contrib/src/xml/expat/xmlparse/xmlparse.c

   1 /*
   2 Copyright (c) 1998, 1999, 2000 Thai Open Source Software Center Ltd
   3 See the file copying.txt for copying permission.
   4 */
   5
   6 #include "xmldef.h"
   7 #include "xmlparse.h"
   8 #include <stddef.h>
   9
  10 #ifdef XML_UNICODE
  11 #define XML_ENCODE_MAX XML_UTF16_ENCODE_MAX
  12 #define XmlConvert XmlUtf16Convert
  13 #define XmlGetInternalEncoding XmlGetUtf16InternalEncoding
  14 #define XmlGetInternalEncodingNS XmlGetUtf16InternalEncodingNS
  15 #define XmlEncode XmlUtf16Encode
  16 #define MUST_CONVERT(enc, s) (!(enc)->isUtf16 || (((unsigned long)s) & 1))
  17 typedef unsigned short ICHAR;
  18 #else
  19 #define XML_ENCODE_MAX XML_UTF8_ENCODE_MAX
  20 #define XmlConvert XmlUtf8Convert
  21 #define XmlGetInternalEncoding XmlGetUtf8InternalEncoding
  22 #define XmlGetInternalEncodingNS XmlGetUtf8InternalEncodingNS
  23 #define XmlEncode XmlUtf8Encode
  24 #define MUST_CONVERT(enc, s) (!(enc)->isUtf8)
  25 typedef char ICHAR;
  26 #endif
  27
  28
  29 #ifndef XML_NS
  30
  31 #define XmlInitEncodingNS XmlInitEncoding
  32 #define XmlInitUnknownEncodingNS XmlInitUnknownEncoding
  33 #undef XmlGetInternalEncodingNS
  34 #define XmlGetInternalEncodingNS XmlGetInternalEncoding
  35 #define XmlParseXmlDeclNS XmlParseXmlDecl
  36
  37 #endif
  38
  39 #ifdef XML_UNICODE_WCHAR_T
  40 #define XML_T(x) L ## x
  41 #else
  42 #define XML_T(x) x
  43 #endif
  44
  45 /* Round up n to be a multiple of sz, where sz is a power of 2. */
  46 #define ROUND_UP(n, sz) (((n) + ((sz) - 1)) & ~((sz) - 1))
  47
  48 #include "xmltok.h"
  49 #include "xmlrole.h"
  50
  51 typedef const XML_Char *KEY;
  52
  53 typedef struct {
  54   KEY name;
  55 } NAMED;
  56
  57 typedef struct {
  58   NAMED **v;
  59   size_t size;
  60   size_t used;
  61   size_t usedLim;
  62 } HASH_TABLE;
  63
  64 typedef struct {
  65   NAMED **p;
  66   NAMED **end;
  67 } HASH_TABLE_ITER;
  68
  69 #define INIT_TAG_BUF_SIZE 32  /* must be a multiple of sizeof(XML_Char) */
  70 #define INIT_DATA_BUF_SIZE 1024
  71 #define INIT_ATTS_SIZE 16
  72 #define INIT_BLOCK_SIZE 1024
  73 #define INIT_BUFFER_SIZE 1024
  74
  75 #define EXPAND_SPARE 24
  76
  77 typedef struct binding {
  78   struct prefix *prefix;
  79   struct binding *nextTagBinding;
  80   struct binding *prevPrefixBinding;
  81   const struct attribute_id *attId;
  82   XML_Char *uri;
  83   int uriLen;
  84   int uriAlloc;
  85 } BINDING;
  86
  87 typedef struct prefix {
  88   const XML_Char *name;
  89   BINDING *binding;
  90 } PREFIX;
  91
  92 typedef struct {
  93   const XML_Char *str;
  94   const XML_Char *localPart;
  95   int uriLen;
  96 } TAG_NAME;
  97
  98 typedef struct tag {
  99   struct tag *parent;
 100   const char *rawName;
 101   int rawNameLength;
 102   TAG_NAME name;
 103   char *buf;
 104   char *bufEnd;
 105   BINDING *bindings;
 106 } TAG;
 107
 108 typedef struct {
 109   const XML_Char *name;
 110   const XML_Char *textPtr;
 111   int textLen;
 112   const XML_Char *systemId;
 113   const XML_Char *base;
 114   const XML_Char *publicId;
 115   const XML_Char *notation;
 116   char open;
 117 } ENTITY;
 118
 119 typedef struct block {
 120   struct block *next;
 121   int size;
 122   XML_Char s[1];
 123 } BLOCK;
 124
 125 typedef struct {
 126   BLOCK *blocks;
 127   BLOCK *freeBlocks;
 128   const XML_Char *end;
 129   XML_Char *ptr;
 130   XML_Char *start;
 131 } STRING_POOL;
 132
 133 /* The XML_Char before the name is used to determine whether
 134 an attribute has been specified. */
 135 typedef struct attribute_id {
 136   XML_Char *name;
 137   PREFIX *prefix;
 138   char maybeTokenized;
 139   char xmlns;
 140 } ATTRIBUTE_ID;
 141
 142 typedef struct {
 143   const ATTRIBUTE_ID *id;
 144   char isCdata;
 145   const XML_Char *value;
 146 } DEFAULT_ATTRIBUTE;
 147
 148 typedef struct {
 149   const XML_Char *name;
 150   PREFIX *prefix;
 151   const ATTRIBUTE_ID *idAtt;
 152   int nDefaultAtts;
 153   int allocDefaultAtts;
 154   DEFAULT_ATTRIBUTE *defaultAtts;
 155 } ELEMENT_TYPE;
 156
 157 typedef struct {
 158   HASH_TABLE generalEntities;
 159   HASH_TABLE elementTypes;
 160   HASH_TABLE attributeIds;
 161   HASH_TABLE prefixes;
 162   STRING_POOL pool;
 163   int complete;
 164   int standalone;
 165 #ifdef XML_DTD
 166   HASH_TABLE paramEntities;
 167 #endif /* XML_DTD */
 168   PREFIX defaultPrefix;
 169 } DTD;
 170
 171 typedef struct open_internal_entity {
 172   const char *internalEventPtr;
 173   const char *internalEventEndPtr;
 174   struct open_internal_entity *next;
 175   ENTITY *entity;
 176 } OPEN_INTERNAL_ENTITY;
 177
 178 typedef enum XML_Error Processor(XML_Parser parser,
 179                                  const char *start,
 180                                  const char *end,
 181                                  const char **endPtr);
 182
 183 static Processor prologProcessor;
 184 static Processor prologInitProcessor;
 185 static Processor contentProcessor;
 186 static Processor cdataSectionProcessor;
 187 #ifdef XML_DTD
 188 static Processor ignoreSectionProcessor;
 189 #endif /* XML_DTD */
 190 static Processor epilogProcessor;
 191 static Processor errorProcessor;
 192 static Processor externalEntityInitProcessor;
 193 static Processor externalEntityInitProcessor2;
 194 static Processor externalEntityInitProcessor3;
 195 static Processor externalEntityContentProcessor;
 196
 197 static enum XML_Error
 198 handleUnknownEncoding(XML_Parser parser, const XML_Char *encodingName);
 199 static enum XML_Error
 200 processXmlDecl(XML_Parser parser, int isGeneralTextEntity, const char *, const char *);
 201 static enum XML_Error
 202 initializeEncoding(XML_Parser parser);
 203 static enum XML_Error
 204 doProlog(XML_Parser parser, const ENCODING *enc, const char *s,
 205          const char *end, int tok, const char *next, const char **nextPtr);
 206 static enum XML_Error
 207 processInternalParamEntity(XML_Parser parser, ENTITY *entity);
 208 static enum XML_Error
 209 doContent(XML_Parser parser, int startTagLevel, const ENCODING *enc,
 210           const char *start, const char *end, const char **endPtr);
 211 static enum XML_Error
 212 doCdataSection(XML_Parser parser, const ENCODING *, const char **startPtr, const char *end, const char **nextPtr);
 213 #ifdef XML_DTD
 214 static enum XML_Error
 215 doIgnoreSection(XML_Parser parser, const ENCODING *, const char **startPtr, const char *end, const char **nextPtr);
 216 #endif /* XML_DTD */
 217 static enum XML_Error storeAtts(XML_Parser parser, const ENCODING *, const char *s,
 218                                 TAG_NAME *tagNamePtr, BINDING **bindingsPtr);
 219 static
 220 int addBinding(XML_Parser parser, PREFIX *prefix, const ATTRIBUTE_ID *attId, const XML_Char *uri, BINDING **bindingsPtr);
 221 static int
 222 defineAttribute(ELEMENT_TYPE *type, ATTRIBUTE_ID *, int isCdata, int isId, const XML_Char *dfltValue);
 223 static enum XML_Error
 224 storeAttributeValue(XML_Parser parser, const ENCODING *, int isCdata, const char *, const char *,
 225                     STRING_POOL *);
 226 static enum XML_Error
 227 appendAttributeValue(XML_Parser parser, const ENCODING *, int isCdata, const char *, const char *,
 228                     STRING_POOL *);
 229 static ATTRIBUTE_ID *
 230 getAttributeId(XML_Parser parser, const ENCODING *enc, const char *start, const char *end);
 231 static int setElementTypePrefix(XML_Parser parser, ELEMENT_TYPE *);
 232 static enum XML_Error
 233 storeEntityValue(XML_Parser parser, const ENCODING *enc, const char *start, const char *end);
 234 static int
 235 reportProcessingInstruction(XML_Parser parser, const ENCODING *enc, const char *start, const char *end);
 236 static int
 237 reportComment(XML_Parser parser, const ENCODING *enc, const char *start, const char *end);
 238 static void
 239 reportDefault(XML_Parser parser, const ENCODING *enc, const char *start, const char *end);
 240
 241 static const XML_Char *getContext(XML_Parser parser);
 242 static int setContext(XML_Parser parser, const XML_Char *context);
 243 static void normalizePublicId(XML_Char *s);
 244 static int dtdInit(DTD *);
 245 static void dtdDestroy(DTD *);
 246 static int dtdCopy(DTD *newDtd, const DTD *oldDtd);
 247 static int copyEntityTable(HASH_TABLE *, STRING_POOL *, const HASH_TABLE *);
 248 #ifdef XML_DTD
 249 static void dtdSwap(DTD *, DTD *);
 250 #endif /* XML_DTD */
 251 static NAMED *lookup(HASH_TABLE *table, KEY name, size_t createSize);
 252 static void hashTableInit(HASH_TABLE *);
 253 static void hashTableDestroy(HASH_TABLE *);
 254 static void hashTableIterInit(HASH_TABLE_ITER *, const HASH_TABLE *);
 255 static NAMED *hashTableIterNext(HASH_TABLE_ITER *);
 256 static void poolInit(STRING_POOL *);
 257 static void poolClear(STRING_POOL *);
 258 static void poolDestroy(STRING_POOL *);
 259 static XML_Char *poolAppend(STRING_POOL *pool, const ENCODING *enc,
 260                             const char *ptr, const char *end);
 261 static XML_Char *poolStoreString(STRING_POOL *pool, const ENCODING *enc,
 262                                   const char *ptr, const char *end);
 263 static int poolGrow(STRING_POOL *pool);
 264 static const XML_Char *poolCopyString(STRING_POOL *pool, const XML_Char *s);
 265 static const XML_Char *poolCopyStringN(STRING_POOL *pool, const XML_Char *s, int n);
 266
 267 #define poolStart(pool) ((pool)->start)
 268 #define poolEnd(pool) ((pool)->ptr)
 269 #define poolLength(pool) ((pool)->ptr - (pool)->start)
 270 #define poolChop(pool) ((void)--(pool->ptr))
 271 #define poolLastChar(pool) (((pool)->ptr)[-1])
 272 #define poolDiscard(pool) ((pool)->ptr = (pool)->start)
 273 #define poolFinish(pool) ((pool)->start = (pool)->ptr)
 274 #define poolAppendChar(pool, c) \
 275   (((pool)->ptr == (pool)->end && !poolGrow(pool)) \
 276    ? 0 \
 277    : ((*((pool)->ptr)++ = c), 1))
 278
 279 typedef struct {
 280   /* The first member must be userData so that the XML_GetUserData macro works. */
 281   void *m_userData;
 282   void *m_handlerArg;
 283   char *m_buffer;
 284   /* first character to be parsed */
 285   const char *m_bufferPtr;
 286   /* past last character to be parsed */
 287   char *m_bufferEnd;
 288   /* allocated end of buffer */
 289   const char *m_bufferLim;
 290   long m_parseEndByteIndex;
 291   const char *m_parseEndPtr;
 292   XML_Char *m_dataBuf;
 293   XML_Char *m_dataBufEnd;
 294   XML_StartElementHandler m_startElementHandler;
 295   XML_EndElementHandler m_endElementHandler;
 296   XML_CharacterDataHandler m_characterDataHandler;
 297   XML_ProcessingInstructionHandler m_processingInstructionHandler;
 298   XML_CommentHandler m_commentHandler;
 299   XML_StartCdataSectionHandler m_startCdataSectionHandler;
 300   XML_EndCdataSectionHandler m_endCdataSectionHandler;
 301   XML_DefaultHandler m_defaultHandler;
 302   XML_StartDoctypeDeclHandler m_startDoctypeDeclHandler;
 303   XML_EndDoctypeDeclHandler m_endDoctypeDeclHandler;
 304   XML_UnparsedEntityDeclHandler m_unparsedEntityDeclHandler;
 305   XML_NotationDeclHandler m_notationDeclHandler;
 306   XML_ExternalParsedEntityDeclHandler m_externalParsedEntityDeclHandler;
 307   XML_InternalParsedEntityDeclHandler m_internalParsedEntityDeclHandler;
 308   XML_StartNamespaceDeclHandler m_startNamespaceDeclHandler;
 309   XML_EndNamespaceDeclHandler m_endNamespaceDeclHandler;
 310   XML_NotStandaloneHandler m_notStandaloneHandler;
 311   XML_ExternalEntityRefHandler m_externalEntityRefHandler;
 312   void *m_externalEntityRefHandlerArg;
 313   XML_UnknownEncodingHandler m_unknownEncodingHandler;
 314   const ENCODING *m_encoding;
 315   INIT_ENCODING m_initEncoding;
 316   const ENCODING *m_internalEncoding;
 317   const XML_Char *m_protocolEncodingName;
 318   int m_ns;
 319   void *m_unknownEncodingMem;
 320   void *m_unknownEncodingData;
 321   void *m_unknownEncodingHandlerData;
 322   void (*m_unknownEncodingRelease)(void *);
 323   PROLOG_STATE m_prologState;
 324   Processor *m_processor;
 325   enum XML_Error m_errorCode;
 326   const char *m_eventPtr;
 327   const char *m_eventEndPtr;
 328   const char *m_positionPtr;
 329   OPEN_INTERNAL_ENTITY *m_openInternalEntities;
 330   int m_defaultExpandInternalEntities;
 331   int m_tagLevel;
 332   ENTITY *m_declEntity;
 333   const XML_Char *m_declNotationName;
 334   const XML_Char *m_declNotationPublicId;
 335   ELEMENT_TYPE *m_declElementType;
 336   ATTRIBUTE_ID *m_declAttributeId;
 337   char m_declAttributeIsCdata;
 338   char m_declAttributeIsId;
 339   DTD m_dtd;
 340   const XML_Char *m_curBase;
 341   TAG *m_tagStack;
 342   TAG *m_freeTagList;
 343   BINDING *m_inheritedBindings;
 344   BINDING *m_freeBindingList;
 345   int m_attsSize;
 346   int m_nSpecifiedAtts;
 347   int m_idAttIndex;
 348   ATTRIBUTE *m_atts;
 349   POSITION m_position;
 350   STRING_POOL m_tempPool;
 351   STRING_POOL m_temp2Pool;
 352   char *m_groupConnector;
 353   unsigned m_groupSize;
 354   int m_hadExternalDoctype;
 355   XML_Char m_namespaceSeparator;
 356 #ifdef XML_DTD
 357   enum XML_ParamEntityParsing m_paramEntityParsing;
 358   XML_Parser m_parentParser;
 359 #endif
 360 } Parser;
 361
 362 #define userData (((Parser *)parser)->m_userData)
 363 #define handlerArg (((Parser *)parser)->m_handlerArg)
 364 #define startElementHandler (((Parser *)parser)->m_startElementHandler)
 365 #define endElementHandler (((Parser *)parser)->m_endElementHandler)
 366 #define characterDataHandler (((Parser *)parser)->m_characterDataHandler)
 367 #define processingInstructionHandler (((Parser *)parser)->m_processingInstructionHandler)
 368 #define commentHandler (((Parser *)parser)->m_commentHandler)
 369 #define startCdataSectionHandler (((Parser *)parser)->m_startCdataSectionHandler)
 370 #define endCdataSectionHandler (((Parser *)parser)->m_endCdataSectionHandler)
 371 #define defaultHandler (((Parser *)parser)->m_defaultHandler)
 372 #define startDoctypeDeclHandler (((Parser *)parser)->m_startDoctypeDeclHandler)
 373 #define endDoctypeDeclHandler (((Parser *)parser)->m_endDoctypeDeclHandler)
 374 #define unparsedEntityDeclHandler (((Parser *)parser)->m_unparsedEntityDeclHandler)
 375 #define notationDeclHandler (((Parser *)parser)->m_notationDeclHandler)
 376 #define externalParsedEntityDeclHandler (((Parser *)parser)->m_externalParsedEntityDeclHandler)
 377 #define internalParsedEntityDeclHandler (((Parser *)parser)->m_internalParsedEntityDeclHandler)
 378 #define startNamespaceDeclHandler (((Parser *)parser)->m_startNamespaceDeclHandler)
 379 #define endNamespaceDeclHandler (((Parser *)parser)->m_endNamespaceDeclHandler)
 380 #define notStandaloneHandler (((Parser *)parser)->m_notStandaloneHandler)
 381 #define externalEntityRefHandler (((Parser *)parser)->m_externalEntityRefHandler)
 382 #define externalEntityRefHandlerArg (((Parser *)parser)->m_externalEntityRefHandlerArg)
 383 #define unknownEncodingHandler (((Parser *)parser)->m_unknownEncodingHandler)
 384 #define encoding (((Parser *)parser)->m_encoding)
 385 #define initEncoding (((Parser *)parser)->m_initEncoding)
 386 #define internalEncoding (((Parser *)parser)->m_internalEncoding)
 387 #define unknownEncodingMem (((Parser *)parser)->m_unknownEncodingMem)
 388 #define unknownEncodingData (((Parser *)parser)->m_unknownEncodingData)
 389 #define unknownEncodingHandlerData \
 390   (((Parser *)parser)->m_unknownEncodingHandlerData)
 391 #define unknownEncodingRelease (((Parser *)parser)->m_unknownEncodingRelease)
 392 #define protocolEncodingName (((Parser *)parser)->m_protocolEncodingName)
 393 #define ns (((Parser *)parser)->m_ns)
 394 #define prologState (((Parser *)parser)->m_prologState)
 395 #define processor (((Parser *)parser)->m_processor)
 396 #define errorCode (((Parser *)parser)->m_errorCode)
 397 #define eventPtr (((Parser *)parser)->m_eventPtr)
 398 #define eventEndPtr (((Parser *)parser)->m_eventEndPtr)
 399 #define positionPtr (((Parser *)parser)->m_positionPtr)
 400 #define position (((Parser *)parser)->m_position)
 401 #define openInternalEntities (((Parser *)parser)->m_openInternalEntities)
 402 #define defaultExpandInternalEntities (((Parser *)parser)->m_defaultExpandInternalEntities)
 403 #define tagLevel (((Parser *)parser)->m_tagLevel)
 404 #define buffer (((Parser *)parser)->m_buffer)
 405 #define bufferPtr (((Parser *)parser)->m_bufferPtr)
 406 #define bufferEnd (((Parser *)parser)->m_bufferEnd)
 407 #define parseEndByteIndex (((Parser *)parser)->m_parseEndByteIndex)
 408 #define parseEndPtr (((Parser *)parser)->m_parseEndPtr)
 409 #define bufferLim (((Parser *)parser)->m_bufferLim)
 410 #define dataBuf (((Parser *)parser)->m_dataBuf)
 411 #define dataBufEnd (((Parser *)parser)->m_dataBufEnd)
 412 #define dtd (((Parser *)parser)->m_dtd)
 413 #define curBase (((Parser *)parser)->m_curBase)
 414 #define declEntity (((Parser *)parser)->m_declEntity)
 415 #define declNotationName (((Parser *)parser)->m_declNotationName)
 416 #define declNotationPublicId (((Parser *)parser)->m_declNotationPublicId)
 417 #define declElementType (((Parser *)parser)->m_declElementType)
 418 #define declAttributeId (((Parser *)parser)->m_declAttributeId)
 419 #define declAttributeIsCdata (((Parser *)parser)->m_declAttributeIsCdata)
 420 #define declAttributeIsId (((Parser *)parser)->m_declAttributeIsId)
 421 #define freeTagList (((Parser *)parser)->m_freeTagList)
 422 #define freeBindingList (((Parser *)parser)->m_freeBindingList)
 423 #define inheritedBindings (((Parser *)parser)->m_inheritedBindings)
 424 #define tagStack (((Parser *)parser)->m_tagStack)
 425 #define atts (((Parser *)parser)->m_atts)
 426 #define attsSize (((Parser *)parser)->m_attsSize)
 427 #define nSpecifiedAtts (((Parser *)parser)->m_nSpecifiedAtts)
 428 #define idAttIndex (((Parser *)parser)->m_idAttIndex)
 429 #define tempPool (((Parser *)parser)->m_tempPool)
