initial

1 files changed, 1030 insertions, 0 deletions

diff --git a/src/main.c b/src/main.c
new file mode 100644
index 0000000..f94956a
--- /dev/null
+++ b/src/main.c
@@ -0,0 +1,1030 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
+
+/*
+ *  File-Roller
+ *
+ *  Copyright (C) 2001, 2003 Free Software Foundation, Inc.
+ *
+ *  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 Street #330, Boston, MA 02111-1307, USA.
+ */
+
+#include <config.h>
+#include <string.h>
+#include <sys/types.h>
+#include <signal.h>
+#include <stdlib.h>
+#include <gio/gio.h>
+#include "file-utils.h"
+#include "glib-utils.h"
+#include "fr-command.h"
+#include "fr-command-ace.h"
+#include "fr-command-alz.h"
+#include "fr-command-ar.h"
+#include "fr-command-arj.h"
+#include "fr-command-cfile.h"
+#include "fr-command-cpio.h"
+#include "fr-command-dpkg.h"
+#include "fr-command-iso.h"
+#include "fr-command-jar.h"
+#include "fr-command-lha.h"
+#include "fr-command-rar.h"
+#include "fr-command-rpm.h"
+#include "fr-command-tar.h"
+#include "fr-command-unstuff.h"
+#include "fr-command-zip.h"
+#include "fr-command-zoo.h"
+#include "fr-command-7z.h"
+#include "fr-command-lrzip.h"
+#include "fr-process.h"
+#include "fr-stock.h"
+#include "mateconf-utils.h"
+#include "fr-window.h"
+#include "typedefs.h"
+#include "preferences.h"
+#include "file-data.h"
+#include "main.h"
+
+#include "eggsmclient.h"
+
+static void     prepare_app         (void);
+static void     initialize_data     (void);
+static void     release_data        (void);
+
+GList        *WindowList = NULL;
+GList        *CommandList = NULL;
+gint          ForceDirectoryCreation;
+GHashTable   *ProgramsCache = NULL;
+GPtrArray    *Registered_Commands = NULL;
+
+static char **remaining_args;
+
+static char  *add_to = NULL;
+static int    add;
+static char  *extract_to = NULL;
+static int    extract;
+static int    extract_here;
+static char  *default_url = NULL;
+
+/* The capabilities are computed automatically in
+ * compute_supported_archive_types() so it's correct to initialize to 0 here. */
+FrMimeTypeDescription mime_type_desc[] = {
+	{ "application/x-7z-compressed",        ".7z",       N_("7-Zip (.7z)"), 0 },
+	{ "application/x-7z-compressed-tar",    ".tar.7z",   N_("Tar compressed with 7z (.tar.7z)"), 0 },
+	{ "application/x-ace",                  ".ace",      N_("Ace (.ace)"), 0 },
+	{ "application/x-alz",                  ".alz",      NULL, 0 },
+	{ "application/x-ar",                   ".ar",       N_("Ar (.ar)"), 0 },
+	{ "application/x-arj",                  ".arj",      N_("Arj (.arj)"), 0 },
+	{ "application/x-bzip",                 ".bz2",      NULL, 0 },
+	{ "application/x-bzip-compressed-tar",  ".tar.bz2",  N_("Tar compressed with bzip2 (.tar.bz2)"), 0 },
+	{ "application/x-bzip1",                ".bz",       NULL, 0 },
+	{ "application/x-bzip1-compressed-tar", ".tar.bz",   N_("Tar compressed with bzip (.tar.bz)"), 0 },
+	{ "application/vnd.ms-cab-compressed",  ".cab",      N_("Cabinet (.cab)"), 0 },
+	{ "application/x-cbr",                  ".cbr",      N_("Rar Archived Comic Book (.cbr)"), 0 },
+	{ "application/x-cbz",                  ".cbz",      N_("Zip Archived Comic Book (.cbz)"), 0 },
+	{ "application/x-cd-image",             ".iso",      NULL, 0 },
+	{ "application/x-compress",             ".Z",        NULL, 0 },
+	{ "application/x-compressed-tar",       ".tar.gz",   N_("Tar compressed with gzip (.tar.gz)"), 0 },
+	{ "application/x-cpio",                 ".cpio",     NULL, 0 },
+	{ "application/x-deb",                  ".deb",      NULL, 0 },
