index.Html: fix meta tag

Include tags, better CSS

README.md

@@ -55,7 +55,9 @@ You do need:
 
 Simplest way to get these:
 
-	pip install -r requirements.txt
+```shell
+pip install -r requirements.txt
+```
 
 You may also need:
 
@@ -158,8 +160,12 @@ You can change the port and the location of the `www/` folder like this `python
 
 #### Passing arguments
 
-Then visit: **`http://PATH/TO/MORSS/[main.py/][:argwithoutvalue[:argwithvalue=value[...]]]/FEEDURL`**  
+Then visit:
+```
+http://PATH/TO/MORSS/[main.py/][:argwithoutvalue[:argwithvalue=value[...]]]/FEEDURL
+```
 For example: `http://morss.example/:clip/https://twitter.com/pictuga`
+
 *(Brackets indicate optional text)*
 
 The `main.py` part is only needed if your server doesn't support the Apache redirect rule set in the provided `.htaccess`.
@@ -168,8 +174,12 @@ Works like a charm with [Tiny Tiny RSS](http://tt-rss.org/redmine/projects/tt-rs
 
 ### As a CLI application
 
-Run: **`python[2.7] -m morss [argwithoutvalue] [argwithvalue=value] [...] FEEDURL`**  
+Run:
+```
+python[2.7] -m morss [argwithoutvalue] [argwithvalue=value] [...] FEEDURL
+```
 For example: `python -m morss debug http://feeds.bbci.co.uk/news/rss.xml`
+
 *(Brackets indicate optional text)*
 
 ### As a newsreader hook
@@ -179,8 +189,12 @@ To use it, the newsreader [Liferea](http://lzone.de/liferea/) is required
 scripts can be run on top of the RSS feed, using its
 [output](http://lzone.de/liferea/scraping.htm) as an RSS feed.
 
-To use this script, you have to enable "(Unix) command" in liferea feed settings, and use the command: **`[python2.7] PATH/TO/MORSS/main.py [argwithoutvalue] [argwithvalue=value] [...] FEEDURL`**  
+To use this script, you have to enable "(Unix) command" in liferea feed settings, and use the command:
+```
+[python[2.7]] PATH/TO/MORSS/main.py [argwithoutvalue] [argwithvalue=value] [...] FEEDURL
+```
 For example: `python2.7 PATH/TO/MORSS/main.py http://feeds.bbci.co.uk/news/rss.xml`
+
 *(Brackets indicate optional text)*
 
 ### As a python library

morss/feeds.py

@@ -21,12 +21,10 @@ json.encoder.c_make_encoder = None
 try:
     # python 2
     from StringIO import StringIO
-    from urllib2 import urlopen
     from ConfigParser import RawConfigParser
 except ImportError:
     # python 3
     from io import StringIO
-    from urllib.request import urlopen
     from configparser import RawConfigParser
 
 try:
@@ -164,7 +162,7 @@ class ParserBase(object):
         return self.convert(FeedHTML).tostring(**k)
 
     def convert(self, TargetParser):
-        if isinstance(self, TargetParser):
+        if type(self) == TargetParser:
             return self
 
         target = TargetParser()
@@ -208,11 +206,11 @@ class ParserBase(object):
         pass
 
     def rule_remove(self, rule):
-        # remove node from its parent
+        # remove node from its parent. Returns nothing
         pass
 
     def rule_set(self, rule, value):
-        # value is always a str?
+        # set the value. Returns nothing
         pass
 
     def rule_str(self, rule):
@@ -247,25 +245,30 @@ class ParserBase(object):
 
         return self.rule_search_all(self.rules[rule_name])
 
-    def get_str(self, rule_name):
+    def get(self, rule_name):
         # simple function to get nice text from the rule name
-        # for use in @property, ie. self.get_str('title')
+        # for use in @property, ie. self.get('title')
         if rule_name not in self.rules:
             return None
 
