{  $Id:$  }
{
 /***************************************************************************
                              idecmdline.pas
                             --------------------
               A unit to manage command lines issue used inside the ide

 ***************************************************************************/

 ***************************************************************************
 *                                                                         *
 *   This source is free software; you can redistribute it and/or modify   *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This code 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.  See the GNU     *
 *   General Public License for more details.                              *
 *                                                                         *
 *   A copy of the GNU General Public License is available on the World    *
 *   Wide Web at <http://www.gnu.org/copyleft/gpl.html>. You can also      *
 *   obtain it by writing to the Free Software Foundation,                 *
 *   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.        *
 *                                                                         *
 ***************************************************************************
 
 Author: Ido Kanner
}

(*
  This unit manages the commandline utils that are used across Lazarus.
  It was created for avoding duplicates and easier access for commandline utils
  that are required by the IDE.
*)
unit IDECmdLine;

{$mode objfpc}{$H+}

interface 

uses 
  Classes, SysUtils; 

procedure ParseCommandLine(aCmdLineParams : TStrings; out IDEPid : Integer);
function GetCommandLineParameters(aCmdLineParams : TStrings;
            isStartLazarus : Boolean = False) : String;

function IsHelpRequested (index : Integer = 1) : Boolean;
function ParamIsOption(ParamIndex : integer; const Option : string) : boolean;
function ParamIsOptionPlusValue(ParamIndex : integer;
            const Option : string; var AValue : string) : boolean;

procedure SetParamOptions(var SkipAutoLoadingLastProject,
                              StartedByStartLazarus,
                              EnableRemoteControl,
                              ShowSplashScreen              : Boolean);

function ExtractCmdLineFilenames : TStrings;

function GetLazarusDirectory : String;
                              
implementation 
uses FileUtil, LazConf, LCLProc, LazarusIDEStrConsts;

procedure ParseCommandLine(aCmdLineParams : TStrings; out IDEPid : Integer);
const
  LazarusPidOpt   = '--lazarus-pid=';
  LazarusDebugOpt = '--debug';
var
  i     : Integer;
  Param : string;
begin
  IDEPid := 0;
  for i := 1 to ParamCount do begin
    Param := ParamStr(i);
    if Param=LazarusDebugOpt then begin
      aCmdLineParams.Add('--debug-log=' +
                         AppendPathDelim(GetPrimaryConfigPath) + 'debug.log');
    end;
    if LeftStr(Param,length(LazarusPidOpt))=LazarusPidOpt then begin
      try
        IDEPid :=
          StrToInt(RightStr(Param,Length(Param)-Length(LazarusPidOpt)));
      except
        DebugLn('Failed to parse %s',[Param]);
        IDEPid := 0;
      end;
    end
    else
      begin
        // Do not add file to the parameter list
        if not (Copy(Param,1,1) = '-') and (FileExists(ExpandFileName(Param))) then
          begin
            DebugLn('%s is a file', [Param]);
            continue;
          end;
          
        DebugLn('Adding "%s" as a parameter', [Param]);
        aCmdLineParams.Add(Param);
      end;
  end;
  // make sure that command line parameters are still
  // double quoted, if they contain spaces
  for i := 0 to aCmdLineParams.Count -1 do
  begin
    if pos(' ',aCmdLineParams[i])>0 then
      aCmdLineParams[i] := '"' + aCmdLineParams[i] + '"';
  end;
end;

function GetCommandLineParameters(aCmdLineParams : TStrings; isStartLazarus : Boolean = False) : String;
var
  i: Integer;
begin
  if isStartLazarus then
    Result := ' --no-splash-screen --started-by-startlazarus'
  else
    Result := '';
  for i := 0 to aCmdLineParams.Count - 1 do
    Result := Result + ' ' + aCmdLineParams[i];
end;

function IsHelpRequested (index : Integer = 1) : Boolean;
begin
  Result := (ParamCount>0)                                   and
            ((CompareText (ParamStr(index), '--help') = 0)   or
             (CompareText (ParamStr(index), '-help')  = 0)   or
             (CompareText (ParamStr(index), '-?')     = 0)   or
             (CompareText (ParamStr(index), '-h')     = 0));
end;

function ParamIsOption(ParamIndex : integer; const Option : string) : boolean;
begin
  Result:=CompareText(ParamStr(ParamIndex),Option) = 0;
end;

function ParamIsOptionPlusValue(ParamIndex : integer;
    const Option : string; var AValue : string) : boolean;
var
  p : String;
begin
 p      := ParamStr(ParamIndex);
 Result := CompareText(LeftStr(p, length(Option)), Option) = 0;
 if Result then
   AValue := copy(p, length(Option) + 1, length(p))
 else
   AValue := '';
end;

procedure SetParamOptions(var SkipAutoLoadingLastProject,
                              StartedByStartLazarus,
                              EnableRemoteControl,
                              ShowSplashScreen              : Boolean);
var
  i      : integer;
  AValue : String;
begin
  for i:= 1 to ParamCount do
    begin
      //DebugLn(['TMainIDE.ParseCmdLineOptions ',i,' "',ParamStr(i),'"']);
      if ParamIsOptionPlusValue(i, PrimaryConfPathOptLong, AValue) then
        begin
          SetPrimaryConfigPath(AValue);
        end;
      if ParamIsOptionPlusValue(i, PrimaryConfPathOptShort, AValue) then
        begin
          SetPrimaryConfigPath(AValue);
        end;
      if ParamIsOptionPlusValue(i, SecondaryConfPathOptLong, AValue) then
        begin
          SetSecondaryConfigPath(AValue);
        end;
      if ParamIsOptionPlusValue(i, SecondaryConfPathOptShort, AValue) then
        begin
          SetSecondaryConfigPath(AValue);
        end;
     if ParamIsOption(i, NoSplashScreenOptLong) or
        ParamIsOption(i, NoSplashScreenOptShort)    then
       begin
         ShowSplashScreen := false;
       end;
       
     if ParamIsOption(i, SkipLastProjectOpt) then
       SkipAutoLoadingLastProject := true;
     if ParamIsOption(i, StartedByStartLazarusOpt) then
       StartedByStartLazarus := true;
     if ParamIsOption(i, EnableRemoteControlOpt) then
       EnableRemoteControl := true;
  end;
end;

function ExtractCmdLineFilenames : TStrings;
var
  i        : LongInt;
  Filename : String;
  
begin
  Result := nil;
  for i := 1 to ParamCount do
   begin
     Filename := ParamStr(i);
     if (Filename = '') or (Filename[1] = '-') then
       break;
     if Result = nil then
       Result := TStringList.Create;
     Result.Insert(0,Filename);
    end;
end;

function GetLazarusDirectory : String;
begin
  Result := ExtractFileDir(ParamStr(0));
end;

end.