1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
|
/*-
* Copyright (c) 1992, 1993, 1994
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#if 0
#ifndef lint
static char sccsid[] = "@(#)fmt.c 8.4 (Berkeley) 4/15/94";
#endif
#endif
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/types.h>
#include <sys/time.h>
#include <sys/resource.h>
#include <err.h>
#include <limits.h>
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <vis.h>
#include "ps.h"
static char *cmdpart(char *);
static char *shquote(char **);
static char *
shquote(char **argv)
{
long arg_max;
static size_t buf_size;
size_t len;
char **p, *dst, *src;
static char *buf = NULL;
if (buf == NULL) {
if ((arg_max = sysconf(_SC_ARG_MAX)) == -1)
errx(1, "sysconf _SC_ARG_MAX failed");
if (arg_max >= LONG_MAX / 4 || arg_max >= (long)(SIZE_MAX / 4))
errx(1, "sysconf _SC_ARG_MAX preposterously large");
buf_size = 4 * arg_max + 1;
if ((buf = malloc(buf_size)) == NULL)
errx(1, "malloc failed");
}
if (*argv == NULL) {
buf[0] = '\0';
return (buf);
}
dst = buf;
for (p = argv; (src = *p++) != NULL; ) {
if (*src == '\0')
continue;
len = (buf_size - 1 - (dst - buf)) / 4;
strvisx(dst, src, strlen(src) < len ? strlen(src) : len,
VIS_NL | VIS_CSTYLE);
while (*dst != '\0')
dst++;
if ((buf_size - 1 - (dst - buf)) / 4 > 0)
*dst++ = ' ';
}
/* Chop off trailing space */
if (dst != buf && dst[-1] == ' ')
dst--;
*dst = '\0';
return (buf);
}
static char *
cmdpart(char *arg0)
{
char *cp;
return ((cp = strrchr(arg0, '/')) != NULL ? cp + 1 : arg0);
}
const char *
fmt_argv(char **argv, char *cmd, size_t maxlen)
{
size_t len;
char *ap, *cp;
if (argv == NULL || argv[0] == NULL) {
if (cmd == NULL)
return ("");
ap = NULL;
len = maxlen + 3;
} else {
ap = shquote(argv);
len = strlen(ap) + maxlen + 4;
}
cp = malloc(len);
if (cp == NULL)
errx(1, "malloc failed");
if (ap == NULL)
sprintf(cp, "[%.*s]", (int)maxlen, cmd);
else if (strncmp(cmdpart(argv[0]), cmd, maxlen) != 0)
sprintf(cp, "%s (%.*s)", ap, (int)maxlen, cmd);
else
strcpy(cp, ap);
return (cp);
}
|
