Sha256: 62204bc605d52d47c0a118ad1ba3280a9908e310dad9905b4c1d06d2e486ba66
Contents?: true
Size: 1.02 KB
Versions: 8
Compression:
Stored size: 1.02 KB
Contents
/*
* 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 <stdlib.h>
#include <inttypes.h>
#include <wchar.h>
#include <errno.h>
#include "internal.h"
size_t wcsrtombs(char *restrict s, const wchar_t **restrict ws, size_t n, mbstate_t *restrict st)
{
const wchar_t *ws2;
char buf[4];
size_t N = n, l;
if (!s) {
for (n=0, ws2=*ws; *ws2; ws2++) {
if (*ws2 >= 0x80u) {
l = wcrtomb(buf, *ws2, 0);
if (!(l+1)) return -1;
n += l;
} else n++;
}
return n;
}
while (n>=4 && **ws) {
if (**ws >= 0x80u) {
l = wcrtomb(s, **ws, 0);
if (!(l+1)) return -1;
s += l;
n -= l;
} else {
*s++ = **ws;
n--;
}
(*ws)++;
}
while (n && **ws) {
if (**ws >= 0x80u) {
l = wcrtomb(buf, **ws, 0);
if (!(l+1)) return -1;
if (l>n) return N-n;
wcrtomb(s, **ws, 0);
s += l;
n -= l;
} else {
*s++ = **ws;
n--;
}
(*ws)++;
}
if (n) *s = 0;
*ws = 0;
return N-n;
}
Version data entries
8 entries across 8 versions & 1 rubygems