зеркало из https://github.com/microsoft/git.git
202 строки
4.9 KiB
C
202 строки
4.9 KiB
C
#include "cache.h"
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#include "commit.h"
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#include "diff.h"
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#include "revision.h"
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#include "builtin.h"
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#include "reachable.h"
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#include "parse-options.h"
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#include "progress.h"
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#include "prune-packed.h"
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#include "object-store.h"
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#include "shallow.h"
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static const char * const prune_usage[] = {
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N_("git prune [-n] [-v] [--progress] [--expire <time>] [--] [<head>...]"),
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NULL
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};
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static int show_only;
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static int verbose;
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static timestamp_t expire;
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static int show_progress = -1;
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static int prune_tmp_file(const char *fullpath)
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{
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struct stat st;
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if (lstat(fullpath, &st))
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return error("Could not stat '%s'", fullpath);
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if (st.st_mtime > expire)
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return 0;
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if (S_ISDIR(st.st_mode)) {
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if (show_only || verbose)
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printf("Removing stale temporary directory %s\n", fullpath);
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if (!show_only) {
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struct strbuf remove_dir_buf = STRBUF_INIT;
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strbuf_addstr(&remove_dir_buf, fullpath);
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remove_dir_recursively(&remove_dir_buf, 0);
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strbuf_release(&remove_dir_buf);
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}
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} else {
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if (show_only || verbose)
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printf("Removing stale temporary file %s\n", fullpath);
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if (!show_only)
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unlink_or_warn(fullpath);
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}
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return 0;
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}
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static void perform_reachability_traversal(struct rev_info *revs)
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{
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static int initialized;
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struct progress *progress = NULL;
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if (initialized)
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return;
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if (show_progress)
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progress = start_delayed_progress(_("Checking connectivity"), 0);
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mark_reachable_objects(revs, 1, expire, progress);
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stop_progress(&progress);
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initialized = 1;
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}
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static int is_object_reachable(const struct object_id *oid,
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struct rev_info *revs)
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{
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struct object *obj;
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perform_reachability_traversal(revs);
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obj = lookup_object(the_repository, oid);
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return obj && (obj->flags & SEEN);
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}
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static int prune_object(const struct object_id *oid, const char *fullpath,
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void *data)
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{
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struct rev_info *revs = data;
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struct stat st;
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if (is_object_reachable(oid, revs))
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return 0;
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if (lstat(fullpath, &st)) {
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/* report errors, but do not stop pruning */
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error("Could not stat '%s'", fullpath);
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return 0;
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}
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if (st.st_mtime > expire)
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return 0;
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if (show_only || verbose) {
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enum object_type type = oid_object_info(the_repository, oid,
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NULL);
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printf("%s %s\n", oid_to_hex(oid),
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(type > 0) ? type_name(type) : "unknown");
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}
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if (!show_only)
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unlink_or_warn(fullpath);
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return 0;
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}
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static int prune_cruft(const char *basename, const char *path, void *data)
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{
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if (starts_with(basename, "tmp_obj_"))
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prune_tmp_file(path);
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else
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fprintf(stderr, "bad sha1 file: %s\n", path);
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return 0;
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}
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static int prune_subdir(unsigned int nr, const char *path, void *data)
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{
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if (!show_only)
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rmdir(path);
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return 0;
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}
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/*
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* Write errors (particularly out of space) can result in
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* failed temporary packs (and more rarely indexes and other
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* files beginning with "tmp_") accumulating in the object
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* and the pack directories.
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*/
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static void remove_temporary_files(const char *path)
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{
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DIR *dir;
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struct dirent *de;
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dir = opendir(path);
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if (!dir) {
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fprintf(stderr, "Unable to open directory %s\n", path);
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return;
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}
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while ((de = readdir(dir)) != NULL)
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if (starts_with(de->d_name, "tmp_"))
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prune_tmp_file(mkpath("%s/%s", path, de->d_name));
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closedir(dir);
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}
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int cmd_prune(int argc, const char **argv, const char *prefix)
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{
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struct rev_info revs;
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int exclude_promisor_objects = 0;
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const struct option options[] = {
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OPT__DRY_RUN(&show_only, N_("do not remove, show only")),
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OPT__VERBOSE(&verbose, N_("report pruned objects")),
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OPT_BOOL(0, "progress", &show_progress, N_("show progress")),
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OPT_EXPIRY_DATE(0, "expire", &expire,
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N_("expire objects older than <time>")),
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OPT_BOOL(0, "exclude-promisor-objects", &exclude_promisor_objects,
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N_("limit traversal to objects outside promisor packfiles")),
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OPT_END()
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};
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char *s;
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expire = TIME_MAX;
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save_commit_buffer = 0;
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read_replace_refs = 0;
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repo_init_revisions(the_repository, &revs, prefix);
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argc = parse_options(argc, argv, prefix, options, prune_usage, 0);
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if (repository_format_precious_objects)
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die(_("cannot prune in a precious-objects repo"));
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while (argc--) {
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struct object_id oid;
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const char *name = *argv++;
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if (!get_oid(name, &oid)) {
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struct object *object = parse_object_or_die(&oid,
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name);
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add_pending_object(&revs, object, "");
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}
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else
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die("unrecognized argument: %s", name);
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}
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if (show_progress == -1)
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show_progress = isatty(2);
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if (exclude_promisor_objects) {
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fetch_if_missing = 0;
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revs.exclude_promisor_objects = 1;
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}
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for_each_loose_file_in_objdir(get_object_directory(), prune_object,
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prune_cruft, prune_subdir, &revs);
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prune_packed_objects(show_only ? PRUNE_PACKED_DRY_RUN : 0);
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remove_temporary_files(get_object_directory());
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s = mkpathdup("%s/pack", get_object_directory());
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remove_temporary_files(s);
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free(s);
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if (is_repository_shallow(the_repository)) {
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perform_reachability_traversal(&revs);
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prune_shallow(show_only ? PRUNE_SHOW_ONLY : 0);
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}
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release_revisions(&revs);
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return 0;
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}
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