chochos
5c4259eba3
Several methods now have an additional encoding parameter (just a String, not directly a Charset), but the default is always the JVM's default encoding (taken from the property 'file.encoding'). git-svn-id: https://j8583.svn.sourceforge.net/svnroot/j8583/j8583@70 db60a039-f72e-0410-b1d2-baa000846441
62 lines
2.1 KiB
Java
62 lines
2.1 KiB
Java
/*
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j8583 A Java implementation of the ISO8583 protocol
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Copyright (C) 2011 Enrique Zamudio Lopez
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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package com.solab.iso8583.parse;
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import java.io.UnsupportedEncodingException;
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import java.text.ParseException;
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import com.solab.iso8583.CustomField;
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import com.solab.iso8583.IsoType;
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import com.solab.iso8583.IsoValue;
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/** This is the common abstract superclass to parse ALPHA and NUMERIC field types.
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*
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* @author Enrique Zamudio
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*/
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public abstract class AlphaNumericFieldParseInfo extends FieldParseInfo {
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public AlphaNumericFieldParseInfo(IsoType t, int len) {
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super(t, len);
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}
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public <T extends Object> IsoValue<?> parse(byte[] buf, int pos, CustomField<T> custom) throws ParseException, UnsupportedEncodingException {
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if (pos < 0) {
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throw new ParseException(String.format("Invalid position %d", pos), pos);
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}
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if (pos+length > buf.length) {
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throw new ParseException(String.format("Insufficient data for %s field of length %d, pos %d",
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type, length, pos), pos);
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}
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String _v = new String(buf, pos, length, getCharacterEncoding());
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if (_v.length() != length) {
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_v = new String(buf, pos, buf.length-pos, getCharacterEncoding()).substring(0, length);
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}
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if (custom == null) {
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return new IsoValue<String>(type, _v, length, null);
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} else {
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IsoValue<T> v = new IsoValue<T>(type, custom.decodeField(_v), length, custom);
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if (v.getValue() == null) {
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return new IsoValue<String>(type, _v, length, null);
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}
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return v;
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}
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}
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}
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