lib/expat.h

   1 /* Copyright (c) 1998, 1999, 2000 Thai Open Source Software Center Ltd
   2    See the file COPYING for copying permission.
   3 */
   4
   5 #ifndef Expat_INCLUDED
   6 #define Expat_INCLUDED 1
   7
   8 #ifdef __VMS
   9 /*      0        1         2         3      0        1         2         3
  10         1234567890123456789012345678901     1234567890123456789012345678901 */
  11 #define XML_SetProcessingInstructionHandler XML_SetProcessingInstrHandler
  12 #define XML_SetUnparsedEntityDeclHandler    XML_SetUnparsedEntDeclHandler
  13 #define XML_SetStartNamespaceDeclHandler    XML_SetStartNamespcDeclHandler
  14 #define XML_SetExternalEntityRefHandlerArg  XML_SetExternalEntRefHandlerArg
  15 #endif
  16
  17 #include <stdlib.h>
  18 #include "expat_external.h"
  19
  20 #ifdef __cplusplus
  21 extern "C" {
  22 #endif
  23
  24 struct XML_ParserStruct;
  25 typedef struct XML_ParserStruct *XML_Parser;
  26
  27 /* Should this be defined using stdbool.h when C99 is available? */
  28 typedef unsigned char XML_Bool;
  29 #define XML_TRUE   ((XML_Bool) 1)
  30 #define XML_FALSE  ((XML_Bool) 0)
  31
  32 /* The XML_Status enum gives the possible return values for several
  33    API functions.  The preprocessor #defines are included so this
  34    stanza can be added to code that still needs to support older
  35    versions of Expat 1.95.x:
  36
  37    #ifndef XML_STATUS_OK
  38    #define XML_STATUS_OK    1
  39    #define XML_STATUS_ERROR 0
  40    #endif
  41
  42    Otherwise, the #define hackery is quite ugly and would have been
  43    dropped.
  44 */
  45 enum XML_Status {
  46   XML_STATUS_ERROR = 0,
  47 #define XML_STATUS_ERROR XML_STATUS_ERROR
  48   XML_STATUS_OK = 1,
  49 #define XML_STATUS_OK XML_STATUS_OK
  50   XML_STATUS_SUSPENDED = 2
  51 #define XML_STATUS_SUSPENDED XML_STATUS_SUSPENDED
  52 };
  53
  54 enum XML_Error {
  55   XML_ERROR_NONE,
  56   XML_ERROR_NO_MEMORY,
  57   XML_ERROR_SYNTAX,
  58   XML_ERROR_NO_ELEMENTS,
  59   XML_ERROR_INVALID_TOKEN,
  60   XML_ERROR_UNCLOSED_TOKEN,
  61   XML_ERROR_PARTIAL_CHAR,
  62   XML_ERROR_TAG_MISMATCH,
  63   XML_ERROR_DUPLICATE_ATTRIBUTE,
  64   XML_ERROR_JUNK_AFTER_DOC_ELEMENT,
  65   XML_ERROR_PARAM_ENTITY_REF,
  66   XML_ERROR_UNDEFINED_ENTITY,
  67   XML_ERROR_RECURSIVE_ENTITY_REF,
  68   XML_ERROR_ASYNC_ENTITY,
  69   XML_ERROR_BAD_CHAR_REF,
  70   XML_ERROR_BINARY_ENTITY_REF,
  71   XML_ERROR_ATTRIBUTE_EXTERNAL_ENTITY_REF,
  72   XML_ERROR_MISPLACED_XML_PI,
  73   XML_ERROR_UNKNOWN_ENCODING,
  74   XML_ERROR_INCORRECT_ENCODING,
  75   XML_ERROR_UNCLOSED_CDATA_SECTION,
  76   XML_ERROR_EXTERNAL_ENTITY_HANDLING,
  77   XML_ERROR_NOT_STANDALONE,
  78   XML_ERROR_UNEXPECTED_STATE,
  79   XML_ERROR_ENTITY_DECLARED_IN_PE,
  80   XML_ERROR_FEATURE_REQUIRES_XML_DTD,
  81   XML_ERROR_CANT_CHANGE_FEATURE_ONCE_PARSING,
  82   /* Added in 1.95.7. */
  83   XML_ERROR_UNBOUND_PREFIX,
  84   /* Added in 1.95.8. */
  85   XML_ERROR_UNDECLARING_PREFIX,
  86   XML_ERROR_INCOMPLETE_PE,
  87   XML_ERROR_XML_DECL,
  88   XML_ERROR_TEXT_DECL,
  89   XML_ERROR_PUBLICID,
  90   XML_ERROR_SUSPENDED,
  91   XML_ERROR_NOT_SUSPENDED,
  92   XML_ERROR_ABORTED,
  93   XML_ERROR_FINISHED,
  94   XML_ERROR_SUSPEND_PE,
  95   /* Added in 2.0. */
  96   XML_ERROR_RESERVED_PREFIX_XML,
  97   XML_ERROR_RESERVED_PREFIX_XMLNS,
  98   XML_ERROR_RESERVED_NAMESPACE_URI
  99 };
 100
 101 enum XML_Content_Type {
 102   XML_CTYPE_EMPTY = 1,
 103   XML_CTYPE_ANY,
 104   XML_CTYPE_MIXED,
 105   XML_CTYPE_NAME,
 106   XML_CTYPE_CHOICE,
 107   XML_CTYPE_SEQ
 108 };
 109
 110 enum XML_Content_Quant {
 111   XML_CQUANT_NONE,
 112   XML_CQUANT_OPT,
 113   XML_CQUANT_REP,
 114   XML_CQUANT_PLUS
 115 };
 116
 117 /* If type == XML_CTYPE_EMPTY or XML_CTYPE_ANY, then quant will be
 118    XML_CQUANT_NONE, and the other fields will be zero or NULL.
 119    If type == XML_CTYPE_MIXED, then quant will be NONE or REP and
 120    numchildren will contain number of elements that may be mixed in
 121    and children point to an array of XML_Content cells that will be
 122    all of XML_CTYPE_NAME type with no quantification.
