#!/usr/bin/env bash
remove_nbsp() {
sed 's#\ # #g'
}
date_rfc_822() {
if [[ "$OSTYPE" == "darwin"* ]]; then
date -j '+%a, %d %b %Y %H:%M:%S %z'
else
date '+%a, %d %b %Y %H:%M:%S %z'
fi
}
date_to_rfc_822() {
if [[ "$OSTYPE" == "darwin"* ]]; then
date -f "%Y-%m-%dT%H:%M:%SZ" -j '+%a, %d %b %Y %H:%M:%S %z' "$1T00:00:00Z"
else
date '+%a, %d %b %Y %H:%M:%S %z' -d "$1T00:00:00Z"
fi
}
get_header() {
HFILE="$1"
HEADER="$2"
FILTER="{ \
if (match(\$0, /^$HEADER: /)) {print substr(\$0, RLENGTH+1, length(\$0) - RLENGTH)}; \
if (\$0~/^$/) {exit}; \
if (!\$0~/^[^ ]*: .*$/) {exit}; \
}"
awk "$FILTER" "$HFILE"
}
list_items() {
DIR="$1"
pushd "$DIR" > /dev/null
find . ! -path . -type d | while read -r FN
do
PAGE="$(echo "$FN" | sed 's/^\.\///g')"
#echo "FILE: $PAGE"
MD="$PAGE/note.md"
if [ ! -f "$MD" ]; then
echo "$MD doesn't exist"
exit 1;
fi
SUBJECT="$(get_header "$MD" "Subject")"
FDATE="$(get_header "$MD" "X-Date" | sed 's/T.*$//g')"
if [ -z "$SUBJECT" ]; then
echo "No subject in $MD"
exit 1
fi
if [ -z "$FDATE" ] && [ "$NODATE" == "0" ]; then
echo "No date in $MD"
exit 1
fi
echo "$FDATE $PAGE $SUBJECT"
done
popd > /dev/null
}
render_item() {
base_url="$1"
item="$2"
site_url="$(echo "$base_url"| sed 's#\(.*//.*\)/.*#\1#')"
date=$(echo "$item"|awk '{print $1}')
url=$(echo "$item"|awk '{print $2}')
title=$(echo "$item"| cut -d ' ' -f 3- )
guid="$base_url/$(echo "$url" | sed 's#^/##')"
cat <<-EOF
-
$guid
$guid
$(date_to_rfc_822 "$date")
$title
EOF
}
render_items() {
base_url="$1"
while read -r i
do render_item "$1" "$i"
done
}
render_feed() {
url="$1"
title=$(echo "$2" | remove_nbsp)
description="$3"
base_url="$(echo "$url" | cut -d '/' -f1-3)"
cat <<-EOF
$title
$description
$base_url/
$(date_rfc_822)
$(cat)
EOF
}
list_items "$1" | sort | render_items "$2$3" | render_feed "$2" "Konstantin Nazarov" "Konstantin Nazarov's blog"