<?php
/**
* CSSTidy - CSS Parser and Optimiser
*
* 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
*
* This file is part of CSSTidy.
*
* CSSTidy is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with CSSTidy; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* @license http://opensource.org/licenses/gpl-license.php GNU Public License
* @package csstidy
* @author Florian Schmitz (floele at gmail dot com) 2005
*/
/**
* Various CSS data needed for correct optimisations etc.
*
* @version 1.2
*/
require("data.inc.php");
/**
* All functions which are not directly related to the parser class
*
* Not required. If this file is not included, csstidy does without these functions.
* @version 1.2
*/
@include("functions.inc.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
* @version 1.1beta
*/
class csstidy {
/**
* Saves the parsed CSS
* @var array
* @access public
*/
var $css = array();
/**
* Saves the CSS charset (@charset)
* @var string
* @access private
*/
var $charset = '';
/**
* Saves all @import URLs
* @var array
* @access private
*/
var $import = array();
/**
* Saves the namespace
* @var string
* @access private
*/
var $namespace = '';
/**
* Saves the input CSS string
* @var string
* @access private
*/
var $input_css = '';
/**
* Saves the formatted CSS string
* @var string
* @access public
*/
var $output_css = '';
/**
* Saves the formatted CSS string (plain text)
* @var string
* @access public
*/
var $output_css_plain = '';
/**
* Saves the templates
* @var array
* @access private
* @see http://cdburnerxp.se/cssparse/template.htm
*/
var $template = array();
/**
* Contains the version of csstidy
* @var string
* @access private
*/
var $version = '1.1beta';
/**
* Stores comments
* @var array
* @access private
*/
var $comments = array();
/**
* Stores the settings
* @var array
* @access private
*/
var $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
*/
var $status = 'is';
/**
* Saves the current at rule (@media)
* @var string
* @access private
*/
var $at = '';
/**
* Saves the current selector
* @var string
* @access private
*/
var $selector = '';
/**
* Saves the current property
* @var string
* @access private
*/
var $property = '';
/**
* Saves the position of , in selectors
* @var array
* @access private
*/
var $sel_seperate = array();
/**
* Saves the current value
* @var string
* @access private
*/
var $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
*/
var $sub_value = '';
/**
* Array which saves all subvalues for a property.
* @var array
* @see sub_value
* @access private
*/
var $sub_value_arr = array();
/**
* Saves the char which opened the last string
* @var string
* @access private
*/
var $str_char = '';
/**
* Status where the string has been started (is or iv)
* @var string
* @access private
*/
var $str_from = '';
/**
* Variable needed to manage string-in-strings, for example url("foo.png")
* @var string
* @access private
*/
var $str_in_str = false;
/**
* =true if in invalid at-rule
* @var bool
* @access private
*/
var $invalid_at = false;
/**
* =true if something has been added to the current selector
* @var bool
* @access private
*/
var $added = false;
/**
* Status where the comment has been started
* @var string
* @access private
*/
var $comment_from = '';
/**
* Array which saves the message log
* @var array
* @access private
*/
var $log = array();
/**
* Saves the line number
* @var integer
* @access private
*/
var $line = 1;
/**
* Loads standard template and sets default settings
* @access private
* @version 1.1
*/
function csstidy()
{
$this->settings['remove_bslash'] = true;
$this->settings['compress_colors'] = true;
$this->settings['compress_font-weight'] = true;
$this->settings['lowercase_s'] = false;
$this->settings['save_ie_hacks'] = false;
$this->settings['optimise_shorthands'] = true;
$this->settings['only_safe_optimisations'] = true;
$this->settings['remove_last_;'] = false;
$this->settings['uppercase_properties'] = false;
$this->settings['sort_properties'] = false;
$this->settings['sort_selectors'] = false;
$this->settings['merge_selectors'] = 2;
$this->settings['discard_invalid_properties'] = false;
$this->settings['save_comments'] = false;
$this->settings['css_level'] = 'CSS2.1';
$this->load_template('default');
}
/**
* Get the value of a setting.
