Re: [PATCH v2 1/2] read-cache: factor out get_sha1_from_index() helper

> From: Torsten Bögershausen <tboegi@web.de>
>
> Factor out the retrieval of the sha1 for a given path in
> read_blob_data_from_index() into the function get_sha1_from_index().
>
> This will be used in the next commit, when convert.c can do the
> analyze for "text=auto" without slurping the whole blob into memory
> at once.
>
> Add a wrapper definition get_sha1_from_cache().
>
> Signed-off-by: Torsten Bögershausen <tboegi@web.de>
> ---
>  cache.h      |  3 +++
>  read-cache.c | 29 ++++++++++++++++++-----------
>  2 files changed, 21 insertions(+), 11 deletions(-)
>
> diff --git a/cache.h b/cache.h
> index 1604e29..04de209 100644
> --- a/cache.h
> +++ b/cache.h
> @@ -380,6 +380,7 @@ extern void free_name_hash(struct index_state *istate);
>  #define unmerge_cache_entry_at(at) unmerge_index_entry_at(&the_index, at)
>  #define unmerge_cache(pathspec) unmerge_index(&the_index, pathspec)
>  #define read_blob_data_from_cache(path, sz) read_blob_data_from_index(&the_index, (path), (sz))
> +#define get_sha1_from_cache(path)  get_sha1_from_index (&the_index, (path))