'*
'*  ANSIED v2.43a
'*---------------------------------------------------------------------------
'*  Full Screen Text Editor for RBBS-PC
'*  QuickBASIC v4.5 Version
'*  06-10-90
'*
'*  v2.1xx ... made it work with RBBS v17
'*  v2.2 ..... fixed some inconsistincies in the code as to # of lines in msg.
'*             Some of the code thought 99 was length, some thought 100.
'*  v2.3 ..... let it work with quoted reply.  No more REDIM of ZOutTxt$
'*  v2.4 ..... removed tabs, margins code to be smaller
'*  v2.41..... fixed bug with loss of bold attribute occasionally
'*  v2.42..... made it work as a v17.3 subroutine.  Added block delete.
'*  v2.43..... Added to: and from:.  Made cursor keys work locally.
'*  v2.43a.... Stupid little bugs fixed
'*
'*  Returns:
'*  ZSubParm  =  1 - Save Message
'*            =  2 - Abort Message
'*            = -1 - Dropped Carrier
'*            = -2 - Sleep Disconnect
'*
'*

DECLARE SUB Ansied (T$, S$, L%)
DECLARE SUB ClearScreen ()
DECLARE SUB UpdateStatusLine (How%)
DECLARE SUB MoveCursor (NewRow%, NewCol%)
DECLARE SUB UnString (WasL$, BadString$)
DECLARE SUB UpdateScreen ()
DECLARE SUB Getch (YY$)
DECLARE SUB SaveCursor (Row%, Col%)
DECLARE SUB DisplayMainMenu ()
DECLARE SUB ClearMainMenu ()
DECLARE SUB PutScreen (YY$, Colour%, Bold%)
DECLARE SUB ExecuteMainMenuCommand (CMD$)
DECLARE SUB DeleteCurrentLine (Index%)
DECLARE SUB BackspChar ()
DECLARE SUB CarrRetKey ()
DECLARE SUB NormalChar (YY$)
DECLARE SUB EraseToEOL (LineNumber%, ColNumber%)
DECLARE SUB FindWrap (YY$, WhereToWrap%)
DECLARE SUB Ungetch (X%)
DECLARE SUB DoneWithMsg ()
DECLARE SUB HelpMe ()
DECLARE SUB ReformText (Justify%)
DECLARE SUB LastParaLine (I%, LastLine%, Result%)
DECLARE SUB RightTrim (YY$)

' $INCLUDE: 'RBBS-VAR.MOD'

100   CONST ColorRset = 0
      CONST RedFore = 31
      CONST GreenFore = 32
      CONST YellowFore = 33
      CONST BlueFore = 34
      CONST MagentaFore = 35
      CONST CyanFore = 36
      CONST WhiteFore = 37
      CONST BlueBack = 44

110   CONST ESCKey = 27
      CONST BackspKey = 8
      CONST OtherBackspKey = 127
      CONST CarrRet = 13
      CONST ReformTextKey = 2    ' Ctrl-B
      CONST EndSessionKey = 11   ' Ctrl-K
      CONST HelpKey = 14         ' Ctrl-N
      CONST ReflowTextKey = 15   ' Ctrl-O
      CONST RepaintKey = 16      ' Ctrl-P
      CONST ToggleINSKey = 22    ' Ctrl-V
      CONST LineUpKey = 5        ' Ctrl-E
      CONST LineDownKey = 24     ' Ctrl-X
      CONST ColLeftKey = 19      ' Ctrl-S
      CONST ColRightKey = 4      ' Ctrl-D
      CONST WordLeftKey = 1      ' Ctrl-A
      CONST WordRightKey = 6     ' Ctrl-F
      CONST PageUpKey = 18       ' Ctrl-R
      CONST PageDownKey = 3      ' Ctrl-C
      CONST HomeKey = 23         ' Ctrl-W
      CONST EndKey = 26          ' Ctrl-Z
      CONST LineDeleteKey = 25   ' Ctrl-Y
      CONST CharDeleteKey = 7    ' Ctrl-G

      CONST BlankLine$ = ""
119   CONST Version$ = "v2.43a"

      DEFINT A-Z

120   COMMON SHARED /Ansied/ CurrentRow, CurrentCol, TopLine
      COMMON SHARED /Ansied/ OldColour, IsBold, InsertMode
      COMMON SHARED /Ansied/ SoftSpace$, InsOvwPosition
      COMMON SHARED /Ansied/ BlockDelActive, MsgLockLines
      COMMON SHARED /Ansied/ BlockLine1, BlockLine2
      COMMON SHARED /Ansied/ MsgTo$, MsgSubj$

'*  AnsiEd
'*----------------------------------------------------------------------------
'*  Main full-screen editor routine
'*
'*
      SUB Ansied (T$, S$, L%) STATIC

      '*
      '* ZworkAra$() holds what's currently on the user's screen.
      '* 24 Lines: ZWorkAra$(1) = Menu, Bottom Line = "Line 25"
      '*
500   REDIM ZWorkAra$(24)
      '*
      '* TopLine is the index into the ZOutTxt$() array that
      '* corresponds to the top of the displayed image, i.e.
      '* what's on line 2 of the user's screen.
      '*
      '*   1,12,23,34,45,56,78
      '*
      TopLine = 1
      SoftSpace$ = CHR$(250)
      InsertMode = ZTrue
      ZLineFeed$ = CHR$(10)
      OldColour = 0
      Bold = ZFalse
      IsBold = 99
      BlockDelActive = ZFalse
      CurrentCol = 0
      CurrentRow = 0

      MsgLockLines = L

      MsgTo$ = T$
      CALL NameCaps(MsgTo$)

      MsgSubj$ = S$
      ZOutTxt$ = ""
      IF LEFT$(MsgSubj$, 3) = "(R)" THEN
         ZOutTxt$ = "(R)"
         MsgSubj$ = MID$(MsgSubj$, 4)
      END IF
      CALL NameCaps(MsgSubj$)
      MsgSubj$ = ZOutTxt$ + MsgSubj$

      '*
      '* Initialize the screen array as all blanks
      '*
510   FOR I = 3 TO 24
         ZWorkAra$(I) = BlankLine$
      NEXT I

