xmlparse.h
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上传日期:2013-07-19
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文件大小:21k
- /*
- Copyright (c) 1998, 1999, 2000 Thai Open Source Software Center Ltd
- See the file copying.txt for copying permission.
- */
- #ifndef XmlParse_INCLUDED
- #define XmlParse_INCLUDED 1
- #ifdef __cplusplus
- extern "C" {
- #endif
- #ifndef XMLPARSEAPI
- #define XMLPARSEAPI /* as nothing */
- #endif
- typedef void *XML_Parser;
- #ifdef XML_UNICODE_WCHAR_T
- /* XML_UNICODE_WCHAR_T will work only if sizeof(wchar_t) == 2 and wchar_t
- uses Unicode. */
- /* Information is UTF-16 encoded as wchar_ts */
- #ifndef XML_UNICODE
- #define XML_UNICODE
- #endif
- #include <stddef.h>
- typedef wchar_t XML_Char;
- typedef wchar_t XML_LChar;
- #else /* not XML_UNICODE_WCHAR_T */
- #ifdef XML_UNICODE
- /* Information is UTF-16 encoded as unsigned shorts */
- typedef unsigned short XML_Char;
- typedef char XML_LChar;
- #else /* not XML_UNICODE */
- /* Information is UTF-8 encoded. */
- typedef char XML_Char;
- typedef char XML_LChar;
- #endif /* not XML_UNICODE */
- #endif /* not XML_UNICODE_WCHAR_T */
- /* Constructs a new parser; encoding is the encoding specified by the external
- protocol or null if there is none specified. */
- XML_Parser XMLPARSEAPI
- XML_ParserCreate(const XML_Char *encoding);
- /* Constructs a new parser and namespace processor. Element type names
- and attribute names that belong to a namespace will be expanded;
- unprefixed attribute names are never expanded; unprefixed element type
- names are expanded only if there is a default namespace. The expanded
- name is the concatenation of the namespace URI, the namespace separator character,
- and the local part of the name. If the namespace separator is ' ' then
- the namespace URI and the local part will be concatenated without any
- separator. When a namespace is not declared, the name and prefix will be
- passed through without expansion. */
- XML_Parser XMLPARSEAPI
- XML_ParserCreateNS(const XML_Char *encoding, XML_Char namespaceSeparator);
- /* atts is array of name/value pairs, terminated by 0;
- names and values are 0 terminated. */
- typedef void (*XML_StartElementHandler)(void *userData,
- const XML_Char *name,
- const XML_Char **atts);
- typedef void (*XML_EndElementHandler)(void *userData,
- const XML_Char *name);
- /* s is not 0 terminated. */
- typedef void (*XML_CharacterDataHandler)(void *userData,
- const XML_Char *s,
- int len);
- /* target and data are 0 terminated */
- typedef void (*XML_ProcessingInstructionHandler)(void *userData,
- const XML_Char *target,
- const XML_Char *data);
- /* data is 0 terminated */
- typedef void (*XML_CommentHandler)(void *userData, const XML_Char *data);
- typedef void (*XML_StartCdataSectionHandler)(void *userData);
- typedef void (*XML_EndCdataSectionHandler)(void *userData);
- /* This is called for any characters in the XML document for
- which there is no applicable handler. This includes both
- characters that are part of markup which is of a kind that is
- not reported (comments, markup declarations), or characters
- that are part of a construct which could be reported but
- for which no handler has been supplied. The characters are passed
- exactly as they were in the XML document except that
- they will be encoded in UTF-8. Line boundaries are not normalized.
- Note that a byte order mark character is not passed to the default handler.
- There are no guarantees about how characters are divided between calls
- to the default handler: for example, a comment might be split between
- multiple calls. */
- typedef void (*XML_DefaultHandler)(void *userData,
- const XML_Char *s,
- int len);
- /* This is called for the start of the DOCTYPE declaration when the
- name of the DOCTYPE is encountered. */
- typedef void (*XML_StartDoctypeDeclHandler)(void *userData,
- const XML_Char *doctypeName);
- /* This is called for the start of the DOCTYPE declaration when the
- closing > is encountered, but after processing any external subset. */
- typedef void (*XML_EndDoctypeDeclHandler)(void *userData);
- /* This is called for a declaration of an unparsed (NDATA)
- entity. The base argument is whatever was set by XML_SetBase.
- The entityName, systemId and notationName arguments will never be null.
