(*---------------------------------------------------------------------------
:Program.    MuchMore.mod
:Author.     Fridtjof Siebert
:Address.    Nobileweg 67, D-70439 Stuttgart, Germany
:Shortcut.   [fbs]
:Copyright.  Freeware
:Language.   Oberon-2
:Translator. Amiga Oberon Compiler v3.01
:History.   V1.0 summer-88: First very slow internal version             [fbs]
:History.   V1.1 24-Sep-88: First published version                      [fbs]
:History.   V1.2 26-Nov-88: Now displays Filelength & Percentage         [fbs]
:History.        27-Nov-88: Mouse can be used instead of Space/BackSpace [fbs]
:History.   V1.3 29-Apr-89: Strong increase in speed, removed WarpText   [fbs]
:History.        29-Apr-89: Now supports Numeric Keys (Home,PgUp etc.)   [fbs]
:History.        29-Apr-89: Now opens Screen as big as gfx.normalDisplay [fbs]
:History.   V1.4 29/30-Apr-89: Asynchronus loading/displaying. Very nice [fbs]
:History.        30-Apr-89, 00:33: Removed bugs in Filelength & L-Command[fbs]
:History.        30-Apr-89, 02:21: Added Find-Command                    [fbs]
:History.        30-Apr-89, 10:30: Scrolling stops when window inactive  [fbs]
:History.        01-May-89: Allocates no more unneeded memory for text   [fbs]
:History.        07-May-89: Allocates even less memory now               [fbs]
:History.        14-May-89: Removed deadlock-bug with Find-Window        [fbs]
:History.   V1.5 25-May-89: Added print feature                          [fbs]
:History.        25-May-89: Removed all imports (apart from Arts)        [fbs]
:History.        26-May-89: inspired by J. Kupfer, I added nk 5 to quit  [fbs]
:History.        26-May-89: Now handle BS correctly                      [fbs]
:History.   V1.6 02-Jul-89: Now supports several fontstyles and colors   [fbs]
:History.   V1.7 03-Jul-89: Is again as fast as it was with 2 colors     [fbs]
:History.        03-Jul-89: Now no more crashes when quitting while print[fbs]
:History.        07-Jul-89: removed bug with texts of length 0           [fbs]
:History.   V1.8 10-Jul-89: small bug in find-command removed            [fbs]
:History.        10-Jul-89: now found strings are highlighted            [fbs]
:History.        14-Jul-89: nk0 to display fileinfo                      [fbs]
:History.   V2.0 06-Aug-89: Ported this to OBERON                        [fbs]
:History.        06-Aug-89: Added ARP-FileRequester                      [fbs]
:History.        07-Aug-89: Added L - (load new file) Command            [fbs]
:History.   V2.1 03-Sep-89: no more gurus if an r/w error occures        [fbs]
:History.        03-Sep-89: MM used to execute CSI-Codes backwards. fixed[fbs]
:History.        03-Sep-89: ping / pong with Shift+Fn / Fn               [fbs]
:History.        03-Sep-89: new command: goto                            [fbs]
:History.   V2.2 05-Sep-89: will run with any keymapping now             [fbs]
:History.   V2.3 17-Sep-89: New command: sleep & Pop-Up feature          [fbs]
:History.        17-Sep-89: "MuchMore -s" will go to sleep immediately   [fbs]
:History.        17-Sep-89: Interprets <CSI>m as <CSI>0m now             [fbs]
:History.   V2.4 17-Sep-89: New command: write block "w"                 [fbs]
:History.        17-Sep-89: rewritten argument parser to allow quotes    [fbs]
:History.   V2.5 18-Sep-89: now uses the 8x8 font set with SetFont       [fbs]
:History.        19-Sep-89: no more scatters memory. Allocates 4K Chunks [fbs]
:History.   V2.6 26-Jun-90: Made MuchMore reentrant                      [fbs]
:History.        26-Jun-90: Opens 1-Plane Screen if memory is rare       [fbs]
:History.        26-Jun-90: Asynchronus fast scrolling with Ctrl-Up/Down [fbs]
:History.        26-Jun-90: Now supports interlaced screens              [fbs]
:History.        08-Aug-90: CLI-Option '-l' to toggle interlaced mode    [fbs]
:History.   V2.7 09-Aug-90: no more RethinkDisplay()s,looks good with 2.0[fbs]
:History.        10-Aug-90: Supports Kick2.0 ASL-FileRequester           [fbs]
:History.   V2.8 26-Dez-90: Leaves space between lines on interl. scrns  [fbs]
:History.   V3.0 04-Jul-91: Supports any non-proportional font now       [fbs]
:History.        04-Jul-91: no more supports '-s' (sleep),was rarely used[fbs]
:History.        04-Jul-91: new Options -f<font> and -s<size> for font   [fbs]
:History.        09-Nov-91: Find works w/ dmouse(window may get inactive)[fbs]
:History.   V3.1 04-Sep-92: Uses Screenmode of Workbench screen          [fbs]
:History.   V3.2 02-Nov-92: Supports non-scrollable screens              [fbs]
:History.        02-Nov-92: Complete redraw doesn't scroll anymore       [fbs]
:History. V3.2.1 24-Dec-92: XPK Support                             (C.Stiens)
:History.        24-Dec-92: New option -p for Password              (C.Stiens)
:History.        24-Dec-92: New option -e for Extra Spacing         (C.Stiens)
:History.        24-Dec-92: New option -c for Screen Colors         (C.Stiens)
:History.        24-Dec-92: Tooltypes                               (C.Stiens)
:History. V3.2.2 08-Jan-93: Doesn't use MyMakeScreen() no more      (C.Stiens)
:History. V3.2.3 08-Feb-93: Now closes Console Device               (C.Stiens)
:History.        08-Feb-93: Non-Scroll Mode didn't work always      (C.Stiens)
:History.        10-Feb-93: ScreenMode Requester                    (C.Stiens)
:History.        10-Feb-93: New Option -s for Scroll Mode           (C.Stiens)
:History.        10-Feb-93: Busy Pointer                            (C.Stiens)
:History.        14-Feb-93: Now evals Tooltypes also on CLI start   (C.Stiens)
:History. V3.2.4 15-Feb-93: Clears Idcmp while Busy                 (C.Stiens)
:History.        15-Feb-93: Bugs in GetString fixed                 (C.Stiens)
:History.        19-Feb-93: More Scrollmodes                        (C.Stiens)
:History.        20-Feb-93: Bug in Type() fixed                     (C.Stiens)
:History. V3.2.5 08-Mar-93: Asynch Scrolling changed                (C.Stiens)
:History.        08-Mar-93: New Option -t for Taskpri               (C.Stiens)
:History.        10-Mar-93: Now uses Dos.ReadArgs if KS 2.04        (C.Stiens)
:History. V3.2.6 19-Mar-93: scrollmode 3 now also scrolls soft      (C.Stiens)
:History.        19-Mar-93: New Option -o for one plane             (C.Stiens)
:History.        19-Mar-93: New Option -a for tab width             (C.Stiens)
:History.        19-Mar-93: Removed QText                           (C.Stiens)
:History.        21-Mar-93: Opens screen with full overscan width   (C.Stiens)
:History.        22-Mar-93: Filename can be on any pos at KS1.3     (C.Stiens)
:History.        27-Mar-93: New Option N=NOOSCAN                    (C.Stiens)
:History. V3.2.7 07-Apr-93: Dont pokes to bitmap no more            (C.Stiens)
:History. V3.2.8 12-Apr-93: New Option B=PLANES                     (C.Stiens)
:History. V3.2.9 12-May-93: Implemented V36 ANSI Codes              (C.Stiens)
:History. 3.2.10 16-May-93: Locale Support                          (C.Stiens)
:History.        16-May-93: DispMode-Requester font-sensitive       (C.Stiens)
:History.   V3.3 21-Jun-93: Code optimised                          (C.Stiens)
:History.        25-Jun-93: Safe quit                               (C.Stiens)
:History.   V3.4 29-Jun-93: Clipboard support                       (C.Stiens)
:History.        29-Jun-93: took version number out of catalog      (C.Stiens)
:History.   V3.5 31-Jul-93: case sensitive search, Boyer-Moore Alg. (C.Stiens)
:History.   V3.6 15-Aug-93: Page up/down with softscroll reimpl.    (C.Stiens)
:History.        16-Aug-93: Flash at EOF/BOF                        (C.Stiens)
:Contents.   A Soft-Scrolling ASCII-File Viewer.
:Remark.     Compile: 'Oberon -svbcrntzdma MuchMore' for short code
:Remark.     Compile: 'Oberon -dma MuchMore' for safe code
:Remark.     Link:    'OLink -dma MuchMore'
---------------------------------------------------------------------------*)

MODULE MuchMore; (* $StackChk- *)

IMPORT con:= Console,
       d  := Dos,
       e  := Exec,
       g  := Graphics,
       gt := GadTools,
       I  := Intuition,
       ip := IFFParse,
       ie := InputEvent,
       loc:= Locale,
       str:= Strings,
       u  := Utility,
       ol := OberonLib,
       SYS:= SYSTEM;

(*-------------------------------------------------------------------------*)

CONST

  MuchText = "MuchMore 3.6 © 1993 AMOK\o$VER: muchmore 3.6 (17.8.93)\ov3.6";

  usage = "Usage: MuchMore [-a#|-b#|-c#{,#}|-e#|-f<font>/#|-l|-o|-p<passwd>|-s#|-t#|file]";


  MSGOOM        = 0;
  MSGCOS        = 1;
  MSGCOW        = 2;
  MSGCOF        = 3;
  MSGRWERR      = 4;
  MSGRETRYABORT = 5;
  MSGEMPTY      = 6;
  MSGSAVE       = 7;
  MSGUSE        = 8;
  MSGCANCEL     = 9;
  MSGOK         = 10;
  MSGCHOOSESM   = 11;
  MSGINFOFMT    = 12;
  MSGH1         = 13;
  MSGH2         = 14;
  MSGH3         = 15;
  MSGH4         = 16;
  MSGH5         = 17;
  MSGH6         = 18;
  MSGH7         = 19;
  MSGH8         = 20;
  MSGH9         = 21;
  MSGH10        = 22;
  MSGH11        = 23;
  MSGH12        = 24;
  MSGH13        = 25;
  MSGH14        = 26;
  MSGH15        = 27;
  MSGH16        = 28;
  MSGH17        = 29;
  MSGH18        = 30;
  MSGH19        = 31;
  MSGH20        = 32;
  MSGH21        = 33;
  MSGH22        = 34;
  MSGH23        = 35;


  TYPE
    MSGTYPE = ARRAY 36 OF e.STRPTR;

  CONST

    MSGS = MSGTYPE(
      SYS.ADR( "Out of memory"      ),
      SYS.ADR( "Can't open screen"  ),
      SYS.ADR( "Can't open window"  ),
      SYS.ADR( "Can't open file"    ),
      SYS.ADR( "Read/Write Error"   ),
      SYS.ADR( "Retry|Abort"        ),
      SYS.ADR( "File empty"         ),
      SYS.ADR( "Save"               ),
      SYS.ADR( "Use"                ),
      SYS.ADR( "Cancel"             ),
      SYS.ADR( " OK "               ),
      SYS.ADR( "Choose Screen Mode:"),
      SYS.ADR( " File: %-30.30s %ld%% (%ld of %ld Bytes) %ld Lines"),
      SYS.ADR( "\x13                \x15  MuchMore %s Commands:  "),
      SYS.ADR( " \x0dSpace\x05,\x0d LMB\x05:         Start / Stop scrolling, Quit at end of file"),
      SYS.ADR( " \x0dBackSpace\x05,\x0d RMB\x05:     Start / Stop scrolling backwards"),
      SYS.ADR( " \x0dUp\x05/\x0dDown\x05:            Move one line \x0dup\x05 or \x0ddown\x05"),
      SYS.ADR( " \x0dShift \x05+\x0d Up\x05/\x0dDn\x05:      Start / Stop quick scrolling \x0dup\x05 or \x0ddown\x05"),
      SYS.ADR( " \x0dControl\x05:            Increase scroll speed"),
      SYS.ADR( " \x0dAlt\x05+\x0dUp\x05/\x0dDn\x05,\x0d PgUp\x05/\x0dDn\x05: Move one page \x0dup\x05 or \x0ddown\x05"),
      SYS.ADR( " \x0dT\x05,\x0d Home \x05/\x0d B\x05,\x0d End\x05:   Goto \x0dt\x05op / \x0db\x05ottom of text"),
      SYS.ADR( " (\x0DShift\x05) \x0DF\x05, \x0DN\x05, \x0DP\x05:    \x0DF\x05ind string (case sensitive), \x0DN\x05ext, \x0DP\x05revious"),
      SYS.ADR( " \x0dShift \x05+\x0d Fn\x05:         Set textmarker #n to current position"),
      SYS.ADR( " \x0dFn\x05:                 Goto marker #n or set marker #n if it wasn't set yet"),
      SYS.ADR( " \x0dG\x05:                  \x0dG\x05oto line"),
      SYS.ADR( " \x0dNK 0\x05:               Display info line"),
      SYS.ADR( " \x0dShift \x05+\x0d Alt \x05+\x0d O\x05:    Print text"),
      SYS.ADR( " \x0dW\x05:                  \x0dW\x05rite block between marker #1 and #2 to file or prt"),
      SYS.ADR( " \x0dL\x05:                  \x0dL\x05oad new text"),
      SYS.ADR( " \x0dHELP\x05,\x0d H\x05:            Show commands"),
      SYS.ADR( " \x0dESC\x05,\x0d Q\x05,\x0d X\x05,\x0d NK 5\x05:\x0d    Q\x05uit"),
      SYS.ADR( "© \x131992 Fridtjof Siebert, Nobileweg 67, D-70439 Stuttgart, Germany"),
      SYS.ADR( "  \x131993 Christian Stiens, Heustiege 2, D-59348 Lüdinghausen, Germany"),
      SYS.ADR( "  \x13Please refer to MuchMore.doc for a detailed copyright notice"),
      SYS.ADR( "  This is another product of the Amiga MODULA & OBERON Klub Stuttgart - \x0d\x13AMOK"),
      SYS.ADR( " \x0dC\x05:                  \x0dC\x05opy block between marker #1 and #2 to clipboard") );


