A small utility script that computes Java code metrics over a series of versions (in terms of git tags or commits).

bash-code-metrics.sh

#/bin/bash

src_dir=$1
test_dir=$2

commits=`cat $3`
commits_count=`echo $commits | wc -w`

dest_file=$4

printf "Writing metrics for %s commits into %s\n  src_dir: %s\n  test_dir: %s\n" $tag_count $dest_file $src_dir $test_dir

count=0

for commit in $commits
do
  printf "."
  
  # checkout
  git checkout -q $commit
  
  src_files=$(find $src_dir -type f -name '*.java' | wc -l)
  src_loc=$(find $src_dir -type f -name '*.java' -exec cat {} \; | sed '/^\s*$/d' | wc -l)
  
  test_files=$(find $test_dir -type f -name '*.java' | wc -l)
  test_loc=$(find $test_dir -type f -name '*.java' -exec cat {} \; | sed '/^\s*$/d' | wc -l)

  tests=$(find $test_dir -type f -name '*.java' -exec cat {} \; | grep @Test | wc -l)

  echo "$commit;$src_files;$test_files;$src_loc;$test_loc;$tests" >> $dest_file
done

printf "\nDone.\n"