#!/bin/sh

cov_gen_clean()
{
   echo "Cleaning up stale gcov data"
   find . -name \*.gcda -o -name \*.gcno | xargs rm -f
   make cov-clean > /dev/null
}

cov_gen_check_cli()
{
   if test -x $php_version; then
      check_gcov=`nm $php_version | grep '__gcov_open' | wc -l`
      if test "$check_gcov" != "1"; then
          echo "PHP CLI Found ($php_version) does not appear to have GCOV enabled"
          echo "Please recompile with --enable-gcov or set PHP_EXEC"
          exit 1
      fi
      echo "GCOV support in PHP confirmed"
   else
      echo "Could not find PHP binary (using $php_version)"
      echo "Please compile the CLI version of PHP using the --enable-gcov flag"
      exit 1
   fi
}

cov_gen_usage()
{
    echo "$0 --[help] <cli executable>";
}

cov_gen_generate()
{
   echo "Confirming GCOV is available in PHP"
   cov_gen_check_cli
   cov_gen_clean
   export NO_INTERACTION=1
   export TEST_PHP_EXECUTABLE="$php_version"

   echo "Running Test Suite (this is going to take awhile)"

   $php_version -c ./php.ini-test run-tests.php > /dev/null
   echo "Performing Code Coverage Analysis"
   make cov > /dev/null
   echo "Generating HTML report of Analysis"
   make cov-html > /dev/null
}

while test $# != 0; do
   case "$1" in
      --help)
        cov_gen_usage
        exit 0
        ;;
      *)
        if test -x $1; then
            echo "Using PHP executable $1"
            php_version="$1"
            cov_gen_generate
	    exit 0
        fi 
        ;;
    esac
    shift
done

echo "Using Default Location for PHP executable"
php_version="sapi/cli/php"
cov_gen_generate
exit 0