diff options
Diffstat (limited to 'gl/m4/iswdigit.m4')
| -rw-r--r-- | gl/m4/iswdigit.m4 | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/gl/m4/iswdigit.m4 b/gl/m4/iswdigit.m4 new file mode 100644 index 0000000..d13c1ae --- /dev/null +++ b/gl/m4/iswdigit.m4 @@ -0,0 +1,120 @@ +# iswdigit.m4 serial 6 +dnl Copyright (C) 2020-2024 Free Software Foundation, Inc. +dnl This file is free software; the Free Software Foundation +dnl gives unlimited permission to copy and/or distribute it, +dnl with or without modifications, as long as this notice is preserved. + +AC_DEFUN([gl_FUNC_ISWDIGIT], +[ + AC_REQUIRE([gl_WCTYPE_H_DEFAULTS]) + AC_REQUIRE([gl_WCTYPE_H]) + AC_REQUIRE([gt_LOCALE_FR]) + AC_REQUIRE([gt_LOCALE_JA]) + AC_REQUIRE([gt_LOCALE_FR_UTF8]) + AC_REQUIRE([gt_LOCALE_ZH_CN]) + AC_REQUIRE([AC_CANONICAL_HOST]) + + if test $HAVE_ISWCNTRL = 0 || test $REPLACE_ISWCNTRL = 1; then + dnl <wctype.h> redefines iswdigit already. + REPLACE_ISWDIGIT="$REPLACE_ISWCNTRL" + else + AC_CACHE_CHECK([whether iswdigit is ISO C compliant], + [gl_cv_func_iswdigit_works], + [ + dnl Initial guess, used when cross-compiling or when no suitable locale + dnl is present. +changequote(,)dnl + case "$host_os" in + # Guess no on FreeBSD, NetBSD, Solaris, native Windows. + freebsd* | dragonfly* | netbsd* | solaris* | mingw* | windows*) + gl_cv_func_iswdigit_works="guessing no" ;; + # Guess yes otherwise. + *) gl_cv_func_iswdigit_works="guessing yes" ;; + esac +changequote([,])dnl + if test $LOCALE_FR != none || test $LOCALE_JA != none || test $LOCALE_FR_UTF8 != none || test $LOCALE_ZH_CN != none; then + AC_RUN_IFELSE( + [AC_LANG_SOURCE([[ +#include <locale.h> +#include <stdlib.h> +#include <string.h> +#include <wchar.h> +#include <wctype.h> + +/* Returns the value of iswdigit for the multibyte character s[0..n-1]. */ +static int +for_character (const char *s, size_t n) +{ + mbstate_t state; + wchar_t wc; + size_t ret; + + memset (&state, '\0', sizeof (mbstate_t)); + wc = (wchar_t) 0xBADFACE; + ret = mbrtowc (&wc, s, n, &state); + if (ret != n) + abort (); + + return iswdigit (wc); +} + +int +main (int argc, char *argv[]) +{ + int is; + int result = 0; + + if (strcmp ("$LOCALE_FR", "none") != 0 + && setlocale (LC_ALL, "$LOCALE_FR") != NULL) + { + /* This fails on mingw, MSVC 14. */ + /* U+00B2 SUPERSCRIPT TWO */ + is = for_character ("\262", 1); + if (!(is == 0)) + result |= 1; + } + if (strcmp ("$LOCALE_JA", "none") != 0 + && setlocale (LC_ALL, "$LOCALE_JA") != NULL) + { + /* This fails on NetBSD 8.0. */ + /* U+FF11 FULLWIDTH DIGIT ONE */ + is = for_character ("\243\261", 2); + if (!(is == 0)) + result |= 2; + } + if (strcmp ("$LOCALE_FR_UTF8", "none") != 0 + && setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL) + { + /* This fails on FreeBSD 13.0, NetBSD 8.0, MSVC 14. */ + /* U+0663 ARABIC-INDIC DIGIT THREE */ + is = for_character ("\331\243", 2); + if (!(is == 0)) + result |= 4; + /* This fails on FreeBSD 13.0, NetBSD 8.0, MSVC 14. */ + /* U+FF11 FULLWIDTH DIGIT ONE */ + is = for_character ("\357\274\221", 3); + if (!(is == 0)) + result |= 8; + } + if (strcmp ("$LOCALE_ZH_CN", "none") != 0 + && setlocale (LC_ALL, "$LOCALE_ZH_CN") != NULL) + { + /* This fails on NetBSD 8.0, Solaris 10, Solaris 11.4. */ + /* U+FF11 FULLWIDTH DIGIT ONE */ + is = for_character ("\243\261", 2); + if (!(is == 0)) + result |= 16; + } + return result; +}]])], + [gl_cv_func_iswdigit_works=yes], + [gl_cv_func_iswdigit_works=no], + [:]) + fi + ]) + case "$gl_cv_func_iswdigit_works" in + *yes) ;; + *) REPLACE_ISWDIGIT=1 ;; + esac + fi +]) |