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/* Copyright (C) 2004  Free Software Foundation

   This file is part of libgcj.

This software is copyrighted work licensed under the terms of the

Libgcj License.  Please consult the file "LIBGCJ_LICENSE" for

details.  */

package gnu.gcj.convert;

public class Input_UnicodeBig extends BytesToUnicode

{

  /** 0, 8, or 16 bits of a partially constructed character. */

  char partial;

  /** How many bytes of partial are valid. */

  int partial_count;

  public String getName() { return "UnicodeBig"; }

  public int read (char[] outbuffer, int outpos, int count)

  {

    int origcount = count;

    for (;;)

      {

        if (partial_count == 2)

          {

            if (count == 0)

              break;

            if (partial == 0xFEFF)

              ; // drop byte order mark

            // else if (partial >= 0xFFFe)  ERROR;

            else

              outbuffer[outpos++] = partial;

            count--;

            partial_count = 0;

            partial = 0;

          }

        else if (inpos >= inlength)

          break;

        else

          {

            int b = inbuffer[inpos++] & 0xFF;

            partial = (char) (((int) partial << 8) + b);

            partial_count++;

          }

      }

    return origcount - count;

  }

}