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<?php
/**
* Numbers_Words
*
* PHP version 5
*
* 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 Petr 'PePa' Pavel <petr.pavel@pepa.info>
* @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 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 3.01 http://www.php.net/license/3_01.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;
    }
    // }}}
}
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