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annotate mod_pubsub_summary/mod_pubsub_summary.lua @ 5669:30f91daa40b4

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mod_storage_s3: Beginnings of an experimental S3 storage driver Tested against MinIO
author Kim Alvefur <zash@zash.se>
date Sat, 14 Oct 2023 17:31:06 +0200
parents 35085e0d52ad
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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3fe2c264aac4 mod_pubsub_summary: Mangle HTML payloads in Atom/RSS feeds
Kim Alvefur <zash@zash.se>
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diff changeset
1 -- No, not trying to parse HTML here. It's an illusion. Just trying to read RSS feeds.
3fe2c264aac4 mod_pubsub_summary: Mangle HTML payloads in Atom/RSS feeds
Kim Alvefur <zash@zash.se>
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2 --
3fe2c264aac4 mod_pubsub_summary: Mangle HTML payloads in Atom/RSS feeds
Kim Alvefur <zash@zash.se>
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3 -- Compose a textual representation of Atom payloads
3fe2c264aac4 mod_pubsub_summary: Mangle HTML payloads in Atom/RSS feeds
Kim Alvefur <zash@zash.se>
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4 module:hook("pubsub-summary/http://www.w3.org/2005/Atom", function (event)
3fe2c264aac4 mod_pubsub_summary: Mangle HTML payloads in Atom/RSS feeds
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5 local payload = event.payload;
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6 local title = payload:get_child_text("title");
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35085e0d52ad mod_pubsub_summary: Trim preceding and trailing whitespace from title
Kim Alvefur <zash@zash.se>
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7 if title then title = title:gsub("^%s+", ""):gsub("%s+$", ""); end
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a620bf249e63 mod_pubsub_summary: Explain why it picks content or summary in a comment
Kim Alvefur <zash@zash.se>
parents: 4426
diff changeset
8 -- Note: This prefers content over summary, it was made for a news feed where
a620bf249e63 mod_pubsub_summary: Explain why it picks content or summary in a comment
Kim Alvefur <zash@zash.se>
parents: 4426
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9 -- the interesting stuff was in the content and the summary was .. meh.
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3fe2c264aac4 mod_pubsub_summary: Mangle HTML payloads in Atom/RSS feeds
Kim Alvefur <zash@zash.se>
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10 local content_tag = payload:get_child("content") or payload:get_child("summary");
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86a97e7572b2 mod_pubsub_summary: Fix traceback when <content> not included
Kim Alvefur <zash@zash.se>
parents: 4438
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11 local content = content_tag and content_tag:get_text();
86a97e7572b2 mod_pubsub_summary: Fix traceback when <content> not included
Kim Alvefur <zash@zash.se>
parents: 4438
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12 if content and content_tag.attr.type == "html" then
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3fe2c264aac4 mod_pubsub_summary: Mangle HTML payloads in Atom/RSS feeds
Kim Alvefur <zash@zash.se>
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13 content = content:gsub("\n*<p[^>]*>\n*(.-)\n*</p>\n*", "%1\n\n");
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14 content = content:gsub("<li>(.-)</li>\n", "* %1\n");
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ade2064160e3 mod_pubsub_summary: Fix to not strip inline links
Kim Alvefur <zash@zash.se>
parents: 4507
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15 content = content:gsub("<a[^>]*href=[\"'](.-)[\"'][^>]*>(.-)</a>", "\1%1\2%2\3");
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3fe2c264aac4 mod_pubsub_summary: Mangle HTML payloads in Atom/RSS feeds
Kim Alvefur <zash@zash.se>
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16 content = content:gsub("<b>(.-)</b>", "*%1*");
3fe2c264aac4 mod_pubsub_summary: Mangle HTML payloads in Atom/RSS feeds
Kim Alvefur <zash@zash.se>
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17 content = content:gsub("<strong>(.-)</strong>", "*%1*");
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98864dffb231 mod_pubsub_summary: Fix conversion of emphasis _like this_ per XEP-0393
Kim Alvefur <zash@zash.se>
parents: 4513
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18 content = content:gsub("<em>(.-)</em>", "_%1_");
98864dffb231 mod_pubsub_summary: Fix conversion of emphasis _like this_ per XEP-0393
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parents: 4513
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19 content = content:gsub("<i>(.-)</i>", "_%1_");
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3fe2c264aac4 mod_pubsub_summary: Mangle HTML payloads in Atom/RSS feeds
Kim Alvefur <zash@zash.se>
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20 content = content:gsub("<img[^>]*src=[\"'](.-)[\"'][^>]*>", " %1 "); -- TODO alt= would have been nice to grab
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Kim Alvefur <zash@zash.se>
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21 content = content:gsub("<br[^>]*>", "\n");
3fe2c264aac4 mod_pubsub_summary: Mangle HTML payloads in Atom/RSS feeds
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22 content = content:gsub("<[^>]+>", "");
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ade2064160e3 mod_pubsub_summary: Fix to not strip inline links
Kim Alvefur <zash@zash.se>
parents: 4507
diff changeset
23 content = content:gsub("\1(.-)\2(.-)\3", "%2 <%1>");
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3fe2c264aac4 mod_pubsub_summary: Mangle HTML payloads in Atom/RSS feeds
