Add cvs2svn

Signed-off-by: Adam Vandenberg <flangy@gmail.com>

* Use a run-time check to see if the default Python has gdbm

Formula/cvs2svn.rb

@@ -0,0 +1,37 @@
+require 'formula'
+
+class Cvs2svn <Formula
+  url 'http://trac.macports.org/export/70472/distfiles/cvs2svn/cvs2svn-2.3.0.tar.gz'
+  homepage 'http://cvs2svn.tigris.org/'
+  md5 '6c412baec974f3ff64b9145944682a15'
+
+  def install
+    unless quiet_system "/usr/bin/env", "python", "-c", "import gdbm"
+      onoe "The Python being used doesn't have gdbm support:"
+      puts `which python`
+      puts "The Homebrew-built Python does include gdbm support, which"
+      puts "is required for this formula."
+      exit 1
+    end
+
+    system "python", "setup.py", "install", "--prefix=#{prefix}"
+    system "make man"
+    man1.install [gzip('cvs2svn.1'), gzip('cvs2git.1'), gzip('cvs2bzr.1')]
+    prefix.install %w[ BUGS CHANGES COMMITTERS HACKING
+      cvs2bzr-example.options cvs2git-example.options cvs2hg-example.options
+      cvs2svn-example.options contrib ]
+
+    doc.install Dir['doc/*']
+    doc.install Dir['www/*']
+  end
+
+  def caveats; <<-EOF
+    NOTE: man pages have been installed, but for better documentation see:
+      #{HOMEBREW_PREFIX}/share/doc/cvs2svn/cvs2svn.html
+    or http://cvs2svn.tigris.org/cvs2svn.html.
+
+    Contrib scripts and example options files are installed in:
+      #{prefix}
+    EOF
+  end
+end