thoughts/src/index.sh

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#!/bin/bash
# Generate index HTML page
#
# Copyright (C) 2019 Mike Gerwitz
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# The index page consists of post abstracts, some static text, and the
# static header and footer. All post metadata files must have been built,
# along with `post/list'.
#
# This script includes the static body (see `main').
##
set -euo pipefail
# Get the file name of the Nth most recent post. This relies on the
# existence of `post/list'.
pnfile()
{
local -ri n=${1?Missing relative post number}
sed "${n}q;d" post/list
}
# Read field FIELD from post metadata recfile FILE.
pmeta()
{
local -r file=${1?Missing file name}
local -r field=${2?Missing field name}
recsel -P "$field" "$file"
}
# Process each numeric argument using `abstract'. Each argument must be a
# relative post number (see `pnfile').
abstracts()
{
while [ $# -gt 0 ]; do
abstract "$1"
shift
done
}
# Generate HTML for relative post number N (see `pnfile').
abstract()
{
local -ri n=${1?Missing relative post number}
local file title date slug body
file=$( pnfile "$n" )
title=$( pmeta "$file" subject )
date=$( pmeta "$file" date )
slug=$( pmeta "$file" slug )
body=$( pmeta "$file" abstract )
cat <<EOF
<article class="abstract">
<h2 class="title"><a href="/$slug">$title</a></h2>
$body
<p class="date">Posted on $date.
<a href="/$slug">Read more &raquo;</a>
</p>
</article>
EOF
}
# Generate index HTML page.
# TODO: Factor out static sections.
main()
{
src/mkheader index
cat <<EOF
<h1 id="latest-posts">Latest Posts</h1>
<section class="asideable" aria-labelledby="latest-posts">
$( abstracts {1..2} )
</section>
<aside>
<ul class="links">
<li><a class="box free-sw" href="#">What is Free/Libre Software?</a></li>
<li><a class="box eff-privacy" href="#">EFF on Privacy</a></li>
</ul>
</aside>
<section class="highlight">
<h1 class="title">The Surreptitious Assault on Privacy, Security,
and Freedom</h1>
<aside>
Each of these essential rights are being surreptitiously
assaulted; only the most technical among us even know what to look
for, let alone how to defend ourselves. Governments, corporations,
and groups of ill-minded individuals are spying and preying upon
both users and bystanders with unprecedented frequency and
breadth.
</aside>
<a href="/talks#sapsf" class="lp-watch">Watch LibrePlanet&nbsp;2017 Talk</a>
<br clear="both" />
</section>
<section class="compact sm">
<h1 id="older-posts">Older Posts</h1>
$( abstracts {3..8} )
<a class="view-all" href="/posts">View all posts</a>
</section>
EOF
cat src/footer.tpl.htm
}
main "$@"