chochos
3efc794f3e
git-svn-id: https://j8583.svn.sourceforge.net/svnroot/j8583/j8583@67 db60a039-f72e-0410-b1d2-baa000846441
93 lines
3.3 KiB
Java
93 lines
3.3 KiB
Java
/*
|
|
j8583 A Java implementation of the ISO8583 protocol
|
|
Copyright (C) 2011 Enrique Zamudio Lopez
|
|
|
|
This library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
This library 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
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with this library; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
|
|
*/
|
|
package com.solab.iso8583.parse;
|
|
|
|
import java.text.ParseException;
|
|
|
|
import com.solab.iso8583.CustomField;
|
|
import com.solab.iso8583.IsoType;
|
|
import com.solab.iso8583.IsoValue;
|
|
import com.solab.iso8583.util.HexCodec;
|
|
|
|
/** This class is used to parse fields of type LLLBIN.
|
|
*
|
|
* @author Enrique Zamudio
|
|
*/
|
|
public class LllbinParseInfo extends FieldParseInfo {
|
|
|
|
|
|
public LllbinParseInfo() {
|
|
super(IsoType.LLLBIN, 0);
|
|
}
|
|
|
|
@Override
|
|
public <T> IsoValue<?> parse(byte[] buf, int pos, CustomField<T> custom)
|
|
throws ParseException {
|
|
if (pos < 0) {
|
|
throw new ParseException(String.format("Invalid position %d", pos), pos);
|
|
}
|
|
if (!(Character.isDigit(buf[pos]) && Character.isDigit(buf[pos+1]) && Character.isDigit(buf[pos+2]))) {
|
|
throw new ParseException(String.format("Invalid LLLBIN length '%s' pos %d", new String(buf, pos, 3), pos), pos);
|
|
}
|
|
length = ((buf[pos] - 48) * 100) + ((buf[pos + 1] - 48) * 10) + (buf[pos + 2] - 48);
|
|
if (length < 0) {
|
|
throw new ParseException(String.format("Invalid LLLBIN length %d pos %d", length, pos), pos);
|
|
}
|
|
if (length+pos+3 > buf.length) {
|
|
throw new ParseException(String.format("Insufficient data for LLLBIN field, pos %d", pos), pos);
|
|
}
|
|
byte[] binval = length == 0 ? new byte[0] : HexCodec.hexDecode(new String(buf, pos + 3, length));
|
|
if (custom == null) {
|
|
return new IsoValue<byte[]>(type, binval, binval.length, null);
|
|
} else {
|
|
IsoValue<T> v = new IsoValue<T>(type, custom.decodeField(
|
|
length == 0 ? "" : new String(buf, pos + 3, length)), length, custom);
|
|
if (v.getValue() == null) {
|
|
//problems decoding? return the string
|
|
return new IsoValue<byte[]>(type, binval, binval.length, null);
|
|
}
|
|
return v;
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public <T> IsoValue<?> parseBinary(byte[] buf, int pos,
|
|
CustomField<T> custom) throws ParseException {
|
|
length = ((buf[pos] & 0x0f) * 100) + (((buf[pos + 1] & 0xf0) >> 4) * 10) + (buf[pos + 1] & 0x0f);
|
|
if (length < 0) {
|
|
throw new ParseException(String.format("Invalid LLLBIN length %d pos %d", length, pos), pos);
|
|
}
|
|
if (length+pos+2 > buf.length) {
|
|
throw new ParseException(String.format("Insufficient data for LLLBIN field, pos %d", pos), pos);
|
|
}
|
|
byte[] _v = new byte[length];
|
|
System.arraycopy(buf, pos+2, _v, 0, length);
|
|
if (custom == null) {
|
|
return new IsoValue<byte[]>(type, _v, null);
|
|
} else {
|
|
IsoValue<T> v = new IsoValue<T>(type, custom.decodeField(HexCodec.hexEncode(_v)), custom);
|
|
if (v.getValue() == null) {
|
|
return new IsoValue<byte[]>(type, _v, null);
|
|
}
|
|
return v;
|
|
}
|
|
}
|
|
|
|
}
|