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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 __DIR__ . '/textwheelruleset.php';
class TextWheel {
protected $ruleset;
protected static $subwheel = [];
// Experimental : projet de compilation PHP d'une wheel
// pour generation d'un fichier php execute a la place de ->text()
protected $compiled = [];
/**
* Constructor
*
* @param TextWheelRuleSet $ruleset
*/
public function __construct($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 $t;
}
private static function export($x) {
return addcslashes(var_export($x, true), "\n\r\t");
}
public function compile($b = null) {
$rules = &$this->ruleset->getRules();
## apply each in order
$pre = [];
$comp = [];
foreach ($rules as $name => $rule) {
$rule->name = $name;
$this->initRule($rule);
if (
$rule->replace
and $compiledEntry = $this->ruleCompiledEntryName($rule->replace)
and isset($this->compiled[$compiledEntry])
and $fun = $this->compiled[$compiledEntry]
) {
$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;
$call = '';
switch ($fun) {
case 'TextWheel::replace_all_cb':
if (is_string($rule->replace)) {
$fun = $rule->replace;
}
elseif ($rule->compilereplace) {
$fun = trim($rule->compilereplace, "'");
};
if ($fun) {
$call = "\$t = $fun(\$t);";
}
break;
case 'TextWheel::replace_preg':
$fun = 'preg_replace';
break;
case 'TextWheel::replace_str':
$fun = 'str_replace';
break;
case 'TextWheel::replace_preg_cb':
$fun = 'preg_replace_callback';
break;
default:
break;
}
if (!$call) {
if (empty($rule->compilereplace)) {
$rule->compilereplace = TextWheel::export($rule->replace);
}
$call = '$t = ' . $fun . '(' . TextWheel::export($rule->match) . ', ' . $rule->compilereplace . ', $t);';
}
$r .= "\t$call\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;
}
/**
* @param $replace
* @return string
*/
protected function ruleCompiledEntryName($replace) {
if (is_array($replace)) {
return serialize($replace);
}
elseif (is_object($replace)) {
return get_class($replace) . ':' . spl_object_hash($replace);
}
return $replace;
}
/**
* 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;
$rule->if_str = null;
}
}
if ($rule->create_replace) {
// FORBIDDEN : rule->create_replace n'est plus supportée
$rule->disabled = true;
throw new Exception('Les règles de type create_replace ne sont plus autorisée (Règle '.($rule->name ?? '' . ' / ' . $rule->replace).')');
}
elseif ($rule->is_wheel) {
$rule_number = count(TextWheel::$subwheel);
TextWheel::$subwheel[] = $this->createSubWheel($rule->replace);
$cname = 'compiled_' . str_replace('-', '_', $rule->name ?? '') . '_' . substr(md5(spl_object_hash($rule)), 0, 7);
if ($rule->type == 'all' or $rule->type == 'str' or $rule->type == 'split' or !isset($rule->match)) {
$rule->replace = fn($m) => TextWheel::getSubWheel($rule_number)->text($m);
$rule->compilereplace = "'$cname'";
}
else {
$pick_match = intval($rule->pick_match);
$rule->replace = fn($m) => TextWheel::getSubWheel($rule_number)->text($m[$pick_match]);
$rule->compilereplace = 'function ($m) { return ' . $cname . '($m[' . $pick_match . ']) }';
}
$rule->is_wheel = false;
$rule->is_callback = true;
$compile = TextWheel::getSubWheel($rule_number)->compile($cname);
$this->compiled[$this->ruleCompiledEntryName($rule->replace)] = $compile;
}
# 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';
$rule->match = [$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, (string) $rule->if_str) === false) {
return;
}
if (isset($rule->if_stri) and stripos($t, (string) $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, (string) $match) !== false) {
if (count($b = explode($match, $t)) > 1) {
$t = join($replace($match), $b);
}
}
}
/**
* Static Preg replacement
*
* @param mixed $match
* @param mixed $replace
* @param string $t
* @param int $count
* @throws Exception
*/
protected static function replace_preg(&$match, &$replace, &$t, &$count) {
$t = preg_replace($match, $replace, $t, -1, $count);
if (is_null($t)) {
throw new Exception('Memory error, increase pcre.backtrack_limit in php.ini');
}
}
/**
* Callback Preg replacement
*
* @param mixed $match
* @param mixed $replace
* @param string $t
* @param int $count
* @throws Exception
*/
protected static function replace_preg_cb(&$match, &$replace, &$t, &$count) {
$t = preg_replace_callback($match, $replace, $t, -1, $count);
if (is_null($t)) {
throw new Exception('Memory error, increase pcre.backtrack_limit in php.ini');
}
}
/**
* 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 {
protected static $t; #tableaux des temps
protected static $tu; #tableaux des temps (rules utilises)
protected static $tnu; #tableaux des temps (rules non utilises)
protected static $u; #compteur des rules utiles
protected static $w; #compteur des rules appliques
public 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, (string) stristr($haystack, (string) $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;
}
}