Teach Git the 'graph' builtin that will be used for writing and
reading packed graph files. The current implementation is mostly
empty, except for a check that the core.graph setting is enabled
and a '--pack-dir' option.
Signed-off-by: Derrick Stolee <dsto...@microsoft.com>
---
Documentation/git-graph.txt | 7 +++++++
Makefile | 1 +
builtin.h | 1 +
builtin/graph.c | 36 ++++++++++++++++++++++++++++++++++++
command-list.txt | 1 +
git.c | 1 +
6 files changed, 47 insertions(+)
create mode 100644 Documentation/git-graph.txt
create mode 100644 builtin/graph.c
diff --git a/Documentation/git-graph.txt b/Documentation/git-graph.txt
new file mode 100644
index 0000000000..de5a3c07e6
--- /dev/null
+++ b/Documentation/git-graph.txt
@@ -0,0 +1,7 @@
+git-graph(1)
+============
+
+NAME
+----
+git-graph - Write and verify Git commit graphs (.graph files)
+
diff --git a/Makefile b/Makefile
index 1a9b23b679..d8b0d0457a 100644
--- a/Makefile
+++ b/Makefile
@@ -965,6 +965,7 @@ BUILTIN_OBJS += builtin/for-each-ref.o
BUILTIN_OBJS += builtin/fsck.o
BUILTIN_OBJS += builtin/gc.o
BUILTIN_OBJS += builtin/get-tar-commit-id.o
+BUILTIN_OBJS += builtin/graph.o
BUILTIN_OBJS += builtin/grep.o
BUILTIN_OBJS += builtin/hash-object.o
BUILTIN_OBJS += builtin/help.o
diff --git a/builtin.h b/builtin.h
index 42378f3aa4..ae7e816908 100644
--- a/builtin.h
+++ b/builtin.h
@@ -168,6 +168,7 @@ extern int cmd_format_patch(int argc, const char **argv,
const char *prefix);
extern int cmd_fsck(int argc, const char **argv, const char *prefix);
extern int cmd_gc(int argc, const char **argv, const char *prefix);
extern int cmd_get_tar_commit_id(int argc, const char **argv, const char
*prefix);
+extern int cmd_graph(int argc, const char **argv, const char *prefix);
extern int cmd_grep(int argc, const char **argv, const char *prefix);
extern int cmd_hash_object(int argc, const char **argv, const char *prefix);
extern int cmd_help(int argc, const char **argv, const char *prefix);
diff --git a/builtin/graph.c b/builtin/graph.c
new file mode 100644
index 0000000000..a902dc8646
--- /dev/null
+++ b/builtin/graph.c
@@ -0,0 +1,36 @@
+#include "builtin.h"
+#include "cache.h"
+#include "config.h"
+#include "dir.h"
+#include "git-compat-util.h"
+#include "lockfile.h"
+#include "packfile.h"
+#include "parse-options.h"
+
+static char const * const builtin_graph_usage[] ={
+ N_("git graph [--pack-dir <packdir>]"),
+ NULL
+};
+
+static struct opts_graph {
+ const char *pack_dir;
+} opts;
+
+int cmd_graph(int argc, const char **argv, const char *prefix)
+{
+ static struct option builtin_graph_options[] = {
+ { OPTION_STRING, 'p', "pack-dir", &opts.pack_dir,
+ N_("dir"),
+ N_("The pack directory to store the graph") },
+ OPT_END(),
+ };
+
+ if (!core_graph)
+ die("core.graph is false");
+
+ if (argc == 2 && !strcmp(argv[1], "-h"))
+ usage_with_options(builtin_graph_usage, builtin_graph_options);
+
+ return 0;
+}
+
diff --git a/command-list.txt b/command-list.txt
index a1fad28fd8..d9c17cb9f8 100644
--- a/command-list.txt
+++ b/command-list.txt
@@ -61,6 +61,7 @@ git-format-patch mainporcelain
git-fsck ancillaryinterrogators
git-gc mainporcelain
git-get-tar-commit-id ancillaryinterrogators
+git-graph plumbingmanipulators
git-grep mainporcelain info
git-gui mainporcelain
git-hash-object plumbingmanipulators
diff --git a/git.c b/git.c
index c870b9719c..29f8b6e7dd 100644
--- a/git.c
+++ b/git.c
@@ -408,6 +408,7 @@ static struct cmd_struct commands[] = {
{ "fsck-objects", cmd_fsck, RUN_SETUP },
{ "gc", cmd_gc, RUN_SETUP },
{ "get-tar-commit-id", cmd_get_tar_commit_id },
+ { "graph", cmd_graph, RUN_SETUP_GENTLY },
{ "grep", cmd_grep, RUN_SETUP_GENTLY },
{ "hash-object", cmd_hash_object },
{ "help", cmd_help },
--
2.16.0
