Update README.md

v0.27.0

.ameba.yml

@@ -12,3 +12,4 @@ Layout/LineLength:
   MaxLength: 80
   Excluded:
     - src/routes/api.cr
+    - spec/plugin_spec.cr

README.md

@@ -4,6 +4,9 @@
 
 [![Patreon](https://img.shields.io/badge/support-patreon-brightgreen?link=https://www.patreon.com/hkalexling)](https://www.patreon.com/hkalexling) ![Build](https://github.com/hkalexling/Mango/workflows/Build/badge.svg) [![Gitter](https://badges.gitter.im/mango-cr/mango.svg)](https://gitter.im/mango-cr/mango?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge) [![Discord](https://img.shields.io/discord/855633663425118228?label=discord)](http://discord.com/invite/ezKtacCp9Q)
 
+> [!CAUTION]
+> As of March 2025, Mango is no longer maintained. We are incredibly grateful to everyone who used it, contributed, or gave feedback along the way - thank you! Unfortunately, we just don't have the time to keep it going right now. That said, it's open source, so you're more than welcome to fork it, build on it, or maintain your own version. If you're looking for alternatives, check out the wiki for similar projects. We might return to it someday, but for now, we don't recommend using it as-is - running unmaintained software can introduce security risks.
+
 Mango is a self-hosted manga server and reader. Its features include
 
 - Multi-user support
@@ -51,7 +54,7 @@ The official docker images are available on [Dockerhub](https://hub.docker.com/r
 ### CLI
 
 ```
-  Mango - Manga Server and Web Reader. Version 0.26.1
+  Mango - Manga Server and Web Reader. Version 0.27.0
 
   Usage:
 

public/js/plugin-download.js

@@ -1,6 +1,7 @@
 const component = () => {
 	return {
 		plugins: [],
+		subscribable: false,
 		info: undefined,
 		pid: undefined,
 		chapters: undefined, // undefined: not searched yet, []: empty
@@ -60,6 +61,7 @@ const component = () => {
 				.then((data) => {
 					if (!data.success) throw new Error(data.error);
 					this.info = data.info;
+					this.subscribable = data.subscribable;
 					this.pid = pid;
 				})
 				.catch((e) => {
@@ -70,6 +72,9 @@ const component = () => {
 				});
 		},
 		pluginChanged() {
+			this.manga = undefined;
+			this.chapters = undefined;
+			this.mid = undefined;
 			this.loadPlugin(this.pid);
 			localStorage.setItem("plugin", this.pid);
 		},
@@ -140,6 +145,7 @@ const component = () => {
 			if (!query) return;
 
 			this.manga = undefined;
+			this.mid = undefined;
 			if (this.info.version === 1) {
 				this.searchChapters(query);
 			} else {

public/js/reader.js

@@ -14,6 +14,7 @@ const readerComponent = () => {
 		margin: 30,
 		preloadLookahead: 3,
 		enableRightToLeft: false,
+		fitType: 'vert',
 
 		/**
 		 * Initialize the component by fetching the page dimensions
@@ -29,14 +30,16 @@ const readerComponent = () => {
 						return {
 							id: i + 1,
 							url: `${base_url}api/page/${tid}/${eid}/${i+1}`,
-							width: d.width,
+							width: d.width == 0 ? "100%" : d.width,
-							height: d.height,
+							height: d.height == 0 ? "100%" : d.height,
 						};
 					});
 
-					const avgRatio = this.items.reduce((acc, cur) => {
+					// Note: for image types not supported by image_size.cr, the width and height will be 0, and so `avgRatio` will be `Infinity`.
+					// TODO: support more image types in image_size.cr
+					const avgRatio = dimensions.reduce((acc, cur) => {
 						return acc + cur.height / cur.width
-					}, 0) / this.items.length;
+					}, 0) / dimensions.length;
 
 					console.log(avgRatio);
 					this.longPages = avgRatio > 2;
@@ -58,11 +61,16 @@ const readerComponent = () => {
 
 					// Preload Images
 					this.preloadLookahead = +(localStorage.getItem('preloadLookahead') ?? 3);
-					const limit = Math.min(page + this.preloadLookahead, this.items.length + 1);
+					const limit = Math.min(page + this.preloadLookahead, this.items.length);
 					for (let idx = page + 1; idx <= limit; idx++) {
 						this.preloadImage(this.items[idx - 1].url);
 					}
 
+					const savedFitType = localStorage.getItem('fitType');
+					if (savedFitType) {
+						this.fitType = savedFitType;
+						$('#fit-select').val(savedFitType);
+					}
 					const savedFlipAnimation = localStorage.getItem('enableFlipAnimation');
 					this.enableFlipAnimation = savedFlipAnimation === null || savedFlipAnimation === 'true';
 
@@ -135,7 +143,11 @@ const readerComponent = () => {
 			const idx = parseInt(this.curItem.id);
 			const newIdx = idx + (isNext ? 1 : -1);
 
-			if (newIdx <= 0 || newIdx > this.items.length) return;
+			if (newIdx <= 0) return;
+			if (newIdx > this.items.length) {
+				this.showControl(idx);
+				return;
+			}
 
 			if (newIdx + this.preloadLookahead < this.items.length + 1) {
 				this.preloadImage(this.items[newIdx + this.preloadLookahead - 1].url);
@@ -253,12 +265,20 @@ const readerComponent = () => {
 			});
 		},
 		/**
-		 * Shows the control modal
+		 * Handles clicked image
 		 *
 		 * @param {Event} event - The triggering event
 		 */
-		showControl(event) {
+		clickImage(event) {
 			const idx = event.currentTarget.id;
+			this.showControl(idx);
+		},
+		/**
+		 * Shows the control modal
+		 *
+		 * @param {number} idx - selected page index
+		 */
+		showControl(idx) {
 			this.selectedIndex = idx;
 			UIkit.modal($('#modal-sections')).show();
 		},
@@ -321,6 +341,11 @@ const readerComponent = () => {
 			this.toPage(this.selectedIndex);
 		},
 
+		fitChanged(){
+			this.fitType = $('#fit-select').val();
+			localStorage.setItem('fitType', this.fitType);
+		},
+
 		preloadLookaheadChanged() {
 			localStorage.setItem('preloadLookahead', this.preloadLookahead);
 		},

shard.yml

@@ -1,5 +1,5 @@
 name: mango
-version: 0.26.1
+version: 0.27.0
 
 authors:
   - Alex Ling <hkalexling@gmail.com>

spec/asset/plugins/plugin/info.json

@@ -0,0 +1,6 @@
+{
+	"id": "test",
+	"title": "Test Plugin",
+	"placeholder": "placeholder",
+	"wait_seconds": 1
+}

spec/config_spec.cr

@@ -1,14 +1,31 @@
 require "./spec_helper"
 
 describe Config do
-  it "creates config if it does not exist" do
+  it "creates default config if it does not exist" do
-    with_default_config do |_, path|
+    with_default_config do |config, path|
       File.exists?(path).should be_true
