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[autoinstallsdev/mediawiki.git] / vendor / wikimedia / avro / lib / avro / util.php

diff --git a/vendor/wikimedia/avro/lib/avro/util.php b/vendor/wikimedia/avro/lib/avro/util.php
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+<?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.
+ */
+
+/**
+ * @package Avro
+ */
+
+/**
+ * Class for static utility methods used in Avro.
+ *
+ * @package Avro
+ */
+class AvroUtil
+{
+  /**
+   * Determines whether the given array is an associative array
+   * (what is termed a map, hash, or dictionary in other languages)
+   * or a list (an array with monotonically increasing integer indicies
+   * starting with zero).
+   *
+   * @param array $ary array to test
+   * @returns true if the array is a list and false otherwise.
+   *
+   */
+  static function is_list($ary)
+  {
+    if (is_array($ary))
+    {
+      $i = 0;
+      foreach ($ary as $k => $v)
+      {
+        if ($i !== $k)
+          return false;
+        $i++;
+      }
+      return true;
+    }
+    return false;
+  }
+
+  /**
+   * @param array $ary
+   * @param string $key
+   * @returns mixed the value of $ary[$key] if it is set,
+   *                and null otherwise.
+   */
+  static function array_value($ary, $key)
+  {
+    return isset($ary[$key]) ? $ary[$key] : null;
+  }
+}