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Java Git
========
# Java Git


An implementation of the Git version control system in pure Java. An implementation of the Git version control system in pure Java.


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


JGit can be imported straight into Eclipse, built and tested from
there, but the automated builds use Maven.
JGit can be imported straight into Eclipse and built and tested from
there. It can be built from the command line using
[Maven](https://maven.apache.org/) or [Bazel](https://bazel.build/).
The CI builds use Maven and run on [Jenkins](https://ci.eclipse.org/jgit/).


- org.eclipse.jgit
- __org.eclipse.jgit__


A pure Java library capable of being run standalone, with no A pure Java library capable of being run standalone, with no
additional support libraries. It provides classes to read and additional support libraries. It provides classes to read and
All portions of JGit are covered by the EDL. Absolutely no GPL, All portions of JGit are covered by the EDL. Absolutely no GPL,
LGPL or EPL contributions are accepted within this package. LGPL or EPL contributions are accepted within this package.


- org.eclipse.jgit.ant
- __org.eclipse.jgit.ant__


Ant tasks based on JGit. Ant tasks based on JGit.


- org.eclipse.jgit.archive
- __org.eclipse.jgit.archive__


Support for exporting to various archive formats (zip etc). Support for exporting to various archive formats (zip etc).


- org.eclipse.jgit.http.apache
- __org.eclipse.jgit.http.apache__


Apache httpclient support
[Apache httpclient](https://hc.apache.org/httpcomponents-client-ga/) support.


- org.eclipse.jgit.http.server
- __org.eclipse.jgit.http.server__


Server for the smart and dumb Git HTTP protocol.
Server for the smart and dumb
[Git HTTP protocol](https://github.com/git/git/blob/master/Documentation/technical/http-protocol.txt).


- org.eclipse.jgit.pgm
- __org.eclipse.jgit.lfs__


Command-line interface Git commands implemented using JGit
("pgm" stands for program).
Support for [LFS](https://git-lfs.github.com/) (Large File Storage).

- __org.eclipse.jgit.lfs.server__


- org.eclipse.jgit.packaging
Basic LFS server support.

- __org.eclipse.jgit.packaging__


Production of Eclipse features and p2 repository for JGit. See the JGit Production of Eclipse features and p2 repository for JGit. See the JGit
Wiki on why and how to use this module. Wiki on why and how to use this module.


Tests
-----
- __org.eclipse.jgit.pgm__

Command-line interface Git commands implemented using JGit
("pgm" stands for program).


- org.eclipse.jgit.junit
- __org.eclipse.jgit.ssh.apache__


Helpers for unit testing
Client support for the ssh protocol based on
[Apache Mina sshd](https://mina.apache.org/sshd-project/).


- org.eclipse.jgit.test
- __org.eclipse.jgit.ui__


Unit tests for org.eclipse.jgit
Simple UI for displaying git log.


- org.eclipse.jgit.ant.test
- org.eclipse.jgit.pgm.test
- org.eclipse.jgit.http.test
- org.eclipse.jgit.junit.test
## Tests


No further description needed
- __org.eclipse.jgit.junit__, __org.eclipse.jgit.junit.http__,
__org.eclipse.jgit.junit.ssh__: Helpers for unit testing
- __org.eclipse.jgit.ant.test__: Unit tests for org.eclipse.jgit.ant
- __org.eclipse.jgit.http.test__: Unit tests for org.eclipse.jgit.http.server
- __org.eclipse.jgit.lfs.server.test__: Unit tests for org.eclipse.jgit.lfs.server
- __org.eclipse.jgit.lfs.test__: Unit tests for org.eclipse.jgit.lfs
- __org.eclipse.jgit.pgm.test__: Unit tests for org.eclipse.jgit.pgm
- __org.eclipse.jgit.ssh.apache.test__: Unit tests for org.eclipse.jgit.ssh.apache
- __org.eclipse.jgit.test__: Unit tests for org.eclipse.jgit


Warnings/Caveats
----------------
## Warnings/Caveats


- Native smbolic links are supported, provided the file system supports
them. For Windows you must have Windows Vista/Windows 2008 or newer,
use a non-administrator account and have the SeCreateSymbolicLinkPrivilege.
- Native symbolic links are supported, provided the file system supports
them. For Windows you must use a non-administrator account and have the SeCreateSymbolicLinkPrivilege.


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


- JGit requires at least a Java 8 JDK. - JGit requires at least a Java 8 JDK.


- CRLF conversion is performed depending on the core.autocrlf setting,
- CRLF conversion is performed depending on the `core.autocrlf` setting,
however Git for Windows by default stores that setting during however Git for Windows by default stores that setting during
installation in the "system wide" configuration file. If Git is not installation in the "system wide" configuration file. If Git is not
installed, use the global or repository configuration for the installed, use the global or repository configuration for the
is installed. Modifying PATH is the recommended option if C Git is is installed. Modifying PATH is the recommended option if C Git is
installed. installed.


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

## 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. introducing changes in files under a specified path.
- Object transport


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


* Garbage collection

* Merge

* Rebase
- Garbage collection
- Merge
- Rebase
- And much more


* And much more

- org.eclipse.jgit.pgm/

* Assorted set of command line utilities. Mostly for ad-hoc testing of jgit
- __org.eclipse.jgit.pgm__
- Assorted set of command line utilities. Mostly for ad-hoc testing of jgit
log, glog, fetch etc. log, glog, fetch etc.
- __org.eclipse.jgit.ant__
- Ant tasks
- __org.eclipse.jgit.archive__
- Support for Zip/Tar and other formats
- __org.eclipse.http__
- HTTP client and server support


- org.eclipse.jgit.ant/

* Ant tasks

- org.eclipse.jgit.archive/

* Support for Zip/Tar and other formats

- org.eclipse.http.*/

* HTTP client and server support

Missing Features
----------------
## Missing Features


There are some missing features: There are some missing features:


- gitattributes support


Support
-------
- verifying signed commits
- signing tags
- signing push


Post question, comments or patches to the jgit-dev@eclipse.org mailing list.
You need to be subscribed to post, see here:
## Support


https://dev.eclipse.org/mailman/listinfo/jgit-dev
Post questions, comments or discussions to the jgit-dev@eclipse.org mailing list.
You need to be [subscribed](https://dev.eclipse.org/mailman/listinfo/jgit-dev)
to post. File bugs and enhancement requests in
[Bugzilla](https://wiki.eclipse.org/EGit/Contributor_Guide#Filing_Bugs).


## Contributing


Contributing
------------
See the EGit Contributor Guide: http://wiki.eclipse.org/EGit/Contributor_Guide


See the EGit Contributor Guide:

http://wiki.eclipse.org/EGit/Contributor_Guide


About Git
---------
## About Git


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

http://git-scm.com/
C based implementation can be obtained from the
[Git website](http://git-scm.com/).

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