Repository: lambdaisland/trikl Branch: master Commit: 8d06761f72a0 Files: 16 Total size: 68.8 KB Directory structure: gitextract_1v1wvub8/ ├── .circleci/ │ └── config.yml ├── .dir-locals.el ├── .gitignore ├── CHANGELOG.md ├── LICENSE.txt ├── README.md ├── bin/ │ └── kaocha ├── deps.edn ├── notes.org ├── src/ │ └── trikl/ │ ├── core.clj │ ├── demo/ │ │ └── world.clj │ ├── demo.clj │ ├── telnet.clj │ └── util.clj ├── test/ │ └── unit/ │ └── trikl/ │ └── core_test.clj └── tests.edn ================================================ FILE CONTENTS ================================================ ================================================ FILE: .circleci/config.yml ================================================ version: 2 jobs: build: docker: - image: circleci/clojure:tools-deps steps: - checkout - restore_cache: keys: - v1-dependencies-{{ checksum "deps.edn" }} # fallback to using the latest cache if no exact match is found - v1-dependencies- - run: clojure -A:dev:test -Spath - save_cache: paths: - ~/.m2 key: v1-dependencies-{{ checksum "deps.edn" }} - run: clojure -A:dev:test -m kaocha.runner --reporter kaocha.report/documentation ================================================ FILE: .dir-locals.el ================================================ ((nil . ((cider-clojure-cli-global-options . "-A:dev:test")))) ================================================ FILE: .gitignore ================================================ .cpcache .nrepl-port target repl scratch.clj ================================================ FILE: CHANGELOG.md ================================================ # Unreleased ## Added - `stdio-client` for a direct STDIN/STDOUT connection - Added access to screen and bounding box dimensions during rendering ## Fixed - Fix re-rendering when the terminal size changes, before there would often be artifacts. - Fix endless loop when client socket closes ## Changed ================================================ FILE: LICENSE.txt ================================================ Mozilla Public License Version 2.0 ================================== 1. Definitions -------------- 1.1. "Contributor" means each individual or legal entity that creates, contributes to the creation of, or owns Covered Software. 1.2. "Contributor Version" means the combination of the Contributions of others (if any) used by a Contributor and that particular Contributor's Contribution. 1.3. "Contribution" means Covered Software of a particular Contributor. 1.4. "Covered Software" means Source Code Form to which the initial Contributor has attached the notice in Exhibit A, the Executable Form of such Source Code Form, and Modifications of such Source Code Form, in each case including portions thereof. 1.5. "Incompatible With Secondary Licenses" means (a) that the initial Contributor has attached the notice described in Exhibit B to the Covered Software; or (b) that the Covered Software was made available under the terms of version 1.1 or earlier of the License, but not also under the terms of a Secondary License. 1.6. "Executable Form" means any form of the work other than Source Code Form. 1.7. "Larger Work" means a work that combines Covered Software with other material, in a separate file or files, that is not Covered Software. 1.8. "License" means this document. 1.9. "Licensable" means having the right to grant, to the maximum extent possible, whether at the time of the initial grant or subsequently, any and all of the rights conveyed by this License. 1.10. "Modifications" means any of the following: (a) any file in Source Code Form that results from an addition to, deletion from, or modification of the contents of Covered Software; or (b) any new file in Source Code Form that contains any Covered Software. 1.11. "Patent Claims" of a Contributor means any patent claim(s), including without limitation, method, process, and apparatus claims, in any patent Licensable by such Contributor that would be infringed, but for the grant of the License, by the making, using, selling, offering for sale, having made, import, or transfer of either its Contributions or its Contributor Version. 1.12. "Secondary License" means either the GNU General Public License, Version 2.0, the GNU Lesser General Public License, Version 2.1, the GNU Affero General Public License, Version 3.0, or any later versions of those licenses. 1.13. "Source Code Form" means the form of the work preferred for making modifications. 1.14. "You" (or "Your") means an individual or a legal entity exercising rights under this License. For legal entities, "You" includes any entity that controls, is controlled by, or is under common control with You. For purposes of this definition, "control" means (a) the power, direct or indirect, to cause the direction or management of such entity, whether by contract or otherwise, or (b) ownership of more than fifty percent (50%) of the outstanding shares or beneficial ownership of such entity. 2. License Grants and Conditions -------------------------------- 2.1. Grants Each Contributor hereby grants You a world-wide, royalty-free, non-exclusive license: (a) under intellectual property rights (other than patent or trademark) Licensable by such Contributor to use, reproduce, make available, modify, display, perform, distribute, and otherwise exploit its Contributions, either on an unmodified basis, with Modifications, or as part of a Larger Work; and (b) under Patent Claims of such Contributor to make, use, sell, offer for sale, have made, import, and otherwise transfer either its Contributions or its Contributor Version. 2.2. Effective Date The licenses granted in Section 2.1 with respect to any Contribution become effective for each Contribution on the date the Contributor first distributes such Contribution. 