+	{ "application/x-ear",                  ".ear",      N_("Ear (.ear)"), 0 },
+	{ "application/x-ms-dos-executable",    ".exe",      N_("Self-extracting zip (.exe)"), 0 },
+	{ "application/x-gzip",                 ".gz",       NULL, 0 },
+	{ "application/x-java-archive",         ".jar",      N_("Jar (.jar)"), 0 },
+	{ "application/x-lha",                  ".lzh",      N_("Lha (.lzh)"), 0 },
+	{ "application/x-lrzip",                ".lrz",      N_("Lrzip (.lrz)"), 0},
+	{ "application/x-lrzip-compressed-tar", ".tar.lrz",  N_("Tar compressed with lrzip (.tar.lrz)"), 0 },
+	{ "application/x-lzip",                 ".lz",       NULL, 0 },
+	{ "application/x-lzip-compressed-tar",  ".tar.lz",   N_("Tar compressed with lzip (.tar.lz)"), 0 },
+	{ "application/x-lzma",                 ".lzma",     NULL, 0 },
+	{ "application/x-lzma-compressed-tar",  ".tar.lzma", N_("Tar compressed with lzma (.tar.lzma)"), 0 },
+	{ "application/x-lzop",                 ".lzo",      NULL, 0 },
+	{ "application/x-lzop-compressed-tar",  ".tar.lzo",  N_("Tar compressed with lzop (.tar.lzo)"), 0 },
+	{ "application/x-rar",                  ".rar",      N_("Rar (.rar)"), 0 },
+	{ "application/x-rpm",                  ".rpm",      NULL, 0 },
+	{ "application/x-rzip",                 ".rz",       NULL, 0 },
+	{ "application/x-tar",                  ".tar",      N_("Tar uncompressed (.tar)"), 0 },
+	{ "application/x-tarz",                 ".tar.Z",    N_("Tar compressed with compress (.tar.Z)"), 0 },
+	{ "application/x-stuffit",              ".sit",      NULL, 0 },
+	{ "application/x-war",                  ".war",      N_("War (.war)"), 0 },
+	{ "application/x-xz",                   ".xz",       N_("Xz (.xz)"), 0 },
+	{ "application/x-xz-compressed-tar",    ".tar.xz",   N_("Tar compressed with xz (.tar.xz)"), 0 },
+	{ "application/x-zoo",                  ".zoo",      N_("Zoo (.zoo)"), 0 },
+	{ "application/zip",                    ".zip",      N_("Zip (.zip)"), 0 },
+	{ NULL, NULL, NULL, 0 }
+};
+
+FrExtensionType file_ext_type[] = {
+	{ ".7z", "application/x-7z-compressed" },
+	{ ".ace", "application/x-ace" },
+	{ ".alz", "application/x-alz" },
+	{ ".ar", "application/x-ar" },
+	{ ".arj", "application/x-arj" },
+	{ ".bin", "application/x-stuffit" },
+	{ ".bz", "application/x-bzip" },
+	{ ".bz2", "application/x-bzip" },
+	{ ".cab", "application/vnd.ms-cab-compressed" },
+	{ ".cbr", "application/x-cbr" },
+	{ ".cbz", "application/x-cbz" },
+	{ ".cpio", "application/x-cpio" },
+	{ ".deb", "application/x-deb" },
+	{ ".ear", "application/x-ear" },
+	{ ".exe", "application/x-ms-dos-executable" },
+	{ ".gz", "application/x-gzip" },
+	{ ".iso", "application/x-cd-image" },
+	{ ".jar", "application/x-java-archive" },
+	{ ".lha", "application/x-lha" },
+	{ ".lrz", "application/x-lrzip" },
+	{ ".lzh", "application/x-lha" },
+	{ ".lz", "application/x-lzip" },
+	{ ".lzma", "application/x-lzma" },
+	{ ".lzo", "application/x-lzop" },
+	{ ".rar", "application/x-rar" },
+	{ ".rpm", "application/x-rpm" },
+	{ ".rz", "application/x-rzip" },
+	{ ".sit", "application/x-stuffit" },
+	{ ".tar", "application/x-tar" },
+	{ ".tar.bz", "application/x-bzip-compressed-tar" },
+	{ ".tar.bz2", "application/x-bzip-compressed-tar" },
+	{ ".tar.gz", "application/x-compressed-tar" },
+	{ ".tar.lrz", "application/x-lrzip-compressed-tar" },
+	{ ".tar.lz", "application/x-lzip-compressed-tar" },
+	{ ".tar.lzma", "application/x-lzma-compressed-tar" },
+	{ ".tar.lzo", "application/x-lzop-compressed-tar" },
