From: davyd <davyd>
Date: Sat, 7 Feb 2004 05:44:17 +0000 (+0000)
Subject: Initial Upload
X-Git-Url: https://git.ucc.asn.au/?a=commitdiff_plain;h=b2d7ed4b39a5a03fb8f264e26b0d04a502928ddf;p=planet-ucc.git

Initial Upload
---

b2d7ed4b39a5a03fb8f264e26b0d04a502928ddf
diff --git a/XMLParse.py b/XMLParse.py
new file mode 100644
index 0000000..a3ef6ae
--- /dev/null
+++ b/XMLParse.py
@@ -0,0 +1,115 @@
+#
+# XMLParse.py
+#
+# Parse arbitrary XML news streams into an object type
+# understandable by Planet UCC.
+#
+# (c) 2004, Davyd Madeley <davyd@ucc.asn.au>
+#
+
+import sys, time
+from xml.dom.minidom import parseString
+
+class Blog:
+	def __init__(self):
+		self.blogTitle	= None
+		self.blogURL	= None
+		self.imageURL	= None
+		self.imageLink	= None
+		self.items	= []
+
+class BlogItem:
+	def __init__(self):
+		self.itemTitle	= None
+		self.itemDate	= None
+		self.itemURL	= None
+		self.contents	= None
+
+class XMLParse:
+	def __init__(self, XMLString):
+		# parse our XML file
+		self.dom	= parseString(XMLString)
+		self.bloglist	= None
+		# find out what sort of XML format we're dealing with
+		if self.dom.documentElement.tagName == 'rss':
+			# this is some sort of RSS feed
+			# find out what version
+			if self.dom.documentElement.attributes.has_key('version'):
+				version	= self.dom.documentElement.attributes['version'].value
+				if version == '2.0':
+					# this is an RSS2 document
+					self.news	= RSS2Parse(self.dom)
+				else:
+					sys.stderr.write('DEBUG: XMLParse: Unknown RSS version %s\n' % version)
+			else:
+				sys.stderr.write('DEBUG: XMLParse: RSS document has no version information\n')
+		else:
+			sys.stderr.write('DEBUG: XMLParse: Unknown XML document %s\n' % dom.documentElement.tagname)
+			
+	def parse(self):
+		"Return a list of Blog objects from the XML file we parsed"
+		# quick cache for XML parsing
+		if self.bloglist:
+			return self.bloglist
+		else:
+			self.bloglist	= self.news.parse()
+			return self.bloglist
+
+class RSS2Parse:
+	def __init__(self, dom):
+		self.dom	= dom
+		self.root	= dom.documentElement
+
+	def __retrieve_value__(self, fromNode):
+		"Returns the value from between two nodes, ie <node>text</node>"
+		for node in fromNode.childNodes:
+			if node.nodeType == 3:
+				# this is the information contained within our node
+				return node.nodeValue
+			else:
+				sys.stderr.write('DEBUG: RSS2Parse: Asked to retrieve value from wrong part of tree\n')
+				return None
+	
+	def __parse_item__(self, fromNode):
+		"Returns a BlogItem collected from fromNode"
+		item	= BlogItem()
+		for node in fromNode.childNodes:
+			if node.nodeType == 1 and node.tagName == 'title':
+				item.itemTitle	= self.__retrieve_value__(node)
+			elif node.nodeType == 1 and node.tagName == 'pubDate':
+				try:
+					item.itemDate	= time.mktime(time.strptime(self.__retrieve_value__(node), '%a, %d %b %Y %H:%M:%S %Z'))
+				except:
+					try:
+						item.itemDate	= time.mktime(time.strptime(self.__retrieve_value__(node), '%a, %d %b %Y %H:%M:%S +0000'))
+					except:
+						sys.stderr.write("DEBUG: RSS2Parse: time string %s unparseable\n" % (self.__retrieve_value__(node)))
+			elif node.nodeType == 1 and node.tagName == 'link':
+				item.itemURL	= self.__retrieve_value__(node)
+			elif node.nodeType == 1 and node.tagName == 'description':
+				item.contents	= self.__retrieve_value__(node)
+		return item
+
+	def parse(self):
+		"Returns a list of Blog objects for parsing into an arbitrary data format."
