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Add a library function to add an alternate to the alternates file

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This is in the core so that, if the alternates file has already been
read, the addition can be parsed and put into effect for the current
process.

Signed-off-by: Daniel Barkalow <barkalow@iabervon.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Daniel Barkalow 2008-04-17 19:32:30 -04:00 committed by Junio C Hamano
parent ea3cd5c7c6
commit bef70b22ba
2 changed files with 13 additions and 0 deletions
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1
cache.h
View File

@ -599,6 +599,7 @@ extern struct alternate_object_database {
char base[FLEX_ARRAY]; /* more */
} *alt_odb_list;
extern void prepare_alt_odb(void);
extern void add_to_alternates_file(const char *reference);
struct pack_window {
struct pack_window *next;

12
sha1_file.c
View File

@ -380,6 +380,18 @@ static void read_info_alternates(const char * relative_base, int depth)
munmap(map, mapsz);
}
void add_to_alternates_file(const char *reference)
{
struct lock_file *lock = xcalloc(1, sizeof(struct lock_file));
int fd = hold_lock_file_for_append(lock, git_path("objects/info/alternates"), 1);
char *alt = mkpath("%s/objects\n", reference);
write_or_die(fd, alt, strlen(alt));
if (commit_lock_file(lock))
die("could not close alternates file");
if (alt_odb_tail)
link_alt_odb_entries(alt, alt + strlen(alt), '\n', NULL, 0);
}
void prepare_alt_odb(void)
{
const char *alt;