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Member since Jun 25, 2024
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Just dropping this here because I spent DAYS try to figure out how to get PDF to read a zlib from Intersystems.
You'll see code above to use $e(string,4,*-5) to make it "deflate" but PDF wants ZLIB.
The issue turned out to be that Intersystems adds a first # character and a last character around the zlib compression.
If you do this:
S pdfcompress=$E($System.Util.Compress(instring,"zlib"),2,*-1) ; remove first and last character
THEN the pdf reader properly reads and processes that in the stream object (when using /FlateDecode)
Wasted days just because of 2 added characters. Hope this helps someone else.
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Sorry but that is just not true. You cannot SET %B=@%A, you always get a syntax error.
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Just dropping this here because I spent DAYS try to figure out how to get PDF to read a zlib from Intersystems.
You'll see code above to use $e(string,4,*-5) to make it "deflate" but PDF wants ZLIB.
The issue turned out to be that Intersystems adds a first # character and a last character around the zlib compression.
If you do this:
S pdfcompress=$E($System.Util.Compress(instring,"zlib"),2,*-1) ; remove first and last character
THEN the pdf reader properly reads and processes that in the stream object (when using /FlateDecode)
Wasted days just because of 2 added characters. Hope this helps someone else.