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libraptor(3)							  libraptor(3)

NAME
       libraptor - Raptor RDF parser and serializer library

SYNOPSIS
       #include <raptor.h>

       raptor_init();
       raptor_parser *p=raptor_new_parser("rdfxml");
       raptor_set_statement_handler(p,NULL,print_triples);
       raptor_uri *file_uri=raptor_new_uri("http://example.org/");
       raptor_parse_file(p,file_uri,base_uri);
       raptor_parse_uri(p,uri,NULL);
       raptor_free_parser(p);
       raptor_free_uri(file_uri);
       raptor_finish();

       cc file.c -lraptor

DESCRIPTION
       The  Raptor library provides a high-level interface to a set of parsers
       and serializers that  generate  Resource	 Description  Framework	 (RDF)
       triples by parsing syntaxes or serialize the triples into syntaxes.

       The  supported  parsing	syntaxes  include  RDF/XML, N-Triples, Turtle,
       TRiG, RSS tag soup (including all RSS and Atoms), GRDDL, RDFa  and  the
       serializing  syntaxes include RDF/XML (3 varieties), N-Triples, Turtle,
       RSS 1.0, Atom 1.0, GraphViz DOT and RDF/JSON.  The RDF/XML  parser  can
       use  either  expat  or  libxml  XML parsers for providing the SAX event
       stream.	The library functions are arranged in an object-oriented style
       with  constructors,  destructors	 and method calls.  The statements and
       error messages are delivered via callback functions.

       Raptor contains a URI-reference parsing and resolving  (not  retrieval)
       class  (raptor_uri)  sufficient	for dealing with URI-references inside
       RDF.  This functionality is modular and can be  transparently  replaced
       with another existing and compatible URI implementation.

       It also provides a URI-retrieval class (raptor_www) for wrapping exist‐
       ing library such as libcurl, libxml2 or BSD libfetch that provides full
       or  partial  retrieval  of data from URIs and an I/O stream abstraction
       (raptor_iostream) for supportin serializing to a variety of outputs.

       Raptor uses Unicode strings for RDF literals  and  URIs	and  preserves
       them  throughout the library.  It uses the UTF-8 encoding of Unicode at
       the API for passing in or returning Unicode strings.   It  is  intended
       that  the  preservation of Unicode for URIs will support International‐
       ized Resource Identifiers (IRIs) which are still under development  and
       standardisation.

LIBRARY INITIALISATION AND CLEANUP
       raptor_init()

       raptor_finish()
	      Initialise and cleanup the library.  These must be called before
	      any raptor class such as raptor_parser, raptor_uri is created or
	      used.   Note:  as	 of  1.4.19 these are wrappers around a static
	      instance of the new raptor_world class.  In Raptor 2.0 this ini‐
	      tialisation and cleanup method will be removed.

       void   raptor_set_libxslt_security_preferences(void   *security_prefer‐
       ences)
	      Set libxslt security preferences object.

       void raptor_set_libxml_flags(int flags)
	      Set     libxml	 flags	   from	    the	    choices:	  RAP‐
	      TOR_LIBXML_FLAGS_GENERIC_ERROR_SAVE:   save/restore  the	libxml
	      generic	 error	  handler    when     parsing	  and	  RAP‐
	      TOR_LIBXML_FLAGS_STRUCTURED_ERROR_SAVE:  save/restore the libxml
	      structured error handler when parsing.

PARSER CLASS
       This class provides the functionality  of  turning  syntaxes  into  RDF
       triples - RDF parsing.

PARSER CONSTRUCTORS
       raptor_parser* raptor_new_parser(name)
	      Create  a new raptor parser object for the parser with name name
	      currently either "rdfxml", "turtle" or  "rss-tag-soup"  for  the
	      RSS Tag Soup parser.

       raptor_parser*	raptor_new_parser_for_content(raptor_uri  *uri,	 const
       char  *mime_type,  const	 unsigned  char	 *buffer,  size_t  len,	 const
       unsigned char *identifier)
	      Create a new raptor parser object for a syntax identified by URI
	      uri, MIME type mime_type, some initial content  buffer  of  size
	      len  or  content	with  identifier  identifier.	See  the  rap‐
	      tor_guess_parser_name description for further details.

PARSER DESTRUCTOR
       void raptor_free_parser(raptor_parser *parser)
	      Destroy a Raptor parser object.

PARSER MESSAGE CALLBACK METHODS
       Several methods can be registered for the parser that  return  a	 vari‐
       able-argument  message  in the style of printf(3).  These also return a
       raptor_locator that can contain URI, file, line, column and byte counts
       of where the message is about. This structure can be used with the rap‐
       tor_format_locator, raptor_print_locator functions below or the	struc‐
       tures fields directly, which are defined in raptor.h

       void    raptor_set_fatal_error_handler(raptor_parser*	parser,	  void
       *user_data, raptor_message_handler handler)
	      Set the parser fatal error handler callback.

       void raptor_set_error_handler(raptor_parser* parser,  void  *user_data,
       raptor_message_handler handler)
	      Set the parser non-fatal error handler callback.

       void raptor_set_warning_handler(raptor_parser* parser, void *user_data,
       raptor_message_handler handler)
	      Set the parser warning message handler callback.

       raptor_set_namespace_handler(raptor_parser*  parser,  void*  user_data,
       raptor_namespace_handler handler)
	      Set the namespace declaration handler callback.

PARSER STATEMENT CALLBACK METHOD
       The parser allows the registration of a callback function to return the
       statements to the application.

       void    raptor_set_statement_handler(raptor_parser*    parser,	  void
       *user_data, raptor_statement_handler handler)
	      Set  the	statement  callback function for the parser.  The rap‐
	      tor_statement structure is  defined  in  raptor.h	 and  includes
	      fields  for  the	subject,  predicate,  object of the statements
	      along with their types and for literals, language and datatype.

PARSER PARSING METHODS
       These methods perform the entire parsing	 in  one  method.   Statements
       warnings,  errors  and  fatal  errors  are delivered via the registered
       statement, error etc. handler functions.

       In both of these methods, the base URI  is  required  for  the  RDF/XML
       parser  (name  "rdfxml")	 and  Turtle  parser  (name "turtle").	The N-
       Triples parser (name "ntriples") or RSS Tag Soup parser (name "rss-tag-
       soup") do not use this.

       int  raptor_parse_file(raptor_parser*  parser,	raptor_uri  *uri, rap‐
       tor_uri *base_uri)
	      Parse the given filename (a URI like file:filename) according to
	      the optional base URI base_uri.  If uri is NULL, read from stan‐
	      dard input and base_uri is then required.

       int raptor_parse_file_stream(raptor_parser* parser, FILE* stream, const
       char* filename, raptor_uri *base_uri)
	      Parse  the  given	 C  FILE*  stream  according  to  the base URI
	      base_uri (required).  filename is optional and if given, is used
	      for error messages via the raptor_locator structure.

       int  raptor_parse_uri(raptor_parser*  parser,   raptor_uri*  uri,  rap‐
       tor_uri *base_uri)
	      Parse the URI according to the base URI base_uri, or NULL if not
	      needed.	If no base URI is given, the uri is used.  This method
	      depends on the  raptor_www  subsystem  (see  WWW	Class  section
	      below)  and  an existing underlying URI retrieval implementation
	      such as libcurl, libxml or BSD libfetch to retrieve the content.

PARSER CHUNKED PARSING METHODS
       These methods perform the parsing  in  parts  by	 working  on  multiple
       chunks  of  memory  passed  by  the  application.  Statements warnings,
       errors and fatal errors are delivered  via  the	registered  statement,
       error etc. handler functions.

       int raptor_start_parse(raptor_parser* parser, const char *uri)
	      Start  a	parse of chunked content with the base URI uri or NULL
	      if not needed.  The base URI is required for the RDF/XML	parser
	      (name  "rdfxml")	and  Turtle  parser  (name  "turtle").	The N-
	      Triples parser (name "ntriples") or RSS Tag  Soup	 parser	 (name
	      "rss-tag-soup") do not use this.

       int  raptor_parse_chunk(raptor_parser*  parser,	 const	unsigned  char
       *buffer, size_t len, int is_end)
	      Parse the memory at buffer of size len returning statements  via
	      the statement handler callback.  If is_end is non-zero, it indi‐
	      cates the end of the parsing stream.  This method	 can  only  be
	      called after raptor_start_parse().

PARSER UTILITY METHODS
       const char* raptor_get_mime_type(raptor_parser* rdf_parser)
	      Return the MIME type for the parser.

       void raptor_set_parser_strict(raptor_parser *parser, int is_strict)
	      Set  the	parser to strict (is_strict not zero) or lax (default)
	      mode.  The detail of the strictness can be  controlled  by  rap‐
	      tor_set_feature.

       int  raptor_set_feature(raptor_parser  *parser, raptor_feature feature,
       int value)
	      Set a parser feature feature to a particular value.  Returns non
	      0	 on failure or if the feature is unknown.  The current defined
	      parser features are:
		Feature					Values
		RAPTOR_FEATURE_ALLOW_BAGID		Boolean (non 0 true)
		RAPTOR_FEATURE_ALLOW_NON_NS_ATTRIBUTES	Boolean (non 0 true)
		RAPTOR_FEATURE_ALLOW_OTHER_PARSETYPES	Boolean (non 0 true)
		RAPTOR_FEATURE_ALLOW_RDF_TYPE_RDF_LIST	Boolean (non 0 true)
		RAPTOR_FEATURE_ASSUME_IS_RDF		Boolean (non 0 true)
		RAPTOR_FEATURE_CHECK_RDF_ID		Boolean (non 0 true)
		RAPTOR_FEATURE_HTML_LINK		Boolean (non 0 true)
		RAPTOR_FEATURE_HTML_TAG_SOUP		Boolean (non 0 true)
		RAPTOR_FEATURE_MICROFORMATS		Boolean (non 0 true)
		RAPTOR_FEATURE_NON_NFC_FATAL		Boolean (non 0 true)
		RAPTOR_FEATURE_NORMALIZE_LANGUAGE	Boolean (non 0 true)
		RAPTOR_FEATURE_NO_NET			Boolean (non 0 true)
		RAPTOR_FEATURE_RELATIVE_URIS		Boolean (non 0 true)
		RAPTOR_FEATURE_SCANNING			Boolean (non 0 true)
		RAPTOR_FEATURE_WARN_OTHER_PARSETYPES	Boolean (non 0 true)
		RAPTOR_FEATURE_WWW_TIMEOUT		Integer
		RAPTOR_FEATURE_WWW_HTTP_CACHE_CONTROL	String
		RAPTOR_FEATURE_WWW_HTTP_USER_AGENT	String

       If the allow_bagid feature is true  (default  true)  then  the  RDF/XML
       parser  will  support the rdf:bagID attribute that was removed from the
       RDF/XML language when it was revised.  This support may be  removed  in
       future.

       If the allow_non_ns_attributes feature is true (default true), then the
       RDF/XML parser will allow non-XML namespaced attributes to be  accepted
       as well as rdf: namespaced ones.	 For example, 'about' and 'ID' will be
       interpreted as if they were rdf:about and rdf:ID respectively.

       If the allow_other_parsetypes feature is true (default true)  then  the
       RDF/XML	parser	will  allow  unknown parsetypes to be present and will
       pass them on to the user.  Unimplemented at present.

       If the allow_rdf_type_rdf_list feature is true (default false) then the
       RDF/XML parser will generate the idList rdf:type rdf:List triple in the
       handling of rdf:parseType="Collection".	This triple was removed during
       the revising of RDF/XML after collections were initially added.

       If  the assume_is_rdf feature is true (default false), then the RDF/XML
       parser will assume the content is RDF/XML,  not	require	 that  rdf:RDF
       root element, and immediately interpret the content as RDF/XML.

       If  the	check_rdf_id feature is true (default true) then rdf:ID values
       will be checked for duplicates and cause an error if found.

       if the  html_link  feature  is  true  (default  true),  look  for  head
       <link> to type rdf/xml for GRDDL parser

       If  the	html_tag_soup  feature	is true (default true), use a lax HTML
       parser if an XML parser fails when read HTML for GRDDL parser.

       If the microformats feature is true (default true), look for  microfor‐
       mats for GRDDL parser.

       If  the non_nfc_fatal feature is true (default false) then illegal Uni‐
       code Normal Form C in literals will give a fatal	 error,	 otherwise  it
       gives a warning.

       If  the normalize_language feature is true (default true) then XML lan‐
       guage values such as from xml:lang will be normalized to lowercase.

       If the no_net feature is true (default false) then network requests are
       denied.

       If  the	scanning  feature  is  true  (default false), then the RDF/XML
       parser will look for embedded rdf:RDF elements inside the XML  content,
       and not require that the XML start with an rdf:RDF root element.

