Check Image File Size

ruby-talk
1

Hello everybody,

I'm looking for a way that I could insert a URL for an image that is
online and have it tell me what size it is?

I've been messing around with File.size? and file.size and havn't quite
gotten it to work, am I missing something?

Thanks in advance.

···

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2

how about

require 'open-uri'
open(ARGV[0]) { |f| puts f.size }

i'm not sure if this will GET the file even if you don't access its
data, because the size info should already have been communicated
within http, in that case there might be are more convinient way only
using http probing for the size.

g phil

···

On Tue, Apr 08, 2008 at 10:54:23AM +0900, Tj Superfly wrote:

Hello everybody,

I'm looking for a way that I could insert a URL for an image that is
online and have it tell me what size it is?

I've been messing around with File.size? and file.size and havn't quite
gotten it to work, am I missing something?

Thanks in advance.

3

Tj Superfly wrote:

Hello everybody,

I'm looking for a way that I could insert a URL for an image that is
online and have it tell me what size it is?

I've been messing around with File.size? and file.size and havn't quite
gotten it to work, am I missing something?

Have you tried downloading the image? Or at least an HTTP connection?

AFAIK, HTTP doesn't provide an option to detect the size of a file
without downloading (might be wrong, never messed around with HTTP
headers). (S)FTP might, though, but that requires an open FTP connection.

In any case, you'll need an open network connection to the file.

- --
Phillip Gawlowski
Twitter: twitter.com/cynicalryan

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