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git/builtin/sparse-checkout.c

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#include "builtin.h"
#include "config.h"
#include "dir.h"
#include "parse-options.h"
#include "pathspec.h"
#include "repository.h"
#include "run-command.h"
#include "strbuf.h"
#include "string-list.h"
#include "cache.h"
#include "cache-tree.h"
#include "lockfile.h"
#include "resolve-undo.h"
#include "unpack-trees.h"
#include "wt-status.h"
static const char *empty_base = "";
static char const * const builtin_sparse_checkout_usage[] = {
N_("git sparse-checkout (init|list|set|disable) <options>"),
NULL
};
static char *get_sparse_checkout_filename(void)
{
return git_pathdup("info/sparse-checkout");
}
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 int sparse_checkout_list(int argc, const char **argv)
{
struct pattern_list pl;
char *sparse_filename;
int res;
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);
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++)
printf("%s\n", sl.items[i].string);
return 0;
}
write_patterns_to_file(stdout, &pl);
clear_pattern_list(&pl);
return 0;
}
static int update_working_directory(struct pattern_list *pl)
{
int result = 0;
struct unpack_trees_options o;
struct lock_file lock_file = LOCK_INIT;
struct object_id oid;
struct tree *tree;
struct tree_desc t;
struct repository *r = the_repository;
if (repo_read_index_unmerged(r))
die(_("you need to resolve your current index first"));
if (get_oid("HEAD", &oid))
return 0;
tree = parse_tree_indirect(&oid);
parse_tree(tree);
init_tree_desc(&t, tree->buffer, tree->size);
memset(&o, 0, sizeof(o));
o.verbose_update = isatty(2);
o.merge = 1;
o.update = 1;
o.fn = oneway_merge;
o.head_idx = -1;
o.src_index = r->index;
o.dst_index = r->index;
o.skip_sparse_checkout = 0;
o.pl = pl;
o.keep_pattern_list = !!pl;
resolve_undo_clear_index(r->index);
setup_work_tree();
cache_tree_free(&r->index->cache_tree);
repo_hold_locked_index(r, &lock_file, LOCK_DIE_ON_ERROR);
core_apply_sparse_checkout = 1;
result = unpack_trees(1, &t, &o);
if (!result) {
prime_cache_tree(r, r->index, tree);
write_locked_index(r->index, &lock_file, COMMIT_LOCK);
} else
rollback_lock_file(&lock_file);
return result;
}
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 = sl.items[i].string;
if (strlen(pattern))
fprintf(fp, "%s/\n!%s/*/\n", pattern, 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 = sl.items[i].string;
fprintf(fp, "%s/\n", pattern);
}
}
static int write_patterns_and_update(struct pattern_list *pl)
{
char *sparse_filename;
FILE *fp;
int fd;
struct lock_file lk = LOCK_INIT;
int result;
sparse_filename = get_sparse_checkout_filename();
fd = hold_lock_file_for_update(&lk, sparse_filename,
LOCK_DIE_ON_ERROR);
result = update_working_directory(pl);
if (result) {
rollback_lock_file(&lk);
free(sparse_filename);
clear_pattern_list(pl);
update_working_directory(NULL);
return result;
}
fp = xfdopen(fd, "w");
if (core_sparse_checkout_cone)
write_cone_to_file(fp, pl);
else
write_patterns_to_file(fp, pl);
fflush(fp);
commit_lock_file(&lk);
free(sparse_filename);
clear_pattern_list(pl);
return 0;
}
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)
{
const char *config_path;
if (git_config_set_gently("extensions.worktreeConfig", "true")) {
error(_("failed to set extensions.worktreeConfig setting"));
return 1;
}
config_path = git_path("config.worktree");
git_config_set_in_file_gently(config_path,
"core.sparseCheckout",
mode ? "true" : NULL);
git_config_set_in_file_gently(config_path,
"core.sparseCheckoutCone",
mode == MODE_CONE_PATTERNS ? "true" : NULL);
return 0;
}
static char const * const builtin_sparse_checkout_init_usage[] = {
N_("git sparse-checkout init [--cone]"),
NULL
};
static struct sparse_checkout_init_opts {
int cone_mode;
} init_opts;
static int sparse_checkout_init(int argc, const char **argv)
{
struct pattern_list pl;
char *sparse_filename;
int res;
struct object_id oid;
int mode;
struct strbuf pattern = STRBUF_INIT;
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_END(),
};
repo_read_index(the_repository);
require_clean_work_tree(the_repository,
N_("initialize sparse-checkout"), NULL, 1, 0);
argc = parse_options(argc, argv, NULL,
builtin_sparse_checkout_init_options,
builtin_sparse_checkout_init_usage, 0);
if (init_opts.cone_mode) {
mode = MODE_CONE_PATTERNS;
core_sparse_checkout_cone = 1;
} else
mode = MODE_ALL_PATTERNS;
if (set_config(mode))
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);
/* If we already have a sparse-checkout file, use it. */
if (res >= 0) {
free(sparse_filename);
core_apply_sparse_checkout = 1;
return update_working_directory(NULL);
}
if (get_oid("HEAD", &oid)) {
FILE *fp;
/* assume we are in a fresh repo, but update the sparse-checkout file */
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;
}
strbuf_addstr(&pattern, "/*");
add_pattern(strbuf_detach(&pattern, NULL), empty_base, 0, &pl, 0);
strbuf_addstr(&pattern, "!/*/");
add_pattern(strbuf_detach(&pattern, NULL), empty_base, 0, &pl, 0);
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,
ignore_case ?
