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[common] rework option API to allow for custom types

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This commit is contained in:
Geoffrey McRae
2019-05-11 20:58:49 +10:00
parent 5b199d8f25
commit 538a6dc08e
3 changed files with 129 additions and 89 deletions
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45
common/include/common/option.h
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@@ -25,45 +25,42 @@ enum OptionType
OPTION_TYPE_NONE = 0,
OPTION_TYPE_INT,
OPTION_TYPE_STRING,
OPTION_TYPE_BOOL
OPTION_TYPE_BOOL,
OPTION_TYPE_CUSTOM
};
struct OptionState;
struct OptionValue
{
enum OptionType type;
union
{
int x_int;
char * x_string;
bool x_bool;
}
v;
// internal state
struct OptionState * state;
};
struct Option;
struct Option
{
const char * module;
const char * name;
const char * description;
struct OptionValue value;
bool (*validator)(struct OptionValue * value, const char ** error);
void (*printHelp)();
enum OptionType type;
union
{
int x_int;
char * x_string;
bool x_bool;
void * x_custom;
}
value;
bool (*parser )(struct Option * opt, const char * str);
bool (*validator)(struct Option * opt, const char ** error);
char * (*toString )(struct Option * opt);
void (*printHelp)();
};
// register an NULL terminated array of options
bool option_register(struct Option options[]);
// lookup the value of an option
struct OptionValue * option_get (const char * module, const char * name);
int option_get_int (const char * module, const char * name);
const char * option_get_string(const char * module, const char * name);
bool option_get_bool (const char * module, const char * name);
struct Option * option_get (const char * module, const char * name);
int option_get_int (const char * module, const char * name);
const char * option_get_string(const char * module, const char * name);
bool option_get_bool (const char * module, const char * name);
// called by the main application to parse the command line arguments
bool option_parse(int argc, char * argv[]);