From 507a3cd734a8b78f5bd4c6ebb8e41057ea9bac08 Mon Sep 17 00:00:00 2001
From: Moritz Bunkus <moritz@bunkus.org>
Date: Thu, 29 Dec 2016 17:03:03 +0100
Subject: [PATCH] news_to_releases_xml.rb: add script for converting NEWS.md
 file to releases.xml

---
 src/tools/modules/news.rb         | 52 +++++++++++++++++++++++
 src/tools/news_to_releases_xml.rb | 70 +++++++++++++++++++++++++++++++
 2 files changed, 122 insertions(+)
 create mode 100644 src/tools/modules/news.rb
 create mode 100755 src/tools/news_to_releases_xml.rb

diff --git a/src/tools/modules/news.rb b/src/tools/modules/news.rb
new file mode 100644
index 000000000..e308895d6
--- /dev/null
+++ b/src/tools/modules/news.rb
@@ -0,0 +1,52 @@
+def parse_news file_name
+  news         = []
+  current_line = []
+  version      = 'HEAD'
+  date         = 'unknown'
+  type         = 'Other changes'
+
+  flush        = lambda do
+    if !current_line.empty?
+      news << {
+        :content => current_line.join(' '),
+        :version => version,
+        :date    => date,
+        :type    => type
+      }
+      current_line = []
+    end
+  end
+
+  IO.readlines(file_name).each do |line|
+    is_continuation = %r{^\s}.match(line)
+    line            = line.chomp.gsub(%r{^\s+}, '').gsub(%r{\s+}, ' ')
+
+    next if line.empty?
+
+    flush.call if %r{^[#*]}.match(line)
+
+    #  # Version 9.7.1 "Pandemonium" 2016-12-27
+    #  # Version 0.6.4 2003-08-27
+
+    if match = %r{ ^\# \s+ Version \s+ (?<version> [0-9.-]+) (?: \s+ " (?<codename>.+) " )? \s+ (?<year>\d+)-(?<month>\d+)-(?<day>\d+) }x.match(line)
+      version = match[:version]
+      date    = sprintf("%04d-%02d-%02d", match[:year].to_i, match[:month].to_i, match[:day].to_i)
+      type    = 'Other changes'
+
+    elsif %r{ ^\#\# \s+ (.+) }x.match(line)
+      type = $1
+
+    elsif %r{ ^\# }x.match(line) && !is_continuation
+      fail "Don't know what to do with this line: #{line}"
+
+    else
+      flush.call                              if     /^\*/.match(line)
+      current_line << line.gsub(/^\*\s*/, '') unless line.empty?
+
+    end
+  end
+
+  flush.call
+
+  news.chunk { |e| e[:version] }
+end
diff --git a/src/tools/news_to_releases_xml.rb b/src/tools/news_to_releases_xml.rb
new file mode 100755
index 000000000..cf7c2f2ce
--- /dev/null
+++ b/src/tools/news_to_releases_xml.rb
@@ -0,0 +1,70 @@
+#!/usr/bin/env ruby
+
+require 'rubygems'
+require 'pp'
+require 'builder'
+require 'rexml/document'
+require 'trollop'
+
+require_relative 'modules/news'
+
+def create_all_releases_xml news
+  releases_xml = REXML::Document.new File.new($opts[:releases])
+  builder      = Builder::XmlMarkup.new( :indent => $opts[:noindent] ? 0 : 2 )
+
+  node_to_hash = lambda { |xpath|
+    begin
+      Hash[ *REXML::XPath.first(releases_xml, xpath).elements.collect { |e| [ e.name, e.text ] }.flatten ]
+    rescue
+      Hash.new
+    end
+  }
+
+  builder.instruct! :xml, :version => "1.0", :encoding => "UTF-8"
+
+  xml = builder.tag!('mkvtoolnix-releases') do
+    builder.tag!('latest-source',      node_to_hash.call("/mkvtoolnix-releases/latest-source"))
+    builder.tag!('latest-windows-pre', node_to_hash.call("/mkvtoolnix-releases/latest-windows-pre"))
+
+    builder.tag! 'latest-windows-binary' do
+      builder.tag! 'installer-url', node_to_hash.call("/mkvtoolnix-releases/latest-windows-binary/installer-url")
+      builder.tag! 'portable-url',  node_to_hash.call("/mkvtoolnix-releases/latest-windows-binary/portable-url")
+    end
+
+    news.each do |release|
+      attributes = {
+        "version" => release[0],
+      }.merge node_to_hash.call("/mkvtoolnix-releases/release[version='#{release[0]}']")
+
+      builder.release attributes do
+        builder.changes do
+          release[1].each do |entry|
+            builder.change(entry[:content], entry.reject { |key| [:version, :content, :date].include? key })
+          end
+        end
+      end
+    end
+  end
+
+  puts xml
+end
+
+def parse_opts
+  opts = Trollop::options do
+    opt :news,     "News source file",         :type => String, :default => 'NEWS.md'
+    opt :releases, "releases.xml source file", :type => String, :default => 'releases.xml'
+    opt :noindent, "do not indent the XML"
+  end
+
+  Trollop::die :news,     "must be given and exist" if !opts[:news]      || !File.exist?(opts[:news])
+  Trollop::die :releases, "must be given and exist" if !opts[:releases]  || !File.exist?(opts[:releases])
+
+  opts
+end
+
+def main
+  $opts = parse_opts
+  create_all_releases_xml parse_news($opts[:news])
+end
+
+main