67 lines
2.5 KiB
Java
67 lines
2.5 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 class used to parse ALPHA fields.
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*
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* @author Enrique Zamudio
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*/
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public class AlphaParseInfo extends AlphaNumericFieldParseInfo {
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public AlphaParseInfo(int len) {
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super(IsoType.ALPHA, len);
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}
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@Override
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public <T> IsoValue<?> parseBinary(final int field, final byte[] buf, final int pos,
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final CustomField<T> custom)
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throws ParseException, UnsupportedEncodingException {
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if (pos < 0) {
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throw new ParseException(String.format("Invalid bin ALPHA field %d position %d",
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field, pos), pos);
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} else if (pos+length > buf.length) {
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throw new ParseException(String.format(
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"Insufficient data for bin %s field %d of length %d, pos %d",
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type, field, length, pos), pos);
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}
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try {
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if (custom == null) {
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return new IsoValue<>(type, new String(buf, pos, length, getCharacterEncoding()), length, null);
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} else {
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T decoded = custom.decodeField(new String(buf, pos, length, getCharacterEncoding()));
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return decoded == null ?
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new IsoValue<>(type, new String(buf, pos, length, getCharacterEncoding()), length, null) :
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new IsoValue<>(type, decoded, length, custom);
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}
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} catch (IndexOutOfBoundsException ex) {
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throw new ParseException(String.format(
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"Insufficient data for bin %s field %d of length %d, pos %d",
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type, field, length, pos), pos);
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}
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}
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}
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