59 lines
987 B
Bash
59 lines
987 B
Bash
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#!/bin/bash
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set -euo pipefail
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# set -x
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HTML=${1:-}
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MARKDOWN=${2:-}
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if [ -z "$HTML" -o -z "$MARKDOWN" ]; then
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echo "Usage: $0 HTML MARKDOWN"
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exit 1
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fi
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if [ ! -f "${HTML}" ]; then
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echo "HTML file not found"
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exit 1
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fi
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if [ ! -f "${MARKDOWN}" ]; then
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echo "MARKDOWN file not found"
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exit 1
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fi
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regex='<h([2-6]) id="([^"]+)">([^<]+)</h'
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toc=''
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while read line; do
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if [[ $line =~ $regex ]]; then
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level="${BASH_REMATCH[1]}"
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id="${BASH_REMATCH[2]}"
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header="${BASH_REMATCH[3]}"
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[ -n "$toc" ] && printf -v toc "$toc\n"
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for ((i=$level-2; i>0; i--)); do toc="${toc} "; done
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toc="${toc}* [${header}](#${id})"
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fi
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done < "${HTML}"
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# fix sed on mac
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sed='sed -i'
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if [[ "$(uname)" == "Darwin" ]]; then
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sed='sed -i ""'
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fi
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ts="<\!--ts-->"
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te="<\!--te-->"
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tmp="$(mktemp)"
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function finish {
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rm "$tmp"
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}
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trap finish EXIT
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echo "${toc}" > "${tmp}"
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# clear old toc
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$sed "/${ts}/,/${te}/{//!d;}" "$MARKDOWN"
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# insert toc
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$sed "/${ts}/r ${tmp}" "$MARKDOWN"
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