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<?php
/**
* CSSTidy - CSS Parser and Optimiser
*
* CSS Parser class
*
* 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 Nikolay Matsievsky (speed at webo dot name) 2009-2010
* @author Cedric Morin (cedric at yterium dot com) 2010-2012
* @author Christopher Finke (cfinke at gmail.com) 2012
* @author Mark Scherer (remove $GLOBALS once and for all + PHP5.4 comp) 2012
*/
/**
* Defines constants
* @todo //TODO: make them class constants of csstidy
*/
define('AT_START', 1);
define('AT_END', 2);
define('SEL_START', 3);
define('SEL_END', 4);
define('PROPERTY', 5);
define('VALUE', 6);
define('COMMENT', 7);
define('IMPORTANT_COMMENT',8);
define('DEFAULT_AT', 41);
/**
* Contains a class for printing CSS code
*
* @version 1.1.0
*/
require(__DIR__ . DIRECTORY_SEPARATOR . 'class.csstidy_print.php');
/**
* Contains a class for optimising CSS code
*
* @version 1.0
*/
require(__DIR__ . DIRECTORY_SEPARATOR . 'class.csstidy_optimise.php');
/**
* CSS Parser class
*
* This class represents a CSS parser which reads CSS code and saves it in an array.
* In opposite to most other CSS parsers, it does not use regular expressions and
* thus has full CSS2 support and a higher reliability.
* Additional to that it applies some optimisations and fixes to the CSS code.
* An online version should be available here: http://cdburnerxp.se/cssparse/css_optimiser.php
* @package csstidy
* @author Florian Schmitz (floele at gmail dot com) 2005-2006
* @version 2.1.0
*/
class csstidy {
/**
* Saves the parsed CSS. This array is empty if preserve_css is on.
* @var array
* @access public
*/
public $css = array();
/**
* Saves the parsed CSS (raw)
* @var array
* @access private
*/
public $tokens = array();
/**
* Printer class
* @see csstidy_print
* @var object
* @access public
*/
public $print;
/**
* Optimiser class
* @see csstidy_optimise
* @var object
* @access private
*/
public $optimise;
/**
* Saves the CSS charset (@charset)
* @var string
* @access private
*/
public $charset = '';
/**
* Saves all @import URLs
* @var array
* @access private
*/
public $import = array();
/**
* Saves the namespace
* @var string
* @access private
*/
public $namespace = '';
/**
* Contains the version of csstidy
* @var string
* @access private
*/
public $version = '2.0.3';
/**
* Stores the settings
* @var array
* @access private
*/
public $settings = array();
/**
* Saves the parser-status.
*
* Possible values:
* - is = in selector
* - ip = in property
* - iv = in value
* - instr = in string (started at " or ' or ( )
* - ic = in comment (ignore everything)
* - at = in @-block
*
* @var string
* @access private
*/
public $status = 'is';
/**
* Saves the current at rule (@media)
* @var string
* @access private
*/
public $at = '';
/**
* Saves the at rule for next selector (during @font-face or other @)
* @var string
* @access private
*/
public $next_selector_at = '';
/**
* Saves the current selector
* @var string
* @access private
*/
public $selector = '';
/**
* Saves the current property
* @var string
* @access private
*/
public $property = '';
/**
* Saves the position of , in selectors
* @var array
* @access private
*/
public $sel_separate = array();
/**
* Saves the current value
* @var string
* @access private
*/
public $value = '';
/**
* Saves the current sub-value
*
* Example for a subvalue:
* background:url(foo.png) red no-repeat;
* "url(foo.png)", "red", and "no-repeat" are subvalues,
* seperated by whitespace
* @var string
* @access private
*/
public $sub_value = '';
/**
* Array which saves all subvalues for a property.
