Subversion Repositories openrisc

/* Copyright (C) 1999  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;

/**

 * Convert Unicode to Ascii with \ u XXXX-escapes.

 * @author Per Bothner <bothner@cygnus.com>

 * @date April 1999.

 */

public class Output_JavaSrc extends UnicodeToBytes

{

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

  // Number of bytes remaining before pending_char has been written.

  int todo;

 int pending_char;

  public int write (char[] inbuffer, int inpos, int inlength)

  {

    int start_pos = inpos;

    int avail = buf.length - count;

    for (;;)

      {

        if (avail == 0)

          break;

        switch (todo)

          {

          case 1:

            if (pending_char == '\\')

              {

                buf[count++] = (byte) '\\';

                avail--;

                todo = 0;

                continue;

              }

            /* ... else fall through ... */

          case 2:

          case 3:

          case 4:

            todo--;

            int digit = ((int) pending_char >> (todo * 4)) & 0xF;

            buf[count++] = (byte) Character.forDigit(digit, 16);

            avail--;

            continue;

          case 5:

            buf[count++] = (byte) 'u';

            avail--;

            todo = 4;

            continue;

          default:

            ;

          }

        if (inlength == 0)

          break;

        char ch = inbuffer[inpos++];

        inlength--;

        if (ch == '\\')

          {

            buf[count++] = (byte) '\\';

            pending_char = ch;

            todo = 1;

            avail--;

          }

        else if (ch < 127)

          {

            buf[count++] = (byte) ch;

            avail--;

          }

        else

          {

            buf[count++] = (byte) '\\';

            pending_char = ch;

            todo = 5;

            avail--;

          }

      }

    return inpos - start_pos;

  }

}