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feat: Added a stress tester so we can benchmark the template rendering.
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Spencer Brower
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@@ -0,0 +1,203 @@
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package bench
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import "core:fmt"
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import "core:mem"
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import "core:os"
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import "core:strconv"
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import "core:time"
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import "../mustache"
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Tag :: struct {
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name: string,
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slug: string,
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}
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Nav_Item :: struct {
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url: string,
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label: string,
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}
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Post :: struct {
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title: string,
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url: string,
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date: string,
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year: string,
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excerpt: string,
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author: string,
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tags: [dynamic]Tag,
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}
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Comment :: struct {
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author: string,
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date: string,
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body: string,
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}
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Page_Data :: struct {
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title: string,
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now: string,
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posts: [dynamic]Post,
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comments: [dynamic]Comment,
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nav_items: [dynamic]Nav_Item,
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}
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TEMPLATE_DIR :: #directory
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main :: proc() {
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iterations := 250
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dump_path := ""
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i := 1
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for i < len(os.args) {
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if os.args[i] == "--dump" && i + 1 < len(os.args) {
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dump_path = os.args[i + 1]
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i += 2
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} else {
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n, ok := strconv.parse_int(os.args[i])
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if ok && n > 0 {
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iterations = n
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}
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i += 1
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}
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}
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data_arena: mem.Dynamic_Arena
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mem.dynamic_arena_init(&data_arena)
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defer mem.dynamic_arena_destroy(&data_arena)
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temp_arena: mem.Dynamic_Arena
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mem.dynamic_arena_init(&temp_arena)
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defer mem.dynamic_arena_destroy(&temp_arena)
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context.allocator = mem.dynamic_arena_allocator(&data_arena)
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context.temp_allocator = mem.dynamic_arena_allocator(&temp_arena)
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base := parse_file("base.html")
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page := parse_file("page.html")
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defer mustache.delete_template(&base)
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defer mustache.delete_template(&page)
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partials := make(map[string]mustache.Template)
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partials["base"] = base
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partials["post"] = parse_file("partials/post.html")
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partials["comment"] = parse_file("partials/comment.html")
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defer mustache.delete_partials(partials)
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data := generate_data()
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if dump_path != "" {
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result, err := mustache.render(page, data, partials, allocator = context.temp_allocator)
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if err != nil {
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b := mustache.body(err)
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fmt.eprintln("render error:", b.msg)
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os.exit(1)
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}
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werr := os.write_entire_file_from_string(dump_path, result)
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if werr != nil {
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fmt.eprintln("failed to write", dump_path, ":", werr)
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os.exit(1)
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}
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fmt.println("wrote", len(result), "bytes to", dump_path)
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return
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}
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for _ in 0..<3 {
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_, _ = mustache.render(page, data, partials, allocator = context.temp_allocator)
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mem.dynamic_arena_free_all(&temp_arena)
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}
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start := time.now()
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for _ in 0..<iterations {
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_, _ = mustache.render(page, data, partials, allocator = context.temp_allocator)
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mem.dynamic_arena_free_all(&temp_arena)
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}
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elapsed := time.since(start)
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seconds := time.duration_seconds(elapsed)
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per_render_ms := seconds * 1000 / f64(iterations)
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fmt.printfln("iterations=%d total=%.3fs per_render=%.3fms",
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iterations, seconds, per_render_ms)
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}
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parse_file :: proc(name: string) -> mustache.Template {
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path := fmt.aprintf("%s/templates/%s", TEMPLATE_DIR, name)
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data, err := os.read_entire_file_from_path(path, context.allocator)
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if err != nil {
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fmt.eprintln("failed to read", path, ":", err)
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os.exit(1)
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}
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source := string(data)
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tmpl, perr := mustache.parse(source, path)
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if perr != nil {
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b := mustache.body(perr)
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fmt.eprintln("parse error in", path, ":", b.msg)
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os.exit(1)
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}
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return tmpl
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}
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generate_data :: proc() -> Page_Data {
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years := []string{
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"2025", "2024", "2023", "2022", "2021",
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"2020", "2019", "2018", "2017", "2016",
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}
