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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 * Compress HTML
* *
* This is a heavy regex-based removal of whitespace, unnecessary * This is a heavy regex-based removal of whitespace, unnecessary comments and
* comments and tokens. * 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 * A test suite is available.
* and SCRIPT blocks compressed by callback functions. A test suite is available.
* *
* @package Minify * @package Minify
* @author Stephen Clay <steve@mrclay.org> * @author Stephen Clay <steve@mrclay.org>
@@ -21,10 +21,11 @@ class Minify_HTML {
/** /**
* "Minify" an HTML page * "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'])) { if (isset($options['cssMinifier'])) {
self::$_cssMinifier = $options['cssMinifier']; self::$_cssMinifier = $options['cssMinifier'];
@@ -33,32 +34,35 @@ class Minify_HTML {
self::$_jsMinifier = $options['jsMinifier']; self::$_jsMinifier = $options['jsMinifier'];
} }
$html = trim($string); $html = trim($html);
self::$_isXhtml = (false !== strpos($html, '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML')); self::$_isXhtml = (false !== strpos($html, '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML'));
self::$_replacementHash = 'MINIFYHTML' . md5(time()); self::$_replacementHash = 'MINIFYHTML' . md5(time());
// remove SCRIPTs (and minify) // replace SCRIPTs (and minify) with placeholders
$html = preg_replace_callback('/\\s*(<script\\b[^>]*?>)([\\s\\S]*?)<\\/script>\\s*/i', $html = preg_replace_callback(
array('Minify_HTML', '_removeScriptCB'), $html); '/\\s*(<script\\b[^>]*?>)([\\s\\S]*?)<\\/script>\\s*/i'
,array('Minify_HTML', '_removeScriptCB')
,$html);
// remove STYLEs (and minify) // replace STYLEs (and minify) with placeholders
$html = preg_replace_callback('/\\s*(<style\\b[^>]*?>)([\\s\\S]*?)<\\/style>\\s*/i', $html = preg_replace_callback(
array('Minify_HTML', '_removeStyleCB'), $html); '/\\s*(<style\\b[^>]*?>)([\\s\\S]*?)<\\/style>\\s*/i'
,array('Minify_HTML', '_removeStyleCB')
,$html);
// remove HTML comments (but not IE conditional comments). // remove HTML comments (but not IE conditional comments).
$html = preg_replace('/<!--[^\\[][\\s\\S]*?-->/', '', $html); $html = preg_replace('/<!--[^\\[][\\s\\S]*?-->/', '', $html);
// replace PREs with token text // replace PREs with placeholders
self::$_pres = array();
$html = preg_replace_callback('/\\s*(<pre\\b[^>]*?>[\\s\\S]*?<\\/pre>)\\s*/i' $html = preg_replace_callback('/\\s*(<pre\\b[^>]*?>[\\s\\S]*?<\\/pre>)\\s*/i'
,array('Minify_HTML', '_removePreCB') ,array('Minify_HTML', '_removePreCB')
, $html); , $html);
// replace TEXTAREAs with token text // replace TEXTAREAs with placeholders
self::$_tas = array(); $html = preg_replace_callback(
$html = preg_replace_callback('/\\s*(<textarea\\b[^>]*?>[\\s\\S]*?<\\/textarea>)\\s*/i' '/\\s*(<textarea\\b[^>]*?>[\\s\\S]*?<\\/textarea>)\\s*/i'
,array('Minify_HTML', '_removeTaCB') ,array('Minify_HTML', '_removeTaCB')
, $html); , $html);
@@ -78,41 +82,27 @@ class Minify_HTML {
$html = preg_replace('/>(\\S[\\s\\S]*?)?\\s+</', ">$1 <", $html); $html = preg_replace('/>(\\S[\\s\\S]*?)?\\s+</', ">$1 <", $html);
$html = preg_replace('/>\\s+</', "> <", $html); $html = preg_replace('/>\\s+</', "> <", $html);
// replace PREs // fill placeholders
$i = count(self::$_pres); self::_fillPlaceholders($html, self::$_pres, 'PRE');
while ($i > 0) { self::_fillPlaceholders($html, self::$_tas, 'TEXTAREA');
$rep = array_pop(self::$_pres); self::_fillPlaceholders($html, self::$_scripts, 'SCRIPT');
$html = str_replace(self::$_replacementHash . 'PRE' . $i, $rep, $html); self::_fillPlaceholders($html, self::$_styles, 'STYLE');
$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);
$i--;
}
self::$_cssMinifier = self::$_jsMinifier = null; self::$_cssMinifier = self::$_jsMinifier = null;
return $html; 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 $_isXhtml = false;
protected static $_replacementHash = null; protected static $_replacementHash = null;
@@ -196,4 +186,3 @@ class Minify_HTML {
return (self::$_isXhtml && preg_match('/(?:[<&]|\\-\\-|\\]\\]>)/', $str)); return (self::$_isXhtml && preg_match('/(?:[<&]|\\-\\-|\\]\\]>)/', $str));
} }
} }