{
    $Id$
    This file is part of the Free Pascal Integrated Development Environment
    Copyright (c) 1998 by Berczi Gabor

    Compiler call routines for the IDE

    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.

 **********************************************************************}
{$i globdir.inc}
unit FPCompil;

interface

{ don't redir under linux, because all stdout (also from the ide!) will
  then be redired (PFV) }
{ this should work now correctly because
  RedirDisableAll and RedirEnableAll function are added in fpredir (PM) }

{ $define VERBOSETXT}

{$mode objfpc}

uses
  Objects,
{$ifdef COMPILER_1_0}
  Files,
{$else COMPILER_1_0}
  FInput,
{$endif COMPILER_1_0}
  Drivers,Views,Dialogs,
  WUtils,WViews,WCEdit,
  FPSymbol,
  FPViews;

type
  TCompileMode = (cBuild,cMake,cCompile,cRun);

type
    PCompilerMessage = ^TCompilerMessage;
    TCompilerMessage = object(TMessageItem)
      function GetText(MaxLen: Sw_Integer): String; virtual;
    end;

    PCompilerMessageListBox = ^TCompilerMessageListBox;
    TCompilerMessageListBox = object(TMessageListBox)
      function  GetPalette: PPalette; virtual;
      procedure SelectFirstError;
    end;

    PCompilerMessageWindow = ^TCompilerMessageWindow;
    TCompilerMessageWindow = object(TFPWindow)
      constructor Init;
      procedure   HandleEvent(var Event: TEvent); virtual;
      function    GetPalette: PPalette; virtual;
      procedure   Close;virtual;
      destructor  Done; virtual;
      procedure   SizeLimits(var Min, Max: TPoint); virtual;
      procedure   AddMessage(AClass: longint;const Msg, Module: string; Line, Column: longint);
      procedure   ClearMessages;
      constructor Load(var S: TStream);
      procedure   Store(var S: TStream);
      procedure   SetState(AState: Word; Enable: Boolean); virtual;
      procedure   UpdateCommands; virtual;
    private
      {CompileShowed : boolean;}
      {Mode   : TCompileMode;}
      MsgLB  : PCompilerMessageListBox;
      {CurrST,
      InfoST : PColorStaticText;}
    end;

    PCompilerStatusDialog = ^TCompilerStatusDialog;
    TCompilerStatusDialog = object(TCenterDialog)
      ST    : PAdvancedStaticText;
      KeyST : PColorStaticText;
      constructor Init;
      destructor Done;virtual;
      procedure   Update;
    end;

{$ifdef COMPILER_1_0}
    PFPInputFile = ^TFPInputFile;
    TFPInputFile = object(tinputfile)
      constructor Init(AEditor: PFileEditor);
    {$ifdef FPC}protected{$else}public{$endif}
      function fileopen(const filename: string): boolean; virtual;
      function fileseek(pos: longint): boolean; virtual;
      function fileread(var databuf; maxsize: longint): longint; virtual;
      function fileeof: boolean; virtual;
      function fileclose: boolean; virtual;
    private
      Editor: PFileEditor;
      S: PStream;
    end;
{$else COMPILER_1_0}
    TFPInputFile = class(tinputfile)
      constructor Create(AEditor: PFileEditor);
    {$ifdef FPC}protected{$else}public{$endif}
      function fileopen(const filename: string): boolean; override;
      function fileseek(pos: longint): boolean; override;
      function fileread(var databuf; maxsize: longint): longint; override;
      function fileeof: boolean; override;
      function fileclose: boolean; override;
    private
      Editor: PFileEditor;
      S: PStream;
    end;
{$endif COMPILER_1_0}

const
    CompilerMessageWindow : PCompilerMessageWindow  = nil;
    CompilerStatusDialog  : PCompilerStatusDialog = nil;
    CompileStamp          : longint = 0;
    RestartingDebugger    : boolean = false;

procedure DoCompile(Mode: TCompileMode);
function  NeedRecompile(Mode :TCompileMode; verbose : boolean): boolean;
procedure ParseUserScreen;

procedure RegisterFPCompile;

const
  CompilingHiddenFile : PSourceWindow = nil;

implementation

uses
{$ifdef Unix}
  {$ifdef VER1_0}
    Linux,
  {$else}
    Unix,
  {$endif}
{$endif}
{$ifdef go32v2}
  dpmiexcp,
{$endif}
{$ifdef win32}
  signals,
{$endif}
{$ifdef HasSignal}
  fpcatch,
{$endif HasSignal}
  Dos,
{$ifdef fpc}
  Video,
{$endif fpc}
  StdDlg,App,tokens,
{$ifdef FVISION}
  FVConsts,
{$else}
  Commands,
{$endif}
  CompHook, Compiler, systems, browcol,
  WEditor,
  FPString,FPRedir,FPDesk,
  FPUsrScr,FPHelp,
{$ifndef NODEBUG}FPDebug,{$endif}
  FPConst,FPVars,FPUtils,
  FPCodCmp,FPIntf,FPSwitch;

