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
133
134
135
136
137
|
/* ----------------------------------------------------------
% (C) 1995 Institute for New Generation Computer Technology
% (Read COPYRIGHT for detailed information.)
% (C)1996, 1997, 1998, 1999 Japan Information Processing Development Center
% (Read COPYRIGHT-JIPDEC for detailed information.)
----------------------------------------------------------- */
#include <string.h>
#include <klic/basic.h>
#include <klic/options.h>
static char *
parse_size(str, retp)
long *retp;
char *str;
{
long n;
char c[2];
switch (sscanf(str, "%ld%1s", &n, c)) {
case 1:
*retp = n;
return 0;
case 2:
switch (tolower(c[0])) {
case 'k':
*retp = n << 10;
return 0;
case 'm':
*retp = n << 20;
return 0;
case 'g':
*retp = n << 30;
return 0;
}
}
return str;
}
char *
parse_opts(opttbl, acp, avp)
Const struct opttable *opttbl;
int *acp;
char ***avp;
{
char **argv = *avp;
char *errp;
int argc = *acp;
Const struct opttable *tblp;
int argc_adv;
int no_set = 0; /* -$ option suppress setting variables */
double atof();
for (argc_adv = 1; argc_adv < argc; ++argc_adv) {
char *opttop;
if (argv[argc_adv][0] != '-')
break;
opttop = &argv[argc_adv][1];
if (opttop[0] == '-' && opttop[1] == '\0') { /* options after -- */
++argc_adv;
break;
} else if (opttop[0] == '$' && opttop[1] == '\0') { /* -$ */
no_set = 1;
continue;
}
parse_succesive_arg:
if (opttop[0] == '\0')
goto proc_next_arg;
for (tblp = opttbl; tblp->opt_str; tblp++) {
char *candid_ptr = tblp->opt_str;
int optind;
if (candid_ptr[0] != opttop[0])
continue;
optind = strlen(candid_ptr);
if (strncmp(opttop+1, candid_ptr+1, optind-1))
goto try_next_candidate;
else {
/* We think a option found.
Check the descriptor for the argument */
enum argtype type = ARG_ORIGINAL_TYPE(tblp->opt_type);
if (type == ARG_RESET || type == ARG_SET) { /* on/off */
if (!no_set)
tblp->opt_dest->i = (type==ARG_SET);
opttop += optind;
goto parse_succesive_arg;
} else if (type == ARG_STRING) { /* string output */
/* string option must be mached exactly */
if (opttop[optind] != '\0')
goto try_next_candidate;
else if (argc_adv + 1 >= argc)
/* no argument followed? */
goto try_next_candidate;
argc_adv++;
if (!no_set)
tblp->opt_dest->s = argv[argc_adv];
goto proc_next_arg;
} else { /* float or int case */
char *opts_arg;
if (opttop[optind] != '\0') /* param follows */
opts_arg = &opttop[optind];
else if (argc_adv + 1 >= argc) /*no param followed?*/
goto try_next_candidate;
else { /* parm is the next arg */
argc_adv++;
opts_arg = argv[argc_adv];
}
if (!no_set) {
if (type == ARG_SIZE) { /* size_spec */
errp = parse_size(opts_arg, &(tblp->opt_dest->l));
if (errp)
return errp;
} else if (type == ARG_DOUBLE) { /* floating */
if (sscanf(opts_arg,
"%le", &(tblp->opt_dest->d)) != 1)
return opts_arg;
} else { /* this must not happen!! */
#if 0
fprintf(stderr, "argtab spec internal error\n");
abort();
#endif
}
}
goto proc_next_arg;
}
}
try_next_candidate:;
}
return opttop;
proc_next_arg:;
}
*avp = argv+argc_adv;
*acp = argc-argc_adv;
return 0;
}
|
