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<?php
/*
* TextWheel 0.1
*
* let's reinvent the wheel one last time
*
* This library of code is meant to be a fast and universal replacement
* for any and all text-processing systems written in PHP
*
* It is dual-licensed for any use under the GNU/GPL2 and MIT licenses,
* as suits you best
*
* (c) 2009 Fil - fil@rezo.net
* Documentation & http://zzz.rezo.net/-TextWheel-
*
* Usage: $wheel = new TextWheel(); echo $wheel->text($text);
*
*/
if (!defined('_ECRIRE_INC_VERSION')) return;
require_once dirname(__FILE__)."/textwheelruleset.php";
class TextWheel {
protected $ruleset;
protected static $subwheel = array();
protected $compiled = array();
/**
* Constructor
* @param TextWheelRuleSet $ruleset
*/
public function TextWheel($ruleset = null) {
$this->setRuleSet($ruleset);
}
/**
* Set RuleSet
* @param TextWheelRuleSet $ruleset
*/
public function setRuleSet($ruleset){
if (!is_object($ruleset))
$ruleset = new TextWheelRuleSet ($ruleset);
$this->ruleset = $ruleset;
}
/**
* Apply all rules of RuleSet to a text
*
* @param string $t
* @return string
*/
public function text($t) {
$rules = & $this->ruleset->getRules();
## apply each in order
foreach ($rules as $name => $rule) #php4+php5
{
$this->apply($rules[$name], $t);
}
#foreach ($this->rules as &$rule) #smarter &reference, but php5 only
# $this->apply($rule, $t);
return $t;
}
private function export($x) {
return addcslashes(var_export($x, true), "\n\r\t");
}
public function compile($b = null) {
$rules = & $this->ruleset->getRules();
## apply each in order
$pre = array();
$comp = array();
foreach ($rules as $name => $rule)
{
$rule->name = $name;
$this->initRule($rule);
if (is_string($rule->replace)
AND isset($this->compiled[$rule->replace])
AND $fun = $this->compiled[$rule->replace]) {
$pre[] = "\n###\n## $name\n###\n" . $fun;
preg_match(',function (\w+),', $fun, $r);
$rule->compilereplace = $r[1]; # ne pas modifier ->replace sinon on casse l'execution...
}
$r = "\t/* $name */\n";
if ($rule->require)
$r .= "\t".'require_once '.TextWheel::export($rule->require).';'."\n";
if ($rule->if_str)
$r .= "\t".'if (strpos($t, '.TextWheel::export($rule->if_str).') === false)'."\n";
if ($rule->if_stri)
$r .= "\t".'if (stripos($t, '.TextWheel::export($rule->if_stri).') === false)'."\n";
if ($rule->if_match)
$r .= "\t".'if (preg_match('.TextWheel::export($rule->if_match).', $t))'."\n";
if ($rule->func_replace !== 'replace_identity') {
$fun = 'TextWheel::'.$rule->func_replace;
switch($fun) {
case 'TextWheel::replace_all_cb':
$fun = $rule->replace; # trim()...
break;
case 'TextWheel::replace_preg':
$fun = 'preg_replace';
break;
case 'TextWheel::replace_str':
$fun = 'str_replace';
break;
case 'TextWheel::replace_preg_cb':
$fun = 'preg_replace_callback';
break;
default:
break;
}
$r .= "\t".'$t = '.$fun.'('.TextWheel::export($rule->match).', '.TextWheel::export($rule->replace).', $t);'."\n";
}
$comp[] = $r;
}
$code = join ("\n", $comp);
$code = 'function '.$b.'($t) {' . "\n". $code . "\n\treturn \$t;\n}\n\n";
$code = join ("\n", $pre) . $code;
return $code;
}
/**
* Get an internal global subwheel
* read acces for annymous function only
*
* @param int $n
* @return TextWheel
*/
public static function &getSubWheel($n){
return TextWheel::$subwheel[$n];
}
/**
* Create SubWheel (can be overriden in debug class)
* @param TextWheelRuleset $rules
* @return TextWheel
*/
protected function &createSubWheel(&$rules){
$tw = new TextWheel($rules);
return $tw;
}
/**
* Initializing a rule a first call
* including file, creating function or wheel
* optimizing tests
*
* @param TextWheelRule $rule
*/
protected function initRule(&$rule){
# language specific
if ($rule->require){
require_once $rule->require;
