diff options
Diffstat (limited to 'gnu/usr.bin/grep/grep.c')
| -rw-r--r-- | gnu/usr.bin/grep/grep.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/gnu/usr.bin/grep/grep.c b/gnu/usr.bin/grep/grep.c index c831537..ad1dd49 100644 --- a/gnu/usr.bin/grep/grep.c +++ b/gnu/usr.bin/grep/grep.c @@ -33,6 +33,12 @@ # include <sys/time.h> # include <sys/resource.h> #endif +#if defined HAVE_WCTYPE_H && defined HAVE_WCHAR_H && defined HAVE_MBRTOWC +/* We can handle multibyte string. */ +# define MBS_SUPPORT +# include <wchar.h> +# include <wctype.h> +#endif #include <stdio.h> #include "system.h" #include "getopt.h" @@ -1805,6 +1811,37 @@ warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n")) if (!install_matcher (matcher) && !install_matcher ("default")) abort (); +#ifdef MBS_SUPPORT + if (MB_CUR_MAX != 1 && match_icase) + { + wchar_t wc; + mbstate_t cur_state, prev_state; + int i, len = strlen(keys); + + memset(&cur_state, 0, sizeof(mbstate_t)); + for (i = 0; i <= len ;) + { + size_t mbclen; + mbclen = mbrtowc(&wc, keys + i, len - i, &cur_state); + if (mbclen == (size_t) -1 || mbclen == (size_t) -2 || mbclen == 0) + { + /* An invalid sequence, or a truncated multibyte character. + We treat it as a singlebyte character. */ + mbclen = 1; + } + else + { + if (iswupper((wint_t)wc)) + { + wc = towlower((wint_t)wc); + wcrtomb(keys + i, wc, &cur_state); + } + } + i += mbclen; + } + } +#endif /* MBS_SUPPORT */ + (*compile)(keys, keycc); if ((argc - optind > 1 && !no_filenames) || with_filenames) |
