Файловый менеджер - Редактировать - /var/www/html/mediawiki-1.43.1/vendor/cssjanus/cssjanus/src/CSSJanus.php
Ðазад
<?php /** * PHP port of CSSJanus. https://www.mediawiki.org/wiki/CSSJanus * * Copyright 2020 Timo Tijhof * Copyright 2014 Trevor Parscal * Copyright 2010 Roan Kattouw * Copyright 2008 Google Inc. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * * @file */ /** * CSSJanus is a utility that converts CSS stylesheets * from left-to-right (LTR) to right-to-left (RTL). */ class CSSJanus { private const TOKEN_TMP = '`TMP`'; private const TOKEN_LTR_TMP = '`TMPLTR`'; private const TOKEN_RTL_TMP = '`TMPRTL`'; private const TOKEN_COMMENT = '`COMMENT`'; private static $patterns = null; private static function buildPatterns() { if ( self::$patterns !== null ) { return; } // Patterns defined as null are built dynamically $patterns = [ 'nonAscii' => '[\200-\377]', 'unicode' => '(?:(?:\\\\[0-9a-f]{1,6})(?:\r\n|\s)?)', 'num' => '(?:[0-9]*\.[0-9]+|[0-9]+)', 'unit' => '(?:em|ex|px|cm|mm|in|pt|pc|deg|rad|grad|ms|s|hz|khz|%)', 'body_selector' => 'body\s*{\s*', 'direction' => 'direction\s*:\s*', 'escape' => null, 'nmstart' => null, 'nmchar' => null, 'ident' => null, 'quantity' => null, 'possibly_negative_quantity' => null, 'color' => null, 'url_special_chars' => '[!#$%&*-~]', 'valid_after_uri_chars' => '[\'\"]?\s*', 'url_chars' => null, 'lookahead_not_open_brace' => null, 'lookahead_not_closing_paren' => null, 'lookahead_for_closing_paren' => null, 'lookahead_not_letter' => '(?![a-zA-Z])', 'lookbehind_not_letter' => '(?<![a-zA-Z])', 'chars_within_selector' => '[^\}]*?', 'noflip_annotation' => '\/\*\!?\s*@noflip\s*\*\/', 'noflip_single' => null, 'noflip_class' => null, 'comment' => '/\/\*[^*]*\*+([^\/*][^*]*\*+)*\//', 'direction_ltr' => null, 'direction_rtl' => null, 'left' => null, 'right' => null, 'left_in_url' => null, 'right_in_url' => null, 'ltr_dir_selector' => '/(:dir\( *)ltr( *\))/', 'rtl_dir_selector' => '/(:dir\( *)rtl( *\))/', 'ltr_in_url' => null, 'rtl_in_url' => null, 'cursor_east' => null, 'cursor_west' => null, 'four_notation_quantity' => null, 'four_notation_color' => null, 'border_radius' => null, 'box_shadow' => null, 'text_shadow1' => null, 'text_shadow2' => null, 'bg_horizontal_percentage' => null, 'bg_horizontal_percentage_x' => null, 'suffix' => '(\s*(?:!important\s*)?[;}])' ]; // @codingStandardsIgnoreStart Generic.Files.LineLength.TooLong $patterns['escape'] = "(?:{$patterns['unicode']}|\\\\[^\\r\\n\\f0-9a-f])"; $patterns['nmstart'] = "(?:[_a-z]|{$patterns['nonAscii']}|{$patterns['escape']})"; $patterns['nmchar'] = "(?:[_a-z0-9-]|{$patterns['nonAscii']}|{$patterns['escape']})"; $patterns['ident'] = "-?{$patterns['nmstart']}{$patterns['nmchar']}*"; $patterns['quantity'] = "{$patterns['num']}(?:\s*{$patterns['unit']}|{$patterns['ident']})?"; $patterns['possibly_negative_quantity'] = "((?:-?{$patterns['quantity']})|(?:inherit|auto))"; $patterns['possibly_negative_simple_quantity'] = "(?:-?{$patterns['num']}(?:\s*{$patterns['unit']})?)"; $patterns['math_operator'] = '(?:\+|\-|\*|\/)'; $patterns['allowed_chars'] = '(?:\(|\)|\t| )'; $patterns['calc_equation'] = "(?:{$patterns['allowed_chars']}|{$patterns['possibly_negative_simple_quantity']}|{$patterns['math_operator']}){3,}"; $patterns['calc'] = "(?:calc\((?:{$patterns['calc_equation']})\))"; $patterns['possibly_negative_quantity_calc'] = "((?:-?{$patterns['quantity']})|(?:inherit|auto)|{$patterns['calc']})"; $patterns['color'] = "(#?{$patterns['nmchar']}+|(?:rgba?|hsla?)\([ \d.,%-]+\))"; // Use "*+" instead of "*?" to avoid reaching the backtracking limit. // <https://phabricator.wikimedia.org/T326481>, <https://phabricator.wikimedia.org/T215746#4944830>. $patterns['url_chars'] = "(?:{$patterns['url_special_chars']}|{$patterns['nonAscii']}|{$patterns['escape']})*+"; $patterns['lookahead_not_open_brace'] = "(?!