I don't know where Acrobat stands now but with earlier versions it would get
confused with different subset fonts with the same prefix. It may be wiser to
call PdfReader.shuffleSubsetNames() just in case.
Paulo
________________________________________
From: Carsten Hammer [carsten.ham...@t-online.de]
Sent: Tuesday, November 10, 2009 11:42 PM
To: itext-questions@lists.sourceforge.net
Subject: [iText-questions] is a pdf file coming out of pdf file concatination
always valid?
Hi,
while investigating some problems with concatenation of pdf files the
question came up if it is neccessary to recreate the
"font-subset-prefix" to prevent a name clash. I do not see a obvious
problem not doing this in the pdf reference manual. Acrobat does not
seem to care. If you run the attached Java class two nearly identical
pdf files will be generated "StandardType1Fonts1.pdf" and
"StandardType1Fonts2.pdf". In another step these two files are joined in
another file "out.pdf". There seems to be no prefix processing.
PDFSmartcopy throws out one copy of the font. The last file "out2.pdf"
is created by copying "StandardType1Fonts1.pdf" twice into the same
file. Because of using the same input file twice the prefix is always
the same. There is no big difference - Acrobat shows only one font
because of the same name.
Are there any known problems using itext's PDFCopy/PDFSmartCopy to merge
pdf files?
Best regards,
Carsten
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