+      config.port.should eq 9000
     end
   end
 
   it "correctly loads config" do
     config = Config.load "spec/asset/test-config.yml"
     config.port.should eq 3000
+    config.base_url.should eq "/"
+  end
+
+  it "correctly reads config defaults from ENV" do
+    ENV["LOG_LEVEL"] = "debug"
+    config = Config.load "spec/asset/test-config.yml"
+    config.log_level.should eq "debug"
+    config.base_url.should eq "/"
+  end
+
+  it "correctly handles ENV truthiness" do
+    ENV["CACHE_ENABLED"] = "false"
+    config = Config.load "spec/asset/test-config.yml"
+    config.cache_enabled.should be_false
+    config.cache_log_enabled.should be_true
+    config.disable_login.should be_false
   end
 end

spec/plugin_spec.cr

@@ -0,0 +1,70 @@
+require "./spec_helper"
+
+describe Plugin do
+  describe "helper functions" do
+    it "mango.text" do
+      with_plugin do |plugin|
+        res = plugin.eval <<-JS
+        mango.text('<a href="https://github.com">Click Me<a>');
+      JS
+        res.should eq "Click Me"
+      end
+    end
+
+    it "mango.text returns empty string when no text" do
+      with_plugin do |plugin|
+        res = plugin.eval <<-JS
+        mango.text('<img src="https://github.com" />');
+        JS
+        res.should eq ""
+      end
+    end
+
+    it "mango.css" do
+      with_plugin do |plugin|
+        res = plugin.eval <<-JS
+        mango.css('<ul><li class="test">A</li><li class="test">B</li><li>C</li></ul>', 'li.test');
+
+        JS
+        res.should eq ["<li class=\"test\">A</li>", "<li class=\"test\">B</li>"]
+      end
+    end
+
+    it "mango.css returns empty array when no match" do
+      with_plugin do |plugin|
+        res = plugin.eval <<-JS
+        mango.css('<ul><li class="test">A</li><li class="test">B</li><li>C</li></ul>', 'li.noclass');
+        JS
+        res.should eq [] of String
+      end
+    end
+
+    it "mango.attribute" do
+      with_plugin do |plugin|
+        res = plugin.eval <<-JS
+        mango.attribute('<a href="https://github.com">Click Me<a>', 'href');
+        JS
+        res.should eq "https://github.com"
+      end
+    end
+
+    it "mango.attribute returns undefined when no match" do
+      with_plugin do |plugin|
+        res = plugin.eval <<-JS
+        mango.attribute('<div />', 'href') === undefined;
+        JS
+        res.should be_true
+      end
+    end
+
+    # https://github.com/hkalexling/Mango/issues/320
+    it "mango.attribute handles tags in attribute values" do
+      with_plugin do |plugin|
+        res = plugin.eval <<-JS
+        mango.attribute('<div data-a="<img />" data-b="test" />', 'data-b');
+        JS
+        res.should eq "test"
+      end
+    end
+  end
+end

spec/spec_helper.cr

@@ -3,6 +3,7 @@ require "../src/queue"
 require "../src/server"
 require "../src/config"
 require "../src/main_fiber"
+require "../src/plugin/plugin"
 
 class State
   @@hash = {} of String => String
@@ -54,3 +55,10 @@ def with_storage
     end
   end
 end
+
+def with_plugin
+  with_default_config do
+    plugin = Plugin.new "test", "spec/asset/plugins"
+    yield plugin
+  end
+end

src/config.cr

@@ -1,31 +1,51 @@
 require "yaml"
 
 class Config
+  private OPTIONS = {
+    "host"                                => "0.0.0.0",
+    "port"                                => 9000,
+    "base_url"                            => "/",
+    "session_secret"                      => "mango-session-secret",
+    "library_path"                        => "~/mango/library",
+    "library_cache_path"                  => "~/mango/library.yml.gz",
+    "db_path"                             => "~/mango.db",
+    "queue_db_path"                       => "~/mango/queue.db",
+    "scan_interval_minutes"               => 5,
+    "thumbnail_generation_interval_hours" => 24,
+    "log_level"                           => "info",
+    "upload_path"                         => "~/mango/uploads",
+    "plugin_path"                         => "~/mango/plugins",
+    "download_timeout_seconds"            => 30,
+    "cache_enabled"                       => true,
+    "cache_size_mbs"                      => 50,
+    "cache_log_enabled"                   => true,
+    "disable_login"                       => false,
+    "default_username"                    => "",
+    "auth_proxy_header_name"              => "",
+    "plugin_update_interval_hours"        => 24,
+  }
+
   include YAML::Serializable
 
   @[YAML::Field(ignore: true)]
-  property path = ""
+  property path : String = ""
-  property host = "0.0.0.0"
+
-  property port : Int32 = 9000
+  # Go through the options constant above and define them as properties.
-  property base_url = "/"
+  #   Allow setting the default values through environment variables.
-  property session_secret = "mango-session-secret"
+  # Overall precedence: config file > environment variable > default value
-  property library_path = "~/mango/library"
+  {% begin %}
-  property library_cache_path = "~/mango/library.yml.gz"
+    {% for k, v in OPTIONS %}
-  property db_path = "~/mango/mango.db"
+        {% if v.is_a? StringLiteral %}
-  property queue_db_path = "~/mango/queue.db"
+          property {{k.id}} : String = ENV[{{k.upcase}}]? || {{ v }}
-  property scan_interval_minutes : Int32 = 5
+        {% elsif v.is_a? NumberLiteral %}
-  property thumbnail_generation_interval_hours : Int32 = 24
+          property {{k.id}} : Int32 = (ENV[{{k.upcase}}]? || {{ v.id }}).to_i
-  property log_level = "info"
+        {% elsif v.is_a? BoolLiteral %}
-  property upload_path = "~/mango/uploads"
+          property {{k.id}} : Bool = env_is_true? {{ k.upcase }}, {{ v.id }}
-  property plugin_path = "~/mango/plugins"
+        {% else %}
-  property download_timeout_seconds : Int32 = 30
+          raise "Unknown type in config option: {{ v.class_name.id }}"
-  property cache_enabled = true
+        {% end %}
-  property cache_size_mbs = 50
+    {% end %}
-  property cache_log_enabled = true
+  {% end %}
-  property disable_login = false
-  property default_username = ""
-  property auth_proxy_header_name = ""
-  property plugin_update_interval_hours : Int32 = 24
 
   @@singlet : Config?
