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revert: actually check for a dirty index 

The previous code mistakenly used wt_status_prepare to check whether the
index had anything commitable in it; however, that function is just an
init function, and will never report a dirty index.

The correct way with wt_status_* would be to call wt_status_print with the
output pointing to /dev/null or similar. However, that does extra work by
both examining the working tree and spewing status information to nowhere.

Instead, let's just implement the useful subset of wt_status_print as an
"is_index_dirty" function.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jeff King 2008-03-03 01:30:56 -05:00 committed by Junio C Hamano
parent 90d0ed96b7
commit 0f2d4476c1
2 changed files with 25 additions and 4 deletions
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20
builtin-revert.c
View File

@ -8,6 +8,8 @@
#include "exec_cmd.h"
#include "utf8.h"
#include "parse-options.h"
#include "diff.h"
#include "revision.h"
/*
* This implements the builtins revert and cherry-pick.
@ -245,6 +247,17 @@ static char *help_msg(const unsigned char *sha1)
return helpbuf;
}
static int index_is_dirty(void)
{
struct rev_info rev;
init_revisions(&rev, NULL);
setup_revisions(0, NULL, &rev, "HEAD");
DIFF_OPT_SET(&rev.diffopt, QUIET);
DIFF_OPT_SET(&rev.diffopt, EXIT_WITH_STATUS);
run_diff_index(&rev, 1);
return !!DIFF_OPT_TST(&rev.diffopt, HAS_CHANGES);
}
static int revert_or_cherry_pick(int argc, const char **argv)
{
unsigned char head[20];
@ -273,12 +286,11 @@ static int revert_or_cherry_pick(int argc, const char **argv)
if (write_tree(head, 0, NULL))
die ("Your index file is unmerged.");
} else {
struct wt_status s;
if (get_sha1("HEAD", head))
die ("You do not have a valid HEAD");
wt_status_prepare(&s);
if (s.commitable)
if (read_cache() < 0)
die("could not read the index");
if (index_is_dirty())
die ("Dirty index: cannot %s", me);
discard_cache();
}

9
t/t3501-revert-cherry-pick.sh
View File

@ -59,4 +59,13 @@ test_expect_success 'revert after renaming branch' '
'
test_expect_success 'revert forbidden on dirty working tree' '
echo content >extra_file &&
git add extra_file &&
test_must_fail git revert HEAD 2>errors &&
grep "Dirty index" errors
'
test_done