<?php
/**
 * Numbers_Words
 *
 * PHP version 4
 *
 * Copyright (c) 1997-2006 The PHP Group
 *
 * This source file is subject to version 3.01 of the PHP license,
 * that is bundled with this package in the file LICENSE, and is
 * available at through the world-wide-web at
 * http://www.php.net/license/3_01.txt
 * If you did not receive a copy of the PHP license and are unable to
 * obtain it through the world-wide-web, please send a note to
 * license@php.net so we can mail you a copy immediately.
 *
 * @category Numbers
 * @package  Numbers_Words
 * @author   Jesper Veggerby <pear.nosey@veggerby.dk>
 * @license  PHP 3.01 http://www.php.net/license/3_01.txt
 * @version  SVN: $Id$
 * @link     http://pear.php.net/package/Numbers_Words
 */

/**
 * Class for translating numbers into Danish.
 *
 * @author Jesper Veggerby <pear.nosey@veggerby.dk>
 * @package Numbers_Words
 */

/**
 * Include needed files
 */
require_once "Numbers/Words.php";

/**
 * Class for translating numbers into Danish.
 *
 * @category Numbers
 * @package  Numbers_Words
 * @author   Jesper Veggerby <pear.nosey@veggerby.dk>
 * @license  PHP 3.01 http://www.php.net/license/3_01.txt
 * @link     http://pear.php.net/package/Numbers_Words
 */
class Numbers_Words_dk extends Numbers_Words
{

    // {{{ properties

    /**
     * Locale name
     * @var string
     * @access public
     */
    var $locale = 'dk';

    /**
     * Language name in English
     * @var string
     * @access public
     */
    var $lang = 'Danish';

    /**
     * Native language name
     * @var string
     * @access public
     */
    var $lang_native = 'Dansk';

    /**
     * The word for the minus sign
     * @var string
     * @access private
     */
    var $_minus = 'minus'; // minus sign

    /**
     * The sufixes for exponents (singular and plural).
     * From: http://da.wikipedia.org/wiki/Navne_p%E5_store_tal
     * @var array
     * @access private
     */
    var $_exponent = array(
        0 => array(''),
        3 => array('tusind','tusinde'),
        6 => array('million','millioner'),
        9 => array('milliard','milliarder'),
       12 => array('billion','billioner'),
       15 => array('billiard','billiarder'),
       18 => array('trillion','trillioner'),
       21 => array('trilliard','trilliarder'),
       24 => array('quadrillion','quadrillioner'),
       30 => array('quintillion','quintillioner'),
       36 => array('sextillion','sextillioner'),
       42 => array('septillion','septillioner'),
       48 => array('octillion','octillioner'),
       54 => array('nonillion','nonillioner'),
       60 => array('decillion','decillioner'),
      120 => array('vigintillion','vigintillioner'),
      600 => array('centillion','centillioner')
        );

    /**
     * The array containing the digits (indexed by the digits themselves).
     * @var array
     * @access private
     */
    var $_digits = array(
        0 => 'nul', 'en', 'to', 'tre', 'fire',
        'fem', 'seks', 'syv', 'otte', 'ni'
    );

    /**
     * The word separator
     * @var string
     * @access private
     */
    var $_sep = ' ';

    /**
     * The currency names (based on the below links,
     * informations from central bank websites and on encyclopedias)
     *
     * @var array
     * @link http://da.wikipedia.org/wiki/Valuta
     * @access private
     */
    var $_currency_names = array(
      'AUD' => array(array('australsk dollar', 'australske dollars'), array('cent')),
      'CAD' => array(array('canadisk dollar', 'canadisk dollars'), array('cent')),
      'CHF' => array(array('schweitzer franc'), array('rappen')),
      'CYP' => array(array('cypriotisk pund', 'cypriotiske pund'), array('cent')),
      'CZK' => array(array('tjekkisk koruna'), array('halerz')),
      'DKK' => array(array('krone', 'kroner'), array('øre')),
      'EUR' => array(array('euro'), array('euro-cent')),
      'GBP' => array(array('pund'), array('pence')),
      'HKD' => array(array('Hong Kong dollar', 'Hong Kong dollars'), array('cent')),
      'JPY' => array(array('yen'), array('sen')),
      'NOK' => array(array('norsk krone', 'norske kroner'), array('øre')),
      'PLN' => array(array('zloty', 'zlotys'), array('grosz')),
      'SEK' => array(array('svensk krone', 'svenske kroner'), array('øre')),
      'USD' => array(array('dollar', 'dollars'), array('cent'))
    );

