/* -*- Mode: c; c-basic-offset: 2 -*-
 *
 * raptor.h - Redland Parser Toolkit for RDF (Raptor) interfaces and definition
 *
 * $Id: raptor.h,v 1.171 2005/02/01 22:00:36 cmdjb Exp $
 *
 * Copyright (C) 2000-2005, David Beckett http://purl.org/net/dajobe/
 * Institute for Learning and Research Technology http://www.ilrt.bristol.ac.uk/
 * University of Bristol, UK http://www.bristol.ac.uk/
 * 
 * This package is Free Software and part of Redland http://librdf.org/
 * 
 * It is licensed under the following three licenses as alternatives:
 *   1. GNU Lesser General Public License (LGPL) V2.1 or any newer version
 *   2. GNU General Public License (GPL) V2 or any newer version
 *   3. Apache License, V2.0 or any newer version
 * 
 * You may not use this file except in compliance with at least one of
 * the above three licenses.
 * 
 * See LICENSE.html or LICENSE.txt at the top of this package for the
 * complete terms and further detail along with the license texts for
 * the licenses in COPYING.LIB, COPYING and LICENSE-2.0.txt respectively.
 * 
 * 
 */



#ifndef RAPTOR_H
#define RAPTOR_H


#ifdef __cplusplus
extern "C" {
#endif

#include <stdio.h>

/* Required for va_list in raptor_vsnprintf */
#include <stdarg.h>

#ifdef WIN32
#  ifdef RAPTOR_STATIC
#    define RAPTOR_API
#  else
#    ifdef RAPTOR_INTERNAL
#      define RAPTOR_API __declspec(dllexport)
#    else
#      define RAPTOR_API __declspec(dllimport)
#    endif
#  endif
#else
#  define RAPTOR_API
#endif

/* Use gcc 3.1+ feature to allow marking of deprecated API calls.
 * This gives a warning during compiling.
 */
#if ( __GNUC__ == 3 && __GNUC_MINOR__ > 0 ) || __GNUC__ > 3
#ifdef __APPLE_CC__
/* OSX gcc cpp-precomp is broken */
#define RAPTOR_DEPRECATED
#else
#define RAPTOR_DEPRECATED __attribute__((deprecated))
#endif
#else
#define RAPTOR_DEPRECATED
#endif

typedef void* raptor_uri;


/* Public statics */
RAPTOR_API extern const char * const raptor_short_copyright_string;
RAPTOR_API extern const char * const raptor_copyright_string;
RAPTOR_API extern const char * const raptor_version_string;
RAPTOR_API extern const unsigned int raptor_version_major;
RAPTOR_API extern const unsigned int raptor_version_minor;
RAPTOR_API extern const unsigned int raptor_version_release;
RAPTOR_API extern const unsigned int raptor_version_decimal;

RAPTOR_API extern const unsigned char * const raptor_xml_namespace_uri;
RAPTOR_API extern const unsigned char * const raptor_rdf_namespace_uri;
RAPTOR_API extern const unsigned char * const raptor_rdf_schema_namespace_uri;
RAPTOR_API extern const unsigned char * const raptor_xmlschema_datatypes_namespace_uri;
RAPTOR_API extern const unsigned char * const raptor_owl_namespace_uri;

RAPTOR_API extern const unsigned int raptor_rdf_namespace_uri_len;

RAPTOR_API extern const unsigned char * const raptor_xml_literal_datatype_uri_string;
RAPTOR_API extern const unsigned int raptor_xml_literal_datatype_uri_string_len;


/* Public structure */
typedef struct raptor_parser_s raptor_parser;
typedef struct raptor_serializer_s raptor_serializer;

typedef struct raptor_www_s raptor_www;
typedef struct raptor_iostream_s raptor_iostream;

typedef struct raptor_xml_element_s raptor_xml_element;
typedef struct raptor_xml_writer_s raptor_xml_writer;

typedef struct raptor_qname_s raptor_qname;
typedef struct raptor_namespace_s raptor_namespace;
typedef struct raptor_namespace_stack_s raptor_namespace_stack;

/* OLD structure - can't deprecate a typedef */
typedef raptor_parser raptor_ntriples_parser;

typedef enum {
  RAPTOR_IDENTIFIER_TYPE_UNKNOWN,             /* Unknown type - illegal */
  RAPTOR_IDENTIFIER_TYPE_RESOURCE,            /* Resource URI (e.g. rdf:about) */
  RAPTOR_IDENTIFIER_TYPE_ANONYMOUS,           /* _:foo N-Triples, or generated */
  RAPTOR_IDENTIFIER_TYPE_PREDICATE,           /* Predicate URI */
  RAPTOR_IDENTIFIER_TYPE_ORDINAL,             /* rdf:li, rdf:_<n> etc. */
  RAPTOR_IDENTIFIER_TYPE_LITERAL,             /* regular literal */
  RAPTOR_IDENTIFIER_TYPE_XML_LITERAL          /* rdf:parseType="Literal" */
} raptor_identifier_type;

