xref: /netbsd-src/bin/ps/fmt.c (revision ae9172d6cd9432a6a1a56760d86b32c57a66c39c)
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 static 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 
48 static char *cmdpart __P((char *));
49 static char *shquote __P((char **));
50 
51 /*
52  * XXX
53  * This is a stub until marc does the real one.
54  */
55 static char *
56 shquote(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 
79 static char *
80 cmdpart(arg0)
81 	char *arg0;
82 {
83 	char *cp;
84 
85 	return ((cp = strrchr(arg0, '/')) != NULL ? cp + 1 : arg0);
86 }
87 
88 char *
89 fmt_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