moving from https://github.com/perberos/mate-desktop-environment

1 files changed, 816 insertions, 0 deletions

diff --git a/libmenu/desktop-entries.c b/libmenu/desktop-entries.c
new file mode 100644
index 0000000..9488bde
--- /dev/null
+++ b/libmenu/desktop-entries.c
@@ -0,0 +1,816 @@
+/*
+ * Copyright (C) 2002 - 2004 Red Hat, Inc.
+ *
+ * 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 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., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#include <config.h>
+
+#include "desktop-entries.h"
+
+#include <string.h>
+
+#include "menu-util.h"
+
+#define DESKTOP_ENTRY_GROUP     "Desktop Entry"
+#define KDE_DESKTOP_ENTRY_GROUP "KDE Desktop Entry"
+
+enum {
+	DESKTOP_ENTRY_NO_DISPLAY     = 1 << 0,
+	DESKTOP_ENTRY_HIDDEN         = 1 << 1,
+	DESKTOP_ENTRY_SHOW_IN_MATE   = 1 << 2,
+	DESKTOP_ENTRY_TRYEXEC_FAILED = 1 << 3
+};
+
+struct DesktopEntry {
+	char* path;
+	char* basename;
+
+	GQuark* categories;
+
+	char* name;
+	char* generic_name;
+	char* full_name;
+	char* comment;
+	char* icon;
+	char* exec;
+	gboolean terminal;
+
+	guint type: 2;
+	guint flags: 4;
+	guint refcount: 24;
+};
+
+struct DesktopEntrySet {
+	int refcount;
+	GHashTable* hash;
+};
+
+/*
+ * Desktop entries
+ */
+
+static guint get_flags_from_key_file(DesktopEntry* entry, GKeyFile* key_file, const char* desktop_entry_group)
+{
+  GError    *error;
+  char     **strv;
+  gboolean   no_display;
+  gboolean   hidden;
+  gboolean   show_in_mate;
+  gboolean   tryexec_failed;
+  char      *tryexec;
+  guint      flags;
+  int        i;
+
+  error = NULL;
+  no_display = g_key_file_get_boolean (key_file,
+                                       desktop_entry_group,
+                                       "NoDisplay",
+                                       &error);
+  if (error)
+    {
+      no_display = FALSE;
+      g_error_free (error);
+    }
+
+  error = NULL;
+  hidden = g_key_file_get_boolean (key_file,
+                                   desktop_entry_group,
+                                   "Hidden",
+                                   &error);
+  if (error)
+    {
+      hidden = FALSE;
+      g_error_free (error);
+    }
+
+  show_in_mate = TRUE;
+  strv = g_key_file_get_string_list (key_file,
+                                     desktop_entry_group,
+                                     "OnlyShowIn",
+                                     NULL,
+                                     NULL);
+  if (strv)
+    {
+      show_in_mate = FALSE;
+      for (i = 0; strv[i]; i++)
+        {
+          if (!strcmp (strv[i], "MATE"))
+            {
+              show_in_mate = TRUE;
+              break;
+            }
+        }
+    }
+  else
+    {
+      strv = g_key_file_get_string_list (key_file,
+                                         desktop_entry_group,
+                                         "NotShowIn",
+                                         NULL,
+                                         NULL);
+      if (strv)
+        {
+          show_in_mate = TRUE;
+          for (i = 0; strv[i]; i++)
+            {
+              if (!strcmp (strv[i], "MATE"))
+                {
+                  show_in_mate = FALSE;
+                }
+            }
+        }
+    }
+  g_strfreev (strv);
+
+  tryexec_failed = FALSE;
+  tryexec = g_key_file_get_string (key_file,
+                                   desktop_entry_group,
+                                   "TryExec",
+                                   NULL);
+  if (tryexec)
+    {
+      char *path;
+
+      path = g_find_program_in_path (g_strstrip (tryexec));
