'===========================================================================
' Subject: COMMAND BASED FILE EDITOR         Date: 07-13-99 (01:37)       
' Author:  Kevin Everingham                  Code: QB, QBasic, PDS        
' Origin:  fortunecity.com/skyscraper/quan Packet: TEXT.ABC
'===========================================================================
'$DYNAMIC
DEFINT A-Z
DECLARE SUB clrit ()
DECLARE SUB Editor (Text$, LeftCol, RightCol, KeyCode, LN)
'       ÉÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ»
'       º     QuickBASIC   D O S    F I L E    E D I T O R     º Û
'       º   Version 1 by Kevin Everingham (c)1998   Additional º Û
'       º   Program features:                                  º Û
'       º                                                      º Û
'       º                                                      º Û
'       ÈÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍͼ Û
'          ßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßß
DECLARE SUB layout ()
begin:
COLOR 0, 0: CLS : COLOR 7
editit:
    VIEW PRINT: COLOR 12, 0: CLS      '<-------sec below outside print range
      LOCATE 1, 1: PRINT TAB(17); "DOS  FILE EDITOR by"; : COLOR 15: PRINT " Kevin Everingham"; : COLOR 9: PRINT TAB(65); "Editor"; STRING$(23, 32): COLOR 7
LOCATE 3, 1: COLOR 15, 0: SHELL "DIR *.*/W/O-D/P"   'LIST ALL FILES
COLOR 9, 0
LeftCol = 1                                   ' Set left column for editing
RightCol = 80                                 ' right column
LOCATE 23, 1
  COLOR 1, 0: PRINT STRING$(80, 219); : PRINT STRING$(80, 219); : LOCATE 23, 1
  COLOR 3, 1: PRINT TAB(61); "<File Editor>"
    LOCATE 24: COLOR 1: PRINT STRING$(80, 219); : PRINT STRING$(80, 219);
      LOCATE 25, 1: COLOR 14: PRINT " ^^^^^^^^^^^^^^^^\ Name & Extension /^^^^^^^ ";
      LOCATE 25: PRINT TAB(50); "(? =Help)"; TAB(62); "(Exit=Quit)";
      LOCATE 24, 3: COLOR 3: PRINT " File to Edit: "; : COLOR 15: INPUT file$
      COLOR 1, 0: LOCATE 1, 1: PRINT STRING$(80, 219); : PRINT STRING$(80, 219);
    LOCATE 1, 1: COLOR 15, 1: PRINT TAB(17); "DOS  FILE EDITOR by Kevin Everingham"; : COLOR 9: PRINT TAB(65); "Editor"; STRING$(23, 32): COLOR 7
  COLOR 0: LOCATE 22: file$ = RTRIM$(file$): file$ = LTRIM$(file$)
    VIEW PRINT 3 TO 23
    file$ = UCASE$(file$)                      ' trim spaces and capitalize.
    IF file$ = "?" THEN COLOR 15, 0: CLS : LOCATE 10, 20: PRINT "Help Available once you Enter a File Name": SLEEP 6: GOTO begin
    IF file$ = "EXIT" THEN CLOSE : CLS : END
    IF file$ = "END" THEN CLOSE : CLS : END
tester$ = RIGHT$(file$, 4)
IF LEFT$(tester$, 1) <> "." THEN file$ = file$ + ".HTM": tester$ = "": COLOR 0
ed2:
    IF file$ = "" THEN GOTO editit
    ON ERROR GOTO err1
    CLOSE
    OPEN "I", 1, file$
    ON ERROR GOTO err1
    REDIM Seeks&(1 TO 16384)                  ' Max number of lines if 16384
    CurSeek& = 1
    NumLines = 0
    DO UNTIL EOF(1)
        LINE INPUT #1, Text$
        NumLines = NumLines + 1
        Seeks&(NumLines) = CurSeek&             ' Save starting position
        CurSeek& = CurSeek& + LEN(Text$) + 2    '  Next position - 2 is
    LOOP                                        '      for C/R & LF
    CurCol = 1                                  '     Current Column
    SeekEl = 1                                  '      Current line
    Escape = false
       VIEW PRINT     ' <----3 lines here to show file info your viewing.
