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git/builtin/sparse-checkout.c

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#include "builtin.h"
#include "config.h"
#include "dir.h"
#include "environment.h"
#include "gettext.h"
#include "object-file.h"
#include "object-name.h"
#include "parse-options.h"
#include "pathspec.h"
#include "repository.h"
#include "strbuf.h"
#include "string-list.h"
#include "lockfile.h"
#include "unpack-trees.h"
#include "quote.h"
#include "setup.h"
#include "sparse-index.h"
#include "worktree.h"
static const char *empty_base = "";
static char const * const builtin_sparse_checkout_usage[] = {
N_("git sparse-checkout (init | list | set | add | reapply | disable | check-rules) [<options>]"),
NULL
};
static void write_patterns_to_file(FILE *fp, struct pattern_list *pl)
{
int i;
for (i = 0; i < pl->nr; i++) {
struct path_pattern *p = pl->patterns[i];
if (p->flags & PATTERN_FLAG_NEGATIVE)
fprintf(fp, "!");
fprintf(fp, "%s", p->pattern);
if (p->flags & PATTERN_FLAG_MUSTBEDIR)
fprintf(fp, "/");
fprintf(fp, "\n");
}
}
static char const * const builtin_sparse_checkout_list_usage[] = {
"git sparse-checkout list",
NULL
};
static int sparse_checkout_list(int argc, const char **argv, const char *prefix)
{
static struct option builtin_sparse_checkout_list_options[] = {
OPT_END(),
};
struct pattern_list pl;
char *sparse_filename;
int res;
setup_work_tree();
if (!core_apply_sparse_checkout)
die(_("this worktree is not sparse"));
argc = parse_options(argc, argv, prefix,
builtin_sparse_checkout_list_options,
builtin_sparse_checkout_list_usage, 0);
memset(&pl, 0, sizeof(pl));
pl.use_cone_patterns = core_sparse_checkout_cone;
sparse_filename = get_sparse_checkout_filename();
res = add_patterns_from_file_to_list(sparse_filename, "", 0, &pl, NULL, 0);
free(sparse_filename);
if (res < 0) {
warning(_("this worktree is not sparse (sparse-checkout file may not exist)"));
return 0;
}
if (pl.use_cone_patterns) {
int i;
struct pattern_entry *pe;
struct hashmap_iter iter;
struct string_list sl = STRING_LIST_INIT_DUP;
hashmap_for_each_entry(&pl.recursive_hashmap, &iter, pe, ent) {
/* pe->pattern starts with "/", skip it */
string_list_insert(&sl, pe->pattern + 1);
}
string_list_sort(&sl);
for (i = 0; i < sl.nr; i++) {
quote_c_style(sl.items[i].string, NULL, stdout, 0);
printf("\n");
}
string_list_clear(&sl, 0);
} else {
write_patterns_to_file(stdout, &pl);
}
clear_pattern_list(&pl);
return 0;
}
static void clean_tracked_sparse_directories(struct repository *r)
{
int i, was_full = 0;
struct strbuf path = STRBUF_INIT;
size_t pathlen;
struct string_list_item *item;
struct string_list sparse_dirs = STRING_LIST_INIT_DUP;
/*
* If we are not using cone mode patterns, then we cannot
* delete directories outside of the sparse cone.
*/
if (!r || !r->index || !r->worktree)
return;
if (init_sparse_checkout_patterns(r->index) ||
!r->index->sparse_checkout_patterns->use_cone_patterns)
return;
/*
* Use the sparse index as a data structure to assist finding
* directories that are safe to delete. This conversion to a
* sparse index will not delete directories that contain
* conflicted entries or submodules.
*/
if (r->index->sparse_index == INDEX_EXPANDED) {
/*
* If something, such as a merge conflict or other concern,
* prevents us from converting to a sparse index, then do
* not try deleting files.
*/
if (convert_to_sparse(r->index, SPARSE_INDEX_MEMORY_ONLY))
return;
was_full = 1;
}
strbuf_addstr(&path, r->worktree);
strbuf_complete(&path, '/');
pathlen = path.len;
/*
* Collect directories that have gone out of scope but also
* exist on disk, so there is some work to be done. We need to
* store the entries in a list before exploring, since that might
* expand the sparse-index again.