+
+      tryexec_failed = (path == NULL);
+
+      g_free (path);
+      g_free (tryexec);
+    }
+
+  flags = 0;
+  if (no_display)
+    flags |= DESKTOP_ENTRY_NO_DISPLAY;
+  if (hidden)
+    flags |= DESKTOP_ENTRY_HIDDEN;
+  if (show_in_mate)
+    flags |= DESKTOP_ENTRY_SHOW_IN_MATE;
+  if (tryexec_failed)
+    flags |= DESKTOP_ENTRY_TRYEXEC_FAILED;
+
+  return flags;
+}
+
+static GQuark* get_categories_from_key_file (DesktopEntry* entry, GKeyFile* key_file, const char* desktop_entry_group)
+{
+  GQuark  *retval;
+  char   **strv;
+  gsize    len;
+  int      i;
+
+  strv = g_key_file_get_string_list (key_file,
+                                     desktop_entry_group,
+                                     "Categories",
+                                     &len,
+                                     NULL);
+  if (!strv)
+    return NULL;
+
+  retval = g_new0 (GQuark, len + 1);
+
+  for (i = 0; strv[i]; i++)
+    retval[i] = g_quark_from_string (strv[i]);
+
+  g_strfreev (strv);
+
+  return retval;
+}
+
+static DesktopEntry* desktop_entry_load(DesktopEntry* entry)
+{
+  DesktopEntry *retval = NULL;
+  GKeyFile     *key_file;
+  GError       *error;
+  const char   *desktop_entry_group;
+  char         *name_str;
+  char         *type_str;
+
+  key_file = g_key_file_new ();
+
+  error = NULL;
+  if (!g_key_file_load_from_file (key_file, entry->path, 0, &error))
+    {
+      menu_verbose ("Failed to load \"%s\": %s\n",
+                    entry->path, error->message);
+      g_error_free (error);
+      goto out;
+    }
+
+  if (g_key_file_has_group (key_file, DESKTOP_ENTRY_GROUP))
+    {
+      desktop_entry_group = DESKTOP_ENTRY_GROUP;
+    }
+  else
+    {
+      menu_verbose ("\"%s\" contains no \"" DESKTOP_ENTRY_GROUP "\" group\n",
+                    entry->path);
+
+      if (g_key_file_has_group (key_file, KDE_DESKTOP_ENTRY_GROUP))
+        {
+          desktop_entry_group = KDE_DESKTOP_ENTRY_GROUP;
+          menu_verbose ("\"%s\" contains deprecated \"" KDE_DESKTOP_ENTRY_GROUP "\" group\n",
+                        entry->path);
+        }
+      else
+        {
+          goto out;
+        }
+    }
+
+  if (!g_key_file_has_key (key_file, desktop_entry_group, "Name", NULL))
+    {
+      menu_verbose ("\"%s\" contains no \"Name\" key\n", entry->path);
+      goto out;
+    }
+
+  name_str = g_key_file_get_locale_string (key_file, desktop_entry_group, "Name", NULL, NULL);
+  if (!name_str)
+    {
+      menu_verbose ("\"%s\" contains an invalid \"Name\" key\n", entry->path);
+      goto out;
+    }
+
+  g_free (name_str);
+
+  type_str = g_key_file_get_string (key_file, desktop_entry_group, "Type", NULL);
+  if (!type_str)
+    {
+      menu_verbose ("\"%s\" contains no \"Type\" key\n", entry->path);
+      goto out;
+    }
+
+  if ((entry->type == DESKTOP_ENTRY_DESKTOP && strcmp (type_str, "Application") != 0) ||
+      (entry->type == DESKTOP_ENTRY_DIRECTORY && strcmp (type_str, "Directory") != 0))
+    {
+      menu_verbose ("\"%s\" does not contain the correct \"Type\" value\n", entry->path);
+      g_free (type_str);
+      goto out;
+    }
+
+  g_free (type_str);
+
+  if (entry->type == DESKTOP_ENTRY_DESKTOP &&
+      !g_key_file_has_key (key_file, desktop_entry_group, "Exec", NULL))
+    {
+      menu_verbose ("\"%s\" does not contain an \"Exec\" key\n", entry->path);
+      goto out;
+    }
+
+  retval = entry;
+
+#define GET_LOCALE_STRING(n) g_key_file_get_locale_string (key_file, desktop_entry_group, (n), NULL, NULL)
+
+  retval->name         = GET_LOCALE_STRING ("Name");
