fmt.c revision 1556 
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
35static char sccsid[] = "@(#)fmt.c	8.4 (Berkeley) 4/15/94";
36#endif /* not lint */
37
38#include <sys/param.h>
39#include <sys/time.h>
40#include <sys/resource.h>
41#include <ctype.h>
42#include <stdio.h>
43#include <stdlib.h>
44#include <string.h>
45#include <vis.h>
46#include "ps.h"
47
48static char *cmdpart __P((char *));
49static char *shquote __P((char **));
50
51/*
52 * XXX
53 * This is a stub until marc does the real one.
54 */
55static char *
56shquote(argv)
57	char **argv;
58{
59	char **p, *dst, *src;
60	static char buf[4096];		/* XXX */
61
62	if (*argv == 0) {
63		buf[0] = 0;
64		return (buf);
65	}
66	dst = buf;
67	for (p = argv; (src = *p++) != 0; ) {
68		if (*src == 0)
69			continue;
70		strvis(dst, src, VIS_NL | VIS_CSTYLE);
71		while (*dst)
72			dst++;
73		*dst++ = ' ';
74	}
75	*dst = '\0';
76	return (buf);
77}
78
79static char *
80cmdpart(arg0)
81	char *arg0;
82{
83	char *cp;
84
85	return ((cp = strrchr(arg0, '/')) != NULL ? cp + 1 : arg0);
86}
87
88char *
89fmt_argv(argv, cmd, maxlen)
90	char **argv;
91	char *cmd;
92	int maxlen;
93{
94	int len;
95	char *ap, *cp;
96
97	if (argv == 0 || argv[0] == 0) {
98		if (cmd == NULL)
99			return ("");
100		ap = NULL;
101		len = maxlen + 3;
102	} else {
103		ap = shquote(argv);
104		len = strlen(ap) + maxlen + 4;
105	}
106	if ((cp = malloc(len)) == NULL)
107		return (NULL);
108	if (ap == NULL)
109		sprintf(cp, "(%.*s)", maxlen, cmd);
110	else if (strncmp(cmdpart(argv[0]), cmd, maxlen) != 0)
111		sprintf(cp, "%s (%.*s)", ap, maxlen, cmd);
112	else
113		(void) strcpy(cp, ap);
114	return (cp);
115}
116