typedef enum { RAPTOR_URI_SOURCE_UNKNOWN, RAPTOR_URI_SOURCE_NOT_URI, RAPTOR_URI_SOURCE_ELEMENT, RAPTOR_URI_SOURCE_ATTRIBUTE, RAPTOR_URI_SOURCE_ID, RAPTOR_URI_SOURCE_URI, RAPTOR_URI_SOURCE_GENERATED, RAPTOR_URI_SOURCE_BLANK_ID } raptor_uri_source;

typedef enum { RAPTOR_NTRIPLES_TERM_TYPE_URI_REF, RAPTOR_NTRIPLES_TERM_TYPE_BLANK_NODE, RAPTOR_NTRIPLES_TERM_TYPE_LITERAL } raptor_ntriples_term_type;


typedef struct {
  raptor_uri *uri;
  const char *file;
  int line;
  int column;
  int byte;  
} raptor_locator;


typedef enum {
  RAPTOR_FEATURE_SCANNING,
  RAPTOR_FEATURE_ASSUME_IS_RDF,
  RAPTOR_FEATURE_ALLOW_NON_NS_ATTRIBUTES,
  RAPTOR_FEATURE_ALLOW_OTHER_PARSETYPES,
  RAPTOR_FEATURE_ALLOW_BAGID,
  RAPTOR_FEATURE_ALLOW_RDF_TYPE_RDF_LIST,
  RAPTOR_FEATURE_NORMALIZE_LANGUAGE,
  RAPTOR_FEATURE_NON_NFC_FATAL,
  RAPTOR_FEATURE_WARN_OTHER_PARSETYPES,
  RAPTOR_FEATURE_CHECK_RDF_ID,
  RAPTOR_FEATURE_RELATIVE_URIS,
  RAPTOR_FEATURE_START_URI,
  RAPTOR_FEATURE_WRITER_AUTO_INDENT,
  RAPTOR_FEATURE_WRITER_AUTO_EMPTY,
  RAPTOR_FEATURE_WRITER_INDENT_WIDTH,
  RAPTOR_FEATURE_LAST=RAPTOR_FEATURE_WRITER_INDENT_WIDTH
} raptor_feature;


typedef enum {
  RAPTOR_GENID_TYPE_BNODEID,
  RAPTOR_GENID_TYPE_BAGID
} raptor_genid_type;


typedef struct {
  raptor_identifier_type type;
  raptor_uri *uri;
  raptor_uri_source uri_source;
  const unsigned char *id;
  int ordinal;
  int is_malloced;
  const unsigned char *literal;
  raptor_uri *literal_datatype;
  const unsigned char *literal_language;
} raptor_identifier;


/* Returned by statement_handler */
typedef struct {
  const void *subject;
  raptor_identifier_type subject_type;
  const void *predicate;
  raptor_identifier_type predicate_type;
  const void *object;
  raptor_identifier_type object_type;
  raptor_uri *object_literal_datatype;
  const unsigned char *object_literal_language;
} raptor_statement;


typedef raptor_uri* (*raptor_new_uri_func) (void *context, const unsigned char *uri_string);
typedef raptor_uri* (*raptor_new_uri_from_uri_local_name_func) (void *context, raptor_uri *uri, const unsigned char *local_name);
typedef raptor_uri* (*raptor_new_uri_relative_to_base_func) (void *context, raptor_uri *base_uri, const unsigned char *uri_string);
typedef raptor_uri* (*raptor_new_uri_for_rdf_concept_func) (void *context, const char *name);
typedef void (*raptor_free_uri_func) (void *context, raptor_uri *uri);
typedef int (*raptor_uri_equals_func) (void *context, raptor_uri* uri1, raptor_uri* uri2);
typedef raptor_uri* (*raptor_uri_copy_func) (void *context, raptor_uri *uri);
typedef unsigned char* (*raptor_uri_as_string_func)(void *context, raptor_uri *uri);
typedef unsigned char* (*raptor_uri_as_counted_string_func)(void *context, raptor_uri *uri, size_t* len_p);

typedef struct {
  /* constructors */
  raptor_new_uri_func                     new_uri;
  raptor_new_uri_from_uri_local_name_func new_uri_from_uri_local_name;
  raptor_new_uri_relative_to_base_func    new_uri_relative_to_base;
  raptor_new_uri_for_rdf_concept_func     new_uri_for_rdf_concept;
  /* destructor */
  raptor_free_uri_func                    free_uri;
  /* methods */
  raptor_uri_equals_func                  uri_equals;
  raptor_uri_copy_func                    uri_copy; /* well, copy constructor */
  raptor_uri_as_string_func               uri_as_string;
  raptor_uri_as_counted_string_func       uri_as_counted_string;
  int initialised;
} raptor_uri_handler;