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posts := make([dynamic]Post, 0, 500)
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for year in years {
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for i in 0..<50 {
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tags := make([dynamic]Tag, 0, 3)
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append(&tags, Tag{name = fmt.aprintf("%s-notes", year), slug = fmt.aprintf("%s-notes", year)})
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append(&tags, Tag{name = "writing", slug = "writing"})
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append(&tags, Tag{name = "archive", slug = "archive"})
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month := (i % 12) + 1
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day := (i % 28) + 1
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author := ""
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if i % 3 != 0 {
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author = fmt.aprintf("Author %d", i % 5)
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}
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append(&posts, Post{
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title = fmt.aprintf("Post %d from %s", i, year),
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url = fmt.aprintf("/%s/post-%d", year, i),
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date = fmt.aprintf("%s-%02d-%02dT10:00:00Z", year, month, day),
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year = year,
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excerpt = "Lorem ipsum dolor sit amet, consectetur adipiscing elit.",
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author = author,
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tags = tags,
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})
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}
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}
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comments := make([dynamic]Comment, 0, 100)
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for i in 0..<100 {
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year := years[i % len(years)]
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month := (i % 12) + 1
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day := (i % 28) + 1
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append(&comments, Comment{
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author = fmt.aprintf("Commenter %d", i),
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date = fmt.aprintf("%s-%02d-%02dT12:00:00Z", year, month, day),
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body = fmt.aprintf("Great post! This is comment number %d.", i),
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})
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}
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nav_items := make([dynamic]Nav_Item, 0, 8)
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append(&nav_items, Nav_Item{url = "/", label = "Home"})
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append(&nav_items, Nav_Item{url = "/archive", label = "Archive"})
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append(&nav_items, Nav_Item{url = "/about", label = "About"})
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append(&nav_items, Nav_Item{url = "/tags", label = "Tags"})
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append(&nav_items, Nav_Item{url = "/feed.xml", label = "RSS"})
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append(&nav_items, Nav_Item{url = "https://github.com/example", label = "GitHub"})
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append(&nav_items, Nav_Item{url = "https://twitter.com/example", label = "Twitter"})
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append(&nav_items, Nav_Item{url = "mailto:nobody@example.com", label = "Email"})
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return Page_Data{
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title = "Post Archive",
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now = "2025-07-21T12:00:00Z",
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posts = posts,
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comments = comments,
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nav_items = nav_items,
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}
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}
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@@ -0,0 +1,13 @@
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<!DOCTYPE html>
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<html>
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<head>
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<title>{{$title}}{{/title}}</title>
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{{$head}}{{/head}}
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</head>
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<body>
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{{$nav}}{{/nav}}
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{{$content}}{{/content}}
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{{$sidebar}}{{/sidebar}}
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{{$footer}}{{/footer}}
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</body>
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</html>
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@@ -0,0 +1,45 @@
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{{<base}}
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{{$title}}Archive{{/title}}
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{{$head}}
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<meta name="description" content="Post archive">
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{{/head}}
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{{$nav}}
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<nav>
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<ul>
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{{#nav_items}}
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<li><a href="{{url}}">{{label}}</a></li>
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{{/nav_items}}
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</ul>
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</nav>
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{{/nav}}
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{{$content}}
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<main>
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<h1>Archive</h1>
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{{#posts | group_by year}}
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<section class="year">
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<h2>{{key}}</h2>
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<ul>
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{{#items}}
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{{> post}}
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{{/items}}
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</ul>
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</section>
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{{/posts}}
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</main>
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{{/content}}
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{{$sidebar}}
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<aside>
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<h3>Recent Comments</h3>
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<ul>
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{{#comments}}
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{{> comment}}
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{{/comments}}
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</ul>
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</aside>
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{{/sidebar}}
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{{$footer}}
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<footer>
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<p>Generated {{now}}</p>
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</footer>
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{{/footer}}
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{{/base}}
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<li class="comment">
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<strong>{{author}}</strong>
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<time datetime="{{date}}">{{date | format}}</time>
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<p>{{body}}</p>
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</li>
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@@ -0,0 +1,9 @@
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<li class="post">
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<article>
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<h3><a href="{{url}}">{{title}}</a></h3>
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<time datetime="{{date}}">{{date | format}}</time>
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<p class="excerpt">{{excerpt}}</p>
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{{#author}}<address>{{author}}</address>{{/author}}
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{{#tags}}<a href="/tag/{{slug}}" class="tag">{{name}}</a>{{/tags}}
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</article>
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</li>
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