'===========================================================================
' Subject: WORD WRAP WITH JUSTIFICATION      Date: 02-27-98 (00:57)       
' Author:  Jonathan L. Leger                 Code: QB, QBasic, PDS        
' Origin:  leger@earthlink.net             Packet: TEXT.ABC
'===========================================================================
'========================================================================
' Simple word wrapper for text files.  (Code: William Yu  Date: 04-08-97)
' 100% PUBLIC DOMAIN, please use freely.
'
' Purpose: Wraps a line exceeding the specified wrap limit (WrapLimit).
'          Made especially for Windows documents saved as plain text.
'========================================================================
'**************************************
'*** Modifcations by Jonathan Leger ***
'************************************************************************
'*** This is a very useful program, so I thought I would add another  ***
'*** very useful feature--justification.  That way the files turn out ***
'*** to be very pleasant-looking. =)  So it now justifies the output  ***
'*** text.  I also added the wrapping of hyphens as well as spaces,   ***
'*** and the ability to search for the file you want to word wrap &   ***
'*** justify (thanks to Kurt Kuzba for the menu choice routine!)      ***
'************************************************************************

DEFINT A-Z

TYPE ListType
   F AS STRING * 14
END TYPE

DECLARE FUNCTION Justify$ (s$, wraplimit%)
DECLARE FUNCTION GetWords (s$, Words$())
DECLARE FUNCTION ChoseFile$ (dd$)

DECLARE FUNCTION MenuChoice$ (BF() AS ListType) '*** by Kurt Kuzba
DECLARE SUB BoxBorder ()                        '*** by Kurt Kuzba

CONST False = 0
CONST True = NOT False

SCREEN 0, 0, 0
WIDTH 80, 25
VIEW PRINT 1 TO 25
COLOR 7, 0, 0
CLS

wraplimit = 78                      ' Start wrapping at which column?

COLOR 14, 1
LOCATE 1, 1: PRINT "[" + STRING$(78, " ") + "]";
LOCATE 1, 30: PRINT "Text File Word Wrapper/Justifier"
LOCATE 25, 1: PRINT "[" + STRING$(78, " ") + "]";
COLOR 3, 0
FOR y = 2 TO 23 STEP 2
   FOR x = 1 TO 80 STEP 5
      LOCATE y, x: PRINT ".";
   NEXT x
   FOR x = 4 TO 80 STEP 5
      LOCATE y + 1, x: PRINT ".";
   NEXT x
NEXT y

FileName$ = ChoseFile$(dd$)                 ' Get input file.
filenum = FREEFILE
OPEN dd$ + FileName$ FOR INPUT AS filenum   ' No file checking done.

OutFile$ = "NEWDOC.TXT"
OutFileNum = FREEFILE
OPEN OutFile$ FOR OUTPUT AS OutFileNum  ' No file exist checking done.

DO
  LINE INPUT #filenum, Text$            ' Read in text.
  Text$ = Text$ + CHR$(13)              ' *** End in a carriage return for
                                        ' *** justication purposes.
  IF LEN(Text$) <= wraplimit THEN       ' If line does not exceed wrap limit
    PRINT #OutFileNum, Text$            ' then no need to parse line.
  ELSE
    CantWrap = False      ' Used as a dummy error (ie. WrapLimit = 1..etc)
    WHILE (LEN(Text$) > wraplimit) AND (CantWrap = False)
      CantWrap = True
      FOR I = wraplimit TO 1 STEP -1      ' Parse backwards.
        IF MID$(Text$, I, 1) = " " THEN   ' For first occurence of a sp.
          NewText$ = LEFT$(Text$, I - 1)  ' --> Get new text.
          CantWrap = False                ' --> Set back to false.
          EXIT FOR                        ' --> No more parsing needed.
        ELSEIF MID$(Text$, I, 1) = "-" THEN '*** Or 1st occurence of a hyphen.
          NewText$ = LEFT$(Text$, I)
          CantWrap = False
          EXIT FOR
        END IF
      NEXT I
      IF CantWrap = False THEN
        Text$ = MID$(Text$, I + 1, LEN(Text$))
        '*** Justify the output text.
        NewText$ = Justify$(NewText$, wraplimit)
        PRINT #OutFileNum, NewText$
      END IF
    WEND
    PRINT #OutFileNum, Text$              ' Dump remaining text to file.
  END IF
LOOP UNTIL EOF(filenum)                   ' parse entire file

CLOSE filenum, OutFileNum
LOCATE 25, 3: COLOR 14, 1: PRINT "File output to " + OutFile$ + ". [*PRESS A KEY*]";
WHILE INKEY$ = "": WEND
COLOR 7, 0
CLS

