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class.csstidy_print.php
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class.csstidy_print.php
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<?php
/**
* CSSTidy - CSS Parser and Optimiser
*
* CSS Printing class
* This class prints CSS data generated by csstidy.
*
* Copyright 2005, 2006, 2007 Florian Schmitz
*
* This file is part of CSSTidy.
*
* CSSTidy is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* CSSTidy is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* @license http://opensource.org/licenses/lgpl-license.php GNU Lesser General Public License
* @package csstidy
* @author Florian Schmitz (floele at gmail dot com) 2005-2007
* @author Brett Zamir (brettz9 at yahoo dot com) 2007
* @author Cedric Morin (cedric at yterium dot com) 2010-2012
*/
/**
* CSS Printing class
*
* This class prints CSS data generated by csstidy.
*
* @package csstidy
* @author Florian Schmitz (floele at gmail dot com) 2005-2006
* @version 1.1.0
*/
class csstidy_print {
/**
* csstidy object
* @var object
*/
public $parser;
/**
* Saves the input CSS string
* @var string
* @access private
*/
public $input_css = '';
/**
* Saves the formatted CSS string
* @var string
* @access public
*/
public $output_css = '';
/**
* Saves the formatted CSS string (plain text)
* @var string
* @access public
*/
public $output_css_plain = '';
public $css;
public $template;
public $tokens;
public $charset;
public $import;
public $namespace;
/**
* Constructor
* @param array $css contains the class csstidy
* @access private
* @version 1.0
*/
public function __construct($css) {
$this->parser = $css;
$this->css = & $css->css;
$this->template = & $css->template;
$this->tokens = & $css->tokens;
$this->charset = & $css->charset;
$this->import = & $css->import;
$this->namespace = & $css->namespace;
}
/**
* Resets output_css and output_css_plain (new css code)
* @access private
* @version 1.0
*/
public function _reset() {
$this->output_css = '';
$this->output_css_plain = '';
}
/**
* Returns the CSS code as plain text
* @param string $default_media default @media to add to selectors without any @media
* @return string
* @access public
* @version 1.0
*/
public function plain($default_media='') {
$this->_print(true, $default_media);
return $this->output_css_plain;
}
/**
* Returns the formatted CSS code
* @param string $default_media default @media to add to selectors without any @media
* @return string
* @access public
* @version 1.0
*/
public function formatted($default_media='') {
$this->_print(false, $default_media);
return $this->output_css;
}
/**
* Returns the formatted CSS code to make a complete webpage
* @param string $doctype shorthand for the document type
* @param bool $externalcss indicates whether styles to be attached internally or as an external stylesheet
* @param string $title title to be added in the head of the document
* @param string $lang two-letter language code to be added to the output
* @return string
* @access public
* @version 1.4
*/
public function formatted_page($doctype='html5', $externalcss=true, $title='', $lang='en') {
switch ($doctype) {
case 'html5':
$doctype_output = '<!DOCTYPE html>';
break;
case 'xhtml1.0strict':
$doctype_output = '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">';
break;
case 'xhtml1.1':
default:
$doctype_output = '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">';
break;
}
$output = $cssparsed = '';
$this->output_css_plain = & $output;
$output .= $doctype_output . "\n" . '<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="' . $lang . '"';
$output .= ( $doctype === 'xhtml1.1') ? '>' : ' lang="' . $lang . '">';
$output .= "\n<head>\n <title>$title</title>";
if ($externalcss) {
$output .= "\n <style type=\"text/css\">\n";
$cssparsed = file_get_contents('cssparsed.css');
$output .= $cssparsed; // Adds an invisible BOM or something, but not in css_optimised.php
$output .= "\n</style>";
} else {
$output .= "\n" . ' <link rel="stylesheet" type="text/css" href="cssparsed.css" />';
}
$output .= "\n</head>\n<body><code id=\"copytext\">";
$output .= $this->formatted();
$output .= '</code>' . "\n" . '</body></html>';
return $this->output_css_plain;
}
/**
* Returns the formatted CSS Code and saves it into $this->output_css and $this->output_css_plain
* @param bool $plain plain text or not
* @param string $default_media default @media to add to selectors without any @media
* @access private
* @version 2.0
*/
public function _print($plain = false, $default_media='') {
if ($this->output_css && $this->output_css_plain) {
return;
}
$output = '';
if (!$this->parser->get_cfg('preserve_css')) {
$this->_convert_raw_css($default_media);
}
$template = & $this->template;
if ($plain) {
$template = array_map('strip_tags', $template);
}
if ($this->parser->get_cfg('timestamp')) {
array_unshift($this->tokens, array(COMMENT, ' CSSTidy ' . $this->parser->version . ': ' . date('r') . ' '));
}
if (!empty($this->charset)) {
$output .= $template[0] . '@charset ' . $template[5] . $this->charset . $template[6] . $template[13];
}
if (!empty($this->import)) {
for ($i = 0, $size = count($this->import); $i < $size; $i++) {
if (substr($this->import[$i], 0, 4) === 'url(' && substr($this->import[$i], -1, 1) === ')') {
$this->import[$i] = '"' . substr($this->import[$i], 4, -1) . '"';
$this->parser->log('Optimised @import : Removed "url("', 'Information');
}
else if (!preg_match('/^".+"$/',$this->import[$i])) {
// fixes a bug for @import ".." instead of the expected @import url("..")