({$patterns['nmchar']}|\\r?\\n|\s|#|\:|\.|\,|\+|>|~|\(|\)|\[|\]|=|\*=|~=|\^=|'[^']*'|\"[^\"]*\"|" . self::TOKEN_COMMENT . ")*+{)"; $patterns['lookahead_not_closing_paren'] = "(?!{$patterns['url_chars']}{$patterns['valid_after_uri_chars']}\))"; $patterns['lookahead_for_closing_paren'] = "(?={$patterns['url_chars']}{$patterns['valid_after_uri_chars']}\))"; $patterns['noflip_single'] = "/({$patterns['noflip_annotation']}{$patterns['lookahead_not_open_brace']}[^;}]+;?)/i"; $patterns['noflip_class'] = "/({$patterns['noflip_annotation']}{$patterns['chars_within_selector']}})/i"; $patterns['direction_ltr'] = "/({$patterns['direction']})ltr/i"; $patterns['direction_rtl'] = "/({$patterns['direction']})rtl/i"; $patterns['left'] = "/{$patterns['lookbehind_not_letter']}(left){$patterns['lookahead_not_letter']}{$patterns['lookahead_not_closing_paren']}{$patterns['lookahead_not_open_brace']}/i"; $patterns['right'] = "/{$patterns['lookbehind_not_letter']}(right){$patterns['lookahead_not_letter']}{$patterns['lookahead_not_closing_paren']}{$patterns['lookahead_not_open_brace']}/i"; $patterns['left_in_url'] = "/{$patterns['lookbehind_not_letter']}(left){$patterns['lookahead_for_closing_paren']}/i"; $patterns['right_in_url'] = "/{$patterns['lookbehind_not_letter']}(right){$patterns['lookahead_for_closing_paren']}/i"; $patterns['ltr_in_url'] = "/{$patterns['lookbehind_not_letter']}(ltr){$patterns['lookahead_for_closing_paren']}/i"; $patterns['rtl_in_url'] = "/{$patterns['lookbehind_not_letter']}(rtl){$patterns['lookahead_for_closing_paren']}/i"; $patterns['cursor_east'] = "/{$patterns['lookbehind_not_letter']}([ns]?)e-resize/"; $patterns['cursor_west'] = "/{$patterns['lookbehind_not_letter']}([ns]?)w-resize/"; $patterns['four_notation_quantity_props'] = "((?:margin|padding|border-width)\s*:\s*)"; $patterns['four_notation_quantity'] = "/{$patterns['four_notation_quantity_props']}{$patterns['possibly_negative_quantity_calc']}(\s+){$patterns['possibly_negative_quantity_calc']}(\s+){$patterns['possibly_negative_quantity_calc']}(\s+){$patterns['possibly_negative_quantity_calc']}{$patterns['suffix']}/i"; $patterns['four_notation_color'] = "/((?:-color|border-style)\s*:\s*){$patterns['color']}(\s+){$patterns['color']}(\s+){$patterns['color']}(\s+){$patterns['color']}{$patterns['suffix']}/i"; // border-radius: <length or percentage>{1,4} [optional: / <length or percentage>{1,4} ] $patterns['border_radius'] = '/(border-radius\s*:\s*)' . $patterns['possibly_negative_quantity'] . '(?:(?:\s+' . $patterns['possibly_negative_quantity'] . ')(?:\s+' . $patterns['possibly_negative_quantity'] . ')?(?:\s+' . $patterns['possibly_negative_quantity'] . ')?)?' . '(?:(?:(?:\s*\/\s*)' . $patterns['possibly_negative_quantity'] . ')(?:\s+' . $patterns['possibly_negative_quantity'] . ')?(?:\s+' . $patterns['possibly_negative_quantity'] . ')?(?:\s+' . $patterns['possibly_negative_quantity'] . ')?)?' . $patterns['suffix'] . '/i'; $patterns['box_shadow'] = "/(box-shadow\s*:\s*(?:inset\s*)?){$patterns['possibly_negative_quantity']}/i"; $patterns['text_shadow1'] = "/(text-shadow\s*:\s*){$patterns['possibly_negative_quantity']}(\s*){$patterns['color']}/i"; $patterns['text_shadow2'] = "/(text-shadow\s*:\s*){$patterns['color']}(\s*){$patterns['possibly_negative_quantity']}/i"; $patterns['text_shadow3'] = "/(text-shadow\s*:\s*){$patterns['possibly_negative_quantity']}/i"; $patterns['bg_horizontal_percentage'] = "/(background(?:-position)?\s*:\s*(?:[^:;}\s]+\s+)*?)({$patterns['quantity']})/i"; $patterns['bg_horizontal_percentage_x'] = "/(background-position-x\s*:\s*)(-?