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Editing: class.csstidy.php
<?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('class.csstidy_print.php'); /** * Contains a class for optimising CSS code * * @version 1.0 */ require('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 2.0.1 */ 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 = '1.7.3'; /** * 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(); /** * Loads standard template and sets default settings * @access private * @version 1.3 */ public function __construct() { $data = array(); include('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; } }
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