utilops.c

Gqview,Linux下基于GTK+库写成的轻量级而能丰富的图像浏览程序。

	else if (source_list->next)
		{
		multiple = TRUE;
		}
	else
		{
		path = g_strdup(source_list->data);
		path_list_free(source_list);
		source_list = NULL;
		multiple = FALSE;
		}

	if (copy)
		{
		title = _("Copy - GQview");
		op_text = _("_Copy");
		if (path)
			{
			text = _("Copy file");
			}
		else
			{
			text = _("Copy multiple files");
			}
		stock_id = GTK_STOCK_COPY;
		}
	else
		{
		title = _("Move - GQview");
		op_text = _("_Move");
		if (path)
			{
			text = _("Move file");
			}
		else
			{
			text = _("Move multiple files");
			}
		stock_id = GTK_STOCK_OK;
		}

	fd = file_util_file_dlg(title, "GQview", "dlg_copymove", parent,
				file_util_move_cancel_cb, NULL);
	generic_dialog_add_message(GENERIC_DIALOG(fd), NULL, text, NULL);

	if (path)
		{
		GtkWidget *box;

		box = pref_box_new(GENERIC_DIALOG(fd)->vbox, FALSE, GTK_ORIENTATION_HORIZONTAL, PREF_PAD_SPACE);
		pref_label_new(box, _("File name:"));
		pref_label_new(box, filename_from_path(path));
		}

	label = pref_label_new(GENERIC_DIALOG(fd)->vbox, _("Choose the destination folder."));
	gtk_misc_set_alignment(GTK_MISC(label), 0.0, 0.5);
	pref_spacer(GENERIC_DIALOG(fd)->vbox, 0);

	file_dialog_add_button(fd, stock_id, op_text, file_util_move_cb, TRUE);

	file_dialog_add_path_widgets(fd, NULL, dest_path, "move_copy", NULL, NULL);

	fd->type = copy;
	fd->source_path = path;
	fd->source_list = source_list;
	fd->multiple_files = multiple;

	gtk_widget_show(GENERIC_DIALOG(fd)->dialog);
}

void file_util_move(const gchar *source_path, GList *source_list, const gchar *dest_path, GtkWidget *parent)
{
	real_file_util_move(source_path, source_list, dest_path, FALSE, parent);
}

void file_util_copy(const gchar *source_path, GList *source_list, const gchar *dest_path, GtkWidget *parent)
{
	real_file_util_move(source_path, source_list, dest_path, TRUE, parent);
}

void file_util_move_simple(GList *list, const gchar *dest_path)
{
	if (!list) return;
	if (!dest_path)
		{
		path_list_free(list);
		return;
		}

	if (!list->next)
		{
		const gchar *source;
		gchar *dest;

		source = list->data;
		dest = concat_dir_and_file(dest_path, filename_from_path(source));

		file_util_move_single(file_data_single_new(source, dest, FALSE));
		g_free(dest);
		path_list_free(list);
		return;
		}

	file_util_move_multiple(file_data_multiple_new(list, dest_path, FALSE));
}

void file_util_copy_simple(GList *list, const gchar *dest_path)
{
	if (!list) return;
	if (!dest_path)
		{
		path_list_free(list);
		return;
		}

	if (!list->next)
		{
		const gchar *source;
		gchar *dest;

		source = list->data;
		dest = concat_dir_and_file(dest_path, filename_from_path(source));

		file_util_move_single(file_data_single_new(source, dest, TRUE));
		g_free(dest);
		path_list_free(list);
		return;
		}

	file_util_move_multiple(file_data_multiple_new(list, dest_path, TRUE));
}

/*
 *--------------------------------------------------------------------------
 * Safe Delete
 *--------------------------------------------------------------------------
 */

static gint file_util_safe_number(gint64 free_space)
{
	gint n = 0;
	gint64 total = 0;
	GList *list;
	GList *work;
	gint sorted = FALSE;
	gint warned = FALSE;

	if (!filelist_read(safe_delete_path, &list, NULL)) return 0;

	work = list;
	while (work)
		{
		FileData *fd;
		gint v;
	       
		fd = work->data;
		work = work->next;

		v = (gint)strtol(fd->name, NULL, 10);
		if (v >= n) n = v + 1;

		total += fd->size;
		}

	while (list &&
	       (free_space < 0 || total + free_space > (gint64)safe_delete_size * 1048576) )
		{
		FileData *fd;

		if (!sorted)
			{
			list = filelist_sort(list, SORT_NAME, TRUE);
			sorted = TRUE;
			}

		fd = list->data;
		list = g_list_remove(list, fd);

		if (debug) printf("expunging from trash for space: %s\n", fd->name);
		if (!unlink_file(fd->path) && !warned)
			{
			file_util_warning_dialog(_("Delete failed"),
						 _("Unable to remove old file from trash folder"),
						 GTK_STOCK_DIALOG_WARNING, NULL);
			warned = TRUE;
			}
		total -= fd->size;
		file_data_free(fd);
		}

