1/* Copyright (C) 1991-2005 Free Software Foundation, Inc.
2
3   This file is part of GNU Bash, the Bourne Again SHell.
4
5   Bash is free software; you can redistribute it and/or modify it under
6   the terms of the GNU General Public License as published by the Free
7   Software Foundation; either version 2, or (at your option) any later
8   version.
9
10   Bash is distributed in the hope that it will be useful, but WITHOUT ANY
11   WARRANTY; without even the implied warranty of MERCHANTABILITY or
12   FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
13   for more details.
14
15   You should have received a copy of the GNU General Public License along
16   with Bash; see the file COPYING.  If not, write to the Free Software
17   Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */
18
19static int INTERNAL_GLOB_PATTERN_P __P((const CHAR *));
20
21/* Return nonzero if PATTERN has any special globbing chars in it.
22   Compiled twice, once each for single-byte and multibyte characters. */
23static int
24INTERNAL_GLOB_PATTERN_P (pattern)
25     const CHAR *pattern;
26{
27  register const CHAR *p;
28  register CHAR c;
29  int bopen;
30
31  p = pattern;
32  bopen = 0;
33
34  while ((c = *p++) != L('\0'))
35    switch (c)
36      {
37      case L('?'):
38      case L('*'):
39	return 1;
40
41      case L('['):      /* Only accept an open brace if there is a close */
42	bopen++;        /* brace to match it.  Bracket expressions must be */
43	continue;       /* complete, according to Posix.2 */
44      case L(']'):
45	if (bopen)
46	  return 1;
47	continue;
48
49      case L('+'):         /* extended matching operators */
50      case L('@'):
51      case L('!'):
52	if (*p == L('('))  /*) */
53	  return 1;
54	continue;
55
56      case L('\\'):
57	if (*p++ == L('\0'))
58	  return 0;
59      }
60
61  return 0;
62}
63
64#undef INTERNAL_GLOB_PATTERN_P
65#undef L
66#undef INT
67#undef CHAR
68