com.itextpdf.text.zugferd.checkers.NumberChecker Maven / Gradle / Ivy
/*
* $Id: 47a4bebee600397008b422337122fe924e8a9dec $
*
* This file is part of the iText (R) project.
* Copyright (c) 1998-2016 iText Group NV
* Authors: Bruno Lowagie, et al.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License version 3
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* Section 5 of the GNU Affero General Public License.
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* or manipulated using iText.
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package com.itextpdf.text.zugferd.checkers;
/**
* Provide a means to check if a String consist of characters from 0 to 9
* and a decimal point in case a decimal is expected.
*/
public class NumberChecker extends CodeValidation {
public final static int INTEGER = 0;
public final static int ANY_DECIMALS = 1;
public final static int TWO_DECIMALS = 2;
public final static int FOUR_DECIMALS = 4;
/** The type of checker: INTEGER, ANY_DECIMALS, TWO_DECIMALS, FOUR_DECIMALS. */
protected int type;
/**
* Creates a specific number checker.
* @param type the type of checker that needs to be created:
* INTEGER, ANY_DECIMALS, TWO_DECIMALS, or FOUR_DECIMALS
*/
public NumberChecker(int type) {
this.type = type;
}
@Override
public boolean isValid(String code) {
if (type == INTEGER)
return isNumeric(code, code.length());
if (code.endsWith("."))
return false;
int pos = code.indexOf(".");
if (pos < 1)
return false;
String part1 = code.substring(0, pos);
if (!isNumeric(part1, part1.length()))
return false;
String part2 = code.substring(pos + 1);
switch(type) {
case TWO_DECIMALS:
return isNumeric(part2, 2);
case FOUR_DECIMALS:
return isNumeric(part2, 4);
default:
return isNumeric(part2, part2.length());
}
}
}