xmlparse.h

《unix/Linux下的Curses库开发指南》综合示例程序

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_SetUnparsedEntityDeclHandler(XML_Parser parser,
				 XML_UnparsedEntityDeclHandler handler);

void XMLPARSEAPI
XML_SetNotationDeclHandler(XML_Parser parser,
			   XML_NotationDeclHandler 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_CreateParser. 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 attributes passed in last call to the
XML_StartElementHandler that were specified in the start-tag rather
than defaulted. */

int XMLPARSEAPI XML_GetSpecifiedAttributeCount(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 '\0'-terminated string specifying the parse context;
encoding is a '\0'-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_Error {
  XML_ERROR_NONE,
  XML_ERROR_NO_MEMORY,
  XML_ERROR_SYNTAX,
  XML_ERROR_NO_ELEMENTS,
  XML_ERROR_INVALID_TOKEN,
  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 */