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author | Lorry Tar Creator <lorry-tar-importer@baserock.org> | 2013-04-01 14:07:52 +0000 |
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committer | <> | 2013-05-17 14:06:43 +0000 |
commit | 986bc2ac05bc4c08c6a0ed30c9e97674932ccfeb (patch) | |
tree | 8346daf16e98e93415195acbf99f09cb5326b73b /strlcpy.c | |
download | bmake-tarball-8d1ac348edb944f3af2e3b32db4eaa8fdf5b0e3a.tar.gz |
Diffstat (limited to 'strlcpy.c')
-rw-r--r-- | strlcpy.c | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/strlcpy.c b/strlcpy.c new file mode 100644 index 0000000..b59b2f4 --- /dev/null +++ b/strlcpy.c @@ -0,0 +1,63 @@ +/* $NetBSD: strlcpy.c,v 1.3 2007/06/04 18:19:27 christos Exp $ */ +/* $OpenBSD: strlcpy.c,v 1.7 2003/04/12 21:56:39 millert Exp $ */ + +/* + * Copyright (c) 1998 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 TODD C. MILLER DISCLAIMS ALL + * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL TODD C. MILLER 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. + */ + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif +#ifndef HAVE_STRLCPY + +#include <sys/cdefs.h> + +#include <sys/types.h> +#include <string.h> + +/* + * Copy src to string dst of size siz. At most siz-1 characters + * will be copied. Always NUL terminates (unless siz == 0). + * Returns strlen(src); if retval >= siz, truncation occurred. + */ +size_t +strlcpy(char *dst, const char *src, size_t siz) +{ + char *d = dst; + const char *s = src; + size_t n = siz; + + if (!dst || !src) + return 0; + + /* Copy as many bytes as will fit */ + if (n != 0 && --n != 0) { + do { + if ((*d++ = *s++) == 0) + break; + } while (--n != 0); + } + + /* Not enough room in dst, add NUL and traverse rest of src */ + if (n == 0) { + if (siz != 0) + *d = '\0'; /* NUL-terminate dst */ + while (*s++) + ; + } + + return(s - src - 1); /* count does not include NUL */ +} +#endif |