| /* |
| The contents of this file are subject to the Mozilla Public License |
| Version 1.1 (the "License"); you may not use this file except in |
| compliance with the License. You may obtain a copy of the License at |
| http://www.mozilla.org/MPL/ |
| |
| Software distributed under the License is distributed on an "AS IS" |
| basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the |
| License for the specific language governing rights and limitations |
| under the License. |
| |
| The Original Code is expat. |
| |
| The Initial Developer of the Original Code is James Clark. |
| Portions created by James Clark are Copyright (C) 1998, 1999 |
| James Clark. All Rights Reserved. |
| |
| Contributor(s): |
| |
| Alternatively, the contents of this file may be used under the terms |
| of the GNU General Public License (the "GPL"), in which case the |
| provisions of the GPL are applicable instead of those above. If you |
| wish to allow use of your version of this file only under the terms of |
| the GPL and not to allow others to use your version of this file under |
| the MPL, indicate your decision by deleting the provisions above and |
| replace them with the notice and other provisions required by the |
| GPL. If you do not delete the provisions above, a recipient may use |
| your version of this file under either the MPL or the GPL. |
| */ |
| |
| #ifndef XmlParse_INCLUDED |
| #define XmlParse_INCLUDED 1 |
| |
| #ifndef XMLPARSEAPI |
| #define XMLPARSEAPI /* as nothing */ |
| #endif |
| |
| #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 */ |
| |
| class XML_ElementHandler { |
| public: |
| /* atts is array of name/value pairs, terminated by 0; names and |
| values are 0 terminated. */ |
| virtual void startElement(const XML_Char *name, const XML_Char **atts) = 0; |
| virtual void endElement(const XML_Char *name) = 0; |
| }; |
| |
| class XML_CharacterDataHandler { |
| public: |
| /* s is not 0 terminated. */ |
| virtual void characterData(const XML_Char *s, int len) = 0; |
| }; |
| |
| class XML_ProcessingInstructionHandler { |
| public: |
| /* target and data are 0 terminated */ |
| virtual void processingInstruction(const XML_Char *target, const XML_Char *data) = 0; |
| }; |
| |
| /* data is 0 terminated */ |
| class XML_CommentHandler { |
| public: |
| virtual void comment(const XML_Char *data) = 0; |
| }; |
| |
| class XML_CdataSectionHandler { |
| public: |
| virtual void startCdataSection() = 0; |
| virtual void endCdataSection() = 0; |
| }; |
| |
| class XML_DefaultHandler { |
| public: |
| /* 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. */ |
| virtual void doDefault(const XML_Char *s, int len) = 0; |
| }; |
| |
| class XML_DoctypeDeclHandler { |
| public: |
| /* This is called for the start of the DOCTYPE declaration when the |
| name of the DOCTYPE is encountered. */ |
| virtual void startDoctypeDecl(const XML_Char *doctypeName) = 0; |
| /* This is called for the start of the DOCTYPE declaration when the |
| closing > is encountered, but after processing any external subset. */ |
| virtual void endDoctypeDecl() = 0; |
| }; |
| |
| class XML_UnparsedEntityDeclHandler { |
| public: |
| /* 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. */ |
| virtual void unparsedEntityDecl(const XML_Char *entityName, |
| const XML_Char *base, |
| const XML_Char *systemId, |
| const XML_Char *publicId, |
| const XML_Char *notationName) = 0; |
| }; |
| |
| class XML_NotationDeclHandler { |
| public: |
| /* 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. */ |
| virtual void notationDecl(const XML_Char *notationName, |
| const XML_Char *base, |
| const XML_Char *systemId, |
| const XML_Char *publicId) = 0; |
| }; |
| |
| class XML_NamespaceDeclHandler { |
| public: |
| /* 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. */ |
| |
| virtual void startNamespaceDecl(const XML_Char *prefix, |
| const XML_Char *uri) = 0; |
| |
| virtual void endNamespaceDecl(const XML_Char *prefix) = 0; |
| }; |
| |
| class XML_NotStandaloneHandler { |
| public: |
| /* 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 |
| ERROR_NOT_STANDALONE error. */ |
| virtual int notStandalone() = 0; |
| }; |
| |
| class XML_Parser; |
| |
| class XML_ExternalEntityRefHandler { |
| public: |
| /* 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 |
| externalEntityParserCreate. The parser argument is the parser |
| parsing the entity containing the reference; it can be passed as |
| the parser argument to 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 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 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 ERROR_EXTERNAL_ENTITY_HANDLING error. Note that |
| unlike other handlers the first argument is the parser, not |
| userData. */ |
| |
| virtual int externalEntityRef(XML_Parser *parser, |
| const XML_Char *context, |
| const XML_Char *base, |
| const XML_Char *systemId, |
| const XML_Char *publicId) = 0; |
| }; |
| |
| /* This object is returned 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. */ |
| |
