457 lines
17 KiB
PHP
457 lines
17 KiB
PHP
<?php
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/* ----------------------------------------------------------------------
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MyOOS [Dumper]
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http://www.oos-shop.de/
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Copyright (c) 2013 - 2022 by the MyOOS Development Team.
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----------------------------------------------------------------------
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Based on:
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MySqlDumper
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http://www.mysqldumper.de
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Copyright (C)2004-2011 Daniel Schlichtholz (admin@mysqldumper.de)
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----------------------------------------------------------------------
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Released under the GNU General Public License
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---------------------------------------------------------------------- */
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if (!defined('MOD_VERSION')) {
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exit('No direct access.');
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}
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define('TPL_DEBUG', 0); // used if evaluationg of template fails
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/***************************************************************************
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* template.php
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* -------------------
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* begin : Saturday, Feb 13, 2001
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* copyright : (C) 2001 The phpBB Group
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* email : support@phpbb.com
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*
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* $Id: template.php 1330 2011-01-07 17:51:25Z dsb1971 $
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*
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*
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***************************************************************************/
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/***************************************************************************
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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***************************************************************************/
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/**
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* Template class. By Nathan Codding of the phpBB group.
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* The interface was originally inspired by PHPLib templates,
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* and the template file formats are quite similar.
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*/
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class MODTemplate
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{
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public $classname = 'MODTemplate';
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// variable that holds all the data we'll be substituting into
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// the compiled templates.
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// ...
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// This will end up being a multi-dimensional array like this:
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// $this->_tpldata[block.][iteration#][child.][iteration#][child2.][iteration#][variablename] == value
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// if it's a root-level variable, it'll be like this:
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// $this->_tpldata[.][0][varname] == value
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public $_tpldata = [];
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// Hash of filenames for each template handle.
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public $files = [];
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// Root template directory.
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public $root = '';
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// this will hash handle names to the compiled code for that handle.
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public $compiled_code = [];
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// This will hold the uncompiled code for that handle.
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public $uncompiled_code = [];
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/**
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* Constructor. Simply sets the root dir.
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*/
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public function __construct($root = '.')
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{
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$this->set_rootdir($root);
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}
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/**
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* Destroys this template object. Should be called when you're done with it, in order
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* to clear out the template data so you can load/parse a new template set.
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*/
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public function destroy()
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{
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$this->_tpldata = [];
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}
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/**
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* Sets the template root directory for this Template object.
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*/
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public function set_rootdir($dir)
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{
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if (!is_dir($dir)) {
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return false;
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}
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$this->root = $dir;
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return true;
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}
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/**
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* Sets the template filenames for handles. $filename_array
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* should be a hash of handle => filename pairs.
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*/
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public function set_filenames($filename_array)
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{
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if (!is_array($filename_array)) {
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return false;
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}
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reset($filename_array);
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foreach ($filename_array as $handle => $filename) {
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$this->files[$handle] = $this->make_filename($filename);
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}
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return true;
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}
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/**
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* Load the file for the handle, compile the file,
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* and run the compiled code. This will print out
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* the results of executing the template.
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*/
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public function pparse($handle)
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{
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// Edit DSB: autimatically assign language vars
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global $lang;
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$this->assign_vars($lang);
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if (!$this->loadfile($handle)) {
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exit("Template->pparse(): Couldn't load template file for handle $handle");
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}
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// actually compile the template now.
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if (!isset($this->compiled_code[$handle]) || empty($this->compiled_code[$handle])) {
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// Actually compile the code now.
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$this->compiled_code[$handle] = $this->compile($this->uncompiled_code[$handle]);
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}
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// Run the compiled code.
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if (defined(TPL_DEBUG) && TPL_DEBUG > 0) {
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echo '<pre>'.htmlspecialchars($this->compiled_code[$handle]).'</pre>';
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}
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eval($this->compiled_code[$handle]);
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return true;
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}
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/**
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* Inserts the uncompiled code for $handle as the
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* value of $varname in the root-level. This can be used
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* to effectively include a template in the middle of another
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* template.
