fmt.c revision 36049 
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
34#ifndef lint
35#if 0
36static char sccsid[] = "@(#)fmt.c	8.4 (Berkeley) 4/15/94";
37#endif
38static const char rcsid[] =
39	"$Id$";
40#endif /* not lint */
41
42#include <sys/param.h>
43#include <sys/syslimits.h>
44#include <sys/time.h>
45#include <sys/resource.h>
46#include <stdio.h>
47#include <stdlib.h>
48#include <string.h>
49#include <vis.h>
50#include "ps.h"
51
52static char *cmdpart __P((char *));
53static char *shquote __P((char **));
54
55/*
56 * XXX
57 * This is a stub until marc does the real one.
58 */
59static char *
60shquote(argv)
61	char **argv;
62{
63	char **p, *dst, *src;
64	static char buf[4*ARG_MAX];		/* XXX */
65
66	if (*argv == 0) {
67		buf[0] = 0;
68		return (buf);
69	}
70	dst = buf;
71	for (p = argv; (src = *p++) != 0; ) {
72		if (*src == 0)
73			continue;
74		strvis(dst, src, VIS_NL | VIS_CSTYLE);
75		while (*dst)
76			dst++;
77		*dst++ = ' ';
78	}
79	/* Chop off trailing space */
80	if (dst != buf)
81		dst--;
82	*dst = '\0';
83	return (buf);
84}
85
86static char *
87cmdpart(arg0)
88	char *arg0;
89{
90	char *cp;
91
92	return ((cp = strrchr(arg0, '/')) != NULL ? cp + 1 : arg0);
93}
94
95char *
96fmt_argv(argv, cmd, maxlen)
97	char **argv;
98	char *cmd;
99	int maxlen;
100{
101	int len;
102	char *ap, *cp;
103
104	if (argv == 0 || argv[0] == 0) {
105		if (cmd == NULL)
106			return ("");
107		ap = NULL;
108		len = maxlen + 3;
109	} else {
110		ap = shquote(argv);
111		len = strlen(ap) + maxlen + 4;
112	}
113	if ((cp = malloc(len)) == NULL)
114		return (NULL);
115	if (ap == NULL)
116		sprintf(cp, " (%.*s)", maxlen, cmd);
117	else if (strncmp(cmdpart(argv[0]), cmd, maxlen) != 0)
118		sprintf(cp, "%s (%.*s)", ap, maxlen, cmd);
119	else
120		(void) strcpy(cp, ap);
121	return (cp);
122}
123