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iTemplate
by: Igor Mladenovic
|
March 27, 2002
Version: 1.02
Type: Class
Category: HTTP
License: GNU General Public License
Description: iTemplate is PHP class for dynamic creating web pages. You can simple and very fast crate parts of template whose have to be in loop, replace values from template, and include another template file...
<?
/********************************************/
// iTemplate 1.0 Class for PHP 4 /
// /
// Author : Igor Mladenovic /
// mligor@zimco.com /
// /
// version 1.02 Februar 26. 2002 /
/********************************************/
/**********************************************************************
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*************************************************************************/
//define(TEMPLATE_SUBBLOCK,0); // blok je sub blok, a ne poseban fajl
//define(TEMPLATE_FILE,1); // iscitaj blok iz posebnog fajla
// flags for defineBlock() function
define("BLOCK_HEADEREXISTS", 1);
define("BLOCK_HEADEREXIST", 1);
define("BLOCK_FOOTEREXISTS", 2);
define("BLOCK_FOOTEREXIST", 2);
define("BLOCK_DUMMYEXISTS", 4); // postoje dummy podaci posle bloka (trebaju da se obrisu, sluze samo za dizajnere)
define("BLOCK_DUMMYEXIST", 4);
// flags for addValue() function
define("ASSIGN_RECURSIVE",1); // zamenjuj promenljive rekurzivno u svim childovima
define("_MAIN_BLOCK_NAME_",'_MAIN_BLOCK_NAME_'); // main block name (for internal)
define("ITEMPLATE_DISPLAY_ERRORS",true);
// error messages
define("FILE_NOTEXISTS","File %s doesn't exists");
define("WRONG_TEMPLATE_BLOCK","Wrong template block : %s");
// global functions and variables;
$tplStatistic = array('replacements' => 0, 'blocks' => 0, 'assigments' => 0, 'block replacements'=>0, 'input size'=>0, 'output size'=>0);
function tplError($type, $param1 = '', $param2 ='')
{
$txtMessage = $$type;
if ($txtMessage == '') $txtMessage = $type;
if (ITEMPLATE_DISPLAY_ERRORS) printf("Template ERROR : <i><font color=red>" . $txtMessage . "</font></i> !!<br>",$param1,$param2);
$ErrorMessage = sprintf($txtMessage ,$param1,$param2);
return $ErrorMessage;
}
function setStatistic($type,$value,$max = false)
{
global $tplStatistic;
if ($max && $tplStatistic[$type]>$value )
{
$tplStatistic[$type] = $value;
}
else
{
$tplStatistic[$type] += $value;
}
}
function printStatistic()
{
global $tplStatistic;
while (list($key,$value) = each($tplStatistic))
{
echo "$key = $value<br>\n";
}
}
/******************************************/
// class iBlock //
/******************************************/
class iBlock
{
var $name;
var $message;
var $parent;
var $output = "";
var $text;
var $type;
var $vars = array();
var $vars_rec = array();
var $childs = array();
var $isIncluded = false;
var $LastError;
function iBlock($name)
{
$this->name = $name;
}
function init()
{
$this->getBlockFromParent();
}
// create new blok child
function block($name, $type = 0)
{
$this->childs[$name] = new iBlock($name);
$this->childs[$name]->type = $type;
$this->childs[$name]->parent = &$this;
$this->childs[$name]->init();
setStatistic('blocks',1);
return $this->childs[$name];
}
// dodeljuje vrednost nekoj variabli u bloku
function assign($key, &$value, $assignType = -1 )
{
if (is_object($value) && strtolower(get_class($value))=="itemplate")
{
$blockKey = "TEMPLATE_" . $key;
$postfix = 1;
while (isset($this->childs[$blockKey . "_" . (string)$postfix])) $postfix++;
// while (array_key_exists($blockKey . "_" . (string)$postfix, $this->childs))
$blockKey .= "_" . (string)$postfix;
$this->text = preg_replace("/\{$key\}/ims","{" . $blockKey . "}{" . $key. "}",$this->text);
$newBlock = &$this->block($blockKey);
$this->childs[$blockKey] = &$value;
$this->childs[$blockKey]->parent = $newBlock->parent;
$this->childs[$blockKey]->name = $newBlock->name;
$this->childs[$blockKey]->type = $newBlock->type;
$this->childs[$blockKey]->isIncluded = true;
// add variable for replacing original block name
$this->vars[$key] = new iAssignment($key,"");
//$this->childs[$key]->add();
return;
}
if (is_array($key) || is_object($key))
{
$this->assignHash($key,$value,$assignType);
}
else
{
if ($assignType == ASSIGN_RECURSIVE)
if (!(is_array($value) && ($this->vars_rec[$key]->value == $value)))
{
$this->vars_rec[$key] = new iAssignment($key,$value,$assignType);
setStatistic('assigments',1);
} else; // don't remove this else
else
if (!(is_array($value) && ($this->vars[$key]->value == $value)))
{
$this->vars[$key] = new iAssignment($key,$value,$assignType);
setStatistic('assigments',1);
}
}
}
function assignHash($hash, $prefix = '', $assignType = -1)
{
while(list($key,$value) = each($hash))
{
if (!is_object($value) && !is_array($value) && is_string($key))
{
if ($prefix != '') $key = $prefix . '_' . $key;
$this->assign($key,$value,$assignType);
}
}
}
function add()
{
$text = $this->text;
/***********************************************************************/
// replace all NON recursive variables
reset($this->vars);
while (list($key) = each($this->vars))
{
$text = preg_replace("/\{$key\}/ism",$this->vars[$key]->getNextValue(),$text);
setStatistic('replacements',1);
if(!is_array($this->vars[$key]->value)) unset($this->vars[$key]);