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* Note that all desired assignments to the variables in $handle should be done
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* BEFORE calling this function.
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*/
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public function assign_var_from_handle($varname, $handle)
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{
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if (!$this->loadfile($handle)) {
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exit("Template->assign_var_from_handle(): Couldn't load template file for handle $handle");
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}
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// Compile it, with the "no echo statements" option on.
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$_str = '';
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$code = $this->compile($this->uncompiled_code[$handle], true, '_str');
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// evaluate the variable assignment.
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eval($code);
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// assign the value of the generated variable to the given varname.
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$this->assign_var($varname, $_str);
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return true;
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}
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/**
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* Block-level variable assignment. Adds a new block iteration with the given
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* variable assignments. Note that this should only be called once per block
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* iteration.
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*/
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public function assign_block_vars($blockname, $vararray)
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{
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if (strstr($blockname, '.')) {
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// Nested block.
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$blocks = explode('.', $blockname);
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$blockcount = sizeof($blocks) - 1;
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$str = '$this->_tpldata';
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for ($i = 0; $i < $blockcount; ++$i) {
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$str .= '[\''.$blocks[$i].'.\']';
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eval('$lastiteration = sizeof('.$str.') - 1;');
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$str .= '['.$lastiteration.']';
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}
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// Now we add the block that we're actually assigning to.
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// We're adding a new iteration to this block with the given
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// variable assignments.
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$str .= '[\''.$blocks[$blockcount].'.\'][] = $vararray;';
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// Now we evaluate this assignment we've built up.
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eval($str);
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} else {
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// Top-level block.
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// Add a new iteration to this block with the variable assignments
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// we were given.
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$this->_tpldata[$blockname.'.'][] = $vararray;
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}
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return true;
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}
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/**
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* Root-level variable assignment. Adds to current assignments, overriding
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* any existing variable assignment with the same name.
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*/
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public function assign_vars($vararray)
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{
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global $lang;
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foreach ($vararray as $key => $val) {
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$this->_tpldata['.'][0][$key] = $val;
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}
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return true;
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}
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/**
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* Root-level variable assignment. Adds to current assignments, overriding
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* any existing variable assignment with the same name.
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*/
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public function assign_var($varname, $varval)
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{
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$this->_tpldata['.'][0][$varname] = $varval;
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return true;
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}
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/**
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* Generates a full path+filename for the given filename, which can either
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* be an absolute name, or a name relative to the rootdir for this Template
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* object.
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*/
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public function make_filename($filename)
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{
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// Check if it's an absolute or relative path.
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/*
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if (substr($filename, 0, 1) != '/')
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{
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$filename = $this->root.'/'.$filename;
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}
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*/
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if (!file_exists($filename)) {
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exit("Template->make_filename(): Error - file $filename does not exist");
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}
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return $filename;
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}
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/**
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* If not already done, load the file for the given handle and populate
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* the uncompiled_code[] hash with its code. Do not compile.
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*/
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public function loadfile($handle)
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{
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// If the file for this handle is already loaded and compiled, do nothing.
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if (isset($this->uncompiled_code[$handle]) && !empty($this->uncompiled_code[$handle])) {
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return true;
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}
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// If we don't have a file assigned to this handle, die.
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if (!isset($this->files[$handle])) {
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exit("Template->loadfile(): No file specified for handle $handle");
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}
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$filename = $this->files[$handle];
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$str = implode('', @file($filename));
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if (empty($str)) {
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exit("Template->loadfile(): File $filename for handle $handle is empty");
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}
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$this->uncompiled_code[$handle] = $str;
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return true;
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}
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/**
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* Compiles the given string of code, and returns
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* the result in a string.
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* If "do_not_echo" is true, the returned code will not be directly
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* executable, but can be used as part of a variable assignment
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* for use in assign_code_from_handle().