       COLOR 9, 1: LOCATE 24, 35: PRINT "Total Lines ="; NumLines; " in File: "; file$
       VIEW PRINT 3 TO 23
    DO
        GOSUB LoadAndDisplay2
        GOSUB KeyProcess2
    LOOP UNTIL Escape
    CLOSE
    GOTO begin
ed:
       ' 3 lines below tell user what line they are on and how many lines.
       VIEW PRINT
       Editor Text$, LeftCol, RightCol, KeyCode, LN
       linecount = 0
CLOSE
ON ERROR GOTO err1
OPEN file$ FOR INPUT AS #1                      '-----open user input file
OPEN "temp.dat" FOR OUTPUT AS #2                '-----open temp file
        DO UNTIL linecount = NumLines           '-----check for end of file.
                linecount = linecount + 1
                LINE INPUT #1, Text2$
                IF Pickline$ <> "yes" AND linecount = SeekEl + 20 THEN Text2$ = Text$
                IF Pickline$ = "yes" AND linecount = LN THEN Text2$ = Text$: LN = 0
        PRINT #2, Text2$                        '-----enter Text2$ into file.
        LOOP
Pickline$ = "no"
CLOSE #1
CLOSE                              '-----close all open files.
SHELL "copy temp.dat " + file$     '-----copy temp file to specified name.
GOTO ed2
LoadAndDisplay2:
    SEEK #1, Seeks&(SeekEl)
    FOR i = 3 TO 23
         IF NOT EOF(1) THEN LINE INPUT #1, Text$ ELSE Text$ = ""
         Strg$ = SPACE$(74)
         IF LEN(Text$) < CurCol THEN Text$ = Text$ + SPACE$(CurCol - LEN(Text$))
         LSET Strg$ = MID$(Text$, CurCol)
         linum = (i + SeekEl) - 3  '<---calculate line num to display
        LOCATE i, 1, 0: COLOR 9, 0: PRINT USING " ###±"; linum; : COLOR 0, 7: PRINT Strg$; : COLOR 9, 0: PRINT "±"; : COLOR 0, 7
        IF linum > NumLines THEN LOCATE i, 1, 0: COLOR 8, 0: PRINT USING " ###ß"; linum; : COLOR 0, 7
        IF i = 23 AND linum < NumLines + 1 THEN LOCATE i, 1, 0: COLOR 9, 0: PRINT "Home";
    NEXT i
RETURN
KeyProcess2:
    A$ = INKEY$: IF A$ = "" THEN GOTO KeyProcess2
    IF A$ = "+" THEN GOTO addlinein        ' (+) add specified line #
    IF A$ = "-" THEN GOTO removeline       ' (-) remove specified line #
    IF A$ = "_" THEN GOTO removeline       '     same as above
    IF A$ = "?" THEN CALL layout: CLOSE : GOTO ed2
    IF A$ = "/" THEN CALL layout: CLOSE : GOTO ed2
    SELECT CASE A$
        CASE CHR$(27)
            Escape = true                  ' ESC
            GOTO begin
        CASE CHR$(8)                       ' Backspace Key
            CALL layout
        CASE CHR$(9)                       ' Tab
            CALL clrit                     ' Edit by line number
            Pickline$ = "yes"
redoit:          
            LOCATE 13, 26: PRINT "Enter Line Number to Edit:"
            COLOR 7: LOCATE 14, 50: PRINT "(0=Exit)": COLOR 15
            LOCATE 14, 29: PRINT "(1 to 21) "; : INPUT " #"; LN
            IF LN = 0 THEN CLOSE : GOTO ed2
            IF LN > 21 THEN GOTO redoit
            IF LN < 1 THEN GOTO redoit
            COLOR 0, 7  ' <--- 2 lines above print- pick # on clrit sub
                CLOSE
                Pickline$ = "yes"
                OPEN "I", 1, file$       ' re-open file to locate line
                ON ERROR GOTO err1       ' selected in LN above.
