<?php // phpcs:ignore WordPress.Files.FileName.InvalidClassFileName
/**
* 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 <https://www.gnu.org/licenses/>.
*
* @license https://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
*/
/**
* 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 { // phpcs:ignore
/**
* Constructor
*
* @param array $css contains the class csstidy.
* @access private
* @version 1.0
*/
public function __construct( &$css ) {
$this->parser = & $css;
$this->css = & $css->css;
$this->sub_value = & $css->sub_value;
$this->at = & $css->at;
$this->selector = & $css->selector;
$this->property = & $css->property;
$this->value = & $css->value;
}
/**
* Call constructor function.
*
* @param object $css - the CSS.
*/
public function csstidy_optimise( &$css ) {
$this->__construct( $css );
}
/**
* Optimises $css after parsing
*
* @access public
* @version 1.0
*/
public 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 ] = self::merge_4value_shorthands( $this->css[ $medium ][ $selector ] );
if ( $this->parser->get_cfg( 'optimise_shorthands' ) < 2 ) {
continue;
}
$this->css[ $medium ][ $selector ] = self::merge_font( $this->css[ $medium ][ $selector ] );
if ( $this->parser->get_cfg( 'optimise_shorthands' ) < 3 ) {
continue;
}
$this->css[ $medium ][ $selector ] = self::merge_bg( $this->css[ $medium ][ $selector ] );
if ( empty( $this->css[ $medium ][ $selector ] ) ) {
unset( $this->css[ $medium ][ $selector ] );
}
}
}
}
}
/**
* Optimises values
*
* @access public
* @version 1.0
*/
public function value() {
$shorthands = & $GLOBALS['csstidy']['shorthands'];
// optimise shorthand properties.
if ( isset( $shorthands[ $this->property ] ) ) {
$temp = self::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
*/
public 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, self::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, self::dissolve_short_bg( $this->value ) );
}
if ( isset( $shorthands[ $this->property ] ) ) {
$this->parser->merge_css_blocks( $this->at, $this->selector, self::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
*/
public function subvalue() {
$replace_colors = & $GLOBALS['csstidy']['replace_colors'];
$this->sub_value = trim( $this->sub_value );
if ( $this->sub_value === '' ) {
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' );
} elseif ( $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 - the value.
* @access public
* @return string
* @version 1.0
*/
public static 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 $string - the string.
* @return string
* @access public
* @version 1.1
*/
public function compress_important( &$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 - the color.
* @return string
* @version 1.1
*/
public function cut_color( $color ) {
$replace_colors = & $GLOBALS['csstidy']['replace_colors'];
// an example: rgb(0,0,0) -> #000000 (or #000 in this case later).
if ( strtolower( substr( $color, 0, 4 ) ) === 'rgb(' ) {
$color_tmp = substr( $color, 4, strlen( $color ) - 5 );
$color_tmp = explode( ',', $color_tmp );
for ( $i = 0, $l = count( $color_tmp ); $i < $l; $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 - the subvalue.
* @return string
* @version 1.2
*/
public 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, $m = count( $temp ); $l < $m; $l++ ) {
// if we are not dealing with a number at this point, do not optimise anything.
$number = $this->analyse_css_number( $temp[ $l ] );
if ( $number === false ) {
return $subvalue;
}
// Fix bad colors.
if ( in_array( $this->property, $color_values, true ) ) {
if ( strlen( $temp[ $l ] ) === 3 || strlen( $temp[ $l ] ) === 6 ) {
$temp[ $l ] = '#' . $temp[ $l ];
} else {
$temp[ $l ] = '0';
}
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 - the string we're checking.