 123
 124    If type == XML_CTYPE_NAME, then the name points to the name, and
 125    the numchildren field will be zero and children will be NULL. The
 126    quant fields indicates any quantifiers placed on the name.
 127
 128    CHOICE and SEQ will have name NULL, the number of children in
 129    numchildren and children will point, recursively, to an array
 130    of XML_Content cells.
 131
 132    The EMPTY, ANY, and MIXED types will only occur at top level.
 133 */
 134
 135 typedef struct XML_cp XML_Content;
 136
 137 struct XML_cp {
 138   enum XML_Content_Type         type;
 139   enum XML_Content_Quant        quant;
 140   XML_Char *                    name;
 141   unsigned int                  numchildren;
 142   XML_Content *                 children;
 143 };
 144
 145
 146 /* This is called for an element declaration. See above for
 147    description of the model argument. It's the caller's responsibility
 148    to free model when finished with it.
 149 */
 150 typedef void (XMLCALL *XML_ElementDeclHandler) (void *userData,
 151                                                 const XML_Char *name,
 152                                                 XML_Content *model);
 153
 154 XMLPARSEAPI(void)
 155 XML_SetElementDeclHandler(XML_Parser parser,
 156                           XML_ElementDeclHandler eldecl);
 157
 158 /* The Attlist declaration handler is called for *each* attribute. So
 159    a single Attlist declaration with multiple attributes declared will
 160    generate multiple calls to this handler. The "default" parameter
 161    may be NULL in the case of the "#IMPLIED" or "#REQUIRED"
 162    keyword. The "isrequired" parameter will be true and the default
 163    value will be NULL in the case of "#REQUIRED". If "isrequired" is
 164    true and default is non-NULL, then this is a "#FIXED" default.
 165 */
 166 typedef void (XMLCALL *XML_AttlistDeclHandler) (
 167                                     void            *userData,
 168                                     const XML_Char  *elname,
 169                                     const XML_Char  *attname,
 170                                     const XML_Char  *att_type,
 171                                     const XML_Char  *dflt,
 172                                     int              isrequired);
 173
 174 XMLPARSEAPI(void)
 175 XML_SetAttlistDeclHandler(XML_Parser parser,
 176                           XML_AttlistDeclHandler attdecl);
 177
 178 /* The XML declaration handler is called for *both* XML declarations
 179    and text declarations. The way to distinguish is that the version
 180    parameter will be NULL for text declarations. The encoding
 181    parameter may be NULL for XML declarations. The standalone
 182    parameter will be -1, 0, or 1 indicating respectively that there
 183    was no standalone parameter in the declaration, that it was given
 184    as no, or that it was given as yes.
 185 */
 186 typedef void (XMLCALL *XML_XmlDeclHandler) (void           *userData,
 187                                             const XML_Char *version,
 188                                             const XML_Char *encoding,
 189                                             int             standalone);
 190
 191 XMLPARSEAPI(void)
 192 XML_SetXmlDeclHandler(XML_Parser parser,
 193                       XML_XmlDeclHandler xmldecl);
 194
 195
 196 typedef struct {
 197   void *(*malloc_fcn)(size_t size);
 198   void *(*realloc_fcn)(void *ptr, size_t size);
 199   void (*free_fcn)(void *ptr);
 200 } XML_Memory_Handling_Suite;
 201
 202 /* Constructs a new parser; encoding is the encoding specified by the
 203    external protocol or NULL if there is none specified.
 204 */
 205 XMLPARSEAPI(XML_Parser)
 206 XML_ParserCreate(const XML_Char *encoding);
 207
 208 /* Constructs a new parser and namespace processor.  Element type
 209    names and attribute names that belong to a namespace will be
 210    expanded; unprefixed attribute names are never expanded; unprefixed
 211    element type names are expanded only if there is a default
 212    namespace. The expanded name is the concatenation of the namespace
 213    URI, the namespace separator character, and the local part of the
 214    name.  If the namespace separator is '\0' then the namespace URI
 215    and the local part will be concatenated without any separator.
 216    It is a programming error to use the separator '\0' with namespace
 217    triplets (see XML_SetReturnNSTriplet).
 218 */
 219 XMLPARSEAPI(XML_Parser)
 220 XML_ParserCreateNS(const XML_Char *encoding, XML_Char namespaceSeparator);
 221
 222
 223 /* Constructs a new parser using the memory management suite referred to
 224    by memsuite. If memsuite is NULL, then use the standard library memory
 225    suite. If namespaceSeparator is non-NULL it creates a parser with
 226    namespace processing as described above. The character pointed at
 227    will serve as the namespace separator.
 228
 229    All further memory operations used for the created parser will come from
 230    the given suite.
 231 */
 232 XMLPARSEAPI(XML_Parser)
 233 XML_ParserCreate_MM(const XML_Char *encoding,
 234                     const XML_Memory_Handling_Suite *memsuite,
 235                     const XML_Char *namespaceSeparator);
 236
 237 /* Prepare a parser object to be re-used.  This is particularly
 238    valuable when memory allocation overhead is disproportionatly high,
 239    such as when a large number of small documnents need to be parsed.
 240    All handlers are cleared from the parser, except for the
 241    unknownEncodingHandler. The parser's external state is re-initialized
 242    except for the values of ns and ns_triplets.
