Allow easier parsing by cat-file by giving rev-list an option to print
only the OID of a non-commit object without any additional information.
This is a short-term shim; later on, rev-list should be taught how to
print the types of objects it finds in a format similar to cat-file's.
Before this commit, the output from rev-list needed to be massaged
before being piped to cat-file, like so:
git rev-list --objects HEAD | cut -f 1 -d ' ' |
git cat-file --batch-check
This was especially unexpected when dealing with root trees, as an
invisible whitespace exists at the end of the OID:
git rev-list --objects --filter=tree:1 --max-count=1 HEAD |
xargs -I% echo "AA%AA"
Now, it can be piped directly, as in the added test case:
git rev-list --objects --no-object-names HEAD | git cat-file --batch-check
Signed-off-by: Emily Shaffer <emilyshaffer@xxxxxxxxxx>
Change-Id: I489bdf0a8215532e540175188883ff7541d70e1b
---
Since v4, added the new options to `git help rev-list`.
Documentation/git-rev-list.txt | 1 +
Documentation/rev-list-options.txt | 10 ++++++++++
builtin/rev-list.c | 19 ++++++++++++++++++-
t/t6000-rev-list-misc.sh | 20 ++++++++++++++++++++
4 files changed, 49 insertions(+), 1 deletion(-)
diff --git a/Documentation/git-rev-list.txt b/Documentation/git-rev-list.txt
index 88609ff435..9392760b25 100644
--- a/Documentation/git-rev-list.txt
+++ b/Documentation/git-rev-list.txt
@@ -48,6 +48,7 @@ SYNOPSIS
[ --date=<format>]
[ [ --objects | --objects-edge | --objects-edge-aggressive ]
[ --unpacked ]
+ [ --object-names | --no-object-names ]
[ --filter=<filter-spec> [ --filter-print-omitted ] ] ]
[ --missing=<missing-action> ]
[ --pretty | --header ]
diff --git a/Documentation/rev-list-options.txt b/Documentation/rev-list-options.txt
index 71a1fcc093..286fc163f1 100644
--- a/Documentation/rev-list-options.txt
+++ b/Documentation/rev-list-options.txt
@@ -708,6 +708,16 @@ ifdef::git-rev-list[]
Only useful with `--objects`; print the object IDs that are not
in packs.
+--object-names::
+ Only useful with `--objects`; print the names of the object IDs
+ that are found. This is the default behavior.
+
+--no-object-names::
+ Only useful with `--objects`; does not print the names of the object
+ IDs that are found. This inverts `--object-names`. This flag allows
+ the output to be more easily parsed by commands such as
+ linkgit:git-cat-file[1].
+
--filter=<filter-spec>::
Only useful with one of the `--objects*`; omits objects (usually
blobs) from the list of printed objects. The '<filter-spec>'
diff --git a/builtin/rev-list.c b/builtin/rev-list.c
index 660172b014..301ccb970b 100644
--- a/builtin/rev-list.c
+++ b/builtin/rev-list.c
@@ -49,6 +49,7 @@ static const char rev_list_usage[] =
" --objects | --objects-edge\n"
" --unpacked\n"
" --header | --pretty\n"
+" --[no-]object-names\n"
" --abbrev=<n> | --no-abbrev\n"
" --abbrev-commit\n"
" --left-right\n"
@@ -75,6 +76,9 @@ enum missing_action {
};
static enum missing_action arg_missing_action;
+/* display only the oid of each object encountered */
+static int arg_show_object_names = 1;
+
#define DEFAULT_OIDSET_SIZE (16*1024)
static void finish_commit(struct commit *commit);
@@ -255,7 +259,10 @@ static void show_object(struct object *obj, const char *name, void *cb_data)
display_progress(progress, ++progress_counter);
if (info->flags & REV_LIST_QUIET)
return;
- show_object_with_name(stdout, obj, name);
+ if (arg_show_object_names)
+ show_object_with_name(stdout, obj, name);
+ else
+ printf("%s\n", oid_to_hex(&obj->oid));
}
static void show_edge(struct commit *commit)
@@ -484,6 +491,16 @@ int cmd_rev_list(int argc, const char **argv, const char *prefix)
if (skip_prefix(arg, "--missing=", &arg))
continue; /* already handled above */
+ if (!strcmp(arg, ("--no-object-names"))) {
+ arg_show_object_names = 0;
+ continue;
+ }
+
+ if (!strcmp(arg, ("--object-names"))) {
+ arg_show_object_names = 1;
+ continue;
+ }
+
usage(rev_list_usage);
}
diff --git a/t/t6000-rev-list-misc.sh b/t/t6000-rev-list-misc.sh
index 0507999729..52a9e38d66 100755
--- a/t/t6000-rev-list-misc.sh
+++ b/t/t6000-rev-list-misc.sh
@@ -48,6 +48,26 @@ test_expect_success 'rev-list --objects with pathspecs and copied files' '
! grep one output
'
+test_expect_success 'rev-list --objects --no-object-names has no space/names' '
+ git rev-list --objects --no-object-names HEAD >output &&
+ ! grep wanted_file output &&
+ ! grep unwanted_file output &&
+ ! grep " " output
+'
+
+test_expect_success 'rev-list --objects --no-object-names works with cat-file' '
+ git rev-list --objects --no-object-names --all >list-output &&
+ git cat-file --batch-check <list-output >cat-output &&
+ ! grep missing cat-output
+'
+
+test_expect_success '--no-object-names and --object-names are last-one-wins' '
+ git rev-list --objects --no-object-names --object-names --all >output &&
+ grep wanted_file output &&
+ git rev-list --objects --object-names --no-object-names --all >output &&
+ ! grep wanted_file output
+'
+
test_expect_success 'rev-list A..B and rev-list ^A B are the same' '
git commit --allow-empty -m another &&
git tag -a -m "annotated" v1.0 &&
--
2.22.0.410.gd8fdbe21b5-goog
