[unix-history] / usr / src / bin / ps / fmt.c

/*-
* Copyright (c) 1992, 1993
*      The Regents of the University of California.  All rights reserved.
*
* %sccs.include.redist.c%
*/

#ifndef lint
static char sccsid[] = "@(#)fmt.c       8.1 (Berkeley) %G%";
#endif /* not lint */

#include <sys/param.h>
#include <sys/time.h>
#include <sys/resource.h>
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "ps.h"

static char *cmdpart __P((char *));
static char *shquote __P((char **));

/*
* XXX
* This is a stub until marc does the real one.
*/
static char *
shquote(argv)
       register char **argv;
{
       register char **p, *dst, *src;
       static char buf[1024];          /* XXX */

       if (*argv == 0) {
               buf[0] = 0;
               return (buf);
       }
       dst = buf;
       for (p = argv; (src = *p++) != 0; ) {
               if (*src == 0)
                       continue;
               while ((*dst++ = *src++) != 0)
                       continue;
               dst[-1] = ' ';
       }
       dst[-1] = 0;
       return (buf);
}

static char *
cmdpart(arg0)
       char *arg0;
{
       register char *cp;

       return ((cp = strrchr(arg0, '/')) != NULL ? cp + 1 : arg0);
}

char *
fmt_argv(argv, cmd, maxlen)
       register char **argv;
       register char *cmd;
       int maxlen;
{
       register int len;
       register char *ap, *cp;

       if (argv == 0 || argv[0] == 0) {
               if (cmd == NULL)
                       return ("");
               ap = NULL;
               len = maxlen + 3;
       } else {
               ap = shquote(argv);
               len = strlen(ap) + maxlen + 4;
       }
       if ((cp = malloc(len)) == NULL)
               return (NULL);
       if (ap == NULL)
               sprintf(cp, "(%.*s)", maxlen, cmd);
       else if (strncmp(cmdpart(argv[0]), cmd, maxlen) != 0)
               sprintf(cp, "%s (%.*s)", ap, maxlen, cmd);
       else
               (void) strcpy(cp, ap);
       return (cp);
}