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Editing: Utils.php
<?php /* * Copyright 2011 Google Inc. * * Licensed 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. */ /** * Collection of static utility methods used for convenience across * the client library. */ class Google_Utils { public static function urlSafeB64Encode($data) { $b64 = base64_encode($data); $b64 = str_replace( array('+', '/', '\r', '\n', '='), array('-', '_'), $b64 ); return $b64; } public static function urlSafeB64Decode($b64) { $b64 = str_replace( array('-', '_'), array('+', '/'), $b64 ); return base64_decode($b64); } /** * Misc function used to count the number of bytes in a post body, in the * world of multi-byte chars and the unpredictability of * strlen/mb_strlen/sizeof, this is the only way to do that in a sane * manner at the moment. * * This algorithm was originally developed for the * Solar Framework by Paul M. Jones * * @link http://solarphp.com/ * @link http://svn.solarphp.com/core/trunk/Solar/Json.php * @link http://framework.zend.com/svn/framework/standard/trunk/library/Zend/Json/Decoder.php * @param string $str * @return int The number of bytes in a string. */ public static function getStrLen($str) { $strlenVar = strlen($str); $d = $ret = 0; for ($count = 0; $count < $strlenVar; ++ $count) { $ordinalValue = ord($str[$ret]); switch (true) { case (($ordinalValue >= 0x20) && ($ordinalValue <= 0x7F)): // characters U-00000000 - U-0000007F (same as ASCII) $ret ++; break; case (($ordinalValue & 0xE0) == 0xC0): // characters U-00000080 - U-000007FF, mask 110XXXXX // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8 $ret += 2; break; case (($ordinalValue & 0xF0) == 0xE0): // characters U-00000800 - U-0000FFFF, mask 1110XXXX // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8 $ret += 3; break; case (($ordinalValue & 0xF8) == 0xF0): // characters U-00010000 - U-001FFFFF, mask 11110XXX // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8 $ret += 4; break; case (($ordinalValue & 0xFC) == 0xF8): // characters U-00200000 - U-03FFFFFF, mask 111110XX // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8 $ret += 5; break; case (($ordinalValue & 0xFE) == 0xFC): // characters U-04000000 - U-7FFFFFFF, mask 1111110X // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8 $ret += 6; break; default: $ret ++; } } return $ret; } /** * Normalize all keys in an array to lower-case. * @param array $arr * @return array Normalized array. */ public static function normalize($arr) { if (!is_array($arr)) { return array(); } $normalized = array(); foreach ($arr as $key => $val) { $normalized[strtolower($key)] = $val; } return $normalized; } /** * Convert a string to camelCase * @param string $value * @return string */ public static function camelCase($value) { $value = ucwords(str_replace(array('-', '_'), ' ', $value)); $value = str_replace(' ', '', $value); $value[0] = strtolower($value[0]); return $value; } }
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