rss feed from files

etherdump/commands/rss.py

@@ -1,7 +1,7 @@
 #!/usr/bin/env python
 from __future__ import print_function
 from argparse import ArgumentParser
-import sys, json, re, os
+import sys, json, re, os, urlparse
 from datetime import datetime
 from urllib import urlencode
 from urllib2 import HTTPError
@@ -36,6 +36,24 @@ def group (items, key=lambda x: x):
 def base (x):
     return re.sub(r"(\.raw\.html)|(\.diff\.html)|(\.meta\.json)|(\.raw\.txt)$", "", x)
 
+def excerpt (t, chars=25):
+    if len(t) > chars:
+        t = t[:chars] + "..."
+    return t
+
+def absurl (url, base=None):
+    if not url.startswith("http"):
+        return base + url
+    return url
+
+def url_base (url):
+    (scheme, netloc, path, params, query, fragment) = urlparse.urlparse(url)
+    path, _ = os.path.split(path.lstrip("/"))
+    ret = urlparse.urlunparse((scheme, netloc, path, None, None, None))
+    if ret:
+        ret += "/"
+    return ret
+
 def main (args):
     p = ArgumentParser("Check for pads that have changed since last sync (according to .meta.json)")
 
@@ -46,19 +64,24 @@ def main (args):
     p.add_argument("--zerorevs", default=False, action="store_true", help="include pads with zero revisions, default: False (i.e. pads with no revisions are skipped)")
 
     p.add_argument("--skip", default=None, type=int, help="skip this many items, default: None")
-    p.add_argument("--type", default="lastchanges", help="type of feed, default: lastchanges")
+    p.add_argument("--type", default="recentchanges", help="type of feed, default: recentchanges")
+
+    p.add_argument("--limit", type=int, default=10, help="number of items, default: 10")
+    p.add_argument("--chronological", default=False, action="store_true", help="order chronologically, default: False (reverse chrono)")
 
     p.add_argument("--title", default="etherpad", help="rss feed channel title, default: etherpad")
     p.add_argument("--description", default="", help="channel description, default: empty")
     p.add_argument("--language", default="en-US", help="feed language, default: en-US")
     p.add_argument("--updatePeriod", default="daily", help="updatePeriod, possible values: hourly, daily, weekly, monthly, yearly; default: daily")
     p.add_argument("--updateFrequency", default=1, type=int, help="update frequency within the update period (where 2 would mean twice per period); default: 1")
-    p.add_argument("--padurl", default=None, help="to use as channel link, default: padurl")
+    p.add_argument("--siteurl", default=None, help="to use as channel's site link, default: the etherpad url")
     p.add_argument("--feedurl", default="feed.xml", help="to use as feeds own (self) link, default: feed.xml")
     p.add_argument("--generator", default="https://gitlab.com/activearchives/etherdump", help="generator, default: https://gitlab.com/activearchives/etherdump")
-    p.add_argument("--itemlink", default="pad", help="item to link to in feed, possible values: pad, text, html, dhtml; default: pad")
 
-    p.add_argument("--chronological", default=False, action="store_true", help="order chronologically, default: False")
+    p.add_argument("--content", default=False, action="store_true", help="include content, default: False")
+    p.add_argument("--link", default="diffhtml,html,text", help="version to use as link, can be comma-delim list, use first avail, default: diffhtml,html,text")
+    p.add_argument("--linkbase", default=None, help="base url to use for links, default: try to use the feedurl")
+
     args = p.parse_args(args)
 
     tmpath = args.templates
@@ -68,6 +91,7 @@ def main (args):
         tmpath = os.path.join(tmpath, "data", "templates")
 
     env = Environment(loader=FileSystemLoader(tmpath))
+    env.filters["excerpt"] = excerpt
     template = env.get_template("rss.xml")
 
     info = loadpadinfo(args.padinfo)
@@ -97,10 +121,37 @@ def main (args):
     padurlbase = re.sub(r"api/1.2.9/$", "p/", info["apiurl"])
     if type(padurlbase) == unicode:
         padurlbase = padurlbase.encode("utf-8")
-    args.padurl = args.padurl or padurlbase
+    args.siteurl = args.siteurl or padurlbase
     args.utcnow = datetime.utcnow().strftime("%a, %d %b %Y %H:%M:%S +0000")
 
-    # from pprint import pprint
-    # pprint(inputs)
+    # order items & apply limit
+    args.pads.sort(key=lambda x: x.get("lastedited_iso"), reverse=not args.chronological)
+    if args.limit:
+        args.pads = args.pads[:args.limit]
+
+    # add versions_by_type, add in full text
+    # add link (based on args.link)
+    linkversions = args.link.split(",")
+    linkbase = args.linkbase or url_base(args.feedurl)
+    # print ("linkbase", linkbase, args.linkbase, args.feedurl)
+
+    for p in pads:
+        versions_by_type = {}
+        p["versions_by_type"] = versions_by_type
+        for v in p["versions"]:
+            t = v["type"]
+            versions_by_type[t] = v
+        with open (versions_by_type["text"]["path"]) as f:
+            p["text"] = f.read().decode("utf-8")
+
+        # ADD IN LINK
+        for v in linkversions:
+            vdata = versions_by_type[v]
+            try:
+                if v == "pad" or os.path.exists(vdata["path"]):
+                    p["link"] = absurl(vdata["url"], linkbase)
+                    break
+            except KeyError as e:
+                pass
 
     print (template.render(vars(args)).encode("utf-8"))

etherdump/data/templates/rss.xml

@@ -10,7 +10,7 @@
 <channel>
     <title>{{title}}</title>
     <atom:link href="{{feedurl}}" rel="self" type="application/rss+xml" />
-    <link>{{padurl}}</link>
+    <link>{{siteurl}}</link>
     <description>{{description}}</description>
     <lastBuildDate>{{utcnow}}</lastBuildDate>
     <language>{{language}}</language>
@@ -21,14 +21,13 @@
 {% for p in pads %}
     <item>
         <title>{{p.pad}}</title>
-        <link>{{p.versions[0].url}}</link>
+        <link>{{p.link}}</link>
         <pubDate>{{p.lastedited_822}}</pubDate>
-        <dc:creator><![CDATA[-]]></dc:creator>
-        <category><![CDATA[-]]></category>
-        <guid isPermaLink="false">{{p.versions[0].url}}</guid>
-        <description><![CDATA[{{p.description}}]]></description>
-        <content:encoded><![CDATA[{{p.content}}]]></content:encoded>
+        <guid isPermaLink="false">{{p.link}}</guid>
+        <description><![CDATA[{{p.text|excerpt(100)}}]]></description>
+        {% if content %}<content:encoded><![CDATA[{{p.text}}]]></content:encoded>{% endif %}
     </item>
 {% endfor %}
 
 </channel>
+</rss>