END

SUB BoxBorder
   COLOR 15, 1
   LOCATE 7, 30
   PRINT " "; CHR$(218); CHR$(194); STRING$(14, 196);
   PRINT CHR$(194); CHR$(191); " ";
   FOR t% = 1 TO 10
      LOCATE 7 + t%, 30
      PRINT " "; STRING$(2, 179); SPACE$(14); STRING$(2, 179); " ";
   NEXT
   LOCATE 18, 30
   PRINT " "; CHR$(192); CHR$(193); STRING$(14, 196);
   PRINT CHR$(193); CHR$(217); " ";
END SUB

FUNCTION ChoseFile$ (dd$)

DIM FileList(0 TO 1000) AS ListType
DIM DirList(1 TO 500) AS ListType

   '*** Get current directory.
   SHELL "cd > #$!file.#$!"
   filenum = FREEFILE
   OPEN "#$!file.#$!" FOR INPUT AS filenum
   LINE INPUT #filenum, dd$
   CLOSE filenum
   KILL "#$!file.#$!"

DO

   BoxBorder
  
   fcount = 0
   dcount = 0

   IF RIGHT$(dd$, 1) <> "\" THEN dd$ = dd$ + "\"
   SHELL "dir " + dd$ + "*.* /o:n > #$!file.#$!"                  '*** An unlikely name.

   filenum = FREEFILE
   OPEN "#$!file.#$!" FOR INPUT AS filenum

   '*** Read in the files.
   DO WHILE NOT (EOF(filenum))
      LINE INPUT #filenum, F$
      IF INSTR(F$, "<DIR>") > 0 THEN                  '*** Directory?
         dcount = dcount + 1
         DirList(dcount).F = LEFT$(F$, 12)
      ELSEIF LEFT$(F$, 1) <> " " AND F$ <> "" THEN    '*** File?
         IF LEFT$(F$, 12) <> "#$!FILE  #$!" THEN
            fcount = fcount + 1
            FileList(fcount).F = LEFT$(F$, 12)
         END IF
      END IF
   LOOP

   CLOSE filenum: KILL "#$!file.#$!"                  '*** Kill the list file.

   dc = 0
   FOR nextf = fcount + 1 TO fcount + dcount + 1
      dc = dc + 1
      FileList(nextf).F = "[" + DirList(dc).F + "]"
   NEXT nextf

   FileList(0).F = LTRIM$(RTRIM$(STR$(nextf - 2)))

   Fchoice$ = LTRIM$(RTRIM$(MenuChoice$(FileList())))
   IF Fchoice$ = "" THEN
      END
   ELSEIF LEFT$(Fchoice$, 1) = "[" THEN
      dd$ = dd$ + LTRIM$(RTRIM$(MID$(Fchoice$, 2, LEN(Fchoice$) - 1)))
   ELSE
      File$ = LEFT$(Fchoice$, INSTR(Fchoice$, " ") - 1)
      File$ = File$ + "." + MID$(Fchoice$, 10, 3)
      EXIT DO
   END IF

LOOP

   ChoseFile$ = File$

END FUNCTION

'****************************************
'*** GetWords() *** by Jonathan Leger ***
'*******************************************
'*** Extracts all "words" from a string, ***
'*** where a "word" is considered any    ***
'*** set of characters the lies between  ***
'*** two spaces.                         ***
'*******************************************
FUNCTION GetWords (s$, Words$())

wordcount = 0
spaceloc = INSTR(s$, " ")     '*** First space!

IF spaceloc > 0 THEN

   '*** Store first word.
   wordcount = wordcount + 1
   Words$(wordcount) = LEFT$(s$, spaceloc - 1)
   s$ = RIGHT$(s$, LEN(s$) - spaceloc)


   '*** Extract remaining words.
   s$ = LTRIM$(s$)               '*** Just in case there are extra spaces.
   spaceloc = INSTR(s$, " ")
   DO WHILE spaceloc
      wordcount = wordcount + 1
      Words$(wordcount) = LEFT$(s$, spaceloc - 1)
      s$ = LTRIM$(RIGHT$(s$, LEN(s$) - spaceloc))
      spaceloc = INSTR(s$, " ")
   LOOP

   '*** Get last word.
   wordcount = wordcount + 1
   Words$(wordcount) = LTRIM$(RTRIM$(s$))       '*** Remove extra spaces.

   '*** Return number of words in string.
   GetWords = wordcount

ELSE

   '*** No words to extract!
   GetWords = 0
   EXIT FUNCTION

END IF

END FUNCTION

'****************************************
'*** Justify$() *** by Jonathan Leger ***
'****************************************
'*** Justifies a string of text to the***
'*** number of sps specified in    ***
'*** <wraplimit>.                     ***
'****************************************
FUNCTION Justify$ (s$, wraplimit)

DIM Words$(1 TO 50)        '*** Allow for 50 words--should be plenty!

