Adding upstream version 2.10.34.upstream/2.10.34upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 508 insertions, 0 deletions

diff --git a/libgimpmodule/gimpmoduledb.c b/libgimpmodule/gimpmoduledb.c
new file mode 100644
index 0000000..4bc1c73
--- /dev/null
+++ b/libgimpmodule/gimpmoduledb.c
@@ -0,0 +1,508 @@
+/* LIBGIMP - The GIMP Library
+ * Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
+ *
+ * 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.  If not, see
+ * <https://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <string.h>
+
+#include <gio/gio.h>
+
+#include "libgimpbase/gimpbase.h"
+#include "libgimpconfig/gimpconfig.h"
+
+#include "gimpmoduletypes.h"
+
+#include "gimpmodule.h"
+#include "gimpmoduledb.h"
+
+
+/**
+ * SECTION: gimpmoduledb
+ * @title: GimpModuleDB
+ * @short_description: Keeps a list of #GimpModule's found in a given
+ *                     searchpath.
+ *
+ * Keeps a list of #GimpModule's found in a given searchpath.
+ **/
+
+
+enum
+{
+  ADD,
+  REMOVE,
+  MODULE_MODIFIED,
+  LAST_SIGNAL
+};
+
+
+#define DUMP_DB FALSE
+
+
+static void         gimp_module_db_finalize            (GObject      *object);
+
+static void         gimp_module_db_load_directory      (GimpModuleDB *db,
+                                                        GFile        *directory);
+static void         gimp_module_db_load_module         (GimpModuleDB *db,
+                                                        GFile        *file);
+
+static GimpModule * gimp_module_db_module_find_by_path (GimpModuleDB *db,
+                                                        const char   *fullpath);
+
+static void         gimp_module_db_module_dump_func    (gpointer      data,
+                                                        gpointer      user_data);
+static void         gimp_module_db_module_on_disk_func (gpointer      data,
+                                                        gpointer      user_data);
+static void         gimp_module_db_module_remove_func  (gpointer      data,
+                                                        gpointer      user_data);
+
+static void         gimp_module_db_module_modified     (GimpModule   *module,
+                                                        GimpModuleDB *db);
+
+
+G_DEFINE_TYPE (GimpModuleDB, gimp_module_db, G_TYPE_OBJECT)
+
+#define parent_class gimp_module_db_parent_class
+
+static guint db_signals[LAST_SIGNAL] = { 0 };
+
+
+static void
+gimp_module_db_class_init (GimpModuleDBClass *klass)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+  db_signals[ADD] =
+    g_signal_new ("add",
+                  G_TYPE_FROM_CLASS (klass),
+                  G_SIGNAL_RUN_FIRST,
+                  G_STRUCT_OFFSET (GimpModuleDBClass, add),
+                  NULL, NULL,
+                  g_cclosure_marshal_VOID__OBJECT,
+                  G_TYPE_NONE, 1,
+                  GIMP_TYPE_MODULE);
+
+  db_signals[REMOVE] =
+    g_signal_new ("remove",
+                  G_TYPE_FROM_CLASS (klass),
+                  G_SIGNAL_RUN_FIRST,
+                  G_STRUCT_OFFSET (GimpModuleDBClass, remove),
+                  NULL, NULL,
+                  g_cclosure_marshal_VOID__OBJECT,
+                  G_TYPE_NONE, 1,
+                  GIMP_TYPE_MODULE);
+
+  db_signals[MODULE_MODIFIED] =
+    g_signal_new ("module-modified",
+                  G_TYPE_FROM_CLASS (klass),
+                  G_SIGNAL_RUN_FIRST,
+                  G_STRUCT_OFFSET (GimpModuleDBClass, module_modified),
+                  NULL, NULL,
+                  g_cclosure_marshal_VOID__OBJECT,
+                  G_TYPE_NONE, 1,
+                  GIMP_TYPE_MODULE);
+
+  object_class->finalize = gimp_module_db_finalize;
+
+  klass->add             = NULL;
+  klass->remove          = NULL;
+}
+
+static void
+gimp_module_db_init (GimpModuleDB *db)
+{
+  db->modules      = NULL;
+  db->load_inhibit = NULL;
+  db->verbose      = FALSE;
+}
+
+static void
+gimp_module_db_finalize (GObject *object)
+{
+  GimpModuleDB *db = GIMP_MODULE_DB (object);
+
+  if (db->modules)
+    {
+      GList *list;
+
+      for (list = db->modules; list; list = g_list_next (list))
+        {
+          g_signal_handlers_disconnect_by_func (list->data,
+                                                gimp_module_db_module_modified,
+                                                db);
+        }
+
+      g_list_free (db->modules);
+      db->modules = NULL;
+    }
+
+  if (db->load_inhibit)
+    {
+      g_free (db->load_inhibit);
+      db->load_inhibit = NULL;
+    }
+
+  G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+/**
+ * gimp_module_db_new:
+ * @verbose: Pass %TRUE to enable debugging output.