 
@@ -38,7 +58,7 @@ class Config
   end
 
   def self.load(path : String?)
-    path = "~/.config/mango/config.yml" if path.nil?
+    path = (ENV["CONFIG_PATH"]? || "~/.config/mango/config.yml") if path.nil?
     cfg_path = File.expand_path path, home: true
     if File.exists? cfg_path
       config = self.from_yaml File.read cfg_path

src/library/archive_entry.cr

@@ -0,0 +1,111 @@
+require "yaml"
+
+require "./entry"
+
+class ArchiveEntry < Entry
+  include YAML::Serializable
+
+  getter zip_path : String
+
+  def initialize(@zip_path, @book)
+    storage = Storage.default
+    @path = @zip_path
+    @encoded_path = URI.encode @zip_path
+    @title = File.basename @zip_path, File.extname @zip_path
+    @encoded_title = URI.encode @title
+    @size = (File.size @zip_path).humanize_bytes
+    id = storage.get_entry_id @zip_path, File.signature(@zip_path)
+    if id.nil?
+      id = random_str
+      storage.insert_entry_id({
+        path:      @zip_path,
+        id:        id,
+        signature: File.signature(@zip_path).to_s,
+      })
+    end
+    @id = id
+    @mtime = File.info(@zip_path).modification_time
+
+    unless File.readable? @zip_path
+      @err_msg = "File #{@zip_path} is not readable."
+      Logger.warn "#{@err_msg} Please make sure the " \
+                  "file permission is configured correctly."
+      return
+    end
+
+    archive_exception = validate_archive @zip_path
+    unless archive_exception.nil?
+      @err_msg = "Archive error: #{archive_exception}"
+      Logger.warn "Unable to extract archive #{@zip_path}. " \
+                  "Ignoring it. #{@err_msg}"
+      return
+    end
+
+    file = ArchiveFile.new @zip_path
+    @pages = file.entries.count do |e|
+      SUPPORTED_IMG_TYPES.includes? \
+        MIME.from_filename? e.filename
+    end
+    file.close
+  end
+
+  private def sorted_archive_entries
+    ArchiveFile.open @zip_path do |file|
+      entries = file.entries
+        .select { |e|
+          SUPPORTED_IMG_TYPES.includes? \
+            MIME.from_filename? e.filename
+        }
+        .sort! { |a, b|
+          compare_numerically a.filename, b.filename
+        }
+      yield file, entries
+    end
+  end
+
+  def read_page(page_num)
+    raise "Unreadble archive. #{@err_msg}" if @err_msg
+    img = nil
+    begin
+      sorted_archive_entries do |file, entries|
+        page = entries[page_num - 1]
+        data = file.read_entry page
+        if data
+          img = Image.new data, MIME.from_filename(page.filename),
+            page.filename, data.size
+        end
+      end
+    rescue e
+      Logger.warn "Unable to read page #{page_num} of #{@zip_path}. Error: #{e}"
+    end
+    img
+  end
+
+  def page_dimensions
+    sizes = [] of Hash(String, Int32)
+    sorted_archive_entries do |file, entries|
+      entries.each_with_index do |e, i|
+        begin
+          data = file.read_entry(e).not_nil!
+          size = ImageSize.get data
+          sizes << {
+            "width"  => size.width,
+            "height" => size.height,
+          }
+        rescue e
+          Logger.warn "Failed to read page #{i} of entry #{zip_path}. #{e}"
+          sizes << {"width" => 1000_i32, "height" => 1000_i32}
+        end
+      end
+    end
+    sizes
+  end
+
+  def examine : Bool
+    File.exists? @zip_path
+  end
+
+  def self.is_valid?(path : String) : Bool
+    is_supported_file path
+  end
+end

src/library/cache.cr

@@ -76,8 +76,8 @@ class SortedEntriesCacheEntry < CacheEntry(Array(String), Array(Entry))
                    entries : Array(Entry), opt : SortOptions?)
     entries_sig = Digest::SHA1.hexdigest (entries.map &.id).to_s
     user_context = opt && opt.method == SortMethod::Progress ? username : ""
-    sig = Digest::SHA1.hexdigest (book_id + entries_sig + user_context +
+    sig = Digest::SHA1.hexdigest(book_id + entries_sig + user_context +
-                                  (opt ? opt.to_tuple.to_s : "nil"))
+                                 (opt ? opt.to_tuple.to_s : "nil"))
     "#{sig}:sorted_entries"
   end
 end
@@ -101,8 +101,8 @@ class SortedTitlesCacheEntry < CacheEntry(Array(String), Array(Title))
   def self.gen_key(username : String, titles : Array(Title), opt : SortOptions?)
     titles_sig = Digest::SHA1.hexdigest (titles.map &.id).to_s
     user_context = opt && opt.method == SortMethod::Progress ? username : ""
-    sig = Digest::SHA1.hexdigest (titles_sig + user_context +
+    sig = Digest::SHA1.hexdigest(titles_sig + user_context +
-                                  (opt ? opt.to_tuple.to_s : "nil"))
+                                 (opt ? opt.to_tuple.to_s : "nil"))
     "#{sig}:sorted_titles"
   end
 end

src/library/dir_entry.cr

@@ -0,0 +1,132 @@
+require "yaml"
+
+require "./entry"
+
+class DirEntry < Entry
+  include YAML::Serializable
+
+  getter dir_path : String
+
+  @[YAML::Field(ignore: true)]
+  @sorted_files : Array(String)?
+
+  @signature : String
+
+  def initialize(@dir_path, @book)
+    storage = Storage.default
+    @path = @dir_path
+    @encoded_path = URI.encode @dir_path
+    @title = File.basename @dir_path
+    @encoded_title = URI.encode @title
+
+    unless File.readable? @dir_path
+      @err_msg = "Directory #{@dir_path} is not readable."