typedef void (*raptor_simple_message_handler)(void *user_data, const char *message, ...);
typedef void (*raptor_message_handler)(void *user_data, raptor_locator* locator, const char *message);
typedef void (*raptor_statement_handler)(void *user_data, const raptor_statement *statement);
typedef unsigned char* (*raptor_generate_id_handler)(void *user_data, raptor_genid_type type, unsigned char* user_bnodeid);
typedef raptor_uri* (*raptor_container_test_handler)(raptor_uri *element_uri);
typedef void (*raptor_www_write_bytes_handler)(raptor_www* www, void *userdata, const void *ptr, size_t size, size_t nmemb);
typedef void (*raptor_www_content_type_handler)(raptor_www* www, void *userdata, const char *content_type);


/* Public functions */

RAPTOR_API void raptor_init(void);
RAPTOR_API void raptor_finish(void);

/* Get parser names */
RAPTOR_API int raptor_parsers_enumerate(const unsigned int counter, const char **name, const char **label);
RAPTOR_API int raptor_syntaxes_enumerate(const unsigned int counter, const char **name, const char **label, const char **mime_type, const unsigned char **uri_string);
RAPTOR_API int raptor_syntax_name_check(const char *name);
RAPTOR_API const char* raptor_guess_parser_name(raptor_uri *uri, const char *mime_type, const unsigned char *buffer, size_t len, const unsigned char *identifier);

/* Create */
RAPTOR_API raptor_parser* raptor_new_parser(const char *name);
RAPTOR_API 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);

RAPTOR_API int raptor_start_parse(raptor_parser *rdf_parser, raptor_uri *uri);

/* Destroy */
RAPTOR_API void raptor_free_parser(raptor_parser* parser);

/* Handlers */
RAPTOR_API void raptor_set_fatal_error_handler(raptor_parser* parser, void *user_data, raptor_message_handler handler);
RAPTOR_API void raptor_set_error_handler(raptor_parser* parser, void *user_data, raptor_message_handler handler);
RAPTOR_API void raptor_set_warning_handler(raptor_parser* parser, void *user_data, raptor_message_handler handler);
RAPTOR_API void raptor_set_statement_handler(raptor_parser* parser, void *user_data, raptor_statement_handler handler);
RAPTOR_API void raptor_set_generate_id_handler(raptor_parser* parser, void *user_data, raptor_generate_id_handler handler);

RAPTOR_API void raptor_print_statement(const raptor_statement * statement, FILE *stream);
RAPTOR_API void raptor_print_statement_as_ntriples(const raptor_statement * statement, FILE *stream);
RAPTOR_API RAPTOR_DEPRECATED void raptor_print_statement_detailed(const raptor_statement * statement, int detailed, FILE *stream);
RAPTOR_API unsigned char* raptor_statement_part_as_counted_string(const void *term, raptor_identifier_type type, raptor_uri* literal_datatype, const unsigned char *literal_language, size_t* len_p);
RAPTOR_API unsigned char* raptor_statement_part_as_string(const void *term, raptor_identifier_type type, raptor_uri* literal_datatype, const unsigned char *literal_language);  

RAPTOR_API raptor_locator* raptor_get_locator(raptor_parser* rdf_parser);

RAPTOR_API void raptor_set_default_generate_id_parameters(raptor_parser* rdf_parser, char *prefix, int base);

/* Parsing functions */
RAPTOR_API int raptor_parse_chunk(raptor_parser* rdf_parser, const unsigned char *buffer, size_t len, int is_end);
RAPTOR_API int raptor_parse_file_stream(raptor_parser* rdf_parser, FILE *stream, const char *filename, raptor_uri *base_uri);
RAPTOR_API int raptor_parse_file(raptor_parser* rdf_parser, raptor_uri *uri, raptor_uri *base_uri);
RAPTOR_API int raptor_parse_uri(raptor_parser* rdf_parser, raptor_uri *uri, raptor_uri *base_uri);
RAPTOR_API int raptor_parse_uri_with_connection(raptor_parser* rdf_parser, raptor_uri *uri, raptor_uri *base_uri, void *connection);
RAPTOR_API void raptor_parse_abort(raptor_parser* rdf_parser);

/* Utility functions */
RAPTOR_API void raptor_print_locator(FILE *stream, raptor_locator* locator);
RAPTOR_API int raptor_format_locator(char *buffer, size_t length, raptor_locator* locator);
RAPTOR_API int raptor_locator_line(raptor_locator *locator);
RAPTOR_API int raptor_locator_column(raptor_locator *locator);
RAPTOR_API int raptor_locator_byte(raptor_locator *locator);
RAPTOR_API const char * raptor_locator_file(raptor_locator *locator);
RAPTOR_API const char * raptor_locator_uri(raptor_locator *locator);


