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reflog.c
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492 lines (408 loc) · 13.5 KB
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#define USE_THE_REPOSITORY_VARIABLE
#include "builtin.h"
#include "config.h"
#include "gettext.h"
#include "hex.h"
#include "odb.h"
#include "revision.h"
#include "reachable.h"
#include "wildmatch.h"
#include "worktree.h"
#include "reflog.h"
#include "refs.h"
#include "parse-options.h"
#define BUILTIN_REFLOG_SHOW_USAGE \
N_("git reflog [show] [<log-options>] [<ref>]")
#define BUILTIN_REFLOG_LIST_USAGE \
N_("git reflog list")
#define BUILTIN_REFLOG_EXISTS_USAGE \
N_("git reflog exists <ref>")
#define BUILTIN_REFLOG_WRITE_USAGE \
N_("git reflog write <ref> <old-oid> <new-oid> <message>")
#define BUILTIN_REFLOG_DELETE_USAGE \
N_("git reflog delete [--rewrite] [--updateref]\n" \
" [--dry-run | -n] [--verbose] <ref>@{<specifier>}...")
#define BUILTIN_REFLOG_DROP_USAGE \
N_("git reflog drop [--all [--single-worktree] | <refs>...]")
#define BUILTIN_REFLOG_EXPIRE_USAGE \
N_("git reflog expire [--expire=<time>] [--expire-unreachable=<time>]\n" \
" [--rewrite] [--updateref] [--stale-fix]\n" \
" [--dry-run | -n] [--verbose] [--all [--single-worktree] | <refs>...]")
static const char *const reflog_show_usage[] = {
BUILTIN_REFLOG_SHOW_USAGE,
NULL,
};
static const char *const reflog_list_usage[] = {
BUILTIN_REFLOG_LIST_USAGE,
NULL,
};
static const char *const reflog_exists_usage[] = {
BUILTIN_REFLOG_EXISTS_USAGE,
NULL,
};
static const char *const reflog_write_usage[] = {
BUILTIN_REFLOG_WRITE_USAGE,
NULL,
};
static const char *const reflog_delete_usage[] = {
BUILTIN_REFLOG_DELETE_USAGE,
NULL
};
static const char *const reflog_drop_usage[] = {
BUILTIN_REFLOG_DROP_USAGE,
NULL,
};
static const char *const reflog_expire_usage[] = {
BUILTIN_REFLOG_EXPIRE_USAGE,
NULL
};
static const char *const reflog_usage[] = {
BUILTIN_REFLOG_SHOW_USAGE,
BUILTIN_REFLOG_LIST_USAGE,
BUILTIN_REFLOG_EXISTS_USAGE,
BUILTIN_REFLOG_WRITE_USAGE,
BUILTIN_REFLOG_DELETE_USAGE,
BUILTIN_REFLOG_DROP_USAGE,
BUILTIN_REFLOG_EXPIRE_USAGE,
NULL
};
struct worktree_reflogs {
struct worktree *worktree;
struct string_list reflogs;
};
static int collect_reflog(const char *ref, void *cb_data)
{
struct worktree_reflogs *cb = cb_data;
struct worktree *worktree = cb->worktree;
struct strbuf newref = STRBUF_INIT;
/*
* Avoid collecting the same shared ref multiple times because
* they are available via all worktrees.
