fpc/packages/libcurl/examples/teststream.pp

{
    $Id: header,v 1.1 2000/07/13 06:33:45 michael Exp $
    This file is part of the Free Component Library (FCL)
    Copyright (c) 1999-2000 by the Free Pascal development team

    See the file COPYING.FPC, included in this distribution,
    for details about the copyright.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

 **********************************************************************}
{
    This example shows how to use curl and write the result to a TStream.
    It requires the libcurl library. Should work on Unix/Linux.
    It would need modifications to run on Windows.
}

{$mode objfpc}
{$H+}
program teststream;

uses classes,libcurl,{$ifdef windows}ctypes{$else}unixtype{$endif};

Function DoWrite(Ptr : Pointer; Size : size_t; nmemb: size_t; Data : Pointer) : size_t;cdecl;

begin
  Result:=TStream(Data).Write(Ptr^,Size*nmemb);
end;

Var
  f : TFileStream;
  URL : Pchar = 'http://www.freepascal.org';
  hCurl : pCurl;

begin
  F:=TFileStream.Create('fpc.html',fmCreate);
  Try
    hCurl:= curl_easy_init;
    if Assigned(hCurl) then
      begin
      curl_easy_setopt(hCurl,CURLOPT_VERBOSE, [True]);
      curl_easy_setopt(hCurl,CURLOPT_URL,[URL]);
      curl_easy_setopt(hCurl,CURLOPT_WRITEFUNCTION,[@DoWrite]);
      curl_easy_setopt(hCurl,CURLOPT_WRITEDATA,[Pointer(F)]);
      curl_easy_perform(hCurl);
      curl_easy_cleanup(hCurl);
      end;
  Finally
    F.Free;
  end;
end.