+      Logger.warn "#{@err_msg} Please make sure the " \
+                  "file permission is configured correctly."
+      return
+    end
+
+    unless DirEntry.is_valid? @dir_path
+      @err_msg = "Directory #{@dir_path} is not valid directory entry."
+      Logger.warn "#{@err_msg} Please make sure the " \
+                  "directory has valid images."
+      return
+    end
+
+    size_sum = 0
+    sorted_files.each do |file_path|
+      size_sum += File.size file_path
+    end
+    @size = size_sum.humanize_bytes
+
+    @signature = Dir.directory_entry_signature @dir_path
+    id = storage.get_entry_id @dir_path, @signature
+    if id.nil?
+      id = random_str
+      storage.insert_entry_id({
+        path:      @dir_path,
+        id:        id,
+        signature: @signature,
+      })
+    end
+    @id = id
+
+    @mtime = sorted_files.map do |file_path|
+      File.info(file_path).modification_time
+    end.max
+    @pages = sorted_files.size
+  end
+
+  def read_page(page_num)
+    img = nil
+    begin
+      files = sorted_files
+      file_path = files[page_num - 1]
+      data = File.read(file_path).to_slice
+      if data
+        img = Image.new data, MIME.from_filename(file_path),
+          File.basename(file_path), data.size
+      end
+    rescue e
+      Logger.warn "Unable to read page #{page_num} of #{@dir_path}. Error: #{e}"
+    end
+    img
+  end
+
+  def page_dimensions
+    sizes = [] of Hash(String, Int32)
+    sorted_files.each_with_index do |path, i|
+      data = File.read(path).to_slice
+      begin
+        data.not_nil!
+        size = ImageSize.get data
+        sizes << {
+          "width"  => size.width,
+          "height" => size.height,
+        }
+      rescue e
+        Logger.warn "Failed to read page #{i} of entry #{@dir_path}. #{e}"
+        sizes << {"width" => 1000_i32, "height" => 1000_i32}
+      end
+    end
+    sizes
+  end
+
+  def examine : Bool
+    existence = File.exists? @dir_path
+    return false unless existence
+    files = DirEntry.image_files @dir_path
+    signature = Dir.directory_entry_signature @dir_path
+    existence = files.size > 0 && @signature == signature
+    @sorted_files = nil unless existence
+
+    # For more efficient, update a directory entry with new property
+    # and return true like Title.examine
+    existence
+  end
+
+  def sorted_files
+    cached_sorted_files = @sorted_files
+    return cached_sorted_files if cached_sorted_files
+    @sorted_files = DirEntry.sorted_image_files @dir_path
+    @sorted_files.not_nil!
+  end
+
+  def self.image_files(dir_path)
+    Dir.entries(dir_path)
+      .reject(&.starts_with? ".")
+      .map { |fn| File.join dir_path, fn }
+      .select { |fn| is_supported_image_file fn }
+      .reject { |fn| File.directory? fn }
+      .select { |fn| File.readable? fn }
+  end
+
+  def self.sorted_image_files(dir_path)
+    self.image_files(dir_path)
+      .sort { |a, b| compare_numerically a, b }
+  end
+
+  def self.is_valid?(path : String) : Bool
+    image_files(path).size > 0
+  end
+end

src/library/entry.cr

@@ -1,66 +1,55 @@
 require "image_size"
-require "yaml"
 
-class Entry
+private def node_has_key(node : YAML::Nodes::Mapping, key : String)
-  include YAML::Serializable
+  node.nodes
+    .map_with_index { |n, i| {n, i} }
+    .select(&.[1].even?)
+    .map(&.[0])
+    .select(YAML::Nodes::Scalar)
+    .map(&.as(YAML::Nodes::Scalar).value)
+    .includes? key
+end
 
-  getter zip_path : String, book : Title, title : String,
+abstract class Entry
-    size : String, pages : Int32, id : String, encoded_path : String,
+  getter id : String, book : Title, title : String, path : String,
-    encoded_title : String, mtime : Time, err_msg : String?
+    size : String, pages : Int32, mtime : Time,
+    encoded_path : String, encoded_title : String, err_msg : String?
 
-  @[YAML::Field(ignore: true)]
+  def initialize(
-  @sort_title : String?
+    @id, @title, @book, @path,
+    @size, @pages, @mtime,
+    @encoded_path, @encoded_title, @err_msg
+  )
+  end
 
-  def initialize(@zip_path, @book)
+  def self.new(ctx : YAML::ParseContext, node : YAML::Nodes::Node)
-    storage = Storage.default
+    unless node.is_a? YAML::Nodes::Mapping
-    @encoded_path = URI.encode @zip_path
+      raise "Unexpected node type in YAML"
-    @title = File.basename @zip_path, File.extname @zip_path
-    @encoded_title = URI.encode @title
-    @size = (File.size @zip_path).humanize_bytes
-    id = storage.get_entry_id @zip_path, File.signature(@zip_path)
-    if id.nil?
-      id = random_str
-      storage.insert_entry_id({
-        path:      @zip_path,
-        id:        id,
-        signature: File.signature(@zip_path).to_s,
-      })
     end
-    @id = id
+    # Doing YAML::Any.new(ctx, node) here causes a weird error, so
-    @mtime = File.info(@zip_path).modification_time
+    #   instead we are using a more hacky approach (see `node_has_key`).
-
+    # TODO: Use a more elegant approach
-    unless File.readable? @zip_path
+    if node_has_key node, "zip_path"
-      @err_msg = "File #{@zip_path} is not readable."
+      ArchiveEntry.new ctx, node
-      Logger.warn "#{@err_msg} Please make sure the " \
+    elsif node_has_key node, "dir_path"
-                  "file permission is configured correctly."
+      DirEntry.new ctx, node
-      return
+    else
+      raise "Unknown entry found in YAML cache. Try deleting the " \
+            "`library.yml.gz` file"
     end
-
-    archive_exception = validate_archive @zip_path
-    unless archive_exception.nil?
