1 /* vi: set sw=4 ts=4: */
5 * Copyright (C) tons of folks. Tracking down who wrote what
6 * isn't something I'm going to worry about... If you wrote something
7 * here, please feel free to acknowledge your work.
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 * Based in part on code from sash, Copyright (c) 1999 by David I. Bell
24 * Permission has been granted to redistribute this code under the GPL.
34 char process_escape_sequence(char **ptr)
36 static const char charmap[] = {
37 'a', 'b', 'f', 'n', 'r', 't', 'v', '\\', 0,
38 '\a', '\b', '\f', '\n', '\r', '\t', '\v', '\\', '\\' };
48 for ( num_digits = 0 ; num_digits < 3 ; ++num_digits) {
49 if ((*q < '0') || (*q > '7')) { /* not a digit? */
52 n = n * 8 + (*q++ - '0');
55 if (num_digits == 0) { /* mnemonic escape sequence? */
56 for (p=charmap ; *p ; p++) {
62 n = *(p+(sizeof(charmap)/2));
65 /* doesn't hurt to fall through to here from mnemonic case */
66 if (n > UCHAR_MAX) { /* is octal code too big for a char? */
67 n /= 8; /* adjust value and */
68 --q; /* back up one char */