fmt.c revision 6971 
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. All advertising materials mentioning features or use of this software
14 *    must display the following acknowledgement:
15 *	This product includes software developed by the University of
16 *	California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 *	$Id: fmt.c,v 1.4 1994/11/10 23:25:12 ats Exp $
34 */
35
36#ifndef lint
37static char sccsid[] = "@(#)fmt.c	8.4 (Berkeley) 4/15/94";
38#endif /* not lint */
39
40#include <sys/param.h>
41#include <sys/syslimits.h>
42#include <sys/time.h>
43#include <sys/resource.h>
44#include <ctype.h>
45#include <stdio.h>
46#include <stdlib.h>
47#include <string.h>
48#include <vis.h>
49#include "ps.h"
50
51static char *cmdpart __P((char *));
52static char *shquote __P((char **));
53
54/*
55 * XXX
56 * This is a stub until marc does the real one.
57 */
58static char *
59shquote(argv)
60	char **argv;
61{
62	char **p, *dst, *src;
63	static char buf[ARG_MAX];		/* XXX */
64
65	if (*argv == 0) {
66		buf[0] = 0;
67		return (buf);
68	}
69	dst = buf;
70	for (p = argv; (src = *p++) != 0; ) {
71		if (*src == 0)
72			continue;
73		strvis(dst, src, VIS_NL | VIS_CSTYLE);
74		while (*dst)
75			dst++;
76		*dst++ = ' ';
77	}
78	/* Chop off trailing space */
79	if (dst != buf)
80		dst--;
81	*dst = '\0';
82	return (buf);
83}
84
85static char *
86cmdpart(arg0)
87	char *arg0;
88{
89	char *cp;
90
91	return ((cp = strrchr(arg0, '/')) != NULL ? cp + 1 : arg0);
92}
93
94char *
95fmt_argv(argv, cmd, maxlen)
96	char **argv;
97	char *cmd;
98	int maxlen;
99{
100	int len;
101	char *ap, *cp;
102
103	if (argv == 0 || argv[0] == 0) {
104		if (cmd == NULL)
105			return ("");
106		ap = NULL;
107		len = maxlen + 3;
108	} else {
109		ap = shquote(argv);
110		len = strlen(ap) + maxlen + 4;
111	}
112	if ((cp = malloc(len)) == NULL)
113		return (NULL);
114	if (ap == NULL)
115		sprintf(cp, " (%.*s)", maxlen, cmd);
116	else if (strncmp(cmdpart(argv[0]), cmd, maxlen) != 0)
117		sprintf(cp, "%s (%.*s)", ap, maxlen, cmd);
118	else
119		(void) strcpy(cp, ap);
120	return (cp);
121}
122