Re: [PATCH v3 10/32] commit: add repository argument to parse_commit_buffer

[Derrick Stolee <stolee@gmail.com>]

On 6/28/2018 9:22 PM, Stefan Beller wrote:
> Add a repository argument to allow the callers of parse_commit_buffer
> to be more specific about which repository to act on. This is a small
> mechanical change; it doesn't change the implementation to handle
> repositories other than the_repository yet.
>
> As with the previous commits, use a macro to catch callers passing a
> repository other than the_repository at compile time.
>
> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
> Signed-off-by: Stefan Beller <sbeller@google.com>
> ---
>   commit.c    | 4 ++--
>   commit.h    | 3 ++-
>   object.c    | 2 +-
>   sha1-file.c | 2 +-
>   4 files changed, 6 insertions(+), 5 deletions(-)
>
> diff --git a/commit.c b/commit.c
> index 4803c8be1df..75d0bdede84 100644
> --- a/commit.c
> +++ b/commit.c
> @@ -363,7 +363,7 @@ const void *detach_commit_buffer(struct commit *commit, unsigned long *sizep)
>   	return ret;
>   }
>   
> -int parse_commit_buffer(struct commit *item, const void *buffer, unsigned long size, int check_graph)
> +int parse_commit_buffer_the_repository(struct commit *item, const void *buffer, unsigned long size, int check_graph)
>   {
>   	const char *tail = buffer;
>   	const char *bufptr = buffer;
> @@ -448,7 +448,7 @@ int parse_commit_gently(struct commit *item, int quiet_on_missing)
>   		return error("Object %s not a commit",
>   			     oid_to_hex(&item->object.oid));
>   	}
> -	ret = parse_commit_buffer(item, buffer, size, 0);
> +	ret = parse_commit_buffer(the_repository, item, buffer, size, 0);
>   	if (save_commit_buffer && !ret) {
>   		set_commit_buffer(item, buffer, size);
>   		return 0;
> diff --git a/commit.h b/commit.h
> index cd80dab59c1..f326c13622b 100644
> --- a/commit.h
> +++ b/commit.h
> @@ -82,7 +82,8 @@ struct commit *lookup_commit_reference_by_name(const char *name);
>    */
>   struct commit *lookup_commit_or_die(const struct object_id *oid, const char *ref_name);
>   
> -int parse_commit_buffer(struct commit *item, const void *buffer, unsigned long size, int check_graph);
> +#define parse_commit_buffer(r, i, b, s, g) parse_commit_buffer_##r(i, b, s, g)
> +int parse_commit_buffer_the_repository(struct commit *item, const void *buffer, unsigned long size, int check_graph);
>   int parse_commit_gently(struct commit *item, int quiet_on_missing);
>   static inline int parse_commit(struct commit *item)
>   {

This part also conflicts with ds/commit-graph-fsck because I added a 
'parse_commit_internal' between parse_commit_buffer() and 
parse_commit_gently(). Likely, you'll want to add a repository struct to 
that method, too.

That series also adds new callers to parse_commit_buffer().

> diff --git a/object.c b/object.c
> index 530c55e41e4..5494c0cbaa1 100644
> --- a/object.c
> +++ b/object.c
> @@ -214,7 +214,7 @@ struct object *parse_object_buffer_the_repository(const struct object_id *oid, e
>   	} else if (type == OBJ_COMMIT) {
>   		struct commit *commit = lookup_commit(the_repository, oid);
>   		if (commit) {
> -			if (parse_commit_buffer(commit, buffer, size, 1))
> +			if (parse_commit_buffer(the_repository, commit, buffer, size, 1))
>   				return NULL;
>   			if (!get_cached_commit_buffer(commit, NULL)) {
>   				set_commit_buffer(commit, buffer, size);
> diff --git a/sha1-file.c b/sha1-file.c
> index de4839e634c..75ba30b4ab1 100644
> --- a/sha1-file.c
> +++ b/sha1-file.c
> @@ -1801,7 +1801,7 @@ static void check_commit(const void *buf, size_t size)
>   {
>   	struct commit c;
>   	memset(&c, 0, sizeof(c));
> -	if (parse_commit_buffer(&c, buf, size, 0))
> +	if (parse_commit_buffer(the_repository, &c, buf, size, 0))
>   		die("corrupt commit");
>   }
>