On Tue, Feb 4, 2014 at 2:54 AM, Jens Lehmann <jens.lehm...@web.de> wrote:
> Implement the functionality needed to enable work tree manipulating
> commands so that an changed submodule does not only affect the index but
> it also updates the work tree of any initialized submodule according to
> the SHA-1 recorded in the superproject.
>
> Signed-off-by: Jens Lehmann <jens.lehm...@web.de>
> ---
> entry.c | 15 ++++++++--
> submodule.c | 86
> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> submodule.h | 3 ++
> unpack-trees.c | 69 ++++++++++++++++++++++++++++++++++++----------
> unpack-trees.h | 1 +
> 5 files changed, 157 insertions(+), 17 deletions(-)
>
> diff --git a/entry.c b/entry.c
> index d1bf6ec..61a2767 100644
> --- a/entry.c
> +++ b/entry.c
> @@ -265,7 +265,7 @@ int checkout_entry(struct cache_entry *ce,
>
> if (!check_path(path, len, &st, state->base_dir_len)) {
> unsigned changed = ce_match_stat(ce, &st,
> CE_MATCH_IGNORE_VALID|CE_MATCH_IGNORE_SKIP_WORKTREE);
> - if (!changed)
> + if (!changed && (!S_ISDIR(st.st_mode) ||
> !S_ISGITLINK(ce->ce_mode)))
> return 0;
Should we report something when ce is a gitlink, but path is not a
directory, instead of siliently exit?
> diff --git a/submodule.c b/submodule.c
> index 3907034..83e7595 100644
> --- a/submodule.c
> +++ b/submodule.c
> @@ -520,6 +520,42 @@ int depopulate_submodule(const char *path)
> return 0;
> }
>
> +int update_submodule(const char *path, const unsigned char sha1[20], int
> force)
> +{
> + struct strbuf buf = STRBUF_INIT;
> + struct child_process cp;
> + const char *hex_sha1 = sha1_to_hex(sha1);
> + const char *argv[] = {
> + "checkout",
> + force ? "-fq" : "-q",
respect "state->quiet" in checkout_entry() as well?
> + hex_sha1,
> + NULL,
> + };
> + const char *git_dir;
> +
> + strbuf_addf(&buf, "%s/.git", path);
> + git_dir = read_gitfile(buf.buf);
> + if (!git_dir)
> + git_dir = buf.buf;
> + if (!is_directory(git_dir)) {
> + strbuf_release(&buf);
> + /* The submodule is not populated, so we can't check it out */
> + return 0;
> + }
> + strbuf_release(&buf);
> +
> + memset(&cp, 0, sizeof(cp));
> + cp.argv = argv;
> + cp.env = local_repo_env;
> + cp.git_cmd = 1;
> + cp.no_stdin = 1;
> + cp.dir = path; /* GIT_WORK_TREE doesn't work for git checkout */
And if we do respect --quiet and it's not specified, paths printed by
this process is relative to "dir", not to user cwd. Could be
confusing.
> + if (run_command(&cp))
> + return error("Could not checkout submodule %s", path);
> +
> + return 0;
> +}
> +
--
Duy
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