On Tue, Jan 5, 2021 at 1:19 AM Pavel Sanda <sa...@lyx.org> wrote: > On Mon, Jan 04, 2021 at 09:48:42PM +0100, Thibaut Cuvelier wrote: > > There are multiple issues here. What is needed to generate HTML and > DocBook > > is a simple SAX writer, not a parser. I've done plenty of research about > > it, there's no XML library that does that. Most of them are using a DOM, > > which is a total waste of memory for such an application: it stores a > > complete XML tree in memory before serialising it. With SAX, you just > need > > a string backend, which is much more lightweight (by several factors). > > After little bit more thinking, is using DOM actually that big issue? > I mean how much it takes - for document of length n its O(n) in space? > > Sure, it might be cut to constant, but practically speaking when you have > 100 pages document what is the real time/memory consumption. Timewise > you spent 1s in XML compared to next 30s in conversion figures to pdf or > whatever format? Spacewise probably one more time than what we > already allocated for document itself. > > If using more heavy-weight caliber xml lib is not pain from API point > of view (and I do not know, you are the expert here) then we might > actually consider it, given the difficulties in SAX space? >
I had a similar thought and will note that I've had good success on other projects with pugixml. Regards, Joel
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