Thanks David.
I tried to go through all supported clients like CVS/ClearCase(class 
CVSClient(SCMClient): , class ClearCaseClient(SCMClient):)

Which function in this class is really returning the original version or 
modified version of file.
>From all the Client classes, I could see that diff function is overwitten 
and it is returing the difference between files.
But which is the function that returns the original/modified file?

Also post-review or rbt post is not used with revisions in the customnized 
CMVC client, hence no need to have parse_revision_spec and
need not consider revisions right? It would also have revisions as zero.

Pls. help, which class can be taken as a reference to fix issues with 
customized class.
tmppg8GFU should contain original file and tmppg8GFU.new should contain 
modified file?

Thanks,
Jes. 
 

On Sunday, September 14, 2014 1:41:14 AM UTC+5:30, David Trowbridge wrote:
>
> The tmppg8GFU file should be the original version of the file being 
> patched. Given that this is empty, I believe that there is a bug in your 
> cvmc SCMTool implementation.
>
> -David
>
> On Sat, Sep 13, 2014 at 10:23 AM, <ch.je...@gmail.com <javascript:>> 
> wrote:
>
>> Hi David,
>> IT is a customized control system, cmvc.
>>
>> Diff is properly generated in the debug files. tmppg8GFU-new.rej file and 
>> test.diff.
>>
>> But it is unable to post the diff to server. Screen is showing following 
>> error:
>>
>>
>> Traceback (most recent call last):
>>   File 
>> "/usr/local/lib/python2.7/dist-packages/ReviewBoard-2.0.6-py2.7.egg/reviewboard/diffviewer/views.py",
>>  line 236, in get
>>     renderer = self.create_renderer(context, *args, **kwargs)
>>   File 
>> "/usr/local/lib/python2.7/dist-packages/ReviewBoard-2.0.6-py2.7.egg/reviewboard/reviews/views.py",
>>  line 1088, in create_renderer
>>     *args, **kwargs)
>>   File 
>> "/usr/local/lib/python2.7/dist-packages/ReviewBoard-2.0.6-py2.7.egg/reviewboard/diffviewer/views.py",
>>  line 328, in create_renderer
>>     self.diff_file = self._get_requested_diff_file()
>>   File 
>> "/usr/local/lib/python2.7/dist-packages/ReviewBoard-2.0.6-py2.7.egg/reviewboard/diffviewer/views.py",
>>  line 369, in _get_requested_diff_file
>>     request=self.request)
>>   File 
>> "/usr/local/lib/python2.7/dist-packages/ReviewBoard-2.0.6-py2.7.egg/reviewboard/diffviewer/diffutils.py",
>>  line 373, in populate_diff_chunks
>>     chunks = generator.get_chunks()
>>   File 
>> "/usr/local/lib/python2.7/dist-packages/ReviewBoard-2.0.6-py2.7.egg/reviewboard/diffviewer/chunk_generator.py",
>>  line 153, in get_chunks
>>     large_data=True)
>>   File 
>> "/usr/local/lib/python2.7/dist-packages/Djblets-0.8.9-py2.7.egg/djblets/cache/backend.py",
>>  line 109, in cache_memoize
>>     data = lookup_callable()
>>   File 
>> "/usr/local/lib/python2.7/dist-packages/ReviewBoard-2.0.6-py2.7.egg/reviewboard/diffviewer/chunk_generator.py",
>>  line 152, in <lambda>
>>     lambda: list(self._get_chunks_uncached()),
>>   File 
>> "/usr/local/lib/python2.7/dist-packages/ReviewBoard-2.0.6-py2.7.egg/reviewboard/diffviewer/chunk_generator.py",
>>  line 160, in _get_chunks_uncached
>>     new = get_patched_file(old, self.filediff, self.request)
>>   File 
>> "/usr/local/lib/python2.7/dist-packages/ReviewBoard-2.0.6-py2.7.egg/reviewboard/diffviewer/diffutils.py",
>>  line 201, in get_patched_file
>>     return patch(diff, buffer, filediff.dest_file, request)
>>   File 
>> "/usr/local/lib/python2.7/dist-packages/ReviewBoard-2.0.6-py2.7.egg/reviewboard/diffviewer/diffutils.py",
>>  line 139, in patch
>>     'output': stderr,
