1/*-
2 * Copyright (c) 1992, 1993, 1994
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the University nor the names of its contributors
14 *    may be used to endorse or promote products derived from this software
15 *    without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30#include <sys/cdefs.h>
31
32#if 0
33#ifndef lint
34static char sccsid[] = "@(#)fmt.c	8.4 (Berkeley) 4/15/94";
35#endif
36#endif
37
38#include <sys/types.h>
39#include <sys/time.h>
40#include <sys/resource.h>
41
42#include <err.h>
43#include <stdio.h>
44#include <stdlib.h>
45#include <string.h>
46#include <unistd.h>
47#include <vis.h>
48
49//#include "ps.h"
50
51static char *cmdpart(char *);
52static char *shquote(char **);
53
54/*
55 * XXX
56 * This is a stub until marc does the real one.
57 */
58static char *
59shquote(char **argv)
60{
61	static long arg_max = -1;
62	size_t len;
63	char **p, *dst, *src;
64	static char *buf = NULL;
65
66	if (buf == NULL) {
67		if ((arg_max = sysconf(_SC_ARG_MAX)) == -1)
68			errx(1, "sysconf _SC_ARG_MAX failed");
69		if ((buf = malloc((u_int)(4 * arg_max)  +  1)) == NULL)
70			errx(1, "malloc failed");
71	}
72
73	if (*argv == 0) {
74		buf[0] = 0;
75		return (buf);
76	}
77	dst = buf;
78	for (p = argv; (src = *p++) != 0; ) {
79		if (*src == 0)
80			continue;
81		len = (size_t)(4 * arg_max - (dst - buf)) / 4;
82		strvisx(dst, src, strlen(src) < len ? strlen(src) : len,
83		    VIS_NL | VIS_CSTYLE);
84		while (*dst)
85			dst++;
86		if ((4 * arg_max - (dst - buf)) / 4 > 0)
87			*dst++ = ' ';
88	}
89	/* Chop off trailing space */
90	if (dst != buf && dst[-1] == ' ')
91		dst--;
92	*dst = '\0';
93	return (buf);
94}
95
96static char *
97cmdpart(char *arg0)
98{
99	char *cp;
100
101	return ((cp = strrchr(arg0, '/')) != NULL ? cp + 1 : arg0);
102}
103
104const char *
105fmt_argv(char **argv, char *cmd, size_t maxlen)
106{
107	size_t len;
108	char *ap, *cp;
109
110	if (argv == NULL || argv[0] == NULL) {
111		if (cmd == NULL)
112			return ("");
113		ap = NULL;
114		len = maxlen + 3;
115	} else {
116		ap = shquote(argv);
117		len = strlen(ap) + maxlen + 4;
118	}
119	cp = malloc(len);
120	if (cp == NULL)
121		return (NULL);
122	if (ap == NULL)
123		sprintf(cp, " (%.*s)", (int)maxlen, cmd);
124	else if (strncmp(cmdpart(argv[0]), cmd, maxlen) != 0)
125		sprintf(cp, "%s (%.*s)", ap, (int)maxlen, cmd);
126	else
127		(void) strcpy(cp, ap);
128	return (cp);
129}
130