mirror of
https://github.com/cookiengineer/audacity
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191 lines
5.9 KiB
C
191 lines
5.9 KiB
C
/* -*- Mode: c; c-basic-offset: 2 -*-
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*
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* rdf_node.h - RDF Node definition
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*
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* Copyright (C) 2000-2008, David Beckett http://www.dajobe.org/
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* Copyright (C) 2000-2004, University of Bristol, UK http://www.bristol.ac.uk/
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*
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* This package is Free Software and part of Redland http://librdf.org/
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*
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* It is licensed under the following three licenses as alternatives:
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* 1. GNU Lesser General Public License (LGPL) V2.1 or any newer version
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* 2. GNU General Public License (GPL) V2 or any newer version
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* 3. Apache License, V2.0 or any newer version
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*
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* You may not use this file except in compliance with at least one of
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* the above three licenses.
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*
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* See LICENSE.html or LICENSE.txt at the top of this package for the
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* complete terms and further detail along with the license texts for
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* the licenses in COPYING.LIB, COPYING and LICENSE-2.0.txt respectively.
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*
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*
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*/
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#ifndef LIBRDF_NODE_H
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#define LIBRDF_NODE_H
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#ifndef LIBRDF_OBJC_FRAMEWORK
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#include <rdf_uri.h>
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#else
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#include <Redland/rdf_uri.h>
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Node types */
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/* DEPENDENCY: If this list is changed, the librdf_node_type_names
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* definition in rdf_node.c must be updated to match
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*
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* Node type 3 is unused and should not be renumbered to keep binary
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* ABI compatibility.
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*/
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/**
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* librdf_node_type:
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* @LIBRDF_NODE_TYPE_UNKNOWN: Internal
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* @LIBRDF_NODE_TYPE_RESOURCE: rdf:Resource (& rdf:Property) - has a URI
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* @LIBRDF_NODE_TYPE_LITERAL: rdf:Literal - has an XML string, language,
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* XML space
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* @LIBRDF_NODE_TYPE_BLANK: blank node has an identifier string.
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* @LIBRDF_NODE_TYPE_LAST: Internal
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*
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* Type of a redland node.
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*
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* Better to check this with functions librdf_node_is_resource(),
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* librdf_node_is_literal() or librdf_node_is_blank().
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*
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*/
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typedef enum {
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LIBRDF_NODE_TYPE_UNKNOWN = 0, /* To catch uninitialised nodes */
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LIBRDF_NODE_TYPE_RESOURCE = 1, /* rdf:Resource (& rdf:Property) - has a URI */
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LIBRDF_NODE_TYPE_LITERAL = 2, /* rdf:Literal - has an XML string, language, XML space */
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/* node type 3 is unused at present. Do not renumber this list. */
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LIBRDF_NODE_TYPE_BLANK = 4, /* blank node has an identifier string */
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LIBRDF_NODE_TYPE_LAST = LIBRDF_NODE_TYPE_BLANK
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} librdf_node_type;
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#ifdef LIBRDF_INTERNAL
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#include <rdf_node_internal.h>
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#endif
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/* Create a new Node. */
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REDLAND_API
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librdf_node* librdf_new_node(librdf_world* world);
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/* Create a new resource Node from URI string. */
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REDLAND_API
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librdf_node* librdf_new_node_from_uri_string(librdf_world* world, const unsigned char *uri_string);
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/* Create a new resource Node from URI object. */
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REDLAND_API
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librdf_node* librdf_new_node_from_uri(librdf_world* world, librdf_uri *uri);
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/* Create a new resource Node from URI object with a local_name */
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REDLAND_API
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librdf_node* librdf_new_node_from_uri_local_name(librdf_world* world, librdf_uri *uri, const unsigned char *local_name);
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/* Create a new resource Node from URI string renormalised to a new base */
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REDLAND_API
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librdf_node* librdf_new_node_from_normalised_uri_string(librdf_world* world, const unsigned char *uri_string, librdf_uri *source_uri, librdf_uri *base_uri);
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/* Create a new Node from literal string / language. */
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REDLAND_API
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librdf_node* librdf_new_node_from_literal(librdf_world* world, const unsigned char *string, const char *xml_language, int is_wf_xml);
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/* Create a new Node from a typed literal string / language. */
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REDLAND_API
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librdf_node* librdf_new_node_from_typed_literal(librdf_world *world, const unsigned char *value, const char *xml_language, librdf_uri* datatype_uri);
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REDLAND_API
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librdf_node* librdf_new_node_from_typed_counted_literal(librdf_world *world, const unsigned char *value, size_t value_len, const char *xml_language, size_t xml_language_len, librdf_uri* datatype_uri);
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/* Create a new Node from blank node identifier. */
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REDLAND_API
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librdf_node* librdf_new_node_from_blank_identifier(librdf_world* world, const unsigned char *identifier);
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/* Create a new Node from an existing Node - CLONE */
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REDLAND_API
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librdf_node* librdf_new_node_from_node(librdf_node *node);
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/* destructor */
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REDLAND_API
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void librdf_free_node(librdf_node* node);
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/* functions / methods */
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REDLAND_API
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librdf_uri* librdf_node_get_uri(librdf_node* node);
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REDLAND_API
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librdf_node_type librdf_node_get_type(librdf_node* node);
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REDLAND_API
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unsigned char* librdf_node_get_literal_value(librdf_node* node);
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REDLAND_API
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unsigned char* librdf_node_get_literal_value_as_counted_string(librdf_node* node, size_t* len_p);
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REDLAND_API
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char* librdf_node_get_literal_value_as_latin1(librdf_node* node);
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REDLAND_API
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char* librdf_node_get_literal_value_language(librdf_node* node);
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REDLAND_API
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int librdf_node_get_literal_value_is_wf_xml(librdf_node* node);
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REDLAND_API
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librdf_uri* librdf_node_get_literal_value_datatype_uri(librdf_node* node);
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REDLAND_API
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int librdf_node_get_li_ordinal(librdf_node* node);
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REDLAND_API
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unsigned char *librdf_node_get_blank_identifier(librdf_node* node);
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REDLAND_API
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int librdf_node_is_resource(librdf_node* node);
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REDLAND_API
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int librdf_node_is_literal(librdf_node* node);
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REDLAND_API
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int librdf_node_is_blank(librdf_node* node);
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/* serialise / deserialise */
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REDLAND_API
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size_t librdf_node_encode(librdf_node* node, unsigned char *buffer, size_t length);
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REDLAND_API
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librdf_node* librdf_node_decode(librdf_world *world, size_t* size_p, unsigned char *buffer, size_t length);
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/* convert to a string */
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REDLAND_API
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unsigned char *librdf_node_to_string(librdf_node* node);
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REDLAND_API
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unsigned char* librdf_node_to_counted_string(librdf_node* node, size_t* len_p);
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/* pretty print it */
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REDLAND_API
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void librdf_node_print(librdf_node* node, FILE *fh);
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/* utility functions */
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REDLAND_API
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int librdf_node_equals(librdf_node* first_node, librdf_node* second_node);
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/* create an iterator for a static array of nodes */
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REDLAND_API
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librdf_iterator* librdf_node_static_iterator_create(librdf_node** nodes, int size);
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#ifdef __cplusplus
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}
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#endif
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#endif
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