--- /dev/null
+<?php
+
+/**
+ * CSSTidy - CSS Parser and Optimiser
+ *
+ * CSS Optimising Class
+ * This class optimises CSS data generated by csstidy.
+ *
+ * Copyright 2005, 2006, 2007 Florian Schmitz
+ *
+ * This file is part of CSSTidy.
+ *
+ * CSSTidy is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; either version 2.1 of the License, or
+ * (at your option) any later version.
+ *
+ * CSSTidy is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * @license http://opensource.org/licenses/lgpl-license.php GNU Lesser General Public License
+ * @package csstidy
+ * @author Florian Schmitz (floele at gmail dot com) 2005-2007
+ * @author Brett Zamir (brettz9 at yahoo dot com) 2007
+ * @author Nikolay Matsievsky (speed at webo dot name) 2009-2010
+ * @author Cedric Morin (cedric at yterium dot com) 2010-2012
+ */
+
+/**
+ * CSS Optimising Class
+ *
+ * This class optimises CSS data generated by csstidy.
+ *
+ * @package csstidy
+ * @author Florian Schmitz (floele at gmail dot com) 2005-2006
+ * @version 1.0
+ */
+class csstidy_optimise {
+
+ /**
+ * Constructor
+ * @param array $css contains the class csstidy
+ * @access private
+ * @version 1.0
+ */
+ function csstidy_optimise(&$css) {
+ $this->parser = & $css;
+ $this->css = & $css->css;
+ $this->sub_value = & $css->sub_value;
+ $this->at = & $css->at;
+ $this->selector = & $css->selector;
+ $this->property = & $css->property;
+ $this->value = & $css->value;
+ }
+
+ /**
+ * Optimises $css after parsing
+ * @access public
+ * @version 1.0
+ */
+ function postparse() {
+ if ($this->parser->get_cfg('preserve_css')) {
+ return;
+ }
+
+ if ($this->parser->get_cfg('merge_selectors') === 2) {
+ foreach ($this->css as $medium => $value) {
+ $this->merge_selectors($this->css[$medium]);
+ }
+ }
+
+ if ($this->parser->get_cfg('discard_invalid_selectors')) {
+ foreach ($this->css as $medium => $value) {
+ $this->discard_invalid_selectors($this->css[$medium]);
+ }
+ }
+
+ if ($this->parser->get_cfg('optimise_shorthands') > 0) {
+ foreach ($this->css as $medium => $value) {
+ foreach ($value as $selector => $value1) {
+ $this->css[$medium][$selector] = csstidy_optimise::merge_4value_shorthands($this->css[$medium][$selector]);
+
+ if ($this->parser->get_cfg('optimise_shorthands') < 2) {
+ continue;
+ }
+
+ $this->css[$medium][$selector] = csstidy_optimise::merge_font($this->css[$medium][$selector]);
+
+ if ($this->parser->get_cfg('optimise_shorthands') < 3) {
+ continue;
+ }
+
+ $this->css[$medium][$selector] = csstidy_optimise::merge_bg($this->css[$medium][$selector]);
+ if (empty($this->css[$medium][$selector])) {
+ unset($this->css[$medium][$selector]);
+ }
+ }
+ }
+ }
+ }
+
+ /**
+ * Optimises values
+ * @access public
+ * @version 1.0
+ */
+ function value() {
+ $shorthands = & $GLOBALS['csstidy']['shorthands'];
+
+ // optimise shorthand properties
+ if (isset($shorthands[$this->property])) {
+ $temp = csstidy_optimise::shorthand($this->value); // FIXME - move
+ if ($temp != $this->value) {
+ $this->parser->log('Optimised shorthand notation (' . $this->property . '): Changed "' . $this->value . '" to "' . $temp . '"', 'Information');
+ }
+ $this->value = $temp;
+ }
+
+ // Remove whitespace at ! important
+ if ($this->value != $this->compress_important($this->value)) {
+ $this->parser->log('Optimised !important', 'Information');
+ }
+ }
+
+ /**
+ * Optimises shorthands
+ * @access public
+ * @version 1.0
+ */
+ function shorthands() {
+ $shorthands = & $GLOBALS['csstidy']['shorthands'];