* @param string $setting
* @access public
* @return mixed
* @version 1.0
*/
function get_cfg($setting)
{
if(isset($this->settings[$setting]))
{
return $this->settings[$setting];
}
return false;
}
/**
* Set the value of a setting.
* @param string $setting
* @param mixed $value
* @access public
* @return bool
* @version 1.0
*/
function set_cfg($setting,$value)
{
if(isset($this->settings[$setting]) && $value !== '')
{
$this->settings[$setting] = $value;
return true;
}
return false;
}
/**
* Add a message to the message log
* @param string $message
* @param string $type
* @param integer $line
* @access private
* @version 1.0
*/
function log($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 $i
* @access private
* @return string
* @version 1.2
*/
function unicode(&$string,&$i)
{
++$i;
$add = '';
$tokens =& $GLOBALS['csstidy']['tokens'];
$replaced = false;
while($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 != '\\' || !$this->get_cfg('remove_bslash') || in_array($string{$i+1},$tokens))
{
return $add;
}
if($add == '\\')
{
$this->log('Removed unnecessary backslash','Information');
}
return '';
}
/**
* Compresses shorthand values. Example: margin:1px 1px 1px 1px -> margin:1px
* @param string $value
* @access private
* @return string
* @version 1.0
*/
function shorthand($value)
{
$important = '';
if(csstidy::is_important($value))
{
$values = csstidy::gvw_important($value);
$important = ' !important';
}
else $values = $value;
$values = explode(' ',$values);
switch(count($values))
{
case 4:
if($values[0] == $values[1] && $values[0] == $values[2] && $values[0] == $values[3])
{
return $values[0].$important;
}
elseif($values[1] == $values[3] && $values[0] == $values[2])
{
return $values[0].' '.$values[1].$important;
}
elseif($values[1] == $values[3])
{
return $values[0].' '.$values[1].' '.$values[2].$important;
}
break;
case 3:
if($values[0] == $values[1] && $values[0] == $values[2])
{
return $values[0].$important;
}
elseif($values[0] == $values[2])
{
return $values[0].' '.$values[1].$important;
}
break;
case 2:
if($values[0] == $values[1])
{
return $values[0].$important;
}
break;
}
return $value;
}
/**
* Get compression ratio and prints the code if necessary.
* @access public
* @return float
* @version 1.1
*/
function get_ratio()
{
if(empty($this->output_css_plain))
{
$this->print_code($this->css);
}
return $ratio = round(((strlen($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
*/
function get_diff()
{
if(empty($this->output_css_plain))
{
$this->print_code($this->css);
}
$diff = (strlen($this->output_css_plain))-(strlen($this->input_css));
if($diff > 0)
{
return '+'.$diff;
}
elseif($diff == 0)
{
return '+-'.$diff;
}
else
{
return $diff;
}
}
/**
* Get the size of either input or output CSS in KB
* @param string $loc default is "output"
* @access public
* @return integer
* @version 1.0
*/
function size($loc = 'output')
{
if($loc == 'output' && empty($this->output_css))
{
$this->print_code($this->css);
}
if($loc == 'input')
{
return (strlen($this->input_css)/1000);
}
else
{
return (strlen(html_entity_decode(strip_tags($this->output_css)))/1000);
}
}
/**
* 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 $content as filename if true
* @access public
* @version 1.1
* @see http://csstidy.sourceforge.net/templates.php
*/
function load_template($content,$from_file=true)
{
$predefined_templates =& $GLOBALS['csstidy']['predefined_templates'];
if($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 $url
* @access public
* @version 1.0
*/
function parse_from_url($url)
{
$content = @file_get_contents($url);
return $this->parse($content);
}
/**
* Checks if there is a token at the current position
