[Caml-list] access to the internet

[Caml-list] access to the internet

[Pierre LAFFITTE]

Is it possible from a caml program, to give an internet adress, to get the result in a file or in a set of character to analyse it.

Thank you for your help.

Pierre

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Re: [Caml-list] access to the internet

[Sven Luther]

On Mon, Nov 10, 2003 at 06:56:25PM +0100, Pierre LAFFITTE wrote:
> Is it possible from a caml program, to give an internet adress, to get the result in a file or in a set of character to analyse it.

I have been searching for exactly that some time ago, but i think it is
not possible. Your best guess currently is to call the external wget
program, save it to a temporary file, and then read it in.

I agree that a full url-reading module would be a good addition to the
ocaml library though, java has it for example.

Friendly,

Sven Luther

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Re: [Caml-list] access to the internet

[Richard Jones]

On Tue, Nov 11, 2003 at 10:21:26AM +0100, Sven Luther wrote:
> On Mon, Nov 10, 2003 at 06:56:25PM +0100, Pierre LAFFITTE wrote:
> > Is it possible from a caml program, to give an internet adress, to get the result in a file or in a set of character to analyse it.
> 
> I have been searching for exactly that some time ago, but i think it is
> not possible. Your best guess currently is to call the external wget
> program, save it to a temporary file, and then read it in.
> 
> I agree that a full url-reading module would be a good addition to the
> ocaml library though, java has it for example.

Actually there are two (at least) ways of doing this:

http://sourceforge.net/projects/ocurl/

which is an OCaml wrapper around the Curl library.

Or, you could use some Perl-fu with:

http://www.merjis.com/developers/perl4caml/

which includes a wrapper around the Perl LWP and HTML::TreeBuilder
libraries, so you could not only download the page, but also parse it
into an HTML tree (the HTML::TreeBuilder parser is about the best
parser ever written for parsing fuzzy, incorrect HTML, and there's
really no way you would want reinvent this in OCaml).

Rich.

-- 
Richard Jones. http://www.annexia.org/ http://freshmeat.net/users/rwmj
Merjis Ltd. http://www.merjis.com/ - improving website return on investment
MONOLITH is an advanced framework for writing web applications in C, easier
than using Perl & Java, much faster and smaller, reusable widget-based arch,
database-backed, discussion, chat, calendaring:
http://www.annexia.org/freeware/monolith/

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Re: [Caml-list] access to the internet

[Artem Prisyznuk]

On Tue, 11 Nov 2003 09:39:54 +0000, Richard Jones <rich@annexia.org> wrote:

  I'm preffer netclient library.

  http://www.ocaml-programming.de/programming/netclient.html

-- 
Artem Prysyznuk
tema@sit.kiev.ua

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Re: [Caml-list] access to the internet

[Christophe TROESTLER]

On Tue, 11 Nov 2003, Artem Prisyznuk <tema@sit.kiev.ua> wrote:
> 
>   http://www.ocaml-programming.de/programming/netclient.html

open Http_client.Convenience

let body = http_get url

ChriS

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Re: [Caml-list] access to the internet

[Eric C. Cooper]

On Tue, Nov 11, 2003 at 09:39:54AM +0000, Richard Jones wrote:
> On Tue, Nov 11, 2003 at 10:21:26AM +0100, Sven Luther wrote:
> > I agree that a full url-reading module would be a good addition to the
> > ocaml library though, java has it for example.
> 
> Actually there are two (at least) ways of doing this:
> 
> http://sourceforge.net/projects/ocurl/
> 
> which is an OCaml wrapper around the Curl library.
> 
> Or, you could use some Perl-fu with:
> 
> http://www.merjis.com/developers/perl4caml/

I use a very simple Curl wrapper.  Rather than exposing all the
knobs that libcurl has, it just exports simple get and post
functions:
    exception Error of string
    val get : string -> string
    val post : url:string -> data:string -> string
    val form : string -> (string * string) list -> string

Contact me if you want a copy.

-- 
Eric C. Cooper          e c c @ c m u . e d u

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