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|
/* -*- mode: C; c-file-style: "linux" -*- */
/* GdkPixbuf library
* queryloaders.c:
*
* Copyright (C) 2002 The Free Software Foundation
*
* Author: Matthias Clasen <maclas@gmx.de>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include <config.h>
#include <glib.h>
#include <glib/gprintf.h>
#include <gmodule.h>
#include <errno.h>
#include <string.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include "gdk-pixbuf/gdk-pixbuf.h"
#include "gdk-pixbuf/gdk-pixbuf-private.h"
#include "gdk-pixbuf/gdk-pixbuf-io.h"
#if USE_LA_MODULES
#define SOEXT ".la"
#else
#define SOEXT ("." G_MODULE_SUFFIX)
#endif
#define SOEXT_LEN (strlen (SOEXT))
static void
print_escaped (const char *str)
{
gchar *tmp = g_strescape (str, "");
g_printf ("\"%s\" ", tmp);
g_free (tmp);
}
static int
loader_sanity_check (const char *path, GdkPixbufFormat *info, GdkPixbufModule *vtable)
{
const GdkPixbufModulePattern *pattern;
const char *error = "";
for (pattern = info->signature; pattern->prefix; pattern++)
{
int prefix_len = strlen (pattern->prefix);
if (prefix_len == 0)
{
error = "empty pattern";
goto error;
}
if (pattern->mask)
{
int mask_len = strlen (pattern->mask);
if (mask_len != prefix_len)
{
error = "mask length mismatch";
goto error;
}
if (strspn (pattern->mask, " !xzn") < mask_len)
{
error = "bad char in mask";
goto error;
}
}
}
if (!vtable->load && !vtable->begin_load && !vtable->load_animation)
{
error = "no load method implemented";
goto error;
}
if (vtable->begin_load && (!vtable->stop_load || !vtable->load_increment))
{
error = "incremental loading support incomplete";
goto error;
}
if ((info->flags & GDK_PIXBUF_FORMAT_WRITABLE) && !vtable->save)
{
error = "loader claims to support saving but doesn't implement save";
goto error;
}
return 1;
error:
g_fprintf (stderr, "Loader sanity check failed for %s: %s\n",
path, error);
return 0;
}
static void
write_loader_info (const char *path, GdkPixbufFormat *info)
{
const GdkPixbufModulePattern *pattern;
char **mime;
char **ext;
g_printf("\"%s\"\n", path);
g_printf ("\"%s\" %d \"%s\" \"%s\"\n",
info->name, info->flags,
info->domain ? info->domain : GETTEXT_PACKAGE, info->description);
for (mime = info->mime_types; *mime; mime++) {
g_printf ("\"%s\" ", *mime);
}
g_printf ("\"\"\n");
for (ext = info->extensions; *ext; ext++) {
g_printf ("\"%s\" ", *ext);
}
g_printf ("\"\"\n");
for (pattern = info->signature; pattern->prefix; pattern++) {
print_escaped (pattern->prefix);
print_escaped (pattern->mask ? (const char *)pattern->mask : "");
g_printf ("%d\n", pattern->relevance);
}
g_printf ("\n");
}
static void
query_module (const char *dir, const char *file)
{
char *path;
GModule *module;
void (*fill_info) (GdkPixbufFormat *info);
void (*fill_vtable) (GdkPixbufModule *module);
if (g_path_is_absolute (file))
path = g_strdup (file);
else
path = g_build_filename (dir, file, NULL);
module = g_module_open (path, 0);
if (module &&
g_module_symbol (module, "fill_info", (gpointer *) &fill_info) &&
g_module_symbol (module, "fill_vtable", (gpointer *) &fill_vtable)) {
GdkPixbufFormat *info;
GdkPixbufModule *vtable;
info = g_new0 (GdkPixbufFormat, 1);
vtable = g_new0 (GdkPixbufModule, 1);
(*fill_info) (info);
(*fill_vtable) (vtable);
if (loader_sanity_check (path, info, vtable))
write_loader_info (path, info);
g_free (info);
g_free (vtable);
}
else {
if (module == NULL)
g_fprintf (stderr, "g_module_open() failed for %s: %s\n", path,
g_module_error());
else
g_fprintf (stderr, "Cannot load loader %s\n", path);
}
if (module)
g_module_close (module);
g_free (path);
}
int main (int argc, char **argv)
{
gint i;
g_printf ("# GdkPixbuf Image Loader Modules file\n"
"# Automatically generated file, do not edit\n"
"#\n");
if (argc == 1) {
#ifdef USE_GMODULE
const char *path;
GDir *dir;
path = g_getenv ("GDK_PIXBUF_MODULEDIR");
if (path == NULL || *path == '\0')
path = PIXBUF_LIBDIR;
g_printf ("# LoaderDir = %s\n#\n", path);
dir = g_dir_open (path, 0, NULL);
if (dir) {
const char *dent;
while ((dent = g_dir_read_name (dir))) {
gint len = strlen (dent);
if (len > SOEXT_LEN &&
strcmp (dent + len - SOEXT_LEN, SOEXT) == 0) {
query_module (path, dent);
}
}
g_dir_close (dir);
}
#else
g_printf ("# dynamic loading of modules not supported\n");
#endif
}
else {
char *cwd = g_get_current_dir ();
for (i = 1; i < argc; i++)
query_module (cwd, argv[i]);
g_free (cwd);
}
return 0;
}
|
