<?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

 * @param       $compiler

 *

 * @return string with compiled code

 */

function smarty_modifiercompiler_escape($params, $compiler) {

    static $_double_encode = null;

    if ($_double_encode === null) {

        $_double_encode = version_compare(PHP_VERSION, '5.2.3', '>=');

    }

    try {

        $esc_type = smarty_literal_compiler_param($params, 1, 'html');

        $char_set = smarty_literal_compiler_param($params, 2, Smarty::$_CHARSET);

        $double_encode = smarty_literal_compiler_param($params, 3, true);

        if (!$char_set) {

            $char_set = Smarty::$_CHARSET;

        }

        switch ($esc_type) {

            case 'html':

                if ($_double_encode) {

                    return 'htmlspecialchars('

                    . $params[0] . ', ENT_QUOTES, '

                    . var_export($char_set, true) . ', '

                    . var_export($double_encode, true) . ')';

                } elseif ($double_encode) {

                    return 'htmlspecialchars('

                    . $params[0] . ', ENT_QUOTES, '

                    . var_export($char_set, true) . ')';

                } else {

                    // fall back to modifier.escape.php

                }

            case 'htmlall':

                if (Smarty::$_MBSTRING) {

                    if ($_double_encode) {

                        // php >=5.2.3 - go native

                        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) . ')';

                    } elseif ($double_encode) {

                        // php <5.2.3 - only handle double encoding

                        return 'mb_convert_encoding(htmlspecialchars('

                        . $params[0] . ', ENT_QUOTES, '

                        . var_export($char_set, true)

                        . '), "HTML-ENTITIES", '

                        . var_export($char_set, true) . ')';

                    } else {

                        // fall back to modifier.escape.php

                    }

                }

                // no MBString fallback

                if ($_double_encode) {

                    // php >=5.2.3 - go native

                    return 'htmlentities('

                    . $params[0] . ', ENT_QUOTES, '

                    . var_export($char_set, true) . ', '

                    . var_export($double_encode, true) . ')';

                } elseif ($double_encode) {

                    // php <5.2.3 - only handle double encoding

                    return 'htmlentities('

                    . $params[0] . ', ENT_QUOTES, '

                    . var_export($char_set, true) . ')';

                } else {

                    // fall back to modifier.escape.php

                }

            case 'url':

                return 'rawurlencode(' . $params[0] . ')';

            case 'urlpathinfo':

                return 'str_replace("%2F", "/", rawurlencode(' . $params[0] . '))';

            case 'quotes':

                // escape unescaped single quotes

                return 'preg_replace("%(?<!\\\\\\\\)\'%", "\\\'",' . $params[0] . ')';

            case 'javascript':

                // escape quotes and backslashes, newlines, etc.

                return 'strtr(' . $params[0] . ', array("\\\\" => "\\\\\\\\", "\'" => "\\\\\'", "\"" => "\\\\\"", "\\r" => "\\\\r", "\\n" => "\\\n", "</" => "<\/" ))';

        }

    } catch (SmartyException $e) {

        // pass through to regular plugin fallback

    }

    // could not optimize |escape call, so fallback to regular plugin

    if ($compiler->template->caching && ($compiler->tag_nocache | $compiler->nocache)) {

        $compiler->template->required_plugins['nocache']['escape']['modifier']['file'] = SMARTY_PLUGINS_DIR . 'modifier.escape.php';

        $compiler->template->required_plugins['nocache']['escape']['modifier']['function'] = 'smarty_modifier_escape';

    } else {

        $compiler->template->required_plugins['compiled']['escape']['modifier']['file'] = SMARTY_PLUGINS_DIR . 'modifier.escape.php';

        $compiler->template->required_plugins['compiled']['escape']['modifier']['function'] = 'smarty_modifier_escape';

    }

    return 'smarty_modifier_escape(' . join(', ', $params) . ')';

}