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path.c: add xdg_cache_home

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We already have xdg_config_home to format paths relative to
XDG_CONFIG_HOME. Let's provide a similar function xdg_cache_home to do
the same for paths relative to XDG_CACHE_HOME.

Signed-off-by: Devin Lehmacher <lehmacdj@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Devin Lehmacher 2017-03-13 16:43:54 -04:00 committed by Junio C Hamano
parent d6db3f2165
commit e7f136bf93
2 changed files with 22 additions and 0 deletions
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7
cache.h
View file

@ -1169,6 +1169,13 @@ extern int is_ntfs_dotgit(const char *name);
*/
extern char *xdg_config_home(const char *filename);
/**
* Return a newly allocated string with the evaluation of
* "$XDG_CACHE_HOME/git/$filename" if $XDG_CACHE_HOME is non-empty, otherwise
* "$HOME/.cache/git/$filename". Return NULL upon error.
*/
extern char *xdg_cache_home(const char *filename);
/* object replacement */
#define LOOKUP_REPLACE_OBJECT 1
#define LOOKUP_UNKNOWN_OBJECT 2

15
path.c
View file

@ -1272,6 +1272,21 @@ char *xdg_config_home(const char *filename)
return NULL;
}
char *xdg_cache_home(const char *filename)
{
const char *home, *cache_home;
assert(filename);
cache_home = getenv("XDG_CACHE_HOME");
if (cache_home && *cache_home)
return mkpathdup("%s/git/%s", cache_home, filename);
home = getenv("HOME");
if (home)
return mkpathdup("%s/.cache/git/%s", home, filename);
return NULL;
}
GIT_PATH_FUNC(git_path_cherry_pick_head, "CHERRY_PICK_HEAD")
GIT_PATH_FUNC(git_path_revert_head, "REVERT_HEAD")
GIT_PATH_FUNC(git_path_squash_msg, "SQUASH_MSG")