    /**
     * The default currency name
     * @var string
     * @access public
     */
    var $def_currency = 'DKK'; // Danish krone

    // }}}
    // {{{ _toWords()

    /**
     * Converts a number to its word representation
     * in Danish language
     *
     * @param integer $num       An integer between -infinity and infinity inclusive :)
     *                           that need to be converted to words
     * @param integer $power     The power of ten for the rest of the number to the right.
     *                           Optional, defaults to 0.
     * @param integer $powsuffix The power name to be added to the end of the return string.
     *                            Used internally. Optional, defaults to ''.
     *
     * @return string  The corresponding word representation
     *
     * @access protected
     * @author Jesper Veggerby <pear.nosey@veggerby.dk>
     * @since  Numbers_Words 0.16.3
     */
    function _toWords($num, $power = 0, $powsuffix = '')
    {
        $ret = '';

        // add a minus sign
        if (substr($num, 0, 1) == '-') {
            $ret = $this->_sep . $this->_minus;
            $num = substr($num, 1);
        }

        // strip excessive zero signs and spaces
        $num = trim($num);
        $num = preg_replace('/^0+/', '', $num);

        if (strlen($num) > 3) {
            $maxp = strlen($num)-1;
            $curp = $maxp;
            for ($p = $maxp; $p > 0; --$p) { // power

                // check for highest power
                if (isset($this->_exponent[$p])) {
                    // send substr from $curp to $p
                    $snum = substr($num, $maxp - $curp, $curp - $p + 1);
                    $snum = preg_replace('/^0+/', '', $snum);
                    if ($snum !== '') {
                        $cursuffix = $this->_exponent[$power][count($this->_exponent[$power])-1];
                        if ($powsuffix != '') {
                            $cursuffix .= $this->_sep . $powsuffix;
                        }

                        $ret .= $this->_toWords($snum, $p, $cursuffix);
                    }
                    $curp = $p - 1;
                    continue;
                }
            }
            $num = substr($num, $maxp - $curp, $curp - $p + 1);
            if ($num == 0) {
                return $ret;
            }
        } elseif ($num == 0 || $num == '') {
            return $this->_sep . $this->_digits[0];
        }

        $h = $t = $d = 0;

        switch(strlen($num)) {
        case 3:
            $h = (int)substr($num, -3, 1);

        case 2:
            $t = (int)substr($num, -2, 1);

        case 1:
            $d = (int)substr($num, -1, 1);
            break;

        case 0:
            return;
            break;
        }

        if ($h) {
            if ($h == 1) {
                $ret .= $this->_sep . 'et' . $this->_sep . 'hundrede';
            } else {
                $ret .= $this->_sep . $this->_digits[$h] . $this->_sep . 'hundrede';
            }

            //if (($t + $d) > 0)
            //  $ret .= $this->_sep . 'og';
        } elseif ((isset($maxp)) && ($maxp > 3)) {
            // add 'og' in the case where there are preceding thousands but not hundreds or tens,
            // so fx. 80001 becomes 'firs tusinde og en' instead of 'firs tusinde en'
            $ret .= $this->_sep . 'og';
        }


        if ($t != 1 && $d > 0) {
            $ret .= $this->_sep . (($d == 1 & $power == 3 && $t == 0 && $h == 0) ? "et" : $this->_digits[$d]) . ($t > 1 ? $this->_sep . "og" : "");
        }

