Begin the process of lib-ifying the autostash code. In a future commit,
This patch is best viewed with `--color-moved` and
`--color-moved-ws=allow-indentation-change`.
this will be used to implement `--autostash` in other builtins.
Signed-off-by: Denton Liu <liu.denton@xxxxxxxxx>
---
autostash.c | 137 +++++++++++++++++++++++++++++++++++++++++++++++
autostash.h | 12 +++++
builtin/rebase.c | 137 -----------------------------------------------
3 files changed, 149 insertions(+), 137 deletions(-)
diff --git a/autostash.c b/autostash.c
index 62ec7a7c80..eb58e0c8a4 100644
--- a/autostash.c
+++ b/autostash.c
@@ -1,9 +1,17 @@
+#define USE_THE_INDEX_COMPATIBILITY_MACROS
+
#include "git-compat-util.h"
#include "autostash.h"
+#include "cache-tree.h"
#include "dir.h"
#include "gettext.h"
+#include "lockfile.h"
+#include "refs.h"
#include "run-command.h"
#include "strbuf.h"
+#include "tree-walk.h"
+#include "tree.h"
+#include "unpack-trees.h"
int read_one(const char *path, struct strbuf *buf)
{
@@ -13,6 +21,135 @@ int read_one(const char *path, struct strbuf *buf)
return 0;
}
+int reset_head(struct object_id *oid, const char *action,
+ const char *switch_to_branch, unsigned flags,
+ const char *reflog_orig_head, const char *reflog_head)
+{
+ unsigned detach_head = flags & RESET_HEAD_DETACH;
+ unsigned reset_hard = flags & RESET_HEAD_HARD;
+ unsigned run_hook = flags & RESET_HEAD_RUN_POST_CHECKOUT_HOOK;
+ unsigned refs_only = flags & RESET_HEAD_REFS_ONLY;
+ unsigned update_orig_head = flags & RESET_ORIG_HEAD;
+ struct object_id head_oid;
+ struct tree_desc desc[2] = { { NULL }, { NULL } };
+ struct lock_file lock = LOCK_INIT;
+ struct unpack_trees_options unpack_tree_opts;
+ struct tree *tree;
+ const char *reflog_action;
+ struct strbuf msg = STRBUF_INIT;
+ size_t prefix_len;
+ struct object_id *orig = NULL, oid_orig,
+ *old_orig = NULL, oid_old_orig;
+ int ret = 0, nr = 0;
+
+ if (switch_to_branch && !starts_with(switch_to_branch, "refs/"))
+ BUG("Not a fully qualified branch: '%s'", switch_to_branch);
+
+ if (!refs_only && hold_locked_index(&lock, LOCK_REPORT_ON_ERROR) < 0) {
+ ret = -1;
+ goto leave_reset_head;
+ }
+
+ if ((!oid || !reset_hard) && get_oid("HEAD", &head_oid)) {
+ ret = error(_("could not determine HEAD revision"));
+ goto leave_reset_head;
+ }
+
+ if (!oid)
+ oid = &head_oid;
+
+ if (refs_only)
+ goto reset_head_refs;
+
+ memset(&unpack_tree_opts, 0, sizeof(unpack_tree_opts));
+ setup_unpack_trees_porcelain(&unpack_tree_opts, action);
+ unpack_tree_opts.head_idx = 1;
+ unpack_tree_opts.src_index = the_repository->index;
+ unpack_tree_opts.dst_index = the_repository->index;
+ unpack_tree_opts.fn = reset_hard ? oneway_merge : twoway_merge;
+ unpack_tree_opts.update = 1;
+ unpack_tree_opts.merge = 1;
+ if (!detach_head)
+ unpack_tree_opts.reset = 1;
+
+ if (repo_read_index_unmerged(the_repository) < 0) {
+ ret = error(_("could not read index"));
+ goto leave_reset_head;
+ }
+
+ if (!reset_hard && !fill_tree_descriptor(the_repository, &desc[nr++], &head_oid)) {
+ ret = error(_("failed to find tree of %s"),
+ oid_to_hex(&head_oid));
+ goto leave_reset_head;
+ }
+
+ if (!fill_tree_descriptor(the_repository, &desc[nr++], oid)) {
+ ret = error(_("failed to find tree of %s"), oid_to_hex(oid));
+ goto leave_reset_head;
+ }
+
+ if (unpack_trees(nr, desc, &unpack_tree_opts)) {
+ ret = -1;
+ goto leave_reset_head;
+ }
+
+ tree = parse_tree_indirect(oid);