* @param string $string
* @param integer $i
* @access public
* @version 1.1
*/
function is_token(&$string,$i)
{
$tokens =& $GLOBALS['csstidy']['tokens'];
if(in_array($string{$i},$tokens) && !csstidy::escaped($string,$i))
{
return true;
}
return false;
}
/**
* Parses CSS in $string. The code is saved as array in $this->css
* @param string $string the CSS code
* @access public
* @return bool
* @version 1.1beta
*/
function parse($string) {
$shorthands =& $GLOBALS['csstidy']['shorthands'];
$all_properties =& $GLOBALS['csstidy']['all_properties'];
$at_rules =& $GLOBALS['csstidy']['at_rules'];
$this->css = array();
$this->input_css = $string;
$string = str_replace("\r\n","\n",$string) . ' ';
$cur_comment = '';
for ($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(csstidy::is_token($string,$i))
{
if($string{$i} == '/' && @$string{$i+1} == '*')
{
$this->status = 'ic'; ++$i;
$this->comment_from = 'at';
}
elseif($string{$i} == '{')
{
$this->status = 'is';
}
elseif($string{$i} == ',')
{
$this->at = trim($this->at).',';
}
elseif($string{$i} == '\\')
{
$this->at .= $this->unicode($string,$i);
}
}
else
{
$lastpos = strlen($this->at)-1;
if(!( (ctype_space($this->at{$lastpos}) || csstidy::is_token($this->at,$lastpos) && $this->at{$lastpos} == ',') && ctype_space($string{$i})))
{
$this->at .= $string{$i};
}
}
break;
/* Case in-selector */
case 'is':
if(csstidy::is_token($string,$i))
{
if($string{$i} == '/' && @$string{$i+1} == '*' && trim($this->selector) == '')
{
$this->status = 'ic'; ++$i;
$this->comment_from = 'is';
}
elseif($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') ? $this->at = '@'.$name : $this->selector = '@'.$name;
$this->status = $type;
$i += strlen($name);
$this->invalid_at = false;
}
}
if($this->invalid_at)
{
$this->selector = '@'.$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->selector .= $string{$i};
$this->status = 'instr';
$this->str_char = $string{$i};
$this->str_from = 'is';
}
elseif($this->invalid_at && $string{$i} == ';')
{
$this->invalid_at = false;
$this->status = 'is';
}
elseif($string{$i} == '{')
{
$this->status = 'ip';
$this->added = false;
}
elseif($string{$i} == '}')
{
$this->at = '';
$this->selector = '';
$this->sel_seperate = array();
}
elseif($string{$i} == ',')
{
$this->selector = trim($this->selector).',';
$this->sel_seperate[] = strlen($this->selector);
}
elseif($string{$i} == '\\')
{
$this->selector .= $this->unicode($string,$i);
}
else $this->selector .= $string{$i};
}
else
{
$lastpos = strlen($this->selector)-1;
if($lastpos == -1 || !( (ctype_space($this->selector{$lastpos}) || csstidy::is_token($this->selector,$lastpos) && $this->selector{$lastpos} == ',') && ctype_space($string{$i})))
{
$this->selector .= $string{$i};
}
}
break;
/* Case in-property */
case 'ip':
if(csstidy::is_token($string,$i))
{
if(($string{$i} == ':' || $string{$i} == '=') && $this->property != '')
{
$this->status = 'iv';
}
elseif($string{$i} == '/' && @$string{$i+1} == '*' && $this->property == '')
{
$this->status = 'ic'; ++$i;
$this->comment_from = 'ip';
}
elseif($string{$i} == '}')
{
$this->explode_selectors();
$this->status = 'is';
$this->invalid_at = false;
if($this->selector{0} != '@' && !$this->added)
{
$this->log('Removed empty selector: '.trim($this->selector),'Information');
}
$this->selector = '';
$this->property = '';
}
elseif($string{$i} == ';')
{
$this->property = '';
}
elseif($string{$i} == '\\')
{
$this->property .= $this->unicode($string,$i);
}
}
elseif(!ctype_space($string{$i}))
{
$this->property .= $string{$i};
}
break;
/* Case in-value */
case 'iv':
$pn = (ctype_space($string{$i}) && $this->property_is_next($string,$i+1) || $i == strlen($string)-1);