        // ten, twenty etc.
        switch ($t) {
        case 9:
            $ret .= $this->_sep . 'halvfems';
            break;

        case 8:
            $ret .= $this->_sep . 'firs';
            break;

        case 7:
            $ret .= $this->_sep . 'halvfjerds';
            break;

        case 6:
            $ret .= $this->_sep . 'tres';
            break;

        case 5:
            $ret .= $this->_sep . 'halvtreds';
            break;

        case 4:
            $ret .= $this->_sep . 'fyrre';
            break;

        case 3:
            $ret .= $this->_sep . 'tredive';
            break;

        case 2:
            $ret .= $this->_sep . 'tyve';
            break;

        case 1:
            switch ($d) {
            case 0:
                $ret .= $this->_sep . 'ti';
                break;

            case 1:
                $ret .= $this->_sep . 'elleve';
                break;

            case 2:
                $ret .= $this->_sep . 'tolv';
                break;

            case 3:
                $ret .= $this->_sep . 'tretten';
                break;

            case 4:
                $ret .= $this->_sep . 'fjorten';
                break;

            case 5:
                $ret .= $this->_sep . 'femten';
                break;

            case 6:
                $ret .= $this->_sep . 'seksten';
                break;

            case 7:
                $ret .= $this->_sep . 'sytten';
                break;

            case 8:
                $ret .= $this->_sep . 'atten';
                break;

            case 9:
                $ret .= $this->_sep . 'nitten';
                break;

            }
            break;
        }

        if ($power > 0) {
            if (isset($this->_exponent[$power])) {
                $lev = $this->_exponent[$power];
            }

            if (!isset($lev) || !is_array($lev)) {
                return null;
            }

            if ($d == 1 && ($t+$h) == 0) {
                $ret .= $this->_sep . $lev[0];
            } else {
                $ret .= $this->_sep . $lev[1];
            }
        }

        if ($powsuffix != '') {
            $ret .= $this->_sep . $powsuffix;
        }

        return $ret;
    }
    // }}}
    // {{{ toCurrencyWords()

    /**
     * Converts a currency value to its word representation
     * (with monetary units) in danish language
     *
     * @param integer $int_curr         An international currency symbol
     *                                  as defined by the ISO 4217 standard (three characters)
     * @param integer $decimal          A money total amount without fraction part (e.g. amount of dollars)
     * @param integer $fraction         Fractional part of the money amount (e.g. amount of cents)
     *                                  Optional. Defaults to false.
     * @param integer $convert_fraction Convert fraction to words (left as numeric if set to false).
     *                                  Optional. Defaults to true.
     *
     * @return string  The corresponding word representation for the currency
     *
     * @access public
     * @author Jesper Veggerby <pear.nosey@veggerby.dk>
     * @since  Numbers_Words 0.4
     */
    function toCurrencyWords($int_curr, $decimal, $fraction = false, $convert_fraction = true)
    {
        $int_curr = strtoupper($int_curr);
        if (!isset($this->_currency_names[$int_curr])) {
            $int_curr = $this->def_currency;
        }
        $curr_names = $this->_currency_names[$int_curr];

        if (($decimal != "") and ($decimal != 0)) {
            $ret = trim($this->_toWords($decimal));
            $lev = ($decimal == 1) ? 0 : 1;
            if ($lev > 0) {
                if (count($curr_names[0]) > 1) {
                    $ret .= $this->_sep . $curr_names[0][$lev];
                } else {
                    $ret .= $this->_sep . $curr_names[0][0];
                }
            } else {
                $ret .= $this->_sep . $curr_names[0][0];
            }

            if (($fraction !== false)  and ($fraction != 0)) {
                $ret .= $this->_sep . "og";
            }
        }

        if (($fraction !== false) and ($fraction != 0)) {
            if ($convert_fraction) {
                $ret .= $this->_sep . trim($this->_toWords($fraction));
            } else {
                $ret .= $this->_sep . $fraction;
            }
            $lev = ($fraction == 1) ? 0 : 1;
            if ($lev > 0) {
                if (count($curr_names[1]) > 1) {
                    $ret .= $this->_sep . $curr_names[1][$lev];
                } else {
                    $ret .= $this->_sep . $curr_names[1][0];
                }
            } else {
                $ret .= $this->_sep . $curr_names[1][0];
            }
        }
        return $ret;
    }
    // }}}


}
