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mod_latex/mod_latex.lua @ 4935:a85efae90e21
mod_rest: Expand mapping of XEP-0045 join stanza
The previous 'join' mapping was apparently lost in translation when
swithing to datamapper, so might as well map some properties allowing
history control. Usually you probably want either zero history or
history since the last known time of being joined. Maybe that the former
should be the default?
author | Kim Alvefur <zash@zash.se> |
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date | Sat, 30 Apr 2022 01:00:01 +0200 |
parent | 1433:df8da7e4c2bf |
rev | line source |
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126
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mod_latex: New (well, kind of) module for rendering LaTeX in messages and replacing with a rendered embedded image
Matthew Wild <mwild1@gmail.com>
parents:
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1 local st = require "stanza"; |
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2 local urlencode = require "net.http".urlencode; |
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3 |
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4 local xmlns_xhtmlim = "http://jabber.org/protocol/xhtml-im"; |
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5 local xmlns_xhtml = "http://www.w3.org/1999/xhtml"; |
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6 |
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7 local function replace_latex(data) |
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8 local origin, stanza = data.origin, data.stanza; |
1432 | 9 local body = stanza:get_child_text("body"); |
10 if not body or not body:match("%$%$") then | |
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11 return; |
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12 end |
1433
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mod_latex: Log debug message when actually deciding to do LaTeX replacing
Kim Alvefur <zash@zash.se>
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1432
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13 module:log("debug", "Replacing latex..."); |
1343
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all the things: Remove trailing whitespace
Florian Zeitz <florob@babelmonkeys.de>
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14 |
126
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15 local html = st.stanza("html", { xmlns = xmlns_xhtmlim }) |
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16 :tag("body", { xmlns = xmlns_xhtml }); |
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17 |
126
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18 local in_latex, last_char; |
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19 for snippet, up_to in body:gmatch("(.-)%$%$()") do |
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20 last_char = up_to; |
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21 if in_latex then |
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22 -- Render latex and add image, next snippet is text |
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23 in_latex = nil; |
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24 html:tag("img", { src = "http://www.mathtran.org/cgi-bin/mathtran?D=2;tex="..urlencode(snippet), alt = snippet }):up(); |
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25 else |
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26 -- Add text to HTML, next snippet is latex |
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27 in_latex = true; |
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28 html:tag("span"):text(snippet):up(); |
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29 |
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30 end |
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31 end |
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parents:
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32 if last_char < #body then |
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33 html:tag("span"):text(body:sub(last_char, #body)):up(); |
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34 end |
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35 |
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36 for n, tag in ipairs(stanza.tags) do |
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Matthew Wild <mwild1@gmail.com>
parents:
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37 module:log("debug", "Tag: %s|%s", tag.attr.xmlns or "", tag.name or ""); |
e190c1643a8f
mod_latex: New (well, kind of) module for rendering LaTeX in messages and replacing with a rendered embedded image
Matthew Wild <mwild1@gmail.com>
parents:
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38 if tag.name == "html" and tag.attr.xmlns == xmlns_xhtmlim then |
e190c1643a8f
mod_latex: New (well, kind of) module for rendering LaTeX in messages and replacing with a rendered embedded image
Matthew Wild <mwild1@gmail.com>
parents:
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39 stanza.tags[n] = html; |
e190c1643a8f
mod_latex: New (well, kind of) module for rendering LaTeX in messages and replacing with a rendered embedded image
Matthew Wild <mwild1@gmail.com>
parents:
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40 for n, child in ipairs(stanza) do |
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Matthew Wild <mwild1@gmail.com>
parents:
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41 if child == tag then |
e190c1643a8f
mod_latex: New (well, kind of) module for rendering LaTeX in messages and replacing with a rendered embedded image
Matthew Wild <mwild1@gmail.com>
parents:
diff
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42 stanza[n] = html; |
e190c1643a8f
mod_latex: New (well, kind of) module for rendering LaTeX in messages and replacing with a rendered embedded image
Matthew Wild <mwild1@gmail.com>
parents:
diff
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43 end |
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Matthew Wild <mwild1@gmail.com>
parents:
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44 end |
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mod_latex: New (well, kind of) module for rendering LaTeX in messages and replacing with a rendered embedded image
Matthew Wild <mwild1@gmail.com>
parents:
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45 return; |
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Matthew Wild <mwild1@gmail.com>
parents:
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46 end |
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mod_latex: New (well, kind of) module for rendering LaTeX in messages and replacing with a rendered embedded image
Matthew Wild <mwild1@gmail.com>
parents:
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47 end |
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all the things: Remove trailing whitespace
Florian Zeitz <florob@babelmonkeys.de>
parents:
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48 |
126
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parents:
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49 stanza[#stanza+1] = html; |
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mod_latex: New (well, kind of) module for rendering LaTeX in messages and replacing with a rendered embedded image
Matthew Wild <mwild1@gmail.com>
parents:
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50 stanza.tags[#stanza.tags+1] = html; |
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Matthew Wild <mwild1@gmail.com>
parents:
diff
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51 end |
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Matthew Wild <mwild1@gmail.com>
parents:
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52 |
e190c1643a8f
mod_latex: New (well, kind of) module for rendering LaTeX in messages and replacing with a rendered embedded image
Matthew Wild <mwild1@gmail.com>
parents:
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53 module:hook("message/bare", replace_latex, 30); |
e190c1643a8f
mod_latex: New (well, kind of) module for rendering LaTeX in messages and replacing with a rendered embedded image
Matthew Wild <mwild1@gmail.com>
parents:
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54 module:hook("message/full", replace_latex, 30); |