From 0b44a0315b47dd8eced9f3b7f31580cf14bbfc01 Mon Sep 17 00:00:00 2001 From: Rich Felker Date: Sat, 12 Feb 2011 00:22:29 -0500 Subject: initial check-in, version 0.5.0 --- src/multibyte/wcrtomb.c | 38 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 src/multibyte/wcrtomb.c (limited to 'src/multibyte/wcrtomb.c') diff --git a/src/multibyte/wcrtomb.c b/src/multibyte/wcrtomb.c new file mode 100644 index 00000000..36180c8f --- /dev/null +++ b/src/multibyte/wcrtomb.c @@ -0,0 +1,38 @@ +/* + * This code was written by Rich Felker in 2010; no copyright is claimed. + * This code is in the public domain. Attribution is appreciated but + * unnecessary. + */ + +#include +#include +#include +#include + +#include "internal.h" + +size_t wcrtomb(char *s, wchar_t wc, mbstate_t *st) +{ + if (!s) return 1; + if ((unsigned)wc < 0x80) { + *s = wc; + return 1; + } else if ((unsigned)wc < 0x800) { + *s++ = 0xc0 | (wc>>6); + *s = 0x80 | (wc&0x3f); + return 2; + } else if ((unsigned)wc < 0xd800 || (unsigned)wc-0xe000 < 0x2000) { + *s++ = 0xe0 | (wc>>12); + *s++ = 0x80 | ((wc>>6)&0x3f); + *s = 0x80 | (wc&0x3f); + return 3; + } else if ((unsigned)wc-0x10000 < 0x100000) { + *s++ = 0xf0 | (wc>>18); + *s++ = 0x80 | ((wc>>12)&0x3f); + *s++ = 0x80 | ((wc>>6)&0x3f); + *s = 0x80 | (wc&0x3f); + return 4; + } + errno = EILSEQ; + return -1; +} -- cgit v1.2.1