-      @err_msg = "Archive error: #{archive_exception}"
-      Logger.warn "Unable to extract archive #{@zip_path}. " \
-                  "Ignoring it. #{@err_msg}"
-      return
-    end
-
-    file = ArchiveFile.new @zip_path
-    @pages = file.entries.count do |e|
-      SUPPORTED_IMG_TYPES.includes? \
-        MIME.from_filename? e.filename
-    end
-    file.close
   end
 
   def build_json(*, slim = false)
     JSON.build do |json|
       json.object do
-        {% for str in %w(zip_path title size id) %}
+        {% for str in %w(path title size id) %}
-        json.field {{str}}, @{{str.id}}
+        json.field {{str}}, {{str.id}}
       {% end %}
         if err_msg
           json.field "err_msg", err_msg
         end
+        json.field "zip_path", path # for API backward compatability
+        json.field "path", path
         json.field "title_id", @book.id
         json.field "title_title", @book.title
         json.field "sort_title", sort_title
@@ -74,6 +63,9 @@ class Entry
     end
   end
 
+  @[YAML::Field(ignore: true)]
+  @sort_title : String?
+
   def sort_title
     sort_title_cached = @sort_title
     return sort_title_cached if sort_title_cached
@@ -131,58 +123,6 @@ class Entry
     url
   end
 
-  private def sorted_archive_entries
-    ArchiveFile.open @zip_path do |file|
-      entries = file.entries
-        .select { |e|
-          SUPPORTED_IMG_TYPES.includes? \
-            MIME.from_filename? e.filename
-        }
-        .sort! { |a, b|
-          compare_numerically a.filename, b.filename
-        }
-      yield file, entries
-    end
-  end
-
-  def read_page(page_num)
-    raise "Unreadble archive. #{@err_msg}" if @err_msg
-    img = nil
-    begin
-      sorted_archive_entries do |file, entries|
-        page = entries[page_num - 1]
-        data = file.read_entry page
-        if data
-          img = Image.new data, MIME.from_filename(page.filename),
-            page.filename, data.size
-        end
-      end
-    rescue e
-      Logger.warn "Unable to read page #{page_num} of #{@zip_path}. Error: #{e}"
-    end
-    img
-  end
-
-  def page_dimensions
-    sizes = [] of Hash(String, Int32)
-    sorted_archive_entries do |file, entries|
-      entries.each_with_index do |e, i|
-        begin
-          data = file.read_entry(e).not_nil!
-          size = ImageSize.get data
-          sizes << {
-            "width"  => size.width,
-            "height" => size.height,
-          }
-        rescue e
-          Logger.warn "Failed to read page #{i} of entry #{zip_path}. #{e}"
-          sizes << {"width" => 1000_i32, "height" => 1000_i32}
-        end
-      end
-    end
-    sizes
-  end
-
   def next_entry(username)
     entries = @book.sorted_entries username
     idx = entries.index self
@@ -197,20 +137,6 @@ class Entry
     entries[idx - 1]
   end
 
-  def date_added
-    date_added = nil
-    TitleInfo.new @book.dir do |info|
-      info_da = info.date_added[@title]?
-      if info_da.nil?
-        date_added = info.date_added[@title] = ctime @zip_path
-        info.save
-      else
-        date_added = info_da
-      end
-    end
-    date_added.not_nil! # is it ok to set not_nil! here?
-  end
-
   # For backward backward compatibility with v0.1.0, we save entry titles
   #   instead of IDs in info.json
   def save_progress(username, page)
@@ -290,7 +216,7 @@ class Entry
       end
       Storage.default.save_thumbnail @id, img
     rescue e
-      Logger.warn "Failed to generate thumbnail for file #{@zip_path}. #{e}"
+      Logger.warn "Failed to generate thumbnail for file #{path}. #{e}"
     end
 
     img
@@ -299,4 +225,34 @@ class Entry
   def get_thumbnail : Image?
     Storage.default.get_thumbnail @id
   end
+
+  def date_added : Time
+    date_added = Time::UNIX_EPOCH
+    TitleInfo.new @book.dir do |info|
+      info_da = info.date_added[@title]?
+      if info_da.nil?
+        date_added = info.date_added[@title] = ctime path
+        info.save
+      else
+        date_added = info_da
+      end
+    end
+    date_added
+  end
+
+  # Hack to have abstract class methods
+  # https://github.com/crystal-lang/crystal/issues/5956
+  private module ClassMethods
+    abstract def is_valid?(path : String) : Bool
+  end
+
+  macro inherited
+    extend ClassMethods
+  end
+
+  abstract def read_page(page_num)
+
+  abstract def page_dimensions
+
+  abstract def examine : Bool?
 end

src/library/title.cr

@@ -49,13 +49,18 @@ class Title
       path = File.join dir, fn
       if File.directory? path
         title = Title.new path, @id, cache
-        next if title.entries.size == 0 && title.titles.size == 0
+        unless title.entries.size == 0 && title.titles.size == 0
-        Library.default.title_hash[title.id] = title
+          Library.default.title_hash[title.id] = title
-        @title_ids << title.id
+          @title_ids << title.id
+        end
+        if DirEntry.is_valid? path
+          entry = DirEntry.new path, self
+          @entries << entry if entry.pages > 0 || entry.err_msg
+        end
         next
       end
       if is_supported_file path
-        entry = Entry.new path, self
+        entry = ArchiveEntry.new path, self
         @entries << entry if entry.pages > 0 || entry.err_msg
       end
     end
@@ -127,12 +132,12 @@ class Title
 
     previous_entries_size = @entries.size
     @entries.select! do |entry|
-      existence = File.exists? entry.zip_path
+      existence = entry.examine
       Fiber.yield
       context["deleted_entry_ids"] << entry.id unless existence
       existence
     end
-    remained_entry_zip_paths = @entries.map &.zip_path
+    remained_entry_paths = @entries.map &.path
 
     is_titles_added = false
     is_entries_added = false
@@ -140,29 +145,43 @@ class Title
       next if fn.starts_with? "."
       path = File.join dir, fn
       if File.directory? path
+        unless remained_entry_paths.includes? path
+          if DirEntry.is_valid? path
+            entry = DirEntry.new path, self
+            if entry.pages > 0 || entry.err_msg
+              @entries << entry
+              is_entries_added = true
+              context["deleted_entry_ids"].select! do |deleted_entry_id|
+                entry.id != deleted_entry_id
+              end
+            end
+          end
+        end
+
         next if remained_title_dirs.includes? path
         title = Title.new path, @id, context["cached_contents_signature"]
-        next if title.entries.size == 0 && title.titles.size == 0
+        unless title.entries.size == 0 && title.titles.size == 0
-        Library.default.title_hash[title.id] = title
+          Library.default.title_hash[title.id] = title
-        @title_ids << title.id
+          @title_ids << title.id
-        is_titles_added = true
+          is_titles_added = true
 
-        # We think they are removed, but they are here!
