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@@ -0,0 +1,922 @@
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+<?php
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+/**
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+* File MiniTemplator.class.php
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+* @package MiniTemplator
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+*/
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+
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+/**
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+* A compact template engine for HTML files.
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+*
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+* Requires PHP 4.0.4 or newer.
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+*
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+* <pre>
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+* Template syntax:
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+*
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+* Variables:
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+* ${VariableName}
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+*
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+* Blocks:
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+* <!-- $BeginBlock BlockName -->
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+* ... block content ...
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+* <!-- $EndBlock BlockName -->
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+*
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+* Include a subtemplate:
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+* <!-- $Include RelativeFileName -->
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+* </pre>
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+*
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+* <pre>
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+* General remarks:
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+* - Variable names and block names are case-insensitive.
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+* - The same variable may be used multiple times within a template.
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+* - Blocks can be nested.
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+* - Multiple blocks with the same name may occur within a template.
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+* </pre>
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+*
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+* <pre>
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+* Public methods:
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+* readTemplateFromFile - Reads the template from a file.
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+* setTemplateString - Assigns a new template string.
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+* setVariable - Sets a template variable.
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+* setVariableEsc - Sets a template variable to an escaped string value.
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+* variableExists - Checks whether a template variable exists.
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+* addBlock - Adds an instance of a template block.
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+* blockExists - Checks whether a block exists.
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+* reset - Clears all variables and blocks.
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+* generateOutput - Generates the HTML page and writes it to the PHP output stream.
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+* generateOutputToFile - Generates the HTML page and writes it to a file.
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+* generateOutputToString - Generates the HTML page and writes it to a string.
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+* </pre>
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+*
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+* Home page: {@link http://www.source-code.biz/MiniTemplator}<br>
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+* License: This module is released under the GNU/LGPL license ({@link http://www.gnu.org/licenses/lgpl.html}).<br>
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+* Copyright 2003: Christian d'Heureuse, Inventec Informatik AG, Switzerland. All rights reserved.<br>
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+* This product is provided "as is" without warranty of any kind.<br>
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+*
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+* Version history:<br>
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+* 2001-10-24 Christian d'Heureuse (chdh): VBasic version created.<br>
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+* 2002-01-26 Markus Angst: ported to PHP4.<br>
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+* 2003-04-07 chdh: changes to adjust to Java version.<br>
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+* 2003-07-08 chdh: Method variableExists added.
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+* Method setVariable changed to trigger an error when the variable does not exist.<br>
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+* 2004-04-07 chdh: Parameter isOptional added to method setVariable.
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+* Licensing changed from GPL to LGPL.<br>
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+* 2004-04-18 chdh: Method blockExists added.<br>
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+* 2004-10-28 chdh:<br>
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+* Method setVariableEsc added.<br>
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+* Multiple blocks with the same name may now occur within a template.<br>
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+* No error ("unknown command") is generated any more, if a HTML comment starts with "${".<br>
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+* 2004-11-06 chdh:<br>
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+* "$Include" command implemented.<br>
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+* 2004-11-20 chdh:<br>
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+* "$Include" command changed so that the command text is not copied to the output file.<br>
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+*/
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+
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+class MiniTemplator {
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+
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+//--- public member variables ---------------------------------------------------------------------------------------
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+
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+/**
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+* Base path for relative file names of subtemplates (for the $Include command).
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+* This path is prepended to the subtemplate file names. It must be set before
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+* readTemplateFromFile or setTemplateString.
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+* @access public
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+*/
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+var $subtemplateBasePath;
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+
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+//--- private member variables --------------------------------------------------------------------------------------
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+
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+/**#@+
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+* @access private
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+*/
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+
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+var $maxNestingLevel = 50; // maximum number of block nestings
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+var $maxInclTemplateSize = 1000000; // maximum length of template string when including subtemplates
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+var $template; // Template file data
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+var $varTab; // variables table, array index is variable no
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+ // Fields:
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+ // varName // variable name
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+ // varValue // variable value
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+var $varTabCnt; // no of entries used in VarTab
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+var $varNameToNoMap; // maps variable names to variable numbers
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+var $varRefTab; // variable references table
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+ // Contains an entry for each variable reference in the template. Ordered by TemplatePos.
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+ // Fields:
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+ // varNo // variable no
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+ // tPosBegin // template position of begin of variable reference
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+ // tPosEnd // template position of end of variable reference
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+ // blockNo // block no of the (innermost) block that contains this variable reference
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+ // blockVarNo // block variable no. Index into BlockInstTab.BlockVarTab
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+var $varRefTabCnt; // no of entries used in VarRefTab
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+var $blockTab; // Blocks table, array index is block no
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+ // Contains an entry for each block in the template. Ordered by TPosBegin.
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+ // Fields:
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+ // blockName // block name
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+ // nextWithSameName; // block no of next block with same name or -1 (blocks are backward linked in relation to template position)
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+ // tPosBegin // template position of begin of block
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+ // tPosContentsBegin // template pos of begin of block contents
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+ // tPosContentsEnd // template pos of end of block contents
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+ // tPosEnd // template position of end of block
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+ // nestingLevel // block nesting level
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+ // parentBlockNo // block no of parent block
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+ // definitionIsOpen // true while $BeginBlock processed but no $EndBlock
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+ // instances // number of instances of this block
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+ // firstBlockInstNo // block instance no of first instance of this block or -1
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+ // lastBlockInstNo // block instance no of last instance of this block or -1
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+ // currBlockInstNo // current block instance no, used during generation of output file
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+ // blockVarCnt // no of variables in block
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+ // blockVarNoToVarNoMap // maps block variable numbers to variable numbers
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+ // firstVarRefNo // variable reference no of first variable of this block or -1
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+var $blockTabCnt; // no of entries used in BlockTab
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+var $blockNameToNoMap; // maps block names to block numbers
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+var $openBlocksTab;
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+ // During parsing, this table contains the block numbers of the open parent blocks (nested outer blocks).
