#!/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.

#

# Notes:

#

# * This is not an exact implementation of the measure described by Riehle, et al. Notably, here, the size may include empty lines, which are explicitly omitted in their measure.

#

# 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 generate commit short stats:

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

# * `shortstats`

# - Get summary statistics for each commit.

# * `awk '{}'`

# - Compute commit size.

"${shortstats}" | awk '

{

lower_bound = max($9,$10)

upper_bound = $9 + $10

print (lower_bound + upper_bound) / 2

}

function max(a, b) {

if (a > b) {

return a

}

return b

}

'