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mod_latex/mod_latex.lua @ 4565:3b2ae854842c
mod_muc_bot: Save occupant to room
This has some side-effects:
Firstly, the bot shows up in occupant list, which is nice. Secondly, the
bot starts receiving messages from the room which might be wanted, but
it would be better to join the room for real in this case.
author | Kim Alvefur <zash@zash.se> |
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date | Sat, 10 Apr 2021 19:23:25 +0200 |
parent | 1433:df8da7e4c2bf |
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local st = require "stanza"; local urlencode = require "net.http".urlencode; local xmlns_xhtmlim = "http://jabber.org/protocol/xhtml-im"; local xmlns_xhtml = "http://www.w3.org/1999/xhtml"; local function replace_latex(data) local origin, stanza = data.origin, data.stanza; local body = stanza:get_child_text("body"); if not body or not body:match("%$%$") then return; end module:log("debug", "Replacing latex..."); local html = st.stanza("html", { xmlns = xmlns_xhtmlim }) :tag("body", { xmlns = xmlns_xhtml }); local in_latex, last_char; for snippet, up_to in body:gmatch("(.-)%$%$()") do last_char = up_to; if in_latex then -- Render latex and add image, next snippet is text in_latex = nil; html:tag("img", { src = "http://www.mathtran.org/cgi-bin/mathtran?D=2;tex="..urlencode(snippet), alt = snippet }):up(); else -- Add text to HTML, next snippet is latex in_latex = true; html:tag("span"):text(snippet):up(); end end if last_char < #body then html:tag("span"):text(body:sub(last_char, #body)):up(); end for n, tag in ipairs(stanza.tags) do module:log("debug", "Tag: %s|%s", tag.attr.xmlns or "", tag.name or ""); if tag.name == "html" and tag.attr.xmlns == xmlns_xhtmlim then stanza.tags[n] = html; for n, child in ipairs(stanza) do if child == tag then stanza[n] = html; end end return; end end stanza[#stanza+1] = html; stanza.tags[#stanza.tags+1] = html; end module:hook("message/bare", replace_latex, 30); module:hook("message/full", replace_latex, 30);