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/wcsndup.c | 44 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 src/wchar/wcsndup.c (limited to 'src/wchar/wcsndup.c') diff --git a/src/wchar/wcsndup.c b/src/wchar/wcsndup.c new file mode 100644 index 0000000..db81f07 --- /dev/null +++ b/src/wchar/wcsndup.c @@ -0,0 +1,44 @@ +/** + * 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 +#include + + + +/** + * Duplicate a string. + * + * This is a slibc extension added for completeness. + * It is only available if GNU extensions are available. + * + * @param string The string to duplicate. + * @param maxlen Truncate the string to this length, if it is longer. + * A NUL wide character is guaranteed to always be + * written upon successful completion. + * @return The new string. `NULL` is returned on error + * and `errno` is set to indicate the error. + * + * @throws ENOMEM The process could not allocate sufficient amount of memory. + */ +wchar_t* wcsndup(const wchar_t* string, size_t maxlen) +{ + size_t n = wcsnlen(string, maxlen) + 1; + wchar_t* r = malloc(n * sizeof(wchar_t)); + return r == NULL ? NULL : wmemcpy(r, string, n); +} + -- cgit v1.2.3-70-g09d2