<?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   Erkki Saarniit <erkki@center.ee>
 * @license  PHP 3.0 http://www.php.net/license/3_0.txt
 * @version  SVN: $Id: lang.et.php 302816 2010-08-26 16:02:29Z ifeghali $
 * @link     http://pear.php.net/package/Numbers_Words
 */
require_once "Numbers/Words.php";

/**
 * Class for translating numbers into Estonian.
 *
 * @category Numbers
 * @package  Numbers_Words
 * @author   Erkki Saarniit <erkki@center.ee>
 * @license  PHP 3.0 http://www.php.net/license/3_0.txt
 * @link     http://pear.php.net/package/Numbers_Words
 */
class Numbers_Words_et extends Numbers_Words
{

	// {{{ properties

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

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

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

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

	/**
	 * The sufixes for exponents (singular and plural)
	 * Names partly based on:
	 * http://home.earthlink.net/~mrob/pub/math/largenum.html
	 * http://mathforum.org/dr.math/faq/faq.large.numbers.html
	 * http://www.mazes.com/AmericanNumberingSystem.html
	 * @var array
	 * @access private
	 */
	var $_exponent = array(
		0 => array(''),
		3 => array('tuhat'),
		6 => array('miljon'),
		9 => array('miljard'),
		12 => array('triljon'),
		15 => array('kvadriljon'),
		18 => array('kvintiljon'),
		21 => array('sekstiljon'),
		24 => array('septiljon'),
		27 => array('oktiljon'),
		30 => array('noniljon'),
		33 => array('dekiljon'),
		36 => array('undekiljon'),
		39 => array('duodekiljon'),
		42 => array('tredekiljon'),
		45 => array('kvattuordekiljon'),
		48 => array('kvindekiljon'),
		51 => array('seksdekiljon'),
		54 => array('septendekiljon'),
		57 => array('oktodekiljon'),
		60 => array('novemdekiljon'),
		63 => array('vigintiljon'),
		66 => array('unvigintiljon'),
		69 => array('duovigintiljon'),
		72 => array('trevigintiljon'),
		75 => array('kvattuorvigintiljon'),
		78 => array('kvinvigintiljon'),
		81 => array('seksvigintiljon'),
		84 => array('septenvigintiljon'),
		87 => array('oktovigintiljon'),
		90 => array('novemvigintiljon'),
		93 => array('trigintiljon'),
		96 => array('untrigintiljon'),
		99 => array('duotrigintiljon'),
	   102 => array('trestrigintiljon'),
	   105 => array('kvattuortrigintiljon'),
	   108 => array('kvintrigintiljon'),
	   111 => array('sekstrigintiljon'),
	   114 => array('septentrigintiljon'),
	   117 => array('oktotrigintiljon'),
	   120 => array('novemtrigintiljon'),
	   123 => array('kvadragintiljon'),
	   126 => array('unkvadragintiljon'),
	   129 => array('duokvadragintiljon'),
	   132 => array('trekvadragintiljon'),
	   135 => array('kvattuorkvadragintiljon'),
	   138 => array('kvinkvadragintiljon'),
	   141 => array('sekskvadragintiljon'),
	   144 => array('septenkvadragintiljon'),
	   147 => array('oktokvadragintiljon'),
	   150 => array('novemkvadragintiljon'),
	   153 => array('kvinkvagintiljon'),
	   156 => array('unkvinkvagintiljon'),
	   159 => array('duokvinkvagintiljon'),
	   162 => array('trekvinkvagintiljon'),
	   165 => array('kvattuorkvinkvagintiljon'),
	   168 => array('kvinkvinkvagintiljon'),
	   171 => array('sekskvinkvagintiljon'),
	   174 => array('septenkvinkvagintiljon'),
	   177 => array('oktokvinkvagintiljon'),
	   180 => array('novemkvinkvagintiljon'),
	   183 => array('seksagintiljon'),
	   186 => array('unseksagintiljon'),
	   189 => array('duoseksagintiljon'),
	   192 => array('treseksagintiljon'),
	   195 => array('kvattuorseksagintiljon'),
	   198 => array('kvinseksagintiljon'),
	   201 => array('seksseksagintiljon'),
	   204 => array('septenseksagintiljon'),
	   207 => array('oktoseksagintiljon'),
	   210 => array('novemseksagintiljon'),
	   213 => array('septuagintiljon'),
	   216 => array('unseptuagintiljon'),
	   219 => array('duoseptuagintiljon'),
	   222 => array('treseptuagintiljon'),
	   225 => array('kvattuorseptuagintiljon'),
	   228 => array('kvinseptuagintiljon'),
	   231 => array('seksseptuagintiljon'),
	   234 => array('septenseptuagintiljon'),
	   237 => array('oktoseptuagintiljon'),
	   240 => array('novemseptuagintiljon'),
	   243 => array('oktogintiljon'),
	   246 => array('unoktogintiljon'),
	   249 => array('duooktogintiljon'),
	   252 => array('treoktogintiljon'),
	   255 => array('kvattuoroktogintiljon'),
	   258 => array('kvinoktogintiljon'),
	   261 => array('seksoktogintiljon'),
	   264 => array('septoktogintiljon'),
	   267 => array('oktooktogintiljon'),
	   270 => array('novemoktogintiljon'),
	   273 => array('nonagintiljon'),
	   276 => array('unnonagintiljon'),
	   279 => array('duononagintiljon'),
	   282 => array('trenonagintiljon'),
	   285 => array('kvattuornonagintiljon'),
	   288 => array('kvinnonagintiljon'),
	   291 => array('seksnonagintiljon'),
	   294 => array('septennonagintiljon'),
	   297 => array('oktononagintiljon'),
	   300 => array('novemnonagintiljon'),
	   303 => array('kentiljon'),
	   309 => array('duokentiljon'),
	   312 => array('trekentiljon'),
	   366 => array('primo-vigesimo-kentiljon'),
	   402 => array('trestrigintakentiljon'),
	   603 => array('dukentiljon'),
	   624 => array('septendukentiljon'),
	   2421 => array('seksoktingentiljon'),
	   3003 => array('milliljon'),
	   3000003 => array('milli-milliljon'));

