0,0 → 1,290 |
/* $Id$ |
* |
* 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 * 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'"); |
} |
|
// 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, base_name) ); |
unique_name = g_try_malloc( printf_string_upper_bound(ITEM_NAME_FMT, 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, base_name); |
g_sprintf(unique_name, ITEM_NAME_FMT, base_name); |
|
// (name, label, tip, icon) |
ret = nautilus_menu_item_new(unique_name, name, tooltip, FSL_ICON); |
|
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 |