diff options
Diffstat (limited to 'usr/src/lib/libast/common/string/strncopy.c')
| -rw-r--r-- | usr/src/lib/libast/common/string/strncopy.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/usr/src/lib/libast/common/string/strncopy.c b/usr/src/lib/libast/common/string/strncopy.c new file mode 100644 index 0000000000..c25142f391 --- /dev/null +++ b/usr/src/lib/libast/common/string/strncopy.c @@ -0,0 +1,46 @@ +/*********************************************************************** +* * +* This software is part of the ast package * +* Copyright (c) 1985-2007 AT&T Knowledge Ventures * +* and is licensed under the * +* Common Public License, Version 1.0 * +* by AT&T Knowledge Ventures * +* * +* A copy of the License is available at * +* http://www.opensource.org/licenses/cpl1.0.txt * +* (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) * +* * +* Information and Software Systems Research * +* AT&T Research * +* Florham Park NJ * +* * +* Glenn Fowler <gsf@research.att.com> * +* David Korn <dgk@research.att.com> * +* Phong Vo <kpv@research.att.com> * +* * +***********************************************************************/ +#pragma prototyped + +#include <ast.h> + +/* + * copy up to n bytes of string f into t + * trailing 0 always added to t, even if n==0 + * pointer to the copied 0 returned + */ + +char* +strncopy(register char* t, register const char* f, size_t n) +{ + register char* e = t + n - 1; + + do + { + if (t >= e) + { + *t = 0; + return t; + } + } while (*t++ = *f++); + return t - 1; +} |