+          # We think they are removed, but they are here!
-        # Cancel reserved jobs
+          # Cancel reserved jobs
-        revival_title_ids = [title.id] + title.deep_titles.map &.id
+          revival_title_ids = [title.id] + title.deep_titles.map &.id
-        context["deleted_title_ids"].select! do |deleted_title_id|
+          context["deleted_title_ids"].select! do |deleted_title_id|
-          !(revival_title_ids.includes? deleted_title_id)
+            !(revival_title_ids.includes? deleted_title_id)
-        end
+          end
-        revival_entry_ids = title.deep_entries.map &.id
+          revival_entry_ids = title.deep_entries.map &.id
-        context["deleted_entry_ids"].select! do |deleted_entry_id|
+          context["deleted_entry_ids"].select! do |deleted_entry_id|
-          !(revival_entry_ids.includes? deleted_entry_id)
+            !(revival_entry_ids.includes? deleted_entry_id)
+          end
         end
 
         next
       end
       if is_supported_file path
-        next if remained_entry_zip_paths.includes? path
+        next if remained_entry_paths.includes? path
-        entry = Entry.new path, self
+        entry = ArchiveEntry.new path, self
         if entry.pages > 0 || entry.err_msg
           @entries << entry
           is_entries_added = true
@@ -613,6 +632,16 @@ class Title
 
     if last_read_entry && last_read_entry.finished? username
       last_read_entry = last_read_entry.next_entry username
+      if last_read_entry.nil?
+        # The last entry is finished. Return the first unfinished entry
+        #   (if any)
+        sorted_entries(username).each do |e|
+          unless e.finished? username
+            last_read_entry = e
+            break
+          end
+        end
+      end
     end
 
     last_read_entry
@@ -627,7 +656,7 @@ class Title
 
     @entries.each do |e|
       next if da.has_key? e.title
-      da[e.title] = ctime e.zip_path
+      da[e.title] = ctime e.path
     end
 
     TitleInfo.new @dir do |info|

src/library/types.cr

@@ -1,13 +1,3 @@
-SUPPORTED_IMG_TYPES = %w(
-  image/jpeg
-  image/png
-  image/webp
-  image/apng
-  image/avif
-  image/gif
-  image/svg+xml
-)
-
 enum SortMethod
   Auto
   Title

src/logger.cr

@@ -38,6 +38,7 @@ class Logger
     Log.setup do |c|
       c.bind "*", @@severity, @backend
       c.bind "db.*", :error, @backend
+      c.bind "duktape", :none, @backend
     end
   end
 

src/mango.cr

@@ -7,7 +7,7 @@ require "option_parser"
 require "clim"
 require "tallboy"
 
-MANGO_VERSION = "0.26.1"
+MANGO_VERSION = "0.27.0"
 
 # From http://www.network-science.de/ascii/
 BANNER = %{

src/plugin/plugin.cr

@@ -105,9 +105,10 @@ class Plugin
   getter js_path = ""
   getter storage_path = ""
 
-  def self.build_info_ary
+  def self.build_info_ary(dir : String? = nil)
     @@info_ary.clear
-    dir = Config.current.plugin_path
+    dir ||= Config.current.plugin_path
+
     Dir.mkdir_p dir unless Dir.exists? dir
 
     Dir.each_child dir do |f|
@@ -160,8 +161,8 @@ class Plugin
     list.save
   end
 
-  def initialize(id : String)
+  def initialize(id : String, dir : String? = nil)
-    Plugin.build_info_ary
+    Plugin.build_info_ary dir
 
     @info = @@info_ary.find &.id.== id
     if @info.nil?
@@ -223,6 +224,10 @@ class Plugin
     raise Error.new "Missing required fields in the Page type"
   end
 
+  def can_subscribe? : Bool
+    info.version > 1 && eval_exists?("newChapters")
+  end
+
   def search_manga(query : String)
     if info.version == 1
       raise Error.new "Manga searching is only available for plugins " \
@@ -315,7 +320,7 @@ class Plugin
     json
   end
 
-  private def eval(str)
+  def eval(str)
     @rt.eval str
   rescue e : Duktape::SyntaxError
     raise SyntaxError.new e.message
@@ -327,6 +332,15 @@ class Plugin
     JSON.parse eval(str).as String
   end
 
+  private def eval_exists?(str) : Bool
+    @rt.eval str
+    true
+  rescue e : Duktape::ReferenceError
+    false
+  rescue e : Duktape::Error
+    raise Error.new e.message
+  end
+
   private def def_helper_functions(sbx)
     sbx.push_object
 
@@ -435,9 +449,15 @@ class Plugin
       env = Duktape::Sandbox.new ptr
       html = env.require_string 0
 
-      str = XML.parse(html).inner_text
+      begin
+        parser = Myhtml::Parser.new html
+        str = parser.body!.children.first.inner_text
+
+        env.push_string str
+      rescue
+        env.push_string ""
+      end
 
-      env.push_string str
       env.call_success
     end
     sbx.put_prop_string -2, "text"
@@ -448,8 +468,9 @@ class Plugin
       name = env.require_string 1
 
       begin
-        attr = XML.parse(html).first_element_child.not_nil![name]
+        parser = Myhtml::Parser.new html
-        env.push_string attr
+        attr = parser.body!.children.first.attribute_by name
+        env.push_string attr.not_nil!
       rescue
         env.push_undefined
       end

src/routes/api.cr

@@ -40,7 +40,7 @@ struct APIRouter
     Koa.schema "entry", {
       "pages" => Int32,
       "mtime" => Int64,
-    }.merge(s %w(zip_path title size id title_id display_name cover_url)),
+    }.merge(s %w(zip_path path title size id title_id display_name cover_url)),
       desc: "An entry in a book"
 
     Koa.schema "title", {
@@ -142,8 +142,13 @@ struct APIRouter
           env.response.status_code = 304
           ""
         else
+          if entry.is_a? DirEntry
+            cache_control = "no-cache, max-age=86400"
+          else
+            cache_control = "public, max-age=86400"
+          end
           env.response.headers["ETag"] = e_tag
-          env.response.headers["Cache-Control"] = "public, max-age=86400"
+          env.response.headers["Cache-Control"] = cache_control
           send_img env, img
         end
       rescue e
@@ -866,13 +871,15 @@ struct APIRouter
         "version"      => Int32,
         "settings"     => {} of String => String,
       },
+      "subscribable" => Bool,
     }
     get "/api/admin/plugin/info" do |env|
       begin
         plugin = Plugin.new env.params.query["plugin"].as String
         send_json env, {
-          "success" => true,
+          "success"      => true,
-          "info"    => plugin.info,
+          "info"         => plugin.info,
+          "subscribable" => plugin.can_subscribe?,
         }.to_json
       rescue e
         Logger.error e
@@ -1138,15 +1145,24 @@ struct APIRouter
         entry = title.get_entry eid
         raise "Entry ID `#{eid}` of `#{title.title}` not found" if entry.nil?