*/
for (i = 0; i < r->index->cache_nr; i++) {
struct cache_entry *ce = r->index->cache[i];
if (S_ISSPARSEDIR(ce->ce_mode) &&
repo_file_exists(r, ce->name))
string_list_append(&sparse_dirs, ce->name);
}
for_each_string_list_item(item, &sparse_dirs) {
struct dir_struct dir = DIR_INIT;
struct pathspec p = { 0 };
struct strvec s = STRVEC_INIT;
strbuf_setlen(&path, pathlen);
strbuf_addstr(&path, item->string);
dir.flags |= DIR_SHOW_IGNORED_TOO;
setup_standard_excludes(&dir);
strvec_push(&s, path.buf);
parse_pathspec(&p, PATHSPEC_GLOB, 0, NULL, s.v);
fill_directory(&dir, r->index, &p);
if (dir.nr) {
warning(_("directory '%s' contains untracked files,"
" but is not in the sparse-checkout cone"),
item->string);
} else if (remove_dir_recursively(&path, 0)) {
/*
* Removal is "best effort". If something blocks
* the deletion, then continue with a warning.
*/
warning(_("failed to remove directory '%s'"),
item->string);
}
strvec_clear(&s);
clear_pathspec(&p);
dir_clear(&dir);
}
string_list_clear(&sparse_dirs, 0);
strbuf_release(&path);
if (was_full)
ensure_full_index(r->index);
}
static int update_working_directory(struct pattern_list *pl)
{
enum update_sparsity_result result;
struct unpack_trees_options o;
struct lock_file lock_file = LOCK_INIT;
struct repository *r = the_repository;
struct pattern_list *old_pl;
/* If no branch has been checked out, there are no updates to make. */
if (is_index_unborn(r->index))
return UPDATE_SPARSITY_SUCCESS;
old_pl = r->index->sparse_checkout_patterns;
r->index->sparse_checkout_patterns = pl;
memset(&o, 0, sizeof(o));
o.verbose_update = isatty(2);
o.update = 1;
o.head_idx = -1;
o.src_index = r->index;
o.dst_index = r->index;
o.skip_sparse_checkout = 0;
setup_work_tree();
repo_hold_locked_index(r, &lock_file, LOCK_DIE_ON_ERROR);
setup_unpack_trees_porcelain(&o, "sparse-checkout");
result = update_sparsity(&o, pl);
clear_unpack_trees_porcelain(&o);
if (result == UPDATE_SPARSITY_WARNINGS)
/*
* We don't do any special handling of warnings from untracked
* files in the way or dirty entries that can't be removed.
*/
result = UPDATE_SPARSITY_SUCCESS;
if (result == UPDATE_SPARSITY_SUCCESS)
write_locked_index(r->index, &lock_file, COMMIT_LOCK);
else
rollback_lock_file(&lock_file);
clean_tracked_sparse_directories(r);
if (r->index->sparse_checkout_patterns != pl) {
clear_pattern_list(r->index->sparse_checkout_patterns);
FREE_AND_NULL(r->index->sparse_checkout_patterns);
}
r->index->sparse_checkout_patterns = old_pl;
return result;
}
static char *escaped_pattern(char *pattern)
{
char *p = pattern;
struct strbuf final = STRBUF_INIT;
while (*p) {
if (is_glob_special(*p))
strbuf_addch(&final, '\\');
