builtin/prune.c

/* [<][>][^][v][top][bottom][index][help] */
This source file includes following definitions.
prune_tmp_file
prune_object
prune_cruft
prune_subdir
remove_temporary_files
cmd_prune
#include "cache.h"
#include "commit.h"
#include "diff.h"
#include "revision.h"
#include "builtin.h"
#include "reachable.h"
#include "parse-options.h"
#include "progress.h"

static const char * const prune_usage[] = {
        N_("git prune [-n] [-v] [--expire <time>] [--] [<head>...]"),
        NULL
};
static int show_only;
static int verbose;
static unsigned long expire;
static int show_progress = -1;

static int prune_tmp_file(const char *fullpath)
{
        struct stat st;
        if (lstat(fullpath, &st))
                return error("Could not stat '%s'", fullpath);
        if (st.st_mtime > expire)
                return 0;
        if (show_only || verbose)
                printf("Removing stale temporary file %s\n", fullpath);
        if (!show_only)
                unlink_or_warn(fullpath);
        return 0;
}

static int prune_object(const unsigned char *sha1, const char *fullpath,
                        void *data)
{
        struct stat st;

        /*
         * Do we know about this object?
         * It must have been reachable
         */
        if (lookup_object(sha1))
                return 0;

        if (lstat(fullpath, &st)) {
                /* report errors, but do not stop pruning */
                error("Could not stat '%s'", fullpath);
                return 0;
        }
        if (st.st_mtime > expire)
                return 0;
        if (show_only || verbose) {
                enum object_type type = sha1_object_info(sha1, NULL);
                printf("%s %s\n", sha1_to_hex(sha1),
                       (type > 0) ? typename(type) : "unknown");
        }
        if (!show_only)
                unlink_or_warn(fullpath);
        return 0;
}

static int prune_cruft(const char *basename, const char *path, void *data)
{
        if (starts_with(basename, "tmp_obj_"))
                prune_tmp_file(path);
        else
                fprintf(stderr, "bad sha1 file: %s\n", path);
        return 0;
}

static int prune_subdir(int nr, const char *path, void *data)
{
        if (!show_only)
                rmdir(path);
        return 0;
}

/*
 * Write errors (particularly out of space) can result in
 * failed temporary packs (and more rarely indexes and other
 * files beginning with "tmp_") accumulating in the object
 * and the pack directories.
 */
static void remove_temporary_files(const char *path)
{
        DIR *dir;
        struct dirent *de;

        dir = opendir(path);
        if (!dir) {
                fprintf(stderr, "Unable to open directory %s\n", path);
                return;
        }
        while ((de = readdir(dir)) != NULL)
                if (starts_with(de->d_name, "tmp_"))
                        prune_tmp_file(mkpath("%s/%s", path, de->d_name));
        closedir(dir);
}

int cmd_prune(int argc, const char **argv, const char *prefix)
{
        struct rev_info revs;
        struct progress *progress = NULL;
        const struct option options[] = {
                OPT__DRY_RUN(&show_only, N_("do not remove, show only")),
                OPT__VERBOSE(&verbose, N_("report pruned objects")),
                OPT_BOOL(0, "progress", &show_progress, N_("show progress")),
                OPT_EXPIRY_DATE(0, "expire", &expire,
                                N_("expire objects older than <time>")),
                OPT_END()
        };
        char *s;

        expire = ULONG_MAX;
        save_commit_buffer = 0;
        check_replace_refs = 0;
        ref_paranoia = 1;
        init_revisions(&revs, prefix);

        argc = parse_options(argc, argv, prefix, options, prune_usage, 0);

        if (repository_format_precious_objects)
                die(_("cannot prune in a precious-objects repo"));

        while (argc--) {
                unsigned char sha1[20];
                const char *name = *argv++;

                if (!get_sha1(name, sha1)) {
                        struct object *object = parse_object_or_die(sha1, name);
                        add_pending_object(&revs, object, "");
                }
                else
                        die("unrecognized argument: %s", name);
        }

        if (show_progress == -1)
                show_progress = isatty(2);
        if (show_progress)
                progress = start_progress_delay(_("Checking connectivity"), 0, 0, 2);

        mark_reachable_objects(&revs, 1, expire, progress);
        stop_progress(&progress);
        for_each_loose_file_in_objdir(get_object_directory(), prune_object,
                                      prune_cruft, prune_subdir, NULL);

        prune_packed_objects(show_only ? PRUNE_PACKED_DRY_RUN : 0);
        remove_temporary_files(get_object_directory());
        s = mkpathdup("%s/pack", get_object_directory());
        remove_temporary_files(s);
        free(s);

        if (is_repository_shallow())
                prune_shallow(show_only);

        return 0;
}
/* [<][>][^][v][top][bottom][index][help] */
root/builtin/prune.c

DEFINITIONS