       If  the www_timeout feature is set to an integer larger than 0, it sets
       the timeout in seconds for internal WWW	URI  requests  for  the	 GRDDL
       parser.

       If the www_http_cache_control feature is set to a string value (default
       none), it is sent as the value of the  HTTP  Cache-Control:  header  in
       requests.

       If the www_http_user_agent feature is set to a string value, it is sent
       as the value of the HTTP User-Agent: header in requests.

       raptor_parser_set_feature_string(raptor_parser *parser,	raptor_feature
       feature, const unsigned char *value)
	      Set  a  parser  feature  feature	to  a particular string value.
	      Returns non 0 on failure or if the feature is unknown.  The cur‐
	      rent defined parser features are given in raptor_set_feature and
	      at present only take integer values. If an integer value feature
	      is  set  with  this function, value is interpreted as an integer
	      and then that value is used.

       int raptor_get_feature(raptor_parser* parser, raptor_feature feature)
	      Get parser feature integer values.  The allowed  feature	values
	      and types are given under raptor_features_enumerate.

       const   unsigned	 char*	raptor_parser_get_feature_string(raptor_parser
       *parser, raptor_feature feature)
	      Get parser feature string values. The allowed feature values and
	      types are given under raptor_features_enumerate.

       unsigned int raptor_get_feature_count(void)
	      Get  the	count  of  features  defined.  Prefered to the compile
	      time-only symbol RAPTOR_FEATURE_LAST which returns  the  maximum
	      value, not the count.  Added raptor_get_need_base_uri

       int raptor_feature_value_type(const raptor_feature feature)
	      Get a raptor feature value tyype - integer or string.

       raptor_locator* raptor_get_locator(raptor_parser* rdf_parser)
	      Return  the  current raptor_locator object for the parser.  This
	      is a public structure defined  in	 raptor.h  that	 can  be  used
	      directly, or formatted via raptor_print_locator.

       void raptor_get_name(raptor_parser *parser)
	      Return the string short name for the parser.

       void raptor_get_label(raptor_parser *parser)
	      Return a string label for the parser.

       void	      raptor_set_default_generate_id_parameters(raptor_parser*
       rdf_parser, char *prefix, int base)
	      Control the default method for generation of IDs for blank nodes
	      and  bags.  The method uses a short string prefix and an integer
	      base to generate the identifier which is not guaranteed to be  a
	      strict  concatenation.   If prefix is NULL, the default is used.
	      If base is less than 1, it is initialised to 1.

       void   raptor_set_generate_id_handler(raptor_parser*    parser,	  void
       *user_data, raptor_generate_id_handler handler)
	      Allow full customisation of the generated IDs by setting a call‐
	      back handler and associated user_data that is called whenever  a
	      blank  node  or bag identifier is required.  The memory returned
	      is deallocated inside raptor.  Some systems require this	to  be
	      allocated	 inside	 the  same  library,  in  which	 case the rap‐
	      tor_alloc_memory function may be useful.

       void    raptor_parser_set_uri_filter(raptor_parser*    parser,	  rap‐
       tor_uri_filter_func filter, void* user_data)
	      Set  the	URI  filter  function filter for URIs retrieved during
	      parsing by the the raptor_parser.

       int raptor_get_need_base_uri(raptor_parser* rdf_parser)
	      Get a boolean whether this parser needs  a  base	URI  to	 start
	      parsing.

       unsigned	  char*	 raptor_parser_generate_id(raptor_parser*  rdf_parser,
       raptor_genid_type type)
	      Generate	an  ID	for  a	parser	of  type  type,	 either	  RAP‐
	      TOR_GENID_TYPE_BNODEID  or  RAPTOR_GENID_TYPE_BAGID.   This uses
	      any configuration set by raptor_set_generate_id_handler.

       void raptor_set_graph_handler(raptor_parser* parser,  void*  user_data,
       raptor_graph_handler handler)
	      Set the graph handler callback.

       raptor_world* raptor_parser_get_world(raptor_parser* rdf_parser)
	      Get the world object for the given rdf_parser.

PARSER UTILITY FUNCTIONS
       int  raptor_parsers_enumerate(const  unsigned  int  counter, const char
       **name, const char **label)
	      Return the parser name/label for a parser with a	given  integer
	      counter,	returning  non-zero  if	 no such parser at that offset
	      exists.  The counter should start from 0 and be incremented by 1
	      until the function returns non-zero.

       int  raptor_syntaxes_enumerate(const  unsigned  int counter, const char
       **name, const char **label, const char **mime_type, const unsigned char
       **uri-string)
	      Return  the  name, label, mime type or URI string (all optional)
	      for a parser syntax with a given integer counter, returning non-
	      zero  if	no  such  syntax  parser  at  that offset exists.  The
	      counter should start from 0 and be incremented by	 1  until  the
	      function returns non-zero.

       int  raptor_features_enumerate(const raptor_feature feature, const char
       **name, raptor_uri **uri, const char **label)
	      Return the name, URI, string label (all optional) for  a	parser
	      feature, returning non-zero if no such feature exists.

       Raptor features have URIs that are constructed from the URI http://fea‐
       ture.librdf.org/raptor- and the name so for example feature  scanForRDF
       has URI http://feature.librdf.org/raptor-scanForRDF

       int raptor_syntax_name_check(const char *name)
	      Check name is a known syntax name.

       const   char*   raptor_guess_parser_name(raptor_uri  *uri,  const  char
       *mime_type, const unsigned char *buffer,	 size_t	 len,  const  unsigned
       char *identifier)
	      Guess  a	parser	name  for a syntax identified by URI uri, MIME
	      type mime_type, some initial content buffer of size len or  with
	      content  identifier  identifier.	 All  of  these parameters are
	      optional and only used if not NULL.  The	parser	is  chosen  by
	      scoring the hints that are given.

       raptor_feature raptor_feature_from_uri(raptor_uri *uri)
	      Turn  a  URI  uri into a raptor feature identifier, or <0 if the
	      feature  is  unknown.   The  URIs	 are  described	  below	  rap‐
	      tor_set_feature.

STATEMENT UTILITY FUNCTIONS
       int  raptor_statement_compare(const  raptor_statement  *s1,  const rap‐
       tor_statement *s2)
	      Compare two statements and return an ordering between them.

       void raptor_print_statement(const  raptor_statement*  const  statement,
       FILE *stream)
	      Print a raptor statement object in a simple format for debugging
	      only.  The format of this output is not guaranteed to remain the
	      same between releases.

       void  raptor_print_statement_as_ntriples(const raptor_statement* state‐
       ment, FILE *stream)
	      Print a raptor statement object in N-Triples format,  using  all
	      the    escapes	as    defined	in   http://www.w3.org/TR/rdf-
	      testcases/#ntriples		    ⟨http://www.w3.org/TR/rdf-
	      testcases/#ntriples⟩

       raptor_statement_part_as_counted_string(const  void *term, raptor_iden‐
       tifier_type type, raptor_uri*  literal_datatype,	 const	unsigned  char
       *literal_language, size_t* len_p)

       char*  raptor_statement_part_as_string(const void *term, raptor_identi‐
       fier_type type, raptor_uri* literal_datatype, const unsigned char *lit‐
       eral_language)
	      Turns  part of raptor statement into N-Triples format, using all
	      the   escapes   as    defined    in    http://www.w3.org/TR/rdf-
	      testcases/#ntriples		    ⟨http://www.w3.org/TR/rdf-
	      testcases/#ntriples⟩ The part (subject,  predicate,  object)  of
	      the  raptor_statement  is passed in as term, the part type (sub‐
	      ject_type, predicate_type, object_type) is passed	 in  as	 type.
	      When  the	 part  is  a  literal,	the  literal_datatype and lit‐
	      eral_language  fields   are   set,   otherwise   NULL   (usually
	      object_datatype, object_literal_language).

	      If  raptor_statement_part_as_counted_string  is used, the length
	      of the returned string is stored in *len_p if not NULL.

LOCATOR UTILITY FUNCTIONS
       int raptor_format_locator(char *buffer, size_t length,  raptor_locator*
       locator)
	      This method takes a raptor_locator object as passed to an error,
	      warning or other handler callback and formats it into the buffer
	      of  size	length bytes.  If buffer is NULL or length is insuffi‐
	      cient for the size of the formatted locator, returns the	number
	      of additional bytes required in the buffer to write the locator.

	      In particular, if this form is used:
		length=raptor_format_locator(NULL,  0, locator) it will return
	      in length the size of a buffer that can be allocated for locator
	      and a second call will perform the formatting:
		raptor_format_locator(buffer, length, locator)

       void raptor_print_locator(FILE *stream, raptor_locator* locator)
	      This method takes a raptor_locator object as passed to an error,
	      warning or other handler callback, formats and prints it to  the
	      given stdio stream.

       int raptor_locator_line(raptor_locator *locator)
	      Returns  the  line  number  in  a locator structure or <0 if not
	      available.

       int raptor_locator_column(raptor_locator *locator)
	      Returns the column number in a locator structure or  <0  if  not
	      available.

       int raptor_locator_byte(raptor_locator *locator)
	      Returns  the  byte  offset  in  a locator structure or <0 if not
	      available.

       const char * raptor_locator_file(raptor_locator *locator)
	      Returns the filename in a	 locator  structure  or	 NULL  if  not
	      available.  Note the returned pointer is to a shared string that
	      must be copied if needed.

       const char * raptor_locator_uri(raptor_locator *locator)
	      Returns the URI string in a locator structure  or	 NULL  if  not
	      available.   Note this does not return a raptor_uri* pointer and
	      the returned pointer is to a shared string that must  be	copied
	      if needed.

N-TRIPLES UTILITY FUNCTIONS
       void  raptor_print_ntriples_string(FILE*	 stream,  const	 char* string,
       const char delim)
	      This is a standalone  function  that  prints  the	 given	string
	      according	 to  N-Triples	escaping rules, expecting to be termi‐
	      nated by delimiter delim which is usually either ', " or <.   If
	      a null delimiter \0 is given, no extra escaping is performed.

       int raptor_iostream_write_string_ntriples(raptor_iostream *iostr, const
       unsigned char *string, size_t len, const char delim)
	      Write an N-Triples  encoded  version  of	the  given  string  to
	      iostream iostr.  If delim is given, that is the ending delimeter
	      of the encoded string and it will be escaped in  the  output  as
	      appropriate.   Useful  delim  values  are ', " and >.  If a null
	      delimiter \0 is given, no extra escaping is performed.

       int raptor_iostream_write_string_python(raptor_iostream	*iostr,	 const
       unsigned char *string, size_t len, const char delim, int flags)
	      Write  string  encoded to an iostream according to the delimeter
	      delim and encoding flags.	 The  flag  value  selects  formatting
	      according to the appropriate Python-related languages such as N-
	      Triples (0), Turtle (1), Turtle long  quoted  string  (2),  JSON
	      (3).

       void  raptor_iostream_write_statement_ntriples(raptor_iostream*	iostr,
       const raptor_statement *statement)
	      Write an	N-Triples  encoded  version  of	 the  raptor_statement
	      statement to iostream iostr.

       void  raptor_iostream_write_string_turtle(raptor_iostream* iostr, const
       unsigned char* string, size_t len)
	      DEPRECATED in 1.4.17 -  use  raptor_iostream_write_string_python
	      instead.	 Write	an UTF-8 string of length len using the Turtle
	      "longString" triple quoting format to the iostream iostr.

       const char*  raptor_ntriples_term_as_string  (raptor_ntriples_term_type
       term)
	      Deprecated, for internal use.

XML UTILITY FUNCTIONS
       int  raptor_xml_any_escape_string(const	unsigned  char* string, size_t
       len, unsigned char* buffer, size_t length, char quote, int xml_version,
       raptor_simple_message_handler error_handler, void* error_data)

       int  raptor_xml_escape_string(const  unsigned char *string, size_t len,
       unsigned char *buffer, size_t length, char  quote,  raptor_message_han‐
       dler error_handler, void *error_data)
	      Apply  the  XML  escaping	 rules to the string given in (string,
	      len) into the buffer of size length.  If	quote  is  given,  the
	      escaped  content	is  for	 an  XML attribute and the appropriate
	      quote character XML element content (CDATA).   The error_handler
	      method  along with error_data allow error reporting to be given.
	      If buffer is NULL, returns the size of the  buffer  required  to
	      escape.	Otherwise the return value is the number of bytes used
	      or <0 on failure.

