@Override
public int unpack(ISOComponent m, byte[] b) throws ISOException {
LogEvent evt = new LogEvent(this, "unpack");
int consumed = 0;
ISOComponent c;
// Unpack the fields
while (consumed < b.length) {
// Determine current tag
int i = consumed == 0 && fld[0] != null ? 0 : tagPrefixer.decodeLength(b, consumed);
if (!(i < fld.length) || fld[i] == null)
throw new ISOException("Unsupported sub-field " + i + " unpacking field " + m.getKey());
c = fld[i].createComponent(i);
consumed += fld[i].unpack(c, b, consumed);
if (logger != null) {
evt.addMessage(
"<unpack fld=\"" + i + "\" packager=\"" + fld[i].getClass().getName() + "\">");
evt.addMessage(" <value>" + c.getValue().toString() + "</value>");
evt.addMessage("</unpack>");
}
m.set(c);
}
Logger.log(evt);
return consumed;
}
/**
* @param c - a component
* @return packed component
* @throws org.jpos.iso.ISOException
*/
public byte[] pack(ISOComponent c) throws ISOException {
int len;
byte[] s = c.getBytes();
if ((len = s.length) > getLength()) {
throw new ISOException(
"Invalid length "
+ len
+ " packing IF_FSTBINARY field "
+ c.getKey()
+ " max length="
+ getLength());
}
byte[] b = new byte[s.length + 1];
System.arraycopy(s, 0, b, 0, s.length);
b[b.length - 2] = terminator;
return b;
}
@Override
public byte[] pack(ISOComponent c) throws ISOException {
LogEvent evt = new LogEvent(this, "pack");
try {
int len = 0;
Map tab = c.getChildren();
List<byte[]> l = new ArrayList();
for (Map.Entry ent : (Set<Map.Entry>) tab.entrySet()) {
Integer i = (Integer) ent.getKey();
if (i < 0) continue;
if (fld[i] == null)
throw new ISOException("Unsupported sub-field " + i + " packing field " + c.getKey());
if (ent.getValue() instanceof ISOComponent)
try {
ISOComponent f = (ISOComponent) ent.getValue();
byte[] b = fld[i].pack(f);
len += b.length;
l.add(b);
} catch (Exception e) {
evt.addMessage("error packing subfield " + i);
evt.addMessage(c);
evt.addMessage(e);
throw e;
}
}
int k = 0;
byte[] d = new byte[len];
for (byte[] b : l) {
System.arraycopy(b, 0, d, k, b.length);
k += b.length;
}
if (logger != null) // save a few CPU cycle if no logger available
evt.addMessage(ISOUtil.hexString(d));
return d;
} catch (Exception ex) {
throw new ISOException(ex);
}
}