RAPTOR_API const char* raptor_get_name(raptor_parser *rdf_parser);
RAPTOR_API const char* raptor_get_label(raptor_parser *rdf_parser);
RAPTOR_API const char* raptor_get_mime_type(raptor_parser *rdf_parser);

RAPTOR_API int raptor_features_enumerate(const raptor_feature feature, const char **name, raptor_uri **uri, const char **label);
RAPTOR_API int raptor_set_feature(raptor_parser *parser, raptor_feature feature, int value);
RAPTOR_API int raptor_parser_set_feature_string(raptor_parser *parser, raptor_feature feature, const unsigned char *value);
RAPTOR_API int raptor_get_feature(raptor_parser *parser, raptor_feature feature);
RAPTOR_API const unsigned char* raptor_parser_get_feature_string(raptor_parser *parser, raptor_feature feature);
RAPTOR_API void raptor_set_parser_strict(raptor_parser* rdf_parser, int is_strict);

/* Get serializer names */
RAPTOR_API int raptor_serializers_enumerate(const unsigned int counter, const char **name, const char **label, const char **mime_type, const unsigned char **uri_string);
RAPTOR_API int raptor_serializer_syntax_name_check(const char *name);

/* Serializing */
RAPTOR_API raptor_serializer* raptor_new_serializer(const char *name);
RAPTOR_API void raptor_free_serializer(raptor_serializer* rdf_serializer);

RAPTOR_API int raptor_serialize_start(raptor_serializer *rdf_serializer, raptor_uri *uri, raptor_iostream *iostream);
RAPTOR_API int raptor_serialize_start_to_filename(raptor_serializer *rdf_serializer, const char *filename);
RAPTOR_API int raptor_serialize_start_to_string(raptor_serializer *rdf_serializer, raptor_uri *uri, void **string_p, size_t *length_p);
RAPTOR_API int raptor_serialize_start_to_file_handle(raptor_serializer *rdf_serializer, raptor_uri *uri, FILE *fh);
RAPTOR_API int raptor_serialize_set_namespace(raptor_serializer* rdf_serializer, raptor_uri *uri, const unsigned char *prefix);
RAPTOR_API int raptor_serialize_statement(raptor_serializer* rdf_serializer, const raptor_statement *statement);
RAPTOR_API int raptor_serialize_end(raptor_serializer *rdf_serializer);
RAPTOR_API raptor_iostream* raptor_serializer_get_iostream(raptor_serializer *serializer);
RAPTOR_API void raptor_serializer_set_error_handler(raptor_serializer* serializer, void *user_data, raptor_message_handler handler);
RAPTOR_API void raptor_serializer_set_warning_handler(raptor_serializer* serializer, void *user_data, raptor_message_handler handler);
RAPTOR_API raptor_locator* raptor_serializer_get_locator(raptor_serializer *rdf_serializer);
RAPTOR_API int raptor_serializer_features_enumerate(const raptor_feature feature, const char **name,  raptor_uri **uri, const char **label);
RAPTOR_API int raptor_serializer_set_feature(raptor_serializer *serializer, raptor_feature feature, int value);
RAPTOR_API int raptor_serializer_set_feature_string(raptor_serializer *serializer, raptor_feature feature, const unsigned char *value);
RAPTOR_API int raptor_serializer_get_feature(raptor_serializer *serializer, raptor_feature feature);
RAPTOR_API const unsigned char *raptor_serializer_get_feature_string(raptor_serializer *serializer, raptor_feature feature);

/* memory functions */
RAPTOR_API void raptor_free_memory(void *ptr);
RAPTOR_API void* raptor_alloc_memory(size_t size);
RAPTOR_API void* raptor_calloc_memory(size_t nmemb, size_t size);

/* URI functions */
RAPTOR_API raptor_uri* raptor_new_uri(const unsigned char *uri_string);
RAPTOR_API raptor_uri* raptor_new_uri_from_uri_local_name(raptor_uri *uri, const unsigned char *local_name);
RAPTOR_API raptor_uri* raptor_new_uri_relative_to_base(raptor_uri *base_uri, const unsigned char *uri_string);
RAPTOR_API raptor_uri* raptor_new_uri_from_id(raptor_uri *base_uri, const unsigned char *id);
RAPTOR_API raptor_uri* raptor_new_uri_for_rdf_concept(const char *name);
RAPTOR_API void raptor_free_uri(raptor_uri *uri);
RAPTOR_API int raptor_uri_equals(raptor_uri* uri1, raptor_uri* uri2);
RAPTOR_API raptor_uri* raptor_uri_copy(raptor_uri *uri);
RAPTOR_API unsigned char* raptor_uri_as_string(raptor_uri *uri);
RAPTOR_API unsigned char* raptor_uri_as_counted_string(raptor_uri *uri, size_t* len_p);

