generate


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#!/bin/sh

base_template () {
    body_file=$(mktemp)
    cat > "$body_file"
    sed '/<!-- BODY -->/r '"$body_file" base.template.html
}

base_template_link () {
    link_href="$1"
    case $link_href in
        *.css)
            link_rel="stylesheet"
            link_type="text/css"
            ;;
        *.png)
            link_rel="icon"
            link_type="image/png"
            ;;
        *)
            echo Invalid link file
            exit 1
            ;;
    esac
    sed "/<!-- HEAD -->/i\
        <link rel=\"$link_rel\" type=\"$link_type\" href=\"$link_href\"/>"
}

# Setup
blog_path=blog
mkdir -p "$blog_path"
base_template < index.template.html |
    base_template_link 'favicon.png' |
    base_template_link 'style.css' > index.html
base_template < school.template.html |
    base_template_link 'favicon.png' |
    base_template_link 'style.css' > school.html

# Generate blog posts
for post_path in "$blog_path"/*.md
do
    post_dst_path=$(echo "$post_path" | sed 's_.md_.html_')

    pandoc -f markdown -t html < "$post_path" |
        base_template |
        base_template_link '../favicon.png' |
        base_template_link '../style.css' > "$post_dst_path"

    # Add blog artcle link to the index.html
    title=$(grep '^# .*$' -m 1 "$post_path" | cut -c 2-)
    [ -z "$title" ] && echo "post $post_path doesn't have a title" && title=$post_path

    sed -i "/<!-- BLOGINDEX -->/ a\
        <li><a href=\"$post_dst_path\">$title</a></li>" index.html

    echo "Generated post at $post_dst_path"
done

# Generate utilities
for util_path in utils/*
do
    title=$(basename "$util_path" | tr '_' ' ')
    sed '$ a <script type="text/javascript" src="script.js"></script>' < "$util_path/index.template.html" |
        base_template |
        base_template_link '../../favicon.png' |
        base_template_link '../../style.css' |
        base_template_link 'style.css' > "$util_path/index.html"
    sed -i'' "/<!-- UTILSINDEX -->/ a\
        <li><a href=\"$util_path\">$title</a></li>" index.html

    echo "Generated utility at $util_path/index.html"
done