87 lines
1.6 KiB
Java
87 lines
1.6 KiB
Java
/* Copyright (C) 1999 Red Hat, Inc.
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This file is part of libgcj.
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This software is copyrighted work licensed under the terms of the
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Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
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details. */
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package gnu.gcj.convert;
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/**
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* Convert Unicode to Ascii with \ u XXXX-escapes.
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* @author Per Bothner <bothner@cygnus.com>
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* @date April 1999.
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*/
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public class Output_JavaSrc extends UnicodeToBytes
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{
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public String getName() { return "JavaSrc"; }
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// Number of bytes remaining before pending_char has been written.
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int todo;
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int pending_char;
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public int write (char[] inbuffer, int inpos, int inlength)
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{
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int start_pos = inpos;
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int avail = buf.length - count;
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for (;;)
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{
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if (avail == 0)
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break;
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switch (todo)
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{
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case 1:
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if (pending_char == '\\')
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{
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buf[count++] = (byte) '\\';
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avail--;
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todo = 0;
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continue;
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}
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/* ... else fall through ... */
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case 2:
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case 3:
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case 4:
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todo--;
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int digit = ((int) pending_char >> (todo * 4)) & 0xF;
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buf[count++] = (byte) Character.forDigit(digit, 16);
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avail--;
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continue;
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case 5:
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buf[count++] = (byte) 'u';
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avail--;
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todo = 4;
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continue;
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default:
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;
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}
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if (inlength == 0)
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break;
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char ch = inbuffer[inpos++];
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inlength--;
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if (ch == '\\')
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{
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buf[count++] = (byte) '\\';
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pending_char = ch;
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todo = 1;
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avail--;
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}
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else if (ch < 127)
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{
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buf[count++] = (byte) ch;
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avail--;
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}
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else
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{
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buf[count++] = (byte) '\\';
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pending_char = ch;
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todo = 5;
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avail--;
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}
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}
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return inpos - start_pos;
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}
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}
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