#!/usr/bin/ruby -w

# A Subversion post-commit hook. Edit the configurable stuff below, and
# copy into your repository's hooks/ directory as "post-commit". Don't
# forget to "chmod a+x post-commit".

# ------------------------------------------------------------------------

# You *will* need to change these.

address="FOO@SOME_DOMAIN.com"
sendmail="/usr/sbin/sendmail"
svnlook="/usr/bin/svnlook"

# ------------------------------------------------------------------------

require 'cgi'

# Subversion's commit-email.pl suggests that svnlook might create files.
Dir.chdir("/tmp")

# What revision in what repository?
repo = ARGV.shift()
rev = ARGV.shift()

# Get the overview information.
info=`#{svnlook} info #{repo} -r #{rev}`
info_lines=info.split("\n")
author=info_lines.shift
date=info_lines.shift
info_lines.shift
comment=info_lines

# Output the overview.
body = "<p><b>#{author}</b> #{date}</p>"
body << "<p>"
comment.each { |line|  body << "#{CGI.escapeHTML(line)}<br/>\n" }
body << "</p>"
body << "<hr noshade>"

# Get and output the patch.
changes=`#{svnlook} diff #{repo} -r #{rev}`
body << "<pre>"
changes.each do |top_line|
  top_line.split("\n").each do |line|
    color = case
      when line =~ /^Modified: / || line =~ /^=+$/ || line =~ /^@@ /: "gray"
      when line =~ /^-/: "red"
      when line =~ /^\+/: "blue"
      else "black"
    end
    body << %Q{<font style="color:#{color}">#{CGI.escapeHTML(line)}</font><br/>\n}
 end
end
body << "</pre>"

# Write the header.
header = ""
header << "To: #{address}\n"
header << "From: #{address}\n"
header << "Subject: [SVN] #{repo} revision #{rev}\n"
header << "Reply-to: #{address}\n"
header << "MIME-Version: 1.0\n"
header << "Content-Type: text/html; charset=UTF-8\n"
header << "Content-Transfer-Encoding: 8bit\n"
header << "\n"

# Send the mail.
begin
    fd = open("|#{sendmail} #{address}", "w")
    fd.print(header)
    fd.print(body)
rescue
    exit(1)
end
fd.close

# We're done.
exit(0)