- The other arguments may be. */
- typedef void (*XML_UnparsedEntityDeclHandler)(void *userData,
- const XML_Char *entityName,
- const XML_Char *base,
- const XML_Char *systemId,
- const XML_Char *publicId,
- const XML_Char *notationName);
- /* This is called for a declaration of notation.
- The base argument is whatever was set by XML_SetBase.
- The notationName will never be null. The other arguments can be. */
- typedef void (*XML_NotationDeclHandler)(void *userData,
- const XML_Char *notationName,
- const XML_Char *base,
- const XML_Char *systemId,
- const XML_Char *publicId);
- typedef void (*XML_ExternalParsedEntityDeclHandler)(void *userData,
- const XML_Char *entityName,
- const XML_Char *base,
- const XML_Char *systemId,
- const XML_Char *publicId);
- typedef void (*XML_InternalParsedEntityDeclHandler)(void *userData,
- const XML_Char *entityName,
- const XML_Char *replacementText,
- int replacementTextLength);
- /* When namespace processing is enabled, these are called once for
- each namespace declaration. The call to the start and end element
- handlers occur between the calls to the start and end namespace
- declaration handlers. For an xmlns attribute, prefix will be null.
- For an xmlns="" attribute, uri will be null. */
- typedef void (*XML_StartNamespaceDeclHandler)(void *userData,
- const XML_Char *prefix,
- const XML_Char *uri);
- typedef void (*XML_EndNamespaceDeclHandler)(void *userData,
- const XML_Char *prefix);
- /* This is called if the document is not standalone (it has an
- external subset or a reference to a parameter entity, but does not
- have standalone="yes"). If this handler returns 0, then processing
- will not continue, and the parser will return a
- XML_ERROR_NOT_STANDALONE error. */
- typedef int (*XML_NotStandaloneHandler)(void *userData);
- /* This is called for a reference to an external parsed general entity.
- The referenced entity is not automatically parsed.
- The application can parse it immediately or later using
- XML_ExternalEntityParserCreate.
- The parser argument is the parser parsing the entity containing the reference;
- it can be passed as the parser argument to XML_ExternalEntityParserCreate.
- The systemId argument is the system identifier as specified in the entity declaration;
- it will not be null.
- The base argument is the system identifier that should be used as the base for
- resolving systemId if systemId was relative; this is set by XML_SetBase;
- it may be null.
- The publicId argument is the public identifier as specified in the entity declaration,
- or null if none was specified; the whitespace in the public identifier
- will have been normalized as required by the XML spec.
- The context argument specifies the parsing context in the format
- expected by the context argument to
- XML_ExternalEntityParserCreate; context is valid only until the handler
- returns, so if the referenced entity is to be parsed later, it must be copied.
- The handler should return 0 if processing should not continue because of
- a fatal error in the handling of the external entity.
- In this case the calling parser will return an XML_ERROR_EXTERNAL_ENTITY_HANDLING
- error.
- Note that unlike other handlers the first argument is the parser, not userData. */
- typedef int (*XML_ExternalEntityRefHandler)(XML_Parser parser,
- const XML_Char *context,
- const XML_Char *base,
- const XML_Char *systemId,
- const XML_Char *publicId);
- /* This structure is filled in by the XML_UnknownEncodingHandler
- to provide information to the parser about encodings that are unknown
- to the parser.
- The map[b] member gives information about byte sequences
- whose first byte is b.
- If map[b] is c where c is >= 0, then b by itself encodes the Unicode scalar value c.
- If map[b] is -1, then the byte sequence is malformed.
- If map[b] is -n, where n >= 2, then b is the first byte of an n-byte
- sequence that encodes a single Unicode scalar value.
- The data member will be passed as the first argument to the convert function.
- The convert function is used to convert multibyte sequences;
- s will point to a n-byte sequence where map[(unsigned char)*s] == -n.
- The convert function must return the Unicode scalar value
- represented by this byte sequence or -1 if the byte sequence is malformed.
- The convert function may be null if the encoding is a single-byte encoding,
- that is if map[b] >= -1 for all bytes b.
- When the parser is finished with the encoding, then if release is not null,
- it will call release passing it the data member;
- once release has been called, the convert function will not be called again.
- Expat places certain restrictions on the encodings that are supported
- using this mechanism.
- 1. Every ASCII character that can appear in a well-formed XML document,
- other than the characters
- $@^`{}~
- must be represented by a single byte, and that byte must be the
- same byte that represents that character in ASCII.
- 2. No character may require more than 4 bytes to encode.