+	{ ".tar.7z", "application/x-7z-compressed-tar" },
+	{ ".tar.xz", "application/x-xz-compressed-tar" },
+	{ ".tar.Z", "application/x-tarz" },
+	{ ".taz", "application/x-tarz" },
+	{ ".tbz", "application/x-bzip-compressed-tar" },
+	{ ".tbz2", "application/x-bzip-compressed-tar" },
+	{ ".tgz", "application/x-compressed-tar" },
+	{ ".txz", "application/x-xz-compressed-tar" },
+	{ ".tlz", "application/x-lzip-compressed-tar" },
+	{ ".tzma", "application/x-lzma-compressed-tar" },
+	{ ".tzo", "application/x-lzop-compressed-tar" },
+	{ ".war", "application/x-war" },
+	{ ".xz", "application/x-xz" },
+	{ ".z", "application/x-gzip" },
+	{ ".Z", "application/x-compress" },
+	{ ".zip", "application/zip" },
+	{ ".zoo", "application/x-zoo" },
+	{ NULL, NULL }
+};
+
+int single_file_save_type[64];
+int save_type[64];
+int open_type[64];
+int create_type[64];
+
+static const GOptionEntry options[] = {
+	{ "add-to", 'a', 0, G_OPTION_ARG_STRING, &add_to,
+	  N_("Add files to the specified archive and quit the program"),
+	  N_("ARCHIVE") },
+
+	{ "add", 'd', 0, G_OPTION_ARG_NONE, &add,
+	  N_("Add files asking the name of the archive and quit the program"),
+	  NULL },
+
+	{ "extract-to", 'e', 0, G_OPTION_ARG_STRING, &extract_to,
+	  N_("Extract archives to the specified folder and quit the program"),
+	  N_("FOLDER") },
+
+	{ "extract", 'f', 0, G_OPTION_ARG_NONE, &extract,
+	  N_("Extract archives asking the destination folder and quit the program"),
+	  NULL },
+
+	{ "extract-here", 'h', 0, G_OPTION_ARG_NONE, &extract_here,
+	  N_("Extract the contents of the archives in the archive folder and quit the program"),
+	  NULL },
+
+	{ "default-dir", '\0', 0, G_OPTION_ARG_STRING, &default_url,
+	  N_("Default folder to use for the '--add' and '--extract' commands"),
+	  N_("FOLDER") },
+
+	{ "force", '\0', 0, G_OPTION_ARG_NONE, &ForceDirectoryCreation,
+	  N_("Create destination folder without asking confirmation"),
+	  NULL },
+
+	{ G_OPTION_REMAINING, 0, 0, G_OPTION_ARG_STRING_ARRAY, &remaining_args,
+	  NULL,
+	  NULL },
+
+	{ NULL }
+};
+
+
+/* -- Main -- */
+
+
+static guint startup_id = 0;
+
+/* argv[0] from main(); used as the command to restart the program */
+static const char *program_argv0 = NULL;
+
+
+static gboolean
+startup_cb (gpointer data)
+{
+	g_source_remove (startup_id);
+	startup_id = 0;
+
+	initialize_data ();
+	prepare_app ();
+
+	return FALSE;
+}
+
+
+static void
+fr_save_state (EggSMClient *client, GKeyFile *state, gpointer user_data)
+{
+	/* discard command is automatically set by EggSMClient */
+
+	GList *window;
+	const char *argv[2] = { NULL };
+	guint i;
+
+	/* restart command */
+	argv[0] = program_argv0;
+	argv[1] = NULL;
+
+	egg_sm_client_set_restart_command (client, 1, argv);
+
+	/* state */
+	for (window = WindowList, i = 0; window; window = window->next, i++) {
+		FrWindow *session = window->data;
+		gchar *key;
+
+		key = g_strdup_printf ("archive%d", i);
+		if ((session->archive == NULL) || (session->archive->file == NULL)) {
+			g_key_file_set_string (state, "Session", key, "");
+		} else {
+			gchar *uri;
+
+			uri = g_file_get_uri (session->archive->file);
+			g_key_file_set_string (state, "Session", key, uri);
+			g_free (uri);
+		}
+		g_free (key);
+	}
+
+	g_key_file_set_integer (state, "Session", "archives", i);
+}
+
+int
+main (int argc, char **argv)
+{
+	GError *error = NULL;
+	EggSMClient *client = NULL;
+	GOptionContext *context = NULL;
+
+	program_argv0 = argv[0];
+
+	bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);
