Asp Forum - about file format

Li Chen

10/22/2006 4:52:00 PM

Hi guys,

I just wonder what is the default file format which can recognized by
File.file?(). I have some files in a folder with this format:

OTI-4.001
OTI-4.002
OTI-4.003
OTI-4.004
OTI-4.005
OTI-4.006
OTI-4.007

I use irb to check if this format can be seen by Ruby and here is the
result:

irb(main):007:0> File.file?('OTI-4.001')
=> false

Any comments?

Thank you in advance,

Li

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9 Answers

EB

10/22/2006 5:09:00 PM

Li Chen wrote:
> Hi guys,
>
> I just wonder what is the default file format which can recognized by
> File.file?(). I have some files in a folder with this format:
>
> OTI-4.001
> OTI-4.002
<...>
>
> I use irb to check if this format can be seen by Ruby and here is the
> result:
>
> irb(main):007:0> File.file?('OTI-4.001')
> => false

Li,

Try again, I just did the following on my Linux box and
it worked fine:

$ touch OTI-4.001

$ ls OTI-4.001
OTI-4.001

$ irb
irb(main):001:0> File.file?('OTI-4.001')
=> true
irb(main):002:0>

EB

Li Chen

10/22/2006 5:26:00 PM

Li Chen

10/22/2006 5:37:00 PM

EB wrote:
> Try again, I just did the following on my Linux box and
> it worked fine:
>
> $ touch OTI-4.001
>
> $ ls OTI-4.001
> OTI-4.001
>
> $ irb
> irb(main):001:0> File.file?('OTI-4.001')
> => true
> irb(main):002:0>
>
> EB

Hi,

I try different formats and these are what I get:

C:\Ruby\self>irb
irb(main):001:0> File:file?(ruby.rb)
SyntaxError: compile error
(irb):1: parse error, unexpected '(', expecting $
File:file?(ruby.rb)
^
from (irb):1
irb(main):002:0> File.file?("ruby.rb")
=> true
irb(main):003:0> File.file?('ruby.rb')
=> true
irb(main):004:0> File.file?("ruby1.rb")
=> false
irb(main):005:0> File.file?('ruby1.rb')
=> false
irb(main):006:0> File.file?("ruby-1.rb")
=> false
irb(main):007:0> File.file?('ruby-1.rb')
=> false
irb(main):008:0>

It seems Ruby only see ruby.rb as a file but not ruby-1.rb or ruby1.rb
as a file under XP

Li

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Kalman Noel

10/22/2006 5:40:00 PM

Li Chen:
> irb(main):003:0> File.file?('ruby.rb')
> => true
> irb(main):004:0> File.file?("ruby1.rb")
> => false

What does Dir.entries('.') say in the same directory?

Kalman

EB

10/22/2006 5:41:00 PM

Li Chen wrote:
>
> Unfortunately I work under XP.

Shouldn't make a difference, that's one of the nice things
about Ruby, its portability.

However, just to be sure, I redid it under XP:

C:\Ruby>dir OTI*
Volume in drive C has no label.
Volume Serial Number is 941C-BE4A

Directory of C:\Ruby

10/15/2006 18:21 34 OTI-4.001
1 File(s) 34 bytes
0 Dir(s) 19,644,063,744 bytes free

C:\bonak\Ruby>irb
irb(main):001:0> File.file?('OTI-4.001')
=> true
irb(main):002:0>

Works here too .. so I am not sure why yours is not
working. Did you try again? I have managed to get irb
confused before and once I restarted things worked well.

eb

Paul Lutus

10/22/2006 7:19:00 PM

Li Chen wrote:

/ ...

> irb(main):001:0> File:file?(ruby.rb)
> SyntaxError: compile error
> (irb):1: parse error, unexpected '(', expecting $
> File:file?(ruby.rb)
> ^
> from (irb):1

You must put quotation marks around the file name.

--
Paul Lutus
http://www.ara...

Li Chen

10/22/2006 7:49:00 PM

> Directory of C:\Ruby
>
> 10/15/2006 18:21 34 OTI-4.001
> 1 File(s) 34 bytes
> 0 Dir(s) 19,644,063,744 bytes free
>
> C:\bonak\Ruby>irb
> irb(main):001:0> File.file?('OTI-4.001')
> => true
> irb(main):002:0>
>
> Works here too .. so I am not sure why yours is not
> working. Did you try again? I have managed to get irb
> confused before and once I restarted things worked well.
>
> eb

Hi EB,

I figure out why it doesn't work: irb only looks for the file name in
current directory. I try on both linux and xp.
But the files I want to search are in a different drive under XP.
Actually this question comes from the following script1 and script2:

########### script1--It works perfect.
file_number=0
path="I:\\Common\\Gao\\Notebooks\\Flow\\OT1\\OTI-4"

Dir.foreach(path) do |file_name|

if file_name=~/(\w+|d+).(\d{3,})/
puts file_name
file_number+=1
end
end

puts
puts 'Files',path
puts 'File number',file_number

############Screen ouptut
C:\Ruby\self>dir5.rb
OTI-4.001
...
OTI-4.025
OTI-4.026

Files
I:\Common\Gao\Notebooks\Flow\OT1\OTI-4
File number
26

####script2--Doesn't work

file_number=0
path="I:\\Common\\Gao\\Notebooks\\Flow\\OT1\\OTI-4"

Dir.foreach(path) do |file_name|

if File.file?(file_name)
puts file_name
puts File.size(file_name)
file_number+=1
end
end

puts
puts 'Files',path
puts 'File number',file_number

##screen output

C:\Ruby\self>dir5.rb

Files
I:\Common\Gao\Notebooks\Flow\OT1\OTI-4
File number
0

But right now I just don't know how to make script 2 work.

Li

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Li Chen

10/22/2006 9:30:00 PM

Scott Barron wrote:

>
> As was said in another thread, you need to assemble the full path to the
> file.
>
> Dir.foreach(path) do |file_name|
> if File.file?(File.join(path, file_name))
> # ...
> end
> end

Hi,

Robert also privodes another solution one:

#####
require 'find'

path='I:/Common/xxx/Notebooks/Flow/OT1/OTI-4'

file_number = 0

Find.find(path) do |f|

puts f if File.file?(f) && f=~/\.\d+$/
# print out the file with format xxx.001 xxx.002...
file__number+=1

end

puts file_number

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EB

10/24/2006 11:29:00 AM

Li Chen wrote:
>
> I figure out why it doesn't work: irb only looks for the file name in
> current directory.

Yup, that's why I showed a directory listing each time
before I ran my examples :-)

EB

comp.lang.ruby

about file format

Li Chen

EB

Li Chen

Li Chen

Kalman Noel

EB

Paul Lutus

Li Chen

Li Chen

EB

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