/*
*
* This file is part of the iText (R) project.
Copyright (c) 1998-2017 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
* as published by the Free Software Foundation with the addition of the
* following permission added to Section 15 as permitted in Section 7(a):
* FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY
* ITEXT GROUP. ITEXT GROUP DISCLAIMS THE WARRANTY OF NON INFRINGEMENT
* OF THIRD PARTY RIGHTS
*
* 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 or write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA, 02110-1301 USA, or download the license from the following URL:
* http://itextpdf.com/terms-of-use/
*
* The interactive user interfaces in modified source and object code versions
* of this program must display Appropriate Legal Notices, as required under
* Section 5 of the GNU Affero General Public License.
*
* In accordance with Section 7(b) of the GNU Affero General Public License,
* a covered work must retain the producer line in every PDF that is created
* or manipulated using iText.
*
* You can be released from the requirements of the license by purchasing
* a commercial license. Buying such a license is mandatory as soon as you
* develop commercial activities involving the iText software without
* disclosing the source code of your own applications.
* These activities include: offering paid services to customers as an ASP,
* serving PDFs on the fly in a web application, shipping iText with a closed
* source product.
*
* For more information, please contact iText Software Corp. at this
* address: sales@itextpdf.com
*/
package com.itextpdf.text.zugferd.checkers;
import com.itextpdf.text.zugferd.exceptions.InvalidCodeException;
/**
* Abstract superclass of a series of code validation classes.
*/
public abstract class CodeValidation {
/**
* Checks if a specific code is valid.
* @param code the value you want to check
* @return true if the code is valid
*/
public abstract boolean isValid(String code);
/**
* Checks if a specific code is valid.
* @param code the value you want to check
* @return the code that has been checked
* @throws com.itextpdf.text.zugferd.exceptions.InvalidCodeException
* reveals the reason why the code isn't valid
*/
public String check(String code) throws InvalidCodeException {
if (code == null || !isValid(code))
throw new InvalidCodeException(code, this.getClass().getName());
return code;
}
/**
* Checks the length of a code and if a code consists of numbers only.
* @param code the code that needs to be checked
* @param digits the expected length of the code
* @return true if the code is numeric and has the expected length
*/
public boolean isNumeric(String code, int digits) {
if (code.length() != digits) return false;
for (char c : code.toCharArray())
if (c < 48 || c > 57) return false;
return true;
}
/**
* Checks the length of a code and if a code consists of uppercase letters
* from A to Z.
* @param code the code that needs to be checked
* @param chars the expected length of the code
* @return true if the code consists of letters from A to Z and has the expected length
*/
public boolean isUppercase(String code, int chars) {
if (code.length() != chars) return false;
for (char c : code.toCharArray())
if (c < 65 || c > 90) return false;
return true;
}
/**
* Checks the length of a code and if a code consists of lowercase letters
* from a to z.
* @param code the code that needs to be checked
* @param chars the expected length of the code
* @return true if the code consists of letters from a to z and has the expected length
*/
public boolean isLowercase(String code, int chars) {
if (code.length() != chars) return false;
for (char c : code.toCharArray())
if (c < 97 || c > 122) return false;
return true;
}
}