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/* $Id:$ */
/*
libg3d - 3D object loading library
Copyright (C) 2005-2009 Markus Dahms <mad@automagically.de>
This library 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 library 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 library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <stdio.h>
#include <glib/gstdio.h>
#include <g3d/stream.h>
typedef struct {
FILE *f;
goffset size;
} G3DStreamFile;
static gsize g3d_stream_file_read(gpointer ptr, gsize size, gpointer data)
{
G3DStreamFile *sf = (G3DStreamFile *)data;
return fread((void *)ptr, 1, size, sf->f);
}
static gchar *g3d_stream_file_read_line(gchar *buf, gsize size, gpointer data)
{
G3DStreamFile *sf = (G3DStreamFile *)data;
return fgets(buf, size, sf->f);
}
static gint g3d_stream_file_seek(gpointer data, goffset offset,
GSeekType whence)
{
G3DStreamFile *sf = (G3DStreamFile *)data;
int w = SEEK_SET;
switch(whence) {
case G_SEEK_SET: w = SEEK_SET; break;
case G_SEEK_CUR: w = SEEK_CUR; break;
case G_SEEK_END: w = SEEK_END; break;
}
return fseek(sf->f, offset, w);
}
static goffset g3d_stream_file_tell(gpointer data)
{
G3DStreamFile *sf = (G3DStreamFile *)data;
return ftell(sf->f);
}
static goffset g3d_stream_file_size(gpointer data)
{
G3DStreamFile *sf = (G3DStreamFile *)data;
return sf->size;
}
static gboolean g3d_stream_file_eof(gpointer data)
{
G3DStreamFile *sf = (G3DStreamFile *)data;
return feof(sf->f);
}
static gint g3d_stream_file_close(gpointer data)
{
G3DStreamFile *sf = (G3DStreamFile *)data;
FILE *f = sf->f;
g_free(sf);
return fclose(f);
}
EAPI
G3DStream *g3d_stream_open_file(const gchar *filename, const gchar *mode)
{
G3DStreamFile *sf;
struct stat stats;
guint32 flags = 0;
sf = g_new0(G3DStreamFile, 1);
/* open file; may be moved to some GLib interface */
sf->f = fopen(filename, mode);
if(sf->f == NULL) {
g_free(sf);
return NULL;
}
/* get file size */
if(g_stat(filename, &stats) != 0)
sf->size = -1;
sf->size = stats.st_size;
if(mode[0] == 'r')
flags |= (1 << G3D_STREAM_READABLE);
if(mode[0] == 'w')
flags |= (1 << G3D_STREAM_WRITABLE);
flags |= (1 << G3D_STREAM_SEEKABLE);
return g3d_stream_new_custom(flags, filename,
g3d_stream_file_read, g3d_stream_file_read_line,
g3d_stream_file_seek, g3d_stream_file_tell,
g3d_stream_file_size, g3d_stream_file_eof,
g3d_stream_file_close, sf, NULL);
}
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