      '*
      '* Initialize the screen
      '*
      CALL ClearScreen
      CALL UpdateStatusLine(1)
      CALL MoveCursor(3, 1)
      '*
      '* Remove ANSI sequences from the quoted lines
      '*
      IF ZLinesInMsg > 88 THEN
         ZLinesInMsg = 88
      END IF
      IF ZMaxMsgLines > 98 THEN
         ZMaxMsgLines = 98
      END IF
      IF ZLinesInMsg > ZMaxMsgLines THEN
         ZLinesInMsg = ZMaxMsgLines
      END IF
      FOR I = ZLinesInMsg + 1 TO 99
         ZOutTxt$(I) = BlankLine$
      NEXT
      IF ZLinesInMsg <> 0 THEN
         FOR I = 1 TO ZLinesInMsg
            CALL UnString(ZOutTxt$(I), "[")
         NEXT
         I! = ZLinesInMsg / 11
         J = FIX(I!)
         IF J = I! THEN
           J = J - 1
         END IF
         TopLine = J * 11 + 1
         J = ZLinesInMsg - TopLine
         CALL MoveCursor(J + 5, 1)
      END IF
      CALL UpdateScreen

      '*
      '* Run the Editor
      '*
520   WHILE ZTrue

         CALL Carrier: GOSUB 740

         CALL Getch(B$): GOSUB 740
         KeyPressed = ASC(B$)

         Index = CurrentRow + TopLine - 3

         IF BlockDelActive OR Index <= MsgLockLines OR Index > ZMaxMsgLines THEN
530         SELECT CASE KeyPressed
               CASE CarrRet
                  IF BlockDelActive THEN
                     BlockDelActive = ZFalse
                     BlockLine2 = Index
                     IF Index < BlockLine1 THEN
                        BlockLine2 = BlockLine1
                        BlockLine1 = Index
                     END IF
                     IF BlockLine1 <= MsgLockLines THEN
                        BlockLine1 = MsgLockLines + 1
                     END IF
                     IF BlockLine2 > ZMaxMsgLines THEN
                        BlockLine2 = ZMaxMsgLines
                     END IF
                     K = 0
                     FOR I = BlockLine2 + 1 TO 99
                        ZOutTxt$(BlockLine1 + K) = ZOutTxt$(I)
                        K = K + 1
                     NEXT I
                     WHILE BlockLine1 + K <= 99
                        ZOutTxt$(BlockLine1 + K) = BlankLine$
                        K = K + 1
                     WEND
                     CALL UpdateScreen
                     CALL UpdateStatusLine(2)
                     CALL MoveCursor(RowSave, ColSave)
                  END IF
                  KeyPressed = 255

540            CASE ESCKey
                  IF BlockDelActive THEN
                     BlockDelActive = ZFalse
                     CALL SaveCursor(RowSave, ColSave)
                     CALL UpdateStatusLine(2)
                     CALL MoveCursor(RowSave, ColSave)
                     KeyPressed = 255
                  END IF

               CASE LineUpKey, LineDownKey, PageDownKey, PageUpKey
                  '*
                  '* Up and Down get passed on
                  '*
               CASE ELSE
                  '*
                  '* Ignore the key
                  '*
                  KeyPressed = 255

            END SELECT
         END IF

         '*
         '* Look for an ANSI escape sequence after an ESC
         '*
550      IF KeyPressed = ESCKey THEN
            CALL Getch(B$): GOSUB 740
            IF B$ = "[" THEN                    ' ANSI sequence
               CALL Getch(B$): GOSUB 740
               IF B$ = "C" THEN
                  KeyPressed = ColRightKey
               ELSEIF B$ = "D" THEN
                  KeyPressed = ColLeftKey
               ELSEIF B$ = "A" THEN
                  KeyPressed = LineUpKey
               ELSEIF B$ = "B" THEN
                  KeyPressed = LineDownKey
               END IF
            END IF
         END IF

560      SELECT CASE KeyPressed
            CASE ESCKey
               '*
               '* User wants to see main menu
               '*
               CALL SaveCursor(RowSave, ColSave)
               CALL DisplayMainMenu
               CALL MoveCursor(RowSave, ColSave)
               KeyPressed = 255: B$ = ""
               WHILE KeyPressed <> ESCKey
                  CALL Getch(B$): GOSUB 740
                  B$ = UCASE$(B$)
                  KeyPressed = ASC(B$)
                  IF KeyPressed = CarrRet THEN
                     B$ = "H"
                  END IF
                  I = INSTR("HJREIPB" + CHR$(ESCKey), B$)
                  IF I = 7 THEN
                     BlockDelActive = ZTrue
                     BlockLine1 = RowSave + TopLine - 3
                     CALL ClearMainMenu
                     CALL QuickTput(ZEmphasizeOff$, 0)
                     CALL PutScreen("Block Delete: Move cursor to last line to delete and press ENTER   ESC Quits", 99, ZFalse)
                     CALL MoveCursor(RowSave, ColSave)
                     BlockLine2 = 0
                     KeyPressed = ESCKey
                  ELSEIF I <> 0 THEN
                     CALL ExecuteMainMenuCommand(B$): GOSUB 740
                     KeyPressed = ESCKey
                  END IF
               WEND
               CALL MoveCursor(RowSave, ColSave)

570         CASE LineUpKey
               '*
               '* Move the current cursor position up one line
               '*
               IF CurrentRow > 3 THEN
                  CALL MoveCursor(CurrentRow - 1, CurrentCol)
               ELSE
                  IF TopLine <> 1 THEN
                     TopLine = TopLine - 11
                     CALL MoveCursor(CurrentRow + 10, CurrentCol)
                     CALL UpdateScreen
                  END IF
               END IF

580         CASE LineDownKey
               '*
               '* Move the current cursor position down one line
               '*
               IF CurrentRow < 24 THEN
                  CALL MoveCursor(CurrentRow + 1, CurrentCol)
               ELSE
                  IF NOT TopLine = 78 THEN
                     TopLine = TopLine + 11
                     CALL MoveCursor(CurrentRow - 10, CurrentCol)
                     CALL UpdateScreen
                  END IF
               END IF