+  retval->generic_name = GET_LOCALE_STRING ("GenericName");
+  retval->full_name    = GET_LOCALE_STRING ("X-MATE-FullName");
+  retval->comment      = GET_LOCALE_STRING ("Comment");
+  retval->icon         = GET_LOCALE_STRING ("Icon");
+  retval->flags        = get_flags_from_key_file (retval, key_file, desktop_entry_group);
+  retval->categories   = get_categories_from_key_file (retval, key_file, desktop_entry_group);
+
+  if (entry->type == DESKTOP_ENTRY_DESKTOP)
+    {
+      retval->exec = g_key_file_get_string (key_file, desktop_entry_group, "Exec", NULL);
+      retval->terminal = g_key_file_get_boolean (key_file, desktop_entry_group, "Terminal", NULL);
+    }
+
+#undef GET_LOCALE_STRING
+
+  menu_verbose ("Desktop entry \"%s\" (%s, %s, %s, %s, %s) flags: NoDisplay=%s, Hidden=%s, ShowInMATE=%s, TryExecFailed=%s\n",
+                retval->basename,
+                retval->name,
+                retval->generic_name ? retval->generic_name : "(null)",
+                retval->full_name ? retval->full_name : "(null)",
+                retval->comment ? retval->comment : "(null)",
+                retval->icon ? retval->icon : "(null)",
+                retval->flags & DESKTOP_ENTRY_NO_DISPLAY     ? "(true)" : "(false)",
+                retval->flags & DESKTOP_ENTRY_HIDDEN         ? "(true)" : "(false)",
+                retval->flags & DESKTOP_ENTRY_SHOW_IN_MATE  ? "(true)" : "(false)",
+                retval->flags & DESKTOP_ENTRY_TRYEXEC_FAILED ? "(true)" : "(false)");
+
+ out:
+  g_key_file_free (key_file);
+
+  if (!retval)
+    desktop_entry_unref (entry);
+
+  return retval;
+}
+
+DesktopEntry* desktop_entry_new(const char* path)
+{
+  DesktopEntryType  type;
+  DesktopEntry     *retval;
+
+  menu_verbose ("Loading desktop entry \"%s\"\n", path);
+
+  if (g_str_has_suffix (path, ".desktop"))
+    {
+      type = DESKTOP_ENTRY_DESKTOP;
+    }
+  else if (g_str_has_suffix (path, ".directory"))
+    {
+      type = DESKTOP_ENTRY_DIRECTORY;
+    }
+  else
+    {
+      menu_verbose ("Unknown desktop entry suffix in \"%s\"\n",
+                    path);
+      return NULL;
+    }
+
+  retval = g_new0 (DesktopEntry, 1);
+
+  retval->refcount = 1;
+  retval->type     = type;
+  retval->basename = g_path_get_basename (path);
+  retval->path     = g_strdup (path);
+
+  return desktop_entry_load (retval);
+}
+
+DesktopEntry* desktop_entry_reload(DesktopEntry* entry)
+{
+  g_return_val_if_fail (entry != NULL, NULL);
+
+  menu_verbose ("Re-loading desktop entry \"%s\"\n", entry->path);
+
+  g_free (entry->categories);
+  entry->categories = NULL;
+
+  g_free (entry->name);
+  entry->name = NULL;
+
+  g_free (entry->generic_name);
+  entry->generic_name = NULL;
+
+  g_free (entry->full_name);
+  entry->full_name = NULL;
+
+  g_free (entry->comment);
+  entry->comment = NULL;
+
+  g_free (entry->icon);
+  entry->icon = NULL;
+
+  g_free (entry->exec);
+  entry->exec = NULL;
+
+  entry->terminal = 0;
+  entry->flags = 0;
+
+  return desktop_entry_load (entry);
+}
+
+DesktopEntry* desktop_entry_ref(DesktopEntry* entry)
+{
+  g_return_val_if_fail (entry != NULL, NULL);
+  g_return_val_if_fail (entry->refcount > 0, NULL);
+
+  entry->refcount += 1;
+
+  return entry;
+}
+
+DesktopEntry* desktop_entry_copy(DesktopEntry* entry)
+{
+  DesktopEntry *retval;
+  int           i;
+
+  menu_verbose ("Copying desktop entry \"%s\"\n",
+                entry->basename);
+
+  retval = g_new0 (DesktopEntry, 1);
+
+  retval->refcount     = 1;
+  retval->type         = entry->type;
