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69 lines
1.8 KiB
69 lines
1.8 KiB
/* |
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Copyright 2020 Google LLC |
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Use of this source code is governed by a BSD-style |
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license that can be found in the LICENSE file or at |
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https://developers.google.com/open-source/licenses/bsd |
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*/ |
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#ifndef ITER_H |
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#define ITER_H |
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#include "system.h" |
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#include "block.h" |
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#include "record.h" |
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#include "reftable-iterator.h" |
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#include "reftable-generic.h" |
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/* Returns true for a zeroed out iterator, such as the one returned from |
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* iterator_destroy. */ |
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int iterator_is_null(struct reftable_iterator *it); |
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/* iterator that produces only ref records that point to `oid` */ |
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struct filtering_ref_iterator { |
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int double_check; |
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struct reftable_table tab; |
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struct strbuf oid; |
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struct reftable_iterator it; |
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}; |
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#define FILTERING_REF_ITERATOR_INIT \ |
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{ \ |
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.oid = STRBUF_INIT \ |
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} |
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void iterator_from_filtering_ref_iterator(struct reftable_iterator *, |
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struct filtering_ref_iterator *); |
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/* iterator that produces only ref records that point to `oid`, |
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* but using the object index. |
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*/ |
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struct indexed_table_ref_iter { |
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struct reftable_reader *r; |
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struct strbuf oid; |
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/* mutable */ |
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uint64_t *offsets; |
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/* Points to the next offset to read. */ |
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int offset_idx; |
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int offset_len; |
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struct block_reader block_reader; |
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struct block_iter cur; |
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int is_finished; |
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}; |
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#define INDEXED_TABLE_REF_ITER_INIT \ |
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{ \ |
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.cur = { .last_key = STRBUF_INIT }, .oid = STRBUF_INIT, \ |
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} |
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void iterator_from_indexed_table_ref_iter(struct reftable_iterator *it, |
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struct indexed_table_ref_iter *itr); |
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/* Takes ownership of `offsets` */ |
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int new_indexed_table_ref_iter(struct indexed_table_ref_iter **dest, |
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struct reftable_reader *r, uint8_t *oid, |
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int oid_len, uint64_t *offsets, int offset_len); |
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#endif
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