#=====================================================================
# SQL-Ledger Accounting
# Copyright (C) 2002
#
#  Author: Dieter Simader
#   Email: dsimader@sql-ledger.org
#     Web: http://www.sql-ledger.org
#
#  Language: Spanish UTF-8
#  Contributors:
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#======================================================================
 
 
sub init {
  my $self = shift;
 
  %{ $self->{numbername} } =
                   (0 => 'cero',
                    1 => 'un',
                 '1o' => 'uno',
                    2 => 'dos',
                    3 => 'tres',
                    4 => 'cuatro',
                    5 => 'cinco',
                    6 => 'seis',
                    7 => 'siete',
                    8 => 'ocho',
                    9 => 'nueve',
                   10 => 'diez',
                   11 => 'once',
                   12 => 'doce',
                   13 => 'trece',
                   14 => 'catorce',
                   15 => 'quince',
                   16 => 'dieciséis',
                   17 => 'diecisiete',
                   18 => 'dieciocho',
                   19 => 'diecinueve',
                   20 => 'veinte',
                   21 => 'veintiún',
                '21o' => 'veintiuno',
                   22 => 'veintidós',
                   23 => 'veintitrés',
                   24 => 'veinticuatro',
                   25 => 'veinticinco',
                   26 => 'veintiséis',
                   27 => 'veintisiete',
                   28 => 'veintiocho',
                   29 => 'veintinueve',
                   30 => 'treinta',
                   40 => 'cuarenta',
                   50 => 'cincuenta',
                   60 => 'sesenta',
                   70 => 'setenta',
                   80 => 'ochenta',
                   90 => 'noventa',
                  500 => 'quinientos',
                  700 => 'setecientos',
                  900 => 'novecientos',
                10**2 => 'ciento',
                10**3 => 'mil',
                10**6 => 'millón',
               10**12 => 'billón',
                );
 
}
 
 
sub num2text {
  my ($self, $amount) = @_;
 
  return $self->{numbername}{0} unless $amount;
 
  my @textnumber = ();
 
  # split amount into chunks of 3
  my @num = reverse split //, abs($amount);
  my @numblock = ();
  my $stripun = 0;
  my @a = ();
  my $i;
 
  while (@num) {
    @a = ();
    for (1 .. 3) {
      push @a, shift @num;
    }
    push @numblock, join / /, reverse @a;
  }
   
  # special case for 1000
  if ($numblock[1] eq '1' && $numblock[0] gt '000') {
    # remove first array element from textnumber
    $stripun = 1;
  }
 
  while (@numblock) {
 
    $i = $#numblock;
    @num = split //, $numblock[$i];
     
    $numblock[$i] *= 1;
 
    if ($numblock[$i] == 0) {
      pop @numblock;
      next;
    }
     
    if ($numblock[$i] > 99) {
      if ($num[0] == 1) {
        push @textnumber, $self->{numbername}{10**2};
      } else {
        # special case for 500, 700, 900
        if (grep /$num[0]/, (5,7,9)) {
          push @textnumber, $self->{numbername}{"${num[0]}00"};
           
        } else {
 
          # the one from hundreds, append cientos
          push @textnumber, $self->{numbername}{$num[0]}.$self->{numbername}{10**2}.'s';
           
        }
      }
      
      # reduce numblock
      $numblock[$i] -= $num[0] * 100;
    }
     
    if ($numblock[$i] > 9) {
      # tens
      push @textnumber, $self->format_ten($numblock[$i], $i);
    } elsif ($numblock[$i] > 0) {
      # ones
      $num = $numblock[$i];
      $num .= 'o' if ($num == 1 && $i == 0);
      push @textnumber, $self->{numbername}{$num};
    }
     
    # add thousand, million
    if ($i) {
      $num = 10**($i * 3);
      if ($numblock[$i] > 1) {
        if ($i == 2 || $i == 4) {
          $a = $self->{numbername}{$num}."es";
          $a =~ s/ó/o/;
          push @textnumber, $a;
        } elsif ($i == 3) {
          $num = 10**($i * 2);
          $a = "$self->{10**3} $self->{numbername}{$num}"."es";
          $a =~ s/ó/o/;
          push @textnumber, $a;
        } else {
          if ($i == 1) {
            push @textnumber, $self->{numbername}{$num};
          } else {
            push @textnumber, $self->{numbername}{$num}.'s';
          }
        }
      } else {
        push @textnumber, $self->{numbername}{$num};
      }
    }
       
    pop @numblock;
     
  }
 
  shift @textnumber if $stripun;
 
  join ' ', @textnumber;
 
}
 
 
sub format_ten {
  my ($self, $amount, $i) = @_;
   
  my $textnumber = "";
  my @num = split //, $amount;
 
  if ($amount > 30) {
    $textnumber = $self->{numbername}{$num[0]*10};
    $amount = $num[1];
  } else {
    $amount .= 'o' if ($num[1] == 1 && $i == 0);
    $textnumber = $self->{numbername}{$amount};
    $amount = 0;
  }
 
  $textnumber .= " y ".$self->{numbername}{$amount} if $amount;
 
  $textnumber;
   
}
 
 
1;