<?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   Petr 'PePa' Pavel <petr.pavel@pepa.info>
 * @license  PHP 3.0 http://www.php.net/license/3_0.txt
 * @version  SVN: $Id: lang.cs.php 302816 2010-08-26 16:02:29Z ifeghali $
 * @link     http://pear.php.net/package/Numbers_Words
 */

/**
 * Class for translating numbers into Czech.
 *
 * @author Petr 'PePa' Pavel
 * @package Numbers_Words
 */

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

/**
 * Class for translating numbers into Czech.
 *
 * @category Numbers
 * @package  Numbers_Words
 * @author   Petr 'PePa' Pavel <petr.pavel@pepa.info>
 * @license  PHP 3.0 http://www.php.net/license/3_0.txt
 * @link     http://pear.php.net/package/Numbers_Words
 */
class Numbers_Words_cs extends Numbers_Words
{

	// {{{ properties

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

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

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

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

	/**
	 * The sufixes for exponents (singular and plural)
	 * Names partly based on:
	 * http://cs.wikipedia.org/wiki/P%C5%99edpony_soustavy_SI
	 * the rest was translated from lang.en_GB.php
	 * names verified by "Ustav pro jazyk cesky" only up to Septilion
	 * (they could verify only the lingual matter - not the mathematical one)
	 * @var array
	 * @access private
	 */
	var $_exponent = array(
		0 => array(''),
		3 => array('tisíc','tisíce','tisíc'),
		6 => array('milion','miliony','milionù'),
		9 => array('miliarda','miliardy','miliard'),
	   12 => array('bilion','biliony','bilionù'),
	   15 => array('biliarda','biliardy','biliard'),
	   18 => array('trilion','triliony','trilionù'),
	   21 => array('triliarda','triliardy','triliard'),

	   24 => array('kvadrilion','kvadriliony','kvadrilionù'),
	   30 => array('kvintilion','kvintiliony','kvintilionù'),
	   36 => array('sextilion','sextiliony','sextilionù'),
	   42 => array('septilion','septiliony','septilionù'),

	   48 => array('oktilion','oktiliony','oktilionù'),
	   54 => array('nonilion','noniliony','nonilionù'),
	   60 => array('decilion','deciliony','decilionù'),

	   66 => array('undecilion','undeciliony','undecilionù'),
	   72 => array('duodecilion','duodeciliony','duodecilionù'),
	   78 => array('tredecilion','tredeciliony','tredecilionù'),
	   84 => array('kvatrodecilion','kvatrodeciliony','kvatrodecilionù'),
	   90 => array('kvindecilion','kvindeciliony','kvindecilionù'),
	   96 => array('sexdecilion','sexdeciliony','sexdecilionù'),
	  102 => array('septendecilion','septendeciliony','septendecilionù'),
	  108 => array('oktodecilion','oktodeciliony','oktodecilionù'),
	  114 => array('novemdecilion','novemdeciliony','novemdecilionù'),
	  120 => array('vigintilion','vigintiliony','vigintilionù'),
	  192 => array('duotrigintilion','duotrigintiliony','duotrigintilionù'),
	  600 => array('centilion','centiliony','centilionù')

		);

	/**
	 * The array containing the forms of Czech word for "hundred"
	 * @var array
	 * @access private
	 */
	var $_hundreds = array(
		0 => 'sto', 'stì', 'sta', 'set'
	);

	/**
	 * The array containing the digits (indexed by the digits themselves).
	 * @var array
	 * @access private
	 */
	var $_digits = array(
		0 => 'nula', 'jedna', 'dva', 'tøi', 'ètyøi',
		'pìt', '¹est', 'sedm', 'osm', 'devìt'
	);

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

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

	/**
	 * Converts a number to its word representation
	 * in Czech 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 $powsuffix The power name to be added to the end of the return string.
	 *                           Used internally. Optional, defaults to ''.
	 *
	 * @return string  The corresponding word representation
	 *
	 * @access protected
	 * @author Petr 'PePa' Pavel <petr.pavel@pepa.info>
	 * @since  Numbers_Words 0.16.3
	 */
	function _toWords($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 ($h) {
			// inflection of the word "hundred"
			if ($h == 1) {
				$ret .= $this->_sep . $this->_hundreds[0];
			} elseif ($h == 2) {
				$ret .= $this->_sep . "dvì" . $this->_sep . $this->_hundreds[1];
			} elseif ( ($h > 1) && ($h < 5) ) {
				$ret .= $this->_sep . $this->_digits[$h] . $this->_sep . $this->_hundreds[2];
			} else {		//if ($h >= 5)
				$ret .= $this->_sep . $this->_digits[$h] . $this->_sep . $this->_hundreds[3];
			}
			// in English only - add ' and' for [1-9]01..[1-9]99
			// (also for 1001..1099, 10001..10099 but it is harder)
			// for now it is switched off, maybe some language purists
			// can force me to enable it, or to remove it completely
			// if (($t + $d) > 0)
			//   $ret .= $this->_sep . 'and';
		}

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

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

			case 6:
				$ret .= $this->_sep . '¹edesát';
			break;

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

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

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

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

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

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

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

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

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

		if (($t != 1) && ($d > 0) && (($power == 0) || ($num > 1))) {
			$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;
			}

			// inflection of exponental words
			if ($num == 1) {
				$idx = 0;
			} elseif ( (($num > 1) && ($num < 5)) || ((intval("$t$d") > 1) && (intval("$t$d") < 5))) {
				$idx = 1;
			} else {
				$idx = 2;
			}

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

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

		return $ret;
	}
	// }}}
}
