Commit | Line | Data |
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8690e634 | 1 | # mbsrtowcs.m4 serial 13 |
5df4cba6 | 2 | dnl Copyright (C) 2008-2020 Free Software Foundation, Inc. |
8690e634 JK |
3 | dnl This file is free software; the Free Software Foundation |
4 | dnl gives unlimited permission to copy and/or distribute it, | |
5 | dnl with or without modifications, as long as this notice is preserved. | |
6 | ||
7 | AC_DEFUN([gl_FUNC_MBSRTOWCS], | |
8 | [ | |
9 | AC_REQUIRE([gl_WCHAR_H_DEFAULTS]) | |
10 | ||
11 | AC_REQUIRE([AC_TYPE_MBSTATE_T]) | |
12 | gl_MBSTATE_T_BROKEN | |
13 | ||
14 | AC_CHECK_FUNCS_ONCE([mbsrtowcs]) | |
15 | if test $ac_cv_func_mbsrtowcs = no; then | |
16 | HAVE_MBSRTOWCS=0 | |
17 | AC_CHECK_DECLS([mbsrtowcs],,, [[ | |
18 | /* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before | |
19 | <wchar.h>. | |
20 | BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be | |
21 | included before <wchar.h>. */ | |
22 | #include <stddef.h> | |
23 | #include <stdio.h> | |
24 | #include <time.h> | |
25 | #include <wchar.h> | |
26 | ]]) | |
27 | if test $ac_cv_have_decl_mbsrtowcs = yes; then | |
28 | dnl On Minix 3.1.8, the system's <wchar.h> declares mbsrtowcs() although | |
29 | dnl it does not have the function. Avoid a collision with gnulib's | |
30 | dnl replacement. | |
31 | REPLACE_MBSRTOWCS=1 | |
32 | fi | |
33 | else | |
34 | if test $REPLACE_MBSTATE_T = 1; then | |
35 | REPLACE_MBSRTOWCS=1 | |
36 | else | |
37 | gl_MBSRTOWCS_WORKS | |
38 | case "$gl_cv_func_mbsrtowcs_works" in | |
39 | *yes) ;; | |
40 | *) REPLACE_MBSRTOWCS=1 ;; | |
41 | esac | |
42 | fi | |
43 | fi | |
44 | ]) | |
45 | ||
46 | dnl Test whether mbsrtowcs works. | |
47 | dnl Result is gl_cv_func_mbsrtowcs_works. | |
48 | ||
49 | AC_DEFUN([gl_MBSRTOWCS_WORKS], | |
50 | [ | |
51 | AC_REQUIRE([AC_PROG_CC]) | |
52 | AC_REQUIRE([gt_LOCALE_FR]) | |
53 | AC_REQUIRE([gt_LOCALE_FR_UTF8]) | |
54 | AC_REQUIRE([gt_LOCALE_JA]) | |
55 | AC_REQUIRE([gt_LOCALE_ZH_CN]) | |
56 | AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles | |
57 | AC_CACHE_CHECK([whether mbsrtowcs works], | |
58 | [gl_cv_func_mbsrtowcs_works], | |
59 | [ | |
60 | dnl Initial guess, used when cross-compiling or when no suitable locale | |
61 | dnl is present. | |
62 | changequote(,)dnl | |
63 | case "$host_os" in | |
64 | # Guess no on HP-UX, Solaris, mingw. | |
65 | hpux* | solaris* | mingw*) gl_cv_func_mbsrtowcs_works="guessing no" ;; | |
66 | # Guess yes otherwise. | |
67 | *) gl_cv_func_mbsrtowcs_works="guessing yes" ;; | |
68 | esac | |
69 | changequote([,])dnl | |
70 | if test $LOCALE_FR != none || test $LOCALE_FR_UTF8 != none || test $LOCALE_JA != none || test $LOCALE_ZH_CN != none; then | |
71 | AC_RUN_IFELSE( | |
72 | [AC_LANG_SOURCE([[ | |
73 | #include <locale.h> | |
74 | #include <string.h> | |
75 | /* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before | |
76 | <wchar.h>. | |
77 | BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be | |
78 | included before <wchar.h>. */ | |
79 | #include <stddef.h> | |
80 | #include <stdio.h> | |
81 | #include <time.h> | |
82 | #include <wchar.h> | |
83 | int main () | |
84 | { | |
85 | int result = 0; | |
86 | /* Test whether the function supports a NULL destination argument. | |
87 | This fails on native Windows. */ | |
88 | if (setlocale (LC_ALL, "$LOCALE_FR") != NULL) | |
89 | { | |
90 | const char input[] = "\337er"; | |
91 | const char *src = input; | |
92 | mbstate_t state; | |
93 | ||
94 | memset (&state, '\0', sizeof (mbstate_t)); | |
95 | if (mbsrtowcs (NULL, &src, 1, &state) != 3 | |
96 | || src != input) | |
97 | result |= 1; | |
98 | } | |
99 | /* Test whether the function works when started with a conversion state | |
100 | in non-initial state. This fails on HP-UX 11.11 and Solaris 10. */ | |
101 | if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL) | |
102 | { | |
103 | const char input[] = "B\303\274\303\237er"; | |
104 | mbstate_t state; | |
105 | ||
106 | memset (&state, '\0', sizeof (mbstate_t)); | |
107 | if (mbrtowc (NULL, input + 1, 1, &state) == (size_t)(-2)) | |
108 | if (!mbsinit (&state)) | |
109 | { | |
110 | const char *src = input + 2; | |
111 | if (mbsrtowcs (NULL, &src, 10, &state) != 4) | |
112 | result |= 2; | |
113 | } | |
114 | } | |
115 | if (setlocale (LC_ALL, "$LOCALE_JA") != NULL) | |
116 | { | |
117 | const char input[] = "<\306\374\313\334\270\354>"; | |
118 | mbstate_t state; | |
119 | ||
120 | memset (&state, '\0', sizeof (mbstate_t)); | |
121 | if (mbrtowc (NULL, input + 3, 1, &state) == (size_t)(-2)) | |
122 | if (!mbsinit (&state)) | |
123 | { | |
124 | const char *src = input + 4; | |
125 | if (mbsrtowcs (NULL, &src, 10, &state) != 3) | |
126 | result |= 4; | |
127 | } | |
128 | } | |
129 | if (setlocale (LC_ALL, "$LOCALE_ZH_CN") != NULL) | |
130 | { | |
131 | const char input[] = "B\250\271\201\060\211\070er"; | |
132 | mbstate_t state; | |
133 | ||
134 | memset (&state, '\0', sizeof (mbstate_t)); | |
135 | if (mbrtowc (NULL, input + 1, 1, &state) == (size_t)(-2)) | |
136 | if (!mbsinit (&state)) | |
137 | { | |
138 | const char *src = input + 2; | |
139 | if (mbsrtowcs (NULL, &src, 10, &state) != 4) | |
140 | result |= 8; | |
141 | } | |
142 | } | |
143 | return result; | |
144 | }]])], | |
145 | [gl_cv_func_mbsrtowcs_works=yes], | |
146 | [gl_cv_func_mbsrtowcs_works=no], | |
147 | [:]) | |
148 | fi | |
149 | ]) | |
150 | ]) | |
151 | ||
152 | # Prerequisites of lib/mbsrtowcs.c. | |
153 | AC_DEFUN([gl_PREREQ_MBSRTOWCS], [ | |
154 | : | |
155 | ]) |