static void
save_snapshot_replace_cb (GFile *snapshot_file,
GAsyncResult *result,
GSimpleAsyncResult *simple)
{
GObject *object;
SaveContext *context;
GFileOutputStream *output_stream;
GError *local_error = NULL;
context = g_simple_async_result_get_op_res_gpointer (simple);
/* Output stream might be NULL, so don't use cast macro. */
output_stream = g_file_replace_finish (
snapshot_file, result, &local_error);
context->output_stream = (GOutputStream *) output_stream;
if (local_error != NULL) {
g_warn_if_fail (output_stream == NULL);
g_simple_async_result_take_error (simple, local_error);
g_simple_async_result_complete (simple);
g_object_unref (simple);
return;
}
g_return_if_fail (G_IS_OUTPUT_STREAM (output_stream));
/* g_async_result_get_source_object() returns a new reference. */
object = g_async_result_get_source_object (G_ASYNC_RESULT (simple));
/* Extract a MIME message from the composer. */
e_msg_composer_get_message_draft (
E_MSG_COMPOSER (object), G_PRIORITY_DEFAULT,
context->cancellable, (GAsyncReadyCallback)
save_snapshot_get_message_cb, simple);
g_object_unref (object);
}
gboolean
e_composer_autosave_snapshot (EMsgComposer *composer)
{
GtkhtmlEditor *editor;
CamelMimeMessage *message;
AutosaveState *state;
CamelStream *stream;
gint camelfd;
const gchar *errmsg;
g_return_val_if_fail (E_IS_MSG_COMPOSER (composer), FALSE);
editor = GTKHTML_EDITOR (composer);
/* If the contents are unchanged, exit early. */
if (!gtkhtml_editor_get_changed (editor))
return TRUE;
state = g_object_get_data (G_OBJECT (composer), "autosave");
g_return_val_if_fail (state != NULL, FALSE);
/* Open the autosave file on-demand. */
if (!composer_autosave_state_open (state, NULL)) {
errmsg = _("Could not open autosave file");
goto fail;
}
/* Extract a MIME message from the composer. */
message = e_msg_composer_get_message_draft (composer);
if (message == NULL) {
errmsg = _("Unable to retrieve message from editor");
goto fail;
}
/* Move to the beginning of the autosave file. */
if (lseek (state->fd, (off_t) 0, SEEK_SET) < 0) {
camel_object_unref (message);
errmsg = g_strerror (errno);
goto fail;
}
/* Destroy the contents of the autosave file. */
if (ftruncate (state->fd, (off_t) 0) < 0) {
camel_object_unref (message);
errmsg = g_strerror (errno);
goto fail;
}
/* Duplicate the file descriptor for Camel. */
if ((camelfd = dup (state->fd)) < 0) {
camel_object_unref (message);
errmsg = g_strerror (errno);
goto fail;
}
/* Open a CamelStream to the autosave file. */
stream = camel_stream_fs_new_with_fd (camelfd);
/* Write the message to the CamelStream. */
if (camel_data_wrapper_write_to_stream (CAMEL_DATA_WRAPPER (message), stream) < 0) {
camel_object_unref (message);
camel_object_unref (stream);
errmsg = g_strerror (errno);
goto fail;
}
/* Close the CamelStream. */
if (camel_stream_close (CAMEL_STREAM (stream)) < 0) {
camel_object_unref (message);
camel_object_unref (stream);
errmsg = g_strerror (errno);
goto fail;
}
/* Snapshot was successful; set various flags. */
gtkhtml_editor_set_changed (editor, FALSE);
e_composer_autosave_set_saved (composer, TRUE);
camel_object_unref (message);
camel_object_unref (stream);
return TRUE;
fail:
e_error_run (
GTK_WINDOW (composer), "mail-composer:no-autosave",
(state->filename != NULL) ? state->filename : "",
errmsg, NULL);
return FALSE;
}