/* Make an xml:base-compatible URI from an existing one */
RAPTOR_API raptor_uri* raptor_new_uri_for_xmlbase(raptor_uri* old_uri);
/* Make a URI suitable for retrieval (no fragment, has path) from an existing one */
RAPTOR_API raptor_uri* raptor_new_uri_for_retrieval(raptor_uri* old_uri);

/* Identifier functions */
RAPTOR_API raptor_identifier* raptor_new_identifier(raptor_identifier_type type, raptor_uri *uri, raptor_uri_source uri_source, const unsigned char *id, const unsigned char *literal, raptor_uri *literal_datatype, const unsigned char *literal_language);
RAPTOR_API int raptor_copy_identifier(raptor_identifier *dest, raptor_identifier *src);
RAPTOR_API void raptor_free_identifier(raptor_identifier *identifier);

/* Utility functions */
RAPTOR_API int raptor_print_ntriples_string(FILE *stream, const unsigned char *string, const char delim);
RAPTOR_API RAPTOR_DEPRECATED unsigned char* raptor_ntriples_string_as_utf8_string(raptor_parser* rdf_parser, const unsigned char *src, int len, size_t *dest_lenp);
RAPTOR_API RAPTOR_DEPRECATED const char* raptor_ntriples_term_as_string(raptor_ntriples_term_type term);
RAPTOR_API int raptor_iostream_write_string_ntriples(raptor_iostream *iostr, const unsigned char *string, size_t len, const char delim);
RAPTOR_API void raptor_iostream_write_statement_ntriples(raptor_iostream* iostr, const raptor_statement *statement);
RAPTOR_API int raptor_xml_escape_string(const unsigned char *string, size_t len, unsigned char *buffer, size_t length, char quote, raptor_simple_message_handler error_handler, void *error_data);
RAPTOR_API int raptor_iostream_write_xml_escaped_string(raptor_iostream* iostr, const unsigned char *string, size_t len, char quote, raptor_simple_message_handler error_handler, void *error_data);

RAPTOR_API char* raptor_vsnprintf(const char *message, va_list arguments);

RAPTOR_API int raptor_xml_name_check(const unsigned char *string, size_t length, int xml_version);

/* raptor_rfc2396.c */
RAPTOR_API void raptor_uri_resolve_uri_reference (const unsigned char *base_uri, const unsigned char *reference_uri, char unsigned *buffer, size_t length);

/* raptor_uri.c */
RAPTOR_API unsigned char *raptor_uri_filename_to_uri_string(const char *filename);
RAPTOR_API char *raptor_uri_uri_string_to_filename(const unsigned char *uri_string);
RAPTOR_API char *raptor_uri_uri_string_to_filename_fragment(const unsigned char *uri_string, unsigned char **fragment_p);
RAPTOR_API int raptor_uri_is_file_uri(const unsigned char* uri_string);
RAPTOR_API unsigned char* raptor_uri_to_relative_counted_uri_string(raptor_uri *base_uri, raptor_uri *reference_uri, size_t *length_p);
RAPTOR_API unsigned char* raptor_uri_to_relative_uri_string(raptor_uri *base_uri,  raptor_uri *reference_uri);
RAPTOR_API void raptor_uri_print(const raptor_uri* uri, FILE *stream);
RAPTOR_API unsigned char* raptor_uri_to_counted_string(raptor_uri *uri, size_t *len_p);
RAPTOR_API unsigned char* raptor_uri_to_string(raptor_uri *uri);

RAPTOR_API void raptor_uri_init(void);

RAPTOR_API void raptor_uri_set_handler(raptor_uri_handler *handler, void *context);
RAPTOR_API void raptor_uri_get_handler(raptor_uri_handler **handler, void **context);

#define RAPTOR_RDF_MS_URI raptor_rdf_namespace_uri
#define RAPTOR_RDF_SCHEMA_URI raptor_rdf_schema_namespace_uri

#define RAPTOR_XMLSCHEMA_DATATYPES_URI raptor_xmlschema_datatypes_namespace_uri
#define RAPTOR_OWL_URI raptor_owl_namespace_uri


/* raptor_www */
RAPTOR_API void raptor_www_init(void);
RAPTOR_API void raptor_www_finish(void);

RAPTOR_API void raptor_www_no_www_library_init_finish(void);

