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<?php
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
if ( ! interface_exists( 'JsonSerializable' ) ) {
define( 'SNAP_WP_JSON_SERIALIZE_COMPATIBLE', true );
/**
* JsonSerializable interface.
*
* Compatibility shim for PHP <5.4
*
* @link https://secure.php.net/jsonserializable
*
* @since 4.4.0
*/
interface JsonSerializable {
public function jsonSerialize();
}
}
if(!class_exists('SnapLibUtil')) {
class SnapLibUtil
{
public static function getArrayValue(&$array, $key, $required=true, $default=null)
{
if(array_key_exists($key, $array))
{
return $array[$key];
} else {
if($required) {
throw new Exception("Key {$key} not present in array");
} else {
return $default;
}
}
}
public static function getCallingFunctionName()
{
$callers = debug_backtrace();
$functionName = $callers[2]['function'];
$className = isset($callers[2]['class']) ? $callers[2]['class'] : '';
return "{$className}::{$functionName}";
}
public static function getWorkPercent($startingPercent, $endingPercent, $totalTaskCount, $currentTaskCount)
{
if($totalTaskCount > 0) {
$percent = floor($startingPercent + (($endingPercent - $startingPercent) * ($currentTaskCount / (float) $totalTaskCount)));
}
else {
$percent = 0;
}
return $percent;
}
public static function make_hash()
{
// IMPORTANT! Be VERY careful in changing this format - the FTP delete logic requires 3 segments with the last segment to be the date in YmdHis format.
try {
if (function_exists('random_bytes') && self::PHP53()) {
return bin2hex(random_bytes(8)) . mt_rand(1000, 9999) . '_' . date("YmdHis");
} else {
return strtolower(md5(uniqid(rand(), true))) . '_' . date("YmdHis");
}
} catch (Exception $exc) {
return strtolower(md5(uniqid(rand(), true))) . '_' . date("YmdHis");
}
}
public static function PHP53()
{
return version_compare(PHP_VERSION, '5.3.2', '>=');
}
/**
* Groups an array into arrays by a given key, or set of keys, shared between all array members.
*
* Based on {@author Jake Zatecky}'s {@link https://github.com/jakezatecky/array_group_by array_group_by()} function.
* This variant allows $key to be closures.
*
* @param array $array The array to have grouping performed on.
* @param mixed $key,... The key to group or split by. Can be a _string_, an _integer_, a _float_, or a _callable_.
* - If the key is a callback, it must return a valid key from the array.
* - If the key is _NULL_, the iterated element is skipped.
* - string|int callback ( mixed $item )
*
* @return array|null Returns a multidimensional array or `null` if `$key` is invalid.
*/
public static function arrayGroupBy(array $array, $key)
{
if (!is_string($key) && !is_int($key) && !is_float($key) && !is_callable($key) ) {
trigger_error('array_group_by(): The key should be a string, an integer, or a callback', E_USER_ERROR);
return null;
}
$func = (!is_string($key) && is_callable($key) ? $key : null);
$_key = $key;
// Load the new array, splitting by the target key
$grouped = array();
foreach ($array as $value) {
$key = null;
if (is_callable($func)) {
$key = call_user_func($func, $value);
} elseif (is_object($value) && isset($value->{$_key})) {
$key = $value->{$_key};
} elseif (isset($value[$_key])) {
$key = $value[$_key];
}
if ($key === null) {
continue;
}
$grouped[$key][] = $value;
}
// Recursively build a nested grouping if more parameters are supplied
// Each grouped array value is grouped according to the next sequential key
if (func_num_args() > 2) {
$args = func_get_args();
foreach ($grouped as $key => $value) {
$params = array_merge(array( $value ), array_slice($args, 2, func_num_args()));
$grouped[$key] = call_user_func_array('SnapLibUtil::arrayGroupBy', $params);
}
}
return $grouped;
}
/**
* Converts human readable types (10GB) to bytes
*
* @param string $from A human readable byte size such as 100MB
*
* @return int Returns and integer of the byte size
*/
public static function convertToBytes($from)
{
if ( is_numeric( $from) ) {
return $from;
}
$number = substr($from, 0, -2);
switch (strtoupper(substr($from, -2))) {
case "KB": return $number * 1024;
case "MB": return $number * pow(1024, 2);
case "GB": return $number * pow(1024, 3);
case "TB": return $number * pow(1024, 4);
case "PB": return $number * pow(1024, 5);
}
$number = substr($from, 0, -1);
switch (strtoupper(substr($from, -1))) {
case "K": return $number * 1024;
case "M": return $number * pow(1024, 2);
case "G": return $number * pow(1024, 3);
case "T": return $number * pow(1024, 4);
case "P": return $number * pow(1024, 5);
}
return $from;
}
/**
* Sanitize input for XSS code
*
* @param string $val The value to sanitize
*
* @return string Returns the input value cleaned up.