 430 #define temp2Pool (((Parser *)parser)->m_temp2Pool)
 431 #define groupConnector (((Parser *)parser)->m_groupConnector)
 432 #define groupSize (((Parser *)parser)->m_groupSize)
 433 #define hadExternalDoctype (((Parser *)parser)->m_hadExternalDoctype)
 434 #define namespaceSeparator (((Parser *)parser)->m_namespaceSeparator)
 435 #ifdef XML_DTD
 436 #define parentParser (((Parser *)parser)->m_parentParser)
 437 #define paramEntityParsing (((Parser *)parser)->m_paramEntityParsing)
 438 #endif /* XML_DTD */
 439
 440 #ifdef _MSC_VER
 441 #ifdef _DEBUG
 442 Parser *asParser(XML_Parser parser)
 443 {
 444   return parser;
 445 }
 446 #endif
 447 #endif
 448
 449 XML_Parser XML_ParserCreate(const XML_Char *encodingName)
 450 {
 451   XML_Parser parser = malloc(sizeof(Parser));
 452   if (!parser)
 453     return parser;
 454   processor = prologInitProcessor;
 455   XmlPrologStateInit(&prologState);
 456   userData = 0;
 457   handlerArg = 0;
 458   startElementHandler = 0;
 459   endElementHandler = 0;
 460   characterDataHandler = 0;
 461   processingInstructionHandler = 0;
 462   commentHandler = 0;
 463   startCdataSectionHandler = 0;
 464   endCdataSectionHandler = 0;
 465   defaultHandler = 0;
 466   startDoctypeDeclHandler = 0;
 467   endDoctypeDeclHandler = 0;
 468   unparsedEntityDeclHandler = 0;
 469   notationDeclHandler = 0;
 470   externalParsedEntityDeclHandler = 0;
 471   internalParsedEntityDeclHandler = 0;
 472   startNamespaceDeclHandler = 0;
 473   endNamespaceDeclHandler = 0;
 474   notStandaloneHandler = 0;
 475   externalEntityRefHandler = 0;
 476   externalEntityRefHandlerArg = parser;
 477   unknownEncodingHandler = 0;
 478   buffer = 0;
 479   bufferPtr = 0;
 480   bufferEnd = 0;
 481   parseEndByteIndex = 0;
 482   parseEndPtr = 0;
 483   bufferLim = 0;
 484   declElementType = 0;
 485   declAttributeId = 0;
 486   declEntity = 0;
 487   declNotationName = 0;
 488   declNotationPublicId = 0;
 489   memset(&position, 0, sizeof(POSITION));
 490   errorCode = XML_ERROR_NONE;
 491   eventPtr = 0;
 492   eventEndPtr = 0;
 493   positionPtr = 0;
 494   openInternalEntities = 0;
 495   tagLevel = 0;
 496   tagStack = 0;
 497   freeTagList = 0;
 498   freeBindingList = 0;
 499   inheritedBindings = 0;
 500   attsSize = INIT_ATTS_SIZE;
 501   atts = malloc(attsSize * sizeof(ATTRIBUTE));
 502   nSpecifiedAtts = 0;
 503   dataBuf = malloc(INIT_DATA_BUF_SIZE * sizeof(XML_Char));
 504   groupSize = 0;
 505   groupConnector = 0;
 506   hadExternalDoctype = 0;
 507   unknownEncodingMem = 0;
 508   unknownEncodingRelease = 0;
 509   unknownEncodingData = 0;
 510   unknownEncodingHandlerData = 0;
 511   namespaceSeparator = '!';
 512 #ifdef XML_DTD
 513   parentParser = 0;
 514   paramEntityParsing = XML_PARAM_ENTITY_PARSING_NEVER;
 515 #endif
 516   ns = 0;
 517   poolInit(&tempPool);
 518   poolInit(&temp2Pool);
 519   protocolEncodingName = encodingName ? poolCopyString(&tempPool, encodingName) : 0;
 520   curBase = 0;
 521   if (!dtdInit(&dtd) || !atts || !dataBuf
 522       || (encodingName && !protocolEncodingName)) {
 523     XML_ParserFree(parser);
 524     return 0;
 525   }
 526   dataBufEnd = dataBuf + INIT_DATA_BUF_SIZE;
 527   XmlInitEncoding(&initEncoding, &encoding, 0);
 528   internalEncoding = XmlGetInternalEncoding();
 529   return parser;
 530 }
 531
 532 XML_Parser XML_ParserCreateNS(const XML_Char *encodingName, XML_Char nsSep)
 533 {
 534   static
 535   const XML_Char implicitContext[] = {
 536     XML_T('x'), XML_T('m'), XML_T('l'), XML_T('='),
 537     XML_T('h'), XML_T('t'), XML_T('t'), XML_T('p'), XML_T(':'),
 538     XML_T('/'), XML_T('/'), XML_T('w'), XML_T('w'), XML_T('w'),
 539     XML_T('.'), XML_T('w'), XML_T('3'),
 540     XML_T('.'), XML_T('o'), XML_T('r'), XML_T('g'),
 541     XML_T('/'), XML_T('X'), XML_T('M'), XML_T('L'),
 542     XML_T('/'), XML_T('1'), XML_T('9'), XML_T('9'), XML_T('8'),
 543     XML_T('/'), XML_T('n'), XML_T('a'), XML_T('m'), XML_T('e'),
 544     XML_T('s'), XML_T('p'), XML_T('a'), XML_T('c'), XML_T('e'),
 545     XML_T('\0')
 546   };
 547
 548   XML_Parser parser = XML_ParserCreate(encodingName);
 549   if (parser) {
 550     XmlInitEncodingNS(&initEncoding, &encoding, 0);
 551     ns = 1;
 552     internalEncoding = XmlGetInternalEncodingNS();
 553     namespaceSeparator = nsSep;
 554   }
 555   if (!setContext(parser, implicitContext)) {
 556     XML_ParserFree(parser);
 557     return 0;
 558   }
 559   return parser;
 560 }
 561
 562 int XML_SetEncoding(XML_Parser parser, const XML_Char *encodingName)
 563 {
 564   if (!encodingName)
 565     protocolEncodingName = 0;
 566   else {
 567     protocolEncodingName = poolCopyString(&tempPool, encodingName);
 568     if (!protocolEncodingName)
 569       return 0;
 570   }
 571   return 1;
 572 }
 573
 574 XML_Parser XML_ExternalEntityParserCreate(XML_Parser oldParser,
 575                                           const XML_Char *context,
 576                                           const XML_Char *encodingName)
 577 {
 578   XML_Parser parser = oldParser;
 579   DTD *oldDtd = &dtd;
 580   XML_StartElementHandler oldStartElementHandler = startElementHandler;
 581   XML_EndElementHandler oldEndElementHandler = endElementHandler;
 582   XML_CharacterDataHandler oldCharacterDataHandler = characterDataHandler;
 583   XML_ProcessingInstructionHandler oldProcessingInstructionHandler = processingInstructionHandler;
 584   XML_CommentHandler oldCommentHandler = commentHandler;
 585   XML_StartCdataSectionHandler oldStartCdataSectionHandler = startCdataSectionHandler;
 586   XML_EndCdataSectionHandler oldEndCdataSectionHandler = endCdataSectionHandler;
 587   XML_DefaultHandler oldDefaultHandler = defaultHandler;
 588   XML_UnparsedEntityDeclHandler oldUnparsedEntityDeclHandler = unparsedEntityDeclHandler;
 589   XML_NotationDeclHandler oldNotationDeclHandler = notationDeclHandler;
 590   XML_ExternalParsedEntityDeclHandler oldExternalParsedEntityDeclHandler = externalParsedEntityDeclHandler;
 591   XML_InternalParsedEntityDeclHandler oldInternalParsedEntityDeclHandler = internalParsedEntityDeclHandler;
 592   XML_StartNamespaceDeclHandler oldStartNamespaceDeclHandler = startNamespaceDeclHandler;
 593   XML_EndNamespaceDeclHandler oldEndNamespaceDeclHandler = endNamespaceDeclHandler;
 594   XML_NotStandaloneHandler oldNotStandaloneHandler = notStandaloneHandler;
 595   XML_ExternalEntityRefHandler oldExternalEntityRefHandler = externalEntityRefHandler;
 596   XML_UnknownEncodingHandler oldUnknownEncodingHandler = unknownEncodingHandler;
 597   void *oldUserData = userData;
 598   void *oldHandlerArg = handlerArg;
 599   int oldDefaultExpandInternalEntities = defaultExpandInternalEntities;
 600   void *oldExternalEntityRefHandlerArg = externalEntityRefHandlerArg;
 601 #ifdef XML_DTD
 602   int oldParamEntityParsing = paramEntityParsing;
 603 #endif
 604   parser = (ns
 605             ? XML_ParserCreateNS(encodingName, namespaceSeparator)
 606             : XML_ParserCreate(encodingName));
 607   if (!parser)
 608     return 0;
 609   startElementHandler = oldStartElementHandler;
 610   endElementHandler = oldEndElementHandler;
 611   characterDataHandler = oldCharacterDataHandler;
 612   processingInstructionHandler = oldProcessingInstructionHandler;
 613   commentHandler = oldCommentHandler;
 614   startCdataSectionHandler = oldStartCdataSectionHandler;
 615   endCdataSectionHandler = oldEndCdataSectionHandler;
 616   defaultHandler = oldDefaultHandler;
 617   unparsedEntityDeclHandler = oldUnparsedEntityDeclHandler;
 618   notationDeclHandler = oldNotationDeclHandler;
 619   externalParsedEntityDeclHandler = oldExternalParsedEntityDeclHandler;
 620   internalParsedEntityDeclHandler = oldInternalParsedEntityDeclHandler;
 621   startNamespaceDeclHandler = oldStartNamespaceDeclHandler;
 622   endNamespaceDeclHandler = oldEndNamespaceDeclHandler;
 623   notStandaloneHandler = oldNotStandaloneHandler;
 624   externalEntityRefHandler = oldExternalEntityRefHandler;
 625   unknownEncodingHandler = oldUnknownEncodingHandler;
 626   userData = oldUserData;
 627   if (oldUserData == oldHandlerArg)
 628     handlerArg = userData;
 629   else
 630     handlerArg = parser;
 631   if (oldExternalEntityRefHandlerArg != oldParser)
 632     externalEntityRefHandlerArg = oldExternalEntityRefHandlerArg;
 633   defaultExpandInternalEntities = oldDefaultExpandInternalEntities;
 634 #ifdef XML_DTD
 635   paramEntityParsing = oldParamEntityParsing;
 636   if (context) {
 637 #endif /* XML_DTD */
 638     if (!dtdCopy(&dtd, oldDtd) || !setContext(parser, context)) {
 639       XML_ParserFree(parser);
 640       return 0;
 641     }
 642     processor = externalEntityInitProcessor;
 643 #ifdef XML_DTD
 644   }
 645   else {
 646     dtdSwap(&dtd, oldDtd);
 647     parentParser = oldParser;
 648     XmlPrologStateInitExternalEntity(&prologState);
 649     dtd.complete = 1;
 650     hadExternalDoctype = 1;
 651   }
 652 #endif /* XML_DTD */
 653   return parser;
 654 }
 655
 656 static
 657 void destroyBindings(BINDING *bindings)
 658 {
 659   for (;;) {
 660     BINDING *b = bindings;
 661     if (!b)
 662       break;
 663     bindings = b->nextTagBinding;
 664     free(b->uri);
 665     free(b);
 666   }
 667 }
 668
 669 void XML_ParserFree(XML_Parser parser)
 670 {
 671   for (;;) {
 672     TAG *p;
 673     if (tagStack == 0) {
 674       if (freeTagList == 0)
 675         break;
 676       tagStack = freeTagList;
 677       freeTagList = 0;
 678     }
 679     p = tagStack;
 680     tagStack = tagStack->parent;
 681     free(p->buf);
 682     destroyBindings(p->bindings);
 683     free(p);
 684   }
 685   destroyBindings(freeBindingList);
 686   destroyBindings(inheritedBindings);
 687   poolDestroy(&tempPool);
 688   poolDestroy(&temp2Pool);
 689 #ifdef XML_DTD
 690   if (parentParser) {
 691     if (hadExternalDoctype)
 692       dtd.complete = 0;
 693     dtdSwap(&dtd, &((Parser *)parentParser)->m_dtd);
 694   }
 695 #endif /* XML_DTD */
 696   dtdDestroy(&dtd);
 697   free((void *)atts);
 698   free(groupConnector);
 699   free(buffer);
 700   free(dataBuf);
 701   free(unknownEncodingMem);
 702   if (unknownEncodingRelease)
 703     unknownEncodingRelease(unknownEncodingData);
 704   free(parser);
 705 }
 706
 707 void XML_UseParserAsHandlerArg(XML_Parser parser)
 708 {
 709   handlerArg = parser;
 710 }
 711
 712 void XML_SetUserData(XML_Parser parser, void *p)
 713 {
 714   if (handlerArg == userData)
 715     handlerArg = userData = p;
 716   else
 717     userData = p;
 718 }
 719
 720 int XML_SetBase(XML_Parser parser, const XML_Char *p)
 721 {
 722   if (p) {
 723     p = poolCopyString(&dtd.pool, p);
 724     if (!p)
 725       return 0;
 726     curBase = p;
 727   }
 728   else
 729     curBase = 0;
 730   return 1;
 731 }
 732
 733 const XML_Char *XML_GetBase(XML_Parser parser)
 734 {
 735   return curBase;
 736 }
 737
 738 int XML_GetSpecifiedAttributeCount(XML_Parser parser)
 739 {
 740   return nSpecifiedAtts;
 741 }
 742
 743 int XML_GetIdAttributeIndex(XML_Parser parser)
 744 {
 745   return idAttIndex;
 746 }
 747
 748 void XML_SetElementHandler(XML_Parser parser,
 749                            XML_StartElementHandler start,
 750                            XML_EndElementHandler end)
 751 {
 752   startElementHandler = start;
 753   endElementHandler = end;
 754 }
 755
 756 void XML_SetCharacterDataHandler(XML_Parser parser,
 757                                  XML_CharacterDataHandler handler)
 758 {
 759   characterDataHandler = handler;
 760 }
 761
 762 void XML_SetProcessingInstructionHandler(XML_Parser parser,
 763                                          XML_ProcessingInstructionHandler handler)
 764 {
 765   processingInstructionHandler = handler;
 766 }
 767
 768 void XML_SetCommentHandler(XML_Parser parser,
 769                            XML_CommentHandler handler)
 770 {
 771   commentHandler = handler;
 772 }
 773
 774 void XML_SetCdataSectionHandler(XML_Parser parser,
 775                                 XML_StartCdataSectionHandler start,
 776                                 XML_EndCdataSectionHandler end)
 777 {
 778   startCdataSectionHandler = start;
 779   endCdataSectionHandler = end;
 780 }
 781
 782 void XML_SetDefaultHandler(XML_Parser parser,
 783                            XML_DefaultHandler handler)
 784 {
 785   defaultHandler = handler;
 786   defaultExpandInternalEntities = 0;
 787 }
 788
 789 void XML_SetDefaultHandlerExpand(XML_Parser parser,
 790                                  XML_DefaultHandler handler)
 791 {
 792   defaultHandler = handler;
 793   defaultExpandInternalEntities = 1;
 794 }
 795
 796 void XML_SetDoctypeDeclHandler(XML_Parser parser,
 797                                XML_StartDoctypeDeclHandler start,
 798                                XML_EndDoctypeDeclHandler end)
 799 {
 800   startDoctypeDeclHandler = start;
 801   endDoctypeDeclHandler = end;
 802 }
 803
 804 void XML_SetUnparsedEntityDeclHandler(XML_Parser parser,
 805                                       XML_UnparsedEntityDeclHandler handler)
 806 {
 807   unparsedEntityDeclHandler = handler;
 808 }
 809
 810 void XML_SetExternalParsedEntityDeclHandler(XML_Parser parser,
 811                                             XML_ExternalParsedEntityDeclHandler handler)
 812 {
 813   externalParsedEntityDeclHandler = handler;
 814 }
 815
 816 void XML_SetInternalParsedEntityDeclHandler(XML_Parser parser,
 817                                             XML_InternalParsedEntityDeclHandler handler)
 818 {
 819   internalParsedEntityDeclHandler = handler;
 820 }
 821
 822 void XML_SetNotationDeclHandler(XML_Parser parser,
 823                                 XML_NotationDeclHandler handler)
 824 {
 825   notationDeclHandler = handler;
 826 }
 827
 828 void XML_SetNamespaceDeclHandler(XML_Parser parser,
 829                                  XML_StartNamespaceDeclHandler start,
 830                                  XML_EndNamespaceDeclHandler end)
 831 {
 832   startNamespaceDeclHandler = start;
 833   endNamespaceDeclHandler = end;
 834 }
 835
 836 void XML_SetNotStandaloneHandler(XML_Parser parser,
 837                                  XML_NotStandaloneHandler handler)
 838 {
 839   notStandaloneHandler = handler;
 840 }
 841
 842 void XML_SetExternalEntityRefHandler(XML_Parser parser,
 843                                      XML_ExternalEntityRefHandler handler)
 844 {
 845   externalEntityRefHandler = handler;
 846 }
 847
 848 void XML_SetExternalEntityRefHandlerArg(XML_Parser parser, void *arg)
 849 {
 850   if (arg)
 851     externalEntityRefHandlerArg = arg;
 852   else
 853     externalEntityRefHandlerArg = parser;
 854 }
 855
 856 void XML_SetUnknownEncodingHandler(XML_Parser parser,
 857                                    XML_UnknownEncodingHandler handler,
 858                                    void *data)
 859 {
 860   unknownEncodingHandler = handler;
 861   unknownEncodingHandlerData = data;
 862 }
 863
 864 int XML_SetParamEntityParsing(XML_Parser parser,
 865                               enum XML_ParamEntityParsing parsing)
 866 {
 867 #ifdef XML_DTD
 868   paramEntityParsing = parsing;
 869   return 1;
 870 #else
 871   return parsing == XML_PARAM_ENTITY_PARSING_NEVER;
 872 #endif
 873 }
 874
 875 int XML_Parse(XML_Parser parser, const char *s, int len, int isFinal)
 876 {
 877   if (len == 0) {
 878     if (!isFinal)
 879       return 1;
 880     positionPtr = bufferPtr;
 881     errorCode = processor(parser, bufferPtr, parseEndPtr = bufferEnd, 0);
 882     if (errorCode == XML_ERROR_NONE)
 883       return 1;
 884     eventEndPtr = eventPtr;
 885     processor = errorProcessor;
 886     return 0;
 887   }
 888   else if (bufferPtr == bufferEnd) {
 889     const char *end;
 890     int nLeftOver;
 891     parseEndByteIndex += len;
 892     positionPtr = s;
 893     if (isFinal) {
 894       errorCode = processor(parser, s, parseEndPtr = s + len, 0);
 895       if (errorCode == XML_ERROR_NONE)
 896         return 1;
 897       eventEndPtr = eventPtr;
 898       processor = errorProcessor;
 899       return 0;
 900     }
 901     errorCode = processor(parser, s, parseEndPtr = s + len, &end);
 902     if (errorCode != XML_ERROR_NONE) {
 903       eventEndPtr = eventPtr;
 904       processor = errorProcessor;
 905       return 0;
 906     }
 907     XmlUpdatePosition(encoding, positionPtr, end, &position);
 908     nLeftOver = s + len - end;
 909     if (nLeftOver) {
 910       if (buffer == 0 || nLeftOver > bufferLim - buffer) {
 911         /* FIXME avoid integer overflow */
 912         buffer = buffer == 0 ? malloc(len * 2) : realloc(buffer, len * 2);
 913         /* FIXME storage leak if realloc fails */
 914         if (!buffer) {
 915           errorCode = XML_ERROR_NO_MEMORY;
 916           eventPtr = eventEndPtr = 0;
 917           processor = errorProcessor;
 918           return 0;
 919         }
 920         bufferLim = buffer + len * 2;
 921       }
 922       memcpy(buffer, end, nLeftOver);
 923       bufferPtr = buffer;
 924       bufferEnd = buffer + nLeftOver;
 925     }
 926     return 1;
 927   }
 928   else {
 929     memcpy(XML_GetBuffer(parser, len), s, len);
 930     return XML_ParseBuffer(parser, len, isFinal);
 931   }
 932 }
 933
 934 int XML_ParseBuffer(XML_Parser parser, int len, int isFinal)
 935 {
 936   const char *start = bufferPtr;
 937   positionPtr = start;
 938   bufferEnd += len;
 939   parseEndByteIndex += len;
 940   errorCode = processor(parser, start, parseEndPtr = bufferEnd,
 941                         isFinal ? (const char **)0 : &bufferPtr);
 942   if (errorCode == XML_ERROR_NONE) {
 943     if (!isFinal)
 944       XmlUpdatePosition(encoding, positionPtr, bufferPtr, &position);
 945     return 1;
 946   }
 947   else {
