Get data from (html form) to my cgi app.

I'm new in cgi and i want to know how can i get data send from a html form to my cgi
ahmosaAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

julio011597Commented:
You need a CGI tutorial, unless you are able to tighten a bit and just didn't tell.
0
itamarCommented:
Hi ahmosa,

here is a complete working code from FPiette's. If you have problems with Cut & Paste, I can send it by e-mail. Send your e-mail to itamar@facil.com.
{$APPTYPE CONSOLE}
program cgisimda;

{* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

Author:     François PIETTE
Email:      francois.piette@ping.be  http://www.rtfm.be/fpiette
          2:293/2202@fidonet.org BBS: +32-4-365.13.95
Copyright:  You can use this software freely, at your own risks
Creation:   December 1996
Object:     CgiSimpleData implement a (very basic) CGI program accessing
            data passed by the Web server
            Tested with Microsoft IIS and Microsoft Personal Web Server
Updates:


 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *}
uses
    Windows, SysUtils;

function isxdigit(Ch: char) : Boolean; forward;
function xdigit(Ch: char) : Integer; forward;
function htoin(value: PChar; len: Integer) : Integer; forward;
function GetValue(Msg: String; Name: String; var Val: String): Boolean; forward;


{* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *}
procedure Cgi;
var
    Len               : Integer;
    Count             : Integer;
    Buffer            : array [0..2047] of char;
    NumberOfBytesRead : Integer;
    Nom               : String;
begin
    WriteLn('Content-type: text/html');
    WriteLn;
    WriteLn('<HTML>');
    WriteLn('<HEAD>');
    WriteLn('<TITLE>Hello !</TITLE>');
    WriteLn('</HEAD>');
    WriteLn('<BODY>');
    WriteLn('<P>');

    Len := GetEnvironmentVariable('CONTENT_LENGTH', Buffer, SizeOf(Buffer));
    Buffer[Len] := #0;

    if Len = 0 then
        Count := 0
    else
        Count := StrToInt(Buffer);

    if Count = 0 then
        NumberOfBytesRead := 0
    else
        ReadFile(GetStdHandle(STD_INPUT_HANDLE),
                 Buffer, Count, NumberOfBytesRead, nil);
    Buffer[NumberOfBytesRead] := #0;

    GetValue(Buffer, 'Nom=', Nom);

    WriteLn('<H1>Hello ', Nom, ' !</H1><br><br>');

    WriteLn('CONTENT_LENGTH=', Count, '<br>');
    WriteLn('NumberOfBytesRead=', NumberOfBytesRead, '<br>');
    writeln('Content: ', '''', Buffer, '''<br>');

    WriteLn('</P>');
    WriteLn('</BODY>');
    WriteLn('</HTML>');
end;


{* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *}
function isxdigit(Ch : char) : Boolean;
begin
    Result := (ch in ['0'..'9']) or (ch in ['a'..'z']) or (ch in ['A'..'Z']);
end;


{* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *}
function xdigit(Ch : char) : Integer;
begin
    if ch in ['0'..'9'] then
        Result := ord(Ch) - ord('0')
    else
        Result := (ord(Ch) and 15) + 9;
end;


{* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *}
function htoin(value : PChar; len : Integer) : Integer;
var
    i : Integer;
begin
    Result := 0;
    i      := 0;
    while (i < len) and (Value[i] = ' ') do
        i := i + 1;
    while (i < len) and (isxDigit(Value[i])) do begin
        Result := Result * 16 + xdigit(Value[i]);
        i := i + 1;
    end;
end;


{* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *}
function GetValue(Msg: String; Name: String; var Val: String): Boolean;
var
    I       : Integer;
    NameLen : Integer;
    Ch      : Char;
begin
    Val     := '';
    NameLen := Length(Name);

    I := Pos(Name, Msg);
    if I = 0 then begin
        Result := FALSE;
        Exit;
    end;

    I := I + NameLen;
    while (Msg[I] <> #0) and (Msg[I] <> '&') do begin
        Ch := Msg[I];
        if Ch = '%' then begin
            Ch := chr(htoin(@Msg[I + 1], 2));
            I  := I + 2;
        end
        else if Ch = '+' then
            Ch := ' ';

        Val := Val + Ch;
        Inc(I);
    end;
    Result := TRUE;
end;


{* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *}
begin
    Cgi;
end.

{* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *}

IHTH,
Itamar
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
ahmosaAuthor Commented:
Thank you itamar
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Delphi

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.