>> Exception: The patch to 'test' didn't apply cleanly. The temporary files 
>> have been left in '/tmp/reviewboard.axR11W' for debugging purposes.
>> `patch` returned: 
>>
>>
>> what is the meaning of patch error?
>> How to resolve this?
>> tmppg8GFU and tmppg8GFU-new files are empty in the debug directory.
>> what supposed be contents of these files?
>> Pls. help
>>
>> Thanks,
>> Jes .
>>
>>
>> On Saturday, September 13, 2014 3:25:42 AM UTC+5:30, David Trowbridge 
>> wrote:
>>>
>>> Is the tmppg8GFU file what you'd expect? (the pre-patched file contents)
>>>
>>> What version control system?
>>>
>>> -David
>>>
>>> On Fri, Sep 12, 2014 at 11:25 AM, <ch.je...@gmail.com> wrote:
>>>
>>>> Hi,
>>>> Using reviewboard 2.0.6 and RBTools 0.6.2.
>>>> post-review worked fine and generated a new request.
>>>> When I looked into view diff for the request, it is failing.
>>>>
>>>> details error:
>>>>
>>>> Traceback (most recent call last):
>>>>   File 
>>>> "/usr/local/lib/python2.7/dist-packages/ReviewBoard-2.0.6-py2.7.egg/reviewboard/diffviewer/views.py",
>>>>  line 236, in get
>>>>     renderer = self.create_renderer(context, *args, **kwargs)
>>>>   File 
>>>> "/usr/local/lib/python2.7/dist-packages/ReviewBoard-2.0.6-py2.7.egg/reviewboard/reviews/views.py",
>>>>  line 1088, in create_renderer
>>>>     *args, **kwargs)
>>>>   File 
>>>> "/usr/local/lib/python2.7/dist-packages/ReviewBoard-2.0.6-py2.7.egg/reviewboard/diffviewer/views.py",
>>>>  line 328, in create_renderer
>>>>     self.diff_file = self._get_requested_diff_file()
>>>>   File 
>>>> "/usr/local/lib/python2.7/dist-packages/ReviewBoard-2.0.6-py2.7.egg/reviewboard/diffviewer/views.py",
>>>>  line 369, in _get_requested_diff_file
>>>>     request=self.request)
>>>>   File 
>>>> "/usr/local/lib/python2.7/dist-packages/ReviewBoard-2.0.6-py2.7.egg/reviewboard/diffviewer/diffutils.py",
>>>>  line 373, in populate_diff_chunks
>>>>     chunks = generator.get_chunks()
>>>>   File 
>>>> "/usr/local/lib/python2.7/dist-packages/ReviewBoard-2.0.6-py2.7.egg/reviewboard/diffviewer/chunk_generator.py",
>>>>  line 153, in get_chunks
>>>>     large_data=True)
>>>>   File 
>>>> "/usr/local/lib/python2.7/dist-packages/Djblets-0.8.9-py2.7.egg/djblets/cache/backend.py",
>>>>  line 109, in cache_memoize
>>>>     data = lookup_callable()
>>>>   File 
>>>> "/usr/local/lib/python2.7/dist-packages/ReviewBoard-2.0.6-py2.7.egg/reviewboard/diffviewer/chunk_generator.py",
>>>>  line 152, in <lambda>
>>>>     lambda: list(self._get_chunks_uncached()),
>>>>   File 
>>>> "/usr/local/lib/python2.7/dist-packages/ReviewBoard-2.0.6-py2.7.egg/reviewboard/diffviewer/chunk_generator.py",
>>>>  line 160, in _get_chunks_uncached
>>>>     new = get_patched_file(old, self.filediff, self.request)
>>>>   File 
>>>> "/usr/local/lib/python2.7/dist-packages/ReviewBoard-2.0.6-py2.7.egg/reviewboard/diffviewer/diffutils.py",
>>>>  line 201, in get_patched_file
>>>>     return patch(diff, buffer, filediff.dest_file, request)
>>>>   File 
>>>> "/usr/local/lib/python2.7/dist-packages/ReviewBoard-2.0.6-py2.7.egg/reviewboard/diffviewer/diffutils.py",
>>>>  line 139, in patch
>>>>     'output': stderr,
>>>> Exception: The patch to 'test' didn't apply cleanly. The temporary files 
>>>> have been left in '/tmp/reviewboard.axR11W' for debugging purposes.
>>>> `patch` returned: 
>>>>
>>>>
>>>> ls /tmp/reviewboard.axR11W
>>>> tmppg8GFU  tmppg8GFU-new  tmppg8GFU-new.rej test.diff
>>>>
>>>> diff is generated properly in the files. tmppg8GFU-new.rej file and 
>>>> test.diff has proper differences.
>>>>
>>>> Pls. help.
>>>>
>>>> Thanks,
>>>> Jes 
>>>>
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