117 lines
3.4 KiB
PHP
117 lines
3.4 KiB
PHP
<?php
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/* vim: set expandtab tabstop=4 shiftwidth=4: */
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//
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// Copyright (c) 2004-2005 Laurent Bedubourg
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 2.1 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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//
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// Authors: Laurent Bedubourg <lbedubourg@motion-twin.com>
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//
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require_once PHPTAL_DIR.'PHPTAL/Php/Attribute.php';
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// TAL Specifications 1.4
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//
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// argument ::= (['text'] | 'structure') expression
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//
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// Default behaviour : text
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//
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// <span tal:replace="template/title">Title</span>
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// <span tal:replace="text template/title">Title</span>
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// <span tal:replace="structure table" />
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// <span tal:replace="nothing">This element is a comment.</span>
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//
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require_once PHPTAL_DIR.'PHPTAL/Php/TalesChainExecutor.php';
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/**
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* @package phptal.php.attribute.tal
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* @author Laurent Bedubourg <lbedubourg@motion-twin.com>
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*/
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class PHPTAL_Php_Attribute_TAL_Replace
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extends PHPTAL_Php_Attribute
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implements PHPTAL_Php_TalesChainReader
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{
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const REPLACE_VAR = '$__replace__';
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public function start()
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{
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// tal:replace="" => do nothing and ignore node
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if (trim($this->expression) == ""){
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return;
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}
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$expression = $this->extractEchoType($this->expression);
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$code = $this->tag->generator->evaluateExpression($expression);
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// chained expression
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if (is_array($code)){
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return $this->replaceByChainedExpression($code);
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}
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// nothing do nothing
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if ($code == PHPTAL_TALES_NOTHING_KEYWORD) {
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return;
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}
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// default generate default tag content
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if ($code == PHPTAL_TALES_DEFAULT_KEYWORD) {
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return $this->generateDefault();
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}
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// replace tag with result of expression
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$this->doEcho($code);
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}
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public function end()
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{
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}
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private function replaceByChainedExpression($expArray)
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{
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$executor = new PHPTAL_Php_TalesChainExecutor(
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$this->tag->generator, $expArray, $this
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);
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}
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public function talesChainNothingKeyword(PHPTAL_Php_TalesChainExecutor $executor)
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{
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$executor->continueChain();
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}
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public function talesChainDefaultKeyword(PHPTAL_Php_TalesChainExecutor $executor)
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{
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$executor->doElse();
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$this->generateDefault();
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$executor->breakChain();
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}
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public function talesChainPart(PHPTAL_Php_TalesChainExecutor $executor, $exp, $islast)
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{
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$executor->doIf('!phptal_isempty('.self::REPLACE_VAR.' = '.$exp.')');
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$this->doEcho(self::REPLACE_VAR);
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}
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private function generateDefault()
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{
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$this->tag->generateSurroundHead();
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$this->tag->generateHead();
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$this->tag->generateContent();
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$this->tag->generateFoot();
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$this->tag->generateSurroundFoot();
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}
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}
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?>
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