoding(XML_Parser parser, const XML_Char *encoding); 0688 0689 /* If this function is called, then the parser will be passed as the 0690 first argument to callbacks instead of userData. The userData will 0691 still be accessible using XML_GetUserData. 0692 */ 0693 XMLPARSEAPI(void) 0694 XML_UseParserAsHandlerArg(XML_Parser parser); 0695 0696 /* If useDTD == XML_TRUE is passed to this function, then the parser 0697 will assume that there is an external subset, even if none is 0698 specified in the document. In such a case the parser will call the 0699 externalEntityRefHandler with a value of NULL for the systemId 0700 argument (the publicId and context arguments will be NULL as well). 0701 Note: For the purpose of checking WFC: Entity Declared, passing 0702 useDTD == XML_TRUE will make the parser behave as if the document 0703 had a DTD with an external subset. 0704 Note: If this function is called, then this must be done before 0705 the first call to XML_Parse or XML_ParseBuffer, since it will 0706 have no effect after that. Returns 0707 XML_ERROR_CANT_CHANGE_FEATURE_ONCE_PARSING. 0708 Note: If the document does not have a DOCTYPE declaration at all, 0709 then startDoctypeDeclHandler and endDoctypeDeclHandler will not 0710 be called, despite an external subset being parsed. 0711 Note: If XML_DTD is not defined when Expat is compiled, returns 0712 XML_ERROR_FEATURE_REQUIRES_XML_DTD. 0713 Note: If parser == NULL, returns XML_ERROR_INVALID_ARGUMENT. 0714 */ 0715 XMLPARSEAPI(enum XML_Error) 0716 XML_UseForeignDTD(XML_Parser parser, XML_Bool useDTD); 0717 0718 /* Sets the base to be used for resolving relative URIs in system 0719 identifiers in declarations. Resolving relative identifiers is 0720 left to the application: this value will be passed through as the 0721 base argument to the XML_ExternalEntityRefHandler, 0722 XML_NotationDeclHandler and XML_UnparsedEntityDeclHandler. The base 0723 argument will be copied. Returns XML_STATUS_ERROR if out of memory, 0724 XML_STATUS_OK otherwise. 0725 */ 0726 XMLPARSEAPI(enum XML_Status) 0727 XML_SetBase(XML_Parser parser, const XML_Char *base); 0728 0729 XMLPARSEAPI(const XML_Char *) 0730 XML_GetBase(XML_Parser parser); 0731 0732 /* Returns the number of the attribute/value pairs passed in last call 0733 to the XML_StartElementHandler that were specified in the start-tag 0734 rather than defaulted. Each attribute/value pair counts as 2; thus 0735 this corresponds to an index into the atts array passed to the 0736 XML_StartElementHandler. Returns -1 if parser == NULL. 0737 */ 0738 XMLPARSEAPI(int) 0739 XML_GetSpecifiedAttributeCount(XML_Parser parser); 0740 0741 /* Returns the index of the ID attribute passed in the last call to 0742 XML_StartElementHandler, or -1 if there is no ID attribute or 0743 parser == NULL. Each attribute/value pair counts as 2; thus this 0744 corresponds to an index into the atts array passed to the 0745 XML_StartElementHandler. 0746 */ 0747 XMLPARSEAPI(int) 0748 XML_GetIdAttributeIndex(XML_Parser parser); 0749 0750 #ifdef XML_ATTR_INFO 0751 /* Source file byte offsets for the start and end of attribute names and values. 0752 The value indices are exclusive of surrounding quotes; thus in a UTF-8 source 0753 file an attribute value of "blah" will yield: 0754 info->valueEnd - info->valueStart = 4 bytes. 0755 */ 0756 typedef struct { 0757 XML_Index nameStart; /* Offset to beginning of the attribute name. */ 0758 XML_Index nameEnd; /* Offset after the attribute name's last byte. */ 0759 XML_Index valueStart; /* Offset to beginning of the attribute value. */ 0760 XML_Index valueEnd; /* Offset after the attribute value's last byte. */ 0761 } XML_AttrInfo; 0762 0763 /* Returns an array of XML_AttrInfo structures for the attribute/value pairs 0764 passed in last call to the XML_StartElementHandler that were specified 0765 in the start-tag rather than defaulted. Each attribute/value pair counts 0766 as 1; thus the number of entries in the array is 0767 XML_GetSpecifiedAttributeCount(parser) / 2. 0768 */ 0769 XMLPARSEAPI(const XML_AttrInfo *) 0770 XML_GetAttributeInfo(XML_Parser parser); 0771 #endif 0772 0773 /* Parses some input. Returns XML_STATUS_ERROR if a fatal error is 0774 detected. The last call to XML_Parse must have isFinal true; len 0775 may be zero for this call (or any other). 