strbuf_addch(&final, *p);
p++;
}
return strbuf_detach(&final, NULL);
}
static void write_cone_to_file(FILE *fp, struct pattern_list *pl)
{
int i;
struct pattern_entry *pe;
struct hashmap_iter iter;
struct string_list sl = STRING_LIST_INIT_DUP;
struct strbuf parent_pattern = STRBUF_INIT;
hashmap_for_each_entry(&pl->parent_hashmap, &iter, pe, ent) {
if (hashmap_get_entry(&pl->recursive_hashmap, pe, ent, NULL))
continue;
if (!hashmap_contains_parent(&pl->recursive_hashmap,
pe->pattern,
&parent_pattern))
string_list_insert(&sl, pe->pattern);
}
string_list_sort(&sl);
string_list_remove_duplicates(&sl, 0);
fprintf(fp, "/*\n!/*/\n");
for (i = 0; i < sl.nr; i++) {
char *pattern = escaped_pattern(sl.items[i].string);
if (strlen(pattern))
fprintf(fp, "%s/\n!%s/*/\n", pattern, pattern);
free(pattern);
}
string_list_clear(&sl, 0);
hashmap_for_each_entry(&pl->recursive_hashmap, &iter, pe, ent) {
if (!hashmap_contains_parent(&pl->recursive_hashmap,
pe->pattern,
&parent_pattern))
string_list_insert(&sl, pe->pattern);
}
strbuf_release(&parent_pattern);
string_list_sort(&sl);
string_list_remove_duplicates(&sl, 0);
for (i = 0; i < sl.nr; i++) {
char *pattern = escaped_pattern(sl.items[i].string);
fprintf(fp, "%s/\n", pattern);
free(pattern);
}
string_list_clear(&sl, 0);
}
static int write_patterns_and_update(struct pattern_list *pl)
{
char *sparse_filename;
FILE *fp;
struct lock_file lk = LOCK_INIT;
int result;
sparse_filename = get_sparse_checkout_filename();
if (safe_create_leading_directories(sparse_filename))
die(_("failed to create directory for sparse-checkout file"));
hold_lock_file_for_update(&lk, sparse_filename, LOCK_DIE_ON_ERROR);
result = update_working_directory(pl);
if (result) {
rollback_lock_file(&lk);
update_working_directory(NULL);
goto out;
}
fp = fdopen_lock_file(&lk, "w");
if (!fp)
die_errno(_("unable to fdopen %s"), get_lock_file_path(&lk));
if (core_sparse_checkout_cone)
write_cone_to_file(fp, pl);
else
write_patterns_to_file(fp, pl);
if (commit_lock_file(&lk))
die_errno(_("unable to write %s"), sparse_filename);
out:
clear_pattern_list(pl);
free(sparse_filename);
return result;
}
enum sparse_checkout_mode {
MODE_NO_PATTERNS = 0,
MODE_ALL_PATTERNS = 1,
MODE_CONE_PATTERNS = 2,
};
static int set_config(enum sparse_checkout_mode mode)
{
/* Update to use worktree config, if not already. */
if (init_worktree_config(the_repository)) {
error(_("failed to initialize worktree config"));
return 1;
}
if (repo_config_set_worktree_gently(the_repository,
"core.sparseCheckout",
mode ? "true" : "false") ||
repo_config_set_worktree_gently(the_repository,
"core.sparseCheckoutCone",
mode == MODE_CONE_PATTERNS ?
