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builtin/apply.c: report error on failure to recognize input

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When git apply is passed something that is not a patch, it does not produce
an error message or exit with a non-zero status if it was not actually
"applying" the patch i.e. --check or --numstat etc were supplied on the
command line.

Fix this by producing an error when apply fails to find any hunks whatsoever
while parsing the patch.

This will cause some of the output formats (--numstat, --diffstat, etc) to
produce an error when they formerly would have reported zero changes and
exited successfully.  That seems like the correct behavior though.  Failure
to recognize the input as a patch should be an error.

Plus, add a test.

Reported-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: Brandon Casey <drafnel@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Brandon Casey 2011-12-03 14:35:50 -06:00 committed by Junio C Hamano
parent 590a472b36
commit cc64b318f2
2 changed files with 24 additions and 5 deletions
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10
builtin/apply.c
View file

@ -3590,15 +3590,12 @@ static int write_out_one_reject(struct patch *patch)
return -1;
}
static int write_out_results(struct patch *list, int skipped_patch)
static int write_out_results(struct patch *list)
{
int phase;
int errs = 0;
struct patch *l;
if (!list && !skipped_patch)
return error("No changes");
for (phase = 0; phase < 2; phase++) {
l = list;
while (l) {
@ -3724,6 +3721,9 @@ static int apply_patch(int fd, const char *filename, int options)
offset += nr;
}
if (!list && !skipped_patch)
die("unrecognized input");
if (whitespace_error && (ws_error_action == die_on_ws_error))
apply = 0;
@ -3741,7 +3741,7 @@ static int apply_patch(int fd, const char *filename, int options)
!apply_with_reject)
exit(1);
if (apply && write_out_results(list, skipped_patch))
if (apply && write_out_results(list))
exit(1);
if (fake_ancestor)

19
t/t4136-apply-check.sh Executable file
View file

@ -0,0 +1,19 @@
#!/bin/sh
test_description='git apply should exit non-zero with unrecognized input.'
. ./test-lib.sh
test_expect_success 'setup' '
test_commit 1
'
test_expect_success 'apply --check exits non-zero with unrecognized input' '
test_must_fail git apply --check - <<-\EOF
I am not a patch
I look nothing like a patch
git apply must fail
EOF
'
test_done