{$ifndef NOOBJREG}
const
  RCompilerMessageListBox: TStreamRec = (
     ObjType: 1211;
     VmtLink: Ofs(TypeOf(TCompilerMessageListBox)^);
     Load:    @TCompilerMessageListBox.Load;
     Store:   @TCompilerMessageListBox.Store
  );
  RCompilerMessageWindow: TStreamRec = (
     ObjType: 1212;
     VmtLink: Ofs(TypeOf(TCompilerMessageWindow)^);
     Load:    @TCompilerMessageWindow.Load;
     Store:   @TCompilerMessageWindow.Store
  );
{$endif}


procedure ParseUserScreen;
var
  y : longint;
  Text,Attr : String;
  DisplayCompilerWindow : boolean;
  cc: integer;

    procedure SearchBackTrace;
      var AText,ModuleName,st : String;
          row : longint;
      begin
        if pos('  0x',Text)=1 then
          begin
            AText:=Text;
            Delete(Text,1,10);
            While pos(' ',Text)=1 do
              Delete(Text,1,1);
            if pos('of ',Text)>0 then
              begin
                ModuleName:=Copy(Text,pos('of ',Text)+3,255);
                While ModuleName[Length(ModuleName)]=' ' do
                  Delete(ModuleName,Length(ModuleName),1);
              end
            else
              ModuleName:='';
            if pos('line ',Text)>0 then
              begin
                Text:=Copy(Text,Pos('line ',Text)+5,255);
                st:=Copy(Text,1,Pos(' ',Text)-1);
                Val(st,row,cc);
              end
            else
              row:=0;
            CompilerMessageWindow^.AddMessage(V_Fatal,AText
                  ,ModuleName,row,1);
            DisplayCompilerWindow:=true;
          end;
      end;

    procedure InsertInMessages(Const TypeStr : String;_Type : longint;EnableDisplay : boolean);
      var p,p2,col,row : longint;
          St,ModuleName : string;

      begin
        p:=pos(TypeStr,Text);
        p2:=Pos('(',Text);
        if (p>0)  and (p2>0) and (p2<p) then
          begin
            ModuleName:=Copy(Text,1,p2-1);
            st:=Copy(Text,p2+1,255);
            Val(Copy(st,1,pos(',',st)-1),row,cc);
            st:=Copy(st,Pos(',',st)+1,255);
            Val(Copy(st,1,pos(')',st)-1),col,cc);
            CompilerMessageWindow^.AddMessage(_type,Copy(Text,pos(':',Text)+1,255)
              ,ModuleName,row,col);
            If EnableDisplay then
              DisplayCompilerWindow:=true;
          end;
      end;

begin
  if not assigned(UserScreen) then
    exit;
  DisplayCompilerWindow:=false;
  PushStatus('Parsing User Screen');
  CompilerMessageWindow^.Lock;
  for Y:=0 to UserScreen^.GetHeight do
    begin
      UserScreen^.GetLine(Y,Text,Attr);
      SearchBackTrace;
      InsertInMessages(' Fatal:',v_Fatal,true);
      InsertInMessages(' Error:',v_Error,true);
      InsertInMessages(' Warning:',v_Warning,false);
      InsertInMessages(' Note:',v_Note,false);
      InsertInMessages(' Info:',v_Info,false);
      InsertInMessages(' Hint:',v_Hint,false);
    end;
  if DisplayCompilerWindow then
    begin
      if not CompilerMessageWindow^.GetState(sfVisible) then
        CompilerMessageWindow^.Show;
      CompilerMessageWindow^.MakeFirst;
      CompilerMessageWindow^.MsgLB^.SelectFirstError;
    end;
  CompilerMessageWindow^.UnLock;
  PopStatus;
end;

{*****************************************************************************
                               TCompilerMessage
*****************************************************************************}

function TCompilerMessage.GetText(MaxLen: Sw_Integer): String;
var
  ClassS: string[20];
  S: string;
begin
  if TClass=
    V_Fatal       then ClassS:=msg_class_Fatal   else if TClass =
    V_Error       then ClassS:=msg_class_Error   else if TClass =
    V_Normal      then ClassS:=msg_class_Normal  else if TClass =
    V_Warning     then ClassS:=msg_class_Warning else if TClass =
    V_Note        then ClassS:=msg_class_Note    else if TClass =
    V_Hint        then ClassS:=msg_class_Hint
{$ifdef VERBOSETXT}
    else if TClass =
    V_Macro       then ClassS:=msg_class_macro   else if TClass =
    V_Procedure   then ClassS:=msg_class_procedure else if TClass =
    V_Conditional then ClassS:=msg_class_conditional else if TClass =
    V_Info        then ClassS:=msg_class_info    else if TClass =
    V_Status      then ClassS:=msg_class_status  else if TClass =
    V_Used        then ClassS:=msg_class_used    else if TClass =
    V_Tried       then ClassS:=msg_class_tried   else if TClass =
    V_Debug       then ClassS:=msg_class_debug
  else
   ClassS:='???';
{$else}
  else
   ClassS:='';
{$endif}
  if ClassS<>'' then
   ClassS:=RExpand(ClassS,0)+': ';
  if assigned(Module) and
     (TClass<=V_ShowFile)
     {and (status.currentsource<>'') and (status.currentline>0)} then
    begin
      if Row>0 then
       begin
         if Col>0 then
          S:=NameAndExtOf(Module^)+'('+IntToStr(Row)+','+IntToStr(Col)+') '+ClassS
         else
          S:=NameAndExtOf(Module^)+'('+IntToStr(Row)+') '+ClassS;
       end
      else
       S:=NameAndExtOf(Module^)+'('+IntToStr(Row)+') '+ClassS
    end
  else
    S:=ClassS;
  if assigned(Text) then
    S:=S+Text^;
  if length(S)>MaxLen then
    S:=copy(S,1,MaxLen-2)+'..';
  GetText:=S;
end;


{*****************************************************************************
                             TCompilerMessageListBox
*****************************************************************************}

function TCompilerMessageListBox.GetPalette: PPalette;
const
  P: string[length(CBrowserListBox)] = CBrowserListBox;
begin
  GetPalette:=@P;
end;

procedure TCompilerMessageListBox.SelectFirstError;
  function IsError(P : PCompilerMessage) : boolean;
    begin
      IsError:=(P^.TClass and (V_Fatal or V_Error))<>0;
    end;
  var
    P : PCompilerMessage;
begin
  P:=List^.FirstThat(@IsError);
  If Assigned(P) then
    Begin
      FocusItem(List^.IndexOf(P));
      DrawView;
    End;
end;