+
+ if (!$this->parser->get_cfg('optimise_shorthands') || $this->parser->get_cfg('preserve_css')) {
+ return;
+ }
+
+ if ($this->property === 'font' && $this->parser->get_cfg('optimise_shorthands') > 1) {
+ $this->css[$this->at][$this->selector]['font']='';
+ $this->parser->merge_css_blocks($this->at, $this->selector, csstidy_optimise::dissolve_short_font($this->value));
+ }
+ if ($this->property === 'background' && $this->parser->get_cfg('optimise_shorthands') > 2) {
+ $this->css[$this->at][$this->selector]['background']='';
+ $this->parser->merge_css_blocks($this->at, $this->selector, csstidy_optimise::dissolve_short_bg($this->value));
+ }
+ if (isset($shorthands[$this->property])) {
+ $this->parser->merge_css_blocks($this->at, $this->selector, csstidy_optimise::dissolve_4value_shorthands($this->property, $this->value));
+ if (is_array($shorthands[$this->property])) {
+ $this->css[$this->at][$this->selector][$this->property] = '';
+ }
+ }
+ }
+
+ /**
+ * Optimises a sub-value
+ * @access public
+ * @version 1.0
+ */
+ function subvalue() {
+ $replace_colors = & $GLOBALS['csstidy']['replace_colors'];
+
+ $this->sub_value = trim($this->sub_value);
+ if ($this->sub_value == '') { // caution : '0'
+ return;
+ }
+
+ $important = '';
+ if (csstidy::is_important($this->sub_value)) {
+ $important = '!important';
+ }
+ $this->sub_value = csstidy::gvw_important($this->sub_value);
+
+ // Compress font-weight
+ if ($this->property === 'font-weight' && $this->parser->get_cfg('compress_font-weight')) {
+ if ($this->sub_value === 'bold') {
+ $this->sub_value = '700';
+ $this->parser->log('Optimised font-weight: Changed "bold" to "700"', 'Information');
+ } else if ($this->sub_value === 'normal') {
+ $this->sub_value = '400';
+ $this->parser->log('Optimised font-weight: Changed "normal" to "400"', 'Information');
+ }
+ }
+
+ $temp = $this->compress_numbers($this->sub_value);
+ if (strcasecmp($temp, $this->sub_value) !== 0) {
+ if (strlen($temp) > strlen($this->sub_value)) {
+ $this->parser->log('Fixed invalid number: Changed "' . $this->sub_value . '" to "' . $temp . '"', 'Warning');
+ } else {
+ $this->parser->log('Optimised number: Changed "' . $this->sub_value . '" to "' . $temp . '"', 'Information');
+ }
+ $this->sub_value = $temp;
+ }
+ if ($this->parser->get_cfg('compress_colors')) {
+ $temp = $this->cut_color($this->sub_value);
+ if ($temp !== $this->sub_value) {
+ if (isset($replace_colors[$this->sub_value])) {
+ $this->parser->log('Fixed invalid color name: Changed "' . $this->sub_value . '" to "' . $temp . '"', 'Warning');
+ } else {
+ $this->parser->log('Optimised color: Changed "' . $this->sub_value . '" to "' . $temp . '"', 'Information');
+ }
+ $this->sub_value = $temp;
+ }
+ }
+ $this->sub_value .= $important;
+ }
+
+ /**
+ * Compresses shorthand values. Example: margin:1px 1px 1px 1px -> margin:1px
+ * @param string $value
+ * @access public
+ * @return string
+ * @version 1.0
+ */
+ function shorthand($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;
+ }
+
+ /**
+ * Removes unnecessary whitespace in ! important
+ * @param string $string
+ * @return string
+ * @access public
+ * @version 1.1
+ */
+ function compress_important(&$string) {
+ if (csstidy::is_important($string)) {
+ $string = csstidy::gvw_important($string) . '!important';
+ }
+ return $string;
+ }
+
+ /**
+ * Color compression function. Converts all rgb() values to #-values and uses the short-form if possible. Also replaces 4 color names by #-values.
