[nautilus/wip/ernestask/tasks: 6/15] Add create task class

[Ernestas Kulik <ernestask src gnome org>]

commit 5f9f0be66d3c0f6655823becb809288b20b0bbf9
Author: Ernestas Kulik <ernestask gnome org>
Date:   Fri May 12 15:40:28 2017 +0300

    Add create task class

 src/meson.build                  |    4 +-
 src/tasks/nautilus-create-task.c |  420 ++++++++++++++++++++++++++++++++++++++
 src/tasks/nautilus-create-task.h |   17 ++
 3 files changed, 440 insertions(+), 1 deletions(-)
---
diff --git a/src/meson.build b/src/meson.build
index 6a816a5..ea38913 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -262,7 +262,9 @@ libnautilus_sources = [
     'nautilus-task-manager.h',
     'tasks/nautilus-file-task.h',
     'tasks/nautilus-file-task.c',
-    'tasks/nautilus-file-task-private.h'
+    'tasks/nautilus-file-task-private.h',
+    'tasks/nautilus-create-task.h',
+    'tasks/nautilus-create-task.c'
 ]
 
 if get_option ('enable-tracker')
diff --git a/src/tasks/nautilus-create-task.c b/src/tasks/nautilus-create-task.c
new file mode 100644
index 0000000..deb9740
--- /dev/null
+++ b/src/tasks/nautilus-create-task.c
@@ -0,0 +1,420 @@
+#include "nautilus-create-task.h"
+
+#include "nautilus-file-task-private.h"
+
+#include <gdk/gdk.h>
+
+typedef struct _NautilusCreateTaskPrivate
+{
+    GFile *dest_dir;
+    char *filename;
+    gboolean make_dir;
+    GFile *src;
+    char *src_data;
+    int length;
+    GdkPoint position;
+    gboolean has_position;
+    GFile *created_file;
+
+} NautilusCreateTaskPrivate;
+
+G_DEFINE_ABSTRACT_TYPE_WITH_PRIVATE (NautilusCreateTask, nautilus_create_task,
+                                     NAUTILUS_TYPE_FILE_TASK);
+
+static gboolean
+execute (NautilusTask  *task,
+         GError       **error)
+{
+    NautilusCreateTask *create_task;
+    NautilusCreateTaskPrivate *priv;
+    NautilusProgressInfo *progress;
+    int count;
+    g_autoptr (GFile) dest = NULL;
+    g_autofree gchar *dest_uri = NULL;
+    char *filename, *filename2, *new_filename;
+    char *filename_base, *suffix;
+    char *dest_fs_type;
+    GError *error;
+    gboolean res;
+    gboolean filename_is_utf8;
+    char *primary, *secondary, *details;
+    int response;
+    char *data;
+    int length;
+    GFileOutputStream *out;
+    gboolean handled_invalid_filename;
+    int max_length, offset;
+
+    create_task = NAUTILUS_CREATE_TASK (task);
+    priv = nautilus_create_task_get_instance_private (create_task);
+    progress = nautilus_file_task_get_progress_info (NAUTILUS_FILE_TASK (task));
+
+    nautilus_progress_info_start (progress);
+
+    handled_invalid_filename = FALSE;
+
+    dest_fs_type = NULL;
+    filename = NULL;
+
+    max_length = get_max_name_length (priv->dest_dir);
+
+    verify_destination (common,
+                        priv->dest_dir,
+                        NULL, -1);
+    if (job_aborted (common))
+    {
+        goto aborted;
+    }
+
+    filename = g_strdup (job->filename);
+    filename_is_utf8 = FALSE;
+    if (filename)
+    {
+        filename_is_utf8 = g_utf8_validate (filename, -1, NULL);
+    }
+    if (filename == NULL)
+    {
+        if (job->make_dir)
+        {
+            /* localizers: the initial name of a new folder  */
+            filename = g_strdup (_("Untitled Folder"));
+            filename_is_utf8 = TRUE;             /* Pass in utf8 */
+        }
+        else
+        {
+            if (job->src != NULL)
+            {
+                g_autofree char *basename = NULL;
+
+                basename = g_file_get_basename (job->src);
+                /* localizers: the initial name of a new template document */
+                filename = g_strdup_printf ("%s", basename);
+
+                g_free (basename);
+            }
+            if (filename == NULL)
+            {
+                /* localizers: the initial name of a new empty document */
+                filename = g_strdup (_("Untitled Document"));
+                filename_is_utf8 = TRUE;                 /* Pass in utf8 */
+            }
+        }
+    }
+
+    make_file_name_valid_for_dest_fs (filename, dest_fs_type);
+    if (filename_is_utf8)
+    {
+        dest = g_file_get_child_for_display_name (job->dest_dir, filename, NULL);
+    }
+    if (dest == NULL)
+    {
+        dest = g_file_get_child (job->dest_dir, filename);
+    }
+    count = 1;
+
+retry:
+
+    error = NULL;
+    if (job->make_dir)
+    {
+        res = g_file_make_directory (dest,
+                                     common->cancellable,
+                                     &error);
+
+        if (res)
+        {
+            GFile *real;
+
+            real = map_possibly_volatile_file_to_real (dest, common->cancellable, &error);
+            if (real == NULL)
+            {
+                res = FALSE;
+            }
+            else
+            {
+                g_object_unref (dest);
+                dest = real;
+            }
+        }
+
