Software /
code /
prosody
File
util/xtemplate.lua @ 13014:06453c564141
util.startup: Add prosody.started promise to easily execute code after startup
To avoid a race where server-started fires before the promise function body is
run (on next tick), I moved server-started to fire on the next tick, which
seems sensible anyway.
Errors are logged, I'm not sure if we ought to be doing something more here.
I'm sure we'll find out.
author | Matthew Wild <mwild1@gmail.com> |
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date | Sat, 01 Apr 2023 11:56:38 +0100 |
parent | 12975:d10957394a3c |
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local s_gsub = string.gsub; local s_match = string.match; local s_sub = string.sub; local t_concat = table.concat; local st = require("prosody.util.stanza"); local function render(template, root, escape, filters) escape = escape or st.xml_escape; return (s_gsub(template, "%b{}", function(block) local inner = s_sub(block, 2, -2); local path, pipe, pos = s_match(inner, "^([^|]+)(|?)()"); if not (type(path) == "string") then return end local value if path == "." then value = root; elseif path == "#" then value = root:get_text(); else value = root:find(path); end local is_escaped = false; while pipe == "|" do local func, args, tmpl, p = s_match(inner, "^(%w+)(%b())(%b{})()", pos); if not func then func, args, p = s_match(inner, "^(%w+)(%b())()", pos); end if not func then func, tmpl, p = s_match(inner, "^(%w+)(%b{})()", pos); end if not func then func, p = s_match(inner, "^(%w+)()", pos); end if not func then break end if tmpl then tmpl = s_sub(tmpl, 2, -2); end if args then args = s_sub(args, 2, -2); end if func == "each" and tmpl and st.is_stanza(value) then if not args then value, args = root, path; end local ns, name = s_match(args, "^(%b{})(.*)$"); if ns then ns = s_sub(ns, 2, -2); else name, ns = args, nil; end if ns == "" then ns = nil; end if name == "" then name = nil; end local out, i = {}, 1; for c in (value):childtags(name, ns) do out[i], i = render(tmpl, c, escape, filters), i + 1; end value = t_concat(out); is_escaped = true; elseif func == "and" and tmpl then local condition = value; if args then condition = root:find(args); end if condition then value = render(tmpl, root, escape, filters); is_escaped = true; end elseif func == "or" and tmpl then local condition = value; if args then condition = root:find(args); end if not condition then value = render(tmpl, root, escape, filters); is_escaped = true; end elseif filters and filters[func] then local f = filters[func]; if args == nil then value, is_escaped = f(value, tmpl); else value, is_escaped = f(args, value, tmpl); end else error("No such filter function: " .. func); end pipe, pos = s_match(inner, "^(|?)()", p); end if type(value) == "string" then if not is_escaped then value = escape(value); end return value elseif st.is_stanza(value) then value = value:get_text(); if value then return escape(value) end end return "" end)) end return { render = render }