+	bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
+	textdomain (GETTEXT_PACKAGE);
+
+	context = g_option_context_new (N_("- Create and modify an archive"));
+	g_option_context_set_translation_domain (context, GETTEXT_PACKAGE);
+	g_option_context_add_main_entries (context, options, GETTEXT_PACKAGE);
+
+	g_option_context_add_group (context, gtk_get_option_group (TRUE));
+	g_option_context_add_group (context, egg_sm_client_get_option_group ());
+
+	if (! g_option_context_parse (context, &argc, &argv, &error)) {
+		g_critical ("Failed to parse arguments: %s", error->message);
+		g_error_free (error);
+		g_option_context_free (context);
+		return EXIT_FAILURE;
+	}
+
+	g_option_context_free (context);
+
+	g_set_application_name (_("File Roller"));
+	gtk_window_set_default_icon_name ("file-roller");
+
+	client = egg_sm_client_get ();
+	g_signal_connect (client, "save-state", G_CALLBACK (fr_save_state), NULL);
+
+	gtk_icon_theme_append_search_path (gtk_icon_theme_get_default (),
+					   PKG_DATA_DIR G_DIR_SEPARATOR_S "icons");
+
+	fr_stock_init ();
+	/* init_session (argv); */
+	startup_id = g_idle_add (startup_cb, NULL);
+	gtk_main ();
+	release_data ();
+
+	return 0;
+}
+
+/* Initialize application data. */
+
+
+static void
+initialize_data (void)
+{
+	eel_mateconf_monitor_add ("/apps/file-roller");
+	eel_mateconf_monitor_add (PREF_CAJA_CLICK_POLICY);
+
+	ProgramsCache = g_hash_table_new_full (g_str_hash,
+					       g_str_equal,
+					       g_free,
+					       NULL);
+}
+
+/* Free application data. */
+
+
+void
+command_done (CommandData *cdata)
+{
+	if (cdata == NULL)
+		return;
+
+	if ((cdata->temp_dir != NULL) && path_is_dir (cdata->temp_dir)) {
+		char *argv[4];
+
+		argv[0] = "rm";
+		argv[1] = "-rf";
+		argv[2] = cdata->temp_dir;
+		argv[3] = NULL;
+		g_spawn_sync (g_get_tmp_dir (), argv, NULL,
+			      G_SPAWN_SEARCH_PATH,
+			      NULL, NULL,
+			      NULL, NULL, NULL,
+			      NULL);
+	}
+
+	g_free (cdata->command);
+	if (cdata->app != NULL)
+		g_object_unref (cdata->app);
+	path_list_free (cdata->file_list);
+	g_free (cdata->temp_dir);
+	if (cdata->process != NULL)
+		g_object_unref (cdata->process);
+
+	CommandList = g_list_remove (CommandList, cdata);
+	g_free (cdata);
+}
+
+
+static void
+release_data ()
+{
+	g_hash_table_destroy (ProgramsCache);
+
+	eel_global_client_free ();
+
+	while (CommandList != NULL) {
+		CommandData *cdata = CommandList->data;
+		command_done (cdata);
+	}
+}
+
+/* Create the windows. */
+
+
+static void
+migrate_dir_from_to (const char *from_dir,
+		     const char *to_dir)
+{
+	char *from_path;
+	char *to_path;
+
+	from_path = get_home_relative_path (from_dir);
+	to_path = get_home_relative_path (to_dir);
+
+	if (uri_is_dir (from_path) && ! uri_exists (to_path)) {
+		char *line;
+		char *e1;
+		char *e2;
+
+		e1 = g_shell_quote (from_path);
+		e2 = g_shell_quote (to_path);
+		line = g_strdup_printf ("mv -f %s %s", e1, e2);
+		g_free (e1);
+		g_free (e2);
+
+		g_spawn_command_line_sync (line, NULL, NULL, NULL, NULL);
+		g_free (line);
+	}
+
+	g_free (from_path);
+	g_free (to_path);
+}
+
+
+static void
+migrate_file_from_to (const char *from_file,
+		      const char *to_file)
+{
+	char *from_path;
+	char *to_path;
+
+	from_path = get_home_relative_path (from_file);
+	to_path = get_home_relative_path (to_file);
+
+	if (uri_is_file (from_path) && ! uri_exists (to_path)) {
+		char *line;
+		char *e1;
+		char *e2;
+
+		e1 = g_shell_quote (from_path);
+		e2 = g_shell_quote (to_path);
+		line = g_strdup_printf ("mv -f %s %s", e1, e2);
+		g_free (e1);
