mirror of
https://github.com/git/git.git
synced 2024-10-29 21:37:53 +01:00
bf10200871
"git merge" learns the "--autostash" option. * dl/merge-autostash: (22 commits) pull: pass --autostash to merge t5520: make test_pull_autostash() accept expect_parent_num merge: teach --autostash option sequencer: implement apply_autostash_oid() sequencer: implement save_autostash() sequencer: unlink autostash in apply_autostash() sequencer: extract perform_autostash() from rebase rebase: generify create_autostash() rebase: extract create_autostash() reset: extract reset_head() from rebase rebase: generify reset_head() rebase: use apply_autostash() from sequencer.c sequencer: rename stash_sha1 to stash_oid sequencer: make apply_autostash() accept a path rebase: use read_oneliner() sequencer: make read_oneliner() extern sequencer: configurably warn on non-existent files sequencer: make read_oneliner() accept flags sequencer: make file exists check more efficient sequencer: stop leaking buf ...
141 lines
4 KiB
C
141 lines
4 KiB
C
#include "git-compat-util.h"
|
|
#include "cache-tree.h"
|
|
#include "lockfile.h"
|
|
#include "refs.h"
|
|
#include "reset.h"
|
|
#include "run-command.h"
|
|
#include "tree-walk.h"
|
|
#include "tree.h"
|
|
#include "unpack-trees.h"
|
|
|
|
int reset_head(struct repository *r, struct object_id *oid, const char *action,
|
|
const char *switch_to_branch, unsigned flags,
|
|
const char *reflog_orig_head, const char *reflog_head,
|
|
const char *default_reflog_action)
|
|
{
|
|
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 && repo_hold_locked_index(r, &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 = r->index;
|
|
unpack_tree_opts.dst_index = r->index;
|
|
unpack_tree_opts.fn = reset_hard ? oneway_merge : twoway_merge;
|
|
unpack_tree_opts.update = 1;
|
|
unpack_tree_opts.merge = 1;
|
|
init_checkout_metadata(&unpack_tree_opts.meta, switch_to_branch, oid, NULL);
|
|
if (!detach_head)
|
|
unpack_tree_opts.reset = 1;
|
|
|
|
if (repo_read_index_unmerged(r) < 0) {
|
|
ret = error(_("could not read index"));
|
|
goto leave_reset_head;
|
|
}
|
|
|
|
if (!reset_hard && !fill_tree_descriptor(r, &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(r, &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(r, r->index, tree);
|
|
|
|
if (write_locked_index(r->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 : default_reflog_action);
|
|
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;
|
|
|
|
}
|