* @var array
* @see sub_value
* @access private
*/
public $sub_value_arr = array();
/**
* Saves the stack of characters that opened the current strings
* @var array
* @access private
*/
public $str_char = array();
public $cur_string = array();
/**
* Status from which the parser switched to ic or instr
* @var array
* @access private
*/
public $from = array();
/**
/**
* =true if in invalid at-rule
* @var bool
* @access private
*/
public $invalid_at = false;
/**
* =true if something has been added to the current selector
* @var bool
* @access private
*/
public $added = false;
/**
* Array which saves the message log
* @var array
* @access private
*/
public $log = array();
/**
* Saves the line number
* @var integer
* @access private
*/
public $line = 1;
/**
* Marks if we need to leave quotes for a string
* @var array
* @access private
*/
public $quoted_string = array();
/**
* List of tokens
* @var string
*/
public $tokens_list = "";
/**
* Various CSS Data for CSSTidy
* @var array
*/
public $data = array();
public $template;
/**
* Loads standard template and sets default settings
* @access private
* @version 1.3
*/
public function __construct() {
$data = array();
include(__DIR__ . DIRECTORY_SEPARATOR . 'data.inc.php');
$this->data = $data;
$this->settings['remove_bslash'] = true;
$this->settings['compress_colors'] = true;
$this->settings['compress_font-weight'] = true;
$this->settings['lowercase_s'] = false;
/*
1 common shorthands optimization
2 + font property optimization
3 + background property optimization
*/
$this->settings['optimise_shorthands'] = 1;
$this->settings['remove_last_;'] = true;
$this->settings['space_before_important'] = false;
/* rewrite all properties with low case, better for later gzip OK, safe*/
$this->settings['case_properties'] = 1;
/* sort properties in alpabetic order, better for later gzip
* but can cause trouble in case of overiding same propertie or using hack
*/
$this->settings['sort_properties'] = false;
/*
1, 3, 5, etc -- enable sorting selectors inside @media: a{}b{}c{}
2, 5, 8, etc -- enable sorting selectors inside one CSS declaration: a,b,c{}
preserve order by default cause it can break functionnality
*/
$this->settings['sort_selectors'] = 0;
/* is dangeroues to be used: CSS is broken sometimes */
$this->settings['merge_selectors'] = 0;
/* preserve or not browser hacks */
/* Useful to produce a rtl css from a ltr one (or the opposite) */
$this->settings['reverse_left_and_right'] = 0;
$this->settings['discard_invalid_selectors'] = false;
$this->settings['discard_invalid_properties'] = false;
$this->settings['css_level'] = 'CSS3.0';
$this->settings['preserve_css'] = false;
$this->settings['timestamp'] = false;
$this->settings['template'] = ''; // say that propertie exist
$this->set_cfg('template','default'); // call load_template
$this->optimise = new csstidy_optimise($this);
$this->tokens_list = & $this->data['csstidy']['tokens'];
}
/**
* Get the value of a setting.
* @param string $setting
* @access public
* @return mixed
* @version 1.0
*/
public function get_cfg($setting) {
if (isset($this->settings[$setting])) {
return $this->settings[$setting];
}
return false;
}
/**
* Load a template
* @param string $template used by set_cfg to load a template via a configuration setting
* @access private
* @version 1.4
*/
public function _load_template($template) {
switch ($template) {
case 'default':
$this->load_template('default');
break;
case 'highest':
$this->load_template('highest_compression');
break;
case 'high':
$this->load_template('high_compression');
break;
case 'low':
$this->load_template('low_compression');
break;
default:
$this->load_template($template);
break;
}
}
/**
* Set the value of a setting.
* @param string $setting
* @param mixed $value
* @access public
* @return bool
* @version 1.0
*/
public function set_cfg($setting, $value=null) {
if (is_array($setting) && $value === null) {
foreach ($setting as $setprop => $setval) {
$this->settings[$setprop] = $setval;
}
if (array_key_exists('template', $setting)) {
$this->_load_template($this->settings['template']);
}
return true;
} elseif (isset($this->settings[$setting]) && $value !== '') {
$this->settings[$setting] = $value;
if ($setting === 'template') {
$this->_load_template($this->settings['template']);
}
return true;
}
return false;
}
/**
* Adds a token to $this->tokens
* @param mixed $type
* @param string $data
* @param bool $do add a token even if preserve_css is off
* @access private
* @version 1.0
*/