"true" : "false"))
return 1;
if (mode == MODE_NO_PATTERNS)
return set_sparse_index_config(the_repository, 0);
return 0;
}
static enum sparse_checkout_mode update_cone_mode(int *cone_mode) {
/* If not specified, use previous definition of cone mode */
if (*cone_mode == -1 && core_apply_sparse_checkout)
*cone_mode = core_sparse_checkout_cone;
/* Set cone/non-cone mode appropriately */
core_apply_sparse_checkout = 1;
if (*cone_mode == 1 || *cone_mode == -1) {
core_sparse_checkout_cone = 1;
return MODE_CONE_PATTERNS;
}
core_sparse_checkout_cone = 0;
return MODE_ALL_PATTERNS;
}
static int update_modes(int *cone_mode, int *sparse_index)
{
int mode, record_mode;
/* Determine if we need to record the mode; ensure sparse checkout on */
record_mode = (*cone_mode != -1) || !core_apply_sparse_checkout;
mode = update_cone_mode(cone_mode);
if (record_mode && set_config(mode))
return 1;
/* Set sparse-index/non-sparse-index mode if specified */
if (*sparse_index >= 0) {
if (set_sparse_index_config(the_repository, *sparse_index) < 0)
die(_("failed to modify sparse-index config"));
/* force an index rewrite */
repo_read_index(the_repository);
the_repository->index->updated_workdir = 1;
if (!*sparse_index)
ensure_full_index(the_repository->index);
}
return 0;
}
static char const * const builtin_sparse_checkout_init_usage[] = {
"git sparse-checkout init [--cone] [--[no-]sparse-index]",
NULL
};
static struct sparse_checkout_init_opts {
int cone_mode;
int sparse_index;
} init_opts;
static int sparse_checkout_init(int argc, const char **argv, const char *prefix)
{
struct pattern_list pl;
char *sparse_filename;
int res;
struct object_id oid;
static struct option builtin_sparse_checkout_init_options[] = {
OPT_BOOL(0, "cone", &init_opts.cone_mode,
N_("initialize the sparse-checkout in cone mode")),
OPT_BOOL(0, "sparse-index", &init_opts.sparse_index,
N_("toggle the use of a sparse index")),
OPT_END(),
};
setup_work_tree();
repo_read_index(the_repository);
init_opts.cone_mode = -1;
init_opts.sparse_index = -1;
argc = parse_options(argc, argv, prefix,
builtin_sparse_checkout_init_options,
builtin_sparse_checkout_init_usage, 0);
if (update_modes(&init_opts.cone_mode, &init_opts.sparse_index))
return 1;
memset(&pl, 0, sizeof(pl));
sparse_filename = get_sparse_checkout_filename();
res = add_patterns_from_file_to_list(sparse_filename, "", 0, &pl, NULL, 0);
/* If we already have a sparse-checkout file, use it. */
if (res >= 0) {
free(sparse_filename);
clear_pattern_list(&pl);
return update_working_directory(NULL);
}
if (repo_get_oid(the_repository, "HEAD", &oid)) {
FILE *fp;
/* assume we are in a fresh repo, but update the sparse-checkout file */
if (safe_create_leading_directories(sparse_filename))
die(_("unable to create leading directories of %s"),
sparse_filename);
fp = xfopen(sparse_filename, "w");
if (!fp)
die(_("failed to open '%s'"), sparse_filename);
free(sparse_filename);
fprintf(fp, "/*\n!/*/\n");
fclose(fp);
return 0;
}
free(sparse_filename);
add_pattern("/*", empty_base, 0, &pl, 0);
add_pattern("!/*/", empty_base, 0, &pl, 0);
pl.use_cone_patterns = init_opts.cone_mode;
return write_patterns_and_update(&pl);
}
static void insert_recursive_pattern(struct pattern_list *pl, struct strbuf *path)
{
struct pattern_entry *e = xmalloc(sizeof(*e));
e->patternlen = path->len;
e->pattern = strbuf_detach(path, NULL);
hashmap_entry_init(&e->ent, fspathhash(e->pattern));
hashmap_add(&pl->recursive_hashmap, &e->ent);
while (e->patternlen) {
char *slash = strrchr(e->pattern, '/');
char *oldpattern = e->pattern;
size_t newlen;
struct pattern_entry *dup;
if (!slash || slash == e->pattern)
break;
newlen = slash - e->pattern;
e = xmalloc(sizeof(struct pattern_entry));
e->patternlen = newlen;
e->pattern = xstrndup(oldpattern, newlen);
hashmap_entry_init(&e->ent, fspathhash(e->pattern));
dup = hashmap_get_entry(&pl->parent_hashmap, e, ent, NULL);
if (!dup) {
hashmap_add(&pl->parent_hashmap, &e->ent);
} else {
