updater: add basic support for migrating feed icons

plugins/updater/init.php

@@ -240,6 +240,26 @@ class Updater extends Plugin {
 					chmod($dir, 0777);
 				}
 
+				if (ICONS_DIR == "feed-icons") {
+					array_push($log, "Migrating feed icons...");
+
+					$icons = glob("$old_dir/feed-icons/*.ico");
+					$icons_copied = 0;
+
+					foreach ($icons as $icon) {
+						$icon = basename($icon);
+
+						if (copy("$old_dir/feed-icons/$icon", "$work_dir/feed-icons/$icon")) {
+							++$icons_copied;
+						}
+					}
+
+					array_push($log, "Done; $icons_copied files copied");
+
+				} else {
+					array_push($log, "Not migrating feed icons, ICONS_DIR modified.");
+				}
+
 				array_push($log, "Upgrade completed.");
 				array_push($log, "Your old tt-rss directory is saved at $old_dir. ".
 					"Please migrate locally modified files (if any) and remove it.");
@@ -278,10 +298,12 @@ class Updater extends Plugin {
 		_debug("Please backup your tt-rss directory before continuing. Your database will not be modified.");
 		_debug("Type 'yes' to continue.");
 
-		if (read_stdin() != 'yes')
+		$input = read_stdin();
+
+		if ($input != 'yes' && $input != 'force')
 			exit;
 
-		$this->update_self_cli($link, in_array("-force", $args));
+		$this->update_self_cli($link, $input == 'force');
 	}
 
 	function get_prefs_js() {