590         CASE ColLeftKey
               '*
               '* Move the current cursor left one column
               '*
               IF CurrentCol > 1 THEN
                  CALL MoveCursor(CurrentRow, CurrentCol - 1)
               END IF

600         CASE ColRightKey
               '*
               '* Move the current cursor right one column
               '*
               IF CurrentCol < 79 THEN
                  CALL MoveCursor(CurrentRow, CurrentCol + 1)
               END IF

610         CASE WordRightKey
               '*
               '* Move the current cursor right one word
               '*
               FOR I = CurrentCol TO LEN(ZOutTxt$(Index)) - 1
                  YY$ = MID$(ZOutTxt$(Index), I, 1)
                  ZZ$ = MID$(ZOutTxt$(Index), I + 1, 1)
                  IF (YY$ = " " OR YY$ = SoftSpace$) AND ZZ$ <> " " AND ZZ$ <> SoftSpace$ THEN
                     NewCol = I + 1
                     IF NewCol > 79 THEN
                        NewCol = 79
                     END IF
                     CALL MoveCursor(CurrentRow, NewCol)
                     EXIT FOR
                  END IF
               NEXT I

620         CASE WordLeftKey
               '*
               '* Move the current cursor left one word
               '*
               Found = ZFalse
               FOR I = CurrentCol - 1 TO 2 STEP -1
                  ZZ$ = MID$(ZOutTxt$(Index), I, 1)
                  YY$ = MID$(ZOutTxt$(Index), I - 1, 1)
                  IF (YY$ = " " OR YY$ = SoftSpace$) AND ZZ$ <> " " AND ZZ$ <> SoftSpace$ THEN
                     NewCol = I
                     CALL MoveCursor(CurrentRow, NewCol)
                     Found = ZTrue
                     EXIT FOR
                  END IF
               NEXT I
               IF NOT Found THEN
                  CALL MoveCursor(CurrentRow, 1)
               END IF

630         CASE HomeKey
               '*
               '* Move cursor to the start of the line
               '*
               CALL MoveCursor(CurrentRow, 1)

640         CASE EndKey
               '*
               '* Move cursor to the end of the line
               '*
               IF ZOutTxt$(Index) = STRING$(79, 250) THEN
                  NewCol = 1
               ELSE
                  NewCol = 0
                  FOR I = LEN(ZOutTxt$(Index)) TO 1 STEP -1
                     IF MID$(ZOutTxt$(Index), I, 1) <> SoftSpace$ THEN
                        NewCol = I + 1
                        EXIT FOR
                     END IF
                  NEXT I
                  IF NewCol > 79 THEN
                     NewCol = 79
                  ELSEIF NewCol < 1 THEN
                     NewCol = 1
                  END IF
               END IF
               CALL MoveCursor(CurrentRow, NewCol)

650         CASE PageDownKey
               '*
               '* Move the display one page down
               '*
               TopLine = TopLine + 22
               IF TopLine > 78 THEN
                  TopLine = 78
               END IF
               CALL UpdateScreen

660         CASE PageUpKey
               '*
               '* Move the display one page up
               '*
               TopLine = TopLine - 22
               IF TopLine < 1 THEN
                  TopLine = 1
               END IF
               CALL UpdateScreen

670         CASE LineDeleteKey
               '*
               '* Delete the current line in the file
               '*
               CALL SaveCursor(RowSave, ColSave)
               CALL DeleteCurrentLine(Index)
               CALL MoveCursor(RowSave, ColSave)

680         CASE CharDeleteKey
               '*
               '* Delete the current character
               '*
               IF CurrentCol <= LEN(ZOutTxt$(Index)) THEN
                  CALL MoveCursor(CurrentRow, CurrentCol + 1)
                  CALL BackspChar
               END IF

690         CASE BackspKey, OtherBackspKey
               '*
               '* Back up one character and destroy it
               '*
               CALL BackspChar

700         CASE CarrRet
               '*
               '* Move to the next line, left column
               '*
               IF NOT Index >= ZMaxMsgLines THEN
                  CALL CarrRetKey
               END IF

710         CASE HelpKey, ReformTextKey, ReflowTextKey, EndSessionKey, ToggleINSKey, RepaintKey
               '*
               '* Execute a main menu command
               '*
               '*          1234567890123456789012
               YY$ = MID$(" J        E  HRP     I", KeyPressed, 1)
               CALL SaveCursor(RowSave, ColSave)
               CALL ExecuteMainMenuCommand(YY$): GOSUB 740
               CALL MoveCursor(RowSave, ColSave)

            CASE IS > 127, IS < 32
               '*
               '* Ignore characters above 127 or below 32
               '*
720         CASE ELSE
               '*
               '* Input was a normal character
               '*
               CALL NormalChar(B$)

         END SELECT
      WEND

730   REDIM ZWorkAra$(13)
      EXIT SUB

      '*
      '* Test ZSubParm and Exit ANSIED if the carrier dropped
      '*
740   IF ZSubParm <> 0 THEN
         GOTO 730
      END IF
      RETURN

