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README.md

Java Git

This package is licensed under the EDL (Eclipse Distribution License).

  • org.eclipse.jgit/

    A pure Java library capable of being run standalone, with no additional support libraries. Some JUnit tests are provided to exercise the library. The library provides functions to read and write a Git formatted repository.

    All portions of jgit are covered by the EDL. Absolutely no GPL, LGPL or EPL contributions are accepted within this package.

  • org.eclipse.jgit.test/

    Unit tests for org.eclipse.jgit and the same licensing rules.

Warnings/Caveats

  • Symbolic links are not supported because java does not support it. Such links could be damaged.

  • Only the timestamp of the index is used by jgit check if the index is dirty.

  • Don’t try the library with a JDK other than 1.6 (Java 6) unless you are prepared to investigate problems yourself. JDK 1.5.0_11 and later Java 5 versions may work. Earlier versions do not. JDK 1.4 is not supported. Apple’s Java 1.5.0_07 is reported to work acceptably. We have no information about other vendors. Please report your findings if you try.

  • CRLF conversion is performed depending on the core.autocrlf setting, however Git for Windows by default stores that setting during installation in the “system wide” configuration file. If Git is not installed, use the global or repository configuration for the core.autocrlf setting.

  • The system wide configuration file is located relative to where C Git is installed. Make sure Git can be found via the PATH environment variable. When installing Git for Windows check the “Run Git from the Windows Command Prompt” option. There are other options like the jgit.gitprefix system propety or Eclipse settings that can be used for pointing out where C Git is installed. Modifying PATH is the recommended option if C Git is installed.

  • We try to use the same notation of $HOME as C Git does. On Windows this is often not same value as the user.home system property.

Package Features

  • org.eclipse.jgit/

    • Read loose and packed commits, trees, blobs, including deltafied objects.

    • Read objects from shared repositories

    • Write loose commits, trees, blobs.

    • Write blobs from local files or Java InputStreams.

    • Read blobs as Java InputStreams.

    • Copy trees to local directory, or local directory to a tree.

    • Lazily loads objects as necessary.

    • Read and write .git/config files.

    • Create a new repository.

    • Read and write refs, including walking through symrefs.

    • Read, update and write the Git index.

    • Checkout in dirty working directory if trivial.

    • Walk the history from a given set of commits looking for commits introducing changes in files under a specified path.

    • Object transport Fetch via ssh, git, http, Amazon S3 and bundles. Push via ssh, git and Amazon S3. JGit does not yet deltify the pushed packs so they may be a lot larger than C Git packs.

  • org.eclipse.jgit.pgm/

    • Assorted set of command line utilities. Mostly for ad-hoc testing of jgit log, glog, fetch etc.

Missing Features

There are a lot of missing features. You need the real Git for this. For some operations it may just be the preferred solution also. There are not just a command line, there is e.g. git-gui that makes committing partial files simple.

  • Merging.

  • Repacking.

  • Generate a GIT format patch.

  • Apply a GIT format patch.

  • Documentation. :-)

  • gitattributes support In particular CRLF conversion is not implemented. Files are treated as byte sequences.

  • submodule support Submodules are not supported or even recognized.

Support

Post question, comments or patches to the git@vger.kernel.org mailing list.

Contributing

See SUBMITTING_PATCHES in this directory. However, feedback and bug reports are also contributions.

About Git

More information about GIT, its repository format, and the canonical C based implementation can be obtained from the GIT websites:

http://git.or.cz/ http://www.kernel.org/pub/software/scm/git/ http://www.kernel.org/pub/software/scm/git/docs/