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/*-
* Copyright (c) 1992, 1993, 1994
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#if 0
#ifndef lint
static char sccsid[] = "@(#)fmt.c 8.4 (Berkeley) 4/15/94";
#endif
#endif
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/types.h>
#include <sys/time.h>
#include <sys/resource.h>
#include <err.h>
#include <limits.h>
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <vis.h>
#include "ps.h"
static char *cmdpart(char *);
static char *shquote(char **);
static char *
shquote(char **argv)
{
long arg_max;
static size_t buf_size;
size_t len;
char **p, *dst, *src;
static char *buf = NULL;
if (buf == NULL) {
if ((arg_max = sysconf(_SC_ARG_MAX)) == -1)
errx(1, "sysconf _SC_ARG_MAX failed");
if (arg_max >= LONG_MAX / 4 || arg_max >= (long)(SIZE_MAX / 4))
errx(1, "sysconf _SC_ARG_MAX preposterously large");
buf_size = 4 * arg_max + 1;
if ((buf = malloc(buf_size)) == NULL)
errx(1, "malloc failed");
}
if (*argv == NULL) {
buf[0] = '\0';
return (buf);
}
dst = buf;
for (p = argv; (src = *p++) != NULL; ) {
if (*src == '\0')
continue;
len = (buf_size - 1 - (dst - buf)) / 4;
strvisx(dst, src, strlen(src) < len ? strlen(src) : len,
VIS_NL | VIS_CSTYLE);
while (*dst != '\0')
dst++;
if ((buf_size - 1 - (dst - buf)) / 4 > 0)
*dst++ = ' ';
}
/* Chop off trailing space */
if (dst != buf && dst[-1] == ' ')
dst--;
*dst = '\0';
return (buf);
}
static char *
cmdpart(char *arg0)
{
char *cp;
return ((cp = strrchr(arg0, '/')) != NULL ? cp + 1 : arg0);
}
const char *
fmt_argv(char **argv, char *cmd, size_t maxlen)
{
size_t len;
char *ap, *cp;
if (argv == NULL || argv[0] == NULL) {
if (cmd == NULL)
return ("");
ap = NULL;
len = maxlen + 3;
} else {
ap = shquote(argv);
len = strlen(ap) + maxlen + 4;
}
cp = malloc(len);
if (cp == NULL)
errx(1, "malloc failed");
if (ap == NULL)
sprintf(cp, " (%.*s)", (int)maxlen, cmd);
else if (strncmp(cmdpart(argv[0]), cmd, maxlen) != 0)
sprintf(cp, "%s (%.*s)", ap, (int)maxlen, cmd);
else
(void) strcpy(cp, ap);
return (cp);
}
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