[nautilus/wip/ernestask/tasks: 37/39] Add deep count task class

[Ernestas Kulik <ernestask src gnome org>]

commit 40f7ab10d2a5221fbd1230b53cc0be631bde3f6c
Author: Ernestas Kulik <ernestask gnome org>
Date:   Tue Jun 27 20:51:54 2017 +0300

    Add deep count task class
    
    Incomplete

 src/meson.build                      |    4 +-
 src/tasks/nautilus-deep-count-task.c |  210 ++++++++++++++++++++++++++++++++++
 src/tasks/nautilus-deep-count-task.h |   34 ++++++
 3 files changed, 247 insertions(+), 1 deletions(-)
---
diff --git a/src/meson.build b/src/meson.build
index 18f88c7..4297951 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -268,7 +268,9 @@ libnautilus_sources = [
 #    'tasks/nautilus-new-folder-task.h',
 #    'tasks/nautilus-new-folder-task.c',
     'tasks/nautilus-extract-task.h',
-    'tasks/nautilus-extract-task.c'
+    'tasks/nautilus-extract-task.c',
+    'tasks/nautilus-deep-count-task.c',
+    'tasks/nautilus-deep-count-task.h'
 ]
 
 if get_option ('enable-tracker')
diff --git a/src/tasks/nautilus-deep-count-task.c b/src/tasks/nautilus-deep-count-task.c
new file mode 100644
index 0000000..152e6ca
--- /dev/null
+++ b/src/tasks/nautilus-deep-count-task.c
@@ -0,0 +1,210 @@
+/* Copyright (C) 2017 Ernestas Kulik <ernestask gnome org>
+ *
+ * This file is part of Nautilus.
+ *
+ * Nautilus is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Nautilus 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Nautilus.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "nautilus-deep-count-task.h"
+
+#include "nautilus-directory.h"
+#include "nautilus-file-private.h"
+
+struct _NautilusDeepCountTask
+{
+    GObject parent_instance;
+
+    NautilusFile *file;
+    GCancellable *cancellable;
+    GFileEnumerator *enumerator;
+    GFile *deep_count_location;
+    GList *deep_count_subdirectories;
+    GArray *seen_deep_count_inodes;
+    char *fs_id;
+
+    gsize deep_directory_count;
+    gsize deep_file_count;
+    gsize deep_unreadable_count;
+    goffset deep_size;
+};
+
+static void iface_init (NautilusTaskInterface *iface);
+
+G_DEFINE_TYPE_WITH_CODE (NautilusDeepCountTask, nautilus_deep_count_task,
+                         G_TYPE_OBJECT,
+                         G_IMPLEMENT_INTERFACE (NAUTILUS_TYPE_TASK, iface_init))
+
+#define DIRECTORY_LOAD_ITEMS_PER_CALLBACK 100
+
+enum
+{
+    PROP_FILE = 1,
+    N_PROPERTIES
+};
+
+GParamSpec *properties[N_PROPERTIES] = { NULL };
+
+static GCancellable *
+get_cancellable (NautilusTask *task)
+{
+    return NULL;
+}
+
+static void
+deep_count_next_dir (NautilusDeepCountTask *self)
+{
+    NautilusDirectory *directory;
+
+    directory = self->file->details->directory;
+}
+
+static void
+deep_count_load (NautilusDeepCountTask *self,
+                 GFile                 *location)
+{
+    g_autoptr (GFileEnumerator) enumerator = NULL;
+
+    self->deep_count_location = g_object_ref (location);
+
+    enumerator =
+        g_file_enumerate_children (location,
+                                   G_FILE_ATTRIBUTE_STANDARD_NAME ","
+                                   G_FILE_ATTRIBUTE_STANDARD_TYPE ","
+                                   G_FILE_ATTRIBUTE_STANDARD_SIZE ","
+                                   G_FILE_ATTRIBUTE_STANDARD_IS_HIDDEN ","
+                                   G_FILE_ATTRIBUTE_STANDARD_IS_BACKUP ","
+                                   G_FILE_ATTRIBUTE_ID_FILESYSTEM ","
+                                   G_FILE_ATTRIBUTE_UNIX_INODE,
+                                   G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS,
+                                   self->cancellable,
+                                   NULL);
+
+    if (enumerator == NULL)
+    {
+        self->deep_unreadable_count++;
+
+        deep_count_next_dir (self);
+    }
+    else
+    {
+        /*g_file_enumerator_next_files_async (enumerator,
+                                            DIRECTORY_LOAD_ITEMS_PER_CALLBACK,