RAPTOR_API raptor_www *raptor_www_new(void);
RAPTOR_API raptor_www *raptor_www_new_with_connection(void* connection);
RAPTOR_API void raptor_www_free(raptor_www *www);
RAPTOR_API void raptor_www_set_user_agent(raptor_www *www, const char *user_agent);
RAPTOR_API void raptor_www_set_proxy(raptor_www *www, const char *proxy);
RAPTOR_API void raptor_www_set_http_accept(raptor_www *www, const char *value);
RAPTOR_API void raptor_www_set_write_bytes_handler(raptor_www *www, raptor_www_write_bytes_handler handler, void *user_data);
RAPTOR_API void raptor_www_set_content_type_handler(raptor_www *www, raptor_www_content_type_handler handler, void *user_data);
RAPTOR_API void raptor_www_set_error_handler(raptor_www *www, raptor_message_handler error_handler, void *error_data);
RAPTOR_API int raptor_www_fetch(raptor_www *www, raptor_uri *uri);
RAPTOR_API 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));
RAPTOR_API void* raptor_www_get_connection(raptor_www *www);
RAPTOR_API void raptor_www_abort(raptor_www *www, const char *reason);


/* raptor_qname - XML qnames */
RAPTOR_API raptor_qname* raptor_new_qname(raptor_namespace_stack *nstack, const unsigned char *name, const unsigned char *value, raptor_simple_message_handler error_handler, void *error_data);
RAPTOR_API raptor_qname* raptor_new_qname_from_namespace_local_name(raptor_namespace *ns, const unsigned char *local_name, const unsigned char *value);
RAPTOR_API raptor_qname* raptor_qname_copy(raptor_qname *qname);
RAPTOR_API void raptor_free_qname(raptor_qname* name);
RAPTOR_API int raptor_qname_equal(raptor_qname *name1, raptor_qname *name2);
/* utility function */
RAPTOR_API raptor_uri* raptor_qname_string_to_uri(raptor_namespace_stack *nstack,  const unsigned char *name, size_t name_len, raptor_simple_message_handler error_handler, void *error_data);
RAPTOR_API int raptor_iostream_write_qname(raptor_iostream* iostr, raptor_qname *qname);

/* raptor_namespace_stack - stack of XML namespaces */
RAPTOR_API raptor_namespace* raptor_new_namespace_from_uri(raptor_namespace_stack *nstack, const unsigned char *prefix,  raptor_uri* ns_uri, int depth);
RAPTOR_API 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);

RAPTOR_API void raptor_namespaces_init(raptor_namespace_stack *nstack, raptor_uri_handler *handler, void *context, raptor_simple_message_handler error_handler, void *error_data, int defaults);
RAPTOR_API void raptor_namespaces_clear(raptor_namespace_stack *nstack);
RAPTOR_API void raptor_free_namespaces(raptor_namespace_stack *nstack);
RAPTOR_API void raptor_namespaces_start_namespace(raptor_namespace_stack *nstack, raptor_namespace *nspace);
RAPTOR_API int raptor_namespaces_start_namespace_full(raptor_namespace_stack *nstack, const unsigned char *prefix, const unsigned char *nspace, int depth);
RAPTOR_API void raptor_namespaces_end_for_depth(raptor_namespace_stack *nstack, int depth);
RAPTOR_API raptor_namespace* raptor_namespaces_get_default_namespace(raptor_namespace_stack *nstack);
RAPTOR_API raptor_namespace *raptor_namespaces_find_namespace(raptor_namespace_stack *nstack, const unsigned char *prefix, int prefix_length);
RAPTOR_API raptor_namespace* raptor_namespaces_find_namespace_by_uri(raptor_namespace_stack *nstack, raptor_uri *ns_uri);
RAPTOR_API int raptor_namespaces_namespace_in_scope(raptor_namespace_stack *nstack, const raptor_namespace *nspace);

/* raptor_namespace - XML namespace */
RAPTOR_API raptor_namespace* raptor_new_namespace(raptor_namespace_stack *nstack, const unsigned char *prefix, const unsigned char *ns_uri_string, int depth);
RAPTOR_API void raptor_free_namespace(raptor_namespace *ns);
RAPTOR_API int raptor_namespace_copy(raptor_namespace_stack *nstack, raptor_namespace *ns, int new_depth);
RAPTOR_API raptor_uri* raptor_namespace_get_uri(const raptor_namespace *ns);
RAPTOR_API const unsigned char* raptor_namespace_get_prefix(const raptor_namespace *ns);
RAPTOR_API unsigned char *raptor_namespaces_format(const raptor_namespace *ns, size_t *length_p);
RAPTOR_API int raptor_iostream_write_namespace(raptor_iostream* iostr, raptor_namespace *ns);
RAPTOR_API int raptor_new_namespace_parts_from_string(const unsigned char *string, unsigned char **prefix, unsigned char **uri_string);

typedef struct raptor_stringbuffer_s raptor_stringbuffer;

/* Sequence class */
typedef struct raptor_sequence_s raptor_sequence;
typedef void (raptor_sequence_free_handler(void*));
typedef void (raptor_sequence_print_handler(void *object, FILE *fh));

