For the purpose of rewriting git-pull.sh into a C builtin, implement a
skeletal builtin/pull.c that redirects to $GIT_EXEC_PATH/git-pull.sh if
the environment variable _GIT_USE_BUILTIN_PULL is not defined. This
allows us to fall back on the functional git-pull.sh when running the
test suite for tests that depend on a working git-pull implementation.
This redirection should be removed when all the features of git-pull.sh
have been re-implemented in builtin/pull.c.
Helped-by: Junio C Hamano <gits...@pobox.com>
Signed-off-by: Paul Tan <pyoka...@gmail.com>
---
Makefile | 1 +
builtin.h | 1 +
builtin/pull.c | 33 +++++++++++++++++++++++++++++++++
git.c | 1 +
4 files changed, 36 insertions(+)
create mode 100644 builtin/pull.c
diff --git a/Makefile b/Makefile
index 54ec511..2057a9d 100644
--- a/Makefile
+++ b/Makefile
@@ -877,6 +877,7 @@ BUILTIN_OBJS += builtin/pack-refs.o
BUILTIN_OBJS += builtin/patch-id.o
BUILTIN_OBJS += builtin/prune-packed.o
BUILTIN_OBJS += builtin/prune.o
+BUILTIN_OBJS += builtin/pull.o
BUILTIN_OBJS += builtin/push.o
BUILTIN_OBJS += builtin/read-tree.o
BUILTIN_OBJS += builtin/receive-pack.o
diff --git a/builtin.h b/builtin.h
index b87df70..ea3c834 100644
--- a/builtin.h
+++ b/builtin.h
@@ -98,6 +98,7 @@ extern int cmd_pack_redundant(int argc, const char **argv,
const char *prefix);
extern int cmd_patch_id(int argc, const char **argv, const char *prefix);
extern int cmd_prune(int argc, const char **argv, const char *prefix);
extern int cmd_prune_packed(int argc, const char **argv, const char *prefix);
+extern int cmd_pull(int argc, const char **argv, const char *prefix);
extern int cmd_push(int argc, const char **argv, const char *prefix);
extern int cmd_read_tree(int argc, const char **argv, const char *prefix);
extern int cmd_receive_pack(int argc, const char **argv, const char *prefix);
diff --git a/builtin/pull.c b/builtin/pull.c
new file mode 100644
index 0000000..f8b79a2
--- /dev/null
+++ b/builtin/pull.c
@@ -0,0 +1,33 @@
+/*
+ * Builtin "git pull"
+ *
+ * Based on git-pull.sh by Junio C Hamano
+ *
+ * Fetch one or more remote refs and merge it/them into the current HEAD.
+ */
+#include "cache.h"
+#include "builtin.h"
+#include "parse-options.h"
+#include "exec_cmd.h"
+
+static const char * const pull_usage[] = {
+ NULL
+};
+
+static struct option pull_options[] = {
+ OPT_END()
+};
+
+int cmd_pull(int argc, const char **argv, const char *prefix)
+{
+ if (!getenv("_GIT_USE_BUILTIN_PULL")) {
+ const char *path = mkpath("%s/git-pull", git_exec_path());
+
+ if (sane_execvp(path, (char**) argv) < 0)
+ die_errno("could not exec %s", path);
+ }
+
+ argc = parse_options(argc, argv, prefix, pull_options, pull_usage, 0);
+
+ return 0;
+}
diff --git a/git.c b/git.c
index 44374b1..e7a7713 100644
--- a/git.c
+++ b/git.c
@@ -445,6 +445,7 @@ static struct cmd_struct commands[] = {
{ "pickaxe", cmd_blame, RUN_SETUP },
{ "prune", cmd_prune, RUN_SETUP },
{ "prune-packed", cmd_prune_packed, RUN_SETUP },
+ { "pull", cmd_pull, RUN_SETUP | NEED_WORK_TREE },
{ "push", cmd_push, RUN_SETUP },
{ "read-tree", cmd_read_tree, RUN_SETUP },
{ "receive-pack", cmd_receive_pack },
--
2.1.4
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