CONST (* RawKey Codes: *)

  ESC   = 45H; HELP  = 5FH;
  UP    = 4CH; DOWN  = 4DH;
  SPACE = 40H; BS    = 41H;
  CR    = 44H; ENTER = 43H;
  NK0   = 0FH; NK1   = 1DH; NK2   = 1EH; NK3   = 1FH;
  NK5   = 2EH; NK7   = 3DH; NK8   = 3EH; NK9   = 3FH;
  F1    = 50H; F10   = 59H;


CONST
  ShowStackSize = 4096;
  BufferSize = 2048;

  w = TRUE;
  f = FALSE;

  MyIdcmp = LONGSET{I.inactiveWindow,I.activeWindow,I.rawKey,I.mouseButtons};

(* Control codes: *)
  plain    = 11X;
  italic   = 12X;
  bold     = 13X;
  boldit   = 14X;
  ulineon  = 15X;
  ulineoff = 16X;

  Italic = 0;
  Bold   = 1;
  Ulin   = 2;
  Inv    = 3;

TYPE
  String    = e.STRING;
  StringPtr = e.STRPTR;
  CharPtr   = UNTRACED POINTER TO CHAR;
  LongPtr   = UNTRACED POINTER TO LONGINT;

  TextLinePtr = UNTRACED POINTER TO TextLine;
  TextLine = STRUCT
               prev : TextLinePtr;
               next : TextLinePtr;
               len  : INTEGER;
               size : INTEGER;
               text : String;
             END;

CONST
  MaxLen = SIZE(String);

TYPE
  FileRequesterPtr = UNTRACED POINTER TO FileRequester;

  FileRequester = STRUCT
                    hail      : StringPtr;
                    ddef      : StringPtr;
                    ddir      : StringPtr;
                    wind      : I.WindowPtr;
                    funcFlags : SHORTSET;
                    flags2    : SHORTSET;
                    function  : PROCEDURE;
                    reserved2 : LONGINT;
                  END;

  WBStartupPtr = UNTRACED POINTER TO STRUCT (message : e.Message)
                   process    : d.ProcessId;
                   segment    : e.BPTR;
                   numArgs    : LONGINT;
                   toolWindow : StringPtr;
                   argList : UNTRACED POINTER TO ARRAY 256 OF STRUCT
                                 lock : d.FileLockPtr;
                                 name : StringPtr;
                             END;
                 END;

  DiskObjectPtr = UNTRACED POINTER TO STRUCT
                    magic      : INTEGER;
                    version    : INTEGER;
                    gadget     : I.Gadget;
                    type       : SHORTINT;
                    defaultTool: StringPtr;
                    toolTypes  : e.APTR;
                    currentX   : LONGINT;
                    currentY   : LONGINT;
                    drawerData : e.APTR;
                    toolWindow : StringPtr;
                    stackSize  : LONGINT;
                  END;

  Args = STRUCT
           a     : LongPtr;
           b     : LongPtr;
           c     : StringPtr;
           d     : StringPtr;
           e     : LongPtr;
           f     : StringPtr;
           n     : StringPtr;
           o     : StringPtr;
           p     : StringPtr;
           s     : LongPtr;
           t     : LongPtr;
           file  : StringPtr;
         END;

(*------  Memory:  ------*)

CONST ChunkSize = 16384;          (* size of allocated chunks *)

TYPE
  MemChunkPtr = UNTRACED POINTER TO MemChunk;  (* chunklist *)

  MemChunk = STRUCT
               prev: MemChunkPtr;     (* link *)
               data: ARRAY ChunkSize OF CHAR; (* ChunkSize Bytes of memory *)
             END;


(*------  Globals  ------*)

VAR
  pub            : I.ScreenPtr;        (* default public screen             *)
  Screen         : I.ScreenPtr;        (* MuchMore's Screen                 *)
  rp             : g.RastPortPtr;      (* Screen's RastPort                 *)
  BM             : g.BitMapPtr;        (* Screen's BitMap                   *)
  id             : LONGINT;            (* Display ID                        *)
  Window         : I.WindowPtr;        (* My window                         *)
  win            : I.WindowPtr;        (* window for Find & Goto            *)
  catalog        : loc.CatalogPtr;     (* The Catalog                       *)
  MyFile         : d.FileHandlePtr;    (* For loading Textfile              *)
  MyAttr         : g.TextAttr;         (* The selected Font attributes      *)
  MyFont         : g.TextFontPtr;      (* The selected Font                 *)
  FontName       : String;             (* My Font Name or                   *)
  FontSize       : INTEGER;            (* My Font Size                      *)
  FirstLine      : TextLinePtr;        (* the topmost Line                  *)
  TopLine        : TextLinePtr;        (* the topmost Line                  *)
  BottomLine     : TextLinePtr;        (* Last Line displayed on Screen     *)
  LoadLine       : TextLinePtr;        (* currently loaded Line             *)
  LastLine       : TextLinePtr;        (* Last element of LineList          *)
  writeText      : TextLine;           (* temp. Text Line                   *)
  Name,OldName   : String;             (* Text's Name                       *)
  option         : String;             (* CLI Option                        *)
  taskpri,oldpri : SHORTINT;           (* Muchmore's Task Priority          *)
  Pens           : String;             (* Screen colors                     *)
  Cols           : ARRAY 4 OF INTEGER; (* Color array for LoadRGB4          *)
  icon           : DiskObjectPtr;      (* info                              *)
  nameptr        : StringPtr;          (* String Pointer                    *)
  chptr          : CharPtr;            (* Char Pointer                      *)
  PStr           : String;             (* The command for Dos.Execute       *)
  Buffer         : UNTRACED POINTER TO ARRAY BufferSize OF CHAR; (* ReadBuf *)
  RQPos          : LONGINT;            (* Position within ReadBuffer        *)
  RQLen          : LONGINT;            (* Number of CHARs in Buffer         *)
  scrollmode     : INTEGER;            (* 0=MakeScreen/MrgCop 1=ScrollVPort *)
  NumLines       : INTEGER;            (* Number of Lines on Screen         *)
  fontWidth,fontHeight: INTEGER;       (* Font size                         *)
  fontBaseLine   : INTEGER;            (* Font base line                    *)
  spacing        : INTEGER;            (* Extra Line Spacing                *)
  NumColumns     : INTEGER;            (* Number of Columns on Screen       *)
  PageHeight     : INTEGER;            (* fontHeight*NumLines               *)
  i,j            : INTEGER;            (* count                             *)
  AnzLines       : LONGINT;            (* Length of Text in Lines           *)
  MyLock,OldDir  : d.FileLockPtr;      (* To Examine and Load File          *)
  oldcd          : d.FileLockPtr;      (* To save old CD                    *)
  FileInfo       : d.FileInfoBlockPtr; (* to get File's length              *)
  FileLength,TextLength: LONGINT;      (* Length of File and Displayed Text *)
  ScreenPos      : INTEGER;            (* actual position within bitmap     *)
  numColors      : INTEGER;            (* Number of Colors                  *)
  ShowTask       : e.TaskPtr;          (* the task that displays the text   *)
  ShowStack      : e.APTR;             (* it's stack                        *)
  ShowTaskRunning: BOOLEAN;            (* is Showtask activated?            *)
  SignalNewData  : BOOLEAN;            (* Signal when new data is loaded    *)
  SignalAllRead  : BOOLEAN;            (* send signal at end of text        *)
  Done           : BOOLEAN;            (* Quit                              *)
  print          : BOOLEAN;            (* print text                        *)
  save           : BOOLEAN;            (* save block?                       *)
  copy           : BOOLEAN;            (* copy block to clipboard?          *)
  NewText        : BOOLEAN;            (* load new text                     *)
  Info           : BOOLEAN;            (* is info currently displayed ?     *)
  modeReq        : BOOLEAN;            (* Show Display Mode Requester?      *)
  Scroll         : BOOLEAN;            (* scrolling or waiting?             *)
  Fast           : BOOLEAN;            (* scroll quick?                     *)
  Sync           : BOOLEAN;            (* scroll very quick?                *)
  lace,oldLace   : BOOLEAN;            (* use interlaced screen?            *)
  Decrunched     : BOOLEAN;            (* Is file decrunched?               *)
  Scrollable     : BOOLEAN;            (* is screen able to scroll?         *)
  noOscan        : BOOLEAN;            (* Open Text-overscan Screen?        *)
  refresh        : BOOLEAN;            (* Refresh Window?                   *)
  oldstyle       : BOOLEAN;            (* Page Up/Down with soft scroll?    *)
  overscanTag    : LONGINT;            (* overscan tag                      *)
  mySigBit       : INTEGER;            (* My SignalBit                      *)
  mySig          : LONGSET;            (* My SignalSet = LONGSET{mySigBit}  *)
  Me             : d.ProcessPtr;       (* my main task                      *)
  MyMsgPtr       : I.IntuiMessagePtr;  (* for receiving Messages            *)
  frame          : INTEGER;            (* Frame Count                       *)
  in,out         : d.FileHandlePtr;    (* i/o for TYPE xxx TO PRT:          *)
  fg,bg          : INTEGER;            (* Text colors                       *)
  oldfg,oldbg    : INTEGER;            (* Old Text colors                   *)
  style          : SHORTSET;           (* Text style                        *)
  CommLine       : UNTRACED POINTER TO ARRAY 1000 OF CHAR;(* the CLI args   *)
  tabw           : INTEGER;            (* Tabulator width                   *)
  rd             : d.RDArgsPtr;        (* For ReadArgs                      *)
  args           : Args;               (* My CLI Args                       *)
  ArgPtr         : StringPtr;          (* to get WBArg                      *)
  wbm            : WBStartupPtr;       (* WBenchMessage                     *)
  ri             : g.RasInfoPtr;       (* Screen's ViewPort's RasInfo       *)
  NuScreen       : I.NewScreen;        (* to open screen                    *)
  dims           : g.DimensionInfo;    (* Dims for KS2.0                    *)
  disp           : g.DisplayInfo;      (* DisplayInfo for KS2.0             *)
  NuWindow       : I.NewWindow;        (* to open window                    *)
  Prefs          : I.Preferences;      (* Preferences (need wbLace)         *)
  StrGadget      : I.Gadget;           (* Gadget for Find-Command           *)
  StrInfo        : I.StringInfo;       (* its special info                  *)
  arp            : e.LibraryPtr;       (* ArpBase                           *)
  asl            : e.LibraryPtr;       (* ASL-librarybase                   *)
  diskFontBase   : e.LibraryPtr;       (* DiskFont-LibraryBase              *)
  xpk            : e.LibraryPtr;       (* XpkMaster-Librarybase             *)
  iconBase       : e.LibraryPtr;       (* Icon-Librarybase                  *)
  body,text,ok   : I.IntuiText;        (* IntuiTexts for AutoRequest        *)
  FR             : FileRequester;      (* The Requester                     *)
  Filename       : String;             (* The Filename (without path)       *)
  Dirname        : String;             (* its path                          *)
  Pattern        : ARRAY 80 OF CHAR;   (* The pattern for Filerequester     *)
  NewDisp        : BOOLEAN;            (* need to rebuild Display ?         *)
  TextMarkers    : ARRAY 10 OF TextLinePtr; (* Marked Positions in text     *)
  FindLine       : TextLinePtr;        (* Last found line                   *)
  KeyMap         : ARRAY 50H OF CHAR;  (* console's KeyMap                  *)
  Password       : String;             (* Password for encrypted texts      *)
  conreq         : e.IOStdReqPtr;      (* Console IO-Request                *)
  console        : e.DevicePtr;        (* the console.device                *)
  ievent         : ie.InputEventPtr;   (* InputEvent to convert keycodes    *)
  WriteName      : String;             (* File to write Block               *)
  savefrom,savesize: LONGINT;          (* How much to save?                 *)
  iff            : ip.IFFHandlePtr;    (* IFF Handle for clipboard copy     *)
  buffer         : UNTRACED POINTER TO CHAR; (* Save buffer                 *)
  MemIndex       : INTEGER;            (* index in current Chunk            *)
  CurChunk       : MemChunkPtr;        (* current chunk                     *)
  c              : CHAR;               (* \ used by GetTextLine();          *)
  le             : INTEGER;            (* / global for speed                *)


(*-------------------------------------------------------------------------*)

(*------  DiskFont Procedure:  ------*)

PROCEDURE OpenDiskFont*{diskFontBase,-30}(VAR textAttr{8}: g.TextAttr): g.TextFontPtr;


(*-------------------------------------------------------------------------*)

(*------  Icon Procedures:  ------*)

PROCEDURE GetDiskObject {iconBase,- 78}(name{8}        : ARRAY OF CHAR): DiskObjectPtr;
PROCEDURE FreeDiskObject{iconBase,- 90}(diskobj{8}     : DiskObjectPtr);
PROCEDURE FindToolType  {iconBase,- 96}(toolTypes{8}   : e.APTR;
                                        typeName{9}    : ARRAY OF CHAR): StringPtr;
PROCEDURE MatchToolValue{iconBase,-102}(typeString{8}  : ARRAY OF CHAR;
                                        val{9}         : ARRAY OF CHAR): BOOLEAN;


(*-------------------------------------------------------------------------*)


PROCEDURE StuffChar; (* $EntryExitCode- *)
BEGIN
  SYS.INLINE(016C0U, 04E75U)
END StuffChar;


(*-------------------------------------------------------------------------*)


PROCEDURE LocStr (num: LONGINT): e.STRPTR;
VAR default: e.STRPTR;

BEGIN
  default := MSGS[num];
  IF loc.base=NIL THEN RETURN default
                  ELSE RETURN loc.GetCatalogStr(catalog,num,default^) END;
END LocStr;


(*-----------------------------  Requester:  ------------------------------*)


PROCEDURE Request(Text: ARRAY OF CHAR); (* $CopyArrays- *)