Kim Alvefur <zash@zash.se>
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24 content = content:gsub("^%s*", ""):gsub("%s*$", "");
3fe2c264aac4 mod_pubsub_summary: Mangle HTML payloads in Atom/RSS feeds
Kim Alvefur <zash@zash.se>
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25 content = content:gsub("\n\n\n+", "\n\n");
3fe2c264aac4 mod_pubsub_summary: Mangle HTML payloads in Atom/RSS feeds
Kim Alvefur <zash@zash.se>
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26 content = content:gsub("&(%w+);", {
3fe2c264aac4 mod_pubsub_summary: Mangle HTML payloads in Atom/RSS feeds
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27 apos = "'";
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28 quot = '"';
3fe2c264aac4 mod_pubsub_summary: Mangle HTML payloads in Atom/RSS feeds
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29 lt = "<";
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30 gt = ">";
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31 amp = "&";
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fcfe691d6322 mod_pubsub_summary: Use pre-escaped UTF-8 sequence for compat
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parents: 4600
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32 nbsp = "\194\160"; -- U+00A0
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33 });
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34 end
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Kim Alvefur <zash@zash.se>
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35 local summary;
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09657f758f53 mod_pubsub_summary: Skip adding title if already part of summary
Kim Alvefur <zash@zash.se>
parents: 4436
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36 if title and content and content:sub(1, #title) ~= title then
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2bb11055e4bb mod_pubsub_summary: Make titles *bold* to stand out more
Kim Alvefur <zash@zash.se>
parents: 4437
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37 summary = "*" .. title .. "*\n\n" .. content;
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3fe2c264aac4 mod_pubsub_summary: Mangle HTML payloads in Atom/RSS feeds
Kim Alvefur <zash@zash.se>
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38 elseif title or content then
3fe2c264aac4 mod_pubsub_summary: Mangle HTML payloads in Atom/RSS feeds
Kim Alvefur <zash@zash.se>
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39 summary = content or title;
3fe2c264aac4 mod_pubsub_summary: Mangle HTML payloads in Atom/RSS feeds
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40 end
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07529dba102d mod_pubsub_summary: Include multiple links (e.g. podcast media)
Kim Alvefur <zash@zash.se>
parents: 4435
diff changeset
41 for link in payload:childtags("link") do
07529dba102d mod_pubsub_summary: Include multiple links (e.g. podcast media)
Kim Alvefur <zash@zash.se>
parents: 4435
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42 if link and link.attr.href and link.attr.href ~= content then
07529dba102d mod_pubsub_summary: Include multiple links (e.g. podcast media)
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parents: 4435
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43 summary = (summary and summary .. "\n" or "") .. link.attr.href;
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cde38b7de04a mod_pubsub_summary: Hide link relation when value is "alternate"
Kim Alvefur <zash@zash.se>
parents: 4609
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44 if link.attr.rel and link.attr.rel ~= "alternate" then summary = summary .. " [" .. link.attr.rel .. "]" end
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07529dba102d mod_pubsub_summary: Include multiple links (e.g. podcast media)
Kim Alvefur <zash@zash.se>
parents: 4435
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45 end
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3fe2c264aac4 mod_pubsub_summary: Mangle HTML payloads in Atom/RSS feeds
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46 end
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82e7251d4f52 mod_pubsub_summary: Render geo:-URI from OASIS emergency broadcasts
Kim Alvefur <zash@zash.se>
parents: 5129
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47 for area in payload:childtags("area", "urn:oasis:names:tc:emergency:cap:1.2") do
82e7251d4f52 mod_pubsub_summary: Render geo:-URI from OASIS emergency broadcasts
Kim Alvefur <zash@zash.se>
parents: 5129
diff changeset
48 local pos = area:get_child_text("circle");
82e7251d4f52 mod_pubsub_summary: Render geo:-URI from OASIS emergency broadcasts
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parents: 5129
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49 if pos then
82e7251d4f52 mod_pubsub_summary: Render geo:-URI from OASIS emergency broadcasts
Kim Alvefur <zash@zash.se>
parents: 5129
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50 summary = summary .. "\n" .. "geo:"..pos:match("[%d.,]+");
82e7251d4f52 mod_pubsub_summary: Render geo:-URI from OASIS emergency broadcasts
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parents: 5129
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51 end
82e7251d4f52 mod_pubsub_summary: Render geo:-URI from OASIS emergency broadcasts
Kim Alvefur <zash@zash.se>
parents: 5129
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52 end
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3fe2c264aac4 mod_pubsub_summary: Mangle HTML payloads in Atom/RSS feeds
Kim Alvefur <zash@zash.se>
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53 return summary;
3fe2c264aac4 mod_pubsub_summary: Mangle HTML payloads in Atom/RSS feeds
Kim Alvefur <zash@zash.se>
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54 end, 1);