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author | tjr <tjr@FreeBSD.org> | 2004-07-21 10:54:57 +0000 |
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committer | tjr <tjr@FreeBSD.org> | 2004-07-21 10:54:57 +0000 |
commit | 5b4f25c6e9c9b37dcda00bd4a94aabeffeed31b0 (patch) | |
tree | 1c3c81fbcfab80a357977aa6546dc3166c9d5257 /lib/libc/locale/wcsrtombs.c | |
parent | f892b6158fb86942cd8cee58017eded760b7546d (diff) | |
download | FreeBSD-src-5b4f25c6e9c9b37dcda00bd4a94aabeffeed31b0.zip FreeBSD-src-5b4f25c6e9c9b37dcda00bd4a94aabeffeed31b0.tar.gz |
Implement the GNU extensions of mbsnrtowcs() and wcsnrtombs(). These are
convenient when the source string isn't null-terminated.
Implement the other conversion functions (mbstowcs(), mbsrtowcs(), wcstombs(),
wcsrtombs()) in terms of these new functions.
Diffstat (limited to 'lib/libc/locale/wcsrtombs.c')
-rw-r--r-- | lib/libc/locale/wcsrtombs.c | 68 |
1 files changed, 1 insertions, 67 deletions
diff --git a/lib/libc/locale/wcsrtombs.c b/lib/libc/locale/wcsrtombs.c index a03f0d3..f3b38b7 100644 --- a/lib/libc/locale/wcsrtombs.c +++ b/lib/libc/locale/wcsrtombs.c @@ -41,71 +41,5 @@ wcsrtombs(char * __restrict dst, const wchar_t ** __restrict src, size_t len, if (ps == NULL) ps = &mbs; - return (__wcsrtombs(dst, src, len, ps)); -} - -size_t -__wcsrtombs_std(char * __restrict dst, const wchar_t ** __restrict src, - size_t len, mbstate_t * __restrict ps) -{ - mbstate_t mbsbak; - char buf[MB_LEN_MAX]; - const wchar_t *s; - size_t nbytes; - int nb; - - s = *src; - nbytes = 0; - - if (dst == NULL) { - for (;;) { - if ((nb = (int)__wcrtomb(buf, *s, ps)) < 0) - /* Invalid character - wcrtomb() sets errno. */ - return ((size_t)-1); - else if (*s == L'\0') - return (nbytes + nb - 1); - s++; - nbytes += nb; - } - /*NOTREACHED*/ - } - - while (len > 0) { - if (len > (size_t)MB_CUR_MAX) { - /* Enough space to translate in-place. */ - if ((nb = (int)__wcrtomb(dst, *s, ps)) < 0) { - *src = s; - return ((size_t)-1); - } - } else { - /* - * May not be enough space; use temp. buffer. - * - * We need to save a copy of the conversion state - * here so we can restore it if the multibyte - * character is too long for the buffer. - */ - mbsbak = *ps; - if ((nb = (int)__wcrtomb(buf, *s, ps)) < 0) { - *src = s; - return ((size_t)-1); - } - if (nb > (int)len) { - /* MB sequence for character won't fit. */ - *ps = mbsbak; - break; - } - memcpy(dst, buf, nb); - } - if (*s == L'\0') { - *src = NULL; - return (nbytes + nb - 1); - } - s++; - dst += nb; - len -= nb; - nbytes += nb; - } - *src = s; - return (nbytes); + return (__wcsnrtombs(dst, src, SIZE_T_MAX, len, ps)); } |