1 files changed, 51 insertions, 0 deletions
diff --git a/references/trac-wiki-to-markdown.rb b/references/trac-wiki-to-markdown.rb
new file mode 100644
index 0000000..f7d41ae
--- /dev/null
+++ b/references/trac-wiki-to-markdown.rb
@@ -0,0 +1,51 @@
+# Untested code snippet from https://gist.github.com/somebox/619537
+
+class String
+  def trac_to_markdown!
+    gsub!(/\{\{\{([^\n]+?)\}\}\}/, '`\1`')
+    gsub!(/\{\{\{(.+?)\}\}\}/m){|m| m.each_line.map{|x| "\t#{x}".gsub(/[\{\}]{3}/,'')}.join}
+    gsub!(/\=\=\=\=\s(.+?)\s\=\=\=\=/, '### \1')
+    gsub!(/\=\=\=\s(.+?)\s\=\=\=/, '## \1')
+    gsub!(/\=\=\s(.+?)\s\=\=/, '# \1')
+    gsub!(/\=\s(.+?)\s\=[\s\n]*/, '')
+    gsub!(/\[(http[^\s\[\]]+)\s([^\[\]]+)\]/, '[\2](\1)')
+    gsub!(/\!(([A-Z][a-z0-9]+){2,})/, '\1')
+    gsub!(/'''(.+)'''/, '*\1*')
+    gsub!(/''(.+)''/, '_\1_')
+    gsub!(/^\s\*/, '*')
+    gsub!(/^\s\d\./, '1.')
+
+    gsub!(/\{\{\{([^\n]+?)\}\}\}/, '`\1`')
+    gsub!(/'''(.+?)'''/, '**\1**')
+    gsub!(/''(.+?)''/, '*\1*')
+    gsub!(/((^\|\|[^\n\r]+\|\|[ \t]*\r?(\n|$))+)/m) do |m|
+      m = m.each_line.map do |x|
+        x.gsub(/\t/, ' ')
+          .gsub(/(\|\|){2,}/){|k| k.gsub(/\|\|/, '||   ')}
+        .gsub(/ {3,}/, '   ')
+      end.join
+      lines = m.each_line.to_a
+      line1 = lines.shift
+      line2 = line1.dup.gsub(/[^\n\r\|]/, '-')
+      lines.unshift(line1, line2)
+      c = lines.join
+      c = c.each_line.map do |x|
+        x.gsub(/\=\s?(.+?)\s?=/, ' \1 ')
+          .gsub(/\|\|/, '|')
+      end.join
+    end
+    gsub!(/^\{\{\{(.+?)^\}\}\}/m, '```\1```')
+    gsub!(/\=\=\=\=\s(.+?)\s\=\=\=\=/, '### \1')
+    gsub!(/\=\=\=\s(.+?)\s\=\=\=/, '## \1')
+    gsub!(/\=\=\s(.+?)\s\=\=/, '# \1')
+    gsub!(/\=\s(.+?)\s\=[\s\n]*/, '')
+    gsub!(/\[(http[^\s\[\]]+)\s([^\[\]]+)\]/, '[\2](\1)')
+    gsub!(/\!(([A-Z][a-z0-9]+){2,})/, '\1')
+    gsub!(/^\s\*/, '*')
+    gsub!(/^\s\d\./, '1.')
+  end
+end
+
+some_trac = 'my document'
+
+puts some_trac.trac_to_markdown!