if(csstidy::is_token($string,$i) || $pn)
{
if($string{$i} == '/' && @$string{$i+1} == '*')
{
$this->status = 'ic'; ++$i;
$this->comment_from = 'iv';
}
elseif(($string{$i} == '"' || $string{$i} == "'" || $string{$i} == '('))
{
$this->sub_value .= $string{$i};
$this->str_char = ($string{$i} == '(') ? ')' : $string{$i};
$this->status = 'instr';
$this->str_from = 'iv';
}
elseif($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')
{
$this->sub_value_arr[] = trim($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_seperate = 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 == '')
{
$this->at = 'standard';
}
// case settings
if($this->get_cfg('lowercase_s'))
{
$this->selector = strtolower($this->selector);
}
$this->property = strtolower($this->property);
$this->optimise_add_subvalue();
$this->value = implode(' ',$this->sub_value_arr);
$this->selector = trim($this->selector);
// Remove whitespace at ! important
if($this->value != $this->c_important($this->value))
{
$this->log('Optimised !important','Information');
}
// optimise shorthand properties
if(isset($shorthands[$this->property]))
{
$temp = csstidy::shorthand($this->value);
if($temp != $this->value)
{
$this->log('Optimised shorthand notation ('.$this->property.'): Changed "'.$this->value.'" to "'.$temp.'"','Information');
}
$this->value = $temp;
}
// Compress font-weight
if($this->property == 'font-weight' && $this->get_cfg('compress_font-weight'))
{
$this->c_font_weight($this->value);
}
$valid = (isset($all_properties[$this->property]) && strpos($all_properties[$this->property],strtoupper($this->get_cfg('css_level'))) !== false );
if(!$this->invalid_at && trim($this->value) !== '' && (!$this->get_cfg('discard_invalid_properties') || $valid))
{
$this->css_add_property($this->at,$this->selector,$this->property,$this->value);
// Further Optimisation
if($this->property === 'background' && $this->get_cfg('optimise_shorthands') && function_exists('dissolve_short_bg') && !$this->get_cfg('only_safe_optimisations'))
{
unset($this->css[$this->at][$this->selector]['background']);
$this->merge_css_blocks($this->at,$this->selector,dissolve_short_bg($this->value));
}
if(isset($shorthands[$this->property]) && $this->get_cfg('optimise_shorthands') && function_exists('dissolve_4value_shorthands'))
{
$this->merge_css_blocks($this->at,$this->selector,dissolve_4value_shorthands($this->property,$this->value));
if(is_array($shorthands[$this->property]))
{
unset($this->css[$this->at][$this->selector][$this->property]);
}
}
}
if(!$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();
$this->value = '';
if($this->get_cfg('save_comments') && $cur_comment != '')
{
$this->comments[$this->at.$this->selector] = rtrim($cur_comment,"\n\r");
$cur_comment = '';
}
}
if($string{$i} == '}')
{
$this->explode_selectors();
$this->status = 'is';
if($this->selector{0} != '@' && !$this->added)
{
$this->log('Removed empty selector: '.trim($this->selector),'Information');
}
$this->invalid_at = false;
$this->selector = '';
}
}
elseif(!$pn)
{
$this->sub_value .= $string{$i};
if(ctype_space($string{$i}))
{
$this->optimise_add_subvalue();
}
}
break;
/* Case in string */
case 'instr':
if($this->str_char == ')' && $string{$i} == '"' && !$this->str_in_str && !csstidy::escaped($string,$i))
{
$this->str_in_str = true;
}
elseif($this->str_char == ')' && $string{$i} == '"' && $this->str_in_str && !csstidy::escaped($string,$i))
{
$this->str_in_str = false;
}
if($string{$i} == $this->str_char && !csstidy::escaped($string,$i) && !$this->str_in_str)
{
$this->status = $this->str_from;
}
$temp_add = $string{$i};
// ...and no not-escaped backslash at the previous position