 948     eventEndPtr = eventPtr;
 949     processor = errorProcessor;
 950     return 0;
 951   }
 952 }
 953
 954 void *XML_GetBuffer(XML_Parser parser, int len)
 955 {
 956   if (len > bufferLim - bufferEnd) {
 957     /* FIXME avoid integer overflow */
 958     int neededSize = len + (bufferEnd - bufferPtr);
 959     if (neededSize  <= bufferLim - buffer) {
 960       memmove(buffer, bufferPtr, bufferEnd - bufferPtr);
 961       bufferEnd = buffer + (bufferEnd - bufferPtr);
 962       bufferPtr = buffer;
 963     }
 964     else {
 965       char *newBuf;
 966       int bufferSize = bufferLim - bufferPtr;
 967       if (bufferSize == 0)
 968         bufferSize = INIT_BUFFER_SIZE;
 969       do {
 970         bufferSize *= 2;
 971       } while (bufferSize < neededSize);
 972       newBuf = malloc(bufferSize);
 973       if (newBuf == 0) {
 974         errorCode = XML_ERROR_NO_MEMORY;
 975         return 0;
 976       }
 977       bufferLim = newBuf + bufferSize;
 978       if (bufferPtr) {
 979         memcpy(newBuf, bufferPtr, bufferEnd - bufferPtr);
 980         free(buffer);
 981       }
 982       bufferEnd = newBuf + (bufferEnd - bufferPtr);
 983       bufferPtr = buffer = newBuf;
 984     }
 985   }
 986   return bufferEnd;
 987 }
 988
 989 enum XML_Error XML_GetErrorCode(XML_Parser parser)
 990 {
 991   return errorCode;
 992 }
 993
 994 long XML_GetCurrentByteIndex(XML_Parser parser)
 995 {
 996   if (eventPtr)
 997     return parseEndByteIndex - (parseEndPtr - eventPtr);
 998   return -1;
 999 }
1000
1001 int XML_GetCurrentByteCount(XML_Parser parser)
1002 {
1003   if (eventEndPtr && eventPtr)
1004     return eventEndPtr - eventPtr;
1005   return 0;
1006 }
1007
1008 int XML_GetCurrentLineNumber(XML_Parser parser)
1009 {
1010   if (eventPtr) {
1011     XmlUpdatePosition(encoding, positionPtr, eventPtr, &position);
1012     positionPtr = eventPtr;
1013   }
1014   return position.lineNumber + 1;
1015 }
1016
1017 int XML_GetCurrentColumnNumber(XML_Parser parser)
1018 {
1019   if (eventPtr) {
1020     XmlUpdatePosition(encoding, positionPtr, eventPtr, &position);
1021     positionPtr = eventPtr;
1022   }
1023   return position.columnNumber;
1024 }
1025
1026 void XML_DefaultCurrent(XML_Parser parser)
1027 {
1028   if (defaultHandler) {
1029     if (openInternalEntities)
1030       reportDefault(parser,
1031                     internalEncoding,
1032                     openInternalEntities->internalEventPtr,
1033                     openInternalEntities->internalEventEndPtr);
1034     else
1035       reportDefault(parser, encoding, eventPtr, eventEndPtr);
1036   }
1037 }
1038
1039 const XML_LChar *XML_ErrorString(int code)
1040 {
1041   static const XML_LChar *message[] = {
1042     0,
1043     XML_T("out of memory"),
1044     XML_T("syntax error"),
1045     XML_T("no element found"),
1046     XML_T("not well-formed"),
1047     XML_T("unclosed token"),
1048     XML_T("unclosed token"),
1049     XML_T("mismatched tag"),
1050     XML_T("duplicate attribute"),
1051     XML_T("junk after document element"),
1052     XML_T("illegal parameter entity reference"),
1053     XML_T("undefined entity"),
1054     XML_T("recursive entity reference"),
1055     XML_T("asynchronous entity"),
1056     XML_T("reference to invalid character number"),
1057     XML_T("reference to binary entity"),
1058     XML_T("reference to external entity in attribute"),
1059     XML_T("xml processing instruction not at start of external entity"),
1060     XML_T("unknown encoding"),
1061     XML_T("encoding specified in XML declaration is incorrect"),
1062     XML_T("unclosed CDATA section"),
1063     XML_T("error in processing external entity reference"),
1064     XML_T("document is not standalone")
1065   };
1066   if (code > 0 && code < sizeof(message)/sizeof(message[0]))
1067     return message[code];
1068   return 0;
1069 }
1070
1071 static
1072 enum XML_Error contentProcessor(XML_Parser parser,
1073                                 const char *start,
1074                                 const char *end,
1075                                 const char **endPtr)
1076 {
1077   return doContent(parser, 0, encoding, start, end, endPtr);
1078 }
1079
1080 static
1081 enum XML_Error externalEntityInitProcessor(XML_Parser parser,
1082                                            const char *start,
1083                                            const char *end,
1084                                            const char **endPtr)
1085 {
1086   enum XML_Error result = initializeEncoding(parser);
1087   if (result != XML_ERROR_NONE)
1088     return result;
1089   processor = externalEntityInitProcessor2;
1090   return externalEntityInitProcessor2(parser, start, end, endPtr);
1091 }
1092
1093 static
1094 enum XML_Error externalEntityInitProcessor2(XML_Parser parser,
1095                                             const char *start,
1096                                             const char *end,
1097                                             const char **endPtr)
1098 {
1099   const char *next;
1100   int tok = XmlContentTok(encoding, start, end, &next);
1101   switch (tok) {
1102   case XML_TOK_BOM:
1103     start = next;
1104     break;
1105   case XML_TOK_PARTIAL:
1106     if (endPtr) {
1107       *endPtr = start;
1108       return XML_ERROR_NONE;
1109     }
1110     eventPtr = start;
1111     return XML_ERROR_UNCLOSED_TOKEN;
1112   case XML_TOK_PARTIAL_CHAR:
1113     if (endPtr) {
1114       *endPtr = start;
1115       return XML_ERROR_NONE;
1116     }
1117     eventPtr = start;
1118     return XML_ERROR_PARTIAL_CHAR;
1119   }
1120   processor = externalEntityInitProcessor3;
1121   return externalEntityInitProcessor3(parser, start, end, endPtr);
1122 }
1123
1124 static
1125 enum XML_Error externalEntityInitProcessor3(XML_Parser parser,
1126                                             const char *start,
1127                                             const char *end,
1128                                             const char **endPtr)
1129 {
1130   const char *next;
1131   int tok = XmlContentTok(encoding, start, end, &next);
1132   switch (tok) {
1133   case XML_TOK_XML_DECL:
1134     {
1135       enum XML_Error result = processXmlDecl(parser, 1, start, next);
1136       if (result != XML_ERROR_NONE)
1137         return result;
1138       start = next;
1139     }
1140     break;
1141   case XML_TOK_PARTIAL:
1142     if (endPtr) {
1143       *endPtr = start;
1144       return XML_ERROR_NONE;
1145     }
1146     eventPtr = start;
1147     return XML_ERROR_UNCLOSED_TOKEN;
1148   case XML_TOK_PARTIAL_CHAR:
1149     if (endPtr) {
1150       *endPtr = start;
1151       return XML_ERROR_NONE;
1152     }
1153     eventPtr = start;
1154     return XML_ERROR_PARTIAL_CHAR;
1155   }
1156   processor = externalEntityContentProcessor;
1157   tagLevel = 1;
1158   return doContent(parser, 1, encoding, start, end, endPtr);
1159 }
1160
1161 static
1162 enum XML_Error externalEntityContentProcessor(XML_Parser parser,
1163                                               const char *start,
1164                                               const char *end,
1165                                               const char **endPtr)
1166 {
1167   return doContent(parser, 1, encoding, start, end, endPtr);
1168 }
1169
1170 static enum XML_Error
1171 doContent(XML_Parser parser,
1172           int startTagLevel,
1173           const ENCODING *enc,
1174           const char *s,
1175           const char *end,
1176           const char **nextPtr)
1177 {
1178   const char **eventPP;
1179   const char **eventEndPP;
1180   if (enc == encoding) {
1181     eventPP = &eventPtr;
1182     eventEndPP = &eventEndPtr;
1183   }
1184   else {
1185     eventPP = &(openInternalEntities->internalEventPtr);
1186     eventEndPP = &(openInternalEntities->internalEventEndPtr);
1187   }
1188   *eventPP = s;
1189   for (;;) {
1190     const char *next = s; /* XmlContentTok doesn't always set the last arg */
1191     int tok = XmlContentTok(enc, s, end, &next);
1192     *eventEndPP = next;
1193     switch (tok) {
1194     case XML_TOK_TRAILING_CR:
1195       if (nextPtr) {
1196         *nextPtr = s;
1197         return XML_ERROR_NONE;
1198       }
1199       *eventEndPP = end;
1200       if (characterDataHandler) {
1201         XML_Char c = 0xA;
1202         characterDataHandler(handlerArg, &c, 1);
1203       }
1204       else if (defaultHandler)
1205         reportDefault(parser, enc, s, end);
1206       if (startTagLevel == 0)
1207         return XML_ERROR_NO_ELEMENTS;
1208       if (tagLevel != startTagLevel)
1209         return XML_ERROR_ASYNC_ENTITY;
1210       return XML_ERROR_NONE;
1211     case XML_TOK_NONE:
1212       if (nextPtr) {
1213         *nextPtr = s;
1214         return XML_ERROR_NONE;
1215       }
1216       if (startTagLevel > 0) {
1217         if (tagLevel != startTagLevel)
1218           return XML_ERROR_ASYNC_ENTITY;
1219         return XML_ERROR_NONE;
1220       }
1221       return XML_ERROR_NO_ELEMENTS;
1222     case XML_TOK_INVALID:
1223       *eventPP = next;
1224       return XML_ERROR_INVALID_TOKEN;
1225     case XML_TOK_PARTIAL:
1226       if (nextPtr) {
1227         *nextPtr = s;
1228         return XML_ERROR_NONE;
1229       }
1230       return XML_ERROR_UNCLOSED_TOKEN;
1231     case XML_TOK_PARTIAL_CHAR:
1232       if (nextPtr) {
1233         *nextPtr = s;
1234         return XML_ERROR_NONE;
1235       }
1236       return XML_ERROR_PARTIAL_CHAR;
1237     case XML_TOK_ENTITY_REF:
1238       {
1239         const XML_Char *name;
1240         ENTITY *entity;
1241         XML_Char ch = XmlPredefinedEntityName(enc,
1242                                               s + enc->minBytesPerChar,
1243                                               next - enc->minBytesPerChar);
1244         if (ch) {
1245           if (characterDataHandler)
1246             characterDataHandler(handlerArg, &ch, 1);
1247           else if (defaultHandler)
1248             reportDefault(parser, enc, s, next);
1249           break;
1250         }
1251         name = poolStoreString(&dtd.pool, enc,
1252                                 s + enc->minBytesPerChar,
1253                                 next - enc->minBytesPerChar);
1254         if (!name)
1255           return XML_ERROR_NO_MEMORY;
1256         entity = (ENTITY *)lookup(&dtd.generalEntities, name, 0);
1257         poolDiscard(&dtd.pool);
1258         if (!entity) {
1259           if (dtd.complete || dtd.standalone)
1260             return XML_ERROR_UNDEFINED_ENTITY;
1261           if (defaultHandler)
1262             reportDefault(parser, enc, s, next);
1263           break;
1264         }
1265         if (entity->open)
1266           return XML_ERROR_RECURSIVE_ENTITY_REF;
1267         if (entity->notation)
1268           return XML_ERROR_BINARY_ENTITY_REF;
1269         if (entity) {
1270           if (entity->textPtr) {
1271             enum XML_Error result;
1272             OPEN_INTERNAL_ENTITY openEntity;
1273             if (defaultHandler && !defaultExpandInternalEntities) {
1274               reportDefault(parser, enc, s, next);
1275               break;
1276             }
1277             entity->open = 1;
1278             openEntity.next = openInternalEntities;
1279             openInternalEntities = &openEntity;
1280             openEntity.entity = entity;
1281             openEntity.internalEventPtr = 0;
1282             openEntity.internalEventEndPtr = 0;
1283             result = doContent(parser,
1284                                tagLevel,
1285                                internalEncoding,
1286                                (char *)entity->textPtr,
1287                                (char *)(entity->textPtr + entity->textLen),
1288                                0);
1289             entity->open = 0;
1290             openInternalEntities = openEntity.next;
1291             if (result)
1292               return result;
1293           }
1294           else if (externalEntityRefHandler) {
1295             const XML_Char *context;
1296             entity->open = 1;
1297             context = getContext(parser);
1298             entity->open = 0;
1299             if (!context)
1300               return XML_ERROR_NO_MEMORY;
1301             if (!externalEntityRefHandler(externalEntityRefHandlerArg,
1302                                           context,
1303                                           entity->base,
1304                                           entity->systemId,
1305                                           entity->publicId))
1306               return XML_ERROR_EXTERNAL_ENTITY_HANDLING;
1307             poolDiscard(&tempPool);
1308           }
1309           else if (defaultHandler)
1310             reportDefault(parser, enc, s, next);
1311         }
1312         break;
1313       }
1314     case XML_TOK_START_TAG_WITH_ATTS:
1315       if (!startElementHandler) {
1316         enum XML_Error result = storeAtts(parser, enc, s, 0, 0);
1317         if (result)
1318           return result;
1319       }
1320       /* fall through */
1321     case XML_TOK_START_TAG_NO_ATTS:
1322       {
1323         TAG *tag;
1324         if (freeTagList) {
1325           tag = freeTagList;
1326           freeTagList = freeTagList->parent;
1327         }
1328         else {
1329           tag = malloc(sizeof(TAG));
1330           if (!tag)
1331             return XML_ERROR_NO_MEMORY;
1332           tag->buf = malloc(INIT_TAG_BUF_SIZE);
1333           if (!tag->buf)
1334             return XML_ERROR_NO_MEMORY;
1335           tag->bufEnd = tag->buf + INIT_TAG_BUF_SIZE;
1336         }
1337         tag->bindings = 0;
1338         tag->parent = tagStack;
1339         tagStack = tag;
1340         tag->name.localPart = 0;
1341         tag->rawName = s + enc->minBytesPerChar;
1342         tag->rawNameLength = XmlNameLength(enc, tag->rawName);
1343         if (nextPtr) {
1344           /* Need to guarantee that:
1345              tag->buf + ROUND_UP(tag->rawNameLength, sizeof(XML_Char)) <= tag->bufEnd - sizeof(XML_Char) */
1346           if (tag->rawNameLength + (int)(sizeof(XML_Char) - 1) + (int)sizeof(XML_Char) > tag->bufEnd - tag->buf) {
1347             int bufSize = tag->rawNameLength * 4;
1348             bufSize = ROUND_UP(bufSize, sizeof(XML_Char));
1349             tag->buf = realloc(tag->buf, bufSize);
1350             if (!tag->buf)
1351               return XML_ERROR_NO_MEMORY;
1352             tag->bufEnd = tag->buf + bufSize;
1353           }
1354           memcpy(tag->buf, tag->rawName, tag->rawNameLength);
1355           tag->rawName = tag->buf;
1356         }
1357         ++tagLevel;
1358         if (startElementHandler) {
1359           enum XML_Error result;
1360           XML_Char *toPtr;
1361           for (;;) {
1362             const char *rawNameEnd = tag->rawName + tag->rawNameLength;
1363             const char *fromPtr = tag->rawName;
1364             int bufSize;
1365             if (nextPtr)
1366               toPtr = (XML_Char *)(tag->buf + ROUND_UP(tag->rawNameLength, sizeof(XML_Char)));
1367             else
1368               toPtr = (XML_Char *)tag->buf;
1369             tag->name.str = toPtr;
1370             XmlConvert(enc,
1371                        &fromPtr, rawNameEnd,
1372                        (ICHAR **)&toPtr, (ICHAR *)tag->bufEnd - 1);
1373             if (fromPtr == rawNameEnd)
1374               break;
1375             bufSize = (tag->bufEnd - tag->buf) << 1;
1376             tag->buf = realloc(tag->buf, bufSize);
1377             if (!tag->buf)
1378               return XML_ERROR_NO_MEMORY;
1379             tag->bufEnd = tag->buf + bufSize;
1380             if (nextPtr)
1381               tag->rawName = tag->buf;
1382           }
1383           *toPtr = XML_T('\0');
1384           result = storeAtts(parser, enc, s, &(tag->name), &(tag->bindings));
1385           if (result)
1386             return result;
1387           startElementHandler(handlerArg, tag->name.str, (const XML_Char **)atts);
1388           poolClear(&tempPool);
1389         }
1390         else {
1391           tag->name.str = 0;
1392           if (defaultHandler)
1393             reportDefault(parser, enc, s, next);
1394         }
1395         break;
1396       }
1397     case XML_TOK_EMPTY_ELEMENT_WITH_ATTS:
1398       if (!startElementHandler) {
1399         enum XML_Error result = storeAtts(parser, enc, s, 0, 0);
1400         if (result)
1401           return result;
1402       }
1403       /* fall through */
1404     case XML_TOK_EMPTY_ELEMENT_NO_ATTS:
1405       if (startElementHandler || endElementHandler) {
1406         const char *rawName = s + enc->minBytesPerChar;
1407         enum XML_Error result;
1408         BINDING *bindings = 0;
1409         TAG_NAME name;
1410         name.str = poolStoreString(&tempPool, enc, rawName,
1411                                    rawName + XmlNameLength(enc, rawName));
1412         if (!name.str)
1413           return XML_ERROR_NO_MEMORY;
1414         poolFinish(&tempPool);
1415         result = storeAtts(parser, enc, s, &name, &bindings);
1416         if (result)
1417           return result;
1418         poolFinish(&tempPool);
1419         if (startElementHandler)
1420           startElementHandler(handlerArg, name.str, (const XML_Char **)atts);
1421         if (endElementHandler) {
1422           if (startElementHandler)
1423             *eventPP = *eventEndPP;
1424           endElementHandler(handlerArg, name.str);
1425         }
1426         poolClear(&tempPool);
1427         while (bindings) {
1428           BINDING *b = bindings;
1429           if (endNamespaceDeclHandler)
1430             endNamespaceDeclHandler(handlerArg, b->prefix->name);
1431           bindings = bindings->nextTagBinding;
1432           b->nextTagBinding = freeBindingList;
1433           freeBindingList = b;