0776 0777 Though the return values for these functions has always been 0778 described as a Boolean value, the implementation, at least for the 0779 1.95.x series, has always returned exactly one of the XML_Status 0780 values. 0781 */ 0782 XMLPARSEAPI(enum XML_Status) 0783 XML_Parse(XML_Parser parser, const char *s, int len, int isFinal); 0784 0785 XMLPARSEAPI(void *) 0786 XML_GetBuffer(XML_Parser parser, int len); 0787 0788 XMLPARSEAPI(enum XML_Status) 0789 XML_ParseBuffer(XML_Parser parser, int len, int isFinal); 0790 0791 /* Stops parsing, causing XML_Parse() or XML_ParseBuffer() to return. 0792 Must be called from within a call-back handler, except when aborting 0793 (resumable = 0) an already suspended parser. Some call-backs may 0794 still follow because they would otherwise get lost. Examples: 0795 - endElementHandler() for empty elements when stopped in 0796 startElementHandler(), 0797 - endNameSpaceDeclHandler() when stopped in endElementHandler(), 0798 and possibly others. 0799 0800 Can be called from most handlers, including DTD related call-backs, 0801 except when parsing an external parameter entity and resumable != 0. 0802 Returns XML_STATUS_OK when successful, XML_STATUS_ERROR otherwise. 0803 Possible error codes: 0804 - XML_ERROR_SUSPENDED: when suspending an already suspended parser. 0805 - XML_ERROR_FINISHED: when the parser has already finished. 0806 - XML_ERROR_SUSPEND_PE: when suspending while parsing an external PE. 0807 0808 When resumable != 0 (true) then parsing is suspended, that is, 0809 XML_Parse() and XML_ParseBuffer() return XML_STATUS_SUSPENDED. 0810 Otherwise, parsing is aborted, that is, XML_Parse() and XML_ParseBuffer() 0811 return XML_STATUS_ERROR with error code XML_ERROR_ABORTED. 0812 0813 *Note*: 0814 This will be applied to the current parser instance only, that is, if 0815 there is a parent parser then it will continue parsing when the 0816 externalEntityRefHandler() returns. It is up to the implementation of 0817 the externalEntityRefHandler() to call XML_StopParser() on the parent 0818 parser (recursively), if one wants to stop parsing altogether. 0819 0820 When suspended, parsing can be resumed by calling XML_ResumeParser(). 0821 */ 0822 XMLPARSEAPI(enum XML_Status) 0823 XML_StopParser(XML_Parser parser, XML_Bool resumable); 0824 0825 /* Resumes parsing after it has been suspended with XML_StopParser(). 0826 Must not be called from within a handler call-back. Returns same 0827 status codes as XML_Parse() or XML_ParseBuffer(). 0828 Additional error code XML_ERROR_NOT_SUSPENDED possible. 0829 0830 *Note*: 0831 This must be called on the most deeply nested child parser instance 0832 first, and on its parent parser only after the child parser has finished, 0833 to be applied recursively until the document entity's parser is restarted. 0834 That is, the parent parser will not resume by itself and it is up to the 0835 application to call XML_ResumeParser() on it at the appropriate moment. 0836 */ 0837 XMLPARSEAPI(enum XML_Status) 0838 XML_ResumeParser(XML_Parser parser); 0839 0840 enum XML_Parsing { XML_INITIALIZED, XML_PARSING, XML_FINISHED, XML_SUSPENDED }; 0841 0842 typedef struct { 0843 enum XML_Parsing parsing; 0844 XML_Bool finalBuffer; 0845 } XML_ParsingStatus; 0846 0847 /* Returns status of parser with respect to being initialized, parsing, 0848 finished, or suspended and processing the final buffer. 0849 XXX XML_Parse() and XML_ParseBuffer() should return XML_ParsingStatus, 0850 XXX with XML_FINISHED_OK or XML_FINISHED_ERROR replacing XML_FINISHED 0851 */ 0852 XMLPARSEAPI(void) 0853 XML_GetParsingStatus(XML_Parser parser, XML_ParsingStatus *status); 0854 0855 /* Creates an XML_Parser object that can parse an external general 0856 entity; context is a '\0'-terminated string specifying the parse 0857 context; encoding is a '\0'-terminated string giving the name of 0858 the externally specified encoding, or NULL if there is no 0859 externally specified encoding. The context string consists of a 0860 sequence of tokens separated by formfeeds (\f); a token consisting 0861 of a name specifies that the general entity of the name is open; a 0862 token of the form prefix=uri specifies the namespace for a 0863 particular prefix; a token of the form =uri specifies the default 0864 namespace. This can be called at any point after the first call to 0865 an ExternalEntityRefHandler so longer as the parser has not yet 0866 been freed. The new parser is completely independent and may 0867 safely be used in a separate thread. The handlers and userData are 0868 initialized from the parser argument. Returns NULL if out of memory. 