Thanks, DM and Troy. I got it. I will also add this extra byte and try again.
Yes. I am writing a new editor for genbook that will allow user write html(limited tags) in a wysiwyg way. Also, it allows module generating through the gui and deploy the module to sword genbook location. I tried to use JNI to reuse c++ lib, but I gave it up because it is hard to maintain multilple OS. So I am writing the code in Java , maybe it can benefit Jsword. After I am done, I will release the code. Eventually, I would like to see a WYSIWYG editor for OSIS. But , it is a long way to go. so I decide to start from a simple editor. Troy A. Griffitts wrote: > > Dear Zj Li, > > If you are looking to write sword modules, the only supported way is to > use the SWORD engine. We neither encourage nor support manipulation of > the data files directly. Not to thwart your efforts, but can you not > merely use a few simple calls to the sword engine to write your data? > There is a very short, basic console application for interactively > writing genbook data here: > > http://svn.crosswire.org/sword/trunk/utilities/genbookutil.cpp > > It exercises every function of genbook editing. If you cannot call the > C++ engine directly or through any of the many binding swig produces, > you should easily be able to change the interactive menu at the bottom > of this short program into command line parameters, creating a simple > utility you can call from your application. > > Regarding your specific question. The null which separates the node > name from user data associated with the node is written here: > > http://svn.crosswire.org/sword/trunk/src/keys/treekeyidx.cpp > ... > void TreeKeyIdx::saveTreeNode(TreeNode *node) { > ... > datfd->write(node->name, strlen(node->name)); > char null = 0; > datfd->write(&null, 1); > > Which is actually silly; all three lines should be reduced to: > > datfd->write(node->name, strlen(node->name)+1); > > > But I guess it does read easier the current way. > > Blessings in your work for our Lord! > -Troy. > > > DM Smith wrote: >> JZ, >> >> I'll have to leave the answer to Troy to answer. I don't know the >> original reason. My guess would be that it was influenced by C where >> a byte with a 0 value is a string terminator. Rather than storing a >> length byte the data starts at the expected location and stops when 0 >> is encountered. >> >> May I ask why you want to know this? Is there a bug to fix or a >> feature you would like to add? >> >> DM >> >> On Aug 24, 2007, at 1:32 PM, ZJ Li wrote: >> >>> DM , >>> >>> I notice that for genbook, we have the following code to read dat >>> file: >>> >>> byte[] buffer = SwordUtil.readRAF(datRaf, offset, 12); >>> node.setParent(SwordUtil.decodeLittleEndian32(buffer, 0)); >>> node.setNextSibling(SwordUtil.decodeLittleEndian32(buffer, 4)); >>> node.setFirstChild(SwordUtil.decodeLittleEndian32(buffer, 8)); >>> >>> buffer = SwordUtil.readUntilRAF(datRaf, (byte) 0); >>> int size = buffer.length; >>> if (buffer[size - 1] == 0) >>> { >>> size--; >>> } >>> >>> Key key = new DefaultKeyList(null, bmd.getName()); >>> // Some of the keys have extraneous whitespace, so remove it. >>> node.setName(SwordUtil.decode(key, buffer, size, >>> bmd.getBookCharset()).trim()); >>> >>> buffer = SwordUtil.readNextRAF(datRaf, 2); >>> >>> at this line: >>> buffer = SwordUtil.readUntilRAF(datRaf, (byte) 0); >>> >>> we look for the byte 0 for stop position. so we can get the node name >>> from data file. >>> >>> My question is did we originally put this extract byte after the name? >>> >>> Troy, can you confirm this? >>> >>> Thx. >> >> _______________________________________________ >> sword-devel mailing list: sword-devel@crosswire.org >> http://www.crosswire.org/mailman/listinfo/sword-devel >> Instructions to unsubscribe/change your settings at above page > > > _______________________________________________ > sword-devel mailing list: sword-devel@crosswire.org > http://www.crosswire.org/mailman/listinfo/sword-devel > Instructions to unsubscribe/change your settings at above page > > -- View this message in context: http://www.nabble.com/To-DM-and-Troy%3A-Questions-about-making-a-module-%2C-an-extract-byte-tf4324550.html#a12330316 Sent from the SWORD Dev mailing list archive at Nabble.com. _______________________________________________ sword-devel mailing list: sword-devel@crosswire.org http://www.crosswire.org/mailman/listinfo/sword-devel Instructions to unsubscribe/change your settings at above page
