Библиотека для cis, online, cms1
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Фёдор Подлеснов
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507
PHPTAL/Php/Node.php
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507
PHPTAL/Php/Node.php
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<?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/Dom/Defs.php';
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require_once PHPTAL_DIR.'PHPTAL/Php/CodeWriter.php';
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require_once PHPTAL_DIR.'PHPTAL/Php/Attribute.php';
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/**
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* Document node abstract class.
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* @package phptal.php
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* @author Laurent Bedubourg <lbedubourg@motion-twin.com>
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*/
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abstract class PHPTAL_Php_Node
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{
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public $node;
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public $generator;
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public function __construct(PHPTAL_Php_CodeWriter $generator, PHPTAL_Dom_Node $node)
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{
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$this->generator = $generator;
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$this->node = $node;
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}
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public function getSourceFile()
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{
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return $this->node->getSourceFile();
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}
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public function getSourceLine()
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{
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return $this->node->getSourceLine();
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}
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public abstract function generate();
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}
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/**
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* Node container.
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*
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* @package phptal.php
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* @author Laurent Bedubourg <lbedubourg@motion-twin.com>
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*/
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class PHPTAL_Php_Tree extends PHPTAL_Php_Node
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{
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public $children;
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public function __construct(PHPTAL_Php_CodeWriter $gen, $node)
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{
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parent::__construct($gen,$node);
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$this->children = array();
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foreach ($node->getChildren() as $child){
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if ($child instanceOf PHPTAL_Dom_Element){
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$gen = new PHPTAL_Php_Element($this->generator, $child);
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}
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else if ($child instanceOf PHPTAL_Dom_Text){
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$gen = new PHPTAL_Php_Text($this->generator, $child);
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}
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else if ($child instanceOf PHPTAL_Dom_Doctype){
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$gen = new PHPTAL_Php_Doctype($this->generator, $child);
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}
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else if ($child instanceOf PHPTAL_Dom_XmlDeclaration){
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$gen = new PHPTAL_Php_XmlDeclaration($this->generator, $child);
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}
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else if ($child instanceOf PHPTAL_Dom_Specific){
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$gen = new PHPTAL_Php_Specific($this->generator, $child);
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}
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else if ($child instanceOf PHPTAL_Dom_Comment){
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$gen = new PHPTAL_Php_Comment($this->generator, $child);
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}
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else {
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throw new PHPTAL_Exception('Unhandled node class '.get_class($child));
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}
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array_push($this->children, $gen);
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}
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}
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public function generate()
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{
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try
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{
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foreach ($this->children as $child){
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$child->generate();
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}
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}
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catch(PHPTAL_Exception $e)
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{
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$e->hintSrcPosition($this->getSourceFile(), $this->getSourceLine());
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throw $e;
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}
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}
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}
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/**
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* Document Tag representation.
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*
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* This is the main class used by PHPTAL because TAL is a Template Attribute
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* Language, other Node kinds are (usefull) toys.
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*
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* @package phptal.php
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* @author Laurent Bedubourg <lbedubourg@motion-twin.com>
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*/
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class PHPTAL_Php_Element extends PHPTAL_Php_Tree
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{
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const ERR_ATTRIBUTES_CONFLICT =
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"Attribute conflict in '%s' at line '%d', '%s' cannot appear with '%s'";
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public $name;
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public $attributes = array();
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public $talAttributes = array();
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public $overwrittenAttributes = array();
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public $replaceAttributes = array();
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public $contentAttributes = array();
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public $surroundAttributes = array();
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public $headFootDisabled = false;
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public $headFootPrintCondition = false;
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public $hidden = false;
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public function __construct(PHPTAL_Php_CodeWriter $generator, $node)
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{
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parent::__construct($generator, $node);
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$this->name = $node->getName();
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$this->attributes = $node->attributes;
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$this->xmlns = $node->getXmlnsState();
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$this->prepare();
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}
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private function prepare()
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{
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$this->prepareAttributes();
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$this->separateAttributes();
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$this->orderTalAttributes();
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}
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public function generate()
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{
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if ($this->generator->isDebugOn()){
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$this->generator->pushCode('$ctx->__line = '.$this->getSourceLine());
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$this->generator->doComment('tag "'.$this->name.'" from line '.$this->getSourceLine());
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}
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if (count($this->replaceAttributes) > 0) {
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$this->generateSurroundHead();
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foreach ($this->replaceAttributes as $att) {
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$att->start();
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$att->end();
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}
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$this->generateSurroundFoot();
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return;
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}
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$this->generateSurroundHead();
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// a surround tag may decide to hide us (tal:define for example)
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if (!$this->hidden){
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$this->generateHead();
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$this->generateContent();
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$this->generateFoot();
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}
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$this->generateSurroundFoot();
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}
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/** Returns true if the element contains specified PHPTAL attribute. */
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public function hasAttribute($name)
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{
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return $this->node->hasAttribute($name);
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}
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/** Returns the value of specified PHPTAL attribute. */
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public function getAttribute($name)
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{
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return $this->node->getAttribute($name);
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}
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public function isOverwrittenAttribute($name)
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{
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return array_key_exists($name, $this->overwrittenAttributes);
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}
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public function getOverwrittenAttributeVarName($name)
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{
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return $this->overwrittenAttributes[$name];
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}
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public function overwriteAttributeWithPhpValue($name, $phpVariable)
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{
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$this->attributes[$name] = '<?php echo '.$phpVariable.' ?>';
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$this->overwrittenAttributes[$name] = $phpVariable;
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}
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/**
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* Returns true if this element or one of its PHPTAL attributes has some
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* content to print (an empty text node child does not count).
