Subject: Re: process committed files in post-receive hook

From: Hao Wang <[email-masked]>
Date: Thu, 15 Dec 2011 00:19:08 -0800

> If you are scripting, we usually encourage the use of "plumbing"
> commands whose output is guaranteed not to change ("show" is a
> "porcelain" command intended to be used by end-users, and it's possible
> that its behavior might change from version to version).
>
> The plumbing command to get a directory listing for a tree is "git
> ls-tree" (try the "--name-only" option for terse output, and use "-z" if
> you want to be robust in the face of filenames with funny characters).

Jeff, thank you for the information. This is really helpful.

>> # get a list of rule files using git show
>> def getRuleFileList(rev):
>>      # run git show
>>      p = subprocess.Popen(['git', 'show', rev], stdout=subprocess.PIPE)
>>      p.wait()
>>      if p.returncode != 0: return None # error
>>
>>      # parse output
>>      i = 0
>>      filelist = []
>>      for line in p.stdout.readlines():
>>          filelist.append(line)
>>      p.stdout.close()
>>      return filelist
>
> Doesn't this put "tree HEAD:foo", as printed by "git show", at the top
> of your filelist? Another reason to use ls-tree.

Yes, the first two items ("tree HEAD:foo" and an empty line) are removed 
later from filelist.

Hao