{*****************************************************************************
                                TCompilerMessageWindow
*****************************************************************************}

constructor TCompilerMessageWindow.Init;
var R: TRect;
    HSB,VSB: PScrollBar;
begin
  Desktop^.GetExtent(R);
  R.A.Y:=R.B.Y-7;
  inherited Init(R,dialog_compilermessages,{SearchFreeWindowNo}wnNoNumber);
  HelpCtx:=hcCompilerMessagesWindow;

  AutoNumber:=true;

  HSB:=StandardScrollBar(sbHorizontal+sbHandleKeyboard);
  HSB^.GrowMode:=gfGrowLoY+gfGrowHiX+gfGrowHiY;
  Insert(HSB);
  VSB:=StandardScrollBar(sbVertical+sbHandleKeyboard);
  VSB^.GrowMode:=gfGrowLoX+gfGrowHiX+gfGrowHiY;
  Insert(VSB);

  GetExtent(R);
  R.Grow(-1,-1);
  New(MsgLB, Init(R, HSB, VSB));

  MsgLB^.GrowMode:=gfGrowHiX+gfGrowHiY;
  Insert(MsgLB);
  CompilerMessageWindow:=@self;
end;


procedure TCompilerMessageWindow.AddMessage(AClass: longint;const Msg, Module: string; Line, Column: longint);
begin
  if AClass>=V_Info then
    Line:=0;
  MsgLB^.AddItem(New(PCompilerMessage,Init(AClass, Msg, MsgLB^.AddModuleName(Module), Line, Column)));
  if (@Self=CompilerMessageWindow) and ((AClass = V_fatal) or (AClass = V_Error)) then
    begin
      if not GetState(sfVisible) then
        Show;
      if Desktop^.First<>PView(CompilerMessageWindow) then
        MakeFirst;
    end;
end;


procedure TCompilerMessageWindow.ClearMessages;
begin
  MsgLB^.Clear;
  ReDraw;
end;


{procedure TCompilerMessageWindow.Updateinfo;
begin
  if CompileShowed then
   begin
     InfoST^.SetText(
       RExpand(' Main file : '#1#$7f+Copy(SmartPath(MainFile),1,39),40)+#2+
         'Total lines  : '#1#$7e+IntToStr(Status.CompiledLines)+#2#13+
       RExpand(' Target    : '#1#$7f+KillTilde(TargetSwitches^.ItemName(TargetSwitches^.GetCurrSel)),40)+#2+
         'Total errors : '#1#$7e+IntToStr(Status.ErrorCount)
     );
     if status.currentline>0 then
      CurrST^.SetText(' Status: '#1#$7e+status.currentsource+'('+IntToStr(status.currentline)+')'#2)
     else
      CurrST^.SetText(' Status: '#1#$7e+status.currentsource+#2);
   end;
  ReDraw;
end;}


procedure TCompilerMessageWindow.HandleEvent(var Event: TEvent);
begin
  case Event.What of
    evBroadcast :
      case Event.Command of
        cmListFocusChanged :
          if Event.InfoPtr=MsgLB then
            Message(Application,evBroadcast,cmClearLineHighlights,@Self);
      end;
  end;
  inherited HandleEvent(Event);
end;


procedure TCompilerMessageWindow.SizeLimits(var Min, Max: TPoint);
begin
  inherited SizeLimits(Min,Max);
  Min.X:=20;
  Min.Y:=4;
end;


procedure TCompilerMessageWindow.Close;
begin
  Hide;
end;


function TCompilerMessageWindow.GetPalette: PPalette;
const
  S : string[length(CBrowserWindow)] = CBrowserWindow;
begin
  GetPalette:=@S;
end;


constructor TCompilerMessageWindow.Load(var S: TStream);
begin
  inherited Load(S);
  GetSubViewPtr(S,MsgLB);
end;


procedure TCompilerMessageWindow.Store(var S: TStream);
begin
  if MsgLB^.List=nil then
    MsgLB^.NewList(New(PCollection, Init(100,100)));
  inherited Store(S);
  PutSubViewPtr(S,MsgLB);
end;

procedure TCompilerMessageWindow.UpdateCommands;
var Active: boolean;
begin
  Active:=GetState(sfActive);
  SetCmdState(CompileCmds,Active);
  Message(Application,evBroadcast,cmCommandSetChanged,nil);
end;

procedure TCompilerMessageWindow.SetState(AState: Word; Enable: Boolean);
var OldState: word;
begin
  OldState:=State;
  inherited SetState(AState,Enable);
  if ((AState and sfActive)<>0) and (((OldState xor State) and sfActive)<>0) then
    UpdateCommands;
end;

destructor TCompilerMessageWindow.Done;
begin
  CompilerMessageWindow:=nil;
  inherited Done;
end;