+		g_free (e2);
+
+		g_spawn_command_line_sync (line, NULL, NULL, NULL, NULL);
+		g_free (line);
+	}
+
+	g_free (from_path);
+	g_free (to_path);
+}
+
+
+static void
+migrate_to_new_directories (void)
+{
+	migrate_dir_from_to  (OLD_RC_OPTIONS_DIR, RC_OPTIONS_DIR);
+	migrate_file_from_to (OLD_RC_BOOKMARKS_FILE, RC_BOOKMARKS_FILE);
+	migrate_file_from_to (OLD_RC_RECENT_FILE, RC_RECENT_FILE);
+
+	eel_mateconf_set_boolean (PREF_MIGRATE_DIRECTORIES, FALSE);
+}
+
+
+/* -- FrRegisteredCommand -- */
+
+
+FrRegisteredCommand *
+fr_registered_command_new (GType command_type)
+{
+	FrRegisteredCommand  *reg_com;
+	FrCommand            *command;
+	const char          **mime_types;
+	int                   i;
+
+	reg_com = g_new0 (FrRegisteredCommand, 1);
+	reg_com->ref = 1;
+	reg_com->type = command_type;
+	reg_com->caps = g_ptr_array_new ();
+	reg_com->packages = g_ptr_array_new ();
+
+	command = (FrCommand*) g_object_new (reg_com->type, NULL);
+	mime_types = fr_command_get_mime_types (command);
+	for (i = 0; mime_types[i] != NULL; i++) {
+		const char         *mime_type;
+		FrMimeTypeCap      *cap;
+		FrMimeTypePackages *packages;
+
+		mime_type = get_static_string (mime_types[i]);
+
+		cap = g_new0 (FrMimeTypeCap, 1);
+		cap->mime_type = mime_type;
+		cap->current_capabilities = fr_command_get_capabilities (command, mime_type, TRUE);
+		cap->potential_capabilities = fr_command_get_capabilities (command, mime_type, FALSE);
+		g_ptr_array_add (reg_com->caps, cap);
+
+		packages = g_new0 (FrMimeTypePackages, 1);
+		packages->mime_type = mime_type;
+		packages->packages = fr_command_get_packages (command, mime_type);
+		g_ptr_array_add (reg_com->packages, packages);
+	}
+
+	g_object_unref (command);
+
+	return reg_com;
+}
+
+
+void
+fr_registered_command_ref (FrRegisteredCommand *reg_com)
+{
+	reg_com->ref++;
+}
+
+
+void
+fr_registered_command_unref (FrRegisteredCommand *reg_com)
+{
+	if (--(reg_com->ref) != 0)
+		return;
+
+	g_ptr_array_foreach (reg_com->caps, (GFunc) g_free, NULL);
+	g_ptr_array_free (reg_com->caps, TRUE);
+	g_free (reg_com);
+}
+
+
+FrCommandCaps
+fr_registered_command_get_capabilities (FrRegisteredCommand *reg_com,
+				        const char          *mime_type)
+{
+	int i;
+
+	for (i = 0; i < reg_com->caps->len; i++) {
+		FrMimeTypeCap *cap;
+
+		cap = g_ptr_array_index (reg_com->caps, i);
+		if (strcmp (mime_type, cap->mime_type) == 0)
+			return cap->current_capabilities;
+	}
+
+	return FR_COMMAND_CAN_DO_NOTHING;
+}
+
+
+FrCommandCaps
+fr_registered_command_get_potential_capabilities (FrRegisteredCommand *reg_com,
+						  const char          *mime_type)
+{
+	int i;
+
+	if (mime_type == NULL)
+		return FR_COMMAND_CAN_DO_NOTHING;
+
+	for (i = 0; i < reg_com->caps->len; i++) {
+		FrMimeTypeCap *cap;
+
+		cap = g_ptr_array_index (reg_com->caps, i);
+		if ((cap->mime_type != NULL) && (strcmp (mime_type, cap->mime_type) == 0))
+			return cap->potential_capabilities;
+	}
+
+	return FR_COMMAND_CAN_DO_NOTHING;
+}
+
+
+void
+register_command (GType command_type)
+{
+	if (Registered_Commands == NULL)
+		Registered_Commands = g_ptr_array_sized_new (5);
+	g_ptr_array_add (Registered_Commands, fr_registered_command_new (command_type));
+}
+
+
+gboolean
+unregister_command (GType command_type)
+{
+	int i;
+
+	for (i = 0; i < Registered_Commands->len; i++) {
+		FrRegisteredCommand *command;
+
+		command = g_ptr_array_index (Registered_Commands, i);
+		if (command->type == command_type) {
+			g_ptr_array_remove_index (Registered_Commands, i);
+			fr_registered_command_unref (command);