'*** First we need to determine if we _want_ to justify the line.
'*** I altered the main code of the program to append a carriage return
'*** to the end of each line.  If the line we're working with ends in
'*** that carriage return (since BASIC strips the CR in its INPUT routine),
'*** then it's the end of a paragraph, so we don't justify it.
IF RIGHT$(s$, 1) = CHR$(13) THEN

   '*** Ends in CR--(strip the CR)--don't justify.
   Justify$ = LEFT$(s$, LEN(s$) - 1)

ELSE

   '*** Put all of the words in the line into Words$()
   numwords = GetWords(s$, Words$())

   IF numwords > 0 THEN

      '*** Figure out how long the string is presently
      '*** (after adding a space to the end of each word--except the last one)
      slen = 0
      FOR word = 1 TO numwords - 1
         Words$(word) = Words$(word) + " "
         slen = slen + LEN(Words$(word))
      NEXT word
      slen = slen + LEN(Words$(numwords))
  
      midword = CINT(numwords / 2)     '*** Roughly the middle of the string.
      prvword = midword
      nxtword = midword + 1
      begword = 1
      lastword = numwords - 1

      DO WHILE slen < wraplimit        '*** Keep goin' til the right length.

         '*** Add spaces in this order:
         '***   after middle word
         '***   after first word
         '***   before last word
         '***   word left of middle word  <----+
         '***   after second word              |
         '***   before second to last word     |
         '***   word right of middle word      |
         '***   after third word               |
         '***   before third to last word  ----+
         '*** Got it?

            Words$(prvword) = Words$(prvword) + " "
            slen = slen + 1
            prvword = prvword - 1

            IF prvword = begword OR prvword < 1 THEN
               prvword = midword - 1
            END IF

            IF slen < wraplimit THEN
              
               Words$(begword) = Words$(begword) + " "
               slen = slen + 1
               begword = begword + 1

               IF begword = midword THEN
                  begword = 1
               END IF

               IF slen < wraplimit THEN
                  Words$(lastword) = Words$(lastword) + " "
                  slen = slen + 1
                  lastword = lastword - 1

                  IF lastword = nxtword OR lastword < 1 THEN
                     lastword = numwords - 1
                  END IF

                  IF slen < wraplimit THEN
                     Words$(nxtword) = Words$(nxtword) + " "
                     slen = slen + 1
                     nxtword = nxtword + 1

                     IF nxtword = lastword THEN
                        nxtword = midword + 1
                     END IF

                  END IF
               
               END IF

            END IF

      LOOP

      s$ = ""
      FOR word = 1 TO numwords
         s$ = s$ + Words$(word)
      NEXT word

      '*** Justified!
      Justify$ = s$

   ELSE

      '*** No words, can't justify, so abort.
      Justify$ = s$

   END IF

END IF

END FUNCTION

FUNCTION MenuChoice$ (BF() AS ListType)
   hi% = VAL(BF(0).F): choice% = 1: index% = 1
   DO
      FOR t% = 0 TO 9
         LOCATE 8 + t%, 33, 0
         COLOR 15, 1: IF choice% = (t% + index%) THEN COLOR 1, 7
         s$ = SPACE$(14)
         IF (t% + index%) <= hi% THEN MID$(s$, 2) = BF(t% + index%).F
         IF MID$(s$, 2, 1) = "[" THEN MID$(s$, 13, 1) = "]"
         PRINT s$;
      NEXT
      DO: k$ = UCASE$(INKEY$): LOOP WHILE k$ = ""
      k% = ASC(k$): IF k% = 0 THEN k% = -ASC(MID$(k$, 2))
      SELECT CASE k%
         CASE 13: MenuChoice$ = BF(choice%).F: EXIT DO
         CASE 27: MenuChoice$ = "": EXIT DO
         CASE -71: choice% = 1: index% = 1
         CASE -72: choice% = choice% + (choice% > 1)
            IF choice% < index% THEN index% = choice%
         CASE -73: choice% = choice% - 10: index% = index% - 10
            IF choice% < 1 THEN choice% = 1
            IF index% < 1 THEN index% = 1
         CASE -79: choice% = hi%: index% = hi% - 9
            IF index% < 1 THEN index% = 1
         CASE -80: choice% = choice% - (choice% < hi%)
            IF index% < (choice% - 9) THEN index% = choice% - 9
         CASE -81: choice% = choice% + 10: index% = index% + 10
            IF choice% > hi% THEN choice% = hi%
            IF index% < (choice% - 9) THEN index% = choice% - 9
      END SELECT
   LOOP

END FUNCTION