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 * @(#)fmt.c 8.4 (Berkeley) 4/15/94
30 * $FreeBSD: src/bin/ps/fmt.c,v 1.14.2.1 2002/03/16 01:15:11 mikeh Exp $
31 */
32
33 #include <sys/types.h>
34 #include <sys/queue.h>
35 #include <sys/time.h>
36 #include <sys/resource.h>
37 #include <err.h>
38 #include <stdio.h>
39 #include <stdlib.h>
40 #include <string.h>
41 #include <unistd.h>
42 #include <vis.h>
43 #include "ps.h"
44
45 static char *cmdpart (char *);
46 static char *shquote (char **);
47
48 /*
49 * XXX
50 * This is a stub until marc does the real one.
51 */
52 static char *
shquote(char ** argv)53 shquote(char **argv)
54 {
55 static long arg_max = -1;
56 size_t len;
57 char **p, *dst, *src;
58 static char *buf = NULL;
59
60 if (buf == NULL) {
61 if ((arg_max = sysconf(_SC_ARG_MAX)) == -1)
62 errx(1, "sysconf _SC_ARG_MAX failed");
63 if ((buf = malloc((4 * arg_max) + 1)) == NULL)
64 errx(1, "malloc failed");
65 }
66
67 if (*argv == NULL) {
68 buf[0] = 0;
69 return (buf);
70 }
71 dst = buf;
72 for (p = argv; (src = *p++) != NULL; ) {
73 if (*src == 0)
74 continue;
75 len = (4 * arg_max - (dst - buf)) / 4;
76 strvisx(dst, src, strlen(src) < len ? strlen(src) : len,
77 VIS_NL | VIS_CSTYLE);
78 while (*dst)
79 dst++;
80 if ((4 * arg_max - (dst - buf)) / 4 > 0)
81 *dst++ = ' ';
82 }
83 /* Chop off trailing space */
84 if (dst != buf && dst[-1] == ' ')
85 dst--;
86 *dst = '\0';
87 return (buf);
88 }
89
90 static char *
cmdpart(char * arg0)91 cmdpart(char *arg0)
92 {
93 char *cp;
94
95 return ((cp = strrchr(arg0, '/')) != NULL ? cp + 1 : arg0);
96 }
97
98 const char *
fmt_argv(char ** argv,char * cmd,int maxlen)99 fmt_argv(char **argv, char *cmd, int maxlen)
100 {
101 int len;
102 char *ap, *cp;
103
104 if (argv == NULL || argv[0] == NULL) {
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 strcpy(cp, ap);
121 return (cp);
122 }
123