dir-make

#!/bin/sh -e

md2html() {
    grep -v '^:' "$1" |
        lowdown -M css:./style.css -s -Thtml > "$2"
}

tex2html() {
    base="$(echo "$1" | cut -d'.' -f1)"
    make4ht -x "$1" > /dev/null
    sed "s/$base.css/style.css/" "$base.html" > _
    mv -f _ "$base.html"
    find . -type f -name "$base*" |
        grep -vE "(tex|html)" |
        xargs rm
}

org2html() {
    emacs --batch --eval "(require 'org)" \
        "$1" --funcall org-html-export-to-html
}

case "$1" in
    clean)
        if ls | grep -E -q '.html$'; then
            rm -v -- *.html
        fi
        ;;
    *)
        if ls | grep -E -q ".tex$"; then
            for a in *.tex; do
                tex2html "$a"
            done
        fi
        if ls | grep -E -q ".org$"; then
            for a in *.org; do
                org2html "$a"
            done
        fi
        if ls | grep -v about.md | grep -E -q '.md'; then
            for a in *.md; do
                case "$a" in
                    about.md) ;;
                    *)
                        base=$(echo "$a" | cut -d'.' -f1)
                        md2html "$a" "$base.html"
                        ;;
                esac
            done
        fi
        ;;
esac