 
-        file_hash = Digest::SHA1.hexdigest (entry.zip_path + entry.mtime.to_s)
+        if entry.is_a? DirEntry
+          file_hash = Digest::SHA1.hexdigest(entry.path + entry.mtime.to_s + entry.size)
+        else
+          file_hash = Digest::SHA1.hexdigest(entry.path + entry.mtime.to_s)
+        end
         e_tag = "W/#{file_hash}"
         if e_tag == prev_e_tag
           env.response.status_code = 304
           send_text env, ""
         else
           sizes = entry.page_dimensions
+          if entry.is_a? DirEntry
+            cache_control = "no-cache, max-age=86400"
+          else
+            cache_control = "public, max-age=86400"
+          end
           env.response.headers["ETag"] = e_tag
-          env.response.headers["Cache-Control"] = "public, max-age=86400"
+          env.response.headers["Cache-Control"] = cache_control
           send_json env, {
             "success"    => true,
             "dimensions" => sizes,
@@ -1172,7 +1188,7 @@ struct APIRouter
         title = (Library.default.get_title env.params.url["tid"]).not_nil!
         entry = (title.get_entry env.params.url["eid"]).not_nil!
 
-        send_attachment env, entry.zip_path
+        send_attachment env, entry.path
       rescue e
         Logger.error e
         env.response.status_code = 404

src/routes/reader.cr

@@ -53,6 +53,7 @@ struct ReaderRouter
         render "src/views/reader.html.ecr"
       rescue e
         Logger.error e
+        Logger.debug e.backtrace?
         env.response.status_code = 404
       end
     end

src/server.cr

@@ -23,6 +23,7 @@ class Server
     AdminRouter.new
     ReaderRouter.new
     APIRouter.new
+    OPDSRouter.new
 
     {% for path in %w(/api/* /uploads/* /img/*) %}
       options {{path}} do |env|

src/util/signature.cr

@@ -19,7 +19,7 @@ class File
   #   information as long as the above changes do not happen together with
   #   a file/folder rename, with no library scan in between.
   def self.signature(filename) : UInt64
-    if is_supported_file filename
+    if ArchiveEntry.is_valid?(filename) || is_supported_image_file(filename)
       File.info(filename).inode
     else
       0u64
@@ -67,7 +67,9 @@ class Dir
         else
           # Only add its signature value to `signatures` when it is a
           #   supported file
-          signatures << fn if is_supported_file fn
+          if ArchiveEntry.is_valid?(fn) || is_supported_image_file(fn)
+            signatures << fn
+          end
         end
         Fiber.yield
       end
@@ -76,4 +78,19 @@ class Dir
     cache[dirname] = hash
     hash
   end
+
+  def self.directory_entry_signature(dirname, cache = {} of String => String)
+    return cache[dirname + "?entry"] if cache[dirname + "?entry"]?
+    Fiber.yield
+    signatures = [] of String
+    image_files = DirEntry.sorted_image_files dirname
+    if image_files.size > 0
+      image_files.each do |path|
+        signatures << File.signature(path).to_s
+      end
+    end
+    hash = Digest::SHA1.hexdigest(signatures.join)
+    cache[dirname + "?entry"] = hash
+    hash
+  end
 end

src/util/util.cr

@@ -1,8 +1,19 @@
 IMGS_PER_PAGE            = 5
 ENTRIES_IN_HOME_SECTIONS = 8
 UPLOAD_URL_PREFIX        = "/uploads"
-STATIC_DIRS              = %w(/css /js /img /webfonts /favicon.ico /robots.txt)
+STATIC_DIRS              = %w(/css /js /img /webfonts /favicon.ico /robots.txt
-SUPPORTED_FILE_EXTNAMES  = [".zip", ".cbz", ".rar", ".cbr"]
+  /manifest.json)
+SUPPORTED_FILE_EXTNAMES = [".zip", ".cbz", ".rar", ".cbr"]
+SUPPORTED_IMG_TYPES     = %w(
+  image/jpeg
+  image/png
+  image/webp
+  image/apng
+  image/avif
+  image/gif
+  image/svg+xml
+  image/jxl
+)
 
 def random_str
   UUID.random.to_s.gsub "-", ""
@@ -40,6 +51,7 @@ def register_mime_types
     #   defiend by Crystal in `MIME.DEFAULT_TYPES`
     ".apng" => "image/apng",
     ".avif" => "image/avif",
+    ".jxl"  => "image/jxl",
   }.each do |k, v|
     MIME.register k, v
   end
@@ -49,6 +61,10 @@ def is_supported_file(path)
   SUPPORTED_FILE_EXTNAMES.includes? File.extname(path).downcase
 end
 
+def is_supported_image_file(path)
+  SUPPORTED_IMG_TYPES.includes? MIME.from_filename? path
+end
+
 struct Int
   def or(other : Int)
     if self == 0
@@ -80,9 +96,9 @@ class String
   end
 end
 
-def env_is_true?(key : String) : Bool
+def env_is_true?(key : String, default : Bool = false) : Bool
   val = ENV[key.upcase]? || ENV[key.downcase]?