- 3. All characters encoded must have Unicode scalar values <= 0xFFFF,
- (ie characters that would be encoded by surrogates in UTF-16
- are not allowed). Note that this restriction doesn't apply to
- the built-in support for UTF-8 and UTF-16.
- 4. No Unicode character may be encoded by more than one distinct sequence
- of bytes. */
- typedef struct {
- int map[256];
- void *data;
- int (*convert)(void *data, const char *s);
- void (*release)(void *data);
- } XML_Encoding;
- /* This is called for an encoding that is unknown to the parser.
- The encodingHandlerData argument is that which was passed as the
- second argument to XML_SetUnknownEncodingHandler.
- The name argument gives the name of the encoding as specified in
- the encoding declaration.
- If the callback can provide information about the encoding,
- it must fill in the XML_Encoding structure, and return 1.
- Otherwise it must return 0.
- If info does not describe a suitable encoding,
- then the parser will return an XML_UNKNOWN_ENCODING error. */
- typedef int (*XML_UnknownEncodingHandler)(void *encodingHandlerData,
- const XML_Char *name,
- XML_Encoding *info);
- void XMLPARSEAPI
- XML_SetElementHandler(XML_Parser parser,
- XML_StartElementHandler start,
- XML_EndElementHandler end);
- void XMLPARSEAPI
- XML_SetCharacterDataHandler(XML_Parser parser,
- XML_CharacterDataHandler handler);
- void XMLPARSEAPI
- XML_SetProcessingInstructionHandler(XML_Parser parser,
- XML_ProcessingInstructionHandler handler);
- void XMLPARSEAPI
- XML_SetCommentHandler(XML_Parser parser,
- XML_CommentHandler handler);
- void XMLPARSEAPI
- XML_SetCdataSectionHandler(XML_Parser parser,
- XML_StartCdataSectionHandler start,
- XML_EndCdataSectionHandler end);
- /* This sets the default handler and also inhibits expansion of internal entities.
- The entity reference will be passed to the default handler. */
- void XMLPARSEAPI
- XML_SetDefaultHandler(XML_Parser parser,
- XML_DefaultHandler handler);
- /* This sets the default handler but does not inhibit expansion of internal entities.
- The entity reference will not be passed to the default handler. */
- void XMLPARSEAPI
- XML_SetDefaultHandlerExpand(XML_Parser parser,
- XML_DefaultHandler handler);
- void XMLPARSEAPI
- XML_SetDoctypeDeclHandler(XML_Parser parser,
- XML_StartDoctypeDeclHandler start,
- XML_EndDoctypeDeclHandler end);
- void XMLPARSEAPI
- XML_SetUnparsedEntityDeclHandler(XML_Parser parser,
- XML_UnparsedEntityDeclHandler handler);
- void XMLPARSEAPI
- XML_SetNotationDeclHandler(XML_Parser parser,
- XML_NotationDeclHandler handler);
- void XMLPARSEAPI
- XML_SetExternalParsedEntityDeclHandler(XML_Parser parser,
- XML_ExternalParsedEntityDeclHandler handler);
- void XMLPARSEAPI
- XML_SetInternalParsedEntityDeclHandler(XML_Parser parser,
- XML_InternalParsedEntityDeclHandler handler);
- void XMLPARSEAPI
- XML_SetNamespaceDeclHandler(XML_Parser parser,
- XML_StartNamespaceDeclHandler start,
- XML_EndNamespaceDeclHandler end);
- void XMLPARSEAPI
- XML_SetNotStandaloneHandler(XML_Parser parser,
- XML_NotStandaloneHandler handler);
- void XMLPARSEAPI
- XML_SetExternalEntityRefHandler(XML_Parser parser,
- XML_ExternalEntityRefHandler handler);
- /* If a non-null value for arg is specified here, then it will be passed
- as the first argument to the external entity ref handler instead
- of the parser object. */
- void XMLPARSEAPI
- XML_SetExternalEntityRefHandlerArg(XML_Parser, void *arg);
- void XMLPARSEAPI
- XML_SetUnknownEncodingHandler(XML_Parser parser,
- XML_UnknownEncodingHandler handler,
- void *encodingHandlerData);
- /* This can be called within a handler for a start element, end element,
- processing instruction or character data. It causes the corresponding
- markup to be passed to the default handler. */
- void XMLPARSEAPI XML_DefaultCurrent(XML_Parser parser);
- /* This value is passed as the userData argument to callbacks. */
- void XMLPARSEAPI
- XML_SetUserData(XML_Parser parser, void *userData);
- /* Returns the last value set by XML_SetUserData or null. */
- #define XML_GetUserData(parser) (*(void **)(parser))
- /* This is equivalent to supplying an encoding argument
- to XML_ParserCreate. It must not be called after XML_Parse
- or XML_ParseBuffer. */
- int XMLPARSEAPI
- XML_SetEncoding(XML_Parser parser, const XML_Char *encoding);
- /* If this function is called, then the parser will be passed
- as the first argument to callbacks instead of userData.
