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author | Ingo Schwarze <schwarze@openbsd.org> | 2018-02-27 11:16:23 +0000 |
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committer | Ingo Schwarze <schwarze@openbsd.org> | 2018-02-27 11:16:23 +0000 |
commit | 957f6aafd9fc45fb66da1888378b261ed1209036 (patch) | |
tree | ad633fa7f56954e3ad4e8d1f586be4e0a9a301b3 /compat_strndup.c | |
parent | 5dd8c40e5ee7a6f5e3acca5d38042a17760e0cde (diff) | |
download | mandoc-957f6aafd9fc45fb66da1888378b261ed1209036.tar.gz mandoc-957f6aafd9fc45fb66da1888378b261ed1209036.tar.zst mandoc-957f6aafd9fc45fb66da1888378b261ed1209036.zip |
Add strndup(3) compat implementation.
Jan Stary reports that MacOS X Snow Leopard and older lacks it.
Diffstat (limited to 'compat_strndup.c')
-rw-r--r-- | compat_strndup.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/compat_strndup.c b/compat_strndup.c new file mode 100644 index 00000000..5e127364 --- /dev/null +++ b/compat_strndup.c @@ -0,0 +1,50 @@ +#include "config.h" + +#if HAVE_STRNDUP + +int dummy; + +#else + +/* $Id: compat_strndup.c,v 1.1 2018/02/27 11:16:23 schwarze Exp $ */ +/* OpenBSD: strndup.c,v 1.2 2015/08/31 02:53:57 guenther Exp */ +/* + * Copyright (c) 2010 Todd C. Miller <Todd.Miller@courtesan.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include <sys/types.h> + +#include <stdlib.h> +#include <string.h> + +char * +strndup(const char *str, size_t maxlen) +{ + char *copy; + size_t len; + + for (len = 0; len < maxlen && str[len] != '\0'; len++) + continue; + + copy = malloc(len + 1); + if (copy != NULL) { + (void)memcpy(copy, str, len); + copy[len] = '\0'; + } + + return copy; +} + +#endif |