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+ // Indexed by the block nesting level.
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+var $blockInstTab; // block instances table
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+ // This table contains an entry for each block instance that has been added.
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+ // Indexed by BlockInstNo.
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+ // Fields:
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+ // blockNo // block number
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+ // instanceLevel // instance level of this block
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+ // InstanceLevel is an instance counter per block.
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+ // (In contrast to blockInstNo, which is an instance counter over the instances of all blocks)
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+ // parentInstLevel // instance level of parent block
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+ // nextBlockInstNo // pointer to next instance of this block or -1
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+ // Forward chain for instances of same block.
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+ // blockVarTab // block instance variables
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+var $blockInstTabCnt; // no of entries used in BlockInstTab
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+
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+var $currentNestingLevel; // Current block nesting level during parsing.
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+var $templateValid; // true if a valid template is prepared
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+var $outputMode; // 0 = to PHP output stream, 1 = to file, 2 = to string
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+var $outputFileHandle; // file handle during writing of output file
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+var $outputError; // true when an output error occurred
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+var $outputString; // string buffer for the generated HTML page
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+
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+/**#@-*/
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+
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+//--- constructor ---------------------------------------------------------------------------------------------------
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+
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+/**
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+* Constructs a MiniTemplator object.
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+* @access public
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+*/
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+function MiniTemplator() {
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+ $this->templateValid = false; }
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+
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+//--- template string handling --------------------------------------------------------------------------------------
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+
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+/**
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+* Reads the template from a file.
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+* @param string $fileName name of the file that contains the template.
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+* @return boolean true on success, false on error.
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+* @access public
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+*/
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+function readTemplateFromFile ($fileName) {
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+ if (!$this->readFileIntoString($fileName,$s)) {
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+ $this->triggerError ("Error while reading template file " . $fileName . ".");
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+ return false; }
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+ if (!$this->setTemplateString($s)) return false;
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+ return true; }
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+
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+/**
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+* Assigns a new template string.
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+* @param string $templateString contents of the template file.
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+* @return boolean true on success, false on error.
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+* @access public
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+*/
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+function setTemplateString ($templateString) {
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+ $this->templateValid = false;
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+ $this->template = $templateString;
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+ if (!$this->parseTemplate()) return false;
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+ $this->reset();
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+ $this->templateValid = true;
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+ return true; }
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+
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+/**
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+* Loads the template string for a subtemplate (used for the $Include command).
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+* @return boolean true on success, false on error.
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+* @access private
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+*/
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+function loadSubtemplate ($subtemplateName, &$s) {
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+ $subtemplateFileName = $this->combineFileSystemPath($this->subtemplateBasePath,$subtemplateName);
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+ if (!$this->readFileIntoString($subtemplateFileName,$s)) {
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+ $this->triggerError ("Error while reading subtemplate file " . $subtemplateFileName . ".");
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+ return false; }
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+ return true; }
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+
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+//--- template parsing ----------------------------------------------------------------------------------------------
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+
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+/**
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+* Parses the template.
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+* @return boolean true on success, false on error.
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+* @access private
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+*/
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+function parseTemplate() {
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+ $this->initParsing();
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+ $this->beginMainBlock();
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+ if (!$this->parseTemplateCommands()) return false;
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+ $this->endMainBlock();
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+ if (!$this->checkBlockDefinitionsComplete()) return false;
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+ if (!$this->parseTemplateVariables()) return false;
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+ $this->associateVariablesWithBlocks();
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+ return true; }
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+
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+/**
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+* @access private
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+*/
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+function initParsing() {
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+ $this->varTab = array();
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+ $this->varTabCnt = 0;
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+ $this->varNameToNoMap = array();
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+ $this->varRefTab = array();
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+ $this->varRefTabCnt = 0;
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+ $this->blockTab = array();
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+ $this->blockTabCnt = 0;
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+ $this->blockNameToNoMap = array();
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+ $this->openBlocksTab = array(); }
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+
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+/**
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+* Registers the main block.
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+* The main block is an implicitly defined block that covers the whole template.
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+* @access private
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+*/
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+function beginMainBlock() {
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+ $blockNo = 0;
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+ $this->registerBlock('@@InternalMainBlock@@', $blockNo);
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+ $bte =& $this->blockTab[$blockNo];
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+ $bte['tPosBegin'] = 0;
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+ $bte['tPosContentsBegin'] = 0;
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+ $bte['nestingLevel'] = 0;
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+ $bte['parentBlockNo'] = -1;
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+ $bte['definitionIsOpen'] = true;
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+ $this->openBlocksTab[0] = $blockNo;
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+ $this->currentNestingLevel = 1; }
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+
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+/**
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+* Completes the main block registration.
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+* @access private
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+*/
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+function endMainBlock() {
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+ $bte =& $this->blockTab[0];
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+ $bte['tPosContentsEnd'] = strlen($this->template);
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+ $bte['tPosEnd'] = strlen($this->template);
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+ $bte['definitionIsOpen'] = false;
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+ $this->currentNestingLevel -= 1; }
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+
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+/**
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+* Parses commands within the template in the format "<!-- $command parameters -->".
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+* @return boolean true on success, false on error.
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+* @access private
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+*/
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+function parseTemplateCommands() {
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+ $p = 0;
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+ while (true) {
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+ $p0 = strpos($this->template,'<!--',$p);
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+ if ($p0 === false) break;
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+ $p = strpos($this->template,'-->',$p0);
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+ if ($p === false) {
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+ $this->triggerError ("Invalid HTML comment in template at offset $p0.");
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+ return false; }
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+ $p += 3;
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+ $cmdL = substr($this->template,$p0+4,$p-$p0-7);
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+ if (!$this->processTemplateCommand($cmdL,$p0,$p,$resumeFromStart))
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+ return false;
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+ if ($resumeFromStart) $p = $p0; }
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+ return true; }
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+
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+/**
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+* @return boolean true on success, false on error.
