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
|
/**
* @defgroup util_opt_h util_opt: Command line options interface
* @{
* @brief Parse the command line options
*
* Copyright IBM Corp. 2016, 2017
*
* s390-tools is free software; you can redistribute it and/or modify
* it under the terms of the MIT license. See LICENSE for details.
*/
#ifndef LIB_UTIL_OPT_H
#define LIB_UTIL_OPT_H
#include <getopt.h>
#include <unistd.h>
/* Flag indicating that an option does not have a short form */
#define UTIL_OPT_FLAG_NOSHORT 1
/* Flag indicating that an option does not have a long form */
#define UTIL_OPT_FLAG_NOLONG 2
/* Flag indicating that this is a section heading */
#define UTIL_OPT_FLAG_SECTION 4
/**
* Command line option
*/
struct util_opt {
/** Defined by getopt.h, see "man getopt_long" */
struct option option;
/** For options with arguments: Argument name */
char *argument;
/** Description displayed for --help */
char *desc;
/** Flags for this option */
int flags;
/** Command to which this option belongs. NULL means all commands */
char *command;
};
/**
* Standard option: --help
*/
#define UTIL_OPT_HELP \
{ \
.option = { "help", 0, NULL, 'h' }, \
.desc = "Print this help, then exit", \
}
/**
* Standard option: --version
*/
#define UTIL_OPT_VERSION \
{ \
.option = { "version", 0, NULL, 'v' }, \
.desc = "Print version information, then exit", \
}
/**
* End-marker for the option pointer vector
*/
#define UTIL_OPT_END \
{ \
.option = { NULL, 0, NULL, 0 }, \
}
/**
* Section header
*/
#define UTIL_OPT_SECTION(title) \
{ \
.desc = (title), \
.flags = UTIL_OPT_FLAG_SECTION, \
}
/*
* Option functions
*/
void util_opt_init(struct util_opt *opt_vec, const char *opt_prefix);
void util_opt_set_command(const char *command);
int util_opt_getopt_long(int argc, char *argv[]);
void util_opt_print_help(void);
void util_opt_print_indented(const char *opt, const char *desc);
void util_opt_print_parse_error(char opt, char *argv[]);
#endif /** LIB_UTIL_OPT_H @} */
|
