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43 lines
1.1 KiB
Bash
43 lines
1.1 KiB
Bash
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#!/bin/sh
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## SPDX-FileCopyrightText: 2023 Benjamin Grande M. S. <ben.grande.b@gmail.com>
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##
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## SPDX-License-Identifier: AGPL-3.0-or-later
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## Requires: https://github.com/mzlogin/vim-markdown-toc
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set -eu
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usage(){
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echo "Usage: ${0##*/} <file> [file ...]"
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exit 1
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}
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case "${1-}" in
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""|-h|--help) usage;;
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esac
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## vim-markdown-toc deletes lines if they are folded, can't rely on its native
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## update on save.
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if ! vim -e -c 'setf markdown' -c 'if !exists(":GenTocGFM") | cq | endif' -c q
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then
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echo "Error: Vim Plugin mzlogin/vim-markdown-toc is not installed." >&2
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exit 1
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fi
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for f in "$@"; do
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if ! test -f "$f"; then
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echo "Error: Not a regular file: $f" >&2
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exit 1
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fi
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if ! grep -q "^## Table of Contents$" "$f"; then
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echo "Could not find table of contents in file: $f, skipping" >&2
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continue
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fi
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## This is fragile, the table of contents should have at least one block
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## separated by an empty line before the nest heading, else it will delete
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## the rest of the file.
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vim -c 'norm zRgg' -c '/^## Table of Contents$' -c 'norm jd}k' -c ':GenTocGFM' -c 'norm ddgg' -c wq -- "${f}"
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echo "Updated TOC in file: $f"
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done
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