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+* @access private
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+*/
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+function processTemplateCommand ($cmdL, $cmdTPosBegin, $cmdTPosEnd, &$resumeFromStart) {
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+ $resumeFromStart = false;
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+ $p = 0;
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+ $cmd = '';
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+ if (!$this->parseWord($cmdL,$p,$cmd)) return true;
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+ $parms = substr($cmdL,$p);
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+ switch (strtoupper($cmd)) {
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+ case '$BEGINBLOCK':
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+ if (!$this->processBeginBlockCmd($parms,$cmdTPosBegin,$cmdTPosEnd))
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+ return false;
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+ break;
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+ case '$ENDBLOCK':
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+ if (!$this->processEndBlockCmd($parms,$cmdTPosBegin,$cmdTPosEnd))
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+ return false;
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+ break;
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+ case '$INCLUDE':
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+ if (!$this->processincludeCmd($parms,$cmdTPosBegin,$cmdTPosEnd))
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+ return false;
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+ $resumeFromStart = true;
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+ break;
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+ default:
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+ if ($cmd{0} == '$' && !(strlen($cmd) >= 2 && $cmd{1} == '{')) {
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+ $this->triggerError ("Unknown command \"$cmd\" in template at offset $cmdTPosBegin.");
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+ return false; }}
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+ return true; }
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+
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+/**
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+* Processes the $BeginBlock command.
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+* @return boolean true on success, false on error.
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+* @access private
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+*/
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+function processBeginBlockCmd ($parms, $cmdTPosBegin, $cmdTPosEnd) {
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+ $p = 0;
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+ if (!$this->parseWord($parms,$p,$blockName)) {
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+ $this->triggerError ("Missing block name in \$BeginBlock command in template at offset $cmdTPosBegin.");
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+ return false; }
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+ if (trim(substr($parms,$p)) != '') {
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+ $this->triggerError ("Extra parameter in \$BeginBlock command in template at offset $cmdTPosBegin.");
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+ return false; }
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+ $this->registerBlock ($blockName, $blockNo);
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+ $btr =& $this->blockTab[$blockNo];
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+ $btr['tPosBegin'] = $cmdTPosBegin;
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+ $btr['tPosContentsBegin'] = $cmdTPosEnd;
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+ $btr['nestingLevel'] = $this->currentNestingLevel;
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+ $btr['parentBlockNo'] = $this->openBlocksTab[$this->currentNestingLevel-1];
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+ $this->openBlocksTab[$this->currentNestingLevel] = $blockNo;
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+ $this->currentNestingLevel += 1;
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+ if ($this->currentNestingLevel > $this->maxNestingLevel) {
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+ $trhis->triggerError ("Block nesting overflow in template at offset $cmdTPosBegin.");
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+ return false; }
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+ return true; }
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+
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+/**
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+* Processes the $EndBlock command.
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+* @return boolean true on success, false on error.
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+* @access private
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+*/
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+function processEndBlockCmd ($parms, $cmdTPosBegin, $cmdTPosEnd) {
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+ $p = 0;
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+ if (!$this->parseWord($parms,$p,$blockName)) {
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+ $this->triggerError ("Missing block name in \$EndBlock command in template at offset $cmdTPosBegin.");
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+ return false; }
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+ if (trim(substr($parms,$p)) != '') {
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+ $this->triggerError ("Extra parameter in \$EndBlock command in template at offset $cmdTPosBegin.");
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+ return false; }
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+ if (!$this->lookupBlockName($blockName,$blockNo)) {
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+ $this->triggerError ("Undefined block name \"$blockName\" in \$EndBlock command in template at offset $cmdTPosBegin.");
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+ return false; }
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+ $this->currentNestingLevel -= 1;
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+ $btr =& $this->blockTab[$blockNo];
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+ if (!$btr['definitionIsOpen']) {
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+ $this->triggerError ("Multiple \$EndBlock command for block \"$blockName\" in template at offset $cmdTPosBegin.");
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+ return false; }
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+ if ($btr['nestingLevel'] != $this->currentNestingLevel) {
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+ $this->triggerError ("Block nesting level mismatch at \$EndBlock command for block \"$blockName\" in template at offset $cmdTPosBegin.");
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+ return false; }
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+ $btr['tPosContentsEnd'] = $cmdTPosBegin;
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+ $btr['tPosEnd'] = $cmdTPosEnd;
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+ $btr['definitionIsOpen'] = false;
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+ return true; }
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+
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+/**
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+* @access private
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+*/
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+function registerBlock($blockName, &$blockNo) {
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+ $blockNo = $this->blockTabCnt++;
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+ $btr =& $this->blockTab[$blockNo];
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+ $btr = array();
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+ $btr['blockName'] = $blockName;
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+ if (!$this->lookupBlockName($blockName,$btr['nextWithSameName']))
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|
|
+ $btr['nextWithSameName'] = -1;
|
|
|
+ $btr['definitionIsOpen'] = true;
|
|
|
+ $btr['instances'] = 0;
|
|
|
+ $btr['firstBlockInstNo'] = -1;
|
|
|
+ $btr['lastBlockInstNo'] = -1;
|
|
|
+ $btr['blockVarCnt'] = 0;
|
|
|
+ $btr['firstVarRefNo'] = -1;
|
|
|
+ $btr['blockVarNoToVarNoMap'] = array();
|
|
|
+ $this->blockNameToNoMap[strtoupper($blockName)] = $blockNo; }
|
|
|
+
|
|
|
+/**
|
|
|
+* Checks that all block definitions are closed.
|
|
|
+* @return boolean true on success, false on error.