BEGIN
  IF ol.wbStarted THEN
    body.frontPen := 0; body.backPen  := 1;  body.drawMode := g.jam2;
    body.leftEdge := 12; body.topEdge  := 8;
    text := body; ok := body;
    body.iText    := SYS.ADR(MuchText);
    body.nextText := SYS.ADR(text);
    text.iText    := SYS.ADR(Text); text.topEdge := 22;
    ok.leftEdge   := 6; ok.topEdge := 3; ok.iText := LocStr(MSGOK);
    SYS.SETREG(0,I.AutoRequest(NIL,SYS.ADR(body),NIL,SYS.ADR(ok),LONGSET{I.rawKey},LONGSET{},320,65));
  ELSE
    SYS.SETREG(0,d.Write(d.Output(),Text,str.Length(Text)));
    SYS.SETREG(0,d.Write(d.Output(),"\n",1));
  END;
  HALT(d.fail);
END Request;


PROCEDURE OutOfMemHandler;
VAR es: I.EasyStruct;

BEGIN
  IF I.int.libNode.version >= 37 THEN
    es.structSize   := SIZE(I.EasyStruct);
    es.flags        := LONGSET{};
    es.title        := SYS.ADR(MuchText);
    es.textFormat   := LocStr(MSGOOM);
    es.gadgetFormat := LocStr(MSGRETRYABORT);
    IF I.EasyRequest(NIL,SYS.ADR(es),NIL,NIL)=0 THEN
      HALT(d.fail)
    END;
  ELSE
    Request(LocStr(MSGOOM)^);
  END;
END OutOfMemHandler;


(*-------------------------------------------------------------------------*)


PROCEDURE AllocLine(sz: INTEGER): TextLinePtr;

VAR newchunk: MemChunkPtr;

BEGIN
  INC(sz,SIZE(TextLine)-MaxLen); IF ODD(sz) THEN INC(sz) END;
  IF MemIndex+sz<=ChunkSize THEN     (* does mem fit into current chunk ? *)
    INC(MemIndex,sz);                (* increment index in current chunk  *)
  ELSE
    NEW(newchunk);                   (* allocate new chunk                *)
    newchunk.prev := CurChunk;       (* link chunk into list              *)
    CurChunk := newchunk;
    MemIndex := sz;
  END;
  RETURN SYS.ADR(CurChunk.data[MemIndex-sz]);
END AllocLine;


PROCEDURE DisposeLines();

VAR chunk: MemChunkPtr;

BEGIN
  WHILE CurChunk#NIL DO
    chunk := CurChunk.prev;
    DISPOSE(CurChunk);
    CurChunk := chunk;
  END;
  MemIndex := ChunkSize;
END DisposeLines;


(*-------------------------------------------------------------------------*)

(* $Debug- *)


PROCEDURE Busy;

(* $DataChip+ *)

TYPE Data = ARRAY 36 OF INTEGER;

CONST ClockData = Data(
  00000U,00000U,
  00400U,007C0U, 00000U,007C0U, 00100U,00380U, 00000U,007E0U,
  007C0U,01FF8U, 01FF0U,03FECU, 03FF8U,07FDEU, 03FF8U,07FBEU,
  07FFCU,0FF7FU, 07EFCU,0FFFFU, 07FFCU,0FFFFU, 03FF8U,07FFEU,
  03FF8U,07FFEU, 01FF0U,03FFCU, 007C0U,01FF8U, 00000U,007E0U,
  00000U,00000U);

BEGIN
  IF Window#NIL THEN
    I.OldModifyIDCMP(Window,MyIdcmp-LONGSET{I.rawKey,I.mouseButtons});
    I.SetPointer(Window,ClockData,16,16,-6,0);
  END;
END Busy;


PROCEDURE UnBusy;
BEGIN
  IF Window#NIL THEN
    I.ClearPointer(Window);
    I.OldModifyIDCMP(Window,MyIdcmp);
  END;
END UnBusy;


(*------  Scroll:  ------*)

PROCEDURE MakeThink(sync,fast,always: BOOLEAN);
VAR m: INTEGER;

BEGIN
  IF Scrollable THEN
    m := 1;
    IF ~always THEN
      IF lace & ~fast THEN m := 2 END;
      IF ~sync THEN INC(m,m*2) END;
    END;
    IF (m=1) OR (frame MOD m=0) THEN
      CASE scrollmode OF
      | 0: I.MakeScreen(Screen);
           e.Forbid; g.MrgCop(I.ViewAddress()); e.Permit;
           g.WaitTOF;
      | 1: g.ScrollVPort(SYS.ADR(Screen.viewPort));
           g.WaitTOF;
      ELSE
           I.MakeScreen(Screen);
           I.RethinkDisplay();
      END;
    END;
    INC(frame);
    (* $IF OvflChk *)
    frame := frame MOD 16384;
    (* $END *)
  END;
END MakeThink;


(*------  Clear Display:  ------*)

PROCEDURE ClearBitMaps;
BEGIN
  g.SetRast(rp,0);
  IF Scrollable THEN
    ri.ryOffset := 0;
    ScreenPos := 0;
    MakeThink(f,f,w);
  END;
END ClearBitMaps;

(*-------------------------------------------------------------------------*)

(*------  Read one TextLine into a Variable:  ------*)


PROCEDURE GetTextLine(): TextLinePtr;
(* returns NIL at EOF *)

VAR
  l        : TextLinePtr;
  sz,wd,i,j: INTEGER;
  txt      : ARRAY MaxLen+1 OF CHAR;
  num      : ARRAY 10 OF INTEGER;
  newcol   : BOOLEAN;
  oldstyle : SHORTSET;

  PROCEDURE GetCh();
  BEGIN
    IF RQPos=RQLen THEN
      RQLen := d.Read(MyFile,Buffer^,BufferSize);
      IF RQLen<0 THEN Request(LocStr(MSGRWERR)^) END;
      RQPos := 0;
    END;
    IF RQLen=0 THEN c := 0X ELSE
      c := Buffer[RQPos]; IF c=0X THEN c:=1X END;
      INC(RQPos); INC(le);
    END;
  END GetCh;

BEGIN
  IF RQLen=0 THEN RETURN NIL END;
  sz := 0; wd := 0; le := 0;
  IF Italic IN style THEN IF Bold IN style THEN txt[sz] := boldit ELSE txt[sz] := italic END; INC(sz)
                     ELSE IF Bold IN style THEN txt[sz] := bold; INC(sz) END                      END;
  IF   Ulin IN style     THEN txt[sz] := ulineon; INC(sz) END;
  IF    Inv IN style     THEN txt[sz] := CHR(fg+4*bg+1); INC(sz)
  ELSIF (fg#1) OR (bg#0) THEN txt[sz] := CHR(bg+4*fg+1); INC(sz) END;
  LOOP
    LOOP
      GetCh;
      IF SYS.VAL(CHAR,SYS.VAL(SHORTSET,c)*SHORTSET{0..6})#1BX THEN EXIT END;
      i := -1;
      REPEAT
        GetCh;
        IF (c>=30X) & (c<=39X) THEN
          INC(i); num[i] := 0;
          REPEAT
            num[i] := 10*num[i]+ORD(c)-ORD(30X); GetCh;
          UNTIL (c<30X) OR (c>39X);
        END;
        c := CAP(c);
      UNTIL (c>=3FX(*"?"*)) & (c<=5AX) OR (c=0X) OR (i=9);
      IF c=4DX THEN
        newcol := f; oldstyle := style; j := 0;
        IF i=-1 THEN i:=0; num[0] := 0 END;
        WHILE (i>=j) & (sz<MaxLen-1) DO
          CASE num[j] OF
          0:  style := SHORTSET{}; fg := 1; bg := 0; newcol := w |
          1:  INCL(style,Bold) |
          2:  fg := 2; newcol := w |
          3:  INCL(style,Italic) |
          4:  INCL(style,Ulin) |
          7:  INCL(style,Inv); newcol := w |
          8:  oldfg:=fg; oldbg:=bg; fg:=0; bg:=0; newcol := w |

          22: EXCL(style,Bold); fg := 1; newcol := w |
          23: EXCL(style,Italic) |
          24: EXCL(style,Ulin) |
          27: EXCL(style,Inv); newcol := w |
          28: fg:=oldfg; bg:=oldbg; newcol := w |

          30..37: fg := (num[j]-30) MOD numColors; (*IF fg>=numColors THEN fg:=numColors-1 END;*) newcol := w |
          39:     fg := 1; newcol := w |

          40..47: bg := (num[j]-40) MOD numColors; (*IF bg>=numColors THEN bg:=numColors-1 END;*) newcol := w |
          49:     bg := 0; newcol := w |

          ELSE END;
          INC(j);
        END;
        IF (oldstyle#style) & (sz<MaxLen) THEN
          IF Italic IN style THEN IF Bold IN style THEN txt[sz] := boldit ELSE txt[sz] := italic END;
                             ELSE IF Bold IN style THEN txt[sz] := bold   ELSE txt[sz] := plain  END;
          END;
          INC(sz);
          IF (Ulin IN style) THEN
            IF ~((Ulin IN oldstyle)) & (sz<MaxLen) THEN
              txt[sz] := ulineon;
              INC(sz);
            END;
          ELSE
            IF (Ulin IN oldstyle) & (sz<MaxLen) THEN
              txt[sz] := ulineoff;
              INC(sz);
            END;
          END;
        END;
        IF newcol & (sz<MaxLen) THEN
          IF Inv IN style THEN txt[sz] := CHR(fg+4*bg+1)
                          ELSE txt[sz] := CHR(bg+4*fg+1) END;
          INC(sz);
        END;
      END;   (* IF c="m" THEN *)
    END;   (* LOOP *)
    CASE c OF
      020X.. 7FX:   txt[sz] := c; INC(sz); INC(wd) |
      0A1X..0FFX:   txt[sz] := c; INC(sz); INC(wd) |
      8X: (* BS *)  IF wd>0 THEN DEC(sz); DEC(wd); END |
      9X: (* TAB *) REPEAT
                      txt[sz] := 20X; INC(sz); INC(wd)
                    UNTIL (sz=MaxLen) OR (wd=NumColumns) OR (sz MOD tabw=0) |
      0A0X:         txt[sz] := 20X; INC(sz); INC(wd) |
      0AX,0X,0CX:   EXIT
    ELSE
    END;
    IF (wd>=NumColumns) OR (sz>=MaxLen) THEN EXIT END;
  END;
  txt[sz] := 0X; INC(sz);
  l := AllocLine(sz);
  l.len := le; l.size:= sz;
  WHILE sz>0 DO DEC(sz); l.text[sz] := txt[sz] END;
  RETURN l;
END GetTextLine;


(*------  Write Line to Screen:  ------*)


PROCEDURE Type(pos: INTEGER; line: TextLinePtr);

VAR
  style: SHORTSET;
  front,back: SHORTINT;
  c: CHAR;
  last,i,x,y: INTEGER;
  strPtr: StringPtr;

BEGIN
  g.SetDrMd(rp,g.jam2);
  IF Scrollable THEN
    g.SetAPen(rp,0);
    y := pos * fontHeight;
    IF ~refresh THEN g.RectFill(rp,0,y,NuScreen.width-1,y+fontHeight-spacing-1) END;
  END;
  i := 0; x := 0; style := SHORTSET{}; front := 1; back := 0;
  LOOP
    WHILE line.text[i] < " " DO
      c := line.text[i];
      IF c=0X THEN EXIT END;
      CASE c OF
      plain   : style := style - SHORTSET{g.bold,g.italic} |
      italic  : EXCL(style,g.bold); INCL(style,g.italic)   |
      bold    : INCL(style,g.bold); EXCL(style,g.italic)   |
      boldit  : style := style + SHORTSET{g.bold,g.italic} |
      ulineon : INCL(style,g.underlined) |
      ulineoff: EXCL(style,g.underlined) |
      1X..10X : DEC(c);
                front := SHORT(ORD(c)) DIV 4;
                back  := SHORT(ORD(c)) MOD 4 |
      ELSE END;
      INC(i);
    END;
    strPtr := SYS.ADR(line.text[i]); last := i;
    REPEAT INC(i) UNTIL line.text[i]<" ";
    SYS.SETREG(0,g.SetSoftStyle(rp,style,-SHORTSET{}));
    g.SetAPen(rp,front);
    g.SetBPen(rp,back);
    g.Move(rp,fontWidth*x,fontHeight*pos+fontBaseLine);
    g.Text(rp,strPtr^,i-last);
    INC(x,i-last);
  END;
END Type;


PROCEDURE CopyScrollLine(pos: INTEGER);
(* Kopiert die an pos geschriebene Zeile auf den entsprechenden
 * DoubleBuffer-Bereich
 * ACHTUNG: Darf nur aufgerufen werden, wenn Scrollable TRUE ist!
 *)

VAR
  y,z: INTEGER;

BEGIN
  y := pos*fontHeight;
  z := PageHeight;
  IF pos >= NumLines THEN z := -z END;
  SYS.SETREG(0,g.BltBitMap(BM, 0,y, BM, 0,y+z, NuScreen.width,fontHeight, 0C0X, SHORTSET{0..7}, NIL));
END CopyScrollLine;


(*------  Copy String to TextLine:  ------*)


PROCEDURE CopyToWriteText(String: StringPtr);
VAR i,j : INTEGER;

BEGIN
  e.CopyMem(String^,writeText.text,MaxLen-1);
  j := 0;
  FOR i := 0 TO SHORT(str.Length(writeText.text))-1 DO
    IF writeText.text[i] >= " " THEN INC(j) END;
    IF j >= NumColumns THEN
      writeText.text[i] := 0X;
      RETURN
    END;
  END;
END CopyToWriteText;


(*------  Write String to Screen (at any position):  ------*)


PROCEDURE TypeTo(VAR text: TextLine; pos: INTEGER);

BEGIN
  IF pos < NumLines THEN
    IF ~Scrollable THEN
      Type(pos,SYS.ADR(text));
    ELSE
      INC(pos,ScreenPos);
      Type(pos,SYS.ADR(text));
      CopyScrollLine(pos);
    END;
  END;
END TypeTo;


(*------  Write String to Screen (at any position):  ------*)


PROCEDURE WriteTo(String: StringPtr; pos: INTEGER);

BEGIN
  CopyToWriteText(String);
  TypeTo(writeText,pos);
END WriteTo;


(*------  Write Line at Bottom of Text:  ------*)


PROCEDURE AddBottomLine(Line: TextLinePtr; Fast: BOOLEAN);
VAR i,y: INTEGER;

