#!/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.

# Prints the number of files changed per hour.

#

# <hour> <files_changed>

# 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 '{}'`

# - Tabulate the hourly totals.

# * `sort -n`

# - Sort in numerical order.

"${shortstats}" | awk '

{

split($4, time, ":")

hr = time[1]

lines[hr] += $8

}

END {

for (hr in lines) {

print hr OFS lines[hr]

}

}

' | sort -n