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
|
/*
* Copyright (C) 2004-2010 NVIDIA Corporation
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses>.
*
*
* nvgetopt.h
*/
#ifndef __NVGETOPT_H__
#define __NVGETOPT_H__
#define NVGETOPT_FALSE 0
#define NVGETOPT_TRUE 1
/*
* mask of bits not used by nvgetopt in NVGetoptOption::flags;
* these bits are available for use within specific users of
* nvgetopt
*/
#define NVGETOPT_UNUSED_FLAG_RANGE 0xffff0000
/*
* indicates that the option is a boolean value; the presence of the
* option will be interpretted as a TRUE value; if the option is
* prepended with '--no-', the option will be interpretted as a FALSE
* value. On success, nvgetopt will return the parsed boolean value
* through 'boolval'.
*/
#define NVGETOPT_IS_BOOLEAN 0x01
/*
* indicates that the option takes an argument to be interpreted as a
* string; on success, nvgetopt will return the parsed string argument
* through 'strval'.
*/
#define NVGETOPT_STRING_ARGUMENT 0x02
/*
* indicates that the option takes an argument to be interpreted as an
* integer; on success, nvgetopt will return the parsed integer
* argument through 'intval'.
*/
#define NVGETOPT_INTEGER_ARGUMENT 0x04
/*
* indicates that the option takes an argument to be interpreted as
* an double; on success, nvgetopt will return the parsed double
* argument through 'doubleval'.
*/
#define NVGETOPT_DOUBLE_ARGUMENT 0x08
/* helper macro */
#define NVGETOPT_HAS_ARGUMENT (NVGETOPT_STRING_ARGUMENT | \
NVGETOPT_INTEGER_ARGUMENT | \
NVGETOPT_DOUBLE_ARGUMENT)
/*
* indicates that the option, which normally takes an argument, can be
* disabled if the option is prepended with '--no-', in which case,
* the option does not take an argument. If the option is disabled,
* nvgetopt will return TRUE through 'disable_val'.
*
* Note that NVGETOPT_ALLOW_DISABLE can only be used with options that
* take arguments.
*/
#define NVGETOPT_ALLOW_DISABLE 0x10
/*
* indicates that the argument for this option is optional; if no
* argument is present (either the option is already at the end of the
* argv array, or the next option in argv starts with '-'), then the
* option is returned without an argument.
*/
#define NVGETOPT_ARGUMENT_IS_OPTIONAL 0x20
/*
* The NVGETOPT_HELP_ALWAYS flag is not used by nvgetopt() itself, but
* is often used by other users of NVGetoptOption tables, who print
* out basic and advanced help. In such cases, OPTION_HELP_ALWAYS is
* used to indicate that the help for the option should always be
* printed.
*/
#define NVGETOPT_HELP_ALWAYS 0x40
typedef struct {
const char *name;
int val;
unsigned int flags;
char *arg_name; /* not used by nvgetopt() */
char *description; /* not used by nvgetopt() */
} NVGetoptOption;
/*
* nvgetopt() - see the glibc getopt_long(3) manpage for usage
* description. Options can be prepended with "--", "-", or "--no-".
*
* A global variable stores the current index into the argv array, so
* subsequent calls to nvgetopt() will advance through argv[].
*
* On success, the matching NVGetoptOption.val is returned.
*
* If the NVGETOPT_IS_BOOLEAN flag is set, boolval will be set to TRUE
* (or FALSE, if the option string was prepended with "--no-").
*
* disable_val will be assigned TRUE if the option string was
* prepended with "--no-", otherwise it will be assigned FALSE.
*
* If an argument is successfully parsed, one of strval, intval, or
* doubleval will be assigned, based on which of
* NVGETOPT_STRING_ARGUMENT, NVGETOPT_INTEGER_ARGUMENT, or
* NVGETOPT_DOUBLE_ARGUMENT is set in the option's flags. If strval
* is assigned to a non-NULL value by nvgetopt, then it is the
* caller's responsibility to free the string when done with it.
*
* On failure, an error is printed to stderr, and 0 is returned.
*
* When there are no more options to parse, -1 is returned.
*/
int nvgetopt(int argc,
char *argv[],
const NVGetoptOption *options,
char **strval,
int *boolval,
int *intval,
double *doubleval,
int *disable_val);
#endif /* __NVGETOPT_H__ */
|