 243
 244    Added in Expat 1.95.3.
 245 */
 246 XMLPARSEAPI(XML_Bool)
 247 XML_ParserReset(XML_Parser parser, const XML_Char *encoding);
 248
 249 /* atts is array of name/value pairs, terminated by 0;
 250    names and values are 0 terminated.
 251 */
 252 typedef void (XMLCALL *XML_StartElementHandler) (void *userData,
 253                                                  const XML_Char *name,
 254                                                  const XML_Char **atts);
 255
 256 typedef void (XMLCALL *XML_EndElementHandler) (void *userData,
 257                                                const XML_Char *name);
 258
 259
 260 /* s is not 0 terminated. */
 261 typedef void (XMLCALL *XML_CharacterDataHandler) (void *userData,
 262                                                   const XML_Char *s,
 263                                                   int len);
 264
 265 /* target and data are 0 terminated */
 266 typedef void (XMLCALL *XML_ProcessingInstructionHandler) (
 267                                                 void *userData,
 268                                                 const XML_Char *target,
 269                                                 const XML_Char *data);
 270
 271 /* data is 0 terminated */
 272 typedef void (XMLCALL *XML_CommentHandler) (void *userData,
 273                                             const XML_Char *data);
 274
 275 typedef void (XMLCALL *XML_StartCdataSectionHandler) (void *userData);
 276 typedef void (XMLCALL *XML_EndCdataSectionHandler) (void *userData);
 277
 278 /* This is called for any characters in the XML document for which
 279    there is no applicable handler.  This includes both characters that
 280    are part of markup which is of a kind that is not reported
 281    (comments, markup declarations), or characters that are part of a
 282    construct which could be reported but for which no handler has been
 283    supplied. The characters are passed exactly as they were in the XML
 284    document except that they will be encoded in UTF-8 or UTF-16.
 285    Line boundaries are not normalized. Note that a byte order mark
 286    character is not passed to the default handler. There are no
 287    guarantees about how characters are divided between calls to the
 288    default handler: for example, a comment might be split between
 289    multiple calls.
 290 */
 291 typedef void (XMLCALL *XML_DefaultHandler) (void *userData,
 292                                             const XML_Char *s,
 293                                             int len);
 294
 295 /* This is called for the start of the DOCTYPE declaration, before
 296    any DTD or internal subset is parsed.
 297 */
 298 typedef void (XMLCALL *XML_StartDoctypeDeclHandler) (
 299                                             void *userData,
 300                                             const XML_Char *doctypeName,
 301                                             const XML_Char *sysid,
 302                                             const XML_Char *pubid,
 303                                             int has_internal_subset);
 304
 305 /* This is called for the start of the DOCTYPE declaration when the
 306    closing > is encountered, but after processing any external
 307    subset.
 308 */
 309 typedef void (XMLCALL *XML_EndDoctypeDeclHandler)(void *userData);
 310
 311 /* This is called for entity declarations. The is_parameter_entity
 312    argument will be non-zero if the entity is a parameter entity, zero
 313    otherwise.
 314
 315    For internal entities (<!ENTITY foo "bar">), value will
 316    be non-NULL and systemId, publicID, and notationName will be NULL.
 317    The value string is NOT nul-terminated; the length is provided in
 318    the value_length argument. Since it is legal to have zero-length
 319    values, do not use this argument to test for internal entities.
 320
 321    For external entities, value will be NULL and systemId will be
 322    non-NULL. The publicId argument will be NULL unless a public
 323    identifier was provided. The notationName argument will have a
 324    non-NULL value only for unparsed entity declarations.
 325
 326    Note that is_parameter_entity can't be changed to XML_Bool, since
 327    that would break binary compatibility.
 328 */
 329 typedef void (XMLCALL *XML_EntityDeclHandler) (
 330                               void *userData,
 331                               const XML_Char *entityName,
 332                               int is_parameter_entity,
 333                               const XML_Char *value,
 334                               int value_length,
 335                               const XML_Char *base,
 336                               const XML_Char *systemId,
 337                               const XML_Char *publicId,
 338                               const XML_Char *notationName);
 339
 340 XMLPARSEAPI(void)
 341 XML_SetEntityDeclHandler(XML_Parser parser,
 342                          XML_EntityDeclHandler handler);
 343
 344 /* OBSOLETE -- OBSOLETE -- OBSOLETE
 345    This handler has been superceded by the EntityDeclHandler above.
 346    It is provided here for backward compatibility.
 347
 348    This is called for a declaration of an unparsed (NDATA) entity.
 349    The base argument is whatever was set by XML_SetBase. The
 350    entityName, systemId and notationName arguments will never be
 351    NULL. The other arguments may be.
 352 */
 353 typedef void (XMLCALL *XML_UnparsedEntityDeclHandler) (
 354                                     void *userData,
 355                                     const XML_Char *entityName,
 356                                     const XML_Char *base,
 357                                     const XML_Char *systemId,
 358                                     const XML_Char *publicId,
 359                                     const XML_Char *notationName);
 360
 361 /* This is called for a declaration of notation.  The base argument is
 362    whatever was set by XML_SetBase. The notationName will never be
 363    NULL.  The other arguments can be.
 364 */
 365 typedef void (XMLCALL *XML_NotationDeclHandler) (
 366                                     void *userData,
 367                                     const XML_Char *notationName,
 368                                     const XML_Char *base,
 369                                     const XML_Char *systemId,
 370                                     const XML_Char *publicId);
 371
 372 /* When namespace processing is enabled, these are called once for
 373    each namespace declaration. The call to the start and end element
 374    handlers occur between the calls to the start and end namespace
 375    declaration handlers. For an xmlns attribute, prefix will be
 376    NULL.  For an xmlns="" attribute, uri will be NULL.
 377 */
 378 typedef void (XMLCALL *XML_StartNamespaceDeclHandler) (
 379                                     void *userData,
 380                                     const XML_Char *prefix,
 381                                     const XML_Char *uri);
 382
 383 typedef void (XMLCALL *XML_EndNamespaceDeclHandler) (
 384                                     void *userData,
 385                                     const XML_Char *prefix);
 386
 387 /* This is called if the document is not standalone, that is, it has an
 388    external subset or a reference to a parameter entity, but does not
 389    have standalone="yes". If this handler returns XML_STATUS_ERROR,
 390    then processing will not continue, and the parser will return a
 391    XML_ERROR_NOT_STANDALONE error.
 392    If parameter entity parsing is enabled, then in addition to the
 393    conditions above this handler will only be called if the referenced
 394    entity was actually read.
