From: Junio C Hamano <gitster@pobox.com>
To: Paul Tan <pyokagan@gmail.com>
Cc: git@vger.kernel.org, Stefan Beller <sbeller@google.com>,
Johannes Schindelin <johannes.schindelin@gmx.de>,
Stephen Robin <stephen.robin@gmail.com>
Subject: Re: [PATCH v2 15/19] pull: teach git pull about --rebase
Date: Tue, 09 Jun 2015 18:56:11 -0700 [thread overview]
Message-ID: <xmqqk2vcuy10.fsf@gitster.dls.corp.google.com> (raw)
In-Reply-To: <1433314143-4478-16-git-send-email-pyokagan@gmail.com> (Paul Tan's message of "Wed, 3 Jun 2015 14:48:59 +0800")
Paul Tan <pyokagan@gmail.com> writes:
> +enum rebase_type {
> + REBASE_INVALID = -1,
> + REBASE_FALSE = 0,
> + REBASE_TRUE,
> + REBASE_PRESERVE
> +};
> +
> +/**
> + * Parses the value of --rebase, branch.*.rebase or pull.rebase. If value is a
> + * false value, returns REBASE_FALSE. If value is a true value, returns
> + * REBASE_TRUE. If value is "preserve", returns REBASE_PRESERVE. Otherwise,
> + * returns -1 to signify an invalid value.
> + */
> +static enum rebase_type parse_config_rebase(const char *value)
> +{
> + int v = git_config_maybe_bool("pull.rebase", value);
> + if (!v)
> + return REBASE_FALSE;
> + else if (v >= 0)
> + return REBASE_TRUE;
It is somewhat misleading to say "v >= 0" when you already use !v to
signal something else. Perhaps "else if (v > 0)" is better?
> +/**
> + * Returns remote's upstream branch for the current branch. If remote is NULL,
> + * the current branch's configured default remote is used. Returns NULL if
> + * `remote` does not name a valid remote, HEAD does not point to a branch,
> + * remote is not the branch's configured remote or the branch does not have any
> + * configured upstream branch.
> + */
> +static char *get_upstream_branch(const char *remote)
> +{
> + struct remote *rm;
> + struct branch *curr_branch;
> +
> + rm = remote_get(remote);
> + if (!rm)
> + return NULL;
> +
> + curr_branch = branch_get("HEAD");
> + if (!curr_branch)
> + return NULL;
> +
> + if (curr_branch->remote != rm)
> + return NULL;
> +
> + if (!curr_branch->merge_nr)
> + return NULL;
> +
> + return xstrdup(curr_branch->merge[0]->dst);
> +}
Hmph, it is somewhat surprising that we do not have such a helper
already. Wouldn't we need this logic to implement $branch@{upstream}
syntax?
> +/**
> + * Derives the remote tracking branch from the remote and refspec.
> + *
> + * FIXME: The current implementation assumes the default mapping of
> + * refs/heads/<branch_name> to refs/remotes/<remote_name>/<branch_name>.
> + */
> +static char *get_tracking_branch(const char *remote, const char *refspec)
> +{
This does smell like an incomplete reimplementation of what
get_fetch_map() knows how to do.
> +/**
> + * Given the repo and refspecs, sets fork_point to the point at which the
> + * current branch forked from its remote tracking branch. Returns 0 on success,
> + * -1 on failure.
> + */
> +static int get_rebase_fork_point(unsigned char fork_point[GIT_SHA1_RAWSZ],
> + const char *repo, const char *refspec)
> +{
> +...
> +}
This function looks OK (the two get_*_branch() helpers it uses I am
not sure about though).
Same comment on "fork_point[]" parameter's type applies here,
though. While I do not mind if you used "struct object_id" to
represent these object names, if you are sticking to the traditional
"unsigned char [20]", then these should be "unsigned char *" to be
consistent with others.
> +/**
> + * Sets merge_base to the octopus merge base of curr_head, merge_head and
> + * fork_point. Returns 0 if a merge base is found, 1 otherwise.
> + */
> +static int get_octopus_merge_base(unsigned char merge_base[GIT_SHA1_HEXSZ],
> + unsigned char curr_head[GIT_SHA1_RAWSZ],
> + unsigned char merge_head[GIT_SHA1_RAWSZ],
> + unsigned char fork_point[GIT_SHA1_RAWSZ])
> +{
> +...
