Does ruby have file tests like Perl's:
-t : file (mostly STDIN) is attached to a tty
-B : file is binary
···
--
Wybo
Does ruby have file tests like Perl's:
-t : file (mostly STDIN) is attached to a tty
uln% ri IO#tty?
---------------------------------------------------------------- IO#tty?
ios.isatty => true or false
ios.tty? => true or false
···
------------------------------------------------------------------------
Returns +true+ if _ios_ is associated with a terminal device (tty),
+false+ otherwise.
File.new("testfile").isatty #=> false
File.new("/dev/tty").isatty #=> true
uln%
-B : file is binary
Define what is a binary file ?
Guy Decoux
ts <decoux@moulon.inra.fr> writes:
> -B : file is binary
Define what is a binary file ?
In this context, Perl essentially means that the file has a lot of
non-ASCII characters. From the perlfunc man page
-T File is an ASCII text file (heuristic guess).
-B File is a "binary" file (opposite of -T).
and
The "-T" and "-B" switches work as follows. The
first block or so of the file is examined for odd
characters such as strange control codes or char-
acters with the high bit set. If too many strange
characters (>30%) are found, it's a "-B" file,
otherwise it's a "-T" file. Also, any file con-
taining null in the first block is considered a
binary file. If "-T" or "-B" is used on a file-
handle, the current IO buffer is examined rather
than the first block. Both "-T" and "-B" return
true on a null file, or a file at EOF when testing
a filehandle. Because you have to read a file to
do the "-T" test, on most occasions you want to
use a "-f" against the file first, as in "next
unless -f $file && -T $file".
In this context, Perl essentially means that the file has a lot of
non-ASCII characters.
Well, this is fine for english but what do you for other languages ?
The author of this P language is an "anglois" and perhaps he can see the
problem 
Guy Decoux
ts <decoux@moulon.inra.fr> writes:
>
> > -B : file is binary
>
> Define what is a binary file ?In this context, Perl essentially means that the file has a lot of
non-ASCII characters. From the perlfunc man page-T File is an ASCII text file (heuristic guess).
-B File is a "binary" file (opposite of -T).and
The "-T" and "-B" switches work as follows. The
first block or so of the file is examined for odd
characters such as strange control codes or char-
acters with the high bit set. If too many strange
In Larry Wall's Reference here ^ he adds:
(that don't look like UTF-8)
···
On Mon, 31 Jan 2005, Tim Heaney wrote:
characters (>30%) are found, it's a "-B" file,
otherwise it's a "-T" file. Also, any file con-
taining null in the first block is considered a
binary file. If "-T" or "-B" is used on a file-
handle, the current IO buffer is examined rather
than the first block. Both "-T" and "-B" return
true on a null file, or a file at EOF when testing
a filehandle. Because you have to read a file to
do the "-T" test, on most occasions you want to
use a "-f" against the file first, as in "next
unless -f $file && -T $file".
--
Wybo
The author of this P language is an "anglois" and perhaps he can see the
^^^^^^
he can't
problem
sorry,
Guy Decoux
In Larry Wall's Reference here ^ he adds:
(that don't look like UTF-8)
He is definitively an "anglois" : he know only ASCII and UTF-8
Guy Decoux