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Implement analog for 'git checkout --branch xxx ...'

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This commit is contained in:
Sascha Cunz 2013-01-11 02:45:55 +01:00
parent 132c2db6a9
commit 88aef76635
2 changed files with 34 additions and 1 deletions
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3
include/git2/clone.h
View File

@ -57,6 +57,8 @@ GIT_BEGIN_DECL
* the origin remote before the fetch is initiated.
* - `remote_autotag` may be used to specify the autotag setting before the
* initial fetch.
* - `checkout_branch` gives the name of the branch to checkout. NULL means
* use the remote's HEAD.
*/
typedef struct git_clone_options {
@ -76,6 +78,7 @@ typedef struct git_clone_options {
git_transport *transport;
git_remote_callbacks *remote_callbacks;
git_remote_autotag_option_t remote_autotag;
const char* checkout_branch;
} git_clone_options;
#define GIT_CLONE_OPTIONS_VERSION 1

32
src/clone.c
View File

@ -260,6 +260,31 @@ cleanup:
return retcode;
}
static int update_head_to_branch(
git_repository *repo,
const git_clone_options *options)
{
int retcode;
git_buf remote_branch_name = GIT_BUF_INIT;
git_reference* remote_ref = NULL;
assert(options->checkout_branch);
if ((retcode = git_buf_printf(&remote_branch_name, GIT_REFS_REMOTES_DIR "%s/%s",
options->remote_name, options->checkout_branch)) < 0 )
goto cleanup;
if ((retcode = git_reference_lookup(&remote_ref, repo, git_buf_cstr(&remote_branch_name))) < 0)
goto cleanup;
retcode = update_head_to_new_branch(repo, git_reference_target(remote_ref),
options->checkout_branch);
cleanup:
git_reference_free(remote_ref);
return retcode;
}
/*
* submodules?
*/
@ -331,8 +356,13 @@ static int setup_remotes_and_fetch(
options->fetch_progress_payload)) {
/* Create "origin/foo" branches for all remote branches */
if (!git_remote_update_tips(origin)) {
/* Point HEAD to the requested branch */
if (options->checkout_branch) {
if (!update_head_to_branch(repo, options))
retcode = 0;
}
/* Point HEAD to the same ref as the remote's head */
if (!update_head_to_remote(repo, origin)) {
else if (!update_head_to_remote(repo, origin)) {
retcode = 0;
}
}