|
|
|
+* @access private
|
|
|
+*/
|
|
|
+function checkBlockDefinitionsComplete() {
|
|
|
+ for ($blockNo=0; $blockNo < $this->blockTabCnt; $blockNo++) {
|
|
|
+ $btr =& $this->blockTab[$blockNo];
|
|
|
+ if ($btr['definitionIsOpen']) {
|
|
|
+ $this->triggerError ("Missing \$EndBlock command in template for block " . $btr['blockName'] . ".");
|
|
|
+ return false; }}
|
|
|
+ if ($this->currentNestingLevel != 0) {
|
|
|
+ $this->triggerError ("Block nesting level error at end of template.");
|
|
|
+ return false; }
|
|
|
+ return true; }
|
|
|
+
|
|
|
+/**
|
|
|
+* Processes the $Include command.
|
|
|
+* @return boolean true on success, false on error.
|
|
|
+* @access private
|
|
|
+*/
|
|
|
+function processIncludeCmd ($parms, $cmdTPosBegin, $cmdTPosEnd) {
|
|
|
+ $p = 0;
|
|
|
+ if (!$this->parseWordOrQuotedString($parms,$p,$subtemplateName)) {
|
|
|
+ $this->triggerError ("Missing or invalid subtemplate name in \$Include command in template at offset $cmdTPosBegin.");
|
|
|
+ return false; }
|
|
|
+ if (trim(substr($parms,$p)) != '') {
|
|
|
+ $this->triggerError ("Extra parameter in \$include command in template at offset $cmdTPosBegin.");
|
|
|
+ return false; }
|
|
|
+ return $this->insertSubtemplate($subtemplateName,$cmdTPosBegin,$cmdTPosEnd); }
|
|
|
+
|
|
|
+/**
|
|
|
+* Processes the $Include command.
|
|
|
+* @return boolean true on success, false on error.
|
|
|
+* @access private
|
|
|
+*/
|
|
|
+function insertSubtemplate ($subtemplateName, $tPos1, $tPos2) {
|
|
|
+ if (strlen($this->template) > $this->maxInclTemplateSize) {
|
|
|
+ $this->triggerError ("Subtemplate include aborted because the internal template string is longer than $this->maxInclTemplateSize characters.");
|
|
|
+ return false; }
|
|
|
+ if (!$this->loadSubtemplate($subtemplateName,$subtemplate)) return false;
|
|
|
+ // (Copying the template to insert a subtemplate is a bit slow. In a future implementation of MiniTemplator,
|
|
|
+ // a table could be used that contains references to the string fragments.)
|
|
|
+ $this->template = substr($this->template,0,$tPos1) . $subtemplate . substr($this->template,$tPos2);
|
|
|
+ return true; }
|
|
|
+
|
|
|
+/**
|
|
|
+* Parses variable references within the template in the format "${VarName}".
|
|
|
+* @return boolean true on success, false on error.
|
|
|
+* @access private
|
|
|
+*/
|
|
|
+function parseTemplateVariables() {
|
|
|
+ $p = 0;
|
|
|
+ while (true) {
|
|
|
+ $p = strpos($this->template, '${', $p);
|
|
|
+ if ($p === false) break;
|
|
|
+ $p0 = $p;
|
|
|
+ $p = strpos($this->template, '}', $p);
|
|
|
+ if ($p === false) {
|
|
|
+ $this->triggerError ("Invalid variable reference in template at offset $p0.");
|
|
|
+ return false; }
|
|
|
+ $p += 1;
|
|
|
+ $varName = trim(substr($this->template, $p0+2, $p-$p0-3));
|
|
|
+ if (strlen($varName) == 0) {
|
|
|
+ $this->triggerError ("Empty variable name in template at offset $p0.");
|
|
|
+ return false; }
|
|
|
+ $this->registerVariableReference ($varName, $p0, $p); }
|
|
|
+ return true; }
|
|
|
+
|
|
|
+/**
|
|
|
+* @access private
|
|
|
+*/
|
|
|
+function registerVariableReference ($varName, $tPosBegin, $tPosEnd) {
|
|
|
+ if (!$this->lookupVariableName($varName,$varNo))
|
|
|
+ $this->registerVariable($varName,$varNo);
|
|
|
+ $varRefNo = $this->varRefTabCnt++;
|
|
|
+ $vrtr =& $this->varRefTab[$varRefNo];
|
|
|
+ $vrtr = array();
|
|
|
+ $vrtr['tPosBegin'] = $tPosBegin;
|
|
|
+ $vrtr['tPosEnd'] = $tPosEnd;
|
|
|
+ $vrtr['varNo'] = $varNo; }
|
|
|
+
|
|
|
+/**
|
|
|
+* @access private
|
|
|
+*/
|
|
|
+function registerVariable ($varName, &$varNo) {
|
|
|
+ $varNo = $this->varTabCnt++;
|
|
|
+ $vtr =& $this->varTab[$varNo];
|
|
|
+ $vtr = array();
|
|
|
+ $vtr['varName'] = $varName;
|
|
|
+ $vtr['varValue'] = '';
|
|
|
+ $this->varNameToNoMap[strtoupper($varName)] = $varNo; }
|
|
|
+
|
|
|
+/**
|
|
|
+* Associates variable references with blocks.
