--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/mod_pubsub_summary/mod_pubsub_summary.lua Thu Feb 04 01:12:41 2021 +0100
@@ -0,0 +1,42 @@
+-- No, not trying to parse HTML here. It's an illusion. Just trying to read RSS feeds.
+--
+-- Compose a textual representation of Atom payloads
+module:hook("pubsub-summary/http://www.w3.org/2005/Atom", function (event)
+ local payload = event.payload;
+ local title = payload:get_child_text("title");
+ local content_tag = payload:get_child("content") or payload:get_child("summary");
+ local content = content_tag:get_text();
+ if content_tag.attr.type == "html" then
+ content = content:gsub("\n*<p[^>]*>\n*(.-)\n*</p>\n*", "%1\n\n");
+ content = content:gsub("<li>(.-)</li>\n", "* %1\n");
+ content = content:gsub("<a[^>]*href=[\"'](.-)[\"'][^>]*>(.-)</a>", "%2 <%1>");
+ content = content:gsub("<b>(.-)</b>", "*%1*");
+ content = content:gsub("<strong>(.-)</strong>", "*%1*");
+ content = content:gsub("<em>(.-)</em>", "*%1*");
+ content = content:gsub("<i>(.-)</i>", "*%1*");
+ content = content:gsub("<img[^>]*src=[\"'](.-)[\"'][^>]*>", " %1 "); -- TODO alt= would have been nice to grab
+ content = content:gsub("<br[^>]*>", "\n");
+ content = content:gsub("<[^>]+>", "");
+ content = content:gsub("^%s*", ""):gsub("%s*$", "");
+ content = content:gsub("\n\n\n+", "\n\n");
+ content = content:gsub("&(%w+);", {
+ apos = "'";
+ quot = '"';
+ lt = "<";
+ gt = ">";
+ amp = "&";
+ nbsp = utf8 and utf8.char(0xa0) or " ";
+ });
+ end
+ local link = payload:get_child("link");
+ local summary;
+ if title and content then
+ summary = title .. "\n\n" .. content;
+ elseif title or content then
+ summary = content or title;
+ end
+ if link and link.attr.href and link.attr.href ~= content then
+ summary = (summary and summary .. "\n" or "") .. link.attr.href;
+ end
+ return summary;
+end, 1);