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<?php /* * Copyright 2010-2011 Amazon.com, Inc. or its affiliates. All Rights Reserved. * * Licensed under the Apache License, Version 2.0 (the "License"). * You may not use this file except in compliance with the License. * A copy of the License is located at * * http://aws.amazon.com/apache2.0 * * or in the "license" file accompanying this file. This file 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. */ /*%******************************************************************************************%*/ // CLASS /** * Contains a set of utility methods for connecting to, and working with, AWS. * * @version 2010.09.30 * @license See the included NOTICE.md file for more information. * @copyright See the included NOTICE.md file for more information. * @link http://aws.amazon.com/php/ PHP Developer Center */ class CFUtilities { /*%******************************************************************************************%*/ // CONSTANTS /** * Define the RFC 2616-compliant date format. */ const DATE_FORMAT_RFC2616 = 'D, d M Y H:i:s \G\M\T'; /** * Define the ISO-8601-compliant date format. */ const DATE_FORMAT_ISO8601 = 'Y-m-d\TH:i:s\Z'; /** * Define the MySQL-compliant date format. */ const DATE_FORMAT_MYSQL = 'Y-m-d H:i:s'; /*%******************************************************************************************%*/ // METHODS /** * Constructs a new instance of this class. * * @return $this A reference to the current instance. */ public function __construct() { return $this; } /** * Retrieves the value of a class constant, while avoiding the `T_PAAMAYIM_NEKUDOTAYIM` error. Misspelled because `const` is a reserved word. * * @param object $class (Required) An instance of the class containing the constant. * @param string $const (Required) The name of the constant to retrieve. * @return mixed The value of the class constant. */ public function konst($class, $const) { if (is_string($class)) { $ref = new ReflectionClass($class); } else { $ref = new ReflectionObject($class); } return $ref->getConstant($const); } /** * Convert a HEX value to Base64. * * @param string $str (Required) Value to convert. * @return string Base64-encoded string. */ public function hex_to_base64($str) { $raw = ''; for ($i = 0; $i < strlen($str); $i += 2) { $raw .= chr(hexdec(substr($str, $i, 2))); } return base64_encode($raw); } /** * Convert an associative array into a query string. * * @param array $array (Required) Array to convert. * @return string URL-friendly query string. */ public function to_query_string($array) { $temp = array(); foreach ($array as $key => $value) { if (is_string($key) && !is_array($value)) { $temp[] = rawurlencode($key) . '=' . rawurlencode($value); } } return implode('&', $temp); } /** * Convert an associative array into a sign-able string. * * @param array $array (Required) Array to convert. * @return string URL-friendly sign-able string. */ public function to_signable_string($array) { $t = array(); foreach ($array as $k => $v) { $t[] = $this->encode_signature2($k) . '=' . $this->encode_signature2($v); } return implode('&', $t); } /** * Encode the value according to RFC 3986. * * @param string $string (Required) String to convert. * @return string URL-friendly sign-able string. */ public function encode_signature2($string) { $string = rawurlencode($string); return str_replace('%7E', '~', $string); } /** * Convert a query string into an associative array. Multiple, identical keys will become an indexed array. * * @param string $qs (Required) Query string to convert. * @return array Associative array of keys and values. */ public function query_to_array($qs) { $query = explode('&', $qs); $data = array(); foreach ($query as $q) { $q = explode('=', $q); if (isset($data[$q[0]]) && is_array($data[$q[0]])) { $data[$q[0]][] = urldecode($q[1]); } else if (isset($data[$q[0]]) && !is_array($data[$q[0]])) { $data[$q[0]] = array($data[$q[0]]); $data[$q[0]][] = urldecode($q[1]); } else { $data[urldecode($q[0])] = urldecode($q[1]); } } return $data; } /** * Return human readable file sizes. * * @author Aidan Lister <aidan@php.net> * @author Ryan Parman <ryan@getcloudfusion.com> * @license http://www.php.net/license/3_01.txt PHP License * @param integer $size (Required) Filesize in bytes. * @param string $unit (Optional) The maximum unit to use. Defaults to the largest appropriate unit. * @param string $default (Optional) The format for the return string. Defaults to `%01.2f %s`. * @return string The human-readable file size. * @link http://aidanlister.com/repos/v/function.size_readable.php Original Function */ public function