<?php



/**

 * Shows a hard-coded system message.

 */

function piecrust_show_system_message($message, $details = null)

{

    $contents = file_get_contents(__DIR__ . '/res/messages/' . $message . '.html');

    if ($details != null)

    {

        $contents = str_replace('{{ details }}', $details, $contents);

    }

    echo $contents;

}



/**

 * The PieCrust error handler.

 */

function piecrust_error_handler($errno, $errstr, $errfile = null, $errline = 0, $errcontext = null)

{

    if (error_reporting() & $errno)

        throw new ErrorException($errstr, 0, $errno, $errfile, $errline);

    return;

}



/**

 * The PieCrust shutdown function.

 */

function piecrust_shutdown_function()

{ 

    $error = error_get_last();

    if ($error)

    {

        try

        {

            $guard = 100;

            while (ob_get_level() > 0 && (--$guard) > 0)

                ob_end_clean();

        }

        catch (Exception $e)

        {

        }

        

        piecrust_show_system_message('critical', "{$error['message']} in '{$error['file']}:{$error['line']}'");

        exit();

    }

}



/**

 * The Chef shutdown function (command-line version of `piecrust_shutdown_function`).

 */

function chef_shutdown_function()

{

    $error = error_get_last();

    if ($error)

    {

        try

        {

            $guard = 100;

            while (ob_get_level() > 0 && (--$guard) > 0)

                ob_end_clean();

        }

        catch (Exception $e)

        {

        }



        echo "Critical error in '{$error['file']}:{$error['line']}': {$error['message']}\n";

        exit();

    }

}



/**

 * Sets up basic things like the global error handler or the timezone.

 */

function piecrust_setup($profile = 'web')

{

    // Add the `libs` directory to the include path for the PEAR stuff

    // that still uses old-style includes, and for other stuff like Markdown

    // and Smartypants that have conditional include directories (i.e. include

    // a different implement of the same class based on runtime conditions).

    $srcDir = __DIR__ . '/src';

    $libsDir = __DIR__ . '/libs';

    set_include_path(

        get_include_path() . PATH_SEPARATOR . 

        $libsDir . '/pear' . PATH_SEPARATOR .

        $libsDir);



    // Set the autoloader

    $loader = (require $libsDir . '/autoload.php');

    $loader->add('Console_', $libsDir . '/pear');

    $loader->add('Log_', $libsDir . '/pear');

    

    // Set error handling.

    switch ($profile)

    {

    case 'web':

        {

            set_error_handler('piecrust_error_handler');

            register_shutdown_function('piecrust_shutdown_function');

            break;

        }

    case 'chef':

    default:

        {

            ini_set('display_errors', true);

            error_reporting(E_ALL);

            set_error_handler('piecrust_error_handler');

            register_shutdown_function('chef_shutdown_function');

            break;

        }

    case 'test':

        {

            ini_set('display_errors', true);

            ini_set('display_startup_errors', true);

            error_reporting(E_ALL | E_STRICT);

            set_error_handler('piecrust_error_handler');

            break;

        }

    }

}





/**

 * Setups and runs a new PieCrust app with the given parameters, requesting the given URI.

 */

function piecrust_run($parameters = array(), $uri = null, $profile = 'web')

{

    piecrust_setup($profile);



    $parameters = PieCrust\Runner\PieCrustRunner::getPieCrustParameters($parameters);

    $pieCrust = new PieCrust\PieCrust($parameters);

    $runner = new PieCrust\Runner\PieCrustRunner($pieCrust);

    $runner->run($uri);

}



/**

 * Setups and runs a new instance of Chef.

 */

function piecrust_chef($userArgc = null, $userArgv = null, $profile = 'chef')

{

    piecrust_setup($profile);

    

    $chef = new PieCrust\Chef\Chef();

    return $chef->run($userArgc, $userArgv);

}