On Thu, 18 Aug 2011, Bong Coronel wrote:

> I have a problem with identifying the type of the file being fetched using
> libcurl. Basically I would like to identify if a file is an image file or a
> pdf file. I don't think the content-type will be able to give me this
> information. Would anyone of you advice me how to do this in curl?

1. *nix-like operating systems offer a file command that identifies file type:
    'man file' (and the associated /usr/share/misc/magic)

2. Browsers solve this problem (and more) using "content sniffing". There was
    an effort going on to document how to do it:
    http://tools.ietf.org/html/draft-abarth-mime-sniff-06

-- 
  / daniel.haxx.se
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