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git/builtin/checkout-index.c

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/*
* Check-out files from the "current cache directory"
*
* Copyright (C) 2005 Linus Torvalds
*
*/
#include "builtin.h"
#include "config.h"
#include "gettext.h"
#include "lockfile.h"
#include "quote.h"
#include "repository.h"
#include "cache-tree.h"
#include "parse-options.h"
#include "entry.h"
#include "parallel-checkout.h"
#include "read-cache-ll.h"
#include "setup.h"
#include "sparse-index.h"
#define CHECKOUT_ALL 4
static int nul_term_line;
static int checkout_stage; /* default to checkout stage0 */
static int ignore_skip_worktree; /* default to 0 */
static int to_tempfile = -1;
static char topath[4][TEMPORARY_FILENAME_LENGTH + 1];
static struct checkout state = CHECKOUT_INIT;
static void write_tempfile_record(const char *name, const char *prefix)
{
int i;
int have_tempname = 0;
if (CHECKOUT_ALL == checkout_stage) {
for (i = 1; i < 4; i++)
if (topath[i][0]) {
have_tempname = 1;
break;
}
if (have_tempname) {
for (i = 1; i < 4; i++) {
if (i > 1)
putchar(' ');
if (topath[i][0])
fputs(topath[i], stdout);
else
putchar('.');
}
}
} else if (topath[checkout_stage][0]) {
have_tempname = 1;
fputs(topath[checkout_stage], stdout);
}
if (have_tempname) {
putchar('\t');
write_name_quoted_relative(name, prefix, stdout,
nul_term_line ? '\0' : '\n');
}
for (i = 0; i < 4; i++) {
topath[i][0] = 0;
}
}
static int checkout_file(const char *name, const char *prefix)
{
int namelen = strlen(name);
int pos = index_name_pos(the_repository->index, name, namelen);
int has_same_name = 0;
int is_file = 0;
int is_skipped = 1;
int did_checkout = 0;
int errs = 0;
if (pos < 0)
pos = -pos - 1;
while (pos <the_repository->index->cache_nr) {
struct cache_entry *ce =the_repository->index->cache[pos];
if (ce_namelen(ce) != namelen ||
memcmp(ce->name, name, namelen))
break;
has_same_name = 1;
pos++;
if (S_ISSPARSEDIR(ce->ce_mode))
break;
is_file = 1;
if (!ignore_skip_worktree && ce_skip_worktree(ce))
break;
is_skipped = 0;
if (ce_stage(ce) != checkout_stage
&& (CHECKOUT_ALL != checkout_stage || !ce_stage(ce)))
continue;
did_checkout = 1;
if (checkout_entry(ce, &state,
to_tempfile ? topath[ce_stage(ce)] : NULL,
NULL) < 0)
errs++;
}
if (did_checkout) {
if (to_tempfile)
write_tempfile_record(name, prefix);
return errs > 0 ? -1 : 0;
}
/*
* At this point we know we didn't try to check anything out. If it was
* because we did find an entry but it was stage 0, that's not an
* error.
*/
if (has_same_name && checkout_stage == CHECKOUT_ALL)
return 0;
if (!state.quiet) {
fprintf(stderr, "git checkout-index: %s ", name);
if (!has_same_name)
fprintf(stderr, "is not in the cache");
else if (!is_file)
fprintf(stderr, "is a sparse directory");
else if (is_skipped)
fprintf(stderr, "has skip-worktree enabled; "
"use '--ignore-skip-worktree-bits' to checkout");
else if (checkout_stage)
fprintf(stderr, "does not exist at stage %d",
checkout_stage);
else
fprintf(stderr, "is unmerged");
fputc('\n', stderr);
}
return -1;
}
static int checkout_all(const char *prefix, int prefix_length)
{
int i, errs = 0;
struct cache_entry *last_ce = NULL;
for (i = 0; i < the_repository->index->cache_nr ; i++) {
struct cache_entry *ce = the_repository->index->cache[i];
if (S_ISSPARSEDIR(ce->ce_mode)) {
if (!ce_skip_worktree(ce))
BUG("sparse directory '%s' does not have skip-worktree set", ce->name);
/*
* If the current entry is a sparse directory and skip-worktree
* entries are being checked out, expand the index and continue
* the loop on the current index position (now pointing to the
* first entry inside the expanded sparse directory).
