2 * Copyright (c) 1992, 1993, 1994
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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 * 4. 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.
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
32 static char sccsid[] = "@(#)fmt.c 8.4 (Berkeley) 4/15/94";
36 #include <sys/cdefs.h>
37 __FBSDID("$FreeBSD$");
39 #include <sys/types.h>
41 #include <sys/resource.h>
54 static char *cmdpart(char *);
55 static char *shquote(char **);
61 static size_t buf_size;
64 static char *buf = NULL;
67 if ((arg_max = sysconf(_SC_ARG_MAX)) == -1)
68 errx(1, "sysconf _SC_ARG_MAX failed");
69 if (arg_max >= LONG_MAX / 4 || arg_max >= (long)(SIZE_MAX / 4))
70 errx(1, "sysconf _SC_ARG_MAX preposterously large");
71 buf_size = 4 * arg_max + 1;
72 if ((buf = malloc(buf_size)) == NULL)
73 errx(1, "malloc failed");
81 for (p = argv; (src = *p++) != NULL; ) {
84 len = (buf_size - 1 - (dst - buf)) / 4;
85 strvisx(dst, src, strlen(src) < len ? strlen(src) : len,
89 if ((buf_size - 1 - (dst - buf)) / 4 > 0)
92 /* Chop off trailing space */
93 if (dst != buf && dst[-1] == ' ')
104 return ((cp = strrchr(arg0, '/')) != NULL ? cp + 1 : arg0);
108 fmt_argv(char **argv, char *cmd, size_t maxlen)
113 if (argv == NULL || argv[0] == NULL) {
120 len = strlen(ap) + maxlen + 4;
124 errx(1, "malloc failed");
126 sprintf(cp, "[%.*s]", (int)maxlen, cmd);
127 else if (strncmp(cmdpart(argv[0]), cmd, maxlen) != 0)
128 sprintf(cp, "%s (%.*s)", ap, (int)maxlen, cmd);