	/**
	 * The array containing the digits (indexed by the digits themselves).
	 * @var array
	 * @access private
	 */
	var $_digits = array(
		0 => 'null', 'üks', 'kaks', 'kolm', 'neli',
		'viis', 'kuus', 'seitse', 'kaheksa', 'üheksa'
	);

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

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

	/**
	 * Converts a number to its word representation
	 * in Estonian 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 $powsuffix The power name to be added to the end of the return string.
	 *                           Used internally. Optional, defaults to ''.
	 *
	 * @return string  The corresponding word representation
	 *
	 * @access protected
	 * @since  Numbers_Words 0.16.3
	 */
	function _toWords($num, $power = 0, $powsuffix = '')
	{
		$ret = '';

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

		$num = trim($num);
		$num = preg_replace('/^0+/', '', $num);

		if (strlen($num) > 3) {
			$maxp = strlen($num) - 1;
			$curp = $maxp;

			for ($p = $maxp; $p > 0; --$p) { // power
				if (isset($this->_exponent[$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) {
			$ret .= $this->_sep . $this->_digits[$h] . 'sada';
		}

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

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

					case 1:
					case 2:
					case 3:
					case 4:
					case 5:
					case 6:
					case 7:
					case 8:
					case 9:
						$ret .= $this->_sep . $this->_digits[$d] . 'teist';
					break;
				}

			break;
		}

		if ($t != 1 && $d > 0) {
			if ($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 . $lev[0].($num != 1 && $power!= 3 ? 'it' : '');
		}

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

		return $ret;
	}
	// }}}
}