free(e->pattern);
free(e);
e = dup;
}
}
}
static void strbuf_to_cone_pattern(struct strbuf *line, struct pattern_list *pl)
{
strbuf_trim(line);
strbuf_trim_trailing_dir_sep(line);
if (strbuf_normalize_path(line))
die(_("could not normalize path %s"), line->buf);
if (!line->len)
return;
if (line->buf[0] != '/')
strbuf_insertstr(line, 0, "/");
insert_recursive_pattern(pl, line);
}
static void add_patterns_from_input(struct pattern_list *pl,
int argc, const char **argv,
FILE *file)
{
int i;
if (core_sparse_checkout_cone) {
struct strbuf line = STRBUF_INIT;
hashmap_init(&pl->recursive_hashmap, pl_hashmap_cmp, NULL, 0);
hashmap_init(&pl->parent_hashmap, pl_hashmap_cmp, NULL, 0);
pl->use_cone_patterns = 1;
if (file) {
struct strbuf unquoted = STRBUF_INIT;
while (!strbuf_getline(&line, file)) {
if (line.buf[0] == '"') {
strbuf_reset(&unquoted);
if (unquote_c_style(&unquoted, line.buf, NULL))
die(_("unable to unquote C-style string '%s'"),
line.buf);
strbuf_swap(&unquoted, &line);
}
strbuf_to_cone_pattern(&line, pl);
}
strbuf_release(&unquoted);
} else {
for (i = 0; i < argc; i++) {
strbuf_setlen(&line, 0);
strbuf_addstr(&line, argv[i]);
strbuf_to_cone_pattern(&line, pl);
}
}
strbuf_release(&line);
} else {
if (file) {
struct strbuf line = STRBUF_INIT;
while (!strbuf_getline(&line, file))
add_pattern(line.buf, empty_base, 0, pl, 0);
strbuf_release(&line);
} else {
for (i = 0; i < argc; i++)
add_pattern(argv[i], empty_base, 0, pl, 0);
}
}
}
enum modify_type {
REPLACE,
ADD,
};
static void add_patterns_cone_mode(int argc, const char **argv,
struct pattern_list *pl,
int use_stdin)
{
struct strbuf buffer = STRBUF_INIT;
struct pattern_entry *pe;
struct hashmap_iter iter;
struct pattern_list existing;
char *sparse_filename = get_sparse_checkout_filename();
add_patterns_from_input(pl, argc, argv,
use_stdin ? stdin : NULL);
memset(&existing, 0, sizeof(existing));
existing.use_cone_patterns = core_sparse_checkout_cone;
if (add_patterns_from_file_to_list(sparse_filename, "", 0,
&existing, NULL, 0))
die(_("unable to load existing sparse-checkout patterns"));
free(sparse_filename);
if (!existing.use_cone_patterns)
die(_("existing sparse-checkout patterns do not use cone mode"));
hashmap_for_each_entry(&existing.recursive_hashmap, &iter, pe, ent) {
if (!hashmap_contains_parent(&pl->recursive_hashmap,
pe->pattern, &buffer) ||
!hashmap_contains_parent(&pl->parent_hashmap,
pe->pattern, &buffer)) {
strbuf_reset(&buffer);
strbuf_addstr(&buffer, pe->pattern);
insert_recursive_pattern(pl, &buffer);
}
}
clear_pattern_list(&existing);
strbuf_release(&buffer);
}
static void add_patterns_literal(int argc, const char **argv,
struct pattern_list *pl,
int use_stdin)
{
char *sparse_filename = get_sparse_checkout_filename();
if (add_patterns_from_file_to_list(sparse_filename, "", 0,
pl, NULL, 0))
die(_("unable to load existing sparse-checkout patterns"));
free(sparse_filename);
add_patterns_from_input(pl, argc, argv, use_stdin ? stdin : NULL);
}
static int modify_pattern_list(int argc, const char **argv, int use_stdin,
enum modify_type m)
{
int result;
int changed_config = 0;
struct pattern_list *pl = xcalloc(1, sizeof(*pl));
switch (m) {
case ADD:
if (core_sparse_checkout_cone)
add_patterns_cone_mode(argc, argv, pl, use_stdin);
else
add_patterns_literal(argc, argv, pl, use_stdin);
break;
case REPLACE:
add_patterns_from_input(pl, argc, argv,
use_stdin ? stdin : NULL);
break;
}
if (!core_apply_sparse_checkout) {
set_config(MODE_ALL_PATTERNS);
core_apply_sparse_checkout = 1;
changed_config = 1;
}
result = write_patterns_and_update(pl);
if (result && changed_config)
set_config(MODE_NO_PATTERNS);
clear_pattern_list(pl);
free(pl);
return result;
}
static void sanitize_paths(int argc, const char **argv,
const char *prefix, int skip_checks)
{
int i;
if (!argc)
return;
if (prefix && *prefix && core_sparse_checkout_cone) {
/*
* The args are not pathspecs, so unfortunately we
* cannot imitate how cmd_add() uses parse_pathspec().