                REDIM Seeks&(1 TO 16384)
                CurSeek& = 1
                NumLines = 0
                DO UNTIL EOF(1)
                    LINE INPUT #1, Text$
                     IF NumLines = LN - 1 THEN temp$ = Text$
                      NumLines = NumLines + 1
                     Seeks&(NumLines) = CurSeek&
                    CurSeek& = CurSeek& + LEN(Text$) + 2
                LOOP
                CLOSE
                Text$ = temp$               ' get the line requested
            GOTO ed
        CASE CHR$(0) + CHR$(72)             ' Up Arrow
            SeekEl = SeekEl - 1
            IF SeekEl < 1 THEN SeekEl = 1: GOTO KeyProcess2
        CASE CHR$(0) + CHR$(80)             ' Dn Arrow
            SeekEl = SeekEl + 1
            IF SeekEl + 20 > NumLines THEN SeekEl = SeekEl - 1: GOTO KeyProcess2
        CASE CHR$(0) + CHR$(77)             ' Right Arrow
            CurCol = CurCol + 1
        CASE CHR$(0) + CHR$(75)             ' Left Arrow
            CurCol = CurCol - 1
            IF CurCol < 1 THEN CurCol = 1: GOTO KeyProcess2
        CASE CHR$(0) + CHR$(73)             ' Page Up
            SeekEl = SeekEl - 20
            IF SeekEl < 1 THEN SeekEl = 1
        CASE CHR$(0) + CHR$(81)             ' Page Dn
            SeekEl = SeekEl + 20
            IF SeekEl > NumLines THEN
                SeekEl = NumLines - 20: GOTO KeyProcess2
            END IF
        CASE CHR$(0) + CHR$(71)                       ' Home Key
            IF linum < NumLines + 1 GOTO ed           ' Initiates Edit Line
        CASE CHR$(0) + CHR$(79)                       ' End Key adds blank
            GOTO addaline 'Escape = true              ' line to end of file.
        CASE ELSE
            GOTO KeyProcess2
    END SELECT
RETURN
CLS : END
addaline:
        CLOSE                     'add a blank line to the end of a file.
        OPEN file$ FOR INPUT AS #1
        OPEN "temp.dat" FOR OUTPUT AS #2
        DO UNTIL EOF(1)       'linecount = Numlines
                LINE INPUT #1, Text2$
        PRINT #2, Text2$
        LOOP
PRINT #2, ""
CLOSE #1
CLOSE
SHELL "copy temp.dat " + file$
GOTO ed2
addlinein:      
        CLOSE                     'add a blank line where user wants it.
        CALL clrit: i = 0
        LOCATE 13, 23: PRINT "Enter Line to insert a Blank": LOCATE 14, 50: PRINT "(0=Exit)"
        LOCATE 14, 24: PRINT "Line: ( 1 to"; NumLines; ")"; : INPUT temp
        IF temp = 0 THEN GOTO ed2
        OPEN file$ FOR INPUT AS #1
        OPEN "temp.dat" FOR OUTPUT AS #2
        DO UNTIL EOF(1)       'linecount = Numlines
                LINE INPUT #1, Text2$
                i = i + 1: IF i = temp THEN PRINT #2, ""
        PRINT #2, Text2$
        LOOP
CLOSE #1
CLOSE
SHELL "copy temp.dat " + file$
GOTO ed2
removeline:
        CLOSE                     'add a blank line where user wants it.
        CALL clrit: i = 0
        LOCATE 13, 25: PRINT "Enter Line number to Remove ": LOCATE 14, 50: PRINT "(0=Exit)"
        LOCATE 14, 24: PRINT "Line: ( 1 to"; NumLines; ")"; : INPUT temp
        IF temp = 0 THEN GOTO ed2
        OPEN file$ FOR INPUT AS #1
        OPEN "temp.dat" FOR OUTPUT AS #2
        DO UNTIL EOF(1)
                LINE INPUT #1, Text2$
                i = i + 1
        IF i <> temp THEN PRINT #2, Text2$
        LOOP
CLOSE #1
CLOSE
SHELL "copy temp.dat " + file$
GOTO ed2
err1:
        COLOR 15, 0: CLS
        LOCATE 12, 35: PRINT "File Error....";
        LOCATE 18, 10: COLOR 14: PRINT "press any key to continue"
        SLEEP
        CLOSE
GOTO begin

REM $STATIC
SUB clrit
COLOR 1   ' <----draw a small input box
LOCATE 13, 20: PRINT STRING$(40, 219)
LOCATE 14, 20: PRINT STRING$(40, 219)
COLOR 7, 1
LOCATE 12, 20: PRINT CHR$(201); STRING$(38, 205); CHR$(187)