+        if (res && common->undo_info != NULL)
+        {
+            nautilus_file_undo_info_create_set_data (NAUTILUS_FILE_UNDO_INFO_CREATE (common->undo_info),
+                                                     dest, NULL, 0);
+        }
+    }
+    else
+    {
+        if (job->src)
+        {
+            res = g_file_copy (job->src,
+                               dest,
+                               G_FILE_COPY_NONE,
+                               common->cancellable,
+                               NULL, NULL,
+                               &error);
+
+            if (res)
+            {
+                GFile *real;
+
+                real = map_possibly_volatile_file_to_real (dest, common->cancellable, &error);
+                if (real == NULL)
+                {
+                    res = FALSE;
+                }
+                else
+                {
+                    g_object_unref (dest);
+                    dest = real;
+                }
+            }
+
+            if (res && common->undo_info != NULL)
+            {
+                gchar *uri;
+
+                uri = g_file_get_uri (job->src);
+                nautilus_file_undo_info_create_set_data (NAUTILUS_FILE_UNDO_INFO_CREATE (common->undo_info),
+                                                         dest, uri, 0);
+
+                g_free (uri);
+            }
+        }
+        else
+        {
+            data = "";
+            length = 0;
+            if (job->src_data)
+            {
+                data = job->src_data;
+                length = job->length;
+            }
+
+            out = g_file_create (dest,
+                                 G_FILE_CREATE_NONE,
+                                 common->cancellable,
+                                 &error);
+            if (out)
+            {
+                GFile *real;
+
+                real = map_possibly_volatile_file_to_real_on_write (dest,
+                                                                    out,
+                                                                    common->cancellable,
+                                                                    &error);
+                if (real == NULL)
+                {
+                    res = FALSE;
+                    g_object_unref (out);
+                }
+                else
+                {
+                    g_object_unref (dest);
+                    dest = real;
+
+                    res = g_output_stream_write_all (G_OUTPUT_STREAM (out),
+                                                     data, length,
+                                                     NULL,
+                                                     common->cancellable,
+                                                     &error);
+                    if (res)
+                    {
+                        res = g_output_stream_close (G_OUTPUT_STREAM (out),
+                                                     common->cancellable,
+                                                     &error);
+
+                        if (res && common->undo_info != NULL)
+                        {
+                            nautilus_file_undo_info_create_set_data (NAUTILUS_FILE_UNDO_INFO_CREATE 
(common->undo_info),
+                                                                     dest, data, length);
+                        }
+                    }
+
+                    /* This will close if the write failed and we didn't close */
+                    g_object_unref (out);
+                }
+            }
+            else
+            {
+                res = FALSE;
+            }
+        }
+    }
+
+    if (res)
+    {
+        job->created_file = g_object_ref (dest);
+        nautilus_file_changes_queue_file_added (dest);
+        dest_uri = g_file_get_uri (dest);
+        if (job->has_position)
+        {
+            nautilus_file_changes_queue_schedule_position_set (dest, job->position, common->screen_num);
+        }
+        else if (eel_uri_is_desktop (dest_uri))
+        {
+            nautilus_file_changes_queue_schedule_position_remove (dest);
+        }
+    }
+    else
+    {
+        g_assert (error != NULL);
+
+        if (IS_IO_ERROR (error, INVALID_FILENAME) &&
+            !handled_invalid_filename)
+        {
+            handled_invalid_filename = TRUE;
+
+            g_assert (dest_fs_type == NULL);
+            dest_fs_type = query_fs_type (job->dest_dir, common->cancellable);
+
+            if (count == 1)
+            {
+                new_filename = g_strdup (filename);
+            }
+            else
+            {
+                filename_base = eel_filename_strip_extension (filename);
+                offset = strlen (filename_base);
+                suffix = g_strdup (filename + offset);
+
+                filename2 = g_strdup_printf ("%s %d%s", filename_base, count, suffix);
+
+                new_filename = NULL;