	      When an xml_version argument is present and has a value 10  (XML
	      1.0)  or	11  (XML  1.1) then that version is used.  The default
	      with no argument is to generate XML 1.0.

       int	 raptor_iostream_write_xml_any_escaped_string(raptor_iostream*
       iostr,  const  unsigned	char*  string,	size_t	len,  char  quote, int
       xml_version,   raptor_simple_message_handler    error_handler,	 void*
       error_data)

       int   raptor_iostream_write_xml_escaped_string(raptor_iostream*	iostr,
       const unsigned char *string, size_t len, char quote, raptor_simple_mes‐
       sage_handler error_handler, void *error_data)
	      Write  an	 XML-escaped  version  of the string given in (string,
	      len) to iostream iostr.  If quote is given, the escaped  content
	      is  for  an XML attribute and the appropriate quote character is
	      used,  otherwise	it  is	XML  element  content  (CDATA).	   The
	      error_handler method along with error_data allow error reporting
	      to be given.

	      When an xml_version argument is present and has a value 10  (XML
	      1.0)  or	11  (XML  1.1) then that version is used.  The default
	      with no argument is to generate XML 1.0.

       int raptor_xml_name_check(const unsigned char *string,  size_t  length,
       int xml_version)
	      Check  that the given string of length bytes is a legal XML name
	      according to XML 1.0 or XML 1.1.	xml_version is set to 10 or 11
	      respectively.  Returns non-zero if the name is legal.

MEMORY UTILITY FUNCTIONS
       void raptor_free_memory(void *ptr)
	      Free  memory allocated inside raptor.  Some systems require mem‐
	      ory allocated  in	 a  library  to	 be  deallocated  inside  that
	      library.	 This  function	 can be used in that situation to free
	      memory allocated by raptor, such as the result of the _to_ meth‐
	      ods that return allocated memory such as raptor_uri_to_filename,
	      raptor_uri_to_string, raptor_uri_to_relative_counted_uri_string,
	      raptor_uri_to_relative_uri_string	     or	     raptor_new_names‐
	      pace_parts_from_string.

       void* raptor_alloc_memory(size_t size)
	      Allocate memory inside the raptor library.  Some systems require
	      memory  allocated	 in  a	library	 to be deallocated inside that
	      library.	This function can be used in that situation  to	 allo‐
	      cate memory for raptor to free later, such as inside the handler
	      function	declared  with	raptor_set_generate_id_handler	 which
	      returns new memory.

       void* raptor_calloc_memory(size_t nmemb, size_t size)
	      Allocate	zeroed	array  of  items  inside raptor.  Some systems
	      require memory allocated in a library to be  deallocated	inside
	      that  library.   This  function can be used in that situation to
	      clear an array of allocated memory for raptor to use, for	 free‐
	      ing  later,  such	 as  inside the handler function declared with
	      raptor_set_generate_id_handler which returns new memory.

UNICODE UTILITY FUNCTIONS
       int raptor_unicode_char_to_utf8(raptor_unichar c, unsigned  char	 *out‐
       put)
	      Turn  a  Unicode	character  into UTF8 bytes in output of size c
	      bytes which must be of sufficient size.  Returns the  number  of
	      bytes encoded or <0 on failure.

       int  raptor_utf8_to_unicode_char(raptor_unichar *output, const unsigned
       char *input, int length)
	      Decode a sequence UTF8 bytes in input of size length into a Uni‐
	      code  character  in output returning the number of bytes used or
	      <0 on failure.

       int raptor_utf8_check(const unsigned char *string, size_t length)
	      Check that a given string is legal UTF-8 encoding	 and  includes
	      only  legal  Unicode  characters	U+0  to	 U+0x10ffff inclusive.
	      Returns non-0 if the string is good.

       int raptor_unicode_is_xml11_namestartchar(raptor_unichar c)

       int raptor_unicode_is_xml10_namestartchar(raptor_unichar c)

       int raptor_unicode_is_xml11_namechar(raptor_unichar c)

       int raptor_unicode_is_xml10_namechar(raptor-unichar c)
	      Check that given Unicode characters are allowed as  XML  1.0  or
	      XML  1.0	names  -  either  as  the starting character (*_names‐
	      tartchar) or continuing character (*_namechar).	Returns	 non-0
	      if the character is allowed.

ERROR UTILITY FUNCTIONS
       void raptor_error_handlers_init(raptor_error_handlers* error_handlers)
	      Initialise  an error_handlers structure after the log level han‐
	      dlers and user data pointers have been set.

MISCELLANEOUS UTILITY FUNCTIONS
       char* raptor_vsnprintf(const char *message, va_list arguments)
	      Compatibility wrapper around vsnprintf.

STATIC VARIABLES
       There are several read-only static variables in the raptor library:

       const char * const raptor_short_copyright_string
	      Short copyright string, suitable for one line.

       const char * const raptor_copyright_string
	      Full copyright over several lines including URLs.

       const char * const raptor_version_string
	      The version as a string

       const unsigned int raptor_version_major
	      The major version number as an integer.

       const unsigned int raptor_version_minor
	      The minor version number as an integer.

       const unsigned int raptor_version_release
	      The release version number as an integer.

       const unsigned int raptor_version_decimal
	      The version number as a single decimal.

       const char * const raptor_license_string
	      The license string over several lines including URLs.

       const char * const raptor_home_url_string
	      The home page URL as a string.

SERIALIZER CLASS
       This class provides the functionality of turning RDF triples into  syn‐
       taxes - RDF serializing.

SERIALIZER CONSTRUCTOR
       raptor_serializer* raptor_new_serializer(const char *name)
	      Create  a	 new  raptor serializer object for the serializer with
	      name name currently either "rdfxml" or "ntriples".  or "rss-1.0"
	      for the RSS 1.0 serializer.

SERIALIZER DESTRUCTOR
       void raptor_free_serializer(raptor_serializer* rdf_serializer)
	      Destroy a Raptor serializer object.

SERIALIZER SERIALIZING METHODS
       int   raptor_serialize_start(raptor_serializer*	 rdf_serializer,  rap‐
       tor_uri *uri, raptor_iostream *iostream)
	      Start to serialize content using the given iostream to write  to
	      with  optional  base  URI uri. The iostream becomes owned by the
	      serializer object and is destroyed at  the  end  of  serializing
	      when raptor_serialize_end() is called.  Note that	 some syntaxes
	      may refuse to serialize without a base URI, such as RDF/XML.

       int  raptor_serialize_start_to_iostream(raptor_serializer*  rdf_serial‐
       izer, raptor_uri* uri, raptor_iostream* iostream)
	      Start  to serialize content using the given iostream to write to
	      with optional base URI uri.  The iostream does NOT become	 owned
	      by the serializer object and the caller may continue to write to
	      it after serializing is finished.	 Note that some	 syntaxes  may
	      refuse to serialize without a base URI, such as RDF/XML.

       int  raptor_serialize_start_to_filename(raptor_serializer*  rdf_serial‐
       izer, const char *filename)
	      Start to serialize content to the file filename which is	opened
	      for writing. The base URI is calculated from the file name.

       int raptor_serialize_start_to_string(raptor_serializer* rdf_serializer,
       raptor_uri *uri, void **string_p, size_t *length_p)
	      Start to serialize content to a string.  string_p must point  to
	      a	 void*	pointer that will be used at the end of serializing to
	      store the newly allocated string.	 length_p if not NULL, it will
	      be  used to store the length of the new string.  The serializing
	      is done with optional base URI uri  however  some	 syntaxes  may
	      refuse to serialize without a base URI, such as RDF/XML.

       int  raptor_serialize_start_to_file_handle(raptor_serializer* rdf_seri‐
       alizer, raptor_uri *uri, FILE *handle)
	      Start to serialize content to the already open  C	 Standard  I/O
	      FILE* handle with the base URI uri, which is optional and may be
	      NULL.  Note that some syntaxes may refuse to serialize without a
	      base URI, such as RDF/XML.

       int raptor_serialize_statement(raptor_serializer* rdf_serializer, const
       raptor_statement *statement)
	      Serialize a single statement using the serializer.

       int raptor_serialize_end(raptor_serializer* rdf_serializer)
	      End the serializing.  This may close and delete  resources  used
	      in  serializing.	No more calls to raptor_serialize_statement or
	      raptor_serialize_end may be done at this point.

       raptor_iostream*	      raptor_serializer_get_iostream(raptor_serializer
       *serializer)
	      Return a pointer to the raptor_iostream* used by the serializer.

       int raptor_serializer_set_namespace(raptor_serializer* serializer, rap‐
       tor_uri *uri, const char *prefix)
	      Set a suggested namespace URI/prefix mapping for use in  serial‐
	      izing.

SERIALIZER UTILITY METHODS
       void raptor_serializer_set_error_handler(raptor_serializer* serializer,
       void *user_data, raptor_message_handler handler)
	      Set the serializer non-fatal error handler callback.

       void  raptor_serializer_set_warning_handler(raptor_serializer*  serial‐
       izer, void *user_data, raptor_message_handler handler)
	      Set the serializer warning message handler callback.

       raptor_locator*	      raptor_serializer_get_locator(raptor_serializer*
       rdf_serializer)
	      Return the current raptor_locator	 object	 for  the  serializer.
	      This  is a public structure defined in raptor.h that can be used
	      directly, or formatted via raptor_print_locator.

       int raptor_serializer_set_feature(raptor_serializer  *serializer,  rap‐
       tor_feature feature, int value)
	      Set a serializer feature feature to a particular value.  Returns
	      non 0 on failure or if the  feature  is  unknown.	  The  current
	      defined serializer features are:
		Feature					Values
		RAPTOR_FEATURE_RELATIVE_URIS		Boolean (non 0 true)
		RAPTOR_FEATURE_WRITE_BASE_URI		Boolean (non 0 true)
		RAPTOR_FEATURE_START_URI		URI String
		RAPTOR_FEATURE_BNODE_BORDER		String
		RAPTOR_FEATURE_BNODE_FILL		String
		RAPTOR_FEATURE_JSON_CALLBACK		String
		RAPTOR_FEATURE_JSON_EXTRA_DATA		String
		RAPTOR_FEATURE_LITERAL_BORDER		String
		RAPTOR_FEATURE_LITERAL_FILL		String
		RAPTOR_FEATURE_RESOURCE_BORDER		String
		RAPTOR_FEATURE_RESOURCE_FILL		String
		RAPTOR_FEATURE_RSS_TRIPLES		String
		RAPTOR_FEATURE_ATOM_ENTRY_URI		String

       If  the relative_uris feature is true (default false) then when serial‐
       ising, preference is given to generating relative URIs where possible.

       If the write_base_uri feature is true (default  true)  then  the	 atom,
       rdfxml,	rdfxml-abbrev  and  turtle  serializers will write an @base or
       xml:base directive in the output.

       If the start_uri feature is set to a URI it is used by  the  serializer
       to start serializing from.

       If  the	bnode_border feature is set, the DOT serializer uses it as the
       bnode border colour.

       If the bnode_fill feature is set, the DOT serializer  uses  it  as  the
       bnode fill colour.

       If the json_callback feature is set, the JSON serializers use it as the
       name of the callback to wrap the outer JSON object.

       If the json_extra_data feature is set, the JSON serializers use	it  as
       extra data inside the outer JSON object.

       If the literal_border feature is set, the DOT serializer uses it as the
       literal border colour.

       If the literal_fill feature is set, the DOT serializer uses it  as  the
       literal fill colour.

       If  the	resource_border	 feature is set, the DOT serializer uses it as
       the resource border colour.

       If the resource_fill feature is set, the DOT serializer uses it as  the
       resource fill colour.

       If  the	rss_triples  feature  is  set  to the string "rdf-xml" for the
       rss-1.0 serializer or "atom-triples" for the atom serializer, it writes
       extra rdf triples into the serialized output.

       If  the	atom_entry_uri	feature	 is set to a URI string, it is used to
       trigger generation of an atom entry document for the atom serializer.

       int raptor_serializer_get_feature(raptor_serializer*  serializer,  rap‐
       tor_feature feature)
	      Get  serializer  features, the allowed feature values are avail‐
	      able

       raptor_world* raptor_serializer_get_world(raptor_serializer*  rdf_seri‐
       alizer)
	      Get the world object for the given rdf_serializer.

SERIALIZER UTILITY FUNCTIONS
       int raptor_serializers_enumerate(const unsigned int counter, const char
       **name, const char **label, const char **mime_type, const unsigned char
       **uri_string)
	      Return  the  serializer name/label for a serializer with a given
	      integer counter, returning non-zero if no such  parser  at  that
	      offset  exists.	The  counter should start from 0 and be incre‐
	      mented by 1 until the function returns non-zero.

       int raptor_serializer_syntax_name_check(const char *name)
	      Check name is a known serializer syntax name.

URI CLASS
       Raptor has a raptor_uri class must be used for manipulating and passing
       URI references.	The default internal implementation uses char* strings
       for URIs, manipulating them and constructing them.  This URI  implemen‐
       tation  can be replaced by any other that provides the equivalent func‐
       tionality, using the raptor_uri_set_handler function.