{****************************************************************************
                          CompilerStatusDialog
****************************************************************************}

constructor TCompilerStatusDialog.Init;
var R: TRect;
begin
  R.Assign(0,0,50,11);
  ClearFormatParams; AddFormatParamStr(KillTilde(SwitchesModeName[SwitchesMode]));
  inherited Init(R, FormatStrF(dialog_compilingwithmode, FormatParams));
  GetExtent(R); R.B.Y:=11;
  R.Grow(-3,-2);
  New(ST, Init(R, ''));
  Insert(ST);
  GetExtent(R); R.B.Y:=11;
  R.Grow(-1,-1); R.A.Y:=R.B.Y-1;
  New(KeyST, Init(R, '', Blue*16+White+longint($80+Blue*16+White)*256,true));
  Insert(KeyST);
  { Reset Status infos see bug 1585 }
  Fillchar(Status,SizeOf(Status),#0);
end;

destructor TCompilerStatusDialog.Done;
begin
  if @Self=CompilerStatusDialog then
    CompilerStatusDialog:=nil;
  Inherited Done;
end;

procedure TCompilerStatusDialog.Update;
var
  StatusS,KeyS: string;
const
  MaxFileNameSize = 46;
begin
{$ifdef TEMPHEAP}
  switch_to_base_heap;
{$endif TEMPHEAP}
  case CompilationPhase of
    cpCompiling :
      begin
        ClearFormatParams;
        if Status.Compiling_current then
          begin
            AddFormatParamStr(ShrinkPath(SmartPath(Status.Currentsourcepath+Status.CurrentSource),
              MaxFileNameSize - Length(msg_compilingfile)));
            StatusS:=FormatStrF(msg_compilingfile,FormatParams);
          end
        else
          begin
            if Status.CurrentSource='' then
              StatusS:=''
            else
              begin
                StatusS:=ShrinkPath(SmartPath(DirAndNameOf(Status.Currentsourcepath+Status.CurrentSource)),
                  MaxFileNameSize-Length(msg_loadingunit));
                AddFormatParamStr(StatusS);
                StatusS:=FormatStrF(msg_loadingunit,FormatParams);
              end;
          end;
        KeyS:=msg_hint_pressesctocancel;
      end;
    cpLinking   :
      begin
        ClearFormatParams;
        AddFormatParamStr(ShrinkPath(ExeFile,
          MaxFileNameSize-Length(msg_linkingfile)));
        StatusS:=FormatStrF(msg_linkingfile,FormatParams);
        KeyS:=msg_hint_pleasewait;
      end;
    cpDone      :
      begin
        StatusS:=msg_compiledone;
        KeyS:=msg_hint_compilesuccessfulpressenter;
      end;
    cpFailed    :
      begin
        StatusS:=msg_failedtocompile;
        KeyS:=msg_hint_compilefailed;
      end;
    cpAborted    :
      begin
        StatusS:=msg_compilationaborted;
        KeyS:=msg_hint_compileaborted;
      end;
  end;
  ClearFormatParams;
  AddFormatParamStr(ShrinkPath(SmartPath(MainFile),
    MaxFileNameSize-Length('Main file: %s')));
  AddFormatParamStr(StatusS);
  AddFormatParamStr(KillTilde(TargetSwitches^.ItemName(TargetSwitches^.GetCurrSel)));
  AddFormatParamInt(Status.CurrentLine);
  AddFormatParamInt(MemAvail div 1024);
  AddFormatParamInt(Status.CompiledLines);
  AddFormatParamInt(Status.ErrorCount);
  ST^.SetText(
   FormatStrF(
    'Main file: %s'#13+
    '%s'+#13#13+
    'Target: %12s    '+     'Line number: %7d'+#13+
    'Free memory: %6dK    '+'Total lines: %7d'+#13+
    'Total errors: %5d',
   FormatParams)
  );
  KeyST^.SetText(^C+KeyS);
{$ifdef TEMPHEAP}
  switch_to_temp_heap;
{$endif TEMPHEAP}
end;


{****************************************************************************
                               Compiler Hooks
****************************************************************************}

function CompilerStatus: boolean; {$ifndef FPC}far;{$endif}
  var
     event : tevent;
begin
  GetKeyEvent(Event);
  if (Event.What=evKeyDown) and (Event.KeyCode=kbEsc) then
    begin
       CompilationPhase:=cpAborted;
       { update info messages }
       if assigned(CompilerStatusDialog) then
        begin
{$ifdef redircompiler}
          RedirDisableAll;
{$endif}
          CompilerStatusDialog^.Update;
{$ifdef redircompiler}
          RedirEnableAll;
{$endif}
        end;
       CompilerStatus:=true;
       exit;
    end;
{ only display line info every 100 lines, ofcourse all other messages
  will be displayed directly }
  if (status.currentline mod 100=0) then
   begin
     { update info messages }
{$ifdef redircompiler}
          RedirDisableAll;
{$endif}
     if assigned(CompilerStatusDialog) then
      CompilerStatusDialog^.Update;
{$ifdef redircompiler}
          RedirEnableAll;
{$endif}
     { update memory usage }
     { HeapView^.Update; }
   end;
  CompilerStatus:=false;
end;

const
  LONGJMPCALLED = -1;

procedure CompilerStop; {$ifndef FPC}far;{$endif}
begin
{$ifndef GABOR}
{$ifdef HasSignal}
  if StopJmpValid then
    Longjmp(StopJmp,LONGJMPCALLED)
  else
    Halt(1);
{$endif}
{$endif}
end;

Function  CompilerGetNamedFileTime(const filename : string) : Longint; {$ifndef FPC}far;{$endif}
var t: longint;
    W: PSourceWindow;
begin
  W:=EditorWindowFile(FExpand(filename));
  if Assigned(W) and (W^.Editor^.GetModified) then
    t:=Now
  else
    t:=def_getnamedfiletime(filename);
  CompilerGetNamedFileTime:=t;
end;