}
# optimization: strpos or stripos?
if (isset($rule->if_str)) {
if (strtolower($rule->if_str) !== strtoupper($rule->if_str)) {
$rule->if_stri = $rule->if_str;
unset($rule->if_str);
}
}
if ($rule->create_replace){
$compile = $rule->replace.'($t)';
$rule->replace = create_function('$m', $rule->replace);
$this->compiled[$rule->replace] = $compile;
$rule->create_replace = false;
$rule->is_callback = true;
}
elseif ($rule->is_wheel){
$n = count(TextWheel::$subwheel);
TextWheel::$subwheel[] = $this->createSubWheel($rule->replace);
$var = '$m['.intval($rule->pick_match).']';
if ($rule->type=='all' OR $rule->type=='str' OR $rule->type=='split' OR !isset($rule->match))
$var = '$m';
$code = 'return TextWheel::getSubWheel('.$n.')->text('.$var.');';
$rule->replace = create_function('$m', $code);
$cname = 'compiled_'.str_replace('-','_', $rule->name);
$compile = TextWheel::getSubWheel($n)->compile($cname);
$this->compiled[$rule->replace] = $compile;
$rule->is_wheel = false;
$rule->is_callback = true;
}
# optimization
$rule->func_replace = '';
if (isset($rule->replace)) {
switch($rule->type) {
case 'all':
$rule->func_replace = 'replace_all';
break;
case 'str':
$rule->func_replace = 'replace_str';
// test if quicker strtr usable
if (!$rule->is_callback
AND is_array($rule->match) AND is_array($rule->replace)
AND $c = array_map('strlen',$rule->match)
AND $c = array_unique($c)
AND count($c)==1
AND reset($c)==1
AND $c = array_map('strlen',$rule->replace)
AND $c = array_unique($c)
AND count($c)==1
AND reset($c)==1
){
$rule->match = implode('',$rule->match);
$rule->replace = implode('',$rule->replace);
$rule->func_replace = 'replace_strtr';
}
break;
case 'split':
$rule->func_replace = 'replace_split';
$rule->match = array($rule->match, is_null($rule->glue)?$rule->match:$rule->glue);
break;
case 'preg':
default:
$rule->func_replace = 'replace_preg';
break;
}
if ($rule->is_callback)
$rule->func_replace .= '_cb';
}
if (!method_exists("TextWheel", $rule->func_replace)){
$rule->disabled = true;
$rule->func_replace = 'replace_identity';
}
# /end
}
/**
* Apply a rule to a text
*
* @param TextWheelRule $rule
* @param string $t
* @param int $count
*/
protected function apply(&$rule, &$t, &$count=null) {
if ($rule->disabled)
return;
if (isset($rule->if_chars) AND (strpbrk($t, $rule->if_chars) === false))
return;
if (isset($rule->if_match) AND !preg_match($rule->if_match, $t))
return;
// init rule before testing if_str / if_stri as they are optimized by initRule
if (!isset($rule->func_replace))
$this->initRule($rule);
if (isset($rule->if_str) AND strpos($t, $rule->if_str) === false)
return;
if (isset($rule->if_stri) AND stripos($t, $rule->if_stri) === false)
return;
$func = $rule->func_replace;
TextWheel::$func($rule->match,$rule->replace,$t,$count);
}
/**
* No Replacement function
* fall back in case of unknown method for replacing
* should be called max once per rule
*
* @param mixed $match
* @param mixed $replace
* @param string $t
* @param int $count
*/
protected static function replace_identity(&$match,&$replace,&$t,&$count){
}
/**
* Static replacement of All text
* @param mixed $match
* @param mixed $replace
