El mar, 17-04-2018 a las 17:32 +0100, Adrian Perez de Castro escribió: > Hi all, > > On Tue, 17 Apr 2018 10:27:48 -0500, Michael Catanzaro <mcatanzaro@iga > lia.com> wrote: > > On Tue, Apr 17, 2018 at 10:19 AM, Carlos Garcia Campos > > <cgar...@igalia.com> wrote: > > > No, there isn't. You could use any javascript utility for that. > > > > In practice, I've failed to find any JavaScript syntax > > highlighting > > utility that can do this with acceptable performance. They all seem > > to > > require huge amounts of time to present the result, whereas > > WebCore > > used to be very quick. This is why Epiphany is still only capable > > of > > showing the page source in an external editor, like gedit. I think > > I > > tried Rainbow and Prism, and found web sources reporting that > > other > > comparable JS libraries are generally slower. > > > > I'm planning to just give up on syntax highlighting altogether in > > order > > to bring back internal view source mode, because the user > > experience > > with the external editor is very poor in flatpak. > > I did a small benchmark a while ago to help figure out which JS-based > highlighter to use: https://github.com/aperezdc/js-highlighters-shoot > out > > While they all are quite fast, CodeMirror is among the fastest but > Prism > (which Michael tried) is not to fast either. For some reason running > the > highlighter inside the browser turns out to be noticeably slower, but > we > never got to understand the root reason why (IIRC).
CodeMirror is what the web inspector uses, so we already have CodeMirror code in the library. Maybe we can add a builtin custom uri scheme using CodeMirror. > Something I have been wondering is whether the initial parsing of the > JS > code of the highlighter and (byte)code generation can be dominating > the > case when only one run of the highlighter is done. If that's the > case, > some way of having the highlighter JS code pre-compiled would > alleviate > (or completely solve) the problem. > > That all being said, I would rather have C/C++ code to do the job, > either in > WebKit or Epiphany (yes, we could even run the syntax highlighter in > the > WebExtension, or just pop up a new window/tab with a GtkSourceView > inside). > > Cheers, > > > -- > Adrián 🎩 > > _______________________________________________ > webkit-gtk mailing list > webkit-gtk@lists.webkit.org > https://lists.webkit.org/mailman/listinfo/webkit-gtk -- Carlos Garcia Campos http://pgp.rediris.es:11371/pks/lookup?op=get&search=0xF3D322D0EC4582C3
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