URI CONSTRUCTORS
       There a several constructors for raptor_uri to build  them  from	 char*
       strings and existing raptor_uri objects.

       raptor_uri* raptor_new_uri(const unsigned char* uri_string)
	      Create a raptor URI from a string URI-reference uri_string.

       raptor_uri*  raptor_new_uri_from_uri_local_name(raptor_uri*  uri, const
       unsigned char* local_name)
	      Create a raptor URI from a string URI-reference local_name rela‐
	      tive  to an existing URI-reference.  This performs concatenation
	      of the local_name to the uri and not  relative  URI  resolution,
	      which  is	 done by the raptor_new_uri_relative_to_base construc‐
	      tor.

       raptor_uri* raptor_new_uri_relative_to_base(raptor_uri* base_uri, const
       unsigned char* uri_string)
	      Create a raptor URI from a string URI-reference uri_string using
	      relative URI resolution to the base_uri.

       raptor_uri* raptor_new_uri_from_id(raptor_uri* base_uri, const unsigned
       char* id)
	      Create  a raptor URI from a string RDF ID id concatenated to the
	      base_uri base URI.

       raptor_uri* raptor_new_uri_for_rdf_concept(const char* name)
	      Create a raptor URI for the RDF namespace concept name.

       raptor_uri* raptor_new_uri_for_xmlbase(raptor_uri* old_uri))
	      Create a raptor URI suitable for use with xml:base  (throw  away
	      fragment)

URI DESTRUCTOR
       void raptor_free_uri(raptor_uri* uri)
	      Destroy a raptor URI object.

URI METHODS
       int raptor_uri_equals(raptor_uri* uri1, raptor_uri* uri2)
	      Return non-zero if the given URIs are equal.

       raptor_uri* raptor_uri_copy(raptor_uri* uri)
	      Return a copy of the given raptor URI uri.

       unsigned	 char*	raptor_uri_as_counted_string(raptor_uri	 *uri, size_t*
       len_p)

       unsigned char* raptor_uri_as_string(raptor_uri* uri)
	      Return a shared pointer to a string representation of the	 given
	      raptor  URI  uri.	  This	string is shared and must not be freed
	      (otherwise see the  raptor_uri_to_*  methods  below).   If  rap‐
	      tor_uri_as_counted_string	 is  used,  the length of the returned
	      string is stored in *len_p if not NULL.

       unsigned	 char*	raptor_uri_to_counted_string(raptor_uri	 *uri,	size_t
       *len_p)

       unsigned char* raptor_uri_to_string(raptor_uri *uri)
	      Return  a	 to a newly alloced string representation of the given
	      raptor URI uri.  This string must be freed by the	 caller	 using
	      raptor_free_memory.   If	raptor_uri_to_counted_string  is used,
	      the length of the returned string is stored  in  *len_p  if  not
	      NULL.

       unsigned	  char*	  raptor_uri_to_relative_counted_uri_string(raptor_uri
       *base_uri, raptor_uri *reference_uri, size_t *length_p)

       unsigned char* raptor_uri_to_relative_uri_string(raptor_uri  *base_uri,
       raptor_uri *reference_uri)
	      Return  a new relative URI string of a URI reference_uri against
	      a base URI base_uri.  The returned string	 must  be  freed  with
	      raptor_free_memory.  If raptor_uri_to_relative_counted_string is
	      used, the length of the returned string is stored in  *len_p  if
	      not NULL.

       void raptor_uri_print(const raptor_uri* uri, FILE *stream)
	      Print URI uri to the file handle stream.

       int raptor_iostream_write_uri(raptor_iostream* iostr,  raptor_uri* uri)
	      Write the raptor_uri uri to the iostream ostr.

URI UTILITY FUNCTIONS
       void  raptor_uri_resolve_uri_reference  (const unsigned char* base_uri,
       const unsigned  char*  reference_uri,  char  unsigned*  buffer,	size_t
       length)
	      This  is	a  standalone  function that resolves the relative URI
	      reference_uri against the base URI base_uri according to the URI
	      resolution  rules	 in  RFC2396.	The resulting URI is stored in
	      buffer which is of length bytes.	If this is too small, no  work
	      will be done.

       char *raptor_uri_filename_to_uri_string(const unsigned char* filename)
	      This  is a standalone function that turns a local filename (Win‐
	      dows or Unix style as  appropriate  for  platform)  into	a  URI
	      string (file).
	       The  returned  string must be freed by the caller. Some systems
	      require memory allocated in a library to be  deallocated	inside
	      that library in which case raptor_free_memory may be used.

       char	*raptor_uri_uri_string_to_filename(const     unsigned	 char*
       uri_string)

       char    *raptor_uri_uri_string_to_filename(const	    unsigned	 char*
       uri_string, unsigned char **fragment_p)
	      These  are standalone functions that turn a URI string that rep‐
	      resents a local filename (file:) into a filename, with  optional
	      URI  fragment.  If fragment_p is not NULL it points to the loca‐
	      tion to store a newly allocated string containing the  fragment.
	      The  returned strings must be freed by the caller.  Some systems
	      require memory allocated in a library to be  deallocated	inside
	      that library in which case raptor_free_memory may be used.

       int raptor_uri_is_file_uri(const unsigned char* uri_string)
	      DEPRECATED  in  1.4.9.  Returns non-zero if the given URI string
	      represents a filename.  Use raptor_uri_uri_string_is_file_uri in
	      preference.

       int raptor_uri_uri_string_is_file_uri(const unsigned char* uri_string)
	      Returns non-zero if the given URI string represents a filename.

URI CLASS IMPLEMENTATION
       void  raptor_uri_set_handler(const  raptor_uri_handler  *handler,  void
       *context)
	      Change the URI class implementation to the functions provided by
	      the handler URI implementation.  The context user data is passed
	      in to the handler URI implementation calls.

       void raptor_uri_get_handler(raptor_uri_handler **handler,  void	**con‐
       text)
	      Return  the  current raptor URI class implementation handler and
	      context

WWW CLASS
       This is a small wrapper class around existing WWW libraries in order to
       provide	HTTP  GET  or  better  URI  retrieval  for  Raptor.  It is not
       intended to be a general purpose WWW retrieval interface.

WWW CLASS INITIALISATION AND CLEANUP
       void raptor_www_init(void)

       void raptor_www_finish(void)
	      Initialise or terminate  the  raptor_www	infrastructure.	  rap‐
	      tor_www_init  and	 raptor_finish	are  called by raptor_init and
	      raptor_finish respecitively, otherwise must be called once each.

       NOTE   Several of the WWW  library  implementations  require  once-only
	      initialisation  and  termination functions to be called, however
	      raptor cannot determine whether this is already done before  the
	      library  is initialised in raptor_www_init or terminated in rap‐
	      tor_www_finish, so always performs it.  This can be  changed  by
	      raptor_www_no_www_library_init_finish.

       void raptor_www_no_www_library_init_finish(void)
	      If  this	is called before raptor_www_init, it will not call the
	      underlying WWW library global initialise or terminate functions.
	      The application code must perform both operations.

	      For  example  with  curl, after this function is called, neither
	      curl_global_init nor curl_global_cleanup will be	called	during
	      raptor_www_init or raptor_www_finish respectively.

WWW CONSTRUCTORS
       raptor_www *raptor_www_new(void)

       raptor_www *raptor_www_new_with_connection(void* connection)
	      Create a raptor WWW object capable of URI retrieval.  If connec‐
	      tion is given, it must match the connection object of the under‐
	      lying WWW implementation.	 At present, this is only for libcurl,
	      and allows you to re-use an existing curl	 handle,  or  use  one
	      which has been set up with some desired qualities.

WWW DESTRUCTOR
       void raptor_www_free(raptor_www *www)
	      Destroy a raptor WWW object.

WWW METHODS
       void raptor_www_set_user_agent(raptor_www *www, const char *user_agent)
	      Set the HTTP User-Agent header value.

       int   raptor_www_set_http_cache_control(raptor_www*  www,  const	 char*
       cache_control)
	      Set the HTTP Cache-Control header value.

       void raptor_www_set_proxy(raptor_www *www, const char *proxy)
	      Set  the	HTTP  proxy  -	usually	  a   string   of   the	  form
	      http://server:port

       raptor_www_set_write_bytes_handler(raptor_www	     *www,	  rap‐
       tor_www_write_bytes_handler handler, void *user_data)
	      Set the handler to  receive  bytes  written  by  the  raptor_www
	      implementation.

       void    raptor_www_set_content_type_handler(raptor_www	 *www,	  rap‐
       tor_www_content_type_handler handler, void *user_data)
	      Set the handler to receive the HTTP Content-Type value,  when/if
	      discovered during retrieval by the raptor_www implementation.

       void raptor_www_set_http_accept(raptor_www *www, const char *value)
	      Set  the WWW HTTP Accept: header to value.  If value is NULL, an
	      empty header is sent.

       void raptor_www_set_error_handler(raptor_www *www,  raptor_message_han‐
       dler error_handler, void *error_data)
	      Set  the	error  handler routine for the raptor_www class.  This
	      takes the same arguments as  the	raptor_parser  error,  warning
	      handler methods.

       void  raptor_www_set_uri_filter(raptor_www* www, raptor_uri_filter_func
       filter, void* user_data)
	      Set the URI filter function filter for  URIs  retrieved  by  the
	      raptor_www object.

       void* raptor_www_get_connection(raptor_www *www)
	      Return  the underlying WWW library connection object.  For exam‐
	      ple, for libcurl this is the curl_handle.

       void raptor_www_set_connection_timeout(raptor_www* www, int timeout)
	      Set the WWW connection timeout in seconds.

       raptor_uri* raptor_www_get_final_uri(raptor_www* www)
	      Get the final URI from a WWW retrieval, which may include	 redi‐
	      rections.

WWW ACTION METHODS
       int raptor_www_fetch(raptor_www *www, raptor_uri *uri)
	      Retrieve the given URL, returning non zero on failure.

       int  raptor_www_fetch_to_string(raptor_www  *www, raptor_uri *uri, void
       **string_p, size_t *length_p, void *(*malloc_handler)(size_t size))
	      Retrieve the given URL to a string.  string_p must  point	 to  a
	      void*  pointer  that  will  be used to store the newly allocated
	      string.  length_p if not NULL, it will  be  used	to  store  the
	      length of the new string.

       void raptor_www_abort(raptor_www *www, const char *reason)
	      Abort an ongoing raptor WWW operation. Typically used within one
	      of the raptor WWW handlers.

QNAME CLASS
       This is a class for handling XML QNames consisting of the  pair	of  (a
       URI  from  a  namespace,	 a local name) along with an optional value --
       useful for  XML	attributes.   This  is	used  with  the	 raptor_names‐
       pace_stack  and	raptor_namespace  classes  to  handle  a stack of rap‐
       tor_namespace that build on raptor_qname.

QNAME CONSTRUCTORS
       There are two  constructors  for	 raptor_qname  to  build  qnames  with
       optional values on a stack of names.

       raptor_qname*  raptor_new_qname(raptor_namespace_stack  *nstack,	 const
       unsigned char *name, const  unsigned  char  *value,  raptor_simple_mes‐
       sage_handler error_handler, void *error_data)
	      Create  a	 raptor	 QName name (a possibly :-separated name) with
	      name to be resolved against the given  nstack  namespace	stack.
	      An  optional  value  can be given, and if there is an error, the
	      error_handler and error_data will be used to  invoke  the	 call‐
	      back.

       raptor_qname* raptor_new_qname_from_namespace_local_name (raptor_names‐
       pace *ns, const unsigned char *local_name, const unsigned char *value)
	      Create a raptor QName using  the	namespace  name	 of  the  rap‐
	      tor_namespace  ns	 and  the  local  name	local_name, along with
	      optional value value.  Errors are reported using the error  han‐
	      dling and data of the namespace.

       raptor_qname* raptor_qname_copy(raptor_qname *qname)
	      Create  a	 raptor	 QName from an existing one, returning NULL on
	      failure.

QNAME DESTRUCTOR
       void raptor_free_qname(raptor_qname* name)
	      Destroy a raptor qname object.

QNAME METHODS
       int raptor_qname_equal(raptor_qname* name1, raptor_qname *name2)
	      Return non-zero if the given QNames are equal.

       int  raptor_iostream_write_qname(raptor_iostream*  iostr,  raptor_qname
       *qname)
	      Write the raptor_qname qname to the iostream ostr.

       const unsigned char* raptor_qname_get_local_name(raptor_qname* name)
	      Get the local name of the QName.

       const unsigned char* raptor_qname_get_value(raptor_qname* name)
	      Get the value of the QName for an XML attribute QName.

       const unsigned char* raptor_qname_get_counted_value(raptor_qname* name,
       size_t* length_p)
	      Get the value fo the QName along with the length (if length_p is
	      not NULL) for an XML attribute QName.

       unsigned	   char*   raptor_qname_to_counted_name(raptor_qname*	qname,
       size_t* length_p)
	      Get the formatted QName as a newly allocated counted string  (if
	      length_p is not NULL).