public function _add_token($type, $data, $do = false) {
if ($this->get_cfg('preserve_css') || $do) {
// nested @... : if opening a new part we just closed, remove the previous closing instead of adding opening
if ($type === AT_START
and count($this->tokens)
and $last = end($this->tokens)
and $last[0] === AT_END
and $last[1] === trim($data)) {
array_pop($this->tokens);
}
else {
$this->tokens[] = array($type, ($type == COMMENT or $type == IMPORTANT_COMMENT) ? $data : trim($data));
}
}
}
/**
* Add a message to the message log
* @param string $message
* @param string $type
* @param integer $line
* @access private
* @version 1.0
*/
public function log($message, $type, $line = -1) {
if ($line === -1) {
$line = $this->line;
}
$line = intval($line);
$add = array('m' => $message, 't' => $type);
if (!isset($this->log[$line]) || !in_array($add, $this->log[$line])) {
$this->log[$line][] = $add;
}
}
/**
* Parse unicode notations and find a replacement character
* @param string $string
* @param integer $i
* @access private
* @return string
* @version 1.2
*/
public function _unicode(&$string, &$i) {
++$i;
$add = '';
$replaced = false;
while ($i < strlen($string) && (ctype_xdigit($string[$i]) || ctype_space($string[$i])) && strlen($add) < 6) {
$add .= $string[$i];
if (ctype_space($string[$i])) {
break;
}
$i++;
}
if (hexdec($add) > 47 && hexdec($add) < 58 || hexdec($add) > 64 && hexdec($add) < 91 || hexdec($add) > 96 && hexdec($add) < 123) {
$this->log('Replaced unicode notation: Changed \\' . $add . ' to ' . chr(hexdec($add)), 'Information');
$add = chr(hexdec($add));
$replaced = true;
} else {
$add = trim('\\' . $add);
}
if (@ctype_xdigit($string[$i + 1]) && ctype_space($string[$i])
&& !$replaced || !ctype_space($string[$i])) {
$i--;
}
if ($add !== '\\' || !$this->get_cfg('remove_bslash') || strpos($this->tokens_list, $string[$i + 1]) !== false) {
return $add;
}
if ($add === '\\') {
$this->log('Removed unnecessary backslash', 'Information');
}
return '';
}
/**
* Write formatted output to a file
* @param string $filename
* @param string $doctype when printing formatted, is a shorthand for the document type
* @param bool $externalcss when printing formatted, indicates whether styles to be attached internally or as an external stylesheet
* @param string $title when printing formatted, is the title to be added in the head of the document
* @param string $lang when printing formatted, gives a two-letter language code to be added to the output
* @access public
* @version 1.4
*/
public function write_page($filename, $doctype='xhtml1.1', $externalcss=true, $title='', $lang='en') {
$this->write($filename, true);
}
/**
* Write plain output to a file
* @param string $filename
* @param bool $formatted whether to print formatted or not
* @param string $doctype when printing formatted, is a shorthand for the document type
* @param bool $externalcss when printing formatted, indicates whether styles to be attached internally or as an external stylesheet
* @param string $title when printing formatted, is the title to be added in the head of the document
* @param string $lang when printing formatted, gives a two-letter language code to be added to the output
* @param bool $pre_code whether to add pre and code tags around the code (for light HTML formatted templates)
* @access public
* @version 1.4
*/
public function write($filename, $formatted=false, $doctype='xhtml1.1', $externalcss=true, $title='', $lang='en', $pre_code=true) {
$filename .= ( $formatted) ? '.xhtml' : '.css';
if (!is_dir('temp')) {
$madedir = mkdir('temp');
if (!$madedir) {
print 'Could not make directory "temp" in ' . dirname(__FILE__);
exit;
}
}
$handle = fopen('temp/' . $filename, 'w');
if ($handle) {
if (!$formatted) {
fwrite($handle, $this->print->plain());
} else {
fwrite($handle, $this->print->formatted_page($doctype, $externalcss, $title, $lang, $pre_code));
}
}
fclose($handle);
}
/**
* Loads a new template
* @param string $content either filename (if $from_file == true), content of a template file, "high_compression", "highest_compression", "low_compression", or "default"
* @param bool $from_file uses $content as filename if true
* @access public
* @version 1.1
* @see http://csstidy.sourceforge.net/templates.php
*/
public function load_template($content, $from_file=true) {
$predefined_templates = & $this->data['csstidy']['predefined_templates'];
if ($content === 'high_compression' || $content === 'default' || $content === 'highest_compression' || $content === 'low_compression') {