-        return self.rule_str(self.rules[rule_name])
+        return self.rule_str(self.rules[rule_name]) or None
 
-    def set_str(self, rule_name, value):
+    def set(self, rule_name, value):
+        # simple function to set nice text from the rule name. Returns nothing
         if rule_name not in self.rules:
-            return None
+            return
+
+        if value is None:
+            self.rmv(rule_name)
+            return
 
         try:
-            return self.rule_set(self.rules[rule_name], value)
+            self.rule_set(self.rules[rule_name], value)
 
         except AttributeError:
             # does not exist, have to create it
             self.rule_create(self.rules[rule_name])
-            return self.rule_set(self.rules[rule_name], value)
+            self.rule_set(self.rules[rule_name], value)
 
     def rmv(self, rule_name):
         # easy deleter
@@ -291,7 +294,7 @@ class ParserXML(ParserBase):
         'rssfake': 'http://purl.org/rss/1.0/'}
 
     def parse(self, raw):
-        parser = etree.XMLParser(recover=True)
+        parser = etree.XMLParser(recover=True, remove_blank_text=True, remove_pis=True) # remove_blank_text needed for pretty_print
         return etree.fromstring(raw, parser)
 
     def remove(self):
@@ -369,10 +372,6 @@ class ParserXML(ParserBase):
             match.getparent().append(element)
             return element
 
-        # try duplicating from template
-        # FIXME
-        # >>> self.xml.getroottree().getpath(ff.find('a'))
-
         return None
 
     def rule_remove(self, rule):
@@ -432,7 +431,7 @@ class ParserXML(ParserBase):
                 return etree.tostring(match, method='text', encoding='unicode').strip()
 
         else:
-            return match or ""
+            return match # might be None is no match
 
 
 class ParserHTML(ParserXML):
@@ -441,7 +440,8 @@ class ParserHTML(ParserXML):
     mimetype = ['text/html', 'application/xhtml+xml']
 
     def parse(self, raw):
-        return lxml.html.fromstring(raw)
+        parser = etree.HTMLParser(remove_blank_text=True) # remove_blank_text needed for pretty_print
+        return etree.fromstring(raw, parser)
 
     def tostring(self, encoding='unicode', **k):
         return lxml.html.tostring(self.root, encoding=encoding, **k)
@@ -467,11 +467,12 @@ class ParserHTML(ParserXML):
             element = deepcopy(match)
             match.getparent().append(element)
 
-    # TODO def rule_set for the html part
-
 
 def parse_time(value):
-    if isinstance(value, basestring):
+    if value is None or value == 0:
+        return None
+
+    elif isinstance(value, basestring):
         if re.match(r'^[0-9]+$', value):
             return datetime.fromtimestamp(int(value), tz.UTC)
 
@@ -483,8 +484,9 @@ def parse_time(value):
 
     elif isinstance(value, datetime):
         return value
+
     else:
-        return False
+        return None
 
 
 class ParserJSON(ParserBase):
@@ -496,8 +498,9 @@ class ParserJSON(ParserBase):
         return json.loads(raw)
 
     def remove(self):
-        # delete oneself FIXME
-        pass
+        # impossible to "delete" oneself per se but can clear all its items
+        for attr in self.root:
+            del self.root[attr]
 
     def tostring(self, encoding='unicode', **k):
         dump = json.dumps(self.root, ensure_ascii=False, **k) # ensure_ascii = False to have proper (unicode) string and not \u00
@@ -557,11 +560,16 @@ class ParserJSON(ParserBase):
         rrule = self._rule_parse(rule)
         cur = self.root
 
+        try:
             for node in rrule[:-1]:
                 cur = cur[node]
 
             del cur[rrule[-1]]
 