+ * @param string $color
+ * @return string
+ * @version 1.1
+ */
+ function cut_color($color) {
+ $replace_colors = & $GLOBALS['csstidy']['replace_colors'];
+
+ // if it's a string, don't touch !
+ if (strncmp($color,"'",1)==0 OR strncmp($color,'"',1)==0)
+ return $color;
+
+ /* expressions complexes de type gradient */
+ if (strpos($color,"(")!==false AND strncmp($color,'rgb(',4)!=0){
+ // on ne touche pas aux couleurs dans les expression ms, c'est trop sensible
+ if (stripos($color,"progid:")!==false)
+ return $color;
+ preg_match_all(",rgb\([^)]+\),i",$color,$matches,PREG_SET_ORDER);
+ if (count($matches)){
+ foreach ($matches as $m){
+ $color = str_replace($m[0],$this->cut_color($m[0]),$color);
+ }
+ }
+ preg_match_all(",#[0-9a-f]{6}(?=[^0-9a-f]),i",$color,$matches,PREG_SET_ORDER);
+ if (count($matches)){
+ foreach ($matches as $m){
+ $color = str_replace($m[0],$this->cut_color($m[0]),$color);
+ }
+ }
+ return $color;
+ }
+
+ // rgb(0,0,0) -> #000000 (or #000 in this case later)
+ if (strncasecmp($color, 'rgb(', 4)==0) {
+ $color_tmp = substr($color, 4, strlen($color) - 5);
+ $color_tmp = explode(',', $color_tmp);
+ for ($i = 0; $i < count($color_tmp); $i++) {
+ $color_tmp[$i] = trim($color_tmp[$i]);
+ if (substr($color_tmp[$i], -1) === '%') {
+ $color_tmp[$i] = round((255 * $color_tmp[$i]) / 100);
+ }
+ if ($color_tmp[$i] > 255)
+ $color_tmp[$i] = 255;
+ }
+ $color = '#';
+ for ($i = 0; $i < 3; $i++) {
+ if ($color_tmp[$i] < 16) {
+ $color .= '0' . dechex($color_tmp[$i]);
+ } else {
+ $color .= dechex($color_tmp[$i]);
+ }
+ }
+ }
+
+ // Fix bad color names
+ if (isset($replace_colors[strtolower($color)])) {
+ $color = $replace_colors[strtolower($color)];
+ }
+
+ // #aabbcc -> #abc
+ if (strlen($color) == 7) {
+ $color_temp = strtolower($color);
+ if ($color_temp{0} === '#' && $color_temp{1} == $color_temp{2} && $color_temp{3} == $color_temp{4} && $color_temp{5} == $color_temp{6}) {
+ $color = '#' . $color{1} . $color{3} . $color{5};
+ }
+ }
+
+ switch (strtolower($color)) {
+ /* color name -> hex code */
+ case 'black': return '#000';
+ case 'fuchsia': return '#f0f';
+ case 'white': return '#fff';
+ case 'yellow': return '#ff0';
+
+ /* hex code -> color name */
+ case '#800000': return 'maroon';
+ case '#ffa500': return 'orange';
+ case '#808000': return 'olive';
+ case '#800080': return 'purple';
+ case '#008000': return 'green';
+ case '#000080': return 'navy';
+ case '#008080': return 'teal';
+ case '#c0c0c0': return 'silver';
+ case '#808080': return 'gray';
+ case '#f00': return 'red';
+ }
+
+ return $color;
+ }
+
+ /**
+ * Compresses numbers (ie. 1.0 becomes 1 or 1.100 becomes 1.1 )
+ * @param string $subvalue
+ * @return string
+ * @version 1.2
+ */
+ function compress_numbers($subvalue) {
+ $unit_values = & $GLOBALS['csstidy']['unit_values'];
+ $color_values = & $GLOBALS['csstidy']['color_values'];
+
+ // for font:1em/1em sans-serif...;