      END SUB         ' Sub AnsiEd

'*  BackspChar()
'*----------------------------------------------------------------------------
'*  This routine handles the user entering the backspace key
'*
'*
      SUB BackspChar STATIC
1200  CALL SaveCursor(RowSave, ColSave)
      Index = TopLine + CurrentRow - 3
      IF Index = MsgLockLines + 1 AND CurrentCol = 1 THEN
         EXIT SUB
      END IF
      AtEndOfLine = CurrentCol > LEN(ZOutTxt$(Index))
1210  IF CurrentCol > 1 THEN
         ZOutTxt$(Index) = LEFT$(ZOutTxt$(Index), CurrentCol - 2) + MID$(ZOutTxt$(Index), CurrentCol)
         CALL EraseToEOL(CurrentRow, CurrentCol - 1)
         IF NOT AtEndOfLine THEN
            YY$ = MID$(ZOutTxt$(Index), ColSave - 1)
            CALL MoveCursor(RowSave, ColSave - 1)
            CALL PutScreen(YY$, YellowFore, ZTrue)
         END IF
         CALL MoveCursor(RowSave, ColSave - 1)
         ZWorkAra$(CurrentRow) = ZOutTxt$(Index)
      ELSEIF LEN(ZOutTxt$(Index - 1)) >= ZRightMargin THEN
         '*
         '* Do nothing
         '*
1220  ELSE
         NewCol = LEN(ZOutTxt$(Index - 1)) + 1
         YY$ = ZOutTxt$(Index)
         CALL UnString(YY$, SoftSpace$)
         ZOutTxt$(Index - 1) = ZOutTxt$(Index - 1) + YY$
         IF LEN(ZOutTxt$(Index - 1)) < ZRightMargin THEN
            CALL DeleteCurrentLine(Index)
1230     ELSE
            CALL FindWrap(LEFT$(ZOutTxt$(Index - 1), ZRightMargin + 1), I)
            IF I = 0 OR I = 1 THEN
               I = ZRightMargin
            END IF
            ZOutTxt$(Index) = MID$(ZOutTxt$(Index - 1), I + 1)
            ZOutTxt$(Index - 1) = LEFT$(ZOutTxt$(Index - 1), I)
         END IF
         IF RowSave > 3 THEN
            CALL MoveCursor(RowSave - 1, NewCol)
            CALL UpdateScreen
         ELSE
            CALL MoveCursor(RowSave, NewCol)
            CALL Ungetch(LineUpKey)
         END IF
      END IF
      END SUB

'*  CarrRetKey()
'*----------------------------------------------------------------------------
'*  This routine handles carriage returns entered in the file
'*
'*
      SUB CarrRetKey STATIC
1300  Index = CurrentRow + TopLine - 3
      IF Index >= 99 THEN
         EXIT SUB
      END IF
      IF InsertMode THEN         ' Insert a new line
         FOR I = 98 TO Index + 1 STEP -1
            ZOutTxt$(I + 1) = ZOutTxt$(I)
         NEXT I
         IF LEN(ZOutTxt$(Index)) >= CurrentCol THEN
            ZOutTxt$(Index + 1) = MID$(ZOutTxt$(Index), CurrentCol)
            ZOutTxt$(Index) = LEFT$(ZOutTxt$(Index), CurrentCol - 1)
         ELSE
            ZOutTxt$(Index + 1) = BlankLine$
         END IF
         CALL UpdateScreen
      END IF
      IF CurrentRow < 24 THEN
         CALL MoveCursor(CurrentRow + 1, 1)
      ELSE
         CALL MoveCursor(CurrentRow, 1)
         CALL Ungetch(LineDownKey)
      END IF
      END SUB

'*  ClearMainMenu()
'*----------------------------------------------------------------------------
'*  This routine clears the main menu from the top line
'*
'*
      SUB ClearMainMenu STATIC
1400  CALL EraseToEOL(1, 1)
      CALL MoveCursor(1, 1)
      END SUB

'*  ClearScreen()
'*----------------------------------------------------------------------------
'*  This routine clears the screen and moves the cursor to row 2, col 1
'*
'*
      SUB ClearScreen STATIC
1500  FOR I = 1 TO 23
         ZWorkAra$(I) = BlankLine$
      NEXT I
      CALL QuickTput("", 0)   ' clear screen, column 1, row 3
      ZSubParm = 2
      CALL Line25
      ZSubParm = 0
      CurrentCol = 1
      CurrentRow = 3
      IsBold = 99
      END SUB

'*  DeleteCurrentLine()
'*----------------------------------------------------------------------------
'*  This routine deletes the current line on the screen and in the array
'*  ZOutTxt$, and moves the next lower line up one  It then repaints the
'*  affected portion of the screen (from the deleted line down)
'*
'*
      SUB DeleteCurrentLine (Index%) STATIC
1600  FOR I = Index% TO 98
         ZOutTxt$(I) = ZOutTxt$(I + 1)
      NEXT I
      ZOutTxt$(99) = BlankLine$
      CALL UpdateScreen
      END SUB

'*  DisplayMainMenu()
'*----------------------------------------------------------------------------
'*  This routine displays the main menu on the top line
'*
'*
      SUB DisplayMainMenu STATIC
1700  CALL MoveCursor(1, 1)
      CALL QuickTput(ZEmphasizeOff$, 0)
      YY$ = " [H]elp  E)nd  R)eflow  J)ustify  I)ns/Ovw  P)aint  B)lock Delete   ESC Quits"
      YY$ = YY$ + SPACE$(79 - LEN(YY$))
      ZHiLiteOff = ZFalse
      CALL ColorPrompt(YY$)
      CALL PutScreen(YY$, 99, ZTrue)
      IsBold = 99
      END SUB

'*  DoneWithMsg()
'*----------------------------------------------------------------------------
'*  This routine is called to save or abort the message
'*
'*
      SUB DoneWithMsg STATIC
1800  CALL SaveCursor(RowSave, ColSave)
      CALL ClearMainMenu
      CALL QuickTput(ZEmphasizeOff$, 0)
      YY$ = "End Message: S)ave, A)bort, or [C]ontinue? "
      ZHiLiteOff = ZFalse
      CALL ColorPrompt(YY$)
      CALL PutScreen(YY$, 99, ZTrue)
      B$ = " "
      WHILE INSTR("SAC" + CHR$(ESCKey) + CHR$(CarrRet), B$) = 0
         CALL Getch(B$)
         IF ZSubParm <> 0 THEN
            EXIT SUB
         END IF
         B$ = UCASE$(B$)
      WEND
1810  SELECT CASE B$
         CASE "S"        ' Save Message
            CALL ClearScreen
            '*
            '* Remove trailing blank lines from the message
            '*
            EndOfMsg = ZMaxMsgLines
            FOR I = ZMaxMsgLines TO 1 STEP -1
               IF ZOutTxt$(I) <> BlankLine$ THEN
                  EndOfMsg = I
                  EXIT FOR
               END IF
            NEXT I
            IF I = 0 THEN
               EndOfMsg = 1
            END IF
            FOR I = 1 TO EndOfMsg
               J = INSTR(ZOutTxt$(I), SoftSpace$)
               WHILE J <> 0
                  MID$(ZOutTxt$(I), J, 1) = " "
                  J = INSTR(ZOutTxt$(I), SoftSpace$)
               WEND
            NEXT I
            FOR I = EndOfMsg TO 1 STEP -1
               ZOutTxt$ = RTRIM$(ZOutTxt$)
               IF ZOutTxt$(I) <> BlankLine$ THEN
                  EndOfMsg = I
                  EXIT FOR
               END IF
            NEXT I
            ZLinesInMsg = EndOfMsg
            CALL QuickTput(ZEmphasizeOff$, 0)
            ZSubParm = 1