*/
if (!worktree->is_current &&
parse_worktree_ref(ref, NULL, NULL, NULL) == REF_WORKTREE_SHARED)
return 0;
strbuf_worktree_ref(worktree, &newref, ref);
string_list_append_nodup(&cb->reflogs, strbuf_detach(&newref, NULL));
return 0;
}
static int expire_unreachable_callback(const struct option *opt,
const char *arg,
int unset)
{
struct reflog_expire_options *opts = opt->value;
BUG_ON_OPT_NEG(unset);
if (parse_expiry_date(arg, &opts->expire_unreachable))
die(_("invalid timestamp '%s' given to '--%s'"),
arg, opt->long_name);
opts->explicit_expiry |= REFLOG_EXPIRE_UNREACH;
return 0;
}
static int expire_total_callback(const struct option *opt,
const char *arg,
int unset)
{
struct reflog_expire_options *opts = opt->value;
BUG_ON_OPT_NEG(unset);
if (parse_expiry_date(arg, &opts->expire_total))
die(_("invalid timestamp '%s' given to '--%s'"),
arg, opt->long_name);
opts->explicit_expiry |= REFLOG_EXPIRE_TOTAL;
return 0;
}
static int cmd_reflog_show(int argc, const char **argv, const char *prefix,
struct repository *repo UNUSED)
{
struct option options[] = {
OPT_END()
};
parse_options(argc, argv, prefix, options, reflog_show_usage,
PARSE_OPT_KEEP_DASHDASH | PARSE_OPT_KEEP_ARGV0 |
PARSE_OPT_KEEP_UNKNOWN_OPT);
return cmd_log_reflog(argc, argv, prefix, the_repository);
}
static int show_reflog(const char *refname, void *cb_data UNUSED)
{
printf("%s\n", refname);
return 0;
}
static int cmd_reflog_list(int argc, const char **argv, const char *prefix,
struct repository *repo UNUSED)
{
struct option options[] = {
OPT_END()
};
struct ref_store *ref_store;
argc = parse_options(argc, argv, prefix, options, reflog_list_usage, 0);
if (argc)
return error(_("%s does not accept arguments: '%s'"),
"list", argv[0]);
ref_store = get_main_ref_store(the_repository);
return refs_for_each_reflog(ref_store, show_reflog, NULL);
}
static int cmd_reflog_expire(int argc, const char **argv, const char *prefix,
struct repository *repo UNUSED)
{
timestamp_t now = time(NULL);
struct reflog_expire_options opts = REFLOG_EXPIRE_OPTIONS_INIT(now);
int i, status, do_all, single_worktree = 0;
unsigned int flags = 0;
int verbose = 0;
reflog_expiry_should_prune_fn *should_prune_fn = should_expire_reflog_ent;
const struct option options[] = {
OPT_BIT('n', "dry-run", &flags, N_("do not actually prune any entries"),
EXPIRE_REFLOGS_DRY_RUN),
OPT_BIT(0, "rewrite", &flags,
N_("rewrite the old SHA1 with the new SHA1 of the entry that now precedes it"),
EXPIRE_REFLOGS_REWRITE),
OPT_BIT(0, "updateref", &flags,
N_("update the reference to the value of the top reflog entry"),
EXPIRE_REFLOGS_UPDATE_REF),
OPT_BOOL(0, "verbose", &verbose, N_("print extra information on screen")),
OPT_CALLBACK_F(0, "expire", &opts, N_("timestamp"),
N_("prune entries older than the specified time"),
PARSE_OPT_NONEG,
expire_total_callback),
OPT_CALLBACK_F(0, "expire-unreachable", &opts, N_("timestamp"),
N_("prune entries older than <time> that are not reachable from the current tip of the branch"),
PARSE_OPT_NONEG,
expire_unreachable_callback),
OPT_BOOL(0, "stale-fix", &opts.stalefix,
N_("prune any reflog entries that point to broken commits")),
OPT_BOOL(0, "all", &do_all, N_("process the reflogs of all references")),
OPT_BOOL(0, "single-worktree", &single_worktree,
N_("limits processing to reflogs from the current worktree only")),
OPT_END()
};
repo_config(the_repository, reflog_expire_config, &opts);
save_commit_buffer = 0;
do_all = status = 0;
argc = parse_options(argc, argv, prefix, options, reflog_expire_usage, 0);
if (verbose)
should_prune_fn = should_expire_reflog_ent_verbose;
/*
* We can trust the commits and objects reachable from refs
* even in older repository. We cannot trust what's reachable
* from reflog if the repository was pruned with older git.
