diff options
Diffstat (limited to 'builtin/fetch.c')
| -rw-r--r-- | builtin/fetch.c | 61 |
1 files changed, 55 insertions, 6 deletions
diff --git a/builtin/fetch.c b/builtin/fetch.c index f5eb2cf338..872ad49834 100644 --- a/builtin/fetch.c +++ b/builtin/fetch.c @@ -1579,10 +1579,47 @@ static const char *strip_refshead(const char *name){ return name; } -static int set_head(const struct ref *remote_refs) +static void set_head_advice_msg(const char *remote, const char *head_name) { - int result = 0, is_bare; - struct strbuf b_head = STRBUF_INIT, b_remote_head = STRBUF_INIT; + const char message_advice_set_head[] = + N_("Run 'git remote set-head %s %s' to follow the change, or set\n" + "'remote.%s.followRemoteHEAD' configuration option to a different value\n" + "if you do not want to see this message. Specifically running\n" + "'git config set remote.%s.followRemoteHEAD %s' will disable the warning\n" + "until the remote changes HEAD to something else."); + + advise_if_enabled(ADVICE_FETCH_SET_HEAD_WARN, _(message_advice_set_head), + remote, head_name, remote, remote, head_name); +} + +static void report_set_head(const char *remote, const char *head_name, + struct strbuf *buf_prev, int updateres) { + struct strbuf buf_prefix = STRBUF_INIT; + const char *prev_head = NULL; + + strbuf_addf(&buf_prefix, "refs/remotes/%s/", remote); + skip_prefix(buf_prev->buf, buf_prefix.buf, &prev_head); + + if (prev_head && strcmp(prev_head, head_name)) { + printf("'HEAD' at '%s' is '%s', but we have '%s' locally.\n", + remote, head_name, prev_head); + set_head_advice_msg(remote, head_name); + } + else if (updateres && buf_prev->len) { + printf("'HEAD' at '%s' is '%s', " + "but we have a detached HEAD pointing to '%s' locally.\n", + remote, head_name, buf_prev->buf); + set_head_advice_msg(remote, head_name); + } + strbuf_release(&buf_prefix); +} + +static int set_head(const struct ref *remote_refs, int follow_remote_head, + const char *no_warn_branch) +{ + int result = 0, create_only, is_bare, was_detached; + struct strbuf b_head = STRBUF_INIT, b_remote_head = STRBUF_INIT, + b_local_head = STRBUF_INIT; const char *remote = gtransport->remote->name; char *head_name = NULL; struct ref *ref, *matches; @@ -1603,6 +1640,8 @@ static int set_head(const struct ref *remote_refs) string_list_append(&heads, strip_refshead(ref->name)); } + if (follow_remote_head == FOLLOW_REMOTE_NEVER) + goto cleanup; if (!heads.nr) result = 1; @@ -1614,6 +1653,7 @@ static int set_head(const struct ref *remote_refs) if (!head_name) goto cleanup; is_bare = is_bare_repository(); + create_only = follow_remote_head == FOLLOW_REMOTE_ALWAYS ? 0 : !is_bare; if (is_bare) { strbuf_addstr(&b_head, "HEAD"); strbuf_addf(&b_remote_head, "refs/heads/%s", head_name); @@ -1626,9 +1666,16 @@ static int set_head(const struct ref *remote_refs) result = 1; goto cleanup; } - if (refs_update_symref_extended(refs, b_head.buf, b_remote_head.buf, - "fetch", NULL, !is_bare)) + was_detached = refs_update_symref_extended(refs, b_head.buf, b_remote_head.buf, + "fetch", &b_local_head, create_only); + if (was_detached == -1) { result = 1; + goto cleanup; + } + if (verbosity >= 0 && + follow_remote_head == FOLLOW_REMOTE_WARN && + (!no_warn_branch || strcmp(no_warn_branch, head_name))) + report_set_head(remote, head_name, &b_local_head, was_detached); cleanup: free(head_name); @@ -1636,6 +1683,7 @@ cleanup: free_refs(matches); string_list_clear(&heads, 0); strbuf_release(&b_head); + strbuf_release(&b_local_head); strbuf_release(&b_remote_head); return result; } @@ -1873,7 +1921,8 @@ static int do_fetch(struct transport *transport, "you need to specify exactly one branch with the --set-upstream option")); } } - if (set_head(remote_refs)) + if (set_head(remote_refs, transport->remote->follow_remote_head, + transport->remote->no_warn_branch)) ; /* * Way too many cases where this can go wrong |