From d26fe5ce2eb543cc372f24646ce2d190f7ce26f0 Mon Sep 17 00:00:00 2001
From: "(no author)" <(no author)@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Sun, 27 Jun 2004 03:23:29 +0000
Subject: This commit was manufactured by cvs2svn to create branch 'ruby_1_8'.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@6531 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 sample/rss/tdiary_plugin/rss-recent.rb | 211 +++++++++++++++++++++++++++++++++
 1 file changed, 211 insertions(+)
 create mode 100644 sample/rss/tdiary_plugin/rss-recent.rb

(limited to 'sample/rss')

diff --git a/sample/rss/tdiary_plugin/rss-recent.rb b/sample/rss/tdiary_plugin/rss-recent.rb
new file mode 100644
index 0000000000..8ba8ed0b52
--- /dev/null
+++ b/sample/rss/tdiary_plugin/rss-recent.rb
@@ -0,0 +1,211 @@
+# rss-recent.rb: RSS recent plugin 
+#
+# rss_recnet: show recnet list from RSS
+#   parameters (default):
+#      url: URL of RSS
+#      max: max of list itmes(5)
+#      cache_time: cache time(second) of RSS(60*60)
+#      
+#
+# Copyright (c) 2003-2004 Kouhei Sutou <kou@cozmixng.org>
+# Distributed under the GPL
+#
+
+require "rss/rss"
+
+RSS_RECENT_FIELD_SEPARATOR = "\0"
+RSS_RECENT_ENTRY_SEPARATOR = "\1"
+RSS_RECENT_VERSION = "0.0.4"
+RSS_RECENT_HTTP_HEADER = {
+	"User-Agent" => "tDiary RSS recent plugin version #{RSS_RECENT_VERSION}. " <<
+	"Using RSS parser version is #{::RSS::VERSION}.",
+}
+
+def rss_recent(url, max=5, cache_time=3600)
+	cache_file = "#{@cache_path}/rss-recent.#{CGI.escape(url)}"
+
+	rss_recent_cache_rss(url, cache_file, cache_time.to_i)
+	
+	return '' unless test(?r, cache_file)
+
+	rv = "<ul>\n"
+	
+	i = 0
+	rss_recent_read_from_cache(cache_file).each do |title, url, time|
+		break if i >= max
+		next if title.nil?
+		rv << '<li>'
+		rv << %Q[<span class="#{rss_recent_modified_class(time)}">]
+		unless url.nil?
+			rv << %Q[<a href="#{CGI.escapeHTML(url)}" title="#{CGI.escapeHTML(title)}]
+			rv << %Q[ (#{CGI.escapeHTML(time.localtime.to_s)})] unless time.nil?
+			rv << %Q[">]
+		end
+		rv << CGI::escapeHTML(title)
+		rv << '</a>' unless url.nil?
+		rv << "(#{rss_recent_modified(time)})"
+		rv << %Q[</span>]
+		rv << "</li>\n"
+		i += 1
+	end
+
+	rv << "</ul>\n"
+
+	rv
+end
+
+class InvalidResourceError < StandardError; end
+
+def rss_recent_cache_rss(url, cache_file, cache_time)
+
+	cached_time = nil
+	cached_time = File.mtime(cache_file) if File.exist?(cache_file)
+
+	if cached_time.nil? or Time.now > cached_time + cache_time
+		require 'time'
+		require 'open-uri'
+		require 'net/http'
+		require 'uri/generic'
+		require 'rss/parser'
+		require 'rss/1.0'
+		require 'rss/2.0'
+		require 'rss/dublincore'
+		
+		begin
+			uri = URI.parse(url)
+
+			raise URI::InvalidURIError if uri.scheme != "http"
+
+			rss_source = rss_recent_fetch_rss(uri, cached_time)
+			
+			raise InvalidResourceError if rss_source.nil?
