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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
30 #include <sys/cdefs.h>
31
32 #if 0
33 #ifndef lint
34 static char sccsid[] = "@(#)fmt.c 8.4 (Berkeley) 4/15/94";
35 #endif
36 #endif
37
38 #include <sys/types.h>
39 #include <sys/time.h>
40 #include <sys/resource.h>
41
42 #include <err.h>
43 #include <stdio.h>
44 #include <stdlib.h>
45 #include <string.h>
46 #include <unistd.h>
47 #include <vis.h>
48
49 //#include "ps.h"
50
51 static char *cmdpart(char *);
52 static char *shquote(char **);
53
54 /*
55 * XXX
56 * This is a stub until marc does the real one.
57 */
58 static char *
59 shquote(char **argv)
60 {
61 static long arg_max = -1;
62 size_t len;
63 char **p, *dst, *src;
64 static char *buf = NULL;
65
66 if (buf == NULL) {
67 if ((arg_max = sysconf(_SC_ARG_MAX)) == -1)
68 errx(1, "sysconf _SC_ARG_MAX failed");
69 if ((buf = malloc((u_int)(4 * arg_max) + 1)) == NULL)
70 errx(1, "malloc failed");
71 }
72
73 if (*argv == 0) {
74 buf[0] = 0;
75 return (buf);
76 }
77 dst = buf;
78 for (p = argv; (src = *p++) != 0; ) {
79 if (*src == 0)
80 continue;
81 len = (size_t)(4 * arg_max - (dst - buf)) / 4;
82 strvisx(dst, src, strlen(src) < len ? strlen(src) : len,
83 VIS_NL | VIS_CSTYLE);
84 while (*dst)
85 dst++;
86 if ((4 * arg_max - (dst - buf)) / 4 > 0)
87 *dst++ = ' ';
88 }
89 /* Chop off trailing space */
90 if (dst != buf && dst[-1] == ' ')
91 dst--;
92 *dst = '\0';
93 return (buf);
94 }
95
96 static char *
97 cmdpart(char *arg0)
98 {
99 char *cp;
100
101 return ((cp = strrchr(arg0, '/')) != NULL ? cp + 1 : arg0);
102 }
103
104 const char *
105 fmt_argv(char **argv, char *cmd, size_t maxlen)
106 {
107 size_t len;
108 char *ap, *cp;
109
110 if (argv == NULL || argv[0] == NULL) {
111 if (cmd == NULL)
112 return ("");
113 ap = NULL;
114 len = maxlen + 3;
115 } else {
116 ap = shquote(argv);
117 len = strlen(ap) + maxlen + 4;
118 }
119 cp = malloc(len);
120 if (cp == NULL)
121 return (NULL);
122 if (ap == NULL)
123 sprintf(cp, " (%.*s)", (int)maxlen, cmd);
124 else if (strncmp(cmdpart(argv[0]), cmd, maxlen) != 0)
125 sprintf(cp, "%s (%.*s)", ap, (int)maxlen, cmd);
126 else
127 (void) strcpy(cp, ap);
128 return (cp);
129 }