JaCoCo -- Generate HTML report from coverage data and (compiled) source code

jacoco_generate_report.sh

#!/usr/bin/env bash

set -e -u -o pipefail

if [[ "${#}" -lt 2 ]]; then
  echo "Usage: ${0} <path-to-jacococli.jar> [--sourcefiles-matcher=<string>] [ --classfiles-miles-matcher<string>] <source-roots>..."
  exit 1
fi

JACOCO_CLI_LOCAL="$(realpath "${1}")"
shift
SOURCEFILES_MATCHER='*/src/main/java'
CLASSFILES_MATCHER='*/target/classes'

while [ "${#}" -gt 0 ]; do
  case "${1}" in
  --sourcefiles-matcher)
    shift
    SOURCEFILES_MATCHER="${1}"
    ;;
  --classfiles-matcher)
    shift
    CLASSFILES_MATCHER="${1}"
    ;;
  *)
    break
    ;;
  esac
done

if [[ "${#}" -ne 1 ]]; then
  echo "No source roots passed."
  exit 1
fi


pushd /tmp/jacoco-export

# Generate an HTML report based on the collected data. Note that this command
# assumes that the associated source code has been compiled (i.e. that the
# `target/classes` directories are present and populated).
java -jar "${JACOCO_CLI_LOCAL}" report jacoco.exec --html report \
  $(find "${@:1}" -path "${CLASSFILES_MATCHER}" | sed 's/^/--classfiles /') \
  $(find "${@:1}" -path "${SOURCEFILES_MATCHER}" | sed 's/^/--sourcefiles /')

popd