551 lines
19 KiB
PHP
551 lines
19 KiB
PHP
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<?php
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/*
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* Copyright (C) 2001 Kai Blaschke <webmaster@thw-theorie.de>
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*
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* The included "THW Thema" templates, logos and the Q&A catalog are protected
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* by copyright laws, and must not be used without the written permission
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* of the
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*
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* Bundesanstalt Technisches Hilfswerk
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* Provinzialstra<EFBFBD>e 93
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* D-53127 Bonn
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* Germany
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* E-Mail: redaktion@thw.de
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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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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; 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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/************************************************************
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* Template class
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*
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* This class is capable of replacing variables with text,
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* including other templates, and it can parse dynamic blocks
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* which can be nested inside other blocks.
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*
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* Predefined variables:
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*
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* {templatePath} Contains the template path
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* {templateLang} Contains the country code, if set
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*
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* If you don't need them, remove them immediately after
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* creating the class instance or setting a new template path.
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*
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* $id: class Template v1.0 / Kai Blaschke $
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*
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**************************************************************/
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class Template {
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// ************************************************************
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// Member variables
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var $TPLFILES = array(); // Contains all template filenames
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var $TPLDATA = array(); // Contains all template data
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var $LOADED = array(); // Already loaded templates are
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// stored as $LOADED[HANDLE]=>TRUE
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var $PARSEVARS = array(); // Array of variable/value pairs
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// to be replaced in templates
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var $HANDLES = array(); // Handles which contain parsed templates
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var $BLOCKS = array(); // Array with dynamic block data
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var $H_BLOCKS = array(); // Parsed block data
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// Filename: $TPLDIR/filename[.$LANG].tpl
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var $TPLDIR; // Path to template files
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var $LANG; // Country code (en, de, fr, ...)
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var $TPLEXT; // Filename extension (default is .tpl)
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// ************************************************************
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// Global settings
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var $RPLBRACES = TRUE; // Safely replaces curly braces with HTML
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// entities in variable values if
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// set to TRUE.
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var $WIN32 = FALSE; // Set to "TRUE" on Win32 systems, if
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// you encounter problems with paths.
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var $DIEONERR = TRUE; // If set to TRUE, die() is called in error
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// ************************************************************
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// Constructor
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function Template($tpldir, $lang = "", $tplext = "tpl")
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{
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$this->setPath($tpldir);
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$this->LANG = strtolower($lang);
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$this->TPLEXT = $tplext;
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$this->addVars("templateLang", $this->LANG);
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}
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// ************************************************************
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// Sets or changes the template search path
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function setPath($path)
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{
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if ($this->WIN32) {
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if (ord(substr($path, -1)) != 92) $path .= chr(92);
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} else {
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if (ord(substr($path, -1)) != 47) $path .= chr(47);
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}
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if (is_dir($path)) {
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$this->TPLDIR = $path;
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// Add a path variable for use in templates
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$this->addVars("templatePath", $path);
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return TRUE;
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} else {
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echo "[TEMPLATE ENGINE] The specified template path "
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."'<b>".$path."</b>' is invalid!<br />";
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$this->TPLDIR = "";
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if ($this->DIEONERR == TRUE) die();
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return FALSE;
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}
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}
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// ************************************************************
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// Get dynamic blocks recursively to enable nested blocks
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function getDynamicBlocks($tplFilename, $contents)
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{
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preg_match_all("/(\{\|([a-zA-Z0-9]+)\})(.*?)\\1/s",
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$contents, $blocks);
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if (empty($blocks[0])) return;
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// Go through all blocks and save them in $this->BLOCKS
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for ($I=0; $I<count($blocks[0]); $I++) {
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$blockparts = array();
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preg_match_all("/(\{\|" . $blocks[2][$I] .
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"\*([a-zA-Z0-9]+)\})(.*?)\\1/s",
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$blocks[3][$I], $blockparts);
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for ($J=0; $J<count($blockparts[0]); $J++) {
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// Get nested blocks
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$this->getDynamicBlocks($tplFilename, $blockparts[3][$J]);
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// Replace block data with placeholders
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$blockparts[3][$J] =
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preg_replace("/(\{\|([a-zA-Z0-9]+)\})(.*?)\\1/s",
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"\\1", $blockparts[3][$J]);
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// Save block data
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$this->BLOCKS[$tplFilename][$blocks[2][$I]][$blockparts[2][$J]]
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= $blockparts[3][$J];
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}
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}
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}
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// ************************************************************
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// Loads a template, runs some checks and extracts dynamic blocks
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function loadTemplate($tplFilename)
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{
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// Template already loaded?