 395 */
 396 typedef int (XMLCALL *XML_NotStandaloneHandler) (void *userData);
 397
 398 /* This is called for a reference to an external parsed general
 399    entity.  The referenced entity is not automatically parsed.  The
 400    application can parse it immediately or later using
 401    XML_ExternalEntityParserCreate.
 402
 403    The parser argument is the parser parsing the entity containing the
 404    reference; it can be passed as the parser argument to
 405    XML_ExternalEntityParserCreate.  The systemId argument is the
 406    system identifier as specified in the entity declaration; it will
 407    not be NULL.
 408
 409    The base argument is the system identifier that should be used as
 410    the base for resolving systemId if systemId was relative; this is
 411    set by XML_SetBase; it may be NULL.
 412
 413    The publicId argument is the public identifier as specified in the
 414    entity declaration, or NULL if none was specified; the whitespace
 415    in the public identifier will have been normalized as required by
 416    the XML spec.
 417
 418    The context argument specifies the parsing context in the format
 419    expected by the context argument to XML_ExternalEntityParserCreate;
 420    context is valid only until the handler returns, so if the
 421    referenced entity is to be parsed later, it must be copied.
 422    context is NULL only when the entity is a parameter entity.
 423
 424    The handler should return XML_STATUS_ERROR if processing should not
 425    continue because of a fatal error in the handling of the external
 426    entity.  In this case the calling parser will return an
 427    XML_ERROR_EXTERNAL_ENTITY_HANDLING error.
 428
 429    Note that unlike other handlers the first argument is the parser,
 430    not userData.
 431 */
 432 typedef int (XMLCALL *XML_ExternalEntityRefHandler) (
 433                                     XML_Parser parser,
 434                                     const XML_Char *context,
 435                                     const XML_Char *base,
 436                                     const XML_Char *systemId,
 437                                     const XML_Char *publicId);
 438
 439 /* This is called in two situations:
 440    1) An entity reference is encountered for which no declaration
 441       has been read *and* this is not an error.
 442    2) An internal entity reference is read, but not expanded, because
 443       XML_SetDefaultHandler has been called.
 444    Note: skipped parameter entities in declarations and skipped general
 445          entities in attribute values cannot be reported, because
 446          the event would be out of sync with the reporting of the
 447          declarations or attribute values
 448 */
 449 typedef void (XMLCALL *XML_SkippedEntityHandler) (
 450                                     void *userData,
 451                                     const XML_Char *entityName,
 452                                     int is_parameter_entity);
 453
 454 /* This structure is filled in by the XML_UnknownEncodingHandler to
 455    provide information to the parser about encodings that are unknown
 456    to the parser.
 457
 458    The map[b] member gives information about byte sequences whose
 459    first byte is b.
 460
 461    If map[b] is c where c is >= 0, then b by itself encodes the
 462    Unicode scalar value c.
 463
 464    If map[b] is -1, then the byte sequence is malformed.
 465
 466    If map[b] is -n, where n >= 2, then b is the first byte of an
 467    n-byte sequence that encodes a single Unicode scalar value.
 468
 469    The data member will be passed as the first argument to the convert
 470    function.
 471
 472    The convert function is used to convert multibyte sequences; s will
 473    point to a n-byte sequence where map[(unsigned char)*s] == -n.  The
 474    convert function must return the Unicode scalar value represented
 475    by this byte sequence or -1 if the byte sequence is malformed.
 476
 477    The convert function may be NULL if the encoding is a single-byte
 478    encoding, that is if map[b] >= -1 for all bytes b.
 479
 480    When the parser is finished with the encoding, then if release is
 481    not NULL, it will call release passing it the data member; once
 482    release has been called, the convert function will not be called
 483    again.
 484
 485    Expat places certain restrictions on the encodings that are supported
 486    using this mechanism.
 487
 488    1. Every ASCII character that can appear in a well-formed XML document,
 489       other than the characters
 490
 491       $@\^`{}~
 492
 493       must be represented by a single byte, and that byte must be the
 494       same byte that represents that character in ASCII.
 495
 496    2. No character may require more than 4 bytes to encode.
 497
 498    3. All characters encoded must have Unicode scalar values <=
 499       0xFFFF, (i.e., characters that would be encoded by surrogates in
 500       UTF-16 are  not allowed).  Note that this restriction doesn't
 501       apply to the built-in support for UTF-8 and UTF-16.
 502
 503    4. No Unicode character may be encoded by more than one distinct
 504       sequence of bytes.
 505 */
 506 typedef struct {
 507   int map[256];
 508   void *data;
 509   int (XMLCALL *convert)(void *data, const char *s);
 510   void (XMLCALL *release)(void *data);
 511 } XML_Encoding;
 512
 513 /* This is called for an encoding that is unknown to the parser.
 514
 515    The encodingHandlerData argument is that which was passed as the
 516    second argument to XML_SetUnknownEncodingHandler.
 517
 518    The name argument gives the name of the encoding as specified in
 519    the encoding declaration.
 520
 521    If the callback can provide information about the encoding, it must
 522    fill in the XML_Encoding structure, and return XML_STATUS_OK.
