format-patch: refactor output selection

The --stdout and --output-directory options are mutually exclusive, but
it's hard to tell from reading the code. We have three separate
conditionals that check for use_stdout, and it's only after we've set up
the output_directory fully that we check whether the user also specified
--stdout.

Instead, let's check the exclusion explicitly first, then have a single
conditional that handles stdout versus an output directory. This is
slightly easier to follow now, and also will keep things sane when we
add another output mode in a future patch.

We'll add a few tests as well, covering the mutual exclusion and the
fact that we are not confused by a configured output directory.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jeff King 2020-11-04 14:28:31 -05:00 committed by Junio C Hamano
parent 898f80736c
commit 4c6f781f9c
2 changed files with 22 additions and 9 deletions

View File

@ -1942,20 +1942,20 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
if (rev.show_notes)
load_display_notes(&rev.notes_opt);
if (!output_directory && !use_stdout)
output_directory = config_output_directory;
if (use_stdout + !!output_directory > 1)
die(_("--stdout and --output-directory are mutually exclusive"));
if (!use_stdout)
output_directory = set_outdir(prefix, output_directory);
else
if (use_stdout) {
setup_pager();
if (output_directory) {
} else {
int saved;
if (!output_directory)
output_directory = config_output_directory;
output_directory = set_outdir(prefix, output_directory);
if (rev.diffopt.use_color != GIT_COLOR_ALWAYS)
rev.diffopt.use_color = GIT_COLOR_NEVER;
if (use_stdout)
die(_("standard output, or directory, which one?"));
/*
* We consider <outdir> as 'outside of gitdir', therefore avoid
* applying adjust_shared_perm in s-c-l-d.

View File

@ -1919,6 +1919,19 @@ test_expect_success 'format-patch -o overrides format.outputDirectory' '
test_path_is_dir patchset
'
test_expect_success 'format-patch forbids multiple outputs' '
rm -fr outdir &&
test_must_fail \
git format-patch --stdout --output-directory=outdir
'
test_expect_success 'configured outdir does not conflict with output options' '
rm -fr outdir &&
test_config format.outputDirectory outdir &&
git format-patch --stdout &&
test_path_is_missing outdir
'
test_expect_success 'format-patch --base' '
git checkout patchid &&