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branch: report invalid tracking branch as gone

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Command "git branch -vv" will report tracking branches, but invalid
tracking branches are also reported. This is because the function
stat_tracking_info() can not distinguish invalid tracking branch
from other cases which it would not like to report, such as
there is no upstream settings at all, or nothing is changed between
one branch and its upstream.

Junio suggested missing upstream should be reported [1] like:

    $ git branch -v -v
      master    e67ac84 initial
    * topic     3fc0f2a [topicbase: gone] topic

    $ git status
    # On branch topic
    # Your branch is based on 'topicbase', but the upstream is gone.
    #   (use "git branch --unset-upstream" to fixup)
    ...

    $ git status -b -s
    ## topic...topicbase [gone]
    ...

In order to do like that, we need to distinguish these three cases
(i.e. no tracking, with configured but no longer valid tracking, and
with tracking) in function stat_tracking_info(). So the refactored
function stat_tracking_info() has three return values: -1 (with "gone"
base), 0 (no base), and 1 (with base).

If the caller does not like to report tracking info when nothing
changed between the branch and its upstream, simply checks if
num_theirs and num_ours are both 0.

[1]: http://thread.gmane.org/gmane.comp.version-control.git/231830/focus=232288

Suggested-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Jiang Xin <worldhello.net@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jiang Xin
2013-08-26 15:02:48 +08:00
committed by Junio C Hamano
parent 425df881e0
commit f2e087395b
4 changed files with 142 additions and 48 deletions
Download Patch File Download Diff File Expand all files Collapse all files

36
builtin/branch.c
View File

@ -423,19 +423,19 @@ static void fill_tracking_info(struct strbuf *stat, const char *branch_name,
char *ref = NULL;
struct branch *branch = branch_get(branch_name);
struct strbuf fancy = STRBUF_INIT;
int upstream_is_gone = 0;
if (!stat_tracking_info(branch, &ours, &theirs)) {
if (branch && branch->merge && branch->merge[0]->dst &&
show_upstream_ref) {
ref = shorten_unambiguous_ref(branch->merge[0]->dst, 0);
if (want_color(branch_use_color))
strbuf_addf(stat, "[%s%s%s] ",
branch_get_color(BRANCH_COLOR_UPSTREAM),
ref, branch_get_color(BRANCH_COLOR_RESET));
else
strbuf_addf(stat, "[%s] ", ref);
}
switch (stat_tracking_info(branch, &ours, &theirs)) {
case 0:
/* no base */
return;
case -1:
/* with "gone" base */
upstream_is_gone = 1;
break;
default:
/* with base */
break;
}
if (show_upstream_ref) {
@ -448,19 +448,25 @@ static void fill_tracking_info(struct strbuf *stat, const char *branch_name,
strbuf_addstr(&fancy, ref);
}
if (!ours) {
if (ref)
if (upstream_is_gone) {
if (show_upstream_ref)
strbuf_addf(stat, _("[%s: gone]"), fancy.buf);
} else if (!ours && !theirs) {
if (show_upstream_ref)
strbuf_addf(stat, _("[%s]"), fancy.buf);
} else if (!ours) {
if (show_upstream_ref)
strbuf_addf(stat, _("[%s: behind %d]"), fancy.buf, theirs);
else
strbuf_addf(stat, _("[behind %d]"), theirs);
} else if (!theirs) {
if (ref)
if (show_upstream_ref)
strbuf_addf(stat, _("[%s: ahead %d]"), fancy.buf, ours);
else
strbuf_addf(stat, _("[ahead %d]"), ours);
} else {
if (ref)
if (show_upstream_ref)
strbuf_addf(stat, _("[%s: ahead %d, behind %d]"),
fancy.buf, ours, theirs);
else