[nautilus] nautilus-link: fix XDG_CURRENT_DESKTOP usage

[Alberts Muktupāvels <muktupavels src gnome org>]

commit 8898cbf9491935e69d734bd3ca4beb17739ea7be
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Sat Jan 16 13:20:54 2016 +0200

    nautilus-link: fix XDG_CURRENT_DESKTOP usage
    
    These days XDG_CURRENT_DESKTOP can contain multiple desktop names
    seperated by ':'.

 libnautilus-private/nautilus-link.c |   39 +++++++++++++++++++---------------
 1 files changed, 22 insertions(+), 17 deletions(-)
---
diff --git a/libnautilus-private/nautilus-link.c b/libnautilus-private/nautilus-link.c
index 4b563d8..30f2217 100644
--- a/libnautilus-private/nautilus-link.c
+++ b/libnautilus-private/nautilus-link.c
@@ -504,35 +504,38 @@ nautilus_link_local_get_link_uri (const char *uri)
 }
 
 static gboolean
-string_array_contains (char **array,
-                      const char *str)
+string_array_contains (gchar **array,
+                       gchar **desktop_names)
 {
-       char **p;
+       gchar **p;
+       gchar **desktop;
 
        if (!array)
                return FALSE;
 
-       for (p = array; *p; p++)
-               if (g_ascii_strcasecmp (*p, str) == 0) {
-                       return TRUE;
+       for (p = array; *p; p++) {
+               for (desktop = desktop_names; *desktop; desktop++) {
+                       if (g_ascii_strcasecmp (*p, *desktop) == 0)
+                               return TRUE;
                }
+       }
 
        return FALSE;
 }
 
-static const gchar *
-get_session (void)
+static gchar **
+get_desktop_names (void)
 {
-       const gchar * session;
+       const gchar *current_desktop;
 
-       session = g_getenv ("XDG_CURRENT_DESKTOP");
+       current_desktop = g_getenv ("XDG_CURRENT_DESKTOP");
 
-       if (session == NULL || session[0] == 0) {
+       if (current_desktop == NULL || current_desktop[0] == 0) {
                /* historic behavior */
-               session = "GNOME";
+               current_desktop = "GNOME";
        }
 
-       return session;
+       return g_strsplit (current_desktop, ":", -1);
 }
 
 void
@@ -546,12 +549,11 @@ nautilus_link_get_link_info_given_file_contents (const char  *file_contents,
                                                 gboolean    *is_foreign)
 {
        GKeyFile *key_file;
+       gchar **desktop_names;
        char *type;
        char **only_show_in;
        char **not_show_in;
-       const gchar *session;
 
-       session = get_session ();
        key_file = g_key_file_new ();
        if (!g_key_file_load_from_data (key_file,
                                        file_contents,
@@ -562,6 +564,8 @@ nautilus_link_get_link_info_given_file_contents (const char  *file_contents,
                return; 
        }
 
+       desktop_names = get_desktop_names ();
+
        *uri = nautilus_link_get_link_uri_from_desktop (key_file, file_uri);
        *name = nautilus_link_get_link_name_from_desktop (key_file);
        *icon = nautilus_link_get_link_icon_from_desktop (key_file);
@@ -577,17 +581,18 @@ nautilus_link_get_link_info_given_file_contents (const char  *file_contents,
        *is_foreign = FALSE;
        only_show_in = g_key_file_get_string_list (key_file, MAIN_GROUP,
                                                   "OnlyShowIn", NULL, NULL);
-       if (session && only_show_in && !string_array_contains (only_show_in, session)) {
+       if (only_show_in && !string_array_contains (only_show_in, desktop_names)) {
                *is_foreign = TRUE;
        }
        g_strfreev (only_show_in);
 
        not_show_in = g_key_file_get_string_list (key_file, MAIN_GROUP,
                                                  "NotShowIn", NULL, NULL);
-       if (session && not_show_in && string_array_contains (not_show_in, session)) {
+       if (not_show_in && string_array_contains (not_show_in, desktop_names)) {
                *is_foreign = TRUE;
        }
        g_strfreev (not_show_in);
 
+       g_strfreev (desktop_names);
        g_key_file_free (key_file);
 }