- The userData will still be accessible using XML_GetUserData. */
- void XMLPARSEAPI
- XML_UseParserAsHandlerArg(XML_Parser parser);
- /* Sets the base to be used for resolving relative URIs in system identifiers in
- declarations. Resolving relative identifiers is left to the application:
- this value will be passed through as the base argument to the
- XML_ExternalEntityRefHandler, XML_NotationDeclHandler
- and XML_UnparsedEntityDeclHandler. The base argument will be copied.
- Returns zero if out of memory, non-zero otherwise. */
- int XMLPARSEAPI
- XML_SetBase(XML_Parser parser, const XML_Char *base);
- const XML_Char XMLPARSEAPI *
- XML_GetBase(XML_Parser parser);
- /* Returns the number of the attribute/value pairs passed in last call
- to the XML_StartElementHandler that were specified in the start-tag
- rather than defaulted. Each attribute/value pair counts as 2; thus
- this correspondds to an index into the atts array passed to the
- XML_StartElementHandler. */
- int XMLPARSEAPI XML_GetSpecifiedAttributeCount(XML_Parser parser);
- /* Returns the index of the ID attribute passed in the last call to
- XML_StartElementHandler, or -1 if there is no ID attribute. Each
- attribute/value pair counts as 2; thus this correspondds to an index
- into the atts array passed to the XML_StartElementHandler. */
- int XMLPARSEAPI XML_GetIdAttributeIndex(XML_Parser parser);
- /* Parses some input. Returns 0 if a fatal error is detected.
- The last call to XML_Parse must have isFinal true;
- len may be zero for this call (or any other). */
- int XMLPARSEAPI
- XML_Parse(XML_Parser parser, const char *s, int len, int isFinal);
- void XMLPARSEAPI *
- XML_GetBuffer(XML_Parser parser, int len);
- int XMLPARSEAPI
- XML_ParseBuffer(XML_Parser parser, int len, int isFinal);
- /* Creates an XML_Parser object that can parse an external general entity;
- context is a ' '-terminated string specifying the parse context;
- encoding is a ' '-terminated string giving the name of the externally specified encoding,
- or null if there is no externally specified encoding.
- The context string consists of a sequence of tokens separated by formfeeds (f);
- a token consisting of a name specifies that the general entity of the name
- is open; a token of the form prefix=uri specifies the namespace for a particular
- prefix; a token of the form =uri specifies the default namespace.
- This can be called at any point after the first call to an ExternalEntityRefHandler
- so longer as the parser has not yet been freed.
- The new parser is completely independent and may safely be used in a separate thread.
- The handlers and userData are initialized from the parser argument.
- Returns 0 if out of memory. Otherwise returns a new XML_Parser object. */
- XML_Parser XMLPARSEAPI
- XML_ExternalEntityParserCreate(XML_Parser parser,
- const XML_Char *context,
- const XML_Char *encoding);
- enum XML_ParamEntityParsing {
- XML_PARAM_ENTITY_PARSING_NEVER,
- XML_PARAM_ENTITY_PARSING_UNLESS_STANDALONE,
- XML_PARAM_ENTITY_PARSING_ALWAYS
- };
- /* Controls parsing of parameter entities (including the external DTD
- subset). If parsing of parameter entities is enabled, then references
- to external parameter entities (including the external DTD subset)
- will be passed to the handler set with
- XML_SetExternalEntityRefHandler. The context passed will be 0.