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*/
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public function compile($code, $do_not_echo = false, $retvar = '')
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{
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// replace \ with \\ and then ' with \'.
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$code = str_replace('\\', '\\\\', $code);
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$code = str_replace('\'', '\\\'', $code);
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// change template varrefs into PHP varrefs
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// This one will handle varrefs WITH namespaces
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$varrefs = [];
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preg_match_all('#\{(([a-z0-9\-_]+?\.)+?)([a-z0-9\-_]+?)\}#is', $code, $varrefs);
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$varcount = sizeof($varrefs[1]);
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for ($i = 0; $i < $varcount; ++$i) {
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$namespace = $varrefs[1][$i];
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$varname = $varrefs[3][$i];
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$new = $this->generate_block_varref($namespace, $varname);
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$code = str_replace($varrefs[0][$i], $new, $code);
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}
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// This will handle the remaining root-level varrefs
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$code = preg_replace('#\{([a-z0-9\-_]*?)\}#is', '\'.( ( isset($this->_tpldata[\'.\'][0][\'\1\']) ) ? $this->_tpldata[\'.\'][0][\'\1\'] : \'\' ) . \'', $code);
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// Break it up into lines.
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$code_lines = explode("\n", $code);
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$block_nesting_level = 0;
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$block_names = [];
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$block_names[0] = '.';
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// Second: prepend echo ', append '."\n"; to each line.
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$line_count = sizeof($code_lines);
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for ($i = 0; $i < $line_count; ++$i) {
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$code_lines[$i] = chop($code_lines[$i]);
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if (preg_match('#<!-- BEGIN (.*?) -->#', $code_lines[$i], $m)) {
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$n[0] = $m[0];
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$n[1] = $m[1];
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// Added: dougk_ff7-Keeps templates from bombing if begin is on the same line as end.. I think. :)
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if (preg_match('#<!-- END (.*?) -->#', $code_lines[$i], $n)) {
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++$block_nesting_level;
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$block_names[$block_nesting_level] = $m[1];
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if ($block_nesting_level < 2) {
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// Block is not nested.
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$code_lines[$i] = '$_'.$n[1].'_count = ( isset($this->_tpldata[\''.$n[1].'.\']) ) ? sizeof($this->_tpldata[\''.$n[1].'.\']) : 0;';
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$code_lines[$i] .= "\n".'for ($_'.$n[1].'_i = 0; $_'.$n[1].'_i < $_'.$n[1].'_count; $_'.$n[1].'_i++)';
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$code_lines[$i] .= "\n".'{';
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} else {
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// This block is nested.
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// Generate a namespace string for this block.
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$namespace = implode('.', $block_names);
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// strip leading period from root level..
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$namespace = substr($namespace, 2);
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// Get a reference to the data array for this block that depends on the
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// current indices of all parent blocks.
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$varref = $this->generate_block_data_ref($namespace, false);
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// Create the for loop code to iterate over this block.
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$code_lines[$i] = '$_'.$n[1].'_count = ( isset('.$varref.') ) ? sizeof('.$varref.') : 0;';
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$code_lines[$i] .= "\n".'for ($_'.$n[1].'_i = 0; $_'.$n[1].'_i < $_'.$n[1].'_count; $_'.$n[1].'_i++)';
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$code_lines[$i] .= "\n".'{';
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}
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// We have the end of a block.
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unset($block_names[$block_nesting_level]);
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--$block_nesting_level;
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$code_lines[$i] .= '} // END '.$n[1];
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$m[0] = $n[0];
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$m[1] = $n[1];
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} else {
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// We have the start of a block.
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++$block_nesting_level;
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$block_names[$block_nesting_level] = $m[1];
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if ($block_nesting_level < 2) {
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// Block is not nested.
