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/*
* Copyright © 2010 Christian Persch
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of the
* License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include "rsvg-xml.h"
typedef struct {
GInputStream *stream;
GCancellable *cancellable;
GError **error;
} RsvgXmlInputStreamContext;
/* this should use gsize, but libxml2 is borked */
static int
context_read (RsvgXmlInputStreamContext *context,
char *buffer,
int len)
{
gssize n_read;
if (*(context->error))
return -1;
n_read = g_input_stream_read (context->stream, buffer, (gsize) len,
context->cancellable,
context->error);
if (n_read < 0)
return -1;
return (int) n_read;
}
static int
context_close (RsvgXmlInputStreamContext *context)
{
gboolean ret;
/* Don't overwrite a previous error */
ret = g_input_stream_close (context->stream, context->cancellable,
*(context->error) == NULL ? context->error : NULL);
g_object_unref (context->stream);
if (context->cancellable)
g_object_unref (context->cancellable);
g_slice_free (RsvgXmlInputStreamContext, context);
return ret ? 0 : -1;
}
/**
* _rsvg_xml_input_buffer_new_from_stream:
* @context: a #xmlParserCtxtPtr
* @input_stream: a #GInputStream
*
* Returns: a new #xmlParserInputPtr wrapping @input_stream
*/
xmlParserInputBufferPtr
_rsvg_xml_input_buffer_new_from_stream (GInputStream *stream,
GCancellable *cancellable,
xmlCharEncoding enc,
GError **error)
{
RsvgXmlInputStreamContext *context;
g_return_val_if_fail (G_IS_INPUT_STREAM (stream), NULL);
g_return_val_if_fail (cancellable == NULL || G_IS_CANCELLABLE (cancellable), NULL);
g_return_val_if_fail (error != NULL, NULL);
context = g_slice_new (RsvgXmlInputStreamContext);
context->stream = g_object_ref (stream);
context->cancellable = cancellable ? g_object_ref (cancellable) : NULL;
context->error = error;
return xmlParserInputBufferCreateIO ((xmlInputReadCallback) context_read,
(xmlInputCloseCallback) context_close,
context,
enc);
}
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