+ if ($this->property === 'font') {
+ $temp = explode('/', $subvalue);
+ } else {
+ $temp = array($subvalue);
+ }
+ for ($l = 0; $l < count($temp); $l++) {
+ // if we are not dealing with a number at this point, do not optimise anything
+ $number = $this->AnalyseCssNumber($temp[$l]);
+ if ($number === false) {
+ return $subvalue;
+ }
+
+ // Fix bad colors
+ if (in_array($this->property, $color_values)) {
+ $temp[$l] = '#' . $temp[$l];
+ continue;
+ }
+
+ if (abs($number[0]) > 0) {
+ if ($number[1] == '' && in_array($this->property, $unit_values, true)) {
+ $number[1] = 'px';
+ }
+ } else {
+ $number[1] = '';
+ }
+
+ $temp[$l] = $number[0] . $number[1];
+ }
+
+ return ((count($temp) > 1) ? $temp[0] . '/' . $temp[1] : $temp[0]);
+ }
+
+ /**
+ * Checks if a given string is a CSS valid number. If it is,
+ * an array containing the value and unit is returned
+ * @param string $string
+ * @return array ('unit' if unit is found or '' if no unit exists, number value) or false if no number
+ */
+ function AnalyseCssNumber($string) {
+ // most simple checks first
+ if (strlen($string) == 0 || ctype_alpha($string{0})) {
+ return false;
+ }
+
+ $units = & $GLOBALS['csstidy']['units'];
+ $return = array(0, '');
+
+ $return[0] = floatval($string);
+ if (abs($return[0]) > 0 && abs($return[0]) < 1) {
+ if ($return[0] < 0) {
+ $return[0] = '-' . ltrim(substr($return[0], 1), '0');
+ } else {
+ $return[0] = ltrim($return[0], '0');
+ }
+ }
+
+ // Look for unit and split from value if exists
+ foreach ($units as $unit) {
+ $expectUnitAt = strlen($string) - strlen($unit);
+ if (!($unitInString = stristr($string, $unit))) { // mb_strpos() fails with "false"
+ continue;
+ }
+ $actualPosition = strpos($string, $unitInString);
+ if ($expectUnitAt === $actualPosition) {
+ $return[1] = $unit;
+ $string = substr($string, 0, - strlen($unit));
+ break;
+ }
+ }
+ if (!is_numeric($string)) {
+ return false;
+ }
+ return $return;
+ }
+
+ /**
+ * 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 = $css;
+ }
+
+ /**
+ * Removes invalid selectors and their corresponding rule-sets as
+ * defined by 4.1.7 in REC-CSS2. This is a very rudimentary check
+ * and should be replaced by a full-blown parsing algorithm or
+ * regular expression
+ * @version 1.4
+ */
+ function discard_invalid_selectors(&$array) {
+ $invalid = array('+' => true, '~' => true, ',' => true, '>' => true);
+ foreach ($array as $selector => $decls) {
+ $ok = true;
+ $selectors = array_map('trim', explode(',', $selector));
+ foreach ($selectors as $s) {
+ $simple_selectors = preg_split('/\s*[+>~\s]\s*/', $s);
+ foreach ($simple_selectors as $ss) {
+ if ($ss === '')
+ $ok = false;
+ // could also check $ss for internal structure,
+ // but that probably would be too slow
+ }
+ }
+ if (!$ok)
+ unset($array[$selector]);
+ }
+ }
+
+ /**
+ * Dissolves properties like padding:10px 10px 10px to padding-top:10px;padding-bottom:10px;...