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*/
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public function hasRealContent()
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{
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return $this->node->hasRealContent()
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|| count($this->contentAttributes) > 0;
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}
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public function hasRealAttributes()
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{
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return ((count($this->attributes) - count($this->talAttributes)) > 0) || $this->hasAttribute('tal:attributes');
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}
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// ~~~~~ Generation methods may be called by some PHPTAL attributes ~~~~~
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public function generateSurroundHead()
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{
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foreach ($this->surroundAttributes as $att) {
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$att->start();
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}
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}
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public function generateHead()
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{
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if ($this->headFootDisabled) return;
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if ($this->headFootPrintCondition) {
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$this->generator->doIf($this->headFootPrintCondition);
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}
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$this->generator->pushHtml('<'.$this->name);
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$this->generateAttributes();
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if ($this->isEmptyNode()){
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$this->generator->pushHtml('/>');
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}
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else {
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$this->generator->pushHtml('>');
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}
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if ($this->headFootPrintCondition) {
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$this->generator->doEnd();
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}
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}
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public function generateContent($realContent=false)
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{
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if ($this->isEmptyNode()){
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return;
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}
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if (!$realContent && count($this->contentAttributes) > 0) {
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foreach ($this->contentAttributes as $att) {
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$att->start();
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$att->end();
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}
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return;
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}
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parent::generate();
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}
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public function generateFoot()
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{
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if ($this->headFootDisabled)
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return;
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if ($this->isEmptyNode())
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return;
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if ($this->headFootPrintCondition) {
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$this->generator->doIf($this->headFootPrintCondition);
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}
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$this->generator->pushHtml( '</'.$this->name.'>' );
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if ($this->headFootPrintCondition) {
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$this->generator->doEnd();
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}
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}
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public function generateSurroundFoot()
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{
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for ($i = (count($this->surroundAttributes)-1); $i >= 0; $i--) {
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$this->surroundAttributes[$i]->end();
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}
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}
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// ~~~~~ Private members ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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private function generateAttributes()
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{
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// A phptal attribute can modify any node attribute replacing
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// its value by a <?php echo $somevalue ?\ >.
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//
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// The entire attribute (key="value") can be replaced using the
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// '$__ATT_' value code, it is very usefull for xhtml boolean
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// attributes like selected, checked, etc...
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//
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// example:
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//
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// $tag->generator->pushCode(
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// '$__ATT_checked = $somecondition ? \'checked="checked"\' : \'\''
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// );
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// $tag->attributes['checked'] = '<?php echo $__ATT_checked ?\>';
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//
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$fullreplaceRx = PHPTAL_Php_Attribute_TAL_Attributes::REGEX_FULL_REPLACE;
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foreach ($this->attributes as $key=>$value) {
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if (preg_match($fullreplaceRx, $value)){
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$this->generator->pushHtml($value);
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}
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else if (strpos($value,'<?php') === 0){
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$this->generator->pushHtml(' '.$key.'="');
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$this->generator->pushRawHtml($value);
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$this->generator->pushHtml('"');
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}
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else {
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$this->generator->pushHtml(' '.$key.'="'.$value.'"');
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}
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}
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}
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private function getNodePrefix()
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{
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$result = false;
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if (preg_match('/^(.*?):block$/', $this->name, $m)){
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list(,$result) = $m;
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}
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return $result;
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}
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private function isEmptyNode()
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{
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return ($this->generator->getOutputMode() == PHPTAL::XHTML && PHPTAL_Dom_Defs::getInstance()->isEmptyTag($this->name)) ||
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($this->generator->getOutputMode() == PHPTAL::XML && !$this->hasContent());
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}
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private function hasContent()
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{
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return count($this->children) > 0 || count($this->contentAttributes) > 0;
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}
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private function prepareAttributes()
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{
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//TODO: use registered namespaces instead of the raw list
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if (preg_match('/^(tal|metal|phptal|i18n):block$/', $this->name, $m)) {
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$this->headFootDisabled = true;
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list(,$ns) = $m;
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$attributes = array();
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foreach ($this->attributes as $key=>$value) {