|
|
|
+* @access private
|
|
|
+*/
|
|
|
+function associateVariablesWithBlocks() {
|
|
|
+ $varRefNo = 0;
|
|
|
+ $activeBlockNo = 0;
|
|
|
+ $nextBlockNo = 1;
|
|
|
+ while ($varRefNo < $this->varRefTabCnt) {
|
|
|
+ $vrtr =& $this->varRefTab[$varRefNo];
|
|
|
+ $varRefTPos = $vrtr['tPosBegin'];
|
|
|
+ $varNo = $vrtr['varNo'];
|
|
|
+ if ($varRefTPos >= $this->blockTab[$activeBlockNo]['tPosEnd']) {
|
|
|
+ $activeBlockNo = $this->blockTab[$activeBlockNo]['parentBlockNo'];
|
|
|
+ continue; }
|
|
|
+ if ($nextBlockNo < $this->blockTabCnt) {
|
|
|
+ if ($varRefTPos >= $this->blockTab[$nextBlockNo]['tPosBegin']) {
|
|
|
+ $activeBlockNo = $nextBlockNo;
|
|
|
+ $nextBlockNo += 1;
|
|
|
+ continue; }}
|
|
|
+ $btr =& $this->blockTab[$activeBlockNo];
|
|
|
+ if ($varRefTPos < $btr['tPosBegin'])
|
|
|
+ $this->programLogicError(1);
|
|
|
+ $blockVarNo = $btr['blockVarCnt']++;
|
|
|
+ $btr['blockVarNoToVarNoMap'][$blockVarNo] = $varNo;
|
|
|
+ if ($btr['firstVarRefNo'] == -1)
|
|
|
+ $btr['firstVarRefNo'] = $varRefNo;
|
|
|
+ $vrtr['blockNo'] = $activeBlockNo;
|
|
|
+ $vrtr['blockVarNo'] = $blockVarNo;
|
|
|
+ $varRefNo += 1; }}
|
|
|
+
|
|
|
+//--- build up (template variables and blocks) ----------------------------------------------------------------------
|
|
|
+
|
|
|
+/**
|
|
|
+* Clears all variables and blocks.
|
|
|
+* This method can be used to produce another HTML page with the same
|
|
|
+* template. It is faster than creating another MiniTemplator object,
|
|
|
+* because the template does not have to be parsed again.
|
|
|
+* All variable values are cleared and all added block instances are deleted.
|
|
|
+* @access public
|
|
|
+*/
|
|
|
+function reset() {
|
|
|
+ for ($varNo=0; $varNo<$this->varTabCnt; $varNo++)
|
|
|
+ $this->varTab[$varNo]['varValue'] = '';
|
|
|
+ for ($blockNo=0; $blockNo<$this->blockTabCnt; $blockNo++) {
|
|
|
+ $btr =& $this->blockTab[$blockNo];
|
|
|
+ $btr['instances'] = 0;
|
|
|
+ $btr['firstBlockInstNo'] = -1;
|
|
|
+ $btr['lastBlockInstNo'] = -1; }
|
|
|
+ $this->blockInstTab = array();
|
|
|
+ $this->blockInstTabCnt = 0; }
|
|
|
+
|
|
|
+/**
|
|
|
+* Sets a template variable.
|
|
|
+* For variables that are used in blocks, the variable value
|
|
|
+* must be set before {@link addBlock} is called.
|
|
|
+* @param string $variableName the name of the variable to be set.
|
|
|
+* @param string $variableValue the new value of the variable.
|
|
|
+* @param boolean $isOptional Specifies whether an error should be
|
|
|
+* generated when the variable does not exist in the template. If
|
|
|
+* $isOptional is false and the variable does not exist, an error is
|
|
|
+* generated.
|
|
|
+* @return boolean true on success, or false on error (e.g. when no
|
|
|
+* variable with the specified name exists in the template and
|
|
|
+* $isOptional is false).
|
|
|
+* @access public
|
|
|
+*/
|
|
|
+function setVariable ($variableName, $variableValue, $isOptional=false) {
|
|
|
+ if (!$this->templateValid) {$this->triggerError ("Template not valid."); return false; }
|
|
|
+ if (!$this->lookupVariableName($variableName,$varNo)) {
|
|
|
+ if ($isOptional) return true;
|
|
|
+ $this->triggerError ("Variable \"$variableName\" not defined in template.");
|
|
|
+ return false; }
|
|
|
+ $this->varTab[$varNo]['varValue'] = $variableValue;
|
|
|
+ return true; }
|
|
|
+
|
|
|
+/**
|
|
|
+* Sets a template variable to an escaped string.
|
|
|
+* This method is identical to (@link setVariable), except that
|
|
|
+* the characters <, >, &, ' and " of variableValue are
|
|
|
+* replaced by their corresponding HTML/XML character entity codes.
|
|
|
+* For variables that are used in blocks, the variable value
|
|
|
+* must be set before {@link addBlock} is called.
|
|
|
+* @param string $variableName the name of the variable to be set.
|
|
|
+* @param string $variableValue the new value of the variable. Special HTML/XML characters are escaped.
|
|
|
+* @param boolean $isOptional Specifies whether an error should be
|
|
|
+* generated when the variable does not exist in the template. If
|
|
|
+* $isOptional is false and the variable does not exist, an error is
|
|
|
+* generated.
|
|
|
+* @return boolean true on success, or false on error (e.g. when no
|
|
|
+* variable with the specified name exists in the template and
|
|
|
+* $isOptional is false).
|
|
|
+* @access public
|
|
|
+*/
|
|
|
+function setVariableEsc ($variableName, $variableValue, $isOptional=false) {
|
|
|
+ return $this->setVariable($variableName,htmlspecialchars($variableValue,ENT_QUOTES),$isOptional); }
|
|
|
+
|
|
|
+/**
|
|
|
+* Checks whether a variable with the specified name exists within the template.
|
|
|
+* @param string $variableName the name of the variable.
|
|
|
+* @return boolean true if the variable exists, or false when no
|
|
|
+* variable with the specified name exists in the template.
|
|
|
+* @access public
|
|
|
+*/
|
|
|
+function variableExists ($variableName) {
|
|
|
+ if (!$this->templateValid) {$this->triggerError ("Template not valid."); return false; }
|
|
|
+ return $this->lookupVariableName($variableName,$varNo); }
|
|
|
+
|
|
|
+/**
|
|
|
+* Adds an instance of a template block.
|
|
|
+* If the block contains variables, these variables must be set
|
|
|
+* before the block is added.