// If it comes in due to @import ".." the "" will be missing and the output will become @import .. (which is an error)
$this->import[$i] = '"' . $this->import[$i] . '"';
}
$output .= $template[0] . '@import ' . $template[5] . $this->import[$i] . $template[6] . $template[13];
}
}
if (!empty($this->namespace)) {
if (($p=strpos($this->namespace,"url("))!==false && substr($this->namespace, -1, 1) === ')') {
$this->namespace = substr_replace($this->namespace,'"',$p,4);
$this->namespace = substr($this->namespace, 0, -1) . '"';
$this->parser->log('Optimised @namespace : Removed "url("', 'Information');
}
$output .= $template[0] . '@namespace ' . $template[5] . $this->namespace . $template[6] . $template[13];
}
$in_at_out = [];
$out = & $output;
$indent_level = 0;
foreach ($this->tokens as $key => $token) {
switch ($token[0]) {
case AT_START:
$out .= $template[0] . $this->_htmlsp($token[1], $plain) . $template[1];
$indent_level++;
if (!isset($in_at_out[$indent_level])) {
$in_at_out[$indent_level] = '';
}
$out = & $in_at_out[$indent_level];
break;
case SEL_START:
if ($this->parser->get_cfg('lowercase_s'))
$token[1] = strtolower($token[1]);
$out .= ( $token[1][0] !== '@') ? $template[2] . $this->_htmlsp($token[1], $plain) : $template[0] . $this->_htmlsp($token[1], $plain);
$out .= $template[3];
break;
case PROPERTY:
if ($this->parser->get_cfg('case_properties') === 2) {
$token[1] = strtoupper($token[1]);
} elseif ($this->parser->get_cfg('case_properties') === 1) {
$token[1] = strtolower($token[1]);
}
$out .= $template[4] . $this->_htmlsp($token[1], $plain) . ':' . $template[5];
break;
case VALUE:
$out .= $this->_htmlsp($token[1], $plain);
if ($this->_seeknocomment($key, 1) == SEL_END && $this->parser->get_cfg('remove_last_;')) {
$out .= str_replace(';', '', $template[6]);
} else {
$out .= $template[6];
}
break;
case SEL_END:
$out .= $template[7];
if ($this->_seeknocomment($key, 1) != AT_END)
$out .= $template[8];
break;
case AT_END:
if (strlen($template[10])) {
// indent the bloc we are closing
$out = str_replace("\n\n", "\r\n", $out); // don't fill empty lines
$out = str_replace("\n", "\n" . $template[10], $out);
$out = str_replace("\r\n", "\n\n", $out);
}
if ($indent_level > 1) {
$out = & $in_at_out[$indent_level-1];
}
else {
$out = & $output;
}
$out .= $template[10] . $in_at_out[$indent_level];
if ($this->_seeknocomment($key, 1) != AT_END) {
$out .= $template[9];
}
else {
$out .= rtrim($template[9]);
}
unset($in_at_out[$indent_level]);
$indent_level--;
break;
case IMPORTANT_COMMENT:
case COMMENT:
$out .= $template[11] . '/*' . $this->_htmlsp($token[1], $plain) . '*/' . $template[12];
break;
}
}
$output = trim($output);
if (!$plain) {
$this->output_css = $output;
$this->_print(true);
} else {
// If using spaces in the template, don't want these to appear in the plain output
$this->output_css_plain = str_replace(' ', '', $output);
}
}
/**
* Gets the next token type which is $move away from $key, excluding comments
* @param integer $key current position
* @param integer $move move this far
* @return mixed a token type
* @access private
* @version 1.0
*/
public function _seeknocomment($key, $move) {
$go = ($move > 0) ? 1 : -1;
for ($i = $key + 1; abs($key - $i) - 1 < abs($move); $i += $go) {
if (!isset($this->tokens[$i])) {
return;
}
if ($this->tokens[$i][0] == COMMENT) {
$move += 1;
continue;
}
return $this->tokens[$i][0];
}
}
/**
* Converts $this->css array to a raw array ($this->tokens)
* @param string $default_media default @media to add to selectors without any @media
* @access private
* @version 1.0
*/
public function _convert_raw_css($default_media='') {
$this->tokens = array();
$sort_selectors = $this->parser->get_cfg('sort_selectors');
$sort_properties = $this->parser->get_cfg('sort_properties');
// important comment section ?