 523    Otherwise it must return XML_STATUS_ERROR.
 524
 525    If info does not describe a suitable encoding, then the parser will
 526    return an XML_UNKNOWN_ENCODING error.
 527 */
 528 typedef int (XMLCALL *XML_UnknownEncodingHandler) (
 529                                     void *encodingHandlerData,
 530                                     const XML_Char *name,
 531                                     XML_Encoding *info);
 532
 533 XMLPARSEAPI(void)
 534 XML_SetElementHandler(XML_Parser parser,
 535                       XML_StartElementHandler start,
 536                       XML_EndElementHandler end);
 537
 538 XMLPARSEAPI(void)
 539 XML_SetStartElementHandler(XML_Parser parser,
 540                            XML_StartElementHandler handler);
 541
 542 XMLPARSEAPI(void)
 543 XML_SetEndElementHandler(XML_Parser parser,
 544                          XML_EndElementHandler handler);
 545
 546 XMLPARSEAPI(void)
 547 XML_SetCharacterDataHandler(XML_Parser parser,
 548                             XML_CharacterDataHandler handler);
 549
 550 XMLPARSEAPI(void)
 551 XML_SetProcessingInstructionHandler(XML_Parser parser,
 552                                     XML_ProcessingInstructionHandler handler);
 553 XMLPARSEAPI(void)
 554 XML_SetCommentHandler(XML_Parser parser,
 555                       XML_CommentHandler handler);
 556
 557 XMLPARSEAPI(void)
 558 XML_SetCdataSectionHandler(XML_Parser parser,
 559                            XML_StartCdataSectionHandler start,
 560                            XML_EndCdataSectionHandler end);
 561
 562 XMLPARSEAPI(void)
 563 XML_SetStartCdataSectionHandler(XML_Parser parser,
 564                                 XML_StartCdataSectionHandler start);
 565
 566 XMLPARSEAPI(void)
 567 XML_SetEndCdataSectionHandler(XML_Parser parser,
 568                               XML_EndCdataSectionHandler end);
 569
 570 /* This sets the default handler and also inhibits expansion of
 571    internal entities. These entity references will be passed to the
 572    default handler, or to the skipped entity handler, if one is set.
 573 */
 574 XMLPARSEAPI(void)
 575 XML_SetDefaultHandler(XML_Parser parser,
 576                       XML_DefaultHandler handler);
 577
 578 /* This sets the default handler but does not inhibit expansion of
 579    internal entities.  The entity reference will not be passed to the
 580    default handler.
 581 */
 582 XMLPARSEAPI(void)
 583 XML_SetDefaultHandlerExpand(XML_Parser parser,
 584                             XML_DefaultHandler handler);
 585
 586 XMLPARSEAPI(void)
 587 XML_SetDoctypeDeclHandler(XML_Parser parser,
 588                           XML_StartDoctypeDeclHandler start,
 589                           XML_EndDoctypeDeclHandler end);
 590
 591 XMLPARSEAPI(void)
 592 XML_SetStartDoctypeDeclHandler(XML_Parser parser,
 593                                XML_StartDoctypeDeclHandler start);
 594
 595 XMLPARSEAPI(void)
 596 XML_SetEndDoctypeDeclHandler(XML_Parser parser,
 597                              XML_EndDoctypeDeclHandler end);
 598
 599 XMLPARSEAPI(void)
 600 XML_SetUnparsedEntityDeclHandler(XML_Parser parser,
 601                                  XML_UnparsedEntityDeclHandler handler);
 602
 603 XMLPARSEAPI(void)
 604 XML_SetNotationDeclHandler(XML_Parser parser,
 605                            XML_NotationDeclHandler handler);
 606
 607 XMLPARSEAPI(void)
 608 XML_SetNamespaceDeclHandler(XML_Parser parser,
 609                             XML_StartNamespaceDeclHandler start,
 610                             XML_EndNamespaceDeclHandler end);
 611
 612 XMLPARSEAPI(void)
 613 XML_SetStartNamespaceDeclHandler(XML_Parser parser,
 614                                  XML_StartNamespaceDeclHandler start);
 615
 616 XMLPARSEAPI(void)
 617 XML_SetEndNamespaceDeclHandler(XML_Parser parser,
 618                                XML_EndNamespaceDeclHandler end);
 619
 620 XMLPARSEAPI(void)
 621 XML_SetNotStandaloneHandler(XML_Parser parser,
 622                             XML_NotStandaloneHandler handler);
 623
 624 XMLPARSEAPI(void)
 625 XML_SetExternalEntityRefHandler(XML_Parser parser,
 626                                 XML_ExternalEntityRefHandler handler);
 627
 628 /* If a non-NULL value for arg is specified here, then it will be
 629    passed as the first argument to the external entity ref handler
 630    instead of the parser object.
 631 */
 632 XMLPARSEAPI(void)
 633 XML_SetExternalEntityRefHandlerArg(XML_Parser parser,
 634                                    void *arg);
 635
 636 XMLPARSEAPI(void)
 637 XML_SetSkippedEntityHandler(XML_Parser parser,
 638                             XML_SkippedEntityHandler handler);
 639
 640 XMLPARSEAPI(void)
 641 XML_SetUnknownEncodingHandler(XML_Parser parser,
 642                               XML_UnknownEncodingHandler handler,
 643                               void *encodingHandlerData);
 644
 645 /* This can be called within a handler for a start element, end
 646    element, processing instruction or character data.  It causes the
 647    corresponding markup to be passed to the default handler.