|
|
|
+* If the block contains subblocks (nested blocks), the subblocks
|
|
|
+* must be added before this block is added.
|
|
|
+* If multiple blocks exist with the specified name, an instance
|
|
|
+* is added for each block occurence.
|
|
|
+* @param string blockName the name of the block to be added.
|
|
|
+* @return boolean true on success, false on error (e.g. when no
|
|
|
+* block with the specified name exists in the template).
|
|
|
+* @access public
|
|
|
+*/
|
|
|
+function addBlock($blockName) {
|
|
|
+ if (!$this->templateValid) {$this->triggerError ("Template not valid."); return false; }
|
|
|
+ if (!$this->lookupBlockName($blockName,$blockNo)) {
|
|
|
+ $this->triggerError ("Block \"$blockName\" not defined in template.");
|
|
|
+ return false; }
|
|
|
+ while ($blockNo != -1) {
|
|
|
+ $this->addBlockByNo($blockNo);
|
|
|
+ $blockNo = $this->blockTab[$blockNo]['nextWithSameName']; }
|
|
|
+ return true; }
|
|
|
+
|
|
|
+/**
|
|
|
+* @access private
|
|
|
+*/
|
|
|
+function addBlockByNo ($blockNo) {
|
|
|
+ $btr =& $this->blockTab[$blockNo];
|
|
|
+ $this->registerBlockInstance ($blockInstNo);
|
|
|
+ $bitr =& $this->blockInstTab[$blockInstNo];
|
|
|
+ if ($btr['firstBlockInstNo'] == -1)
|
|
|
+ $btr['firstBlockInstNo'] = $blockInstNo;
|
|
|
+ if ($btr['lastBlockInstNo'] != -1)
|
|
|
+ $this->blockInstTab[$btr['lastBlockInstNo']]['nextBlockInstNo'] = $blockInstNo;
|
|
|
+ // set forward pointer of chain
|
|
|
+ $btr['lastBlockInstNo'] = $blockInstNo;
|
|
|
+ $parentBlockNo = $btr['parentBlockNo'];
|
|
|
+ $blockVarCnt = $btr['blockVarCnt'];
|
|
|
+ $bitr['blockNo'] = $blockNo;
|
|
|
+ $bitr['instanceLevel'] = $btr['instances']++;
|
|
|
+ if ($parentBlockNo == -1)
|
|
|
+ $bitr['parentInstLevel'] = -1;
|
|
|
+ else
|
|
|
+ $bitr['parentInstLevel'] = $this->blockTab[$parentBlockNo]['instances'];
|
|
|
+ $bitr['nextBlockInstNo'] = -1;
|
|
|
+ $bitr['blockVarTab'] = array();
|
|
|
+ // copy instance variables for this block
|
|
|
+ for ($blockVarNo=0; $blockVarNo<$blockVarCnt; $blockVarNo++) {
|
|
|
+ $varNo = $btr['blockVarNoToVarNoMap'][$blockVarNo];
|
|
|
+ $bitr['blockVarTab'][$blockVarNo] = $this->varTab[$varNo]['varValue']; }}
|
|
|
+
|
|
|
+/**
|
|
|
+* @access private
|
|
|
+*/
|
|
|
+function registerBlockInstance (&$blockInstNo) {
|
|
|
+ $blockInstNo = $this->blockInstTabCnt++; }
|
|
|
+
|
|
|
+/**
|
|
|
+* Checks whether a block with the specified name exists within the template.
|
|
|
+* @param string $blockName the name of the block.
|
|
|
+* @return boolean true if the block exists, or false when no
|
|
|
+* block with the specified name exists in the template.
|
|
|
+* @access public
|
|
|
+*/
|
|
|
+function blockExists ($blockName) {
|
|
|
+ if (!$this->templateValid) {$this->triggerError ("Template not valid."); return false; }
|
|
|
+ return $this->lookupBlockName($blockName,$blockNo); }
|
|
|
+
|
|
|
+//--- output generation ---------------------------------------------------------------------------------------------
|
|
|
+
|
|
|
+/**
|
|
|
+* Generates the HTML page and writes it to the PHP output stream.
|
|
|
+* @return boolean true on success, false on error.
|
|
|
+* @access public
|
|
|
+*/
|
|
|
+function generateOutput () {
|
|
|
+ $this->outputMode = 0;
|
|
|
+ if (!$this->generateOutputPage()) return false;
|
|
|
+ return true; }
|
|
|
+
|
|
|
+/**
|
|
|
+* Generates the HTML page and writes it to a file.
|
|
|
+* @param string $fileName name of the output file.
|
|
|
+* @return boolean true on success, false on error.
|
|
|
+* @access public
|
|
|
+*/
|
|
|
+function generateOutputToFile ($fileName) {
|
|
|
+ $fh = fopen($fileName,"wb");
|
|
|
+ if ($fh === false) return false;
|
|
|
+ $this->outputMode = 1;
|
|
|
+ $this->outputFileHandle = $fh;
|
|
|
+ $ok = $this->generateOutputPage();
|
|
|
+ fclose ($fh);
|
|
|
+ return $ok; }
|
|
|
+
|
|
|
+/**
|
|
|
+* Generates the HTML page and writes it to a string.
|
|
|
+* @param string $outputString variable that receives
|
|
|
+* the contents of the generated HTML page.
|
|
|
+* @return boolean true on success, false on error.
|
|
|
+* @access public
|
|
|
+*/
|
|
|
+function generateOutputToString (&$outputString) {
|
|
|
+ $outputString = "Error";
|
|
|
+ $this->outputMode = 2;
|
|
|
+ $this->outputString = "";
|
|
|
+ if (!$this->generateOutputPage()) return false;
|
|
|
+ $outputString = $this->outputString;
|
|
|
+ return true; }
|
|
|
+
|
|
|
+/**
|
|
|
+* @access private
|
|
|
+* @return boolean true on success, false on error.
