1
0
Fork 0
mirror of https://git.sr.ht/~seirdy/seirdy.one synced 2024-12-25 10:12:10 +00:00
seirdy.one/scripts/xhtmlize-single-file.sh
Rohan Kumar dc2b049eb3
xhtmlize: avoid race between parallel jobs
Prevent parallel jobs from accessing the same tmp.css
2022-08-01 20:54:25 -07:00

50 lines
2 KiB
Bash

#!/bin/sh
# copies an .html file to an equivalent .xhtml file, but replaces
# the meta charset with an XML declaration for compatibility with some
# XML tooling.
# Expects polygot XHTML(5) markup.
# Formats both the .html and .xhtml file.
# this means that every index.html file has an equivalent index.xhtml file.
# content negotiation allows an agent to pick html or xhtml.
# use xmllint to do the formatting.
# xmllint ruins inline CSS so delete the inline CSS and re-insert it.
# xmllint also adds extra whitespace around <pre><code> which we remove
# with "sd". I chose sd since it handles newlines well.
# It also decreases indents by one level
set -e -u
html_file="$1"
tmp_file="$html_file.tmp"
xhtml_file=${html_file%*.html}.xhtml
cleanup() {
rm -f "$tmp_file"
}
trap cleanup EXIT
# delete the stylesheet from the html file; we'll re-insert it later.
# Also remove two indentation levels
sed 7d "$html_file" | xmllint --format --encode UTF-8 --noent - | sd '^\t(?:\t)?' '' >"$tmp_file"
{
head -n7 "$tmp_file" | sd -s '/>' ' />'
cat "$OUTPUT_DIR/tmp.css"
# shellcheck disable=SC2016 # these are regex statements, not shell expressions
tail -n +8 "$tmp_file" \
| sd '<pre(?: tabindex="0")?>\n\t*<(code|samp)( |>)' '<pre tabindex="0"><$1$2' \
| sd '(?:\n)?</(code|samp)>\n(?:[\t\s]*)?</pre>' '</$1></pre>' \
| sd '</span>.span itemprop="familyName"' '</span> <span itemprop="familyName"' \
| sd '(</picture>|src="[^"]*" ?/>)<span itemprop="name" class="p-name fn n">' '$1 <span itemprop="name" class="p-name fn n">' \
| sd '([a-z])<(data|time)' '$1 <$2' \
| sd '</span>(<a[^>]*rel="(?:nofollow ugc|ugc nofollow)"(?:[^>]*)?>liked</a>)' '</span> $1' \
| sd -s '/>' ' />'
} >>"$xhtml_file"
# replace the html file with the formatted xhtml5 file, excluding the
# XML declaration.
tail -n +2 "$xhtml_file" > "$html_file"
# remove the redundant charset declaration from the xhtml file. It's the
# first thing in the <head>.
sed -i 5d "$xhtml_file" # busybox sed supports "-i"