+ *
+ * Creates a new #GimpModuleDB instance. The @verbose parameter will be
+ * passed to the created #GimpModule instances using gimp_module_new().
+ *
+ * Return value: The new #GimpModuleDB instance.
+ **/
+GimpModuleDB *
+gimp_module_db_new (gboolean verbose)
+{
+  GimpModuleDB *db;
+
+  db = g_object_new (GIMP_TYPE_MODULE_DB, NULL);
+
+  db->verbose = verbose ? TRUE : FALSE;
+
+  return db;
+}
+
+static gboolean
+is_in_inhibit_list (const gchar *filename,
+                    const gchar *inhibit_list)
+{
+  gchar       *p;
+  gint         pathlen;
+  const gchar *start;
+  const gchar *end;
+
+  if (! inhibit_list || ! strlen (inhibit_list))
+    return FALSE;
+
+  p = strstr (inhibit_list, filename);
+  if (!p)
+    return FALSE;
+
+  /* we have a substring, but check for colons either side */
+  start = p;
+  while (start != inhibit_list && *start != G_SEARCHPATH_SEPARATOR)
+    start--;
+
+  if (*start == G_SEARCHPATH_SEPARATOR)
+    start++;
+
+  end = strchr (p, G_SEARCHPATH_SEPARATOR);
+  if (! end)
+    end = inhibit_list + strlen (inhibit_list);
+
+  pathlen = strlen (filename);
+
+  if ((end - start) == pathlen)
+    return TRUE;
+
+  return FALSE;
+}
+
+/**
+ * gimp_module_db_set_load_inhibit:
+ * @db:           A #GimpModuleDB.
+ * @load_inhibit: A #G_SEARCHPATH_SEPARATOR delimited list of module
+ *                filenames to exclude from auto-loading.
+ *
+ * Sets the @load_inhibit flag for all #GimpModule's which are kept
+ * by @db (using gimp_module_set_load_inhibit()).
+ **/
+void
+gimp_module_db_set_load_inhibit (GimpModuleDB *db,
+                                 const gchar  *load_inhibit)
+{
+  GList *list;
+
+  g_return_if_fail (GIMP_IS_MODULE_DB (db));
+
+  if (db->load_inhibit)
+    g_free (db->load_inhibit);
+
+  db->load_inhibit = g_strdup (load_inhibit);
+
+  for (list = db->modules; list; list = g_list_next (list))
+    {
+      GimpModule *module = list->data;
+
+      gimp_module_set_load_inhibit (module,
+                                    is_in_inhibit_list (module->filename,
+                                                        load_inhibit));
+    }
+}
+
+/**
+ * gimp_module_db_get_load_inhibit:
+ * @db: A #GimpModuleDB.
+ *
+ * Return the #G_SEARCHPATH_SEPARATOR delimited list of module filenames
+ * which are excluded from auto-loading.
