How I recovered a SVN repo archive, extracted mod/{trunk,tags,branches} submodules, and merged it into a single Git repo

convert.rb

# export/ is a svn checkout
modules = Dir['export/*'].map { |path| path[7..-1]}
modules.each do |mod|
  puts "\n>>> Converting #{mod}\n\n"
  system "git svn clone --no-metadata --preserve-empty-dirs --stdlayout --authors-file=users.txt svn://localhost/#{mod} git/#{mod}"
end

merge.rb

require 'FileUtils'
include FileUtils

wipe = %w{ 
  MERGED 
  au.unsw.singh.wsoperations 
  OperationsLibrary
  fr.isima.ponge.wsprotocol.wsoperations
  fr.isima.rivetgarcia.bpel2protocol
  ProtocolEmptiness
  fr.isima.lebeausempe.wsprotocol.emptiness
  fr.isima.lebeausempe.wsprotocol.emptiness.ui
}

wipe.each { |repo| rm_rf repo }

repos = Dir['*']

mkdir "MERGED"
chdir "MERGED"
system "git init"

touch ".gitignore"
system "git add .gitignore"
system "git commit -am '.gitignore file'"

repos.each do |repo|
  puts ">>> Merging on #{repo}"
  system "git remote add -f #{repo} ../#{repo}"
  system "git merge -s ours --no-commit #{repo}/master"
  system "git read-tree --prefix=#{repo}/ -u #{repo}/master"
  system "git commit -m \"Subtree merged in #{repo}\""
end

chdir ".."

users.sh

authors=$(svn log svn://localhost | grep -e '^r' | awk 'BEGIN { FS = "|" } ; { print $2 }' | sort | uniq)
for author in ${authors}; do
  echo "${author} = NAME <USER@DOMAIN>";
done