$this->template = $predefined_templates[$content];
return;
}
if ($from_file) {
$content = strip_tags(file_get_contents($content), '<span>');
}
$content = str_replace("\r\n", "\n", $content); // Unify newlines (because the output also only uses \n)
$template = explode('|', $content);
for ($i = 0; $i < count($template); $i++) {
$this->template[$i] = $template[$i];
}
}
/**
* Starts parsing from URL
* @param string $url
* @access public
* @version 1.0
*/
public function parse_from_url($url) {
return $this->parse(@file_get_contents($url));
}
/**
* Checks if there is a token at the current position
* @param string $string
* @param integer $i
* @access public
* @version 1.11
*/
public function is_token(&$string, $i) {
return (strpos($this->tokens_list, $string[$i]) !== false && !$this->escaped($string, $i));
}
/**
* Parses CSS in $string. The code is saved as array in $this->css
* @param string $string the CSS code
* @access public
* @return bool
* @version 1.1
*/
public function parse($string) {
// Temporarily set locale to en_US in order to handle floats properly
$old = @setlocale(LC_ALL, 0);
@setlocale(LC_ALL, 'C');
// PHP bug? Settings need to be refreshed in PHP4
$this->print = new csstidy_print($this);
$this->optimise = new csstidy_optimise($this);
$all_properties = & $this->data['csstidy']['all_properties'];
$at_rules = & $this->data['csstidy']['at_rules'];
$quoted_string_properties = & $this->data['csstidy']['quoted_string_properties'];
$this->css = array();
$this->print->input_css = $string;
$string = str_replace("\r\n", "\n", $string) . ' ';
$cur_comment = '';
$cur_at = '';
for ($i = 0, $size = strlen($string); $i < $size; $i++) {
if ($string[$i] === "\n" || $string[$i] === "\r") {
++$this->line;
}
switch ($this->status) {
/* Case in at-block */
case 'at':
if ($this->is_token($string, $i)) {
if ($string[$i] === '/' && @$string[$i + 1] === '*') {
$this->status = 'ic';
++$i;
$this->from[] = 'at';
} elseif ($string[$i] === '{') {
$this->status = 'is';
$this->at = $this->css_new_media_section($this->at, $cur_at);
$this->_add_token(AT_START, $this->at);
} elseif ($string[$i] === ',') {
$cur_at = trim($cur_at) . ',';
} elseif ($string[$i] === '\\') {
$cur_at .= $this->_unicode($string, $i);
}
// fix for complicated media, i.e @media screen and (-webkit-min-device-pixel-ratio:1.5)
elseif (in_array($string[$i], array('(', ')', ':', '.', '/'))) {
$cur_at .= $string[$i];
}
} else {
$lastpos = strlen($cur_at) - 1;
if (!( (ctype_space($cur_at[$lastpos]) || $this->is_token($cur_at, $lastpos) && $cur_at[$lastpos] === ',') && ctype_space($string[$i]))) {
$cur_at .= $string[$i];
}
}
break;
/* Case in-selector */
case 'is':
if ($this->is_token($string, $i)) {
if ($string[$i] === '/' && @$string[$i + 1] === '*' && trim($this->selector) == '') {
$this->status = 'ic';
++$i;
$this->from[] = 'is';
} elseif ($string[$i] === '@' && trim($this->selector) == '') {
// Check for at-rule
$this->invalid_at = true;
foreach ($at_rules as $name => $type) {
if (!strcasecmp(substr($string, $i + 1, strlen($name)), $name)) {
($type === 'at') ? $cur_at = '@' . $name : $this->selector = '@' . $name;
if ($type === 'atis') {
$this->next_selector_at = ($this->next_selector_at?$this->next_selector_at:($this->at?$this->at:DEFAULT_AT));
$this->at = $this->css_new_media_section($this->at, ' ', true);
$type = 'is';
}
$this->status = $type;
$i += strlen($name);
$this->invalid_at = false;
break;
}
}
if ($this->invalid_at) {
$this->selector = '@';
$invalid_at_name = '';
for ($j = $i + 1; $j < $size; ++$j) {
if (!ctype_alpha($string[$j])) {
break;
}
$invalid_at_name .= $string[$j];
}
$this->log('Invalid @-rule: ' . $invalid_at_name . ' (removed)', 'Warning');
}
} elseif (($string[$i] === '"' || $string[$i] === "'")) {
$this->cur_string[] = $string[$i];
$this->status = 'instr';
$this->str_char[] = $string[$i];
$this->from[] = 'is';
/* fixing CSS3 attribute selectors, i.e. a[href$=".mp3" */
$this->quoted_string[] = ($string[$i - 1] === '=' );
} elseif ($this->invalid_at && $string[$i] === ';') {
$this->invalid_at = false;
$this->status = 'is';
if ($this->next_selector_at) {
$this->at = $this->css_close_media_section($this->at);
$this->at = $this->css_new_media_section($this->at, $this->next_selector_at);
$this->next_selector_at = '';
}
} elseif ($string[$i] === '{') {
$this->status = 'ip';
if ($this->at == '') {
$this->at = $this->css_new_media_section($this->at, DEFAULT_AT);
}
$this->selector = $this->css_new_selector($this->at,$this->selector);