+			return TRUE;
+		}
+	}
+
+	return FALSE;
+}
+
+
+static void
+register_commands (void)
+{
+	/* The order here is important. Commands registered earlier have higher
+	 * priority.  However commands that can read and write a file format
+	 * have higher priority over commands that can only read the same
+	 * format, regardless of the registration order. */
+
+	register_command (FR_TYPE_COMMAND_TAR);
+	register_command (FR_TYPE_COMMAND_CFILE);
+	register_command (FR_TYPE_COMMAND_7Z);
+	register_command (FR_TYPE_COMMAND_DPKG);
+
+	register_command (FR_TYPE_COMMAND_ACE);
+	register_command (FR_TYPE_COMMAND_ALZ);
+	register_command (FR_TYPE_COMMAND_AR);
+	register_command (FR_TYPE_COMMAND_ARJ);
+	register_command (FR_TYPE_COMMAND_CPIO);
+	register_command (FR_TYPE_COMMAND_ISO);
+	register_command (FR_TYPE_COMMAND_JAR);
+	register_command (FR_TYPE_COMMAND_LHA);
+	register_command (FR_TYPE_COMMAND_RAR);
+	register_command (FR_TYPE_COMMAND_RPM);
+	register_command (FR_TYPE_COMMAND_UNSTUFF);
+	register_command (FR_TYPE_COMMAND_ZIP);
+	register_command (FR_TYPE_COMMAND_LRZIP);
+	register_command (FR_TYPE_COMMAND_ZOO);
+}
+
+
+GType
+get_command_type_from_mime_type (const char    *mime_type,
+				 FrCommandCaps  requested_capabilities)
+{
+	int i;
+
+	if (mime_type == NULL)
+		return 0;
+
+	for (i = 0; i < Registered_Commands->len; i++) {
+		FrRegisteredCommand *command;
+		FrCommandCaps        capabilities;
+
+		command = g_ptr_array_index (Registered_Commands, i);
+		capabilities = fr_registered_command_get_capabilities (command, mime_type);
+
+		/* the command must support all the requested capabilities */
+		if (((capabilities ^ requested_capabilities) & requested_capabilities) == 0)
+			return command->type;
+	}
+
+	return 0;
+}
+
+
+GType
+get_preferred_command_for_mime_type (const char    *mime_type,
+				     FrCommandCaps  requested_capabilities)
+{
+	int i;
+
+	for (i = 0; i < Registered_Commands->len; i++) {
+		FrRegisteredCommand *command;
+		FrCommandCaps        capabilities;
+
+		command = g_ptr_array_index (Registered_Commands, i);
+		capabilities = fr_registered_command_get_potential_capabilities (command, mime_type);
+
+		/* the command must support all the requested capabilities */
+		if (((capabilities ^ requested_capabilities) & requested_capabilities) == 0)
+			return command->type;
+	}
+
+	return 0;
+}
+
+
+void
+update_registered_commands_capabilities (void)
+{
+	int i;
+
+	g_hash_table_remove_all (ProgramsCache);
+
+	for (i = 0; i < Registered_Commands->len; i++) {
+		FrRegisteredCommand *reg_com;
+		FrCommand           *command;
+		int                  j;
+
+		reg_com = g_ptr_array_index (Registered_Commands, i);
+		command = (FrCommand*) g_object_new (reg_com->type, NULL);
+		for (j = 0; j < reg_com->caps->len; j++) {
+			FrMimeTypeCap *cap = g_ptr_array_index (reg_com->caps, j);
+
+			cap->current_capabilities = fr_command_get_capabilities (command, cap->mime_type, TRUE);
+			cap->potential_capabilities = fr_command_get_capabilities (command, cap->mime_type, FALSE);
+		}
+
+		g_object_unref (command);
+	}
+}
+
+
+const char *
+get_mime_type_from_extension (const char *ext)
+{
+	int i;
+
+	if (ext == NULL)
+		return NULL;
+
+	for (i = G_N_ELEMENTS (file_ext_type) - 1; i >= 0; i--) {
+		if (file_ext_type[i].ext == NULL)
+			continue;
+		if (strcasecmp (ext, file_ext_type[i].ext) == 0)
+			return get_static_string (file_ext_type[i].mime_type);
+	}
+
+	return NULL;
+}
+
+
+const char *
+get_archive_filename_extension (const char *filename)
+{
