* lib/rss/rss.rb (Hash#merge, Enumerable#sort_by): removed.

* lib/rss/rss.rb (RSS::RootElementMixin#to_xml): added.
  [ruby-talk:197284]

  We can convert RSS version easily like the following:
    rss10 = RSS::Parser.parse(File.read("1.0.rdf"))
    File.open("2.0.rss", "w") {|f| f.print(rss10.to_xml("2.0"))}

* test/rss/test_1.0.rb: added #to_xml test.
* test/rss/test_2.0.rb: ditto.

* test/rss/rss-testcase.rb: added some helper methods that
  generates sample RSS 2.0.

* sample/rss/convert.rb: added a sample script to convert RSS format.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@10301 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 69 insertions, 0 deletions

diff --git a/sample/rss/convert.rb b/sample/rss/convert.rb
new file mode 100755
index 0000000000..394b13e8eb
--- /dev/null
+++ b/sample/rss/convert.rb
@@ -0,0 +1,69 @@
+#!/usr/bin/env ruby
+
+require "rss"
+
+feeds = []
+verbose = false
+encoding = "UTF-8"
+to_version = "1.0"
+
+def error(exception)
+  mark = "=" * 20
+  mark = "#{mark} error #{mark}"
+  STDERR.puts mark
+  STDERR.puts exception.class
+  STDERR.puts exception.message
+  STDERR.puts exception.backtrace
+  STDERR.puts mark
+end
+
+before_time = Time.now
+ARGV.each do |fname|
+  case fname
+  when '-v'
+    verbose = true
+    next
+  when /^-t(0\.91|1\.0|2\.0)$/
+    to_version = $1
+    next
+  end
+  rss = nil
+  f = File.read(fname)
+  begin
+    ## do validate parse
+    rss = RSS::Parser.parse(f)
+  rescue RSS::InvalidRSSError
+    error($!) if verbose
+    ## do non validate parse for invalid RSS 1.0
+    begin
+      rss = RSS::Parser.parse(f, false)
+    rescue RSS::Error
+      ## invalid RSS.
+      error($!) if verbose
+    end
+  rescue RSS::Error
+    error($!) if verbose
+  end
+  if rss.nil?
+    STDERR.puts "#{fname} does not include RSS 1.0 or 0.9x/2.0"
+  else
+    begin
+      rss.output_encoding = encoding
+    rescue RSS::UnknownConversionMethodError
+      error($!) if verbose
+    end
+    feeds << [fname, rss]
+  end
+end
+processing_time = Time.now - before_time
+
+feeds.each do |fname, rss|
+  converted_rss = rss.to_xml(to_version)
+  output_name = fname.sub(/(\.[^\.]+)$/, "-#{to_version}\\1")
+  File.open(output_name, "w") do |output|
+    output.print(converted_rss)
+  end
+end
+
+STDERR.puts "Used XML parser: #{RSS::Parser.default_parser}"
+STDERR.puts "Processing time: #{processing_time}s"