#!/bin/bash
#
# Copyright 2017 The Kubernetes Authors All rights reserved.
#
# 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.
file=$1
begin_block="<!-- BEGIN MUNGE: GENERATED_TOC -->"
end_block="<!-- END MUNGE: GENERATED_TOC -->"
tmpfile=/tmp/tmp.md
declare -A count
while read level heading; do
indent="$(echo $level |sed -e "s,^#,,g" -e 's,#, ,g')"
# make a valid anchor
anchor=${heading,,}
anchor=${anchor// /-}
anchor=${anchor//[\.\?\*\,\/\[\]()]/}
# Keep track of dups and identify
if [[ -n ${count[$anchor]} ]]; then
((count[$anchor]++)) ||true
anchor+="-${count[$anchor]}"
else
# initialize value
count[$anchor]=0
fi
echo "${indent}- [$heading](#$anchor)"
done < <(egrep "^#+ " $file) > $tmpfile
# Insert new TOC
sed -ir "/^$begin_block/,/^$end_block/{
/^$begin_block/{
n
r $tmpfile
}
/^$end_block/!d
}" $file
rm -f $tmpfile