if( ($string{$i} == "\n" || $string{$i} == "\r") && !($string{$i-1} == '\\' && !csstidy::escaped($string,$i-1)) )
{
$temp_add = "\\A ";
$this->log('Fixed incorrect newline in string','Warning');
}
if($this->str_from == 'iv')
{
$this->sub_value .= $temp_add;
}
elseif($this->str_from == 'is')
{
$this->selector .= $temp_add;
}
break;
/* Case in-comment */
case 'ic':
if($string{$i} == '*' && $string{$i+1} == '/')
{
$this->status = $this->comment_from;
if($this->comment_from == 'is') $cur_comment .= $this->template[15];
$i++;
}
elseif($this->comment_from == 'is' && $this->get_cfg('save_comments'))
{
$cur_comment .= $string{$i};
}
break;
}
}
if($this->get_cfg('merge_selectors') > 1)
{
foreach($this->css as $medium => $value)
{
if($this->get_cfg('merge_selectors') == 2) csstidy::merge_selectors($this->css[$medium]);
if($this->get_cfg('merge_selectors') == 3) merge_selectors_and_their_properties_smart($this->css[$medium]);
}
}
if($this->get_cfg('optimise_shorthands'))
{
foreach($this->css as $medium => $value)
{
foreach($value as $selector => $value1)
{
if(function_exists('merge_4value_shorthands')) $this->css[$medium][$selector] = merge_4value_shorthands($this->css[$medium][$selector]);
if(function_exists('merge_bg') && !$this->get_cfg('only_safe_optimisations')) $this->css[$medium][$selector] = merge_bg($this->css[$medium][$selector]);
if(empty($this->css[$medium][$selector]))
{
unset($this->css[$medium][$selector]);
}
}
}
}
return (empty($this->css) && empty($this->import) && empty($this->charset) && empty($this->namespace)) ? false : true;
}
/**
* Explodes selectors
* @access private
* @version 1.0
*/
function explode_selectors()
{
// Explode multiple selectors
if($this->get_cfg('merge_selectors') == 1 || $this->get_cfg('merge_selectors') == 3)
{
$new_sels = array();
$lastpos = 0;
$this->sel_seperate[] = strlen($this->selector);
foreach($this->sel_seperate as $num => $pos)
{
if($num == count($this->sel_seperate)-1) {
$pos += 1;
}
$new_sels[] = substr($this->selector,$lastpos,$pos-$lastpos-1);
$lastpos = $pos;
}
if(count($new_sels) > 1)
{
foreach($new_sels as $selector)
{
$this->merge_css_blocks($this->at,$selector,$this->css[$this->at][$this->selector]);
}
unset($this->css[$this->at][$this->selector]);
}
}
$this->sel_seperate = array();
}
/**
* Optimises a sub-value and adds it to sub_value_arr
* @access private
* @version 1.0
*/
function optimise_add_subvalue()
{
$replace_colors =& $GLOBALS['csstidy']['replace_colors'];
$this->sub_value = trim($this->sub_value);
if($this->sub_value != '')
{
if(function_exists('compress_numbers'))
{
$temp = compress_numbers($this->sub_value,$this->property);
if($temp != $this->sub_value)
{
if(strlen($temp) > strlen($this->sub_value))
{
$this->log('Fixed invalid number: Changed "'.$this->sub_value.'" to "'.$temp.'"','Warning');
}
else
$this->log('Optimised number: Changed "'.$this->sub_value.'" to "'.$temp.'"','Information');
$this->sub_value = $temp;
}
}
if($this->get_cfg('compress_colors') && function_exists('cut_color'))
{
$temp = cut_color($this->sub_value);
if($temp != $this->sub_value)
{
if(isset($replace_colors[$this->sub_value]))
{
$this->log('Fixed invalid color name: Changed "'.$this->sub_value.'" to "'.$temp.'"','Warning');
}
else
$this->log('Optimised color: Changed "'.$this->sub_value.'" to "'.$temp.'"','Information');
$this->sub_value = $temp;
}
}
$this->sub_value_arr[] = $this->sub_value;
$this->sub_value = '';
}
}
/**
* Checks if a character is escaped (and returns true if it is)
* @param string $string
* @param integer $pos
* @access public
* @return bool
* @version 1.01
*/
function escaped(&$string,$pos)
{
