| 0,0 → 1,327 |
|---|
| /* $Id$ |
| * |
| * follow-symlink.h |
| * nautilus-follow-symlink: Nautilus extension which allows opening the real |
| * path of symbolic links |
| * |
| * Copyright (C) 2006 Toni Corvera |
| * |
| * 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 |
| * |
| * Author: Toni Corvera <outlyer@outlyer.net> |
| */ |
| |
| #include "follow-symlink.h" |
| |
| extern int errno; |
| |
| /* Menu initialization */ |
| void fsl_extension_menu_provider_iface_init(NautilusMenuProviderIface *iface) |
| { |
| TRACE(); |
| |
| iface->get_file_items = fsl_get_file_items; |
| iface->get_background_items = fsl_get_background_items; |
| } |
| |
| /* Implementation of the menu attachment, |
| * this is slightly different whith file items and with background (one folder) |
| * items, but shares most of the code, so the common part is here. |
| */ |
| GList * fsl_get_items_impl(GtkWidget * window, |
| NautilusFileInfo * file_info, |
| gboolean is_file_item, |
| GList * input) |
| { |
| TRACE(); |
| |
| NautilusMenuItem *item; |
| |
| // Only file uris |
| { |
| // TODO: what about GnomeVFSFileInfo's is_local ? |
| gchar * uri_scheme = nautilus_file_info_get_uri_scheme(file_info); |
| if (strcmp(uri_scheme, "file") != 0) { |
| FSL_LOG1( "Not file scheme" ); |
| return NULL; |
| } |
| g_free(uri_scheme); |
| } |
| |
| // We know the file is either a directory or a symlink to a directory |
| // TODO: Has glib/gnome any better/faster alternatives? |
| GnomeVFSFileInfo * gfi = nautilus_file_info_get_vfs_file_info(file_info); |
| |
| /* TODO: In which situations might the flags field be invalid? |
| * Hence, can the older stat version be dumped safely? |
| */ |
| g_assert( (gfi->valid_fields & GNOME_VFS_FILE_INFO_FIELDS_FLAGS) > 0 ); |
| |
| if ( (gfi->flags & GNOME_VFS_FILE_FLAGS_SYMLINK) == 0 ) { |
| FSL_LOG("GnomeVFS Flags: ! SYMLINK in %s", nautilus_file_info_get_uri(file_info)); |
| return NULL; |
| } |
| |
| item = fsl_menu_item_new(gtk_widget_get_screen(window), |
| is_file_item, |
| nautilus_file_info_get_name(file_info)); |
| g_signal_connect(item, "activate", G_CALLBACK(fsl_callback), file_info); |
| |
| return g_list_append(input, item); |
| } |
| |
| GList * |
| fsl_get_background_items(NautilusMenuProvider * provider __UNUSED, |
| GtkWidget * window, |
| NautilusFileInfo * current_folder) |
| { |
| TRACE(); |
| |
| if (NULL == current_folder) { // XXX: Does this ever happen? |
| FSL_LOG1( "No folder selected"); |
| } |
| return fsl_get_items_impl(window, current_folder, FALSE, NULL); |
| } |
| |
| |
| gboolean file_is_directory (const gpointer const file_data) |
| { |
| TRACE(); |
| |
| /* |
| * Apparently type is never GNOME_VFS_FILE_TYPE_SYMBOLIC_LINK and symlinks |
| * are resolved to the target type |
| */ |
| const GnomeVFSFileInfo * const gfi = nautilus_file_info_get_vfs_file_info(file_data); |
| return gfi->type == GNOME_VFS_FILE_TYPE_DIRECTORY; |
| } |
| |
| /* |
| * Bind to the menu if needed |
| * |
| * |
| */ |
| GList * fsl_get_file_items (NautilusMenuProvider * provider __UNUSED, |
| GtkWidget * window, |
| GList * files) |
| { |
| TRACE(); |
| |
| // Number of files = g_list_length(files) |