/* Create */
RAPTOR_API raptor_sequence* raptor_new_sequence(raptor_sequence_free_handler* free_handler, raptor_sequence_print_handler* print_handler);
/* Destroy */
RAPTOR_API void raptor_free_sequence(raptor_sequence* seq);
/* Methods */
RAPTOR_API int raptor_sequence_size(raptor_sequence* seq);
RAPTOR_API int raptor_sequence_set_at(raptor_sequence* seq, int idx, void *data);
RAPTOR_API int raptor_sequence_push(raptor_sequence* seq, void *data);
RAPTOR_API int raptor_sequence_shift(raptor_sequence* seq, void *data);
RAPTOR_API void* raptor_sequence_get_at(raptor_sequence* seq, int idx);
RAPTOR_API void* raptor_sequence_pop(raptor_sequence* seq);
RAPTOR_API void* raptor_sequence_unshift(raptor_sequence* seq);

RAPTOR_API int raptor_compare_strings(const void *a, const void *b);

RAPTOR_API void raptor_sequence_sort(raptor_sequence* seq, int(*compare)(const void *, const void *));

/* helper for printing sequences of strings */ 
RAPTOR_API void raptor_sequence_print_string(char *data, FILE *fh);
RAPTOR_API void raptor_sequence_print_uri(char *data, FILE *fh);
RAPTOR_API void raptor_sequence_set_print_handler(raptor_sequence *seq, raptor_sequence_print_handler *print_handler);
RAPTOR_API void raptor_sequence_print(raptor_sequence* seq, FILE* fh);
RAPTOR_API int raptor_sequence_join(raptor_sequence* dest, raptor_sequence *src);

/* Unicode and UTF8 */
RAPTOR_API int raptor_unicode_char_to_utf8(unsigned long c, unsigned char *output);
RAPTOR_API int raptor_utf8_to_unicode_char(unsigned long *output, const unsigned char *input, int length);
RAPTOR_API int raptor_unicode_is_xml11_namestartchar(long c);
RAPTOR_API int raptor_unicode_is_xml10_namestartchar(long c);
RAPTOR_API int raptor_unicode_is_xml11_namechar(long c);
RAPTOR_API int raptor_unicode_is_xml10_namechar(long c);
RAPTOR_API int raptor_utf8_check(const unsigned char *string, size_t length);

/* raptor_stringbuffer */
RAPTOR_API raptor_stringbuffer* raptor_new_stringbuffer(void);
RAPTOR_API void raptor_free_stringbuffer(raptor_stringbuffer *stringbuffer);
RAPTOR_API int raptor_stringbuffer_append_counted_string(raptor_stringbuffer* stringbuffer, const unsigned char *string, size_t length, int do_copy);
RAPTOR_API int raptor_stringbuffer_append_string(raptor_stringbuffer* stringbuffer, const unsigned char *string, int do_copy);
RAPTOR_API int raptor_stringbuffer_append_decimal(raptor_stringbuffer* stringbuffer, int integer);
RAPTOR_API int raptor_stringbuffer_append_stringbuffer(raptor_stringbuffer* stringbuffer, raptor_stringbuffer* append);
RAPTOR_API int raptor_stringbuffer_prepend_counted_string(raptor_stringbuffer* stringbuffer, const unsigned char *string, size_t length, int do_copy);
RAPTOR_API int raptor_stringbuffer_prepend_string(raptor_stringbuffer* stringbuffer, const unsigned char *string, int do_copy);
RAPTOR_API unsigned char * raptor_stringbuffer_as_string(raptor_stringbuffer* stringbuffer);
RAPTOR_API size_t raptor_stringbuffer_length(raptor_stringbuffer* stringbuffer);
RAPTOR_API int raptor_stringbuffer_copy_to_string(raptor_stringbuffer* stringbuffer, unsigned char *string, size_t length);

typedef int (*raptor_iostream_init_func) (void *context);
typedef void (*raptor_iostream_finish_func) (void *context);
typedef int (*raptor_iostream_write_byte_func) (void *context, const int byte);
typedef int (*raptor_iostream_write_bytes_func) (void *context, const void *ptr, size_t size, size_t nmemb);
typedef void (*raptor_iostream_write_end_func) (void *context);

typedef struct {
  /* optional, called at most once */
  raptor_iostream_init_func         init;
  /* optional, called at most once */
  raptor_iostream_finish_func       finish;
  /* methods */
  raptor_iostream_write_byte_func   write_byte;
  raptor_iostream_write_bytes_func  write_bytes;
   /* optional, called at most once */
  raptor_iostream_write_end_func    write_end;
} raptor_iostream_handler;