if(@($string{$pos-1} != '\\') || csstidy::escaped($string,$pos-1))
{
return false;
}
return true;
}
/**
* Adds a property with value to the existing CSS code
* @param string $media
* @param string $selector
* @param string $property
* @param string $new_val
* @param bool $ie if $ie == false IE Hacks are not saved even if it is enabled in settings
* @access private
* @version 1.1
*/
function css_add_property($media,$selector,$property,$new_val,$ie=true)
{
$whitespace =& $GLOBALS['csstidy']['whitespace'];
if($this->get_cfg('save_ie_hacks') && $ie)
{
if(isset($this->css[$media][$selector][$property]) && csstidy::is_important($this->css[$media][$selector][$property])
&& substr(str_replace($whitespace,'',$selector),0,5) !== '*html')
{
$this->log('Converted !important-hack in selector "'.$this->selector.'"','Information');
if(substr(str_replace($whitespace,'',$selector),0,4) == 'html')
{
$this->css_add_property($media,'* '.$selector,$property,$new_val.' !important',false);
}
else
{
$this->css_add_property($media,'* html '.$selector,$property,$new_val.' !important',false);
}
}
else
{
$this->css_add_property($media,$selector,$property,$new_val,false);
}
}
else
{
$this->added = true;
if(isset($this->css[$media][$selector][$property]))
{
if((csstidy::is_important($this->css[$media][$selector][$property]) && csstidy::is_important($new_val)) || !csstidy::is_important($this->css[$media][$selector][$property]))
{
unset($this->css[$media][$selector][$property]);
$this->css[$media][$selector][$property] = trim($new_val);
}
}
else
{
$this->css[$media][$selector][$property] = trim($new_val);
}
}
}
/**
* Adds CSS to an existing media/selector
* @param string $media
* @param string $selector
* @param array $css_add
* @access private
* @version 1.1
*/
function merge_css_blocks($media,$selector,$css_add)
{
foreach($css_add as $property => $value)
{
$this->css_add_property($media,$selector,$property,$value,false);
}
}
/**
* Merges selectors with same properties. Example: a{color:red} b{color:red} -> a,b{color:red}
* Very basic and has at least one bug. Hopefully there is a replacement soon.
* @param array $array
* @return array
* @access public
* @version 1.2
*/
function merge_selectors(&$array)
{
$css = $array;
foreach($css as $key => $value)
{
if(!isset($css[$key]))
{
continue;
}
$newsel = '';
// Check if properties also exist in another selector
$keys = array();
// PHP bug (?) without $css = $array; here
foreach($css as $selector => $vali)
{
if($selector == $key)
{
continue;
}
if($css[$key] === $vali)
{
$keys[] = $selector;
}
}
if(!empty($keys))
{
$newsel = $key;
unset($css[$key]);
foreach($keys as $selector)
{
unset($css[$selector]);
$newsel .= ','.$selector;
}
$css[$newsel] = $value;
}
}
$array = $css;
}
/**
* Checks if $value is !important.
* @param string $value
* @return bool
* @access public
* @version 1.0
*/
function is_important(&$value)
{
$whitespace =& $GLOBALS['csstidy']['whitespace'];
if(!strcasecmp(substr(str_replace($whitespace,'',$value),-10,10),'!important'))
{
return true;
}
return false;
}
/**
* Returns a value without !important
* @param string $value
* @return string
* @access public
* @version 1.0
*/
function gvw_important($value)
{
if(csstidy::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;
}
/**
* Removes unnecessary whitespace in ! important
* @param string $string
* @return string
* @access public
* @version 1.1
*/
function c_important(&$string)
{
if(csstidy::is_important($string))
{
$string = csstidy::gvw_important($string) . ' !important';
}
return $string;
}
/**
* Same as htmlspecialchars, only that chars are not replaced if $plain !== true. This makes print_code() cleaner.
