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parse-options: be able to generate usages automatically

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Signed-off-by: Pierre Habouzit <madcoder@debian.org>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
This commit is contained in:
Pierre Habouzit
2007-10-15 01:38:30 +02:00
committed by Junio C Hamano
parent 4a59fd1312
commit d7a38c54a6
2 changed files with 79 additions and 9 deletions
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15
parse-options.h
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@ -3,6 +3,7 @@
enum parse_opt_type {
OPTION_END,
OPTION_GROUP,
OPTION_BOOLEAN,
OPTION_STRING,
OPTION_INTEGER,
@ -17,12 +18,15 @@ struct option {
int short_name;
const char *long_name;
void *value;
const char *argh;
const char *help;
};
#define OPT_END() { OPTION_END }
#define OPT_BOOLEAN(s, l, v, h) { OPTION_BOOLEAN, (s), (l), (v) }
#define OPT_INTEGER(s, l, v, h) { OPTION_INTEGER, (s), (l), (v) }
#define OPT_STRING(s, l, v, a, h) { OPTION_STRING, (s), (l), (v) }
#define OPT_GROUP(h) { OPTION_GROUP, 0, NULL, NULL, NULL, (h) }
#define OPT_BOOLEAN(s, l, v, h) { OPTION_BOOLEAN, (s), (l), (v), NULL, (h) }
#define OPT_INTEGER(s, l, v, h) { OPTION_INTEGER, (s), (l), (v), NULL, (h) }
#define OPT_STRING(s, l, v, a, h) { OPTION_STRING, (s), (l), (v), (a), (h) }
/* parse_options() will filter out the processed options and leave the
* non-option argments in argv[].
@ -30,6 +34,9 @@ struct option {
*/
extern int parse_options(int argc, const char **argv,
const struct option *options,
const char *usagestr, int flags);
const char * const usagestr[], int flags);
extern NORETURN void usage_with_options(const char * const *usagestr,
const struct option *options);
#endif