{$ifdef COMPILER_1_0}
function CompilerOpenInputFile(const filename: string): pinputfile; {$ifndef FPC}far;{$endif}
var f: pinputfile;
    W: PSourceWindow;
begin
  if assigned(CompilingHiddenFile) and
     (NameandExtof(filename)=CompilingHiddenFile^.Editor^.Filename) then
    W:=CompilingHiddenFile
  else
    W:=EditorWindowFile(FExpand(filename));
  if Assigned(W) and (W^.Editor^.GetModified) then
    f:=new(PFPInputFile, Init(W^.Editor))
  else
    f:={$ifndef GABOR}def_openinputfile(filename){$else}nil{$endif};
  if assigned(W) then
    W^.Editor^.CompileStamp:=CompileStamp;
  CompilerOpenInputFile:=f;
end;
{$else COMPILER_1_0}
function CompilerOpenInputFile(const filename: string): tinputfile; {$ifndef FPC}far;{$endif}
var f: tinputfile;
    W: PSourceWindow;
begin
  if assigned(CompilingHiddenFile) and
     (NameandExtof(filename)=CompilingHiddenFile^.Editor^.Filename) then
    W:=CompilingHiddenFile
  else
    W:=EditorWindowFile(FExpand(filename));
  if Assigned(W) and (W^.Editor^.GetModified) then
    f:=TFPInputFile.Create(W^.Editor)
  else
    f:={$ifndef GABOR}def_openinputfile(filename){$else}nil{$endif};
  if assigned(W) then
    W^.Editor^.CompileStamp:=CompileStamp;
  CompilerOpenInputFile:=f;
end;
{$endif COMPILER_1_0}

function CompilerComment(Level:Longint; const s:string):boolean; {$ifndef FPC}far;{$endif}
begin
{$ifdef TEMPHEAP}
  switch_to_base_heap;
{$endif TEMPHEAP}
  CompilerComment:=false;
{$ifndef DEV}
  if (status.verbosity and Level)=Level then
{$endif}
   begin
{$ifdef redircompiler}
     RedirDisableAll;
{$endif}

     if not CompilerMessageWindow^.GetState(sfVisible) then
       CompilerMessageWindow^.Show;
     if Desktop^.First<>PView(CompilerMessageWindow) then
       CompilerMessageWindow^.MakeFirst;
     CompilerMessageWindow^.AddMessage(Level,S,status.currentsourcepath+status.currentsource,
       status.currentline,status.currentcolumn);
     { update info messages }
     if assigned(CompilerStatusDialog) then
      CompilerStatusDialog^.Update;
{$ifdef DEBUG}
 {$ifndef NODEBUG}
//     def_gdb_stop(level);
 {$endif}
{$endif DEBUG}
{$ifdef redircompiler}
      RedirEnableAll;
{$endif}
     { update memory usage }
     { HeapView^.Update; }
   end;
{$ifdef TEMPHEAP}
  switch_to_temp_heap;
{$endif TEMPHEAP}
end;


{****************************************************************************
                                 DoCompile
****************************************************************************}

{ This function must return '' if
  "Options|Directories|Exe and PPU directory" is empty }
function GetExePath: string;
var Path: string;
    I: Sw_integer;
begin
  Path:='';
  if DirectorySwitches<>nil then
    with DirectorySwitches^ do
    for I:=0 to ItemCount-1 do
      begin
        if ItemParam(I)='-FE' then
          begin
            Path:=GetStringItem(I);
            Break;
          end;
      end;
  if Path<>'' then
    GetExePath:=CompleteDir(FExpand(Path))
  else
    GetExePath:='';
end;

function GetMainFile(Mode: TCompileMode): string;
var FileName: string;
    P : PSourceWindow;
begin
  if assigned(CompilingHiddenFile) then
    P:=CompilingHiddenFile
  else
    P:=Message(Desktop,evBroadcast,cmSearchWindow,nil);
  if (PrimaryFileMain='') and (P=nil) then
    FileName:='' { nothing to compile }
  else
    begin
      if (PrimaryFileMain<>'') and (Mode<>cCompile) then
        FileName:=PrimaryFileMain
      else if assigned(P) then
        begin
          FileName:=P^.Editor^.FileName;
          if FileName='' then
            begin
              P^.Editor^.SaveAsk(true);
              FileName:=P^.Editor^.FileName;
            end;
        end
      else
        FileName:='';
    end;
  If (FileName<>'') then
    FileName:=FixFileName(FExpand(FileName));
  GetMainFile:=FileName;
end;

procedure ResetErrorMessages;
  procedure ResetErrorLine(P: PView); {$ifndef FPC}far;{$endif}
  begin
    if assigned(P) and
       (TypeOf(P^)=TypeOf(TSourceWindow)) then
       PSourceWindow(P)^.Editor^.SetErrorMessage('');
  end;
begin
  Desktop^.ForEach(@ResetErrorLine);
end;


procedure DoCompile(Mode: TCompileMode);

  function IsExitEvent(E: TEvent): boolean;
  begin
    { following suggestion by Harsha Senanayake }
    IsExitEvent:=(E.What=evKeyDown);
  end;
  function GetTargetExeExt : string;
    begin
{$ifdef COMPILER_1_0}
        GetTargetExeExt:=target_os.exeext;
{$else COMPILER_1_0}
        GetTargetExeExt:=target_info.exeext;
{$endif COMPILER_1_0}
     end;
var
  s,FileName: string;
  ErrFile : Text;
  MustRestartDebugger,
  StoreStopJumpValid : boolean;
  StoreStopJmp : Jmp_buf;
  StoreExitProc : pointer;
  JmpRet,Error,LinkErrorCount : longint;
  E : TEvent;
  DummyView: PView;
  PPasFile : string[64];
begin
  AskRecompileIfModifiedFlag:=true;
{ Get FileName }
  FileName:=GetMainFile(Mode);
  if FileName='' then
    begin
      ErrorBox(msg_nothingtocompile,nil);
      Exit;
    end else
  { THis is not longer necessary as unsaved files are loaded from a memorystream,
    and with the file as primaryfile set it is already incompatible with itself
   if FileName='*' then
    begin
      ErrorBox(msg_cantcompileunsavedfile,nil);
      Exit;
    end; }
  PushStatus('Beginning compilation...');
{ Show Compiler Messages Window }
{  if not CompilerMessageWindow^.GetState(sfVisible) then
   CompilerMessageWindow^.Show;
  CompilerMessageWindow^.MakeFirst;}
  CompilerMessageWindow^.ClearMessages;
  { Tell why we compile }
  NeedRecompile(Mode,true);