BEGIN
  IF ~Scrollable THEN
    g.SetAPen(rp,0); g.SetBPen(rp,0);
    IF Fast THEN
      g.ScrollRaster(rp,0,fontHeight,0,0,NuScreen.width-1,NuScreen.height-1);
      IF Sync THEN g.WaitTOF END;
    ELSE
      i := fontHeight;
      REPEAT
        g.ScrollRaster(rp,0,1,0,0,NuScreen.width-1,NuScreen.height-1);
        IF Sync THEN g.WaitTOF END;
        DEC(i);
      UNTIL i=0;
    END;
    Type(NumLines-1,Line);
  ELSE
    Type(ScreenPos+NumLines,Line);
    y := ScreenPos*fontHeight;
    IF Fast THEN
      INC(ri.ryOffset,fontHeight);
      MakeThink(Sync,w,f);
      SYS.SETREG(0,g.BltBitMap(BM, 0,y+PageHeight, BM, 0,y, NuScreen.width,fontHeight, 0C0X, SHORTSET{0..7}, NIL));
    ELSE
      i := fontHeight;
      REPEAT
        INC(ri.ryOffset);
        MakeThink(Sync,f,f);
        SYS.SETREG(0,g.BltBitMap(BM, 0,y+PageHeight, BM, 0,y, NuScreen.width,1, 0C0X, SHORTSET{0..7}, NIL));
        INC(y);
        DEC(i);
      UNTIL i=0;
    END;
    INC(ScreenPos);
    IF ScreenPos=NumLines THEN
      ScreenPos := 0;
      ri.ryOffset := 0;
    END;
  END;
END AddBottomLine;


(*------  Check whether BottomLine.next is NIL or not:  ------*)


PROCEDURE TryBottomnext(): BOOLEAN;
(* returns TRUE if BottomLine.next#NIL END; *)

BEGIN
  IF (BottomLine.next=NIL) & (MyFile#NIL) THEN
    SignalNewData := w;
    SYS.SETREG(0,e.Wait(mySig));
    SignalNewData := f;
  END;
  RETURN BottomLine.next#NIL;
END TryBottomnext;


(*------  Scroll down one Line:  ------*)


PROCEDURE ScrollDown(Fast: BOOLEAN);

BEGIN
  IF TryBottomnext() THEN
    BottomLine := BottomLine.next;
    INC(AnzLines);
    INC(TextLength,BottomLine.len);
  ELSE RETURN END;
  IF AnzLines >= NumLines THEN TopLine := TopLine.next END;
  AddBottomLine(BottomLine,Fast);
END ScrollDown;


(*------  Scroll Up one Line:  ------*)


PROCEDURE ScrUp (Fast: BOOLEAN);
VAR
  i,y: INTEGER;

BEGIN
  IF ~Scrollable THEN
    g.SetAPen(rp,0); g.SetBPen(rp,0);
    IF Fast THEN
      g.ScrollRaster(rp,0,-fontHeight,0,0,NuScreen.width-1,NuScreen.height-1);
      IF Sync THEN g.WaitTOF END;
    ELSE
      i := fontHeight;
      REPEAT
        g.ScrollRaster(rp,0,-1,0,0,NuScreen.width-1,NuScreen.height-1);
        IF Sync THEN g.WaitTOF END;
        DEC(i)
      UNTIL i=0;
    END;
    IF TopLine.prev#NIL THEN Type(0,TopLine.prev) ELSE Type(0,FirstLine) END;
  ELSE
    IF ScreenPos=0 THEN
      ri.ryOffset  := NumLines*fontHeight;
      ScreenPos := NumLines;
    END;
    DEC(ScreenPos);
    IF TopLine.prev#NIL THEN Type(ScreenPos,TopLine.prev) ELSE Type(ScreenPos,FirstLine) END;
    y := ScreenPos*fontHeight;
    IF Fast THEN
      DEC(ri.ryOffset,fontHeight);
      MakeThink(Sync,w,f);
      SYS.SETREG(0,g.BltBitMap(BM, 0,y, BM, 0,y+PageHeight, NuScreen.width,fontHeight , 0C0X, SHORTSET{0..7}, NIL));
    ELSE
      INC(y,fontHeight);
      i := fontHeight;
      REPEAT
        DEC(ri.ryOffset);
        MakeThink(Sync,f,f);
        DEC(y);
        SYS.SETREG(0,g.BltBitMap(BM, 0,y, BM, 0,y+PageHeight, NuScreen.width,1, 0C0X, SHORTSET{0..7}, NIL));
        DEC(i);
      UNTIL i=0;
    END;
  END;
END ScrUp;


PROCEDURE ScrollUp(Fast: BOOLEAN);

BEGIN
  IF (TopLine.prev#NIL) & (TopLine.prev.prev#NIL) THEN
    TopLine := TopLine.prev;
    DEC(TextLength,BottomLine.len);
    DEC(AnzLines);
    BottomLine := BottomLine.prev;
    ScrUp(Fast);
  END;
END ScrollUp;


(*------  Undo last AddBottomLine:  ------*)


PROCEDURE DelLine(Fast: BOOLEAN);

BEGIN
  ScrUp(Fast);
  Info := f;
END DelLine;


(*------  Convert String to Integer:  ------*)

PROCEDURE StrToInt(str: StringPtr; base: INTEGER): LONGINT;

VAR
  i,j: INTEGER;
  num: LONGINT;
  ch : CHAR;
  neg: BOOLEAN;

BEGIN
  num := 0; i := 0; neg := f;
  IF  str^[0] = '-'                   THEN str:=SYS.ADR(str[1]); neg := w END;
  IF  str^[0] = '$'                   THEN str:=SYS.ADR(str[1]); base:=16 END;
  IF (str^[0]='0')&(CAP(str^[1])='X') THEN str:=SYS.ADR(str[2]); base:=16 END;
  LOOP
    IF i=LEN(str^) THEN EXIT END;
    ch := CAP(str^[i]);
    IF ch=0X THEN EXIT END;
    j := ORD(ch);
    CASE ch OF
      "0".."9": DEC(j,ORD('0'))   |
      "A".."F": DEC(j,ORD('A')-10);
                IF base=10 THEN base:=16; i:=-1; j:=0; num:=0 END;
      ELSE EXIT
    END;
    num := num * base + j;
    INC(i);
  END;
  IF neg THEN num := -num END;
  RETURN num
END StrToInt;


(*-------------------------------------------------------------------------*)


PROCEDURE GetStr(name: StringPtr; VAR str: String);
VAR i: INTEGER;

BEGIN
  i := -1;
  REPEAT
    INC(i); str[i] := name^[i]
  UNTIL (name^[i]=0X) OR (i=LEN(str)-1);
  str[i] := 0X
END GetStr;


(*-------------------------------------------------------------------------*)


PROCEDURE GetLength(t: TextLinePtr);

BEGIN
  TextLength := 0; AnzLines := 0;
  WHILE t#NIL DO INC(AnzLines); INC(TextLength,t.len); t := t.prev END;
END GetLength;


(*-------------------------------------------------------------------------*)


PROCEDURE NewDisplay;
(* Zeichnet ab BottomLine neu *)

VAR
  i: INTEGER;
  l: TextLinePtr;

BEGIN
  IF ~refresh THEN ClearBitMaps END;
  l := BottomLine.prev;
  IF l#NIL THEN BottomLine := l END;
  l := BottomLine;
  i := NumLines-1;
  WHILE (i>0) & TryBottomnext() DO
    BottomLine := BottomLine.next;
    DEC(i);
  END;
  WHILE (i>0) & (l.prev#NIL) DO
    l := l.prev;
    DEC(i);
  END;
  TopLine := l.next;
  WHILE i<NumLines DO
    BottomLine := l;
    TypeTo(BottomLine^,i);
    INC(i);
    l := l.next;
  END;
  GetLength(BottomLine);
  Scroll := f;
END NewDisplay;


(*-------------------------------------------------------------------------*)


PROCEDURE * ShowProc;

VAR
  l           : TextLinePtr;
  Down        : BOOLEAN;          (* Scroll-Direction                  *)
  Shift       : BOOLEAN;          (* Shifted Keystroke ?               *)
  Alt         : BOOLEAN;          (* Altered Keystroke ?               *)
  wasInfo     : BOOLEAN;          (* was Info line displayed ?         *)
  found       : BOOLEAN;          (* TRUE, if find was successful      *)
  chr         : CHAR;             (* converted keycode                 *)
  caseDelta   : SHORTINT;         (* Case sensitive Search?            *)
  flen        : INTEGER;          (* length of findstring              *)
  i,j         : INTEGER;          (* Count                             *)
  Class       : LONGSET;          (* contains Message.class            *)
  Code        : INTEGER;          (* contains Message.code             *)
  Qualifier   : SET;              (* contains Message.qualifier        *)
  Find,FindStr: ARRAY 80 OF CHAR; (* findstring / capital findstring   *)
  Goto        : ARRAY 10 OF CHAR; (* string containing goto line #     *)
  li          : LONGINT;          (* longint value of line to go to    *)
  HiText      : TextLine;         (* Highlited textline                *)
  OldHiText   : TextLinePtr;      (* original, un-hilited text         *)
  skipTab     : ARRAY 256 OF INTEGER;(* for Boyer-Moore Alg.           *)


  PROCEDURE WaitAllRead();

  BEGIN
    IF MyFile#NIL THEN
      Busy;
      SignalAllRead := w;
      SYS.SETREG(0,e.Wait(mySig));
      SignalAllRead := f;
      UnBusy;
    END;
  END WaitAllRead;


  PROCEDURE HiLite(at,len: INTEGER);
  (* Hilites len chars of BottomLine.text starting at position at *)

  VAR
    c: INTEGER;
    col: CHAR;

  BEGIN
    OldHiText := BottomLine; HiText := OldHiText^; BottomLine := SYS.ADR(HiText);
    IF at+len+2<MaxLen THEN
      c := 0; col := 5X;
      WHILE c<at DO
        IF HiText.text[c]<CHR(17) THEN col := HiText.text[c] END;
        INC(c);
      END;
      HiText.text[at] := CHR(17-ORD(col));
      c := at; INC(len,at);
      WHILE c<len DO
        HiText.text[c+1] := OldHiText.text[c];
        INC(c);
      END;
      HiText.text[c+1] := col;
      REPEAT
        HiText.text[c+2] := OldHiText.text[c];
        INC(c);
      UNTIL HiText.text[c-1]=0X;
    END;
    IF HiText.next#NIL THEN HiText.next.prev := SYS.ADR(HiText) END;
    IF HiText.prev#NIL THEN HiText.prev.next := SYS.ADR(HiText) END;
  END HiLite;


  PROCEDURE UnHiLite();

  BEGIN
    IF HiText.next#NIL THEN HiText.next.prev := OldHiText END;
    IF HiText.prev#NIL THEN HiText.prev.next := OldHiText END;
  END UnHiLite;


  PROCEDURE CalcSkipTab;  (* Make skip-table for Boyer-Moore Alg. *)
  VAR i,j: INTEGER;

  BEGIN
    FOR i := 0 TO 255 DO skipTab[i] := flen END;
    i := 0;
    FOR j := flen-1 TO 0 BY -1 DO
      IF skipTab[ORD(FindStr[j])] = flen THEN
        skipTab[ORD(FindStr[j])] := i;
      END;
      INC(i);
    END;
  END CalcSkipTab;


  PROCEDURE Search(): BOOLEAN;
  (* Searches string and hilites it if found. Result is TRUE if string found *)

  VAR ch: CHAR;
      i,j,t: INTEGER;

  BEGIN
    IF flen > BottomLine.size THEN RETURN f END;
    i := flen-1;
    FOR j := flen-1 TO 0 BY -1 DO
      LOOP
        ch := BottomLine.text[i];
        CASE ch OF "a".."z","à".."ö","ø".."þ": DEC(ch,caseDelta) ELSE END;
        IF ch = FindStr[j] THEN EXIT END;
        t := skipTab[ORD(ch)];
        IF flen-j > t THEN INC(i,flen-j) ELSE INC(i,t) END;
        IF i >= BottomLine.size THEN RETURN f END;
        j := flen-1;
      END;
      DEC(i);
    END;
    INC(i); IF i<0 THEN RETURN f END;
    SYS.SETREG(0,TryBottomnext());
    FindLine := BottomLine;
    HiLite(i,flen);
    found := w; RETURN w;
  END Search;


  PROCEDURE ShowInfo(Fast: BOOLEAN);
  VAR IStr : String;
      fmt  : StringPtr;
      i    : INTEGER;
      data : STRUCT name : e.STRPTR;
                    perc : LONGINT;
                    tlen : LONGINT;
                    flen : LONGINT;
                    lins : LONGINT;
             END;
  BEGIN
    data.name := SYS.ADR(OldName);
    data.perc := TextLength * 100 DIV FileLength;
    data.tlen := TextLength;
    data.flen := FileLength;
    data.lins := AnzLines-1;
    fmt := LocStr(MSGINFOFMT);
    e.RawDoFmt(fmt^,SYS.ADR(data),StuffChar,SYS.ADR(IStr));
    IStr[0] := 7X; IF numColors<4 THEN IStr[0] := 2X END;
    i := SHORT(str.Length(IStr));
    REPEAT IStr[i] := 20X; INC(i) UNTIL (i>=LEN(IStr)-2) OR (i>=NumColumns+2);
    IStr[i] := 0X;
    CopyToWriteText(SYS.ADR(IStr));
    AddBottomLine(SYS.ADR(writeText),Fast);
    Info := w;
    Scroll := f;
  END ShowInfo;


  PROCEDURE GetString(VAR str: ARRAY OF CHAR; int: BOOLEAN);
  VAR
    msg: I.IntuiMessagePtr;
    class: LONGSET;
    oldheight: INTEGER;