$this->_add_token(SEL_START, $this->selector);
$this->added = false;
} elseif ($string[$i] === '}') {
$this->_add_token(AT_END, $this->at);
$this->at = $this->css_close_media_section($this->at);
$this->selector = '';
$this->sel_separate = array();
} elseif ($string[$i] === ',') {
$this->selector = trim($this->selector) . ',';
$this->sel_separate[] = strlen($this->selector);
} elseif ($string[$i] === '\\') {
$this->selector .= $this->_unicode($string, $i);
} elseif ($string[$i] === '*' && @in_array($string[$i + 1], array('.', '#', '[', ':')) && ($i==0 OR $string[$i - 1]!=='/')) {
// remove unnecessary universal selector, FS#147, but not comment in selector
} else {
$this->selector .= $string[$i];
}
} else {
$lastpos = strlen($this->selector) - 1;
if ($lastpos == -1 || !( (ctype_space($this->selector[$lastpos]) || $this->is_token($this->selector, $lastpos) && $this->selector[$lastpos] === ',') && ctype_space($string[$i]))) {
$this->selector .= $string[$i];
}
}
break;
/* Case in-property */
case 'ip':
if ($this->is_token($string, $i)) {
if (($string[$i] === ':' || $string[$i] === '=') && $this->property != '') {
$this->status = 'iv';
if (!$this->get_cfg('discard_invalid_properties') || $this->property_is_valid($this->property)) {
$this->property = $this->css_new_property($this->at,$this->selector,$this->property);
$this->_add_token(PROPERTY, $this->property);
}
} elseif ($string[$i] === '/' && @$string[$i + 1] === '*' && $this->property == '') {
$this->status = 'ic';
++$i;
$this->from[] = 'ip';
} elseif ($string[$i] === '}') {
$this->explode_selectors();
$this->status = 'is';
$this->invalid_at = false;
$this->_add_token(SEL_END, $this->selector);
$this->selector = '';
$this->property = '';
if ($this->next_selector_at) {
$this->at = $this->css_close_media_section($this->at);
$this->at = $this->css_new_media_section($this->at, $this->next_selector_at);
$this->next_selector_at = '';
}
} elseif ($string[$i] === ';') {
$this->property = '';
} elseif ($string[$i] === '\\') {
$this->property .= $this->_unicode($string, $i);
}
// else this is dumb IE a hack, keep it
// including //
elseif (($this->property === '' && !ctype_space($string[$i]))
|| ($this->property === '/' || $string[$i] === '/')) {
$this->property .= $string[$i];
}
} elseif (!ctype_space($string[$i])) {
$this->property .= $string[$i];
}
break;
/* Case in-value */
case 'iv':
$pn = (($string[$i] === "\n" || $string[$i] === "\r") && $this->property_is_next($string, $i + 1) || $i == strlen($string) - 1);
if ($this->is_token($string, $i) || $pn) {
if ($string[$i] === '/' && @$string[$i + 1] === '*') {
$this->status = 'ic';
++$i;
$this->from[] = 'iv';
} elseif (($string[$i] === '"' || $string[$i] === "'" || $string[$i] === '(')) {
$this->cur_string[] = $string[$i];
$this->str_char[] = ($string[$i] === '(') ? ')' : $string[$i];
$this->status = 'instr';
$this->from[] = 'iv';
$this->quoted_string[] = in_array(strtolower($this->property), $quoted_string_properties);
} elseif ($string[$i] === ',') {
$this->sub_value = trim($this->sub_value) . ',';
} elseif ($string[$i] === '\\') {
$this->sub_value .= $this->_unicode($string, $i);
} elseif ($string[$i] === ';' || $pn) {
if ($this->selector[0] === '@' && isset($at_rules[substr($this->selector, 1)]) && $at_rules[substr($this->selector, 1)] === 'iv') {
/* Add quotes to charset, import, namespace */
$this->sub_value_arr[] = trim($this->sub_value);
$this->status = 'is';
switch ($this->selector) {
case '@charset': $this->charset = '"'.$this->sub_value_arr[0].'"';
break;
case '@namespace': $this->namespace = implode(' ', $this->sub_value_arr);
break;
case '@import': $this->import[] = implode(' ', $this->sub_value_arr);
break;
}
$this->sub_value_arr = array();
$this->sub_value = '';
$this->selector = '';
$this->sel_separate = array();
} else {
$this->status = 'ip';
}
} elseif ($string[$i] !== '}') {
$this->sub_value .= $string[$i];
}
if (($string[$i] === '}' || $string[$i] === ';' || $pn) && !empty($this->selector)) {
if ($this->at == '') {
$this->at = $this->css_new_media_section($this->at,DEFAULT_AT);
}
// case settings
if ($this->get_cfg('lowercase_s')) {
$this->selector = strtolower($this->selector);
}
$this->property = strtolower($this->property);
$this->optimise->subvalue();
if ($this->sub_value != '') {
$this->sub_value_arr[] = $this->sub_value;
$this->sub_value = '';
}
$this->value = '';
while (count($this->sub_value_arr)) {
$sub = array_shift($this->sub_value_arr);
if (strstr($this->selector, 'font-face')) {