  MainFile:=FileName;
  SetStatus('Writing switches to file...');
  WriteSwitches(SwitchesPath);
  { leaving open browsers leads to crashes !! (PM) }
  SetStatus('Preparing symbol info...');
  CloseAllBrowsers;
  if ((DesktopFileFlags and dfSymbolInformation)<>0) then
    WriteSymbolsFile(BrowserName);
{  MainFile:=FixFileName(FExpand(FileName));}
  SetStatus('Preparing to compile...'+NameOf(MainFile));
  If GetEXEPath<>'' then
    EXEFile:=FixFileName(GetEXEPath+NameOf(MainFile)+GetTargetExeExt)
  else
    EXEFile:=DirOf(MainFile)+NameOf(MainFile)+GetTargetExeExt;
{ Reset }
  CtrlBreakHit:=false;
{ Create Compiler Status Dialog }
  CompilationPhase:=cpCompiling;
  if not assigned(CompilingHiddenFile) then
    begin
      New(CompilerStatusDialog, Init);
      CompilerStatusDialog^.SetState(sfModal,true);
      { disable window closing }
      CompilerStatusDialog^.Flags:=CompilerStatusDialog^.Flags and not wfclose;
      Application^.Insert(CompilerStatusDialog);
      CompilerStatusDialog^.Update;
    end;
{ hook compiler output }
{$ifdef TP}
  do_status:=CompilerStatus;
  do_stop:=CompilerStop;
  do_comment:=CompilerComment;
  {$ifndef GABOR}do_openinputfile:=CompilerOpenInputFile;{$endif}
  do_getnamedfiletime:=CompilerGetNamedFileTime;
{$else not TP}
  do_status:=@CompilerStatus;
  do_stop:=@CompilerStop;
  do_comment:=@CompilerComment;
  do_openinputfile:=@CompilerOpenInputFile;
  do_getnamedfiletime:=@CompilerGetNamedFileTime;
{$endif TP}
  do_initsymbolinfo:={$ifdef fpc}@{$endif}InitBrowserCol;
  do_donesymbolinfo:={$ifdef fpc}@{$endif}DoneBrowserCol;
  do_extractsymbolinfo:={$ifdef fpc}@{$endif}CreateBrowserCol;
{ Compile ! }
{$ifdef redircompiler}
  ChangeRedirOut(FPOutFileName,false);
  ChangeRedirError(FPErrFileName,false);
{$endif}
{$ifdef TEMPHEAP}
  split_heap;
  switch_to_temp_heap;
{$endif TEMPHEAP}
  { insert "" around name so that spaces are allowed }
  { only supported in compiler after 2000/01/14 PM   }
  if pos(' ',FileName)>0 then
    FileName:='"'+FileName+'"';
  if mode=cBuild then
    FileName:='-B '+FileName;
  { tokens are created and distroed by compiler.compile !! PM }
  DoneTokens;
{$ifdef COMPILER_1_0}
  PPasFile:='ppas'+source_os.scriptext;
{$else COMPILER_1_0}
  PPasFile:='ppas'+source_info.scriptext;
{$endif COMPILER_1_0}
  WUtils.DeleteFile(GetExePath+PpasFile);
  SetStatus('Compiling...');
{$ifndef GABOR}
{$ifdef HasSignal}
  StoreStopJumpValid:=StopJmpValid;
  StoreStopJmp:=StopJmp;
{$endif HasSignal}
  StoreExitProc:=ExitProc;
{$ifdef HasSignal}
  StopJmpValid:=true;
  JmpRet:=SetJmp(StopJmp);
{$else}
  JmpRet:=0;
{$endif HasSignal}
  if JmpRet=0 then
    begin
      inc(CompileStamp);
      ResetErrorMessages;
{$ifndef NODEBUG}
      MustRestartDebugger:=false;
      if assigned(Debugger) then
        if Debugger^.HasExe then
          begin
            Debugger^.Reset;
            MustRestartDebugger:=true;
          end;
{$endif NODEBUG}
      FpIntF.Compile(FileName,SwitchesPath);
      SetStatus('Finished compiling...');
    end
  else
    begin
      { We need to restore Exitproc to the value
        it was before calling FPintF.compile PM }
      ExitProc:=StoreExitProc;
      Inc(status.errorCount);
{$ifdef HasSignal}
      Case JmpRet of
        LONGJMPCALLED : s:='Error';
        SIGINT : s := 'Interrupted by Ctrl-C';
        SIGILL : s := 'Illegal instruction';
        SIGSEGV : s := 'Signal Segmentation violation';
        SIGFPE : s:='Floating point signal';
        else
          s:='Undetermined signal '+inttostr(JmpRet);
      end;
      CompilerMessageWindow^.AddMessage(V_error,s+' during compilation','',0,0);
{$endif HasSignal}
      if JmpRet<>LONGJMPCALLED then
        begin
          CompilerMessageWindow^.AddMessage(V_error,'Long jumped out of compilation...','',0,0);
          SetStatus('Long jumped out of compilation...');
        end;
    end;
{$ifdef HasSignal}
  StopJmpValid:=StoreStopJumpValid;
  StopJmp:=StoreStopJmp;
{$endif HasSignal}
{$endif}
  { tokens are created and distroyed by compiler.compile !! PM }
  InitTokens;
  if LinkAfter and
     ExistsFile(GetExePath+PpasFile) and
     (CompilationPhase<>cpAborted) and
     (status.errorCount=0) then
    begin
       CompilationPhase:=cpLinking;
       if assigned(CompilerStatusDialog) then
         CompilerStatusDialog^.Update;
       SetStatus('Assembling and/or linking...');
{$ifndef redircompiler}
       { At least here we want to catch output
        of batch file PM }
       ChangeRedirOut(FPOutFileName,false);
       ChangeRedirError(FPErrFileName,false);
{$endif}
{$ifdef Unix}
       Shell(GetExePath+PpasFile);
       Error:=LinuxError;
{$else}
       DosExecute(GetEnv('COMSPEC'),'/C '+GetExePath+PpasFile);
       Error:=DosError;
{$endif}
       SetStatus('Finished linking...');
       RestoreRedirOut;
       RestoreRedirError;
       if Error<>0 then
         Inc(status.errorCount);
       if Status.IsExe and not Status.IsLibrary and not ExistsFile(EXEFile) then
         begin
           Inc(status.errorCount);
           ClearFormatParams; AddFormatParamStr(ExeFile);
           CompilerMessageWindow^.AddMessage(V_error,FormatStrF(msg_couldnotcreatefile,FormatParams),'',0,0);
         {$I-}
           Assign(ErrFile,FPErrFileName);
           Reset(ErrFile);
           if EatIO<>0 then
             ErrorBox(FormatStrStr(msg_cantopenfile,FPErrFileName),nil)
           else
           begin
             LinkErrorCount:=0;
             While not eof(ErrFile) and (LinkErrorCount<25) do
               begin
                 readln(ErrFile,s);
                 CompilerMessageWindow^.AddMessage(V_error,s,'',0,0);
                 inc(LinkErrorCount);
               end;
             if not eof(ErrFile) then
             begin
               ClearFormatParams; AddFormatParamStr(FPErrFileName);
               CompilerMessageWindow^.AddMessage(V_error,
                 FormatStrF(msg_therearemoreerrorsinfile,FormatParams),'',0,0);
             end;

