forked from GNUsocial/gnu-social
132 lines
4.2 KiB
PHP
132 lines
4.2 KiB
PHP
<?php
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/**
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* Class Minify_Lines
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* @package Minify
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*/
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/**
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* Add line numbers in C-style comments for easier debugging of combined content
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*
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* @package Minify
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* @author Stephen Clay <steve@mrclay.org>
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* @author Adam Pedersen (Issue 55 fix)
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*/
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class Minify_Lines {
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/**
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* Add line numbers in C-style comments
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*
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* This uses a very basic parser easily fooled by comment tokens inside
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* strings or regexes, but, otherwise, generally clean code will not be
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* mangled. URI rewriting can also be performed.
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*
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* @param string $content
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*
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* @param array $options available options:
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*
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* 'id': (optional) string to identify file. E.g. file name/path
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*
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* 'currentDir': (default null) if given, this is assumed to be the
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* directory of the current CSS file. Using this, minify will rewrite
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* all relative URIs in import/url declarations to correctly point to
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* the desired files, and prepend a comment with debugging information about
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* this process.
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*
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* @return string
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*/
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public static function minify($content, $options = array())
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{
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$id = (isset($options['id']) && $options['id'])
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? $options['id']
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: '';
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$content = str_replace("\r\n", "\n", $content);
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$lines = explode("\n", $content);
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$numLines = count($lines);
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// determine left padding
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$padTo = strlen($numLines);
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$inComment = false;
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$i = 0;
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$newLines = array();
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while (null !== ($line = array_shift($lines))) {
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if (('' !== $id) && (0 == $i % 50)) {
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array_push($newLines, '', "/* {$id} */", '');
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}
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++$i;
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$newLines[] = self::_addNote($line, $i, $inComment, $padTo);
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$inComment = self::_eolInComment($line, $inComment);
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}
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$content = implode("\n", $newLines) . "\n";
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// check for desired URI rewriting
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if (isset($options['currentDir'])) {
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require_once 'Minify/CSS/UriRewriter.php';
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Minify_CSS_UriRewriter::$debugText = '';
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$content = Minify_CSS_UriRewriter::rewrite(
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$content
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,$options['currentDir']
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,isset($options['docRoot']) ? $options['docRoot'] : $_SERVER['DOCUMENT_ROOT']
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,isset($options['symlinks']) ? $options['symlinks'] : array()
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);
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$content = "/* Minify_CSS_UriRewriter::\$debugText\n\n"
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. Minify_CSS_UriRewriter::$debugText . "*/\n"
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. $content;
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}
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return $content;
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}
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/**
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* Is the parser within a C-style comment at the end of this line?
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*
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* @param string $line current line of code
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*
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* @param bool $inComment was the parser in a comment at the
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* beginning of the line?
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*
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* @return bool
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*/
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private static function _eolInComment($line, $inComment)
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{
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while (strlen($line)) {
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$search = $inComment
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? '*/'
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: '/*';
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$pos = strpos($line, $search);
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if (false === $pos) {
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return $inComment;
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} else {
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if ($pos == 0
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|| ($inComment
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? substr($line, $pos, 3)
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: substr($line, $pos-1, 3)) != '*/*')
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{
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$inComment = ! $inComment;
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}
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$line = substr($line, $pos + 2);
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}
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}
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return $inComment;
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}
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/**
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* Prepend a comment (or note) to the given line
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*
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* @param string $line current line of code
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*
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* @param string $note content of note/comment
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*
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* @param bool $inComment was the parser in a comment at the
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* beginning of the line?
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*
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* @param int $padTo minimum width of comment
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*
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* @return string
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*/
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private static function _addNote($line, $note, $inComment, $padTo)
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{
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return $inComment
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? '/* ' . str_pad($note, $padTo, ' ', STR_PAD_RIGHT) . ' *| ' . $line
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: '/* ' . str_pad($note, $padTo, ' ', STR_PAD_RIGHT) . ' */ ' . $line;
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}
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}
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