smarty/libs/sysplugins/smarty_internal_extension_clearcompiled.php

<?php

/**
 * Smarty Extension ClearCompiled
 *
 * $smarty->clearCompiledTemplate() method
 *
 * @package    Smarty
 * @subpackage PluginsInternal
 * @author     Uwe Tews
 */
class Smarty_Internal_Extension_ClearCompiled
{
    /**
     * Delete compiled template file
     *
     * @param  Smarty  $smarty        Smarty instance
     * @param  string  $resource_name template name
     * @param  string  $compile_id    compile id
     * @param  integer $exp_time      expiration time
     *
     * @return integer number of template files deleted
     */
    public static function clearCompiledTemplate(Smarty $smarty, $resource_name, $compile_id, $exp_time)
    {
        $_compile_dir = $smarty->getCompileDir();
        if ($_compile_dir == '/') { //We should never want to delete this!
            return 0;
        }
        $_compile_id = isset($compile_id) ? preg_replace('![^\w]+!', '_', $compile_id) : null;
        $_dir_sep = $smarty->use_sub_dirs ? DS : '^';
        if (isset($resource_name)) {
            $_save_stat = $smarty->caching;
            $smarty->caching = false;
            $tpl = new $smarty->template_class($resource_name, $smarty);
            $smarty->caching = $_save_stat;
            if ($tpl->source->exists) {
                // remove from compileds cache
                $tpl->source->compileds = array();
                // remove from template cache
                $_templateId = $tpl->getTemplateId($resource_name);
                if (isset($smarty->template_objects[$_templateId])) {
                    unset($smarty->template_objects[$_templateId]);
                }
                $_resource_part_1 = basename(str_replace('^', DS, $tpl->compiled->filepath));
                $_resource_part_1_length = strlen($_resource_part_1);
            } else {
                return 0;
            }

            $_resource_part_2 = str_replace('.php', '.cache.php', $_resource_part_1);
            $_resource_part_2_length = strlen($_resource_part_2);
        }
        $_dir = $_compile_dir;
        if ($smarty->use_sub_dirs && isset($_compile_id)) {
            $_dir .= $_compile_id . $_dir_sep;
        }
        if (isset($_compile_id)) {
            $_compile_id_part = $_compile_dir . $_compile_id . $_dir_sep;
            $_compile_id_part_length = strlen($_compile_id_part);
        }
        $_count = 0;
        try {
            $_compileDirs = new RecursiveDirectoryIterator($_dir);
            // NOTE: UnexpectedValueException thrown for PHP >= 5.3
        }
        catch (Exception $e) {
            return 0;
        }
        $_compile = new RecursiveIteratorIterator($_compileDirs, RecursiveIteratorIterator::CHILD_FIRST);
        foreach ($_compile as $_file) {
            if (substr(basename($_file->getPathname()), 0, 1) == '.' || strpos($_file, '.svn') !== false) {
                continue;
            }

            $_filepath = (string) $_file;

            if ($_file->isDir()) {
                if (!$_compile->isDot()) {
                    // delete folder if empty
                    @rmdir($_file->getPathname());
                }
            } else {
                $unlink = false;
                if ((!isset($_compile_id) || (isset($_filepath[$_compile_id_part_length]) &&
                            $a = !strncmp($_filepath, $_compile_id_part, $_compile_id_part_length))) &&
                    (!isset($resource_name) || (isset($_filepath[$_resource_part_1_length]) &&
                            substr_compare($_filepath, $_resource_part_1, - $_resource_part_1_length, $_resource_part_1_length) ==
                            0) || (isset($_filepath[$_resource_part_2_length]) &&
                            substr_compare($_filepath, $_resource_part_2, - $_resource_part_2_length, $_resource_part_2_length) ==
                            0))
                ) {
                    if (isset($exp_time)) {
                        if (time() - @filemtime($_filepath) >= $exp_time) {
                            $unlink = true;
                        }
                    } else {
                        $unlink = true;
                    }
                }

                if ($unlink && @unlink($_filepath)) {
                    $_count ++;
                }
            }
        }
        // clear compiled cache
        if (!isset($resource_name)) {
            foreach ($smarty->source_objects as $source) {
                $source->compileds = array();
            }
        }
        return $_count;
    }
}