<?php
/**
 * Numbers_Words
 *
 * PHP version 4
 *
 * Copyright (c) 1997-2006 The PHP Group
 *
 * This source file is subject to version 3.0 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_0.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   Ernas M. Jamil <ernasm@samba.co.id>
 * @author   Arif Rifai Dwiyanto
 * @license  PHP 3.0 http://www.php.net/license/3_0.txt
 * @version  SVN: $Id: lang.id.php 302816 2010-08-26 16:02:29Z ifeghali $
 * @link     http://pear.php.net/package/Numbers_Words
 */

require_once "PEAR.php";
require_once "Numbers/Words.php";

/**
* Class for translating numbers into Indonesian.
 *
 * @category Numbers
 * @package  Numbers_Words
 * @author   Ernas M. Jamil <ernasm@samba.co.id>
 * @author   Arif Rifai Dwiyanto
 * @license  PHP 3.0 http://www.php.net/license/3_0.txt
 * @link     http://pear.php.net/package/Numbers_Words
 */
class Numbers_Words_id extends Numbers_Words
{

	// {{{ properties

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

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

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

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

	/**
	 * The sufixes for exponents (singular and plural)
	 * Names partly based on:
	 * http://www.users.dircon.co.uk/~shaunf/shaun/numbers/millions.htm
	 * @var array
	 * @access private
	 */
	var $_exponent = array(
		0 => array(''),
		3 => array('ribu'),
		6 => array('juta'),
		9 => array('milyar'),
	   12 => array('trilyun'),
	   24 => array('quadrillion'),
	   30 => array('quintillion'),
	   36 => array('sextillion'),
	   42 => array('septillion'),
	   48 => array('octillion'),
	   54 => array('nonillion'),
	   60 => array('decillion'),
	   66 => array('undecillion'),
	   72 => array('duodecillion'),
	   78 => array('tredecillion'),
	   84 => array('quattuordecillion'),
	   90 => array('quindecillion'),
	   96 => array('sexdecillion'),
	  102 => array('septendecillion'),
	  108 => array('octodecillion'),
	  114 => array('novemdecillion'),
	  120 => array('vigintillion'),
	  192 => array('duotrigintillion'),
	  600 => array('centillion')
		);

	/**
	 * The array containing the digits (indexed by the digits themselves).
	 * @var array
	 * @access private
	 */
	var $_digits = array(
		0 => 'nol', 'satu', 'dua', 'tiga', 'empat',
		'lima', 'enam', 'tujuh', 'delapan', 'sembilan'
	);

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

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

	/**
	 * Converts a number to its word representation
	 * in Indonesian 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 $powsuffix The power name to be added to the end of the return string.
	 *                           Used internally. Optional, defaults to ''.
	 *
	 * @return string  The corresponding word representation
	 *
	 * @access protected
	 * @author Ernas M. Jamil
	 * @since  Numbers_Words 0.16.3
	 */
	function _toWords($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) > 4) {
			$maxp = strlen($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 = $th = 0;

		switch (strlen($num)) {
			case 4:
				$th = (int) substr($num, -4, 1);

			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 ($th) {
			if ($th==1) {
				$ret .= $this->_sep . 'seribu';
			} else {
				$ret .= $this->_sep . $this->_digits[$th] . $this->_sep . 'ribu';
			}
		}

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

			// in English only - add ' and' for [1-9]01..[1-9]99
			// (also for 1001..1099, 10001..10099 but it is harder)
			// for now it is switched off, maybe some language purists
			// can force me to enable it, or to remove it completely
			// if (($t + $d) > 0)
		}

		// ten, twenty etc.
		switch ($t) {
			case 9:
			case 8:
			case 7:
			case 6:
			case 5:
			case 4:
			case 3:
			case 2:
				$ret .= $this->_sep . $this->_digits[$t] . ' puluh';
			break;

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

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

					case 2:
					case 3:
					case 4:
					case 5:
					case 6:
					case 7:
					case 8:
					case 9:
						$ret .= $this->_sep . $this->_digits[$d] . ' belas';
					break;
				}
			break;
		}

		if ($t != 1 && $d > 0) { // add digits only in <0>,<1,9> and <21,inf>
			// add minus sign between [2-9] and digit
			if ($t > 1) {
				$ret .= ' ' . $this->_digits[$d];
			} else {
				$ret .= $this->_sep . $this->_digits[$d];
			}
		}

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

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

			$ret .= $this->_sep . $lev[0];
		}

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

		return $ret;
	}
	// }}}
}
