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userdiff: add and use for_each_userdiff_driver()

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Refactor the userdiff_find_by_namelen() function so that a new
for_each_userdiff_driver() API function does most of the work.

This will be useful for the same reason we've got other for_each_*()
API functions as part of various APIs, and will be used in a follow-up
commit.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Ævar Arnfjörð Bjarmason
2021-04-08 17:04:19 +02:00
committed by Junio C Hamano
parent 82512e008c
commit f12fa9ee6c
2 changed files with 71 additions and 12 deletions
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13
userdiff.h
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@ -21,6 +21,12 @@ struct userdiff_driver {
struct notes_cache *textconv_cache;
int textconv_want_cache;
};
enum userdiff_driver_type {
USERDIFF_DRIVER_TYPE_BUILTIN = 1<<0,
USERDIFF_DRIVER_TYPE_CUSTOM = 1<<1,
};
typedef int (*each_userdiff_driver_fn)(struct userdiff_driver *,
enum userdiff_driver_type, void *);
int userdiff_config(const char *k, const char *v);
struct userdiff_driver *userdiff_find_by_name(const char *name);
@ -34,4 +40,11 @@ struct userdiff_driver *userdiff_find_by_path(struct index_state *istate,
struct userdiff_driver *userdiff_get_textconv(struct repository *r,
struct userdiff_driver *driver);
/*
* Iterate over all userdiff drivers. The userdiff_driver_type
* argument to each_userdiff_driver_fn indicates their type. Return
* non-zero to exit early from the loop.
*/
int for_each_userdiff_driver(each_userdiff_driver_fn, void *);
#endif /* USERDIFF */