2.3. Limitations on Grant Scope The licenses granted in this Section 2 are the only rights granted under this License. No additional rights or licenses will be implied from the distribution or licensing of Covered Software under this License. Notwithstanding Section 2.1(b) above, no patent license is granted by a Contributor: (a) for any code that a Contributor has removed from Covered Software; or (b) for infringements caused by: (i) Your and any other third party's modifications of Covered Software, or (ii) the combination of its Contributions with other software (except as part of its Contributor Version); or (c) under Patent Claims infringed by Covered Software in the absence of its Contributions. This License does not grant any rights in the trademarks, service marks, or logos of any Contributor (except as may be necessary to comply with the notice requirements in Section 3.4). 2.4. Subsequent Licenses No Contributor makes additional grants as a result of Your choice to distribute the Covered Software under a subsequent version of this License (see Section 10.2) or under the terms of a Secondary License (if permitted under the terms of Section 3.3). 2.5. Representation Each Contributor represents that the Contributor believes its Contributions are its original creation(s) or it has sufficient rights to grant the rights to its Contributions conveyed by this License. 2.6. Fair Use This License is not intended to limit any rights You have under applicable copyright doctrines of fair use, fair dealing, or other equivalents. 2.7. Conditions Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted in Section 2.1. 3. Responsibilities ------------------- 3.1. Distribution of Source Form All distribution of Covered Software in Source Code Form, including any Modifications that You create or to which You contribute, must be under the terms of this License. You must inform recipients that the Source Code Form of the Covered Software is governed by the terms of this License, and how they can obtain a copy of this License. You may not attempt to alter or restrict the recipients' rights in the Source Code Form. 3.2. Distribution of Executable Form If You distribute Covered Software in Executable Form then: (a) such Covered Software must also be made available in Source Code Form, as described in Section 3.1, and You must inform recipients of the Executable Form how they can obtain a copy of such Source Code Form by reasonable means in a timely manner, at a charge no more than the cost of distribution to the recipient; and (b) You may distribute such Executable Form under the terms of this License, or sublicense it under different terms, provided that the license for the Executable Form does not attempt to limit or alter the recipients' rights in the Source Code Form under this License. 3.3. Distribution of a Larger Work You may create and distribute a Larger Work under terms of Your choice, provided that You also comply with the requirements of this License for the Covered Software. If the Larger Work is a combination of Covered Software with a work governed by one or more Secondary Licenses, and the Covered Software is not Incompatible With Secondary Licenses, this License permits You to additionally distribute such Covered Software under the terms of such Secondary License(s), so that the recipient of the Larger Work may, at their option, further distribute the Covered Software under the terms of either this License or such Secondary License(s). 3.4. Notices You may not remove or alter the substance of any license notices (including copyright notices, patent notices, disclaimers of warranty, or limitations of liability) contained within the Source Code Form of the Covered Software, except that You may alter any license notices to the extent required to remedy known factual inaccuracies. 3.5. Application of Additional Terms You may choose to offer, and to charge a fee for, warranty, support, indemnity or liability obligations to one or more recipients of Covered Software. However, You may do so only on Your own behalf, and not on behalf of any Contributor. You must make it absolutely clear that any such warranty, support, indemnity, or liability obligation is offered by You alone, and You hereby agree to indemnify every Contributor for any liability incurred by such Contributor as a result of warranty, support, indemnity or liability terms You offer. You may include additional disclaimers of warranty and limitations of liability specific to any jurisdiction. 4. Inability to Comply Due to Statute or Regulation --------------------------------------------------- If it is impossible for You to comply with any of the terms of this License with respect to some or all of the Covered Software due to statute, judicial order, or regulation then You must: (a) comply with the terms of this License to the maximum extent possible; and (b) describe the limitations and the code they affect. Such description must be placed in a text file included with all distributions of the Covered Software under this License. Except to the extent prohibited by statute or regulation, such description must be sufficiently detailed for a recipient of ordinary skill to be able to understand it. 5. Termination -------------- 5.1. The rights granted under this License will terminate automatically if You fail to comply with any of its terms. However, if You become compliant, then the rights granted under this License from a particular Contributor are reinstated (a) provisionally, unless and until such Contributor explicitly and finally terminates Your grants, and (b) on an ongoing basis, if such Contributor fails to notify You of the non-compliance by some reasonable means prior to 60 days after You have come back into compliance. Moreover, Your grants from a particular Contributor are reinstated on an ongoing basis if such Contributor notifies You of the non-compliance by some reasonable means, this is the first time You have received notice of non-compliance with this License from such Contributor, and You become compliant prior to 30 days after Your receipt of the notice. 5.2. If You initiate litigation against any entity by asserting a patent infringement claim (excluding declaratory judgment actions, counter-claims, and cross-claims) alleging that a Contributor Version directly or indirectly infringes any patent, then the rights granted to You by any and all Contributors for the Covered Software under Section 2.1 of this License shall terminate. 