|
|
|
+*/
|
|
|
+function generateOutputPage() {
|
|
|
+ if (!$this->templateValid) {$this->triggerError ("Template not valid."); return false; }
|
|
|
+ if ($this->blockTab[0]['instances'] == 0)
|
|
|
+ $this->addBlockByNo (0); // add main block
|
|
|
+ for ($blockNo=0; $blockNo < $this->blockTabCnt; $blockNo++) {
|
|
|
+ $btr =& $this->blockTab[$blockNo];
|
|
|
+ $btr['currBlockInstNo'] = $btr['firstBlockInstNo']; }
|
|
|
+ $this->outputError = false;
|
|
|
+ $this->writeBlockInstances (0, -1);
|
|
|
+ if ($this->outputError) return false;
|
|
|
+ return true; }
|
|
|
+
|
|
|
+/**
|
|
|
+* Writes all instances of a block that are contained within a specific
|
|
|
+* parent block instance.
|
|
|
+* Called recursively.
|
|
|
+* @access private
|
|
|
+*/
|
|
|
+function writeBlockInstances ($blockNo, $parentInstLevel) {
|
|
|
+ $btr =& $this->blockTab[$blockNo];
|
|
|
+ while (!$this->outputError) {
|
|
|
+ $blockInstNo = $btr['currBlockInstNo'];
|
|
|
+ if ($blockInstNo == -1) break;
|
|
|
+ $bitr =& $this->blockInstTab[$blockInstNo];
|
|
|
+ if ($bitr['parentInstLevel'] < $parentInstLevel)
|
|
|
+ $this->programLogicError (2);
|
|
|
+ if ($bitr['parentInstLevel'] > $parentInstLevel) break;
|
|
|
+ $this->writeBlockInstance ($blockInstNo);
|
|
|
+ $btr['currBlockInstNo'] = $bitr['nextBlockInstNo']; }}
|
|
|
+
|
|
|
+/**
|
|
|
+* @access private
|
|
|
+*/
|
|
|
+function writeBlockInstance($blockInstNo) {
|
|
|
+ $bitr =& $this->blockInstTab[$blockInstNo];
|
|
|
+ $blockNo = $bitr['blockNo'];
|
|
|
+ $btr =& $this->blockTab[$blockNo];
|
|
|
+ $tPos = $btr['tPosContentsBegin'];
|
|
|
+ $subBlockNo = $blockNo + 1;
|
|
|
+ $varRefNo = $btr['firstVarRefNo'];
|
|
|
+ while (!$this->outputError) {
|
|
|
+ $tPos2 = $btr['tPosContentsEnd'];
|
|
|
+ $kind = 0; // assume end-of-block
|
|
|
+ if ($varRefNo != -1 && $varRefNo < $this->varRefTabCnt) { // check for variable reference
|
|
|
+ $vrtr =& $this->varRefTab[$varRefNo];
|
|
|
+ if ($vrtr['tPosBegin'] < $tPos) {
|
|
|
+ $varRefNo += 1;
|
|
|
+ continue; }
|
|
|
+ if ($vrtr['tPosBegin'] < $tPos2) {
|
|
|
+ $tPos2 = $vrtr['tPosBegin'];
|
|
|
+ $kind = 1; }}
|
|
|
+ if ($subBlockNo < $this->blockTabCnt) { // check for subblock
|
|
|
+ $subBtr =& $this->blockTab[$subBlockNo];
|
|
|
+ if ($subBtr['tPosBegin'] < $tPos) {
|
|
|
+ $subBlockNo += 1;
|
|
|
+ continue; }
|
|
|
+ if ($subBtr['tPosBegin'] < $tPos2) {
|
|
|
+ $tPos2 = $subBtr['tPosBegin'];
|
|
|
+ $kind = 2; }}
|
|
|
+ if ($tPos2 > $tPos)
|
|
|
+ $this->writeString (substr($this->template,$tPos,$tPos2-$tPos));
|
|
|
+ switch ($kind) {
|
|
|
+ case 0: // end of block
|
|
|
+ return;
|
|
|
+ case 1: // variable
|
|
|
+ $vrtr =& $this->varRefTab[$varRefNo];
|
|
|
+ if ($vrtr['blockNo'] != $blockNo)
|
|
|
+ $this->programLogicError (4);
|
|
|
+ $variableValue = $bitr['blockVarTab'][$vrtr['blockVarNo']];
|
|
|
+ $this->writeString ($variableValue);
|
|
|
+ $tPos = $vrtr['tPosEnd'];
|
|
|
+ $varRefNo += 1;
|
|
|
+ break;
|
|
|
+ case 2: // sub block
|
|
|
+ $subBtr =& $this->blockTab[$subBlockNo];
|
|
|
+ if ($subBtr['parentBlockNo'] != $blockNo)
|
|
|
+ $this->programLogicError (3);
|
|
|
+ $this->writeBlockInstances ($subBlockNo, $bitr['instanceLevel']); // recursive call
|
|
|
+ $tPos = $subBtr['tPosEnd'];
|
|
|
+ $subBlockNo += 1;
|
|
|
+ break; }}}
|
|
|
+
|
|
|
+/**
|
|
|
+* @access private
|
|
|
+*/
|
|
|
+function writeString ($s) {
|
|
|
+ if ($this->outputError) return;
|
|
|
+ switch ($this->outputMode) {
|
|
|
+ case 0: // output to PHP output stream
|
|
|
+ if (!print($s))
|
|
|
+ $this->outputError = true;
|
|
|
+ break;
|
|
|
+ case 1: // output to file
|
|
|
+ $rc = fwrite($this->outputFileHandle, $s);
|
|
|
+ if ($rc === false) $this->outputError = true;
|
|
|
+ break;
|
|
|
+ case 2: // output to string
|
|
|
+ $this->outputString .= $s;
|
|
|
+ break; }}
|
|
|
+
|
|
|
+//--- name lookup routines ------------------------------------------------------------------------------------------
|
|
|
+
|
|
|
+/**
|
|
|
+* Maps variable name to variable number.
