initial

1 files changed, 1510 insertions, 0 deletions

diff --git a/src/eggdesktopfile.c b/src/eggdesktopfile.c
new file mode 100644
index 0000000..e38d867
--- /dev/null
+++ b/src/eggdesktopfile.c
@@ -0,0 +1,1510 @@
+/* eggdesktopfile.c - Freedesktop.Org Desktop Files
+ * Copyright (C) 2007 Novell, Inc.
+ *
+ * Based on mate-desktop-item.c
+ * Copyright (C) 1999, 2000 Red Hat Inc.
+ * Copyright (C) 2001 George Lebl
+ *
+ * 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 3 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; see the file COPYING.LIB. If not,
+ * write to the Free Software Foundation, Inc., 59 Temple Place -
+ * Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "eggdesktopfile.h"
+
+#include <string.h>
+#include <unistd.h>
+
+#include <glib/gi18n.h>
+#include <gdk/gdkx.h>
+#include <gtk/gtk.h>
+
+struct EggDesktopFile {
+  GKeyFile           *key_file;
+  char               *source;
+
+  char               *name, *icon;
+  EggDesktopFileType  type;
+  char                document_code;
+};
+
+/**
+ * egg_desktop_file_new:
+ * @desktop_file_path: path to a Freedesktop-style Desktop file
+ * @error: error pointer
+ *
+ * Creates a new #EggDesktopFile for @desktop_file.
+ *
+ * Return value: the new #EggDesktopFile, or %NULL on error.
+ **/
+EggDesktopFile *
+egg_desktop_file_new (const char *desktop_file_path, GError **error)
+{
+  GKeyFile *key_file;
+
+  key_file = g_key_file_new ();
+  if (!g_key_file_load_from_file (key_file, desktop_file_path, 0, error))
+    {
+      g_key_file_free (key_file);
+      return NULL;
+    }
+
+  return egg_desktop_file_new_from_key_file (key_file, desktop_file_path,
+					     error);
+}
+
+/**
+ * egg_desktop_file_new_from_data_dirs:
+ * @desktop_file_path: relative path to a Freedesktop-style Desktop file
+ * @error: error pointer
+ *
+ * Looks for @desktop_file_path in the paths returned from
+ * g_get_user_data_dir() and g_get_system_data_dirs(), and creates
+ * a new #EggDesktopFile from it.
+ *
+ * Return value: the new #EggDesktopFile, or %NULL on error.
+ **/
+EggDesktopFile *
+egg_desktop_file_new_from_data_dirs (const char  *desktop_file_path,
+				     GError     **error)
+{
+  EggDesktopFile *desktop_file;
+  GKeyFile *key_file;
+  char *full_path;
+
+  key_file = g_key_file_new ();
+  if (!g_key_file_load_from_data_dirs (key_file, desktop_file_path,
+				       &full_path, 0, error))
+    {
+      g_key_file_free (key_file);
+      return NULL;
+    }
+
+  desktop_file = egg_desktop_file_new_from_key_file (key_file,
+						     full_path,
+						     error);
+  g_free (full_path);
+  return desktop_file;
+}
+
+/**
+ * egg_desktop_file_new_from_dirs:
+ * @desktop_file_path: relative path to a Freedesktop-style Desktop file
+ * @search_dirs: NULL-terminated array of directories to search
+ * @error: error pointer
+ *
+ * Looks for @desktop_file_path in the paths returned from
+ * g_get_user_data_dir() and g_get_system_data_dirs(), and creates
+ * a new #EggDesktopFile from it.
+ *
+ * Return value: the new #EggDesktopFile, or %NULL on error.
+ **/
+EggDesktopFile *
+egg_desktop_file_new_from_dirs (const char  *desktop_file_path,
+				const char **search_dirs,
+				GError     **error)
+{
+  EggDesktopFile *desktop_file;
+  GKeyFile *key_file;
+  char *full_path;
+
+  key_file = g_key_file_new ();
+  if (!g_key_file_load_from_dirs (key_file, desktop_file_path, search_dirs,
+				  &full_path, 0, error))
+    {
+      g_key_file_free (key_file);
+      return NULL;
+    }
+
+  desktop_file = egg_desktop_file_new_from_key_file (key_file,
+						     full_path,
+						     error);
+  g_free (full_path);
+  return desktop_file;
+}
+
+/**
+ * egg_desktop_file_new_from_key_file:
+ * @key_file: a #GKeyFile representing a desktop file
+ * @source: the path or URI that @key_file was loaded from, or %NULL
+ * @error: error pointer
+ *
+ * Creates a new #EggDesktopFile for @key_file. Assumes ownership of
+ * @key_file (on success or failure); you should consider @key_file to
+ * be freed after calling this function.
+ *
+ * Return value: the new #EggDesktopFile, or %NULL on error.
