/**

 * Smarty plugin

 * @package Smarty

 * @subpackage plugins

 */

/**

 * Smarty {textformat}{/textformat} block plugin

 *

 * Type:     block function

 * Name:     textformat

 * Purpose:  format text a certain way with preset styles

 *           or custom wrap/indent settings

 * @link http://smarty.php.net/manual/en/language.function.textformat.php {textformat}

 *       (Smarty online manual)

 * @param array

 * 

 * Params:   style: string (email)

 *           indent: integer (0)

 *           wrap: integer (80)

 *           wrap_char string ("\n")

 *           indent_char: string (" ")

 *           wrap_boundary: boolean (true)

 * 

 * @param string contents of the block

 * @param Smarty clever simulation of a method

 * @return string string $content re-formatted

 */

function smarty_block_textformat($params, $content, &$smarty)

{

    if (is_null($content)) {

        return;

    }

    $style = null;

    $indent = 0;

    $indent_first = 0;

    $indent_char = ' ';

    $wrap = 80;

    $wrap_char = "\n";

    $wrap_cut = false;

    $assign = null;

    foreach ($params as $_key => $_val) {

        switch ($_key) {

            case 'style':

            case 'indent_char':

            case 'wrap_char':

            case 'assign':

                $$_key = (string)$_val;

                break;

            case 'indent':

            case 'indent_first':

            case 'wrap':

                $$_key = (int)$_val;

                break;

            case 'wrap_cut':

                $$_key = (bool)$_val;

                break;

            default:

                $smarty->trigger_error("textformat: unknown attribute '$_key'");

        }

    }

    if ($style == 'email') {

        $wrap = 72;

    }

    // split into paragraphs

    $_paragraphs = preg_split('![\r\n][\r\n]!',$content);

    $_output = '';

    for($_x = 0, $_y = count($_paragraphs); $_x < $_y; $_x++) {

        if ($_paragraphs[$_x] == '') {

            continue;

        }

        // convert mult. spaces & special chars to single space

        $_paragraphs[$_x] = preg_replace(array('!\s+!','!(^\s+)|(\s+$)!'), array(' ',''), $_paragraphs[$_x]);

        // indent first line

        if($indent_first > 0) {

            $_paragraphs[$_x] = str_repeat($indent_char, $indent_first) . $_paragraphs[$_x];

        }

        // wordwrap sentences

        $_paragraphs[$_x] = wordwrap($_paragraphs[$_x], $wrap - $indent, $wrap_char, $wrap_cut);

        // indent lines

        if($indent > 0) {

            $_paragraphs[$_x] = preg_replace('!^!m', str_repeat($indent_char, $indent), $_paragraphs[$_x]);

        }

    }

    $_output = implode($wrap_char . $wrap_char, $_paragraphs);

    return $assign ? $smarty->assign($assign, $_output) : $_output;

}

/* vim: set expandtab: */

?>