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harbour-core/tests/longdev.prg
Viktor Szakats 3ed9fa0f45 2016-01-14 19:33 UTC+0100 Viktor Szakats (vszakats users.noreply.github.com)
* *
    % remove brandings and homepage from copyright header. Pass 2 - semi-auto.
    * project homepage and name is described in README, amongst others
    ; this should make the diff between 3.4 and 3.2 easier to manage
2016-01-14 19:35:07 +01:00

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// Testing Harbour long string handling with device output
/* Donated to the public domain on 2001-03-08 by David G. Holm <dholm jsd-llc com> */
PROCEDURE Main()
LOCAL cShort := "1234567890"
LOCAL i, cLong, cBuffer, nHandle
// Create an 80 KB string (Clipper is limited to 64 KB).
cLong := cShort
FOR i := 1 TO 13
cLong += cLong
NEXT
// Write the long string to file longdev.prn
SET PRINTER TO longdev
SET DEVICE TO PRINTER
DevOut( cLong )
SET PRINTER OFF
SET DEVICE TO SCREEN
// Confirm the string length and that a copy is exactly identical.
? "The length of the long string is", iif( Len( cLong ) == 80 * 1024, "correct", "wrong" )
cBuffer := cLong
? "The length of a copy of the long string is", iif( Len( cLong ) == 80 * 1024, "correct", "wrong" )
? "The copy of the long string is", iif( cLong == cBuffer, "equal", "not equal" ), "to the long string"
// Read the string back in and compare it to the original.
nHandle := FOpen( "longdev.prn" )
cBuffer := FReadStr( nHandle, 90000 )
? "Original:", Len( cLong )
? "From file:", Len( cBuffer )
? "The strings are", iif( cLong == cBuffer, "equal", "not equal" )
RETURN