+	const char *ext;
+	int         i;
+
+	if (filename == NULL)
+		return NULL;
+
+	ext = get_file_extension (filename);
+	if (ext == NULL)
+		return NULL;
+
+	for (i = G_N_ELEMENTS (file_ext_type) - 1; i >= 0; i--) {
+		if (file_ext_type[i].ext == NULL)
+			continue;
+		if (strcasecmp (ext, file_ext_type[i].ext) == 0)
+			return ext;
+	}
+
+	return NULL;
+}
+
+
+int
+get_mime_type_index (const char *mime_type)
+{
+	int i;
+
+	for (i = 0; mime_type_desc[i].mime_type != NULL; i++)
+		if (strcmp (mime_type_desc[i].mime_type, mime_type) == 0)
+			return i;
+	return -1;
+}
+
+
+static void
+add_if_non_present (int *a,
+	            int *n,
+	            int  o)
+{
+	int i;
+
+	for (i = 0; i < *n; i++) {
+		if (a[i] == o)
+			return;
+	}
+	a[*n] = o;
+	*n = *n + 1;
+}
+
+
+static int
+cmp_mime_type_by_extension (const void *p1,
+			    const void *p2)
+{
+	int i1 = * (int*) p1;
+	int i2 = * (int*) p2;
+
+	return strcmp (mime_type_desc[i1].default_ext, mime_type_desc[i2].default_ext);
+}
+
+
+static int
+cmp_mime_type_by_description (const void *p1,
+			      const void *p2)
+{
+	int i1 = * (int*) p1;
+	int i2 = * (int*) p2;
+
+	return g_utf8_collate (_(mime_type_desc[i1].name), _(mime_type_desc[i2].name));
+}
+
+
+static void
+sort_mime_types (int *a,
+                 int(*compar)(const void *, const void *))
+{
+	int n = 0;
+
+	while (a[n] != -1)
+		n++;
+	qsort (a, n, sizeof (int), compar);
+}
+
+
+void
+sort_mime_types_by_extension (int *a)
+{
+	sort_mime_types (a, cmp_mime_type_by_extension);
+}
+
+
+void
+sort_mime_types_by_description (int *a)
+{
+	sort_mime_types (a, cmp_mime_type_by_description);
+}
+
+
+static void
+compute_supported_archive_types (void)
+{
+	int sf_i = 0, s_i = 0, o_i = 0, c_i = 0;
+	int i;
+
+	for (i = 0; i < Registered_Commands->len; i++) {
+		FrRegisteredCommand *reg_com;
+		int                  j;
+
+		reg_com = g_ptr_array_index (Registered_Commands, i);
+		for (j = 0; j < reg_com->caps->len; j++) {
+			FrMimeTypeCap *cap;
+			int            idx;
+
+			cap = g_ptr_array_index (reg_com->caps, j);
+			idx = get_mime_type_index (cap->mime_type);
+			if (idx < 0) {
+				g_warning ("mime type not recognized: %s", cap->mime_type);
+				continue;
+			}
+			mime_type_desc[idx].capabilities |= cap->current_capabilities;
+			if (cap->current_capabilities & FR_COMMAND_CAN_READ)
+				add_if_non_present (open_type, &o_i, idx);
+			if (cap->current_capabilities & FR_COMMAND_CAN_WRITE) {
+				if (cap->current_capabilities & FR_COMMAND_CAN_ARCHIVE_MANY_FILES) {
+					add_if_non_present (save_type, &s_i, idx);
+					if (cap->current_capabilities & FR_COMMAND_CAN_WRITE)
+						add_if_non_present (create_type, &c_i, idx);
+				}
+				add_if_non_present (single_file_save_type, &sf_i, idx);
+			}
+		}
+	}
+
+	open_type[o_i] = -1;
+	save_type[s_i] = -1;
+	single_file_save_type[sf_i] = -1;
+	create_type[c_i] = -1;
+}
+
+
+static char *
+get_uri_from_command_line (const char *path)
+{
+	GFile *file;
+	char  *uri;
+
+	file = g_file_new_for_commandline_arg (path);
+	uri = g_file_get_uri (file);
+	g_object_unref (file);
+
+	return uri;
+}
+
+
+static void
+fr_restore_session (EggSMClient *client)
+{
+	GKeyFile *state = NULL;
+	guint i;
+
+	state = egg_sm_client_get_state_file (client);
+
+	i = g_key_file_get_integer (state, "Session", "archives", NULL);
+
+	for (; i > 0; i--) {
+		GtkWidget *window;
+		gchar *key, *archive;
+
+		key = g_strdup_printf ("archive%d", i);
+		archive = g_key_file_get_string (state, "Session", key, NULL);
+		g_free (key);
+
+		window = fr_window_new ();
