Checks the year in copyright headers in RAP

check-copyright.sh

#!/bin/bash
# Script to check copyright headers in RAP
# Usage: check-copyright.sh <file or folder>
#
# Checks for latest change of the file. For every file that has been
# changed in the current year, but does not have a copyright header
# with this year in it, a message is prepended to the file.

if [ $# -lt 1 ]; then
  echo missing argument
  exit 1
fi

filename=$1

if [ -d "$filename" ]; then
  exec find "$filename" -name "*.java" -o -name "*.js" -exec "$0" "{}" \;
elif [ ! -f "$filename" ]; then
  echo "no such file or directory"
  exit 1
fi

tmpfile=_copyright.tmp

# Ignore common third-party copyright headers
grep -qi "Copyright.*IBM" "$filename" && exit 0
grep -qi "Copyright.*Yahoo" "$filename" && exit 0
grep -qi "Copyright.*World Wide Web Consortium" "$filename" && exit 0
grep -qi "Copyright.*The Apache Software Foundation" "$filename" && exit 0

currentYear=`date +%Y`
year=`git log -n 1 --pretty=format:%ai -- "$filename" | cut -d - -f 1`
# only fix copyright for this year,
# otherwise the last commit will differ from the copyright again
if [ "$year" == "$currentYear" ]; then
  grep -q "Copyright.*$year" "$filename"
  if [ $? != 0 ]; then
    echo "Last changed: $year $filename"
    mv "$filename" "$tmpfile"
    echo "Last changed: $year" > "$filename"
    cat "$tmpfile" >> "$filename"
    rm "$tmpfile"
  fi
fi