| class XMLPARSEAPI XML_Encoding { |
| public: |
| int map[256]; |
| virtual int convert(const char *s); |
| virtual void release(); |
| }; |
| |
| class XML_UnknownEncodingHandler { |
| public: |
| /* 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. */ |
| virtual XML_Encoding *unknownEncoding(const XML_Char *name) = 0; |
| }; |
| |
| class XMLPARSEAPI XML_Parser { |
| public: |
| /* Constructs a new parser; encoding is the encoding specified by |
| the external protocol or null if there is none specified. */ |
| static XML_Parser *parserCreate(const XML_Char *encoding = 0); |
| |
| /* 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 '\0' 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. */ |
| |
| static XML_Parser *parserCreateNS(const XML_Char *encoding, |
| XML_Char namespaceSeparator); |
| |
| virtual void release() = 0; |
| virtual void setElementHandler(XML_ElementHandler *handler) = 0; |
| virtual void setCharacterDataHandler(XML_CharacterDataHandler *handler) = 0; |
| virtual void setProcessingInstructionHandler(XML_ProcessingInstructionHandler *handler) = 0; |
| virtual void setCommentHandler(XML_CommentHandler *handler) = 0; |
| virtual void setCdataSectionHandler(XML_CdataSectionHandler *handler) = 0; |
| |
| /* This sets the default handler and also inhibits expansion of |
| internal entities. The entity reference will be passed to the |
| default handler. */ |
| |
| virtual void setDefaultHandler(XML_DefaultHandler *handler) = 0; |
| |
| /* This sets the default handler but does not inhibit expansion of |
| internal entities. The entity reference will not be passed to |
| the default handler. */ |
| |
| virtual void setDefaultHandlerExpand(XML_DefaultHandler *handler) = 0; |
| |
| virtual void setDoctypeDeclHandler(XML_DoctypeDeclHandler *handler) = 0; |
| virtual void setUnparsedEntityDeclHandler(XML_UnparsedEntityDeclHandler *handler) = 0; |
| virtual void setNotationDeclHandler(XML_NotationDeclHandler *handler) = 0; |
| virtual void setNamespaceDeclHandler(XML_NamespaceDeclHandler *handler) = 0; |
| virtual void setNotStandaloneHandler(XML_NotStandaloneHandler *handler) = 0; |
| virtual void setExternalEntityRefHandler(XML_ExternalEntityRefHandler *handler) = 0; |
| virtual void setUnknownEncodingHandler(XML_UnknownEncodingHandler *handler) = 0; |
| |
| /* 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. */ |
| virtual void defaultCurrent() = 0; |
| |
| /* This is equivalent to supplying an encoding argument |
| to XML_ParserCreate. It must not be called after XML_Parse |
| or XML_ParseBuffer. */ |
| virtual int setEncoding(const XML_Char *encoding) = 0; |
| |
| /* 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. */ |
| |
| virtual int setBase(const XML_Char *base) = 0; |
| |
| virtual const XML_Char *getBase() = 0; |
| |
| /* Returns the number of the attributes passed in last call to the |
| XML_StartElementHandler that were specified in the start-tag rather |
| than defaulted. */ |
| virtual int getSpecifiedAttributeCount() = 0; |
| |
| /* 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). */ |
| virtual int parse(const char *s, int len, int isFinal) = 0; |
| |
| virtual char *getBuffer(int len) = 0; |
| |
| virtual int parseBuffer(int len, int isFinal) = 0; |
| |
| /* 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. */ |
| |
| virtual XML_Parser *externalEntityParserCreate(const XML_Char *context, |
| const XML_Char *encoding) = 0; |
| |
| enum ParamEntityParsing { |
| PARAM_ENTITY_PARSING_NEVER, |
| PARAM_ENTITY_PARSING_UNLESS_STANDALONE, |
| 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. */ |
| |
| virtual int setParamEntityParsing(ParamEntityParsing parsing) = 0; |
| |
| enum Error { |
| ERROR_NONE, |
| ERROR_NO_MEMORY, |
| ERROR_SYNTAX, |
| ERROR_NO_ELEMENTS, |
| ERROR_INVALID_TOKEN, |
| ERROR_UNCLOSED_TOKEN, |
| ERROR_PARTIAL_CHAR, |
| ERROR_TAG_MISMATCH, |
| ERROR_DUPLICATE_ATTRIBUTE, |
| ERROR_JUNK_AFTER_DOC_ELEMENT, |
| ERROR_PARAM_ENTITY_REF, |
| ERROR_UNDEFINED_ENTITY, |
| ERROR_RECURSIVE_ENTITY_REF, |
| ERROR_ASYNC_ENTITY, |
| ERROR_BAD_CHAR_REF, |
| ERROR_BINARY_ENTITY_REF, |
| ERROR_ATTRIBUTE_EXTERNAL_ENTITY_REF, |
| ERROR_MISPLACED_XML_PI, |
| ERROR_UNKNOWN_ENCODING, |
| ERROR_INCORRECT_ENCODING, |
| ERROR_UNCLOSED_CDATA_SECTION, |
| ERROR_EXTERNAL_ENTITY_HANDLING, |
| ERROR_NOT_STANDALONE |
| }; |
| |
| /* If parse or XML_parseBuffer have returned 0, then XML_GetErrorCode |
| returns information about the error. */ |
| |
| virtual Error getErrorCode() = 0; |
| |
| /* 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. */ |
| |
| virtual int getCurrentLineNumber() = 0; |
| virtual int getCurrentColumnNumber() = 0; |
| virtual long getCurrentByteIndex() = 0; |
| |
| /* Return the number of bytes in the current event. |
| Returns 0 if the event is in an internal entity. */ |
| virtual int getCurrentByteCount() = 0; |
| |
| /* Returns a string describing the error. */ |
| static const XML_LChar *errorString(int code); |
| protected: |
| ~XML_Parser() { } |
| }; |
| |
| #endif /* not XmlParse_INCLUDED */ |