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Sprite 1984 - 1993
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strncpy.c,v
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1992-03-27
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head 1.3;
branch ;
access ;
symbols sprited:1.2.1;
locks ; strict;
comment @ * @;
1.3
date 92.03.27.13.30.06; author rab; state Exp;
branches ;
next 1.2;
1.2
date 89.03.22.16.07.14; author rab; state Exp;
branches 1.2.1.1;
next 1.1;
1.1
date 88.04.25.13.25.50; author ouster; state Exp;
branches ;
next ;
1.2.1.1
date 91.11.23.23.10.02; author kupfer; state Exp;
branches ;
next ;
desc
@@
1.3
log
@A few little optimizations.
@
text
@/*
* strncpy.c --
*
* Source code for the "strncpy" library routine.
*
* Copyright 1988 Regents of the University of California
* Permission to use, copy, modify, and distribute this
* software and its documentation for any purpose and without
* fee is hereby granted, provided that the above copyright
* notice appear in all copies. The University of California
* makes no representations about the suitability of this
* software for any purpose. It is provided "as is" without
* express or implied warranty.
*/
#ifndef lint
static char rcsid[] = "$Header: /sprite/src/lib/c/string/RCS/strncpy.c,v 1.2 89/03/22 16:07:14 rab Exp Locker: rab $ SPRITE (Berkeley)";
#endif /* not lint */
#include <string.h>
/*
*----------------------------------------------------------------------
*
* strncpy --
*
* Copy exactly numChars characters from src to dst. If src doesn't
* contain exactly numChars characters, then the last characters are
* ignored (if src is too long) or filled with zeros (if src
* is too short). If src is too long then dst will not be
* null-terminated.
*
* Results:
* The return value is a pointer to the destination string, dst.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
char *
strncpy(dst, src, numChars)
register char *src; /* Place from which to copy. */
char *dst; /* Place to store copy. */
int numChars; /* Maximum number of characters to copy. */
{
register char *copy = dst;
#ifndef lint
while (--numChars >= 0) {
if ((*copy++ = *src++) == '\0') {
while (--numChars >= 0) {
*copy++ = '\0';
}
return dst;
}
}
#else
for (; numChars > 0; --numChars) {
*copy = *src;
if (*copy == '\0') {
for (; numChars > 0; --numChars) {
*++copy = '\0';
}
return dst;
}
++copy;
++src;
}
#endif
return dst;
}
@
1.2
log
@Added zero fill after end of string.
@
text
@d17 1
a17 1
static char rcsid[] = "$Header: /sprite/src/lib/c/string/RCS/strncpy.c,v 1.1 88/04/25 13:25:50 ouster Exp Locker: rab $ SPRITE (Berkeley)";
d50 1
d59 13
@
1.2.1.1
log
@Initial branch for Sprite server.
@
text
@d17 1
a17 1
static char rcsid[] = "$Header: /sprite/src/lib/c/string/RCS/strncpy.c,v 1.2 89/03/22 16:07:14 rab Exp Locker: rab $ SPRITE (Berkeley)";
@
1.1
log
@Initial revision
@
text
@d17 2
a18 2
static char rcsid[] = "$Header: proto.c,v 1.2 88/03/11 08:39:08 ouster Exp $ SPRITE (Berkeley)";
#endif not lint
d20 2
d50 7
a56 2
if (numChars == 0) {
return dst;
a57 5
do {
if ((*copy++ = *src) != 0) {
src += 1;
}
} while (--numChars > 0);
@