* @param string $t
* @param int $count
*/
protected static function replace_all(&$match,&$replace,&$t,&$count){
# special case: replace $0 with $t
# replace: "A$0B" will surround the string with A..B
# replace: "$0$0" will repeat the string
if (strpos($replace, '$0')!==FALSE)
$t = str_replace('$0', $t, $replace);
else
$t = $replace;
}
/**
* Call back replacement of All text
* @param mixed $match
* @param mixed $replace
* @param string $t
* @param int $count
*/
protected static function replace_all_cb(&$match,&$replace,&$t,&$count){
$t = $replace($t);
}
/**
* Static string replacement
*
* @param mixed $match
* @param mixed $replace
* @param string $t
* @param int $count
*/
protected static function replace_str(&$match,&$replace,&$t,&$count){
if (!is_string($match) OR strpos($t,$match)!==FALSE)
$t = str_replace($match, $replace, $t, $count);
}
/**
* Fast Static string replacement one char to one char
*
* @param mixed $match
* @param mixed $replace
* @param string $t
* @param int $count
*/
protected static function replace_strtr(&$match,&$replace,&$t,&$count){
$t = strtr( $t, $match, $replace);
}
/**
* Callback string replacement
*
* @param mixed $match
* @param mixed $replace
* @param string $t
* @param int $count
*/
protected static function replace_str_cb(&$match,&$replace,&$t,&$count){
if (strpos($t,$match)!==FALSE)
if (count($b = explode($match, $t)) > 1)
$t = join($replace($match), $b);
}
/**
* Static Preg replacement
*
* @param mixed $match
* @param mixed $replace
* @param string $t
* @param int $count
*/
protected static function replace_preg(&$match,&$replace,&$t,&$count){
$t = preg_replace($match, $replace, $t, -1, $count);
}
/**
* Callback Preg replacement
* @param mixed $match
* @param mixed $replace
* @param string $t
* @param int $count
*/
protected static function replace_preg_cb(&$match,&$replace,&$t,&$count){
$t = preg_replace_callback($match, $replace, $t, -1, $count);
}
/**
* Static split replacement : invalid
* @param mixed $match
* @param mixed $replace
* @param string $t
* @param int $count
*/
protected static function replace_split(&$match,&$replace,&$t,&$count){
throw new InvalidArgumentException('split rule always needs a callback function as replace');
}
/**
* Callback split replacement
* @param array $match
* @param mixed $replace
* @param string $t
* @param int $count
*/
protected static function replace_split_cb(&$match,&$replace,&$t,&$count){
$a = explode($match[0], $t);
$t = join($match[1], array_map($replace,$a));
}
}
class TextWheelDebug extends TextWheel {
static protected $t; #tableaux des temps
static protected $tu; #tableaux des temps (rules utilises)
static protected $tnu; #tableaux des temps (rules non utilises)
static protected $u; #compteur des rules utiles
static protected $w; #compteur des rules appliques
static $total;
/**
* Timer for profiling
*
* @staticvar int $time
* @param string $t
* @param bool $raw
* @return int/strinf
*/
protected function timer($t='rien', $raw = false) {
static $time;
$a=time(); $b=microtime();
// microtime peut contenir les microsecondes et le temps
$b=explode(' ',$b);
if (count($b)==2) $a = end($b); // plus precis !
