<?php // $Revision: 1.3 $
/* vim: set expandtab ts=4 sw=4 sts=4: */

/**
 * $Id: textutil.php,v 1.3 2003/10/28 22:46:25 madbear Exp $
 * 
 * Copyright (c) 2003 by the NetOffice developers
 * 
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 */

class htmltextsystem {
    function clear_repeats($text)
    {
        return preg_replace('/(.)\1{2,}/s', "$1$1$1", $text);
    } 
    function make_dir($text)
    {
        return strtolower(preg_replace("/[^0-9a-zA-Z]/", "", $text));
    } 
    function prep_db($text)
    {
        $retval = $text;
        return addslashes($retval);
    } 
    function strip_db($dbval, $strip = '', $htmlspecialchars = 1, $nl2br = 1)
    {
        $retval = strip_tags(stripslashes(trim($dbval)), $strip);
        if ($htmlspecialchars == 1) $retval = htmlspecialchars($retval);
        if ($nl2br == 1) $retval = nl2br($retval);
        return $retval;
    } 
    function is_email($address)
    {
        if (!ereg("@", $address)) return 0;
        if (ereg("\.\.", $address) || ereg(" ", $address)) return 0;
        return preg_match('/\w+(?:[\.\w]+)*\w@(?:\w)+(?:\.\w+)*\.\w{2,3}/', $address);
    } 
    function is_url($address)
    {
        if (ereg("\.\.", $address)) return 0;
        if (!strstr($address, "://") || ereg(" ", $address)) return 0;
        return (strlen($address) > 10);
    } 
    function formatsize($value)
    {
        $retval = $value;
        $unit = " B";
        if ($retval > 1024) {
            $retval = $retval / 1024;
            $unit = " KB";
        } 
        if ($retval > 1024) {
            $retval = $retval / 1024;
            $unit = " MB";
        } 
        return str_replace(".00", "", sprintf("%0.2f", $retval)) . $unit;
    } 
    function formattime($formatstring, $secs)
    {
        if ($secs < 2) return "very little time";
        $intern = array();
        $desc = array(1 => 'second',
            60 => 'minute',
            3600 => 'hour',
            86400 => 'day',
            604800 => 'week',
            2628000 => 'month',
            31536000 => 'year');
        while (list($k, $s) = each($desc)) {
            $breaks[] = $k;
            $$s = 0;
        } 
        sort($breaks);

        $i = 0;
        while ($i < count($breaks) && $secs >= (2 * $breaks[$i])) {
            $i++;
        } 
        $i--;
        $break = $breaks[$i];

        $$desc[$break] = intval($secs / $break);
        if ($i > 0) {
            $rest = $secs % $break;
            $break = $breaks[--$i];
            if ($rest > 0) {
                $$desc[$break] = intval($rest / $break);
            } 
        } 
        $retval = $formatstring;
        if ($year > 0) {
            $retval = str_replace("%y", $year . " year" . (($year > 1)?"s":""), $retval);
            $retval = str_replace("%x", $year . " year" . (($year > 1)?"s":""), $retval);
        } 
        $retval = str_replace("%y", "", $retval);
        if ($month > 0) {
            $retval = str_replace("%m", $month . " month" . (($month > 1)?"s":""), $retval);
            $retval = str_replace("%x", $month . " month" . (($month > 1)?"s":""), $retval);
        } 
        $retval = str_replace("%m", "", $retval);
        if ($week > 0) {
            $retval = str_replace("%w", $week . " week" . (($week > 1)?"s":""), $retval);
            $retval = str_replace("%x", $week . " week" . (($week > 1)?"s":""), $retval);
        } 
        $retval = str_replace("%w", "", $retval);
        if ($day > 0) {
            $retval = str_replace("%d", $day . " day" . (($day > 1)?"s":""), $retval);
            $retval = str_replace("%x", $day . " day" . (($day > 1)?"s":""), $retval);
        } 
        $retval = str_replace("%d", "", $retval);
        if ($hour > 0) {
            $retval = str_replace("%h", $hour . " hour" . (($hour > 1)?"s":""), $retval);
            $retval = str_replace("%x", $hour . " hour" . (($hour > 1)?"s":""), $retval);
        } 
        $retval = str_replace("%h", "", $retval);
        if ($minute > 0) {
            $retval = str_replace("%i", $minute . " minute" . (($minute > 1)?"s":""), $retval);
            $retval = str_replace("%x", $minute . " minute" . (($minute > 1)?"s":""), $retval);
        } 
        $retval = str_replace("%i", "", $retval);
        if ($second > 0) {
            $retval = str_replace("%s", $second . " second" . (($second > 1)?"s":""), $retval);
            $retval = str_replace("%x", $second . " second" . (($second > 1)?"s":""), $retval);
        } 
        $retval = str_replace("%s", "", $retval);
        $retval = str_replace("%x", "", $retval);

        if ($month > 10) $month = "0" . $month;
        if ($day > 10) $day = "0" . $day;
        if ($hour > 10) $hour = "0" . $hour;
        if ($minute > 10) $minute = "0" . $minute;
        if ($second > 10) $second = "0" . $second;

        $retval = str_replace("%Y", $year, $retval);
        $retval = str_replace("%M", $month, $retval);
        $retval = str_replace("%W", $week, $retval);
        $retval = str_replace("%D", $day, $retval);
        $retval = str_replace("%H", $hour, $retval);
        $retval = str_replace("%I", $minute, $retval);
        $retval = str_replace("%S", $second, $retval);
        return trim($retval);
    } 
} 

$textutil = new htmltextsystem();

?>