1434           b->prefix->binding = b->prevPrefixBinding;
1435         }
1436       }
1437       else if (defaultHandler)
1438         reportDefault(parser, enc, s, next);
1439       if (tagLevel == 0)
1440         return epilogProcessor(parser, next, end, nextPtr);
1441       break;
1442     case XML_TOK_END_TAG:
1443       if (tagLevel == startTagLevel)
1444         return XML_ERROR_ASYNC_ENTITY;
1445       else {
1446         int len;
1447         const char *rawName;
1448         TAG *tag = tagStack;
1449         tagStack = tag->parent;
1450         tag->parent = freeTagList;
1451         freeTagList = tag;
1452         rawName = s + enc->minBytesPerChar*2;
1453         len = XmlNameLength(enc, rawName);
1454         if (len != tag->rawNameLength
1455             || memcmp(tag->rawName, rawName, len) != 0) {
1456           *eventPP = rawName;
1457           return XML_ERROR_TAG_MISMATCH;
1458         }
1459         --tagLevel;
1460         if (endElementHandler && tag->name.str) {
1461           if (tag->name.localPart) {
1462             XML_Char *to = (XML_Char *)tag->name.str + tag->name.uriLen;
1463             const XML_Char *from = tag->name.localPart;
1464             while ((*to++ = *from++) != 0)
1465               ;
1466           }
1467           endElementHandler(handlerArg, tag->name.str);
1468         }
1469         else if (defaultHandler)
1470           reportDefault(parser, enc, s, next);
1471         while (tag->bindings) {
1472           BINDING *b = tag->bindings;
1473           if (endNamespaceDeclHandler)
1474             endNamespaceDeclHandler(handlerArg, b->prefix->name);
1475           tag->bindings = tag->bindings->nextTagBinding;
1476           b->nextTagBinding = freeBindingList;
1477           freeBindingList = b;
1478           b->prefix->binding = b->prevPrefixBinding;
1479         }
1480         if (tagLevel == 0)
1481           return epilogProcessor(parser, next, end, nextPtr);
1482       }
1483       break;
1484     case XML_TOK_CHAR_REF:
1485       {
1486         int n = XmlCharRefNumber(enc, s);
1487         if (n < 0)
1488           return XML_ERROR_BAD_CHAR_REF;
1489         if (characterDataHandler) {
1490           XML_Char buf[XML_ENCODE_MAX];
1491           characterDataHandler(handlerArg, buf, XmlEncode(n, (ICHAR *)buf));
1492         }
1493         else if (defaultHandler)
1494           reportDefault(parser, enc, s, next);
1495       }
1496       break;
1497     case XML_TOK_XML_DECL:
1498       return XML_ERROR_MISPLACED_XML_PI;
1499     case XML_TOK_DATA_NEWLINE:
1500       if (characterDataHandler) {
1501         XML_Char c = 0xA;
1502         characterDataHandler(handlerArg, &c, 1);
1503       }
1504       else if (defaultHandler)
1505         reportDefault(parser, enc, s, next);
1506       break;
1507     case XML_TOK_CDATA_SECT_OPEN:
1508       {
1509         enum XML_Error result;
1510         if (startCdataSectionHandler)
1511           startCdataSectionHandler(handlerArg);
1512 #if 0
1513         /* Suppose you doing a transformation on a document that involves
1514            changing only the character data.  You set up a defaultHandler
1515            and a characterDataHandler.  The defaultHandler simply copies
1516            characters through.  The characterDataHandler does the transformation
1517            and writes the characters out escaping them as necessary.  This case
1518            will fail to work if we leave out the following two lines (because &
1519            and < inside CDATA sections will be incorrectly escaped).
1520
1521            However, now we have a start/endCdataSectionHandler, so it seems
1522            easier to let the user deal with this. */
1523
1524         else if (characterDataHandler)
1525           characterDataHandler(handlerArg, dataBuf, 0);
1526 #endif
1527         else if (defaultHandler)
1528           reportDefault(parser, enc, s, next);
1529         result = doCdataSection(parser, enc, &next, end, nextPtr);
1530         if (!next) {
1531           processor = cdataSectionProcessor;
1532           return result;
1533         }
1534       }
1535       break;
1536     case XML_TOK_TRAILING_RSQB:
1537       if (nextPtr) {
1538         *nextPtr = s;
1539         return XML_ERROR_NONE;
1540       }
1541       if (characterDataHandler) {
1542         if (MUST_CONVERT(enc, s)) {
1543           ICHAR *dataPtr = (ICHAR *)dataBuf;
1544           XmlConvert(enc, &s, end, &dataPtr, (ICHAR *)dataBufEnd);
1545           characterDataHandler(handlerArg, dataBuf, dataPtr - (ICHAR *)dataBuf);
1546         }
1547         else
1548           characterDataHandler(handlerArg,
1549                                (XML_Char *)s,
1550                                (XML_Char *)end - (XML_Char *)s);
1551       }
1552       else if (defaultHandler)
1553         reportDefault(parser, enc, s, end);
1554       if (startTagLevel == 0) {
1555         *eventPP = end;
1556         return XML_ERROR_NO_ELEMENTS;
1557       }
1558       if (tagLevel != startTagLevel) {
1559         *eventPP = end;
1560         return XML_ERROR_ASYNC_ENTITY;
1561       }
1562       return XML_ERROR_NONE;
1563     case XML_TOK_DATA_CHARS:
1564       if (characterDataHandler) {
1565         if (MUST_CONVERT(enc, s)) {
1566           for (;;) {
1567             ICHAR *dataPtr = (ICHAR *)dataBuf;
1568             XmlConvert(enc, &s, next, &dataPtr, (ICHAR *)dataBufEnd);
1569             *eventEndPP = s;
1570             characterDataHandler(handlerArg, dataBuf, dataPtr - (ICHAR *)dataBuf);
1571             if (s == next)
1572               break;
1573             *eventPP = s;
1574           }
1575         }
1576         else
1577           characterDataHandler(handlerArg,
1578                                (XML_Char *)s,
1579                                (XML_Char *)next - (XML_Char *)s);
1580       }
1581       else if (defaultHandler)
1582         reportDefault(parser, enc, s, next);
1583       break;
1584     case XML_TOK_PI:
1585       if (!reportProcessingInstruction(parser, enc, s, next))
1586         return XML_ERROR_NO_MEMORY;
1587       break;
1588     case XML_TOK_COMMENT:
1589       if (!reportComment(parser, enc, s, next))
1590         return XML_ERROR_NO_MEMORY;
1591       break;
1592     default:
1593       if (defaultHandler)
1594         reportDefault(parser, enc, s, next);
1595       break;
1596     }
1597     *eventPP = s = next;
1598   }
1599   /* not reached */
1600 }
1601
1602 /* If tagNamePtr is non-null, build a real list of attributes,
1603 otherwise just check the attributes for well-formedness. */
1604
1605 static enum XML_Error storeAtts(XML_Parser parser, const ENCODING *enc,
1606                                 const char *attStr, TAG_NAME *tagNamePtr,
1607                                 BINDING **bindingsPtr)
1608 {
1609   ELEMENT_TYPE *elementType = 0;
1610   int nDefaultAtts = 0;
1611   const XML_Char **appAtts;   /* the attribute list to pass to the application */
1612   int attIndex = 0;
1613   int i;
1614   int n;
1615   int nPrefixes = 0;
1616   BINDING *binding;
1617   const XML_Char *localPart;
1618
1619   /* lookup the element type name */
1620   if (tagNamePtr) {
1621     elementType = (ELEMENT_TYPE *)lookup(&dtd.elementTypes, tagNamePtr->str, 0);
1622     if (!elementType) {
1623       tagNamePtr->str = poolCopyString(&dtd.pool, tagNamePtr->str);
1624       if (!tagNamePtr->str)
1625         return XML_ERROR_NO_MEMORY;
1626       elementType = (ELEMENT_TYPE *)lookup(&dtd.elementTypes, tagNamePtr->str, sizeof(ELEMENT_TYPE));
1627       if (!elementType)
1628         return XML_ERROR_NO_MEMORY;
1629       if (ns && !setElementTypePrefix(parser, elementType))
1630         return XML_ERROR_NO_MEMORY;
1631     }
1632     nDefaultAtts = elementType->nDefaultAtts;
1633   }
1634   /* get the attributes from the tokenizer */
1635   n = XmlGetAttributes(enc, attStr, attsSize, atts);
1636   if (n + nDefaultAtts > attsSize) {
1637     int oldAttsSize = attsSize;
1638     attsSize = n + nDefaultAtts + INIT_ATTS_SIZE;
1639     atts = realloc((void *)atts, attsSize * sizeof(ATTRIBUTE));
1640     if (!atts)
1641       return XML_ERROR_NO_MEMORY;
1642     if (n > oldAttsSize)
1643       XmlGetAttributes(enc, attStr, n, atts);
1644   }
1645   appAtts = (const XML_Char **)atts;
1646   for (i = 0; i < n; i++) {
1647     /* add the name and value to the attribute list */
1648     ATTRIBUTE_ID *attId = getAttributeId(parser, enc, atts[i].name,
1649                                          atts[i].name
1650                                          + XmlNameLength(enc, atts[i].name));
1651     if (!attId)
1652       return XML_ERROR_NO_MEMORY;
1653     /* detect duplicate attributes */
1654     if ((attId->name)[-1]) {
1655       if (enc == encoding)
1656         eventPtr = atts[i].name;
1657       return XML_ERROR_DUPLICATE_ATTRIBUTE;
1658     }
1659     (attId->name)[-1] = 1;
1660     appAtts[attIndex++] = attId->name;
1661     if (!atts[i].normalized) {
1662       enum XML_Error result;
1663       int isCdata = 1;
1664
1665       /* figure out whether declared as other than CDATA */
1666       if (attId->maybeTokenized) {
1667         int j;
1668         for (j = 0; j < nDefaultAtts; j++) {
1669           if (attId == elementType->defaultAtts[j].id) {
1670             isCdata = elementType->defaultAtts[j].isCdata;
1671             break;
1672           }
1673         }
1674       }
1675
1676       /* normalize the attribute value */
1677       result = storeAttributeValue(parser, enc, isCdata,
1678                                    atts[i].valuePtr, atts[i].valueEnd,
1679                                    &tempPool);
1680       if (result)
1681         return result;
1682       if (tagNamePtr) {
1683         appAtts[attIndex] = poolStart(&tempPool);
1684         poolFinish(&tempPool);
1685       }
1686       else
1687         poolDiscard(&tempPool);
1688     }
1689     else if (tagNamePtr) {
1690       /* the value did not need normalizing */
1691       appAtts[attIndex] = poolStoreString(&tempPool, enc, atts[i].valuePtr, atts[i].valueEnd);
1692       if (appAtts[attIndex] == 0)
1693         return XML_ERROR_NO_MEMORY;
1694       poolFinish(&tempPool);
1695     }
1696     /* handle prefixed attribute names */
1697     if (attId->prefix && tagNamePtr) {
1698       if (attId->xmlns) {
1699         /* deal with namespace declarations here */
1700         if (!addBinding(parser, attId->prefix, attId, appAtts[attIndex], bindingsPtr))
1701           return XML_ERROR_NO_MEMORY;
1702         --attIndex;
1703       }
1704       else {
1705         /* deal with other prefixed names later */
1706         attIndex++;
1707         nPrefixes++;
1708         (attId->name)[-1] = 2;
1709       }
1710     }
1711     else
1712       attIndex++;
1713   }
1714   if (tagNamePtr) {
1715     int j;
1716     nSpecifiedAtts = attIndex;
1717     if (elementType->idAtt && (elementType->idAtt->name)[-1]) {
1718       for (i = 0; i < attIndex; i += 2)
1719         if (appAtts[i] == elementType->idAtt->name) {
1720           idAttIndex = i;
1721           break;
1722         }
1723     }
1724     else
1725       idAttIndex = -1;
1726     /* do attribute defaulting */
1727     for (j = 0; j < nDefaultAtts; j++) {
1728       const DEFAULT_ATTRIBUTE *da = elementType->defaultAtts + j;
1729       if (!(da->id->name)[-1] && da->value) {
1730         if (da->id->prefix) {
1731           if (da->id->xmlns) {
1732             if (!addBinding(parser, da->id->prefix, da->id, da->value, bindingsPtr))
1733               return XML_ERROR_NO_MEMORY;
1734           }
1735           else {
1736             (da->id->name)[-1] = 2;
1737             nPrefixes++;
1738             appAtts[attIndex++] = da->id->name;
1739             appAtts[attIndex++] = da->value;
1740           }
1741         }
1742         else {
1743           (da->id->name)[-1] = 1;
1744           appAtts[attIndex++] = da->id->name;
1745           appAtts[attIndex++] = da->value;
1746         }
1747       }
1748     }
1749     appAtts[attIndex] = 0;
1750   }
1751   i = 0;
1752   if (nPrefixes) {
1753     /* expand prefixed attribute names */
1754     for (; i < attIndex; i += 2) {
1755       if (appAtts[i][-1] == 2) {
1756         ATTRIBUTE_ID *id;
1757         ((XML_Char *)(appAtts[i]))[-1] = 0;
1758         id = (ATTRIBUTE_ID *)lookup(&dtd.attributeIds, appAtts[i], 0);
1759         if (id->prefix->binding) {
1760           int j;
1761           const BINDING *b = id->prefix->binding;
1762           const XML_Char *s = appAtts[i];
1763           for (j = 0; j < b->uriLen; j++) {
1764             if (!poolAppendChar(&tempPool, b->uri[j]))
1765               return XML_ERROR_NO_MEMORY;
1766           }
1767           while (*s++ != ':')
1768             ;
1769           do {
1770             if (!poolAppendChar(&tempPool, *s))
1771               return XML_ERROR_NO_MEMORY;
1772           } while (*s++);
1773           appAtts[i] = poolStart(&tempPool);
1774           poolFinish(&tempPool);
1775         }
1776         if (!--nPrefixes)
1777           break;
1778       }
1779       else
1780         ((XML_Char *)(appAtts[i]))[-1] = 0;
1781     }
1782   }
1783   /* clear the flags that say whether attributes were specified */
1784   for (; i < attIndex; i += 2)
1785     ((XML_Char *)(appAtts[i]))[-1] = 0;
1786   if (!tagNamePtr)
1787     return XML_ERROR_NONE;
1788   for (binding = *bindingsPtr; binding; binding = binding->nextTagBinding)
1789     binding->attId->name[-1] = 0;
1790   /* expand the element type name */
1791   if (elementType->prefix) {
1792     binding = elementType->prefix->binding;
1793     if (!binding)
1794       return XML_ERROR_NONE;
1795     localPart = tagNamePtr->str;
1796     while (*localPart++ != XML_T(':'))
1797       ;
1798   }
1799   else if (dtd.defaultPrefix.binding) {
1800     binding = dtd.defaultPrefix.binding;
1801     localPart = tagNamePtr->str;
1802   }
1803   else
1804     return XML_ERROR_NONE;
1805   tagNamePtr->localPart = localPart;
1806   tagNamePtr->uriLen = binding->uriLen;
1807   for (i = 0; localPart[i++];)
1808     ;
1809   n = i + binding->uriLen;
1810   if (n > binding->uriAlloc) {
1811     TAG *p;
1812     XML_Char *uri = malloc((n + EXPAND_SPARE) * sizeof(XML_Char));
1813     if (!uri)
1814       return XML_ERROR_NO_MEMORY;
1815     binding->uriAlloc = n + EXPAND_SPARE;
1816     memcpy(uri, binding->uri, binding->uriLen * sizeof(XML_Char));
1817     for (p = tagStack; p; p = p->parent)
1818       if (p->name.str == binding->uri)
1819         p->name.str = uri;
1820     free(binding->uri);
1821     binding->uri = uri;
1822   }
1823   memcpy(binding->uri + binding->uriLen, localPart, i * sizeof(XML_Char));
1824   tagNamePtr->str = binding->uri;
1825   return XML_ERROR_NONE;
1826 }
1827
1828 static
1829 int addBinding(XML_Parser parser, PREFIX *prefix, const ATTRIBUTE_ID *attId, const XML_Char *uri, BINDING **bindingsPtr)
1830 {
1831   BINDING *b;
1832   int len;
1833   for (len = 0; uri[len]; len++)
1834     ;
1835   if (namespaceSeparator)
1836     len++;
1837   if (freeBindingList) {
1838     b = freeBindingList;
1839     if (len > b->uriAlloc) {
1840       b->uri = realloc(b->uri, sizeof(XML_Char) * (len + EXPAND_SPARE));
1841       if (!b->uri)
1842         return 0;
1843       b->uriAlloc = len + EXPAND_SPARE;
1844     }
1845     freeBindingList = b->nextTagBinding;
1846   }
1847   else {
1848     b = malloc(sizeof(BINDING));
1849     if (!b)
1850       return 0;
1851     b->uri = malloc(sizeof(XML_Char) * (len + EXPAND_SPARE));
1852     if (!b->uri) {
1853       free(b);
1854       return 0;
1855     }
1856     b->uriAlloc = len + EXPAND_SPARE;
1857   }
1858   b->uriLen = len;
1859   memcpy(b->uri, uri, len * sizeof(XML_Char));
1860   if (namespaceSeparator)
1861     b->uri[len - 1] = namespaceSeparator;
1862   b->prefix = prefix;
1863   b->attId = attId;
1864   b->prevPrefixBinding = prefix->binding;
1865   if (*uri == XML_T('\0') && prefix == &dtd.defaultPrefix)
1866     prefix->binding = 0;
1867   else
1868     prefix->binding = b;
1869   b->nextTagBinding = *bindingsPtr;
1870   *bindingsPtr = b;
1871   if (startNamespaceDeclHandler)
1872     startNamespaceDeclHandler(handlerArg, prefix->name,
1873                               prefix->binding ? uri : 0);
1874   return 1;
1875 }
1876
1877 /* The idea here is to avoid using stack for each CDATA section when
1878 the whole file is parsed with one call. */
1879
1880 static
1881 enum XML_Error cdataSectionProcessor(XML_Parser parser,
1882                                      const char *start,
1883                                      const char *end,
1884                                      const char **endPtr)
1885 {
1886   enum XML_Error result = doCdataSection(parser, encoding, &start, end, endPtr);
1887   if (start) {
1888     processor = contentProcessor;
1889     return contentProcessor(parser, start, end, endPtr);
1890   }
1891   return result;
1892 }
1893
1894 /* startPtr gets set to non-null is the section is closed, and to null if
1895 the section is not yet closed. */
1896
1897 static
1898 enum XML_Error doCdataSection(XML_Parser parser,
1899                               const ENCODING *enc,
1900                               const char **startPtr,
1901                               const char *end,
1902                               const char **nextPtr)
1903 {
1904   const char *s = *startPtr;
1905   const char **eventPP;
1906   const char **eventEndPP;
1907   if (enc == encoding) {
1908     eventPP = &eventPtr;
1909     *eventPP = s;
1910     eventEndPP = &eventEndPtr;
1911   }
1912   else {
1913     eventPP = &(openInternalEntities->internalEventPtr);
1914     eventEndPP = &(openInternalEntities->internalEventEndPtr);
1915   }
1916   *eventPP = s;
1917   *startPtr = 0;
1918   for (;;) {
1919     const char *next;
