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<?php
/*
Copyright (c) 2009-2014 F3::Factory/Bong Cosca, All rights reserved.
This file is part of the Fat-Free Framework (http://fatfree.sf.net).
THE SOFTWARE AND DOCUMENTATION ARE PROVIDED "AS IS" WITHOUT WARRANTY OF
ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR
PURPOSE.
Please see the license.txt file for more information.
*/
//! Unicode string manager
class UTF extends Prefab {
/**
* Get string length
* @return int
* @param $str string
**/
function strlen($str) {
preg_match_all('/./us',$str,$parts);
return count($parts[0]);
}
/**
* Reverse a string
* @return string
* @param $str string
**/
function strrev($str) {
preg_match_all('/./us',$str,$parts);
return implode('',array_reverse($parts[0]));
}
/**
* Find position of first occurrence of a string (case-insensitive)
* @return int|FALSE
* @param $stack string
* @param $needle string
* @param $ofs int
**/
function stripos($stack,$needle,$ofs=0) {
return $this->strpos($stack,$needle,$ofs,TRUE);
}
/**
* Find position of first occurrence of a string
* @return int|FALSE
* @param $stack string
* @param $needle string
* @param $ofs int
* @param $case bool
**/
function strpos($stack,$needle,$ofs=0,$case=FALSE) {
return preg_match('/^(.{'.$ofs.'}.*?)'.
preg_quote($needle,'/').'/us'.($case?'i':''),$stack,$match)?
$this->strlen($match[1]):FALSE;
}
/**
* Returns part of haystack string from the first occurrence of
* needle to the end of haystack (case-insensitive)
* @return string|FALSE
* @param $stack string
* @param $needle string
* @param $before bool
**/
function stristr($stack,$needle,$before=FALSE) {
return $this->strstr($stack,$needle,$before,TRUE);
}
/**
* Returns part of haystack string from the first occurrence of
* needle to the end of haystack
* @return string|FALSE
* @param $stack string
* @param $needle string
* @param $before bool
* @param $case bool
**/
function strstr($stack,$needle,$before=FALSE,$case=FALSE) {
if (!$needle)
return FALSE;
preg_match('/^(.*?)'.preg_quote($needle,'/').'/us'.($case?'i':''),
$stack,$match);
return isset($match[1])?
($before?
$match[1]:
$this->substr($stack,$this->strlen($match[1]))):
FALSE;
}
/**
* Return part of a string
* @return string|FALSE
* @param $str string
* @param $start int
* @param $len int
**/
function substr($str,$start,$len=0) {
if ($start<0)
$start=$this->strlen($str)+$start;
if (!$len)
$len=$this->strlen($str)-$start;
return preg_match('/^.{'.$start.'}(.{0,'.$len.'})/us',$str,$match)?
$match[1]:FALSE;
}
/**
* Count the number of substring occurrences
* @return int
* @param $stack string
* @param $needle string
**/
function substr_count($stack,$needle) {
preg_match_all('/'.preg_quote($needle,'/').'/us',$stack,
$matches,PREG_SET_ORDER);
return count($matches);
}
/**
* Strip whitespaces from the beginning of a string
* @return string
* @param $str string
**/
function ltrim($str) {
return preg_replace('/^[\pZ\pC]+/u','',$str);
}
/**
* Strip whitespaces from the end of a string
* @return string
* @param $str string
**/
function rtrim($str) {
return preg_replace('/[\pZ\pC]+$/u','',$str);
}
/**
* Strip whitespaces from the beginning and end of a string
* @return string
* @param $str string
**/
function trim($str) {
return preg_replace('/^[\pZ\pC]+|[\pZ\pC]+$/u','',$str);
}
/**
* Return UTF-8 byte order mark
* @return string
**/
function bom() {
return chr(0xef).chr(0xbb).chr(0xbf);
}
/**
* Convert code points to Unicode symbols
* @return string
* @param $str string
**/
function translate($str) {
return html_entity_decode(
preg_replace('/\\\\u([[:xdigit:]]+)/i','&#x\1;',$str));
}
/**
* Translate emoji tokens to Unicode font-supported symbols
* @return string
* @param $str string
**/
function emojify($str) {
$map=array(
':('=>'\u2639', // frown
':)'=>'\u263a', // smile
'<3'=>'\u2665', // heart
':D'=>'\u1f603', // grin
'XD'=>'\u1f606', // laugh
';)'=>'\u1f609', // wink
':P'=>'\u1f60b', // tongue
':,'=>'\u1f60f', // think
':/'=>'\u1f623', // skeptic
'8O'=>'\u1f632', // oops
)+Base::instance()->get('EMOJI');
return $this->translate(str_replace(array_keys($map),
array_values($map),$str));
}
}
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