+                                            G_PRIORITY_LOW,
+                                            self->cancellable,
+                                            deep_count_more_files_callback,
+                                            self);*/
+    }
+
+    g_object_unref (location);
+}
+
+static void
+execute (NautilusTask *task)
+{
+    NautilusDeepCountTask *self;
+    g_autoptr (GFile) location = NULL;
+    g_autoptr (GFileInfo) info = NULL;
+
+    self = NAUTILUS_DEEP_COUNT_TASK (task);
+    location = nautilus_file_get_location (self->file);
+
+    info = g_file_query_info (location,
+                              G_FILE_ATTRIBUTE_ID_FILESYSTEM,
+                              G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS,
+                              self->cancellable,
+                              NULL);
+
+    if (info != NULL)
+    {
+        const char *fs_id;
+
+        fs_id = g_file_info_get_attribute_string (info,
+                                                  G_FILE_ATTRIBUTE_ID_FILESYSTEM);
+        self->fs_id = g_strdup (fs_id);
+    }
+
+    deep_count_load (self, g_object_ref (location));
+}
+
+static void
+iface_init (NautilusTaskInterface *iface)
+{
+    iface->get_cancellable = get_cancellable;
+    iface->execute = execute;
+}
+
+static void
+set_property (GObject      *object,
+              guint         property_id,
+              const GValue *value,
+              GParamSpec   *pspec)
+{
+    switch (property_id)
+    {
+        case PROP_FILE:
+        {
+            NautilusDeepCountTask *self;
+
+            self = NAUTILUS_DEEP_COUNT_TASK (object);
+
+            self->file = g_value_get_pointer (value);
+        }
+        break;
+
+        default:
+        {
+            G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+        }
+    }
+}
+
+static void
+nautilus_deep_count_task_class_init (NautilusDeepCountTaskClass *klass)
+{
+    GObjectClass *object_class;
+
+    object_class = G_OBJECT_CLASS (klass);
+
+    object_class->set_property = set_property;
+
+    properties[PROP_FILE] =
+        g_param_spec_pointer ("file", "File", "File",
+                              G_PARAM_CONSTRUCT_ONLY | G_PARAM_WRITABLE);
+
+    g_object_class_install_properties (object_class, N_PROPERTIES, properties);
+}
+
+static void
+nautilus_deep_count_task_init (NautilusDeepCountTask *self)
+{
+    self->cancellable = g_cancellable_new ();
+    self->enumerator = NULL;
+    self->deep_count_location = NULL;
+    self->deep_count_subdirectories = NULL;
+    self->seen_deep_count_inodes = g_array_new (FALSE, TRUE, sizeof (guint64));;
+    self->fs_id = NULL;
+
+    self->deep_directory_count = 0;
+    self->deep_file_count = 0;
+    self->deep_unreadable_count = 0;
+    self->deep_size = 0;
+}
+
+NautilusTask *
+nautilus_deep_count_task_new (NautilusFile *file)
+{
+    return g_object_new (NAUTILUS_TYPE_DEEP_COUNT_TASK,
+                         "file", file,
+                         NULL);
+}
diff --git a/src/tasks/nautilus-deep-count-task.h b/src/tasks/nautilus-deep-count-task.h
new file mode 100644
index 0000000..a7cfe2c
--- /dev/null
+++ b/src/tasks/nautilus-deep-count-task.h
@@ -0,0 +1,34 @@
+/* Copyright (C) 2017 Ernestas Kulik <ernestask gnome org>
+ *
+ * This file is part of Nautilus.
+ *
+ * Nautilus is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Nautilus 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Nautilus.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef NAUTILUS_DEEP_COUNT_TASK_H
+#define NAUTILUS_DEEP_COUNT_TASK_H
+
+#include "nautilus-task.h"
+
+#include "nautilus-file.h"
+
+#define NAUTILUS_TYPE_DEEP_COUNT_TASK (nautilus_deep_count_task_get_type ())
+
+G_DECLARE_FINAL_TYPE (NautilusDeepCountTask, nautilus_deep_count_task,
+                      NAUTILUS, DEEP_COUNT_TASK,
+                      GObject)
+
+NautilusTask *nautilus_deep_count_task_new (NautilusFile *file);
+
+#endif