How to check the file is available or not

ruby-talk
1

How to check the file is available or not.
write this simple code for checking the file.
but if file not found they print the first condition.

if(contents = File.read("c:/test/test.txt"))
              log.debug "Text File Available.....!!!!!!!!"
        else
              log.debug "File not Available"
              break
        end

···

--
Posted via http://www.ruby-forum.com/.

2

if test ?e, "c:/test/test.txt"

Jesus.

···

On Fri, May 14, 2010 at 7:57 AM, KingMaker KingMaker <sweetzubair@gmail.com> wrote:

How to check the file is available or not.
write this simple code for checking the file.
but if file not found they print the first condition.

if(contents = File.read("c:/test/test.txt"))
log.debug "Text File Available.....!!!!!!!!"
else
log.debug "File not Available"
break
end

3

KingMaker KingMaker wrote:

How to check the file is available or not.

You can do this with File.exist?("..."), but I'd do this:

begin
  contents = File.read("c:/test/test.txt")
  log.debug "Text File Available.....!!!!!!!!"
rescue Errno::ENOENT
  log.debug "File not available"
  break
end

This is technically better because it avoids a race condition (the file
being deleted within the short time between when you test for its
existence, and when you actually read it)

···

--
Posted via http://www.ruby-forum.com/\.

4

KingMaker KingMaker wrote:

How to check the file is available or not.

There is File.readable?(name)
but who knows if it actually works in windows...if you're not on windows
it probably works fine.

-rp

···

--
Posted via http://www.ruby-forum.com/\.