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refs: new public ref function: safe_create_reflog

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The safe_create_reflog function creates a reflog, if it does not
already exist.

The log_ref_setup function becomes private and gains a force_create
parameter to force the creation of a reflog even if log_all_ref_updates
is false or the refname is not one of the special refnames.

The new parameter also reduces the need to store, modify, and restore
the log_all_ref_updates global before reflog creation.

In a moment, we will use this to add reflog creation commands to
git-reflog.

Signed-off-by: David Turner <dturner@twopensource.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
David Turner
2015-07-21 17:04:52 -04:00
committed by Junio C Hamano
parent 4e2bef57c9
commit abd0cd3a30
3 changed files with 26 additions and 14 deletions
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14
builtin/checkout.c
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@ -619,24 +619,20 @@ static void update_refs_for_switch(const struct checkout_opts *opts,
if (opts->new_branch) {
if (opts->new_orphan_branch) {
if (opts->new_branch_log && !log_all_ref_updates) {
int temp;
struct strbuf log_file = STRBUF_INIT;
int ret;
const char *ref_name;
char *refname;
struct strbuf err = STRBUF_INIT;
ref_name = mkpath("refs/heads/%s", opts->new_orphan_branch);
temp = log_all_ref_updates;
log_all_ref_updates = 1;
ret = log_ref_setup(ref_name, &log_file, &err);
log_all_ref_updates = temp;
strbuf_release(&log_file);
refname = mkpathdup("refs/heads/%s", opts->new_orphan_branch);
ret = safe_create_reflog(refname, 1, &err);
free(refname);
if (ret) {
fprintf(stderr, _("Can not do reflog for '%s': %s\n"),
opts->new_orphan_branch, err.buf);
strbuf_release(&err);
return;
}
strbuf_release(&err);
}
}
else