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Differences Between: [Versions 310 and 402] [Versions 311 and 402] [Versions 39 and 402] [Versions 400 and 402] [Versions 401 and 402]

   1  <?php
   2  /*
   3   * Copyright 2011 Google Inc.
   4   *
   5   * Licensed under the Apache License, Version 2.0 (the "License");
   6   * you may not use this file except in compliance with the License.
   7   * You may obtain a copy of the License at
   8   *
   9   *     http://www.apache.org/licenses/LICENSE-2.0
  10   *
  11   * Unless required by applicable law or agreed to in writing, software
  12   * distributed under the License is distributed on an "AS IS" BASIS,
  13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14   * See the License for the specific language governing permissions and
  15   * limitations under the License.
  16   */
  17  
  18  /**
  19   * Collection of static utility methods used for convenience across
  20   * the client library.
  21   */
  22  #[AllowDynamicProperties]
  23  class Google_Utils
  24  {
  25    public static function urlSafeB64Encode($data)
  26    {
  27      $b64 = base64_encode($data);
  28      $b64 = str_replace(
  29          array('+', '/', '\r', '\n', '='),
  30          array('-', '_'),
  31          $b64
  32      );
  33      return $b64;
  34    }
  35  
  36    public static function urlSafeB64Decode($b64)
  37    {
  38      $b64 = str_replace(
  39          array('-', '_'),
  40          array('+', '/'),
  41          $b64
  42      );
  43      return base64_decode($b64);
  44    }
  45  
  46    /**
  47     * Misc function used to count the number of bytes in a post body, in the
  48     * world of multi-byte chars and the unpredictability of
  49     * strlen/mb_strlen/sizeof, this is the only way to do that in a sane
  50     * manner at the moment.
  51     *
  52     * This algorithm was originally developed for the
  53     * Solar Framework by Paul M. Jones
  54     *
  55     * @link   http://solarphp.com/
  56     * @link   http://svn.solarphp.com/core/trunk/Solar/Json.php
  57     * @link   http://framework.zend.com/svn/framework/standard/trunk/library/Zend/Json/Decoder.php
  58     * @param  string $str
  59     * @return int The number of bytes in a string.
  60     */
  61    public static function getStrLen($str)
  62    {
  63      $strlenVar = strlen($str);
  64      $d = $ret = 0;
  65      for ($count = 0; $count < $strlenVar; ++ $count) {
  66        $ordinalValue = ord($str[$ret]);
  67        switch (true) {
  68          case (($ordinalValue >= 0x20) && ($ordinalValue <= 0x7F)):
  69            // characters U-00000000 - U-0000007F (same as ASCII)
  70            $ret ++;
  71            break;
  72          case (($ordinalValue & 0xE0) == 0xC0):
  73            // characters U-00000080 - U-000007FF, mask 110XXXXX
  74            // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
  75            $ret += 2;
  76            break;
  77          case (($ordinalValue & 0xF0) == 0xE0):
  78            // characters U-00000800 - U-0000FFFF, mask 1110XXXX
  79            // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
  80            $ret += 3;
  81            break;
  82          case (($ordinalValue & 0xF8) == 0xF0):
  83            // characters U-00010000 - U-001FFFFF, mask 11110XXX
  84            // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
  85            $ret += 4;
  86            break;
  87          case (($ordinalValue & 0xFC) == 0xF8):
  88            // characters U-00200000 - U-03FFFFFF, mask 111110XX
  89            // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
  90            $ret += 5;
  91            break;
  92          case (($ordinalValue & 0xFE) == 0xFC):
  93            // characters U-04000000 - U-7FFFFFFF, mask 1111110X
  94            // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
  95            $ret += 6;
  96            break;
  97          default:
  98            $ret ++;
  99        }
 100      }
 101      return $ret;
 102    }
 103  
 104    /**
 105     * Normalize all keys in an array to lower-case.
 106     * @param array $arr
 107     * @return array Normalized array.
 108     */
 109    public static function normalize($arr)
 110    {
 111      if (!is_array($arr)) {
 112        return array();
 113      }
 114  
 115      $normalized = array();
 116      foreach ($arr as $key => $val) {
 117        $normalized[strtolower($key)] = $val;
 118      }
 119      return $normalized;
 120    }
 121  
 122    /**
 123     * Convert a string to camelCase
 124     * @param  string $value
 125     * @return string
 126     */
 127    public static function camelCase($value)
 128    {
 129      $value = ucwords(str_replace(array('-', '_'), ' ', $value));
 130      $value = str_replace(' ', '', $value);
 131      $value[0] = strtolower($value[0]);
 132      return $value;
 133    }
 134  }