1820     CASE "A"
            CALL ClearMainMenu
            CALL QuickTput(ZEmphasizeOff$, 0)
            YY$ = "Abort: Are You Sure (Y)es,[N]o)? "
            ZHiLiteOff = ZFalse
            CALL ColorPrompt(YY$)
            CALL PutScreen(YY$, 99, ZTrue)
            CALL Getch(B$)
            IF ZSubParm <> 0 THEN
               B$ = "Y"
            END IF
            IF UCASE$(B$) = "Y" THEN
               CALL ClearScreen
               CALL QuickTput(ZEmphasizeOff$, 0)
               ZSubParm = 2
            END IF
      END SELECT
      END SUB

'*  EraseToEOL()
'*----------------------------------------------------------------------------
'*  This routine clears from a position to to the end of that line
'*
'*
      SUB EraseToEOL (LineNumber, ColNumber) STATIC
1900  CALL SaveCursor(RowSave, ColSave)
      CALL MoveCursor(LineNumber, ColNumber)
      CALL QuickTput("", 0)
      CALL MoveCursor(RowSave, ColSave)
      END SUB

'*  ExecuteMainMenuCommand()
'*----------------------------------------------------------------------------
'* This routine executes the passed main menu command
'*
'*
      SUB ExecuteMainMenuCommand (CMD$) STATIC
2000  ZSubParm = 0
      SELECT CASE CMD$
         CASE "H"
            CALL HelpMe
         CASE "E"
            CALL DoneWithMsg
         CASE "P"
            CALL ClearScreen
            CALL UpdateScreen
         CASE "I"
            InsertMode = NOT InsertMode
         CASE "R"
            CALL ReformText(ZFalse)
         CASE "J"
            CALL ReformText(ZTrue)
      END SELECT
      IsBold = 99
      IF ZSubParm = 0 THEN
         CALL ClearMainMenu
         CALL UpdateStatusLine(1)
      END IF
      END SUB

'*  FindWrap()
'*----------------------------------------------------------------------------
'*  This routine finds a place in the string yy$ that could be used as a
'*  place to wrap the line WhereToWrap should be the last position that
'*  remains in the line, ie
'*    set   currentline$ = left$(yy$,wheretowrap)
'*          nextline$    = mid$ (yy$,wheretowrap+1)
'*
'*
      SUB FindWrap (YY$, WhereToWrap) STATIC
2100  I = LEN(YY$)
      XX$ = " " + SoftSpace$
      '*
      '* Back over "False hits"
      '*
      ZZ$ = MID$(YY$, I, 1)
      WHILE INSTR(XX$, ZZ$) <> 0 AND I <> 1
         I = I - 1
         ZZ$ = MID$(YY$, I, 1)
      WEND
      WHILE INSTR(XX$, ZZ$) = 0 AND I <> 1
         I = I - 1
         ZZ$ = MID$(YY$, I, 1)
      WEND
      WhereToWrap = I
      END SUB

'*  Getch()
'*----------------------------------------------------------------------------
'*  This routine reads a character from the user into YY$
'*
'*
      SUB Getch (YY$) STATIC
2200  ZAutoLogoff! = TIMER + ZWaitBeforeDisconnect
      CALL Carrier
      YY$ = ""
      WHILE ZSubParm <> -1 AND ZSubParm <> -2 AND YY$ = ""
         ZSubParm = 0
         IF LEN(ZCommportStack$) > 0 THEN
            YY$ = LEFT$(ZCommportStack$, 1)
            ZCommportStack$ = MID$(ZCommportStack$, 2)
         ELSE
            IF ZLocalUser THEN
               YY$ = INKEY$
               IF LEN(YY$) = 2 THEN
                  KeyPressed = ASC(RIGHT$(YY$, 1))
                  YY$ = ""
                  SELECT CASE KeyPressed
                     CASE 82                  ' Insert
                        YY$ = CHR$(ToggleINSKey)
                     CASE 83                  ' Delete
                        YY$ = CHR$(CharDeleteKey)
                     CASE 71                  ' Home
                        YY$ = CHR$(HomeKey)
                     CASE 73                  ' PgUp
                        YY$ = CHR$(PageUpKey)
                     CASE 72                  ' Up Arrow
                        YY$ = CHR$(LineUpKey)
                     CASE 80                  ' Down Arrow
                        YY$ = CHR$(LineDownKey)
                     CASE 81                  ' PgDn
                        YY$ = CHR$(PageDownKey)
                     CASE 75                  ' Left Arrow
                        YY$ = CHR$(ColLeftKey)
                     CASE 77                  ' Right Arrow
                        YY$ = CHR$(ColRightKey)
                     CASE 115                 ' Ctrl-Left Arrow
                        YY$ = CHR$(WordLeftKey)
                     CASE 116                 ' Ctrl-Right Arrow
                        YY$ = CHR$(WordRightKey)
                     CASE 79                  ' End
                        YY$ = CHR$(EndKey)
                  END SELECT
               END IF
            ELSE
               CALL FindFKey
               IF ZSubParm >= 0 THEN
                  YY$ = ZKeyPressed$
                  IF YY$ = "" THEN
                     CALL EofComm(Char%)
                     IF Char% = -1 THEN
                        CALL CheckTime(ZAutoLogoff!, Remain!, 1)
                        IF Remain! < 0 THEN
                           CALL UpdtCalr("Sleep disconnect", 1)
                           ZSubParm = -2
                           ZNo = ZTrue
                           ZSleepDisconnect = ZTrue
                        END IF
                     ELSE
                        CALL Carrier
                        IF ZSubParm <> -1 THEN
                           ZSubParm = 0
                           CALL GetCom(YY$)
                        END IF
                     END IF
                  END IF
               END IF
            END IF
         END IF
      WEND
      END SUB

