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#include "git-compat-util.h"
#include "abspath.h"
#include "chdir-notify.h"
#include "gettext.h"
#include "lockfile.h"
#include "object-file.h"
#include "odb.h"
#include "odb/source.h"
#include "odb/source-files.h"
#include "packfile.h"
#include "strbuf.h"
#include "write-or-die.h"
static void odb_source_files_reparent(const char *name UNUSED,
const char *old_cwd,
const char *new_cwd,
void *cb_data)
{
struct odb_source_files *files = cb_data;
char *path = reparent_relative_path(old_cwd, new_cwd,
files->base.path);
free(files->base.path);
files->base.path = path;
}
static void odb_source_files_free(struct odb_source *source)
{
struct odb_source_files *files = odb_source_files_downcast(source);
chdir_notify_unregister(NULL, odb_source_files_reparent, files);
odb_source_loose_free(files->loose);
packfile_store_free(files->packed);
odb_source_release(&files->base);
free(files);
}
static void odb_source_files_close(struct odb_source *source)
{
struct odb_source_files *files = odb_source_files_downcast(source);
packfile_store_close(files->packed);
}
static void odb_source_files_reprepare(struct odb_source *source)
{
struct odb_source_files *files = odb_source_files_downcast(source);
odb_source_loose_reprepare(&files->base);
packfile_store_reprepare(files->packed);
}
static int odb_source_files_read_object_info(struct odb_source *source,
const struct object_id *oid,
struct object_info *oi,
enum object_info_flags flags)
{
struct odb_source_files *files = odb_source_files_downcast(source);
if (!packfile_store_read_object_info(files->packed, oid, oi, flags) ||
!odb_source_loose_read_object_info(source, oid, oi, flags))
return 0;
return -1;
}
static int odb_source_files_read_object_stream(struct odb_read_stream **out,
struct odb_source *source,
const struct object_id *oid)
{
struct odb_source_files *files = odb_source_files_downcast(source);
if (!packfile_store_read_object_stream(out, files->packed, oid) ||
!odb_source_loose_read_object_stream(out, source, oid))
return 0;
return -1;
}
static int odb_source_files_for_each_object(struct odb_source *source,
const struct object_info *request,
odb_for_each_object_cb cb,
void *cb_data,
unsigned flags)
{
struct odb_source_files *files = odb_source_files_downcast(source);
int ret;
if (!(flags & ODB_FOR_EACH_OBJECT_PROMISOR_ONLY)) {
ret = odb_source_loose_for_each_object(source, request, cb, cb_data, flags);
if (ret)
return ret;
}
ret = packfile_store_for_each_object(files->packed, request, cb, cb_data, flags);
if (ret)
return ret;
return 0;
}
static int odb_source_files_freshen_object(struct odb_source *source,
const struct object_id *oid)
{
struct odb_source_files *files = odb_source_files_downcast(source);
if (packfile_store_freshen_object(files->packed, oid) ||
odb_source_loose_freshen_object(source, oid))
return 1;
return 0;
}
static int odb_source_files_write_object(struct odb_source *source,
const void *buf, unsigned long len,
enum object_type type,
struct object_id *oid,
struct object_id *compat_oid,
unsigned flags)
{
return odb_source_loose_write_object(source, buf, len, type,
oid, compat_oid, flags);
}
static int odb_source_files_write_object_stream(struct odb_source *source,
struct odb_write_stream *stream,
size_t len,
struct object_id *oid)
{
return odb_source_loose_write_stream(source, stream, len, oid);
}
static int odb_source_files_begin_transaction(struct odb_source *source,
struct odb_transaction **out)
{
struct odb_transaction *tx = odb_transaction_files_begin(source);
if (!tx)
return -1;
*out = tx;
return 0;
}
static int odb_source_files_read_alternates(struct odb_source *source,
struct strvec *out)
{
struct strbuf buf = STRBUF_INIT;
char *path;
path = xstrfmt("%s/info/alternates", source->path);
if (strbuf_read_file(&buf, path, 1024) < 0) {
warn_on_fopen_errors(path);
free(path);
return 0;
}
parse_alternates(buf.buf, '\n', source->path, out);
strbuf_release(&buf);
free(path);
return 0;
}
static int odb_source_files_write_alternate(struct odb_source *source,
const char *alternate)
{
struct lock_file lock = LOCK_INIT;
char *path = xstrfmt("%s/%s", source->path, "info/alternates");
FILE *in, *out;
int found = 0;
int ret;
hold_lock_file_for_update(&lock, path, LOCK_DIE_ON_ERROR);
out = fdopen_lock_file(&lock, "w");
if (!out) {
ret = error_errno(_("unable to fdopen alternates lockfile"));
goto out;
}
in = fopen(path, "r");
if (in) {
struct strbuf line = STRBUF_INIT;
while (strbuf_getline(&line, in) != EOF) {
if (!strcmp(alternate, line.buf)) {
found = 1;
break;
}
fprintf_or_die(out, "%s\n", line.buf);
}
strbuf_release(&line);
fclose(in);
} else if (errno != ENOENT) {
ret = error_errno(_("unable to read alternates file"));
goto out;
}
if (found) {
rollback_lock_file(&lock);
} else {
fprintf_or_die(out, "%s\n", alternate);
if (commit_lock_file(&lock)) {
ret = error_errno(_("unable to move new alternates file into place"));
goto out;
}
}
ret = 0;
out:
free(path);
return ret;
}
struct odb_source_files *odb_source_files_new(struct object_database *odb,
const char *path,
bool local)
{
struct odb_source_files *files;
CALLOC_ARRAY(files, 1);
odb_source_init(&files->base, odb, ODB_SOURCE_FILES, path, local);
files->loose = odb_source_loose_new(&files->base);
files->packed = packfile_store_new(&files->base);
files->base.free = odb_source_files_free;
files->base.close = odb_source_files_close;
files->base.reprepare = odb_source_files_reprepare;
files->base.read_object_info = odb_source_files_read_object_info;
files->base.read_object_stream = odb_source_files_read_object_stream;
files->base.for_each_object = odb_source_files_for_each_object;
files->base.freshen_object = odb_source_files_freshen_object;
files->base.write_object = odb_source_files_write_object;
files->base.write_object_stream = odb_source_files_write_object_stream;
files->base.begin_transaction = odb_source_files_begin_transaction;
files->base.read_alternates = odb_source_files_read_alternates;
files->base.write_alternate = odb_source_files_write_alternate;
/*
* Ideally, we would only ever store absolute paths in the source. This
* is not (yet) possible though because we access and assume relative
* paths in the primary ODB source in some user-facing functionality.
*/
if (!is_absolute_path(path))
chdir_notify_register(NULL, odb_source_files_reparent, files);
return files;
}
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