A script to replace svn:log property of revisions

replace_svn_log.rb

require "tempfile"
require "rexml/document"

REVISION_FROM = "86678"
REVISION_TO = "HEAD"
REGEX = /#19358/
REPLACE = "#18958"

xml = `svn log -r#{REVISION_FROM}:#{REVISION_TO} --xml`
doc = REXML::Document.new xml
doc.elements.each("log/logentry") do |element|
  rev = element.attribute("revision")
  msg = element.elements["msg"].text
#   puts "#{rev} #{msg}"
  next unless msg.match(REGEX)

  new_msg = msg.gsub(REGEX, REPLACE)
  temp = Tempfile.new('replace_svn_log', :encoding => "UTF-8")
  temp.write new_msg
  temp.close

  command = %<svn propset --revprop -r#{rev} svn:log -F "#{temp.path}" --encoding UTF-8>
  puts command 
  system(command)
#   break
end