Mercurial > prosody-modules
annotate mod_pubsub_feeds/feeds.lib.lua @ 2899:0273d7583373
mod_cache_c2s_caps: New module caching capabilities from local clients
author | Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> |
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date | Wed, 07 Mar 2018 17:11:12 +0100 |
parents | 649f733aa3dc |
children | c402b273f2e3 |
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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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10 |
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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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14 |
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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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20 |
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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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24 |
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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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28 |
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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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32 |
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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 } |