             Close(ErrFile);
           end;
           EatIO;
         {$I+}
         end
       else if error=0 then
         WUtils.DeleteFile(GetExePath+PpasFile);
    end;
{$ifdef TEMPHEAP}
  switch_to_base_heap;
{$endif TEMPHEAP}
{$ifdef redircompiler}
  RestoreRedirOut;
  RestoreRedirError;
{$endif}
  PopStatus;
{ Set end status }
  if not (CompilationPhase in [cpAborted,cpFailed]) then
    if (status.errorCount=0) then
      begin
        CompilationPhase:=cpDone;
        LastCompileTime := cardinal(Now);
      end
    else
      CompilationPhase:=cpFailed;
{ Show end status }
  { reenable window closing }
  if assigned(CompilerStatusDialog) then
    begin
      CompilerStatusDialog^.Flags:=CompilerStatusDialog^.Flags or wfclose;
      CompilerStatusDialog^.Update;
      CompilerStatusDialog^.ReDraw;
      CompilerStatusDialog^.SetState(sfModal,false);
      if ((CompilationPhase in [cpAborted,cpDone,cpFailed]) or (ShowStatusOnError))
        and ((Mode<>cRun) or (CompilationPhase<>cpDone)) then
       repeat
         CompilerStatusDialog^.GetEvent(E);
         if IsExitEvent(E)=false then
          CompilerStatusDialog^.HandleEvent(E);
       until IsExitEvent(E) or not assigned(CompilerStatusDialog);
       {if IsExitEvent(E) then
         Application^.PutEvent(E);}
      if assigned(CompilerStatusDialog) then
        begin
          Application^.Delete(CompilerStatusDialog);
          Dispose(CompilerStatusDialog, Done);
        end;
    end;
  CompilerStatusDialog:=nil;
{ end compilation returns true if the messagewindow should be removed }
  if CompilationPhase=cpDone then
   begin
     CompilerMessageWindow^.Hide;
     { This is the last compiled main file }
     PrevMainFile:=MainFile;
     MainHasDebugInfo:=DebugInfoSwitches^.GetCurrSelParam<>'-';
   end;
{ Update the app }
  Message(Application,evCommand,cmUpdate,nil);
{$ifdef TEMPHEAP}
  releasetempheap;
  unsplit_heap;
{$endif TEMPHEAP}
  DummyView:=Desktop^.First;
  while (DummyView<>nil) and (DummyView^.GetState(sfVisible)=false) do
  begin
    DummyView:=DummyView^.NextView;
  end;
  with DummyView^ do
   if GetState(sfVisible) then
    begin
      SetState(sfSelected,false);
      SetState(sfSelected,true);
    end;
  if Assigned(CompilerMessageWindow) then
    with CompilerMessageWindow^ do
      begin
        if GetState(sfVisible) then
          begin
            SetState(sfSelected,false);
            SetState(sfSelected,true);
          end;
        if (status.errorCount>0) then
          MsgLB^.SelectFirstError;
      end;
  { ^^^ we need this trick to reactivate the desktop }
  EditorModified:=false;
{$ifndef NODEBUG}
  if MustRestartDebugger then
    InitDebugger;
{$endif NODEBUG}
  { In case we have something that the compiler touched }
  AskToReloadAllModifiedFiles;
  { Try to read Browser info in again if compilation failure !! }
  if Not Assigned(Modules) and (CompilationPhase<>cpDone) and
     ((DesktopFileFlags and dfSymbolInformation)<>0) then
    ReadSymbolsFile(BrowserName);
  if UseAllUnitsInCodeComplete and not assigned(CompilingHiddenFile) then
    AddAvailableUnitsToCodeComplete(false);
end;