 648 */
 649 XMLPARSEAPI(void)
 650 XML_DefaultCurrent(XML_Parser parser);
 651
 652 /* If do_nst is non-zero, and namespace processing is in effect, and
 653    a name has a prefix (i.e. an explicit namespace qualifier) then
 654    that name is returned as a triplet in a single string separated by
 655    the separator character specified when the parser was created: URI
 656    + sep + local_name + sep + prefix.
 657
 658    If do_nst is zero, then namespace information is returned in the
 659    default manner (URI + sep + local_name) whether or not the name
 660    has a prefix.
 661
 662    Note: Calling XML_SetReturnNSTriplet after XML_Parse or
 663      XML_ParseBuffer has no effect.
 664 */
 665
 666 XMLPARSEAPI(void)
 667 XML_SetReturnNSTriplet(XML_Parser parser, int do_nst);
 668
 669 /* This value is passed as the userData argument to callbacks. */
 670 XMLPARSEAPI(void)
 671 XML_SetUserData(XML_Parser parser, void *userData);
 672
 673 /* Returns the last value set by XML_SetUserData or NULL. */
 674 #define XML_GetUserData(parser) (*(void **)(parser))
 675
 676 /* This is equivalent to supplying an encoding argument to
 677    XML_ParserCreate. On success XML_SetEncoding returns non-zero,
 678    zero otherwise.
 679    Note: Calling XML_SetEncoding after XML_Parse or XML_ParseBuffer
 680      has no effect and returns XML_STATUS_ERROR.
 681 */
 682 XMLPARSEAPI(enum XML_Status)
 683 XML_SetEncoding(XML_Parser parser, const XML_Char *encoding);
 684
 685 /* If this function is called, then the parser will be passed as the
 686    first argument to callbacks instead of userData.  The userData will
 687    still be accessible using XML_GetUserData.
 688 */
 689 XMLPARSEAPI(void)
 690 XML_UseParserAsHandlerArg(XML_Parser parser);
 691
 692 /* If useDTD == XML_TRUE is passed to this function, then the parser
 693    will assume that there is an external subset, even if none is
 694    specified in the document. In such a case the parser will call the
 695    externalEntityRefHandler with a value of NULL for the systemId
 696    argument (the publicId and context arguments will be NULL as well).
 697    Note: For the purpose of checking WFC: Entity Declared, passing
 698      useDTD == XML_TRUE will make the parser behave as if the document
 699      had a DTD with an external subset.
 700    Note: If this function is called, then this must be done before
 701      the first call to XML_Parse or XML_ParseBuffer, since it will
 702      have no effect after that.  Returns
 703      XML_ERROR_CANT_CHANGE_FEATURE_ONCE_PARSING.
 704    Note: If the document does not have a DOCTYPE declaration at all,
 705      then startDoctypeDeclHandler and endDoctypeDeclHandler will not
 706      be called, despite an external subset being parsed.
 707    Note: If XML_DTD is not defined when Expat is compiled, returns
 708      XML_ERROR_FEATURE_REQUIRES_XML_DTD.
 709 */
 710 XMLPARSEAPI(enum XML_Error)
 711 XML_UseForeignDTD(XML_Parser parser, XML_Bool useDTD);
 712
 713
 714 /* Sets the base to be used for resolving relative URIs in system
 715    identifiers in declarations.  Resolving relative identifiers is
 716    left to the application: this value will be passed through as the
 717    base argument to the XML_ExternalEntityRefHandler,
 718    XML_NotationDeclHandler and XML_UnparsedEntityDeclHandler. The base
 719    argument will be copied.  Returns XML_STATUS_ERROR if out of memory,
 720    XML_STATUS_OK otherwise.
 721 */
 722 XMLPARSEAPI(enum XML_Status)
 723 XML_SetBase(XML_Parser parser, const XML_Char *base);
 724
 725 XMLPARSEAPI(const XML_Char *)
 726 XML_GetBase(XML_Parser parser);
 727
 728 /* Returns the number of the attribute/value pairs passed in last call
 729    to the XML_StartElementHandler that were specified in the start-tag
 730    rather than defaulted. Each attribute/value pair counts as 2; thus
 731    this correspondds to an index into the atts array passed to the
 732    XML_StartElementHandler.
 733 */
 734 XMLPARSEAPI(int)
 735 XML_GetSpecifiedAttributeCount(XML_Parser parser);
 736
 737 /* Returns the index of the ID attribute passed in the last call to
 738    XML_StartElementHandler, or -1 if there is no ID attribute.  Each
 739    attribute/value pair counts as 2; thus this correspondds to an
 740    index into the atts array passed to the XML_StartElementHandler.
 741 */
 742 XMLPARSEAPI(int)
 743 XML_GetIdAttributeIndex(XML_Parser parser);
 744
 745 /* Parses some input. Returns XML_STATUS_ERROR if a fatal error is
 746    detected.  The last call to XML_Parse must have isFinal true; len
 747    may be zero for this call (or any other).
 748
 749    Though the return values for these functions has always been
 750    described as a Boolean value, the implementation, at least for the
 751    1.95.x series, has always returned exactly one of the XML_Status
 752    values.
 753 */
 754 XMLPARSEAPI(enum XML_Status)
 755 XML_Parse(XML_Parser parser, const char *s, int len, int isFinal);
 756
 757 XMLPARSEAPI(void *)
 758 XML_GetBuffer(XML_Parser parser, int len);
 759
 760 XMLPARSEAPI(enum XML_Status)
 761 XML_ParseBuffer(XML_Parser parser, int len, int isFinal);
 762
 763 /* Stops parsing, causing XML_Parse() or XML_ParseBuffer() to return.
 764    Must be called from within a call-back handler, except when aborting
 765    (resumable = 0) an already suspended parser. Some call-backs may
 766    still follow because they would otherwise get lost. Examples:
 767    - endElementHandler() for empty elements when stopped in
 768      startElementHandler(),
 769    - endNameSpaceDeclHandler() when stopped in endElementHandler(),
 770    and possibly others.
