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| author |  Han-Wen Nienhuys <hanwen@google.com> | 2021-10-07 20:25:07 +0000 |
|---|---|---|
| committer |  Junio C Hamano <gitster@pobox.com> | 2021-10-08 10:45:48 -0700 |
| commit | 17df8dbeba18c8c36f14c58815a03091ba61f895 (patch) | |
| tree | 63dbbfc6297322f47ad56b333becfac5ff31944e /reftable/reftable-generic.h | |
| parent | reftable: write reftable files (diff) | |
| download | tgif-17df8dbeba18c8c36f14c58815a03091ba61f895.tar.xz | |
reftable: generic interface to tables
Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'reftable/reftable-generic.h')
| -rw-r--r-- | reftable/reftable-generic.h | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/reftable/reftable-generic.h b/reftable/reftable-generic.h new file mode 100644 index 0000000000..d239751a77 --- /dev/null +++ b/reftable/reftable-generic.h @@ -0,0 +1,47 @@ +/* +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_GENERIC_H +#define REFTABLE_GENERIC_H + +#include "reftable-iterator.h" + +struct reftable_table_vtable; + +/* + * Provides a unified API for reading tables, either merged tables, or single + * readers. */ +struct reftable_table { + struct reftable_table_vtable *ops; + void *table_arg; +}; + +int reftable_table_seek_log(struct reftable_table *tab, + struct reftable_iterator *it, const char *name); + +int reftable_table_seek_ref(struct reftable_table *tab, + struct reftable_iterator *it, const char *name); + +/* returns the hash ID from a generic reftable_table */ +uint32_t reftable_table_hash_id(struct reftable_table *tab); + +/* returns the max update_index covered by this table. */ +uint64_t reftable_table_max_update_index(struct reftable_table *tab); + +/* returns the min update_index covered by this table. */ +uint64_t reftable_table_min_update_index(struct reftable_table *tab); + +/* convenience function to read a single ref. Returns < 0 for error, 0 + for success, and 1 if ref not found. */ +int reftable_table_read_ref(struct reftable_table *tab, const char *name, + struct reftable_ref_record *ref); + +/* dump table contents onto stdout for debugging */ +int reftable_table_print(struct reftable_table *tab); + +#endif |