0869 Otherwise returns a new XML_Parser object. 0870 */ 0871 XMLPARSEAPI(XML_Parser) 0872 XML_ExternalEntityParserCreate(XML_Parser parser, const XML_Char *context, 0873 const XML_Char *encoding); 0874 0875 enum XML_ParamEntityParsing { 0876 XML_PARAM_ENTITY_PARSING_NEVER, 0877 XML_PARAM_ENTITY_PARSING_UNLESS_STANDALONE, 0878 XML_PARAM_ENTITY_PARSING_ALWAYS 0879 }; 0880 0881 /* Controls parsing of parameter entities (including the external DTD 0882 subset). If parsing of parameter entities is enabled, then 0883 references to external parameter entities (including the external 0884 DTD subset) will be passed to the handler set with 0885 XML_SetExternalEntityRefHandler. The context passed will be 0. 0886 0887 Unlike external general entities, external parameter entities can 0888 only be parsed synchronously. If the external parameter entity is 0889 to be parsed, it must be parsed during the call to the external 0890 entity ref handler: the complete sequence of 0891 XML_ExternalEntityParserCreate, XML_Parse/XML_ParseBuffer and 0892 XML_ParserFree calls must be made during this call. After 0893 XML_ExternalEntityParserCreate has been called to create the parser 0894 for the external parameter entity (context must be 0 for this 0895 call), it is illegal to make any calls on the old parser until 0896 XML_ParserFree has been called on the newly created parser. 0897 If the library has been compiled without support for parameter 0898 entity parsing (ie without XML_DTD being defined), then 0899 XML_SetParamEntityParsing will return 0 if parsing of parameter 0900 entities is requested; otherwise it will return non-zero. 0901 Note: If XML_SetParamEntityParsing is called after XML_Parse or 0902 XML_ParseBuffer, then it has no effect and will always return 0. 0903 Note: If parser == NULL, the function will do nothing and return 0. 0904 */ 0905 XMLPARSEAPI(int) 0906 XML_SetParamEntityParsing(XML_Parser parser, 0907 enum XML_ParamEntityParsing parsing); 0908 0909 /* Sets the hash salt to use for internal hash calculations. 0910 Helps in preventing DoS attacks based on predicting hash 0911 function behavior. This must be called before parsing is started. 0912 Returns 1 if successful, 0 when called after parsing has started. 0913 Note: If parser == NULL, the function will do nothing and return 0. 0914 */ 0915 XMLPARSEAPI(int) 0916 XML_SetHashSalt(XML_Parser parser, unsigned long hash_salt); 0917 0918 /* If XML_Parse or XML_ParseBuffer have returned XML_STATUS_ERROR, then 0919 XML_GetErrorCode returns information about the error. 0920 */ 0921 XMLPARSEAPI(enum XML_Error) 0922 XML_GetErrorCode(XML_Parser parser); 0923 0924 /* These functions return information about the current parse 0925 location. They may be called from any callback called to report 0926 some parse event; in this case the location is the location of the 0927 first of the sequence of characters that generated the event. When 0928 called from callbacks generated by declarations in the document 0929 prologue, the location identified isn't as neatly defined, but will 0930 be within the relevant markup. When called outside of the callback 0931 functions, the position indicated will be just past the last parse 0932 event (regardless of whether there was an associated callback). 0933 0934 They may also be called after returning from a call to XML_Parse 0935 or XML_ParseBuffer. If the return value is XML_STATUS_ERROR then 0936 the location is the location of the character at which the error 0937 was detected; otherwise the location is the location of the last 0938 parse event, as described above. 0939 0940 Note: XML_GetCurrentLineNumber and XML_GetCurrentColumnNumber 0941 return 0 to indicate an error. 