	filelist_free(list);

	return n;
}

void file_util_trash_clear(void)
{
	file_util_safe_number(-1);
}

static gchar *file_util_safe_dest(const gchar *path)
{
	gint n;

	n = file_util_safe_number(filesize(path));
	return g_strdup_printf("%s/%06d_%s", safe_delete_path, n, filename_from_path(path));
}

static void file_util_safe_del_toggle_cb(GtkWidget *button, gpointer data)
{
	safe_delete_enable = gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(button));
}

static void file_util_safe_del_close_cb(GtkWidget *dialog, gpointer data)
{
	GenericDialog **gd = data;

	*gd = NULL;
}

static gint file_util_unlink(const gchar *path)
{
	static GenericDialog *gd = NULL;
	gchar *result = NULL;
	gint success = TRUE;

	if (!isfile(path)) return FALSE;

	if (!safe_delete_enable)
		{
		return unlink_file(path);
		}

	if (!isdir(safe_delete_path))
		{
		if (debug) printf("creating trash: %s\n", safe_delete_path);
		if (!safe_delete_path || !mkdir_utf8(safe_delete_path, 0755))
			{
			result = _("Could not create folder");
			success = FALSE;
			}
		}

	if (success)
		{
		gchar *dest;

		dest = file_util_safe_dest(path);
		if (dest)
			{
			if (debug) printf("safe deleting %s to %s\n", path, dest);
			success = move_file(path, dest);
			}
		else
			{
			success = FALSE;
			}

		if (!success && !access_file(path, W_OK))
			{
			result = _("Permission denied");
			}
		g_free(dest);
		}

	if (result && !gd)
		{
		GtkWidget *button;
		gchar *buf;

		buf = g_strdup_printf(_("Unable to access or create the trash folder.\n\"%s\""), safe_delete_path);
		gd = file_util_warning_dialog(result, buf, GTK_STOCK_DIALOG_WARNING, NULL);
		g_free(buf);

		button = gtk_check_button_new_with_label(_("Turn off safe delete"));
		g_signal_connect(G_OBJECT(button), "toggled",
				 G_CALLBACK(file_util_safe_del_toggle_cb), NULL);
		gtk_box_pack_start(GTK_BOX(gd->vbox), button, FALSE, FALSE, 0);
		gtk_widget_show(button);

		g_signal_connect(G_OBJECT(gd->dialog), "destroy",
				 G_CALLBACK(file_util_safe_del_close_cb), &gd);
		}

	return success;
}

static void box_append_safe_delete_status(GenericDialog *gd)
{
	GtkWidget *label;
	gchar *buf;

	buf = g_strdup_printf(_("Safe delete: %s"), (safe_delete_enable) ? _("on") : _("off"));
	label = pref_label_new(gd->vbox, buf);
	g_free(buf);

	gtk_misc_set_alignment(GTK_MISC(label), 1.0, 0.5);
	gtk_widget_set_sensitive(label, FALSE);
}

/*
 *--------------------------------------------------------------------------
 * Delete routines
 *--------------------------------------------------------------------------
 */

/*
 * delete multiple files
 */

static void file_util_delete_multiple_ok_cb(GenericDialog *gd, gpointer data);
static void file_util_delete_multiple_cancel_cb(GenericDialog *gd, gpointer data);

static void file_util_delete_multiple_ok_cb(GenericDialog *gd, gpointer data)
{
	GList *source_list = data;

	while (source_list)
		{
		gchar *path = source_list->data;

		source_list = g_list_remove(source_list, path);

		if (!file_util_unlink(path))
			{
			if (source_list)
				{
				GenericDialog *d;
				gchar *text;

				d = file_util_gen_dlg(_("Delete failed"), "GQview", "dlg_confirm",
						      NULL, TRUE,
						      file_util_delete_multiple_cancel_cb, source_list);

				text = g_strdup_printf(_("Unable to delete file:\n %s\n Continue multiple delete operation?"), path);
				generic_dialog_add_message(d, GTK_STOCK_DIALOG_WARNING, NULL, text);
				g_free(text);

				generic_dialog_add_button(d, GTK_STOCK_GO_FORWARD, _("Co_ntinue"),
							  file_util_delete_multiple_ok_cb, TRUE);
				gtk_widget_show(d->dialog);
				}
			else
				{
				gchar *text;
				
				text = g_strdup_printf(_("Unable to delete file:\n%s"), path);
				file_util_warning_dialog(_("Delete failed"), text, GTK_STOCK_DIALOG_ERROR, NULL);
				g_free(text);
				}
			g_free(path);
			return;
			}
		else
			{
			file_maint_removed(path, source_list);
			}
		g_free(path);
		}
}