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if (isset($this->LOADED[$tplFilename])) return TRUE;
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// Has the path been set?
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if (empty($this->TPLDIR)) {
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echo "[TEMPLATE ENGINE] Template path not set or invalid!<br />";
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if ($this->DIEONERR == TRUE) die();
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return FALSE;
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}
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// Is a user-defined county code set?
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if (!empty($this->LANG)) {
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// Yes. Try to find template with the specified CC
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if (file_exists($this->TPLDIR.$this->TPLFILES[$tplFilename]."."
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.$this->LANG.".".$this->TPLEXT)) {
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$filename = $this->TPLDIR.$this->TPLFILES[$tplFilename].".".
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$this->LANG.".".$this->TPLEXT;
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} else {
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// Otherwise, use template filename without CC
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if (file_exists($this->TPLDIR.$this->TPLFILES[$tplFilename]."."
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.$this->TPLEXT)) {
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$filename = $this->TPLDIR.$this->TPLFILES[$tplFilename]."."
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.$this->TPLEXT;
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} else {
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echo "[TEMPLATE ENGINE] Can't find template "
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."'".$tplFilename."'!<br />";
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if ($this->DIEONERR == TRUE) die();
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return FALSE;
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}
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}
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} else {
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// No. Use template filename without CC
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if (file_exists($this->TPLDIR.$this->TPLFILES[$tplFilename]."."
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.$this->TPLEXT)) {
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$filename = $this->TPLDIR.$this->TPLFILES[$tplFilename]."."
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.$this->TPLEXT;
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} else {
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echo "[TEMPLATE ENGINE] Can't find template "
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."'".$tplFilename."'!<br />";
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if ($this->DIEONERR == TRUE) die();
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return FALSE;
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}
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}
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// Load template file
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$contents = implode("", (@file($filename)));
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if (!$contents || empty($contents)) {
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echo "[TEMPLATE ENGINE] Can't load template '"
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.$tplFilename."'!<br />";
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if ($this->DIEONERR == TRUE) die();
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return FALSE;
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}
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// Parse dynamic blocks recursively
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$this->getDynamicBlocks($tplFilename, $contents);
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// Replace all block data with placeholders
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$contents = preg_replace("/(\{\|([a-zA-Z0-9]+)\})(.*?)\\1/s", "\\1",
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$contents);
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$this->TPLDATA[$tplFilename] = $contents;
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$this->LOADED[$tplFilename] = 1;
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return TRUE;
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}
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// ************************************************************
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// Parses a template and loads it if neccessary.
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// The result is assigned or concatenated to the specified handle.
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function parse($handle = "",
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$file = "",
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$append = FALSE,
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$delunused = FALSE)
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{
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// Check if all prerequisites are met
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if (empty($handle) || empty($file))
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return FALSE;
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if (!isset($this->TPLFILES[$file]))
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return FALSE;
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if (!isset($this->LOADED[$file])&&!$this->loadTemplate($file))
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return FALSE;
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$templateCopy = $this->TPLDATA[$file];
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// Reset array pointers
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reset($this->HANDLES);
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reset($this->PARSEVARS);
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// Replace blocks
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if (isset($this->H_BLOCKS[$file])) {
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reset($this->H_BLOCKS[$file]);
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while (list($varname, $value) = each($this->H_BLOCKS[$file]))
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$templateCopy = preg_replace("/\{\|".$varname."\}/i",
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$value, $templateCopy);
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}
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// Replace variables
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while (list($varname, $value) = each($this->PARSEVARS))
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$templateCopy = preg_replace("/\{".$varname."\}/i",
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$value, $templateCopy);
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// Replace {~name} placeholders with already parsed handle of
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// the same name
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while (list($varname, $value) = each($this->HANDLES))
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$templateCopy = preg_replace("/\{\~".$varname."\}/i",
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$value, $templateCopy);
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// Delete unused variables and placeholders
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if ($delunused)
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$templateCopy = preg_replace("/\{[~|\|]?(\w*?)\}/", "",
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$templateCopy);
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// Assign to handle
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if ($append && isset($this->HANDLES[$handle])) {
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$this->HANDLES[$handle] .= $templateCopy;
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} else {
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$this->HANDLES[$handle] = $templateCopy;
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}
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return TRUE;
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}
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// ************************************************************
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// Parses multiple templates.
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// $list is an associative array of the type "handle"=>"template".
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// Note that concatenation is not possible. Use the parse() method instead.