*/
public static function sanitize($input)
{
return filter_var($input, FILTER_SANITIZE_STRING);
}
/**
* Encode a variable into JSON, with some sanity checks.
*
* @since 4.1.0
*
* @param mixed $data Variable (usually an array or object) to encode as JSON.
* @param int $options Optional. Options to be passed to json_encode(). Default 0.
* @param int $depth Optional. Maximum depth to walk through $data. Must be
* greater than 0. Default 512.
* @return string|false The JSON encoded string, or false if it cannot be encoded.
*/
public static function wp_json_encode( $data, $options = 0, $depth = 512 ) {
/*
* json_encode() has had extra params added over the years.
* $options was added in 5.3, and $depth in 5.5.
* We need to make sure we call it with the correct arguments.
*/
if ( version_compare( PHP_VERSION, '5.5', '>=' ) ) {
$args = array( $data, $options, $depth );
} elseif ( version_compare( PHP_VERSION, '5.3', '>=' ) ) {
$args = array( $data, $options );
} else {
$args = array( $data );
}
// Prepare the data for JSON serialization.
$args[0] = self::_wp_json_prepare_data( $data );
$json = @call_user_func_array( 'json_encode', $args );
// If json_encode() was successful, no need to do more sanity checking.
// ... unless we're in an old version of PHP, and json_encode() returned
// a string containing 'null'. Then we need to do more sanity checking.
if ( false !== $json && ( version_compare( PHP_VERSION, '5.5', '>=' ) || false === strpos( $json, 'null' ) ) ) {
return $json;
}
try {
$args[0] = _wp_json_sanity_check( $data, $depth );
} catch ( Exception $e ) {
return false;
}
return call_user_func_array( 'json_encode', $args );
}
/**
* Prepares response data to be serialized to JSON.
*
* This supports the JsonSerializable interface for PHP 5.2-5.3 as well.
*
* @ignore
* @since 4.4.0
* @access private
*
* @param mixed $data Native representation.
* @return bool|int|float|null|string|array Data ready for `json_encode()`.
*/
private static function _wp_json_prepare_data( $data ) {
if ( ! defined( 'SNAP_WP_JSON_SERIALIZE_COMPATIBLE' ) || SNAP_WP_JSON_SERIALIZE_COMPATIBLE === false || ! defined( 'WP_JSON_SERIALIZE_COMPATIBLE' ) || WP_JSON_SERIALIZE_COMPATIBLE === false ) {
return $data;
}
switch ( gettype( $data ) ) {
case 'boolean':
case 'integer':
case 'double':
case 'string':
case 'NULL':
// These values can be passed through.
return $data;
case 'array':
// Arrays must be mapped in case they also return objects.
return array_map( 'self::_wp_json_prepare_data', $data );
case 'object':
// If this is an incomplete object (__PHP_Incomplete_Class), bail.
if ( ! is_object( $data ) ) {
return null;
}
if ( $data instanceof JsonSerializable ) {
$data = $data->jsonSerialize();
} else {
$data = get_object_vars( $data );
}
// Now, pass the array (or whatever was returned from jsonSerialize through).
return self::_wp_json_prepare_data( $data );
default:
return null;
}
}
}
}