From 0a9ed0f9b84247b0dda23500b7ab301a1238736b Mon Sep 17 00:00:00 2001 From: Mattias Andrée Date: Tue, 17 Nov 2015 06:57:59 +0100 Subject: m + split wchar/*.c MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Mattias Andrée --- src/wchar/wcsnmove.c | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100644 src/wchar/wcsnmove.c (limited to 'src/wchar/wcsnmove.c') diff --git a/src/wchar/wcsnmove.c b/src/wchar/wcsnmove.c new file mode 100644 index 0000000..1abe3f0 --- /dev/null +++ b/src/wchar/wcsnmove.c @@ -0,0 +1,43 @@ +/** + * slibc — Yet another C library + * Copyright © 2015 Mattias Andrée (maandree@member.fsf.org) + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ +#include + + + +/** + * Copy a memory segment to another, possibly overlapping, segment, + * stop when a NUL wide character is encountered. + * + * @param whither The destination memory segment. + * @param whence The source memory segment. + * @param maxlen The maximum number of wide characters to copy. + * NOTE that if the resulting string at least this + * long, no NUL character will be written to `whither'. + * On the otherhand, if the resultnig string is + * shorter, `whither` will be filled with NUL characters + * until this amount of characters have been written. + * @return `whither` is returned. + */ +wchar_t* wcsnmove(wchar_t* whither, const wchar_t* whence, size_t maxlen) +{ + size_t n = wcsnlen(whence, maxlen); + wmemmove(whither, whence, n); + wmemset(whither, 0, maxlen - n); + return whither; +} + -- cgit v1.2.3-70-g09d2