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function multiParse($list)
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{
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if (!is_array($list)) return FALSE;
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while (list($handle, $file) = each($list))
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if (!$this->parse($handle, $file)) return FALSE;
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return TRUE;
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}
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// ************************************************************
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// Parses a template and prints the result.
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function printParse($handle = "", $file = "", $append = FALSE)
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{
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if ($this->parse($handle, $file, $append)) {
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$this->printHandle($handle);
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return TRUE;
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}
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return FALSE;
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}
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// ************************************************************
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// Parses a block and replaces or appends the result to the block handle.
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//
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// Note: First argument is the template file name containing the blocks,
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// not a handle name!
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//
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// Note: This function has no effect on any template handle.
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// Parsed block data is inserted into the template handle in the
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// parse() method.
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function parseBlock($file = "",
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$block = "",
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$blockpart = "",
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$append = FALSE,
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$delunused = FALSE)
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{
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if (empty($file) || empty($block) || empty($blockpart))
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return FALSE;
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if (!isset($this->TPLFILES[$file]))
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return FALSE;
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if (!isset($this->LOADED[$file])&&!$this->loadTemplate($file))
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return FALSE;
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$blockCopy = $this->BLOCKS[$file][$block][$blockpart];
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// Reset array pointers
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reset($this->H_BLOCKS);
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reset($this->PARSEVARS);
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// Replace blocks
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if (isset($this->H_BLOCKS[$file])) {
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reset($this->H_BLOCKS[$file]);
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while (list($varname, $value) = each($this->H_BLOCKS[$file]))
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$blockCopy = preg_replace("/\{\|".$varname."\}/i",
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$value, $blockCopy);
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}
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// Replace variables
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while (list($varname, $value) = each($this->PARSEVARS))
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$blockCopy = preg_replace("/\{".$varname."\}/i",
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$value, $blockCopy);
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// Replace {~name} placeholders with already parsed handle of
|
|||
|
|
// the same name
|
|||
|
|
while (list($varname, $value) = each($this->HANDLES))
|
|||
|
|
$blockCopy = preg_replace("/\{\~".$varname."\}/i",
|
|||
|
|
$value, $blockCopy);
|
|||
|
|
|
|||
|
|
// Delete unused variables and placeholders
|
|||
|
|
if ($delunused)
|
|||
|
|
$blockCopy = preg_replace("/\{[~|]?(\w*?)\}/", "", $blockCopy);
|
|||
|
|
|
|||
|
|
// Assign to handle
|
|||
|
|
if ($append && isset($this->H_BLOCKS[$file][$block])) {
|
|||
|
|
$this->H_BLOCKS[$file][$block] .= $blockCopy;
|
|||
|
|
} else {
|
|||
|
|
$this->H_BLOCKS[$file][$block] = $blockCopy;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
return TRUE;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// ************************************************************
|
|||
|
|
// Deletes all block handles
|
|||
|
|
|
|||
|
|
function clearBlockHandles()
|
|||
|
|
{
|
|||
|
|
if (!empty($this->H_BLOCKS)) {
|
|||
|
|
reset($this->H_BLOCKS);
|
|||
|
|
while (list($ref, $val) = each($this->H_BLOCKS))
|
|||
|
|
unset($this->H_BLOCKS[$ref]);
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// ************************************************************
|
|||
|
|
// Deletes the specified block handle
|
|||
|
|
|
|||
|
|
function delBlockHandle($file, $block)
|
|||
|
|
{
|
|||
|
|
if (!empty($file) && !empty($block))
|
|||
|
|
if (isset($this->H_BLOCKS[$file][$block]))
|
|||
|
|
unset($this->H_BLOCKS[$file][$block]);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// ************************************************************
|
|||
|
|
// Adds one or more templates
|
|||
|
|
// You can pass one associative array with $handle=>$filename pairs,
|
|||
|
|
// or two strings ($handle, $filename) to this function.
