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/* 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;
}
}
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