$b = reset($b);
if (!isset($time[$t])) {
$time[$t] = $a + $b;
} else {
$p = ($a + $b - $time[$t]) * 1000;
unset($time[$t]);
if ($raw) return $p;
if ($p < 1000)
$s = '';
else {
$s = sprintf("%d ", $x = floor($p/1000));
$p -= ($x*1000);
}
return $s . sprintf("%.3f ms", $p);
}
}
/**
* Apply all rules of RuleSet to a text
*
* @param string $t
* @return string
*/
public function text($t) {
$rules = & $this->ruleset->getRules();
## apply each in order
foreach ($rules as $name => $rule) #php4+php5
{
if (is_int($name))
$name .= ' '.$rule->match;
$this->timer($name);
$b = $t;
$this->apply($rule, $t);
TextWheelDebug::$w[$name] ++; # nombre de fois appliquee
$v = $this->timer($name, true); # timer
TextWheelDebug::$t[$name] += $v;
if ($t !== $b) {
TextWheelDebug::$u[$name] ++; # nombre de fois utile
TextWheelDebug::$tu[$name] += $v;
} else {
TextWheelDebug::$tnu[$name] += $v;
}
}
#foreach ($this->rules as &$rule) #smarter &reference, but php5 only
# $this->apply($rule, $t);
return $t;
}
/**
* Ouputs data stored for profiling/debuging purposes
*/
public static function outputDebug(){
if (isset(TextWheelDebug::$t)) {
$time = array_flip(array_map('strval', TextWheelDebug::$t));
krsort($time);
echo "
<div class='textwheeldebug'>
<style type='text/css'>
.textwheeldebug table { margin:1em 0; }
.textwheeldebug th,.textwheeldebug td { padding-left: 15px }
.textwheeldebug .prof-0 .number { padding-right: 60px }
.textwheeldebug .prof-1 .number { padding-right: 30px }
.textwheeldebug .prof-1 .name { padding-left: 30px }
.textwheeldebug .prof-2 .name { padding-left: 60px }
.textwheeldebug .zero { color:orange; }
.textwheeldebug .number { text-align:right; }
.textwheeldebug .strong { font-weight:bold; }
</style>
<table class='sortable'>
<caption>Temps par rule</caption>
<thead><tr><th>temps (ms)</th><th>rule</th><th>application</th><th>t/u (ms)</th><th>t/n-u (ms)</th></tr></thead>\n";
$total = 0;
foreach($time as $t => $r) {
$applications = intval(TextWheelDebug::$u[$r]);
$total += $t;
if(intval($t*10))
echo "<tr>
<td class='number strong'>".number_format(round($t*10)/10,1)."</td><td> ".spip_htmlspecialchars($r)."</td>
<td"
. (!$applications ? " class='zero'" : "")
.">".$applications."/".intval(TextWheelDebug::$w[$r])."</td>
<td class='number'>".($applications?number_format(round(TextWheelDebug::$tu[$r]/$applications*100)/100,2):"") ."</td>
<td class='number'>".(($nu = intval(TextWheelDebug::$w[$r])-$applications)?number_format(round(TextWheelDebug::$tnu[$r]/$nu*100)/100,2):"") ."</td>
</tr>";
}
echo "</table>\n";
echo "
<table>
<caption>Temps total par rule</caption>
<thead><tr><th>temps</th><th>rule</th></tr></thead>\n";
ksort($GLOBALS['totaux']);
TextWheelDebug::outputTotal($GLOBALS['totaux']);
echo "</table>";
# somme des temps des rules, ne tient pas compte des subwheels
echo "<p>temps total rules: ".round($total)." ms</p>\n";
echo "</div>\n";
}
}
public static function outputTotal($liste, $profondeur=0) {
ksort($liste);
foreach ($liste as $cause => $duree) {
if (is_array($duree)) {
TextWheelDebug::outputTotal($duree, $profondeur+1);
} else {
echo "<tr class='prof-$profondeur'>
<td class='number'><b>".intval($duree)."</b> ms</td>
<td class='name'>".spip_htmlspecialchars($cause)."</td>
</tr>\n";
}
}
}
/**
* Create SubWheel (can be overriden in debug class)
* @param TextWheelRuleset $rules
* @return TextWheel
*/
protected function &createSubWheel(&$rules){
return new TextWheelDebug($rules);
}
}
/**
* stripos for php4
*/
if (!function_exists('stripos')) {
function stripos($haystack, $needle) {
return strpos($haystack, stristr( $haystack, $needle ));
}
}
/**
* approximation of strpbrk for php4
* return false if no char of $char_list is in $haystack
*/
if (!function_exists('strpbrk')) {
function strpbrk($haystack, $char_list) {
$result = strcspn($haystack, $char_list);
if ($result != strlen($haystack)) {
return $result;
}
return false;
}
}