src/development/frontmatter-env.sh: Generate .env file from .md frontmatter

1 files changed, 91 insertions, 0 deletions

diff --git a/src/development/frontmatter-env.sh b/src/development/frontmatter-env.sh
new file mode 100755
index 0000000..efe4f65
--- /dev/null
+++ b/src/development/frontmatter-env.sh
@@ -0,0 +1,91 @@
+#!/bin/sh
+set -eu
+. src/development/lib.sh
+
+usage() {
+	cat <<-'EOF'
+		Usage:
+		  frontmatter-env.sh < STDIN
+		  frontmatter-env.sh -h
+	EOF
+}
+
+help() {
+	cat <<-'EOF'
+
+
+		Options:
+		  -h, --help
+
+
+		Examples:
+
+		  FIXME:
+
+		    $ FIXME
+	EOF
+}
+
+for flag in "$@"; do
+	case "$flag" in
+		--)
+			break
+			;;
+		--help)
+			usage
+			help
+			exit
+			;;
+		*)
+			;;
+	esac
+done
+
+while getopts 'h' flag; do
+	case "$flag" in
+		h)
+			usage
+			help
+			exit
+			;;
+		*)
+			usage >&2
+			exit 2
+			;;
+	esac
+done
+shift $((OPTIND - 1))
+
+DELIM="$(uuid)"
+awk -vDELIM="$DELIM" -F: '
+	BEGIN {
+		separator = 0
+	}
+
+	/^---$/ {
+		separator++
+		if (separator > 1) {
+			exit
+		} else {
+			next
+		}
+	}
+
+	/^$/ { next }
+
+	{
+		printf "%s=\"$(\n\tcat <<-\"%s\"\n\t\t", $1, DELIM
+		base_index = 1
+		offset = base_index + length($1) + length(": ")
+
+		# printf "\t%s\n", substr($0, offset + quote, length($0) - offset - quote)
+		# JEKYLL_COMPAT: quoted titles because of the frontmatter
+		if ($3 != "") {
+			quote = length("\"")
+			printf "%s", substr($0, offset + quote, length($0) - offset - quote)
+		} else {
+			printf "%s", substr($0, offset)
+		}
+		printf "\n\t%s\n)\"\n\n", DELIM
+	}
+'