+ * @param string $property
+ * @param string $value
+ * @return array
+ * @version 1.0
+ * @see merge_4value_shorthands()
+ */
+ function dissolve_4value_shorthands($property, $value) {
+ $shorthands = & $GLOBALS['csstidy']['shorthands'];
+ if (!is_array($shorthands[$property])) {
+ $return[$property] = $value;
+ return $return;
+ }
+
+ $important = '';
+ if (csstidy::is_important($value)) {
+ $value = csstidy::gvw_important($value);
+ $important = '!important';
+ }
+ $values = explode(' ', $value);
+
+
+ $return = array();
+ if (count($values) == 4) {
+ for ($i = 0; $i < 4; $i++) {
+ $return[$shorthands[$property][$i]] = $values[$i] . $important;
+ }
+ } elseif (count($values) == 3) {
+ $return[$shorthands[$property][0]] = $values[0] . $important;
+ $return[$shorthands[$property][1]] = $values[1] . $important;
+ $return[$shorthands[$property][3]] = $values[1] . $important;
+ $return[$shorthands[$property][2]] = $values[2] . $important;
+ } elseif (count($values) == 2) {
+ for ($i = 0; $i < 4; $i++) {
+ $return[$shorthands[$property][$i]] = (($i % 2 != 0)) ? $values[1] . $important : $values[0] . $important;
+ }
+ } else {
+ for ($i = 0; $i < 4; $i++) {
+ $return[$shorthands[$property][$i]] = $values[0] . $important;
+ }
+ }
+
+ return $return;
+ }
+
+ /**
+ * Explodes a string as explode() does, however, not if $sep is escaped or within a string.
+ * @param string $sep seperator
+ * @param string $string
+ * @return array
+ * @version 1.0
+ */
+ function explode_ws($sep, $string) {
+ $status = 'st';
+ $to = '';
+
+ $output = array();
+ $num = 0;
+ for ($i = 0, $len = strlen($string); $i < $len; $i++) {
+ switch ($status) {
+ case 'st':
+ if ($string{$i} == $sep && !csstidy::escaped($string, $i)) {
+ ++$num;
+ } elseif ($string{$i} === '"' || $string{$i} === '\'' || $string{$i} === '(' && !csstidy::escaped($string, $i)) {
+ $status = 'str';
+ $to = ($string{$i} === '(') ? ')' : $string{$i};
+ (isset($output[$num])) ? $output[$num] .= $string{$i} : $output[$num] = $string{$i};
+ } else {
+ (isset($output[$num])) ? $output[$num] .= $string{$i} : $output[$num] = $string{$i};
+ }
+ break;
+
+ case 'str':
+ if ($string{$i} == $to && !csstidy::escaped($string, $i)) {
+ $status = 'st';
+ }
+ (isset($output[$num])) ? $output[$num] .= $string{$i} : $output[$num] = $string{$i};
+ break;
+ }
+ }
+
+ if (isset($output[0])) {
+ return $output;
+ } else {
+ return array($output);
+ }
+ }
+
+ /**
+ * Merges Shorthand properties again, the opposite of dissolve_4value_shorthands()
+ * @param array $array
+ * @return array
+ * @version 1.2
+ * @see dissolve_4value_shorthands()
+ */
+ function merge_4value_shorthands($array) {
+ $return = $array;
+ $shorthands = & $GLOBALS['csstidy']['shorthands'];
+
+ foreach ($shorthands as $key => $value) {
+ if (isset($array[$value[0]]) && isset($array[$value[1]])
+ && isset($array[$value[2]]) && isset($array[$value[3]]) && $value !== 0) {
+ $return[$key] = '';
+
+ $important = '';
+ for ($i = 0; $i < 4; $i++) {
+ $val = $array[$value[$i]];
+ if (csstidy::is_important($val)) {
+ $important = '!important';
+ $return[$key] .= csstidy::gvw_important($val) . ' ';
+ } else {
+ $return[$key] .= $val . ' ';
+ }
+ unset($return[$value[$i]]);
+ }
+ $return[$key] = csstidy_optimise::shorthand(trim($return[$key] . $important));
+ }
+ }
+ return $return;
+ }
+
+ /**
+ * Dissolve background property
+ * @param string $str_value
+ * @return array
+ * @version 1.0
+ * @see merge_bg()
+ * @todo full CSS 3 compliance
+ */
+ function dissolve_short_bg($str_value) {
+ // don't try to explose background gradient !
