#!/usr/bin/env bash

#

# @license Apache-2.0

#

# Copyright (c) 2017 The Stdlib Authors.

#

# Licensed under the Apache License, Version 2.0 (the "License");

# you may not use this file except in compliance with the License.

# You may obtain a copy of the License at

#

# http://www.apache.org/licenses/LICENSE-2.0

#

# Unless required by applicable law or agreed to in writing, software

# distributed under the License is distributed on an "AS IS" BASIS,

# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

# See the License for the specific language governing permissions and

# limitations under the License.

# Computes a commit size mean.

#

# References:

#

# - Riehle, Dirk, Carsten Kolassa, and Michel A. Salim. 2012. "Developer Belief vs. Reality: The Case of the Commit Size Distribution." _Software Engineering 2012, GI-Edition Lecture Notes in Informatics_ abs/1408.4644: 59–70. <http://arxiv.org/abs/1408.4644>.

# Determine root directory:

root="$(git rev-parse --show-toplevel)"

# Define the path to a utility to compute commit sizes:

commit_sizes="${root}/tools/git/scripts/commit_sizes"

# Define the path to a utility to compute the arithmetic mean:

mean="${root}/tools/awk/mean.awk"

# * `commit_sizes`

# - Compute commit sizes.

# * `mean`

# - Compute the mean.

"${commit_sizes}" | "${mean}"