5.3. In the event of termination under Sections 5.1 or 5.2 above, all end user license agreements (excluding distributors and resellers) which have been validly granted by You or Your distributors under this License prior to termination shall survive termination. ************************************************************************ * * * 6. Disclaimer of Warranty * * ------------------------- * * * * Covered Software is provided under this License on an "as is" * * basis, without warranty of any kind, either expressed, implied, or * * statutory, including, without limitation, warranties that the * * Covered Software is free of defects, merchantable, fit for a * * particular purpose or non-infringing. The entire risk as to the * * quality and performance of the Covered Software is with You. * * Should any Covered Software prove defective in any respect, You * * (not any Contributor) assume the cost of any necessary servicing, * * repair, or correction. This disclaimer of warranty constitutes an * * essential part of this License. No use of any Covered Software is * * authorized under this License except under this disclaimer. * * * ************************************************************************ ************************************************************************ * * * 7. Limitation of Liability * * -------------------------- * * * * Under no circumstances and under no legal theory, whether tort * * (including negligence), contract, or otherwise, shall any * * Contributor, or anyone who distributes Covered Software as * * permitted above, be liable to You for any direct, indirect, * * special, incidental, or consequential damages of any character * * including, without limitation, damages for lost profits, loss of * * goodwill, work stoppage, computer failure or malfunction, or any * * and all other commercial damages or losses, even if such party * * shall have been informed of the possibility of such damages. This * * limitation of liability shall not apply to liability for death or * * personal injury resulting from such party's negligence to the * * extent applicable law prohibits such limitation. Some * * jurisdictions do not allow the exclusion or limitation of * * incidental or consequential damages, so this exclusion and * * limitation may not apply to You. * * * ************************************************************************ 8. Litigation ------------- Any litigation relating to this License may be brought only in the courts of a jurisdiction where the defendant maintains its principal place of business and such litigation shall be governed by laws of that jurisdiction, without reference to its conflict-of-law provisions. Nothing in this Section shall prevent a party's ability to bring cross-claims or counter-claims. 9. Miscellaneous ---------------- This License represents the complete agreement concerning the subject matter hereof. If any provision of this License is held to be unenforceable, such provision shall be reformed only to the extent necessary to make it enforceable. Any law or regulation which provides that the language of a contract shall be construed against the drafter shall not be used to construe this License against a Contributor. 10. Versions of the License --------------------------- 10.1. New Versions Mozilla Foundation is the license steward. Except as provided in Section 10.3, no one other than the license steward has the right to modify or publish new versions of this License. Each version will be given a distinguishing version number. 10.2. Effect of New Versions You may distribute the Covered Software under the terms of the version of the License under which You originally received the Covered Software, or under the terms of any subsequent version published by the license steward. 10.3. Modified Versions If you create software not governed by this License, and you want to create a new license for such software, you may create and use a modified version of this License if you rename the license and remove any references to the name of the license steward (except to note that such modified license differs from this License). 10.4. Distributing Source Code Form that is Incompatible With Secondary Licenses If You choose to distribute Source Code Form that is Incompatible With Secondary Licenses under the terms of this version of the License, the notice described in Exhibit B of this License must be attached. Exhibit A - Source Code Form License Notice ------------------------------------------- This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0. If a copy of the MPL was not distributed with this file, You can obtain one at http://mozilla.org/MPL/2.0/. If it is not possible or desirable to put the notice in a particular file, then You may include the notice in a location (such as a LICENSE file in a relevant directory) where a recipient would be likely to look for such a notice. You may add additional accurate notices of copyright ownership. Exhibit B - "Incompatible With Secondary Licenses" Notice --------------------------------------------------------- This Source Code Form is "Incompatible With Secondary Licenses", as defined by the Mozilla Public License, v. 2.0. ================================================ FILE: README.md ================================================ # Trikl "Terminal React for Clojure" => Trikl [![CircleCI](https://circleci.com/gh/lambdaisland/trikl.svg?style=svg)](https://circleci.com/gh/lambdaisland/trikl) [![cljdoc badge](https://cljdoc.org/badge/lambdaisland/trikl)](https://cljdoc.org/d/lambdaisland/trikl) [![Clojars Project](https://img.shields.io/clojars/v/lambdaisland/trikl.svg)](https://clojars.org/lambdaisland/trikl) Trikl is a long-term slow moving research project. It is not intended for general consumption. There are useful bits in there, but expect to get intimately familiar with the implementation if you want to get value out of them. The README below is from the first incarnation of Trikl, which had severe shortcomings around event handling and how it handles components. The groundwork for a new version has started in the `lambdaisland.trikl1.