{$patterns['num']}%)/i"; $patterns['translate_x'] = "/(transform\s*:[^;}]*)(translateX\s*\(\s*){$patterns['possibly_negative_quantity']}(\s*\))/i"; $patterns['translate'] = "/(transform\s*:[^;}]*)(translate\s*\(\s*){$patterns['possibly_negative_quantity']}((?:\s*,\s*{$patterns['possibly_negative_quantity']}){0,2}\s*\))/i"; // @codingStandardsIgnoreEnd self::$patterns = $patterns; } /** * Transform an LTR stylesheet to RTL * * @param string $css Stylesheet to transform * @param bool|array{transformDirInUrl?:bool,transformEdgeInUrl?:bool} $options Options array, * or value of transformDirInUrl option (back-compat) * - transformDirInUrl: Transform directions in URLs (ltr/rtl). Default: false. * - transformEdgeInUrl: Transform edges in URLs (left/right). Default: false. * @param bool $transformEdgeInUrl [optional] For back-compat * @return string Transformed stylesheet */ public static function transform( $css, $options = [], $transformEdgeInUrl = false ) { if ( !is_array( $options ) ) { $options = [ 'transformDirInUrl' => (bool)$options, 'transformEdgeInUrl' => (bool)$transformEdgeInUrl, ]; } // Defaults $options += [ 'transformDirInUrl' => false, 'transformEdgeInUrl' => false, ]; self::buildPatterns(); // We wrap tokens in ` , not ~ like the original implementation does. // This was done because ` is not a legal character in CSS and can only // occur in URLs, where we escape it to %60 before inserting our tokens. $css = str_replace( '`', '%60', $css ); // Tokenize single line rules with /* @noflip */ $noFlipSingle = new CSSJanusTokenizer( self::$patterns['noflip_single'], '`NOFLIP_SINGLE`' ); $css = $noFlipSingle->tokenize( $css ); // Tokenize class rules with /* @noflip */ $noFlipClass = new CSSJanusTokenizer( self::$patterns['noflip_class'], '`NOFLIP_CLASS`' ); $css = $noFlipClass->tokenize( $css ); // Tokenize comments $comments = new CSSJanusTokenizer( self::$patterns['comment'], self::TOKEN_COMMENT ); $css = $comments->tokenize( $css ); // LTR->RTL fixes start here $css = self::fixDirection( $css ); if ( $options['transformDirInUrl'] ) { $css = self::fixLtrRtlInURL( $css ); } if ( $options['transformEdgeInUrl'] ) { $css = self::fixLeftRightInURL( $css ); } $css = self::fixLeftAndRight( $css ); $css = self::fixCursorProperties( $css ); $css = self::fixFourPartNotation( $css ); $css = self::fixBorderRadius( $css ); $css = self::fixBackgroundPosition( $css ); $css = self::fixShadows( $css ); $css = self::fixTranslate( $css ); // Detokenize stuff we tokenized before $css = $comments->detokenize( $css ); $css = $noFlipClass->detokenize( $css ); $css = $noFlipSingle->detokenize( $css ); return $css; } /** * Replace direction: ltr; with direction: rtl; and vice versa. * * The original implementation only does this inside body selectors * and misses "body\n{\ndirection:ltr;\n}". This function does not have * these problems. * * See https://code.google.com/p/cssjanus/issues/detail?id=15 * * @param string $css * @return string */ private static function fixDirection( $css ) { $css = preg_replace( self::$patterns['direction_ltr'], '$1' . self::TOKEN_TMP, $css ); $css = preg_replace( self::$patterns['direction_rtl'], '$1ltr', $css ); $css = str_replace( self::TOKEN_TMP, 'rtl', $css ); return $css; } /** * Replace 'ltr' with 'rtl' and vice versa in background URLs * @param string $css * @return string */ private static function fixLtrRtlInURL( $css ) { $css = preg_replace( self::$patterns['ltr_dir_selector'], '$1' . self::TOKEN_LTR_TMP . '$2', $css ); $css = preg_replace( self::$patterns['rtl_dir_selector'], '$1' . self::TOKEN_RTL_TMP . '$2', $css ); $css = preg_replace( self::$patterns['ltr_in_url'], self::TOKEN_TMP, $css ); $css = preg_replace( self::$patterns['rtl_in_url'], 'ltr', $css ); $css = str_replace( self::TOKEN_TMP, 'rtl', $css ); $css = str_replace( self::TOKEN_LTR_TMP, 'ltr', $css ); $css = str_replace( self::TOKEN_RTL_TMP, 'rtl', $css ); return $css; } /** * Replace 'left' with 'right' and vice versa in background