+ **/
+EggDesktopFile *
+egg_desktop_file_new_from_key_file (GKeyFile    *key_file,
+				    const char  *source,
+				    GError     **error)
+{
+  EggDesktopFile *desktop_file;
+  char *version, *type;
+
+  if (!g_key_file_has_group (key_file, EGG_DESKTOP_FILE_GROUP))
+    {
+      g_set_error (error, EGG_DESKTOP_FILE_ERROR,
+		   EGG_DESKTOP_FILE_ERROR_INVALID,
+		   _("File is not a valid .desktop file"));
+      g_key_file_free (key_file);
+      return NULL;
+    }
+
+  version = g_key_file_get_value (key_file, EGG_DESKTOP_FILE_GROUP,
+				  EGG_DESKTOP_FILE_KEY_VERSION,
+				  NULL);
+  if (version)
+    {
+      double version_num;
+      char *end;
+
+      version_num = g_ascii_strtod (version, &end);
+      if (*end)
+	{
+	  g_warning ("Invalid Version string '%s' in %s",
+		     version, source ? source : "(unknown)");
+	}
+      else if (version_num > 1.0)
+	{
+	  g_set_error (error, EGG_DESKTOP_FILE_ERROR,
+		       EGG_DESKTOP_FILE_ERROR_INVALID,
+		       _("Unrecognized desktop file Version '%s'"), version);
+	  g_free (version);
+	  g_key_file_free (key_file);
+	  return NULL;
+	}
+      g_free (version);
+    }
+
+  desktop_file = g_new0 (EggDesktopFile, 1);
+  desktop_file->key_file = key_file;
+
+  if (g_path_is_absolute (source))
+    desktop_file->source = g_filename_to_uri (source, NULL, NULL);
+  else
+    desktop_file->source = g_strdup (source);
+
+  desktop_file->name = g_key_file_get_string (key_file, EGG_DESKTOP_FILE_GROUP,
+					      EGG_DESKTOP_FILE_KEY_NAME, error);
+  if (!desktop_file->name)
+    {
+      egg_desktop_file_free (desktop_file);
+      return NULL;
+    }
+
+  type = g_key_file_get_string (key_file, EGG_DESKTOP_FILE_GROUP,
+				EGG_DESKTOP_FILE_KEY_TYPE, error);
+  if (!type)
+    {
+      egg_desktop_file_free (desktop_file);
+      return NULL;
+    }
+
+  if (!strcmp (type, "Application"))
+    {
+      char *exec, *p;
+
+      desktop_file->type = EGG_DESKTOP_FILE_TYPE_APPLICATION;
+
+      exec = g_key_file_get_string (key_file,
+				    EGG_DESKTOP_FILE_GROUP,
+				    EGG_DESKTOP_FILE_KEY_EXEC,
+				    error);
+      if (!exec)
+	{
+	  egg_desktop_file_free (desktop_file);
+	  g_free (type);
+	  return NULL;
+	}
+
+      /* See if it takes paths or URIs or neither */
+      for (p = exec; *p; p++)
+	{
+	  if (*p == '%')
+	    {
+	      if (p[1] == '\0' || strchr ("FfUu", p[1]))
+		{
+		  desktop_file->document_code = p[1];
+		  break;
+		}
+	      p++;
+	    }
+	}
+
+      g_free (exec);
+    }
+  else if (!strcmp (type, "Link"))
+    {
+      char *url;
+
+      desktop_file->type = EGG_DESKTOP_FILE_TYPE_LINK;
+
+      url = g_key_file_get_string (key_file,
+				   EGG_DESKTOP_FILE_GROUP,
+				   EGG_DESKTOP_FILE_KEY_URL,
+				   error);
+      if (!url)
+	{
+	  egg_desktop_file_free (desktop_file);
+	  g_free (type);
+	  return NULL;
+	}
+      g_free (url);
+    }
+  else if (!strcmp (type, "Directory"))
+    desktop_file->type = EGG_DESKTOP_FILE_TYPE_DIRECTORY;
+  else
+    desktop_file->type = EGG_DESKTOP_FILE_TYPE_UNRECOGNIZED;
+
+  g_free (type);
+
+  /* Check the Icon key */
+  desktop_file->icon = g_key_file_get_string (key_file,
+					      EGG_DESKTOP_FILE_GROUP,
+					      EGG_DESKTOP_FILE_KEY_ICON,
+					      NULL);
+  if (desktop_file->icon && !g_path_is_absolute (desktop_file->icon))
+    {
+      char *ext;
+
+      /* Lots of .desktop files still get this wrong */
+      ext = strrchr (desktop_file->icon, '.');
+      if (ext && (!strcmp (ext, ".png") ||
+		  !strcmp (ext, ".xpm") ||
+		  !strcmp (ext, ".svg")))
+	{
+	  g_warning ("Desktop file '%s' has malformed Icon key '%s'"
+		     "(should not include extension)",
+		     source ? source : "(unknown)",
+		     desktop_file->icon);
+	  *ext = '\0';
+	}
+    }
+
+  return desktop_file;
+}
+
+/**
+ * egg_desktop_file_free:
+ * @desktop_file: an #EggDesktopFile
+ *
+ * Frees @desktop_file.
+ **/
+void
+egg_desktop_file_free (EggDesktopFile *desktop_file)
+{
+  g_key_file_free (desktop_file->key_file);
+  g_free (desktop_file->source);
+  g_free (desktop_file->name);
+  g_free (desktop_file->icon);
+  g_free (desktop_file);
+}
+
+/**
+ * egg_desktop_file_get_source:
+ * @desktop_file: an #EggDesktopFile
+ *
+ * Gets the URI that @desktop_file was loaded from.
+ *
+ * Return value: @desktop_file's source URI
+ **/
+const char *
+egg_desktop_file_get_source (EggDesktopFile *desktop_file)
+{
+  return desktop_file->source;
+}
+
+/**
+ * egg_desktop_file_get_desktop_file_type:
+ * @desktop_file: an #EggDesktopFile
+ *
+ * Gets the desktop file type of @desktop_file.
+ *
+ * Return value: @desktop_file's type
+ **/
+EggDesktopFileType
+egg_desktop_file_get_desktop_file_type (EggDesktopFile *desktop_file)
+{
+  return desktop_file->type;
+}
+
+/**
+ * egg_desktop_file_get_name:
+ * @desktop_file: an #EggDesktopFile
+ *
+ * Gets the (localized) value of @desktop_file's "Name" key.
+ *
+ * Return value: the application/link name
+ **/
+const char *
+egg_desktop_file_get_name (EggDesktopFile *desktop_file)
+{
+  return desktop_file->name;
+}
+
+/**
+ * egg_desktop_file_get_icon:
+ * @desktop_file: an #EggDesktopFile
+ *
+ * Gets the value of @desktop_file's "Icon" key.
+ *
+ * If the icon string is a full path (that is, if g_path_is_absolute()
+ * returns %TRUE when called on it), it points to a file containing an
+ * unthemed icon. If the icon string is not a full path, it is the
+ * name of a themed icon, which can be looked up with %GtkIconTheme,
+ * or passed directly to a theme-aware widget like %GtkImage or
+ * %GtkCellRendererPixbuf.
