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
|
/* testcc.cc */
#include <iostream>
#include <stdio.h>
#include <opt.h>
using namespace std;
int month=4;
int day=24;
int year=1993;
int julian=0;
char *who=NULL;
int version=99;
int go(int argc, char **argv)
{
if (argc>1) {
cout <<
"In program: " << argv[0] <<
"Extra option: " << argv[1] << endl;
}
if (optinvoked(&month)) {
cout << "User set month..." << endl;
}
if (month == 9 && day == 11 && year == 1989) {
printf("Happy birthday, Max\n");
} else {
printf("Hello, %s: %4d/%02d/%02d %s\n",(who==NULL ? "world" : who),
year,month,day,(julian ? "(Julian)" : ""));
}
return OPT_OK;
}
int checkyear(void *v)
{
if (year == 2000) {
printf("Watch out for that year=2000 bug!\n");
return OPT_ERROR;
}
return OPT_OK;
}
int quit()
{
printf("Bye...\n");
return OPT_OK;
}
int write_version(void *v)
{
/* it's a little hokey that this requires an argument... */
v = &version;
printf("Version %d\n",version);
optExitNumber(12);
return OPT_EXIT;
}
int fix_mon(void *v)
{
int m;
/* fix whatever int variable v is pointing to */
m = *((int *)v);
if (m < 1 || m > 12)
m=1;
*((int *)v) = m;
return OPT_OK;
}
int
main(int argc, char **argv)
{
OptRegister(&month,'m',"month");
opthook(&month,fix_mon);
OptRegister(&day,'d',"day","Day");
opthelp(&day,"Use day of month, should be less than 32");
OptRegister(&year,"year");
optdescript(&year,"What Year");
opthook(&year,checkyear);
OptRegister(&julian,OPT_BOOL,"julian");
optregp(&who,OPT_STRING,"who","Who to say hello to");
optexec("version",write_version,"Write version number and exit");
optEnvVarName( "OPT" );
optDefaultFile( "testoptrc" ); /* in practice, you do ~/.testoptrc */
optMain(go);
optQuit(quit);
opt(&argc,&argv);
return go(argc,argv);
}
|
