| /* 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; |
| } |
| } |