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/* -*- Mode: c; c-basic-offset: 2 -*-
*
* raptor_xml_writer.c - Raptor XML Writer for SAX2 events API
*
* $Id$
*
* Copyright (C) 2003-2004, 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.
*
*
*/
#ifdef HAVE_CONFIG_H
#include <raptor_config.h>
#endif
#ifdef WIN32
#include <win32_raptor_config.h>
#endif
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <stdarg.h>
#ifdef HAVE_ERRNO_H
#include <errno.h>
#endif
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
/* Raptor includes */
#include "raptor.h"
#include "raptor_internal.h"
#define RAPTOR_DEBUG_CDATA 0
struct raptor_xml_writer_s {
int canonicalize;
int depth;
/* namespaces stack when canonicalizing */
raptor_namespace_stack content_cdata_namespaces;
int content_cdata_namespaces_depth;
raptor_uri_handler *uri_handler;
void *uri_context;
raptor_simple_message_handler error_handler;
void *error_data;
raptor_sax2_element* current_element;
raptor_stringbuffer *sb;
};
raptor_xml_writer*
raptor_new_xml_writer(raptor_uri_handler *uri_handler,
void *uri_context,
raptor_simple_message_handler error_handler,
void *error_data,
int canonicalize)
{
raptor_xml_writer* xml_writer;
xml_writer=(raptor_xml_writer*)RAPTOR_CALLOC(raptor_xml_writer, 1, sizeof(raptor_xml_writer)+1);
if(!xml_writer)
return NULL;
/* Initialise to the empty string */
xml_writer->content_cdata_namespaces_depth=0;
xml_writer->uri_handler=uri_handler;
xml_writer->uri_context=uri_context;
xml_writer->error_handler=error_handler;
xml_writer->error_data=error_data;
raptor_namespaces_init(&xml_writer->content_cdata_namespaces,
uri_handler, uri_context,
error_handler, error_data,
0);
xml_writer->sb=raptor_new_stringbuffer();
return xml_writer;
}
/**
* raptor_free_xml_writer: Free XML writer content
* @xml_writer: XML writer object
*
**/
void
raptor_free_xml_writer(raptor_xml_writer* xml_writer)
{
raptor_namespaces_clear(&xml_writer->content_cdata_namespaces);
if(xml_writer->sb)
raptor_free_stringbuffer(xml_writer->sb);
RAPTOR_FREE(raptor_xml_writer, xml_writer);
}
void
raptor_xml_writer_start_element(raptor_xml_writer* xml_writer,
raptor_sax2_element *element)
{
size_t fmt_length;
unsigned char *fmt_buffer=raptor_format_sax2_element(element,
&xml_writer->content_cdata_namespaces,
&fmt_length, 0,
xml_writer->error_handler,
xml_writer->error_data,
xml_writer->depth);
if(fmt_buffer && fmt_length) {
raptor_stringbuffer_append_counted_string(xml_writer->sb, fmt_buffer, fmt_length, 0);
#ifdef RAPTOR_DEBUG_CDATA
RAPTOR_DEBUG2("content cdata appended, now %d bytes\n", (int)raptor_stringbuffer_length(xml_writer->sb));
#endif
}
xml_writer->depth++;
xml_writer->current_element=element;
if(element && element->parent)
element->parent->content_element_seen=1;
}
void
raptor_xml_writer_end_element(raptor_xml_writer* xml_writer,
raptor_sax2_element* element)
{
size_t fmt_length;
unsigned char *fmt_buffer;
fmt_buffer=raptor_format_sax2_element(element,
&xml_writer->content_cdata_namespaces,
&fmt_length, 1,
xml_writer->error_handler,
xml_writer->error_data,
xml_writer->depth);
if(fmt_buffer && fmt_length)
raptor_stringbuffer_append_counted_string(xml_writer->sb, fmt_buffer, fmt_length, 0);
xml_writer->depth--;
raptor_namespaces_end_for_depth(&xml_writer->content_cdata_namespaces,
xml_writer->depth);
#ifdef RAPTOR_DEBUG_CDATA
RAPTOR_DEBUG2("content cdata now %d bytes\n", (int)raptor_stringbuffer_length(xml_writer->sb));
#endif
if(xml_writer->current_element)
xml_writer->current_element = xml_writer->current_element->parent;
}
void
raptor_xml_writer_cdata(raptor_xml_writer* xml_writer,
const unsigned char *s, unsigned int len)
{
size_t buffer_len=raptor_xml_escape_string(s, len,
NULL, 0, '\0',
xml_writer->error_handler,
xml_writer->error_data);
unsigned char *buffer=(unsigned char*)RAPTOR_MALLOC(cstring, buffer_len+1);
if(!buffer)
return;
if(buffer_len != len)
raptor_xml_escape_string(s, len,
buffer, buffer_len, '\0',
xml_writer->error_handler,
xml_writer->error_data);
else {
strncpy((char*)buffer, (const char*)s, buffer_len);
buffer[buffer_len]='\0';
}
raptor_stringbuffer_append_counted_string(xml_writer->sb, buffer, buffer_len, 0);
if(xml_writer->current_element)
xml_writer->current_element->content_cdata_seen=1;
}
void
raptor_xml_writer_comment(raptor_xml_writer* xml_writer,
const unsigned char *s, unsigned int len)
{
raptor_xml_writer_cdata(xml_writer, s, len);
}
unsigned char*
raptor_xml_writer_as_string(raptor_xml_writer* xml_writer,
unsigned int *length_p)
{
if(length_p)
*length_p=raptor_stringbuffer_length(xml_writer->sb);
return raptor_stringbuffer_as_string(xml_writer->sb);
}
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