'*  HelpMe()
'*----------------------------------------------------------------------------
'*  This routine provides on-line help for the user
'*
'*
      SUB HelpMe STATIC
2300  CALL SaveCursor(RowSave, ColSave)
      CALL ClearScreen
      CALL QuickTput(ZEmphasizeOff$, 0)
      CALL BufFile(ZHelpPath$ + "ANSIED" + ZHelpExtension$, X)
      OldColour = 0
      IsBold = 99
      CALL ClearScreen
      FOR I = 3 TO 24
         ZWorkAra$(I) = BlankLine$
      NEXT I
      CALL UpdateScreen
      CALL MoveCursor(ColSave, RowSave)
      END SUB

'*  LastParaLine()
'*----------------------------------------------------------------------------
'*  This routine returns ZTrue if ZOutTxt$(I) is the last line
'*  in a paragraph
'*
'*
      SUB LastParaLine (I, LastLine, Result) STATIC
2400  Result = ZFalse
      IF I = LastLine OR I >= ZMaxMsgLines THEN
         Result = ZTrue
      ELSE
         YY$ = ZOutTxt$(I)
         J = INSTR(YY$, ">")
         IF J = 0 THEN
            J = 6
         END IF
         IF J < 5 THEN
            Result = ZTrue
         ELSEIF YY$ = BlankLine$ THEN
            Result = ZTrue
         ELSE
            IF ZOutTxt$(I + 1) = BlankLine$ THEN
               Result = ZTrue
            ELSEIF LEFT$(ZOutTxt$(I + 1), 1) = " " THEN
               Result = ZTrue
            ELSE
               K = INSTR(ZOutTxt$(I + 1), ">")
               IF K <> 0 AND K < 5 THEN
                  Result = ZTrue
               END IF
            END IF
         END IF
      END IF
      END SUB

'*  MoveCursor()
'*----------------------------------------------------------------------------
'*  This routine moves the cursor to the position spec'd by newcol and
'*  newrow and tries to do it with the minimum number of Ansi characters
'*
'*
      SUB MoveCursor (NewRow, NewCol) STATIC
2500  IF CurrentRow = NewRow AND CurrentCol = NewCol THEN
         EXIT SUB
      ELSEIF NewCol = 0 AND NewRow = 0 THEN
         EXIT SUB
      ELSEIF NewCol = 1 AND NewRow = 1 THEN
         YY$ = ""
      ELSEIF NewCol <> CurrentCol AND NewRow <> CurrentRow THEN
         YY$ = "[" + MID$(STR$(NewRow), 2) + ";" + MID$(STR$(NewCol), 2) + "f"
      ELSE
         IF CurrentCol = NewCol THEN           ' Just the row has changed
            I = CurrentRow - NewRow
            C$ = "A"   ' A=Up, B=Down
         ELSE                                   ' Just the column changed
            I = NewCol - CurrentCol
            C$ = "C"   ' C=Left, D=Right
         END IF
         '*
         '* Adjust the direction of the cursor
         '*
         IF I < 0 THEN
            I = -I
            C$ = CHR$(ASC(C$) + 1)
         END IF
         YY$ = "["
         IF I > 1 THEN
            YY$ = YY$ + MID$(STR$(I), 2)
         END IF
         YY$ = YY$ + C$
      END IF
      CALL QuickTput(YY$, 0)
      ZSubParm = 0
      CurrentRow = NewRow
      CurrentCol = NewCol
      END SUB

'*  NormalChar()
'*----------------------------------------------------------------------------
'*  This routine handles 'normal' characters entered into the message
'*
'*
      SUB NormalChar (YY$) STATIC

2600  CALL SaveCursor(RowSave, ColSave)
      Index = CurrentRow + TopLine - 3
      CurrentLineBlank = (ZOutTxt$(Index) = BlankLine$)
      LML = LEN(ZOutTxt$(Index))

      IF CurrentCol > 79 THEN
         EXIT SUB
      END IF

      AtEndOfLine = ZFalse

      IF CurrentCol > LML THEN
         ZOutTxt$(Index) = ZOutTxt$(Index) + SPACE$(CurrentCol - LML)
         ZWorkAra$(CurrentRow) = ZWorkAra$(CurrentRow) + SPACE$(CurrentCol - LML)
         LML = LEN(ZOutTxt$(Index))
         AtEndOfLine = ZTrue
      END IF

2610  IF (CurrentCol <= ZRightMargin AND AtEndOfLine) OR (CurrentCol <= ZRightMargin AND NOT InsertMode) THEN
         '*
         '* Single character changed
         '*
         MID$(ZOutTxt$(Index), CurrentCol, 1) = YY$
         MID$(ZWorkAra$(CurrentRow), CurrentCol, 1) = YY$
         CALL PutScreen(YY$, YellowFore, ZTrue)

2620  ELSEIF (NOT AtEndOfLine AND InsertMode AND CurrentCol <= ZRightMargin AND LML <= ZRightMargin) THEN
         '*
         '* Have to rewrite the screen from the current pos forward
         '*
         ZOutTxt$(Index) = LEFT$(ZOutTxt$(Index), CurrentCol - 1) + YY$ + MID$(ZOutTxt$(Index), CurrentCol)

         ZWorkAra$(CurrentRow) = ZOutTxt$(Index)

         CALL EraseToEOL(CurrentRow, CurrentCol)
         ZZ$ = MID$(ZWorkAra$(CurrentRow), CurrentCol)
         CALL PutScreen(ZZ$, YellowFore, ZTrue)
         CALL MoveCursor(RowSave, ColSave + 1)

2630  ELSE
         '*
         '* Wrap the end of the line
         '*
         IF NOT AtEndOfLine THEN
            ZOutTxt$(Index) = LEFT$(ZOutTxt$(Index), CurrentCol - 1) + YY$ + MID$(ZOutTxt$(Index), CurrentCol)
            LML = LML + 1
         ELSE
            MID$(ZOutTxt$(Index), CurrentCol, 1) = YY$
         END IF