1920     int tok = XmlCdataSectionTok(enc, s, end, &next);
1921     *eventEndPP = next;
1922     switch (tok) {
1923     case XML_TOK_CDATA_SECT_CLOSE:
1924       if (endCdataSectionHandler)
1925         endCdataSectionHandler(handlerArg);
1926 #if 0
1927       /* see comment under XML_TOK_CDATA_SECT_OPEN */
1928       else if (characterDataHandler)
1929         characterDataHandler(handlerArg, dataBuf, 0);
1930 #endif
1931       else if (defaultHandler)
1932         reportDefault(parser, enc, s, next);
1933       *startPtr = next;
1934       return XML_ERROR_NONE;
1935     case XML_TOK_DATA_NEWLINE:
1936       if (characterDataHandler) {
1937         XML_Char c = 0xA;
1938         characterDataHandler(handlerArg, &c, 1);
1939       }
1940       else if (defaultHandler)
1941         reportDefault(parser, enc, s, next);
1942       break;
1943     case XML_TOK_DATA_CHARS:
1944       if (characterDataHandler) {
1945         if (MUST_CONVERT(enc, s)) {
1946           for (;;) {
1947             ICHAR *dataPtr = (ICHAR *)dataBuf;
1948             XmlConvert(enc, &s, next, &dataPtr, (ICHAR *)dataBufEnd);
1949             *eventEndPP = next;
1950             characterDataHandler(handlerArg, dataBuf, dataPtr - (ICHAR *)dataBuf);
1951             if (s == next)
1952               break;
1953             *eventPP = s;
1954           }
1955         }
1956         else
1957           characterDataHandler(handlerArg,
1958                                (XML_Char *)s,
1959                                (XML_Char *)next - (XML_Char *)s);
1960       }
1961       else if (defaultHandler)
1962         reportDefault(parser, enc, s, next);
1963       break;
1964     case XML_TOK_INVALID:
1965       *eventPP = next;
1966       return XML_ERROR_INVALID_TOKEN;
1967     case XML_TOK_PARTIAL_CHAR:
1968       if (nextPtr) {
1969         *nextPtr = s;
1970         return XML_ERROR_NONE;
1971       }
1972       return XML_ERROR_PARTIAL_CHAR;
1973     case XML_TOK_PARTIAL:
1974     case XML_TOK_NONE:
1975       if (nextPtr) {
1976         *nextPtr = s;
1977         return XML_ERROR_NONE;
1978       }
1979       return XML_ERROR_UNCLOSED_CDATA_SECTION;
1980     default:
1981       abort();
1982     }
1983     *eventPP = s = next;
1984   }
1985   /* not reached */
1986 }
1987
1988 #ifdef XML_DTD
1989
1990 /* The idea here is to avoid using stack for each IGNORE section when
1991 the whole file is parsed with one call. */
1992
1993 static
1994 enum XML_Error ignoreSectionProcessor(XML_Parser parser,
1995                                       const char *start,
1996                                       const char *end,
1997                                       const char **endPtr)
1998 {
1999   enum XML_Error result = doIgnoreSection(parser, encoding, &start, end, endPtr);
2000   if (start) {
2001     processor = prologProcessor;
2002     return prologProcessor(parser, start, end, endPtr);
2003   }
2004   return result;
2005 }
2006
2007 /* startPtr gets set to non-null is the section is closed, and to null if
2008 the section is not yet closed. */
2009
2010 static
2011 enum XML_Error doIgnoreSection(XML_Parser parser,
2012                                const ENCODING *enc,
2013                                const char **startPtr,
2014                                const char *end,
2015                                const char **nextPtr)
2016 {
2017   const char *next;
2018   int tok;
2019   const char *s = *startPtr;
2020   const char **eventPP;
2021   const char **eventEndPP;
2022   if (enc == encoding) {
2023     eventPP = &eventPtr;
2024     *eventPP = s;
2025     eventEndPP = &eventEndPtr;
2026   }
2027   else {
2028     eventPP = &(openInternalEntities->internalEventPtr);
2029     eventEndPP = &(openInternalEntities->internalEventEndPtr);
2030   }
2031   *eventPP = s;
2032   *startPtr = 0;
2033   tok = XmlIgnoreSectionTok(enc, s, end, &next);
2034   *eventEndPP = next;
2035   switch (tok) {
2036   case XML_TOK_IGNORE_SECT:
2037     if (defaultHandler)
2038       reportDefault(parser, enc, s, next);
2039     *startPtr = next;
2040     return XML_ERROR_NONE;
2041   case XML_TOK_INVALID:
2042     *eventPP = next;
2043     return XML_ERROR_INVALID_TOKEN;
2044   case XML_TOK_PARTIAL_CHAR:
2045     if (nextPtr) {
2046       *nextPtr = s;
2047       return XML_ERROR_NONE;
2048     }
2049     return XML_ERROR_PARTIAL_CHAR;
2050   case XML_TOK_PARTIAL:
2051   case XML_TOK_NONE:
2052     if (nextPtr) {
2053       *nextPtr = s;
2054       return XML_ERROR_NONE;
2055     }
2056     return XML_ERROR_SYNTAX; /* XML_ERROR_UNCLOSED_IGNORE_SECTION */
2057   default:
2058     abort();
2059   }
2060   /* not reached */
2061 }
2062
2063 #endif /* XML_DTD */
2064
2065 static enum XML_Error
2066 initializeEncoding(XML_Parser parser)
2067 {
2068   const char *s;
2069 #ifdef XML_UNICODE
2070   char encodingBuf[128];
2071   if (!protocolEncodingName)
2072     s = 0;
2073   else {
2074     int i;
2075     for (i = 0; protocolEncodingName[i]; i++) {
2076       if (i == sizeof(encodingBuf) - 1
2077           || (protocolEncodingName[i] & ~0x7f) != 0) {
2078         encodingBuf[0] = '\0';
2079         break;
2080       }
2081       encodingBuf[i] = (char)protocolEncodingName[i];
2082     }
2083     encodingBuf[i] = '\0';
2084     s = encodingBuf;
2085   }
2086 #else
2087   s = protocolEncodingName;
2088 #endif
2089   if ((ns ? XmlInitEncodingNS : XmlInitEncoding)(&initEncoding, &encoding, s))
2090     return XML_ERROR_NONE;
2091   return handleUnknownEncoding(parser, protocolEncodingName);
2092 }
2093
2094 static enum XML_Error
2095 processXmlDecl(XML_Parser parser, int isGeneralTextEntity,
2096                const char *s, const char *next)
2097 {
2098   const char *encodingName = 0;
2099   const ENCODING *newEncoding = 0;
2100   const char *version;
2101   int standalone = -1;
2102   if (!(ns
2103         ? XmlParseXmlDeclNS
2104         : XmlParseXmlDecl)(isGeneralTextEntity,
2105                            encoding,
2106                            s,
2107                            next,
2108                            &eventPtr,
2109                            &version,
2110                            &encodingName,
2111                            &newEncoding,
2112                            &standalone))
2113     return XML_ERROR_SYNTAX;
2114   if (!isGeneralTextEntity && standalone == 1) {
2115     dtd.standalone = 1;
2116 #ifdef XML_DTD
2117     if (paramEntityParsing == XML_PARAM_ENTITY_PARSING_UNLESS_STANDALONE)
2118       paramEntityParsing = XML_PARAM_ENTITY_PARSING_NEVER;
2119 #endif /* XML_DTD */
2120   }
2121   if (defaultHandler)
2122     reportDefault(parser, encoding, s, next);
2123   if (!protocolEncodingName) {
2124     if (newEncoding) {
2125       if (newEncoding->minBytesPerChar != encoding->minBytesPerChar) {
2126         eventPtr = encodingName;
2127         return XML_ERROR_INCORRECT_ENCODING;
2128       }
2129       encoding = newEncoding;
2130     }
2131     else if (encodingName) {
2132       enum XML_Error result;
2133       const XML_Char *s = poolStoreString(&tempPool,
2134                                           encoding,
2135                                           encodingName,
2136                                           encodingName
2137                                           + XmlNameLength(encoding, encodingName));
2138       if (!s)
2139         return XML_ERROR_NO_MEMORY;
2140       result = handleUnknownEncoding(parser, s);
2141       poolDiscard(&tempPool);
2142       if (result == XML_ERROR_UNKNOWN_ENCODING)
2143         eventPtr = encodingName;
2144       return result;
2145     }
2146   }
2147   return XML_ERROR_NONE;
2148 }
2149
2150 static enum XML_Error
2151 handleUnknownEncoding(XML_Parser parser, const XML_Char *encodingName)
2152 {
2153   if (unknownEncodingHandler) {
2154     XML_Encoding info;
2155     int i;
2156     for (i = 0; i < 256; i++)
2157       info.map[i] = -1;
2158     info.convert = 0;
2159     info.data = 0;
2160     info.release = 0;
2161     if (unknownEncodingHandler(unknownEncodingHandlerData, encodingName, &info)) {
2162       ENCODING *enc;
2163       unknownEncodingMem = malloc(XmlSizeOfUnknownEncoding());
2164       if (!unknownEncodingMem) {
2165         if (info.release)
2166           info.release(info.data);
2167         return XML_ERROR_NO_MEMORY;
2168       }
2169       enc = (ns
2170              ? XmlInitUnknownEncodingNS
2171              : XmlInitUnknownEncoding)(unknownEncodingMem,
2172                                        info.map,
2173                                        info.convert,
2174                                        info.data);
2175       if (enc) {
2176         unknownEncodingData = info.data;
2177         unknownEncodingRelease = info.release;
2178         encoding = enc;
2179         return XML_ERROR_NONE;
2180       }
2181     }
2182     if (info.release)
2183       info.release(info.data);
2184   }
2185   return XML_ERROR_UNKNOWN_ENCODING;
2186 }
2187
2188 static enum XML_Error
2189 prologInitProcessor(XML_Parser parser,
2190                     const char *s,
2191                     const char *end,
2192                     const char **nextPtr)
2193 {
2194   enum XML_Error result = initializeEncoding(parser);
2195   if (result != XML_ERROR_NONE)
2196     return result;
2197   processor = prologProcessor;
2198   return prologProcessor(parser, s, end, nextPtr);
2199 }
2200
2201 static enum XML_Error
2202 prologProcessor(XML_Parser parser,
2203                 const char *s,
2204                 const char *end,
2205                 const char **nextPtr)
2206 {
2207   const char *next;
2208   int tok = XmlPrologTok(encoding, s, end, &next);
2209   return doProlog(parser, encoding, s, end, tok, next, nextPtr);
2210 }
2211
2212 static enum XML_Error
2213 doProlog(XML_Parser parser,
2214          const ENCODING *enc,
2215          const char *s,
2216          const char *end,
2217          int tok,
2218          const char *next,
2219          const char **nextPtr)
2220 {
2221 #ifdef XML_DTD
2222   static const XML_Char externalSubsetName[] = { '#' , '\0' };
2223 #endif /* XML_DTD */
2224
2225   const char **eventPP;
2226   const char **eventEndPP;
2227   if (enc == encoding) {
2228     eventPP = &eventPtr;
2229     eventEndPP = &eventEndPtr;
2230   }
2231   else {
2232     eventPP = &(openInternalEntities->internalEventPtr);
2233     eventEndPP = &(openInternalEntities->internalEventEndPtr);
2234   }
2235   for (;;) {
2236     int role;
2237     *eventPP = s;
2238     *eventEndPP = next;
2239     if (tok <= 0) {
2240       if (nextPtr != 0 && tok != XML_TOK_INVALID) {
2241         *nextPtr = s;
2242         return XML_ERROR_NONE;
2243       }
2244       switch (tok) {
2245       case XML_TOK_INVALID:
2246         *eventPP = next;
2247         return XML_ERROR_INVALID_TOKEN;
2248       case XML_TOK_PARTIAL:
2249         return XML_ERROR_UNCLOSED_TOKEN;
2250       case XML_TOK_PARTIAL_CHAR:
2251         return XML_ERROR_PARTIAL_CHAR;
2252       case XML_TOK_NONE:
2253 #ifdef XML_DTD
2254         if (enc != encoding)
2255           return XML_ERROR_NONE;
2256         if (parentParser) {
2257           if (XmlTokenRole(&prologState, XML_TOK_NONE, end, end, enc)
2258               == XML_ROLE_ERROR)
2259             return XML_ERROR_SYNTAX;
2260           hadExternalDoctype = 0;
2261           return XML_ERROR_NONE;
2262         }
2263 #endif /* XML_DTD */
2264         return XML_ERROR_NO_ELEMENTS;
2265       default:
2266         tok = -tok;
2267         next = end;
2268         break;
2269       }
2270     }
2271     role = XmlTokenRole(&prologState, tok, s, next, enc);
2272     switch (role) {
2273     case XML_ROLE_XML_DECL:
2274       {
2275         enum XML_Error result = processXmlDecl(parser, 0, s, next);
2276         if (result != XML_ERROR_NONE)
2277           return result;
2278         enc = encoding;
2279       }
2280       break;
2281     case XML_ROLE_DOCTYPE_NAME:
2282       if (startDoctypeDeclHandler) {
2283         const XML_Char *name = poolStoreString(&tempPool, enc, s, next);
2284         if (!name)
2285           return XML_ERROR_NO_MEMORY;
2286         startDoctypeDeclHandler(handlerArg, name);
2287         poolClear(&tempPool);
2288       }
2289       break;
2290 #ifdef XML_DTD
2291     case XML_ROLE_TEXT_DECL:
2292       {
2293         enum XML_Error result = processXmlDecl(parser, 1, s, next);
2294         if (result != XML_ERROR_NONE)
2295           return result;
2296         enc = encoding;
2297       }
2298       break;
2299 #endif /* XML_DTD */
2300     case XML_ROLE_DOCTYPE_PUBLIC_ID:
2301 #ifdef XML_DTD
2302       declEntity = (ENTITY *)lookup(&dtd.paramEntities,
2303                                     externalSubsetName,
2304                                     sizeof(ENTITY));
2305       if (!declEntity)
2306         return XML_ERROR_NO_MEMORY;
2307 #endif /* XML_DTD */
2308       /* fall through */
2309     case XML_ROLE_ENTITY_PUBLIC_ID:
2310       if (!XmlIsPublicId(enc, s, next, eventPP))
2311         return XML_ERROR_SYNTAX;
2312       if (declEntity) {
2313         XML_Char *tem = poolStoreString(&dtd.pool,
2314                                         enc,
2315                                         s + enc->minBytesPerChar,
2316                                         next - enc->minBytesPerChar);
2317         if (!tem)
2318           return XML_ERROR_NO_MEMORY;
2319         normalizePublicId(tem);
2320         declEntity->publicId = tem;
2321         poolFinish(&dtd.pool);
2322       }
2323       break;
2324     case XML_ROLE_DOCTYPE_CLOSE:
2325       if (dtd.complete && hadExternalDoctype) {
2326         dtd.complete = 0;
2327 #ifdef XML_DTD
2328         if (paramEntityParsing && externalEntityRefHandler) {
2329           ENTITY *entity = (ENTITY *)lookup(&dtd.paramEntities,
2330                                             externalSubsetName,
2331                                             0);
2332           if (!externalEntityRefHandler(externalEntityRefHandlerArg,
2333                                         0,
2334                                         entity->base,
2335                                         entity->systemId,
2336                                         entity->publicId))
2337            return XML_ERROR_EXTERNAL_ENTITY_HANDLING;
2338         }
2339 #endif /* XML_DTD */
2340         if (!dtd.complete
2341             && !dtd.standalone
2342             && notStandaloneHandler
2343             && !notStandaloneHandler(handlerArg))
2344           return XML_ERROR_NOT_STANDALONE;
2345       }
2346       if (endDoctypeDeclHandler)
2347         endDoctypeDeclHandler(handlerArg);
2348       break;
2349     case XML_ROLE_INSTANCE_START:
2350       processor = contentProcessor;
2351       return contentProcessor(parser, s, end, nextPtr);
2352     case XML_ROLE_ATTLIST_ELEMENT_NAME:
2353       {
2354         const XML_Char *name = poolStoreString(&dtd.pool, enc, s, next);
2355         if (!name)
2356           return XML_ERROR_NO_MEMORY;
2357         declElementType = (ELEMENT_TYPE *)lookup(&dtd.elementTypes, name, sizeof(ELEMENT_TYPE));
2358         if (!declElementType)
2359           return XML_ERROR_NO_MEMORY;
2360         if (declElementType->name != name)
2361           poolDiscard(&dtd.pool);
2362         else {
2363           poolFinish(&dtd.pool);
2364           if (!setElementTypePrefix(parser, declElementType))
2365             return XML_ERROR_NO_MEMORY;
2366         }
2367         break;
2368       }
2369     case XML_ROLE_ATTRIBUTE_NAME:
2370       declAttributeId = getAttributeId(parser, enc, s, next);
2371       if (!declAttributeId)
2372         return XML_ERROR_NO_MEMORY;
2373       declAttributeIsCdata = 0;
2374       declAttributeIsId = 0;
2375       break;
2376     case XML_ROLE_ATTRIBUTE_TYPE_CDATA:
2377       declAttributeIsCdata = 1;
2378       break;
2379     case XML_ROLE_ATTRIBUTE_TYPE_ID:
2380       declAttributeIsId = 1;
2381       break;
2382     case XML_ROLE_IMPLIED_ATTRIBUTE_VALUE:
2383     case XML_ROLE_REQUIRED_ATTRIBUTE_VALUE:
2384       if (dtd.complete
2385           && !defineAttribute(declElementType, declAttributeId, declAttributeIsCdata,
2386                               declAttributeIsId, 0))
2387         return XML_ERROR_NO_MEMORY;
2388       break;
2389     case XML_ROLE_DEFAULT_ATTRIBUTE_VALUE:
2390     case XML_ROLE_FIXED_ATTRIBUTE_VALUE:
2391       {
2392         const XML_Char *attVal;
2393         enum XML_Error result
2394           = storeAttributeValue(parser, enc, declAttributeIsCdata,
2395                                 s + enc->minBytesPerChar,
2396                                 next - enc->minBytesPerChar,
2397                                 &dtd.pool);
2398         if (result)
2399           return result;
2400         attVal = poolStart(&dtd.pool);
2401         poolFinish(&dtd.pool);
2402         if (dtd.complete
2403             // ID attributes aren't allowed to have a default
2404             && !defineAttribute(declElementType, declAttributeId, declAttributeIsCdata, 0, attVal))
2405           return XML_ERROR_NO_MEMORY;
2406         break;
2407       }
2408     case XML_ROLE_ENTITY_VALUE:
2409       {
2410         enum XML_Error result = storeEntityValue(parser, enc,
2411                                                  s + enc->minBytesPerChar,
2412                                                  next - enc->minBytesPerChar);
2413         if (declEntity) {
2414           declEntity->textPtr = poolStart(&dtd.pool);
2415           declEntity->textLen = poolLength(&dtd.pool);
2416           poolFinish(&dtd.pool);
2417           if (internalParsedEntityDeclHandler
2418               // Check it's not a parameter entity
2419               && ((ENTITY *)lookup(&dtd.generalEntities, declEntity->name, 0)
2420                   == declEntity)) {