+		channellist	= []
+		for node in self.root.childNodes:
+			if node.nodeType == 1 and node.tagName == 'channel':
+				channel	= Blog()
+				channellist.append(channel)
+				# populate channel with information from the blog
+				for node2 in node.childNodes:
+					if node2.nodeType == 1 and node2.tagName == 'title':
+						channel.blogTitle	= self.__retrieve_value__(node2)
+					elif node2.nodeType == 1 and node2.tagName == 'link':
+						channel.blogURL		= self.__retrieve_value__(node2)
+					elif node2.nodeType == 1 and node2.tagName == 'image':
+						for node3 in node2.childNodes:
+							if node3.nodeType == 1 and node3.tagName == 'url':
+								channel.imageURL		= self.__retrieve_value__(node3)
+							elif node3.nodeType == 1 and node3.tagName == 'link':
+								channel.imageLink	= self.__retrieve_value__(node3)
+					elif node2.nodeType == 1 and node2.tagName == 'item':
+						item	= self.__parse_item__(node2)
+						channel.items.append(item)
+		return channellist
diff --git a/XMLWriter.py b/XMLWriter.py
new file mode 100644
index 0000000..1311fb6
--- /dev/null
+++ b/XMLWriter.py
@@ -0,0 +1,126 @@
+#
+# XMLWriter.py
+#
+# Generate arbitrary XML files
+#
+# (c) 2004, Davyd Madeley <davyd@ucc.asn.au>
+#
+
+import time
+
+class PlanetItem:
+	def __init__(self, blog, item):
+		self.itemTitle	= item.itemTitle
+		self.itemURL	= item.itemURL
+		self.itemDate	= item.itemDate
+		self.blogTitle	= blog.blogTitle
+		self.blogURL	= blog.blogURL
+		self.imageURL	= blog.imageURL
+		self.imageLink	= blog.imageLink
+		self.contents	= item.contents
+
+class PlanetDate:
+	def __init__(self, date):
+		self.planetDate	= date
+		self.items	= []
+
+class Planet:
+	def __init__(self, bloglist):
+		self.__bloglist__	= bloglist
+		self.__tainted__	= True
+		self.dates		= []
+		
+	def append(self, blog):
+		self.__bloglist__.append(blog)
+		self.__tainted__	= True
+	
+	def __getNext__(self, bloglist):
+		"Returns a PlanetItem reaped from a bloglist"
+		latestTime		= 0
+		holdingBlog		= None
+		for blog in bloglist:
+			if len(blog.items) > 0 and blog.items[0].itemDate > latestTime:
+				latestTime	= blog.items[0].itemDate
+				holdingBlog	= blog
+		if holdingBlog == None:
+			return None
+		item	= holdingBlog.items.pop(0)
+		return PlanetItem(holdingBlog, item)
+	
+	def sort(self):
+		if self.__tainted__:
+			# we need to sort the blogs into a single news feed
+			# copy the bloglist to a working symbol
+			bloglist	= self.__bloglist__ + []
+			lastDate	= -1
+			workingDate	= None
+			self.dates	= []
+			while True:
+				lastItem	= self.__getNext__(bloglist)
+				if lastItem == None:
+					break
+				# this checks to see if it's a new day
+				if time.localtime(lastItem.itemDate) != lastDate:
+					workingDate	= PlanetDate(lastItem.itemDate)
+					self.dates.append(workingDate)
+				# append the item to the current date
+				workingDate.items.append(lastItem)	
+			self.__tainted__	= False
+		return self.dates
+			
+
+class XMLWriter:
+	def __init__(self, doctype, bloglist):
+		self.planet	= Planet(bloglist)
+		self.items	= self.planet.sort()
+		# doctype should be something like XMLWriter.XHTMLWriter
+		self.writer	= doctype(self.items)
+	
+	def write(self):
+		output		= self.writer.write()
+		return output
+
+class XHTMLWriter:
+	def __init__(self, planet):
+		self.planet	= planet
+		self.maxitems	= 100
+	
+	def __write_item__(self, item):
+		output	=	''
+		output	+=	'<div id="item">\n'
+		output	+=	'<h2>%s: %s</h2>\n' % (item.blogTitle, item.itemTitle)
+		output	+=	'<p class="time">\n'
+		output	+=	'(%s)\n' % time.strftime('%A %B %d, %Y %H:%M %Z', time.localtime(item.itemDate))
+		output	+=	'</p>\n'
+		output	+=	'<p class="body">\n'
+		output	+=	item.contents
+		output	+=	'\n</p>\n'
+		return output
+	
+	def write(self):
+		itemcount	= 0
+		output	=	''
+		output	+=	'<?xml version="1.0" encoding="UTF-8"?>\n'
+		output	+=	'<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">\n'
+		output	+=	'<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" >\n'
+		output	+=	'<head>\n'
+		output	+=	'<title>Planet UCC</title>\n'
+		# XXX: we'll want a style sheet in here
+		output	+=	'</head>\n'
+		output	+=	'<body>\n'
+		# XXX: we want some stuff in here, I'm sure
+		for date in self.planet:
+			output	+= '<h1>%s</h1>\n' % time.strftime('%A %B %d, %Y', time.localtime(date.planetDate))
+			for item in date.items:
+				output	+= self.__write_item__(item)
+				# see how many items we've written
+				itemcount += 1
+				if itemcount >= self.maxitems:
+					break
+			# again, check to see if we've written the maximum number of items
+			if itemcount >= self.maxitems:
+				break
+		# XXX: we want further stuff here
+		output	+=	'</body>'
+		output	+=	'</html>'
+		return output