strihash(e->pattern) :
strhash(e->pattern));
hashmap_add(&pl->recursive_hashmap, &e->ent);
while (e->patternlen) {
char *slash = strrchr(e->pattern, '/');
char *oldpattern = e->pattern;
size_t newlen;
if (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,
ignore_case ?
strihash(e->pattern) :
strhash(e->pattern));
if (!hashmap_get_entry(&pl->parent_hashmap, e, ent, NULL))
hashmap_add(&pl->parent_hashmap, &e->ent);
}
}
static void strbuf_to_cone_pattern(struct strbuf *line, struct pattern_list *pl)
{
strbuf_trim(line);
strbuf_trim_trailing_dir_sep(line);
if (!line->len)
return;
if (line->buf[0] != '/')
strbuf_insert(line, 0, "/", 1);
insert_recursive_pattern(pl, line);
}
static char const * const builtin_sparse_checkout_set_usage[] = {
N_("git sparse-checkout set (--stdin | <patterns>)"),
NULL
};
static struct sparse_checkout_set_opts {
int use_stdin;
} set_opts;
static int sparse_checkout_set(int argc, const char **argv, const char *prefix)
{
int i;
struct pattern_list pl;
int result;
int changed_config = 0;
static struct option builtin_sparse_checkout_set_options[] = {
OPT_BOOL(0, "stdin", &set_opts.use_stdin,
N_("read patterns from standard in")),
OPT_END(),
};
repo_read_index(the_repository);
require_clean_work_tree(the_repository,
N_("set sparse-checkout patterns"), NULL, 1, 0);
memset(&pl, 0, sizeof(pl));
argc = parse_options(argc, argv, prefix,
builtin_sparse_checkout_set_options,
builtin_sparse_checkout_set_usage,
PARSE_OPT_KEEP_UNKNOWN);
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 (set_opts.use_stdin) {
while (!strbuf_getline(&line, stdin))
strbuf_to_cone_pattern(&line, &pl);
} else {
for (i = 0; i < argc; i++) {
strbuf_setlen(&line, 0);
strbuf_addstr(&line, argv[i]);
strbuf_to_cone_pattern(&line, &pl);
}
}
} else {
if (set_opts.use_stdin) {
struct strbuf line = STRBUF_INIT;
while (!strbuf_getline(&line, stdin)) {
size_t len;
char *buf = strbuf_detach(&line, &len);
add_pattern(buf, empty_base, 0, &pl, 0);
}
} else {
for (i = 0; i < argc; i++)
add_pattern(argv[i], empty_base, 0, &pl, 0);
}
}
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);
return result;
}
static int sparse_checkout_disable(int argc, const char **argv)
{
struct pattern_list pl;
struct strbuf match_all = STRBUF_INIT;
repo_read_index(the_repository);
require_clean_work_tree(the_repository,
N_("disable sparse-checkout"), NULL, 1, 0);
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;
strbuf_addstr(&match_all, "/*");
add_pattern(strbuf_detach(&match_all, NULL), empty_base, 0, &pl, 0);
if (update_working_directory(&pl))
die(_("error while refreshing working directory"));
clear_pattern_list(&pl);
return set_config(MODE_NO_PATTERNS);
}
int cmd_sparse_checkout(int argc, const char **argv, const char *prefix)
{
static struct option builtin_sparse_checkout_options[] = {
OPT_END(),
};
if (argc == 2 && !strcmp(argv[1], "-h"))
usage_with_options(builtin_sparse_checkout_usage,
builtin_sparse_checkout_options);
argc = parse_options(argc, argv, prefix,
builtin_sparse_checkout_options,
builtin_sparse_checkout_usage,
PARSE_OPT_STOP_AT_NON_OPTION);
git_config(git_default_config, NULL);
if (argc > 0) {
if (!strcmp(argv[0], "list"))
return sparse_checkout_list(argc, argv);
if (!strcmp(argv[0], "init"))
return sparse_checkout_init(argc, argv);
if (!strcmp(argv[0], "set"))
return sparse_checkout_set(argc, argv, prefix);
if (!strcmp(argv[0], "disable"))
return sparse_checkout_disable(argc, argv);
}
usage_with_options(builtin_sparse_checkout_usage,
builtin_sparse_checkout_options);
}
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