QNAME UTILITY FUNCTIONS
       raptor_uri*  raptor_qname_string_to_uri(raptor_namespace_stack *nstack,
       const unsigned char *name, size_t name_len,  raptor_simple_message_han‐
       dler error_handler, void *error_data)
	      Return  the  URI corresponding to the QName according to the RDF
	      method; concatenating the namespace's name (URI) with the	 local
	      name.  Takes the same arguments as raptor_new_qname but does not
	      create a raptor_qname object.

       raptor_namespace* raptor_qname_get_namespace(raptor_qname* name)
	      Return the raptor_namespace used by the QName.   Will  never  be
	      NULL even for the default namespace in which case the URI of the
	      returned namespace object will be NULL.

NAMESPACE CLASS
       An XML namespace class - each entry is on a stack  and  consists	 of  a
       name  (URI)  and	 prefix.   The	prefix or the name but not both may be
       empty.  If the prefix is empty, it defines the default prefix.  If  the
       name is empty, it undefines the given prefix.

NAMESPACE CONSTRUCTORS
       raptor_namespace*  raptor_new_namespace(raptor_namespace_stack *nstack,
       const unsigned char *prefix, const unsigned  char  *ns_uri_string,  int
       depth)

       raptor_namespace*  raptor_new_namespace_from_uri(raptor_namespace_stack
       *nstack, const unsigned char *prefix, raptor_uri* ns_uri, int depth)
	      Create a new raptor_namespace  object  on	 the  given  namespace
	      stack  nstack  with prefix prefix and namespace name either from
	      URI string ns_uri_string or from copying URI ns_uri.

       If prefix is NULL, it defines the URI for the default namespace prefix.
       If  the	namespace name (ns_uri_string or ns_uri) is NULL, it undefines
       the given prefix in the current scope.  Both prefix and URI may be NULL
       to undefine the default namespace.  depth signifies the position of the
       namespace on the stack; 0 is the bottom of the stack and generally  the
       first depth for user namespace declarations.

       Namespaces declared on the same depth (such as on the same XML element,
       typically) can be handily  freed	 with  raptor_namespaces_end_for_depth
       method on the namespace stack class.

NAMESPACE DESTRUCTOR
       void raptor_free_namespace(raptor_namespace *ns)
	      Destroy a raptor namespace object.

NAMESPACE METHODS
       raptor_uri* raptor_namespace_get_uri(const raptor_namespace *ns)
	      Return the namespace name (URI) of the namespace.

       const unsigned char* raptor_namespace_get_prefix(const raptor_namespace
       *ns)
	      Return the prefix of the namespace.

       const  unsigned	char*  raptor_namespace_get_counted_prefix(const  rap‐
       tor_namespace* ns, size_t* length_p)
	      Return  the  prefix  of  the namespace as a string with optional
	      count stored in the variable address length_p if it is not NULL.

       unsigned	 char  *raptor_namespaces_format(const	raptor_namespace  *ns,
       size_t *length_p)
	      Format  the namespace as a string and return it as a new string,
	      returning the length of the resulting string in length_p	if  it
	      is  not NULL.  The string format is suitable for emitting in XML
	      to declare the namespace.

       int   raptor_iostream_write_namespace(raptor_iostream*	iostr,	  rap‐
       tor_namespace *ns)
	      Write  a	formatted  namespace  declaration  like xmlns... to an
	      iostream iostr.

NAMESPACE UTILITY FUNCTIONS
       int raptor_namespace_copy(raptor_namespace_stack *nstack, raptor_names‐
       pace *ns, int new_depth)
	      Copy the namespace from the current stack to the new one, nstack
	      at depth new_depth.

       int   raptor_new_namespace_parts_from_string(unsigned   char   *string,
       unsigned char **prefix, unsigned char **uri_string)
	      Parse  string  with  an  XML-style  namespace  declaration  like
	      xmlns="",	 xmlns="uri",  xmlns:prefix=""	or  xmlns:prefix="uri"
	      into  the	 strings pointed to by prefix string and a uri_string.
	      Empty  prefixes  or  namespace  names  return   NULL   pointers.
	      Returned	strings	 must  be  freed  by  the  caller  using  rap‐
	      tor_free_memory.

NAMESPACE STACK CLASS
       A stack of raptor_namespace objects where the namespaces on top of  the
       stack  have wider scope and override earlier (lower) namespace declara‐
       tions.  Intended to match the XML namespace declaring  semantics	 using
       xmlns attributes.

NAMESPACE STACK CONSTRUCTORS
       raptor_namespace_stack*	      raptor_new_namespaces(raptor_uri_handler
       *uri_handler,	void	*uri_context,	 raptor_simple_message_handler
       error_handler, void *error_data, int defaults)

       int    raptor_namespaces_init(raptor_namespace_stack    *nstack,	  rap‐
       tor_uri_handler *handler, void *context,	 raptor_simple_message_handler
       error_handler, void *error_data, int defaults)
	      Create  or  initialise  a new raptor_namespace_stack object with
	      the given URI and error handlers.	  raptor_namespaces_new	 allo‐
	      cates  new  memory  for  the  namespace  stack and raptor_names‐
	      paces_init initialises an existing declared nstack, which	 could
	      be  statically  allocated.  Note that raptor_uri_get_handler can
	      be useful to return the current raptor URI handler/context.  The
	      defaults	 argument   describes  which  default  namespaces  are
	      declared in the empty stack.  At present, 0 is none, 1 for  just
	      the  XML namespace and 2 is for a typical set of namespaces used
	      for RDF, RDFS, Dublin Core, OWL, ...  that may vary over time.

	      In versions 1.4.16 or newer  this	 returns  an  integer  result,
	      non-0 on failure.

NAMESPACE STACK DESTRUCTORS
       void raptor_free_namespaces(raptor_namespace_stack *nstack)
	      Destroy  a namespace stack object, freeing the nstack (goes with
	      raptor_new_namespaces).

       void raptor_namespaces_clear(raptor_namespace_stack *nstack)
	      Clear a statically allocated namespace stack; does not free  the
	      nstack.  (goes with raptor_namespaces_init).

NAMESPACE STACK METHODS
       void  raptor_namespaces_start_namespace(raptor_namespace_stack *nstack,
       raptor_namespace *nspace)
	      Start the given nspace  on  the  stack,  at  the	depth  already
	      defined.

       int	 raptor_namespaces_start_namespace_full(raptor_namespace_stack
       *nstack, const unsigned char *prefix, const unsigned char *nspace,  int
       depth)
	      Create  a	 new  raptor_namespace and start it on the stack.  See
	      raptor_new_namespace for the meaning of the argumens.

       void  raptor_namespaces_end_for_depth(raptor_namespace_stack   *nstack,
       int depth)
	      End (and free) all namespaces on the stack at the given depth.

       raptor_namespace*     raptor_namespaces_get_default_namespace	 (rap‐
       tor_namespace_stack *nstack)
	      Return the current default  raptor_namespace  of	the  namespace
	      stack or NULL if there is none.

       raptor_namespace* raptor_namespaces_find_namespace_by_uri(raptor_names‐
       pace_stack *nstack, raptor_uri *ns_uri)
	      Find the first namespace on the stack with the given uri	ns_uri
	      or NULL if there is none.

       raptor_namespace *raptor_namespaces_find_namespace_by_uri(raptor_names‐
       pace_stack *nstack, const unsigned char *prefix, int prefix_length)
	      Find the first namespace on the stack with the  given  namespace
	      prefix or NULL if there is none.

       int	   raptor_namespaces_namespace_in_scope(raptor_namespace_stack
       *nstack, const raptor_namespace *nspace)
	      Return non-zero if the raptor_namespace nspace  is  declared  on
	      the stack; i.e. in scope if this is a stack of XML namespaces.

NAMESPACE STACK UTILITY FUNCTIONS
       raptor_qname*  raptor_namespaces_qname_from_uri(raptor_namespace_stack*
       nstack,	raptor_uri* uri, int xml_version)
	      Create a raptor QName from the URI uri if the URI is  squal  one
	      of  the  namespace  URIs on the namespace stack nstack URIs con‐
	      catenated to a legal XML name for the given XML  version.	  URIs
	      are  created  and	 errors are reported using the namespace stack
	      fields.  Fails if it cannot be legally described with any of the
	      namespaces.

SEQUENCE CLASS
       A  class	 for  ordered  sequences of items, adding at either end of the
       sequence.  The method names should be familiar to Perl users.

SEQUENCE CONSTRUCTOR
       raptor_sequence*	     raptor_new_sequence(raptor_sequence_free_handler*
       free_handler, raptor_sequence_print_handler* print_handler)
	      Create  a	 new empty sequence, with optional handler for freeing
	      elements (as used by raptor_free_sequence and printing out  ele‐
	      ments (used by raptor_sequence_print).

SEQUENCE DESTRUCTOR
       void raptor_free_sequence(raptor_sequence* seq)
	      Destoy  a sequence object, freeing any items if the free handler
	      was defined in the constructor.

SEQUENCE METHODS
       int raptor_sequence_size(raptor_sequence* seq)
	      Return the number of items in the sequence.

       int raptor_sequence_set_at(raptor_sequence* seq, int idx, void *data)
	      Set the sequence item at index idx to the value data,  extending
	      it if necessary.

       int raptor_sequence_push(raptor_sequence* seq, void *data)
	      Add item data to the end of the sequence.

       int raptor_sequence_shift(raptor_sequence* seq, void *data)
	      Add item data to the start of the sequence.

       void* raptor_sequence_get_at(raptor_sequence* seq, int idx)
	      Get  the	sequence  item	at  index idx or NULL if no such index
	      exists.

       void* raptor_sequence_pop(raptor_sequence* seq)
	      Remove and return an item from the end of the sequence, or  NULL
	      if is empty.

       void* raptor_sequence_unshift(raptor_sequence* seq)
	      Remove  and  return  an  item from the start of the sequence, or
	      NULL if is empty.

       void  raptor_sequence_sort(raptor_sequence*  seq,   int(*compare)(const
       void *, const void *))
	      Sort  the	 sequence  using the given comparison function compare
	      which is passed to qsort(3) internally.

       int raptor_compare_strings(const void *a, const void *b)
	      Helper function useful with raptor_sequence_sort.

       void   raptor_sequence_set_print_handler(raptor_sequence	  *seq,	  rap‐
       tor_sequence_print_handler *print_handler)
	      Set  the	print handler for the sequence, an alternative to set‐
	      ting it in the constructor.

       void raptor_sequence_print_string(char *data, FILE *fh)
	      Helper print handler function useful for printing out  sequences
	      of strings.

       void raptor_sequence_print_uri(char *data, FILE *fh)
	      Helper  print handler function useful for printing out sequences
	      of raptor_uri* objects.

       void raptor_sequence_print(raptor_sequence* seq, FILE* fh)
	      Print out the sequence in a debug format to the given file  han‐
	      dler fh.	NOTE: The exact format is not guaranteed to remain the
	      same between releases.

       int raptor_sequence_join(raptor_sequence* dest, raptor_sequence *src)
	      Join two sequences moving all items from sequence src to the end
	      of  sequence  dest.   After this operation, sequence src will be
	      empty (zero size) but  will  have	 the  same  item  capacity  as
	      before.

       void* raptor_sequence_delete_at(raptor_sequence* seq, int idx)
	      Remove an item from position idx in the sequence, returning it.

STRINGBUFFER CLASS
       A class for growing strings, small chunks at a time.

STRINGBUFFER CONSTRUCTOR
       raptor_stringbuffer* raptor_new_stringbuffer(void)
	      Create a new stringbuffer.

STRINGBUFFER DESTRUCTOR
       void raptor_free_stringbuffer(raptor_stringbuffer* stringbuffer)
	      Destroy a stringbuffer.