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if ($this->xmlns->isPhpTalAttribute("$ns:$key")) {
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$attributes["$ns:$key"] = $value;
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}
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else {
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$attributes[$key] = $value;
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}
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}
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$this->attributes = $attributes;
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}
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}
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private function separateAttributes()
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{
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$attributes = array();
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$this->talAttributes = array();
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foreach ($this->attributes as $key=>$value) {
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// remove handled xml namespaces
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if (PHPTAL_Dom_Defs::getInstance()->isHandledXmlNs($key,$value)){
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}
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else if ($this->xmlns->isPhpTalAttribute($key)) {
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$this->talAttributes[$key] = $value;
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}
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else if (PHPTAL_Dom_Defs::getInstance()->isBooleanAttribute($key)) {
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$attributes[$key] = $key;
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}
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else {
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$attributes[$key] = $value;
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}
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}
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$this->attributes = $attributes;
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}
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private function orderTalAttributes()
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{
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$attributes = array();
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foreach ($this->talAttributes as $key=>$exp){
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$name = $this->xmlns->unAliasAttribute($key);
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$att = PHPTAL_Dom_Defs::getInstance()->getNamespaceAttribute($name);
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if (array_key_exists($att->getPriority(), $attributes)){
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$err = sprintf(self::ERR_ATTRIBUTES_CONFLICT,
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$this->name,
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$this->getSourceLine(),
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$key,
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$attributes[$att->getPriority()][0]
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);
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throw new PHPTAL_Exception($err);
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}
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$attributes[$att->getPriority()] = array($key, $att, $exp);
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}
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ksort($attributes);
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$this->talHandlers = array();
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foreach ($attributes as $prio => $dat){
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list($key, $att, $exp) = $dat;
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$handler = $att->createAttributeHandler($this, $exp);
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$this->talHandlers[$prio] = $handler;
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if ($att instanceOf PHPTAL_NamespaceAttributeSurround)
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$this->surroundAttributes[] = $handler;
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else if ($att instanceOf PHPTAL_NamespaceAttributeReplace)
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$this->replaceAttributes[] = $handler;
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else if ($att instanceOf PHPTAL_NamespaceAttributeContent)
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$this->contentAttributes[] = $handler;
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else
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throw new PHPTAL_Exception("Unknown namespace attribute class ".get_class($att));
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}
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}
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}
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/**
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* @package phptal.php
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*/
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class PHPTAL_Php_Comment extends PHPTAL_Php_Node
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{
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public function generate()
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{
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$this->generator->pushRawHtml($this->node->getValue());
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}
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}
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/**
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* Document text data representation.
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* @package phptal.php
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*/
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class PHPTAL_Php_Text extends PHPTAL_Php_Node
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{
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public function generate()
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{
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$this->generator->pushString($this->node->getValue());
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}
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}
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/**
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* Comment, preprocessor, etc... representation.
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*
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* @package phptal.php
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* @author Laurent Bedubourg <lbedubourg@motion-twin.com>
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*/
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class PHPTAL_Php_Specific extends PHPTAL_Php_Node
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{
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public function generate()
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{
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$this->generator->pushHtml($this->node->getValue());
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}
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}
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/**
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* Document doctype representation.
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*
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* @package phptal.php
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* @author Laurent Bedubourg <lbedubourg@motion-twin.com>
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*/
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class PHPTAL_Php_Doctype extends PHPTAL_Php_Node
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||||
{
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public function __construct(PHPTAL_Php_CodeWriter $generator, $node)
|
||||
{
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parent::__construct($generator, $node);
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$this->generator->setDocType($this);
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}
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||||
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||||
public function generate()
|
||||
{;
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$this->generator->doDoctype();
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||||
}
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||||
}
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||||
|
||||
/**
|
||||
* XML declaration node.
|
||||
*
|
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* @package phptal.php
|
||||
* @author Laurent Bedubourg <lbedubourg@motion-twin.com>
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||||
*/
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class PHPTAL_Php_XmlDeclaration extends PHPTAL_Php_Node
|
||||
{
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public function __construct(PHPTAL_Php_CodeWriter $gen, $node)
|
||||
{
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parent::__construct($gen, $node);
|
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$this->generator->setXmlDeclaration($this);
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}
|
||||
|
||||
public function generate()
|
||||
{
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$this->generator->doXmlDeclaration();
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||||
}
|
||||
}
|
||||
|
||||
?>
|
||||
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