ThinkPHP/Library/Vendor/Smarty/sysplugins/smarty_internal_compile_capture.php

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<?php
/**
 * Smarty Internal Plugin Compile Capture
 *
 * Compiles the {capture} tag
 *
 * @package Smarty
 * @subpackage Compiler
 * @author Uwe Tews
 */

/**
 * Smarty Internal Plugin Compile Capture Class
 *
 * @package Smarty
 * @subpackage Compiler
 */
class Smarty_Internal_Compile_Capture extends Smarty_Internal_CompileBase {

    /**
     * Attribute definition: Overwrites base class.
     *
     * @var array
     * @see Smarty_Internal_CompileBase
     */
    public $shorttag_order = array('name');
    /**
     * Attribute definition: Overwrites base class.
     *
     * @var array
     * @see Smarty_Internal_CompileBase
     */
    public $optional_attributes = array('name', 'assign', 'append');

    /**
     * Compiles code for the {capture} tag
     *
     * @param array  $args     array with attributes from parser
     * @param object $compiler compiler object
     * @return string compiled code
     */
    public function compile($args, $compiler)
    {
        // check and get attributes
        $_attr = $this->getAttributes($compiler, $args);

        $buffer = isset($_attr['name']) ? $_attr['name'] : "'default'";
        $assign = isset($_attr['assign']) ? $_attr['assign'] : 'null';
        $append = isset($_attr['append']) ? $_attr['append'] : 'null';

        $compiler->_capture_stack[] = array($buffer, $assign, $append, $compiler->nocache);
        // maybe nocache because of nocache variables
        $compiler->nocache = $compiler->nocache | $compiler->tag_nocache;
        $_output = "<?php \$_smarty_tpl->_capture_stack[] = array($buffer, $assign, $append); ob_start(); ?>";

        return $_output;
    }

}