[iText-questions] NPE in TiffImage if RowsPerStrip is missing

[Ronald Dauster]

iText 1.0 throws a NullPointerException if one tries to read a bilevel TIFF image that does not contain the RowsPerStrip tag (278).   According to the TIIF 6.0 specification, pg. 39, RowsPerStrip is optional and has a default value of 2**32-1.   The following trivial change fixes this.   /src/com/lowagie/text/pdf/codec/TiffImage.java 145c145,148 <             long tstrip = dir.getFieldAsLong(TIFFConstants.TIFFTAG_ROWSPERSTRIP); --- >             long tstrip = 0xFFFFFFFFL; >             if (dir.isTagPresent(TIFFConstants.TIFFTAG_ROWSPERSTRIP)) { >                 tstrip = dir.getFieldAsLong(TIFFConstants.TIFFTAG_ROWSPERSTRIP); >             }   Regards, Ronald Dauster