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/* noderevs.h --- FSX node revision container
*
* ====================================================================
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
* ====================================================================
*/
#ifndef SVN_LIBSVN_FS_X_NODEREVS_H
#define SVN_LIBSVN_FS_X_NODEREVS_H
#include "svn_io.h"
#include "fs.h"
/* A collection of related noderevs tends to be widely redundant (similar
* paths, predecessor ID matching anothers ID, shared representations etc.)
* Also, the binary representation of a noderev can be much shorter than
* the ordinary textual variant.
*
* In its serialized form, the svn_fs_x__noderevs_t container extracts
* most of that redundancy and the run-time representation is also much
* smaller than sum of the respective svn_fs_x__noderev_t objects.
*
* As with other containers, this one has two modes: 'construction', in
* which you may add data to it, and 'getter' in which there is only r/o
* access to the data.
*/
/* An opaque collection of node revisions.
*/
typedef struct svn_fs_x__noderevs_t svn_fs_x__noderevs_t;
/* Create and populate noderev containers. */
/* Create and return a new noderevs container with an initial capacity of
* INITIAL_COUNT svn_fs_x__noderev_t objects.
* Allocate the result in RESULT_POOL.
*/
svn_fs_x__noderevs_t *
svn_fs_x__noderevs_create(int initial_count,
apr_pool_t *result_pool);
/* Add NODEREV to the CONTAINER. Return the index that identifies the new
* item in this container.
*/
apr_size_t
svn_fs_x__noderevs_add(svn_fs_x__noderevs_t *container,
svn_fs_x__noderev_t *noderev);
/* Return a rough estimate in bytes for the serialized representation
* of CONTAINER.
*/
apr_size_t
svn_fs_x__noderevs_estimate_size(const svn_fs_x__noderevs_t *container);
/* Read from noderev containers. */
/* From CONTAINER, extract the noderev with the given IDX. Allocate
* the result in POOL and return it in *NODEREV_P.
*/
svn_error_t *
svn_fs_x__noderevs_get(svn_fs_x__noderev_t **noderev_p,
const svn_fs_x__noderevs_t *container,
apr_size_t idx,
apr_pool_t *result_pool);
/* I/O interface. */
/* Write a serialized representation of CONTAINER to STREAM.
* Use SCRATCH_POOL for temporary allocations.
*/
svn_error_t *
svn_fs_x__write_noderevs_container(svn_stream_t *stream,
const svn_fs_x__noderevs_t *container,
apr_pool_t *scratch_pool);
/* Read a noderev container from its serialized representation in STREAM.
* Allocate the result in RESULT_POOL and return it in *CONTAINER. Use
* SCRATCH_POOL for temporary allocations.
*/
svn_error_t *
svn_fs_x__read_noderevs_container(svn_fs_x__noderevs_t **container,
svn_stream_t *stream,
apr_pool_t *result_pool,
apr_pool_t *scratch_pool);
/* Implements #svn_cache__serialize_func_t for svn_fs_x__noderevs_t
* objects.
*/
svn_error_t *
svn_fs_x__serialize_noderevs_container(void **data,
apr_size_t *data_len,
void *in,
apr_pool_t *pool);
/* Implements #svn_cache__deserialize_func_t for svn_fs_x__noderevs_t
* objects.
*/
svn_error_t *
svn_fs_x__deserialize_noderevs_container(void **out,
void *data,
apr_size_t data_len,
apr_pool_t *result_pool);
/* Implements svn_cache__partial_getter_func_t for svn_fs_x__noderevs_t,
* setting *OUT to the svn_fs_x__noderev_t selected by the apr_uint32_t index
* passed in as *BATON. This function is similar to svn_fs_x__noderevs_get
* but operates on the cache serialized representation of the container.
*/
svn_error_t *
svn_fs_x__noderevs_get_func(void **out,
const void *data,
apr_size_t data_len,
void *baton,
apr_pool_t *pool);
/* Implements svn_cache__partial_getter_func_t for the mergeinfo_count in
* the stored noderevs, setting *OUT to the apr_int64_t counter value of
* the noderev selected by the apr_uint32_t index passed in as *BATON.
*/
svn_error_t *
svn_fs_x__mergeinfo_count_get_func(void **out,
const void *data,
apr_size_t data_len,
void *baton,
apr_pool_t *pool);
#endif
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