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  • Hash : 72a3fe42
    Author : Vicent Marti
    Date : 2011-03-18T19:38:49

    I broke your bindings Hey. Apologies in advance -- I broke your bindings. This is a major commit that includes a long-overdue redesign of the whole object-database structure. This is expected to be the last major external API redesign of the library until the first non-alpha release. Please get your bindings up to date with these changes. They will be included in the next minor release. Sorry again! Major features include: - Real caching and refcounting on parsed objects - Real caching and refcounting on objects read from the ODB - Streaming writes & reads from the ODB - Single-method writes for all object types - The external API is now partially thread-safe The speed increases are significant in all aspects, specially when reading an object several times from the ODB (revwalking) and when writing big objects to the ODB. Here's a full changelog for the external API: blob.h ------ - Remove `git_blob_new` - Remove `git_blob_set_rawcontent` - Remove `git_blob_set_rawcontent_fromfile` - Rename `git_blob_writefile` -> `git_blob_create_fromfile` - Change `git_blob_create_fromfile`: The `path` argument is now relative to the repository's working dir - Add `git_blob_create_frombuffer` commit.h -------- - Remove `git_commit_new` - Remove `git_commit_add_parent` - Remove `git_commit_set_message` - Remove `git_commit_set_committer` - Remove `git_commit_set_author` - Remove `git_commit_set_tree` - Add `git_commit_create` - Add `git_commit_create_v` - Add `git_commit_create_o` - Add `git_commit_create_ov` tag.h ----- - Remove `git_tag_new` - Remove `git_tag_set_target` - Remove `git_tag_set_name` - Remove `git_tag_set_tagger` - Remove `git_tag_set_message` - Add `git_tag_create` - Add `git_tag_create_o` tree.h ------ - Change `git_tree_entry_2object`: New signature is `(git_object **object_out, git_repository *repo, git_tree_entry *entry)` - Remove `git_tree_new` - Remove `git_tree_add_entry` - Remove `git_tree_remove_entry_byindex` - Remove `git_tree_remove_entry_byname` - Remove `git_tree_clearentries` - Remove `git_tree_entry_set_id` - Remove `git_tree_entry_set_name` - Remove `git_tree_entry_set_attributes` object.h ------------ - Remove `git_object_new - Remove `git_object_write` - Change `git_object_close`: This method is now *mandatory*. Not closing an object causes a memory leak. odb.h ----- - Remove type `git_rawobj` - Remove `git_rawobj_close` - Rename `git_rawobj_hash` -> `git_odb_hash` - Change `git_odb_hash`: New signature is `(git_oid *id, const void *data, size_t len, git_otype type)` - Add type `git_odb_object` - Add `git_odb_object_close` - Change `git_odb_read`: New signature is `(git_odb_object **out, git_odb *db, const git_oid *id)` - Change `git_odb_read_header`: New signature is `(size_t *len_p, git_otype *type_p, git_odb *db, const git_oid *id)` - Remove `git_odb_write` - Add `git_odb_open_wstream` - Add `git_odb_open_rstream` odb_backend.h ------------- - Change type `git_odb_backend`: New internal signatures are as follows int (* read)(void **, size_t *, git_otype *, struct git_odb_backend *, const git_oid *) int (* read_header)(size_t *, git_otype *, struct git_odb_backend *, const git_oid *) int (* writestream)(struct git_odb_stream **, struct git_odb_backend *, size_t, git_otype) int (* readstream)( struct git_odb_stream **, struct git_odb_backend *, const git_oid *) - Add type `git_odb_stream` - Add enum `git_odb_streammode` Signed-off-by: Vicent Marti <tanoku@gmail.com>

  • README.md

  • libgit2 - the Git linkable library

    libgit2 is a portable, pure C implementation of the Git core methods provided as a re-entrant linkable library with a solid API, allowing you to write native speed custom Git applications in any language with bindings.

    libgit2 is licensed under a very permissive license (GPLv2 with a special Linking Exception). This basically means that you can link it (unmodified) with any kind of software without having to release its source code.

    What It Can Do

    libgit2 is already very usable.

    • SHA conversions, formatting and shortening
    • object reading (loose and packed)
    • object writing (loose)
    • commit, tag, tree and blob parsing and write-back
    • tree traversal
    • revision walking
    • index file (staging area) manipulation
    • custom ODB backends
    • reference management (including packed references)
    • …and more

    Building libgit2 - External dependencies

    libgit2 builds cleanly on most platforms without any external dependencies. Under Unix-like systems, like Linux, *BSD and Mac OS X, libgit2 expects pthreads to be available; they should be installed by default on all systems. Under Windows, libgit2 uses the native Windows API for threading.

    Additionally, he following libraries may be used as replacement for built-in functionality:

    libgit2 can be built using the SHA1 implementation of LibSSL-Crypto, instead of the built-in custom implementations. Performance wise, they are quite similar.

    Building libgit2 - Using waf

    Waf is a minimalist build system which only requires a Python 2.5+ interpreter to run. This is the default build system for libgit2.

    To build libgit2 using waf, first configure the build system by running:

    $ ./waf configure

    Then build the library, either in its shared (libgit2.so) or static form (libgit2.a):

    $ ./waf build-static
    $ ./waf build-shared

    You can then run the full test suite with:

    $ ./waf test

    And finally you can install the library with (you may need to sudo):

    $ sudo ./waf install

    The waf build system for libgit2 accepts the following flags:

    --debug
        build the library with debug symbols.
        Defaults to off.
    
    --sha1=[builtin|ppc|openssl]
        use the builtin SHA1 functions, the optimized PPC versions
        or the SHA1 functions from LibCrypto (OpenSSL).
        Defaults to 'builtin'.
    
    --msvc=[7.1|8.0|9.0|10.0]
        Force a specific version of the MSVC compiler, if more than
        one version is installed.
    
    --arch=[ia64|x64|x86|x86_amd64|x86_ia64]
        Force a specific architecture for compilers that support it.
    
    --without-sqlite
        Disable sqlite support.

    You can run ./waf --help to see a full list of install options and targets.

    Building libgit2 - Using CMake

    The libgit2 library can also be built using CMake 2.6+ (http://www.cmake.org) on all platforms.

    On most systems you can build the library using the following commands

    $ mkdir build && cd build
    $ cmake ..
    $ cmake --build .

    Alternatively you can point the CMake GUI tool to the CMakeLists.txt file and generate platform specific build project or IDE workspace.

    To install the library you can specify the install prefix by setting:

    $ cmake .. -DCMAKE_INSTALL_PREFIX=/install/prefix
    $ cmake --build . --target install

    For more advanced use or questions about CMake please read http://www.cmake.org/Wiki/CMake_FAQ.

    Language Bindings

    Here are the bindings to libgit2 that are currently available:

    If you start another language binding to libgit2, please let us know so we can add it to the list.

    How Can I Contribute

    Fork libgit2/libgit2 on GitHub, add your improvement, push it to a branch in your fork named for the topic, send a pull request.

    You can also file bugs or feature requests under the libgit2 project on GitHub, or join us on the mailing list by sending an email to:

    libgit2@librelist.com

    License

    libgit2 is under GPL2 with linking exemption. This means you can link to the library with any program, commercial, open source or other. However, you cannot modify libgit2 and distribute it without supplying the source.

    See the COPYING file for the full license text.