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Merge branch 'jk/grep-no-index-fix'

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The code to parse the command line "git grep <patterns>... <rev>
[[--] <pathspec>...]" has been cleaned up, and a handful of bugs
have been fixed (e.g. we used to check "--" if it is a rev).

* jk/grep-no-index-fix:
  grep: treat revs the same for --untracked as for --no-index
  grep: do not diagnose misspelt revs with --no-index
  grep: avoid resolving revision names in --no-index case
  grep: fix "--" rev/pathspec disambiguation
  grep: re-order rev-parsing loop
  grep: do not unnecessarily query repo for "--"
  grep: move thread initialization a little lower
This commit is contained in:
Junio C Hamano 2017-02-27 13:57:15 -08:00
commit 036465a248
2 changed files with 121 additions and 27 deletions
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80
builtin/grep.c
View file

@ -967,6 +967,7 @@ int cmd_grep(int argc, const char **argv, const char *prefix)
int dummy;
int use_index = 1;
int pattern_type_arg = GREP_PATTERN_TYPE_UNSPECIFIED;
int allow_revs;
struct option options[] = {
OPT_BOOL(0, "cached", &cached,
@ -1149,26 +1150,69 @@ int cmd_grep(int argc, const char **argv, const char *prefix)
compile_grep_patterns(&opt);
/* Check revs and then paths */
/*
* We have to find "--" in a separate pass, because its presence
* influences how we will parse arguments that come before it.
*/
for (i = 0; i < argc; i++) {
if (!strcmp(argv[i], "--")) {
seen_dashdash = 1;
break;
}
}
/*
* Resolve any rev arguments. If we have a dashdash, then everything up
* to it must resolve as a rev. If not, then we stop at the first
* non-rev and assume everything else is a path.
*/
allow_revs = use_index && !untracked;
for (i = 0; i < argc; i++) {
const char *arg = argv[i];
unsigned char sha1[20];
struct object_context oc;
/* Is it a rev? */
if (!get_sha1_with_context(arg, 0, sha1, &oc)) {
struct object *object = parse_object_or_die(sha1, arg);
struct object *object;
if (!strcmp(arg, "--")) {
i++;
break;
}
if (!allow_revs) {
if (seen_dashdash)
die(_("--no-index or --untracked cannot be used with revs"));
break;
}
if (get_sha1_with_context(arg, 0, sha1, &oc)) {
if (seen_dashdash)
die(_("unable to resolve revision: %s"), arg);
break;
}
object = parse_object_or_die(sha1, arg);
if (!seen_dashdash)
verify_non_filename(prefix, arg);
add_object_array_with_path(object, arg, &list, oc.mode, oc.path);
continue;
}
if (!strcmp(arg, "--")) {
i++;
seen_dashdash = 1;
}
break;
/*
* Anything left over is presumed to be a path. But in the non-dashdash
* "do what I mean" case, we verify and complain when that isn't true.
*/
if (!seen_dashdash) {
int j;
for (j = i; j < argc; j++)
verify_filename(prefix, argv[j], j == i && allow_revs);
}
parse_pathspec(&pathspec, 0,
PATHSPEC_PREFER_CWD |
(opt.max_depth != -1 ? PATHSPEC_MAXDEPTH_VALID : 0),
prefix, argv + i);
pathspec.max_depth = opt.max_depth;
pathspec.recursive = 1;
#ifndef NO_PTHREADS
if (list.nr || cached || show_in_pager)
num_threads = 0;
@ -1190,20 +1234,6 @@ int cmd_grep(int argc, const char **argv, const char *prefix)
}
#endif
/* The rest are paths */
if (!seen_dashdash) {
int j;
for (j = i; j < argc; j++)
verify_filename(prefix, argv[j], j == i);
}
parse_pathspec(&pathspec, 0,
PATHSPEC_PREFER_CWD |
(opt.max_depth != -1 ? PATHSPEC_MAXDEPTH_VALID : 0),
prefix, argv + i);
pathspec.max_depth = opt.max_depth;
pathspec.recursive = 1;
if (recurse_submodules) {
gitmodules_config();
compile_submodule_options(&opt, &pathspec, cached, untracked,
@ -1245,8 +1275,6 @@ int cmd_grep(int argc, const char **argv, const char *prefix)
if (!use_index || untracked) {
int use_exclude = (opt_exclude < 0) ? use_index : !!opt_exclude;
if (list.nr)
die(_("--no-index or --untracked cannot be used with revs."));
hit = grep_directory(&opt, &pathspec, use_exclude, use_index);
} else if (0 <= opt_exclude) {
die(_("--[no-]exclude-standard cannot be used for tracked contents."));

66
t/t7810-grep.sh
View file

@ -982,6 +982,72 @@ test_expect_success 'grep -e -- -- path' '
test_cmp expected actual
'
test_expect_success 'dashdash disambiguates rev as rev' '
test_when_finished "rm -f master" &&
echo content >master &&
echo master:hello.c >expect &&
git grep -l o master -- hello.c >actual &&
test_cmp expect actual
'
test_expect_success 'dashdash disambiguates pathspec as pathspec' '
test_when_finished "git rm -f master" &&
echo content >master &&
git add master &&
echo master:content >expect &&
git grep o -- master >actual &&
test_cmp expect actual
'
test_expect_success 'report bogus arg without dashdash' '
test_must_fail git grep o does-not-exist
'
test_expect_success 'report bogus rev with dashdash' '
test_must_fail git grep o hello.c --
'
test_expect_success 'allow non-existent path with dashdash' '
# We need a real match so grep exits with success.
tree=$(git ls-tree HEAD |
sed s/hello.c/not-in-working-tree/ |
git mktree) &&
git grep o "$tree" -- not-in-working-tree
'
test_expect_success 'grep --no-index pattern -- path' '
rm -fr non &&
mkdir -p non/git &&
(
GIT_CEILING_DIRECTORIES="$(pwd)/non" &&
export GIT_CEILING_DIRECTORIES &&
cd non/git &&
echo hello >hello &&
echo goodbye >goodbye &&
echo hello:hello >expect &&
git grep --no-index o -- hello >actual &&
test_cmp expect actual
)
'
test_expect_success 'grep --no-index complains of revs' '
test_must_fail git grep --no-index o master -- 2>err &&
test_i18ngrep "cannot be used with revs" err
'
test_expect_success 'grep --no-index prefers paths to revs' '
test_when_finished "rm -f master" &&
echo content >master &&
echo master:content >expect &&
git grep --no-index o master >actual &&
test_cmp expect actual
'
test_expect_success 'grep --no-index does not "diagnose" revs' '
test_must_fail git grep --no-index o :1:hello.c 2>err &&
test_i18ngrep ! -i "did you mean" err
'
cat >expected <<EOF
hello.c:int main(int argc, const char **argv)
hello.c: printf("Hello world.\n");