+  retval->basename     = g_strdup (entry->basename);
+  retval->path         = g_strdup (entry->path);
+  retval->name         = g_strdup (entry->name);
+  retval->generic_name = g_strdup (entry->generic_name);
+  retval->full_name    = g_strdup (entry->full_name);
+  retval->comment      = g_strdup (entry->comment);
+  retval->icon         = g_strdup (entry->icon);
+  retval->exec         = g_strdup (entry->exec);
+  retval->terminal     = entry->terminal;
+  retval->flags        = entry->flags;
+
+  i = 0;
+  if (entry->categories != NULL)
+    {
+      for (; entry->categories[i]; i++);
+    }
+
+  retval->categories = g_new0 (GQuark, i + 1);
+
+  i = 0;
+  if (entry->categories != NULL)
+    {
+      for (; entry->categories[i]; i++)
+        retval->categories[i] = entry->categories[i];
+    }
+
+  return retval;
+}
+
+void desktop_entry_unref(DesktopEntry* entry)
+{
+  g_return_if_fail (entry != NULL);
+  g_return_if_fail (entry->refcount > 0);
+
+  entry->refcount -= 1;
+  if (entry->refcount == 0)
+    {
+      g_free (entry->categories);
+      entry->categories = NULL;
+
+      g_free (entry->name);
+      entry->name = NULL;
+
+      g_free (entry->generic_name);
+      entry->generic_name = NULL;
+
+      g_free (entry->full_name);
+      entry->full_name = NULL;
+
+      g_free (entry->comment);
+      entry->comment = NULL;
+
+      g_free (entry->icon);
+      entry->icon = NULL;
+
+      g_free (entry->exec);
+      entry->exec = NULL;
+
+      g_free (entry->basename);
+      entry->basename = NULL;
+
+      g_free (entry->path);
+      entry->path = NULL;
+
+      g_free (entry);
+    }
+}
+
+DesktopEntryType desktop_entry_get_type(DesktopEntry* entry)
+{
+	return entry->type;
+}
+
+const char* desktop_entry_get_path(DesktopEntry* entry)
+{
+	return entry->path;
+}
+
+const char *
+desktop_entry_get_basename (DesktopEntry *entry)
+{
+	return entry->basename;
+}
+
+const char* desktop_entry_get_name(DesktopEntry* entry)
+{
+	return entry->name;
+}
+
+const char* desktop_entry_get_generic_name(DesktopEntry* entry)
+{
+	return entry->generic_name;
+}
+
+const char* desktop_entry_get_full_name(DesktopEntry* entry)
+{
+  return entry->full_name;
+}
+
+const char* desktop_entry_get_comment(DesktopEntry* entry)
+{
+	return entry->comment;
+}
+
+const char* desktop_entry_get_icon(DesktopEntry* entry)
+{
+	return entry->icon;
+}
+
+const char* desktop_entry_get_exec(DesktopEntry* entry)
+{
+	return entry->exec;
+}
+
+gboolean desktop_entry_get_launch_in_terminal(DesktopEntry* entry)
+{
+	return entry->terminal;
+}
+
+gboolean desktop_entry_get_hidden(DesktopEntry* entry)
+{
+	return (entry->flags & DESKTOP_ENTRY_HIDDEN) != 0;
+}
+
+gboolean desktop_entry_get_no_display(DesktopEntry* entry)
+{
+	return (entry->flags & DESKTOP_ENTRY_NO_DISPLAY) != 0;
+}
+
+gboolean desktop_entry_get_show_in_mate(DesktopEntry* entry)
+{
+	return (entry->flags & DESKTOP_ENTRY_SHOW_IN_MATE) != 0;
+}
+
+gboolean desktop_entry_get_tryexec_failed(DesktopEntry* entry)
+{
+	return (entry->flags & DESKTOP_ENTRY_TRYEXEC_FAILED) != 0;
+}
+
+gboolean desktop_entry_has_categories(DesktopEntry* entry)
+{
+	return (entry->categories != NULL && entry->categories[0] != 0);
+}
+
+gboolean desktop_entry_has_category(DesktopEntry* entry, const char* category)
+{
+  GQuark quark;
+  int    i;
+
+  if (entry->categories == NULL)
+    return FALSE;
+
+  if (!(quark = g_quark_try_string (category)))
+    return FALSE;
+
+  for (i = 0; entry->categories[i]; i++)
+    {
+      if (quark == entry->categories[i])
+        return TRUE;
+    }
+
+  return FALSE;
+}
+