$sub = $this->quote_font_format($sub);
}
if ($sub != '')
$this->value .= ((!strlen($this->value) || substr($this->value,-1,1) === ',')?'':' ').$sub;
}
$this->optimise->value();
$valid = $this->property_is_valid($this->property);
if ((!$this->invalid_at || $this->get_cfg('preserve_css')) && (!$this->get_cfg('discard_invalid_properties') || $valid)) {
$this->css_add_property($this->at, $this->selector, $this->property, $this->value);
$this->_add_token(VALUE, $this->value);
$this->optimise->shorthands();
}
if (!$valid) {
if ($this->get_cfg('discard_invalid_properties')) {
$this->log('Removed invalid property: ' . $this->property, 'Warning');
} else {
$this->log('Invalid property in ' . strtoupper($this->get_cfg('css_level')) . ': ' . $this->property, 'Warning');
}
}
$this->property = '';
$this->sub_value_arr = array();
$this->value = '';
}
if ($string[$i] === '}') {
$this->explode_selectors();
$this->_add_token(SEL_END, $this->selector);
$this->status = 'is';
$this->invalid_at = false;
$this->selector = '';
if ($this->next_selector_at) {
$this->at = $this->css_close_media_section($this->at);
$this->at = $this->css_new_media_section($this->at, $this->next_selector_at);
$this->next_selector_at = '';
}
}
} elseif (!$pn) {
$this->sub_value .= $string[$i];
if (ctype_space($string[$i])) {
$this->optimise->subvalue();
if ($this->sub_value != '') {
$this->sub_value_arr[] = $this->sub_value;
$this->sub_value = '';
}
}
}
break;
/* Case in string */
case 'instr':
$_str_char = $this->str_char[count($this->str_char)-1];
$_cur_string = $this->cur_string[count($this->cur_string)-1];
$_quoted_string = $this->quoted_string[count($this->quoted_string)-1];
$temp_add = $string[$i];
// Add another string to the stack. Strings can't be nested inside of quotes, only parentheses, but
// parentheticals can be nested more than once.
if ($_str_char === ")" && ($string[$i] === "(" || $string[$i] === '"' || $string[$i] === '\'') && !$this->escaped($string, $i)) {
$this->cur_string[] = $string[$i];
$this->str_char[] = $string[$i] === '(' ? ')' : $string[$i];
$this->from[] = 'instr';
$this->quoted_string[] = ($_str_char === ')' && $string[$i] !== '(' && trim($_cur_string)==='(')?$_quoted_string:!($string[$i] === '(');
continue 2;
}
if ($_str_char !== ")" && ($string[$i] === "\n" || $string[$i] === "\r") && !($string[$i - 1] === '\\' && !$this->escaped($string, $i - 1))) {
$temp_add = "\\A";
$this->log('Fixed incorrect newline in string', 'Warning');
}
$_cur_string .= $temp_add;
if ($string[$i] === $_str_char && !$this->escaped($string, $i)) {
$this->status = array_pop($this->from);
if (!preg_match('|[' . implode('', $this->data['csstidy']['whitespace']) . ']|uis', $_cur_string) && $this->property !== 'content') {
if (!$_quoted_string) {
if ($_str_char !== ')') {
// Convert properties like
// font-family: 'Arial';
// to
// font-family: Arial;
// or
// url("abc")
// to
// url(abc)
$_cur_string = substr($_cur_string, 1, -1);
}
} else {
$_quoted_string = false;
}
}
array_pop($this->cur_string);
array_pop($this->quoted_string);
array_pop($this->str_char);
if ($_str_char === ')') {
$_cur_string = '(' . trim(substr($_cur_string, 1, -1)) . ')';
}
if ($this->status === 'iv') {
if (!$_quoted_string) {
if (strpos($_cur_string,',') !== false)
// we can on only remove space next to ','
$_cur_string = implode(',', array_map('trim', explode(',',$_cur_string)));
// and multiple spaces (too expensive)
if (strpos($_cur_string, ' ') !== false)
$_cur_string = preg_replace(",\s+,", ' ', $_cur_string);
}
$this->sub_value .= $_cur_string;
} elseif ($this->status === 'is') {
$this->selector .= $_cur_string;
} elseif ($this->status === 'instr') {
$this->cur_string[count($this->cur_string)-1] .= $_cur_string;
}
} else {
$this->cur_string[count($this->cur_string)-1] = $_cur_string;
}
break;
/* Case in-comment */
case 'ic':
if ($string[$i] === '*' && $string[$i + 1] === '/') {
$this->status = array_pop($this->from);
$i++;
if (strlen($cur_comment) > 1 and strncmp($cur_comment, '!', 1) === 0) {
$this->_add_token(IMPORTANT_COMMENT, $cur_comment);
$this->css_add_important_comment($cur_comment);
}
else {
$this->_add_token(COMMENT, $cur_comment);
}
$cur_comment = '';
} else {
$cur_comment .= $string[$i];
}
break;
}
}
$this->optimise->postparse();
$this->print->_reset();
@setlocale(LC_ALL, $old); // Set locale back to original setting
return!(empty($this->css) && empty($this->import) && empty($this->charset) && empty($this->tokens) && empty($this->namespace));
}
/**
