From: Alex LeDonne <aledonne.listmail@...>
Date: 2008-01-18T06:00:45+09:00
Subject: Re: gsub and regexes on binary files...

On Jan 17, 2008 10:32 AM, Kyle Schmitt <kyleaschmitt@gmail.com> wrote:
> I'm having a few issues with gsubbing a regex on a binary file.
> With all text, this seems to work great, but with the binary junk in a
> file, only some of the instances are replaced, not all.

Could you send an example where the regex failed? Then we can try to
figure out what's different about the failure case.

-A



> What this script is supposed to do, is pull mail message out of
> quarantine, change who it's going to, and put it back in postfix's
> queue to send it on its way.
>
> This is a super-simplified version of the code in question (just
> in-case you're wondering, if you really write something like this, you
> need to change the ownership and permission of the resulting file,
> otherwise postfix won't pick it up).
>
> #!/usr/bin/ruby
> message_path="/var/spool/MailScanner/quarantine/20080111/ABCDEFG"
> postfix_outgoing_path="/var/spool/postfix/incoming/A/ABCDEFG"
> message=File.open(message_path,"rb"){|f| f.read()}
> message.gsub(/[a-z][a-z0-9]*@candycompany.foo/i,"review-spam@candycompany.foo")
> outgoing_message=File.open(postfix_outgoing_path,"wb"){|f| f.write(message)}
>
> Err.  Since the real version of this script is rather lengthy and a
> little ugly, mostly due to the command-line-option parsing, anyone
> have a suggestion on a good CLI library to use :) my home-grown
> attempt is functional at best...
>
> Thanks,
>         Kyle