Add minimum support for generating actual HTML files in public/

1 files changed, 97 insertions, 0 deletions

diff --git a/doc/md2html.sh b/doc/md2html.sh
new file mode 100755
index 0000000..b6d04a8
--- /dev/null
+++ b/doc/md2html.sh
@@ -0,0 +1,97 @@
+#!/bin/sh
+set -eu
+
+. src/development/lib.sh
+
+usage() {
+	cat <<-'EOF'
+		Usage:
+		  md2html.sh -T TITLE [-D TOC_DEPTH] < FILE.md
+		  md2html.sh -h
+	EOF
+}
+
+help() {
+	cat <<-'EOF'
+
+
+		Options:
+		  -T TITLE        the required title of the generated HTML
+		                  document
+		  -D TOC_DEPTH    the depth of the generated table of
+		                  contents (default: 2)
+		  -h, --help      show this message
+
+
+		Read markdown text from STDIN and emit HTML to STDOUT.
+
+
+		Examples:
+
+		  Generate the HTML from markdown using the default:
+
+		    $ md2html.sh -T 'Homepage' < index.md > index.html
+
+
+		  Pick a different TOC depth:
+
+		    $ md2html.sh -D3 -T 'TODOs' < TODOs.md > TODOs.html
+	EOF
+}
+
+
+for flag in "$@"; do
+	case "$flag" in
+		--)
+			break
+			;;
+		--help)
+			usage
+			help
+			exit
+			;;
+		*)
+			;;
+	esac
+done
+
+TOC_DEPTH=2
+while getopts 'T:D:h' flag; do
+	case "$flag" in
+		T)
+			TITLE="$OPTARG"
+			;;
+		D)
+			TOC_DEPTH="$OPTARG"
+			;;
+		h)
+			usage
+			help
+			exit
+			;;
+		*)
+			usage >&2
+			exit 2
+			;;
+	esac
+done
+shift $((OPTIND - 1))
+
+eval "$(assert_arg "${TITLE:-}" '-T TITLE')"
+
+
+HEAD="$(mkstemp)"
+trap 'rm -f "$HEAD"' EXIT
+
+cat <<-'EOF'
+	<link rel="icon"       href="favicon.svg" type="image/svg+xml" />
+	<link rel="stylesheet" href="style.css"   type="text/css" />
+EOF
+
+pandoc \
+	-s \
+	--toc                     \
+	--toc-depth="$TOC_DEPTH"  \
+	--metadata lang=pt        \
+	--metadata title="$TITLE" \
+	-H "$HEAD"