class.template.php

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<?php
define("T_BYFILE",              0);
define("T_BYVAR",               1);
define("TP_ROOTBLOCK",    '_ROOT');
class TemplatePowerParser
{
  var $tpl_base;             
  var $tpl_include;           
  var $tpl_count;
  var $parent   = Array();   
  var $defBlock = Array();
  var $rootBlockName;
  var $ignore_stack;
  var $version;
   function TemplatePowerParser( $tpl_file, $type )
   {
       $this->version        = '3.0.2';

       $this->tpl_base       = Array( $tpl_file, $type );
       $this->tpl_count      = 0;
	     $this->ignore_stack   = Array( false );
   }
   function __errorAlert( $message )
   {
       print( '<br>'. $message .'<br>'."\r\n");
   }
   function __prepare()
   {
       $this->defBlock[ TP_ROOTBLOCK ] = Array();
       $tplvar = $this->__prepareTemplate( $this->tpl_base[0], $this->tpl_base[1]  );

       $initdev["varrow"]  = 0;
       $initdev["coderow"] = 0;
       $initdev["index"]   = 0;
       $initdev["ignore"]  = false;

       $this->__parseTemplate( $tplvar, TP_ROOTBLOCK, $initdev );
       $this->__cleanUp();
   }
    function __cleanUp()
    {
        for( $i=0; $i <= $this->tpl_count; $i++ )
        {
            $tplvar = 'tpl_rawContent'. $i;
            unset( $this->{$tplvar} );
        }
    }
    function __prepareTemplate( $tpl_file, $type )
    {
        $tplvar = 'tpl_rawContent'. $this->tpl_count;
        if( $type == T_BYVAR )
        {
            $this->{$tplvar}["content"] = preg_split("/\n/", $tpl_file, -1, PREG_SPLIT_DELIM_CAPTURE);
        }
        else
        {
            $this->{$tplvar}["content"] = @file( $tpl_file ) or
                die( $this->__errorAlert('TemplatePower Error: Couldn\'t open [ '. $tpl_file .' ]!'));
        }
        $this->{$tplvar}["size"]    = sizeof( $this->{$tplvar}["content"] );
        $this->tpl_count++;
        return $tplvar;
    }
    function __parseTemplate( $tplvar, $blockname, $initdev )
    {
        $coderow = $initdev["coderow"];
        $varrow  = $initdev["varrow"];
        $index   = $initdev["index"];
        $ignore  = $initdev["ignore"];
        while( $index < $this->{$tplvar}["size"] )
        {
            if ( preg_match('/<!--[ ]?(START|END) IGNORE -->/', $this->{$tplvar}["content"][$index], $ignreg) )
            {
                if( $ignreg[1] == 'START')
                {
                    //$ignore = true;
					          array_push( $this->ignore_stack, true );
                }
                else
                {
                    //$ignore = false;
					          array_pop( $this->ignore_stack );
                }
            }
            else
            {
                if( !end( $this->ignore_stack ) )
                {
                    if( preg_match('/<!--[ ]?(START|END|INCLUDE|INCLUDESCRIPT|REUSE) BLOCK : (.+)-->/', $this->{$tplvar}["content"][$index], $regs))
                    {
                       //remove trailing and leading spaces
                        $regs[2] = trim( $regs[2] );

                        if( $regs[1] == 'INCLUDE')
                        {
                            $include_defined = true;

                           //check if the include file is assigned
                            if( isset( $this->tpl_include[ $regs[2] ]) )
                            {
                                $tpl_file = $this->tpl_include[ $regs[2] ][0];
                                $type   = $this->tpl_include[ $regs[2] ][1];
                            }
                            else
                            if (file_exists( $regs[2] ))    //check if defined as constant in template
                            {
                                $tpl_file = $regs[2];
                                $type     = T_BYFILE;
                            }
                            else
                            {
                                $include_defined = false;
                            }

                            if( $include_defined )
                            {
                               //initialize startvalues for recursive call
                                $initdev["varrow"]  = $varrow;
                                $initdev["coderow"] = $coderow;
                                $initdev["index"]   = 0;
                                $initdev["ignore"]  = false;

                                $tplvar2 = $this->__prepareTemplate( $tpl_file, $type );
                                $initdev = $this->__parseTemplate( $tplvar2, $blockname, $initdev );

                                $coderow = $initdev["coderow"];
                                $varrow  = $initdev["varrow"];
                            }
                        }
                        else
                        if( $regs[1] == 'INCLUDESCRIPT' )
                        {
                            $include_defined = true;
							