-  return false unless val
+  return default unless val
   val.downcase.in? "1", "true"
 end
 

src/views/opds/title.xml.ecr

@@ -29,7 +29,7 @@
         <link rel="http://opds-spec.org/image" href="<%= e.cover_url %>" />
         <link rel="http://opds-spec.org/image/thumbnail" href="<%= e.cover_url %>" />
 
-        <link rel="http://opds-spec.org/acquisition" href="<%= base_url %>api/download/<%= e.book.id %>/<%= e.id %>" title="Read" type="<%= MIME.from_filename e.zip_path %>" />
+        <link rel="http://opds-spec.org/acquisition" href="<%= base_url %>api/download/<%= e.book.id %>/<%= e.id %>" title="Read" type="<%= MIME.from_filename e.path %>" />
 
         <link type="text/html" rel="alternate" title="Read in Mango" href="<%= base_url %>reader/<%= e.book.id %>/<%= e.id %>" />
         <link type="text/html" rel="alternate" title="Open in Mango" href="<%= base_url %>book/<%= e.book.id %>" />

src/views/plugin-download.html.ecr

@@ -133,8 +133,10 @@
           </template>
           <button class="uk-button uk-button-primary" @click.prevent="applyFilters()">Apply</button>
           <button class="uk-button uk-button-default" @click.prevent="clearFilters()">Clear</button>
-          <span class="uk-divider-vertical uk-margin-left uk-margin-right"></span>
+          <span x-show="subscribable">
-          <button class="uk-button uk-button-default" @click.prevent="UIkit.modal($refs.modal).show()" :disable="subscribing">Subscribe</button>
+            <span class="uk-divider-vertical uk-margin-left uk-margin-right"></span>
+            <button class="uk-button uk-button-default" @click.prevent="UIkit.modal($refs.modal).show()" :disable="subscribing">Subscribe</button>
+          </span>
         </form>
 
         <p class="uk-text-meta" x-show="chapters && chapters.length > chaptersLimit" x-text="`The manga has ${chapters ? chapters.length : 0} chapters, but Mango can only list up to ${chaptersLimit}. Please use the filters to narrow down your search.`"></p>

src/views/reader-error.html.ecr

@@ -5,7 +5,7 @@
       <div>
         <h3 class="uk-modal-title uk-margin-remove-top">Error</h3>
       </div>
-      <p class="uk-text-meta uk-margin-remove-bottom"><%= entry.zip_path %></p>
+      <p class="uk-text-meta uk-margin-remove-bottom"><%= entry.path %></p>
       <p class="uk-text-meta uk-margin-remove-top"><%= entry.err_msg %></p>
     </div>
     <div class="uk-modal-body">

src/views/reader.html.ecr

@@ -5,7 +5,7 @@
   <%= render_component "head" %>
 
   <body style="position:relative;" x-data="readerComponent()" x-init="init($nextTick)" @resize.window="resized()">
-    <div class="uk-section uk-section-default uk-section-small reader-bg" :style="mode === 'continuous' ? '' : 'padding:0'">
+    <div class="uk-section uk-section-default uk-section-small reader-bg" :style="mode === 'continuous' ? '' : 'padding:0; position: relative;'">
 
       <div @keydown.window.debounce="keyHandler($event)"></div>
 
@@ -19,7 +19,7 @@
       </div>
 
       <div
-        :class="{'uk-container': true, 'uk-container-small': mode === 'continuous', 'uk-container-expand': mode !== 'continuous'}">
+        :class="{'uk-container': true, 'uk-container-small': mode === 'continuous', 'uk-container-expand': mode !== 'continuous'}" style="width: fit-content;">
         <div x-show="!loading && mode === 'continuous'" x-cloak>
           <template x-if="!loading && mode === 'continuous'" x-for="item in items">
             <img
@@ -30,7 +30,7 @@
               :height="item.height"
               :id="item.id"
               :style="`margin-top:${margin}px; margin-bottom:${margin}px`"
-              @click="showControl($event)"
+              @click="clickImage($event)"
               />
           </template>
           <%- if next_entry_url -%>
@@ -40,18 +40,18 @@
           <%- end -%>
         </div>
 
-        <div x-cloak x-show="!loading && mode !== 'continuous'" class="uk-flex uk-flex-middle" style="height:100vh">
+        <div x-cloak x-show="!loading && mode !== 'continuous'" class="uk-flex uk-flex-middle" :style="`height:${fitType === 'vert' ? '100vh' : ''}; min-width: fit-content;`">
 
           <img uk-img :class="{
                                'uk-align-center': true, 
                                'uk-animation-slide-left': flipAnimation === 'left', 
                                'uk-animation-slide-right': flipAnimation === 'right'
-                               }" :data-src="curItem.url" :width="curItem.width" :height="curItem.height" :id="curItem.id" @click="showControl($event)" :style="`
+                               }" :data-src="curItem.url" :width="curItem.width" :height="curItem.height" :id="curItem.id" @click="clickImage($event)" :style="`
-                                                                                                                                                                 width:${mode === 'width' ? '100vw' : 'auto'}; 
+                                                                                                                                                                 width:${fitType === 'horz' ? '100vw' : 'auto'}; 
-                                                                                                                                                                 height:${mode === 'height' ? '100vh' : 'auto'}; 
+                                                                                                                                                                 height:${fitType === 'vert' ? '100vh' : 'auto'}; 
                                                                                                                                                                  margin-bottom:0;
-                                                                                                                                                                 max-width:100%;
+                                                                                                                                                                 max-width:${fitType === 'horz' ? '100%' : fitType === 'vert' ? '' : 'none' };
-                                                                                                                                                                 max-height:100%;
+                                                                                                                                                                 max-height:${fitType === 'vert' ? '100%' : fitType === 'horz' ? '' : 'none'};
                                                                                                                                                                  object-fit: contain;
                                                                                                                                                                  `" />
 
@@ -67,7 +67,7 @@
         <button class="uk-modal-close-default" type="button" uk-close></button>
         <div class="uk-modal-header">
           <h3 class="uk-modal-title break-word"><%= entry.display_name %></h3>
-          <p class="uk-text-meta uk-margin-remove-bottom break-word"><%= entry.zip_path %></p>
+          <p class="uk-text-meta uk-margin-remove-bottom break-word"><%= entry.path %></p>
         </div>
         <div class="uk-modal-body">
           <div class="uk-margin">
@@ -94,6 +94,17 @@
             </div>
           </div>
 
+          <div class="uk-margin" x-show="mode !== 'continuous'">
+            <label class="uk-form-label" for="mode-select">Page fit</label>
+            <div class="uk-form-controls">
+              <select id="fit-select" class="uk-select" @change="fitChanged()">
+                <option value="vert">Fit height</option>
+                <option value="horz">Fit width</option>
+                <option value="real">Real size</option>
+              </select>
+            </div>
+          </div>
+
           <div class="uk-margin" x-show="mode === 'continuous'">
             <label class="uk-form-label" for="margin-range" x-text="`Page Margin: ${margin}px`"></label>
             <div class="uk-form-controls">