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8380b39a67
Hash the data as it's coming into the stream and tell the backend what its name is when finalizing the write. This makes it consistent with the way a plain git_odb_write() performs the write.
94 lines
2.6 KiB
C
94 lines
2.6 KiB
C
/*
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* Copyright (C) the libgit2 contributors. All rights reserved.
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*
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* This file is part of libgit2, distributed under the GNU GPL v2 with
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* a Linking Exception. For full terms see the included COPYING file.
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*/
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#ifndef INCLUDE_git_odb_backend_h__
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#define INCLUDE_git_odb_backend_h__
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#include "git2/common.h"
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#include "git2/types.h"
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/**
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* @file git2/backend.h
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* @brief Git custom backend functions
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* @defgroup git_odb Git object database routines
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* @ingroup Git
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* @{
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*/
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GIT_BEGIN_DECL
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/*
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* Constructors for in-box ODB backends.
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*/
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/**
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* Create a backend for the packfiles.
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*
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* @param out location to store the odb backend pointer
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* @param objects_dir the Git repository's objects directory
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*
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* @return 0 or an error code
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*/
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GIT_EXTERN(int) git_odb_backend_pack(git_odb_backend **out, const char *objects_dir);
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/**
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* Create a backend for loose objects
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*
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* @param out location to store the odb backend pointer
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* @param objects_dir the Git repository's objects directory
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* @param compression_level zlib compression level to use
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* @param do_fsync whether to do an fsync() after writing (currently ignored)
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*
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* @return 0 or an error code
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*/
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GIT_EXTERN(int) git_odb_backend_loose(git_odb_backend **out, const char *objects_dir, int compression_level, int do_fsync);
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/**
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* Create a backend out of a single packfile
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*
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* This can be useful for inspecting the contents of a single
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* packfile.
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*
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* @param out location to store the odb backend pointer
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* @param index_file path to the packfile's .idx file
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*
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* @return 0 or an error code
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*/
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GIT_EXTERN(int) git_odb_backend_one_pack(git_odb_backend **out, const char *index_file);
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/** Streaming mode */
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typedef enum {
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GIT_STREAM_RDONLY = (1 << 1),
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GIT_STREAM_WRONLY = (1 << 2),
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GIT_STREAM_RW = (GIT_STREAM_RDONLY | GIT_STREAM_WRONLY),
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} git_odb_stream_t;
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typedef struct git_hash_ctx git_hash_ctx;
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/** A stream to read/write from a backend */
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struct git_odb_stream {
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git_odb_backend *backend;
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unsigned int mode;
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git_hash_ctx *hash_ctx;
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int (*read)(git_odb_stream *stream, char *buffer, size_t len);
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int (*write)(git_odb_stream *stream, const char *buffer, size_t len);
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int (*finalize_write)(git_oid *oid_p, git_odb_stream *stream);
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void (*free)(git_odb_stream *stream);
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};
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/** A stream to write a pack file to the ODB */
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struct git_odb_writepack {
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git_odb_backend *backend;
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int (*add)(git_odb_writepack *writepack, const void *data, size_t size, git_transfer_progress *stats);
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int (*commit)(git_odb_writepack *writepack, git_transfer_progress *stats);
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void (*free)(git_odb_writepack *writepack);
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};
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GIT_END_DECL
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#endif
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