                           //check if the includescript file is assigned by the assignInclude function
                            if( isset( $this->tpl_include[ $regs[2] ]) )
                            {
                                $include_file = $this->tpl_include[ $regs[2] ][0];
								                $type         = $this->tpl_include[ $regs[2] ][1];
                            }
                            else
                            if (file_exists( $regs[2] ))    //check if defined as constant in template
                            {
                                $include_file = $regs[2];
								                $type         = T_BYFILE;
                            }
                            else
                            {
                                $include_defined = false;
                            }

                            if( $include_defined )
                            {
                                ob_start();
                                
								                if( $type == T_BYFILE )
								                {
                                    if( !@include_once( $include_file ) )
                                    {
                                        $this->__errorAlert( 'TemplatePower Error: Couldn\'t include script [ '. $include_file .' ]!' );
										                    exit();
                                    }
								                }
								                else
								                {
								                    eval( "?>" . $include_file );
								                }

                                $this->defBlock[$blockname]["_C:$coderow"] = ob_get_contents();
                                $coderow++;

                                ob_end_clean();
                            }
                        }
                        else
                        if( $regs[1] == 'REUSE' )
                        {
                           //do match for 'AS'
                            if (preg_match('/(.+) AS (.+)/', $regs[2], $reuse_regs))
                            {
                                $originalbname = trim( $reuse_regs[1] );
                                $copybname     = trim( $reuse_regs[2] );

                               //test if original block exist
                                if (isset( $this->defBlock[ $originalbname ] ))
                                {
                                   //copy block
                                    $this->defBlock[ $copybname ] = $this->defBlock[ $originalbname ];

                                   //tell the parent that he has a child block
                                    $this->defBlock[ $blockname ]["_B:". $copybname ] = '';

                                   //create index and parent info
                                    $this->index[ $copybname ]  = 0;
                                    $this->parent[ $copybname ] = $blockname;
                                }
                                else
                                {
                                    $this->__errorAlert('TemplatePower Error: Can\'t find block \''. $originalbname .'\' to REUSE as \''. $copybname .'\'');
                                }
                            }
                            else
                            {
                               //so it isn't a correct REUSE tag, save as code
                                $this->defBlock[$blockname]["_C:$coderow"] = $this->{$tplvar}["content"][$index];
                                $coderow++;
                            }
                        }
                        else
                        {
                            if( $regs[2] == $blockname )     //is it the end of a block
                            {
                                break;
                            }
                            else                             //its the start of a block
                            {
                               //make a child block and tell the parent that he has a child
                                $this->defBlock[ $regs[2] ] = Array();
                                $this->defBlock[ $blockname ]["_B:". $regs[2]] = '';

                               //set some vars that we need for the assign functions etc.
                                $this->index[ $regs[2] ]  = 0;
                                $this->parent[ $regs[2] ] = $blockname;

                               //prepare for the recursive call
                                $index++;
                                $initdev["varrow"]  = 0;
                                $initdev["coderow"] = 0;
                                $initdev["index"]   = $index;
                                $initdev["ignore"]  = false;

                                $initdev = $this->__parseTemplate( $tplvar, $regs[2], $initdev );

                                $index = $initdev["index"];
                            }
                        }
                    }
                    else                                                        //is it code and/or var(s)
                    {
                       //explode current template line on the curly bracket '{'
                        $sstr = explode( '{', $this->{$tplvar}["content"][$index] );
                        
						            reset( $sstr );

                        if (current($sstr) != '')
                        {
                           //the template didn't start with a '{',
                           //so the first element of the array $sstr is just code
                            $this->defBlock[$blockname]["_C:$coderow"] = current( $sstr );
                            $coderow++;
                        }

                        while (next($sstr))
                        {
                           //find the position of the end curly bracket '}'
                            $pos = strpos( current($sstr), "}" );

                            if ( ($pos !== false) && ($pos > 0) )
                            {
                              //a curly bracket '}' is found
                              //and at least on position 1, to eliminate '{}'

                              //note: position 1 taken without '{', because we did explode on '{'

                                $strlength = strlen( current($sstr) );
                                $varname   = substr( current($sstr), 0, $pos );

                                if (strstr( $varname, ' ' ))
                                {
                                   //the varname contains one or more spaces
                                   //so, it isn't a variable, save as code
                                    $this->defBlock[$blockname]["_C:$coderow"] = '{'. current( $sstr );
                                    $coderow++;
                                }
                                else
                                {
                                   //save the variable
                                    $this->defBlock[$blockname]["_V:$varrow" ] = $varname;
                                    $varrow++;

                                   //is there some code after the varname left?
                                    if( ($pos + 1) != $strlength )
                                    {
                                       //yes, save that code
                                        $this->defBlock[$blockname]["_C:$coderow"] = substr( current( $sstr ), ($pos + 1), ($strlength - ($pos + 1)) );
                                        $coderow++;
                                    }
                                }
                            }
                            else