commit 696e7f3d504d5675d993ea359260dc67d89d8714
Author: John Sirois <john.sirois@gmail.com>
Date:   Mon Apr 13 13:09:35 2015 -0600

    Initial port of twitter/commons jar-tool.
    
    Copy jar-tool in from twitter/commons.
    
    This ports the jar-tool used by pants but does not actually
    configure pants to use the ported tool.  That will come later after
    the tool is published: https://github.com/pantsbuild/pants/issues/1361
    
    The jar-tool in twitter/commons will be deleted after this tool is
    published and consumed by pants HEAD.
    
    Testing Done:
    Locally dogfooded the jar-tool to build itself comparing before/after:
    ```console
    $ PANTS_DEV=1 ./pants clean-all binary
    src/java/org/pantsbuild/tools/jar:main
    $ cp dist/jar-tool.jar dist/jar-tool.created-by.c.t.c.jar
    
    $ git diff
    diff --git a/BUILD.tools b/BUILD.tools
    index 81fc8d8..b233485 100644
    --- a/BUILD.tools
    +++ b/BUILD.tools
    @@ -152,7 +152,8 @@ jar_library(name = 'spindle-codegen',
    
     jar_library(name = 'jar-tool',
                 jars = [
    -              jar(org = 'com.twitter.common', name = 'jar-tool', rev =
                   '0.1.9')
    +              jar(org = 'com.twitter.common', name = 'jar-tool', rev =
    'none', mutable=True,
    +
    url='file:///home/jsirois/dev/3rdparty/jsirois-pants4/dist/jar-tool.jar')
                 ])
    
     jar_library(name = 'jarjar',
    diff --git a/src/python/pants/backend/jvm/tasks/jar_task.py
    b/src/python/pants/backend/jvm/tasks/jar_task.py
    index 438e1e5..7298fac 100644
    --- a/src/python/pants/backend/jvm/tasks/jar_task.py
    +++ b/src/python/pants/backend/jvm/tasks/jar_task.py
    @@ -288,7 +288,7 @@ class JarTask(NailgunTask):
             # need the same JVM args as its parent.
             jvm_options = self.context.config.getlist('jar-tool',
    'jvm_args', default=['-Xmx64M'])
             self.runjava(self.tool_classpath('jar-tool'),
    -                     'com.twitter.common.jar.tool.Main',
    +                     'org.pantsbuild.tools.jar.Main',
                          jvm_options=jvm_options,
                          args=args,
                          workunit_name='jar-tool',$
    $ PANTS_DEV=1 ./pants clean-all binary
    src/java/org/pantsbuild/tools/jar:main
    
    $ mkdir /tmp/jar-tool.jar /tmp/jar-tool.created-by.c.t.c.jar
    $ unzip -qd /tmp/jar-tool.created-by.c.t.c.jar
    dist/jar-tool.created-by.c.t.c.jar
    $ unzip -qd /tmp/jar-tool.jar dist/jar-tool.jar
    $ diff -r /tmp/jar-tool.created-by.c.t.c.jar /tmp/jar-tool.jar
    diff -r /tmp/jar-tool.created-by.c.t.c.jar/META-INF/MANIFEST.MF
    /tmp/jar-tool.jar/META-INF/MANIFEST.MF
    2c2
    < Created-By: com.twitter.common.jar.tool.JarBuilder
    ---
    > Created-By: org.pantsbuild.tools.jar.JarBuilder
    ```
    
    CI went green here:
      https://travis-ci.org/pantsbuild/pants/builds/58311252
    
    Bugs closed: 1362, 1415
    
    Reviewed at https://rbcommons.com/s/twitter/r/2071/

 .../pantsbuild/args4j/ArgfileOptionHandler.java    |  67 +++++++++++
 .../pantsbuild/args4j/BooleanOptionHandler.java    |  64 +++++++++++
 .../pantsbuild/args4j/CollectionOptionHandler.java |  73 ++++++++++++
 src/java/org/pantsbuild/args4j/Parser.java         | 128 +++++++++++++++++++++
 4 files changed, 332 insertions(+)