+ if (stripos($str_value, "gradient(")!==FALSE)
+ return array('background'=>$str_value);
+
+ $background_prop_default = & $GLOBALS['csstidy']['background_prop_default'];
+ $repeat = array('repeat', 'repeat-x', 'repeat-y', 'no-repeat', 'space');
+ $attachment = array('scroll', 'fixed', 'local');
+ $clip = array('border', 'padding');
+ $origin = array('border', 'padding', 'content');
+ $pos = array('top', 'center', 'bottom', 'left', 'right');
+ $important = '';
+ $return = array('background-image' => null, 'background-size' => null, 'background-repeat' => null, 'background-position' => null, 'background-attachment' => null, 'background-clip' => null, 'background-origin' => null, 'background-color' => null);
+
+ if (csstidy::is_important($str_value)) {
+ $important = ' !important';
+ $str_value = csstidy::gvw_important($str_value);
+ }
+
+ $str_value = csstidy_optimise::explode_ws(',', $str_value);
+ for ($i = 0; $i < count($str_value); $i++) {
+ $have['clip'] = false;
+ $have['pos'] = false;
+ $have['color'] = false;
+ $have['bg'] = false;
+
+ if (is_array($str_value[$i])) {
+ $str_value[$i] = $str_value[$i][0];
+ }
+ $str_value[$i] = csstidy_optimise::explode_ws(' ', trim($str_value[$i]));
+
+ for ($j = 0; $j < count($str_value[$i]); $j++) {
+ if ($have['bg'] === false && (substr($str_value[$i][$j], 0, 4) === 'url(' || $str_value[$i][$j] === 'none')) {
+ $return['background-image'] .= $str_value[$i][$j] . ',';
+ $have['bg'] = true;
+ } elseif (in_array($str_value[$i][$j], $repeat, true)) {
+ $return['background-repeat'] .= $str_value[$i][$j] . ',';
+ } elseif (in_array($str_value[$i][$j], $attachment, true)) {
+ $return['background-attachment'] .= $str_value[$i][$j] . ',';
+ } elseif (in_array($str_value[$i][$j], $clip, true) && !$have['clip']) {
+ $return['background-clip'] .= $str_value[$i][$j] . ',';
+ $have['clip'] = true;
+ } elseif (in_array($str_value[$i][$j], $origin, true)) {
+ $return['background-origin'] .= $str_value[$i][$j] . ',';
+ } elseif ($str_value[$i][$j]{0} === '(') {
+ $return['background-size'] .= substr($str_value[$i][$j], 1, -1) . ',';
+ } elseif (in_array($str_value[$i][$j], $pos, true) || is_numeric($str_value[$i][$j]{0}) || $str_value[$i][$j]{0} === null || $str_value[$i][$j]{0} === '-' || $str_value[$i][$j]{0} === '.') {
+ $return['background-position'] .= $str_value[$i][$j];
+ if (!$have['pos'])
+ $return['background-position'] .= ' '; else
+ $return['background-position'].= ',';
+ $have['pos'] = true;
+ }
+ elseif (!$have['color']) {
+ $return['background-color'] .= $str_value[$i][$j] . ',';
+ $have['color'] = true;
+ }
+ }
+ }
+
+ foreach ($background_prop_default as $bg_prop => $default_value) {
+ if ($return[$bg_prop] !== null) {
+ $return[$bg_prop] = substr($return[$bg_prop], 0, -1) . $important;
+ }
+ else
+ $return[$bg_prop] = $default_value . $important;
+ }
+ return $return;
+ }
+
+ /**
+ * Merges all background properties
+ * @param array $input_css
+ * @return array
+ * @version 1.0
+ * @see dissolve_short_bg()
+ * @todo full CSS 3 compliance
+ */
+ function merge_bg($input_css) {
+ $background_prop_default = & $GLOBALS['csstidy']['background_prop_default'];
+ // Max number of background images. CSS3 not yet fully implemented
+ $number_of_values = @max(count(csstidy_optimise::explode_ws(',', $input_css['background-image'])), count(csstidy_optimise::explode_ws(',', $input_css['background-color'])), 1);
+ // Array with background images to check if BG image exists
+ $bg_img_array = @csstidy_optimise::explode_ws(',', csstidy::gvw_important($input_css['background-image']));
+ $new_bg_value = '';
+ $important = '';
+
+ // if background properties is here and not empty, don't try anything
+ if (isset($input_css['background']) AND $input_css['background'])
