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harbour-core/harbour/tests/longdev.prg
1999-10-04 18:46:41 +00:00

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//
// $Id$
//
// Testing Harbour long string handling with device output.
/* Harbour Project source code
http://www.Harbour-Project.org/
Copyright 1999 David G. Holm <dholm@jsd-llc.com>
See doc/hdr_tpl.txt, Version 1.2 or later, for licensing terms.
*/
FUNCTION Main()
LOCAL cShort := "1234567890"
LOCAL i, j, 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 long_str.prn
SET PRINTER TO long_str
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", IF( LEN( cLong ) == 80 * 1024, "correct", "wrong" )
cBuffer := cLong
? "The length of a copy of the long string is", IF( LEN( cLong ) == 80 * 1024, "correct", "wrong" )
? "The copy of the long string is", IF( cLong == cBuffer, "equal", "not equal" ), "to the long string"
// Read the string back in and compare it to the original.
nHandle := FOPEN( "long_str.prn" )
cBuffer := FREADSTR( nHandle, 90000 )
? "Original:", LEN( cLong )
? "From file:", LEN( cBuffer )
? "The strings are", IF( cLong == cBuffer, "equal", "not equal" )
return nil