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Differences Between: [Versions 311 and 402] [Versions 311 and 403]

   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  class Google_Utils
  23  {
  24    public static function urlSafeB64Encode($data)
  25    {
  26      $b64 = base64_encode($data);
  27      $b64 = str_replace(
  28          array('+', '/', '\r', '\n', '='),
  29          array('-', '_'),
  30          $b64
  31      );
  32      return $b64;
  33    }
  34  
  35    public static function urlSafeB64Decode($b64)
  36    {
  37      $b64 = str_replace(
  38          array('-', '_'),
  39          array('+', '/'),
  40          $b64
  41      );
  42      return base64_decode($b64);
  43    }
  44  
  45    /**
  46     * Misc function used to count the number of bytes in a post body, in the
  47     * world of multi-byte chars and the unpredictability of
  48     * strlen/mb_strlen/sizeof, this is the only way to do that in a sane
  49     * manner at the moment.
  50     *
  51     * This algorithm was originally developed for the
  52     * Solar Framework by Paul M. Jones
  53     *
  54     * @link   http://solarphp.com/
  55     * @link   http://svn.solarphp.com/core/trunk/Solar/Json.php
  56     * @link   http://framework.zend.com/svn/framework/standard/trunk/library/Zend/Json/Decoder.php
  57     * @param  string $str
  58     * @return int The number of bytes in a string.
  59     */
  60    public static function getStrLen($str)
  61    {
  62      $strlenVar = strlen($str);
  63      $d = $ret = 0;
  64      for ($count = 0; $count < $strlenVar; ++ $count) {
  65        $ordinalValue = ord($str[$ret]);
  66        switch (true) {
  67          case (($ordinalValue >= 0x20) && ($ordinalValue <= 0x7F)):
  68            // characters U-00000000 - U-0000007F (same as ASCII)
  69            $ret ++;
  70            break;
  71          case (($ordinalValue & 0xE0) == 0xC0):
  72            // characters U-00000080 - U-000007FF, mask 110XXXXX
  73            // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
  74            $ret += 2;
  75            break;
  76          case (($ordinalValue & 0xF0) == 0xE0):
  77            // characters U-00000800 - U-0000FFFF, mask 1110XXXX
  78            // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
  79            $ret += 3;
  80            break;
  81          case (($ordinalValue & 0xF8) == 0xF0):
  82            // characters U-00010000 - U-001FFFFF, mask 11110XXX
  83            // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
  84            $ret += 4;
  85            break;
  86          case (($ordinalValue & 0xFC) == 0xF8):
  87            // characters U-00200000 - U-03FFFFFF, mask 111110XX
  88            // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
  89            $ret += 5;
  90            break;
  91          case (($ordinalValue & 0xFE) == 0xFC):
  92            // characters U-04000000 - U-7FFFFFFF, mask 1111110X
  93            // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
  94            $ret += 6;
  95            break;
  96          default:
  97            $ret ++;
  98        }
  99      }
 100      return $ret;
 101    }
 102  
 103    /**
 104     * Normalize all keys in an array to lower-case.
 105     * @param array $arr
 106     * @return array Normalized array.
 107     */
 108    public static function normalize($arr)
 109    {
 110      if (!is_array($arr)) {
 111        return array();
 112      }
 113  
 114      $normalized = array();
 115      foreach ($arr as $key => $val) {
 116        $normalized[strtolower($key)] = $val;
 117      }
 118      return $normalized;
 119    }
 120  
 121    /**
 122     * Convert a string to camelCase
 123     * @param  string $value
 124     * @return string
 125     */
 126    public static function camelCase($value)
 127    {
 128      $value = ucwords(str_replace(array('-', '_'), ' ', $value));
 129      $value = str_replace(' ', '', $value);
 130      $value[0] = strtolower($value[0]);
 131      return $value;
 132    }
 133  }