+ return $input_css;
+
+ for ($i = 0; $i < $number_of_values; $i++) {
+ foreach ($background_prop_default as $bg_property => $default_value) {
+ // Skip if property does not exist
+ if (!isset($input_css[$bg_property])) {
+ continue;
+ }
+
+ $cur_value = $input_css[$bg_property];
+ // skip all optimisation if gradient() somewhere
+ if (stripos($cur_value, "gradient(")!==FALSE)
+ return $input_css;
+
+ // Skip some properties if there is no background image
+ if ((!isset($bg_img_array[$i]) || $bg_img_array[$i] === 'none')
+ && ($bg_property === 'background-size' || $bg_property === 'background-position'
+ || $bg_property === 'background-attachment' || $bg_property === 'background-repeat')) {
+ continue;
+ }
+
+ // Remove !important
+ if (csstidy::is_important($cur_value)) {
+ $important = ' !important';
+ $cur_value = csstidy::gvw_important($cur_value);
+ }
+
+ // Do not add default values
+ if ($cur_value === $default_value) {
+ continue;
+ }
+
+ $temp = csstidy_optimise::explode_ws(',', $cur_value);
+
+ if (isset($temp[$i])) {
+ if ($bg_property === 'background-size') {
+ $new_bg_value .= '(' . $temp[$i] . ') ';
+ } else {
+ $new_bg_value .= $temp[$i] . ' ';
+ }
+ }
+ }
+
+ $new_bg_value = trim($new_bg_value);
+ if ($i != $number_of_values - 1)
+ $new_bg_value .= ',';
+ }
+
+ // Delete all background-properties
+ foreach ($background_prop_default as $bg_property => $default_value) {
+ unset($input_css[$bg_property]);
+ }
+
+ // Add new background property
+ if ($new_bg_value !== '')
+ $input_css['background'] = $new_bg_value . $important;
+ elseif(isset ($input_css['background']))
+ $input_css['background'] = 'none';
+
+ return $input_css;
+ }
+
+ /**
+ * Dissolve font property
+ * @param string $str_value
+ * @return array
+ * @version 1.3
+ * @see merge_font()
+ */
+ function dissolve_short_font($str_value) {
+ $font_prop_default = & $GLOBALS['csstidy']['font_prop_default'];
+ $font_weight = array('normal', 'bold', 'bolder', 'lighter', 100, 200, 300, 400, 500, 600, 700, 800, 900);
+ $font_variant = array('normal', 'small-caps');
+ $font_style = array('normal', 'italic', 'oblique');
+ $important = '';
+ $return = array('font-style' => null, 'font-variant' => null, 'font-weight' => null, 'font-size' => null, 'line-height' => null, 'font-family' => null);
+
+ if (csstidy::is_important($str_value)) {
+ $important = '!important';
+ $str_value = csstidy::gvw_important($str_value);
+ }
+
+ $have['style'] = false;
+ $have['variant'] = false;
+ $have['weight'] = false;
+ $have['size'] = false;
+ // Detects if font-family consists of several words w/o quotes
+ $multiwords = false;
+
+ // Workaround with multiple font-family
+ $str_value = csstidy_optimise::explode_ws(',', trim($str_value));
+
+ $str_value[0] = csstidy_optimise::explode_ws(' ', trim($str_value[0]));
+
+ for ($j = 0; $j < count($str_value[0]); $j++) {
+ if ($have['weight'] === false && in_array($str_value[0][$j], $font_weight)) {
+ $return['font-weight'] = $str_value[0][$j];
+ $have['weight'] = true;
+ } elseif ($have['variant'] === false && in_array($str_value[0][$j], $font_variant)) {
+ $return['font-variant'] = $str_value[0][$j];
+ $have['variant'] = true;
+ } elseif ($have['style'] === false && in_array($str_value[0][$j], $font_style)) {
+ $return['font-style'] = $str_value[0][$j];
+ $have['style'] = true;
+ } elseif ($have['size'] === false && (is_numeric($str_value[0][$j]{0}) || $str_value[0][$j]{0} === null || $str_value[0][$j]{0} === '.')) {
+ $size = csstidy_optimise::explode_ws('/', trim($str_value[0][$j]));
+ $return['font-size'] = $size[0];
+ if (isset($size[1])) {
+ $return['line-height'] = $size[1];
+ } else {
+ $return['line-height'] = ''; // don't add 'normal' !
