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sha1_file: allow link_alt_odb_entries to handle arbitrary repositories

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Actually this also allows read_info_alternates and link_alt_odb_entry to
handle arbitrary repositories, but link_alt_odb_entries is the most
interesting function in this set of functions, hence the commit subject.

These functions span a strongly connected component in the function
graph, i.e. the recursive call chain might look like

  -> link_alt_odb_entries
    -> link_alt_odb_entry
      -> read_info_alternates
        -> link_alt_odb_entries

That is why we need to convert all these functions at the same time.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Stefan Beller 2018-03-23 18:21:08 +01:00 committed by Junio C Hamano
parent 0b20903405
commit 77f012e876
2 changed files with 20 additions and 20 deletions
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4
object-store.h
View File

@ -18,6 +18,10 @@ struct alternate_object_database {
char loose_objects_subdir_seen[256];
struct oid_array loose_objects_cache;
/*
* Path to the alternative object store. If this is a relative path,
* it is relative to the current working directory.
*/
char path[FLEX_ARRAY];
};
#define prepare_alt_odb(r) prepare_alt_odb_##r()

36
sha1_file.c
View File

@ -390,11 +390,10 @@ static int alt_odb_usable(struct raw_object_store *o,
* SHA1, an extra slash for the first level indirection, and the
* terminating NUL.
*/
#define read_info_alternates(r, rb, d) read_info_alternates_##r(rb, d)
static void read_info_alternates_the_repository(const char *relative_base,
int depth);
#define link_alt_odb_entry(r, e, rb, d, n) link_alt_odb_entry_##r(e, rb, d, n)
static int link_alt_odb_entry_the_repository(const char *entry,
static void read_info_alternates(struct repository *r,
const char *relative_base,
int depth);
static int link_alt_odb_entry(struct repository *r, const char *entry,
const char *relative_base, int depth, const char *normalized_objdir)
{
struct alternate_object_database *ent;
@ -420,7 +419,7 @@ static int link_alt_odb_entry_the_repository(const char *entry,
while (pathbuf.len && pathbuf.buf[pathbuf.len - 1] == '/')
strbuf_setlen(&pathbuf, pathbuf.len - 1);
if (!alt_odb_usable(the_repository->objects, &pathbuf, normalized_objdir)) {
if (!alt_odb_usable(r->objects, &pathbuf, normalized_objdir)) {
strbuf_release(&pathbuf);
return -1;
}
@ -428,12 +427,12 @@ static int link_alt_odb_entry_the_repository(const char *entry,
ent = alloc_alt_odb(pathbuf.buf);
/* add the alternate entry */
*the_repository->objects->alt_odb_tail = ent;
the_repository->objects->alt_odb_tail = &(ent->next);
*r->objects->alt_odb_tail = ent;
r->objects->alt_odb_tail = &(ent->next);
ent->next = NULL;
/* recursively add alternates */
read_info_alternates(the_repository, pathbuf.buf, depth + 1);
read_info_alternates(r, pathbuf.buf, depth + 1);
strbuf_release(&pathbuf);
return 0;
@ -468,12 +467,8 @@ static const char *parse_alt_odb_entry(const char *string,
return end;
}
#define link_alt_odb_entries(r, a, s, rb, d) \
link_alt_odb_entries_##r(a, s, rb, d)
static void link_alt_odb_entries_the_repository(const char *alt,
int sep,
const char *relative_base,
int depth)
static void link_alt_odb_entries(struct repository *r, const char *alt,
int sep, const char *relative_base, int depth)
{
struct strbuf objdirbuf = STRBUF_INIT;
struct strbuf entry = STRBUF_INIT;
@ -487,7 +482,7 @@ static void link_alt_odb_entries_the_repository(const char *alt,
return;
}
strbuf_add_absolute_path(&objdirbuf, get_object_directory());
strbuf_add_absolute_path(&objdirbuf, r->objects->objectdir);
if (strbuf_normalize_path(&objdirbuf) < 0)
die("unable to normalize object directory: %s",
objdirbuf.buf);
@ -496,15 +491,16 @@ static void link_alt_odb_entries_the_repository(const char *alt,
alt = parse_alt_odb_entry(alt, sep, &entry);
if (!entry.len)
continue;
link_alt_odb_entry(the_repository, entry.buf,
link_alt_odb_entry(r, entry.buf,
relative_base, depth, objdirbuf.buf);
}
strbuf_release(&entry);
strbuf_release(&objdirbuf);
}
static void read_info_alternates_the_repository(const char *relative_base,
int depth)
static void read_info_alternates(struct repository *r,
const char *relative_base,
int depth)
{
char *path;
struct strbuf buf = STRBUF_INIT;
@ -516,7 +512,7 @@ static void read_info_alternates_the_repository(const char *relative_base,
return;
}
link_alt_odb_entries(the_repository, buf.buf, '\n', relative_base, depth);
link_alt_odb_entries(r, buf.buf, '\n', relative_base, depth);
strbuf_release(&buf);
free(path);
}