  BEGIN
    MakeThink(f,f,w);
    Busy;
    NuWindow.leftEdge    := 100;
    NuWindow.topEdge     := NuScreen.height DIV 2 - 6;
    IF Scrollable THEN INC(NuWindow.topEdge,ri.ryOffset) END;
    NuWindow.width       := NuScreen.width-200;
    NuWindow.height      := Screen.font.ySize+4;
    NuWindow.blockPen    := 1;
    NuWindow.idcmpFlags  := LONGSET{I.gadgetUp,I.activeWindow,I.inactiveWindow};
    NuWindow.flags       := LONGSET{I.rmbTrap,I.activate,I.noCareRefresh};
    NuWindow.firstGadget := SYS.ADR(StrGadget);
    NuWindow.screen      := Screen;
    NuWindow.type        := I.customScreen;
    StrGadget.leftEdge   := 4;
    StrGadget.topEdge    := 2;
    StrGadget.width      := NuWindow.width-8;
    StrGadget.height     := NuWindow.height-4;
    StrGadget.activation := {I.stringCenter,I.relVerify};
    IF int THEN INCL(StrGadget.activation,I.longint) END;
    StrGadget.gadgetType := I.strGadget;
    StrGadget.specialInfo:= SYS.ADR(StrInfo);
    StrInfo.buffer       := SYS.ADR(str);
    StrInfo.maxChars     := SHORT(LEN(str))-1;
    oldheight := Screen.height;
    IF Scrollable THEN INC(Screen.height,Screen.height) END;
    win := I.OpenWindow(NuWindow);
    Screen.height := oldheight;
    IF win # NIL THEN
      e.WaitPort(win.userPort);
      SYS.SETREG(0,I.ActivateGadget(StrGadget,win,NIL));
      LOOP
        e.WaitPort(win.userPort);
        msg := e.GetMsg(win.userPort);
        IF msg # NIL THEN
          class := msg.class;
          e.ReplyMsg(msg);
          IF (I.gadgetUp IN class) OR (I.inactiveWindow IN class) THEN
            EXIT
          END;
        END;
      END;
      I.CloseWindow(win); win := NIL;
    END;
    UnBusy;
    refresh := w; BottomLine := TopLine; NewDisplay; refresh := f;
  END GetString;


  PROCEDURE Help; (* executed when HELP or H is pressed *)

  CONST
    num = 27;

  VAR
    i,j  : INTEGER;
    help : ARRAY num OF StringPtr;
    fmt  : StringPtr;
    data : StringPtr;
    h1   : String;

  BEGIN
    data := SYS.ADR(MuchText[54]);
    fmt := LocStr(MSGH1);
    e.RawDoFmt(fmt^,SYS.ADR(data),StuffChar,SYS.ADR(h1));
    help[ 0] := SYS.ADR("");    help[ 1] := SYS.ADR(h1);
    help[ 2] := SYS.ADR("");    help[ 3] := LocStr(MSGH2);
    help[ 4] := LocStr(MSGH3);  help[ 5] := LocStr(MSGH4);
    help[ 6] := LocStr(MSGH5);  help[ 7] := LocStr(MSGH6);
    help[ 8] := LocStr(MSGH7);  help[ 9] := LocStr(MSGH8);
    help[10] := LocStr(MSGH9);  help[11] := LocStr(MSGH10);
    help[12] := LocStr(MSGH11); help[13] := LocStr(MSGH12);
    help[14] := LocStr(MSGH13); help[15] := LocStr(MSGH14);
    help[16] := LocStr(MSGH23); help[17] := LocStr(MSGH15);
    help[18] := LocStr(MSGH16); help[19] := LocStr(MSGH17);
    help[20] := LocStr(MSGH18); help[21] := SYS.ADR("");
    help[22] := LocStr(MSGH19); help[23] := LocStr(MSGH20);
    help[24] := LocStr(MSGH21); help[25] := SYS.ADR("");
    help[26] := LocStr(MSGH22);
    ClearBitMaps();
    j := (NumLines - num) DIV 2; IF j<0 THEN j:=0 END;
    i := 0;
    WHILE (i<num) & (i+j<NumLines) DO
      WriteTo(help[i],j+i);
      INC(i);
    END;
    LOOP
      e.WaitPort(Window.userPort);
      MyMsgPtr := e.GetMsg(Window.userPort);
      IF (LONGSET{I.rawKey,I.mouseButtons}*MyMsgPtr.class#LONGSET{}) & (MyMsgPtr.code<128) THEN EXIT END;
      e.ReplyMsg(MyMsgPtr);
    END;
    e.ReplyMsg(MyMsgPtr);
    BottomLine := TopLine;
    NewDisplay
  END Help;


  PROCEDURE Bottom;  (* executed when END or B is pressed *)

  BEGIN
    WaitAllRead;
    BottomLine := LastLine;
    NewDisplay
  END Bottom;


  PROCEDURE Space(): BOOLEAN;  (* executed if space or LMB is pressed *)
  (* IF result=w THEN EXIT END *)

  BEGIN
    IF (MyFile=NIL) & (BottomLine.next=NIL) THEN        (* End of file? *)
      IF wasInfo THEN RETURN w END;
      ShowInfo(Shift);
    ELSE
      IF Down THEN
        Scroll := ~Scroll;
        IF ~Scroll THEN ShowInfo(Fast) END;
      ELSE
        Down := w;
        Scroll := w;
      END;
      Fast := Shift;
    END;
    RETURN f;
  END Space;


  PROCEDURE BackSpace;  (* executed if backspace or RMB is pressed *)

  BEGIN
    Fast := Shift;
    Scroll := Down OR ~Scroll;
    Down := f
  END BackSpace;


BEGIN
  (* $IF SmallData *)
  SYS.SETREG(13,e.exec.thisTask.userData);
  (* $END *)

  (* $IFNOT ClearVars *)
  Find[0] := 0X; FindStr[0] := 0X; Goto[0] := 0X;
  (* $END *)

  Down := w;

  SYS.SETREG(0,e.Wait(mySig));

  LOOP

    IF NewDisp THEN NewDisp := f; NewDisplay END;

(*------  Type Text:  ------*)

    LOOP
      IF Scroll THEN
        IF Down THEN
          ScrollDown(Fast);
          Scroll := (MyFile#NIL) OR (BottomLine.next#NIL);
        ELSE
          ScrollUp(Fast);
          Scroll := (TopLine.prev#NIL) & (TopLine.prev.prev#NIL);
        END;
      ELSE
        MakeThink(f,f,w);
        e.WaitPort(Window.userPort);
      END;

      MyMsgPtr := e.GetMsg(Window.userPort);

      IF (MyMsgPtr#NIL) THEN
        IF ~(I.inactiveWindow IN MyMsgPtr.class) THEN EXIT END;
        e.ReplyMsg(MyMsgPtr);
        I.OldModifyIDCMP(Window,MyIdcmp-LONGSET{I.mouseButtons});
        e.WaitPort(Window.userPort);
        I.OldModifyIDCMP(Window,MyIdcmp);
      END;
    END;

    Code      := MyMsgPtr.code;
    Class     := MyMsgPtr.class;
    Qualifier := MyMsgPtr.qualifier;

    e.ReplyMsg(MyMsgPtr);


    Shift := {ie.lShift,ie.rShift,ie.capsLock} * Qualifier # {};
    Alt   := {ie.lAlt  ,ie.rAlt}               * Qualifier # {};
    Sync  := ~ (ie.control IN Qualifier);

    IF ~Sync THEN Shift := w END;


    IF (I.rawKey       IN Class) & (Code<80H) OR
       (I.mouseButtons IN Class) & ({ie.leftButton,ie.rightButton}*Qualifier#{})
    THEN
      wasInfo := f;
      IF Info THEN DelLine(Shift); wasInfo := w; END;
    END;


    IF I.mouseButtons IN Class THEN

      IF    (ie.leftButton IN Qualifier)   & Space()   THEN EXIT
      ELSIF ie.rightButton IN Qualifier THEN BackSpace END;

    ELSIF (I.rawKey IN Class) & (Code<80H) THEN

      CASE Code OF

      | SPACE: IF Space() THEN EXIT END                     (* Space *)

      | BS:    BackSpace                                    (* BackSpace *)

      | DOWN,NK2,NK3:                                       (* Down *)

          IF (MyFile=NIL) & (BottomLine.next=NIL) THEN
            I.DisplayBeep(NIL)
          ELSE
            IF Shift & (Code # NK3) THEN
              Scroll := ~Down OR ~Scroll OR ~Fast;
              Fast := w; Down := w;
            ELSE
              IF Alt OR (Code=NK3) THEN
                IF oldstyle THEN
                  i := NumLines-1;
                  REPEAT
                    ScrollDown(w);
                    DEC(i);
                  UNTIL i=0;
                ELSE
                  IF BottomLine.next#NIL THEN BottomLine := BottomLine.next END;
                  NewDisplay;
                END;
              ELSE
                ScrollDown(w);
              END;
              Scroll := f;
            END;
          END;

      | UP,NK8,NK9:                                        (* Up *)

          IF (TopLine.prev=NIL) OR (TopLine.prev.prev=NIL) THEN
            I.DisplayBeep(NIL)
          ELSE
            IF Shift & (Code # NK9) THEN
              Scroll := Down OR ~Scroll OR ~Fast;
              Fast := w; Down := f;
            ELSE
              IF Alt OR (Code=NK9) THEN
                i := NumLines-1;
                IF oldstyle THEN
                  REPEAT
                    ScrollUp(w);
                    DEC(i);
                  UNTIL i=0;
                ELSE
                  (*IF TopLine.prev#NIL THEN*)
                  BottomLine := TopLine;
                  WHILE (i>0) & (BottomLine.prev#NIL) DO
                    BottomLine := BottomLine.prev;
                    DEC(i);
                  END;
                  NewDisplay;
                  (*END;*)
                END;
              ELSE
                ScrollUp(w);
              END;
              Scroll := f;
            END;
          END;

      | CR,ENTER: ScrollDown(f); Scroll := f;              (* CR *)

      | NK7: BottomLine := FirstLine; NewDisplay           (* Home *)

      | NK1: Bottom                                        (* End *)

      | F1..F10:                                           (* F1..F10 *)

          i := Code-F1;
          IF ~ Shift & (TextMarkers[i]#NIL) THEN
            BottomLine := TextMarkers[i];
            NewDisplay;
          ELSE
            TextMarkers[i] := TopLine;
          END

      | NK0:  IF ~wasInfo THEN ShowInfo(Shift) END;        (* NK 0 *)

      | HELP: Help                                         (* Help *)

      | ESC:  EXIT                                         (* Quit *)

      | NK5:  IF wasInfo THEN EXIT ELSE ShowInfo(Shift)END; (* safe Quit *)

      ELSE

        IF Code<40H THEN         (* examine vanilla keycode: *)

          chr := KeyMap[Code];

          CASE chr OF

          | "t": BottomLine := FirstLine; NewDisplay       (* Home *)

          | "b": Bottom;                                   (* End *)

          | "f","n","p":                                   (* Find, Next, Previous *)

            IF chr="f" THEN
              caseDelta := 32; IF Shift THEN caseDelta := 0 END;
              GetString(Find,f);
              FindLine := NIL; flen := 0;
              LOOP
                FindStr[flen] := Find[flen];
                CASE FindStr[flen] OF
                  "a".."z","à".."ö","ø".."þ": DEC(FindStr[flen],caseDelta) |
                  0X: EXIT;
                ELSE
                END;
                INC(flen);
              END;
              CalcSkipTab;
            END;
            found := f;
            IF FindStr[0]#0X THEN
              Busy;
              i := NumLines;
              IF FindLine # NIL THEN FindLine := FindLine.next END;
              WHILE (i>0) & (BottomLine#NIL) & (BottomLine#FindLine) DO
                BottomLine := BottomLine.prev; DEC(i);
              END;
              IF (BottomLine # FindLine) OR (BottomLine=NIL) THEN
                BottomLine := TopLine
              END;
              IF chr # "p" THEN                          (* next *)
                WHILE (BottomLine # NIL) & ~ Search() DO
                  SYS.SETREG(0,TryBottomnext());
                  BottomLine := BottomLine.next;
                END;
              ELSE                                       (* previous *)
                IF BottomLine.prev#NIL THEN BottomLine:=BottomLine.prev END;
                REPEAT
                  BottomLine := BottomLine.prev
                UNTIL (BottomLine=NIL) OR Search();
              END;
              IF BottomLine#NIL THEN
                li := NumLines DIV 2;
                WHILE (li>0) & (BottomLine.prev#NIL) DO BottomLine := BottomLine.prev; DEC(li) END;
              END;
              UnBusy;
            END;

            IF ~ found THEN
              I.DisplayBeep(NIL);
              BottomLine := TopLine;
            END;
            NewDisplay;
            IF found THEN UnHiLite END;

          | "w","c":                                       (* write block *)
            IF (TextMarkers[0]#NIL) & (TextMarkers[1]#NIL) & ~print & ~save THEN
              savefrom := 0; savesize := 0;
              l := TextMarkers[0].prev; WHILE l.prev#NIL DO l := l.prev; INC(savefrom,l.len) END;
              l := TextMarkers[1].prev; WHILE l#NIL DO INC(savesize,l.len); l := l.prev END;
              l := TextMarkers[1]; i := NumLines; WHILE (i>1) & (l#NIL) DO DEC(i); INC(savesize,LONG(l.len)); l := l.next END;
              DEC(savesize,savefrom);
              IF savesize>0 THEN
                IF chr="c" THEN copy := w ELSE
                  GetString(WriteName,f);
                  copy := f;
                END;
                WaitAllRead; save := w; e.Signal(SYS.ADR(Me.task),mySig);
              END
            END

          | "o":                                           (* Print *)

            IF Shift & Alt & ~print & ~save THEN
              nameptr := SYS.ADR(Name);
              e.RawDoFmt("TYPE %s TO PRT:",SYS.ADR(nameptr),StuffChar,SYS.ADR(PStr));
              WaitAllRead; print := w; e.Signal(SYS.ADR(Me.task),mySig);
            END

          | "l":                                           (* Load Text *)

            ClearBitMaps;
            NewText := w; e.Signal(SYS.ADR(Me.task),mySig);
            REPEAT UNTIL (mySigBit IN e.Wait(mySig)) & ~ NewText |

          | "g":                                           (* goto *)

            GetString(Goto,w);
            li := SHORT(StrInfo.longInt);
            Busy;
            BottomLine := FirstLine;
            WHILE (li>0) & TryBottomnext() DO
              BottomLine := BottomLine.next;
              DEC(li)
            END;
            UnBusy;
            NewDisplay

          | "h":     Help                                  (* Help *)

          | "q","x": IF wasInfo THEN EXIT ELSE ShowInfo(Shift) END; (* safe Quit *)

          ELSE END;

        END;   (* IF Code<40H THEN *)

