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Minify_HTML code cleanup and minimal docblock.

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This commit is contained in:
Steve Clay
2008-07-31 16:03:04 +00:00
parent 7e1f77f5d0
commit 1e04e2c68e
1 changed files with 40 additions and 51 deletions
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91
lib/Minify/HTML.php
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@@ -7,11 +7,11 @@
/**
* Compress HTML
*
* This is a heavy regex-based removal of whitespace, unnecessary
* comments and tokens.
* This is a heavy regex-based removal of whitespace, unnecessary comments and
* tokens. IE conditional comments are preserved. There are also options to have
* STYLE and SCRIPT blocks compressed by callback functions.
*
* IE conditional comments are preserved. There are also options to have STYLE
* and SCRIPT blocks compressed by callback functions. A test suite is available.
* A test suite is available.
*
* @package Minify
* @author Stephen Clay <steve@mrclay.org>
@@ -21,10 +21,11 @@ class Minify_HTML {
/**
* "Minify" an HTML page
*
* @todo: To also minify embedded Javascript/CSS, you must...
*
* @param string $html
* @param array $options
* @return string
*/
public static function minify($string, $options = array()) {
public static function minify($html, $options = array()) {
if (isset($options['cssMinifier'])) {
self::$_cssMinifier = $options['cssMinifier'];
@@ -33,32 +34,35 @@ class Minify_HTML {
self::$_jsMinifier = $options['jsMinifier'];
}
$html = trim($string);
$html = trim($html);
self::$_isXhtml = (false !== strpos($html, '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML'));
self::$_replacementHash = 'MINIFYHTML' . md5(time());
// remove SCRIPTs (and minify)
$html = preg_replace_callback('/\\s*(<script\\b[^>]*?>)([\\s\\S]*?)<\\/script>\\s*/i',
array('Minify_HTML', '_removeScriptCB'), $html);
// replace SCRIPTs (and minify) with placeholders
$html = preg_replace_callback(
'/\\s*(<script\\b[^>]*?>)([\\s\\S]*?)<\\/script>\\s*/i'
,array('Minify_HTML', '_removeScriptCB')
,$html);
// remove STYLEs (and minify)
$html = preg_replace_callback('/\\s*(<style\\b[^>]*?>)([\\s\\S]*?)<\\/style>\\s*/i',
array('Minify_HTML', '_removeStyleCB'), $html);
// replace STYLEs (and minify) with placeholders
$html = preg_replace_callback(
'/\\s*(<style\\b[^>]*?>)([\\s\\S]*?)<\\/style>\\s*/i'
,array('Minify_HTML', '_removeStyleCB')
,$html);
// remove HTML comments (but not IE conditional comments).
$html = preg_replace('/<!--[^\\[][\\s\\S]*?-->/', '', $html);
// replace PREs with token text
self::$_pres = array();
// replace PREs with placeholders
$html = preg_replace_callback('/\\s*(<pre\\b[^>]*?>[\\s\\S]*?<\\/pre>)\\s*/i'
,array('Minify_HTML', '_removePreCB')
, $html);
// replace TEXTAREAs with token text
self::$_tas = array();
$html = preg_replace_callback('/\\s*(<textarea\\b[^>]*?>[\\s\\S]*?<\\/textarea>)\\s*/i'
// replace TEXTAREAs with placeholders
$html = preg_replace_callback(
'/\\s*(<textarea\\b[^>]*?>[\\s\\S]*?<\\/textarea>)\\s*/i'
,array('Minify_HTML', '_removeTaCB')
, $html);
@@ -78,41 +82,27 @@ class Minify_HTML {
$html = preg_replace('/>(\\S[\\s\\S]*?)?\\s+</', ">$1 <", $html);
$html = preg_replace('/>\\s+</', "> <", $html);
// replace PREs
$i = count(self::$_pres);
while ($i > 0) {
$rep = array_pop(self::$_pres);
$html = str_replace(self::$_replacementHash . 'PRE' . $i, $rep, $html);
$i--;
}
// replace TEXTAREAs
$i = count(self::$_tas);
while ($i > 0) {
$rep = array_pop(self::$_tas);
$html = str_replace(self::$_replacementHash . 'TEXTAREA' . $i, $rep, $html);
$i--;
}
// replace SCRIPTs
$i = count(self::$_scripts);
while ($i > 0) {
$rep = array_pop(self::$_scripts);
$html = str_replace(self::$_replacementHash . 'SCRIPT' . $i, $rep, $html);
$i--;
}
// replace STYLEs
$i = count(self::$_styles);
while ($i > 0) {
$rep = array_pop(self::$_styles);
$html = str_replace(self::$_replacementHash . 'STYLE' . $i, $rep, $html);
$i--;
}
// fill placeholders
self::_fillPlaceholders($html, self::$_pres, 'PRE');
self::_fillPlaceholders($html, self::$_tas, 'TEXTAREA');
self::_fillPlaceholders($html, self::$_scripts, 'SCRIPT');
self::_fillPlaceholders($html, self::$_styles, 'STYLE');
self::$_cssMinifier = self::$_jsMinifier = null;
return $html;
}
protected static function _fillPlaceholders(&$html, &$placeholderArray, $id)
{
$i = count($placeholderArray);
while ($i) {
$html = str_replace(
self::$_replacementHash . $id . $i
,array_pop($placeholderArray)
,$html);
$i--;
}
}
protected static $_isXhtml = false;
protected static $_replacementHash = null;
@@ -196,4 +186,3 @@ class Minify_HTML {
return (self::$_isXhtml && preg_match('/(?:[<&]|\\-\\-|\\]\\]>)/', $str));
}
}