+void desktop_entry_add_legacy_category(DesktopEntry* entry)
+{
+  GQuark *categories;
+  int     i;
+
+  menu_verbose ("Adding Legacy category to \"%s\"\n",
+                entry->basename);
+
+  i = 0;
+  if (entry->categories != NULL)
+    {
+      for (; entry->categories[i]; i++);
+    }
+
+  categories = g_new0 (GQuark, i + 2);
+
+  i = 0;
+  if (entry->categories != NULL)
+    {
+      for (; entry->categories[i]; i++)
+        categories[i] = entry->categories[i];
+    }
+
+  categories[i] = g_quark_from_string ("Legacy");
+
+  g_free (entry->categories);
+  entry->categories = categories;
+}
+
+/*
+ * Entry sets
+ */
+
+DesktopEntrySet* desktop_entry_set_new(void)
+{
+  DesktopEntrySet *set;
+
+  set = g_new0 (DesktopEntrySet, 1);
+  set->refcount = 1;
+
+  menu_verbose (" New entry set %p\n", set);
+
+  return set;
+}
+
+DesktopEntrySet* desktop_entry_set_ref(DesktopEntrySet* set)
+{
+  g_return_val_if_fail (set != NULL, NULL);
+  g_return_val_if_fail (set->refcount > 0, NULL);
+
+  set->refcount += 1;
+
+  return set;
+}
+
+void desktop_entry_set_unref(DesktopEntrySet* set)
+{
+  g_return_if_fail (set != NULL);
+  g_return_if_fail (set->refcount > 0);
+
+  set->refcount -= 1;
+  if (set->refcount == 0)
+    {
+      menu_verbose (" Deleting entry set %p\n", set);
+
+      if (set->hash)
+        g_hash_table_destroy (set->hash);
+      set->hash = NULL;
+
+      g_free (set);
+    }
+}
+
+void desktop_entry_set_add_entry(DesktopEntrySet* set, DesktopEntry* entry, const char* file_id)
+{
+  menu_verbose (" Adding to set %p entry %s\n", set, file_id);
+
+  if (set->hash == NULL)
+    {
+      set->hash = g_hash_table_new_full (g_str_hash,
+                                         g_str_equal,
+                                         g_free,
+                                         (GDestroyNotify) desktop_entry_unref);
+    }
+
+  g_hash_table_replace (set->hash,
+                        g_strdup (file_id),
+                        desktop_entry_ref (entry));
+}
+
+DesktopEntry* desktop_entry_set_lookup(DesktopEntrySet* set, const char* file_id)
+{
+  if (set->hash == NULL)
+    return NULL;
+
+  return g_hash_table_lookup (set->hash, file_id);
+}
+
+typedef struct {
+	DesktopEntrySetForeachFunc func;
+	gpointer user_data;
+} EntryHashForeachData;
+
+static void entry_hash_foreach(const char* file_id, DesktopEntry* entry, EntryHashForeachData* fd)
+{
+	fd->func(file_id, entry, fd->user_data);
+}
+
+void desktop_entry_set_foreach(DesktopEntrySet* set, DesktopEntrySetForeachFunc func, gpointer user_data)
+{
+  g_return_if_fail (set != NULL);
+  g_return_if_fail (func != NULL);
+
+  if (set->hash != NULL)
+    {
+      EntryHashForeachData fd;
+
+      fd.func      = func;
+      fd.user_data = user_data;
+
+      g_hash_table_foreach (set->hash,
+                            (GHFunc) entry_hash_foreach,
+                            &fd);
+    }
+}
+
+static void desktop_entry_set_clear(DesktopEntrySet* set)
+{
+  menu_verbose (" Clearing set %p\n", set);
+
+  if (set->hash != NULL)
+    {
+      g_hash_table_destroy (set->hash);
+      set->hash = NULL;
+    }
+}
+
+int desktop_entry_set_get_count(DesktopEntrySet* set)
+{
+  if (set->hash == NULL)
+    return 0;
+
+  return g_hash_table_size (set->hash);
+}
+
+static void union_foreach(const char* file_id, DesktopEntry* entry, DesktopEntrySet* set)
+{
+	/* we are iterating over "with" adding anything not
+	 * already in "set". We unconditionally overwrite
+	 * the stuff in "set" because we can assume
+	 * two entries with the same name are equivalent.