+ *
+ * Return value: the icon path or name
+ **/
+const char *
+egg_desktop_file_get_icon (EggDesktopFile *desktop_file)
+{
+  return desktop_file->icon;
+}
+
+gboolean
+egg_desktop_file_has_key (EggDesktopFile  *desktop_file,
+			  const char      *key,
+			  GError         **error)
+{
+  return g_key_file_has_key (desktop_file->key_file,
+			     EGG_DESKTOP_FILE_GROUP, key,
+			     error);
+}
+
+char *
+egg_desktop_file_get_string (EggDesktopFile  *desktop_file,
+			     const char      *key,
+			     GError         **error)
+{
+  return g_key_file_get_string (desktop_file->key_file,
+				EGG_DESKTOP_FILE_GROUP, key,
+				error);
+}
+
+char *
+egg_desktop_file_get_locale_string (EggDesktopFile  *desktop_file,
+				    const char      *key,
+				    const char      *locale,
+				    GError         **error)
+{
+  return g_key_file_get_locale_string (desktop_file->key_file,
+				       EGG_DESKTOP_FILE_GROUP, key, locale,
+				       error);
+}
+
+gboolean
+egg_desktop_file_get_boolean (EggDesktopFile  *desktop_file,
+			      const char      *key,
+			      GError         **error)
+{
+  return g_key_file_get_boolean (desktop_file->key_file,
+				 EGG_DESKTOP_FILE_GROUP, key,
+				 error);
+}
+
+double
+egg_desktop_file_get_numeric (EggDesktopFile  *desktop_file,
+			      const char      *key,
+			      GError         **error)
+{
+  return g_key_file_get_double (desktop_file->key_file,
+				EGG_DESKTOP_FILE_GROUP, key,
+				error);
+}
+
+char **
+egg_desktop_file_get_string_list (EggDesktopFile  *desktop_file,
+				  const char      *key,
+				  gsize           *length,
+				  GError         **error)
+{
+  return g_key_file_get_string_list (desktop_file->key_file,
+				     EGG_DESKTOP_FILE_GROUP, key, length,
+				     error);
+}
+
+char **
+egg_desktop_file_get_locale_string_list (EggDesktopFile  *desktop_file,
+					 const char      *key,
+					 const char      *locale,
+					 gsize           *length,
+					 GError         **error)
+{
+  return g_key_file_get_locale_string_list (desktop_file->key_file,
+					    EGG_DESKTOP_FILE_GROUP, key,
+					    locale, length,
+					    error);
+}
+
+/**
+ * egg_desktop_file_can_launch:
+ * @desktop_file: an #EggDesktopFile
+ * @desktop_environment: the name of the running desktop environment,
+ * or %NULL
+ *
+ * Tests if @desktop_file can/should be launched in the current
+ * environment. If @desktop_environment is non-%NULL, @desktop_file's
+ * "OnlyShowIn" and "NotShowIn" keys are checked to make sure that
+ * this desktop_file is appropriate for the named environment.
+ *
+ * Furthermore, if @desktop_file has type
+ * %EGG_DESKTOP_FILE_TYPE_APPLICATION, its "TryExec" key (if any) is
+ * also checked, to make sure the binary it points to exists.
+ *
+ * egg_desktop_file_can_launch() does NOT check the value of the
+ * "Hidden" key.
+ *
+ * Return value: %TRUE if @desktop_file can be launched
+ **/
+gboolean
+egg_desktop_file_can_launch (EggDesktopFile *desktop_file,
+			     const char     *desktop_environment)
+{
+  char *try_exec, *found_program;
+  char **only_show_in, **not_show_in;
+  gboolean found;
+  int i;
+
+  if (desktop_file->type != EGG_DESKTOP_FILE_TYPE_APPLICATION &&
+      desktop_file->type != EGG_DESKTOP_FILE_TYPE_LINK)
+    return FALSE;
+
+  if (desktop_environment)
+    {
+      only_show_in = g_key_file_get_string_list (desktop_file->key_file,
+						 EGG_DESKTOP_FILE_GROUP,
+						 EGG_DESKTOP_FILE_KEY_ONLY_SHOW_IN,
+						 NULL, NULL);
+      if (only_show_in)
+	{
+	  for (i = 0, found = FALSE; only_show_in[i] && !found; i++)
+	    {
+	      if (!strcmp (only_show_in[i], desktop_environment))
+		found = TRUE;
+	    }
+
+	  g_strfreev (only_show_in);
+
+	  if (!found)
+	    return FALSE;
+	}
+
+      not_show_in = g_key_file_get_string_list (desktop_file->key_file,
+						EGG_DESKTOP_FILE_GROUP,
+						EGG_DESKTOP_FILE_KEY_NOT_SHOW_IN,
+						NULL, NULL);
+      if (not_show_in)
+	{
+	  for (i = 0, found = FALSE; not_show_in[i] && !found; i++)
+	    {
+	      if (!strcmp (not_show_in[i], desktop_environment))
+		found = TRUE;
+	    }
+
+	  g_strfreev (not_show_in);
+
+	  if (found)
+	    return FALSE;
+	}
+    }
+
+  if (desktop_file->type == EGG_DESKTOP_FILE_TYPE_APPLICATION)
+    {
+      try_exec = g_key_file_get_string (desktop_file->key_file,
+					EGG_DESKTOP_FILE_GROUP,
+					EGG_DESKTOP_FILE_KEY_TRY_EXEC,
+					NULL);
+      if (try_exec)
+	{
+	  found_program = g_find_program_in_path (try_exec);
+	  g_free (try_exec);
+
+	  if (!found_program)
+	    return FALSE;
+	  g_free (found_program);
+	}
+    }
+
+  return TRUE;
+}
+
+/**
+ * egg_desktop_file_accepts_documents:
+ * @desktop_file: an #EggDesktopFile
+ *
+ * Tests if @desktop_file represents an application that can accept
+ * documents on the command line.
+ *
+ * Return value: %TRUE or %FALSE
+ **/
+gboolean
+egg_desktop_file_accepts_documents (EggDesktopFile *desktop_file)
+{
+  return desktop_file->document_code != 0;
+}
+
+/**
+ * egg_desktop_file_accepts_multiple:
+ * @desktop_file: an #EggDesktopFile
+ *
+ * Tests if @desktop_file can accept multiple documents at once.
+ *
+ * If this returns %FALSE, you can still pass multiple documents to
+ * egg_desktop_file_launch(), but that will result in multiple copies
+ * of the application being launched. See egg_desktop_file_launch()
+ * for more details.
+ *
+ * Return value: %TRUE or %FALSE
+ **/
+gboolean
+egg_desktop_file_accepts_multiple (EggDesktopFile *desktop_file)
+{
+  return (desktop_file->document_code == 'F' ||
+	  desktop_file->document_code == 'U');
+}
+
+/**
+ * egg_desktop_file_accepts_uris:
+ * @desktop_file: an #EggDesktopFile
+ *
+ * Tests if @desktop_file can accept (non-"file:") URIs as documents to
+ * open.
