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Shawn O. Pearce 882d03f70e Fix smart HTTP client buffer alignment 
This proved to be a pretty difficult to find bug.  If we read exactly
the number of response bytes from the UnionInputStream and didn't
try to read beyond that length, the last connection's InputStream is
still inside of the UnionInputStream, and UnionInputStream.isEmpty()
returns false.  But there is no data present, so the next read
request to our UnionInputStream returns EOF at a point where the
HTTP client code should have started a new request in order to get
more data.

Instead of wrapping the UnionInputStream, push an dummy stream onto
the end of it which when invoked always starts the next request and
then returns EOF.  The UnionInputStream will automatically pop that
dummy stream out, and then read the next request's stream.

This way we never get into the state where we don't think we need
to run another request in order to satisfy the current read request,
but we really do.

The bug was hidden for so long because BasePackConnection.init()
was always wrapping the InputStream into a BufferedInputStream
with an 8 KiB buffer.  This made the odds of us reading from the
UnionInputStream the exact number of available bytes quite low, as
the BufferedInputStream would always try to read a full buffer size.

Change-Id: I02b5ec3ef6853688687d91de000a5fbe2354915d
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
 		2010-03-12 16:08:14 -08:00
org.eclipse.jgit Fix smart HTTP client buffer alignment 2010-03-12 16:08:14 -08:00
org.eclipse.jgit.console Cleanup OSGi Import-Package specifications to use versions 2010-02-02 20:03:03 -08:00
org.eclipse.jgit.http.server Cleanup OSGi Import-Package specifications to use versions 2010-02-02 20:03:03 -08:00
org.eclipse.jgit.http.test Use "ERR message" for early ReceivePack problems 2010-03-12 16:08:14 -08:00
org.eclipse.jgit.iplog Cleanup OSGi Import-Package specifications to use versions 2010-02-02 20:03:03 -08:00
org.eclipse.jgit.junit Cleanup OSGi Import-Package specifications to use versions 2010-02-02 20:03:03 -08:00
org.eclipse.jgit.packaging Update build to use Tycho 0.7.0 2010-02-08 17:16:54 +01:00
org.eclipse.jgit.pgm Capture non-progress side band #2 messages and put in result 2010-03-12 16:08:13 -08:00
org.eclipse.jgit.test Refactor SideBandOutputStream to be buffered 2010-03-12 16:07:45 -08:00
org.eclipse.jgit.ui Cleanup OSGi Import-Package specifications to use versions 2010-02-02 20:03:03 -08:00
tools Switch build to Apache Felix maven-bundle-plugin 2009-12-28 15:59:14 -08:00
.eclipse_iplog Generate an Eclipse IP log with jgit eclipse-iplog 2010-01-29 07:23:54 -08:00
.gitattributes Initial JGit contribution to eclipse.org 2009-09-29 16:47:03 -07:00
LICENSE Initial JGit contribution to eclipse.org 2009-09-29 16:47:03 -07:00
README Initial JGit contribution to eclipse.org 2009-09-29 16:47:03 -07:00
SUBMITTING_PATCHES Correcting explanation of EDL 2009-10-28 14:12:07 +01:00
pom.xml Generate an Eclipse IP log with jgit eclipse-iplog 2010-01-29 07:23:54 -08:00

README 

            == Java GIT ==

This package is licensed under the BSD.

  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 BSD.  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 never performed. On Windows you should thereforc
  make sure your projects and workspaces are configured to save files
  with Unix (LF) line endings.

            == 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/