149 lines
4.3 KiB
PHP
149 lines
4.3 KiB
PHP
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<?php
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/**
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* File containing the ezcDocumentPcssLayoutDirective class.
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*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*
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* @package Document
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* @version //autogen//
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* @license http://www.apache.org/licenses/LICENSE-2.0 Apache License, Version 2.0
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* @access private
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*/
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/**
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* Pdf CSS layout directive.
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*
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* @package Document
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* @access private
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* @version //autogen//
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*/
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class ezcDocumentPcssLayoutDirective extends ezcDocumentPcssDirective
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{
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/**
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* Regular expression compiled from directive address.
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*
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* @var string
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*/
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protected $regularExpression = null;
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/**
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* Compile regular expression.
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*
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* Compiles the address of this style directive into a PCRE regular
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* expression, which then can be matched against location IDs.
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*/
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protected function compileRegularExpression()
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{
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$regexp = '(^';
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$address = $this->address;
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while ( $token = array_shift( $address ) )
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{
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// Check for direct descendants
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if ( strpos( $token, '>' ) === 0 )
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{
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$token = preg_replace( '(>[\\t\\x20]+)', '', $token );
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$regexp .= '/' . preg_quote( $token );
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}
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elseif ( ( strpos( $token, '.' ) === 0 ) ||
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( strpos( $token, '#' ) === 0 ) )
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{
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$regexp .= '(?:/[^/]+)*/[^.]+';
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array_unshift( $address, $token );
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}
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else
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{
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$regexp .= '(?:/[^/]+)*/' . preg_quote( $token );
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}
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// Append optional class and ID restrictions
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$restrictions = array();
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while ( isset( $address[0] ) &&
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( ( strpos( $address[0], '.' ) === 0 ) ||
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( strpos( $address[0], '#' ) === 0 ) ) )
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{
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$token = array_shift( $address );
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$restrictions[$token[0]] = substr( $token, 1 );
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}
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// Append optional restrictions
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if ( isset( $restrictions['.'] ) )
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{
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$regexp .= '\\.(?:[a-z0-9_-]+_)?' . preg_quote( $restrictions['.'] ) . '(?:_[a-z0-9_-]+)?';
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}
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else
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{
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$regexp .= '(?:\\.[a-z0-9_-]+)?';
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}
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// Append optional restrictions
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if ( isset( $restrictions['#'] ) )
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{
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$regexp .= '#' . preg_quote( $restrictions['#'] );
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}
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else
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{
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$regexp .= '(?:#[a-z0-9_-]+)?';
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}
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$regexp .= '(?:\\[[^]]+\\])*';
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}
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$regexp .= '$)S';
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$this->regularExpression = $regexp;
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}
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/**
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* Return a PCRE regular expression for directive address.
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*
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* Return a PCRE regular expression representing the address of
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* the directive, intended to match location IDs representing
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* the docbook element nodes.
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*
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* @param string $locationId
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* @return string
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*/
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public function getRegularExpression()
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{
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if ( $this->regularExpression === null )
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{
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$this->compileRegularExpression();
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}
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return $this->regularExpression;
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}
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/**
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* Recreate directive from var_export.
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*
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* @param array $properties
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* @return ezcDocumentPcssDirective
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*/
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public static function __set_state( $properties )
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{
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return new ezcDocumentPcssLayoutDirective(
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$properties['address'],
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$properties['formats'],
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$properties['file'],
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$properties['line'],
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$properties['position']
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);
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}
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}
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?>
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