size_readable($size, $unit = null, $default = null) { // Units $sizes = array('B', 'kB', 'MB', 'GB', 'TB', 'PB', 'EB'); $mod = 1024; $ii = count($sizes) - 1; // Max unit $unit = array_search((string) $unit, $sizes); if ($unit === null || $unit === false) { $unit = $ii; } // Return string if ($default === null) { $default = '%01.2f %s'; } // Loop $i = 0; while ($unit != $i && $size >= 1024 && $i < $ii) { $size /= $mod; $i++; } return sprintf($default, $size, $sizes[$i]); } /** * Convert a number of seconds into Hours:Minutes:Seconds. * * @param integer $seconds (Required) The number of seconds to convert. * @return string The formatted time. */ public function time_hms($seconds) { $time = ''; // First pass $hours = (int) ($seconds / 3600); $seconds = $seconds % 3600; $minutes = (int) ($seconds / 60); $seconds = $seconds % 60; // Cleanup $time .= ($hours) ? $hours . ':' : ''; $time .= ($minutes < 10 && $hours > 0) ? '0' . $minutes : $minutes; $time .= ':'; $time .= ($seconds < 10) ? '0' . $seconds : $seconds; return $time; } /** * Returns the first value that is set. Based on [Try.these()](http://api.prototypejs.org/language/Try/these/) from [Prototype](http://prototypejs.org). * * @param array $attrs (Required) The attributes to test, as strings. Intended for testing properties of the $base object, but also works with variables if you place an @ symbol at the beginning of the command. * @param object $base (Optional) The base object to use, if any. * @param mixed $default (Optional) What to return if there are no matches. Defaults to `null`. * @return mixed Either a matching property of a given object, boolean `false`, or any other data type you might choose. */ public function try_these($attrs, $base = null, $default = null) { if ($base) { foreach ($attrs as $attr) { if (isset($base->$attr)) { return $base->$attr; } } } else { foreach ($attrs as $attr) { if (isset($attr)) { return $attr; } } } return $default; } /** * Can be removed once all calls are updated. * * @deprecated Use <php:json_encode()> instead. * @param mixed $obj (Required) The PHP object to convert into a JSON string. * @return string A JSON string. */ public function json_encode($obj) { return json_encode($obj); } /** * Converts a SimpleXML response to an array structure. * * @param ResponseCore $response (Required) A response value. * @return array The response value as a standard, multi-dimensional array. */ public function convert_response_to_array(ResponseCore $response) { return json_decode(json_encode($response), true); } /** * Checks to see if a date stamp is ISO-8601 formatted, and if not, makes it so. * * @param string $datestamp (Required) A date stamp, or a string that can be parsed into a date stamp. * @return string An ISO-8601 formatted date stamp. */ public function convert_date_to_iso8601($datestamp) { if (!preg_match('/\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}((\+|-)\d{2}:\d{2}|Z)/m', $datestamp)) { return gmdate(self::DATE_FORMAT_ISO8601, strtotime($datestamp)); } return $datestamp; } /** * Determines whether the data is Base64 encoded or not. * * @license http://us.php.net/manual/en/function.base64-decode.php#81425 PHP License * @param string $s (Required) The string to test. * @return boolean Whether the string is Base64 encoded or not. */ public function is_base64($s) { return (bool) preg_match('/^[a-zA-Z0-9\/\r\n+]*={0,2}$/', $s); } /** * Determines whether the data is a JSON string or not. * * @param string $s (Required) The string to test. * @return boolean Whether the string is a valid JSON object or not. */ public function is_json($s) { return !!(json_decode($s) instanceof stdClass); } /** * Decodes `\uXXXX` entities into their real unicode character equivalents. * * @param string $s (Required) The string to decode. * @return string The decoded string. */ public function decode_uhex($s) { preg_match_all('/\\\u([0-9a-f]{4})/i', $s, $matches); $matches = $matches[count($matches) - 1]; $map = array(); foreach ($matches as $match) { if (!isset($map[$match])) { $map['\u' . $match] = html_entity_decode('&#' . hexdec($match) . ';', ENT_NOQUOTES, 'UTF-8'); } } return str_replace(array_keys($map), $map, $s); } /** * Generates a random GUID. * * @author Alix Axel <http://www.php.net/manual/en/function.com-create-guid.php#99425> * @license http://www.php.net/license/3_01.txt PHP License * @return string A random GUID. */ public function generate_guid() { return sprintf( '%04X%04X-%04X-%04X-%04X-%04X%04X%04X', mt_rand(0, 65535), mt_rand(0, 65535), mt_rand(0, 65535), mt_rand(16384, 20479), mt_rand(32768, 49151), mt_rand(0, 65535), mt_rand(0, 65535), mt_rand(0, 65535) ); } }