      END;   (* CASE Code OF *)

    END;   (* IF I.rawKey IN Class THEN *)

  END;   (* LOOP *)

  Done := w;
  e.Signal(SYS.ADR(Me.task),mySig);
  LOOP SYS.SETREG(0,e.Wait(LONGSET{})) END;

END ShowProc;

(* $Debug= *)

(*--------------------------  File Requester:  ----------------------------*)


PROCEDURE FileReq(VAR Name: String);

CONST
  dummy     = u.user + 80000H;
  taghail   = dummy + 1;
  window    = dummy + 2;
  leftEdge  = dummy + 3;         (* Initialize LeftEdge                  *)
  topEdge   = dummy + 4;         (* Initialize TopEdge                   *)
  width     = dummy + 5;
  height    = dummy + 6;
  hookFunc  = dummy + 7;         (* Hook function pointer                *)
  file      = dummy + 8;         (* Initial name of file follows         *)
  dir       = dummy + 9;         (* Initial string for filerequest dir   *)
  pattern   = dummy + 10;
  funcFlags = dummy + 20;
  fiDir     = u.user + 50;
  longPath  = 0;
  patGad    = 0;

VAR
  fr: FileRequesterPtr;
  pscr: I.ScreenPtr;
  i,j: INTEGER;
  res: BOOLEAN;

  PROCEDURE AllocAslRequest  {asl,-48} (type{0}: LONGINT;
                                        tag{8}..: e.APTR): FileRequesterPtr;
  PROCEDURE FreeAslRequest   {asl,-54} (fr{8}: FileRequesterPtr);
  PROCEDURE RequestFile      {asl,-42} (fr{8}: FileRequesterPtr): e.APTR;

  PROCEDURE FileRequest{arp,-294}(VAR filereq{8}: FileRequester): BOOLEAN;

BEGIN
  j := SHORT(str.Length(Name));
  WHILE (j>0) & (Name[j]#":") & (Name[j]#"/") DO DEC(j) END;
  IF j=0 THEN j := -1 END;
  i := 0;
  WHILE i<=j DO Dirname[i] := Name[i]; INC(i) END; Dirname[i] := 0X;
  j := 0;
  REPEAT Filename[j] := Name[i]; INC(j); INC(i) UNTIL Name[i-1]=0X;

  LOOP
    IF I.int.libNode.version >= 37 THEN
      pscr := I.LockPubScreen(NIL);
      IF pscr#NIL THEN
        I.ScreenToFront(pscr);
        I.UnlockPubScreen(NIL,pscr);
        EXIT
      END;
    END;
    SYS.SETREG(0,I.WBenchToFront());
    EXIT
  END;

  IF asl=NIL THEN asl := e.OpenLibrary("asl.library",36) END;
  IF asl#NIL THEN
    fr := AllocAslRequest(0,taghail, SYS.ADR(MuchText),
                            file,    SYS.ADR(Filename),
                            dir,     SYS.ADR(Dirname),
                            pattern, SYS.ADR(Pattern),
                            funcFlags,ASH(1,patGad),
                            u.done);
    IF fr=NIL THEN Request(LocStr(MSGOOM)^) END;
    res := RequestFile(fr)#NIL;
    IF res THEN
      Filename := fr.ddef^;
      Dirname  := fr.ddir^;
    END;
    FreeAslRequest(fr);
    IF ~res THEN HALT(d.ok) END;
  ELSE
    IF arp=NIL THEN arp := e.OpenLibrary("arp.library",39) END;
    IF arp#NIL THEN
      FR.hail := SYS.ADR(MuchText);
      FR.ddef := SYS.ADR(Filename);
      FR.ddir := SYS.ADR(Dirname);
      FR.flags2 := SHORTSET{longPath};
      FR.wind := NIL;
      IF ~FileRequest(FR) THEN HALT(d.ok) END;
    ELSE
      Request("Need ARP for filereq")
    END;
  END;
  Name := Dirname;
  i := SHORT(str.Length(Name));
  IF (i>0) THEN
    CASE Name[i-1] OF "/",":": ELSE
      Name[i] := "/"; INC(i);
    END;
  END;
  j := 0;
  LOOP
    Name[i] := Filename[j];
    IF (Name[i]=0X) OR (i=255) THEN EXIT END;
    INC(i);
    INC(j);
  END;
  Name[i] := 0X;
  IF Screen#NIL THEN I.ScreenToFront(Screen) END;
  IF Window#NIL THEN IF I.ActivateWindow(Window) THEN END END;
END FileReq;


(*--------------------------  Decrunch:  ----------------------------*)


PROCEDURE DirExists(name: ARRAY OF CHAR): BOOLEAN; (* $CopyArrays- *)
VAR lock: d.FileLockPtr;
    result: BOOLEAN;
    oldwp: e.APTR;
BEGIN
  result := f;
  oldwp := Me.windowPtr;
  Me.windowPtr := -1;
  lock := d.Lock(name,d.sharedLock);
  IF lock # NIL THEN
    result := w;
    d.UnLock(lock)
  END;
  Me.windowPtr := oldwp;
  RETURN result
END DirExists;



PROCEDURE Decrunch;

CONST
  tagBase    = u.user + ORD("X")*256 + ORD("P");
  inName     = tagBase+01H;
  inFH       = tagBase+02H;
  outName    = tagBase+10H;
  password   = tagBase+24H;
  getError   = tagBase+25H;
  shortError = tagBase+31H;
  typePacked = 1;
  flagsPassword = 0;

TYPE
  XpkFib = STRUCT
    type       : LONGINT;    (* Unpacked, packed, archive? *)
    uLen       : LONGINT;
    cLen       : LONGINT;
    nLen       : LONGINT;
    uCur       : LONGINT;
    cCur       : LONGINT;
    id         : LONGINT;
    packer     : ARRAY 6 OF CHAR;
    subVersion : INTEGER;
    masVersion : INTEGER;
    flags      : LONGSET;
    head       : ARRAY 16 OF CHAR;
    ratio      : LONGINT;
    reserved   : ARRAY 8 OF LONGINT;
  END;

VAR
  file: d.FileHandlePtr;
  err: LONGINT;
  xpkFib: XpkFib;
  errBuf: ARRAY 81 OF CHAR;

  PROCEDURE ExamineTags {xpk,-36}(VAR fib{8}  : XpkFib;
                                  tag1{9}..   : e.APTR): LONGINT;
  PROCEDURE UnpackTags  {xpk,-48}(tag1{8}..   : e.APTR): LONGINT;

BEGIN
  Decrunched := f;
  OldName := Name;

  IF DirExists("T:") THEN Name := "T:" ELSE Name := "RAM:" END;

  e.RawDoFmt("mm_%lx.decr",SYS.ADR(Me),StuffChar,SYS.ADR(Name[str.Length(Name)]));

  IF xpk=NIL THEN
    xpk := e.OpenLibrary("xpkmaster.library",1);
  END;
  IF xpk#NIL THEN
    err := ExamineTags(xpkFib,inFH,SYS.VAL(LONGINT,MyFile),u.done);
    IF (err#0) & (err#-20) THEN
      Request(LocStr(MSGOOM)^)
    END;
    IF (err=-20) OR (xpkFib.type#typePacked) THEN
      Name := OldName;
      RETURN
    END;
    Busy;
    err := UnpackTags(inFH,   SYS.VAL(LONGINT,MyFile),
                  outName,    SYS.ADR(Name),
                  password,   SYS.ADR(Password),
                  getError,   SYS.ADR(errBuf),
                  shortError, e.true,
                  u.done);
    UnBusy;
    IF err#0 THEN Request(errBuf) END;
    file := d.Open(Name,d.oldFile);
    IF file#NIL THEN
      Decrunched := w;
      d.OldClose(MyFile);
      MyFile := file;
      RETURN
    ELSE
      Request(LocStr(MSGCOF)^);
    END;
  END;
  Name := OldName;
END Decrunch;


(*-----------------  Screen Mode Requester:  ------------------------*)


PROCEDURE GetNode (VAR list: e.List; index: LONGINT): e.NodePtr;
  VAR n: e.NodePtr;
BEGIN
  n := list.head;
  WHILE index > 0 DO
    IF n.succ=NIL THEN RETURN NIL END;
    n := n.succ;
    DEC(index);
  END;
  RETURN n;
END GetNode;


PROCEDURE ScreenModeReq (VAR displayID : LONGINT): INTEGER;
CONST
  gadLISTVIEW    = 1;
  gadBUTTONSave  = 2;
  gadBUTTONUse   = 3;
  gadBUTTONCancel= 4;

  Topaz80 = g.TextAttr(SYS.ADR("topaz.font"), 8, SHORTSET{}, SHORTSET{});

TYPE
  MyNodePtr = UNTRACED POINTER TO MyNode;
  MyNode = STRUCT (node: e.Node)
             displayID: LONGINT;
           END;

VAR
  ng            : gt.NewGadget;
  gad,glist     : I.GadgetPtr;
  win           : I.WindowPtr;
  pub           : I.ScreenPtr;
  font          : g.TextAttrPtr;
  width,height  : INTEGER;
  txW,txH       : INTEGER;
  result,index  : INTEGER;
  firstindex    : INTEGER;
  topborder     : INTEGER;
  x1,x2,min     : INTEGER;
  terminated    : BOOLEAN;
  lvlist        : e.List;
  lvSelectedTag : LONGINT;
  vi            : e.APTR;
  imsg          : I.IntuiMessagePtr;
  node          : MyNodePtr;
  dispID        : LONGINT;
  displayInfo   : g.DisplayInfo;
  nameInfo      : g.NameInfo;


  PROCEDURE StrLen (str: e.STRPTR; min: INTEGER): INTEGER;
  VAR it: I.IntuiText;
      len: INTEGER;
  BEGIN
    (* $IFNOT ClearVars *)
    len := 0;
    it.leftEdge := 0; it.topEdge  := 0; it.frontPen := 0; it.backPen  := 0;
    it.drawMode := SHORTSET{}; it.nextText := NIL;
    (* $END *)
    IF str#NIL THEN
      it.iTextFont := font; it.iText := str;
      len := I.IntuiTextLength(it);
    END;
    IF len > min THEN RETURN len ELSE RETURN min END;
  END StrLen;

BEGIN
  (* $IFNOT ClearVars *)
  win := NIL; vi := NIL; glist := NIL; pub := NIL; result := 0;
  (* $END *)

  LOOP
    pub := I.LockPubScreen(NIL);         IF pub=NIL THEN EXIT END;
    vi  := gt.GetVisualInfo(pub,u.done); IF vi =NIL THEN EXIT END;
    topborder := pub.wBorTop + pub.font.ySize + 1;

    font := pub.font;
    txW := pub.rastPort.txWidth; txH := pub.rastPort.txHeight;
    width := txW * 36 + 16; height := txH * 8 + 32;
    IF ((width+pub.wBorLeft+pub.wBorRight) > pub.width) OR ((height+topborder+pub.wBorBottom) > pub.height) THEN
      font := SYS.ADR(Topaz80);
      txW := 8; txH := 8;
      width := 8 * 36 + 16; height := 8 * 8 + 32;
    END;
    min := txW * 6;

    gad := gt.CreateContext(glist);

    ng.textAttr := font;
    ng.visualInfo := vi;
    ng.userData := NIL;

    ng.leftEdge := 16;
    ng.height := txH+4;
    ng.topEdge := topborder+height-ng.height-5;
    ng.gadgetText := LocStr(MSGSAVE);
    ng.width := StrLen(ng.gadgetText,min)+8;
    ng.gadgetID := gadBUTTONSave;
    ng.flags := LONGSET{};
    x1 := ng.leftEdge+ng.width;

    gad := gt.CreateGadget(gt.buttonKind, gad, ng, u.done);

    ng.gadgetText := LocStr(MSGCANCEL);
    ng.width := StrLen(ng.gadgetText,min)+8;
    ng.leftEdge := width-ng.width-8;
    ng.gadgetID := gadBUTTONCancel;
    x2 := ng.leftEdge;

    gad := gt.CreateGadget(gt.buttonKind, gad, ng, u.done);

    ng.gadgetText := LocStr(MSGUSE);
    ng.width := StrLen(ng.gadgetText,min)+8;
    ng.leftEdge := (x1+x2-ng.width) DIV 2;
    ng.gadgetID := gadBUTTONUse;

    gad := gt.CreateGadget(gt.buttonKind, gad, ng, u.done);

    lvlist.head := SYS.ADR(lvlist.tail);
    lvlist.tail := NIL;
    lvlist.tailPred := SYS.ADR(lvlist.head);

    index := 0;
    firstindex := -1;
    dispID := g.NextDisplayInfo(g.invalidID);

    WHILE dispID # g.invalidID DO
      IF (g.GetDisplayInfoData(NIL,displayInfo,SIZE(displayInfo),g.dtagDisp,dispID) > 0) &
         (displayInfo.notAvailable = 0) &
         (LONGSET{g.isHAM,g.isExtraHalfBrite,g.isDualPF} * displayInfo.propertyFlags = LONGSET{}) &
         (g.GetDisplayInfoData(NIL,nameInfo,SIZE(nameInfo),g.dtagName,dispID) > 0)
      THEN
        SYS.ALLOCATE(node);
        IF node # NIL THEN
          SYS.ALLOCATE(node.node.name);
          IF node.node.name # NIL THEN
            COPY(nameInfo.name,node.node.name^);
            node.displayID := dispID;
            e.AddTail(lvlist, node);
            IF dispID=displayID THEN firstindex := index END;
            INC(index);
          ELSE
            EXIT
          END;
        ELSE
          EXIT
        END;
      END;
      dispID := g.NextDisplayInfo(dispID);
    END;

    ng.leftEdge := 16;
    ng.topEdge := txH+8+topborder;
    ng.width := width-25;
    ng.height := txH*6+15;
    ng.gadgetText := LocStr(MSGCHOOSESM);
    ng.gadgetID := gadLISTVIEW;
    ng.flags := LONGSET{gt.highLabel,gt.placeTextAbove};

