/**
* Add line numbers in C-style comments
*
* This uses a very basic parser easily fooled by comment tokens inside
* strings or regexes, but, otherwise, generally clean code will not be
* mangled. URI rewriting can also be performed.
*
* @param string $content
*
* @param array $options available options:
*
* 'id': (optional) string to identify file. E.g. file name/path
*
* 'currentDir': (default null) if given, this is assumed to be the
* directory of the current CSS file. Using this, minify will rewrite
* all relative URIs in import/url declarations to correctly point to
* the desired files, and prepend a comment with debugging information about
* this process.
*
* @return string
*/
public static function minify($content, $options = array())
{
$id = isset($options['id']) && $options['id'] ? $options['id'] : '';
$content = str_replace("\r\n", "\n", $content);
// Hackily rewrite strings with XPath expressions that are
// likely to throw off our dumb parser (for Prototype 1.6.1).
$content = str_replace('"/*"', '"/"+"*"', $content);
$content = preg_replace('@([\'"])(\\.?//?)\\*@', '$1$2$1+$1*', $content);
$lines = explode("\n", $content);
$num_lines = count($lines);
// determine left padding
$pad_to = strlen((string) $num_lines);
// e.g. 103 lines = 3 digits
$in_comment = FALSE;
$i = 0;
$new_lines = array();
while (NULL !== ($line = array_shift($lines))) {
if ('' !== $id and 0 == $i % 50) {
array_push($new_lines, '', "/* {$id} */", '');
}
++$i;
$new_lines[] = self::_add_note($line, $i, $in_comment, $pad_to);
$in_comment = self::_eol_in_comment($line, $in_comment);
}
$content = implode("\n", $new_lines) . "\n";
// check for desired URI rewriting
if (isset($options['current_dir'])) {
Minify_CSS_Uri_Rewriter::$debug_text = '';
$content = Minify_CSS_Uri_Rewriter::rewrite($content, $options['current_dir'], isset($options['docRoot']) ? $options['docRoot'] : $_SERVER['DOCUMENT_ROOT'], isset($options['symlinks']) ? $options['symlinks'] : array());
$content = "/* Minify_CSS_Uri_Rewriter::\$debug_text\n\n" . Minify_CSS_Uri_Rewriter::$debug_text . "*/\n" . $content;
}
return $content;
}
public function min()
{
$this->_options = array_merge(array('remove_charsets' => true, 'preserve_comments' => true, 'current_dir' => null, 'doc_root' => $_SERVER['DOCUMENT_ROOT'], 'prepend_relative_path' => null, 'symlinks' => array()), $this->_options);
if ($this->_options['remove_charsets']) {
$this->_css = preg_replace('/@charset[^;]+;\\s*/', '', $this->_css);
}
if (!$this->_options['preserve_comments']) {
$this->_css = Minify_CSS_Compressor::process($this->_css, $this->_options);
} else {
$this->_css = Minify_CSS_Comment_Preserver::process($this->_css, array('Minify_CSS_Compressor', 'process'), array($this->_options));
}
if (!$this->_options['current_dir'] && !$this->_options['prepend_relative_path']) {
return $this->_css;
}
if ($this->_options['current_dir']) {
return Minify_CSS_Uri_Rewriter::rewrite($this->_css, $this->_options['current_dir'], $this->_options['doc_root'], $this->_options['symlinks']);
} else {
return Minify_CSS_Uri_Rewriter::prepend($this->_css, $this->_options['prepend_relative_path']);
}
}