+ *
+ * Return value: %TRUE or %FALSE
+ **/
+gboolean
+egg_desktop_file_accepts_uris (EggDesktopFile *desktop_file)
+{
+  return (desktop_file->document_code == 'U' ||
+	  desktop_file->document_code == 'u');
+}
+
+static void
+append_quoted_word (GString    *str,
+		    const char *s,
+		    gboolean    in_single_quotes,
+		    gboolean    in_double_quotes)
+{
+  const char *p;
+
+  if (!in_single_quotes && !in_double_quotes)
+    g_string_append_c (str, '\'');
+  else if (!in_single_quotes && in_double_quotes)
+    g_string_append (str, "\"'");
+
+  if (!strchr (s, '\''))
+    g_string_append (str, s);
+  else
+    {
+      for (p = s; *p != '\0'; p++)
+	{
+	  if (*p == '\'')
+	    g_string_append (str, "'\\''");
+	  else
+	    g_string_append_c (str, *p);
+	}
+    }
+
+  if (!in_single_quotes && !in_double_quotes)
+    g_string_append_c (str, '\'');
+  else if (!in_single_quotes && in_double_quotes)
+    g_string_append (str, "'\"");
+}
+
+static void
+do_percent_subst (EggDesktopFile *desktop_file,
+		  char            code,
+		  GString        *str,
+		  GSList        **documents,
+		  gboolean        in_single_quotes,
+		  gboolean        in_double_quotes)
+{
+  GSList *d;
+  char *doc;
+
+  switch (code)
+    {
+    case '%':
+      g_string_append_c (str, '%');
+      break;
+
+    case 'F':
+    case 'U':
+      for (d = *documents; d; d = d->next)
+	{
+	  doc = d->data;
+	  g_string_append (str, " ");
+	  append_quoted_word (str, doc, in_single_quotes, in_double_quotes);
+	}
+      *documents = NULL;
+      break;
+
+    case 'f':
+    case 'u':
+      if (*documents)
+	{
+	  doc = (*documents)->data;
+	  g_string_append (str, " ");
+	  append_quoted_word (str, doc, in_single_quotes, in_double_quotes);
+	  *documents = (*documents)->next;
+	}
+      break;
+
+    case 'i':
+      if (desktop_file->icon)
+	{
+	  g_string_append (str, "--icon ");
+	  append_quoted_word (str, desktop_file->icon,
+			      in_single_quotes, in_double_quotes);
+	}
+      break;
+
+    case 'c':
+      if (desktop_file->name)
+	{
+	  append_quoted_word (str, desktop_file->name,
+			      in_single_quotes, in_double_quotes);
+	}
+      break;
+
+    case 'k':
+      if (desktop_file->source)
+	{
+	  append_quoted_word (str, desktop_file->source,
+			      in_single_quotes, in_double_quotes);
+	}
+      break;
+
+    case 'D':
+    case 'N':
+    case 'd':
+    case 'n':
+    case 'v':
+    case 'm':
+      /* Deprecated; skip */
+      break;
+
+    default:
+      g_warning ("Unrecognized %%-code '%%%c' in Exec", code);
+      break;
+    }
+}
+
+static char *
+parse_exec (EggDesktopFile  *desktop_file,
+	    GSList         **documents,
+	    GError         **error)
+{
+  char *exec, *p, *command;
+  gboolean escape, single_quot, double_quot;
+  GString *gs;
+
+  exec = g_key_file_get_string (desktop_file->key_file,
+				EGG_DESKTOP_FILE_GROUP,
+				EGG_DESKTOP_FILE_KEY_EXEC,
+				error);
+  if (!exec)
+    return NULL;
+
+  /* Build the command */
+  gs = g_string_new (NULL);
+  escape = single_quot = double_quot = FALSE;
+
+  for (p = exec; *p != '\0'; p++)
+    {
+      if (escape)
+	{
+	  escape = FALSE;
+	  g_string_append_c (gs, *p);
+	}
+      else if (*p == '\\')
+	{
+	  if (!single_quot)
+	    escape = TRUE;
+	  g_string_append_c (gs, *p);
+	}
+      else if (*p == '\'')
+	{
+	  g_string_append_c (gs, *p);
+	  if (!single_quot && !double_quot)
+	    single_quot = TRUE;
+	  else if (single_quot)
+	    single_quot = FALSE;
+	}
+      else if (*p == '"')
+	{
+	  g_string_append_c (gs, *p);
+	  if (!single_quot && !double_quot)
+	    double_quot = TRUE;
+	  else if (double_quot)
+	    double_quot = FALSE;
+	}
+      else if (*p == '%' && p[1])
+	{
+	  do_percent_subst (desktop_file, p[1], gs, documents,
+			    single_quot, double_quot);
+	  p++;
+	}
+      else
+	g_string_append_c (gs, *p);
+    }
+
+  g_free (exec);
+  command = g_string_free (gs, FALSE);
+
+  /* Prepend "xdg-terminal " if needed (FIXME: use gvfs) */
+  if (g_key_file_has_key (desktop_file->key_file,
+			  EGG_DESKTOP_FILE_GROUP,
+			  EGG_DESKTOP_FILE_KEY_TERMINAL,
+			  NULL))
+    {
+      GError *terminal_error = NULL;
+      gboolean use_terminal =
+	g_key_file_get_boolean (desktop_file->key_file,
+				EGG_DESKTOP_FILE_GROUP,
+				EGG_DESKTOP_FILE_KEY_TERMINAL,
+				&terminal_error);
+      if (terminal_error)
+	{
+	  g_free (command);
+	  g_propagate_error (error, terminal_error);
+	  return NULL;
+	}
+
+      if (use_terminal)
+	{
+	  gs = g_string_new ("xdg-terminal ");
+	  append_quoted_word (gs, command, FALSE, FALSE);
+	  g_free (command);
+	  command = g_string_free (gs, FALSE);
+	}
+    }
+
+  return command;
+}
+
+static GSList *
+translate_document_list (EggDesktopFile *desktop_file, GSList *documents)
+{
+  gboolean accepts_uris = egg_desktop_file_accepts_uris (desktop_file);
+  GSList *ret, *d;
+
+  for (d = documents, ret = NULL; d; d = d->next)
+    {
+      const char *document = d->data;
+      gboolean is_uri = !g_path_is_absolute (document);
+      char *translated;
+
+      if (accepts_uris)
+	{
+	  if (is_uri)
+	    translated = g_strdup (document);
+	  else
+	    translated = g_filename_to_uri (document, NULL, NULL);
+	}
+      else
+	{
+	  if (is_uri)
+	    translated = g_filename_from_uri (document, NULL, NULL);
+	  else
+	    translated = g_strdup (document);
+	}
+
+      if (translated)
+	ret = g_slist_prepend (ret, translated);
+    }
+
+  return g_slist_reverse (ret);
+}
+
+static void
+free_document_list (GSList *documents)
+{
+  GSList *d;
+
+  for (d = documents; d; d = d->next)
+    g_free (d->data);
+  g_slist_free (documents);
+}
+
+/**
+ * egg_desktop_file_parse_exec:
+ * @desktop_file: a #EggDesktopFile
+ * @documents: a list of document paths or URIs
+ * @error: error pointer
+ *
+ * Parses @desktop_file's Exec key, inserting @documents into it, and
+ * returns the result.