+ prime_cache_tree(the_repository, the_repository->index, tree);
+
+ if (write_locked_index(the_repository->index, &lock, COMMIT_LOCK) < 0) {
+ ret = error(_("could not write index"));
+ goto leave_reset_head;
+ }
+
+reset_head_refs:
+ reflog_action = getenv(GIT_REFLOG_ACTION_ENVIRONMENT);
+ strbuf_addf(&msg, "%s: ", reflog_action ? reflog_action : "rebase");
+ prefix_len = msg.len;
+
+ if (update_orig_head) {
+ if (!get_oid("ORIG_HEAD", &oid_old_orig))
+ old_orig = &oid_old_orig;
+ if (!get_oid("HEAD", &oid_orig)) {
+ orig = &oid_orig;
+ if (!reflog_orig_head) {
+ strbuf_addstr(&msg, "updating ORIG_HEAD");
+ reflog_orig_head = msg.buf;
+ }
+ update_ref(reflog_orig_head, "ORIG_HEAD", orig,
+ old_orig, 0, UPDATE_REFS_MSG_ON_ERR);
+ } else if (old_orig)
+ delete_ref(NULL, "ORIG_HEAD", old_orig, 0);
+ }
+
+ if (!reflog_head) {
+ strbuf_setlen(&msg, prefix_len);
+ strbuf_addstr(&msg, "updating HEAD");
+ reflog_head = msg.buf;
+ }
+ if (!switch_to_branch)
+ ret = update_ref(reflog_head, "HEAD", oid, orig,
+ detach_head ? REF_NO_DEREF : 0,
+ UPDATE_REFS_MSG_ON_ERR);
+ else {
+ ret = update_ref(reflog_head, switch_to_branch, oid,
+ NULL, 0, UPDATE_REFS_MSG_ON_ERR);
+ if (!ret)
+ ret = create_symref("HEAD", switch_to_branch,
+ reflog_head);
+ }
+ if (run_hook)
+ run_hook_le(NULL, "post-checkout",
+ oid_to_hex(orig ? orig : &null_oid),
+ oid_to_hex(oid), "1", NULL);
+
+leave_reset_head:
+ strbuf_release(&msg);
+ rollback_lock_file(&lock);
+ while (nr)
+ free((void *)desc[--nr].buffer);
+ return ret;
+}
+
int apply_autostash(const char *path)
{
struct strbuf autostash = STRBUF_INIT;
diff --git a/autostash.h b/autostash.h
index 5f4e4bd22c..1406638166 100644
--- a/autostash.h
+++ b/autostash.h
@@ -6,6 +6,18 @@
/* Read one file, then strip line endings */
int read_one(const char *path, struct strbuf *buf);
+#define GIT_REFLOG_ACTION_ENVIRONMENT "GIT_REFLOG_ACTION"
+
+#define RESET_HEAD_DETACH (1<<0)
+#define RESET_HEAD_HARD (1<<1)
+#define RESET_HEAD_RUN_POST_CHECKOUT_HOOK (1<<2)
+#define RESET_HEAD_REFS_ONLY (1<<3)
+#define RESET_ORIG_HEAD (1<<4)
+
+int reset_head(struct object_id *oid, const char *action,
+ const char *switch_to_branch, unsigned flags,
+ const char *reflog_orig_head, const char *reflog_head);
+
int apply_autostash(const char *path);
#endif
diff --git a/builtin/rebase.c b/builtin/rebase.c
index 661928d427..c3165896cc 100644
--- a/builtin/rebase.c
+++ b/builtin/rebase.c
@@ -734,143 +734,6 @@ static void add_var(struct strbuf *buf, const char *name, const char *value)
}
}
-#define GIT_REFLOG_ACTION_ENVIRONMENT "GIT_REFLOG_ACTION"
-
-#define RESET_HEAD_DETACH (1<<0)
-#define RESET_HEAD_HARD (1<<1)
-#define RESET_HEAD_RUN_POST_CHECKOUT_HOOK (1<<2)
-#define RESET_HEAD_REFS_ONLY (1<<3)
-#define RESET_ORIG_HEAD (1<<4)
-
-static int reset_head(struct object_id *oid, const char *action,
- const char *switch_to_branch, unsigned flags,
- const char *reflog_orig_head, const char *reflog_head)
-{
- unsigned detach_head = flags & RESET_HEAD_DETACH;
- unsigned reset_hard = flags & RESET_HEAD_HARD;
- unsigned run_hook = flags & RESET_HEAD_RUN_POST_CHECKOUT_HOOK;
- unsigned refs_only = flags & RESET_HEAD_REFS_ONLY;
- unsigned update_orig_head = flags & RESET_ORIG_HEAD;
- struct object_id head_oid;
- struct tree_desc desc[2] = { { NULL }, { NULL } };
- struct lock_file lock = LOCK_INIT;
- struct unpack_trees_options unpack_tree_opts;