*/
if (opts.stalefix) {
struct rev_info revs;
repo_init_revisions(the_repository, &revs, prefix);
revs.do_not_die_on_missing_objects = 1;
revs.ignore_missing = 1;
revs.ignore_missing_links = 1;
if (verbose)
printf(_("Marking reachable objects..."));
mark_reachable_objects(&revs, 0, 0, NULL);
release_revisions(&revs);
if (verbose)
putchar('\n');
}
if (do_all) {
struct worktree_reflogs collected = {
.reflogs = STRING_LIST_INIT_DUP,
};
struct string_list_item *item;
struct worktree **worktrees, **p;
worktrees = get_worktrees();
for (p = worktrees; *p; p++) {
if (single_worktree && !(*p)->is_current)
continue;
collected.worktree = *p;
refs_for_each_reflog(get_worktree_ref_store(*p),
collect_reflog, &collected);
}
free_worktrees(worktrees);
for_each_string_list_item(item, &collected.reflogs) {
struct expire_reflog_policy_cb cb = {
.opts = opts,
.dry_run = !!(flags & EXPIRE_REFLOGS_DRY_RUN),
};
reflog_expire_options_set_refname(&cb.opts, item->string);
status |= refs_reflog_expire(get_main_ref_store(the_repository),
8000
item->string, flags,
reflog_expiry_prepare,
should_prune_fn,
reflog_expiry_cleanup,
&cb);
}
string_list_clear(&collected.reflogs, 0);
}
for (i = 0; i < argc; i++) {
char *ref;
struct expire_reflog_policy_cb cb = { .opts = opts };
if (!repo_dwim_log(the_repository, argv[i], strlen(argv[i]), NULL, &ref)) {
status |= error(_("reflog could not be found: '%s'"), argv[i]);
continue;
}
reflog_expire_options_set_refname(&cb.opts, ref);
status |= refs_reflog_expire(get_main_ref_store(the_repository),
ref, flags,
reflog_expiry_prepare,
should_prune_fn,
reflog_expiry_cleanup,
&cb);
free(ref);
}
reflog_clear_expire_config(&opts);
return status;
}
static int cmd_reflog_delete(int argc, const char **argv, const char *prefix,
struct repository *repo UNUSED)
{
int i, status = 0;
unsigned int flags = 0;
int verbose = 0;
const struct option options[] = {
OPT_BIT('n', "dry-run", &flags, N_("do not actually prune any entries"),
EXPIRE_REFLOGS_DRY_RUN),
OPT_BIT(0, "rewrite", &flags,
N_("rewrite the old SHA1 with the new SHA1 of the entry that now precedes it"),
EXPIRE_REFLOGS_REWRITE),
OPT_BIT(0, "updateref", &flags,
N_("update the reference to the value of the top reflog entry"),
EXPIRE_REFLOGS_UPDATE_REF),
OPT_BOOL(0, "verbose", &verbose, N_("print extra information on screen")),
OPT_END()
};
argc = parse_options(argc, argv, prefix, options, reflog_delete_usage, 0);
if (argc < 1)
return error(_("no reflog specified to delete"));
for (i = 0; i < argc; i++)
status |= reflog_delete(argv[i], flags, verbose);
return status;
}
static int cmd_reflog_exists(int argc, const char **argv, const char *prefix,
struct repository *repo UNUSED)
{
struct option options[] = {
OPT_END()
};
const char *refname;
argc = parse_options(argc, argv, prefix, options, reflog_exists_usage,
0);
if (!argc)
usage_with_options(reflog_exists_usage, options);
refname = argv[0];
if (check_refname_format(refname, REFNAME_ALLOW_ONELEVEL))
die(_("invalid ref format: %s"), refname);
return !refs_reflog_exists(get_main_ref_store(the_repository),
refname);
}
static int cmd_reflog_drop(int argc, const char **argv, const char *prefix,
struct repository *repo)
{
int ret = 0, do_all = 0, single_worktree = 0;
const struct option options[] = {
OPT_BOOL(0, "all", &do_all, N_("drop the reflogs of all references")),
OPT_BOOL(0, "single-worktree", &single_worktree,