+ *
+ * If @documents contains non-file: URIs and @desktop_file does not
+ * accept URIs, those URIs will be ignored. Likewise, if @documents
+ * contains more elements than @desktop_file accepts, the extra
+ * documents will be ignored.
+ *
+ * Return value: the parsed Exec string
+ **/
+char *
+egg_desktop_file_parse_exec (EggDesktopFile  *desktop_file,
+			     GSList          *documents,
+			     GError         **error)
+{
+  GSList *translated, *docs;
+  char *command;
+
+  docs = translated = translate_document_list (desktop_file, documents);
+  command = parse_exec (desktop_file, &docs, error);
+  free_document_list (translated);
+
+  return command;
+}
+
+static gboolean
+parse_link (EggDesktopFile  *desktop_file,
+	    EggDesktopFile **app_desktop_file,
+	    GSList         **documents,
+	    GError         **error)
+{
+  char *url;
+  GKeyFile *key_file;
+
+  url = g_key_file_get_string (desktop_file->key_file,
+			       EGG_DESKTOP_FILE_GROUP,
+			       EGG_DESKTOP_FILE_KEY_URL,
+			       error);
+  if (!url)
+    return FALSE;
+  *documents = g_slist_prepend (NULL, url);
+
+  /* FIXME: use gvfs */
+  key_file = g_key_file_new ();
+  g_key_file_set_string (key_file, EGG_DESKTOP_FILE_GROUP,
+			 EGG_DESKTOP_FILE_KEY_NAME,
+			 "xdg-open");
+  g_key_file_set_string (key_file, EGG_DESKTOP_FILE_GROUP,
+			 EGG_DESKTOP_FILE_KEY_TYPE,
+			 "Application");
+  g_key_file_set_string (key_file, EGG_DESKTOP_FILE_GROUP,
+			 EGG_DESKTOP_FILE_KEY_EXEC,
+			 "xdg-open %u");
+  *app_desktop_file = egg_desktop_file_new_from_key_file (key_file, NULL, NULL);
+  return TRUE;
+}
+
+#if GTK_CHECK_VERSION (2, 12, 0)
+static char *
+start_startup_notification (GdkDisplay     *display,
+			    EggDesktopFile *desktop_file,
+			    const char     *argv0,
+			    int             screen,
+			    int             workspace,
+			    guint32         launch_time)
+{
+  static int sequence = 0;
+  char *startup_id;
+  char *description, *wmclass;
+  char *screen_str, *workspace_str;
+
+  if (g_key_file_has_key (desktop_file->key_file,
+			  EGG_DESKTOP_FILE_GROUP,
+			  EGG_DESKTOP_FILE_KEY_STARTUP_NOTIFY,
+			  NULL))
+    {
+      if (!g_key_file_get_boolean (desktop_file->key_file,
+				   EGG_DESKTOP_FILE_GROUP,
+				   EGG_DESKTOP_FILE_KEY_STARTUP_NOTIFY,
+				   NULL))
+	return NULL;
+      wmclass = NULL;
+    }
+  else
+    {
+      wmclass = g_key_file_get_string (desktop_file->key_file,
+				       EGG_DESKTOP_FILE_GROUP,
+				       EGG_DESKTOP_FILE_KEY_STARTUP_WM_CLASS,
+				       NULL);
+      if (!wmclass)
+	return NULL;
+    }
+
+  if (launch_time == (guint32)-1)
+    launch_time = gdk_x11_display_get_user_time (display);
+  startup_id = g_strdup_printf ("%s-%lu-%s-%s-%d_TIME%lu",
+				g_get_prgname (),
+				(unsigned long)getpid (),
+				g_get_host_name (),
+				argv0,
+				sequence++,
+				(unsigned long)launch_time);
+
+  description = g_strdup_printf (_("Starting %s"), desktop_file->name);
+  screen_str = g_strdup_printf ("%d", screen);
+  workspace_str = workspace == -1 ? NULL : g_strdup_printf ("%d", workspace);
+
+  gdk_x11_display_broadcast_startup_message (display, "new",
+					     "ID", startup_id,
+					     "NAME", desktop_file->name,
+					     "SCREEN", screen_str,
+					     "BIN", argv0,
+					     "ICON", desktop_file->icon,
+					     "DESKTOP", workspace_str,
+					     "DESCRIPTION", description,
+					     "WMCLASS", wmclass,
+					     NULL);
+
+  g_free (description);
+  g_free (wmclass);
+  g_free (screen_str);
+  g_free (workspace_str);
+
+  return startup_id;
+}
+
+static void
+end_startup_notification (GdkDisplay *display,
+			  const char *startup_id)
+{
+  gdk_x11_display_broadcast_startup_message (display, "remove",
+					     "ID", startup_id,
+					     NULL);
+}
+
+#define EGG_DESKTOP_FILE_SN_TIMEOUT_LENGTH (30 /* seconds */)
+
+typedef struct {
+  GdkDisplay *display;
+  char *startup_id;
+} StartupNotificationData;
+
+static gboolean
+startup_notification_timeout (gpointer data)
+{
+  StartupNotificationData *sn_data = data;
+
+  end_startup_notification (sn_data->display, sn_data->startup_id);
+  g_object_unref (sn_data->display);
+  g_free (sn_data->startup_id);
+  g_free (sn_data);
+
+  return FALSE;
+}
+
+static void
+set_startup_notification_timeout (GdkDisplay *display,
+				  const char *startup_id)
+{
+  StartupNotificationData *sn_data;
+
+  sn_data = g_new (StartupNotificationData, 1);
+  sn_data->display = g_object_ref (display);
+  sn_data->startup_id = g_strdup (startup_id);
+
+  g_timeout_add_seconds (EGG_DESKTOP_FILE_SN_TIMEOUT_LENGTH,
+			 startup_notification_timeout, sn_data);
+}
+#endif /* GTK 2.12 */
+
+static GPtrArray *