+ *
+ * Return value: the @db's @load_inhibit string.
+ **/
+const gchar *
+gimp_module_db_get_load_inhibit (GimpModuleDB *db)
+{
+  g_return_val_if_fail (GIMP_IS_MODULE_DB (db), NULL);
+
+  return db->load_inhibit;
+}
+
+/**
+ * gimp_module_db_load:
+ * @db:          A #GimpModuleDB.
+ * @module_path: A #G_SEARCHPATH_SEPARATOR delimited list of directories
+ *               to load modules from.
+ *
+ * Scans the directories contained in @module_path and creates a
+ * #GimpModule instance for every loadable module contained in the
+ * directories.
+ **/
+void
+gimp_module_db_load (GimpModuleDB *db,
+                     const gchar  *module_path)
+{
+  g_return_if_fail (GIMP_IS_MODULE_DB (db));
+  g_return_if_fail (module_path != NULL);
+
+  if (g_module_supported ())
+    {
+      GList *path;
+      GList *list;
+
+      path = gimp_config_path_expand_to_files (module_path, NULL);
+
+      for (list = path; list; list = g_list_next (list))
+        {
+          gimp_module_db_load_directory (db, list->data);
+        }
+
+      g_list_free_full (path, (GDestroyNotify) g_object_unref);
+    }
+
+  if (DUMP_DB)
+    g_list_foreach (db->modules, gimp_module_db_module_dump_func, NULL);
+}
+
+/**
+ * gimp_module_db_refresh:
+ * @db:          A #GimpModuleDB.
+ * @module_path: A #G_SEARCHPATH_SEPARATOR delimited list of directories
+ *               to load modules from.
+ *
+ * Does the same as gimp_module_db_load(), plus removes all #GimpModule
+ * instances whose modules have been deleted from disk.
+ *
+ * Note that the #GimpModule's will just be removed from the internal
+ * list and not freed as this is not possible with #GTypeModule
+ * instances which actually implement types.
+ **/
+void
+gimp_module_db_refresh (GimpModuleDB *db,
+                        const gchar  *module_path)
+{
+  GList *kill_list = NULL;
+
+  g_return_if_fail (GIMP_IS_MODULE_DB (db));
+  g_return_if_fail (module_path != NULL);
+
+  /* remove modules we don't have on disk anymore */
+  g_list_foreach (db->modules,
+                  gimp_module_db_module_on_disk_func,
+                  &kill_list);
+  g_list_foreach (kill_list,
+                  gimp_module_db_module_remove_func,
+                  db);
+  g_list_free (kill_list);
+
+  /* walk filesystem and add new things we find */
+  gimp_module_db_load (db, module_path);
+}
+
+static void
+gimp_module_db_load_directory (GimpModuleDB *db,
+                               GFile        *directory)
+{
+  GFileEnumerator *enumerator;
+
+  enumerator = g_file_enumerate_children (directory,
+                                          G_FILE_ATTRIBUTE_STANDARD_NAME ","
+                                          G_FILE_ATTRIBUTE_STANDARD_IS_HIDDEN ","
+                                          G_FILE_ATTRIBUTE_STANDARD_TYPE,
+                                          G_FILE_QUERY_INFO_NONE,
+                                          NULL, NULL);
+
+  if (enumerator)
+    {
+      GFileInfo *info;
+
+      while ((info = g_file_enumerator_next_file (enumerator, NULL, NULL)))
+        {
+          GFileType file_type = g_file_info_get_file_type (info);
+
+         if (file_type == G_FILE_TYPE_REGULAR &&
+             ! g_file_info_get_is_hidden (info))
+            {
+              GFile *child = g_file_enumerator_get_child (enumerator, info);
+
+              gimp_module_db_load_module (db, child);
+
+              g_object_unref (child);
+            }
+
+          g_object_unref (info);
+        }
+
+      g_object_unref (enumerator);
+    }
+}
+
+static void
+gimp_module_db_load_module (GimpModuleDB *db,
+                            GFile        *file)
