<?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   Filippo Beltramini <phil@esight.it>
 * @author   Davide Caironi     <cairo@esight.it>
 * @license  PHP 3.0 http://www.php.net/license/3_0.txt
 * @version  SVN: $Id: lang.it_IT.php 302816 2010-08-26 16:02:29Z ifeghali $
 * @link     http://pear.php.net/package/Numbers_Words
 */

/**
 * Class for translating numbers into Italian.
 *
 * @author Filippo Beltramini <phil@esight.it>
 * @author Davide Caironi     <cairo@esight.it>
 * @package Numbers_Words
 */

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

/**
 * Class for translating numbers into Italian.
 * It supports up to quadrilions
 *
 * @category Numbers
 * @package  Numbers_Words
 * @author   Filippo Beltramini <phil@esight.it>
 * @author   Davide Caironi     <cairo@esight.it>
 * @license  PHP 3.0 http://www.php.net/license/3_0.txt
 * @link     http://pear.php.net/package/Numbers_Words
 */

class Numbers_Words_it_IT extends Numbers_Words
{
	// {{{ properties

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

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

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

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

	/**
	 * The sufixes for exponents (singular and plural)
	 * @var array
	 * @access private
	 */
	var $_exponent = array(
		0 => array('',''),
		3 => array('mille','mila'),
		6 => array('milione','miloni'),
	   12 => array('miliardo','miliardi'),
	   18 => array('trillone','trilloni'),
	   24 => array('quadrilione','quadrilioni'),
		);
	/**
	 * The array containing the digits (indexed by the digits themselves).
	 * @var array
	 * @access private
	 */
	var $_digits = array(
	  0 => 'zero', 'uno', 'due', 'tre', 'quattro',
	   'cinque', 'sei', 'sette', 'otto', 'nove'
	);

	/**
	 * The word separator
	 * @var string
	 * @access private
	 */
	var $_sep = '';
	// }}}
	// {{{ _toWords()
	/**
	 * Converts a number to its word representation
	 * in italiano.
	 *
	 * @param integer $num   An integer between -infinity and infinity inclusive :)
	 *                       that should be converted to a words representation
	 * @param integer $power The power of ten for the rest of the number to the right.
	 *                       For example toWords(12,3) should give "doce mil".
	 *                       Optional, defaults to 0.
	 *
	 * @return string  The corresponding word representation
	 *
	 * @access protected
	 * @author Filippo Beltramini
	 * @since  Numbers_Words 0.16.3
	 */
	function _toWords($num, $power = 0)
	{
		// The return string;
		$ret = '';

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


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

		if (strlen($num) > 6) {
			$current_power = 6;
			// check for highest power
			if (isset($this->_exponent[$power])) {
				// convert the number above the first 6 digits
				// with it's corresponding $power.
				$snum = substr($num, 0, -6);
				$snum = preg_replace('/^0+/', '', $snum);
				if ($snum !== '') {
					$ret .= $this->_toWords($snum, $power + 6);
				}
			}
			$num = substr($num, -6);
			if ($num == 0) {
				return $ret;
			}
		} elseif ($num == 0 || $num == '') {
			return(' '.$this->_digits[0].' ');
			$current_power = strlen($num);
		} else {
			$current_power = strlen($num);
		}

		// See if we need "thousands"
		$thousands = floor($num / 1000);
		if ($thousands == 1) {
			$ret .= $this->_sep . 'mille' . $this->_sep;
		} elseif ($thousands > 1) {
			$ret .= $this->_toWords($thousands, 3) . $this->_sep;//. 'mil' . $this->_sep;
		}

		// values for digits, tens and hundreds
		$h = floor(($num / 100) % 10);
		$t = floor(($num / 10) % 10);
		$d = floor($num % 10);

		// centinaia: duecento, trecento, etc...
		switch ($h) {
			case 1:
				if (($d == 0) and ($t == 0)) { // is it's '100' use 'cien'
					$ret .= $this->_sep . 'cento';
				} else {
					$ret .= $this->_sep . 'cento';
				}
			break;
			case 2:
			case 3:
			case 4:
			case 6:
			case 8:
				$ret .= $this->_sep . $this->_digits[$h] . 'cento';
			break;
			case 5:
				$ret .= $this->_sep . 'cinquecento';
			break;
			case 7:
				$ret .= $this->_sep . 'settecento';
			break;
			case 9:
				$ret .= $this->_sep . 'novecento';
			break;
		}

		// decine: venti trenta, etc...
		switch ($t) {
			case 9:
				switch ($d) {
					case 1:
					case 8:
						$ret .= $this->_sep . 'novant' ;
					break;
					default:
						$ret .= $this->_sep . 'novanta' ;
					break;
				}

			break;
			case 8:
				switch ($d) {
					case 1:
					case 8:
						$ret .= $this->_sep . 'ottant' ;
					break;
					default:
						$ret .= $this->_sep . 'ottanta' ;
					break;
				}

			break;
			case 7:
				switch ($d) {
					case 1:
					case 8:
						$ret .= $this->_sep . 'settant' ;
					break;
					default:
						$ret .= $this->_sep . 'settanta' ;
					break;
				}
			break;
			case 6:
				switch ($d) {
					case 1:
					case 8:
						$ret .= $this->_sep . 'sessant' ;
					break;
					default:
						$ret .= $this->_sep . 'sessanta' ;
					break;
				}
			break;
			case 5:
				switch ($d) {
					case 1:
					case 8:
						$ret .= $this->_sep . 'cinquant' ;
					break;
					default:
						$ret .= $this->_sep . 'cinquanta' ;
					break;
				}
			break;
			case 4:
				switch ($d) {
					case 1:
					case 8:
						$ret .= $this->_sep . 'quarant' ;
					break;
					default:
						$ret .= $this->_sep . 'quaranta' ;
					break;
				}
			break;
			case 3:
				switch ($d) {
					case 1:
					case 8:
						$ret .= $this->_sep . 'trent' ;
					break;
					default:
						$ret .= $this->_sep . 'trenta' ;
					break;
				}
			break;
			case 2:
				switch ($d) {
					case 0:
						$ret .= $this->_sep . 'venti';
					break;
					case 1:
					case 8:
						$ret .= $this->_sep . 'vent' . $this->_digits[$d];
					break;
					default:
						$ret .= $this->_sep . 'venti'  . $this->_digits[$d];
					break;
				}


			break;

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

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

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

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

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

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

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

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

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

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

		// add digits only if it is a multiple of 10 and not 1x or 2x
		if (($t != 1) and ($t != 2) and ($d > 0)) {
			 // don't add 'e' for numbers below 10
			if ($t != 0) {
				// use 'un' instead of 'uno' when there is a suffix ('mila', 'milloni', etc...)
				if (($power > 0) and ($d == 1)) {
					$ret .= $this->_sep.' e un';
				} else {
					$ret .= $this->_sep.''.$this->_digits[$d];
				}
			} else {
				if (($power > 0) and ($d == 1)) {
					$ret .= $this->_sep.'un ';
				} 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;
			}

			// if it's only one use the singular suffix
			if (($d == 1) and ($t == 0) and ($h == 0)) {
				$suffix = $lev[0];
			} else {
				$suffix = $lev[1];
			}
			if ($num != 0) {
				$ret .= $this->_sep . $suffix;
			}
		}

		return $ret;
	}
	// }}}
}