URLs * @param string $css * @return string */ private static function fixLeftRightInURL( $css ) { $css = preg_replace( self::$patterns['left_in_url'], self::TOKEN_TMP, $css ); $css = preg_replace( self::$patterns['right_in_url'], 'left', $css ); $css = str_replace( self::TOKEN_TMP, 'right', $css ); return $css; } /** * Flip rules like left: , padding-right: , etc. * @param string $css * @return string */ private static function fixLeftAndRight( $css ) { $css = preg_replace( self::$patterns['left'], self::TOKEN_TMP, $css ); $css = preg_replace( self::$patterns['right'], 'left', $css ); $css = str_replace( self::TOKEN_TMP, 'right', $css ); return $css; } /** * Flip East and West in rules like cursor: nw-resize; * @param string $css * @return string */ private static function fixCursorProperties( $css ) { $css = preg_replace( self::$patterns['cursor_east'], '$1' . self::TOKEN_TMP, $css ); $css = preg_replace( self::$patterns['cursor_west'], '$1e-resize', $css ); $css = str_replace( self::TOKEN_TMP, 'w-resize', $css ); return $css; } /** * Swap the second and fourth parts in four-part notation rules like * padding: 1px 2px 3px 4px; * * Unlike the original implementation, this function doesn't suffer from * the bug where whitespace is not preserved when flipping four-part rules * and four-part color rules with multiple whitespace characters between * colors are not recognized. * See https://code.google.com/p/cssjanus/issues/detail?id=16 * @param string $css * @return string */ private static function fixFourPartNotation( $css ) { $css = preg_replace( self::$patterns['four_notation_quantity'], '$1$2$3$8$5$6$7$4$9', $css ); $css = preg_replace( self::$patterns['four_notation_color'], '$1$2$3$8$5$6$7$4$9', $css ); return $css; } /** * Swaps appropriate corners in border-radius values. * * @param string $css * @return string */ private static function fixBorderRadius( $css ) { return preg_replace_callback( self::$patterns['border_radius'], [ self::class, 'calculateBorderRadius' ], $css ); } /** * Callback for fixBorderRadius() * @param array $matches * @return string */ private static function calculateBorderRadius( $matches ) { $pre = $matches[1]; $firstGroup = array_filter( array_slice( $matches, 2, 4 ), 'strlen' ); $secondGroup = array_filter( array_slice( $matches, 6, 4 ), 'strlen' ); $post = $matches[10] ?: ''; if ( $secondGroup ) { $values = self::flipBorderRadiusValues( $firstGroup ) . ' / ' . self::flipBorderRadiusValues( $secondGroup ); } else { $values = self::flipBorderRadiusValues( $firstGroup ); } return $pre . $values . $post; } /** * Callback for fixBorderRadius() * @param array $values Matched values * @return string Flipped values */ private static function flipBorderRadiusValues( $values ) { switch ( count( $values ) ) { case 4: $values = [ $values[1], $values[0], $values[3], $values[2] ]; break; case 3: $values = [ $values[1], $values[0], $values[1], $values[2] ]; break; case 2: $values = [ $values[1], $values[0] ]; break; case 1: $values = [ $values[0] ]; break; } return implode( ' ', $values ); } /** * Flips the sign of a CSS value, possibly with a unit. * * We can't just negate the value with unary minus due to the units. * * @param string $cssValue * @return string */ private static function flipSign( $cssValue ) { // Don't mangle zeroes if ( floatval( $cssValue ) === 0.0 ) { return $cssValue; } elseif ( $cssValue[0] === '-' ) { return substr( $cssValue, 1 ); } else { return "-" . $cssValue; } } /** * Negates horizontal offset in box-shadow and text-shadow rules. * * @param string $css * @return string */ private static function fixShadows( $css ) { $css = preg_replace_callback( self::$patterns['box_shadow'], function ( $matches ) { return $matches[1] . self::flipSign( $matches[2] ); }, $css ); $css = preg_replace_callback( self::$patterns['text_shadow1'], function ( $matches ) { return $matches[1] . $matches[2] . $matches[3] . self::flipSign( $matches[4] ); }, $css ); $css = preg_replace_callback( self::$patterns['text_shadow2'], function ( $matches ) { return $matches[1] . $matches[2] . $matches[3] . self::flipSign( $matches[4] ); }, $css ); $css = preg_replace_callback( self::$patterns['text_shadow3'], function ( $matches ) { return $matches[1] . self::flipSign( $matches[2] ); }, $css ); return $css; } /** * Negates horizontal offset in tranform: translate() * * @param string $css * @return string */ private static function fixTranslate( $css ) { $css = preg_replace_callback( self::$patterns['translate'], function ( $matches ) { return $matches[1] . $matches[2] . self::flipSign( $matches[3] ) . $matches[4]; }, $css ); $css = preg_replace_callback( self::$patterns['translate_x'], function ( $matches ) { return $matches[1] . $matches[2] . self::flipSign( $matches[3] ) . $matches[4]; }, $css ); return $css; } /** * Flip horizontal background percentages. * @param string $css * @return string */ private static function fixBackgroundPosition( $css ) { $replaced = preg_replace_callback( self::$patterns['bg_horizontal_percentage'], [ self::class, 'calculateNewBackgroundPosition' ], $css ); if ( $replaced !== null ) { // preg_replace_callback() sometimes returns null $css = $replaced; } $replaced = preg_replace_callback( self::$patterns['bg_horizontal_percentage_x'], [ self::class, 'calculateNewBackgroundPosition' ], $css ); if ( $replaced !== null ) { $css = $replaced; } return $css; } /** * Callback for fixBackgroundPosition() * @param array $matches * @return string */ private static function calculateNewBackgroundPosition( $matches ) { $value = $matches[2]; if ( substr( $value, -1 ) === '%' ) { $idx = strpos( $value, '.' ); if ( $idx !== false ) { $len = strlen( $value ) - $idx - 2; $value = number_format( 100 - (float)$value, $len ) . '%'; } else { $value = ( 100 - (float)$value ) . '%'; } } return $matches[1] . $value; } } /** * Utility class used by CSSJanus that tokenizes and untokenizes things we want * to protect from being janused. */ class CSSJanusTokenizer { private $regex; private $token; private $originals; /** * Constructor * @param string $regex Regular expression whose matches to replace by a token. * @param string $token Token */ public function __construct( $regex, $token ) { $this->regex = $regex; $this->token = $token; $this->originals = []; } /** * Replace all occurrences of $regex in $str with a token and remember * the original strings. * @param string $str to tokenize * @return string Tokenized string */ public function tokenize( $str ) { return preg_replace_callback( $this->regex, [ $this, 'tokenizeCallback' ], $str ); } /** * @param array $matches * @return string */ private function tokenizeCallback( $matches ) { $this->originals[] = $matches[0]; return $this->token; } /** * Replace tokens with their originals. If multiple strings were tokenized, it's important they be * detokenized in exactly the SAME ORDER. * @param string $str previously run through tokenize() * @return string Original string */ public function detokenize( $str ) { // PHP has no function to replace only the first occurrence or to // replace occurrences of the same string with different values, // so we use preg_replace_callback() even though we don't really need a regex return preg_replace_callback( '/' . preg_quote( $this->token, '/' ) . '/', [ $this, 'detokenizeCallback' ], $str ); } /** * @param array $matches * @return mixed */ private function detokenizeCallback( $matches ) { $retval = current( $this->originals ); next( $this->originals ); return $retval; } }
| ver. 1.1 | |
.
| PHP 8.4.18 | Ð“ÐµÐ½ÐµÑ€Ð°Ñ†Ð¸Ñ Ñтраницы: 0 |
proxy
|
phpinfo
|
ÐаÑтройка