modified file w3-total-cache
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<?php
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/**
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* File: Utils.php
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*
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* @package W3TC
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*/
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/**
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* Copyright 2011 Google Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/**
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* Collection of static utility methods used for convenience across
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* the client library.
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*
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* @author Chirag Shah <chirags@google.com>
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*/
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class W3TCG_Google_Utils {
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/**
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* URL safe base 64 encoder function
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*
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* @param string $data URL to be base 64 encoded.
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*
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* @return string
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*/
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public static function urlSafeB64Encode( $data ) { // phpcs:ignore WordPress.NamingConventions.ValidFunctionName.MethodNameInvalid
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$b64 = base64_encode( $data ); // phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions.obfuscation_base64_encode
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$b64 = str_replace(
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array( '+', '/', '\r', '\n', '=' ),
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array( '-', '_' ),
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$b64
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);
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return $b64;
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}
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/**
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* URL safe base 64 de-coder function
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*
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* @param string $b64 Base 64 encoded string.
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*
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* @return string
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*/
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public static function urlSafeB64Decode( $b64 ) { // phpcs:ignore WordPress.NamingConventions.ValidFunctionName.MethodNameInvalid
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$b64 = str_replace(
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array( '-', '_' ),
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array( '+', '/' ),
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$b64
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);
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return base64_decode( $b64 ); // phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions.obfuscation_base64_decode
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}
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/**
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* Misc function used to count the number of bytes in a post body, in the
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* world of multi-byte chars and the unpredictability of
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* strlen/mb_strlen/sizeof, this is the only way to do that in a sane
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* manner at the moment.
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*
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* This algorithm was originally developed for the
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* Solar Framework by Paul M. Jones
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*
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* @link http://solarphp.com/
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* @link http://svn.solarphp.com/core/trunk/Solar/Json.php
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* @link http://framework.zend.com/svn/framework/standard/trunk/library/Zend/Json/Decoder.php
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* @param string $str String to get length of.
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* @return int The number of bytes in a string.
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*/
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public static function getStrLen( $str ) { // phpcs:ignore WordPress.NamingConventions.ValidFunctionName.MethodNameInvalid
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$strlen_var = strlen( $str );
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$ret = 0;
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for ( $count = 0; $count < $strlen_var; ++ $count ) {
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$ordinal_value = ord( $str[ $ret ] );
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switch ( true ) {
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case ( ( $ordinal_value >= 0x20 ) && ( $ordinal_value <= 0x7F ) ):
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// characters U-00000000 - U-0000007F (same as ASCII).
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$ret ++;
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break;
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case ( ( $ordinal_value & 0xE0 ) === 0xC0 ):
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// characters U-00000080 - U-000007FF, mask 110XXXXX.
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// see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8.
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$ret += 2;
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break;
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case ( ( $ordinal_value & 0xF0 ) === 0xE0 ):
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// characters U-00000800 - U-0000FFFF, mask 1110XXXX.
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// see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8.
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$ret += 3;
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break;
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case ( ( $ordinal_value & 0xF8 ) === 0xF0 ):
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// characters U-00010000 - U-001FFFFF, mask 11110XXX.
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// see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8.
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$ret += 4;
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break;
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case ( ( $ordinal_value & 0xFC ) === 0xF8 ):
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// characters U-00200000 - U-03FFFFFF, mask 111110XX.
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// see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8.
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$ret += 5;
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break;
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case ( ( $ordinal_value & 0xFE ) === 0xFC ):
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// characters U-04000000 - U-7FFFFFFF, mask 1111110X.
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// see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8.
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$ret += 6;
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break;
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default:
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$ret ++;
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}
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}
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return $ret;
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}
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/**
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* Normalize all keys in an array to lower-case.
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*
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* @param array $arr Array to normalize all keys to lowercase.
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* @return array Normalized array.
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*/
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public static function normalize( $arr ) {
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if ( ! is_array( $arr ) ) {
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return array();
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}
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$normalized = array();
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foreach ( $arr as $key => $val ) {
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$normalized[ strtolower( $key ) ] = $val;
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}
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return $normalized;
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}
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/**
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* Convert a string to camelCase
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*
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* @param string $value String to convert to camelCase.
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* @return string
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*/
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public static function camelCase( $value ) { // phpcs:ignore WordPress.NamingConventions.ValidFunctionName.MethodNameInvalid
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$value = ucwords( str_replace( array( '-', '_' ), ' ', $value ) );
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$value = str_replace( ' ', '', $value );
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$value[0] = strtolower( $value[0] );
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return $value;
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}
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}
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