ObjFW  Diff

@class OFXMLParser;
@class OFArray;
@class OFMutableArray;
@class OFDataArray;
@class OFStream;

/**
 * \brief A protocol that needs to be implemented by delegates for OFXMLParser.
 */
#ifndef OF_XML_PARSER_M
@protocol OFXMLParserDelegate <OFObject>
#else
@protocol OFXMLParserDelegate
#endif
#ifdef OF_HAVE_OPTIONAL_PROTOCOLS
@optional
#endif
/**
 * \brief This callback is called when the XML parser found processing
 *	  instructions.
 *
 * \param parser The parser which found processing instructions
 * \param pi The processing instructions
 */
-		 (void)parser: (OFXMLParser*)parser
  foundProcessingInstructions: (OFString*)pi;

/**
 * \brief This callback is called when the XML parser found the start of a new
 *	  tag.
 *
 * \param parser The parser which found a new tag
 * \param name The name of the tag which just started
 * \param prefix The prefix of the tag which just started or nil
 * \param ns The namespace of the tag which just started or nil
 * \param attributes The attributes included in the tag which just started or
 *		     nil
 */
-    (void)parser: (OFXMLParser*)parser
  didStartElement: (OFString*)name
       withPrefix: (OFString*)prefix
	namespace: (OFString*)ns
       attributes: (OFArray*)attributes;

/**
 * \brief This callback is called when the XML parser found the end of a tag.
 *
 * \param parser The parser which found the end of a tag
 * \param name The name of the tag which just ended
 * \param prefix The prefix of the tag which just ended or nil
 * \param ns The namespace of the tag which just ended or nil
 */
-  (void)parser: (OFXMLParser*)parser
  didEndElement: (OFString*)name
     withPrefix: (OFString*)prefix
      namespace: (OFString*)ns;

/**
 * \brief This callback is called when the XML parser found characters.
 *
 * In case there are comments or CDATA, it is possible that this callback is
 * called multiple times in a row.
 *
 * \param parser The parser which found a string
 * \param characters The characters the XML parser found
 */
-    (void)parser: (OFXMLParser*)parser
  foundCharacters: (OFString*)characters;

/**
 * \brief This callback is called when the XML parser found CDATA.
 *
 * \param parser The parser which found a string
 * \param CDATA The CDATA the XML parser found
 */
- (void)parser: (OFXMLParser*)parser
    foundCDATA: (OFString*)CDATA;

/**
 * \brief This callback is called when the XML parser found a comment.
 *
 * \param parser The parser which found a comment
 * \param comment The comment the XML parser found
 */
- (void)parser: (OFXMLParser*)parser
  foundComment: (OFString*)comment;

/**
 * \brief This callback is called when the XML parser found an entity it
 *	  doesn't know.
 *
 * The callback is supposed to return a substitution for the entity or nil if
 * it is not known to the callback as well, in which case an exception will be
 * risen.
 *
 * \param parser The parser which found an unknown entity
 * \param entity The name of the entity the XML parser didn't know
 * \return A substitution for the entity or nil
 */
-	(OFString*)parser: (OFXMLParser*)parser
  foundUnknownEntityNamed: (OFString*)entity;
@end

/**
 * \brief An event-based XML parser.
 *
 * OFXMLParser is an event-based XML parser which calls the delegate's callbacks
 * as soon asit finds something, thus suitable for streams as well.
 */
@interface OFXMLParser: OFObject <OFStringXMLUnescapingDelegate>
{
	id <OFXMLParserDelegate> delegate;

	of_string_encoding_t encoding;
}

#ifdef OF_HAVE_PROPERTIES
@property (assign) id <OFXMLParserDelegate> delegate;
#endif

/**
 * \brief Creates a new XML parser.
 *
 * \return A new, autoreleased OFXMLParser
 */
+ (instancetype)parser;

/**
 * \brief Returns the delegate that is used by the XML parser.
 *
 * \return The delegate that is used by the XML parser
 */
- (id <OFXMLParserDelegate>)delegate;

/**
 * \brief Sets the delegate the OFXMLParser should use.
 *
 * \param delegate The delegate to use
 */
- (void)setDelegate: (id <OFXMLParserDelegate>)delegate;

/**
 * \brief Parses the specified buffer with the specified size.
 *
 * \param buffer The buffer to parse
 * \param length The length of the buffer
 */
- (void)parseBuffer: (const char*)buffer
	     length: (size_t)length;

/**
 * \brief Parses the specified string.
 *
 * \param string The string to parse
 */
- (void)parseString: (OFString*)string;

/**
 * \brief Parses the specified stream.
 *
 * \param stream The stream to parse
 */
- (void)parseStream: (OFStream*)stream;

/**
 * \brief Parses the specified file.
 *
 * \param path The path to the file to parse
*/
- (void)parseFile: (OFString*)path;

/**
 * \brief Returns the current line number.
 *
 * \return The current line number
 */
- (size_t)lineNumber;

/**
 * \brief Returns whether the XML parser has finished parsing.
 *
 * \return Whether the XML parser has finished parsing
 */
- (BOOL)finishedParsing;
@end

@interface OFObject (OFXMLParserDelegate) <OFXMLParserDelegate>
@end