*` namespaces. [Regal](https://lambdaisland.github.io/land-of-regal/) is a spin-off library created to support this work. ---- Trikl lets you write terminal applications in a way that's similar to React/Reagent. It's main intended use case is for hobbyist/indy games. With Trikl you use (a dialect of) Hiccup to create your Terminal UI. As your application state changes, Trikl re-renders the UI, diffs the output with what's currently on the screen, and sends the necessary commands to the terminal to bring it up to date. This is still very much work in progress and subject to change. ## Example You can use Trikl directly by hooking it up to STDIN/STDOUT, or you can use it as a telnet server. The telnet server is great because it makes it easy to try stuff out from the REPL. For instance you can do something like this: ``` clojure (require '[trikl.core :as t]) ;; store clients so we can poke at them from the REPL (def clients (atom [])) ;; Start the server on port 1357, as an accept handler just store the client in ;; the atom. (def stop-server (t/start-server #(swap! clients conj %) 1357)) ;; in a terminal: telnet localhost 1357 #_(stop-server) ;; disconnect all clients and stop listening for connections ;; Render hiccup! Re-run this as often as you like, only changes are sent to the client. (t/render (last @clients) #_(t/stdio-client) [:box {:x 10 :y 5 :width 20 :height 10 :styles {:bg [50 50 200]}} [:box {:x 1 :y 1 :width 18 :height 8 :styles {:bg [200 50 0]}} [:box {:x 3 :y 1} [:span {:styles {:fg [30 30 150]}} "hello\n"] [:span {:styles {:fg [100 250 100]}} " world"]]]]) ;; Listen for input events (t/add-listener (last @clients) ::my-listener (fn [event] (prn event))) ``` Use `stdio-client` to hook up the terminal the process is running in. Result: ![](example.png) ## Things you can render You can render the following things ### String A string is simply written to to the screen as-is. Note that strings are limited to their current bounding box, so long strings don't wrap. You can use newlines to use multiple lines. ``` clojure (t/render client "hello, world!\nWhat a lovely day we're having") ``` ### Sequence A seq (so the result of calling `list`, `map`, `for`, etc. Not vectors!) will simply render each item in the list. ``` clojure (t/render client (repeat 20 "la")) ``` ### Elements Elements are vectors, they contain the element type (first item in the vector), a map of attributes (optional, second element in the vector), and any remaining child elements. Trikl currently knows of the following elements. #### :span A `:span` can be used to add styling, i.e. foreground and background colors. Colors are specified using RGB (red-green-blue) values. Each value can go from 0 to 255. ``` clojure (t/render client [:span {:styles {:fg [100 200 0] :bg [50 50 200]}} "Oh my!"]) ``` #### :box The `:box` element changes the current bounding box. You give it a position with `:x` and `:y`, and a size with `:width` and `:height`, and anything inside the box will be contained within those coordinates. If you don't supply `:x` or `:y` it will default to the top-left corner of its surrounding bounding box. If you omit `:width` and `:height` it will take up as much space as it has available. You can also supply `:styles` to the box, as with `:span`. Setting a `:bg` on the box will color the whole box. Note for instance that this example truncates the string to "Hello,", because it doesn't fit in the box. ``` clojure (t/render client [:box {:x 20 :y 10, :width 7, :height 3} "Hello, world!"]) ``` #### :line-box A `:line-box` is like a box, but it gets a fancy border. This border is drawn on the inside of the box, so you lose two rows and two columns of space to put stuff inside, but it looks pretty nice! By default it uses lines with rounded corners, but you can use any border decoration you like by supplying a `:lines` attribute. This can be a string or sequence containing the characters to use, starting from the top left corner and moving clockwise. The default value for `:lines` is ` "╭─╮│╯─╰│"` ``` clojure (t/render client [:line-box {:x 20 :y 10, :width 10, :height 3} "Hello, world!"]) ``` #### :cols and :rows The `:cols` and `:rows` elements will split their children into columns and rows respectively. If any of the children have a `:width` or `:height` that will be respected. Any remaining space is distributed equally among the ones that don't have a fixed `:width`/`:height` already. So you could divide the screen in four equally sized sections using: ``` clojure (t/render (last @clients) [:cols [:rows [:line-box "1"] [:line-box "2"]] [:rows [:line-box "3"] [:line-box "4"]]]) ``` #### Custom Components You can define custom components by creating a two-argument function, attributes and children, and using the function as the first element in the vector. You can return any of the above renderable things from the function. ``` clojure (defn app [attrs children] [:rows [:line-box "Hiiiiii"] [:line-box {:height 15 :styles {:bg [100 50 50]}}]]) (t/render client [app]) ``` ## App state If you keep your app state in an atom, then you can use `render-watch!` to automatically re-render when the atom changes. ``` clojure (def app-state (atom {:pos [10 10]})) (t/render-watch! client (fn [{[x y] :pos} _] [:box {:x x :y y} "X"]) app-state) (swap! app-state update-in [:pos 0] inc) (swap! app-state update-in [:pos 1] inc) (t/unwatch! app-state) ``` ## Querying the screen size and bounding box During rendering you can use `t/*screen-size*` and `t/*bounding-box*` to find the current dimensions you are working in. There's also a `(box-size)` helpers which only returns the `[width height]` of the bounding box, rather than `[x y width height]`. This should greatly alleviate the need to write your own drawing functions, as you can now do everything with custom elements and a combination of `[:span ...]` and `[:box ...]