         CALL FindWrap(ZOutTxt$(Index), I)
         IF I = 0 OR I = 1 THEN
            I = ZRightMargin
         END IF

         ZZ$ = MID$(ZOutTxt$(Index), (I + 1))
         CALL RightTrim(ZZ$)
         ZOutTxt$(Index) = LEFT$(ZOutTxt$(Index), I)
         ' add to the beginning of a new line
         IF Index <= 98 THEN
            Index = Index + 1
         END IF
         FOR J = 98 TO Index STEP -1
            ZOutTxt$(J + 1) = ZOutTxt$(J)
         NEXT J
         ZOutTxt$(Index) = ZZ$

         CALL EraseToEOL(CurrentRow, I + 1)        ' do the "easy" line
         ZWorkAra$(CurrentRow) = ZOutTxt$(Index)

         CALL UpdateScreen
         IF (ColSave > I) THEN
            NewCol = ColSave - I + 1
            IF RowSave <> 24 THEN
               CALL MoveCursor(RowSave + 1, NewCol)
            ELSE
               CALL MoveCursor(RowSave, NewCol)
               CALL Ungetch(LineDownKey)
            END IF
         ELSE
            CALL MoveCursor(RowSave, ColSave + 1)
         END IF
      END IF

      END SUB

'*  PutScreen()
'*----------------------------------------------------------------------------
'* This routine writes YY$ to the user in the color and
'* intensity specified
'*
'*
      SUB PutScreen (YY$, Colour, Bold) STATIC
2800  ZZ$ = ""
      IF Colour <> 99 THEN
         IF (Colour <> OldColour) OR (Bold <> IsBold) THEN
            ZZ$ = "["
            IF Bold <> IsBold THEN
               IF Bold THEN
                  ZZ$ = ZZ$ + "1;"
                  IsBold = ZTrue
               ELSE
                  ZZ$ = ZZ$ + "0;"
                  IsBold = ZFalse
               END IF
            END IF
            ZZ$ = ZZ$ + MID$(STR$(Colour), 2)
            ZZ$ = ZZ$ + "m"
         END IF
      END IF
      ZOutTxt$ = ZZ$ + YY$
      IF ZLocalUser THEN
         CALL QuickTput(ZOutTxt$, 0)
      ELSE
         ZSubParm = 4
         CALL Tput
         ZSubParm = 0
      END IF
      IF INSTR(YY$, "[") = 0 THEN
         CurrentCol = CurrentCol + LEN(YY$)
         IF CurrentCol > 80 THEN
            CurrentCol = 0
            CurrentRow = 0
         END IF
      ELSE
         CurrentRow = 0
         CurrentCol = 0
      END IF
      OldColour = Colour
      Colour = 99
      END SUB

'*  ReformText()
'*----------------------------------------------------------------------------
'*  This routine reflows the text to the current margins.  Optionally,
'*  it right justifies all lines by adding "soft spaces"
'*
'*
      SUB ReformText (Justify%) STATIC

2900  DIM SpacePlace(80)

      CALL ClearMainMenu
      CALL PutScreen("Reformatting... Please Wait.", WhiteFore, ZTrue)

      LastLine = 1
      FOR I = ZMaxMsgLines TO 1 STEP -1
         IF ZOutTxt$(I) <> BlankLine$ THEN
            LastLine = I
            EXIT FOR
         END IF
      NEXT

      I = MsgLockLines + 1   ' Read index
      J = MsgLockLines + 1   ' Write index

      '*
      '* Reflow the text to the maximum on a line
      '*
      DO WHILE I <= LastLine
         ZOutTxt$ = ""
         DO WHILE 1
            YY$ = ZOutTxt$(I)
            CALL UnString(YY$, SoftSpace$)
            IF ZOutTxt$ <> "" AND RIGHT$(ZOutTxt$, 1) <> " " THEN
               ZOutTxt$ = ZOutTxt$ + " "
            END IF
            ZOutTxt$ = ZOutTxt$ + YY$
            CALL LastParaLine(I, LastLine, Z)
            IF LEN(ZOutTxt$) > ZRightMargin OR Z THEN
               IF LEN(ZOutTxt$) > ZRightMargin THEN
                  CALL FindWrap(LEFT$(ZOutTxt$, ZRightMargin + 1), K)
                  IF K = 0 OR K = 1 THEN K = ZRightMargin
                  ZOutTxt$(J) = LEFT$(ZOutTxt$, K)
                  IF Z THEN
                     ' Go to the next paragraph
                     ZOutTxt$(J + 1) = MID$(ZOutTxt$, K + 1)
                     J = J + 2
                     I = I + 1
                     EXIT DO
                  ELSE
                     ZOutTxt$(I) = MID$(ZOutTxt$, K + 1)
                     J = J + 1
                     EXIT DO
                  END IF
               ELSE          ' Z is ZTrue
                  ZOutTxt$(J) = ZOutTxt$
                  J = J + 1
                  I = I + 1
                  EXIT DO
               END IF
            ELSE
               I = I + 1
            END IF
         LOOP
      LOOP

