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reftable: generic interface to tables

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Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Han-Wen Nienhuys
2021-10-07 20:25:07 +00:00
committed by Junio C Hamano
parent f14bd71934
commit 17df8dbeba
6 changed files with 405 additions and 0 deletions
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reftable/reftable-iterator.h Normal file
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/*
Copyright 2020 Google LLC
Use of this source code is governed by a BSD-style
license that can be found in the LICENSE file or at
https://developers.google.com/open-source/licenses/bsd
*/
#ifndef REFTABLE_ITERATOR_H
#define REFTABLE_ITERATOR_H
#include "reftable-record.h"
struct reftable_iterator_vtable;
/* iterator is the generic interface for walking over data stored in a
* reftable.
*/
struct reftable_iterator {
struct reftable_iterator_vtable *ops;
void *iter_arg;
};
/* reads the next reftable_ref_record. Returns < 0 for error, 0 for OK and > 0:
* end of iteration.
*/
int reftable_iterator_next_ref(struct reftable_iterator *it,
struct reftable_ref_record *ref);
/* reads the next reftable_log_record. Returns < 0 for error, 0 for OK and > 0:
* end of iteration.
*/
int reftable_iterator_next_log(struct reftable_iterator *it,
struct reftable_log_record *log);
/* releases resources associated with an iterator. */
void reftable_iterator_destroy(struct reftable_iterator *it);
#endif