*/
if (ignore_skip_worktree) {
ensure_full_index(the_repository->index);
ce = the_repository->index->cache[i];
}
}
if (!ignore_skip_worktree && ce_skip_worktree(ce))
continue;
if (ce_stage(ce) != checkout_stage
&& (CHECKOUT_ALL != checkout_stage || !ce_stage(ce)))
continue;
if (prefix && *prefix &&
(ce_namelen(ce) <= prefix_length ||
memcmp(prefix, ce->name, prefix_length)))
continue;
if (last_ce && to_tempfile) {
if (ce_namelen(last_ce) != ce_namelen(ce)
|| memcmp(last_ce->name, ce->name, ce_namelen(ce)))
write_tempfile_record(last_ce->name, prefix);
}
if (checkout_entry(ce, &state,
to_tempfile ? topath[ce_stage(ce)] : NULL,
NULL) < 0)
errs++;
last_ce = ce;
}
if (last_ce && to_tempfile)
write_tempfile_record(last_ce->name, prefix);
return !!errs;
}
static const char * const builtin_checkout_index_usage[] = {
N_("git checkout-index [<options>] [--] [<file>...]"),
NULL
};
static int option_parse_stage(const struct option *opt,
const char *arg, int unset)
{
int *stage = opt->value;
BUG_ON_OPT_NEG(unset);
if (!strcmp(arg, "all")) {
*stage = CHECKOUT_ALL;
} else {
int ch = arg[0];
if ('1' <= ch && ch <= '3')
*stage = arg[0] - '0';
else
die(_("stage should be between 1 and 3 or all"));
}
return 0;
}
int cmd_checkout_index(int argc, const char **argv, const char *prefix)
{
int i;
struct lock_file lock_file = LOCK_INIT;
int all = 0;
int read_from_stdin = 0;
int prefix_length;
int force = 0, quiet = 0, not_new = 0;
int index_opt = 0;
int err = 0;
int pc_workers, pc_threshold;
struct option builtin_checkout_index_options[] = {
OPT_BOOL('a', "all", &all,
N_("check out all files in the index")),
OPT_BOOL(0, "ignore-skip-worktree-bits", &ignore_skip_worktree,
N_("do not skip files with skip-worktree set")),
OPT__FORCE(&force, N_("force overwrite of existing files"), 0),
OPT__QUIET(&quiet,
N_("no warning for existing files and files not in index")),
OPT_BOOL('n', "no-create", &not_new,
N_("don't checkout new files")),
OPT_BOOL('u', "index", &index_opt,
N_("update stat information in the index file")),
OPT_BOOL('z', NULL, &nul_term_line,
N_("paths are separated with NUL character")),
OPT_BOOL(0, "stdin", &read_from_stdin,
N_("read list of paths from the standard input")),
OPT_BOOL(0, "temp", &to_tempfile,
N_("write the content to temporary files")),
OPT_STRING(0, "prefix", &state.base_dir, N_("string"),
N_("when creating files, prepend <string>")),
OPT_CALLBACK_F(0, "stage", &checkout_stage, "(1|2|3|all)",
N_("copy out the files from named stage"),
PARSE_OPT_NONEG, option_parse_stage),
OPT_END()
};
if (argc == 2 && !strcmp(argv[1], "-h"))
usage_with_options(builtin_checkout_index_usage,
builtin_checkout_index_options);
git_config(git_default_config, NULL);
prefix_length = prefix ? strlen(prefix) : 0;
prepare_repo_settings(the_repository);
the_repository->settings.command_requires_full_index = 0;
if (repo_read_index(the_repository) < 0) {
die("invalid cache");
}
argc = parse_options(argc, argv, prefix, builtin_checkout_index_options,
builtin_checkout_index_usage, 0);
state.istate = the_repository->index;
state.force = force;
state.quiet = quiet;
state.not_new = not_new;
if (!state.base_dir)
state.base_dir = "";
state.base_dir_len = strlen(state.base_dir);
if (to_tempfile < 0)
to_tempfile = (checkout_stage == CHECKOUT_ALL);
if (!to_tempfile && checkout_stage == CHECKOUT_ALL)
die(_("options '%s' and '%s' cannot be used together"),
"--stage=all", "--no-temp");
/*
* when --prefix is specified we do not want to update cache.
*/
if (index_opt && !state.base_dir_len && !to_tempfile) {
state.refresh_cache = 1;
state.istate = the_repository->index;
repo_hold_locked_index(the_repository, &lock_file,
LOCK_DIE_ON_ERROR);
}
get_parallel_checkout_configs(&pc_workers, &pc_threshold);
if (pc_workers > 1)
init_parallel_checkout();
/* Check out named files first */
for (i = 0; i < argc; i++) {
const char *arg = argv[i];
char *p;
if (all)
die("git checkout-index: don't mix '--all' and explicit filenames");
if (read_from_stdin)
die("git checkout-index: don't mix '--stdin' and explicit filenames");
p = prefix_path(prefix, prefix_length, arg);
err |= checkout_file(p, prefix);
free(p);
}
if (read_from_stdin) {
struct strbuf buf = STRBUF_INIT;
struct strbuf unquoted = STRBUF_INIT;
strbuf_getline_fn getline_fn;
if (all)
die("git checkout-index: don't mix '--all' and '--stdin'");
getline_fn = nul_term_line ? strbuf_getline_nul : strbuf_getline_lf;
while (getline_fn(&buf, stdin) != EOF) {
char *p;
if (!nul_term_line && buf.buf[0] == '"') {
strbuf_reset(&unquoted);
if (unquote_c_style(&unquoted, buf.buf, NULL))
die("line is badly quoted");
strbuf_swap(&buf, &unquoted);
}
p = prefix_path(prefix, prefix_length, buf.buf);
err |= checkout_file(p, prefix);
free(p);
}
strbuf_release(&unquoted);
strbuf_release(&buf);
}
if (all)
err |= checkout_all(prefix, prefix_length);
if (pc_workers > 1)
err |= run_parallel_checkout(&state, pc_workers, pc_threshold,
NULL, NULL);
if (err)
return 1;
if (is_lock_file_locked(&lock_file) &&
write_locked_index(the_repository->index, &lock_file, COMMIT_LOCK))
die("Unable to write new index file");
return 0;
}
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