if (isset($this->css['!'])) {
$this->parser->_add_token(IMPORTANT_COMMENT, rtrim($this->css['!']), true);
unset($this->css['!']);
}
foreach ($this->css as $medium => $val) {
if ($sort_selectors)
ksort($val);
if (intval($medium) < DEFAULT_AT) {
// un medium vide (contenant @font-face ou autre @) ne produit aucun conteneur
if (strlen(trim($medium))) {
$parts_to_open = explode('{', $medium);
foreach ($parts_to_open as $part) {
$this->parser->_add_token(AT_START, $part, true);
}
}
} elseif ($default_media) {
$this->parser->_add_token(AT_START, $default_media, true);
}
foreach ($val as $selector => $vali) {
if ($sort_properties)
ksort($vali);
$this->parser->_add_token(SEL_START, $selector, true);
$invalid = array(
'*' => array(), // IE7 hacks first
'_' => array(), // IE6 hacks
'/' => array(), // IE6 hacks
'-' => array() // IE6 hacks
);
foreach ($vali as $property => $valj) {
if (strncmp($property,"//",2)!==0) {
$matches = array();
if ($sort_properties && preg_match('/^(\*|_|\/|-)(?!(ms|moz|o\b|xv|atsc|wap|khtml|webkit|ah|hp|ro|rim|tc)-)/', $property, $matches)) {
$invalid[$matches[1]][$property] = $valj;
} else {
$this->parser->_add_token(PROPERTY, $property, true);
$this->parser->_add_token(VALUE, $valj, true);
}
}
}
foreach ($invalid as $prefix => $props) {
foreach ($props as $property => $valj) {
$this->parser->_add_token(PROPERTY, $property, true);
$this->parser->_add_token(VALUE, $valj, true);
}
}
$this->parser->_add_token(SEL_END, $selector, true);
}
if (intval($medium) < DEFAULT_AT) {
// un medium vide (contenant @font-face ou autre @) ne produit aucun conteneur
if (strlen(trim($medium))) {
$parts_to_close = explode('{', $medium);
foreach (array_reverse($parts_to_close) as $part) {
$this->parser->_add_token(AT_END, $part, true);
}
}
} elseif ($default_media) {
$this->parser->_add_token(AT_END, $default_media, true);
}
}
}
/**
* Same as htmlspecialchars, only that chars are not replaced if $plain !== true. This makes print_code() cleaner.
* @param string $string
* @param bool $plain
* @return string
* @see csstidy_print::_print()
* @access private
* @version 1.0
*/
public function _htmlsp($string, $plain) {
if (!$plain) {
return htmlspecialchars($string, ENT_QUOTES, 'utf-8');
}
return $string;
}
/**
* Get compression ratio
* @access public
* @return float
* @version 1.2
*/
public function get_ratio() {
if (!$this->output_css_plain) {
$this->formatted();
}
return round((strlen($this->input_css) - strlen($this->output_css_plain)) / strlen($this->input_css), 3) * 100;
}
/**
* Get difference between the old and new code in bytes and prints the code if necessary.
* @access public
* @return string
* @version 1.1
*/
public function get_diff() {
if (!$this->output_css_plain) {
$this->formatted();
}
$diff = strlen($this->output_css_plain) - strlen($this->input_css);
if ($diff > 0) {
return '+' . $diff;
} elseif ($diff == 0) {
return '+-' . $diff;
}
return $diff;
}
/**
* Get the size of either input or output CSS in KB
* @param string $loc default is "output"
* @access public
* @return integer
* @version 1.0
*/
public function size($loc = 'output') {
if ($loc === 'output' && !$this->output_css) {
$this->formatted();
}
if ($loc === 'input') {
return (strlen($this->input_css) / 1000);
} else {
return (strlen($this->output_css_plain) / 1000);
}
}
}