On 05/10/14 09:15, René Scharfe wrote:
> Am 03.10.2014 um 22:32 schrieb Jeff King:
>> We typically iterate over the reachable objects in a
>> repository by starting at the tips and walking the graph.
>> There's no easy way to iterate over all of the objects,
>> including unreachable ones. Let's provide a way of doing so.
>>
>> Signed-off-by: Jeff King <p...@peff.net>
>> ---
>> cache.h | 11 +++++++++++
>> sha1_file.c | 62
>> +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>> 2 files changed, 73 insertions(+)
>>
>> diff --git a/cache.h b/cache.h
>> index 7abe7f6..3826b4b 100644
>> --- a/cache.h
>> +++ b/cache.h
>> @@ -1270,6 +1270,17 @@ int for_each_loose_file_in_objdir(const char *path,
>> each_loose_subdir_fn subdir_cb,
>> void *data);
>>
>> +/*
>> + * Iterate over loose and packed objects in both the local
>> + * repository and any alternates repositories.
>> + */
>> +typedef int each_packed_object_fn(const unsigned char *sha1,
>> + struct packed_git *pack,
>> + uint32_t pos,
>> + void *data);
>> +extern int for_each_loose_object(each_loose_object_fn, void *);
>> +extern int for_each_packed_object(each_packed_object_fn, void *);
>> +
>> struct object_info {
>> /* Request */
>> enum object_type *typep;
>> diff --git a/sha1_file.c b/sha1_file.c
>> index 9fdad47..d017289 100644
>> --- a/sha1_file.c
>> +++ b/sha1_file.c
>> @@ -3313,3 +3313,65 @@ int for_each_loose_file_in_objdir(const char *path,
>> strbuf_release(&buf);
>> return r;
>> }
>> +
>> +struct loose_alt_odb_data {
>> + each_loose_object_fn *cb;
>> + void *data;
>> +};
>> +
>> +static int loose_from_alt_odb(struct alternate_object_database *alt,
>> + void *vdata)
>> +{
>> + struct loose_alt_odb_data *data = vdata;
>> + return for_each_loose_file_in_objdir(alt->base,
>> + data->cb, NULL, NULL,
>> + data->data);
>> +}
>> +
>> +int for_each_loose_object(each_loose_object_fn cb, void *data)
>> +{
>> + struct loose_alt_odb_data alt;
>> + int r;
>> +
>> + r = for_each_loose_file_in_objdir(get_object_directory(),
>> + cb, NULL, NULL, data);
>> + if (r)
>> + return r;
>> +
>> + alt.cb = cb;
>> + alt.data = data;
>> + return foreach_alt_odb(loose_from_alt_odb, &alt);
>> +}
>> +
>> +int for_each_object_in_pack(struct packed_git *p, each_packed_object_fn cb,
>> void *data)
>
> Should this one be declared static? It seems to be used only in sha1_file.c.
Heh, I was just about to make the same observation myself (with included patch).
I could imagine this function being useful elsewhere, but until it gains some
more external callers I think it should remain static (so it doesn't cause a
sparse warning), rather than add an extern declaration to cache.h (which would
also suppress sparse).
ATB,
Ramsay Jones
>
>> +{
>> + uint32_t i;
>> + int r = 0;
>> +
>> + for (i = 0; i < p->num_objects; i++) {
>> + const unsigned char *sha1 = nth_packed_object_sha1(p, i);
>> +
>> + if (!sha1)
>> + return error("unable to get sha1 of object %u in %s",
>> + i, p->pack_name);
>> +
>> + r = cb(sha1, p, i, data);
>> + if (r)
>> + break;
>> + }
>> + return r;
>> +}
>> +
>> +int for_each_packed_object(each_packed_object_fn cb, void *data)
>> +{
>> + struct packed_git *p;
>> + int r = 0;
>> +
>> + prepare_packed_git();
>> + for (p = packed_git; p; p = p->next) {
>> + r = for_each_object_in_pack(p, cb, data);
>> + if (r)
>> + break;
>> + }
>> + return 0;
>> +}
>
> Perhaps return r instead here?
>
> René
>
>
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