Iso8583String.java :  » OSGi » nucleus8583 » org » nucleus8583 » core » Java Open Source

package org.nucleus8583.core;

import java.io.IOException;
import java.io.Reader;
import java.io.Writer;
import java.util.BitSet;

import org.nucleus8583.core.util.FastInteger;

public final class Iso8583String extends Iso8583Field {
  private static final long serialVersionUID = -5615324004502124085L;

  public Iso8583String(int id, int lcount, int length, char align,
      char padWith, String emptyValue) {
    super(id, lcount, length, align, padWith, emptyValue);
  }

  public void pack(Writer writer, BitSet value) throws IOException {
    throw new UnsupportedOperationException();
  }

  public void pack(Writer writer, String value) throws IOException {
    int vlen = value.length();
    if (vlen > length) {
      throw new IllegalArgumentException("value too long, expected "
          + length + " but actual is " + vlen);
    }

    if (lcount > 0) {
      FastInteger.writeUint(writer, vlen, lcount);
      writer.write(value, 0, vlen);
    } else {
      pad(writer, value, vlen);
    }
  }

  public void unpackBinary(Reader reader, BitSet bits) throws IOException {
    throw new UnsupportedOperationException();
  }

  public BitSet unpackBinary(Reader reader) throws IOException {
    throw new UnsupportedOperationException();
  }

  public String unpackString(Reader reader) throws IOException {
    int unpackedLength;

    if (lcount > 0) {
      unpackedLength = FastInteger.readUint(reader, lcount);
    } else {
      unpackedLength = length;
    }

    char[] cbuf = new char[unpackedLength];
    read(reader, cbuf, unpackedLength);

    return lcount > 0 ? new String(cbuf) : new String(unpad(cbuf,
        unpackedLength));
  }
}