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|
#!/bin/sh
set -eu
usage() {
cat <<-'EOF'
Usage:
extract -t TYPE FILENAME
extract -h
EOF
}
help() {
cat <<-'EOF'
Options:
-t TYPE the type of extraction to perform ("content" or "env")
-h, --help show this message
FILENAME the name of the input file, also to be used as
URL.
Separate the content from the "frontmatter", and emit the
selected one, given the FILENAME.
Examples:
Get the content:
$ extract -t content src/file.md > src/file.entry-content
Get the "frontmatter":
$ extract -t env src/f.md > src/f.entry-env
EOF
}
for flag in "$@"; do
case "$flag" in
--)
break
;;
--help)
usage
help
exit
;;
*)
;;
esac
done
TYPE=''
while getopts 't:h' flag; do
case "$flag" in
t)
TYPE="$OPTARG"
;;
h)
usage
help
exit
;;
*)
usage >&2
exit 2
;;
esac
done
shift $((OPTIND - 1))
FILENAME="${1:-}"
eval "$(assert-arg "$FILENAME" 'FILENAME')"
eval "$(assert-arg "$TYPE" '-t TYPE')"
case "$TYPE" in
content)
. "${FILENAME%.md}.entry-env"
printf '%s\n' "$PREAMBLE"
awk '
separator >= 2
/^---$/ { separator++ }
' "$FILENAME"
;;
env)
cat src/development/config.env
awk '
/^---$/ {
if (++separator > 1) {
exit
} else {
next
}
}
{ print }
' "$FILENAME"
printf "FILENAME='%s'\n" "$FILENAME"
cat <<-'REAL_EOF'
TITLE="${TITLE:-$SITE_NAME}"
URI_TITLE="$(printf '%s' "$TITLE" | uri)"
URL="$(
printf '%s' "$FILENAME" |
sed \
-e 's|^src/content/||' \
-e 's|md$|html|'
)"
PREAMBLE="$(cat <<EOF
# $TITLE
<p class="timestamp">
Posted on <time datetime="$DATE">$(LANG="$LANGUAGE" date -d "$DATE" "$DATE_FMT")</time>
</p>
EOF
)"
REAL_EOF
;;
*)
printf 'Bad value for TYPE: "%s".\n\n' \
"$TYPE" >&2
usage >&2
exit 2
;;
esac
|