+ }
+ $have['size'] = true;
+ } else {
+ if (isset($return['font-family'])) {
+ $return['font-family'] .= ' ' . $str_value[0][$j];
+ $multiwords = true;
+ } else {
+ $return['font-family'] = $str_value[0][$j];
+ }
+ }
+ }
+ // add quotes if we have several qords in font-family
+ if ($multiwords !== false) {
+ $return['font-family'] = '"' . $return['font-family'] . '"';
+ }
+ $i = 1;
+ while (isset($str_value[$i])) {
+ $return['font-family'] .= ',' . trim($str_value[$i]);
+ $i++;
+ }
+
+ // Fix for 100 and more font-size
+ if ($have['size'] === false && isset($return['font-weight']) &&
+ is_numeric($return['font-weight']{0})) {
+ $return['font-size'] = $return['font-weight'];
+ unset($return['font-weight']);
+ }
+
+ foreach ($font_prop_default as $font_prop => $default_value) {
+ if ($return[$font_prop] !== null) {
+ $return[$font_prop] = $return[$font_prop] . $important;
+ }
+ else
+ $return[$font_prop] = $default_value . $important;
+ }
+ return $return;
+ }
+
+ /**
+ * Merges all fonts properties
+ * @param array $input_css
+ * @return array
+ * @version 1.3
+ * @see dissolve_short_font()
+ */
+ function merge_font($input_css) {
+ $font_prop_default = & $GLOBALS['csstidy']['font_prop_default'];
+ $new_font_value = '';
+ $important = '';
+ // Skip if not font-family and font-size set
+ if (isset($input_css['font-family']) && isset($input_css['font-size'])) {
+ // fix several words in font-family - add quotes
+ if (isset($input_css['font-family'])) {
+ $families = explode(",", $input_css['font-family']);
+ $result_families = array();
+ foreach ($families as $family) {
+ $family = trim($family);
+ $len = strlen($family);
+ if (strpos($family, " ") &&
+ !(($family{0} == '"' && $family{$len - 1} == '"') ||
+ ($family{0} == "'" && $family{$len - 1} == "'"))) {
+ $family = '"' . $family . '"';
+ }
+ $result_families[] = $family;
+ }
+ $input_css['font-family'] = implode(",", $result_families);
+ }
+ foreach ($font_prop_default as $font_property => $default_value) {
+
+ // Skip if property does not exist
+ if (!isset($input_css[$font_property])) {
+ continue;
+ }
+
+ $cur_value = $input_css[$font_property];
+
+ // Skip if default value is used
+ if ($cur_value === $default_value) {
+ continue;
+ }
+
+ // Remove !important
+ if (csstidy::is_important($cur_value)) {
+ $important = '!important';
+ $cur_value = csstidy::gvw_important($cur_value);
+ }
+
+ $new_font_value .= $cur_value;
+ // Add delimiter
+ $new_font_value .= ( $font_property === 'font-size' &&
+ isset($input_css['line-height'])) ? '/' : ' ';
+ }
+
+ $new_font_value = trim($new_font_value);
+
+ // Delete all font-properties
+ foreach ($font_prop_default as $font_property => $default_value) {
+ if ($font_property!=='font' OR !$new_font_value)
+ unset($input_css[$font_property]);
+ }
+
+ // Add new font property
+ if ($new_font_value !== '') {
+ $input_css['font'] = $new_font_value . $important;
+ }
+ }
+
+ return $input_css;
+ }
+
+}
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