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"Reynolds, Gregg" <greynolds@datalogics.com> writes: > SAX interface to xml docs I do not know of a SAX interface, or even something like it, but there is a port of sdc, which has an ESIS compiler(nsgmls output). sdc was written by Joerg Wittenberger for bigloo originally. I ported it to guile a month or more ago. It's not a complete port(like one or two of the backends isn't working), but it's good enough that I had forgotten I was using the guile port instead of the real thing for the last month or so. sdc is a full SGML publishing system with it's own DTDs and more than half a dozen backends. It's also GPLed, yahoo! The compiler in the guile port was broken out by me into a separate module, and sdc rebuilt on top of it. It might be useful for someone whose hankering for a SAX interface. > interactive tree walker/tree query engine for cruising around > xml docs sdc has a recursive descent parser that works on the token stream representations of documents it creates from the ESIS output. It uses this as the basis for all of it's output generation, including normalization. The rdp in the guile port is also broken out as a separate module and might be useful to someone wanting to hop around tokenized streams of xml, or whatever. Both the compiler and the rdp could stand better interfaces and more documentation, as always. > tree transformation operators of some kind, as found in XSL and > other xml query languages floating around currently (see > http:www.w3.org) That, it does not really have, because sdc never makes a static object tree representation of the XML, like DOM and most other tools from the Java side of the world. I've built a couple of little dohickeys to smack onto an ESIS tokenizer and build object trees, but after all this time I get sick and tired of playing lite-brite and calling all the little pretty methods. After awhile you start thinking all the world is just one big acyclic graph and your tottering around with your Iterators and your Visitors and Visitees, calling this and that on an object, talking to it's parents, fondling it's children... oh sorry, flashback. > I think James Clarks' "expat" parser would go well with guile, but its > licensed under the Mozilla license. Is such stuff usable in free > software? I nsgmls the nsgmls interface because nsgmls is free as can be, and handles both SGML and xml beautifully. It's also the base of so many other SGML/xml tools that nearly 100% of the SGML/xml parsing done at our office is using it somehow, so that makes for nice compatibility. Here is the url for the port: http://www.red-bean.com/~craig/sdc-guile -- Craig Brozefsky craig@onshore.com onShore Inc. http://www.onshore.com/~craig Programmer loitering on the edge