function NeedRecompile(Mode :TCompileMode; verbose : boolean): boolean;
var Need: boolean;
    I: sw_integer;
    SF: PSourceFile;
    SourceTime,PPUTime,ObjTime: longint;
    W: PSourceWindow;
begin
  if Assigned(SourceFiles)=false then
     Need:={(EditorModified=true)}true
  else
    begin
      Need:=(PrevMainFile<>GetMainFile(Mode)) and (PrevMainFile<>'');
      if Need then
        begin
          if verbose then
          begin
            ClearFormatParams; AddFormatParamStr(GetMainFile(Mode));
            CompilerMessageWindow^.AddMessage(V_info,
              FormatStrF(msg_firstcompilationof,FormatParams),
              '',0,0);
          end;
        end
      else
        for I:=0 to SourceFiles^.Count-1 do
          begin
            SF:=SourceFiles^.At(I);
            SourceTime:=GetFileTime(SF^.GetSourceFileName);
            PPUTime:=GetFileTime(SF^.GetPPUFileName);
            ObjTime:=GetFileTime(SF^.GetObjFileName);
{            writeln('S: ',SF^.GetSourceFileName,' - ',SourceTime);
            writeln('P: ',SF^.GetPPUFileName,' - ',PPUTime);
            writeln('O: ',SF^.GetObjFileName,' - ',ObjTime);
            writeln('------');}
            { some units don't generate object files }
            W:=EditorWindowFile(SF^.GetSourceFileName);
            if (SourceTime<>-1) then
              if ((SourceTime>PPUTime) or
                 ((SourceTime>ObjTime) and
                 (ObjTime<>-1))) or
                 (assigned(W) and (W^.Editor^.CompileStamp<0)) then
                begin
                  Need:=true;
                  if verbose then
                  begin
                    ClearFormatParams; AddFormatParamStr(SF^.GetSourceFileName);
                    CompilerMessageWindow^.AddMessage(V_info,
                      FormatStrF(msg_recompilingbecauseof,FormatParams),
                      SF^.GetSourceFileName,1,1);
                  end;
                  Break;
                end;
          end;
{      writeln('Need?', Need); system.readln;}
    end;

  NeedRecompile:=Need;
end;


{$ifdef COMPILER_1_0}
constructor TFPInputFile.Init(AEditor: PFileEditor);
begin
  if not Assigned(AEditor) then Fail;
  if inherited Init(AEditor^.FileName)=false then
    Fail;
  Editor:=AEditor;
end;
{$else COMPILER_1_0}
constructor TFPInputFile.Create(AEditor: PFileEditor);
begin
  if not Assigned(AEditor) then Fail;
  if inherited Create(AEditor^.FileName)=nil then
    Fail;
  Editor:=AEditor;
end;
{$endif COMPILER_1_0}

function TFPInputFile.fileopen(const filename: string): boolean;
var OK: boolean;
begin
  S:=New(PMemoryStream, Init(0,0));
  OK:=Assigned(S) and (S^.Status=stOK);
  if OK then OK:=Editor^.SaveToStream(S);
  if OK then
    S^.Seek(0)
  else
    begin
      if Assigned(S) then Dispose(S, Done);
      S:=nil;
    end;
  fileopen:=OK;
end;

function TFPInputFile.fileseek(pos: longint): boolean;
var OK: boolean;
begin
  OK:=assigned(S);
  if OK then
  begin
    S^.Reset;
    S^.Seek(pos);
    OK:=(S^.Status=stOK);
  end;
  fileseek:=OK;
end;

function TFPInputFile.fileread(var databuf; maxsize: longint): longint;
var
    size: longint;
begin
  if not assigned(S) then size:=0 else
  begin
    size:=min(maxsize,(S^.GetSize-S^.GetPos));
    S^.Read(databuf,size);
    if S^.Status<>stOK then size:=0;
  end;
  fileread:=size;
end;

function TFPInputFile.fileeof: boolean;
var EOF: boolean;
begin
  EOF:=not assigned(S);
  if not EOF then
    EOF:=(S^.Status<>stOK) or (S^.GetPos=S^.GetSize);
  fileeof:=EOF;
end;

function TFPInputFile.fileclose: boolean;
var OK: boolean;
begin
  OK:=assigned(S);
  if OK then
  begin
    S^.Reset;
    Dispose(S, Done);
    S:=nil;
    OK:=true;
  end;
  fileclose:=OK;
end;

procedure RegisterFPCompile;
begin
{$ifndef NOOBJREG}
  RegisterType(RCompilerMessageListBox);
  RegisterType(RCompilerMessageWindow);
{$endif}
end;


end.
{
  $Log$
  Revision 1.18  2002-12-02 13:58:29  pierre
   * avoid longjmp messages if quitting after compilation error

  Revision 1.17  2002/11/20 17:35:00  pierre
   * use target_os.ExeExt for compiled executable

  Revision 1.16  2002/10/23 19:19:40  hajny
    * another bunch of missing HasSignal conditionals

  Revision 1.15  2002/09/26 15:00:35  pierre
   * fix problems with system unit is not present for __fp__ compilation

  Revision 1.14  2002/09/13 22:30:50  pierre
   * only fpc uses video unit

  Revision 1.13  2002/09/09 06:53:54  pierre
   * avoid to save file used by codecomplete

  Revision 1.12  2002/09/07 15:40:42  peter
    * old logs removed and tabs fixed

  Revision 1.11  2002/09/05 08:45:40  pierre
   * try to fix recompilation on changes problems

  Revision 1.10  2002/09/04 14:07:12  pierre
   + Enhance code complete by inserting unit symbols

  Revision 1.9  2002/08/26 13:03:14  pierre
   + add a lock to speed up parsing of userscreen

  Revision 1.8  2002/04/10 22:37:37  pierre
   * save and restore Exitproc if LongJmp called

  Revision 1.7  2002/03/20 14:48:27  pierre
   * moved StopJmp buffer to fpcatch unit

}