| // Directory = nautilus_file_info_is_directory(files->data) |
| if (NULL == files) { |
| FSL_LOG1("No file selected"); |
| return NULL; |
| } |
| |
| assert( g_list_length(files) > 0 ); |
| |
| FSL_LOG_COND( g_list_length(files) > 1, "More than one file selected (%d)", g_list_length(files) ); |
| |
| GList * items = NULL; |
| |
| for (int i=0; i<g_list_length(files); ++i) { |
| const gpointer file_info = g_list_nth_data(files, i); |
| if (!file_is_directory(file_info)) { |
| FSL_LOG ( "File %s is not a directory, discarded", |
| nautilus_file_info_get_name(file_info) ); |
| continue; |
| } |
| FSL_LOG( "%s is a directory", nautilus_file_info_get_name(file_info) ); |
| // TODO: Am I loosing memory? |
| GList * ret = fsl_get_items_impl(window, file_info, TRUE, items); |
| if (NULL != ret) { |
| items = ret; |
| } |
| } |
| |
| return items; |
| } |
| |
| /* |
| * Opens the real path of the symbolic link |
| * |
| * file_info: The symbolic link |
| */ |
| void fsl_callback (NautilusMenuItem * item __UNUSED, NautilusFileInfo * file_info) |
| { |
| TRACE(); |
| |
| gchar ** argv; |
| const GnomeVFSFileInfo * gfi = nautilus_file_info_get_vfs_file_info(file_info); |
| // See /usr/include/gnome-vfs-2.0/libgnomevfs/gnome-vfs-file-info.h, |
| // this one is the "realpath()" (3), also it isn't urlencoded |
| const gchar const * target = gfi->symlink_name; |
| |
| const gchar const * BASE_CMD = "nautilus --no-desktop --no-default-window '%s'"; |
| const gsize mem_block_size = printf_string_upper_bound(BASE_CMD, target); |
| gchar * command_line = g_try_malloc( mem_block_size ); |
| |
| if (NULL == command_line) { |
| g_printerr(__FILE__ ":%d: Failed to allocate enough memory " |
| "for command line, can't spawn new nautilus.\n", __LINE__); |
| // Redundant, but issues a CRITICAL message |
| g_return_if_fail( NULL != command_line ); |
| } |
| |
| g_sprintf(command_line, BASE_CMD, target); |
| |
| if (FALSE == g_shell_parse_argv(command_line, NULL, &argv, NULL)) { |
| g_free(command_line); |
| |
| g_printerr("Failed in creating the arguments for the child nautilus.\n"); |
| //g_return_if_fail( FALSE ); |
| g_return_if_reached(); |
| } |
| |
| g_printf("nautilus-follow-symlink: Spawning nautilus with\n '%s'\n", command_line); |
| |
| g_spawn_async( NULL, // Inherit CWD |
| argv, |
| NULL, |
| G_SPAWN_SEARCH_PATH, //| G_SPAWN_DO_NOT_REAP_CHILD, |
| NULL, NULL, NULL, NULL); |
| |
| g_free(command_line); |
| g_strfreev(argv); |
| } |
| |
| /* |
| * Creates the new menu item |
| * |
| * is_file_item: TRUE if we're working over a (selected) file, FALSE if working |
| * over a (opened) folder |
| * base_name: file name, without path, of the given file |
| */ |
| NautilusMenuItem * fsl_menu_item_new(GdkScreen *screen __UNUSED, |
| gboolean is_file_item, |
| const gchar * a_base_name) |
| { |
| TRACE(); |
| |
| NautilusMenuItem *ret; |
| |
| gchar * name, * tooltip, * fmt_name, * fmt_tooltip, * unique_name; |
| |
| if (is_file_item) { |
| fmt_name = _("Follow symbolic _link '%s'"); |
| fmt_tooltip = _("Open the directory pointed by the symbolic link '%s'"); |
| } |
| else { |
| fmt_name = _("Open _real path of '%s'"); |