*/
int prefix_len = strlen(prefix);
for (i = 0; i < argc; i++)
argv[i] = prefix_path(prefix, prefix_len, argv[i]);
}
if (skip_checks)
return;
if (prefix && *prefix && !core_sparse_checkout_cone)
die(_("please run from the toplevel directory in non-cone mode"));
if (core_sparse_checkout_cone) {
for (i = 0; i < argc; i++) {
if (argv[i][0] == '/')
die(_("specify directories rather than patterns (no leading slash)"));
if (argv[i][0] == '!')
die(_("specify directories rather than patterns. If your directory starts with a '!', pass --skip-checks"));
if (strpbrk(argv[i], "*?[]"))
die(_("specify directories rather than patterns. If your directory really has any of '*?[]\\' in it, pass --skip-checks"));
}
}
for (i = 0; i < argc; i++) {
struct cache_entry *ce;
struct index_state *index = the_repository->index;
int pos = index_name_pos(index, argv[i], strlen(argv[i]));
if (pos < 0)
continue;
ce = index->cache[pos];
if (S_ISSPARSEDIR(ce->ce_mode))
continue;
if (core_sparse_checkout_cone)
die(_("'%s' is not a directory; to treat it as a directory anyway, rerun with --skip-checks"), argv[i]);
else
warning(_("pass a leading slash before paths such as '%s' if you want a single file (see NON-CONE PROBLEMS in the git-sparse-checkout manual)."), argv[i]);
}
}
static char const * const builtin_sparse_checkout_add_usage[] = {
N_("git sparse-checkout add [--skip-checks] (--stdin | <patterns>)"),
NULL
};
static struct sparse_checkout_add_opts {
int skip_checks;
int use_stdin;
} add_opts;
static int sparse_checkout_add(int argc, const char **argv, const char *prefix)
{
static struct option builtin_sparse_checkout_add_options[] = {
OPT_BOOL_F(0, "skip-checks", &add_opts.skip_checks,
N_("skip some sanity checks on the given paths that might give false positives"),
PARSE_OPT_NONEG),
OPT_BOOL(0, "stdin", &add_opts.use_stdin,
N_("read patterns from standard in")),
OPT_END(),
};
setup_work_tree();
if (!core_apply_sparse_checkout)
die(_("no sparse-checkout to add to"));
repo_read_index(the_repository);
argc = parse_options(argc, argv, prefix,
builtin_sparse_checkout_add_options,
builtin_sparse_checkout_add_usage, 0);
sanitize_paths(argc, argv, prefix, add_opts.skip_checks);
return modify_pattern_list(argc, argv, add_opts.use_stdin, ADD);
}
static char const * const builtin_sparse_checkout_set_usage[] = {
N_("git sparse-checkout set [--[no-]cone] [--[no-]sparse-index] [--skip-checks] (--stdin | <patterns>)"),
NULL
};
static struct sparse_checkout_set_opts {
int cone_mode;
int sparse_index;
int skip_checks;
int use_stdin;
} set_opts;
static int sparse_checkout_set(int argc, const char **argv, const char *prefix)
{
int default_patterns_nr = 2;
const char *default_patterns[] = {"/*", "!/*/", NULL};
static struct option builtin_sparse_checkout_set_options[] = {
OPT_BOOL(0, "cone", &set_opts.cone_mode,
N_("initialize the sparse-checkout in cone mode")),
OPT_BOOL(0, "sparse-index", &set_opts.sparse_index,
N_("toggle the use of a sparse index")),
OPT_BOOL_F(0, "skip-checks", &set_opts.skip_checks,
N_("skip some sanity checks on the given paths that might give false positives"),
PARSE_OPT_NONEG),
OPT_BOOL_F(0, "stdin", &set_opts.use_stdin,
N_("read patterns from standard in"),
PARSE_OPT_NONEG),
OPT_END(),
};
setup_work_tree();
repo_read_index(the_repository);
set_opts.cone_mode = -1;
set_opts.sparse_index = -1;
argc = parse_options(argc, argv, prefix,
builtin_sparse_checkout_set_options,
builtin_sparse_checkout_set_usage, 0);
if (update_modes(&set_opts.cone_mode, &set_opts.sparse_index))
return 1;
/*
* Cone mode automatically specifies the toplevel directory. For
* non-cone mode, if nothing is specified, manually select just the
* top-level directory (much as 'init' would do).