+        except KeyError:
+            # nothing to delete
+            pass
+
     def rule_set(self, rule, value):
         if '[]' in rule:
             raise ValueError('not supported') # FIXME
@@ -608,12 +616,12 @@ class Feed(object):
         return [itemsClass(x, self.rules, self) for x in items]
 
     title = property(
-        lambda f:   f.get_str('title'),
-        lambda f,x: f.set_str('title', x),
+        lambda f:   f.get('title'),
+        lambda f,x: f.set('title', x),
         lambda f:   f.rmv('title') )
     description = desc = property(
-        lambda f:   f.get_str('desc'),
-        lambda f,x: f.set_str('desc', x),
+        lambda f:   f.get('desc'),
+        lambda f,x: f.set('desc', x),
         lambda f:   f.rmv('desc') )
     items = property(
         lambda f:   f )
@@ -660,28 +668,28 @@ class Item(Uniq):
         return id(xml)
 
     title = property(
-        lambda f:   f.get_str('item_title'),
-        lambda f,x: f.set_str('item_title', x),
+        lambda f:   f.get('item_title'),
+        lambda f,x: f.set('item_title', x),
         lambda f:   f.rmv('item_title') )
     link = property(
-        lambda f:   f.get_str('item_link'),
-        lambda f,x: f.set_str('item_link', x),
+        lambda f:   f.get('item_link'),
+        lambda f,x: f.set('item_link', x),
         lambda f:   f.rmv('item_link') )
     description = desc = property(
-        lambda f:   f.get_str('item_desc'),
-        lambda f,x: f.set_str('item_desc', x),
+        lambda f:   f.get('item_desc'),
+        lambda f,x: f.set('item_desc', x),
         lambda f:   f.rmv('item_desc') )
     content = property(
-        lambda f:   f.get_str('item_content'),
-        lambda f,x: f.set_str('item_content', x),
+        lambda f:   f.get('item_content'),
+        lambda f,x: f.set('item_content', x),
         lambda f:   f.rmv('item_content') )
     time = property(
-        lambda f:   f.time_prs(f.get_str('item_time')),
-        lambda f,x: f.set_str('item_time', f.time_fmt(x)),
+        lambda f:   f.time_prs(f.get('item_time')),
+        lambda f,x: f.set('item_time', f.time_fmt(x)),
         lambda f:   f.rmv('item_time') )
     updated = property(
-        lambda f:   f.time_prs(f.get_str('item_updated')),
-        lambda f,x: f.set_str('item_updated', f.time_fmt(x)),
+        lambda f:   f.time_prs(f.get('item_updated')),
+        lambda f,x: f.set('item_updated', f.time_fmt(x)),
         lambda f:   f.rmv('item_updated') )
 
 
@@ -690,6 +698,10 @@ class FeedXML(Feed, ParserXML):
 
     def tostring(self, encoding='unicode', **k):
         # override needed due to "getroottree" inclusion
+
+        if self.root.getprevious() is None:
+            self.root.addprevious(etree.PI('xml-stylesheet', 'type="text/xsl" href="/sheet.xsl"'))
+
         return etree.tostring(self.root.getroottree(), encoding=encoding, **k)
 
 

morss/morss.py

@@ -204,7 +204,7 @@ def ItemFill(item, options, feedurl='/', fast=False):
 
     # twitter
     if urlparse(feedurl).netloc == 'twitter.com':
-        match = lxml.html.fromstring(item.content).xpath('//a/@data-expanded-url')
+        match = lxml.html.fromstring(item.desc).xpath('//a/@data-expanded-url')
         if len(match):
             link = match[0]
             log(link)
@@ -341,6 +341,8 @@ def FeedFetch(url, options):
     else:
         try:
             rss = feeds.parse(xml, url, contenttype)
+            rss = rss.convert(feeds.FeedXML)
+                # contains all fields, otherwise much-needed data can be lost
 
         except TypeError:
             log('random page')
@@ -435,8 +437,10 @@ def FeedFormat(rss, options):
     if options.callback:
         if re.match(r'^[a-zA-Z0-9\.]+$', options.callback) is not None:
             return '%s(%s)' % (options.callback, rss.tojson())
+
         else:
             raise MorssException('Invalid callback var name')
+
     elif options.json:
         if options.indent:
             return rss.tojson(encoding='UTF-8', indent=4)
@@ -448,6 +452,10 @@ def FeedFormat(rss, options):
         return rss.tocsv(encoding='UTF-8')
 