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$code_lines[$i] = '$_'.$m[1].'_count = ( isset($this->_tpldata[\''.$m[1].'.\']) ) ? sizeof($this->_tpldata[\''.$m[1].'.\']) : 0;';
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$code_lines[$i] .= "\n".'for ($_'.$m[1].'_i = 0; $_'.$m[1].'_i < $_'.$m[1].'_count; $_'.$m[1].'_i++)';
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$code_lines[$i] .= "\n".'{';
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} else {
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// This block is nested.
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// Generate a namespace string for this block.
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$namespace = implode('.', $block_names);
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// strip leading period from root level..
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$namespace = substr($namespace, 2);
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// Get a reference to the data array for this block that depends on the
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// current indices of all parent blocks.
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$varref = $this->generate_block_data_ref($namespace, false);
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// Create the for loop code to iterate over this block.
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$code_lines[$i] = '$_'.$m[1].'_count = ( isset('.$varref.') ) ? sizeof('.$varref.') : 0;';
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$code_lines[$i] .= "\n".'for ($_'.$m[1].'_i = 0; $_'.$m[1].'_i < $_'.$m[1].'_count; $_'.$m[1].'_i++)';
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$code_lines[$i] .= "\n".'{';
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}
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}
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} elseif (preg_match('#<!-- END (.*?) -->#', $code_lines[$i], $m)) {
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// We have the end of a block.
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unset($block_names[$block_nesting_level]);
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--$block_nesting_level;
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$code_lines[$i] = '} // END '.$m[1];
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} else {
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// We have an ordinary line of code.
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if (!$do_not_echo) {
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$code_lines[$i] = 'echo \''.$code_lines[$i].'\'."\\n";';
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} else {
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$code_lines[$i] = '$'.$retvar.'.= \''.$code_lines[$i].'\'."\\n";';
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}
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}
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}
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// Bring it back into a single string of lines of code.
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$code = implode("\n", $code_lines);
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return $code;
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}
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/**
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* Generates a reference to the given variable inside the given (possibly nested)
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* block namespace. This is a string of the form:
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* '.$this->_tpldata['parent'][$_parent_i]['$child1'][$_child1_i]['$child2'][$_child2_i]...['varname'].'
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* It's ready to be inserted into an "echo" line in one of the templates.
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* NOTE: expects a trailing "." on the namespace.
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*/
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public function generate_block_varref($namespace, $varname)
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{
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// Strip the trailing period.
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$namespace = substr($namespace, 0, strlen($namespace) - 1);
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// Get a reference to the data block for this namespace.
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$varref = $this->generate_block_data_ref($namespace, true);
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// Prepend the necessary code to stick this in an echo line.
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// Append the variable reference.
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$varref .= '[\''.$varname.'\']';
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$varref = '\'.( ( isset('.$varref.') ) ? '.$varref.' : \'\' ) . \'';
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return $varref;
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}
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/**
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* Generates a reference to the array of data values for the given
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* (possibly nested) block namespace. This is a string of the form:
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* $this->_tpldata['parent'][$_parent_i]['$child1'][$_child1_i]['$child2'][$_child2_i]...['$childN'].
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*
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* If $include_last_iterator is true, then [$_childN_i] will be appended to the form shown above.
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* NOTE: does not expect a trailing "." on the blockname.
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*/
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public function generate_block_data_ref($blockname, $include_last_iterator)
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{
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// Get an array of the blocks involved.
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$blocks = explode('.', $blockname);
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$blockcount = sizeof($blocks) - 1;
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$varref = '$this->_tpldata';
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// Build up the string with everything but the last child.
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for ($i = 0; $i < $blockcount; ++$i) {
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$varref .= '[\''.$blocks[$i].'.\'][$_'.$blocks[$i].'_i]';
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}
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// Add the block reference for the last child.
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$varref .= '[\''.$blocks[$blockcount].'.\']';
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// Add the iterator for the last child if requried.
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if ($include_last_iterator) {
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$varref .= '[$_'.$blocks[$blockcount].'_i]';
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}
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return $varref;
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}
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}
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