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git-fetch, git-branch: Support local --track via a special remote '.'

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This patch adds support for a dummy remote '.' to avoid having
to declare a fake remote like

        [remote "local"]
                url = .
                fetch = refs/heads/*:refs/heads/*

Such a builtin remote simplifies the operation of "git-fetch",
which will populate FETCH_HEAD but will not pretend that two
repositories are in use, will not create a thin pack, and will
not perform any useless remapping of names.  The speed
improvement is around 20%, and it should improve more if
"git-fetch" is converted to a builtin.

To this end, git-parse-remote is grown with a new kind of
remote, 'builtin'.  In git-fetch.sh, we treat the builtin remote
specially in that it needs no pack/store operations.  In fact,
doing git-fetch on a builtin remote will simply populate
FETCH_HEAD appropriately.

The patch also improves of the --track/--no-track support,
extending it so that branch.<name>.remote items referring '.'
can be created.  Finally, it fixes a typo in git-checkout.sh.

Signed-off-by: Paolo Bonzini  <bonzini@gnu.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
This commit is contained in:
Paolo Bonzini
2007-03-15 09:23:20 +01:00
committed by Junio C Hamano
parent 803527f1d9
commit 9debc3241b
7 changed files with 79 additions and 22 deletions
Download Patch File Download Diff File Expand all files Collapse all files

39
builtin-branch.c
View File

@ -372,9 +372,26 @@ static int get_remote_config(const char *key, const char *value)
return 0;
}
static void set_branch_defaults(const char *name, const char *real_ref)
static void set_branch_merge(const char *name, const char *config_remote,
const char *config_repo)
{
char key[1024];
if (sizeof(key) <=
snprintf(key, sizeof(key), "branch.%s.remote", name))
die("what a long branch name you have!");
git_config_set(key, config_remote);
/*
* We do not have to check if we have enough space for
* the 'merge' key, since it's shorter than the
* previous 'remote' key, which we already checked.
*/
snprintf(key, sizeof(key), "branch.%s.merge", name);
git_config_set(key, config_repo);
}
static void set_branch_defaults(const char *name, const char *real_ref)
{
const char *slash = strrchr(real_ref, '/');
if (!slash)
@ -384,21 +401,15 @@ static void set_branch_defaults(const char *name, const char *real_ref)
start_len = strlen(real_ref);
base_len = slash - real_ref;
git_config(get_remote_config);
if (!config_repo && !config_remote &&
!prefixcmp(real_ref, "refs/heads/")) {
set_branch_merge(name, ".", real_ref);
printf("Branch %s set up to track local branch %s.\n",
name, real_ref);
}
if (config_repo && config_remote) {
if (sizeof(key) <=
snprintf(key, sizeof(key), "branch.%s.remote", name))
die("what a long branch name you have!");
git_config_set(key, config_remote);
/*
* We do not have to check if we have enough space for
* the 'merge' key, since it's shorter than the
* previous 'remote' key, which we already checked.
*/
snprintf(key, sizeof(key), "branch.%s.merge", name);
git_config_set(key, config_repo);
set_branch_merge(name, config_remote, config_repo);
printf("Branch %s set up to track remote branch %s.\n",
name, real_ref);
}