#!/usr/bin/env ruby

require "open3"

# An example hook script to check the commit log message.
# Called by "git commit" with one argument, the name of the file
# that has the commit message.  The hook should exit with non-zero
# status after issuing an appropriate message if it wants to stop the
# commit.  The hook is allowed to edit the commit message file.
#
# To enable this hook, rename this file to "commit-msg".

# Uncomment the below to add a Signed-off-by line to the message.
# Doing this in a hook is a bad idea in general, but the prepare-commit-msg
# hook is more suited to it.
#
# SOB=$(git var GIT_AUTHOR_IDENT | sed -n 's/^\(.*>\).*$/Signed-off-by: \1/p')
# grep -qs "^$SOB" "$1" || echo "$SOB" >> "$1"

# This example catches duplicate Signed-off-by lines.

TargetCode = "UTF-8"

com = "nkf -g " + ARGV[0]
o, e, s = Open3.capture3( com )
mojicode = o.chomp

if mojicode == "BINARY" || mojicode == "ASCII" || mojicode == "" then
  exit 0
else
  if mojicode == TargetCode then
    exit 0
  else
    puts "[Error] Kanji code of commit message has to be " + TargetCode + "."
    exit 1
  end
end
