prosody-modules
5bfb2ccab2ab
mod_pubsub_feeds/feeds.lib.lua

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mod_pubsub_feeds/feeds.lib.lua @ 2387:5bfb2ccab2ab

mod_firewall: README: Add more info about specifying rule set files
author Matthew Wild <mwild1@gmail.com>
date Sat, 19 Nov 2016 15:59:31 +0000
parent 2378:649f733aa3dc
child 4427:c402b273f2e3
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b149ea428b81 mod_pubsub_feeds: Switch to use util.xml for parsing feeds and include RSS to Atom translation code from lua-feeds
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1 local st = require "util.stanza";
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2 -- RSS->Atom translator
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3 -- http://code.matthewwild.co.uk/lua-feeds/
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4
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5 -- Helpers to translate item child elements
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6 local rss2atom = {};
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7 function rss2atom.title(atom_entry, tag)
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8 atom_entry:tag("title"):text(tag:get_text()):up();
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9 end
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11 function rss2atom.link(atom_entry, tag)
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12 atom_entry:tag("link", { href = tag:get_text() }):up();
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13 end
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15 function rss2atom.author(atom_entry, tag)
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16 atom_entry:tag("author")
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17 :tag("email"):text(tag:get_text()):up()
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18 :up();
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19 end
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21 function rss2atom.guid(atom_entry, tag)
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22 atom_entry:tag("id"):text(tag:get_text()):up();
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23 end
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25 function rss2atom.category(atom_entry, tag)
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26 atom_entry:tag("category", { term = tag:get_text(), scheme = tag.attr.domain }):up();
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27 end
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29 function rss2atom.description(atom_entry, tag)
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30 atom_entry:tag("summary"):text(tag:get_text()):up();
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31 end
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33 local months = {
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34 jan = "01", feb = "02", mar = "03", apr = "04", may = "05", jun = "06";
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35 jul = "07", aug = "08", sep = "09", oct = "10", nov = "11", dec = "12";
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36 };
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37
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38 function rss2atom.pubDate(atom_entry, tag)
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39 local pubdate = tag:get_text():gsub("^%a+,", ""):gsub("^%s*", "");
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40 local date, month, year, hour, minute, second, zone =
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41 pubdate:match("^(%d%d?) (%a+) (%d+) (%d+):(%d+):?(%d*) ?(.*)$");
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42 if not date then return; end
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43 if #date == 1 then
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44 date = "0"..date;
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45 end
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46 month = months[month:sub(1,3):lower()];
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47 if #year == 2 then -- GAH!
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48 if tonumber(year) > 80 then
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49 year = "19"..year;
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50 else
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51 year = "20"..year;
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52 end
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53 end
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54 if zone == "UT" or zone == "GMT" then zone = "Z"; end
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55 if #second == 0 then
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56 second = "00";
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57 end
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58 local date_string = string.format("%s-%s-%sT%s:%s:%s%s", year, month, date, hour, minute, second, zone);
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59 atom_entry:tag("published"):text(date_string):up();
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60 end
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61
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62 -- Translate a single item to atom
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63 local function translate_rss(rss_feed)
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64 local feed = st.stanza("feed", { xmlns = "http://www.w3.org/2005/Atom" });
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65 local channel = rss_feed:get_child("channel");
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66 -- TODO channel properties
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67 for item in channel:childtags("item") do
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68 feed:tag("entry");
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69 for tag in item:childtags() do
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70 local translator = rss2atom[tag.name];
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71 if translator then
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72 translator(feed, tag);
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73 end
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74 end
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75 feed:reset();
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76 end
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77 return feed;
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78 end
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79
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80 return { translate_rss = translate_rss }