Add a plugin (disabled by default) to delete files from the filesystem.

Closes: #76.

configure.ac

@@ -54,7 +54,7 @@ dnl ======================
 INPUT_PLUGINS="tonegen metronom vtx"
 OUTPUT_PLUGINS=""
 EFFECT_PLUGINS="compressor crossfade crystalizer ladspa mixer stereo_plugin voice_removal echo_plugin"
-GENERAL_PLUGINS="alarm albumart search-tool"
+GENERAL_PLUGINS="alarm albumart delete-files search-tool"
 VISUALIZATION_PLUGINS="blur_scope cairo-spectrum"
 CONTAINER_PLUGINS="asx asx3 audpl m3u pls xspf"
 TRANSPORT_PLUGINS="unix-io gio"
@@ -1076,6 +1076,7 @@ echo "  General"
 echo "  -------"
 echo "  Alarm:                                  yes"
 echo "  Album Art:                              yes"
+echo "  Delete from Filesystem:                 yes"
 echo "  Linux Infrared Remote Control (LIRC)    $have_lirc"
 echo "  MPRIS 2 Server:                         $have_mpris2"
 echo "  Search Tool:                            yes"

src/delete-files/Makefile

@@ -0,0 +1,12 @@
+PLUGIN = delete-files${PLUGIN_SUFFIX}
+
+SRCS = delete-files.c
+
+include ../../buildsys.mk
+include ../../extra.mk
+
+plugindir := ${plugindir}/${GENERAL_PLUGIN_DIR}
+
+CPPFLAGS += -I../.. ${GTK_CFLAGS}
+CFLAGS += ${PLUGIN_CFLAGS}
+LIBS += ${GTK_LIBS}

src/delete-files/delete-files.c

@@ -0,0 +1,113 @@
+/*
+ * delete-files.c
+ * Copyright 2013 John Lindgren
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions, and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions, and the following disclaimer in the documentation
+ *    provided with the distribution.
+ *
+ * This software is provided "as is" and without any warranty, express or
+ * implied. In no event shall the authors be liable for any damages arising from
+ * the use of this software.
+ */
+
+
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <gtk/gtk.h>
+
+#include <audacious/i18n.h>
+#include <audacious/misc.h>
+#include <audacious/playlist.h>
+#include <audacious/plugin.h>
+#include <libaudcore/audstrings.h>
+#include <libaudgui/libaudgui-gtk.h>
+
+static const int menus[] = {AUD_MENU_MAIN, AUD_MENU_PLAYLIST_RCLICK};
+
+static GtkWidget * dialog = NULL;
+
+static void confirm_delete (void)
+{
+    int playlist = aud_playlist_get_active ();
+    int entry_count = aud_playlist_entry_count (playlist);
+
+    for (int i = 0; i < entry_count; i ++)
+    {
+        if (! aud_playlist_entry_get_selected (playlist, i))
+            continue;
+
+        char * uri = aud_playlist_entry_get_filename (playlist, i);
+        char * filename = uri_to_filename (uri);
+
+        if (! filename)
+        {
+            SPRINTF (error, _("Error deleting %s: not a local file."), uri);
+            aud_interface_show_error (error);
+        }
+        else if (unlink (filename) < 0)
+        {
+            SPRINTF (error, _("Error deleting %s: %s."), filename, strerror (errno));
+            aud_interface_show_error (error);
+        }
+
+        str_unref (uri);
+        free (filename);
+    }
+
+    aud_playlist_delete_selected (playlist);
+}
+
+static void start_delete (void)
+{
+    if (dialog)
+    {
+        gtk_window_present ((GtkWindow *) dialog);
+        return;
+    }
+
+    GtkWidget * button1 = audgui_button_new (_("Delete"), "edit-delete",
+     (AudguiCallback) confirm_delete, NULL);
+    GtkWidget * button2 = audgui_button_new (_("Cancel"), "window-close", NULL, NULL);
+
+    dialog = audgui_dialog_new (GTK_MESSAGE_QUESTION,
+     _("Delete Files"), _("Do you want to permanently delete the selected "
+     "files from the filesystem?"), button1, button2);
+
+    g_signal_connect (dialog, "destroy", (GCallback) gtk_widget_destroyed, & dialog);
+    gtk_widget_show_all (dialog);
+}
+
+static bool_t delete_files_init (void)
+{
+    for (int i = 0; i < G_N_ELEMENTS (menus); i ++)
+        aud_plugin_menu_add (menus[i], start_delete, _("Delete from Filesystem"), "edit-delete");
+
+    return TRUE;
+}
+
+static void delete_files_cleanup (void)
+{
+    if (dialog)
+        gtk_widget_destroy (dialog);
+
+    for (int i = 0; i < G_N_ELEMENTS (menus); i ++)
+        aud_plugin_menu_remove (menus[i], start_delete);
+}
+
+AUD_GENERAL_PLUGIN
+(
+    .name = N_("Delete from Filesystem"),
+    .domain = PACKAGE,
+    .init = delete_files_init,
+    .cleanup = delete_files_cleanup,
+)