Darren, FDnC Red wrote > What I don't understand is the correlation between the hex values and the > difference array. I don't see anyway to map 0x1d to T even though I know > and understand that T= /g55 and 55 + 29 = 84 which is T. Where can I find > that 0x1d = /g55? If I knew that I could extract the text properly, at > least for this one PDF.
Ok, so it is about how to interpret the Differences array as mapping. According to the PDF specification ISO 32000-1, section 9.6.6.1 > The value of the Differences entry shall be an array of character codes > and character names organized as follows: > > code1 name1,1 name1,2 … > code2 name2,1 name2,2 … > … > coden namen,1 namen,2 … > > Each code shall be the first index in a sequence of character codes to be > changed. The first character name after the code becomes the name > corresponding to that code. Subsequent names replace consecutive code > indices until the next code appears in the array or the array ends. These > sequences may be specified in any order but shall not overlap. Thus, in case of your differences array [2, /g51, /g85, /g82, /g77, /g72, /g70, /g87, /g48, /g68, /g81, /g88, /g79, /g76, /g71, /g74, /g54, /g83, /g73, /g86, /g38, /g56, /g43, /g36, /g44, /g3, /g9, /g40, /g55, /g53, /g50, /g49, /g15, /g47, /g24, /g19, /g90, /g75, /g25, /g37, /g20, /g28, /g23, /g21, /g11, /g12, /g16, /g27, /g22, /g45, /g41] the code 2 maps to /g51, 3 maps to /g85, 4 maps to /g82, ..., 0x1d maps to /g55, ... Regards, Michael -- View this message in context: http://itext-general.2136553.n4.nabble.com/Extracting-Text-tp4660444p4660454.html Sent from the iText - General mailing list archive at Nabble.com. ------------------------------------------------------------------------------ Comprehensive Server Monitoring with Site24x7. Monitor 10 servers for $9/Month. Get alerted through email, SMS, voice calls or mobile push notifications. Take corrective actions from your mobile device. http://p.sf.net/sfu/Zoho _______________________________________________ iText-questions mailing list iText-questions@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/itext-questions iText(R) is a registered trademark of 1T3XT BVBA. Many questions posted to this list can (and will) be answered with a reference to the iText book: http://www.itextpdf.com/book/ Please check the keywords list before you ask for examples: http://itextpdf.com/themes/keywords.php
