PrintW - print a long string, breaking it at the last space or hyphen before col. 79

[bplus]

mine is easy to adapt to other people's code (and works) ;-))

Code: (Select All)

_Title "wrap$ test" 'b+ 2019-12-28  a simple way

'now test in graphics screen
'SCREEN _NEWIMAGE(640, 600, 32) 'now test in graphics screen

test$ = "Four score and seven years ago our fathers brought forth on this continent, a new nation, conceived in Liberty, and dedicated to the proposition that all men are created equal."


Print "Here is printWrap at row = 9, col = 10, wrap length is 60:"
printWrap test$, 60, 9, 10
Locate 25, 20: Print "press any for another demo... ";
Sleep
Cls
test$ = "Now we are engaged in a great civil war, testing whether that nation, or any nation so conceived and so dedicated, can long endure. We are met on a great battle-field of that war. We have come to dedicate a portion of that field, as a final resting place for those who here gave their lives that that nation might live. It is altogether fitting and proper that we should do this."
Print "Here is printWrap at row = 5, col = 40, wrap length is 20:"
printWrap test$, 40, 5, 20
Locate 25, 20: Print "press any for another demo... ";
Sleep
Cls

test$ = "But, in a larger sense, we can not dedicate, we can not consecrate, we can not hallow, this ground. The brave men, living and dead, who struggled here, have consecrated it, far above our poor power to add or detract. The world will little note, nor long remember what we say here, but it can never forget what they did here. It is for us the living, rather, to be dedicated here to the unfinished work which they who fought here have thus far so nobly advanced. It is rather for us to be here dedicated to the great task remaining before us, that from these honored dead we take increased devotion to that cause for which they gave the last full measure of devotion, that we here highly resolve that these dead shall not have died in vain, that this nation, under God, shall have a new birth of freedom, and that government of the people, by the people, for the people, shall not perish from the earth."
Print "Here is printWrap at row = 5, col = 10, wrap length is 60:"
printWrap test$, 60, 5, 10
Locate 25, 20: Print "press any for another demo... ";
Sleep
End


'This function returns the first segment of string less than or equal to maxLen AND
'the remainder of the string (if any) is returned in tail$ to be used by wrap$ again
Function wrap$ (s$, maxLen, tail$)
    If Len(s$) > maxLen Then
        p = maxLen + 1
        While Mid$(s$, p, 1) <> " " And p > 1
            p = p - 1
        Wend
        If p = 1 Then
            wrap$ = Mid$(s$, 1, maxLen): tail$ = Mid$(s$, maxLen + 1)
        Else
            wrap$ = Mid$(s$, 1, p - 1): tail$ = Mid$(s$, p + 1)
        End If
    Else
        wrap$ = s$: tail$ = ""
    End If
End Function

'this sub uses the wrap$ function to print out a string with row and column offsets
Sub printWrap (s$, maxLen, rowOffset, colOffset)
    ss$ = s$ 'work with copy
    Do
        Locate rowOffset + i, colOffset: Print wrap$(ss$, maxLen, st$)
        ss$ = st$
        i = i + 1
    Loop Until Len(ss$) = 0
End Sub