+array_putenv (GPtrArray *env, char *variable)
+{
+  guint i, keylen;
+
+  if (!env)
+    {
+      char **envp;
+
+      env = g_ptr_array_new ();
+
+      envp = g_listenv ();
+      for (i = 0; envp[i]; i++)
+        {
+          const char *value;
+
+          value = g_getenv (envp[i]);
+          g_ptr_array_add (env, g_strdup_printf ("%s=%s", envp[i],
+                                                 value ? value : ""));
+        }
+      g_strfreev (envp);
+    }
+
+  keylen = strcspn (variable, "=");
+
+  /* Remove old value of key */
+  for (i = 0; i < env->len; i++)
+    {
+      char *envvar = env->pdata[i];
+
+      if (!strncmp (envvar, variable, keylen) && envvar[keylen] == '=')
+	{
+	  g_free (envvar);
+	  g_ptr_array_remove_index_fast (env, i);
+	  break;
+	}
+    }
+
+  /* Add new value */
+  g_ptr_array_add (env, g_strdup (variable));
+
+  return env;
+}
+
+static gboolean
+egg_desktop_file_launchv (EggDesktopFile *desktop_file,
+			  GSList *documents, va_list args,
+			  GError **error)
+{
+  EggDesktopFileLaunchOption option;
+  GSList *translated_documents = NULL, *docs = NULL;
+  char *command, **argv;
+  int argc, i, screen_num;
+  gboolean success, current_success;
+  GdkDisplay *display;
+  char *startup_id;
+
+  GPtrArray   *env = NULL;
+  char       **variables = NULL;
+  GdkScreen   *screen = NULL;
+  int          workspace = -1;
+  const char  *directory = NULL;
+  guint32      launch_time = (guint32)-1;
+  GSpawnFlags  flags = G_SPAWN_SEARCH_PATH;
+  GSpawnChildSetupFunc setup_func = NULL;
+  gpointer     setup_data = NULL;
+
+  GPid        *ret_pid = NULL;
+  int         *ret_stdin = NULL, *ret_stdout = NULL, *ret_stderr = NULL;
+  char       **ret_startup_id = NULL;
+
+  if (documents && desktop_file->document_code == 0)
+    {
+      g_set_error (error, EGG_DESKTOP_FILE_ERROR,
+		   EGG_DESKTOP_FILE_ERROR_NOT_LAUNCHABLE,
+		   _("Application does not accept documents on command line"));
+      return FALSE;
+    }
+
+  /* Read the options: technically it's incorrect for the caller to
+   * NULL-terminate the list of options (rather than 0-terminating
+   * it), but NULL-terminating lets us use G_GNUC_NULL_TERMINATED,
+   * it's more consistent with other glib/gtk methods, and it will
+   * work as long as sizeof (int) <= sizeof (NULL), and NULL is
+   * represented as 0. (Which is true everywhere we care about.)
+   */
+  while ((option = va_arg (args, EggDesktopFileLaunchOption)))
+    {
+      switch (option)
+	{
+	case EGG_DESKTOP_FILE_LAUNCH_CLEARENV:
+	  if (env)
+	    g_ptr_array_free (env, TRUE);
+	  env = g_ptr_array_new ();
+	  break;
+	case EGG_DESKTOP_FILE_LAUNCH_PUTENV:
+	  variables = va_arg (args, char **);
+	  for (i = 0; variables[i]; i++)
+	    env = array_putenv (env, variables[i]);
+	  break;
+
+	case EGG_DESKTOP_FILE_LAUNCH_SCREEN:
+	  screen = va_arg (args, GdkScreen *);
+	  break;
+	case EGG_DESKTOP_FILE_LAUNCH_WORKSPACE:
+	  workspace = va_arg (args, int);
+	  break;
+
+	case EGG_DESKTOP_FILE_LAUNCH_DIRECTORY:
+	  directory = va_arg (args, const char *);
+	  break;
+	case EGG_DESKTOP_FILE_LAUNCH_TIME:
+	  launch_time = va_arg (args, guint32);
+	  break;
+	case EGG_DESKTOP_FILE_LAUNCH_FLAGS:
+	  flags |= va_arg (args, GSpawnFlags);
+	  /* Make sure they didn't set any flags that don't make sense. */
+	  flags &= ~G_SPAWN_FILE_AND_ARGV_ZERO;
+	  break;
+	case EGG_DESKTOP_FILE_LAUNCH_SETUP_FUNC:
+	  setup_func = va_arg (args, GSpawnChildSetupFunc);
+	  setup_data = va_arg (args, gpointer);
+	  break;
+
+	case EGG_DESKTOP_FILE_LAUNCH_RETURN_PID:
+	  ret_pid = va_arg (args, GPid *);
+	  break;
+	case EGG_DESKTOP_FILE_LAUNCH_RETURN_STDIN_PIPE:
+	  ret_stdin = va_arg (args, int *);
+	  break;
+	case EGG_DESKTOP_FILE_LAUNCH_RETURN_STDOUT_PIPE:
+	  ret_stdout = va_arg (args, int *);
+	  break;
+	case EGG_DESKTOP_FILE_LAUNCH_RETURN_STDERR_PIPE:
+	  ret_stderr = va_arg (args, int *);
+	  break;
+	case EGG_DESKTOP_FILE_LAUNCH_RETURN_STARTUP_ID:
+	  ret_startup_id = va_arg (args, char **);
+	  break;
+
+	default:
+	  g_set_error (error, EGG_DESKTOP_FILE_ERROR,
+		       EGG_DESKTOP_FILE_ERROR_UNRECOGNIZED_OPTION,
+		       _("Unrecognized launch option: %d"),
+		       GPOINTER_TO_INT (option));
+	  success = FALSE;
+	  goto out;
+	}
+    }
+
+  if (screen)
+    {
+      char *display_name = gdk_screen_make_display_name (screen);
+      char *display_env = g_strdup_printf ("DISPLAY=%s", display_name);
+      env = array_putenv (env, display_env);
+      g_free (display_name);
+      g_free (display_env);
+
+      display = gdk_screen_get_display (screen);
+    }
+  else
+    {
+      display = gdk_display_get_default ();
+      screen = gdk_display_get_default_screen (display);