| fmt_tooltip = _("Open the real path of the folder pointed by '%s'"); |
| } |
| |
| gchar * base_name = (gchar*)a_base_name; |
| |
| // Replace any _ in the file name with __ (to display correctly in the |
| // context menu) |
| { |
| // Count them |
| size_t count = 0; |
| for (size_t i=0; i<strlen(base_name); ++i) { |
| if (*(base_name + i) == '_') { |
| ++count; |
| } |
| } |
| |
| // Escape the string if needed |
| if (count > 0) { |
| gchar * escaped_name = g_malloc( (strlen(base_name) + count)*sizeof(gchar) ); |
| gchar * src = base_name, * dst = escaped_name; |
| |
| while (count > 0) { |
| const gchar c = *src; |
| if (c == '_') { |
| *dst = '_'; |
| dst++; |
| |
| --count; |
| } |
| *dst = *src; |
| dst++; src++; |
| } |
| g_stpcpy(dst, src); |
| base_name = escaped_name; |
| } |
| } |
| |
| // Trial and error showed that the menu item name must be different |
| // when various are to be shown (multiple selections), and also that the |
| // name should always be the same for a given file, hence the base name is |
| // appended to the command name |
| static const gchar * const ITEM_NAME_FMT = "FsymlinkExtension::follow_symlink_%s"; |
| |
| name = g_try_malloc( printf_string_upper_bound(fmt_name, base_name) ); |
| tooltip = g_try_malloc( printf_string_upper_bound(fmt_tooltip, a_base_name) ); |
| unique_name = g_try_malloc( printf_string_upper_bound(ITEM_NAME_FMT, a_base_name) ); |
| |
| |
| if (NULL == name || NULL == tooltip || NULL == unique_name) { |
| // Let's try to keep nautilus going if no allocation is possible |
| |
| if (name) g_free(name); |
| if (tooltip) g_free(tooltip); |
| if (unique_name) g_free(unique_name); |
| |
| g_printerr(__FILE__ ":%d: Failed to allocate enough memory for " |
| "the new menu item, dummier menu item in use.\n", __LINE__); |
| |
| // Can't return NULL neither a nautilus_menu_item_new(NULL,NULL,NULL,NULL) |
| ret = nautilus_menu_item_new("Fsymlink::allocation_error", |
| _("Follow symbolic _link"), |
| _("Open the symbolic link"), |
| FSL_ICON); |
| g_return_val_if_fail(NULL!=name && NULL!=tooltip && NULL!=unique_name, |
| ret); |
| } |
| |
| g_sprintf(name, fmt_name, base_name); |
| g_sprintf(tooltip, fmt_tooltip, a_base_name); |
| g_sprintf(unique_name, ITEM_NAME_FMT, a_base_name); |
| |
| // (name, label, tip, icon) |
| ret = nautilus_menu_item_new(unique_name, name, tooltip, FSL_ICON); |
| |
| if (base_name != a_base_name) { |
| g_free(base_name); |
| } |
| g_free(unique_name); |
| g_free(name); |
| g_free(tooltip); |
| |
| //g_object_set_data(G_OBJECT(ret), "FsymlinkExtension::screen", screen); |
| return ret; |
| } |
| |
| /*** Utility(-es) ***/ |
| |
| /* |
| * Wrapper for g_printf_string_upper_bound with a variadic signature |
| * |
| * Returns the maximum space needed to store the formatted string |
| */ |
| gsize printf_string_upper_bound(const gchar * format, ...) { |
| va_list ap; |
| va_start(ap, format); |
| |
| gsize retval = g_printf_string_upper_bound(format, ap); |
| |
| va_end(ap); |
| |
| return retval; |
| } |
| |
| /* vim:set ts=4 et ai: */ |
| Property changes: |
|---|
| Added: svn:keywords |
|---|
| +Rev Id Date |
|---|
| \ No newline at end of property |
|---|