+
+			# parse RSS
+			rss = ::RSS::Parser.parse(rss_source, false)
+			raise ::RSS::Error if rss.nil?
+
+			# pre processing
+			begin
+				rss.output_encoding = charset
+			rescue ::RSS::UnknownConversionMethodError
+			end
+
+			rss_infos = rss.items.collect do |item|
+				rss_recent_pubDate_to_dc_date(item)
+				[item.title, item.link, item.dc_date]
+			end
+			rss_recent_write_to_cache(cache_file, rss_infos)
+
+		rescue URI::InvalidURIError
+			rss_recent_write_to_cache(cache_file, [['Invalid URI', url]])
+		rescue InvalidResourceError, ::RSS::Error
+			rss_recent_write_to_cache(cache_file, [['Invalid Resource', url]])
+		end
+	end
+
+end
+
+def rss_recent_fetch_rss(uri, cache_time)
+	rss = nil
+	begin
+		uri.open(rss_recent_http_header(cache_time)) do |f|
+			case f.status.first
+			when "200"
+				rss = f.read
+				# STDERR.puts "Got RSS of #{uri}"
+			when "304"
+				# not modified
+				# STDERR.puts "#{uri} does not modified"
+			else
+				raise InvalidResourceError
+			end
+		end
+	rescue TimeoutError, SocketError, StandardError,
+			SecurityError # occured in redirect
+		raise InvalidResourceError
+	end
+	rss
+end
+
+def rss_recent_http_header(cache_time)
+	header = RSS_RECENT_HTTP_HEADER.dup
+	if cache_time.respond_to?(:rfc2822)
+		header["If-Modified-Since"] = cache_time.rfc2822
+	end
+	header
+end
+
+def rss_recent_write_to_cache(cache_file, rss_infos)
+	File.open(cache_file, 'w') do |f|
+		f.flock(File::LOCK_EX)
+		rss_infos.each do |info|
+			f << info.join(RSS_RECENT_FIELD_SEPARATOR)
+			f << RSS_RECENT_ENTRY_SEPARATOR
+		end
+		f.flock(File::LOCK_UN)
+	end
+end
+
+def rss_recent_read_from_cache(cache_file)
+	require 'time'
+	infos = []
+	File.open(cache_file) do |f|
+		while info = f.gets(RSS_RECENT_ENTRY_SEPARATOR)
+			info = info.chomp(RSS_RECENT_ENTRY_SEPARATOR)
+			infos << info.split(RSS_RECENT_FIELD_SEPARATOR)
+		end
+	end
+	infos.collect do |title, url, time|
+		[
+			rss_recent_convert(title),
+			rss_recent_convert(url),
+			rss_recent_convert(time) {|time| Time.parse(time)},
+		]
+	end
+end
+
+def rss_recent_convert(str)
+	if str.nil? or str.empty?
+		nil
+	else
+		if block_given?
+			yield str
+		else
+			str
+		end
+	end
+end
+
+# from RWiki
+def rss_recent_modified(t)
+	return '-' unless t
+	dif = (Time.now - t).to_i
+	dif = dif / 60
+	return "#{dif}m" if dif <= 60
+	dif = dif / 60
+	return "#{dif}h" if dif <= 24
+	dif = dif / 24
+	return "#{dif}d"
+end
+
+# from RWiki
+def rss_recent_modified_class(t)
+	return 'dangling' unless t
+	dif = (Time.now - t).to_i
+	dif = dif / 60
+	return "modified-hour" if dif <= 60
+	dif = dif / 60
+	return "modified-today" if dif <= 24
+	dif = dif / 24
+	return "modified-month" if dif <= 30
+	return "modified-year" if dif <= 365
+	return "modified-old"
+end
+
+def rss_recent_pubDate_to_dc_date(target)
+	if target.respond_to?(:pubDate)
+		class << target
+			alias_method(:dc_date, :pubDate)
+		end
+	end
+end
-- 
cgit v1.2.3