- Unlike external general entities, external parameter entities can only
- be parsed synchronously. If the external parameter entity is to be
- parsed, it must be parsed during the call to the external entity ref
- handler: the complete sequence of XML_ExternalEntityParserCreate,
- XML_Parse/XML_ParseBuffer and XML_ParserFree calls must be made during
- this call. After XML_ExternalEntityParserCreate has been called to
- create the parser for the external parameter entity (context must be 0
- for this call), it is illegal to make any calls on the old parser
- until XML_ParserFree has been called on the newly created parser. If
- the library has been compiled without support for parameter entity
- parsing (ie without XML_DTD being defined), then
- XML_SetParamEntityParsing will return 0 if parsing of parameter
- entities is requested; otherwise it will return non-zero. */
- int XMLPARSEAPI
- XML_SetParamEntityParsing(XML_Parser parser,
- enum XML_ParamEntityParsing parsing);
- enum XML_Error {
- XML_ERROR_NONE,
- XML_ERROR_NO_MEMORY,
- XML_ERROR_SYNTAX,
- XML_ERROR_NO_ELEMENTS,
- /* XML_ERROR_INVALID_TOKEN, */
- XML_ERROR_INVALID_NAME,
- XML_ERROR_INVALID_CHAR_IN_DOC,
- XML_ERROR_TWO_DASHES_NOT_ALLOWED_IN_COMMENT,
- XML_ERROR_INVALID_DECL,
- XML_ERROR_INVALID_PI,
- XML_ERROR_INVALID_PI_TARGET,
- XML_ERROR_INVALID_CDATA,
- XML_ERROR_NO_CLOSING_GT,
- XML_ERROR_INVALID_HEX_CHAR_REF,
- XML_ERROR_INVALID_CHAR_REF,
- XML_ERROR_INVALID_REF,
- XML_ERROR_MISSING_EQUALS,
- XML_ERROR_MISSING_QUOT_APOS,
- XML_ERROR_MISSING_REQ_SPACE,
- XML_ERROR_LT_NOT_ALLOWED,
- XML_ERROR_EXPECTED_GT,
- XML_ERROR_INVALID_GT_AFFT_2_RSQB_IN_CONTENT,
- XML_ERROR_INVALID_COMMENT,
- /*****/
- XML_ERROR_UNCLOSED_TOKEN,
- XML_ERROR_PARTIAL_CHAR,
- XML_ERROR_TAG_MISMATCH,
- XML_ERROR_DUPLICATE_ATTRIBUTE,
- XML_ERROR_JUNK_AFTER_DOC_ELEMENT,
- XML_ERROR_PARAM_ENTITY_REF,
- XML_ERROR_UNDEFINED_ENTITY,
- XML_ERROR_RECURSIVE_ENTITY_REF,
- XML_ERROR_ASYNC_ENTITY,
- XML_ERROR_BAD_CHAR_REF,
- XML_ERROR_BINARY_ENTITY_REF,
- XML_ERROR_ATTRIBUTE_EXTERNAL_ENTITY_REF,
- XML_ERROR_MISPLACED_XML_PI,
- XML_ERROR_UNKNOWN_ENCODING,
- XML_ERROR_INCORRECT_ENCODING,
- XML_ERROR_UNCLOSED_CDATA_SECTION,
- XML_ERROR_EXTERNAL_ENTITY_HANDLING,
- XML_ERROR_NOT_STANDALONE
- };
- /* If XML_Parse or XML_ParseBuffer have returned 0, then XML_GetErrorCode
- returns information about the error. */
- enum XML_Error XMLPARSEAPI XML_GetErrorCode(XML_Parser parser);
- /* These functions return information about the current parse location.
- They may be called when XML_Parse or XML_ParseBuffer return 0;
- in this case the location is the location of the character at which
- the error was detected.
- They may also be called from any other callback called to report
- some parse event; in this the location is the location of the first
- of the sequence of characters that generated the event. */
- int XMLPARSEAPI XML_GetCurrentLineNumber(XML_Parser parser);
- int XMLPARSEAPI XML_GetCurrentColumnNumber(XML_Parser parser);
- long XMLPARSEAPI XML_GetCurrentByteIndex(XML_Parser parser);
- /* Return the number of bytes in the current event.
- Returns 0 if the event is in an internal entity. */
- int XMLPARSEAPI XML_GetCurrentByteCount(XML_Parser parser);
- /* For backwards compatibility with previous versions. */
- #define XML_GetErrorLineNumber XML_GetCurrentLineNumber
- #define XML_GetErrorColumnNumber XML_GetCurrentColumnNumber
- #define XML_GetErrorByteIndex XML_GetCurrentByteIndex
- /* Frees memory used by the parser. */
- void XMLPARSEAPI
- XML_ParserFree(XML_Parser parser);
- /* Returns a string describing the error. */
- const XML_LChar XMLPARSEAPI *XML_ErrorString(int code);
- #ifdef __cplusplus
- }
- #endif
- #endif /* not XmlParse_INCLUDED */