<?php
/* vim: set expandtab tabstop=4 softtabstop=4 shiftwidth=4: */
//
// +----------------------------------------------------------------------+
// | PHP version 4                                                        |
// +----------------------------------------------------------------------+
// | Copyright (c) 1997-2003 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.               |
// +----------------------------------------------------------------------+
// | Authors: Petr 'PePa' Pavel <petr.pavel@pepa.info>                    |
// +----------------------------------------------------------------------+
//
// $Id$
//
// Numbers_Words class extension to spell numbers in Czech language.
//

/**
 * 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.
 *
 * @author Petr 'PePa' Pavel
 * @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 $powsuffix The power name to be added to the end of the return string.
     *                        Used internally. Optional, defaults to ''.
     *
     * @return string  The corresponding word representation
     *
     * @access public
     * @author Petr 'PePa' Pavel <petr.pavel@pepa.info>
     * @since  PHP 4.2.3
     */
    function toWords($num, $power = 0, $powsuffix = '') {
//    print "<br>$num,$power,$powsuffix<br>";
      $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 || $d > 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) )
            $idx = 1;
          else		//if ($num >= 5)
            $idx = 2;

        $ret .= $this->_sep . $lev[$idx];
      }
    
      if ($powsuffix != '')
        $ret .= $this->_sep . $powsuffix;
    
      return $ret;
    }
    // }}}
}

?>