[PATCH 05/17] pack-objects: support narrow packs with pathspecs

[Nguyễn Thái Ngọc Duy <pclouds@xxxxxxxxx>]

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@xxxxxxxxx>
---
 Documentation/git-pack-objects.txt |    2 +-
 builtin/pack-objects.c             |   18 ++++++++++++++++--
 t/t6000-rev-list-misc.sh           |    9 +++++++++
 3 files changed, 26 insertions(+), 3 deletions(-)

diff --git a/Documentation/git-pack-objects.txt b/Documentation/git-pack-objects.txt
index 8ed09c0..cad8c06 100644
--- a/Documentation/git-pack-objects.txt
+++ b/Documentation/git-pack-objects.txt
@@ -13,7 +13,7 @@ SYNOPSIS
 	[--no-reuse-delta] [--delta-base-offset] [--non-empty]
 	[--local] [--incremental] [--window=N] [--depth=N]
 	[--revs [--unpacked | --all]*] [--stdout | base-name]
-	[--keep-true-parents] < object-list
+	[--keep-true-parents] [ -- path... ] < object-list
 
 
 DESCRIPTION
diff --git a/builtin/pack-objects.c b/builtin/pack-objects.c
index 789f6bf..26044b8 100644
--- a/builtin/pack-objects.c
+++ b/builtin/pack-objects.c
@@ -30,8 +30,8 @@ static const char pack_usage[] =
   "        [--no-reuse-delta] [--no-reuse-object] [--delta-base-offset]\n"
   "        [--threads=N] [--non-empty] [--revs [--unpacked | --all]*]\n"
   "        [--reflog] [--stdout | base-name] [--include-tag]\n"
-  "        [--keep-unreachable | --unpack-unreachable \n"
-  "        [<ref-list | <object-list]";
+  "        [--keep-unreachable | --unpack-unreachable]\n"
+  "        [ -- path ... ] [<ref-list | <object-list]";
 
 struct object_entry {
 	struct pack_idx_entry idx;
@@ -2278,6 +2278,11 @@ int cmd_pack_objects(int argc, const char **argv, const char *prefix)
 			grafts_replace_parents = 0;
 			continue;
 		}
+		if (!strcmp(arg, "--")) {
+			if (!pack_to_stdout)
+				die("either --stdout of pack basename must be specified");
+			break;
+		}
 		usage(pack_usage);
 	}
 
@@ -2300,6 +2305,15 @@ int cmd_pack_objects(int argc, const char **argv, const char *prefix)
 	if (pack_to_stdout != !base_name)
 		usage(pack_usage);
 
+	if (!argv[i] || !strcmp(argv[i], "--")) {
+		if (rp_ac+(argc-i)+1 >= rp_ac_alloc) {
+			rp_ac_alloc = rp_ac + (argc-i) + 1;
+			rp_av = xrealloc(rp_av, rp_ac_alloc * sizeof(*rp_av));
+		}
+		memcpy(rp_av+rp_ac, argv+i, sizeof(*argv)*(argc-i));
+		rp_ac += argc-i;
+	}
+
 	if (!pack_to_stdout && !pack_size_limit)
 		pack_size_limit = pack_size_limit_cfg;
 	if (pack_to_stdout && pack_size_limit)
diff --git a/t/t6000-rev-list-misc.sh b/t/t6000-rev-list-misc.sh
index b6a7c9c..0386313 100755
--- a/t/t6000-rev-list-misc.sh
+++ b/t/t6000-rev-list-misc.sh
@@ -31,6 +31,15 @@ test_expect_success 'rev-list --objects with pathspecs and deeper paths' '
 	! grep unwanted_file output
 '
 
+test_expect_success 'pack-objects with pathspecs' '
+	echo HEAD|git pack-objects --revs --stdout -- foo > output.pack &&
+	git index-pack --stdin -o output.idx < output.pack &&
+	git verify-pack -v output.pack >output &&
+	grep "^e69de29bb2d1d6434b8b29ae775ad8c2e48c5391 blob" output &&
+	test "$(grep blob output|wc -l)" = 1 &&
+	test "$(grep tree output|wc -l)" = 2
+'
+
 test_expect_success 'rev-list --objects with pathspecs and copied files' '
 	git checkout --orphan junio-testcase &&
 	git rm -rf . &&
-- 
1.7.1.rc1.69.g24c2f7

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