LOCATE 13, 20: PRINT CHR$(186); TAB(59); CHR$(186)
LOCATE 14, 20: PRINT CHR$(186); TAB(59); CHR$(186)
LOCATE 15, 20: PRINT CHR$(200); STRING$(38, 205); CHR$(188)
COLOR 15, 1
END SUB

SUB Editor (Text$, LeftCol, RightCol, KeyCode, LN)
    '----- Find the cursor's size in Scan Lines
    DEF SEG = 0                                 ' Peek at low memory to see
    IF PEEK(&H463) = &HB4 THEN                  'what type of monitor we have
       CsrSize = 12                             'Monochrome uses 13 scan lines
    ELSE                                        '   (numbered 0 to 12)
       CsrSize = 7                              '  Color uses 8 (0 to 7)
    END IF
    Edit$ = SPACE$(RightCol - LeftCol + 1)
    LSET Edit$ = Text$                          '          editing
    'IF LN < 23 THEN Edit$ =

    'TxtPos = LN - LeftCol + 1
    IF LN < 23 AND LN <> 0 THEN TxtPos = LN - LeftCol + 1: GOTO skip
    TxtPos = POS(0) - LeftCol + 1               'Get the cursor's location to
skip:  
    IF TxtPos < 1 THEN TxtPos = 1               ' see where to begin editing
    IF TxtPos > LEN(Edit$) THEN TxtPos = LEN(Edit$)
   
    IF LN < 23 AND LN <> 0 THEN LOCATE LN + 2, LeftCol: GOTO skip2
    LOCATE , LeftCol                          'Print the editing string
skip2:
    PRINT Edit$;
    DO
         LOCATE , LeftCol + TxtPos - 1, 1         'Locate the cursor, turn it on
   '    LOCATE , LeftCol + LN - 1, 1         'Locate the cursor, turn it on

       DO                                       '    Wait for a key press
          Ky$ = INKEY$
       LOOP UNTIL LEN(Ky$)
       IF LEN(Ky$) = 1 THEN                     'Make a key code from Ky$
          KeyCode = ASC(Ky$)                    ' Single character key
       ELSE
          KeyCode = -ASC(RIGHT$(Ky$, 1))        'Extended keys are negative
       END IF
       SELECT CASE KeyCode
          CASE 8
             TxtPos = TxtPos - 1                'Back up the text pointer
           '  LOCATE , LeftCol + LN - 1, 0   ' Locate 1 to the left
             LOCATE , LeftCol + TxtPos - 1, 0   ' Locate 1 to the left
             IF TxtPos > 0 THEN                 'Still within the field?
                IF Insert THEN                  ' Truncate the string
                   MID$(Edit$, TxtPos) = MID$(Edit$, TxtPos + 1) + " "
                ELSE                            '   Blank the letter
                   MID$(Edit$, TxtPos) = " "
                END IF
                PRINT MID$(Edit$, TxtPos);      'Print the new part of text
             END IF
          CASE 13, 27
             EXIT DO                            'Bail out
          CASE 32 TO 254
             LOCATE , , 0                       'Turn the cursor off
             IF Insert THEN                     'Expand the text string
                MID$(Edit$, TxtPos) = Ky$ + MID$(Edit$, TxtPos)
                PRINT MID$(Edit$, TxtPos);      'Print the expanded part
             ELSE
                MID$(Edit$, TxtPos) = Ky$       'Put the new letter in string
                PRINT Ky$;                      'Print the letter
             END IF
             TxtPos = TxtPos + 1                'Increment the text pointer
          CASE -75
             TxtPos = TxtPos - 1                'Decrement the text pointer
          CASE -77
             TxtPos = TxtPos + 1                'Increment the text pointer
          CASE -71
             TxtPos = 1                         'Move text pointer to 1
          CASE -79
             FOR N = LEN(Edit$) TO 1 STEP -1    'Look backwards for non-blank
                IF MID$(Edit$, N, 1) <> " " THEN EXIT FOR
             NEXT
             TxtPos = N + 1                     'Set pointer to last char +1
             IF TxtPos > LEN(Edit$) THEN TxtPos = LEN(Edit$)
          CASE -82
