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gerrit / jgit / d476d2f7296792508e02a1c44030a8151dcf4e00
commitd476d2f7296792508e02a1c44030a8151dcf4e00[log] [tgz]
authorMatthias Sohn <matthias.sohn@sap.com>Mon Dec 15 14:42:04 2014 +0100
committerMatthias Sohn <matthias.sohn@sap.com>Thu Dec 18 14:49:20 2014 +0100
tree33d3748ce0593e5f135a23c761266872b67014c4
parenta09b1b6c3d90713ab5e3473bd7aa32387dc294c3 [diff]
ObjectChecker: Disallow names potentially mapping to ".git" on HFS+

Mac's HFS+ folds concatentations of ".git" and ignorable Unicode
characters [1] to ".git" [2]. Hence we need to disallow all names which
could potentially be a shortname for ".git". Example: in an empty
directory create a folder ".g\U+200Cit". Now you can't create another
folder ".git".

The following characters are ignorable Unicode which are ignored on
HFS+:

unicode   hex         name
-------------------------------------------------
U+200C    0xe2808c    ZERO WIDTH NON-JOINER
U+200D    0xe2808d    ZERO WIDTH JOINER
U+200E    0xe2808e    LEFT-TO-RIGHT MARK
U+200F    0xe2808f    RIGHT-TO-LEFT MARK
U+202A    0xe280aa    LEFT-TO-RIGHT EMBEDDING
U+202B    0xe280ab    RIGHT-TO-LEFT EMBEDDING
U+202C    0xe280ac    POP DIRECTIONAL FORMATTING
U+202D    0xe280ad    LEFT-TO-RIGHT OVERRIDE
U+202E    0xe280ae    RIGHT-TO-LEFT OVERRIDE
U+206A    0xe281aa    INHIBIT SYMMETRIC SWAPPING
U+206B    0xe281ab    ACTIVATE SYMMETRIC SWAPPING
U+206C    0xe281ac    INHIBIT ARABIC FORM SHAPING
U+206D    0xe281ad    ACTIVATE ARABIC FORM SHAPING
U+206E    0xe281ae    NATIONAL DIGIT SHAPES
U+206F    0xe281af    NOMINAL DIGIT SHAPES
U+FEFF    0xefbbbf    ZERO WIDTH NO-BREAK SPACE

[1] http://www.unicode.org/versions/Unicode7.0.0/ch05.pdf#G40025
    http://www.unicode.org/reports/tr31/#Layout_and_Format_Control_Characters
[2] http://dubeiko.com/development/FileSystems/HFSPLUS/tn1150.html#UnicodeSubtleties

Change-Id: Ib6a1dd090b2649bdd8ec16387c994ed29de2860d
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
2 files changed
tree: 33d3748ce0593e5f135a23c761266872b67014c4
  1. org.eclipse.jgit/
  2. org.eclipse.jgit.ant/
  3. org.eclipse.jgit.ant.test/
  4. org.eclipse.jgit.archive/
  5. org.eclipse.jgit.console/
  6. org.eclipse.jgit.http.apache/
  7. org.eclipse.jgit.http.server/
  8. org.eclipse.jgit.http.test/
  9. org.eclipse.jgit.java7/
  10. org.eclipse.jgit.java7.test/
  11. org.eclipse.jgit.junit/
  12. org.eclipse.jgit.junit.http/
  13. org.eclipse.jgit.packaging/
  14. org.eclipse.jgit.pgm/
  15. org.eclipse.jgit.pgm.test/
  16. org.eclipse.jgit.test/
  17. org.eclipse.jgit.ui/
  18. tools/
  19. .eclipse_iplog
  20. .gitattributes
  21. .gitignore
  22. LICENSE
  23. pom.xml
  24. README.md
  25. SUBMITTING_PATCHES
README.md

Java Git

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

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. It provides classes to read and write a Git repository and operate on a working directory.

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

  • org.eclipse.jgit.ant

    Ant tasks based on JGit.

  • org.eclipse.jgit.http.server

    Server for the smart and dumb Git HTTP protocol.

  • org.eclipse.jgit.pgm

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

  • 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 some missing features:

  • gitattributes support

Support

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

https://dev.eclipse.org/mailman/listinfo/jgit-dev

Contributing

See the EGit Contributor Guide:

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

About Git

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

http://git-scm.com/