STRINGBUFFER METHODS
       int	raptor_stringbuffer_append_counted_string(raptor_stringbuffer*
       stringbuffer, const unsigned char *string, size_t length, int do_copy)
	      Append a string of length bytes to a  stringbuffer,  copying  it
	      only if do_copy is non-0.

       int    raptor_stringbuffer_append_string(raptor_stringbuffer*   string‐
       buffer, const unsigned char* string, int do_copy)
	      Append a string to a stringbuffer, copying it only if do_copy is
	      non-0.

       int   raptor_stringbuffer_append_decimal(raptor_stringbuffer*   string‐
       buffer, int integer)
	      Append a formatted decimal integer to a stringbuffer.

       int	  raptor_stringbuffer_append_stringbuffer(raptor_stringbuffer*
       stringbuffer, raptor_stringbuffer* append)
	      Append  a	 stringbuffer  append  to  a stringbuffer.  The append
	      stringbuffer is emptied but not destroyed.

       int     raptor_stringbuffer_prepend_counted_string(raptor_stringbuffer*
       stringbuffer, const unsigned char* string, size_t length, int do_copy)
	      Prepend a string of length bytes to the start of a stringbuffer,
	      copying it only if do_copy is non-0.

       int   raptor_stringbuffer_prepend_string(raptor_stringbuffer*   string‐
       buffer, const unsigned char* string, int do_copy)
	      Prepend a string to the start of a stringbuffer, copying it only
	      if do_copy is non-0.

       unsigned	 char	*   raptor_stringbuffer_as_string(raptor_stringbuffer*
       stringbuffer)
	      Return  the  stringbuffer	 as  a	single	string.	 The string is
	      shared and should be copied if needed.

       size_t raptor_stringbuffer_length(raptor_stringbuffer* stringbuffer)
	      Return the length of the stringbuffer.

       int   raptor_stringbuffer_copy_to_string(raptor_stringbuffer*   string‐
       buffer, unsigned char *string, size_t length)
	      Copy the stringbuffer into a single string buffer string of size
	      length.  Returns non-0 on failure.

IOSTREAM CLASS
       This class provides an I/O stream that can write to  filenames,	FILE*,
       strings and user-defined output via callbacks.

IOSTREAM CONSTRUCTOR
       raptor_iostream* raptor_new_iostream_from_handler2(void* context, const
       raptor_iostream_handler2 *handler)
	      Create a new raptor read or write iostream from  a  user-defined
	      raptor_iostream_handler2 handler that is called with the passed-
	      in context for the write operations.

       raptor_iostream* raptor_new_iostream_from_handler(void* context,	 const
       raptor_iostream_handler *handler)
	      DEPRECATED  in  1.4.17 - use raptor_new_iostream_from_handler2()
	      with the new handler format.  Create a new raptor read  iostream
	      from  a  user-defined  raptor_iostream_handler  handler  that is
	      called with the passed-in context for the write operations.

       raptor_iostream* raptor_new_iostream_to_sink(void)
	      Create a new raptor write iostream  that	discards  all  written
	      output.

       raptor_iostream* raptor_new_iostream_to_filename(const char *filename)
	      Create  a new raptor write iostream that creates and writes to a
	      new file filename.

       raptor_iostream* raptor_new_iostream_to_file_handle(FILE *handle)
	      Create a new raptor write iostream that creates and writes to an
	      existing, already opened, C Standard I/O handle FILE* handle.

       raptor_iostream*	 raptor_new_iostream_to_string(void **string_p, size_t
       *length_p, void *(*malloc_handler)(size_t size))
	      Create a new raptor write iostream which creates	a  new	string
	      once  raptor_free_iostream is called.  The new string pointer is
	      written in string, the length in length_p (if not NULL) and  the
	      memory  allocation is made using the malloc_handler, or if NULL,
	      raptor's default memory allocator.

       raptor_iostream* raptor_new_iostream_from_sink(void)
	      Create a new raptor read iostream that is	 immediately  finished
	      and returns end of file.

       raptor_iostream*	 raptor_new_iostream_from_filename(const  char	*file‐
       name)
	      Create a new raptor read iostream from an	 existing  file	 file‐
	      name.

       raptor_iostream* raptor_new_iostream_from_file_handle(FILE *handle)
	      Create  a	 new  raptor  read  iostream from an already opened, C
	      Standard I/O handle FILE* handler.

       raptor_iostream* raptor_new_iostream_from_string(void  *string,	size_t
       length)
	      Create  a	 new  raptor  read  iostream  reading from an existing
	      string of length bytes.

IOSTREAM DESTRUCTOR
       void raptor_free_iostream(raptor_iostream *iostr)
	      Destroy a Raptor iostream object.

IOSTREAM METHODS
       int  raptor_iostream_write_bytes(raptor_iostream	 *iostr,  const	  void
       *ptr, size_t size, size_t nmemb)
	      Write  a	counted	 set of elements to an iostream. Inmemb is the
	      count of elements of size size, starting at memory ptr.  Similar
	      to fwrite(3) and write(2).

       int raptor_iostream_write_byte(raptor_iostream *iostr, const int byte)
	      Write a single byte an iostream.	Similar to fputc(3).

       void raptor_iostream_write_end(raptor_iostream *iostr)
	      Finish writing to an iostream.

       int  raptor_iostream_write_string(raptor_iostream  *iostr,  const  void
       *string)
	      Write a  NUL-terminated  string  to  an  iostream.   Similar  to
	      fputs(3).

       int  raptor_iostream_write_counted_string(raptor_iostream *iostr, const
       void *string, size_t len)
	      Write a string of length len to an iostream.

       unsigned long raptor_iostream_tell(raptor_iostream *iostr)
	      Return the byte offset into the iostream.

       size_t raptor_iostream_get_bytes_written_count(raptor_iostream *iostr)
	      DEPRECATED in 1.4.17  for	 raptor_iostream_tell().   Return  the
	      number of bytes written so far to the iostream.

       int raptor_iostream_write_decimal(raptor_iostream *iostr, int integer)
	      Write a decimal formatted integer integer to the iostream.

       int raptor_iostream_format_hexadecimal(raptor_iostream *iostr, unsigned
       int integer, int width)
	      Write a hexadecimal formatted unsigned integer to the  iostream,
	      left-padded with '0's to width columns.

       int   raptor_iostream_write_stringbuffer(raptor_iostream*  iostr,  rap‐
       tor_stringbuffer *sb)
	      Write the stringbuffer to an iostream iostr.

       int  raptor_iostream_read_bytes(raptor_iostream*	 iostr,	  void	 *ptr,
       size_t size, size_t nmemb)
	      Read  bytes  from	 the iostream into buffer ptr up to nmemb ele‐
	      ments of size size.

       int raptor_iostream_read_eof(raptor_iostream *iostr)
	      Return non-0 if the iostream is finished.

XML SAX2 READER CLASS
       This class provides the functionality  to  generate  SAX2  events  from
       parsing XML content, including XML namespace support.

XML SAX2 CONSTRUCTOR
       raptor_sax2*  raptor_new_sax2(void  *user_data,	raptor_error_handlers*
       error_handlers)
	      Create a new SAX2	 XML  reader  with  the	 given	error  handler
	      object.

XML WRITER DESTRUCTOR
       void raptor_free_sax2(raptor_sax2 *sax2)
	      Destroy a SAX2 XML reader object.

SAX2 SET HANDLER METHODS
       void   raptor_sax2_set_start_element_handler(raptor_sax2	  *sax2,  rap‐
       tor_sax2_start_element_handler handler)
	      Set the SAX2 start element handler.

       void   raptor_sax2_set_end_element_handler(raptor_sax2	*sax2,	  rap‐
       tor_sax2_end_element_handler handler)
	      Set the SAX2 end element handler.

       void    raptor_sax2_set_characters_handler(raptor_sax2	 *sax2,	  rap‐
       tor_sax2_characters_handler handler)
	      Set the SAX2 character data element handler.

       void	raptor_sax2_set_cdata_handler(raptor_sax2     *sax2,	  rap‐
       tor_sax2_cdata_handler handler)
	      Set the SAX2 CDATA section element handler.

       void	raptor_sax2_set_comment_handler(raptor_sax2	*sax2,	  rap‐
       tor_sax2_comment_handler handler)
	      Set the SAX2 XML comment handler.

       void  raptor_sax2_set_unparsed_entity_decl_handler(raptor_sax2	*sax2,
       raptor_sax2_unparsed_entity_decl_handler handler)
	      Set the SAX2 XML unparsed entity declaration handler.

       void   raptor_sax2_set_external_entity_ref_handler(raptor_sax2	*sax2,
       raptor_sax2_external_entity_ref_handler handler)
	      Set the SAX2 XML external entity reference handler.

       void raptor_sax2_set_namespace_handler(raptor_sax2 *sax2, raptor_names‐
       pace_handler handler)
	      Set  the	SAX2  XML  namespace  declaration  handler when an XML
	      namespace is declared.

SAX2 PARSING METHODS
       void raptor_sax2_parse_start(raptor_sax2 *sax2, raptor_uri *base_uri)
	      Start a SAX2 parse of XML content with the base URI uri.

       int  raptor_sax2_parse_chunk(raptor_sax2	 *sax2,	 const	unsigned  char
       *buffer, size_t len, int is_end)
	      Parse  the  XML  content	in  buffer  of size len returning SAX2
	      events via handlers.  If is_end is non-zero,  it	indicates  the
	      end  of  the parsing.  This method can only be called after rap‐
	      tor_sax2_parse_start().

SAX2 SCOPE METHODS
       const   unsigned	  char*	  raptor_sax2_inscope_xml_language(raptor_sax2
       *sax2)
	      Get the current in-scope XML language (xml:lang) value.

       raptor_uri* raptor_sax2_inscope_base_uri(raptor_sax2 *sax2)
	      Get  the current in-scope Base URI (xml:base or document or pro‐
	      tocol) value.

XML ELEMENT CLASS
       This class provides an XML element that can be used with the XML Writer
       Class to generate XML documents.

XML ELEMENT CONSTRUCTORS
       raptor_xml_element*  raptor_new_xml_element(raptor_qname*  name,	 const
       unsigned char* xml_language, raptor_uri* xml_base)
	      Create a new XML element with the element name name in the  con‐
	      text of xml:lang xml_language and base URI xml_base.

       raptor_xml_element*		    raptor_new_xml_element_from_names‐
       pace_local_name(raptor_namespace *ns, const unsigned char *name,	 const
       unsigned char* xml_language, raptor_uri* xml_base
	      Create  a	 new  XML element based on the given XML namespace and
	      localname in the context of xml:lang xml_language and  base  URI
	      xml_base.

XML ELEMENT DESTRUCTOR
       void raptor_free_xml_element(raptor_xml_element *element)
	      Destroy a XML element object.

XML ELEMENT METHODS
       raptor_qname*  raptor_xml_element_get_name(raptor_xml_element* xml_ele‐
       ment)
	      Get the XML element QName of XML element xml_element.

       void raptor_xml_element_set_attributes(raptor_xml_element* xml_element,
       raptor_qname **attributes, int count)
	      Set  the	attributes  on XML element xml_element to the array of
	      QNames in array attributes of size count.

       raptor_qname**	 raptor_xml_element_get_attributes(raptor_xml_element*
       xml_element)
	      Get  the attributes of an XML element xml_element as an array of
	      QNames.  As set by void raptor_xml_element_set_attributes.

       int	   raptor_xml_element_get_attributes_count(raptor_xml_element*
       xml_element)
	      Get  the	number	of attributes of an XML element xml_element as
	      set by void raptor_xml_element_set_attributes.

       int  raptor_xml_element_declare_namespace(raptor_xml_element*  xml_ele‐
       ment, raptor_namespace* nspace)
	      Declare  an  XML	namespace  nspace  expliclitly	on XML element
	      xml_element.  Namespaces used in the element or attribute	 names
	      are  automatically  declared, this method allows additional ones
	      to be done.

       int raptor_xml_element_is_empty(raptor_xml_element* xml_element)
	      Return non-0 if the XML element is empty.

       int  raptor_iostream_write_xml_element(raptor_iostream*	 iostr,	  rap‐
       tor_xml_element *element, raptor_namespace_stack* nstack, int is_empty,
       int   is_end,   raptor_simple_message_handler   error_handler,	 void*
       error_data, int depth)
	      Write  a XML element xml_element to iostream ostr.  This is done
	      in context of an XML namespace stack nstack and at  depth	 depth
	      in the stack (see Namespace class constructors).

	      The  element  may be an empty element if is_empty is non-zero or
	      may be a close element if is_end is non-zero (else  is  a	 start
	      element).	  The error_handler method along with error_data allow
	      error reporting to be given.

       const  unsigned	char*  raptor_xml_element_get_language(raptor_xml_ele‐
       ment* xml_element)
	      Get the xml:lang language of the XML element.

XML WRITER CLASS
       This  class provides the functionality to generate simple XML documents
       consisting of elements with attributes, character  data	and  comments.
       The documents can be written to an iostream.

XML WRITER CONSTRUCTOR
       raptor_xml_writer*	 raptor_new_xml_writer(raptor_namespace_stack*
       nstack,	raptor_uri_handler*  uri_handler,  void*   uri_context,	  rap‐
       tor_iostream*  iostr, raptor_simple_message_handler error_handler, void
       *error_data, int canonicalize)
	      Create  a	 new  XML  Writer  writing  to	iostream  iostr.   The
	      error_handler method along with error_data allow error reporting
	      to be given.  nstack is either an existing namespace stack to be
	      used  or	if NULL, a new one with only the XML namespace defined
	      is created.  Note that raptor_uri_get_handler can be  useful  to
	      return  the current raptor URI handler/context.  canonicalize is
	      currently unused and should be set to 1 but may allow non-canon‐
	      ical XML writing to be allowed in future.