+	 */
+	desktop_entry_set_add_entry(set, entry, file_id);
+}
+
+void desktop_entry_set_union(DesktopEntrySet* set, DesktopEntrySet* with)
+{
+  menu_verbose (" Union of %p and %p\n", set, with);
+
+  if (desktop_entry_set_get_count (with) == 0)
+    return; /* A fast simple case */
+
+  g_hash_table_foreach (with->hash,
+                        (GHFunc) union_foreach,
+                        set);
+}
+
+typedef struct {
+	DesktopEntrySet *set;
+	DesktopEntrySet *with;
+} IntersectData;
+
+static gboolean intersect_foreach_remove(const char* file_id, DesktopEntry* entry, IntersectData* id)
+{
+  /* Remove everything in "set" which is not in "with" */
+
+  if (g_hash_table_lookup (id->with->hash, file_id) != NULL)
+    return FALSE;
+
+  menu_verbose (" Removing from %p entry %s\n", id->set, file_id);
+
+  return TRUE; /* return TRUE to remove */
+}
+
+void desktop_entry_set_intersection(DesktopEntrySet* set, DesktopEntrySet* with)
+{
+  IntersectData id;
+
+  menu_verbose (" Intersection of %p and %p\n", set, with);
+
+  if (desktop_entry_set_get_count (set) == 0 ||
+      desktop_entry_set_get_count (with) == 0)
+    {
+      /* A fast simple case */
+      desktop_entry_set_clear (set);
+      return;
+    }
+
+  id.set  = set;
+  id.with = with;
+
+  g_hash_table_foreach_remove (set->hash,
+                               (GHRFunc) intersect_foreach_remove,
+                               &id);
+}
+
+typedef struct {
+	DesktopEntrySet *set;
+	DesktopEntrySet *other;
+} SubtractData;
+
+static gboolean subtract_foreach_remove(const char* file_id, DesktopEntry* entry, SubtractData* sd)
+{
+  /* Remove everything in "set" which is not in "other" */
+
+  if (g_hash_table_lookup (sd->other->hash, file_id) == NULL)
+    return FALSE;
+
+  menu_verbose (" Removing from %p entry %s\n", sd->set, file_id);
+
+  return TRUE; /* return TRUE to remove */
+}
+
+void desktop_entry_set_subtract(DesktopEntrySet* set, DesktopEntrySet* other)
+{
+  SubtractData sd;
+
+  menu_verbose (" Subtract from %p set %p\n", set, other);
+
+  if (desktop_entry_set_get_count (set) == 0 ||
+      desktop_entry_set_get_count (other) == 0)
+    return; /* A fast simple case */
+
+  sd.set   = set;
+  sd.other = other;
+
+  g_hash_table_foreach_remove (set->hash,
+                               (GHRFunc) subtract_foreach_remove,
+                               &sd);
+}
+
+void desktop_entry_set_swap_contents(DesktopEntrySet* a, DesktopEntrySet* b)
+{
+	GHashTable *tmp;
+
+	menu_verbose (" Swap contents of %p and %p\n", a, b);
+
+	tmp = a->hash;
+	 a->hash = b->hash;
+	b->hash = tmp;
+}