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/*
* git gc builtin command
*
* Cleanup unreachable files and optimize the repository.
*
* Copyright (c) 2007 James Bowes
*
* Based on git-gc.sh, which is
*
* Copyright (c) 2006 Shawn O. Pearce
*/
#include "cache.h"
#include "run-command.h"
#define FAILED_RUN "failed to run %s"
static const char builtin_gc_usage[] = "git-gc [--prune] [--aggressive]";
static int pack_refs = 1;
static int aggressive_window = -1;
#define MAX_ADD 10
static const char *argv_pack_refs[] = {"pack-refs", "--all", "--prune", NULL};
static const char *argv_reflog[] = {"reflog", "expire", "--all", NULL};
static const char *argv_repack[MAX_ADD] = {"repack", "-a", "-d", "-l", NULL};
static const char *argv_prune[] = {"prune", NULL};
static const char *argv_rerere[] = {"rerere", "gc", NULL};
static int gc_config(const char *var, const char *value)
{
if (!strcmp(var, "gc.packrefs")) {
if (!strcmp(value, "notbare"))
pack_refs = -1;
else
pack_refs = git_config_bool(var, value);
return 0;
}
if (!strcmp(var, "gc.aggressivewindow")) {
aggressive_window = git_config_int(var, value);
return 0;
}
return git_default_config(var, value);
}
static void append_option(const char **cmd, const char *opt, int max_length)
{
int i;
for (i = 0; cmd[i]; i++)
;
if (i + 2 >= max_length)
die("Too many options specified");
cmd[i++] = opt;
cmd[i] = NULL;
}
int cmd_gc(int argc, const char **argv, const char *prefix)
{
int i;
int prune = 0;
char buf[80];
git_config(gc_config);
if (pack_refs < 0)
pack_refs = !is_bare_repository();
for (i = 1; i < argc; i++) {
const char *arg = argv[i];
if (!strcmp(arg, "--prune")) {
prune = 1;
continue;
}
if (!strcmp(arg, "--aggressive")) {
append_option(argv_repack, "-f", MAX_ADD);
if (aggressive_window > 0) {
sprintf(buf, "--window=%d", aggressive_window);
append_option(argv_repack, buf, MAX_ADD);
}
continue;
}
/* perhaps other parameters later... */
break;
}
if (i != argc)
usage(builtin_gc_usage);
if (pack_refs && run_command_v_opt(argv_pack_refs, RUN_GIT_CMD))
return error(FAILED_RUN, argv_pack_refs[0]);
if (run_command_v_opt(argv_reflog, RUN_GIT_CMD))
return error(FAILED_RUN, argv_reflog[0]);
if (run_command_v_opt(argv_repack, RUN_GIT_CMD))
return error(FAILED_RUN, argv_repack[0]);
if (prune && run_command_v_opt(argv_prune, RUN_GIT_CMD))
return error(FAILED_RUN, argv_prune[0]);
if (run_command_v_opt(argv_rerere, RUN_GIT_CMD))
return error(FAILED_RUN, argv_rerere[0]);
return 0;
}
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