AccountFormat.java

Go to the documentation of this file.

/*
 * Turró i Cutiller Foundation. License notice.
 * Copyright (C) 2011 Lluis Turró Cutiller <http://www.turro.org/>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.turro.financials.model;
 
public class AccountFormat {
 
  public static final int ACCOUNT_LENGTH = 10;
 
  public static String simplify(String a) {
    if(!isPartialAccount(a)) return a;
    StringBuilder text = new StringBuilder(a);
    int i = 4;
    while(i < text.length() && text.charAt(i) == '0')
      i++;
    i--;
    while(i > -1 && i < text.length() && text.charAt(i) == '0')
      text.deleteCharAt(i--);
    if(i < text.length())
      text.insert(i + 1, '.');
    return text.toString();
  }
 
  public static String expand(String a) {
    if((a == null) || (a.length() == 0))
      return a;
    StringBuilder text = new StringBuilder(a.trim());
    int i;
    if((i = text.lastIndexOf(".")) > -1) {
      text.deleteCharAt(i);
      while(text.length() < ACCOUNT_LENGTH)
        text.insert(i, '0');
    }
    while(text.length() < ACCOUNT_LENGTH)
      text.append('0');
    while(text.length() > ACCOUNT_LENGTH) {
      i = text.lastIndexOf("0");
      if(i > -1)
        text.deleteCharAt(i);
      else
        break;
    }
    return text.toString();
  }
 
  public static boolean isAccount(String a) {
    if(a == null) return false;
    a = expand(a);
    if(a.length() != ACCOUNT_LENGTH) return false;
    for(int i = 0; i < ACCOUNT_LENGTH; i++)
      if((a.charAt(i) < '0') || (a.charAt(i) > '9'))
        return false;
    return true;
  }
 
  public static boolean isPartialAccount(String a) {
    if(a == null) return false;
    if(a.length() >= 10) return false;
    for(int i = 0; i < a.length(); i++)
      if(((a.charAt(i) < '0') || (a.charAt(i) > '9')) && !(a.charAt(i) == '.'))
        return false;
    return true;
  }
 
  public static String trim(String a) {
    StringBuilder text = new StringBuilder(a);
    while((text.length() > 0) && (text.charAt(text.length() - 1) == '0'))
      text.deleteCharAt(text.length() - 1);
    return text.toString();
  }
 
  private AccountFormat() {
  }
 
}