ThinkPHP/Library/Vendor/Smarty/plugins/modifiercompiler.escape.php

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<?php
/**
 * Smarty plugin
 *
 * @package Smarty
 * @subpackage PluginsModifierCompiler
 */

/**
 * @ignore
 */
require_once( SMARTY_PLUGINS_DIR .'shared.literal_compiler_param.php' );

/**
 * Smarty escape modifier plugin
 *
 * Type:     modifier<br>
 * Name:     escape<br>
 * Purpose:  escape string for output
 *
 * @link http://www.smarty.net/docsv2/en/language.modifier.escape count_characters (Smarty online manual)
 * @author Rodney Rehm
 * @param array $params parameters
 * @return string with compiled code
 */
function smarty_modifiercompiler_escape($params, $compiler)
{
    try {
        $esc_type = smarty_literal_compiler_param($params, 1, 'html');
        $char_set = smarty_literal_compiler_param($params, 2, SMARTY_RESOURCE_CHAR_SET);
        $double_encode = smarty_literal_compiler_param($params, 3, true);

        if (!$char_set) {
            $char_set = SMARTY_RESOURCE_CHAR_SET;
        }

        switch ($esc_type) {
            case 'html':
                return 'htmlspecialchars('
                    . $params[0] .', ENT_QUOTES, '
                    . var_export($char_set, true) . ', '
                    . var_export($double_encode, true) . ')';

            case 'htmlall':
                if (SMARTY_MBSTRING /* ^phpunit */&&empty($_SERVER['SMARTY_PHPUNIT_DISABLE_MBSTRING'])/* phpunit$ */) {
                    return 'mb_convert_encoding(htmlspecialchars('
                        . $params[0] .', ENT_QUOTES, '
                        . var_export($char_set, true) . ', '
                        . var_export($double_encode, true)
                        . '), "HTML-ENTITIES", '
                        . var_export($char_set, true) . ')';
                }

                // no MBString fallback
                return 'htmlentities('
                    . $params[0] .', ENT_QUOTES, '
                    . var_export($char_set, true) . ', '
                    . var_export($double_encode, true) . ')';

            case 'url':