N_("drop reflogs from the current worktree only")),
OPT_END()
};
argc = parse_options(argc, argv, prefix, options, reflog_drop_usage, 0);
if (argc && do_all)
usage(_("references specified along with --all"));
if (do_all) {
struct worktree_reflogs collected = {
.reflogs = STRING_LIST_INIT_DUP,
};
struct string_list_item *item;
struct worktree **worktrees, **p;
worktrees = get_worktrees();
for (p = worktrees; *p; p++) {
if (single_worktree && !(*p)->is_current)
continue;
collected.worktree = *p;
refs_for_each_reflog(get_worktree_ref_store(*p),
collect_reflog, &collected);
}
free_worktrees(worktrees);
for_each_string_list_item(item, &collected.reflogs)
ret |= refs_delete_reflog(get_main_ref_store(repo),
item->string);
string_list_clear(&collected.reflogs, 0);
return ret;
}
for (int i = 0; i < argc; i++) {
char *ref;
if (!repo_dwim_log(repo, argv[i], strlen(argv[i]), NULL, &ref)) {
ret |= error(_("reflog could not be found: '%s'"), argv[i]);
continue;
}
ret |= refs_delete_reflog(get_main_ref_store(repo), ref);
free(ref);
}
return ret;
}
static int cmd_reflog_write(int argc, const char **argv, const char *prefix,
struct repository *repo)
{
const struct option options[] = {
OPT_END()
};
struct object_id old_oid, new_oid;
struct strbuf err = STRBUF_INIT;
struct ref_transaction *tx;
const char *ref, *message;
int ret;
repo_config(repo, git_ident_config, NULL);
argc = parse_options(argc, argv, prefix, options, reflog_write_usage, 0);
if (argc != 4)
usage_with_options(reflog_write_usage, options);
ref = argv[0];
if (!is_root_ref(ref) && check_refname_format(ref, 0))
die(_("invalid reference name: %s"), ref);
ret = get_oid_hex_algop(argv[1], &old_oid, repo->hash_algo);
if (ret)
die(_("invalid old object ID: '%s'"), argv[1]);
if (!is_null_oid(&old_oid) && !odb_has_object(repo->objects, &old_oid, 0))
die(_("old object '%s' does not exist"), argv[1]);
ret = get_oid_hex_algop(argv[2], &new_oid, repo->hash_algo);
if (ret)
die(_("invalid new object ID: '%s'"), argv[2]);
if (!is_null_oid(&new_oid) && !odb_has_object(repo->objects, &new_oid, 0))
die(_("new object '%s' does not exist"), argv[2]);
message = argv[3];
tx = ref_store_transaction_begin(get_main_ref_store(repo), 0, &err);
if (!tx)
die(_("cannot start transaction: %s"), err.buf);
ret = ref_transaction_update_reflog(tx, ref, &new_oid, &old_oid,
git_committer_info(0),
message, 0, &err);
if (ret)
die(_("cannot queue reflog update: %s"), err.buf);
ret = ref_transaction_commit(tx, &err);
if (ret)
die(_("cannot commit reflog update: %s"), err.buf);
ref_transaction_free(tx);
strbuf_release(&err);
return 0;
}
/*
* main "reflog"
*/
int cmd_reflog(int argc,
const char **argv,
const char *prefix,
struct repository *repository)
{
parse_opt_subcommand_fn *fn = NULL;
struct option options[] = {
OPT_SUBCOMMAND("show", &fn, cmd_reflog_show),
OPT_SUBCOMMAND("list", &fn, cmd_reflog_list),
OPT_SUBCOMMAND("exists", &fn, cmd_reflog_exists),
OPT_SUBCOMMAND("write", &fn, cmd_reflog_write),
OPT_SUBCOMMAND("delete", &fn, cmd_reflog_delete),
OPT_SUBCOMMAND("drop", &fn, cmd_reflog_drop),
OPT_SUBCOMMAND("expire", &fn, cmd_reflog_expire),
OPT_END()
};
argc = parse_options(argc, argv, prefix, options, reflog_usage,
PARSE_OPT_SUBCOMMAND_OPTIONAL |
PARSE_OPT_KEEP_DASHDASH | PARSE_OPT_KEEP_ARGV0 |
PARSE_OPT_KEEP_UNKNOWN_OPT);
if (fn)
return fn(argc - 1, argv + 1, prefix, repository);
else
return cmd_log_reflog(argc, argv, prefix, repository);
}