+{
+  GimpModule *module;
+  gchar      *path;
+  gboolean    load_inhibit;
+
+  if (! gimp_file_has_extension (file, "." G_MODULE_SUFFIX))
+    return;
+
+  path = g_file_get_path (file);
+
+  /* don't load if we already know about it */
+  if (gimp_module_db_module_find_by_path (db, path))
+    {
+      g_free (path);
+      return;
+    }
+
+  load_inhibit = is_in_inhibit_list (path, db->load_inhibit);
+
+  module = gimp_module_new (path,
+                            load_inhibit,
+                            db->verbose);
+
+  g_free (path);
+
+  g_signal_connect (module, "modified",
+                    G_CALLBACK (gimp_module_db_module_modified),
+                    db);
+
+  db->modules = g_list_append (db->modules, module);
+
+  g_signal_emit (db, db_signals[ADD], 0, module);
+}
+
+static GimpModule *
+gimp_module_db_module_find_by_path (GimpModuleDB *db,
+                                    const char   *fullpath)
+{
+  GList *list;
+
+  for (list = db->modules; list; list = g_list_next (list))
+    {
+      GimpModule *module = list->data;
+
+      if (! strcmp (module->filename, fullpath))
+        return module;
+    }
+
+  return NULL;
+}
+
+static void
+gimp_module_db_module_dump_func (gpointer data,
+                                 gpointer user_data)
+{
+  GimpModule *module = data;
+
+  g_print ("\n%s: %s\n",
+           gimp_filename_to_utf8 (module->filename),
+           gimp_module_state_name (module->state));
+
+  g_print ("  module: %p  lasterr: %s  query: %p register: %p\n",
+           module->module,
+           module->last_module_error ? module->last_module_error : "NONE",
+           module->query_module,
+           module->register_module);
+
+  if (module->info)
+    {
+      g_print ("  purpose:   %s\n"
+               "  author:    %s\n"
+               "  version:   %s\n"
+               "  copyright: %s\n"
+               "  date:      %s\n",
+               module->info->purpose   ? module->info->purpose   : "NONE",
+               module->info->author    ? module->info->author    : "NONE",
+               module->info->version   ? module->info->version   : "NONE",
+               module->info->copyright ? module->info->copyright : "NONE",
+               module->info->date      ? module->info->date      : "NONE");
+    }
+}
+
+static void
+gimp_module_db_module_on_disk_func (gpointer data,
+                                    gpointer user_data)
+{
+  GimpModule  *module    = data;
+  GList      **kill_list = user_data;
+  gboolean     old_on_disk;
+
+  old_on_disk = module->on_disk;
+
+  module->on_disk = g_file_test (module->filename, G_FILE_TEST_IS_REGULAR);
+
+  /* if it's not on the disk, and it isn't in memory, mark it to be
+   * removed later.
+   */
+  if (! module->on_disk && ! module->module)
+    {
+      *kill_list = g_list_append (*kill_list, module);
+      module = NULL;
+    }
+
+  if (module && module->on_disk != old_on_disk)
+    gimp_module_modified (module);
+}
+
+static void
+gimp_module_db_module_remove_func (gpointer data,
+                                   gpointer user_data)
+{
+  GimpModule   *module = data;
+  GimpModuleDB *db     = user_data;
+
+  g_signal_handlers_disconnect_by_func (module,
+                                        gimp_module_db_module_modified,
+                                        db);
+
+  db->modules = g_list_remove (db->modules, module);
+
+  g_signal_emit (db, db_signals[REMOVE], 0, module);
+}
+
+static void
+gimp_module_db_module_modified (GimpModule   *module,
+                                GimpModuleDB *db)
+{
+  g_signal_emit (db, db_signals[MODULE_MODIFIED], 0, module);
+}