2421             *eventEndPP = s;
2422             internalParsedEntityDeclHandler(handlerArg,
2423                                             declEntity->name,
2424                                             declEntity->textPtr,
2425                                             declEntity->textLen);
2426           }
2427         }
2428         else
2429           poolDiscard(&dtd.pool);
2430         if (result != XML_ERROR_NONE)
2431           return result;
2432       }
2433       break;
2434     case XML_ROLE_DOCTYPE_SYSTEM_ID:
2435       if (!dtd.standalone
2436 #ifdef XML_DTD
2437           && !paramEntityParsing
2438 #endif /* XML_DTD */
2439           && notStandaloneHandler
2440           && !notStandaloneHandler(handlerArg))
2441         return XML_ERROR_NOT_STANDALONE;
2442       hadExternalDoctype = 1;
2443 #ifndef XML_DTD
2444       break;
2445 #else /* XML_DTD */
2446       if (!declEntity) {
2447         declEntity = (ENTITY *)lookup(&dtd.paramEntities,
2448                                       externalSubsetName,
2449                                       sizeof(ENTITY));
2450         if (!declEntity)
2451           return XML_ERROR_NO_MEMORY;
2452       }
2453       /* fall through */
2454 #endif /* XML_DTD */
2455     case XML_ROLE_ENTITY_SYSTEM_ID:
2456       if (declEntity) {
2457         declEntity->systemId = poolStoreString(&dtd.pool, enc,
2458                                                s + enc->minBytesPerChar,
2459                                                next - enc->minBytesPerChar);
2460         if (!declEntity->systemId)
2461           return XML_ERROR_NO_MEMORY;
2462         declEntity->base = curBase;
2463         poolFinish(&dtd.pool);
2464       }
2465       break;
2466     case XML_ROLE_ENTITY_NOTATION_NAME:
2467       if (declEntity) {
2468         declEntity->notation = poolStoreString(&dtd.pool, enc, s, next);
2469         if (!declEntity->notation)
2470           return XML_ERROR_NO_MEMORY;
2471         poolFinish(&dtd.pool);
2472         if (unparsedEntityDeclHandler) {
2473           *eventEndPP = s;
2474           unparsedEntityDeclHandler(handlerArg,
2475                                     declEntity->name,
2476                                     declEntity->base,
2477                                     declEntity->systemId,
2478                                     declEntity->publicId,
2479                                     declEntity->notation);
2480         }
2481
2482       }
2483       break;
2484     case XML_ROLE_EXTERNAL_GENERAL_ENTITY_NO_NOTATION:
2485       if (declEntity && externalParsedEntityDeclHandler) {
2486         *eventEndPP = s;
2487         externalParsedEntityDeclHandler(handlerArg,
2488                                         declEntity->name,
2489                                         declEntity->base,
2490                                         declEntity->systemId,
2491                                         declEntity->publicId);
2492       }
2493       break;
2494     case XML_ROLE_GENERAL_ENTITY_NAME:
2495       {
2496         const XML_Char *name;
2497         if (XmlPredefinedEntityName(enc, s, next)) {
2498           declEntity = 0;
2499           break;
2500         }
2501         name = poolStoreString(&dtd.pool, enc, s, next);
2502         if (!name)
2503           return XML_ERROR_NO_MEMORY;
2504         if (dtd.complete) {
2505           declEntity = (ENTITY *)lookup(&dtd.generalEntities, name, sizeof(ENTITY));
2506           if (!declEntity)
2507             return XML_ERROR_NO_MEMORY;
2508           if (declEntity->name != name) {
2509             poolDiscard(&dtd.pool);
2510             declEntity = 0;
2511           }
2512           else
2513             poolFinish(&dtd.pool);
2514         }
2515         else {
2516           poolDiscard(&dtd.pool);
2517           declEntity = 0;
2518         }
2519       }
2520       break;
2521     case XML_ROLE_PARAM_ENTITY_NAME:
2522 #ifdef XML_DTD
2523       if (dtd.complete) {
2524         const XML_Char *name = poolStoreString(&dtd.pool, enc, s, next);
2525         if (!name)
2526           return XML_ERROR_NO_MEMORY;
2527         declEntity = (ENTITY *)lookup(&dtd.paramEntities, name, sizeof(ENTITY));
2528         if (!declEntity)
2529           return XML_ERROR_NO_MEMORY;
2530         if (declEntity->name != name) {
2531           poolDiscard(&dtd.pool);
2532           declEntity = 0;
2533         }
2534         else
2535           poolFinish(&dtd.pool);
2536       }
2537 #else /* not XML_DTD */
2538       declEntity = 0;
2539 #endif /* not XML_DTD */
2540       break;
2541     case XML_ROLE_NOTATION_NAME:
2542       declNotationPublicId = 0;
2543       declNotationName = 0;
2544       if (notationDeclHandler) {
2545         declNotationName = poolStoreString(&tempPool, enc, s, next);
2546         if (!declNotationName)
2547           return XML_ERROR_NO_MEMORY;
2548         poolFinish(&tempPool);
2549       }
2550       break;
2551     case XML_ROLE_NOTATION_PUBLIC_ID:
2552       if (!XmlIsPublicId(enc, s, next, eventPP))
2553         return XML_ERROR_SYNTAX;
2554       if (declNotationName) {
2555         XML_Char *tem = poolStoreString(&tempPool,
2556                                         enc,
2557                                         s + enc->minBytesPerChar,
2558                                         next - enc->minBytesPerChar);
2559         if (!tem)
2560           return XML_ERROR_NO_MEMORY;
2561         normalizePublicId(tem);
2562         declNotationPublicId = tem;
2563         poolFinish(&tempPool);
2564       }
2565       break;
2566     case XML_ROLE_NOTATION_SYSTEM_ID:
2567       if (declNotationName && notationDeclHandler) {
2568         const XML_Char *systemId
2569           = poolStoreString(&tempPool, enc,
2570                             s + enc->minBytesPerChar,
2571                             next - enc->minBytesPerChar);
2572         if (!systemId)
2573           return XML_ERROR_NO_MEMORY;
2574         *eventEndPP = s;
2575         notationDeclHandler(handlerArg,
2576                             declNotationName,
2577                             curBase,
2578                             systemId,
2579                             declNotationPublicId);
2580       }
2581       poolClear(&tempPool);
2582       break;
2583     case XML_ROLE_NOTATION_NO_SYSTEM_ID:
2584       if (declNotationPublicId && notationDeclHandler) {
2585         *eventEndPP = s;
2586         notationDeclHandler(handlerArg,
2587                             declNotationName,
2588                             curBase,
2589                             0,
2590                             declNotationPublicId);
2591       }
2592       poolClear(&tempPool);
2593       break;
2594     case XML_ROLE_ERROR:
2595       switch (tok) {
2596       case XML_TOK_PARAM_ENTITY_REF:
2597         return XML_ERROR_PARAM_ENTITY_REF;
2598       case XML_TOK_XML_DECL:
2599         return XML_ERROR_MISPLACED_XML_PI;
2600       default:
2601         return XML_ERROR_SYNTAX;
2602       }
2603 #ifdef XML_DTD
2604     case XML_ROLE_IGNORE_SECT:
2605       {
2606         enum XML_Error result;
2607         if (defaultHandler)
2608           reportDefault(parser, enc, s, next);
2609         result = doIgnoreSection(parser, enc, &next, end, nextPtr);
2610         if (!next) {
2611           processor = ignoreSectionProcessor;
2612           return result;
2613         }
2614       }
2615       break;
2616 #endif /* XML_DTD */
2617     case XML_ROLE_GROUP_OPEN:
2618       if (prologState.level >= groupSize) {
2619         if (groupSize)
2620           groupConnector = realloc(groupConnector, groupSize *= 2);
2621         else
2622           groupConnector = malloc(groupSize = 32);
2623         if (!groupConnector)
2624           return XML_ERROR_NO_MEMORY;
2625       }
2626       groupConnector[prologState.level] = 0;
2627       break;
2628     case XML_ROLE_GROUP_SEQUENCE:
2629       if (groupConnector[prologState.level] == '|')
2630         return XML_ERROR_SYNTAX;
2631       groupConnector[prologState.level] = ',';
2632       break;
2633     case XML_ROLE_GROUP_CHOICE:
2634       if (groupConnector[prologState.level] == ',')
2635         return XML_ERROR_SYNTAX;
2636       groupConnector[prologState.level] = '|';
2637       break;
2638     case XML_ROLE_PARAM_ENTITY_REF:
2639 #ifdef XML_DTD
2640     case XML_ROLE_INNER_PARAM_ENTITY_REF:
2641       if (paramEntityParsing
2642           && (dtd.complete || role == XML_ROLE_INNER_PARAM_ENTITY_REF)) {
2643         const XML_Char *name;
2644         ENTITY *entity;
2645         name = poolStoreString(&dtd.pool, enc,
2646                                 s + enc->minBytesPerChar,
2647                                 next - enc->minBytesPerChar);
2648         if (!name)
2649           return XML_ERROR_NO_MEMORY;
2650         entity = (ENTITY *)lookup(&dtd.paramEntities, name, 0);
2651         poolDiscard(&dtd.pool);
2652         if (!entity) {
2653           /* FIXME what to do if !dtd.complete? */
2654           return XML_ERROR_UNDEFINED_ENTITY;
2655         }
2656         if (entity->open)
2657           return XML_ERROR_RECURSIVE_ENTITY_REF;
2658         if (entity->textPtr) {
2659           enum XML_Error result;
2660           result = processInternalParamEntity(parser, entity);
2661           if (result != XML_ERROR_NONE)
2662             return result;
2663           break;
2664         }
2665         if (role == XML_ROLE_INNER_PARAM_ENTITY_REF)
2666           return XML_ERROR_PARAM_ENTITY_REF;
2667         if (externalEntityRefHandler) {
2668           dtd.complete = 0;
2669           entity->open = 1;
2670           if (!externalEntityRefHandler(externalEntityRefHandlerArg,
2671                                         0,
2672                                         entity->base,
2673                                         entity->systemId,
2674                                         entity->publicId)) {
2675             entity->open = 0;
2676             return XML_ERROR_EXTERNAL_ENTITY_HANDLING;
2677           }
2678           entity->open = 0;
2679           if (dtd.complete)
2680             break;
2681         }
2682       }
2683 #endif /* XML_DTD */
2684       if (!dtd.standalone
2685           && notStandaloneHandler
2686           && !notStandaloneHandler(handlerArg))
2687         return XML_ERROR_NOT_STANDALONE;
2688       dtd.complete = 0;
2689       if (defaultHandler)
2690         reportDefault(parser, enc, s, next);
2691       break;
2692     case XML_ROLE_NONE:
2693       switch (tok) {
2694       case XML_TOK_PI:
2695         if (!reportProcessingInstruction(parser, enc, s, next))
2696           return XML_ERROR_NO_MEMORY;
2697         break;
2698       case XML_TOK_COMMENT:
2699         if (!reportComment(parser, enc, s, next))
2700           return XML_ERROR_NO_MEMORY;
2701         break;
2702       }
2703       break;
2704     }
2705     if (defaultHandler) {
2706       switch (tok) {
2707       case XML_TOK_PI:
2708       case XML_TOK_COMMENT:
2709       case XML_TOK_BOM:
2710       case XML_TOK_XML_DECL:
2711 #ifdef XML_DTD
2712       case XML_TOK_IGNORE_SECT:
2713 #endif /* XML_DTD */
2714       case XML_TOK_PARAM_ENTITY_REF:
2715         break;
2716       default:
2717 #ifdef XML_DTD
2718         if (role != XML_ROLE_IGNORE_SECT)
2719 #endif /* XML_DTD */
2720           reportDefault(parser, enc, s, next);
2721       }
2722     }
2723     s = next;
2724     tok = XmlPrologTok(enc, s, end, &next);
2725   }
2726   /* not reached */
2727 }
2728
2729 static
2730 enum XML_Error epilogProcessor(XML_Parser parser,
2731                                const char *s,
2732                                const char *end,
2733                                const char **nextPtr)
2734 {
2735   processor = epilogProcessor;
2736   eventPtr = s;
2737   for (;;) {
2738     const char *next;
2739     int tok = XmlPrologTok(encoding, s, end, &next);
2740     eventEndPtr = next;
2741     switch (tok) {
2742     case -XML_TOK_PROLOG_S:
2743       if (defaultHandler) {
2744         eventEndPtr = end;
2745         reportDefault(parser, encoding, s, end);
2746       }
2747       /* fall through */
2748     case XML_TOK_NONE:
2749       if (nextPtr)
2750         *nextPtr = end;
2751       return XML_ERROR_NONE;
2752     case XML_TOK_PROLOG_S:
2753       if (defaultHandler)
2754         reportDefault(parser, encoding, s, next);
2755       break;
2756     case XML_TOK_PI:
2757       if (!reportProcessingInstruction(parser, encoding, s, next))
2758         return XML_ERROR_NO_MEMORY;
2759       break;
2760     case XML_TOK_COMMENT:
2761       if (!reportComment(parser, encoding, s, next))
2762         return XML_ERROR_NO_MEMORY;
2763       break;
2764     case XML_TOK_INVALID:
2765       eventPtr = next;
2766       return XML_ERROR_INVALID_TOKEN;
2767     case XML_TOK_PARTIAL:
2768       if (nextPtr) {
2769         *nextPtr = s;
2770         return XML_ERROR_NONE;
2771       }
2772       return XML_ERROR_UNCLOSED_TOKEN;
2773     case XML_TOK_PARTIAL_CHAR:
2774       if (nextPtr) {
2775         *nextPtr = s;
2776         return XML_ERROR_NONE;
2777       }
2778       return XML_ERROR_PARTIAL_CHAR;
2779     default:
2780       return XML_ERROR_JUNK_AFTER_DOC_ELEMENT;
2781     }
2782     eventPtr = s = next;
2783   }
2784 }
2785
2786 #ifdef XML_DTD
2787
2788 static enum XML_Error
2789 processInternalParamEntity(XML_Parser parser, ENTITY *entity)
2790 {
2791   const char *s, *end, *next;
2792   int tok;
2793   enum XML_Error result;
2794   OPEN_INTERNAL_ENTITY openEntity;
2795   entity->open = 1;
2796   openEntity.next = openInternalEntities;
2797   openInternalEntities = &openEntity;
2798   openEntity.entity = entity;
2799   openEntity.internalEventPtr = 0;
2800   openEntity.internalEventEndPtr = 0;
2801   s = (char *)entity->textPtr;
2802   end = (char *)(entity->textPtr + entity->textLen);
2803   tok = XmlPrologTok(internalEncoding, s, end, &next);
2804   result = doProlog(parser, internalEncoding, s, end, tok, next, 0);
2805   entity->open = 0;
2806   openInternalEntities = openEntity.next;
2807   return result;
2808 }
2809
2810 #endif /* XML_DTD */
2811
2812 static
2813 enum XML_Error errorProcessor(XML_Parser parser,
2814                               const char *s,
2815                               const char *end,
2816                               const char **nextPtr)
2817 {
2818   return errorCode;
2819 }
2820
2821 static enum XML_Error
2822 storeAttributeValue(XML_Parser parser, const ENCODING *enc, int isCdata,
2823                     const char *ptr, const char *end,
2824                     STRING_POOL *pool)
2825 {
2826   enum XML_Error result = appendAttributeValue(parser, enc, isCdata, ptr, end, pool);
2827   if (result)
2828     return result;
2829   if (!isCdata && poolLength(pool) && poolLastChar(pool) == 0x20)
2830     poolChop(pool);
2831   if (!poolAppendChar(pool, XML_T('\0')))
2832     return XML_ERROR_NO_MEMORY;
2833   return XML_ERROR_NONE;
2834 }
2835
2836 static enum XML_Error
2837 appendAttributeValue(XML_Parser parser, const ENCODING *enc, int isCdata,
2838                      const char *ptr, const char *end,
2839                      STRING_POOL *pool)
2840 {
2841   for (;;) {
2842     const char *next;
2843     int tok = XmlAttributeValueTok(enc, ptr, end, &next);
2844     switch (tok) {
2845     case XML_TOK_NONE:
2846       return XML_ERROR_NONE;
2847     case XML_TOK_INVALID:
2848       if (enc == encoding)
2849         eventPtr = next;
2850       return XML_ERROR_INVALID_TOKEN;
2851     case XML_TOK_PARTIAL:
2852       if (enc == encoding)
2853         eventPtr = ptr;
2854       return XML_ERROR_INVALID_TOKEN;
2855     case XML_TOK_CHAR_REF:
2856       {
2857         XML_Char buf[XML_ENCODE_MAX];
2858         int i;
2859         int n = XmlCharRefNumber(enc, ptr);
2860         if (n < 0) {
2861           if (enc == encoding)
2862             eventPtr = ptr;
2863           return XML_ERROR_BAD_CHAR_REF;
2864         }
2865         if (!isCdata
2866             && n == 0x20 /* space */
2867             && (poolLength(pool) == 0 || poolLastChar(pool) == 0x20))
2868           break;
2869         n = XmlEncode(n, (ICHAR *)buf);
2870         if (!n) {
2871           if (enc == encoding)
2872             eventPtr = ptr;
2873           return XML_ERROR_BAD_CHAR_REF;
2874         }
2875         for (i = 0; i < n; i++) {
2876           if (!poolAppendChar(pool, buf[i]))
2877             return XML_ERROR_NO_MEMORY;
2878         }
2879       }
2880       break;
2881     case XML_TOK_DATA_CHARS:
2882       if (!poolAppend(pool, enc, ptr, next))
2883         return XML_ERROR_NO_MEMORY;
2884       break;
2885       break;
2886     case XML_TOK_TRAILING_CR:
2887       next = ptr + enc->minBytesPerChar;
2888       /* fall through */
2889     case XML_TOK_ATTRIBUTE_VALUE_S:
2890     case XML_TOK_DATA_NEWLINE:
2891       if (!isCdata && (poolLength(pool) == 0 || poolLastChar(pool) == 0x20))
2892         break;
2893       if (!poolAppendChar(pool, 0x20))
2894         return XML_ERROR_NO_MEMORY;
2895       break;
2896     case XML_TOK_ENTITY_REF:
2897       {
2898         const XML_Char *name;
2899         ENTITY *entity;
2900         XML_Char ch = XmlPredefinedEntityName(enc,
2901                                               ptr + enc->minBytesPerChar,
2902                                               next - enc->minBytesPerChar);
2903         if (ch) {
2904           if (!poolAppendChar(pool, ch))
2905             return XML_ERROR_NO_MEMORY;
2906           break;
2907         }
2908         name = poolStoreString(&temp2Pool, enc,
2909                                ptr + enc->minBytesPerChar,
2910                                next - enc->minBytesPerChar);
2911         if (!name)
2912           return XML_ERROR_NO_MEMORY;
2913         entity = (ENTITY *)lookup(&dtd.generalEntities, name, 0);
