46 lines
2.5 KiB
C
46 lines
2.5 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2020 Justine Alexandra Roberts Tunney │
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│ │
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│ This program is free software; you can redistribute it and/or modify │
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│ it under the terms of the GNU General Public License as published by │
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│ the Free Software Foundation; version 2 of the License. │
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│ │
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│ This program is distributed in the hope that it will be useful, but │
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│ WITHOUT ANY WARRANTY; without even the implied warranty of │
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│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU │
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│ General Public License for more details. │
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│ │
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│ You should have received a copy of the GNU General Public License │
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│ along with this program; if not, write to the Free Software │
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│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
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│ 02110-1301 USA │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/errno.h"
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#include "libc/stdio/stdio.h"
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/**
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* Writes wide character string to stream.
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*
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* Writing stops at the NUL-terminator, which isn't included in output.
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* This function blocks until the full string is written, unless an
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* unrecoverable error happens.
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*
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* @param s is a NUL-terminated string that's non-NULL
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* @param f is an open stream
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* @return strlen(s) or -1 w/ errno on error
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*/
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int fputws(const wchar_t *s, FILE *f) {
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int res = 0;
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while (*s) {
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if (fputwc(*s++, f) == -1) {
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if (ferror(f) == EINTR) continue;
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if (feof(f)) errno = f->state = EPIPE;
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return -1;
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}
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++res;
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}
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return ++res;
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}
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