* @return array ('unit' if unit is found or '' if no unit exists, number value) or false if no number
*/
public function analyse_css_number( $string ) {
// most simple checks first
if ( $string === '' || ctype_alpha( $string[0] ) ) {
return false;
}
$units = & $GLOBALS['csstidy']['units'];
$return = array( 0, '' );
$return[0] = (float) $string;
if ( abs( $return[0] ) > 0 && abs( $return[0] ) < 1 ) {
// Removes the initial `0` from a decimal number, e.g., `0.7 => .7` or `-0.666 => -.666`.
if ( ! $this->parser->get_cfg( 'preserve_leading_zeros' ) ) {
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 ) {
$expect_unit_at = strlen( $string ) - strlen( $unit );
$unit_in_string = stristr( $string, $unit );
if ( ! $unit_in_string ) { // mb_strpos() fails with "false"
continue;
}
$actual_position = strpos( $string, $unit_in_string );
if ( $expect_unit_at === $actual_position ) {
$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 $array - the selector array.
* @access public
* @version 1.2
*/
public function merge_selectors( &$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
*
* @param array $array - selector array.
*/
public function discard_invalid_selectors( &$array ) {
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 - the property.
* @param string $value - the value.
* @return array
* @version 1.0
* @see merge_4value_shorthands()
*/
public static function dissolve_4value_shorthands( $property, $value ) {
$shorthands = & $GLOBALS['csstidy']['shorthands'];
if ( ! is_array( $shorthands[ $property ] ) ) {
$return = array();
$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 - the string.
* @return array
* @version 1.0
*/
public static 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 - the property array.
* @return array
* @version 1.2
* @see dissolve_4value_shorthands()
*/
public static 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 ] = self::shorthand( trim( $return[ $key ] . $important ) );
}
}
return $return;
}
/**
* Dissolve background property
*
* @param string $str_value - the string value.
* @return array
* @version 1.0
* @see merge_bg()
* @todo full CSS 3 compliance
*/
public static function dissolve_short_bg( $str_value ) {
$have = array();
// 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 = self::explode_ws( ',', $str_value );
for ( $i = 0, $l = count( $str_value ); $i < $l; $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 ] = self::explode_ws( ' ', trim( $str_value[ $i ] ) );
for ( $j = 0, $k = count( $str_value[ $i ] ); $j < $k; $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 - inputted CSS.
* @return array
* @version 1.0
* @see dissolve_short_bg()
* @todo full CSS 3 compliance
*/
public static 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( self::explode_ws( ',', $input_css['background-image'] ) ), count( self::explode_ws( ',', $input_css['background-color'] ) ), 1 ); // phpcs:ignore WordPress.PHP.NoSilencedErrors.Discouraged
// Array with background images to check if BG image exists.
$bg_img_array = @self::explode_ws( ',', csstidy::gvw_important( $input_css['background-image'] ) ); // phpcs:ignore WordPress.PHP.NoSilencedErrors.Discouraged
$new_bg_value = '';
$important = '';
// if background properties is here and not empty, don't try anything.
if ( isset( $input_css['background'] ) && $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 = self::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 - the string value.
* @return array
* @version 1.3
* @see merge_font()
*/
public static function dissolve_short_font( $str_value ) {
$have = array();
$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 = self::explode_ws( ',', trim( $str_value ) );
$str_value[0] = self::explode_ws( ' ', trim( $str_value[0] ) );
for ( $j = 0, $k = count( $str_value[0] ); $j < $k; $j++ ) {
if ( $have['weight'] === false && in_array( $str_value[0][ $j ], $font_weight, true ) ) {
$return['font-weight'] = $str_value[0][ $j ];
$have['weight'] = true;
} elseif ( $have['variant'] === false && in_array( $str_value[0][ $j ], $font_variant, true ) ) {
$return['font-variant'] = $str_value[0][ $j ];
$have['variant'] = true;
} elseif ( $have['style'] === false && in_array( $str_value[0][ $j ], $font_style, true ) ) {
$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 = self::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 - input CSS.
* @return array
* @version 1.3
* @see dissolve_short_font()
*/
public static 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' || ! $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;
}
}