`. The main reason to write custom drawing functions would be for performance, when what you are drawing does not easily fit in the span/box paradigm. If you find yourself creating a span per character then maybe a custom drawing function makes sense. ## Custom drawing functions To implement custom elements, extend the `t/draw` multimethod. The method takes two arguments, the element (the vector), and a "virtual screen". Your method needs to return an updated version of the virtual screen. The main reasons to do this are because this gives you access to the current screen size (bounding box), and for performance reasons. The `VirtualScreen` has a ":charels" key (character elements, analogues to pixels), This is a vector of rows, each row is a vector of "charels", which have a `:char`, `:bg`, `:fg` key. Make sure the `:char` is set to an actual `char`, not to a String. After drawing the virtual screen is diffed with the previous virtual screen to figure out the minimum commands to send to the terminal to update it. ``` clojure (defmethod t/draw :x-marks-the-spot [element screen] (assoc-in screen [:charels 5 5 :char] \X)) ``` Things to watch out for: - Normalize your element with `t/split-el`, this always returns a three element vector with element type, attribute map, children sequence. - Stick to your bounding box! You probably want to start with this ``` clojure (let [[_ attrs children] (split-el element) [x y width height] (apply-bounding-box attrs screen)] ,,,) ``` You should not touch anything outside `[(range x (+ x width)) (range y (+ y height))]` - If your element takes `:styles`, then use `push-styles` and `pop-styles` to correctly restore the styles from a surrounding context. ## True Color In theory ANSI compatible terminals are able to render 24 bit colors (16 million shades), but in practice they don't always do. You can try this snippet, if you see nice continuous gradients from blue to purple then you're all set. ``` clojure (defn app [_] [:box (for [y (range 50)] [:span (for [x (range 80)] [:span {:styles {:bg [(* x 2) (* y 2) (+ x (* 4 y))]}} " "]) "\n"])]) ``` iTerm and gnome-terminal should both be fine, but if you're using Tmux and you're not getting the desired results, then add this to your `~/.tmux.conf` ``` conf set -g default-terminal "xterm-256color" set-option -ga terminal-overrides ",xterm-256color:Tc" ``` ## Using netcat Not all systems come with telnet installed, notably recent versions of Mac OS X have stopped bundling it. The common advice you'll find is to use Netcat (`nc`) instead, but these two are not the same. Telnet understands certain binary codes to configure your terminal, which Trikl needs to function correctly. You can `brew install telnet`, or in a pinch you can use `stty` to configure your terminal to not echo input, and to enable "raw" (direct, unbuffered) mode. Make sure to invoke `stty` and `nc` as a single command like this: ``` stty -echo -icanon && nc localhost 1357 ``` To undo the changes to your terminal do ``` stty +echo +icanon ``` ## Graal compatibility Trikl contains enough type hints to prevent Clojure's type reflection, which makes it compatible with GraalVM. This means you can compile your project to native binaries that boot instantly. Great for tooling! ## License Copyright © 2018 Arne Brasseur Licensed under the term of the Mozilla Public License 2.0, see LICENSE. ================================================ FILE: bin/kaocha ================================================ #!/bin/bash clojure -A:test -m kaocha.runner "$@" ================================================ FILE: deps.edn ================================================ {:paths ["src" "test" "resources"] :deps {org.clojure/clojure {:mvn/version "1.10.0-RC4"}} :aliases {:dev {} :test {:extra-deps {lambdaisland/kaocha {:mvn/version "0.0-305"} lambdaisland/ansi {:mvn/version "RELEASE"}}}}} ================================================ FILE: notes.org ================================================ * app ideas ** roguelike / rpg ** "graphics editor" / level editor ** interactive version upgrades ** interactive test runner ** admin UI for app ================================================ FILE: src/trikl/core.clj ================================================ (ns trikl.core (:require [clojure.java.io :as io] [clojure.string :as str] [clojure.java.shell :as shell] [trikl.telnet :as telnet]) (:import clojure.lang.PersistentVector java.util.Iterator java.lang.ProcessBuilder$Redirect sun.misc.Signal sun.misc.SignalHandler [java.io InputStream OutputStream IOException] [java.net ServerSocket Socket] [java.nio.charset CharsetDecoder Charset CodingErrorAction] [java.nio ByteBuffer CharBuffer] java.io.StringWriter)) (set! *warn-on-reflection* true) (set! *unchecked-math* true #_:warn-on-boxed) (Thread/setDefaultUncaughtExceptionHandler (reify Thread$UncaughtExceptionHandler (uncaughtException [_ thread ex] (println ex "Uncaught exception on" (.getName thread))))) (def ESC \u001b) (def CSI_PATTERN #"\x1b\[[\x30-x3F]*[\x20-\x2F]*[\x40-\x7E]") (defrecord Charel [char fg bg]) (defrecord VirtualScreen [pos size bounding-box styles stack ^PersistentVector charels]) (def BLANK (map->Charel {:char \space})) ;; Can be accessed by client rendering code (def ^:dynamic *screen-size* nil) (def ^:dynamic *bounding-box* nil) (defn box-size [] (when-let [[x y w h] *bounding-box*] [w h])) (defn csi-fg [color] (if (nil? color) (str ESC "[39m") (let [[r g b] color] (str ESC "[38;2;" r ";" g ";" b "m")))) (defn csi-bg [color] (if (nil? color) (str ESC "[49m") (let [[r g b] color] (str ESC "[48;2;" r ";" g ";" b "m")))) (defn csi-move [[^long col ^long row]] (str ESC "[" (inc row) ";" (inc col) "H")) (defn assoc-col [screen col] (assoc-in screen [:pos 0] col)) (defn update-col [screen f & args] (apply update-in screen [:pos 0] f args)) (defn assoc-row [screen row] (assoc-in screen [:pos 1] row)) (defn update-row [screen f & args] (apply update-in screen [:pos 1] f args)) (defn col ^long [screen] (get-in screen [:pos 0])) (defn row ^long [screen] (get-in screen [:pos 1])) (defn push-styles [screen styles] (-> screen (update :stack conj (:styles screen)) (update :styles merge styles))) (defn pop-styles [screen] (-> screen (assoc :styles (last (:stack screen))) (update :stack pop))) ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; (defn split-el [el] (when (vector? el) (let [[tag & rst] el] (let [fst (first rst)] (if (map? fst) [tag fst (rest rst)] [tag {} (or rst ())]))))) (defmulti draw (fn [element screen] (if (vector? element) (if (keyword? (first element)) (first element) (type (first element))) (type element)))) (defn draw-line [line screen] (let [[x y] (:pos screen) [^long min-x ^long min-y ^long max-x ^long max-y] (:bounding-box screen) line (remove #{\return} ;; don't want no carriage returns (subs line 0 (max 0 (min (count line) (- max-x x)))))] (reduce (fn [screen char] (-> screen (update-in [:charels (row screen) (col screen)] #(-> % (assoc :char char) (merge (:styles screen)))) (update-col inc))) screen line))) (defmethod draw nil [_ screen] screen) (defmethod draw java.util.List [els screen] (reduce #(draw %2 %1) screen els)) (defmethod draw clojure.lang.Fn [el screen] (let [[f attrs children] (split-el el)] (draw (f attrs children) screen))) (defmethod draw clojure.lang.Var [el screen] (let [[f attrs children] (split-el el)] (draw (f attrs children) screen))) (defn apply-bounding-box [attrs screen] (let [[^long vx ^long vy ^long vw ^long vh] (:bounding-box screen) {:keys [^long x ^long y ^long width ^long height styles] :or {x 0 y 0 width vw height vh}} attrs x (max 0 (min (+ x vx) (+ vx vw))) y (max 0 (min (+ y vy) (+ vy vh))) width (min width (- vw x)) height (min height (- vh y))] [x y width height])) (defmethod draw :box [el screen] (let [[_ attrs children] (split-el el) [x y width height :as bbox] (apply-bounding-box attrs screen) styles (:styles attrs) coords (for [col (range x (+ x width)) row (range y (+ y height))] [row col]) screen' (-> screen (push-styles styles) (assoc :pos [x y] :bounding-box [x y (+ x width) (+ y height)]) (update :charels (fn [charels] (reduce #(update-in %1 %2 merge styles) charels coords))))] (binding [*bounding-box* bbox] (-> (reduce #(draw %2 %1) screen' children) (assoc :pos (:pos screen) :bounding-box (:bounding-box screen)) (pop-styles))))) (defmethod draw :span [el screen] (let [[_ attrs children] (split-el el) {:keys [styles]} attrs screen' (push-styles screen styles)] (-> (reduce #(draw %2 %1) screen' children) (pop-styles)))) (defmethod draw String [s screen] (let [[x y] (:pos screen) [^long min-x ^long min-y ^long max-x ^long max-y] (:bounding-box screen)] (let [lines (str/split s #"(?<=\n)")] (reduce (fn [screen line] (if (>= (row screen) max-y) (reduced screen) (let [nl? (= \newline (last line)) line (cond->> line nl? butlast nl? (apply str))] (cond-> (draw-line line screen) nl? (assoc-col min-x) nl? (update-row inc))))) screen lines)))) (defmethod draw Character [char screen] (let [[x y] (:pos screen) [^long min-x ^long min-y ^long max-x ^long max-y] (:bounding-box screen)] (if (and (<= min-x x max-x) (<= min-y y max-y)) (-> screen (update-in [:charels (row screen) (col screen)] #(-> % (assoc :char char) (merge (:styles screen)))) (update-col inc)) screen))) (defmethod draw :line-box [el screen] (let [[_ attrs children] (split-el el) [x y width height :as bbox] (apply-bounding-box attrs screen) [tl t tr r br b bl l] (:lines attrs "╭─╮│╯─╰│")] (binding [*bounding-box* [(inc x) (inc y) (dec width) (dec height)]] (draw [:box attrs tl (repeat (- width 2) t) tr "\n" (repeat (- height 2) (str l (apply str (repeat (- width 2) \space)) r "\n")) bl (repeat (- width 2) b) br "\n" [:box (assoc attrs :x 1 :y 1 :width (- width 2) :height (- height 2)) children]] screen)))) (defmethod draw :cols [el screen] (let [[_ attrs children] (split-el el) [x y width height :as bbox] (apply-bounding-box attrs screen) ratios (:ratios attrs (repeat (count children) 1)) widths (map #(:width (second (split-el %))) children) remaining (- width (apply + (remove nil? widths))) total (apply + (keep (fn [[w r]] (when (nil? w) r)) (map vector widths ratios)))] (assert (= (count children) (count ratios) (count widths))) (binding [*bounding-box* bbox] (let [children (reduce (fn [res [c w r]] (let [x (apply + (map #(get-in % [1 :width]) res)) ww (or w (Math/round (double (/ (* remaining r) total)))) ww (if (= (count res) (dec (count children))) (- width x) ww)] (conj res (if w (-> c (assoc-in [1 :x] x) (assoc-in [1 :width] ww)) [:box {:x x :width ww} c])))) [] (map vector children widths ratios))] (->> children (reduce (fn [s ch] (draw ch s)) screen)))))) (defmethod draw :rows [el screen] (let [[_ attrs children] (split-el el) [^long x ^long y ^long width ^long height :as bbox] (apply-bounding-box attrs screen) ratios (:ratios attrs (repeat (count children) 1)) heights (map #(:height (second (split-el %))) children) ^long remaining (- height (apply + (remove nil? heights))) ^long total (apply + (keep (fn [[w r]] (when (nil? w) r)) (map vector heights ratios)))] (assert (= (count children) (count ratios) (count heights))) (binding [*bounding-box* bbox] (let [children (reduce (fn [res [c w r]] (let [y (apply + (map #(get-in % [1 :height]) res)) ww (or w (Math/round (double (/ (* remaining r) total)))) ww (if (= (count res) (dec (count children))) (- height y) ww)] (conj res (if w (-> c (assoc-in [1 :y] y) (assoc-in [1 :height] ww)) [:box {:y y :height ww} c])))) [] (map vector children heights ratios))] (->> children (reduce (fn [s ch] (draw ch s)) screen)))))) (defn ^VirtualScreen virtual-screen [rows cols] (map->VirtualScreen {:pos [0 0] :size [cols rows] :bounding-box [0 0 cols rows] :styles {:fg nil :bg nil} :stack [] :charels (vec (repeat rows (vec (repeat cols BLANK))))})) (def NULL_ITERATOR (reify java.util.Iterator (hasNext [_] false) (next [_] nil))) (defn diff-row [^StringBuilder sb row-idx styles ^PersistentVector old ^PersistentVector new] (let [^Iterator old-it (if old (.iterator old) NULL_ITERATOR) ^Iterator new-it (if new (.iterator new) NULL_ITERATOR)] (loop [styles styles col-idx 0 streak? false old-ch (and (.hasNext old-it) (.next old-it)) new-ch (and (.hasNext new-it) (.next new-it))] (let [old-next? (.hasNext old-it) new-next? (.hasNext new-it)] (if (= old-ch new-ch) (if new-next? (recur styles (inc col-idx) false (when old-next? (.next old-it)) (when new-next? (.next new-it))) styles) (let [{:keys [char fg bg] :or {char \space}} new-ch fg? (not= fg (:fg styles)) bg? (not= bg (:bg styles))] (when-not streak? (.append sb (csi-move [col-idx row-idx]))) (when fg? (.append sb (csi-fg fg))) (when bg? (.append sb (csi-bg bg))) (.append sb char) (let [new-styles (if (or fg? bg?) new-ch styles)] (if new-next? (recur