 771
 772    Can be called from most handlers, including DTD related call-backs,
 773    except when parsing an external parameter entity and resumable != 0.
 774    Returns XML_STATUS_OK when successful, XML_STATUS_ERROR otherwise.
 775    Possible error codes:
 776    - XML_ERROR_SUSPENDED: when suspending an already suspended parser.
 777    - XML_ERROR_FINISHED: when the parser has already finished.
 778    - XML_ERROR_SUSPEND_PE: when suspending while parsing an external PE.
 779
 780    When resumable != 0 (true) then parsing is suspended, that is,
 781    XML_Parse() and XML_ParseBuffer() return XML_STATUS_SUSPENDED.
 782    Otherwise, parsing is aborted, that is, XML_Parse() and XML_ParseBuffer()
 783    return XML_STATUS_ERROR with error code XML_ERROR_ABORTED.
 784
 785    *Note*:
 786    This will be applied to the current parser instance only, that is, if
 787    there is a parent parser then it will continue parsing when the
 788    externalEntityRefHandler() returns. It is up to the implementation of
 789    the externalEntityRefHandler() to call XML_StopParser() on the parent
 790    parser (recursively), if one wants to stop parsing altogether.
 791
 792    When suspended, parsing can be resumed by calling XML_ResumeParser().
 793 */
 794 XMLPARSEAPI(enum XML_Status)
 795 XML_StopParser(XML_Parser parser, XML_Bool resumable);
 796
 797 /* Resumes parsing after it has been suspended with XML_StopParser().
 798    Must not be called from within a handler call-back. Returns same
 799    status codes as XML_Parse() or XML_ParseBuffer().
 800    Additional error code XML_ERROR_NOT_SUSPENDED possible.
 801
 802    *Note*:
 803    This must be called on the most deeply nested child parser instance
 804    first, and on its parent parser only after the child parser has finished,
 805    to be applied recursively until the document entity's parser is restarted.
 806    That is, the parent parser will not resume by itself and it is up to the
 807    application to call XML_ResumeParser() on it at the appropriate moment.
 808 */
 809 XMLPARSEAPI(enum XML_Status)
 810 XML_ResumeParser(XML_Parser parser);
 811
 812 enum XML_Parsing {
 813   XML_INITIALIZED,
 814   XML_PARSING,
 815   XML_FINISHED,
 816   XML_SUSPENDED
 817 };
 818
 819 typedef struct {
 820   enum XML_Parsing parsing;
 821   XML_Bool finalBuffer;
 822 } XML_ParsingStatus;
 823
 824 /* Returns status of parser with respect to being initialized, parsing,
 825    finished, or suspended and processing the final buffer.
 826    XXX XML_Parse() and XML_ParseBuffer() should return XML_ParsingStatus,
 827    XXX with XML_FINISHED_OK or XML_FINISHED_ERROR replacing XML_FINISHED
 828 */
 829 XMLPARSEAPI(void)
 830 XML_GetParsingStatus(XML_Parser parser, XML_ParsingStatus *status);
 831
 832 /* Creates an XML_Parser object that can parse an external general
 833    entity; context is a '\0'-terminated string specifying the parse
 834    context; encoding is a '\0'-terminated string giving the name of
 835    the externally specified encoding, or NULL if there is no
 836    externally specified encoding.  The context string consists of a
 837    sequence of tokens separated by formfeeds (\f); a token consisting
 838    of a name specifies that the general entity of the name is open; a
 839    token of the form prefix=uri specifies the namespace for a
 840    particular prefix; a token of the form =uri specifies the default
 841    namespace.  This can be called at any point after the first call to
 842    an ExternalEntityRefHandler so longer as the parser has not yet
 843    been freed.  The new parser is completely independent and may
 844    safely be used in a separate thread.  The handlers and userData are
 845    initialized from the parser argument.  Returns NULL if out of memory.
 846    Otherwise returns a new XML_Parser object.
 847 */
 848 XMLPARSEAPI(XML_Parser)
 849 XML_ExternalEntityParserCreate(XML_Parser parser,
 850                                const XML_Char *context,
 851                                const XML_Char *encoding);
 852
 853 enum XML_ParamEntityParsing {
 854   XML_PARAM_ENTITY_PARSING_NEVER,
 855   XML_PARAM_ENTITY_PARSING_UNLESS_STANDALONE,
 856   XML_PARAM_ENTITY_PARSING_ALWAYS
 857 };
 858
 859 /* Controls parsing of parameter entities (including the external DTD
 860    subset). If parsing of parameter entities is enabled, then
 861    references to external parameter entities (including the external
 862    DTD subset) will be passed to the handler set with
 863    XML_SetExternalEntityRefHandler.  The context passed will be 0.
 864
 865    Unlike external general entities, external parameter entities can
 866    only be parsed synchronously.  If the external parameter entity is
 867    to be parsed, it must be parsed during the call to the external
 868    entity ref handler: the complete sequence of
 869    XML_ExternalEntityParserCreate, XML_Parse/XML_ParseBuffer and
 870    XML_ParserFree calls must be made during this call.  After
 871    XML_ExternalEntityParserCreate has been called to create the parser
 872    for the external parameter entity (context must be 0 for this
 873    call), it is illegal to make any calls on the old parser until
 874    XML_ParserFree has been called on the newly created parser.
 875    If the library has been compiled without support for parameter
 876    entity parsing (ie without XML_DTD being defined), then
 877    XML_SetParamEntityParsing will return 0 if parsing of parameter
 878    entities is requested; otherwise it will return non-zero.