             Insert = NOT Insert                'Toggle the Insert state
             IF Insert THEN                     'Adjust the cursor size
                LOCATE , , , CsrSize \ 2, CsrSize
             ELSE
                LOCATE , , , CsrSize - 1, CsrSize
             END IF
          CASE -83                              'Truncate the text
             MID$(Edit$, TxtPos) = MID$(Edit$, TxtPos + 1) + " "
             LOCATE , , 0                       'Print the truncated part
             PRINT MID$(Edit$, TxtPos);
          CASE ELSE                             'All other keys,
             EXIT DO                            '  bail out
       END SELECT
    LOOP UNTIL TxtPos < 1 OR TxtPos > LEN(Edit$) 'If cursor is out of field,
    Text$ = RTRIM$(Edit$)                       'Trim the right side of text

END SUB

SUB layout
COLOR 1, 7: PRINT : PRINT "Editing Keys:": COLOR 0
PRINT "ÚÄÄÄÄÄÄÄ¿                              Edit the bottom (Home) line       Jump"
PRINT "³Esc    ³                   toggle typeover/insert text__       |      Page Up"
PRINT "ÀÄÄÄÄÄÄÄÙ--Exit Editor                                   |      |         |"
PRINT "                         ÚÄÄÄÄÄ¿ÚÄÄÄÄÄ¿ ÚÄÄÄÄÄÄÄÄÄ¿  ÚÄÄÄÄÄÄ¿ÚÄÄÄÄÄÄ¿ÚÄÄÄÄÄÄÄÄ¿"
PRINT "          remove a line--³  -  ³³  +  ³ ³Backspace³  ³Insert³³ Home ³³ PageUp ³"
PRINT "                         ÀÄÄÄÄÄÙÀÄÄÄÄÄÙ ÀÄÄÄÄÄÄÄÄÄÙ  ÀÄÄÄÄÄÄÙÀÄÄÄÄÄÄÙÀÄÄÄÄÄÄÄÄÙ"
PRINT " ÚÄÄÄÄÄ¿          insert a line____|       ÚÄÄÄÄÄÄ¿  ÚÄÄÄÄÄÄ¿ÚÄÄÄÄÄÄ¿ÚÄÄÄÄÄÄÄÄ¿"
PRINT " ³ Tab ³__                                 ³      ³  ³Delete³³  End ³³ PageDn ³"
PRINT " ÀÄÄÄÄÄÙ  |               Save an   ÚÄÄÄÄÄÄÙ      ³  ÀÄÄÄÄÄÄÙÀÄÄÄÄÄÄÙÀÄÄÄÄÄÄÄÄÙ"
PRINT "  edit lines 1-21         edited    ³  Enter      ³     |       |   Down a Page"
PRINT "                          line ---->ÀÄÄÄÄÄÄÄÄÄÄÄÄÄÙ     |     add a"
PRINT "                                                        |   blank line"
PRINT "      further descriptons                  Delete Text__| to end of file."
PRINT "      type (Help) at the                  (in edit line)       ÚÄÄÄÄ¿ "
PRINT "         main screen.                                          ³ "; CHR$(24); "  ³"
PRINT "                                 Text scrolling keys ------>   ÀÄÄÄÄÙ      "
COLOR 14: PRINT " Press any"; : COLOR 0: PRINT "                      up, down, right, left    ÚÄÄÄÄ¿ÚÄÄÄÄ¿ÚÄÄÄÄ¿"
COLOR 14: PRINT "  key to"; : COLOR 0: PRINT "                                    -----------> ³ "; CHR$(27); "  ³³ "; CHR$(25); "  ³³  "; CHR$(26); " ³"
COLOR 14: PRINT " Continue"; : COLOR 0: PRINT "                                                ÀÄÄÄÄÙÀÄÄÄÄÙÀÄÄÄÄÙ"
SLEEP
END SUB

SUB updates
'       Programming Updates:                                         Version:
'
' Updates:
'       12/97  -File Viewing options only.                              1.0
'               multiple file extension viewing.
'        1/98  -Single line editing (experiments).                      1.1
'               editing works but cannot save file.
'        1/98  -Edit and Save options now work while in full
'               screen mode!..edit by line number or position           1.2
'               1 remaining bug: line # edits current line + chosen
'               line. +need to add addtional editing options.   
'      1/21/98  work on pick line edit command started w/TAB key.
'               got the line edit for lines 1-21 to work.
'               Added (+ and -) keys to add or delete a specific
'               code line.
'      2/15/98  re-set editor to edit any ASCII files.                  1.5
'               (End of Programming by Everingham)
'               let me know what you add!  e-mail: abacus@pathwaynet.com
'               add your updates here.
END SUB