    IF firstindex >= 0 THEN lvSelectedTag := gt.lvSelected
                       ELSE lvSelectedTag := u.ignore END;

    gad := gt.CreateGadget(gt.listViewKind, gad, ng,
                    gt.lvLabels,       SYS.ADR(lvlist),
                    gt.lvShowSelected, NIL,
                    gt.lvScrollWidth,  txW*2,
                    I.layoutaSpacing,  2,
                    lvSelectedTag,     firstindex,
                    u.done);
    IF gad = NIL THEN EXIT END;

    win := I.OpenWindowTagsA(NIL,
                             I.waLeft,        30,
                             I.waTop,         20,
                             I.waInnerWidth,  width,
                             I.waInnerHeight, height,
                             I.waTitle,       SYS.ADR(MuchText),
                             I.waFlags,       LONGSET{I.activate,I.windowDrag,I.windowDepth,I.simpleRefresh,I.rmbTrap},
                             I.waIDCMP,       gt.listViewIDCMP+gt.buttonIDCMP+LONGSET{I.gadgetUp,I.refreshWindow},
                             I.waCustomScreen,pub,
                             I.waGadgets,     glist,
                             u.done);
    IF win = NIL THEN EXIT END;
    gt.RefreshWindow(win, NIL);

    dispID := displayID;
    terminated := f;

    WHILE ~terminated DO
      e.WaitPort(win.userPort);
      LOOP
        IF terminated THEN EXIT END;
        imsg := gt.GetIMsg(win.userPort);
        IF imsg=NIL THEN EXIT END;
        gad := imsg.iAddress;
  
        IF I.gadgetUp IN imsg.class THEN
          CASE gad.gadgetID OF
          | gadBUTTONSave:   result := 1; displayID := dispID; terminated := w;
          | gadBUTTONUse:    result := 2; displayID := dispID; terminated := w;
          | gadBUTTONCancel: terminated := w;
          | gadLISTVIEW:     node := GetNode(lvlist,imsg.code);
                             IF node # NIL THEN dispID := node.displayID END;
          ELSE
          END;
        END;

        IF I.refreshWindow IN imsg.class THEN
          gt.BeginRefresh(win);
          gt.EndRefresh(win, I.LTRUE);
        END;

        gt.ReplyIMsg(imsg);
  
      END;
    END;

    EXIT
  END;

  IF win   # NIL THEN I.CloseWindow(win) END;
  IF glist # NIL THEN gt.FreeGadgets(glist) END;
  IF vi    # NIL THEN gt.FreeVisualInfo(vi) END;
  IF pub   # NIL THEN I.UnlockPubScreen(NIL,pub) END;

  RETURN result;
END ScreenModeReq;


(*-------------------------------------------------------------------------*)


PROCEDURE SavePrefs;

VAR
  lock: d.FileLockPtr;

  PROCEDURE SavePrefsName(name: StringPtr);
  VAR file: d.FileHandlePtr;
      l: LONGINT;
  BEGIN
    file := d.Open(name^,d.newFile);
    IF file # NIL THEN
      SYS.SETREG(0,d.Write(file,"FORM",4));
      l := 16;
      SYS.SETREG(0,d.Write(file,l,4));
      SYS.SETREG(0,d.Write(file,"MUMO",4));
      SYS.SETREG(0,d.Write(file,"DPID",4));
      l := 4;
      SYS.SETREG(0,d.Write(file,l,4));
      SYS.SETREG(0,d.Write(file,id,4));
      d.OldClose(file);
    END;
  END SavePrefsName;

BEGIN
  IF DirExists("ENV:") THEN
    IF ~DirExists("ENV:MuchMore") THEN
      lock := d.CreateDir("ENV:MuchMore");
      IF lock#NIL THEN d.UnLock(lock) END;
    END;
    SavePrefsName(SYS.ADR("ENV:MuchMore/MuchMore.prefs"))
  END;
  IF DirExists("ENVARC:") THEN
    IF ~DirExists("ENVARC:MuchMore") THEN
      lock := d.CreateDir("ENVARC:MuchMore");
      IF lock#NIL THEN d.UnLock(lock) END;
    END;
    SavePrefsName(SYS.ADR("ENVARC:MuchMore/MuchMore.prefs"))
  END;
END SavePrefs;


(*-------------------------------------------------------------------------*)


PROCEDURE LoadPrefs;

VAR file: d.FileHandlePtr;
    l,i,s: LONGINT;
    ok: BOOLEAN;

BEGIN
  file := NIL;
  IF DirExists("PROGDIR:") THEN
    file := d.Open("PROGDIR:MuchMore.prefs",d.oldFile);
  END;
  IF (file=NIL) & DirExists("ENV:") THEN
    file := d.Open("ENV:MuchMore/MuchMore.prefs",d.oldFile);
  END;
  IF file # NIL THEN
    LOOP
      IF (d.Read(file,i,4) <= 0)        OR
         (i # SYS.VAL(LONGINT,"FORM"))  OR
         (d.Read(file,s,4) <= 0)        OR
         (d.Read(file,i,4) <= 0)        OR
         (i # SYS.VAL(LONGINT,"MUMO"))    THEN EXIT END;
      WHILE w DO
        IF (d.Read(file,i,4) <= 0)      OR
           (d.Read(file,s,4) <= 0)        THEN EXIT END;
        IF ODD(s) THEN INC(s) END;
        IF (s=4) & (i=SYS.VAL(LONGINT,"DPID")) THEN
          SYS.SETREG(0,d.Read(file,id,4));
        ELSE
          IF s < 0 THEN EXIT END;
          SYS.SETREG(0,d.Seek(file,s,d.current));
        END;
      END;

      EXIT;
    END;
    d.OldClose(file);
  END;
END LoadPrefs;


(*------------------------  Get Tooltypes:  --------------------------*)


PROCEDURE ParseIcon(icon: DiskObjectPtr);
VAR tt: StringPtr;

BEGIN
  IF icon # NIL THEN
    tt := FindToolType(icon.toolTypes,"COLORS");     IF (tt # NIL) THEN COPY(tt^,Pens) END;
    tt := FindToolType(icon.toolTypes,"EXTRASPACE"); IF (tt # NIL) THEN spacing := SHORT(StrToInt(tt,10)) END;
    tt := FindToolType(icon.toolTypes,"FONT");       IF (tt # NIL) THEN COPY(tt^,FontName) END;
    tt := FindToolType(icon.toolTypes,"PASSWORD");   IF (tt # NIL) THEN COPY(tt^,Password) END;
    tt := FindToolType(icon.toolTypes,"NOOSCAN");    IF (tt # NIL) & (MatchToolValue(tt^,"TRUE")) THEN noOscan := w END;
    tt := FindToolType(icon.toolTypes,"OLDSTYLE");   IF (tt # NIL) & (MatchToolValue(tt^,"TRUE")) THEN oldstyle := w END;
    tt := FindToolType(icon.toolTypes,"PLANES");     IF (tt # NIL) THEN NuScreen.depth := SHORT(StrToInt(tt,10)) END;
    tt := FindToolType(icon.toolTypes,"SCROLLMODE"); IF (tt # NIL) THEN scrollmode := SHORT(StrToInt(tt,10)) END;
    tt := FindToolType(icon.toolTypes,"TABWIDTH");   IF (tt # NIL) THEN tabw := SHORT(StrToInt(tt,10)) END;
    tt := FindToolType(icon.toolTypes,"TOGGLELACE"); IF (tt # NIL) & (MatchToolValue(tt^,"TRUE")) THEN lace := ~lace END;
    tt := FindToolType(icon.toolTypes,"TOOLPRI");    IF (tt # NIL) THEN taskpri := SHORT(SHORT(StrToInt(tt,10))) END;
    FreeDiskObject(icon);
  END;
END ParseIcon;


(*------------------------------  MAIN:  ----------------------------------*)

BEGIN

(*------  Init:  ------*)

  mySigBit := -1;
  Me := SYS.VAL(d.ProcessPtr,ol.Me);
  OldDir := Me.currentDir;
  oldpri := Me.task.node.pri; taskpri := oldpri;
  WriteName := "PRT:";
  MemIndex := ChunkSize;
  Sync := w;
  FontSize := 8;
  Pattern := "~(#?.info)";
  id := g.invalidID;
  tabw := 8;
  NuScreen.depth := 2;

  IF g.gfx.libNode.version >= 37 THEN scrollmode := 1 END;

  I.GetPrefs(Prefs,SIZE(Prefs)); lace := Prefs.laceWB # SHORTSET{};

  mySigBit := e.AllocSignal(-1);
  IF mySigBit<0 THEN HALT(d.fail) END;
  mySig := LONGSET{mySigBit};

  iconBase := e.OpenLibrary("icon.library",33);

  IF loc.base # NIL THEN
    catalog := loc.OpenCatalog(NIL,"muchmore.catalog",u.end);
  END;

  ol.OutOfMemHandler := OutOfMemHandler;

  INCL(ol.MemReqs,e.public);

  ol.New(ShowStack,ShowStackSize);
  NEW(ShowTask);
  NEW(FileInfo);
  NEW(ievent);
  NEW(conreq);
  NEW(Buffer);

(*------  Setup:  ------*)

  NEW(FirstLine);
(*FirstLine.size := 0;
  FirstLine.text[0] := 0X; *)

(*------  Start:  ------*)

  LoadPrefs;

  IF ol.wbStarted THEN

    wbm := ol.wbenchMsg;
    IF iconBase # NIL THEN
      oldLace:=lace;
      j := SHORT(wbm.numArgs); IF j>2 THEN j := 2 END;
      FOR i := 0 TO j-1 DO
        lace := oldLace;
        SYS.SETREG(0,d.CurrentDir(wbm.argList[i].lock));
        nameptr := wbm.argList[i].name;
        icon := GetDiskObject(nameptr^);
        IF (icon=NIL) & (d.base.lib.version >= 37) THEN
          SYS.SETREG(0,d.CurrentDir(d.GetProgramDir()));
          icon := GetDiskObject(nameptr^);
        END;
        ParseIcon(icon);
      END;
    END; (* IF iconBase#NIL *)

    IF wbm.numArgs >= 2 THEN
      ArgPtr := wbm.argList^[1].name; Name := ArgPtr^;
      SYS.SETREG(0,d.CurrentDir(wbm.argList^[1].lock));
    ELSE
      SYS.SETREG(0,d.CurrentDir(wbm.argList^[0].lock));
      FileReq(Name)
    END;

  ELSE

    IF d.dos.lib.version < 37 THEN
      IF ol.dosCmdLen > 1 THEN
        CommLine := ol.dosCmdBuf;
        j := 0;
        LOOP
          i := 0;
          WHILE CommLine[j]=20X DO INC(j) END;
          IF CommLine[j]=0AX THEN EXIT END;
          IF CommLine[j]='"' THEN
            INC(j);
            LOOP
              CASE CommLine[j] OF
              | '"': INC(j); EXIT
              | 0AX:                     EXIT
              ELSE
                option[i] := CommLine[j]; INC(i); INC(j);
              END;
            END;
          ELSE
            WHILE (CommLine[j]#0AX) & (CommLine[j]#20X) DO
              option[i] := CommLine[j]; INC(i); INC(j);
            END;
          END;
          option[i]:= 0X;
          IF option="?"  THEN Request(usage) END;
          IF option[0]="-" THEN
            CASE CAP(option[1]) OF
              "A": tabw := SHORT(StrToInt(SYS.ADR(option[2]),10)) |
              "B": NuScreen.depth := SHORT(StrToInt(SYS.ADR(option[2]),10)) |
              "C": GetStr(SYS.ADR(option[2]),Pens) |
              "E": spacing := SHORT(StrToInt(SYS.ADR(option[2]),10)) |
              "F": GetStr(SYS.ADR(option[2]),FontName) |
              "L": lace := ~lace |
              "O": oldstyle := w |
              "P": GetStr(SYS.ADR(option[2]),Password) |
              "S": scrollmode := SHORT(StrToInt(SYS.ADR(option[2]),10)) |
              "T": taskpri := SHORT(SHORT(StrToInt(SYS.ADR(option[2]),10))) |
            ELSE
              Request(usage);
            END;
          ELSE
            COPY(option,Name);
          END;
        END;
      END;

    ELSE  (* d.dos.lib.version >= 37 *)

      IF iconBase#NIL THEN
        oldcd := d.CurrentDir(d.GetProgramDir());
        IF d.GetProgramName(Name,LEN(Name)) THEN
          icon := GetDiskObject(Name);
          ParseIcon(icon);
          Name[0] := 0X;
        END;
        oldcd := d.CurrentDir(oldcd);
      END;

      rd := d.ReadArgs("A=TABWIDTH/N/K,B=PLANES/N/K,C=COLORS/K,D=DISPMODEREQ/S,E=EXTRASPACE/N/K,F=FONT/K,N=NOOSCAN/S,O=OLDSTYLE/S,P=PASSWORD/K,S=SCROLLMODE/N/K,T=TOOLPRI/N/K,FILE",args,NIL);
      IF rd=NIL THEN
        SYS.SETREG(0,d.PrintFault(d.IoErr(),NIL));
        HALT(d.warn)
      END;
      IF args.a # NIL THEN tabw := SHORT(args.a^) END;
      IF args.b # NIL THEN NuScreen.depth := SHORT(args.b^) END;
      IF args.c # NIL THEN COPY(args.c^,Pens) END;
      IF args.d # NIL THEN modeReq := w END;
      IF args.e # NIL THEN spacing := SHORT(args.e^) END;
      IF args.f # NIL THEN COPY(args.f^,FontName) END;
      IF args.n # NIL THEN noOscan := w END;
      IF args.o # NIL THEN oldstyle := w END;
      IF args.p # NIL THEN COPY(args.p^,Password) END;
      IF args.s # NIL THEN scrollmode := SHORT(args.s^) END;
      IF args.t # NIL THEN taskpri := SHORT(SHORT(args.t^)) END;
      IF args.file # NIL THEN COPY(args.file^,Name) END;
      d.FreeArgs(rd); rd := NIL;
    END;
  END;

  IF tabw < 1 THEN tabw := 1 END;

  IF NuScreen.depth < 1 THEN NuScreen.depth := 1 END;
  IF NuScreen.depth > 2 THEN NuScreen.depth := 2 END;

  IF taskpri#oldpri THEN SYS.SETREG(0,e.SetTaskPri(Me,taskpri)) END;

