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Re: Read Zipped files [message #49895]

Wed, 30 August 2006 14:36

loknath
Messages: 11
Registered: May 2006

Junior Member

I am running out of hard drive space and didnt want to unzip the files
but now I feel it is easier if I unzip the files in my hard drive.
Thanks everyone
Loknath

Mike Wallace wrote:
>> I don't think any of this would work in Windows but probably in OS X. Didn't
>> someone have a Windows DLM that supported zipped files?
>
> You're right. Windows doesn't have the same concept of named pipes that
> *nix does, and due to OS X being rooted in BSD, it should support named
> pipes.
>
> As for the original question, if you're using gzip to compress the
> files, IDL can read them by using the /COMPRESS flag to the OPENR, OPENU
> or OPENW commands.
>
> If you're files are zip files, the only option I know of is to unzip the
> file before you use it. If you are using *nix, you can use the named
> pipe approach as the file would be unzipped into memory rather than to
> the hard drive. If you're using Windows, the only option I can think of
> is to write a small program in another language that could handle the
> unzip and stream the results out to shared memory. You'd then have to
> make your IDL program read from shared memory instead of the file. It's
> not the easiest thing in the world if you've never worked with shared
> memory before.
>
> When you said that it would "be costly for my hard drive," what do you
> mean? Are you referring to all the files that would have to be written
> back out to disk all the time or are you concerned with running out of
> disk space?
>
> -Mike

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[Message index]

		Re: Read Zipped files By: loknath on Wed, 30 August 2006 14:36
		Re: Read Zipped files By: Haje Korth on Wed, 30 August 2006 04:51
		Re: Read Zipped files By: Mike Wallace on Tue, 29 August 2006 21:05
		Re: Read Zipped files By: mchinand on Tue, 29 August 2006 13:52
		Re: Read Zipped files By: Haje Korth on Thu, 31 August 2006 05:13

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