     elif options.reader:
+        if options.indent:
+            return rss.tohtml(encoding='UTF-8', pretty_print=True)
+
+        else:
             return rss.tohtml(encoding='UTF-8')
 
     else:

www/index.html

@@ -2,7 +2,7 @@
 <html>
 	<head>
 		<title>morss</title>
-		<meta name="viewport" content="width=device-width; initial-scale=1.0; maximum-scale=1.0;">
+		<meta name="viewport" content="width=device-width; initial-scale=1.0; maximum-scale=1.0;" />
 		<meta charset="UTF-8" />
 		<style type="text/css">
 			body

www/sheet.xsl

@@ -0,0 +1,122 @@
+<?xml version="1.0" encoding="utf-8"?>
+<xsl:stylesheet version="1.1" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
+
+	<xsl:output method="html"/>
+
+	<xsl:template match="/">
+		<html>
+		<head>
+			<title>RSS feed by morss</title>
+			<meta name="viewport" content="width=device-width; initial-scale=1.0; maximum-scale=1.0;" />
+
+			<style type="text/css">
+				body {
+					overflow-wrap: anywhere;
+					word-wrap: anywhere;
+				}
+
+				#url {
+					background-color: rgba(255, 165, 0, 0.25);
+					padding: 1% 5%;
+					display: inline-block;
+					max-width: 100%;
+				}
+
+				body > ul {
+					background-color: #FFFAF4;
+					padding: 1%;
+					max-width: 100%;
+				}
+
+				ul {
+					list-style-type: none;
+				}
+
+				.tag {
+					color: darkred;
+				}
+
+				.attr {
+					color: darksalmon;
+				}
+
+				.value {
+					color: darkblue;
+				}
+
+				.comment {
+					color: lightgrey;
+				}
+
+				pre {
+					margin: 0;
+					max-width: 100%;
+					white-space: normal;
+				}
+			</style>
+		</head>
+
+		<body>
+			<h1>RSS feed by morss</h1>
+
+			<p>Your RSS feed is <strong style="color: green">ready</strong>. You
+			can enter the following url in your newsreader:</p>
+
+			<div id="url"></div>
+
+			<ul>
+				<xsl:apply-templates/>
+			</ul>
+
+			<script>
+				document.getElementById("url").innerHTML = window.location.href;
+			</script>
+		</body>
+		</html>
+	</xsl:template>
+
+	<xsl:template match="*">
+		<li>
+			<span class="element">
+				&lt;
+					<span class="tag"><xsl:value-of select="name()"/></span>
+
+					<xsl:for-each select="@*">
+						<span class="attr"> <xsl:value-of select="name()"/></span>
+						=
+						"<span class="value"><xsl:value-of select="."/></span>"
+					</xsl:for-each>
+				&gt;
+			</span>
+
+			<xsl:if test="node()">
+				<ul>
+					<xsl:apply-templates/>
+				</ul>
+			</xsl:if>
+
+			<span class="element">
+				&lt;/
+					<span class="tag"><xsl:value-of select="name()"/></span>
+				&gt;
+			</span>
+		</li>
+	</xsl:template>
+
+	<xsl:template match="comment()">
+		<li>
+			<pre class="comment"><![CDATA[<!--]]><xsl:value-of select="."/><![CDATA[-->]]></pre>
+		</li>
+	</xsl:template>
+
+	<xsl:template match="text()">
+		<li>
+			<pre>
+				<xsl:value-of select="normalize-space(.)"/>
+			</pre>
+		</li>
+	</xsl:template>
+
+	<xsl:template match="text()[not(normalize-space())]"/>
+
+</xsl:stylesheet>