static void file_util_delete_multiple_cancel_cb(GenericDialog *gd, gpointer data)
{
	GList *source_list = data;

	path_list_free(source_list);
}

static void file_util_delete_multiple_review_skip(GenericDialog *gd, gint next)
{
	GtkWidget *button_back;
	GtkWidget *button_next;
	GtkWidget *button_label;
	GList *list;
	GList *list_point;
	const gchar *path;
	gchar *buf;

	list = gd->data;
	button_back = g_object_get_data(G_OBJECT(gd->dialog), "button_back");
	button_next = g_object_get_data(G_OBJECT(gd->dialog), "button_next");
	button_label = g_object_get_data(G_OBJECT(gd->dialog), "button_label");
	list_point = g_object_get_data(G_OBJECT(gd->dialog), "list_point");

	if (!list || !button_label) return;

	if (list_point)
		{
		if (next)
			{
			if (list_point->next) list_point = list_point->next;
			}
		else
			{
			if (list_point->prev) list_point = list_point->prev;
			}
		}
	else
		{
		list_point = list;
		}

	if (!list_point) return;

	path = list_point->data;
	buf = g_strdup_printf(_("File %d of %d"),
			      g_list_index(list, (gpointer)path) + 1,
			      g_list_length(list));
	gtk_label_set_text(GTK_LABEL(button_label), buf);
	g_free(buf);

	gtk_widget_set_sensitive(button_back, (list_point->prev != NULL) );
	gtk_widget_set_sensitive(button_next, (list_point->next != NULL) );

	generic_dialog_image_set(gd, path);

	g_object_set_data(G_OBJECT(gd->dialog), "list_point", list_point);
}

static void file_util_delete_multiple_review_back(GtkWidget *button, gpointer data)
{
	GenericDialog *gd = data;

	file_util_delete_multiple_review_skip(gd, FALSE);
}

static void file_util_delete_multiple_review_next(GtkWidget *button, gpointer data)
{
	GenericDialog *gd = data;

	file_util_delete_multiple_review_skip(gd, TRUE);
}

static void file_util_delete_multiple_review_button_cb(ImageWindow *imd, gint button, guint32 time,
						       gdouble x, gdouble y, guint state, gpointer data)
{
	if (button == 1)
		{
		file_util_delete_multiple_review_next(NULL, data);
		}
	else if (button == 2 || button == 3)
		{
		file_util_delete_multiple_review_back(NULL, data);
		}
}

static void file_util_delete_multiple_review_scroll_cb(ImageWindow *imd, GdkScrollDirection direction, guint32 time,
						       gdouble x, gdouble y, guint state, gpointer data)
{
	if (direction == GDK_SCROLL_UP)
		{
		file_util_delete_multiple_review_back(NULL, data);
		}
	else if (direction == GDK_SCROLL_DOWN)
		{
		file_util_delete_multiple_review_next(NULL, data);
		}
}

static void file_util_delete_multiple(GList *source_list, GtkWidget *parent)
{
	if (!confirm_delete)
		{
		file_util_delete_multiple_ok_cb(NULL, source_list);
		}
	else
		{
		GenericDialog *gd;
		GtkWidget *hbox;
		GtkWidget *button;
		GtkWidget *label;
		ImageWindow *imd;
		gchar *buf;

		gd = file_util_gen_dlg(_("Delete files - GQview"),
					"GQview", "dlg_confirm", parent, TRUE,
					file_util_delete_multiple_cancel_cb, source_list);

		generic_dialog_add_message(gd, NULL, _("Delete multiple files"), NULL);

		generic_dialog_add_image(gd, NULL, NULL, NULL, NULL, TRUE);
		imd = g_object_get_data(G_OBJECT(gd->dialog), "img_image");
		image_set_button_func(imd, file_util_delete_multiple_review_button_cb, gd);
		image_set_scroll_func(imd, file_util_delete_multiple_review_scroll_cb, gd);

		hbox = pref_box_new(gd->vbox, FALSE, GTK_ORIENTATION_HORIZONTAL, PREF_PAD_BUTTON_GAP);

		button = pref_button_new(hbox, GTK_STOCK_GO_BACK, NULL, TRUE,
					 G_CALLBACK(file_util_delete_multiple_review_back), gd);
		gtk_widget_set_sensitive(button, FALSE);
		g_object_set_data(G_OBJECT(gd->dialog), "button_back", button);

		button = pref_button_new(hbox, GTK_STOCK_GO_FORWARD, NULL, TRUE,
					 G_CALLBACK(file_util_delete_multiple_review_next), gd);
		g_object_set_data(G_OBJECT(gd->dialog), "button_next", button);

		buf = g_strdup_printf(_("Review %d files"), g_list_length(source_list) );
		label = pref_label_new(hbox, buf);
		g_free(buf);
		g_object_set_data(G_OBJECT(gd->dialog), "button_label", label);