XML WRITER DESTRUCTOR
       void raptor_free_xml_writer(raptor_xml_writer* xml_writer)
	      Destroy a XML Writer object.

XML WRITER METHODS
       void   raptor_xml_writer_empty_element(raptor_xml_writer*   xml_writer,
       raptor_xml_element *element)
	      Write XML element element as an empty element (no	 element  con‐
	      tent) to the XML Writer xml_writer.

       void   raptor_xml_writer_start_element(raptor_xml_writer*   xml_writer,
       raptor_xml_element *element)
	      Write a start element along with	an  attributes	and  namespace
	      declarations   for   XML	element	 element  to  the  XML	Writer
	      xml_writer.

       void raptor_xml_writer_end_element(raptor_xml_writer* xml_writer,  rap‐
       tor_xml_element *element)
	      Write  an	 end  element  form for XML element element to the XML
	      Writer xml_writer.

       void   raptor_xml_writer_cdata(raptor_xml_writer*   xml_writer,	 const
       unsigned char *str)
	      Write  XML  character  data in str to the XML Writer xml_writer.
	      The characters in str will be XML escaped.

       void   raptor_xml_writer_cdata_counted(raptor_xml_writer*   xml_writer,
       const unsigned char* str, unsigned int length)
	      Write  XML  character  data  in  str of length length to the XML
	      Writer xml_writer.  The characters in str will be XML escaped.

       void   raptor_xml_writer_raw(raptor_xml_writer*	  xml_writer,	 const
       unsigned char* str)
	      Write  character data in str length to the XML Writer xml_writer
	      without XML escaping.

       void raptor_xml_writer_raw_counted(raptor_xml_writer* xml_writer, const
       unsigned char* str, unsigned int length)
	      Write  character	data in str of length length to the XML Writer
	      xml_writer without XML escaping.

       void  raptor_xml_writer_comment(raptor_xml_writer*  xml_writer,	 const
       unsigned char* str)
	      Write an XML comment in str to the XML Writer xml_writer.

       void  raptor_xml_writer_comment_counted(raptor_xml_writer*  xml_writer,
       const unsigned char* str, unsigned int length)
	      Write an XML comment in str of length length to the  XML	Writer
	      xml_writer.

       int  raptor_xml_writer_features_enumerate(const raptor_feature feature,
       const char **name, raptor_uri **uri, const char **label)
	      Return the name, URI, string label (all  optional)  for  an  XML
	      write feature, returning non-zero if no such feature exists.

       Raptor features have URIs that are constructed from the URI http://fea‐
       ture.librdf.org/raptor- and the name so for example feature  scanForRDF
       has URI http://feature.librdf.org/raptor-scanForRDF

       int  raptor_xml_writer_set_feature(raptor_xml_writer*  xml_writer, rap‐
       tor_feature feature, int value)
	      Set an  XML  writer  feature  feature  to	 a  particular	value.
	      Returns non 0 on failure or if the feature is unknown.  The cur‐
	      rent defined writer features are:
		Feature					Values
		RAPTOR_FEATURE_WRITER_AUTO_INDENT	Boolean (non 0 true)
		RAPTOR_FEATURE_WRITER_AUTO_EMPTY	Boolean (non 0 true)
		RAPTOR_FEATURE_WRITER_INDENT_WIDTH	Integer
		RAPTOR_FEATURE_WRITER_XML_DECLARATION	Boolean (non 0 true)

       If the writer_auto_indent feature is set (default true), the XML writer
       will automatically indent the output.

       If  the writer_auto_empty feature is set (default true), the XML writer
       will automatically generate  empty  elements  if	 a  start/end  element
       sequence has no content.

       If the writer_indent_width feature is set (default 2) if the XML writer
       is outputing indented XML, it will use that many spaces.

       If the writer_xml_declaration feature is set  (default  true)  the  XML
       declaration is written at the start of serialized XML.

       int raptor_xml_writer_set_feature_string(raptor_xml_writer *xml_writer,
       raptor_feature feature, const unsigned char *value)
	      Set an XML writer feature feature to a particular string	value.
	      Returns non 0 on failure or if the feature is unknown.  The cur‐
	      rent  defined  XML   writer   features   are   given   in	  rap‐
	      tor_xml_writer_set_feature and at present only take integer val‐
	      ues. If an integer value feature	is  set	 with  this  function,
	      value is interpreted as an integer and then that value is used.

       int  raptor_xml_writer_get_feature(raptor_xml_writer*  xml_writer, rap‐
       tor_feature feature)
	      Get XML writer feature integer values.  The allowed feature val‐
	      ues and types are given under raptor_xml_writer_features_enumer‐
	      ate.

       const	unsigned    char    *raptor_xml_writer_get_feature_string(rap‐
       tor_xml_writer* xml_writer, raptor_feature feature)
	      Get XML writer feature string values. The allowed feature values
	      and types are given under raptor_xml_writer_features_enumerate.

       int raptor_xml_writer_get_depth(raptor_xml_writer* xml_writer)
	      Get the current XML writer element stack depth.

       void raptor_xml_writer_flush(raptor_xml_writer* xml_writer)
	      Flush the XML writer output for any pending writes.

       void raptor_xml_writer_newline(raptor_xml_writer* xml_writer)
	      Write a newline to the XML writer (which may  trigger  indenting
	      before the next item).

WORLD CLASS
       This  class stores the library state and configuration.	It will be the
       main class for initialsiing and configuring the library in Raptor 2.0.

WORLD CLASS CONSTRUCTOR
       raptor_world* raptor_new_world(void)
	      Create a new raptor library object.

WORLD CLASS DESTRUCTOR
       void raptor_free_world(raptor_world* world)
	      Destroy a raptor library object and free all resources.

WORLD CLASS METHODS
       int raptor_world_open(raptor_world* world)
	      Start using a raptor library - allocate any dependent resources.
	      This is optional.

       void raptor_world_set_libxslt_security_preferences(raptor_world *world,
       void *security_preferences)
	      See raptor_set_libxslt_security_preferences() description.

       void raptor_world_set_libxml_flags(raptor_world *world,	int flags)
	      See raptor_set_libxml_flags() description.

API CHANGES
   1.4.19
       Added raptor_world class to prepare for V2 API  with  constructor  rap‐
       tor_new_world(),	  destructor   raptor_free_world()  and	 methods  rap‐
       tor_world_open(),  raptor_world_set_libxslt_security_preferences()  and
       raptor_world_set_libxml_flags().

       The raptor_identifier, raptor_error_handlers structs both gained a rap‐
       tor_world* pointer field.

       Added	  raptor_set_libxslt_security_preferences()	 and	  rap‐
       tor_set_libxml_flags().

       Added	 raptor_libxml_flags	 enum	  for	  flags	   for	  rap‐
       tor_world_set_libxml_flags() and raptor_set_libxml_flags().

       Added RAPTOR_FEATURE_PREFIX_ELEMENTS

   1.4.18
       Added atom serializer

       Added rdfa parser

       Added serializer features  RAPTOR_FEATURE_RSS_TRIPLES  and  RAPTOR_FEA‐
       TURE_ATOM_ENTRY_URI

       Added raptor_qname_to_counted_name()

       Added raptor_serialize_start_to_iostream()

       Added raptor_sequence_delete_at()

       Added raptor_xml_writer_newline()

       Added raptor_xml_writer_flush()

       Added raptor_xml_writer_get_depth()

   1.4.17
       Added  SAX2  class  raptor_sax2.	  Added	 new  SAX2  API typedefs: rap‐
       tor_sax2_start_element_handler,	raptor_sax2_end_element_handler,  rap‐
       tor_sax2_characters_handler,	  raptor_sax2_cdata_handler,	  rap‐
       tor_sax2_comment_handler, raptor_sax2_unparsed_entity_decl_handler  and
       raptor_sax2_external_entity_ref_handler.	 Added new SAX2 API functions:
       raptor_new_sax2(),    raptor_free_sax2(),    raptor_sax2_set_start_ele‐
       ment_handler(),	     raptor_sax2_set_end_element_handler(),	  rap‐
       tor_sax2_set_characters_handler(),     raptor_sax2_set_cdata_handler(),
       raptor_sax2_set_comment_handler(),				  rap‐
       tor_sax2_set_unparsed_entity_decl_handler(),	raptor_sax2_set_exter‐
       nal_entity_ref_handler(),   raptor_sax2_set_namespace_handler(),	  rap‐
       tor_sax2_parse_start(),	       raptor_sax2_parse_chunk(),	  rap‐
       tor_sax2_inscope_xml_language() and raptor_sax2_inscope_base_uri()

       Added	  features	RAPTOR_FEATURE_WRITE_BASE_URI,	   RAPTOR_FEA‐
       TURE_WWW_HTTP_CACHE_CONTROL,  RAPTOR_FEATURE_WWW_HTTP_USER_AGENT,  RAP‐
       TOR_FEATURE_JSON_CALLBACK and RAPTOR_FEATURE_JSON_EXTRA_DATA

       Added raptor_handler_closure structure for error handlers.

       Added raptor_statement_compare()

       Added   raptor_iostream_write_string_python()   and   deprecated	  rap‐
       tor_iostream_write_string_turtle()

       raptor_uri_set_handler(),  raptor_uri_get_handler(),  raptor_new_names‐
       paces(),	 raptor_namespaces_init() and raptor_new_xml_writer() now take
       const handler pointers.

       Added raptor_www_set_http_cache_control()

       Added  QName   class   methods:	 raptor_qname_get_local_name(),	  rap‐
       tor_qname_get_value() and raptor_qname_get_counted_value()

       Added	  raptor_iostream      read	 handler     typedefs	  rap‐
       tor_iostream_read_bytes_func, raptor_iostream_read_eof_func  and	 added
       new   structure	 raptor_iostream_handler2  replacing  deprecated  rap‐
       tor_iostream_handler.

       Added  raptor_new_iostream_from_handler2()  replacing  deprecated  rap‐
       tor_new_iostream_from_handler()

       Added  raptor_new_iostream_from_sink(),	raptor_new_iostream_from_file‐
       name(),	    raptor_new_iostream_from_file_handle()	and	  rap‐
       tor_new_iostream_from_string().

       Added  raptor_iostream_tell deprecating raptor_iostream_get_bytes_writ‐
       ten_count().

       Added raptor_iostream_read_bytes() and raptor_iostream_read_eof().

       Added raptor_xml_element_get_language().

       Added new enum raptor_log_level.

       Added  new  typedef  raptor_error_handlers.   and  new  function	  rap‐
       tor_error_handlers_init().

   1.4.16
       raptor_namespaces_init() now returns an integer status

       Added raptor_new_xml_element_from_namespace_local_name()

       Added raptor_uri_compare().

       Added	new    features	   for	 the   'grddl'	 parser:   RAPTOR_FEA‐
       TURE_HTML_TAG_SOUP,   RAPTOR_FEATURE_MICROFORMATS    and	   RAPTOR_FEA‐
       TURE_HTML_LINK.

       Added parser feature RAPTOR_FEATURE_WWW_TIMEOUT

       Added raptor_graph_handler typedef and raptor_set_graph_handler()

       Added	  raptor_www_final_uri_handler	    typedef	 and	  rap‐
       tor_www_set_final_uri_handler()

       Added raptor_www_set_connection_timeout()

       Added raptor_www_get_final_uri()

   1.4.15
       No changes.

   1.4.14
       Add  two	 new   exported	  strings   raptor_license_string   and	  rap‐
       tor_home_url_string.

       Added	new   features	 for   the   'dot'   serializer:   RAPTOR_FEA‐
       TURE_RESOURCE_BORDER,	RAPTOR_FEATURE_LITERAL_BORDER,	   RAPTOR_FEA‐
       TURE_BNODE_BORDER,   RAPTOR_FEATURE_RESOURCE_FILL,  RAPTOR_FEATURE_LIT‐
       ERAL_FILL and RAPTOR_FEATURE_BNODE_FILL

       Added raptor_parser_generate_id()

       Added raptor_iostream_write_string_turtle()

   1.4.13
       No API changes.

   1.4.12
       No API changes.

   1.4.11
       Added raptor_get_feature_count()

       Added raptor_get_need_base_uri()

       Added parser feature RAPTOR_FEATURE_NO_NET

       Added raptor_www_set_uri_filter(), raptor_parser_set_uri_filter()  with
       filter type raptor_uri_filter_func

   1.4.10
       No API changes.

   1.4.9
       Added raptor_parser_get_accept_header()

       Added raptor_xml_element_is_empty()

       Added raptor_qname_get_namespace()

       Added raptor_iostream_write_uri()

       Added raptor_namespaces_qname_from_uri().

