I’m trying to create a script that that is flexible enough to accept
input that is read from a file whose filename is passed as a command
line argument, or from STDIN via a pipe.
(This is on a WinXP platform rather than Unix)
By way of a simple example, I want both of the following to produce the
1: myScript.rb *.txt
2: cat *.txt | myScript.rb
I have had some joy with the first approach…
while line = ARGF.gets #-- Do the interesting stuff here... or just
print the line.
However, I cannot get anything to work for the pipe approach. I thought
that this would handle piped along STDIN
while gets() line = $_ print line end
but it chucks the following error:
U:\dev\WM&CAPS\capsfiles>cat testfile.caps | caps.rb c:/scripts/caps.rb:1:in `gets': Bad file descriptor
It does work for STDIO that comes in from the console, but not the pipe.
Oddly (for me), this code works when you pass the filename on the
Apologies for my newbie stupidity. I’ve had a good half hours google for
help on this but haven’t had any luck.
Any help would be appreciated.
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