site: add the basis

author: Alejandro Sior <aho@sior.be> 2022-08-31 20:28:57 +0200
committer: Alejandro Sior <aho@sior.be> 2022-08-31 20:28:57 +0200
commit: 1ccd4c87136091e7a71f05c8660849552e0dba36 (patch)
tree: dd036ea4e5a9ae15dadd513d75895c41d6b68c59
8 files changed, 229 insertions, 0 deletions
diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..329e56d
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,3 @@
+module github.com/aosync/site
+
+go 1.19
diff --git a/localhost:8080/.index b/localhost:8080/.index
new file mode 100644
index 0000000..d35e674
--- /dev/null
+++ b/localhost:8080/.index
@@ -0,0 +1,57 @@
+<html>
+	<title>aosync</title>
+	<link href='data:image/gif;base64,R0lGODlhEAAQAPH/AAAAAP8AAP8AN////yH5BAUAAAQALAAAAAAQABAAAAM2SLrc/jA+QBUFM2iqA2bAMHSktwCCWJIYEIyvKLOuJt+wV69ry5cfwu7WCVp2RSPoUpE4n4sEADs=' rel=icon>
+	<style>
+		body {
+			padding: 5px 10px 5px 15px;
+			
+			background-color: rgb(235, 233, 253);
+			color: rgb(44, 42, 58);
+			
+			font-size: 17px;
+			font-family: 'Times New Roman', Times, serif;
+		}
+		
+		nav {
+			display: inline-flex;
+			font-family: monospace;
+		}
+		nav li {
+			font-size: 15px;
+			list-style-type: none;
+			list-style-position: outside;
+		}
+		nav a {
+			text-decoration: none;
+			font-weight: bold;
+			color: inherit;
+		}
+		nav > * {
+			padding-left: 0px;
+			padding-right: 35px;
+		}
+	
+		.nav-intended {
+			font-style: oblique;
+		}
+		
+		pre {
+			border-radius: 6px;
+			background-color: rgb(201, 199, 219);
+			padding: 12px;
+		}
+		code {
+			font-family: monospace;
+		}
+		
+		article {
+			margin-top: 8px;
+		}
+	</style>
+	<body>
+	<header><nav><a href="/"><h1 id="title">site</h1><h3 id="subtitle"></h3></a>{{ nav }}</nav></header>
+	<article class="rest">
+		{{ post }}
+	</article>
+	</body>
+</html>
+\ No newline at end of file
diff --git a/localhost:8080/.view b/localhost:8080/.view
new file mode 100644
index 0000000..45d9e3b
--- /dev/null
+++ b/localhost:8080/.view
@@ -0,0 +1,3 @@
+<h2>site is a simple static site generator</h2>
+
+<p>This sample website serves as a usage reference.</p>
+\ No newline at end of file
diff --git a/localhost:8080/about b/localhost:8080/about
new file mode 100644
index 0000000..c4c593f
--- /dev/null
+++ b/localhost:8080/about
@@ -0,0 +1 @@
+<p><em>site</em> and this template are inspired by <a href="https://werc.cat-v.org/docs/">werc</a> and <a href="https://wiki.xxiivv.com/site/home.html">XXIIVV</a>. I found that these models of personal website organisations are well suited to lay out notes about varieties of subjects.</p>
+\ No newline at end of file
diff --git a/localhost:8080/docs/.view b/localhost:8080/docs/.view
new file mode 100644
index 0000000..d8c8fec
--- /dev/null
+++ b/localhost:8080/docs/.view
@@ -0,0 +1 @@
+<p>This directory holds a few notes about <em>site</em> concepts.</p>
+\ No newline at end of file
diff --git a/localhost:8080/docs/index b/localhost:8080/docs/index
new file mode 100644
index 0000000..30610a5
--- /dev/null
+++ b/localhost:8080/docs/index
@@ -0,0 +1,12 @@
+<h3><code>.index</code> is the template of children pages in the subtree</h3>
+
+<p>When a directory contains a file named <code>.index</code>, all files in children directories are going to use it as template.</p>
+
+<p>An <code>.index</code> file is a normal html file, except that a few templates get replaced by the server generated content:
+<ul>
+<li><code>{&zwnj;{ post }}</code> gets replaced by the content of the post resolved by the HTML path</li>
+<li><code>{&zwnj;{ nav }}</code> gets replaced by the server generated navbar, which is to be placed anywhere. This template places it next to the title</li>
+</ul>
+</p>
+
+<p>The role of <code>.index</code> is thus to structure and composite in a relatively minimalistic manner the componants that make up a page of the site.</p>
+\ No newline at end of file
diff --git a/localhost:8080/docs/view b/localhost:8080/docs/view
new file mode 100644
index 0000000..ced1356
--- /dev/null
+++ b/localhost:8080/docs/view
@@ -0,0 +1,3 @@
+<h3><code>.view</code> is the default page rendered in a directory</h3>
+
+<p>It can be used to provide a summary of what to expect in the subdirectories</p>
+\ No newline at end of file
diff --git a/site.go b/site.go
new file mode 100644
index 0000000..46e6cee
--- /dev/null
+++ b/site.go
@@ -0,0 +1,149 @@
+package main
+
+import (
+	"os"
+	"io/ioutil"
+	"net/http"
+	"path"
+	"path/filepath"
+	"strings"
+)
+
+const staticPrefix = "/static/"
+
+type NavTree struct {
+	name string
+	path string
+	children []NavTree
+	hasIndex bool
+	selected bool
+}
+
+func stripPath(caminho string) string {
+	caminho = path.Clean(caminho)
+	return "/" + path.Join(strings.Split(caminho, "/")[1:]...)
