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|
#!/bin/sh
set -euo pipefail
usage() {
echo 'Usage: conf BASECONF [GLOBALCONF FILENAME.adoc]'
}
needs() {
if [ -z "${1:-}" ]; then
printf '%s\n' "$2" >&2
exit 1
fi
}
DATE_I='+%Y-%m-%d'
DATE_Is="${DATE_I}T%H:%M:%S%:z"
datex() {
# date(1), plus non-POSIX -d option
DATESTR="$1"
shift
date -d "$DATESTR" "$@"
}
dateiso() {
datex "$1" -u "$DATE_Is"
}
BASECONF="${1:-}"
GLOBALCONF="${2:-}"
FILENAME="${3:-}"
eval "$(assert-arg -- "$BASECONF" 'BASECONF')"
. "$(realpath -- "$BASECONF")"
needs "${url_pre:-}" 'Missing required $url_pre (e.g. https://example.com)'
needs "${site_name:-}" 'Missing required $site_name'
needs "${feed_title:-}" 'Missing required $feed_title'
needs "${feed_url:-}" 'Missing required $feed_url'
needs "${feed_alternate_url:-}" 'Missing required $feed_alternate_url'
needs "${list_addr:-}" 'Missing required $list_addr'
needs "${discussions_url_prefix:-}" 'Missing required $discussions_url_prefix'
needs "${email:-}" 'Missing required $email'
needs "${author:-}" 'Missing required $author'
needs "${sourcecode_url:-}" 'Missing required $sourcecode_url'
needs "${sourcecode_url_prefix:-}" 'Missing required $sourcecode_url_prefix'
if [ -z "$GLOBALCONF" ]; then
now_iso="$(dateiso "@${SOURCE_DATE_EPOCH:-$(date '+%s')}" | shesc)"
feed_title_html="$(printf '%s\n' "$feed_title" | htmlesc | shesc)"
site_name_html="$( printf '%s\n' "$site_name" | htmlesc | shesc)"
if [ -z "${logo_alt:-}" ]; then
logo_alt='The website logo'
fi
logo_alt="$(printf '%s\n' "$logo_alt" | htmlesc | shesc)"
cat <<-EOF
export now_iso="$now_iso"
export feed_title_html="$feed_title_html"
export site_name_html="$site_name_html"
export feed_url_absolute="$url_pre/$feed_url"
export feed_alternate_url_absolute="$url_pre/$feed_alternate_url"
export logo_alt="$logo_alt"
EOF
exit
fi
eval "$(assert-arg -- "$BASECONF" 'BASECONF')"
eval "$(assert-arg -- "$FILENAME" 'FILENAME')"
. "$(realpath -- "$GLOBALCONF")"
trap 'rm -f -- "$FILENAME".embedded-config' EXIT
{
if head -n1 -- "$FILENAME" | grep -q '^////$'; then
awk 'sep > 1 {exit}; /^\/{4}$/ { sep++; next } { print }' \
"$FILENAME"
fi
} > "$FILENAME".embedded-config
. "$(realpath -- "$FILENAME".embedded-config)"
is_article() {
printf '%s\n' "$FILENAME" | grep -qE \
"^${root_dir}[-a-zA-Z0-9/]*/[0-9]{4}/[0-9]{2}/[0-9]{2}/[-A-Za-z0-9]+\.adoc$"
