Merge pull request 'Add feed generating capabilities' (#1) from acdw/tilde.town:trunk into trunk

Reviewed-on: tildetown/tilde.town#1
2022-09-10 00:27:18 +00:00 · 2022-09-10 00:27:18 +00:00 · ccdae9cf84
parent 3feec1a252 a9a47b3bfd
commit ccdae9cf84
4 changed files with 105 additions and 1 deletions
--- a/blog.tmpl.html
+++ b/blog.tmpl.html
@ -5,6 +5,7 @@
    <meta charset="UTF-8">
    <link rel="icon" href="/favicon.ico">
    <link rel="stylesheet" href="blog.css">
+    <link rel="alternative" type="application/rss+xml" href="blog.xml">
 	</head>
 	<body>
    <table>
--- a/feed.tmpl.xml
+++ b/feed.tmpl.xml
@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom">
+  <channel>
+    <title>tilde.town blog</title>
+    <description>web log of tilde town</description>
+    <link>https://tilde.town/blog.html</link>
+    <atom:link rel="self" type="application/rss+xml" href="https://tilde.town/blog.xml"/>
+    {{ range .News }}
+    <item>
+      <title>{{.Title}}</title>
+      <pubDate>{{.Pubdate}}</pubDate>
+      <description>
+        <![CDATA[{{.Content}}]]>
+      </description>
+      <guid isPermalink="false">{{.Pubdate}}-{{.Title}}</guid>
+    </item>
+    {{ end }}
+  </channel>
+</rss>
--- a/3
+++ b/3
@ -6,5 +6,6 @@ set -e

 cd /town/src/tilde.town
 /usr/bin/go run genblog.go > blog.html
+/usr/bin/go run genfeed.go > blog.xml
 /usr/bin/go run genusers.go > users.html
-/bin/cp index.html blog.html users.html blog.css style.css /var/www/tilde.town/
+/bin/cp index.html blog.html blog.xml users.html blog.css style.css /var/www/tilde.town/
--- a/genfeed.go
+++ b/genfeed.go
@ -0,0 +1,83 @@
+package main
+
+import (
+	"bytes"
+	_ "embed"
+	"encoding/json"
+	"fmt"
+	"os"
+	"os/exec"
+	"text/template"
+)
+
+const statsPath = "/usr/local/bin/stats"
+
+//go:embed feed.tmpl.xml
+var feedTmpl string
+
+type newsEntry struct {
+	Title   string // Title of entry
+	Pubdate string // Human readable date
+	Content string // HTML of entry
+}
+
+type tildeData struct {
+	News        []newsEntry
+}
+
+func _main() error {
+	data, err := stats()
+	if err != nil {
+		return err
+	}
+
+	type tmplData struct {
+		News   []newsEntry
+	}
+
+	td := &tmplData{
+		News:   data.News,
+	}
+
+	t, err := template.New("feed").Parse(feedTmpl)
+	if err != nil {
+		return fmt.Errorf("failed to parse the feed template: %w", err)
+	}
+
+	out := bytes.Buffer{}
+	if err = t.Execute(&out, td); err != nil {
+		return fmt.Errorf("failed to render feed template: %w", err)
+	}
+
+	fmt.Println(out.String())
+
+	return nil
+}
+
+func stats() (*tildeData, error) {
+	sout := bytes.Buffer{}
+	cmd := exec.Command(statsPath)
+	cmd.Stdout = &sout
+
+	err := cmd.Run()
+	if err != nil {
+		return nil, err
+	}
+
+	var data tildeData
+
+	err = json.Unmarshal(sout.Bytes(), &data)
+	if err != nil {
+		return nil, err
+	}
+
+	return &data, nil
+}
+
+func main() {
+	err := _main()
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "error: %s\n", err)
+		os.Exit(1)
+	}
+}