From: "Rebhan, Gilbert" <Gilbert.Rebhan@...>
Date: 2007-08-21T17:33:48+09:00
Subject: Re: Test if file is binary ?

 

-----Original Message-----
From: Xavier Noria [mailto:fxn@hashref.com] 
Sent: Tuesday, August 21, 2007 10:25 AM
To: ruby-talk ML
Subject: Re: Test if file is binary ?

On Aug 21, 2007, at 10:21 AM, Rebhan, Gilbert wrote:

> Is there an exisiting standard what is considered as a binary file,
> means a
> rule like check the first block from a file and =
>
> - if control characters (ASCII 0-32) and "high ASCII" (> 128) are  
> found
>> 30 %
> it's considered as binary file otherwise textfile
>
> - if control characters (ASCII 0-32 and > 128) are found == 0 it's
> always
> considered as textfile
>
> ??

/*
What's the heuristic in Subversion?
*/

the subversion FAQ
http://subversion.tigris.org/faq.html#binary-files has =
" ...
if any of the bytes are zero, or if more than 15% are not ASCII printing
characters,
then Subversion calls the file binary. This heuristic might be improved
in the future, however."

Regards, Gilbert