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#!/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 nonempty lines in a file.
#
# <file_type> <number_of_lines> <file_path>
#
# Notes:
#
# - Results should NOT be confused with source lines of code (SLOC). This implementation measures only the number of nonempty lines.
# Determine root directory:
root="$(git rev-parse --show-toplevel)"
# Define the path to a utility to annotate a file statistic stream:
annotate_file_type="${root}/tools/git/scripts/annotate_file_type.awk"
# * `git ls-files`
# - List indexed files.
# * `xargs grep -c -v '^$'`
# - Count the number of nonempty lines within each file.
# * `sed 's//\2 \1/'`
# - Split on the file name and count separator and reverse the arguments.
# * `awk '{}'`
# - Extract `count` and `filename` columns.
# * `annotate_file_type`
# - Prefix each result with a file type.
git ls-files | xargs grep -c -v '^$' | sed 's/\(.*\):\([0-9]\{1,\}\)/\2 \1/' | awk '{print $1 OFS $2}' | awk -f "${annotate_file_type}"
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