       Added raptor_namespace_get_counted_prefix()

       Added raptor_serialize_set_namespace_from_namespace()

       Deprecated	raptor_uri_is_file_uri()       for	 new	  rap‐
       tor_uri_string_is_file_uri().

       Added	raptor_xml_element_get_attributes()    and     raptor_xml_ele‐
       ment_get_attributes_count()

   1.4.8
       Added raptor_set_namespace_handler().

       Added	XML    1.1    serializing    support,	 feature   RAPTOR_FEA‐
       TURE_WRITER_XML_VERSION with shortname xmlVersion  for  serializer  and
       xml writer classes to support it.  Added XML writer feature RAPTOR_FEA‐
       TURE_WRITER_XML_DECLARATION to control generation of the	 XML  declara‐
       tion.   Added  new  functions  raptor_xml_any_escape_string()  and rap‐
       tor_iostream_write_xml_any_escaped_string() to allow generating XML 1.1
       or XML 1.0.

       RAPTOR_IDENTIFIER_TYPE_PREDICATE	 will no longer be generated from ver‐
       sion 1.4.9 onwards as the type of returned statement predicates.	  RAP‐
       TOR_IDENTIFIER_TYPE_RESOURCE will be returned.

       RAPTOR_IDENTIFIER_TYPE_ORDINAL  may no longer be generated from version
       1.4.9 onwards, RAPTOR_IDENTIFIER_TYPE_RESOURCE may replace it.

   1.4.7
       No changes.

   1.4.6
       No changes.

   1.4.5
       Deprecated  raptor_ntriples_string_as_utf8_string()  (never  documented
       above)  since  it can only work with a raptor_parser object which makes
       it rather unusable alone.

       Added XML writer features and support functions	raptor_xml_writer_fea‐
       tures_enumerate(),	  raptor_xml_writer_set_feature(),	  rap‐
       tor_xml_writer_set_feature_string(),    raptor_xml_writer_get_feature()
       and raptor_xml_writer_get_feature_string()

   1.4.3
       Added  XML Writer class (raptor_xml_writer) and XML Element class (rap‐
       tor_xml_element)

       Added	raptor_parser_get_feature_string(),	raptor_parser_set_fea‐
       ture_string(),  raptor_serializer_set_feature_string(),	raptor_serial‐
       izer_get_feature_string() and raptor_feature_value_type().

       Added raptor_serializer_set_namespace,  raptor_serializer_set_feature()
       and raptor_serializer_get_feature().

       Added	     raptor_new_namespace_from_uri(),	     raptor_new_names‐
       pace_parts_from_string(),      Added	 raptor_namespaces_find_names‐
       pace_by_uri().  and raptor_iostream_write_namespace() to write a names‐
       pace declaration to an iostream.

       Added	 copy	  constructor	  raptor_qname_copy()	  and	  rap‐
       tor_iostream_write_qname() to write a qname to an iostream.

       Added raptor_sequence_join() to join two sequences, leaving one empty.

       Added  raptor_iostream_write_stringbuffer()  to write a stringbuffer to
       an iostream.

       Added  N-Triples	  raptor_iostream_write_string_ntriples()   and	  rap‐
       tor_iostream_write_statement_ntriples()	utility	 functions for writing
       to raptor_iostreams.

       Added raptor_uri_to_relative_counted_uri_string(),  raptor_uri_to_rela‐
       tive_uri_string().   raptor_uri_print(), raptor_uri_to_counted_string()
       and raptor_uri_to_string()

       Added unicode name checking utility functions for XML 1.0 and  XML  1.1
       name  starting  character  and  continued  name character.  raptor_uni‐
       code_is_xml10_namestartchar   raptor_unicode_is_xml10_namechar,	  rap‐
       tor_unicode_is_xml11_namechar	 and	raptor_unicode_is_xml11_names‐
       tartchar.

       Added raptor_xml_name_check to check if a name is a legal  XML  1.0  or
       1.0  name.   and	 raptor_iostream_write_xml_escaped_string  to write an
       XML-escaped string to an iostream.

       Added UTF8-checking utility function raptor_utf8_check.

   1.4.2
       No changes.

   1.4.1
       The raptor_xml_escape_string now returns <0 on failure rather  than  0,
       so that if an empty string is escaped, 0 bytes required is returned.

   1.4.0
       Added  new raptor_serializer class supporting RDF/XML (name rdfxml) and
       N-Triples (name ntriples).
       Added new raptor_iostream class
       Added raptor_stringbuffer_copy_to_string to allow efficient copy-out of
       a constructed string.
       Added  raptor_www_fetch_to_string to allow retrieving of web content as
       a single string.

   1.3.3
       Added raptor_calloc_memory to provide a calloc inside raptor.
       Added feature check_rdf_id (see raptor_set_feature documentation).

   1.3.2
       Added raptor_alloc_memory to allocate memory inside raptor.

       Added accessor functions for the public raptor_locator structure:

       raptor_locator_line
       raptor_locator_column
       raptor_locator_byte
       raptor_locator_file
       raptor_locator_uri

   1.3.1
       Correct raptor_print_statement declaration argument statement  to  have
       one less 'const', to match the code.

   1.3.0
       Added  the  following  parser methods, utility methods and helper func‐
       tions:

       raptor_new_parser_for_content (Parser class constructor)
       raptor_get_mime_type
       raptor_get_feature
       raptor_syntax_name_check
       raptor_guess_parser_name
       raptor_features_enumerate
       raptor_feature_from_uri
       raptor_www_set_http_accept (WWW class)

       Changed raptor_set_feature to now return an int success or failure.

       Added the following functions:
       raptor_free_memory
       raptor_unicode_char_to_utf8
       raptor_utf8_to_unicode_char
       raptor_vsnprintf

       Added the raptor_sequence class, its constructor,  destructor,  methods
       and helper functions.

       Added  the  raptor_stringbuffer	class  and constructor, destructor and
       methods.

       Deprecated raptor_print_statement_detailed always intended to be inter‐
       nal.

   1.2.0
       Added  raptor_syntaxes_enumerate to get full information on syntax mime
       type and URIs as well as name and label.

       N-Triples Plus parser renamed to Turtle (name turtle)

   1.1.0
       Added N-Triples Plus parser (name ntriples-plus)

       Made URI class constructors, methods and factory	 methods  as  well  as
       some  other  utility functions using or returning URIs or literals take
       unsigned char* rather than char*.  The affected calls are:

       URI factory methods changed to all take/return unsigned char*  for  URI
       strings:
       raptor_new_uri_func
       raptor_new_uri_from_local_name_func
       raptor_new_uri_relative_to_base_func
       raptor_uri_as_string_func
       raptor_uri_as_counted_string_func

       Constructors  and methods changed to take/return unsigned char* for URI
       strings:
       raptor_statement_part_as_counted_string
       raptor_statement_part_as_string
       raptor_new_uri
       raptor_new_uri_from_uri_local_name
       raptor_new_uri_relative_to_base
       raptor_uri_as_string
       raptor_uri_as_counted_string
       raptor_print_ntriples_string

       Changed to use unsigned char* for URI strings, char* for filenames:
       raptor_uri_resolve_uri_reference
       raptor_uri_filename_to_uri_string
       raptor_uri_uri_string_to_filename
       raptor_uri_uri_string_to_filename_fragment
       raptor_uri_is_file_uri

       Changed to return unsigned char* for UTF8 string:
       raptor_ntriples_string_as_utf8_string

       Added raptor_parsers_enumerate to discover supported parsers.

       Added raptor_uri_uri_string_to_filename_fragment with fragment  arg  to
       return the URI fragment.

       Made  the  raptor_namespace,  raptor_namespace_stack  and  raptor_qname
       class and APIs public.

       Added feature non_nfc_fatal (see raptor_set_feature documentation).

   1.0.0
       Removed the following  deprecated  methods  and	functions  (see	 0.9.6
       changes for the new names):
       raptor_free,   raptor_new,  raptor_ntriples_free,  raptor_ntriples_new,
       raptor_ntriples_parse_file,   raptor_ntriples_set_error_handler,	  rap‐
       tor_ntriples_set_fatal_error_handler,	    raptor_ntriples_set_state‐
       ment_handler and raptor_parser_abort.

       Added raptor_parse_file_stream for reading FILE* streams without neces‐
       sarily having a file.

   0.9.12
       Added  raptor_new_uri_for_retrieval  to	turn  URI references into URIs
       suitable for retrieval (no fragments).

   0.9.11
       Added raptor_get_name and raptor_get_label.

       raptor_xml_escape_string now takes error message handler, data pointer,
       loses parser argument.

       Added  raptor_set_default_generate_id_parameters	 and raptor_set_gener‐
       ate_id_handler to control the default generation	 of  IDs,  allow  full
       customisation.

   0.9.10
       Added  raptor_set_parser_strict and raptor_www_no_www_library_init_fin‐
       ish.

       raptor_xml_escape_string now takes an output string length pointer.

       Added	  raptor_statement_part_as_counted_string,	 raptor_state‐
       ment_part_as_string and raptor_parse_abort.

       Deprecated raptor_parser_abort.

   0.9.9
       Added  raptor_www  class and all its constructors, destructor, methods,
       calls.

       Added	    raptor_parse_uri,	     raptor_parser_abort,	  rap‐
       tor_ntriples_term_as_string and raptor_xml_escape_string.

   0.9.7
       raptor_parse_chunk,  raptor_new_uri_from_id, arguments are now unsigned
       char.

       Added raptor_new_uri_for_xmlbase.

   0.9.6
       In this version, the raptor/ntriples parser calling APIs were modified.
       The following table lists the changes:

       OLD API					NEW API (0.9.6+)
       raptor_new()				raptor_new_parser("rdfxml")
       ntriples_new()				raptor_new_parser("ntriples")
       raptor_free				raptor_free_parser
       ntriples_free				raptor_ntriples_parser
       raptor_ntriples_parse_file		raptor_parse_file
       raptor_ntriples_set_error_handler	raptor_set_error_handler
       raptor_ntriples_set_fatal_error_handler	raptor_set_fatal_error_handler
       raptor_ntriples_set_statement_handler	raptor_set_statement_handler

CONFORMING TO
       RDF/XML	Syntax	(Revised),  Dave  Beckett  (ed.)   W3C Recommendation,
       http://www.w3.org/TR/rdf-syntax-grammar/	    ⟨http://www.w3.org/TR/rdf-
       syntax-grammar/⟩

       N-Triples,  in  RDF  Test Cases, Jan Grant and Dave Beckett (eds.)  W3C
       Recommendation,		  http://www.w3.org/TR/rdf-testcases/#ntriples
       ⟨http://www.w3.org/TR/rdf-testcases/#ntriples⟩

       Turtle	  -    Terse	RDF    Triple	 Language,    Dave    Beckett,
       http://www.dajobe.org/2004/01/turtle/
       ⟨http://www.dajobe.org/2004/01/turtle/⟩

       RSS     0.91	spec	 revision     3,    Dan	   Libby,    Netscape,
       http://my.netscape.com/publish/formats/rss-spec-0.91.html
       ⟨http://my.netscape.com/publish/formats/rss-spec-0.91.html⟩

       RDF    Site    Summary	 (RSS)	  1.0,	  http://purl.org/rss/1.0/spec
       ⟨http://purl.org/rss/1.0/spec⟩

       Atom	  1.0	    syndication	       format,	      RFC	 4287,
       http://www.ietf.org/rfc/rfc4287.txt
       ⟨http://www.ietf.org/rfc/rfc4287.txt⟩

       Gleaning Resource Descriptions from Dialects of Languages (GRDDL),  Dan
       Connolly	      (ed.),	   W3C	     Recommendation,	   2007-09-11,
       http://www.w3.org/TR/2007/REC-grddl-20070911/
       ⟨http://www.w3.org/TR/2007/REC-grddl-20070911/⟩

       RDFa  in	 XHTML:	 Syntax and Processing, Ben Adida, Mark Birbeck, Shane
       McCarron, Steven Pemberton (eds.)
	W3C  Recommendation,  2008-10-14,  http://www.w3.org/TR/2008/REC-rdfa-
       syntax-20081014/ ⟨http://www.w3.org/TR/2008/REC-rdfa-syntax-20081014/⟩

SEE ALSO
       rapper(1),raptor-config(1)

AUTHOR
       Dave Beckett - http://www.dajobe.org/ ⟨http://www.dajobe.org/⟩

ATTRIBUTES
       See attributes(5) for descriptions of the following attributes:

       ┌───────────────────────────────┬─────────────────────────────┐
       │ATTRIBUTE TYPE^ATTRIBUTE VALUE │			     │
       ├───────────────────────────────┼─────────────────────────────┤
       │Availability^SUNWraptor	       │			     │
       ├───────────────────────────────┼─────────────────────────────┤
       │Interface stability^Volatile   │			     │
       └───────────────────────────────┴─────────────────────────────┘

				  2009-07-18			  libraptor(3)
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