 879    Note: If XML_SetParamEntityParsing is called after XML_Parse or
 880       XML_ParseBuffer, then it has no effect and will always return 0.
 881 */
 882 XMLPARSEAPI(int)
 883 XML_SetParamEntityParsing(XML_Parser parser,
 884                           enum XML_ParamEntityParsing parsing);
 885
 886 /* If XML_Parse or XML_ParseBuffer have returned XML_STATUS_ERROR, then
 887    XML_GetErrorCode returns information about the error.
 888 */
 889 XMLPARSEAPI(enum XML_Error)
 890 XML_GetErrorCode(XML_Parser parser);
 891
 892 /* These functions return information about the current parse
 893    location.  They may be called from any callback called to report
 894    some parse event; in this case the location is the location of the
 895    first of the sequence of characters that generated the event.  When
 896    called from callbacks generated by declarations in the document
 897    prologue, the location identified isn't as neatly defined, but will
 898    be within the relevant markup.  When called outside of the callback
 899    functions, the position indicated will be just past the last parse
 900    event (regardless of whether there was an associated callback).
 901
 902    They may also be called after returning from a call to XML_Parse
 903    or XML_ParseBuffer.  If the return value is XML_STATUS_ERROR then
 904    the location is the location of the character at which the error
 905    was detected; otherwise the location is the location of the last
 906    parse event, as described above.
 907 */
 908 XMLPARSEAPI(XML_Size) XML_GetCurrentLineNumber(XML_Parser parser);
 909 XMLPARSEAPI(XML_Size) XML_GetCurrentColumnNumber(XML_Parser parser);
 910 XMLPARSEAPI(XML_Index) XML_GetCurrentByteIndex(XML_Parser parser);
 911
 912 /* Return the number of bytes in the current event.
 913    Returns 0 if the event is in an internal entity.
 914 */
 915 XMLPARSEAPI(int)
 916 XML_GetCurrentByteCount(XML_Parser parser);
 917
 918 /* If XML_CONTEXT_BYTES is defined, returns the input buffer, sets
 919    the integer pointed to by offset to the offset within this buffer
 920    of the current parse position, and sets the integer pointed to by size
 921    to the size of this buffer (the number of input bytes). Otherwise
 922    returns a NULL pointer. Also returns a NULL pointer if a parse isn't
 923    active.
 924
 925    NOTE: The character pointer returned should not be used outside
 926    the handler that makes the call.
 927 */
 928 XMLPARSEAPI(const char *)
 929 XML_GetInputContext(XML_Parser parser,
 930                     int *offset,
 931                     int *size);
 932
 933 /* For backwards compatibility with previous versions. */
 934 #define XML_GetErrorLineNumber   XML_GetCurrentLineNumber
 935 #define XML_GetErrorColumnNumber XML_GetCurrentColumnNumber
 936 #define XML_GetErrorByteIndex    XML_GetCurrentByteIndex
 937
 938 /* Frees the content model passed to the element declaration handler */
 939 XMLPARSEAPI(void)
 940 XML_FreeContentModel(XML_Parser parser, XML_Content *model);
 941
 942 /* Exposing the memory handling functions used in Expat */
 943 XMLPARSEAPI(void *)
 944 XML_MemMalloc(XML_Parser parser, size_t size);
 945
 946 XMLPARSEAPI(void *)
 947 XML_MemRealloc(XML_Parser parser, void *ptr, size_t size);
 948
 949 XMLPARSEAPI(void)
 950 XML_MemFree(XML_Parser parser, void *ptr);
 951
 952 /* Frees memory used by the parser. */
 953 XMLPARSEAPI(void)
 954 XML_ParserFree(XML_Parser parser);
 955
 956 /* Returns a string describing the error. */
 957 XMLPARSEAPI(const XML_LChar *)
 958 XML_ErrorString(enum XML_Error code);
 959
 960 /* Return a string containing the version number of this expat */
 961 XMLPARSEAPI(const XML_LChar *)
 962 XML_ExpatVersion(void);
 963
 964 typedef struct {
 965   int major;
 966   int minor;
 967   int micro;
 968 } XML_Expat_Version;
 969
 970 /* Return an XML_Expat_Version structure containing numeric version
 971    number information for this version of expat.
 972 */
 973 XMLPARSEAPI(XML_Expat_Version)
 974 XML_ExpatVersionInfo(void);
 975
 976 /* Added in Expat 1.95.5. */
 977 enum XML_FeatureEnum {
 978   XML_FEATURE_END = 0,
 979   XML_FEATURE_UNICODE,
 980   XML_FEATURE_UNICODE_WCHAR_T,
 981   XML_FEATURE_DTD,
 982   XML_FEATURE_CONTEXT_BYTES,
 983   XML_FEATURE_MIN_SIZE,
 984   XML_FEATURE_SIZEOF_XML_CHAR,
 985   XML_FEATURE_SIZEOF_XML_LCHAR,
 986   XML_FEATURE_NS,
 987   XML_FEATURE_LARGE_SIZE
 988   /* Additional features must be added to the end of this enum. */
 989 };
 990
 991 typedef struct {
 992   enum XML_FeatureEnum  feature;
 993   const XML_LChar       *name;
 994   long int              value;
 995 } XML_Feature;
 996
 997 XMLPARSEAPI(const XML_Feature *)
 998 XML_GetFeatureList(void);
 999
1000
1001 /* Expat follows the GNU/Linux convention of odd number minor version for
1002    beta/development releases and even number minor version for stable
1003    releases. Micro is bumped with each release, and set to 0 with each
1004    change to major or minor version.
1005 */
1006 #define XML_MAJOR_VERSION 2
1007 #define XML_MINOR_VERSION 0
1008 #define XML_MICRO_VERSION 0
1009
1010 #ifdef __cplusplus
1011 }
1012 #endif
1013
1014 #endif /* not Expat_INCLUDED */