0942 Note: XML_GetCurrentByteIndex returns -1 to indicate an error. 0943 */ 0944 XMLPARSEAPI(XML_Size) XML_GetCurrentLineNumber(XML_Parser parser); 0945 XMLPARSEAPI(XML_Size) XML_GetCurrentColumnNumber(XML_Parser parser); 0946 XMLPARSEAPI(XML_Index) XML_GetCurrentByteIndex(XML_Parser parser); 0947 0948 /* Return the number of bytes in the current event. 0949 Returns 0 if the event is in an internal entity. 0950 */ 0951 XMLPARSEAPI(int) 0952 XML_GetCurrentByteCount(XML_Parser parser); 0953 0954 /* If XML_CONTEXT_BYTES is defined, returns the input buffer, sets 0955 the integer pointed to by offset to the offset within this buffer 0956 of the current parse position, and sets the integer pointed to by size 0957 to the size of this buffer (the number of input bytes). Otherwise 0958 returns a NULL pointer. Also returns a NULL pointer if a parse isn't 0959 active. 0960 0961 NOTE: The character pointer returned should not be used outside 0962 the handler that makes the call. 0963 */ 0964 XMLPARSEAPI(const char *) 0965 XML_GetInputContext(XML_Parser parser, int *offset, int *size); 0966 0967 /* For backwards compatibility with previous versions. */ 0968 #define XML_GetErrorLineNumber XML_GetCurrentLineNumber 0969 #define XML_GetErrorColumnNumber XML_GetCurrentColumnNumber 0970 #define XML_GetErrorByteIndex XML_GetCurrentByteIndex 0971 0972 /* Frees the content model passed to the element declaration handler */ 0973 XMLPARSEAPI(void) 0974 XML_FreeContentModel(XML_Parser parser, XML_Content *model); 0975 0976 /* Exposing the memory handling functions used in Expat */ 0977 XMLPARSEAPI(void *) 0978 XML_ATTR_MALLOC 0979 XML_ATTR_ALLOC_SIZE(2) 0980 XML_MemMalloc(XML_Parser parser, size_t size); 0981 0982 XMLPARSEAPI(void *) 0983 XML_ATTR_ALLOC_SIZE(3) 0984 XML_MemRealloc(XML_Parser parser, void *ptr, size_t size); 0985 0986 XMLPARSEAPI(void) 0987 XML_MemFree(XML_Parser parser, void *ptr); 0988 0989 /* Frees memory used by the parser. */ 0990 XMLPARSEAPI(void) 0991 XML_ParserFree(XML_Parser parser); 0992 0993 /* Returns a string describing the error. */ 0994 XMLPARSEAPI(const XML_LChar *) 0995 XML_ErrorString(enum XML_Error code); 0996 0997 /* Return a string containing the version number of this expat */ 0998 XMLPARSEAPI(const XML_LChar *) 0999 XML_ExpatVersion(void); 1000 1001 typedef struct { 1002 int major; 1003 int minor; 1004 int micro; 1005 } XML_Expat_Version; 1006 1007 /* Return an XML_Expat_Version structure containing numeric version 1008 number information for this version of expat. 1009 */ 1010 XMLPARSEAPI(XML_Expat_Version) 1011 XML_ExpatVersionInfo(void); 1012 1013 /* Added in Expat 1.95.5. */ 1014 enum XML_FeatureEnum { 1015 XML_FEATURE_END = 0, 1016 XML_FEATURE_UNICODE, 1017 XML_FEATURE_UNICODE_WCHAR_T, 1018 XML_FEATURE_DTD, 1019 XML_FEATURE_CONTEXT_BYTES, 1020 XML_FEATURE_MIN_SIZE, 1021 XML_FEATURE_SIZEOF_XML_CHAR, 1022 XML_FEATURE_SIZEOF_XML_LCHAR, 1023 XML_FEATURE_NS, 1024 XML_FEATURE_LARGE_SIZE, 1025 XML_FEATURE_ATTR_INFO, 1026 /* Added in Expat 2.4.0. */ 1027 XML_FEATURE_BILLION_LAUGHS_ATTACK_PROTECTION_MAXIMUM_AMPLIFICATION_DEFAULT, 1028 XML_FEATURE_BILLION_LAUGHS_ATTACK_PROTECTION_ACTIVATION_THRESHOLD_DEFAULT 1029 /* Additional features must be added to the end of this enum. */ 1030 }; 1031 1032 typedef struct { 1033 enum XML_FeatureEnum feature; 1034 const XML_LChar *name; 1035 long int value; 1036 } XML_Feature; 1037 1038 XMLPARSEAPI(const XML_Feature *) 1039 XML_GetFeatureList(void); 1040 1041 #ifdef XML_DTD 1042 /* Added in Expat 2.4.0. */ 1043 XMLPARSEAPI(XML_Bool) 1044 XML_SetBillionLaughsAttackProtectionMaximumAmplification( 1045 XML_Parser parser, float maximumAmplificationFactor); 1046 1047 /* Added in Expat 2.4.0. */ 1048 XMLPARSEAPI(XML_Bool) 1049 XML_SetBillionLaughsAttackProtectionActivationThreshold( 1050 XML_Parser parser, unsigned long long activationThresholdBytes); 1051 #endif 1052 1053 /* Expat follows the semantic versioning convention. 1054 See http://semver.org. 1055 */ 1056 #define XML_MAJOR_VERSION 2 1057 #define XML_MINOR_VERSION 5 1058 #define XML_MICRO_VERSION 0 1059 1060 #ifdef __cplusplus 1061 } 1062 #endif 1063 1064 #endif /* not Expat_INCLUDED */
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