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config: read config from a repository object

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Teach the config machinery to read config information from a repository
object.  This involves storing a 'struct config_set' inside the
repository object and adding a number of functions (repo_config*) to be
able to query a repository's config.

The current config API enables lazy-loading of the config.  This means
that when 'git_config_get_int()' is called, if the_config_set hasn't
been populated yet, then it will be populated and properly initialized by
reading the necessary config files (system wide .gitconfig, user's home
.gitconfig, and the repository's config).  To maintain this paradigm,
the new API to read from a repository object's config will also perform
this lazy-initialization.

Since both APIs (git_config_get* and repo_config_get*) have the same
semantics we can migrate the default config to be stored within
'the_repository' and just have the 'git_config_get*' family of functions
redirect to the 'repo_config_get*' functions.

Signed-off-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Brandon Williams
2017-06-22 11:43:42 -07:00
committed by Junio C Hamano
parent b42b0c0919
commit 3b256228a6
4 changed files with 184 additions and 75 deletions
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24
config.h
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@ -163,6 +163,30 @@ extern int git_configset_get_bool_or_int(struct config_set *cs, const char *key,
extern int git_configset_get_maybe_bool(struct config_set *cs, const char *key, int *dest);
extern int git_configset_get_pathname(struct config_set *cs, const char *key, const char **dest);
/* Functions for reading a repository's config */
struct repository;
extern void repo_config(struct repository *repo, config_fn_t fn, void *data);
extern int repo_config_get_value(struct repository *repo,
const char *key, const char **value);
extern const struct string_list *repo_config_get_value_multi(struct repository *repo,
const char *key);
extern int repo_config_get_string_const(struct repository *repo,
const char *key, const char **dest);
extern int repo_config_get_string(struct repository *repo,
const char *key, char **dest);
extern int repo_config_get_int(struct repository *repo,
const char *key, int *dest);
extern int repo_config_get_ulong(struct repository *repo,
const char *key, unsigned long *dest);
extern int repo_config_get_bool(struct repository *repo,
const char *key, int *dest);
extern int repo_config_get_bool_or_int(struct repository *repo,
const char *key, int *is_bool, int *dest);
extern int repo_config_get_maybe_bool(struct repository *repo,
const char *key, int *dest);
extern int repo_config_get_pathname(struct repository *repo,
const char *key, const char **dest);
extern int git_config_get_value(const char *key, const char **value);
extern const struct string_list *git_config_get_value_multi(const char *key);
extern void git_config_clear(void);