+                if (max_length > 0 && strlen (filename2) > max_length)
+                {
+                    new_filename = shorten_utf8_string (filename2, strlen (filename2) - max_length);
+                }
+
+                if (new_filename == NULL)
+                {
+                    new_filename = g_strdup (filename2);
+                }
+
+                g_free (filename2);
+                g_free (suffix);
+            }
+
+            if (make_file_name_valid_for_dest_fs (new_filename, dest_fs_type))
+            {
+                g_clear_object (&dest);
+
+                if (filename_is_utf8)
+                {
+                    dest = g_file_get_child_for_display_name (job->dest_dir, new_filename, NULL);
+                }
+                if (dest == NULL)
+                {
+                    dest = g_file_get_child (job->dest_dir, new_filename);
+                }
+
+                g_free (new_filename);
+                g_error_free (error);
+                goto retry;
+            }
+            g_free (new_filename);
+        }
+
+        if (IS_IO_ERROR (error, EXISTS))
+        {
+            g_clear_object (&dest);
+            filename_base = eel_filename_strip_extension (filename);
+            offset = strlen (filename_base);
+            suffix = g_strdup (filename + offset);
+
+            filename2 = g_strdup_printf ("%s %d%s", filename_base, ++count, suffix);
+
+            if (max_length > 0 && strlen (filename2) > max_length)
+            {
+                new_filename = shorten_utf8_string (filename2, strlen (filename2) - max_length);
+                if (new_filename != NULL)
+                {
+                    g_free (filename2);
+                    filename2 = new_filename;
+                }
+            }
+
+            make_file_name_valid_for_dest_fs (filename2, dest_fs_type);
+            if (filename_is_utf8)
+            {
+                dest = g_file_get_child_for_display_name (job->dest_dir, filename2, NULL);
+            }
+            if (dest == NULL)
+            {
+                dest = g_file_get_child (job->dest_dir, filename2);
+            }
+            g_free (filename2);
+            g_free (suffix);
+            g_error_free (error);
+            goto retry;
+        }
+        else if (IS_IO_ERROR (error, CANCELLED))
+        {
+            g_error_free (error);
+        }
+        /* Other error */
+        else
+        {
+            g_autofree gchar *basename = NULL;
+            g_autofree gchar *filename = NULL;
+
+            basename = get_basename (dest);
+            if (job->make_dir)
+            {
+                primary = g_strdup_printf (_("Error while creating directory %s."),
+                                           basename);
+            }
+            else
+            {
+                primary = g_strdup_printf (_("Error while creating file %s."),
+                                           basename);
+            }
+            filename = g_file_get_parse_name (job->dest_dir);
+            secondary = g_strdup_printf (_("There was an error creating the directory in %s."),
+                                         filename);
+
+            details = error->message;
+
+            response = run_warning (common,
+                                    primary,
+                                    secondary,
+                                    details,
+                                    FALSE,
+                                    CANCEL, SKIP,
+                                    NULL);
+
+            g_error_free (error);
+
+            if (response == 0 || response == GTK_RESPONSE_DELETE_EVENT)
+            {
+                abort_job (common);
+            }
+            else if (response == 1)                 /* skip */
+            {                   /* do nothing */
+            }
+            else
+            {
+                g_assert_not_reached ();
+            }
+        }
+    }
+
+aborted:
+    if (dest)
+    {
+        g_object_unref (dest);
+    }
+    g_free (filename);
+    g_free (dest_fs_type);
+}
+
+static void
+nautilus_create_task_class_init (NautilusCreateTaskClass *klass)
+{
+    NAUTILUS_FILE_TASK_CLASS (klass)->execute = execute;
+}
+
+static void
+nautilus_create_task_init (NautilusCreateTask *self)
+{
+}
diff --git a/src/tasks/nautilus-create-task.h b/src/tasks/nautilus-create-task.h
new file mode 100644
index 0000000..dd4357c
--- /dev/null
+++ b/src/tasks/nautilus-create-task.h
@@ -0,0 +1,17 @@
+#ifndef NAUTILUS_CREATE_TASK_H
+#define NAUTILUS_CREATE_TASK_H
+
+#include "nautilus-file-task.h"
+
+#define NAUTILUS_TYPE_CREATE_TASK (nautilus_create_task_get_type ())
+
+G_DECLARE_DERIVABLE_TYPE (NautilusCreateTask, nautilus_create_task,
+                          NAUTILUS, CREATE_TASK,
+                          NautilusFileTask)
+
+struct _NautilusCreateTaskClass
+{
+    NautilusFileTaskClass parent_class;
+};
+
+#endif