Hi,
First post to the pdfbox dev team. So, first things first. Thank you for your efforts into this quality product. Have been using PDFBox for a while now, and it's held up to a lot of different documents that have needed parsing and thumbnailing. Onto the issue that I have come across. When calling PDPage.convertToImage(imagetype,resolution) , I have found a case where the application hangs. No error messages, no exceptions, no CPU spike, no I/O. The error had to do with some strange corruption of the awtFont, by the time it reached the method PDSimpleFont.drawString. Some pretty deep digging turned up that if a font with too few glyphs is sent into PDSimpleFont.writeFont, it will enter Graphics2D.drawString ... ne'er to return. If a check is done to count the glyphs and if they fall below a certain threshold, then just re-instantiate the Font, then all goes well. Typical numbers range from 70 to 1000+, so I've gone with an arbitrary value of 40. All goes well, and I can't measure any difference in performance (except that my app will actually return from attempting this doc!). I've got a sample PDF which can re-create the problem, and a patch which seems to solve it sensibly. Who is maintaining this part of the project, for me to send to? My configuration O/S : Ubuntu 8.04 Headless PDFBox : 1.5.0 The offending string Font : Tahoma String : 0x20 (space) Thanks, -Craig