2914         poolDiscard(&temp2Pool);
2915         if (!entity) {
2916           if (dtd.complete) {
2917             if (enc == encoding)
2918               eventPtr = ptr;
2919             return XML_ERROR_UNDEFINED_ENTITY;
2920           }
2921         }
2922         else if (entity->open) {
2923           if (enc == encoding)
2924             eventPtr = ptr;
2925           return XML_ERROR_RECURSIVE_ENTITY_REF;
2926         }
2927         else if (entity->notation) {
2928           if (enc == encoding)
2929             eventPtr = ptr;
2930           return XML_ERROR_BINARY_ENTITY_REF;
2931         }
2932         else if (!entity->textPtr) {
2933           if (enc == encoding)
2934             eventPtr = ptr;
2935           return XML_ERROR_ATTRIBUTE_EXTERNAL_ENTITY_REF;
2936         }
2937         else {
2938           enum XML_Error result;
2939           const XML_Char *textEnd = entity->textPtr + entity->textLen;
2940           entity->open = 1;
2941           result = appendAttributeValue(parser, internalEncoding, isCdata, (char *)entity->textPtr, (char *)textEnd, pool);
2942           entity->open = 0;
2943           if (result)
2944             return result;
2945         }
2946       }
2947       break;
2948     default:
2949       abort();
2950     }
2951     ptr = next;
2952   }
2953   /* not reached */
2954 }
2955
2956 static
2957 enum XML_Error storeEntityValue(XML_Parser parser,
2958                                 const ENCODING *enc,
2959                                 const char *entityTextPtr,
2960                                 const char *entityTextEnd)
2961 {
2962   STRING_POOL *pool = &(dtd.pool);
2963   for (;;) {
2964     const char *next;
2965     int tok = XmlEntityValueTok(enc, entityTextPtr, entityTextEnd, &next);
2966     switch (tok) {
2967     case XML_TOK_PARAM_ENTITY_REF:
2968 #ifdef XML_DTD
2969       if (parentParser || enc != encoding) {
2970         enum XML_Error result;
2971         const XML_Char *name;
2972         ENTITY *entity;
2973         name = poolStoreString(&tempPool, enc,
2974                                entityTextPtr + enc->minBytesPerChar,
2975                                next - enc->minBytesPerChar);
2976         if (!name)
2977           return XML_ERROR_NO_MEMORY;
2978         entity = (ENTITY *)lookup(&dtd.paramEntities, name, 0);
2979         poolDiscard(&tempPool);
2980         if (!entity) {
2981           if (enc == encoding)
2982             eventPtr = entityTextPtr;
2983           return XML_ERROR_UNDEFINED_ENTITY;
2984         }
2985         if (entity->open) {
2986           if (enc == encoding)
2987             eventPtr = entityTextPtr;
2988           return XML_ERROR_RECURSIVE_ENTITY_REF;
2989         }
2990         if (entity->systemId) {
2991           if (enc == encoding)
2992             eventPtr = entityTextPtr;
2993           return XML_ERROR_PARAM_ENTITY_REF;
2994         }
2995         entity->open = 1;
2996         result = storeEntityValue(parser,
2997                                   internalEncoding,
2998                                   (char *)entity->textPtr,
2999                                   (char *)(entity->textPtr + entity->textLen));
3000         entity->open = 0;
3001         if (result)
3002           return result;
3003         break;
3004       }
3005 #endif /* XML_DTD */
3006       eventPtr = entityTextPtr;
3007       return XML_ERROR_SYNTAX;
3008     case XML_TOK_NONE:
3009       return XML_ERROR_NONE;
3010     case XML_TOK_ENTITY_REF:
3011     case XML_TOK_DATA_CHARS:
3012       if (!poolAppend(pool, enc, entityTextPtr, next))
3013         return XML_ERROR_NO_MEMORY;
3014       break;
3015     case XML_TOK_TRAILING_CR:
3016       next = entityTextPtr + enc->minBytesPerChar;
3017       /* fall through */
3018     case XML_TOK_DATA_NEWLINE:
3019       if (pool->end == pool->ptr && !poolGrow(pool))
3020         return XML_ERROR_NO_MEMORY;
3021       *(pool->ptr)++ = 0xA;
3022       break;
3023     case XML_TOK_CHAR_REF:
3024       {
3025         XML_Char buf[XML_ENCODE_MAX];
3026         int i;
3027         int n = XmlCharRefNumber(enc, entityTextPtr);
3028         if (n < 0) {
3029           if (enc == encoding)
3030             eventPtr = entityTextPtr;
3031           return XML_ERROR_BAD_CHAR_REF;
3032         }
3033         n = XmlEncode(n, (ICHAR *)buf);
3034         if (!n) {
3035           if (enc == encoding)
3036             eventPtr = entityTextPtr;
3037           return XML_ERROR_BAD_CHAR_REF;
3038         }
3039         for (i = 0; i < n; i++) {
3040           if (pool->end == pool->ptr && !poolGrow(pool))
3041             return XML_ERROR_NO_MEMORY;
3042           *(pool->ptr)++ = buf[i];
3043         }
3044       }
3045       break;
3046     case XML_TOK_PARTIAL:
3047       if (enc == encoding)
3048         eventPtr = entityTextPtr;
3049       return XML_ERROR_INVALID_TOKEN;
3050     case XML_TOK_INVALID:
3051       if (enc == encoding)
3052         eventPtr = next;
3053       return XML_ERROR_INVALID_TOKEN;
3054     default:
3055       abort();
3056     }
3057     entityTextPtr = next;
3058   }
3059   /* not reached */
3060 }
3061
3062 static void
3063 normalizeLines(XML_Char *s)
3064 {
3065   XML_Char *p;
3066   for (;; s++) {
3067     if (*s == XML_T('\0'))
3068       return;
3069     if (*s == 0xD)
3070       break;
3071   }
3072   p = s;
3073   do {
3074     if (*s == 0xD) {
3075       *p++ = 0xA;
3076       if (*++s == 0xA)
3077         s++;
3078     }
3079     else
3080       *p++ = *s++;
3081   } while (*s);
3082   *p = XML_T('\0');
3083 }
3084
3085 static int
3086 reportProcessingInstruction(XML_Parser parser, const ENCODING *enc, const char *start, const char *end)
3087 {
3088   const XML_Char *target;
3089   XML_Char *data;
3090   const char *tem;
3091   if (!processingInstructionHandler) {
3092     if (defaultHandler)
3093       reportDefault(parser, enc, start, end);
3094     return 1;
3095   }
3096   start += enc->minBytesPerChar * 2;
3097   tem = start + XmlNameLength(enc, start);
3098   target = poolStoreString(&tempPool, enc, start, tem);
3099   if (!target)
3100     return 0;
3101   poolFinish(&tempPool);
3102   data = poolStoreString(&tempPool, enc,
3103                         XmlSkipS(enc, tem),
3104                         end - enc->minBytesPerChar*2);
3105   if (!data)
3106     return 0;
3107   normalizeLines(data);
3108   processingInstructionHandler(handlerArg, target, data);
3109   poolClear(&tempPool);
3110   return 1;
3111 }
3112
3113 static int
3114 reportComment(XML_Parser parser, const ENCODING *enc, const char *start, const char *end)
3115 {
3116   XML_Char *data;
3117   if (!commentHandler) {
3118     if (defaultHandler)
3119       reportDefault(parser, enc, start, end);
3120     return 1;
3121   }
3122   data = poolStoreString(&tempPool,
3123                          enc,
3124                          start + enc->minBytesPerChar * 4,
3125                          end - enc->minBytesPerChar * 3);
3126   if (!data)
3127     return 0;
3128   normalizeLines(data);
3129   commentHandler(handlerArg, data);
3130   poolClear(&tempPool);
3131   return 1;
3132 }
3133
3134 static void
3135 reportDefault(XML_Parser parser, const ENCODING *enc, const char *s, const char *end)
3136 {
3137   if (MUST_CONVERT(enc, s)) {
3138     const char **eventPP;
3139     const char **eventEndPP;
3140     if (enc == encoding) {
3141       eventPP = &eventPtr;
3142       eventEndPP = &eventEndPtr;
3143     }
3144     else {
3145       eventPP = &(openInternalEntities->internalEventPtr);
3146       eventEndPP = &(openInternalEntities->internalEventEndPtr);
3147     }
3148     do {
3149       ICHAR *dataPtr = (ICHAR *)dataBuf;
3150       XmlConvert(enc, &s, end, &dataPtr, (ICHAR *)dataBufEnd);
3151       *eventEndPP = s;
3152       defaultHandler(handlerArg, dataBuf, dataPtr - (ICHAR *)dataBuf);
3153       *eventPP = s;
3154     } while (s != end);
3155   }
3156   else
3157     defaultHandler(handlerArg, (XML_Char *)s, (XML_Char *)end - (XML_Char *)s);
3158 }
3159
3160
3161 static int
3162 defineAttribute(ELEMENT_TYPE *type, ATTRIBUTE_ID *attId, int isCdata, int isId, const XML_Char *value)
3163 {
3164   DEFAULT_ATTRIBUTE *att;
3165   if (value || isId) {
3166     /* The handling of default attributes gets messed up if we have
3167        a default which duplicates a non-default. */
3168     int i;
3169     for (i = 0; i < type->nDefaultAtts; i++)
3170       if (attId == type->defaultAtts[i].id)
3171         return 1;
3172     if (isId && !type->idAtt && !attId->xmlns)
3173       type->idAtt = attId;
3174   }
3175   if (type->nDefaultAtts == type->allocDefaultAtts) {
3176     if (type->allocDefaultAtts == 0) {
3177       type->allocDefaultAtts = 8;
3178       type->defaultAtts = malloc(type->allocDefaultAtts*sizeof(DEFAULT_ATTRIBUTE));
3179     }
3180     else {
3181       type->allocDefaultAtts *= 2;
3182       type->defaultAtts = realloc(type->defaultAtts,
3183                                   type->allocDefaultAtts*sizeof(DEFAULT_ATTRIBUTE));
3184     }
3185     if (!type->defaultAtts)
3186       return 0;
3187   }
3188   att = type->defaultAtts + type->nDefaultAtts;
3189   att->id = attId;
3190   att->value = value;
3191   att->isCdata = isCdata;
3192   if (!isCdata)
3193     attId->maybeTokenized = 1;
3194   type->nDefaultAtts += 1;
3195   return 1;
3196 }
3197
3198 static int setElementTypePrefix(XML_Parser parser, ELEMENT_TYPE *elementType)
3199 {
3200   const XML_Char *name;
3201   for (name = elementType->name; *name; name++) {
3202     if (*name == XML_T(':')) {
3203       PREFIX *prefix;
3204       const XML_Char *s;
3205       for (s = elementType->name; s != name; s++) {
3206         if (!poolAppendChar(&dtd.pool, *s))
3207           return 0;
3208       }
3209       if (!poolAppendChar(&dtd.pool, XML_T('\0')))
3210         return 0;
3211       prefix = (PREFIX *)lookup(&dtd.prefixes, poolStart(&dtd.pool), sizeof(PREFIX));
3212       if (!prefix)
3213         return 0;
3214       if (prefix->name == poolStart(&dtd.pool))
3215         poolFinish(&dtd.pool);
3216       else
3217         poolDiscard(&dtd.pool);
3218       elementType->prefix = prefix;
3219
3220     }
3221   }
3222   return 1;
3223 }
3224
3225 static ATTRIBUTE_ID *
3226 getAttributeId(XML_Parser parser, const ENCODING *enc, const char *start, const char *end)
3227 {
3228   ATTRIBUTE_ID *id;
3229   const XML_Char *name;
3230   if (!poolAppendChar(&dtd.pool, XML_T('\0')))
3231     return 0;
3232   name = poolStoreString(&dtd.pool, enc, start, end);
3233   if (!name)
3234     return 0;
3235   ++name;
3236   id = (ATTRIBUTE_ID *)lookup(&dtd.attributeIds, name, sizeof(ATTRIBUTE_ID));
3237   if (!id)
3238     return 0;
3239   if (id->name != name)
3240     poolDiscard(&dtd.pool);
3241   else {
3242     poolFinish(&dtd.pool);
3243     if (!ns)
3244       ;
3245     else if (name[0] == 'x'
3246         && name[1] == 'm'
3247         && name[2] == 'l'
3248         && name[3] == 'n'
3249         && name[4] == 's'
3250         && (name[5] == XML_T('\0') || name[5] == XML_T(':'))) {
3251       if (name[5] == '\0')
3252         id->prefix = &dtd.defaultPrefix;
3253       else
3254         id->prefix = (PREFIX *)lookup(&dtd.prefixes, name + 6, sizeof(PREFIX));
3255       id->xmlns = 1;
3256     }
3257     else {
3258       int i;
3259       for (i = 0; name[i]; i++) {
3260         if (name[i] == XML_T(':')) {
3261           int j;
3262           for (j = 0; j < i; j++) {
3263             if (!poolAppendChar(&dtd.pool, name[j]))
3264               return 0;
3265           }
3266           if (!poolAppendChar(&dtd.pool, XML_T('\0')))
3267             return 0;
3268           id->prefix = (PREFIX *)lookup(&dtd.prefixes, poolStart(&dtd.pool), sizeof(PREFIX));
3269           if (id->prefix->name == poolStart(&dtd.pool))
3270             poolFinish(&dtd.pool);
3271           else
3272             poolDiscard(&dtd.pool);
3273           break;
3274         }
3275       }
3276     }
3277   }
3278   return id;
3279 }
3280
3281 #define CONTEXT_SEP XML_T('\f')
3282
3283 static
3284 const XML_Char *getContext(XML_Parser parser)
3285 {
3286   HASH_TABLE_ITER iter;
3287   int needSep = 0;
3288
3289   if (dtd.defaultPrefix.binding) {
3290     int i;
3291     int len;
3292     if (!poolAppendChar(&tempPool, XML_T('=')))
3293       return 0;
3294     len = dtd.defaultPrefix.binding->uriLen;
3295     if (namespaceSeparator != XML_T('\0'))
3296       len--;
3297     for (i = 0; i < len; i++)
3298       if (!poolAppendChar(&tempPool, dtd.defaultPrefix.binding->uri[i]))
3299         return 0;
3300     needSep = 1;
3301   }
3302
3303   hashTableIterInit(&iter, &(dtd.prefixes));
3304   for (;;) {
3305     int i;
3306     int len;
3307     const XML_Char *s;
3308     PREFIX *prefix = (PREFIX *)hashTableIterNext(&iter);
3309     if (!prefix)
3310       break;
3311     if (!prefix->binding)
3312       continue;
3313     if (needSep && !poolAppendChar(&tempPool, CONTEXT_SEP))
3314       return 0;
3315     for (s = prefix->name; *s; s++)
3316       if (!poolAppendChar(&tempPool, *s))
3317         return 0;
3318     if (!poolAppendChar(&tempPool, XML_T('=')))
3319       return 0;
3320     len = prefix->binding->uriLen;
3321     if (namespaceSeparator != XML_T('\0'))
3322       len--;
3323     for (i = 0; i < len; i++)
3324       if (!poolAppendChar(&tempPool, prefix->binding->uri[i]))
3325         return 0;
3326     needSep = 1;
3327   }
3328
3329
3330   hashTableIterInit(&iter, &(dtd.generalEntities));
3331   for (;;) {
3332     const XML_Char *s;
3333     ENTITY *e = (ENTITY *)hashTableIterNext(&iter);
3334     if (!e)
3335       break;
3336     if (!e->open)
3337       continue;
3338     if (needSep && !poolAppendChar(&tempPool, CONTEXT_SEP))
3339       return 0;
3340     for (s = e->name; *s; s++)
3341       if (!poolAppendChar(&tempPool, *s))
3342         return 0;
3343     needSep = 1;
3344   }
3345
3346   if (!poolAppendChar(&tempPool, XML_T('\0')))
3347     return 0;
3348   return tempPool.start;
3349 }
3350
3351 static
3352 int setContext(XML_Parser parser, const XML_Char *context)
3353 {
3354   const XML_Char *s = context;
3355
3356   while (*context != XML_T('\0')) {
3357     if (*s == CONTEXT_SEP || *s == XML_T('\0')) {
3358       ENTITY *e;
3359       if (!poolAppendChar(&tempPool, XML_T('\0')))
3360         return 0;
3361       e = (ENTITY *)lookup(&dtd.generalEntities, poolStart(&tempPool), 0);
3362       if (e)
3363         e->open = 1;
3364       if (*s != XML_T('\0'))
3365         s++;
3366       context = s;
3367       poolDiscard(&tempPool);
3368     }
3369     else if (*s == '=') {
3370       PREFIX *prefix;
3371       if (poolLength(&tempPool) == 0)
3372         prefix = &dtd.defaultPrefix;
3373       else {
3374         if (!poolAppendChar(&tempPool, XML_T('\0')))
3375           return 0;
3376         prefix = (PREFIX *)lookup(&dtd.prefixes, poolStart(&tempPool), sizeof(PREFIX));
3377         if (!prefix)
3378           return 0;
3379         if (prefix->name == poolStart(&tempPool)) {
3380           prefix->name = poolCopyString(&dtd.pool, prefix->name);
3381           if (!prefix->name)
3382             return 0;
3383         }
3384         poolDiscard(&tempPool);
3385       }
3386       for (context = s + 1; *context != CONTEXT_SEP && *context != XML_T('\0'); context++)
3387         if (!poolAppendChar(&tempPool, *context))
3388           return 0;
3389       if (!poolAppendChar(&tempPool, XML_T('\0')))
3390         return 0;
3391       if (!addBinding(parser, prefix, 0, poolStart(&tempPool), &inheritedBindings))
3392         return 0;
3393       poolDiscard(&tempPool);
3394       if (*context != XML_T('\0'))
3395         ++context;
3396       s = context;
3397     }
3398     else {
3399       if (!poolAppendChar(&tempPool, *s))
3400         return 0;
3401       s++;
3402     }
3403   }
3404   return 1;
3405 }
3406
3407
3408 static
3409 void normalizePublicId(XML_Char *publicId)
3410 {
3411   XML_Char *p = publicId;
3412   XML_Char *s;
3413   for (s = publicId; *s; s++) {
3414     switch (*s) {
3415     case 0x20:
3416     case 0xD:
3417     case 0xA:
3418       if (p != publicId && p[-1] != 0x20)
3419         *p++ = 0x20;
3420       break;
3421     default:
3422       *p++ = *s;
3423     }
3424   }
3425   if (p != publicId && p[-1] == 0x20)
3426     --p;
3427   *p = XML_T('\0');
3428 }
3429
3430 static int dtdInit(DTD *p)
3431 {
3432   poolInit(&(p->pool));
3433   hashTableInit(&(p->generalEntities));
3434   hashTableInit(&(p->elementTypes));
3435   hashTableInit(&(p->attributeIds));
3436   hashTableInit(&(p->prefixes));
3437   p->complete = 1;
3438   p->standalone = 0;
3439 #ifdef XML_DTD
3440   hashTableInit(&(p->paramEntities));
3441 #endif /* XML_DTD */
3442   p->defaultPrefix.name = 0;
3443   p->defaultPrefix.binding = 0;
3444   return 1;
3445 }
3446
3447 #ifdef XML_DTD
3448
3449 static void dtdSwap(DTD *p1, DTD *p2)
3450 {
3451   DTD tem;
3452   memcpy(&tem, p1, sizeof(DTD));
3453   memcpy(p1, p2, sizeof(DTD));
3454   memcpy(p2, &tem, sizeof(DTD));
3455 }
3456
3457 #endif /* XML_DTD */
3458
3459 static void dtdDestroy(DTD *p)
3460 {
3461   HASH_TABLE_ITER iter;
3462   hashTableIterInit(&iter, &(p->elementTypes));
3463   for (;;) {
3464     ELEMENT_TYPE *e = (ELEMENT_TYPE *)hashTableIterNext(&iter);
3465     if (!e)
3466       break;
3467     if (e->allocDefaultAtts != 0)
3468       free(e->defaultAtts);
3469   }
3470   hashTableDestroy(&(p->generalEntities));
3471 #ifdef XML_DTD
3472   hashTableDestroy(&(p->paramEntities));
3473 #endif /* XML_DTD */
3474   hashTableDestroy(&(p->elementTypes));
3475   hashTableDestroy(&(p->attributeIds));
3476   hashTableDestroy(&(p->prefixes));
3477   poolDestroy(&(p->pool));
3478 }
3479
3480 /* Do a deep copy of the DTD.  Return 0 for out of memory; non-zero otherwise.