|
|
|
+* @return boolean true on success, false if the variable is not found.
|
|
|
+* @access private
|
|
|
+*/
|
|
|
+function lookupVariableName ($varName, &$varNo) {
|
|
|
+ $x =& $this->varNameToNoMap[strtoupper($varName)];
|
|
|
+ if (!isset($x)) return false;
|
|
|
+ $varNo = $x;
|
|
|
+ return true; }
|
|
|
+
|
|
|
+/**
|
|
|
+* Maps block name to block number.
|
|
|
+* If there are multiple blocks with the same name, the block number of the last
|
|
|
+* registered block with that name is returned.
|
|
|
+* @return boolean true on success, false when the block is not found.
|
|
|
+* @access private
|
|
|
+*/
|
|
|
+function lookupBlockName ($blockName, &$blockNo) {
|
|
|
+ $x =& $this->blockNameToNoMap[strtoupper($blockName)];
|
|
|
+ if (!isset($x)) return false;
|
|
|
+ $blockNo = $x;
|
|
|
+ return true; }
|
|
|
+
|
|
|
+//--- general utility routines -----------------------------------------------------------------------------------------
|
|
|
+
|
|
|
+/**
|
|
|
+* Reads a file into a string.
|
|
|
+* @return boolean true on success, false on error.
|
|
|
+* @access private
|
|
|
+*/
|
|
|
+function readFileIntoString ($fileName, &$s) {
|
|
|
+ if (function_exists('version_compare') && version_compare(phpversion(),"4.3.0",">=")) {
|
|
|
+ $s = file_get_contents($fileName);
|
|
|
+ if ($s === false) return false;
|
|
|
+ return true; }
|
|
|
+ $fh = fopen($fileName,"rb");
|
|
|
+ if ($fh === false) return false;
|
|
|
+ $fileSize = filesize($fileName);
|
|
|
+ if ($fileSize === false) {close ($fh); return false; }
|
|
|
+ $s = fread($fh,$fileSize);
|
|
|
+ fclose ($fh);
|
|
|
+ if (strlen($s) != $fileSize) return false;
|
|
|
+ return true; }
|
|
|
+
|
|
|
+/**
|
|
|
+* @access private
|
|
|
+* @return boolean true on success, false when the end of the string is reached.
|
|
|
+*/
|
|
|
+function parseWord ($s, &$p, &$w) {
|
|
|
+ $sLen = strlen($s);
|
|
|
+ while ($p < $sLen && ord($s{$p}) <= 32) $p++;
|
|
|
+ if ($p >= $sLen) return false;
|
|
|
+ $p0 = $p;
|
|
|
+ while ($p < $sLen && ord($s{$p}) > 32) $p++;
|
|
|
+ $w = substr($s, $p0, $p - $p0);
|
|
|
+ return true; }
|
|
|
+
|
|
|
+/**
|
|
|
+* @access private
|
|
|
+* @return boolean true on success, false on error.
|
|
|
+*/
|
|
|
+function parseQuotedString ($s, &$p, &$w) {
|
|
|
+ $sLen = strlen($s);
|
|
|
+ while ($p < $sLen && ord($s{$p}) <= 32) $p++;
|
|
|
+ if ($p >= $sLen) return false;
|
|
|
+ if (substr($s,$p,1) != '"') return false;
|
|
|
+ $p++; $p0 = $p;
|
|
|
+ while ($p < $sLen && $s{$p} != '"') $p++;
|
|
|
+ if ($p >= $sLen) return false;
|
|
|
+ $w = substr($s, $p0, $p - $p0);
|
|
|
+ $p++;
|
|
|
+ return true; }
|
|
|
+
|
|
|
+/**
|
|
|
+* @access private
|
|
|
+* @return boolean true on success, false on error.
|
|
|
+*/
|
|
|
+function parseWordOrQuotedString ($s, &$p, &$w) {
|
|
|
+ $sLen = strlen($s);
|
|
|
+ while ($p < $sLen && ord($s{$p}) <= 32) $p++;
|
|
|
+ if ($p >= $sLen) return false;
|
|
|
+ if (substr($s,$p,1) == '"')
|
|
|
+ return $this->parseQuotedString($s,$p,$w);
|
|
|
+ else
|
|
|
+ return $this->parseWord($s,$p,$w); }
|
|
|
+
|
|
|
+/**
|
|
|
+* Combine two file system paths.
|
|
|
+* @access private
|
|
|
+*/
|
|
|
+function combineFileSystemPath ($path1, $path2) {
|
|
|
+ if ($path1 == '' || $path2 == '') return $path2;
|
|
|
+ $s = $path1;
|
|
|
+ if (substr($s,-1) != '\\' && substr($s,-1) != '/') $s = $s . "/";
|
|
|
+ if (substr($path2,0,1) == '\\' || substr($path2,0,1) == '/')
|
|
|
+ $s = $s . substr($path2,1);
|
|
|
+ else
|
|
|
+ $s = $s . $path2;
|
|
|
+ return $s; }
|
|
|
+
|
|
|
+/**
|
|
|
+* @access private
|
|
|
+*/
|
|
|
+function triggerError ($msg) {
|
|
|
+ trigger_error ("MiniTemplator error: $msg", E_USER_ERROR); }
|
|
|
+
|
|
|
+/**
|
|
|
+* @access private
|
|
|
+*/
|
|
|
+function programLogicError ($errorId) {
|
|
|
+ die ("MiniTemplator: Program logic error $errorId.\n"); }
|
|
|
+
|
|
|
+}
|
|
|
+?>
|
Andrew Dolgov