applications/luci-app-freifunk-widgets/luasrc/view/freifunk/widgets/rssfeed/main.htm

   1 <%
   2 --[[
   3 LuCI - Lua Configuration Interface
   4
   5 Copyright 2012 Manuel Munz <freifunk at somakoma dot de>
   6
   7 Licensed under the Apache License, Version 2.0 (the "License");
   8 you may not use this file except in compliance with the License.
   9 You may obtain a copy of the License at
  10
  11         http://www.apache.org/licenses/LICENSE-2.0
  12
  13 ]]--
  14
  15 local sys = require "luci.sys"
  16 local utl = require "luci.util"
  17 local fs = require "nixio.fs"
  18 local i18n = require "luci.i18n"
  19 local url = data.url
  20 local title = data.title or i18n.translate("RSS")
  21 local max = tonumber(data.max) or 10
  22 local rss
  23 local pr = data.paddingright or "0"
  24 local output = {}
  25 local width = data.width or "100%"
  26 if type(width) == "number" then
  27         width = width .. "px"
  28 end
  29 local name = data['.name']
  30 local cachetime = tonumber(data.cache) or 3600
  31 cachefile = "/tmp/" .. name .. ".cache"
  32 %>
  33 <div id="<%=name%>" style="width:<%=width%>;float:left">
  34         <div style="padding-right: <%=pr%>">
  35         <h2><%=title%></h2>
  36
  37         <% if not url then %>
  38                 <%:No url found in config%>
  39         <% else
  40                 local mtime = fs.stat(cachefile, "mtime") or 0
  41                 local now = os.time()
  42                 expire = mtime + cachetime
  43
  44                 if not fs.access(cachefile) or expire < now then
  45                         rss = sys.httpget(url)
  46                         if #rss == 0 then
  47         %>
  48                         <%:Could not get rss data from%> <a href="<%=url%>"><%=url%></a>
  49         <%
  50                         else
  51                                 local count = 0
  52                                 for item in string.gmatch(rss, "<item>(.-)</item>") do
  53                                         if count < max then
  54                                                 local title = item:match("<title>(.-)</title>")
  55                                                 local link = item:match("<link>(.-)</link>")
  56                                                 local desc = item:match("<description>(.-)</description>") or ""
  57                                                 if title and link then
  58                                                         table.insert(output, { title = utl.pcdata(title), link = utl.pcdata(link) })
  59                                                 end
  60                                                 count = count + 1
  61                                         end
  62                                 end
  63                                 if count > 0 then
  64                                         local file = io.open(cachefile, "w")
  65                                         file:write(utl.serialize_data(output))
  66                                         file:close()
  67                                 end
  68                         end
  69                 else
  70                         local file = assert(io.open(cachefile))
  71                         output = utl.restore_data(file:read'*a')
  72                 end
  73         end
  74
  75         if #output > 0 then
  76         %>
  77                 <ul>
  78                 <% for k, v in ipairs(output) do %>
  79                         <li><a href="<%=v.link%>"><%=v.title%></a></li>
  80                 <% end %>
  81                 </ul>
  82         <%end%>
  83         </div>
  84 </div>