// $Id: Syllable.js,v 1.2 2005/09/25 14:52:26 vnagarjuna Exp $ -->

//Copyright 2005 Nagarjuna Venna <vnagarjuna@yahoo.com>

/* ****** BEGIN LICENSE BLOCK ***** 
 *  This file is part of Padma.
 *
 *  Padma 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.

 *  Padma 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 Padma; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * ***** END LICENSE BLOCK ***** */

function Syllable() {
    this.body = "";
    this.prefix_gunintam = "";
    this.gunintam = "";
    this.prefix_vattu = "";
    this.vowel_modifier = "";
    this.cons_modifier = "";
}

Syllable.prototype.update = function (str, type, prefix)
{
    for(var i = 0; i < str.length; ++i) {
        if (i != 0)
            type = Padma.getType(str.charAt(i));
        if (type == Padma.type_accu || type == Padma.type_hallu || type == Padma.type_digit || type == Padma.type_unknown)
            this.body += str.charAt(i);
        else if (type == Padma.type_gunintam) {
            if (prefix)
                this.prefix_gunintam += str.charAt(i);
            else this.gunintam += str.charAt(i);
        }
        else if (type == Padma.type_vattu) {
            if (prefix)
                this.prefix_vattu += str.charAt(i);
            else this.body += str.charAt(i);
        }
        else if (type == Padma.type_accu_mod)
            this.vowel_modifier += str.charAt(i);
        else if (type == Padma.type_hallu_mod)
            this.cons_modifier += str.charAt(i);
    }
}

Syllable.prototype.getLength = function()
{
    return this.body.length + this.prefix_gunintam.length + this.gunintam.length + this.prefix_vattu.length + 
           this.cons_modifier.length + this.vowel_modifier.length;
}

Syllable.prototype.foldGunintam = function()
{
    this.gunintam += this.prefix_gunintam;
    this.prefix_gunintam = "";
}

Syllable.prototype.foldConsonantModifiers = function()
{
    this.body += this.prefix_vattu;
    this.prefix_vattu = "";
}

Syllable.prototype.getSyllable = function()
{
    return this.body + this.cons_modifier + this.gunintam + this.vowel_modifier;
}