Mercurial > prosody-modules
view mod_latex/mod_latex.lua @ 4942:e7b9bc629ecc
mod_rest: Add special handling to catch MAM results from remote hosts
Makes MAM queries to remote hosts works.
As the comment says, MAM results from users' local archives or local
MUCs are returned via origin.send() which is provided in the event and
thus already worked. Results from remote hosts go via normal stanza
routing and events, which need this extra handling to catch.
This pattern of iq-set, message+, iq-result is generally limited to MAM.
Closest similar thing might be MUC join, but to really handle that you
would need the webhook callback mechanism.
author | Kim Alvefur <zash@zash.se> |
---|---|
date | Mon, 16 May 2022 19:47:09 +0200 |
parents | df8da7e4c2bf |
children |
line wrap: on
line source
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);