*/
if (!core_sparse_checkout_cone && !set_opts.use_stdin && argc == 0) {
argv = default_patterns;
argc = default_patterns_nr;
} else {
sanitize_paths(argc, argv, prefix, set_opts.skip_checks);
}
return modify_pattern_list(argc, argv, set_opts.use_stdin, REPLACE);
}
static char const * const builtin_sparse_checkout_reapply_usage[] = {
"git sparse-checkout reapply [--[no-]cone] [--[no-]sparse-index]",
NULL
};
static struct sparse_checkout_reapply_opts {
int cone_mode;
int sparse_index;
} reapply_opts;
static int sparse_checkout_reapply(int argc, const char **argv,
const char *prefix)
{
static struct option builtin_sparse_checkout_reapply_options[] = {
OPT_BOOL(0, "cone", &reapply_opts.cone_mode,
N_("initialize the sparse-checkout in cone mode")),
OPT_BOOL(0, "sparse-index", &reapply_opts.sparse_index,
N_("toggle the use of a sparse index")),
OPT_END(),
};
setup_work_tree();
if (!core_apply_sparse_checkout)
die(_("must be in a sparse-checkout to reapply sparsity patterns"));
reapply_opts.cone_mode = -1;
reapply_opts.sparse_index = -1;
argc = parse_options(argc, argv, prefix,
builtin_sparse_checkout_reapply_options,
builtin_sparse_checkout_reapply_usage, 0);
repo_read_index(the_repository);
if (update_modes(&reapply_opts.cone_mode, &reapply_opts.sparse_index))
return 1;
return update_working_directory(NULL);
}
static char const * const builtin_sparse_checkout_disable_usage[] = {
"git sparse-checkout disable",
NULL
};
static int sparse_checkout_disable(int argc, const char **argv,
const char *prefix)
{
static struct option builtin_sparse_checkout_disable_options[] = {
OPT_END(),
};
struct pattern_list pl;
/*
* We do not exit early if !core_apply_sparse_checkout; due to the
* ability for users to manually muck things up between
* direct editing of .git/info/sparse-checkout
* running read-tree -m u HEAD or update-index --skip-worktree
* direct toggling of config options
* users might end up with an index with SKIP_WORKTREE bit set on
* some files and not know how to undo it. So, here we just
* forcibly return to a dense checkout regardless of initial state.
