Hi,

As the curl documentation is a little bit ...wow. http://www.digitalmars.com/d/2.0/phobos/etc_c_curl.html

Do someone have a simple example on how to download a simple file ?

Thank you.

++

On 11/2/2011 3:20 AM, Frédéric Galusik wrote:
> Hi,
>
> As the curl documentation is a little bit ...wow.
> http://www.digitalmars.com/d/2.0/phobos/etc_c_curl.html
>
> Do someone have a simple example on how to download a simple file ?
>
> Thank you.
>
> ++

I don't think we should expect detailed documentation for modules in etc.c. These are interfaces to existing C libraries, not Phobos-specific modules. There's no need to duplicate existing documentation. If you want to learn how to use libcurl, the place to look is the libcurl homepage.


http://curl.haxx.se/libcurl/

On 11/1/11 11:49 PM, Mike Parker wrote:
> On 11/2/2011 3:20 AM, Frédéric Galusik wrote:
>> Hi,
>>
>> As the curl documentation is a little bit ...wow.
>> http://www.digitalmars.com/d/2.0/phobos/etc_c_curl.html
>>
>> Do someone have a simple example on how to download a simple file ?
>>
>> Thank you.
>>
>> ++
>
> I don't think we should expect detailed documentation for modules in
> etc.c. These are interfaces to existing C libraries, not Phobos-specific
> modules. There's no need to duplicate existing documentation. If you
> want to learn how to use libcurl, the place to look is the libcurl
> homepage.
>
>
> http://curl.haxx.se/libcurl/

Wrong.

If you want programmers to use D, give them the solution, now.

It's not that hard to put a little example at the top of the page showing a basic usage.

Ary Manzana:

> Wrong.
> 
> If you want programmers to use D, give them the solution, now.
> 
> It's not that hard to put a little example at the top of the page showing a basic usage.

That wall of links at the top of the page is useless. I don't want to use that C API. This is how you download a file in Python (urllib2 is fully inside the Python standard library) and save it in a local file:

import urllib2
data = urllib2.urlopen("http://server.com/file.html").read()
open('file.html', 'w').write(data)

I think in Clojure or Rebol (http://en.wikipedia.org/wiki/REBOL ) languages it's even simpler.

Bye,
bearophile

etc.c.curl is meant for those that know curl and wish to use it. etc.curl has been delayed but is intended for those that wish to access the internet.

On Tue, 01 Nov 2011 18:20:25 +0000, Frédéric Galusik wrote:

> Hi,
> 
> As the curl documentation is a little bit ...wow. http://www.digitalmars.com/d/2.0/phobos/etc_c_curl.html
> 
> Do someone have a simple example on how to download a simple file ?
> 
> Thank you.

Until the high-level bindings for curl are available in Phobos, I have a little module you could use.

https://github.com/gmfawcett/d-play-libcurl/blob/master/fawcett/curl.d

The default version prints the result to stdout, and there's a commented main() that shows how to get a callback when data is received. If you wanted to download directly into a file, you could do this:

import std.stdio;
import fawcett.curl;

class FileCurl : Curl
{
  this(string url, File f) {
    handle = curl_easy_init();
    set(CURLoption.URL, url);
    set(CURLoption.FILE, cast(void*) f.getFP);
  }

}

void main() {
  auto f = File("/tmp/stuff", "w");
  auto c = new FileCurl("http://example.com/", f);
  c.perform();
}

Note, it doesn't call super() in the constructor, which is bad form, but the current default constructor is overkill for just downloading a file. (It's not a production-quality curl binding.)

Rather than putting my module in 'fawcett/curl.d', you might just want to remove the 'module' line in 'curl.d' and put it in the same directory as your program.

Best,
Graham

"Jesse Phillips" <jessekphillips+d@gmail.com> wrote in message news:j8rj3c$uc2$1@digitalmars.com...
> etc.c.curl is meant for those that know curl and wish to use it. etc.curl has been delayed but is intended for those that wish to access the internet.
>

In the meantime, the proposed etc.curl is at least available somewhere to grab and use, isn't it?

On Wed, 02 Nov 2011 11:10:17 -0400, Nick Sabalausky wrote:

> "Jesse Phillips" <jessekphillips+d@gmail.com> wrote in message news:j8rj3c$uc2$1@digitalmars.com...
>> etc.c.curl is meant for those that know curl and wish to use it. etc.curl has been delayed but is intended for those that wish to access the internet.
>>
>>
> In the meantime, the proposed etc.curl is at least available somewhere to grab and use, isn't it?

Good point. Probably better to grab that than my binding (which I suggested in another post).

https://github.com/jcd/phobos/blob/curl-wrapper/etc/curl.d

docs: http://freeze.steamwinter.com/D/web/phobos/etc_curl.html

reference: http://www.mail-archive.com/digitalmars-d@puremagic.com/ msg63605.html

Best,
Graham

On Wed, 02 Nov 2011 15:23:36 +0000, Graham Fawcett wrote:

> On Wed, 02 Nov 2011 11:10:17 -0400, Nick Sabalausky wrote:
> 
>> "Jesse Phillips" <jessekphillips+d@gmail.com> wrote in message news:j8rj3c$uc2$1@digitalmars.com...
>>> etc.c.curl is meant for those that know curl and wish to use it. etc.curl has been delayed but is intended for those that wish to access the internet.
>>>
>>>
>> In the meantime, the proposed etc.curl is at least available somewhere to grab and use, isn't it?
> 
> Good point. Probably better to grab that than my binding (which I
> suggested in another post).
> 
> https://github.com/jcd/phobos/blob/curl-wrapper/etc/curl.d
> 
> docs: http://freeze.steamwinter.com/D/web/phobos/etc_curl.html
> 

Hm, that 'docs' link is broken, but the github link is still good.

Graham

> reference: http://www.mail-archive.com/digitalmars-d@puremagic.com/ msg63605.html
> 
> Best,
> Graham

Le Wed, 02 Nov 2011 15:23:36 +0000, Graham Fawcett a écrit :

> On Wed, 02 Nov 2011 11:10:17 -0400, Nick Sabalausky wrote:
> 
>> "Jesse Phillips" <jessekphillips+d@gmail.com> wrote in message news:j8rj3c$uc2$1@digitalmars.com...
>>> etc.c.curl is meant for those that know curl and wish to use it. etc.curl has been delayed but is intended for those that wish to access the internet.
>>>
>>>
>> In the meantime, the proposed etc.curl is at least available somewhere to grab and use, isn't it?
> 
> Good point. Probably better to grab that than my binding (which I
> suggested in another post).
> 
> https://github.com/jcd/phobos/blob/curl-wrapper/etc/curl.d
> 
> docs: http://freeze.steamwinter.com/D/web/phobos/etc_curl.html
> 
> reference: http://www.mail-archive.com/digitalmars-d@puremagic.com/ msg63605.html
> 
> Best,
> Graham

Yes, etc.curl is well documented and is really more understandable
Thank you for this wrapper.
Is there a chance that it will become std.curl one day ?

Regards.

++