* @param string $string
* @param bool $plain
* @return string
* @see csstidy::print_code()
* @access public
* @version 1.0
*/
function htmlsp($string, $plain)
{
if($plain !== true)
{
return htmlspecialchars($string);
}
return $string;
}
/**
* Returns the formatted CSS Code and saves it into $this->output_css
* @param array $css
* @return string
* @access public
* @version 1.3
*/
function print_code($css = NULL,$plain = false)
{
$output = '';
if($css === NULL)
{
$css = $this->css;
}
if($plain === true)
{
$this->template = array_map("strip_tags", $this->template);
}
if(!empty($this->charset))
{
$output .= $this->template[0].'@charset '.$this->template[5].$this->charset.$this->template[6].$this->template[12];
}
if(!empty($this->import))
{
for ($i = 0, $size = count($this->import); $i < $size; $i ++) {
$output .= $this->template[0].'@import '.$this->template[5].$this->import[$i].$this->template[6].$this->template[12];
}
}
if(!empty($this->namespace))
{
$output .= $this->template[0].'@namespace '.$this->template[5].$this->namespace.$this->template[6].$this->template[12];
}
ksort($css);
foreach($css as $medium => $val)
{
if ($medium !== 'standard')
{
$output .= $this->template[0].csstidy::htmlsp($medium,$plain).$this->template[1];
}
if ($this->get_cfg('sort_selectors')) ksort($val);
foreach($val as $selector => $vali)
{
if ($this->get_cfg('sort_properties')) ksort($vali);
if ($medium !== 'standard') $output .= $this->template[10];
if(isset($this->comments[$medium.$selector]))
{
$output .= $this->template[13].'/*'.$this->comments[$medium.$selector].'*/'.$this->template[14];
}
$output .= ($selector{0} !== '@') ? $this->template[2].csstidy::htmlsp($selector,$plain) : $this->template[0].csstidy::htmlsp($selector,$plain);
$output .= ($medium !== 'standard') ? $this->template[11] : $this->template[3];
$i = 0; foreach($vali as $property => $valj)
{
$i++;
if ($medium !== 'standard') $output .= $this->template[10];
$output .= $this->template[4];
$output .= ($this->get_cfg('uppercase_properties')) ? csstidy::htmlsp(strtoupper($property),$plain) : csstidy::htmlsp($property,$plain);
$output .= ':'.$this->template[5].csstidy::htmlsp($valj,$plain);
$output .= ($this->get_cfg('remove_last_;') && $i === count($vali)) ? str_replace(';','',$this->template[6]) : $this->template[6];
}
if ($medium !== 'standard') $output .= $this->template[10];
$output .= $this->template[7];
if (( end($val) !== $vali && $medium !== 'standard') || $medium === 'standard') $output .= $this->template[8];
}
if ($medium != 'standard') $output .= $this->template[9];
}
$output = trim($output);
if($plain !== true)
{
$this->output_css = $output;
$this->print_code($css, true);
}
else
{
$this->output_css_plain = $output;
}
return $output;
}
/**
* Checks if the next word in a string from pos is a CSS property
* @param string $istring
* @param integer $pos
* @return bool
* @access private
* @version 1.2
*/
function property_is_next($istring, $pos)
{
$all_properties =& $GLOBALS['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;
}
/**
* Compresses font-weight (not very effective but anyway :-p )
* @param string $value
* @access private
* @return bool
* @version 1.1
*/
function c_font_weight(&$value)
{
$important = '';
if(csstidy::is_important($value))
{
$important = ' !important';
$value = csstidy::gvw_important($value);
}
if($value == 'bold')
{
$value = '700'.$important;
$this->log('Optimised font-weight: Changed "bold" to "700"','Information');
}
else if($value == 'normal')
{
$value = '400'.$important;
$this->log('Optimised font-weight: Changed "normal" to "400"','Information');
}
}
}
?>
