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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"
static char const * const builtin_sparse_checkout_usage[] = {
N_("git sparse-checkout (init|list|set) <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));
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;
}
write_patterns_to_file(stdout, &pl);
clear_pattern_list(&pl);
return 0;
}
static int update_working_directory(void)
{
struct argv_array argv = ARGV_ARRAY_INIT;
int result = 0;
argv_array_pushl(&argv, "read-tree", "-m", "-u", "HEAD", NULL);
if (run_command_v_opt(argv.argv, RUN_GIT_CMD)) {
error(_("failed to update index with new sparse-checkout patterns"));
result = 1;
}
argv_array_clear(&argv);
return result;
}
enum sparse_checkout_mode {
MODE_NO_PATTERNS = 0,
MODE_ALL_PATTERNS = 1,
};
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);
return 0;
}
static int sparse_checkout_init(int argc, const char **argv)
{
struct pattern_list pl;
char *sparse_filename;
FILE *fp;
int res;
struct object_id oid;
if (set_config(MODE_ALL_PATTERNS))
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);
goto reset_dir;
}
/* initial mode: all blobs at root */
fp = xfopen(sparse_filename, "w");
if (!fp)
die(_("failed to open '%s'"), sparse_filename);
free(sparse_filename);
fprintf(fp, "/*\n!/*/\n");
fclose(fp);
if (get_oid("HEAD", &oid)) {
/* assume we are in a fresh repo */
return 0;
}
reset_dir:
return update_working_directory();
}
static int write_patterns_and_update(struct pattern_list *pl)
{
char *sparse_filename;
FILE *fp;
sparse_filename = get_sparse_checkout_filename();
fp = fopen(sparse_filename, "w");
write_patterns_to_file(fp, pl);
fclose(fp);
free(sparse_filename);
return update_working_directory();
}
static int sparse_checkout_set(int argc, const char **argv, const char *prefix)
{
static const char *empty_base = "";
int i;
struct pattern_list pl;
int result;
int changed_config = 0;
memset(&pl, 0, sizeof(pl));
for (i = 1; 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;
}
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);
}
usage_with_options(builtin_sparse_checkout_usage,
builtin_sparse_checkout_options);
}
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