* format() in font-face needs quoted values for somes browser (FF at least)
*
* @param $value
* @return string
*/
public function quote_font_format($value) {
if (strncmp($value,'format',6) == 0) {
$p = strpos($value,')',7);
$end = substr($value,$p);
$format_strings = $this->parse_string_list(substr($value, 7, $p-7));
if (!$format_strings) {
$value = '';
} else {
$value = 'format(';
foreach ($format_strings as $format_string) {
$value .= '"' . str_replace('"', '\\"', $format_string) . '",';
}
$value = substr($value, 0, -1) . $end;
}
}
return $value;
}
/**
* Explodes selectors
* @access private
* @version 1.0
*/
public function explode_selectors() {
// Explode multiple selectors
if ($this->get_cfg('merge_selectors') === 1) {
$new_sels = array();
$lastpos = 0;
$this->sel_separate[] = strlen($this->selector);
foreach ($this->sel_separate as $num => $pos) {
if ($num == count($this->sel_separate) - 1) {
$pos += 1;
}
$new_sels[] = substr($this->selector, $lastpos, $pos - $lastpos - 1);
$lastpos = $pos;
}
if (count($new_sels) > 1) {
foreach ($new_sels as $selector) {
if (isset($this->css[$this->at][$this->selector])) {
$this->merge_css_blocks($this->at, $selector, $this->css[$this->at][$this->selector]);
}
}
unset($this->css[$this->at][$this->selector]);
}
}
$this->sel_separate = array();
}
/**
* Checks if a character is escaped (and returns true if it is)
* @param string $string
* @param integer $pos
* @access public
* @return bool
* @version 1.02
*/
static function escaped(&$string, $pos) {
return!(@($string[$pos - 1] !== '\\') || csstidy::escaped($string, $pos - 1));
}
/**
* Add an important comment to the css code
* (one we want to keep)
* @param $comment
*/
public function css_add_important_comment($comment) {
if ($this->get_cfg('preserve_css') || trim($comment) == '') {
return;
}
if (!isset($this->css['!'])) {
$this->css['!'] = '';
}
else {
$this->css['!'] .= "\n";
}
$this->css['!'] .= $comment;
}
/**
* Adds a property with value to the existing CSS code
* @param string $media
* @param string $selector
* @param string $property
* @param string $new_val
* @access private
* @version 1.2
*/
public function css_add_property($media, $selector, $property, $new_val) {
if ($this->get_cfg('preserve_css') || trim($new_val) == '') {
return;
}
$this->added = true;
if (isset($this->css[$media][$selector][$property])) {
if (($this->is_important($this->css[$media][$selector][$property]) && $this->is_important($new_val)) || !$this->is_important($this->css[$media][$selector][$property])) {
$this->css[$media][$selector][$property] = trim($new_val);
}
} else {
$this->css[$media][$selector][$property] = trim($new_val);
}
}
/**
* Check if a current media section is the continuation of the last one
* if not inc the name of the media section to avoid a merging
*
* @param int|string $media
* @return int|string
*/
public function css_check_last_media_section_or_inc($media) {
// are we starting?
if (!$this->css || !is_array($this->css) || empty($this->css)) {
return $media;
}
// if the last @media is the same as this
// keep it
end($this->css);
$at = key($this->css);
if ($at == $media) {
return $media;
}
// else inc the section in the array
while (isset($this->css[$media]))
if (is_numeric($media))
$media++;
else
$media .= ' ';
return $media;
}
/**
* Start a new media section.
* Check if the media is not already known,
* else rename it with extra spaces
* to avoid merging
*
* @param string $current_media
* @param string $media
* @param bool $at_root
* @return string
*/
public function css_new_media_section($current_media, $new_media, $at_root = false) {
if ($this->get_cfg('preserve_css')) {
return $new_media;
}
// if we already are in a media and CSS level is 3, manage nested medias
if ($current_media
&& !$at_root
// numeric $current_media means DEFAULT_AT or inc
&& !is_numeric($current_media)
&& strncmp($this->get_cfg('css_level'), 'CSS3', 4) == 0) {
$new_media = rtrim($current_media) . "{" . rtrim($new_media);
}
return $this->css_check_last_media_section_or_inc($new_media);
}
/**
* Close a media section
* Find the parent media we were in before or the root
* @param $current_media
* @return string
*/
public function css_close_media_section($current_media) {
if ($this->get_cfg('preserve_css')) {
return '';
}
if (strpos($current_media, '{') !== false) {
$current_media = explode('{', $current_media);
array_pop($current_media);
$current_media = implode('{', $current_media);
return $current_media;
}
return '';
}
/**
* Start a new selector.