|
|||
|
|
|
|||
|
|
function addTemplates($tplList, $tplFilename = "")
|
|||
|
|
{
|
|||
|
|
if (is_array($tplList)) {
|
|||
|
|
reset($tplList);
|
|||
|
|
while (list($handle, $filename) = each($tplList)) {
|
|||
|
|
// Add handle to list
|
|||
|
|
$this->TPLFILES[$handle] = $filename;
|
|||
|
|
// Delete loaded flag if set
|
|||
|
|
unset($this->LOADED[$handle]);
|
|||
|
|
}
|
|||
|
|
} else {
|
|||
|
|
$this->TPLFILES[$tplList] = $tplFilename;
|
|||
|
|
unset($this->LOADED[$tplList]);
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// ************************************************************
|
|||
|
|
// Deletes all template handles
|
|||
|
|
|
|||
|
|
function clearHandles()
|
|||
|
|
{
|
|||
|
|
if (!empty($this->HANDLES)) {
|
|||
|
|
reset($this->HANDLES);
|
|||
|
|
while (list($ref, $val) = each($this->HANDLES))
|
|||
|
|
unset($this->HANDLES[$ref]);
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// ************************************************************
|
|||
|
|
// Deletes the specified template handle
|
|||
|
|
|
|||
|
|
function delHandle($handleName = "")
|
|||
|
|
{
|
|||
|
|
if (!empty($handleName))
|
|||
|
|
if (isset($this->HANDLES[$handleName]))
|
|||
|
|
unset($this->HANDLES[$handleName]);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// ************************************************************
|
|||
|
|
// Returns the contents of the specified template handle
|
|||
|
|
|
|||
|
|
function getHandle($handleName = "")
|
|||
|
|
{
|
|||
|
|
if (empty($handleName))
|
|||
|
|
return FALSE;
|
|||
|
|
|
|||
|
|
if (isset($this->HANDLES[$handleName]))
|
|||
|
|
return $this->HANDLES[$handleName];
|
|||
|
|
|
|||
|
|
return FALSE;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// ************************************************************
|
|||
|
|
// Prints a parsed template handle
|
|||
|
|
|
|||
|
|
function printHandle($handleName = "")
|
|||
|
|
{
|
|||
|
|
if (empty($handleName)) return FALSE;
|
|||
|
|
|
|||
|
|
// Remove all remaining placeholders
|
|||
|
|
$this->HANDLES[$handleName] = preg_replace("/\{[~|\|]?(\w*?)\}/",
|
|||
|
|
"", $this->HANDLES[$handleName]);
|
|||
|
|
|
|||
|
|
if (isset($this->HANDLES[$handleName])) {
|
|||
|
|
echo $this->HANDLES[$handleName];
|
|||
|
|
return TRUE;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
return FALSE;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// ************************************************************
|
|||
|
|
// Deletes all variables set with the addVars() method
|
|||
|
|
|
|||
|
|
function clearVars()
|
|||
|
|
{
|
|||
|
|
if (!empty($this->PARSEVARS)) {
|
|||
|
|
reset($this->PARSEVARS);
|
|||
|
|
while (list($ref, $val) = each ($this->PARSEVARS))
|
|||
|
|
unset($this->PARSEVARS[$ref]);
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// ************************************************************
|
|||
|
|
// Adds one or more variables.
|
|||
|
|
// You can pass one associative array with $varname=>$value pairs
|
|||
|
|
// or two strings ($varname, $value) to this function.
|
|||
|
|
|
|||
|
|
function addVars($varList, $varValue = "")
|
|||
|
|
{
|
|||
|
|
if (is_array($varList)) {
|
|||
|
|
reset($varList);
|
|||
|
|
while (list($varname, $value) = each($varList)) {
|
|||
|
|
// Replace curly braces
|
|||
|
|
if ($this->RPLBRACES == TRUE) {
|
|||
|
|
$value = preg_replace(Array("/(\{)/", "/(\})/"),
|
|||
|
|
Array("{", "}"),
|
|||
|
|
$value);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// Add/replace variable
|
|||
|
|
if (!preg_match("/[^0-9a-z\-\_]/i", $varname))
|
|||
|
|
$this->PARSEVARS[$varname] = $value;
|
|||
|
|
}
|
|||
|
|
} else {
|
|||
|
|
// Replace curly braces
|
|||
|
|
if ($this->RPLBRACES == TRUE) {
|
|||
|
|
$varValue = preg_replace(Array("/(\{)/", "/(\})/"),
|
|||
|
|
Array("{", "}"),
|
|||
|
|
$varValue);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// Add/replace variable
|
|||
|
|
if (!preg_match("/[^0-9a-z\-\_]/i", $varList))
|
|||
|
|
$this->PARSEVARS[$varList] = $varValue;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// ************************************************************
|
|||
|
|
// Returns a value set by the addVars() method
|
|||
|
|
|
|||
|
|
function getVar($varName = "")
|
|||
|
|
{
|
|||
|
|
if (empty($varName)) return FALSE;
|
|||
|
|
if (isset($this->PARSEVARS[$varName]))
|
|||
|
|
return $this->PARSEVARS[$varName];
|
|||
|
|
return FALSE;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// ************************************************************
|
|||
|
|
|
|||
|
|
} // End of class 'Template'
|
|||
|
|
|
|||
|
|
?>
|