}
/***********************************************************************/
/***********************************************************************/
// replace all childs
if (count($this->childs)>0) $text = $this->parseChilds($text);
/***********************************************************************/
/***********************************************************************/
// replace all recursive variables
reset($this->vars_rec);
while (list($key) = each($this->vars_rec))
{
$text = preg_replace("/\{$key\}/ism",$this->vars_rec[$key]->getNextValue(),$text);
setStatistic('replacements',1);
if(isset($this->vars[$key]) && !is_array($this->vars[$key]->value)) unset($this->vars[$key]);
}
/***********************************************************************/
$this->output .= $text;
setStatistic('output size',strlen($this->output),true);
}
function parseChilds($text)
{
reset($this->childs);
while (list($name, $child) = each($this->childs))
{
if ($child->output == '' && ($child->type & (BLOCK_HEADEREXISTS | BLOCK_FOOTEREXISTS)) != 0)
{
$startString = "{DYNAMIC_BLOCK_$name}";
$endString = "{DYNAMIC_BLOCK_$name}";
if (($child->type & BLOCK_HEADEREXISTS) == BLOCK_HEADEREXISTS)
$startString = "<\!-- block header : $name -->";
if (($child->type & BLOCK_FOOTEREXISTS) == BLOCK_FOOTEREXISTS)
$endString = "<\!-- block footer : $name -->";
$text = preg_replace("/$startString(.*?)$endString/ism",'',$text);
setStatistic('block replacements',1);
}
else
{
if ($child->isIncluded)
{
$text = preg_replace("/\{$name\}/ism",$child->output,$text);
}
else
{
$text = preg_replace("/\{DYNAMIC_BLOCK_$name\}/ism",$child->output,$text);
}
setStatistic('block replacements',1);
}
$this->childs[$name]->output = '';
}
return $text;
}
// read block from file
function getBlockFromFile($name, $fileName)
{
if (file_exists($fileName))
{
$this->text = join('',file($fileName));
setStatistic('input size',strlen($this->text));
}
else
{
$this->LastError = tplError(FILE_NOTEXISTS,$fileName);
}
}
function getBlockFromParent()
{
$name = $this->name;
preg_match("/<!-- start block : $name -->(.*?)<!-- end block : $name -->/ims",$this->parent->text ,$split);
$this->parent->text = preg_replace("/<!-- start block : $name -->(.*?)<!-- end block : $name -->/ims","{DYNAMIC_BLOCK_$name}",$this->parent->text);
if (($this->type & BLOCK_DUMMYEXISTS) == BLOCK_DUMMYEXISTS)
{
$this->parent->text = preg_replace("/\{DYNAMIC_BLOCK_$name\}.*<\!-- dummy block : $name -->/ims","{DYNAMIC_BLOCK_$name}",$this->parent->text);
$this->parent->text = preg_replace("/<\!-- dummy block : $name -->.*\{DYNAMIC_BLOCK_$name\}/ims","{DYNAMIC_BLOCK_$name}",$this->parent->text);
}
if (isset($split[1]))
$this->text = $split[1];
else
$this->text = "";
}
function change($content)
{
$this->text = $content;
}
}
/******************************************/
// class iTemplate // main class for users
/******************************************/
class iTemplate extends iBlock
{
function iTemplate($fileName)
{
$this->fileName = $fileName;
$this->getBlockFromFile(_MAIN_BLOCK_NAME_,$fileName);
}
function defineBlock($parent,$blockName,$blockParams = 0)
{
$parentText = $this->createBlockCode($parent);
$codeText = $parentText . '->block' . "(\$blockName,\$blockParams);";
eval($codeText);
}
function addTemplate($blockName, $key, &$value, $type = 0)
{
$parentText = $this->createBlockCode($blockName);
$codeText = $parentText . '->assign' . "(\$key, \$value, \$type);";
eval($codeText);
}
function addValue($blockName, $key, $value = "", $type = 0)
{
$parentText = $this->createBlockCode($blockName);
$codeText = $parentText . '->assign' . "(\$key, \$value, \$type);";
eval($codeText);
}
function parse($blockName = '')
{
$parentText = $this->createBlockCode($blockName);
$codeText = $parentText . '->add();';
eval($codeText);
}
function changeBlockContent($blockName,$content)
{
$parentText = $this->createBlockCode($blockName);
$codeText = $parentText . '->change' . "(\$content);";
eval($codeText);
}
function createBlockCode($blockName)
{
$blocks = split(':',$blockName);
$out = '$this';
while (list($no,$bn) = each($blocks))
{
if ($bn != '' && (strtolower($bn) != 'main' || $no!=0)) $out .= '->childs[\'' . $bn . '\']';
}
eval
("
if (!is_object($out))
{
\$this->LastError=tplError(WRONG_TEMPLATE_BLOCK,\$blockName);
exit;
}
");
return $out;
}
function tprint($blockName = '')
{
$parentText = $this->createBlockCode($blockName);
$codeText = 'echo ' . $parentText . '->output;';
eval($codeText);
}
function get($blockName = '')
{
$parentText = $this->createBlockCode($blockName);
$codeText = 'return ' . $parentText . '->output;';
return eval($codeText);
}
}
/******************************************/
// class iAssignment //
/******************************************/
class iAssignment
{
var $key;
var $value;
var $type;
var $pos;
function iAssignment($key,$value,$type = -1)
{
$this->key = $key;
$this->value = $value;
$this->type = $type;
$this->pos = 0;
}
function getNextValue()
{
if (!is_array($this->value)) return $this->value;
if (($this->pos) >= count($this->value)) $this->pos = 0;
$return = $this->value[$this->pos];
$this->pos ++;
return $return;
}
}
?>
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