#^ src /blog/d/a /1970 /01 /01/ /some-file-N4me.adoc
}
base_url() {
# src/sub/dirs/file.txt -> ../..
# src/file.txt -> .
printf '%s/\n' "$(dirname -- "$UNPREFIXED")" |
sed \
-e 's|[^/]*/|../|g' \
-e 's|/$||' \
-e 's|^\.\.$|.|'
}
last3dirnames() {
dirname -- "$UNPREFIXED" | tr '/' '\n' | tail -n3 | paste -sd-
}
datefmt() {
LANG=en_GB.UTF-8 datex "$1" -u '+%B %-d, %Y'
}
if [ -z "${root_dir:-}" ]; then
root_dir="$(dirname -- "$BASECONF")"
fi
root_dir="${root_dir%/}"
if [ -z "${img_dir:-}" ]; then
img_dir=img
fi
img_dir="${img_dir%/}"
UNPREFIXED="${FILENAME#$root_dir/}"
cat "$BASECONF" "$GLOBALCONF"
date_iso=
date_formatted=
updatedat_iso=
updatedat_formatted=
if is_article; then
date_iso="$(dateiso "$(last3dirnames)" | shesc)"
date_formatted="$(datefmt "$date_iso" | shesc)"
if [ -n "${updatedat:-}" ]; then
updatedat_iso="$(dateiso "$updatedat" | shesc)"
updatedat_formatted="$(datefmt "$updatedat_iso" | shesc)"
fi
fi
BASE_URL="$(base_url)"
TITLE_RAW="$(cat -- "$FILENAME" | grep '^= .*' | head -n1 | cut -d' ' -f2-)"
TITLEFULL_RAW="$TITLE_RAW | $site_name"
if [ -z "${css_url:-}" ]; then
css_url="$BASE_URL/style.css"
fi
if [ -z "${atom_url:-}" ]; then
atom_url="$BASE_URL/atom.xml"
fi
if [ -z "${atomicon_url:-}" ]; then
needs "${img_dir:-}" 'Define either $atomicon_url or $img_dir'
atomicon_url="$BASE_URL/$img_dir/atom.svg"
fi
if [ -z "${favicon_url:-}" ]; then
needs "${img_dir:-}" 'Define either $favicon_url or $img_dir'
favicon_url="$BASE_URL/$img_dir/favicon.svg"
fi
if [ -z "${logo_url_prefix:-}" ]; then
needs "${img_dir:-}" 'Define either $logo_url_prefix or $img_dir'
logo_url_prefix="$BASE_URL/$img_dir/logo"
fi
if [ -z "${envelopeicon_url_prefix:-}" ]; then
needs "${img_dir:-}" 'Define either $envelopeicon_url_prefix or $img_dir'
envelopeicon_url_prefix="$BASE_URL/$img_dir/envelope"
fi
title_uri="$(printf '%s' "$TITLE_RAW" | uri)"
comment_url="$(printf 'mailto:%s?Subject=Re%%3A%%20%s\n' "$list_addr" "$title_uri" | shesc)"
discussions_url="$(printf '%s%s\n' "$discussions_url_prefix" "$title_uri" | shesc)"
url="$(printf '%s\n' "${UNPREFIXED%.adoc}.html" | shesc)"
css_url="$( printf '%s\n' "$css_url" | shesc)"
atom_url="$( printf '%s\n' "$atom_url" | shesc)"
atomicon_url="$( printf '%s\n' "$atomicon_url" | shesc)"
favicon_url="$( printf '%s\n' "$favicon_url" | shesc)"
logo_url_prefix="$( printf '%s\n' "$logo_url_prefix" | shesc)"
envelopeicon_url_prefix="$(printf '%s\n' "$envelopeicon_url_prefix" | shesc)"
source_path="$(printf '%s\n' "$FILENAME" | shesc)"
base_url_prefix="$(printf '%s\n' "$BASE_URL" | shesc)"
title="$( printf '%s\n' "$TITLE_RAW" | shesc)"
title_html="$( printf '%s\n' "$TITLE_RAW" | htmlesc | shesc)"
titlefull="$( printf '%s\n' "$TITLEFULL_RAW" | shesc)"
titlefull_html="$(printf '%s\n' "$TITLEFULL_RAW" | htmlesc | shesc)"
cat <<-EOF
export css_url="$css_url"
export atom_url="$atom_url"
export atomicon_url="$atomicon_url"
export favicon_url="$favicon_url"
export logo_url_prefix="$logo_url_prefix"
export envelopeicon_url_prefix="$envelopeicon_url_prefix"
export source_path="$source_path"
export url="$url"
export url_absolute="$url_pre/$url"
export base_url_prefix="$base_url_prefix"
export title="$title"
export title_html="$title_html"
export titlefull="$titlefull"
export titlefull_html="$titlefull_html"
export date_iso="$date_iso"
export date_formatted="$date_formatted"
export updatedat_iso="$updatedat_iso"
export updatedat_formatted="$updatedat_formatted"
export comment_url="$comment_url"
export discussions_url="$discussions_url"
EOF
cat "$FILENAME".embedded-config
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