<?php
/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

class MessageBundleParser {

  private function processMessage(&$messages, $msg) {
    $attr = $msg->attributes();
    if (isset($attr['name'])) {
      $messages[trim($attr['name'])] = trim($msg);
    }
  }

  public function parse($xml) {
    $doc = @simplexml_load_string($xml);
    return $this->getMessages($doc);
  }

  public function getMessages($doc) {
    if (! $doc) {
      throw new Exception("Invalid XML structure in message bundle");
    }
    $messages = array();
    if (isset($doc->msg)) {
      foreach ($doc->msg as $msg) {
        $this->processMessage($messages, $msg);
      }
    }
    return $messages;
  }
}