+}
+
+func rootTree(root string, goal string) (NavTree, string) {
+	nav := NavTree{}
+	nav.name = path.Base(root)
+	nav.path = root
+	nav.selected = false
+	
+	index := ""
+
+	if !strings.HasPrefix(goal, root) {
+		return nav, index
+	}
+	
+	nav.selected = true
+
+	filepath.Walk(root, func(current string, info os.FileInfo, err error) error {
+		if info.Name() == ".index" {
+			index = current
+		}
+		
+		if current == root || info.Name()[0] == '.'  {
+			return nil
+		}
+		
+		rec, idx := rootTree(current, goal)
+		if idx != "" {
+			index = idx
+		}
+		
+		nav.children = append(nav.children, rec)
+
+		if info.IsDir() {
+			return filepath.SkipDir
+		} else {
+			return nil
+		}
+	})
+
+	return nav, index
+}
+
+func RenderList(children []NavTree) string {
+	deleg := ""
+	ul := "<ul>"
+	for _, s := range children {
+		u, d := s.Render()
+		ul += u
+		deleg += d
+	}
+	ul += "</ul>"
+	ul += deleg
+	return ul
+}
+
+func (v *NavTree) Render() (string, string) {
+	li := "<li><a href=\"" + stripPath(v.path) + "\">"
+	if v.selected {
+		li += "<span class=\"nav-intended\">"
+	} else {
+		li += "<span class=\"nav-not-intended\">"
+	}
+	li += v.name
+	li += "</span></a></li>"
+	
+	deleg := ""
+
+	if len(v.children) > 0 {
+		deleg += RenderList(v.children)
+	}
+	
+	return li, deleg
+}
+
+func build(request *http.Request) (string, int) {
+	code := 200
+	root := request.Host
+	postLoc := path.Join(root, request.URL.Path)
+	
+	if strings.HasPrefix(request.URL.Path, staticPrefix) {
+		staticLoc := path.Join(root, request.URL.Path[len(staticPrefix):])
+		static, err0 := ioutil.ReadFile(staticLoc)
+		if err0 != nil {
+			return "Path not  found", 404
+		}
+		
+		return string(static), 200
+	}
+	
+	tr, idx := rootTree(root, postLoc)
+	template, err0 := ioutil.ReadFile(idx)
+	if err0 != nil {
+		return "No template in tree", 500
+	}
+
+	final := string(template)
+	
+	post, err1 := ioutil.ReadFile(postLoc)
+	if err1 != nil {
+		viewLoc := path.Join(root, request.URL.Path, ".view")
+		
+		view, err1_0 := ioutil.ReadFile(viewLoc)
+		if err1_0 != nil {
+			return "Path not found", 404
+		}
+		post = view
+	}
+
+	final = strings.Replace(string(template), "{{ post }}", string(post), -1)
+	final = strings.Replace(string(final), "{{ nav }}", RenderList(tr.children), -1)
+	
+	return final, code
+}
+
+func handler(w http.ResponseWriter, r *http.Request) {
+	content, code := build(r)
+
+	w.WriteHeader(code)
+	w.Write([]byte(content))
+}
+
+func main() {
+	http.HandleFunc("/", handler)
+	http.ListenAndServe(":8080", nil)
+}
+\ No newline at end of file
author	Alejandro Sior <aho@sior.be>	2022-08-31 20:28:57 +0200
committer	Alejandro Sior <aho@sior.be>	2022-08-31 20:28:57 +0200
commit	1ccd4c87136091e7a71f05c8660849552e0dba36 (patch)
tree	dd036ea4e5a9ae15dadd513d75895c41d6b68c59