      FOR I = J TO 99
         ZOutTxt$(I) = BlankLine$
      NEXT

      LastLine = J - 1

      '*
      '* Space out the text on each line
      '*
      IF Justify% THEN
         FOR I = MsgLockLines + 1 TO LastLine
            CALL LastParaLine(I, LastLine, Z)
            IF Z THEN
            ELSE
               ZOutTxt$ = ZOutTxt$(I)
               ZOutTxt$ = RTRIM$(ZOutTxt$)
               '*
               '* Skip leading spaces on the line
               '*
               J = -1
               FOR K = 1 TO LEN(ZOutTxt$)
                  IF MID$(ZOutTxt$, K, 1) <> " " THEN
                     J = K
                     EXIT FOR
                  END IF
               NEXT
               IF J <> -1 THEN
                  '*
                  '* Find out all of the possible places to put spaces
                  '*
                  L = 0
                  M = INSTR(J, ZOutTxt$, " ")
                  WHILE M <> 0
                     L = L + 1
                     SpacePlace(L) = M
                     M = INSTR(M + 1, ZOutTxt$, " ")
                  WEND
                  IF L <> 0 THEN
                     '*
                     '* Space out the line.  First add a space to the
                     '* start of the line, then add to the end.
                     '*
                     SpacesToAdd = ZRightMargin - LEN(ZOutTxt$)
                     M = 1
                     N = L
                     DoM = ZTrue
                     WHILE SpacesToAdd <> 0
                        IF DoM THEN
                           Place = SpacePlace(M)
                           M = M + 1
                        ELSE
                           Place = SpacePlace(N)
                           N = N - 1
                        END IF
                        DoM = NOT DoM
                        ZOutTxt$(I) = LEFT$(ZOutTxt$(I), Place) + SoftSpace$ + MID$(ZOutTxt$(I), Place + 1)
                        SpacesToAdd = SpacesToAdd - 1
                        FOR P = 1 TO L
                           IF SpacePlace(P) > Place THEN
                              SpacePlace(P) = SpacePlace(P) + 1
                           END IF
                        NEXT
                        IF M = N THEN
                           M = 1
                           N = L
                        END IF
                     WEND
                  END IF
               END IF
            END IF
         NEXT
      END IF

      CALL UpdateScreen

      END SUB

'*  RightTrim()
'*----------------------------------------------------------------------------
'*   Removes soft spaces from a string
'*
'*
      SUB RightTrim (YY$) STATIC
3000  FOR I = LEN(YY$) TO 1 STEP -1
         IF MID$(YY$, I, 1) <> SoftSpace$ THEN
            YY$ = LEFT$(YY$, I)
            EXIT SUB
         END IF
      NEXT I
      YY$ = ""
      END SUB

'*  SaveCursor()
'*----------------------------------------------------------------------------
'*  This routine saves the current cursor position
'*
'*
      SUB SaveCursor (Row%, Col%) STATIC
      Row% = CurrentRow
      Col% = CurrentCol
      END SUB

'*  UnGetch()
'*----------------------------------------------------------------------------
'*   Puts a key in the beginning of the keyboard buffer
'*
'*
      SUB Ungetch (X) STATIC
      ZCommportStack$ = CHR$(X) + ZCommportStack$
      END SUB

'*  UnString()
'*----------------------------------------------------------------------------
'*  Removes one string from another
'*
'*
      SUB UnString (WasL$, BadString$) STATIC
      WasI = INSTR(WasL$, BadString$)
      WHILE WasI <> 0
         WasL$ = LEFT$(WasL$, WasI - 1) + MID$(WasL$, WasI + LEN(BadString$))
         WasI = INSTR(WasL$, BadString$)
      WEND
      END SUB

'*  UpdateScreen()
'*----------------------------------------------------------------------------
'*  This is one of the most important routines  It compares the arrays
'*  ZOutTxt$ and ZWorkAra$ and only sends the user the DIFFERENCE between the
'*  two within the viewing area  In this way all processing can be done on
'*  ZOutTxt$ and then the screen is updated to reflect the changes. After the
'*  users screen is updated, ZWorkAra$ is changed to reflect what should be
'*  on the users' screen The cursor is restored to its original position
'*
'*
      SUB UpdateScreen STATIC
3100  CALL SaveCursor(RowSave, ColSave)
      FOR I = 3 TO 24
         Index = I + TopLine - 3
         ScreenLine$ = ZWorkAra$(I)
         MessageLine$ = ZOutTxt$(Index)
         LML = LEN(MessageLine$)
         IF Index = ZMaxMsgLines + 1 THEN
            CALL EraseToEOL(I, 1)
            CALL MoveCursor(I, 1)
            CALL PutScreen("[* End of Message *]", CyanFore, ZFalse)
            ZWorkAra$(I) = CHR$(EndKey)
         ELSEIF Index > ZMaxMsgLines + 1 THEN
            IF ScreenLine$ <> BlankLine$ THEN
               CALL EraseToEOL(I, 1)
               ZWorkAra$(I) = BlankLine$
            END IF
         ELSEIF MessageLine$ = ScreenLine$ THEN
            '*
            '* Screen = What's in message buffer
            '*
         ELSEIF MessageLine$ = BlankLine$ OR MessageLine$ = SPACE$(LML) THEN
            CALL EraseToEOL(I, 1)
            ZWorkAra$(I) = MessageLine$
         ELSE
            CALL MoveCursor(I, 1)
            YY$ = MessageLine$
            CALL PutScreen(YY$, YellowFore, ZTrue)
            CALL EraseToEOL(CurrentRow, CurrentCol)
            ZWorkAra$(I) = ZOutTxt$(Index)
         END IF
      NEXT I
      CALL MoveCursor(RowSave, ColSave)
      END SUB

'*  UpdateStatusLine()
'*-----------------------------------------------------------------------------
'*  Rewrites the status line on screen line(s) 1 and 2
'*
'*    Input:  How% = 1   - Rewrite both lines
'*            How% = 2   - Just rewrite top line
'*
      SUB UpdateStatusLine (How%) STATIC
3200  YY$ = "ANSIED " + Version$ + " by Tom Collins                       * Press ESC Twice for Menu *"
      YY$ = YY$ + SPACE$(79 - LEN(YY$))
      CALL MoveCursor(1, 1)
      CALL PutScreen(YY$, BlueFore, ZTrue)
3210  IF How% = 1 THEN
         YY$ = CHR$(205) + " To: " + MsgTo$ + " " + STRING$(3, CHR$(205)) + " Subject: " + MsgSubj$ + " " + STRING$(3, CHR$(205))
         InsOvwPosition = LEN(YY$)
         IF InsertMode THEN
            YY$ = YY$ + " Insert " + STRING$(3, CHR$(205))
         ELSE
            YY$ = YY$ + " Overwrite "
         END IF
         YY$ = YY$ + STRING$(79 - LEN(YY$), CHR$(205))
         I = 1
         CALL MoveCursor(2, I)
         CALL PutScreen(YY$, WhiteFore, ZFalse)
      END IF
      END SUB