#include "unpack-trees.h"
#include "hook.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)
+static int update_refs(const struct reset_head_opts *opts,
+ const struct object_id *oid,
+ const struct object_id *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;
+ unsigned detach_head = opts->flags & RESET_HEAD_DETACH;
+ unsigned run_hook = opts->flags & RESET_HEAD_RUN_POST_CHECKOUT_HOOK;
+ unsigned update_orig_head = opts->flags & RESET_ORIG_HEAD;
+ const struct object_id *orig_head = opts->orig_head;
+ const char *switch_to_branch = opts->branch;
+ const char *reflog_branch = opts->branch_msg;
+ const char *reflog_head = opts->head_msg;
+ const char *reflog_orig_head = opts->orig_head_msg;
+ const char *default_reflog_action = opts->default_reflog_action;
+ struct object_id *old_orig = NULL, oid_old_orig;
+ struct strbuf msg = STRBUF_INIT;
+ const char *reflog_action;
+ size_t prefix_len;
+ int ret;
+
+ if ((update_orig_head && !reflog_orig_head) || !reflog_head) {
+ if (!default_reflog_action)
+ BUG("default_reflog_action must be given when reflog messages are omitted");
+ 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 (head) {
+ if (!reflog_orig_head) {
+ strbuf_addstr(&msg, "updating ORIG_HEAD");
+ reflog_orig_head = msg.buf;
+ }
+ update_ref(reflog_orig_head, "ORIG_HEAD",
+ orig_head ? orig_head : head,
+ 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, head,
+ detach_head ? REF_NO_DEREF : 0,
+ UPDATE_REFS_MSG_ON_ERR);
+ else {
+ ret = update_ref(reflog_branch ? reflog_branch : 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 (!ret && run_hook)
+ run_hooks_l("post-checkout",
+ oid_to_hex(head ? head : null_oid()),
+ oid_to_hex(oid), "1", NULL);
+ strbuf_release(&msg);
+ return ret;
+}
+
+int reset_head(struct repository *r, const struct reset_head_opts *opts)
+{
+ const struct object_id *oid = opts->oid;
+ const char *switch_to_branch = opts->branch;
+ unsigned reset_hard = opts->flags & RESET_HEAD_HARD;
+ unsigned refs_only = opts->flags & RESET_HEAD_REFS_ONLY;
+ unsigned update_orig_head = opts->flags & RESET_ORIG_HEAD;
+ struct object_id *head = NULL, head_oid;
struct tree_desc desc[2] = { { NULL }, { NULL } };
struct lock_file lock = LOCK_INIT;
struct unpack_trees_options unpack_tree_opts = { 0 };
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;
+ const char *action;
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 (opts->orig_head_msg && !update_orig_head)
+ BUG("ORIG_HEAD reflog message given without updating ORIG_HEAD");
+
+ if (opts->branch_msg && !opts->branch)
+ BUG("branch reflog message given without a 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)) {
+ if (!get_oid("HEAD", &head_oid)) {
+ head = &head_oid;
+ } else if (!oid || !reset_hard) {
ret = error(_("could not determine HEAD revision"));
goto leave_reset_head;
}
oid = &head_oid;
if (refs_only)
- goto reset_head_refs;
+ return update_refs(opts, oid, head);
+ action = reset_hard ? "reset" : "checkout";
setup_unpack_trees_porcelain(&unpack_tree_opts, action);
unpack_tree_opts.head_idx = 1;
unpack_tree_opts.src_index = r->index;
unpack_tree_opts.merge = 1;
unpack_tree_opts.preserve_ignored = 0; /* FIXME: !overwrite_ignore */
init_checkout_metadata(&unpack_tree_opts.meta, switch_to_branch, oid, NULL);
- if (!detach_head)
+ if (reset_hard)
unpack_tree_opts.reset = UNPACK_RESET_PROTECT_UNTRACKED;
if (repo_read_index_unmerged(r) < 0) {
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_hooks_l("post-checkout",
- oid_to_hex(orig ? orig : null_oid()),
- oid_to_hex(oid), "1", NULL);
+ if (oid != &head_oid || update_orig_head || switch_to_branch)
+ ret = update_refs(opts, oid, head);
leave_reset_head:
- strbuf_release(&msg);
rollback_lock_file(&lock);
clear_unpack_trees_porcelain(&unpack_tree_opts);
while (nr)
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