+    }
+  screen_num = gdk_screen_get_number (screen);
+
+  translated_documents = translate_document_list (desktop_file, documents);
+  docs = translated_documents;
+
+  success = FALSE;
+
+  do
+    {
+      command = parse_exec (desktop_file, &docs, error);
+      if (!command)
+	goto out;
+
+      if (!g_shell_parse_argv (command, &argc, &argv, error))
+	{
+	  g_free (command);
+	  goto out;
+	}
+      g_free (command);
+
+#if GTK_CHECK_VERSION (2, 12, 0)
+      startup_id = start_startup_notification (display, desktop_file,
+					       argv[0], screen_num,
+					       workspace, launch_time);
+      if (startup_id)
+	{
+	  char *startup_id_env = g_strdup_printf ("DESKTOP_STARTUP_ID=%s",
+						  startup_id);
+	  env = array_putenv (env, startup_id_env);
+	  g_free (startup_id_env);
+	}
+#else
+      startup_id = NULL;
+#endif /* GTK 2.12 */
+
+      if (env != NULL)
+	g_ptr_array_add (env, NULL);
+
+      current_success =
+	g_spawn_async_with_pipes (directory,
+				  argv,
+				  env ? (char **)(env->pdata) : NULL,
+				  flags,
+				  setup_func, setup_data,
+				  ret_pid,
+				  ret_stdin, ret_stdout, ret_stderr,
+				  error);
+      g_strfreev (argv);
+
+      if (startup_id)
+	{
+#if GTK_CHECK_VERSION (2, 12, 0)
+	  if (current_success)
+	    {
+	      set_startup_notification_timeout (display, startup_id);
+
+	      if (ret_startup_id)
+		*ret_startup_id = startup_id;
+	      else
+		g_free (startup_id);
+	    }
+	  else
+#endif /* GTK 2.12 */
+	    g_free (startup_id);
+	}
+      else if (ret_startup_id)
+	*ret_startup_id = NULL;
+
+      if (current_success)
+	{
+	  /* If we successfully launch any instances of the app, make
+	   * sure we return TRUE and don't set @error.
+	   */
+	  success = TRUE;
+	  error = NULL;
+
+	  /* Also, only set the output params on the first one */
+	  ret_pid = NULL;
+	  ret_stdin = ret_stdout = ret_stderr = NULL;
+	  ret_startup_id = NULL;
+	}
+    }
+  while (docs && current_success);
+
+ out:
+  if (env)
+    {
+      g_ptr_array_foreach (env, (GFunc)g_free, NULL);
+      g_ptr_array_free (env, TRUE);
+    }
+  free_document_list (translated_documents);
+
+  return success;
+}
+
+/**
+ * egg_desktop_file_launch:
+ * @desktop_file: an #EggDesktopFile
+ * @documents: a list of URIs or paths to documents to open
+ * @error: error pointer
+ * @...: additional options
+ *
+ * Launches @desktop_file with the given arguments. Additional options
+ * can be specified as follows:
+ *
+ *   %EGG_DESKTOP_FILE_LAUNCH_CLEARENV: (no arguments)
+ *       clears the environment in the child process
+ *   %EGG_DESKTOP_FILE_LAUNCH_PUTENV: (char **variables)
+ *       adds the NAME=VALUE strings in the given %NULL-terminated
+ *       array to the child process's environment
+ *   %EGG_DESKTOP_FILE_LAUNCH_SCREEN: (GdkScreen *screen)
+ *       causes the application to be launched on the given screen
+ *   %EGG_DESKTOP_FILE_LAUNCH_WORKSPACE: (int workspace)
+ *       causes the application to be launched on the given workspace
+ *   %EGG_DESKTOP_FILE_LAUNCH_DIRECTORY: (char *dir)
+ *       causes the application to be launched in the given directory
+ *   %EGG_DESKTOP_FILE_LAUNCH_TIME: (guint32 launch_time)
+ *       sets the "launch time" for the application. If the user
+ *       interacts with another window after @launch_time but before
+ *       the launched application creates its first window, the window
+ *       manager may choose to not give focus to the new application.
+ *       Passing 0 for @launch_time will explicitly request that the
+ *       application not receive focus.
+ *   %EGG_DESKTOP_FILE_LAUNCH_FLAGS (GSpawnFlags flags)
+ *       Sets additional #GSpawnFlags to use. See g_spawn_async() for
+ *       more details.
+ *   %EGG_DESKTOP_FILE_LAUNCH_SETUP_FUNC (GSpawnChildSetupFunc, gpointer)
+ *       Sets the child setup callback and the data to pass to it.
+ *       (See g_spawn_async() for more details.)
+ *
+ *   %EGG_DESKTOP_FILE_LAUNCH_RETURN_PID (GPid **pid)
+ *       On a successful launch, sets *@pid to the PID of the launched
+ *       application.
+ *   %EGG_DESKTOP_FILE_LAUNCH_RETURN_STARTUP_ID (char **startup_id)
+ *       On a successful launch, sets *@startup_id to the Startup
+ *       Notification "startup id" of the launched application.
+ *   %EGG_DESKTOP_FILE_LAUNCH_RETURN_STDIN_PIPE (int *fd)
+ *       On a successful launch, sets *@fd to the file descriptor of
+ *       a pipe connected to the application's stdin.
+ *   %EGG_DESKTOP_FILE_LAUNCH_RETURN_STDOUT_PIPE (int *fd)
+ *       On a successful launch, sets *@fd to the file descriptor of
+ *       a pipe connected to the application's stdout.
