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
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
|
#include <config.h>
/* $Id: getarg.c,v 1.13 1994/11/08 13:30:50 a904209 Exp a904209 $
*/
char *getarg_id = "$Id: getarg.c,v 1.13 1994/11/08 13:30:50 a904209 Exp a904209 $";
#if defined(__STDC__)
#include <stdarg.h>
#else
#include <varargs.h>
#endif
#include <stdio.h>
#include <ctype.h>
#include <useconfig.h>
#include "proto.h"
#include "getargs.h"
int help_only = 0;
/*
Usage is like :
argc = getargs("Module",argc,argv,
"r", "%d", &rate, "Integer",
"u", "", &ufile_name, "String",
"g", "%d", &gain, "Double",
"a", NULL, &use_audio, "Boolean -a toggles, +a sets",
"s", "" , &speaker, "Booelan -s clears, +s sets",
NULL);
*/
#if defined(__STDC__)
int
getargs(char *module,int argc, char *argv[],...)
#else
int
getargs(module, argc, argv, va_alist)
char *module;
int argc;
char *argv[];
va_dcl
#endif
{
va_list ap;
int i = 0;
int done_module = 0;
while (i < argc)
{
char *s = argv[i];
int flag = *s++;
if (*s && (flag == '-' || flag == '+'))
{
int off = 1;
while (*s)
{
char *a;
int count = 0;
#if defined(__STDC__)
va_start(ap, argv);
#else
va_start(ap);
#endif
while ((a = va_arg(ap, char *)))
{
int l = strlen(a);
char *fmt = va_arg(ap, char *);
void *var = va_arg(ap, void *);
char *desc = va_arg(ap, char *);
if (!strcmp(s,"-help"))
{
help_only = 1;
if (!done_module++)
fprintf(stderr,"%s:\n",module);
if (fmt)
{char *x = strchr(fmt,'%');
if (x)
{
fprintf(stderr," -%s <%s> [",a,x+1);
switch(*(x+strlen(x)-1))
{
case 'e':
case 'f':
case 'g':
fprintf(stderr,fmt,*((double *) var));
break;
case 'u':
case 'd':
if (x[1] == 'l')
fprintf(stderr,fmt,*((long *) var));
else
fprintf(stderr,fmt,*((int *) var));
break;
}
fprintf(stderr,"]\t%s\n",desc);
}
else
fprintf(stderr," -%s <string> [%s]\t%s\n",a,
*((char **) var) ? *((char **) var) : "", desc);
}
else
{
fprintf(stderr," [+|-]%s [%s]\t%s\n",a,
*((int *) var) ? "yes" : "no",desc);
}
}
else if (l > 1)
{
if (!count && !strcmp(s, a))
{
if (fmt)
{
if (i + off < argc)
{
char *x = argv[i + off++];
if (strchr(fmt, '%'))
{
if (sscanf(x, fmt, var) != 1)
fprintf(stderr, "%s : %s invalid after -%s\n", argv[0], x, a);
}
else
*((char **) var) = x;
}
else
fprintf(stderr, "%s : no argument after -%s\n", argv[0], a);
}
else
{
if (flag == '+')
*((int *) var) = !0;
else
*((int *) var) = !*((int *) var);
}
/* skip to end of string */
count++;
s += l;
break; /* out of va_arg loop */
}
}
else
{
if (*s == *a)
{
if (fmt)
{
if (i + off < argc)
{
char *x = argv[i + off++];
if (strchr(fmt, '%'))
{
if (sscanf(x, fmt, var) != 1)
fprintf(stderr, "%s : %s invalid after -%s\n", argv[0], x, a);
}
else
*((char **) var) = x;
}
else
fprintf(stderr, "%s : no argument after -%s\n", argv[0], a);
}
else
{
if (fmt || flag == '+')
*((int *) var) = (flag == '+');
else
*((int *) var) = !*((int *) var);
}
count++;
s++;
break; /* out of va_arg loop */
}
}
}
va_end(ap);
if (!count)
{
off = 0;
break; /* Out of s loop */
}
}
if (off != 0)
{
int j;
argc -= off;
for (j = i; j <= argc; j++)
argv[j] = argv[j + off];
}
else
i++;
}
else
i++;
}
if (help_only && done_module)
fprintf(stderr,"\n");
return argc;
}
|
