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/* Dia -- an diagram creation/manipulation program
* Copyright (C) 1998, 1999 Alexander Larsson
*
* Custom Objects -- objects defined in XML rather than C.
* Copyright (C) 1999 James Henstridge.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 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 General Public License for more details.
*
* You should have received a copy of the GNU 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 <stdlib.h>
#include <string.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <sys/types.h>
#include <sys/stat.h>
#include <glib.h>
#include "sheet.h"
#include "shape_info.h"
#include "dia_dirs.h"
#include "intl.h"
#include "plug-ins.h"
void custom_object_new (ShapeInfo *info,
DiaObjectType **otype);
G_MODULE_EXPORT gboolean custom_object_load(gchar *filename,
DiaObjectType **otype);
/* Cannot be static, because we may use this fn later when loading
a new shape via the sheets dialog */
G_MODULE_EXPORT gboolean
custom_object_load(gchar *filename, DiaObjectType **otype)
{
ShapeInfo *info;
if (!filename)
return FALSE;
info = shape_info_load(filename);
/*g_assert(info);*/
if (!info) {
*otype = NULL;
return FALSE;
}
custom_object_new(info, otype);
return TRUE;
}
static gboolean
custom_object_preload(gchar *filename, DiaObjectType **otype)
{
ShapeInfo *info;
info = g_new0 (ShapeInfo, 1);
info->filename = g_strdup (filename);
/* Just enough to register the type, not enough to create the object */
if (!shape_typeinfo_load(info)) {
/* there are currently 5 - out of ~700 shapes - which fail the size assumption
* (reading only the first 512 bytes of the shape).
* Instead of not loading them at all, they are loaded completely as a fallback.
* Another way would be to increase the size to read for every shape, seems worse.
*/
g_free (info->filename);
g_free (info);
if ((info = shape_info_load(filename)) == NULL)
return FALSE;
}
shape_info_register (info);
custom_object_new(info, otype);
return TRUE;
}
static void
load_shapes_from_tree(const gchar *directory)
{
GDir *dp;
const char *dentry;
dp = g_dir_open(directory, 0, NULL);
if (dp == NULL) {
return;
}
while ( (dentry = g_dir_read_name(dp)) ) {
gchar *filename = g_strconcat(directory, G_DIR_SEPARATOR_S,
dentry, NULL);
const gchar *p;
if (g_file_test(filename, G_FILE_TEST_IS_DIR)) {
load_shapes_from_tree(filename);
g_free(filename);
continue;
}
/* if it's not a directory, then it must be a .shape file */
if ( !g_file_test(filename, G_FILE_TEST_IS_REGULAR)
|| (strlen(dentry) < 6)) {
g_free(filename);
continue;
}
p = dentry + strlen(dentry) - 6;
if (0==strcmp(".shape",p)) {
DiaObjectType *ot;
if (!custom_object_preload(filename, &ot)) {
g_warning("could not load shape file %s",filename);
} else {
g_assert(ot);
g_assert(ot->default_user_data);
object_register_type(ot);
}
}
g_free(filename);
}
g_dir_close(dp);
}
DIA_PLUGIN_CHECK_INIT
PluginInitResult
dia_plugin_init(PluginInfo *info)
{
char *shape_path;
const char *home_dir;
if (!dia_plugin_info_init(info, _("Custom"), _("Custom XML shapes loader"),
NULL, NULL))
return DIA_PLUGIN_INIT_ERROR;
home_dir = g_get_home_dir();
if (home_dir) {
home_dir = dia_config_filename("shapes");
load_shapes_from_tree(home_dir);
g_free((char *)home_dir);
}
shape_path = getenv("DIA_SHAPE_PATH");
if (shape_path) {
char **dirs = g_strsplit(shape_path, G_SEARCHPATH_SEPARATOR_S, 0);
int i;
for (i = 0; dirs[i] != NULL; i++)
load_shapes_from_tree(dirs[i]);
g_strfreev(dirs);
} else {
char *thedir = dia_get_data_directory("shapes");
load_shapes_from_tree(thedir);
g_free(thedir);
}
return DIA_PLUGIN_INIT_OK;
}
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