> +}
OK (and everything after this point looks good).
next prev parent reply other threads:[~2015-06-10 1:56 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-03 6:48 [PATCH v2 00/19] Make git-pull a builtin Paul Tan
2015-06-03 6:48 ` [PATCH v2 01/19] parse-options-cb: implement parse_opt_pass_strbuf() Paul Tan
2015-06-09 23:11 ` Junio C Hamano
2015-06-03 6:48 ` [PATCH v2 02/19] parse-options-cb: implement parse_opt_pass_argv_array() Paul Tan
2015-06-03 16:56 ` Stefan Beller
2015-06-09 23:16 ` Junio C Hamano
2015-06-10 7:11 ` Paul Tan
2015-06-10 8:03 ` Junio C Hamano
2015-06-03 6:48 ` [PATCH v2 03/19] argv-array: implement argv_array_pushv() Paul Tan
2015-06-03 6:48 ` [PATCH v2 04/19] pull: implement skeletal builtin pull Paul Tan
2015-06-10 0:23 ` Junio C Hamano
2015-06-03 6:48 ` [PATCH v2 05/19] pull: implement fetch + merge Paul Tan
2015-06-09 23:27 ` Junio C Hamano
2015-06-03 6:48 ` [PATCH v2 06/19] pull: pass verbosity, --progress flags to fetch and merge Paul Tan
2015-06-09 23:36 ` Junio C Hamano
2015-06-03 6:48 ` [PATCH v2 07/19] pull: pass git-merge's options to git-merge Paul Tan
2015-06-03 6:48 ` [PATCH v2 08/19] pull: pass git-fetch's options to git-fetch Paul Tan
2015-06-03 17:16 ` Stefan Beller
2015-06-03 6:48 ` [PATCH v2 09/19] pull: error on no merge candidates Paul Tan
2015-06-09 23:56 ` Junio C Hamano
2015-06-13 5:52 ` Paul Tan
2015-06-03 6:48 ` [PATCH v2 10/19] pull: support pull.ff config Paul Tan
2015-06-09 23:59 ` Junio C Hamano
2015-06-03 6:48 ` [PATCH v2 11/19] pull: check if in unresolved merge state Paul Tan
2015-06-10 1:29 ` Junio C Hamano
2015-06-10 14:38 ` Junio C Hamano
2015-06-10 15:12 ` Paul Tan
2015-06-10 17:14 ` Junio C Hamano
2015-06-14 7:44 ` Paul Tan
2015-06-03 6:48 ` [PATCH v2 12/19] pull: fast-forward working tree if head is updated Paul Tan
2015-06-03 6:48 ` [PATCH v2 13/19] pull: implement pulling into an unborn branch Paul Tan
2015-06-10 1:31 ` Junio C Hamano
2015-06-03 6:48 ` [PATCH v2 14/19] pull: set reflog message Paul Tan
2015-06-03 6:48 ` [PATCH v2 15/19] pull: teach git pull about --rebase Paul Tan
2015-06-10 1:56 ` Junio C Hamano [this message]
2015-06-10 7:55 ` Paul Tan
2015-06-10 14:44 ` Junio C Hamano
2015-06-10 15:35 ` Paul Tan
2015-06-10 16:13 ` Junio C Hamano
2015-06-10 23:02 ` Junio C Hamano
2015-06-03 6:49 ` [PATCH v2 16/19] pull: configure --rebase via branch.<name>.rebase or pull.rebase Paul Tan
2015-06-03 6:49 ` [PATCH v2 17/19] pull --rebase: exit early when the working directory is dirty Paul Tan
2015-06-03 10:27 ` Kevin Daudt
2015-06-10 5:53 ` Kevin Daudt
2015-06-03 6:49 ` [PATCH v2 18/19] pull --rebase: error on no merge candidate cases Paul Tan
2015-06-03 17:38 ` Stefan Beller
2015-06-03 6:49 ` [PATCH v2 19/19] pull: remove redirection to git-pull.sh Paul Tan
2015-06-03 17:49 ` Stefan Beller
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