- struct tree *tree;
- const char *reflog_action;
- struct strbuf msg = STRBUF_INIT;
- size_t prefix_len;
- struct object_id *orig = NULL, oid_orig,
- *old_orig = NULL, oid_old_orig;
- int ret = 0, nr = 0;
-
- if (switch_to_branch && !starts_with(switch_to_branch, "refs/"))
- BUG("Not a fully qualified branch: '%s'", switch_to_branch);
-
- if (!refs_only && hold_locked_index(&lock, LOCK_REPORT_ON_ERROR) < 0) {
- ret = -1;
- goto leave_reset_head;
- }
-
- if ((!oid || !reset_hard) && get_oid("HEAD", &head_oid)) {
- ret = error(_("could not determine HEAD revision"));
- goto leave_reset_head;
- }
-
- if (!oid)
- oid = &head_oid;
-
- if (refs_only)
- goto reset_head_refs;
-
- memset(&unpack_tree_opts, 0, sizeof(unpack_tree_opts));
- setup_unpack_trees_porcelain(&unpack_tree_opts, action);
- unpack_tree_opts.head_idx = 1;
- unpack_tree_opts.src_index = the_repository->index;
- unpack_tree_opts.dst_index = the_repository->index;
- unpack_tree_opts.fn = reset_hard ? oneway_merge : twoway_merge;
- unpack_tree_opts.update = 1;
- unpack_tree_opts.merge = 1;
- if (!detach_head)
- unpack_tree_opts.reset = 1;
-
- if (repo_read_index_unmerged(the_repository) < 0) {
- ret = error(_("could not read index"));
- goto leave_reset_head;
- }
-
- if (!reset_hard && !fill_tree_descriptor(the_repository, &desc[nr++], &head_oid)) {
- ret = error(_("failed to find tree of %s"),
- oid_to_hex(&head_oid));
- goto leave_reset_head;
- }
-
- if (!fill_tree_descriptor(the_repository, &desc[nr++], oid)) {
- ret = error(_("failed to find tree of %s"), oid_to_hex(oid));
- goto leave_reset_head;
- }
-
- if (unpack_trees(nr, desc, &unpack_tree_opts)) {
- ret = -1;
- goto leave_reset_head;
- }
-
- tree = parse_tree_indirect(oid);
- prime_cache_tree(the_repository, the_repository->index, tree);
-
- if (write_locked_index(the_repository->index, &lock, COMMIT_LOCK) < 0) {
- ret = error(_("could not write index"));
- goto leave_reset_head;
- }
-
-reset_head_refs:
- reflog_action = getenv(GIT_REFLOG_ACTION_ENVIRONMENT);
- strbuf_addf(&msg, "%s: ", reflog_action ? reflog_action : "rebase");
- prefix_len = msg.len;
-
- if (update_orig_head) {
- if (!get_oid("ORIG_HEAD", &oid_old_orig))
- old_orig = &oid_old_orig;
- if (!get_oid("HEAD", &oid_orig)) {
- orig = &oid_orig;
- if (!reflog_orig_head) {
- strbuf_addstr(&msg, "updating ORIG_HEAD");
- reflog_orig_head = msg.buf;
- }
- update_ref(reflog_orig_head, "ORIG_HEAD", orig,
- old_orig, 0, UPDATE_REFS_MSG_ON_ERR);
- } else if (old_orig)
- delete_ref(NULL, "ORIG_HEAD", old_orig, 0);
- }
-
- if (!reflog_head) {
- strbuf_setlen(&msg, prefix_len);
- strbuf_addstr(&msg, "updating HEAD");
- reflog_head = msg.buf;
- }
- if (!switch_to_branch)
- ret = update_ref(reflog_head, "HEAD", oid, orig,
- detach_head ? REF_NO_DEREF : 0,
- UPDATE_REFS_MSG_ON_ERR);
- else {
- ret = update_ref(reflog_head, switch_to_branch, oid,
- NULL, 0, UPDATE_REFS_MSG_ON_ERR);
- if (!ret)
- ret = create_symref("HEAD", switch_to_branch,
- reflog_head);
- }
- if (run_hook)
- run_hook_le(NULL, "post-checkout",
- oid_to_hex(orig ? orig : &null_oid),
- oid_to_hex(oid), "1", NULL);
-
-leave_reset_head:
- strbuf_release(&msg);
- rollback_lock_file(&lock);
- while (nr)
- free((void *)desc[--nr].buffer);
- return ret;
-}
-
static int move_to_original_branch(struct rebase_options *opts)
{
struct strbuf orig_head_reflog = STRBUF_INIT, head_reflog = STRBUF_INIT;
--
2.23.0.897.g0a19638b1e