  IF FontName[0]#0X THEN
    i := 0;
    j := SHORT(str.Length(FontName));
    LOOP
      IF i >= j THEN EXIT END;
      IF FontName[i]='/' THEN
        FontName[i] := 0X;
        FontSize := SHORT(StrToInt(SYS.ADR(FontName[i+1]),10));
        j := i;
        EXIT
      END;
      INC(i);
    END;
    IF j<LEN(FontName)-6 THEN
      e.CopyMem(".font",FontName[j],6);
    END;
  END;

  IF FontSize>50 THEN FontSize := 50 END;
  IF FontSize< 5 THEN FontSize :=  5 END;

  IF spacing< 0 THEN spacing :=  0 END;
  IF spacing>20 THEN spacing := 20 END;

  IF modeReq & (gt.base#NIL) THEN
    IF ScreenModeReq(id) = 1 THEN SavePrefs END;
  END;

(*------  Open File:  ------*)

  LOOP
    MyFile := d.Open(Name,d.oldFile);
    IF MyFile#NIL THEN EXIT END;
    FileReq(Name)
  END;

(*------------------------  Open Display:  --------------------------------*)

(*------  Open Screen:  ------*)

  IF lace THEN
    NuScreen.viewModes := {g.hires,g.lace};
    NuScreen.height := g.gfx.normalDisplayRows*2
  ELSE
    NuScreen.viewModes := {g.hires};
    NuScreen.height := g.gfx.normalDisplayRows
  END;
  NuScreen.width  := g.gfx.normalDisplayColumns;
  NuScreen.type   := I.customScreen+{I.screenQuiet};

  LOOP

    IF I.int.libNode.version >= 37 THEN

      IF id=g.invalidID THEN
        id := g.defaultMonitorID;
        pub := I.LockPubScreen("Workbench");
        IF pub # NIL THEN
          id := g.GetVPModeID(SYS.ADR(pub.viewPort));
          I.UnlockPubScreen(NIL,pub);
        END;
      END;

      IF g.GetDisplayInfoData(NIL,dims,SIZE(dims),g.dtagDims,id) > 0 THEN
        IF noOscan THEN
          NuScreen.width     := dims.nominal.maxX - dims.nominal.minX + 1;
          NuScreen.height    := dims.nominal.maxY - dims.nominal.minY + 1;
          overscanTag := u.ignore;
        ELSE
          NuScreen.width     := dims.txtOScan.maxX - dims.txtOScan.minX + 1;
          NuScreen.height    := dims.txtOScan.maxY - dims.txtOScan.minY + 1;
          overscanTag := I.saOverscan;
        END;
        IF g.GetDisplayInfoData(NIL,disp,SIZE(disp),g.dtagDisp,id) > 0 THEN
          lace := g.isLace IN disp.propertyFlags;
          Scrollable := (g.isDraggable IN disp.propertyFlags) (* & ((g.gfx.libNode.version<39) OR ~(20 IN disp.propertyFlags)) *);
          IF scrollmode=3 THEN Scrollable := f END;
          IF Scrollable THEN INC(NuScreen.height,NuScreen.height) END;

          Screen := I.OpenScreenTags(NuScreen,
                                     I.saDisplayID,id,
                                     overscanTag,I.oScanText,
                                     I.saPens,SYS.ADR("\xFF\xFF"),
                                     u.end);
        END;
      END;

    ELSE

      Scrollable := w;
      IF scrollmode=3 THEN Scrollable := f END;
      IF Scrollable THEN INC(NuScreen.height,NuScreen.height) END;
      Screen := I.OpenScreen(NuScreen);

    END;

    IF Screen#NIL THEN EXIT END;

    DEC(NuScreen.depth);
    IF NuScreen.depth=0 THEN Request(LocStr(MSGCOS)^) END;
  END;

  numColors := ASH(LONG(1),NuScreen.depth);

  rp := SYS.ADR(Screen.rastPort);
  BM := rp.bitMap;
  ri := Screen.viewPort.rasInfo;

  IF Pens[0]#0X THEN
    i := 0;
    chptr := SYS.ADR(Pens);
    Pens[LEN(Pens)-1] := 0X;
    LOOP
      Cols[i] := SHORT(StrToInt(SYS.VAL(StringPtr,chptr),16));
      INC(i); IF i=4 THEN EXIT END;
      WHILE (chptr^#0X) & (chptr^#",") DO
        chptr:=SYS.VAL(e.APTR,SYS.VAL(LONGINT,chptr)+1)
      END;
      IF chptr^="," THEN
        chptr:=SYS.VAL(e.APTR,SYS.VAL(LONGINT,chptr)+1)
      ELSE
        EXIT
      END;
    END;
    g.LoadRGB4(SYS.ADR(Screen.viewPort),Cols,i);
  END;

(*------  Open Font:  ------*)

  IF FontName[0]#0X THEN
    MyAttr.name := SYS.ADR(FontName);
    MyAttr.ySize := FontSize;
    IF diskFontBase=NIL THEN diskFontBase := e.OpenLibrary("diskfont.library",33) END;
    IF diskFontBase#NIL THEN MyFont := OpenDiskFont(MyAttr) END;
    IF (MyFont#NIL) & ~(g.proportional IN MyFont.flags) THEN g.SetFont(rp,MyFont) END;
  END;

  LOOP
    fontWidth  := rp.font.xSize;
    fontHeight := rp.font.ySize;
    IF (fontWidth<=50) OR (fontHeight<=50) & (fontWidth>2) & (fontHeight>2) THEN EXIT END;
    MyAttr.name := SYS.ADR("topaz.font");
    MyAttr.ySize := 8;
    MyFont := g.OpenFont(MyAttr);
    IF MyFont=NIL THEN HALT(d.fail) END;
    g.SetFont(rp,MyFont);
  END;
  INC(fontHeight,spacing);               (* extra spacing *)
  fontBaseLine := rp.font.baseline;

  NumColumns := Screen.width DIV fontWidth;
  IF Scrollable THEN NumLines   := Screen.height DIV 2 DIV fontHeight;
                ELSE NumLines   := Screen.height DIV fontHeight; END;
  PageHeight := fontHeight*NumLines;

  NuScreen.height := fontHeight*NumLines;
  NuScreen.width  := Screen.width;

  ClearBitMaps;

  IF Scrollable THEN
    Screen.height := NuScreen.height;
    I.MakeScreen(Screen);
    I.RethinkDisplay;
  END;

(*------  Open Window:  ------*)

  NuWindow.flags  := LONGSET{I.rmbTrap,I.activate,I.borderless,I.noCareRefresh,I.simpleRefresh,I.backDrop};
  NuWindow.screen := Screen;
  NuWindow.type   := I.customScreen;
  NuWindow.topEdge:= 10;
  NuWindow.width  := Screen.width;
  NuWindow.height := Screen.height-10;
  NuWindow.idcmpFlags := MyIdcmp;
  Window := I.OpenWindow(NuWindow);
  IF Window=NIL THEN Request(LocStr(MSGCOW)^) END;

(*------  Get KeyMap:  ------*)

  IF e.OpenDevice("console.device",-1,conreq,LONGSET{})#0 THEN HALT(d.fail) END;
  console := conreq.device;
  con.base := console;
(*ievent.nextEvent := NIL;
  ievent.qualifier := {};
  ievent.eventAddress := NIL; *)
  ievent.class := ie.rawkey;

  FOR i := 0 TO 3FH DO
    ievent.code := i;
    SYS.SETREG(0,con.RawKeyConvert(ievent,KeyMap[i],16,NIL));
  END;

(*------  Decrunch:  ------*)

  Decrunch;

(*------  Init 2nd Task:  ------*)

  ShowTask.spLower := ShowStack;
  ShowTask.spUpper := SYS.VAL(e.APTR,SYS.VAL(LONGINT,ShowStack) + ShowStackSize);
  ShowTask.spReg   := ShowTask.spUpper;
  ShowTask.node.type := e.task;
  ShowTask.node.name := SYS.ADR("mm.show");
  ShowTask.node.pri  := Me.task.node.pri+1;
  (* $IF SmallData *)
  ShowTask.userData  := SYS.REG(13);           (* VarBase *)
  (* $END *)

  e.Forbid;
   e.AddTask(ShowTask,ShowProc,NIL);
   ShowTaskRunning := w;
   Window.userPort.sigTask := ShowTask;
  e.Permit;

(*------  Main Load / Display Loop:  ------*)

  LOOP
    fg := 1; bg := 0; oldfg := fg; oldbg := bg; style := SHORTSET{};
    RQLen := -1; RQPos := -1;
    AnzLines := 1;
    LastLine := FirstLine;
    BottomLine := FirstLine;
    TopLine    := FirstLine;
    TextLength := 0;
    FindLine   := NIL;
    FOR i := 0 TO 9 DO TextMarkers[i] := NIL END;

    MyLock := d.Lock(Name,d.sharedLock);
    IF MyLock=NIL THEN Request(LocStr(MSGCOF)^) END;
    IF ~ d.Examine(MyLock,FileInfo^) THEN Request(LocStr(MSGCOF)^) END;
    FileLength := FileInfo.size;

    d.UnLock(MyLock); MyLock := NIL;
    IF FileLength=0 THEN Request(LocStr(MSGEMPTY)^) END;

    (*------  Start displaying & Loading:  ------*)

    NewDisp := w;

    e.Signal(ShowTask,mySig);

    REPEAT
      LoadLine := GetTextLine();
      IF LoadLine=NIL THEN
        d.OldClose(MyFile); MyFile := NIL;
      ELSE
        LoadLine.prev := LastLine;
        LastLine.next := LoadLine;
        LastLine := LoadLine;
      END;
      IF SignalNewData THEN e.Signal(ShowTask,mySig) END;
    UNTIL (MyFile=NIL) OR Done OR NewText;
    IF SignalAllRead THEN e.Signal(ShowTask,mySig) END;
    REPEAT
      SYS.SETREG(0,e.Wait(mySig));
      IF print THEN
        in := d.Open("NIL:",d.oldFile); out := d.Open("NIL:",d.newFile);
        SYS.SETREG(0,d.Execute(PStr,in,out));
        d.OldClose(in); in := NIL; d.OldClose(out); out := NIL; print := f;
      END;
      IF save THEN
        in := d.Open(Name,d.oldFile);
        IF in=NIL THEN I.DisplayBeep(NIL) ELSE
          ol.New(buffer,savesize);
          SYS.SETREG(0,d.Seek(in,savefrom,0));
          IF d.Read(in,buffer^,savesize)#savesize THEN
            I.DisplayBeep(NIL);
            d.OldClose(in); in := NIL;
          ELSE
            d.OldClose(in); in := NIL;
            IF copy THEN
              iff := NIL;
              LOOP
                IF ip.base=NIL THEN EXIT END;
                iff := ip.AllocIFF();
                IF iff=NIL THEN EXIT END;
                iff.stream := SYS.VAL(LONGINT,ip.OpenClipboard(0));
                IF iff.stream=NIL THEN EXIT END;
                ip.InitIFFasClip (iff);
                IF (ip.OpenIFF  (iff, ip.write) = 0) &
                   (ip.PushChunk(iff, SYS.VAL(LONGINT,"FTXT"), ip.idFORM, ip.IFFSizeUnknown)=0) &
                   (ip.PushChunk(iff, 0, SYS.VAL(LONGINT,"CHRS"), ip.IFFSizeUnknown)=0) &
                   (ip.WriteChunkBytes(iff,buffer^,savesize) = savesize) &
                   (ip.PopChunk (iff)=0) &
                   (ip.PopChunk (iff)=0) THEN
                END;
                EXIT;
              END;
              IF iff#NIL THEN
                ip.CloseIFF(iff);
                IF iff.stream#0 THEN ip.CloseClipboard (SYS.VAL(e.APTR,iff.stream)) END;
                ip.FreeIFF (iff);
              END;
            ELSE
              out := d.Open(WriteName,d.newFile);
              IF out=NIL THEN I.DisplayBeep(NIL) ELSE
                IF d.Write(out,buffer^,savesize)#savesize THEN I.DisplayBeep(NIL) END;
                d.OldClose(out); out := NIL;
              END;
            END;
          END;
          DISPOSE(buffer);
        END;
        save := f;
      END;
      IF Done THEN EXIT END;
    UNTIL NewText;
    IF MyFile#NIL THEN d.OldClose(MyFile); MyFile := NIL END;
    IF Decrunched & d.DeleteFile(Name) THEN END;
    Decrunched := f;
    DisposeLines();
    FirstLine^.next := NIL; NewText := f;
    Name := OldName;
    REPEAT
      FileReq(Name);
      MyFile := d.Open(Name,d.oldFile);
    UNTIL MyFile#NIL;
    Decrunch;
  END;   (* LOOP *)

CLOSE

  IF win         #NIL THEN I.CloseWindow(win)               END;
  IF ShowTaskRunning  THEN e.RemTask(ShowTask)              END;
  IF console     #NIL THEN e.CloseDevice(conreq)            END;
  IF Window      #NIL THEN I.CloseWindow(Window)            END;
  IF Screen      #NIL THEN I.OldCloseScreen(Screen)         END;
  IF MyFont      #NIL THEN g.CloseFont(MyFont)              END;
  IF MyFile      #NIL THEN d.OldClose(MyFile)               END;
  IF in          #NIL THEN d.OldClose(in)                   END;
  IF out         #NIL THEN d.OldClose(out)                  END;
  IF Decrunched       THEN SYS.SETREG(0,d.DeleteFile(Name)) END;
  IF MyLock      #NIL THEN d.UnLock(MyLock)                 END;
  IF xpk         #NIL THEN e.CloseLibrary(xpk)              END;
  IF arp         #NIL THEN e.CloseLibrary(arp)              END;
  IF asl         #NIL THEN e.CloseLibrary(asl)              END;
  IF diskFontBase#NIL THEN e.CloseLibrary(diskFontBase)     END;
  IF iconBase    #NIL THEN e.CloseLibrary(iconBase)         END;
  IF rd          #NIL THEN d.FreeArgs(rd)                   END;
  IF mySigBit>=0      THEN e.FreeSignal(mySigBit)           END;
  IF catalog     #NIL THEN loc.CloseCatalog(catalog);       END;
  IF taskpri  #oldpri THEN oldpri := e.SetTaskPri(Me,oldpri)END;
  OldDir := d.CurrentDir(OldDir);

END MuchMore.