In Mark Wieder's example I had mistakenly thought that he was converting
Unicode line endings only for his PC-specific storage needs. Turns out
that this is needed to display as well (though I'm still not sure why it
should be necessary).
So here's the latest function for putting binary data from a file into a
form suitable for tucking into the unicodeText of a field:
function RawDataToUTF16 pData
-- Examine the data to determine encoding:
switch
case charToNum(byte 1 of pData) = 0
put "UTF16BE" into tTextEncoding
break
case charToNum(byte 1 of pData) = 0xFE and charToNum(char 2 of pData)
= 0xFF
delete byte 1 to 2 of pData
put "UTF16BE" into tTextEncoding
break
case charToNum(byte 1 of pData) = 0xFF and charToNum(char 2 of pData)
= 0xFE
delete byte 1 to 2 of pData
put "UTF16LE" into tTextEncoding
break
default
put "UTF8" into tTextEncoding
break
end switch
--
if tTextEncoding begins with "UTF16" then
-- Check byte order, swapping if needed:
if the processor is "x86" then
put "LE" into tHostByteOrder
else
put "BE" into tHostByteOrder
end if
if byte -2 to -1 of tTextEncoding <> tHostByteOrder then
put swapbytes(pData) into pData
end if
-- Already utf16, so nothing more needs to be done:
#put uniEncode(uniDecode(pData, utf16),16) into tFieldData
put pData into tFieldData
else
-- Convert from utf8 to Rev's native utf16:
put uniEncode(pData, "UTF8") into tFieldData
end if
--
replace CRLF with cr in tFieldData
replace numtochar(13) with cr in tfieldData
return tFieldData
end RawDataToUTF16
I still don't have a solution for using formattedText with Unicode, but
may be able to find an algorithm for what I'm doing which bypasses that.
Many thanks are due to Devin Asay. His summary notes here are a helpful
introduction to working with Unicode in Rev:
<http://revolution.byu.edu/unicode/unicodeInRev.php>
PS: While having this solution is cool, and seems to reliably handle a
wider range of files than even TextEdit does in its automatic mode, I
find myself thinking there should be an easier way to do something as
simple as putting text into a field. Maybe Rev 5.0? :)
--
Richard Gaskin
Fourth World
Revolution training and consulting: http://www.fourthworld.com
Webzine for Rev developers: http://www.revjournal.com
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