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
|
/* $Id: getopt.c,v 1.1.1.1 2000/05/10 14:21:34 jholder Exp $
* --------------------------------------------------------------------
* see doc/License.txt for License Information
* --------------------------------------------------------------------
*
* File name: $Id: getopt.c,v 1.1.1.1 2000/05/10 14:21:34 jholder Exp $
*
* Description:
*
* Modification history:
* $Log: getopt.c,v $
* Revision 1.1.1.1 2000/05/10 14:21:34 jholder
*
* imported
*
*
* --------------------------------------------------------------------
*/
#include <stdio.h>
#include <string.h>
#define ERR(s, c) \
if (opterr) {\
char errbuf[2];\
errbuf[0] = (char) c; errbuf[1] = '\n';\
(void) fwrite (argv[0], strlen (argv[0]), 1, stderr);\
(void) fwrite (s, strlen (s), 1, stderr);\
(void) fwrite (errbuf, 2, 1, stderr);\
}
int opterr = 1;
int optind = 1;
int optopt;
const char *optarg;
int getopt( int argc, char *argv[], const char *opts )
{
static int sp = 1;
int c;
char *cp;
if ( sp == 1 )
if ( optind >= argc || argv[optind][0] != '-' || argv[optind][1] == '\0' )
return ( EOF );
else if ( strcmp( argv[optind], "--" ) == 0 )
{
optind++;
return ( EOF );
}
optopt = c = argv[optind][sp];
if ( c == ':' || ( cp = strchr( opts, c ) ) == NULL )
{
ERR( ": illegal option -- ", c );
if ( argv[optind][++sp] == '\0' )
{
optind++;
sp = 1;
}
return ( '?' );
}
if ( *++cp == ':' )
{
if ( argv[optind][sp + 1] != '\0' )
optarg = &argv[optind++][sp + 1];
else if ( ++optind >= argc )
{
ERR( ": option requires an argument -- ", c );
sp = 1;
return ( '?' );
}
else
optarg = argv[optind++];
sp = 1;
}
else
{
if ( argv[optind][++sp] == '\0' )
{
sp = 1;
optind++;
}
optarg = NULL;
}
return ( c );
} /* getopt */
|