+		gtk_widget_show (window);
+		if (strlen (archive))
+			fr_window_archive_open (FR_WINDOW (window), archive, GTK_WINDOW (window));
+
+		g_free (archive);
+	}
+}
+
+static void
+prepare_app (void)
+{
+	char *uri;
+	char *extract_to_path = NULL;
+	char *add_to_path = NULL;
+	EggSMClient *client = NULL;
+
+	/* create the config dir if necessary. */
+
+	uri = get_home_relative_uri (RC_DIR);
+
+	if (uri_is_file (uri)) { /* before the mateconf port this was a file, now it's folder. */
+		GFile *file;
+
+		file = g_file_new_for_uri (uri);
+		g_file_delete (file, NULL, NULL);
+		g_object_unref (file);
+	}
+
+	ensure_dir_exists (uri, 0700, NULL);
+	g_free (uri);
+
+	if (eel_mateconf_get_boolean (PREF_MIGRATE_DIRECTORIES, TRUE))
+		migrate_to_new_directories ();
+
+	register_commands ();
+	compute_supported_archive_types ();
+
+	client = egg_sm_client_get ();
+	if (egg_sm_client_is_resumed (client)) {
+		fr_restore_session (client);
+		return;
+	}
+
+	/**/
+
+	if (remaining_args == NULL) { /* No archive specified. */
+		gtk_widget_show (fr_window_new ());
+		return;
+	}
+
+	if (extract_to != NULL)
+		extract_to_path = get_uri_from_command_line (extract_to);
+
+	if (add_to != NULL)
+		add_to_path = get_uri_from_command_line (add_to);
+
+	if ((add_to != NULL) || (add == 1)) { /* Add files to an archive */
+		GtkWidget   *window;
+		GList       *file_list = NULL;
+		const char  *filename;
+		int          i = 0;
+
+		window = fr_window_new ();
+		if (default_url != NULL)
+			fr_window_set_default_dir (FR_WINDOW (window), default_url, TRUE);
+
+		while ((filename = remaining_args[i++]) != NULL)
+			file_list = g_list_prepend (file_list, get_uri_from_command_line (filename));
+		file_list = g_list_reverse (file_list);
+
+		fr_window_new_batch (FR_WINDOW (window));
+		fr_window_set_batch__add (FR_WINDOW (window), add_to_path, file_list);
+		fr_window_append_batch_action (FR_WINDOW (window),
+					       FR_BATCH_ACTION_QUIT,
+					       NULL,
+					       NULL);
+		fr_window_start_batch (FR_WINDOW (window));
+	}
+	else if ((extract_to != NULL)
+		  || (extract == 1)
+		  || (extract_here == 1)) { /* Extract all archives. */
+		GtkWidget  *window;
+		const char *archive;
+		int         i = 0;
+
+		window = fr_window_new ();
+		if (default_url != NULL)
+			fr_window_set_default_dir (FR_WINDOW (window), default_url, TRUE);
+
+		fr_window_new_batch (FR_WINDOW (window));
+		while ((archive = remaining_args[i++]) != NULL) {
+			char *archive_uri;
+
+			archive_uri = get_uri_from_command_line (archive);
+			if (extract_here == 1)
+				fr_window_set_batch__extract_here (FR_WINDOW (window),
+								   archive_uri);
+			else
+				fr_window_set_batch__extract (FR_WINDOW (window),
+							      archive_uri,
+							      extract_to_path);
+			g_free (archive_uri);
+		}
+		fr_window_append_batch_action (FR_WINDOW (window),
+					       FR_BATCH_ACTION_QUIT,
+					       NULL,
+					       NULL);
+
+		fr_window_start_batch (FR_WINDOW (window));
+	}
+	else { /* Open each archive in a window */
+		const char *filename = NULL;
+
+		int i = 0;
+		while ((filename = remaining_args[i++]) != NULL) {
+			GtkWidget *window;
+			GFile     *file;
+			char      *uri;
+
+			window = fr_window_new ();
+			gtk_widget_show (window);
+
+			file = g_file_new_for_commandline_arg (filename);
+			uri = g_file_get_uri (file);
+			fr_window_archive_open (FR_WINDOW (window), uri, GTK_WINDOW (window));
+			g_free (uri);
+			g_object_unref (file);
+		}
+	}
+
+	g_free (add_to_path);
+	g_free (extract_to_path);
+}