* If already referenced in this media section,
* rename it with extra space to avoid merging
* except if merging is required,
* or last selector is the same (merge siblings)
*
* never merge @font-face
*
* @param string $media
* @param string $selector
* @return string
*/
public function css_new_selector($media,$selector) {
if ($this->get_cfg('preserve_css')) {
return $selector;
}
$selector = trim($selector);
if (strncmp($selector,'@font-face',10)!=0) {
if ($this->settings['merge_selectors'] != false)
return $selector;
if (!$this->css || !isset($this->css[$media]) || !$this->css[$media])
return $selector;
// if last is the same, keep it
end($this->css[$media]);
$sel = key($this->css[$media]);
if ($sel == $selector) {
return $selector;
}
}
while (isset($this->css[$media][$selector]))
$selector .= ' ';
return $selector;
}
/**
* Start a new propertie.
* If already references in this selector,
* rename it with extra space to avoid override
*
* @param string $media
* @param string $selector
* @param string $property
* @return string
*/
public function css_new_property($media, $selector, $property) {
if ($this->get_cfg('preserve_css')) {
return $property;
}
if (!$this->css || !isset($this->css[$media][$selector]) || !$this->css[$media][$selector])
return $property;
while (isset($this->css[$media][$selector][$property]))
$property .= ' ';
return $property;
}
/**
* Adds CSS to an existing media/selector
* @param string $media
* @param string $selector
* @param array $css_add
* @access private
* @version 1.1
*/
public function merge_css_blocks($media, $selector, $css_add) {
foreach ($css_add as $property => $value) {
$this->css_add_property($media, $selector, $property, $value, false);
}
}
/**
* Checks if $value is !important.
* @param string $value
* @return bool
* @access public
* @version 1.0
*/
public function is_important(&$value) {
return (
strpos($value, '!') !== false // quick test
AND !strcasecmp(substr(str_replace($this->data['csstidy']['whitespace'], '', $value), -10, 10), '!important'));
}
/**
* Returns a value without !important
* @param string $value
* @return string
* @access public
* @version 1.0
*/
public function gvw_important($value) {
if ($this->is_important($value)) {
$value = trim($value);
$value = substr($value, 0, -9);
$value = trim($value);
$value = substr($value, 0, -1);
$value = trim($value);
return $value;
}
return $value;
}
/**
* Checks if the next word in a string from pos is a CSS property
* @param string $istring
* @param integer $pos
* @return bool
* @access private
* @version 1.2
*/
public function property_is_next($istring, $pos) {
$all_properties = & $this->data['csstidy']['all_properties'];
$istring = substr($istring, $pos, strlen($istring) - $pos);
$pos = strpos($istring, ':');
if ($pos === false) {
return false;
}
$istring = strtolower(trim(substr($istring, 0, $pos)));
if (isset($all_properties[$istring])) {
$this->log('Added semicolon to the end of declaration', 'Warning');
return true;
}
return false;
}
/**
* Checks if a property is valid
* @param string $property
* @return bool
* @access public
* @version 1.0
*/
public function property_is_valid($property) {
if (strpos($property, '--') === 0) {
$property = "--custom";
}
elseif (in_array(trim($property), $this->data['csstidy']['multiple_properties'])) {
$property = trim($property);
}
$all_properties = & $this->data['csstidy']['all_properties'];
return (isset($all_properties[$property]) && strpos($all_properties[$property], strtoupper($this->get_cfg('css_level'))) !== false );
}
/**
* Accepts a list of strings (e.g., the argument to format() in a @font-face src property)
* and returns a list of the strings. Converts things like:
*
* format(abc) => format("abc")
* format(abc def) => format("abc","def")
* format(abc "def") => format("abc","def")
* format(abc, def, ghi) => format("abc","def","ghi")
* format("abc",'def') => format("abc","def")
* format("abc, def, ghi") => format("abc, def, ghi")
*
* @param string
* @return array
*/
public function parse_string_list($value) {
$value = trim($value);
// Case: empty
if (!$value) return array();
$strings = array();
$in_str = false;
$current_string = '';
for ($i = 0, $_len = strlen($value); $i < $_len; $i++) {
if (($value[$i] === ',' || $value[$i] === ' ') && $in_str === true) {
$in_str = false;
$strings[] = $current_string;
$current_string = '';
} elseif ($value[$i] === '"' || $value[$i] === "'") {
if ($in_str === $value[$i]) {
$strings[] = $current_string;
$in_str = false;
$current_string = '';
continue;
} elseif (!$in_str) {
$in_str = $value[$i];
}
} else {
if ($in_str) {
$current_string .= $value[$i];
} else {
if (!preg_match("/[\s,]/", $value[$i])) {
$in_str = true;
$current_string = $value[$i];
}
}
}
}
if ($current_string) {
$strings[] = $current_string;
}
return $strings;
}
}