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feat(web/blog): Add Nix-based static blog generator

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This introduces a derivation which builds an instance of nginx
statically serving my blog posts, though as of now no indexes are
being generated and no XML feed is available.

This is just the initial draft of this setup and not yet what shall be
yielded in the end.
This commit is contained in:
Vincent Ambo 2020-02-08 13:33:13 +00:00
parent 1d7b1334fd
commit 15b871806b
6 changed files with 232 additions and 0 deletions
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81
web/blog/fragments.nix Normal file
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# This file defines various fragments of the blog, such as the header
# and footer, as functions that receive arguments to be templated into
# them.
#
# An entire post is rendered by `renderPost`, which assembles the
# fragments together in a runCommand execution.
#
# The post overview is rendered by 'postList'.
{ pkgs, lib, ... }:
let
inherit (builtins) filter map hasAttr replaceStrings toFile;
inherit (pkgs.third_party) runCommandNoCC writeText;
escape = replaceStrings [ "<" ">" "&" "'" ] [ "&lt;" "&gt;" "&amp;" "&#39;" ];
header = title: ''
<!DOCTYPE html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<meta name="description" content="tazjin&#39;s blog">
<link rel="stylesheet" type="text/css" href="static/blog.css" media="all">
<link rel="alternate" type="application/rss+xml" title="RSS-Feed" href="/rss.xml">
<title>tazjin&#39;s blog${lib.optionalString (title != "") (
": " + (escape title)
)}</title>
</head>
<body>
<header>
<h1><a class="unstyled-link" href="/">tazjin&#39;s blog</a> </h1>
<hr>
</header>
'';
footer = ''
<hr>
<footer>
<p class="footer">
<a class="uncoloured-link" href="https://tazj.in">homepage</a>
|
<a class="uncoloured-link" href="https://git.tazj.in/about">code</a>
|
<a class="uncoloured-link" href="https://twitter.com/tazjin">twitter</a>
</p>
<p class="lod">ಠ_ಠ</p>
</footer>
</body>
'';
renderPost = post: runCommandNoCC "${post.key}.html" {} ''
cat ${toFile "header.html" (header post.title)} > $out
# Write the actual post
echo '<article><h2 class="inline">${escape post.title}</h2>' >> $out
echo '<aside class="date">${post.date}</aside>' >> $out
cat ${post.content} | ${pkgs.tools.cheddar}/bin/cheddar --about-filter ${post.content} >> $out
echo '</article>' >> $out
cat ${toFile "footer.html" footer} >> $out
'';
# Generate a post list for all listed, non-draft posts.
isDraft = post: (hasAttr "draft" post) && post.draft;
isUnlisted = post: (hasAttr "listed" post) && !post.listed;
includePost = post: !(isDraft post) && !(isUnlisted post);
indexEntry= post: "<li>a blog post</li>";
blogIndex = posts: writeText "blog-index.html" (lib.concatStrings (
[
(header "")
"<ul>"
]
++ (map indexEntry (filter includePost posts))
++ [
"</ul>"
footer
]));
in {
inherit blogIndex renderPost;
}