+ *   %EGG_DESKTOP_FILE_LAUNCH_RETURN_STDERR_PIPE (int *fd)
+ *       On a successful launch, sets *@fd to the file descriptor of
+ *       a pipe connected to the application's stderr.
+ *
+ * The options should be terminated with a single %NULL.
+ *
+ * If @documents contains multiple documents, but
+ * egg_desktop_file_accepts_multiple() returns %FALSE for
+ * @desktop_file, then egg_desktop_file_launch() will actually launch
+ * multiple instances of the application. In that case, the return
+ * value (as well as any values passed via
+ * %EGG_DESKTOP_FILE_LAUNCH_RETURN_PID, etc) will only reflect the
+ * first instance of the application that was launched (but the
+ * %EGG_DESKTOP_FILE_LAUNCH_SETUP_FUNC will be called for each
+ * instance).
+ *
+ * Return value: %TRUE if the application was successfully launched.
+ **/
+gboolean
+egg_desktop_file_launch (EggDesktopFile *desktop_file,
+			 GSList *documents, GError **error,
+			 ...)
+{
+  va_list args;
+  gboolean success;
+  EggDesktopFile *app_desktop_file;
+
+  switch (desktop_file->type)
+    {
+    case EGG_DESKTOP_FILE_TYPE_APPLICATION:
+      va_start (args, error);
+      success = egg_desktop_file_launchv (desktop_file, documents,
+					  args, error);
+      va_end (args);
+      break;
+
+    case EGG_DESKTOP_FILE_TYPE_LINK:
+      if (documents)
+	{
+	  g_set_error (error, EGG_DESKTOP_FILE_ERROR,
+		       EGG_DESKTOP_FILE_ERROR_NOT_LAUNCHABLE,
+		       _("Can't pass document URIs to a 'Type=Link' desktop entry"));
+	  return FALSE;
+	}	  
+
+      if (!parse_link (desktop_file, &app_desktop_file, &documents, error))
+	return FALSE;
+
+      va_start (args, error);
+      success = egg_desktop_file_launchv (app_desktop_file, documents,
+					  args, error);
+      va_end (args);
+
+      egg_desktop_file_free (app_desktop_file);
+      free_document_list (documents);
+      break;
+
+    case EGG_DESKTOP_FILE_TYPE_UNRECOGNIZED:
+    case EGG_DESKTOP_FILE_TYPE_DIRECTORY:
+    default:
+      g_set_error (error, EGG_DESKTOP_FILE_ERROR,
+		   EGG_DESKTOP_FILE_ERROR_NOT_LAUNCHABLE,
+		   _("Not a launchable item"));
+      success = FALSE;
+      break;
+    }
+
+  return success;
+}
+
+
+GQuark
+egg_desktop_file_error_quark (void)
+{
+  return g_quark_from_static_string ("egg-desktop_file-error-quark");
+}
+
+
+G_LOCK_DEFINE_STATIC (egg_desktop_file);
+static EggDesktopFile *egg_desktop_file;
+
+static void
+egg_set_desktop_file_internal (const char *desktop_file_path,
+                               gboolean set_defaults)
+{
+  GError *error = NULL;
+
+  G_LOCK (egg_desktop_file);
+  if (egg_desktop_file)
+    egg_desktop_file_free (egg_desktop_file);
+
+  egg_desktop_file = egg_desktop_file_new (desktop_file_path, &error);
+  if (error)
+    {
+      g_warning ("Could not load desktop file '%s': %s",
+		 desktop_file_path, error->message);
+      g_error_free (error);
+    }
+
+  if (set_defaults && egg_desktop_file != NULL) {
+    /* Set localized application name and default window icon */
+    if (egg_desktop_file->name)
+      g_set_application_name (egg_desktop_file->name);
+    if (egg_desktop_file->icon)
+      {
+        if (g_path_is_absolute (egg_desktop_file->icon))
+          gtk_window_set_default_icon_from_file (egg_desktop_file->icon, NULL);
+        else
+          gtk_window_set_default_icon_name (egg_desktop_file->icon);
+      }
+  }
+
+  G_UNLOCK (egg_desktop_file);
+}
+
+/**
+ * egg_set_desktop_file:
+ * @desktop_file_path: path to the application's desktop file
+ *
+ * Creates an #EggDesktopFile for the application from the data at
+ * @desktop_file_path. This will also call g_set_application_name()
+ * with the localized application name from the desktop file, and
+ * gtk_window_set_default_icon_name() or
+ * gtk_window_set_default_icon_from_file() with the application's
+ * icon. Other code may use additional information from the desktop
+ * file.
+ * See egg_set_desktop_file_without_defaults() for a variant of this
+ * function that does not set the application name and default window
+ * icon.
+ *
+ * Note that for thread safety reasons, this function can only
+ * be called once, and is mutually exclusive with calling
+ * egg_set_desktop_file_without_defaults().
+ **/
+void
+egg_set_desktop_file (const char *desktop_file_path)
+{
+  egg_set_desktop_file_internal (desktop_file_path, TRUE);
+}
+
+/**
+ * egg_set_desktop_file_without_defaults:
+ * @desktop_file_path: path to the application's desktop file
+ *
+ * Creates an #EggDesktopFile for the application from the data at
+ * @desktop_file_path.
+ * See egg_set_desktop_file() for a variant of this function that
+ * sets the application name and default window icon from the information
+ * in the desktop file.
+ *
+ * Note that for thread safety reasons, this function can only
+ * be called once, and is mutually exclusive with calling
+ * egg_set_desktop_file().
+ **/
+void
+egg_set_desktop_file_without_defaults (const char *desktop_file_path)
+{
+  egg_set_desktop_file_internal (desktop_file_path, FALSE);
+}
+
+/**
+ * egg_get_desktop_file:
+ * 
+ * Gets the application's #EggDesktopFile, as set by
+ * egg_set_desktop_file().
+ * 
+ * Return value: the #EggDesktopFile, or %NULL if it hasn't been set.
+ **/
+EggDesktopFile *
+egg_get_desktop_file (void)
+{
+  EggDesktopFile *retval;
+
+  G_LOCK (egg_desktop_file);
+  retval = egg_desktop_file;
+  G_UNLOCK (egg_desktop_file);
+
+  return retval;
+}