3481 The new DTD has already been initialized. */
3482
3483 static int dtdCopy(DTD *newDtd, const DTD *oldDtd)
3484 {
3485   HASH_TABLE_ITER iter;
3486
3487   /* Copy the prefix table. */
3488
3489   hashTableIterInit(&iter, &(oldDtd->prefixes));
3490   for (;;) {
3491     const XML_Char *name;
3492     const PREFIX *oldP = (PREFIX *)hashTableIterNext(&iter);
3493     if (!oldP)
3494       break;
3495     name = poolCopyString(&(newDtd->pool), oldP->name);
3496     if (!name)
3497       return 0;
3498     if (!lookup(&(newDtd->prefixes), name, sizeof(PREFIX)))
3499       return 0;
3500   }
3501
3502   hashTableIterInit(&iter, &(oldDtd->attributeIds));
3503
3504   /* Copy the attribute id table. */
3505
3506   for (;;) {
3507     ATTRIBUTE_ID *newA;
3508     const XML_Char *name;
3509     const ATTRIBUTE_ID *oldA = (ATTRIBUTE_ID *)hashTableIterNext(&iter);
3510
3511     if (!oldA)
3512       break;
3513     /* Remember to allocate the scratch byte before the name. */
3514     if (!poolAppendChar(&(newDtd->pool), XML_T('\0')))
3515       return 0;
3516     name = poolCopyString(&(newDtd->pool), oldA->name);
3517     if (!name)
3518       return 0;
3519     ++name;
3520     newA = (ATTRIBUTE_ID *)lookup(&(newDtd->attributeIds), name, sizeof(ATTRIBUTE_ID));
3521     if (!newA)
3522       return 0;
3523     newA->maybeTokenized = oldA->maybeTokenized;
3524     if (oldA->prefix) {
3525       newA->xmlns = oldA->xmlns;
3526       if (oldA->prefix == &oldDtd->defaultPrefix)
3527         newA->prefix = &newDtd->defaultPrefix;
3528       else
3529         newA->prefix = (PREFIX *)lookup(&(newDtd->prefixes), oldA->prefix->name, 0);
3530     }
3531   }
3532
3533   /* Copy the element type table. */
3534
3535   hashTableIterInit(&iter, &(oldDtd->elementTypes));
3536
3537   for (;;) {
3538     int i;
3539     ELEMENT_TYPE *newE;
3540     const XML_Char *name;
3541     const ELEMENT_TYPE *oldE = (ELEMENT_TYPE *)hashTableIterNext(&iter);
3542     if (!oldE)
3543       break;
3544     name = poolCopyString(&(newDtd->pool), oldE->name);
3545     if (!name)
3546       return 0;
3547     newE = (ELEMENT_TYPE *)lookup(&(newDtd->elementTypes), name, sizeof(ELEMENT_TYPE));
3548     if (!newE)
3549       return 0;
3550     if (oldE->nDefaultAtts) {
3551       newE->defaultAtts = (DEFAULT_ATTRIBUTE *)malloc(oldE->nDefaultAtts * sizeof(DEFAULT_ATTRIBUTE));
3552       if (!newE->defaultAtts)
3553         return 0;
3554     }
3555     if (oldE->idAtt)
3556       newE->idAtt = (ATTRIBUTE_ID *)lookup(&(newDtd->attributeIds), oldE->idAtt->name, 0);
3557     newE->allocDefaultAtts = newE->nDefaultAtts = oldE->nDefaultAtts;
3558     if (oldE->prefix)
3559       newE->prefix = (PREFIX *)lookup(&(newDtd->prefixes), oldE->prefix->name, 0);
3560     for (i = 0; i < newE->nDefaultAtts; i++) {
3561       newE->defaultAtts[i].id = (ATTRIBUTE_ID *)lookup(&(newDtd->attributeIds), oldE->defaultAtts[i].id->name, 0);
3562       newE->defaultAtts[i].isCdata = oldE->defaultAtts[i].isCdata;
3563       if (oldE->defaultAtts[i].value) {
3564         newE->defaultAtts[i].value = poolCopyString(&(newDtd->pool), oldE->defaultAtts[i].value);
3565         if (!newE->defaultAtts[i].value)
3566           return 0;
3567       }
3568       else
3569         newE->defaultAtts[i].value = 0;
3570     }
3571   }
3572
3573   /* Copy the entity tables. */
3574   if (!copyEntityTable(&(newDtd->generalEntities),
3575                        &(newDtd->pool),
3576                        &(oldDtd->generalEntities)))
3577       return 0;
3578
3579 #ifdef XML_DTD
3580   if (!copyEntityTable(&(newDtd->paramEntities),
3581                        &(newDtd->pool),
3582                        &(oldDtd->paramEntities)))
3583       return 0;
3584 #endif /* XML_DTD */
3585
3586   newDtd->complete = oldDtd->complete;
3587   newDtd->standalone = oldDtd->standalone;
3588   return 1;
3589 }
3590
3591 static int copyEntityTable(HASH_TABLE *newTable,
3592                            STRING_POOL *newPool,
3593                            const HASH_TABLE *oldTable)
3594 {
3595   HASH_TABLE_ITER iter;
3596   const XML_Char *cachedOldBase = 0;
3597   const XML_Char *cachedNewBase = 0;
3598
3599   hashTableIterInit(&iter, oldTable);
3600
3601   for (;;) {
3602     ENTITY *newE;
3603     const XML_Char *name;
3604     const ENTITY *oldE = (ENTITY *)hashTableIterNext(&iter);
3605     if (!oldE)
3606       break;
3607     name = poolCopyString(newPool, oldE->name);
3608     if (!name)
3609       return 0;
3610     newE = (ENTITY *)lookup(newTable, name, sizeof(ENTITY));
3611     if (!newE)
3612       return 0;
3613     if (oldE->systemId) {
3614       const XML_Char *tem = poolCopyString(newPool, oldE->systemId);
3615       if (!tem)
3616         return 0;
3617       newE->systemId = tem;
3618       if (oldE->base) {
3619         if (oldE->base == cachedOldBase)
3620           newE->base = cachedNewBase;
3621         else {
3622           cachedOldBase = oldE->base;
3623           tem = poolCopyString(newPool, cachedOldBase);
3624           if (!tem)
3625             return 0;
3626           cachedNewBase = newE->base = tem;
3627         }
3628       }
3629     }
3630     else {
3631       const XML_Char *tem = poolCopyStringN(newPool, oldE->textPtr, oldE->textLen);
3632       if (!tem)
3633         return 0;
3634       newE->textPtr = tem;
3635       newE->textLen = oldE->textLen;
3636     }
3637     if (oldE->notation) {
3638       const XML_Char *tem = poolCopyString(newPool, oldE->notation);
3639       if (!tem)
3640         return 0;
3641       newE->notation = tem;
3642     }
3643   }
3644   return 1;
3645 }
3646
3647 #define INIT_SIZE 64
3648
3649 static
3650 int keyeq(KEY s1, KEY s2)
3651 {
3652   for (; *s1 == *s2; s1++, s2++)
3653     if (*s1 == 0)
3654       return 1;
3655   return 0;
3656 }
3657
3658 static
3659 unsigned long hash(KEY s)
3660 {
3661   unsigned long h = 0;
3662   while (*s)
3663     h = (h << 5) + h + (unsigned char)*s++;
3664   return h;
3665 }
3666
3667 static
3668 NAMED *lookup(HASH_TABLE *table, KEY name, size_t createSize)
3669 {
3670   size_t i;
3671   if (table->size == 0) {
3672     if (!createSize)
3673       return 0;
3674     table->v = calloc(INIT_SIZE, sizeof(NAMED *));
3675     if (!table->v)
3676       return 0;
3677     table->size = INIT_SIZE;
3678     table->usedLim = INIT_SIZE / 2;
3679     i = hash(name) & (table->size - 1);
3680   }
3681   else {
3682     unsigned long h = hash(name);
3683     for (i = h & (table->size - 1);
3684          table->v[i];
3685          i == 0 ? i = table->size - 1 : --i) {
3686       if (keyeq(name, table->v[i]->name))
3687         return table->v[i];
3688     }
3689     if (!createSize)
3690       return 0;
3691     if (table->used == table->usedLim) {
3692       /* check for overflow */
3693       size_t newSize = table->size * 2;
3694       NAMED **newV = calloc(newSize, sizeof(NAMED *));
3695       if (!newV)
3696         return 0;
3697       for (i = 0; i < table->size; i++)
3698         if (table->v[i]) {
3699           size_t j;
3700           for (j = hash(table->v[i]->name) & (newSize - 1);
3701                newV[j];
3702                j == 0 ? j = newSize - 1 : --j)
3703             ;
3704           newV[j] = table->v[i];
3705         }
3706       free(table->v);
3707       table->v = newV;
3708       table->size = newSize;
3709       table->usedLim = newSize/2;
3710       for (i = h & (table->size - 1);
3711            table->v[i];
3712            i == 0 ? i = table->size - 1 : --i)
3713         ;
3714     }
3715   }
3716   table->v[i] = calloc(1, createSize);
3717   if (!table->v[i])
3718     return 0;
3719   table->v[i]->name = name;
3720   (table->used)++;
3721   return table->v[i];
3722 }
3723
3724 static
3725 void hashTableDestroy(HASH_TABLE *table)
3726 {
3727   size_t i;
3728   for (i = 0; i < table->size; i++) {
3729     NAMED *p = table->v[i];
3730     if (p)
3731       free(p);
3732   }
3733   if (table->v)
3734     free(table->v);
3735 }
3736
3737 static
3738 void hashTableInit(HASH_TABLE *p)
3739 {
3740   p->size = 0;
3741   p->usedLim = 0;
3742   p->used = 0;
3743   p->v = 0;
3744 }
3745
3746 static
3747 void hashTableIterInit(HASH_TABLE_ITER *iter, const HASH_TABLE *table)
3748 {
3749   iter->p = table->v;
3750   iter->end = iter->p + table->size;
3751 }
3752
3753 static
3754 NAMED *hashTableIterNext(HASH_TABLE_ITER *iter)
3755 {
3756   while (iter->p != iter->end) {
3757     NAMED *tem = *(iter->p)++;
3758     if (tem)
3759       return tem;
3760   }
3761   return 0;
3762 }
3763
3764
3765 static
3766 void poolInit(STRING_POOL *pool)
3767 {
3768   pool->blocks = 0;
3769   pool->freeBlocks = 0;
3770   pool->start = 0;
3771   pool->ptr = 0;
3772   pool->end = 0;
3773 }
3774
3775 static
3776 void poolClear(STRING_POOL *pool)
3777 {
3778   if (!pool->freeBlocks)
3779     pool->freeBlocks = pool->blocks;
3780   else {
3781     BLOCK *p = pool->blocks;
3782     while (p) {
3783       BLOCK *tem = p->next;
3784       p->next = pool->freeBlocks;
3785       pool->freeBlocks = p;
3786       p = tem;
3787     }
3788   }
3789   pool->blocks = 0;
3790   pool->start = 0;
3791   pool->ptr = 0;
3792   pool->end = 0;
3793 }
3794
3795 static
3796 void poolDestroy(STRING_POOL *pool)
3797 {
3798   BLOCK *p = pool->blocks;
3799   while (p) {
3800     BLOCK *tem = p->next;
3801     free(p);
3802     p = tem;
3803   }
3804   pool->blocks = 0;
3805   p = pool->freeBlocks;
3806   while (p) {
3807     BLOCK *tem = p->next;
3808     free(p);
3809     p = tem;
3810   }
3811   pool->freeBlocks = 0;
3812   pool->ptr = 0;
3813   pool->start = 0;
3814   pool->end = 0;
3815 }
3816
3817 static
3818 XML_Char *poolAppend(STRING_POOL *pool, const ENCODING *enc,
3819                      const char *ptr, const char *end)
3820 {
3821   if (!pool->ptr && !poolGrow(pool))
3822     return 0;
3823   for (;;) {
3824     XmlConvert(enc, &ptr, end, (ICHAR **)&(pool->ptr), (ICHAR *)pool->end);
3825     if (ptr == end)
3826       break;
3827     if (!poolGrow(pool))
3828       return 0;
3829   }
3830   return pool->start;
3831 }
3832
3833 static const XML_Char *poolCopyString(STRING_POOL *pool, const XML_Char *s)
3834 {
3835   do {
3836     if (!poolAppendChar(pool, *s))
3837       return 0;
3838   } while (*s++);
3839   s = pool->start;
3840   poolFinish(pool);
3841   return s;
3842 }
3843
3844 static const XML_Char *poolCopyStringN(STRING_POOL *pool, const XML_Char *s, int n)
3845 {
3846   if (!pool->ptr && !poolGrow(pool))
3847     return 0;
3848   for (; n > 0; --n, s++) {
3849     if (!poolAppendChar(pool, *s))
3850       return 0;
3851
3852   }
3853   s = pool->start;
3854   poolFinish(pool);
3855   return s;
3856 }
3857
3858 static
3859 XML_Char *poolStoreString(STRING_POOL *pool, const ENCODING *enc,
3860                           const char *ptr, const char *end)
3861 {
3862   if (!poolAppend(pool, enc, ptr, end))
3863     return 0;
3864   if (pool->ptr == pool->end && !poolGrow(pool))
3865     return 0;
3866   *(pool->ptr)++ = 0;
3867   return pool->start;
3868 }
3869
3870 static
3871 int poolGrow(STRING_POOL *pool)
3872 {
3873   if (pool->freeBlocks) {
3874     if (pool->start == 0) {
3875       pool->blocks = pool->freeBlocks;
3876       pool->freeBlocks = pool->freeBlocks->next;
3877       pool->blocks->next = 0;
3878       pool->start = pool->blocks->s;
3879       pool->end = pool->start + pool->blocks->size;
3880       pool->ptr = pool->start;
3881       return 1;
3882     }
3883     if (pool->end - pool->start < pool->freeBlocks->size) {
3884       BLOCK *tem = pool->freeBlocks->next;
3885       pool->freeBlocks->next = pool->blocks;
3886       pool->blocks = pool->freeBlocks;
3887       pool->freeBlocks = tem;
3888       memcpy(pool->blocks->s, pool->start, (pool->end - pool->start) * sizeof(XML_Char));
3889       pool->ptr = pool->blocks->s + (pool->ptr - pool->start);
3890       pool->start = pool->blocks->s;
3891       pool->end = pool->start + pool->blocks->size;
3892       return 1;
3893     }
3894   }
3895   if (pool->blocks && pool->start == pool->blocks->s) {
3896     int blockSize = (pool->end - pool->start)*2;
3897     pool->blocks = realloc(pool->blocks, offsetof(BLOCK, s) + blockSize * sizeof(XML_Char));
3898     if (!pool->blocks)
3899       return 0;
3900     pool->blocks->size = blockSize;
3901     pool->ptr = pool->blocks->s + (pool->ptr - pool->start);
3902     pool->start = pool->blocks->s;
3903     pool->end = pool->start + blockSize;
3904   }
3905   else {
3906     BLOCK *tem;
3907     int blockSize = pool->end - pool->start;
3908     if (blockSize < INIT_BLOCK_SIZE)
3909       blockSize = INIT_BLOCK_SIZE;
3910     else
3911       blockSize *= 2;
3912     tem = malloc(offsetof(BLOCK, s) + blockSize * sizeof(XML_Char));
3913     if (!tem)
3914       return 0;
3915     tem->size = blockSize;
3916     tem->next = pool->blocks;
3917     pool->blocks = tem;
3918     if (pool->ptr != pool->start)
3919       memcpy(tem->s, pool->start, (pool->ptr - pool->start) * sizeof(XML_Char));
3920     pool->ptr = tem->s + (pool->ptr - pool->start);
3921     pool->start = tem->s;
3922     pool->end = tem->s + blockSize;
3923   }
3924   return 1;
3925 }