mirror of
https://github.com/QB64-Phoenix-Edition/QB64pe.git
synced 2024-09-28 05:17:49 +00:00
104 lines
3.9 KiB
QBasic
104 lines
3.9 KiB
QBasic
|
'***************************************************************************
|
||
|
'*
|
||
|
'* Keyboard input parsing routine
|
||
|
'*
|
||
|
'* The idea here was to create a program that will capture input from the
|
||
|
'* keyboard and convert it into a list of words as individual strings as
|
||
|
'* the user enters text from the keyboard. Exit from the program occurs
|
||
|
'* when a carraige return is encountered.
|
||
|
'*
|
||
|
'* Using the backspace key will back up thru the text that was entered, but
|
||
|
'* for some reason it takes three key presses of backspace to go past a word
|
||
|
'* boundry. The function works so I didn't worry about it.
|
||
|
'*
|
||
|
'*
|
||
|
'*
|
||
|
'* Placed in the public domain by
|
||
|
'* William W. Sindel
|
||
|
'* April 6, 2005
|
||
|
'* Version 1.0
|
||
|
'*
|
||
|
'***************************************************************************
|
||
|
|
||
|
|
||
|
|
||
|
PRGSTART:
|
||
|
DIM word$(30) '* Max number of words we can parse
|
||
|
CLS '*
|
||
|
PRINT "start": PRINT '* Just show us where we start
|
||
|
WX = 1 '* Set word counter var to 1
|
||
|
|
||
|
GETKEY:
|
||
|
IF WX < 1 THEN WX = 1 '* To many backspaces would push
|
||
|
'* would push wx out of range
|
||
|
KB$ = INKEY$ '*
|
||
|
IF KB$ <> "" THEN GOTO printit '* Loop here until a key is pressed
|
||
|
GOTO GETKEY
|
||
|
|
||
|
printit:
|
||
|
TESTNUM = ASC(KB$) '* Find the numeric value of the
|
||
|
IF TESTNUM = 13 THEN GOTO ENDGET '* key that was pressed. This will
|
||
|
'* let us identify carraige returns
|
||
|
'* 13 = carraige return
|
||
|
|
||
|
|
||
|
'* Check for backspace key
|
||
|
IF TESTNUM <> 8 THEN GOTO SKIPBACK
|
||
|
|
||
|
'*
|
||
|
'* When backspace key pushes past a
|
||
|
'* word boundry
|
||
|
IF word$(WX) = "" THEN WX = WX - 1: GOTO GETKEY
|
||
|
|
||
|
WL = LEN(word$(WX)) '* Find the length of the word
|
||
|
WL = WL - 1 '* Shorten the wordlength by one char
|
||
|
TW$ = word$(WX) '* Get string out of the array
|
||
|
TW$ = LEFT$(TW$, WL) '* Shorten the string
|
||
|
word$(WX) = TW$ '* Put the string back in the array
|
||
|
KB$ = "" '* Get rid of the backspace char
|
||
|
GOTO RFRSH '* Update the screen
|
||
|
|
||
|
|
||
|
SKIPBACK: '* Don't accept special characters
|
||
|
IF TESTNUM < 32 OR TESTNUM > 122 THEN GOTO GETKEY
|
||
|
|
||
|
|
||
|
'* Convert lower case to upper
|
||
|
IF KB$ >= "a" AND KB$ <= "z" THEN KB$ = CHR$(ASC(KB$) - 32)
|
||
|
|
||
|
word$(WX) = word$(WX) + KB$ '* Build the word
|
||
|
'* 13 = no leading spaces
|
||
|
IF word$(1) = " " THEN word$(1) = "": GOTO GETKEY
|
||
|
'* Start the next word
|
||
|
IF KB$ = " " THEN WX = WX + 1: GOTO GETKEY
|
||
|
|
||
|
|
||
|
RFRSH: '* Loop thru the array to display
|
||
|
FOR J = 1 TO WX '* the words as they are parsed
|
||
|
LOCATE 10 + J, 1
|
||
|
PRINT SPC(78);
|
||
|
LOCATE 10 + J, 1
|
||
|
PRINT word$(J)
|
||
|
NEXT J
|
||
|
|
||
|
|
||
|
|
||
|
GOTO GETKEY '* Go get another character
|
||
|
|
||
|
|
||
|
|
||
|
ENDGET:
|
||
|
|
||
|
LOCATE 35, 1 '* When a carraige return is
|
||
|
FOR J = 1 TO WX '* detected print out the words
|
||
|
PRINT word$(J); '* as a sentence
|
||
|
NEXT J
|
||
|
|
||
|
INPUT KB$ '* This will leave the results on
|
||
|
'* the screen until a carraige
|
||
|
'* is entered
|
||
|
|
||
|
|
||
|
END
|
||
|
|
||
|
|