*/
setup_work_tree();
argc = parse_options(argc, argv, prefix,
builtin_sparse_checkout_disable_options,
builtin_sparse_checkout_disable_usage, 0);
repo_read_index(the_repository);
memset(&pl, 0, sizeof(pl));
hashmap_init(&pl.recursive_hashmap, pl_hashmap_cmp, NULL, 0);
hashmap_init(&pl.parent_hashmap, pl_hashmap_cmp, NULL, 0);
pl.use_cone_patterns = 0;
core_apply_sparse_checkout = 1;
add_pattern("/*", empty_base, 0, &pl, 0);
prepare_repo_settings(the_repository);
the_repository->settings.sparse_index = 0;
if (update_working_directory(&pl))
die(_("error while refreshing working directory"));
clear_pattern_list(&pl);
return set_config(MODE_NO_PATTERNS);
}
static char const * const builtin_sparse_checkout_check_rules_usage[] = {
N_("git sparse-checkout check-rules [-z] [--skip-checks]"
"[--[no-]cone] [--rules-file <file>]"),
NULL
};
static struct sparse_checkout_check_rules_opts {
int cone_mode;
int null_termination;
char *rules_file;
} check_rules_opts;
static int check_rules(struct pattern_list *pl, int null_terminated) {
struct strbuf line = STRBUF_INIT;
struct strbuf unquoted = STRBUF_INIT;
char *path;
int line_terminator = null_terminated ? 0 : '\n';
strbuf_getline_fn getline_fn = null_terminated ? strbuf_getline_nul
: strbuf_getline;
the_repository->index->sparse_checkout_patterns = pl;
while (!getline_fn(&line, stdin)) {
path = line.buf;
if (!null_terminated && line.buf[0] == '"') {
strbuf_reset(&unquoted);
if (unquote_c_style(&unquoted, line.buf, NULL))
die(_("unable to unquote C-style string '%s'"),
line.buf);
path = unquoted.buf;
}
if (path_in_sparse_checkout(path, the_repository->index))
write_name_quoted(path, stdout, line_terminator);
}
strbuf_release(&line);
strbuf_release(&unquoted);
return 0;
}
static int sparse_checkout_check_rules(int argc, const char **argv, const char *prefix)
{
static struct option builtin_sparse_checkout_check_rules_options[] = {
OPT_BOOL('z', NULL, &check_rules_opts.null_termination,
N_("terminate input and output files by a NUL character")),
OPT_BOOL(0, "cone", &check_rules_opts.cone_mode,
N_("when used with --rules-file interpret patterns as cone mode patterns")),
OPT_FILENAME(0, "rules-file", &check_rules_opts.rules_file,
N_("use patterns in <file> instead of the current ones.")),
OPT_END(),
};
FILE *fp;
int ret;
struct pattern_list pl = {0};
char *sparse_filename;
check_rules_opts.cone_mode = -1;
argc = parse_options(argc, argv, prefix,
builtin_sparse_checkout_check_rules_options,
builtin_sparse_checkout_check_rules_usage, 0);
if (check_rules_opts.rules_file && check_rules_opts.cone_mode < 0)
check_rules_opts.cone_mode = 1;
update_cone_mode(&check_rules_opts.cone_mode);
pl.use_cone_patterns = core_sparse_checkout_cone;
if (check_rules_opts.rules_file) {
fp = xfopen(check_rules_opts.rules_file, "r");
add_patterns_from_input(&pl, argc, argv, fp);
fclose(fp);
} else {
sparse_filename = get_sparse_checkout_filename();
if (add_patterns_from_file_to_list(sparse_filename, "", 0, &pl,
NULL, 0))
die(_("unable to load existing sparse-checkout patterns"));
free(sparse_filename);
}
ret = check_rules(&pl, check_rules_opts.null_termination);
clear_pattern_list(&pl);
free(check_rules_opts.rules_file);
return ret;
}
int cmd_sparse_checkout(int argc, const char **argv, const char *prefix)
{
parse_opt_subcommand_fn *fn = NULL;
struct option builtin_sparse_checkout_options[] = {
OPT_SUBCOMMAND("list", &fn, sparse_checkout_list),
OPT_SUBCOMMAND("init", &fn, sparse_checkout_init),
OPT_SUBCOMMAND("set", &fn, sparse_checkout_set),
OPT_SUBCOMMAND("add", &fn, sparse_checkout_add),
OPT_SUBCOMMAND("reapply", &fn, sparse_checkout_reapply),
OPT_SUBCOMMAND("disable", &fn, sparse_checkout_disable),
OPT_SUBCOMMAND("check-rules", &fn, sparse_checkout_check_rules),
OPT_END(),
};
argc = parse_options(argc, argv, prefix,
builtin_sparse_checkout_options,
builtin_sparse_checkout_usage, 0);
git_config(git_default_config, NULL);
prepare_repo_settings(the_repository);
the_repository->settings.command_requires_full_index = 0;
return fn(argc, argv, prefix);
}
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