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simplify and explain

This commit is contained in:
christos 2019-04-27 14:10:01 +00:00
parent 0c663421c2
commit a45df3f4cb
1 changed files with 12 additions and 13 deletions
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25
external/bsd/top/dist/machine/m_netbsd.c vendored
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@ -1,4 +1,4 @@
/* $NetBSD: m_netbsd.c,v 1.22 2019/04/26 19:39:19 christos Exp $ */
/* $NetBSD: m_netbsd.c,v 1.23 2019/04/27 14:10:01 christos Exp $ */
/*
* top - a top users display for Unix
@ -37,12 +37,12 @@
* Andrew Doran <ad@NetBSD.org>
*
*
* $Id: m_netbsd.c,v 1.22 2019/04/26 19:39:19 christos Exp $
* $Id: m_netbsd.c,v 1.23 2019/04/27 14:10:01 christos Exp $
*/
#include <sys/cdefs.h>
#ifndef lint
__RCSID("$NetBSD: m_netbsd.c,v 1.22 2019/04/26 19:39:19 christos Exp $");
__RCSID("$NetBSD: m_netbsd.c,v 1.23 2019/04/27 14:10:01 christos Exp $");
#endif
#include <sys/param.h>
@ -882,19 +882,18 @@ static char *
countable(char *p, size_t l)
{
static const char digits[] = "0123456789";
size_t first = strcspn(p, digits);
size_t last = strspn(p + first, digits);
size_t len = first + last;
if (p[len] || last == 0)
size_t first = strcspn(p, digits); // non digits
size_t last = strspn(p + first, digits); // trailing digits
size_t len = first + last;
if (p[len] || last == 0) // should be total and must have digits
return p;
if (len < l)
if (len < l) // if shorter, done
return p;
if (l < last + 1)
if (l < last + 1) // if not enough for digits, done
return p;
size_t start = l - last - 1;
p[start] = '*';
memmove(p + start + 1, p + first, len - first);
p[l] = '\0';
size_t start = l - last - 1; // compute starting point
p[start] = '*'; // put a star
memmove(p + start + 1, p + first, last + 1); // move digits and NUL
return p;
}