RAPTOR_API raptor_iostream* raptor_new_iostream_from_handler(void *context, raptor_iostream_handler *handler);
RAPTOR_API raptor_iostream* raptor_new_iostream_to_sink(void);
RAPTOR_API raptor_iostream* raptor_new_iostream_to_filename(const char *filename);
RAPTOR_API raptor_iostream* raptor_new_iostream_to_file_handle(FILE *handle);
RAPTOR_API raptor_iostream* raptor_new_iostream_to_string(void **string_p, size_t *length_p, void *(*malloc_handler)(size_t size));
RAPTOR_API void raptor_free_iostream(raptor_iostream *iostr);
RAPTOR_API int raptor_iostream_write_bytes(raptor_iostream *iostr, const void *ptr, size_t size, size_t nmemb);
RAPTOR_API int raptor_iostream_write_byte(raptor_iostream *iostr, const int byte);
RAPTOR_API void raptor_iostream_write_end(raptor_iostream *iostr);
RAPTOR_API int raptor_iostream_write_string(raptor_iostream *iostr, const void *string);
RAPTOR_API int raptor_iostream_write_counted_string(raptor_iostream *iostr, const void *string, size_t len);
RAPTOR_API size_t raptor_iostream_get_bytes_written_count(raptor_iostream *iostr);
RAPTOR_API int raptor_iostream_write_decimal(raptor_iostream* iostr, int integer);
RAPTOR_API int raptor_iostream_format_hexadecimal(raptor_iostream* iostr, unsigned int integer, int width);
RAPTOR_API int raptor_iostream_write_stringbuffer(raptor_iostream* iostr, raptor_stringbuffer *sb);

/* Parser and Serializer features */
RAPTOR_API raptor_feature raptor_feature_from_uri(raptor_uri *uri);
RAPTOR_API int raptor_feature_value_type(const raptor_feature feature);

/* SAX2 element Class (raptor_xml_element) */
RAPTOR_API raptor_xml_element* raptor_new_xml_element(raptor_qname* name, const unsigned char* xml_language, raptor_uri* xml_base);
RAPTOR_API void raptor_free_xml_element(raptor_xml_element *element);
RAPTOR_API raptor_qname* raptor_xml_element_get_name(raptor_xml_element *xml_element);
RAPTOR_API void raptor_xml_element_set_attributes(raptor_xml_element* xml_element, raptor_qname **attributes, int count);
RAPTOR_API void raptor_xml_element_declare_namespace(raptor_xml_element* xml_element, raptor_namespace *nspace);
RAPTOR_API int raptor_iostream_write_xml_element(raptor_iostream *iostr, raptor_xml_element *element, raptor_namespace_stack *nstack, int is_empty, int is_end, raptor_simple_message_handler error_handler, void *error_data, int depth);

/* XML Writer Class (raptor_xml_writer) */
RAPTOR_API raptor_xml_writer* raptor_new_xml_writer(raptor_namespace_stack *nstack, raptor_uri_handler *uri_handler, void *uri_context, raptor_iostream* iostr, raptor_simple_message_handler error_handler, void *error_data, int canonicalize);
RAPTOR_API void raptor_free_xml_writer(raptor_xml_writer* xml_writer);
RAPTOR_API void raptor_xml_writer_empty_element(raptor_xml_writer* xml_writer, raptor_xml_element *element);
RAPTOR_API void raptor_xml_writer_start_element(raptor_xml_writer* xml_writer, raptor_xml_element *element);
RAPTOR_API void raptor_xml_writer_end_element(raptor_xml_writer* xml_writer, raptor_xml_element *element);
RAPTOR_API void raptor_xml_writer_cdata(raptor_xml_writer* xml_writer, const unsigned char *str);
RAPTOR_API void raptor_xml_writer_cdata_counted(raptor_xml_writer* xml_writer, const unsigned char *str, unsigned int length);
RAPTOR_API void raptor_xml_writer_raw(raptor_xml_writer* xml_writer, const unsigned char *str);
RAPTOR_API void raptor_xml_writer_raw_counted(raptor_xml_writer* xml_writer, const unsigned char *str, unsigned int length);
RAPTOR_API void raptor_xml_writer_comment(raptor_xml_writer* xml_writer, const unsigned char *str);
RAPTOR_API void raptor_xml_writer_comment_counted(raptor_xml_writer* xml_writer, const unsigned char *str, unsigned int length);
RAPTOR_API int raptor_xml_writer_features_enumerate(const raptor_feature feature, const char **name,  raptor_uri **uri, const char **label);
RAPTOR_API int raptor_xml_writer_set_feature(raptor_xml_writer *xml_writer, raptor_feature feature, int value);
RAPTOR_API int raptor_xml_writer_set_feature_string(raptor_xml_writer *xml_writer, raptor_feature feature, const unsigned char *value);
RAPTOR_API int raptor_xml_writer_get_feature(raptor_xml_writer *xml_writer, raptor_feature feature);
RAPTOR_API const unsigned char *raptor_xml_writer_get_feature_string(raptor_xml_writer *xml_writer, raptor_feature feature);

#ifdef __cplusplus
}
#endif

#endif
