summaryrefslogtreecommitdiffstats
path: root/m4/fnmatch.m4
blob: c264ca71f971c20821fcbc65af75d60fe6a9dcf8 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
# Check for fnmatch - serial 13.  -*- coding: utf-8 -*-

# Copyright (C) 2000-2007, 2009-2019 Free Software Foundation, Inc.
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.

# Autoconf defines AC_FUNC_FNMATCH, but that is obsolescent.
# New applications should use the macros below instead.

# Request a POSIX compliant fnmatch function.
AC_DEFUN([gl_FUNC_FNMATCH_POSIX],
[
  m4_divert_text([DEFAULTS], [gl_fnmatch_required=POSIX])

  AC_REQUIRE([gl_FNMATCH_H])
  gl_fnmatch_required_lowercase=`
    echo $gl_fnmatch_required | LC_ALL=C tr '[[A-Z]]' '[[a-z]]'
  `
  AC_CHECK_FUNCS_ONCE([fnmatch])
  if test $ac_cv_func_fnmatch = no; then
    HAVE_FNMATCH=0
  else
    gl_fnmatch_cache_var="gl_cv_func_fnmatch_${gl_fnmatch_required_lowercase}"
    AC_CACHE_CHECK([for working $gl_fnmatch_required fnmatch],
      [$gl_fnmatch_cache_var],
      [dnl Some versions of Solaris, SCO, and the GNU C Library
       dnl have a broken or incompatible fnmatch.
       dnl So we run a test program.  If we are cross-compiling, take no chance.
       dnl Thanks to John Oleynick, François Pinard, and Paul Eggert for this
       dnl test.
       if test $gl_fnmatch_required = GNU; then
         gl_fnmatch_gnu_start=
         gl_fnmatch_gnu_end=
       else
         gl_fnmatch_gnu_start='#if 0'
         gl_fnmatch_gnu_end='#endif'
       fi
       AC_RUN_IFELSE(
         [AC_LANG_PROGRAM(
            [[#include <fnmatch.h>
              static int
              y (char const *pattern, char const *string, int flags)
              {
                return fnmatch (pattern, string, flags) == 0;
              }
              static int
              n (char const *pattern, char const *string, int flags)
              {
                return fnmatch (pattern, string, flags) == FNM_NOMATCH;
              }
            ]],
            [[char const *Apat = 'A' < '\\\\' ? "[A-\\\\\\\\]" : "[\\\\\\\\-A]";
              char const *apat = 'a' < '\\\\' ? "[a-\\\\\\\\]" : "[\\\\\\\\-a]";
              static char const A_1[] = { 'A' - 1, 0 };
              static char const A01[] = { 'A' + 1, 0 };
              static char const a_1[] = { 'a' - 1, 0 };
              static char const a01[] = { 'a' + 1, 0 };
              static char const bs_1[] = { '\\\\' - 1, 0 };
              static char const bs01[] = { '\\\\' + 1, 0 };
              int result = 0;
              if (!n ("a*", "", 0))
                return 1;
              if (!y ("a*", "abc", 0))
                return 1;
              if (!y ("[/b", "[/b", 0)) /*"]]"*/ /* glibc Bugzilla bug 12378 */
                return 1;
              if (!n ("d*/*1", "d/s/1", FNM_PATHNAME))
                return 2;
              if (!y ("a\\\\bc", "abc", 0))
                return 3;
              if (!n ("a\\\\bc", "abc", FNM_NOESCAPE))
                return 3;
              if (!y ("*x", ".x", 0))
                return 4;
              if (!n ("*x", ".x", FNM_PERIOD))
                return 4;
              if (!y (Apat, "\\\\", 0))
                return 5;
              if (!y (Apat, "A", 0))
                return 5;
              if (!y (apat, "\\\\", 0))
                return 5;
              if (!y (apat, "a", 0))
                return 5;
              if (!(n (Apat, A_1, 0) == ('A' < '\\\\')))
                return 5;
              if (!(n (apat, a_1, 0) == ('a' < '\\\\')))
                return 5;
              if (!(y (Apat, A01, 0) == ('A' < '\\\\')))
                return 5;
              if (!(y (apat, a01, 0) == ('a' < '\\\\')))
                return 5;
              if (!(y (Apat, bs_1, 0) == ('A' < '\\\\')))
                return 5;
              if (!(y (apat, bs_1, 0) == ('a' < '\\\\')))
                return 5;
              if (!(n (Apat, bs01, 0) == ('A' < '\\\\')))
                return 5;
              if (!(n (apat, bs01, 0) == ('a' < '\\\\')))
                return 5;
              $gl_fnmatch_gnu_start
              if (!y ("xxXX", "xXxX", FNM_CASEFOLD))
                result |= 8;
              if (!y ("a++(x|yy)b", "a+xyyyyxb", FNM_EXTMATCH))
                result |= 16;
              if (!n ("d*/*1", "d/s/1", FNM_FILE_NAME))
                result |= 32;
              if (!y ("*", "x", FNM_FILE_NAME | FNM_LEADING_DIR))
                result |= 64;
              if (!y ("x*", "x/y/z", FNM_FILE_NAME | FNM_LEADING_DIR))
                result |= 64;
              if (!y ("*c*", "c/x", FNM_FILE_NAME | FNM_LEADING_DIR))
                result |= 64;
              $gl_fnmatch_gnu_end
              return result;
            ]])],
         [eval "$gl_fnmatch_cache_var=yes"],
         [eval "$gl_fnmatch_cache_var=no"],
         [eval "$gl_fnmatch_cache_var=\"guessing no\""])
      ])
    eval "gl_fnmatch_result=\"\$$gl_fnmatch_cache_var\""
    if test "$gl_fnmatch_result" != yes; then
      REPLACE_FNMATCH=1
    fi
  fi
  if test $HAVE_FNMATCH = 0 || test $REPLACE_FNMATCH = 1; then
    gl_REPLACE_FNMATCH_H
  fi
])

# Request a POSIX compliant fnmatch function with GNU extensions.
AC_DEFUN([gl_FUNC_FNMATCH_GNU],
[
  m4_divert_text([INIT_PREPARE], [gl_fnmatch_required=GNU])

  AC_REQUIRE([gl_FUNC_FNMATCH_POSIX])
])

AC_DEFUN([gl_PREREQ_FNMATCH],
[
  dnl Prerequisites of lib/fnmatch.c.
  AC_REQUIRE([AC_TYPE_MBSTATE_T])
  AC_CHECK_DECLS([isblank], [], [], [[#include <ctype.h>]])
  AC_CHECK_FUNCS_ONCE([btowc isblank iswctype mbsrtowcs mempcpy wmemchr wmemcpy wmempcpy])
  AC_CHECK_HEADERS_ONCE([wctype.h])
])