new-styles (inc col-idx) true (when old-next? (.next old-it)) (when new-next? (.next new-it))) new-styles)))))))) (defn diff-screen [sb ^VirtualScreen old ^VirtualScreen new] (let [^PersistentVector old-charels (:charels old) ^PersistentVector new-charels (:charels new) ^Iterator old-row-it (.iterator old-charels) ^Iterator new-row-it (.iterator new-charels)] (loop [styles (:styles old) row-idx 0 old-row (and (.hasNext old-row-it) (.next old-row-it)) new-row (and (.hasNext new-row-it) (.next new-row-it))] (let [old-next? (.hasNext old-row-it) new-next? (.hasNext new-row-it)] (let [styles (diff-row sb row-idx styles old-row new-row)] (if new-next? (recur styles (inc row-idx) (when old-next? (.next old-row-it)) (when new-next? (.next new-row-it))) (assoc new :styles styles))))))) (defn parse-screen-size [csi] (when csi (when-let [[_ row col] (re-find #"(\d+);(\d+)R" csi)] [(Integer/parseInt row) (Integer/parseInt col)]))) (defn ^CharsetDecoder charset-decoder ([] (charset-decoder "UTF-8")) ([encoding] (-> (Charset/forName encoding) .newDecoder (.onMalformedInput CodingErrorAction/IGNORE) (.onUnmappableCharacter CodingErrorAction/IGNORE)))) (defn char-in-range? [min ch max] (<= (long min) (long ch) (long max))) (defn input-consumer-loop [^InputStream in handler] (let [buf-size 8192 buffer (byte-array buf-size) buffer' (byte-array buf-size) decoder (charset-decoder)] (try (loop [state {}] #_(prn state) (let [{:keys [^CharBuffer char-buf]} state] (if (or (nil? char-buf) (not (.hasRemaining char-buf))) ;; Fill byte buffer, pull out telnet codes, decode to char buffer (let [end (.read in buffer 0 buf-size) {:keys [dest-end commands]} (telnet/filter-commands {:src buffer :dest buffer' :end end}) ^CharacterBuffer char-buf (.decode decoder (ByteBuffer/wrap buffer' 0 dest-end))] (run! #(handler {:type :telnet :command %}) commands) (recur {:char-buf char-buf})) ;; handle next character (let [ch (char (.get char-buf)) ansi-state (:ansi-state state)] (cond ;; The ESC [ is followed by any number (including none) of "parameter bytes" in ;; the range 0x30–0x3F (ASCII 0–9:;<=>?), then by any number of "intermediate ;; bytes" in the range 0x20–0x2F (ASCII space and !"#$%&'()*+,-./), then finally ;; by a single "final byte" in the range 0x40–0x7E (ASCII @A–Z[\]^_`a–z{|}~). (= ch (char ESC)) (if (.hasRemaining char-buf) (recur (assoc state :ansi-state :init :ansi-command [])) (do (handler {:type :input :char ch}) (recur state))) (and (= :init ansi-state) (= \[ ch)) (recur (-> state (assoc :ansi-state :param-bytes) (update :ansi-command conj ch))) (and (= :init ansi-state) (= \O ch)) (recur (-> (assoc state :ansi-state :fn-key) (update :ansi-command conj ch))) (and (= :param-bytes ansi-state) (char-in-range? \0 ch \?)) (recur (update state :ansi-command conj ch)) (and (#{:param-bytes :interm-bytes} ansi-state) (char-in-range? \space ch \/)) (recur (-> (assoc state :ansi-state :interm-bytes) (update :ansi-command conj ch))) (and (#{:param-bytes :interm-bytes :fn-key} ansi-state) (char-in-range? \@ ch \~)) (do (handler {:type :ansi :command (String. (chars (into-array Character/TYPE (conj (:ansi-command state) ch))))}) (recur (dissoc state :ansi-state :ansi-command))) :else (do (handler {:type :input :char ch}) (recur (dissoc state :ansi-state :ansi-command)))))))) (catch IOException e (println "Input loop closed") :done) (catch Exception e (println "Error during input loop" e))))) (def ansi-key-commands {"" :esc "[A" :up "[B" :down "[C" :right "[D" :left "[H" :home "[E" :end "[2~" :insert "[3~" :delete "OP" :f1 "OQ" :f2 "OR" :f3 "OS" :f4 "[15~" :f5 "[17~" :f6 "[18~" :f7 "[19~" :f8 "[20~" :f9 "[21~" :f10 "[23~" :f11 "[24~" :f12}) (defn char->key [ch] (cond (= 27 (long ch)) :escape (= 32 (long ch)) :space (char-in-range? 0 ch 31) (keyword (str "ctrl-" (char (+ (long ch) 64)))) (char-in-range? 33 ch 126) (keyword (str ch)) (= ch \u007F) :backspace :else nil)) (defn listener-handler [{:keys [listeners]}] (fn [{:keys [type command char] :as msg}] #_(prn msg) (let [emit (fn [message] #_(prn message) (let [m (assoc message :time (System/currentTimeMillis))] (run! (fn [l] (l m)) (vals @listeners))))] (case type :telnet (when (= (take 3 command) [:IAC :SUBNEGOTIATION :NAWS]) (let [raw-msg (:telnet/raw (meta command)) [_ _ _ _ cols _ rows] raw-msg] (when (and (int? cols) (int? rows)) (emit {:type :screen-size :screen-size [rows cols]})))) :ansi (if-let [screen-size (parse-screen-size command)] (emit {:type :screen-size :screen-size screen-size}) (if-let [key (get ansi-key-commands command)] (emit {:type :input :key key}))) :input (emit (assoc msg :key (char->key (:char msg)))))))) (defn start-input-loop [{:keys [^InputStream in] :as client}] (assoc client :input-loop (future (loop [result (input-consumer-loop in (listener-handler client))] (when-not (= :done result) (recur (input-consumer-loop in (listener-handler client)))))))) (defn request-screen-size [^OutputStream out] (let [csi (fn [& args] (let [^String code (apply str ESC "[" args)] (.write out (.getBytes code)))) buffer (byte-array 1024)] (csi "s") ;; save cursor position (csi "5000;5000H") (csi "6n") (csi "u"))) (def CSI-ALTERNATE-SCREEN (str ESC "[?1049h")) (def CSI-REGULAR-SCREEN (str ESC "[?1049l")) (def CSI-CLEAR-SCREEN (str ESC "[2J")) (def CSI-UPPER-LEFT (str ESC "[H")) (def CSI-RESET-STYLES (str ESC "[m")) (def CSI-SHOW-CURSOR (str ESC "[?25h")) (def CSI-HIDE-CURSOR (str ESC "[?25l")) (defn start-client [{:keys [^OutputStream out] :as client}] (when (:socket client) (telnet/prep-telnet out)) (.write out (.getBytes (str CSI-ALTERNATE-SCREEN CSI-CLEAR-SCREEN CSI-UPPER-LEFT CSI-RESET-STYLES CSI-HIDE-CURSOR))) (request-screen-size out)) (defn stop-client [{:keys [^OutputStream out ^Socket socket] :as client}] (try (.write out (.getBytes (str CSI-REGULAR-SCREEN CSI-RESET-STYLES CSI-SHOW-CURSOR))) (when socket (.close socket)) (catch IOException _))) (defn add-shutdown-hook [^clojure.lang.IFn f] (.addShutdownHook (java.lang.Runtime/getRuntime) (Thread. f))) (defn make-client [in out & [socket]] (let [size (atom nil) client {:socket socket :in in :out out :size size :screen (atom nil) :listeners (atom {:resize (fn [e] (when-let [s (:screen-size e)] (reset! size (with-meta s {:trikl/message e}))))})}] (start-client client) (let [client (start-input-loop client)] (add-shutdown-hook #(stop-client client)) client))) (defn ^"[Ljava.lang.String;" string-array [args] (into-array String args)) (defn exec-stty [& args] (let [^Process process (-> (ProcessBuilder. (string-array (cons "stty" args))) (.redirectInput (ProcessBuilder$Redirect/from (io/file "/dev/tty"))) (.start)) ^StringWriter err (StringWriter.)] {:exit (.waitFor process) :err @(future (with-open [^StringWriter err (StringWriter.)] (io/copy (.getErrorStream process) err) (.toString err))) :out @(future (with-open [^StringWriter out (StringWriter.)] (io/copy (.getInputStream process) out) (.toString out)))})) (defn stdio-client [] (exec-stty "-echo" "-icanon") (let [client (make-client System/in System/out)] (add-shutdown-hook (fn [] (stop-client client) (exec-stty "+echo" "+icanon"))) (Signal/handle (Signal. "WINCH") (reify SignalHandler (^void handle [this ^Signal s] (let [out (:out (exec-stty "size"))] (when-let [[_ rows cols] (re-find #"(\d+) (\d+)" out)] (run! #(% (with-meta {:type :screen-size :screen-size [(Long/parseLong rows) (Long/parseLong cols)]} {:trikl/source :SIGWINCH})) (vals @(:listeners client)))))))) client)) (defn add-listener [client key listener] (swap! (:listeners client) assoc key listener)) (defn remove-listener [client key] (swap! (:listeners client) dissoc key)) (defmacro time-info [expr desc] `(let [start# (System/nanoTime) ret# ~expr] (println (str ~desc ": " (/ (double (- (. System (nanoTime)) start#)) 1000000.0) " ms")) ret#)) (defn start-server ([client-handler] (start-server client-handler 1357)) ([client-handler port] (let [^ServerSocket server (telnet/server-socket port) clients (atom []) stop! (fn [] (run! stop-client @clients) (try (.close server) (catch IOException _)))] (future (try (loop [^Socket client-sock (telnet/accept-connection server)] (let [client (make-client (.getInputStream client-sock) (.getOutputStream client-sock) client-sock)] (swap! clients conj client) (client-handler client) (recur (telnet/accept-connection server)))) (catch IOException _ ;; socket closed ) (catch Throwable t (println "Exception in server loop" t)))) stop!))) (defn render [{:keys [^VirtualScreen screen ^OutputStream out size] :as client} element] (let [size @size] (assert (= 2 (count size))) (binding [*screen-size* size *bounding-box* (into [0 0] size)] (let [sb (StringBuilder. ^String CSI-RESET-STYLES) prev-screen @screen styles (:styles prev-screen) empty-screen (apply virtual-screen size) prev-screen (if (= (:size prev-screen) size) (or prev-screen empty-screen) (do (.append sb CSI-CLEAR-SCREEN) empty-screen)) next-screen (draw element empty-screen) new-screen (diff-screen sb prev-screen next-screen) commands (str sb)] (.write out (.getBytes commands)) (reset! screen new-screen)))) nil) (defn force-render [client element] (reset! (:screen client) (apply virtual-screen @(:size client))) (render client element)) (defn render-watch! [client element state] (render client [element @state]) (add-watch state ::render (fn [_ _ _ new-state] (render client [element new-state])))) (defn unwatch! [state] (remove-watch state ::render)) ================================================ FILE: src/trikl/demo/world.clj ================================================ (ns trikl.demo.world) (defn tile [kind glyph color] {:tile/kind kind :entity/glyph glyph :entity/color color}) (def tiles {:floor (tile :floor "." :white) :wall (tile :wall "#" :white) :bound (tile :bound "X" :black)}) (defn get-tile [tiles x y] (get-in tiles [y x] (:bound tiles))) (defn random-tile [] (if (< (rand) 0.45) (:wall tiles) (:floor tiles))) (defn random-tiles [cols rows] (vec (for [row (range rows)] (vec (for [col (range cols)] (assoc (random-tile) :entity/col col :entity/row row)))))) (defn neighbors [tiles x y] (let [sx (max 0 (dec x)) sy (max 0 (dec y))] (for [px (range sx (+ sx 3)) py (range sy (+ sy 3))] (get-in tiles [py px])))) (defn tile-count [ts kind] (count (filter (comp #{kind} :tile/kind) ts))) (defn smooth [ts] (vec (for [row (range (count ts))] (vec (for [col (range (count (get ts row)))] (let [tile (get-in ts [row col]) neighbors (neighbors ts col row) wall-count (tile-count neighbors :wall)] (if (> wall-count 4) (merge tile (:wall tiles)) (merge tile (:floor tiles))))))))) (comment (defn inspect [tiles] (mapv (comp (partial apply str) (partial map :entity/glyph)) tiles)) (def ts (random-tiles 160 50)) [".##...##.#" ".#..###..." "#.##..#.#." "#..###...#" "....#...#." "#..#.#.##." "...##....#" "#.#.#.##.." ".#.##....#" "###..#.###"] (-> (random-tiles 10 10) smooth smooth smooth inspect) (tile-count (neighbors ts 2 1) :floor)) ================================================ FILE: src/trikl/demo.clj ================================================ (ns trikl.demo (:require [trikl.core :as t] [trikl.demo.world :as world] [trikl.util :refer [reduce-for]])) (def clients (atom [])) (def stop-server (t/start-server #(swap! clients conj %) 1357)) (def stop-server (t/start-server #(t/render % [:cols [:line-box { :styles {:bg [50 50 200]}}] [:line-box { :styles {:bg [200 50 0]}} [:box {:x 3 :y 1} [:span {:styles {:fg [30 30 150]}} "hello\n"] [:span {:styles {:fg [100 250 100]}} \x " world"]]]]) 1357)) (t/render (last @clients) [:cols [:line-box { :styles {:bg [50 50 200]}}] [:line-box { :styles {:bg [200 50 0]}} [:box {:x 3 :y 1} [:span {:styles {:fg [30 30 150]}} "hello\n"] [:span {:styles {:fg [100 250 100]}} \x " world"]]]]) #_(stop-server) (reset! (:size (last @clients)) [9 19]) (t/stop-client (last @clients)) (Math/cos Math/PI) ;; => 1.0 (Math/sin (* 2 Math/PI)) (def stop? (atom false)) (reset! stop? true) (future (loop [step 0] (let [steps 30 circle (* 2 Math/PI) radius 8 x (Math/round (+ 44 (* 2 radius (Math/cos (/ (* circle step) steps))))) y (Math/round (+ 8 (* radius (Math/sin (/ (* circle step) steps)))))] (t/render (last @clients) [:line-box {:x x :y y :width 12 :height 5 :styles {:bg [50 50 200]}} [:span {:x 5 :y 3} "Hix!!!!"]]) (Thread/sleep 80) (when-not @stop? (recur (if (< step (dec steps)) (inc step) 0)))))) (last @clients) (t/render (last @clients) [:cols [:line-box { :styles {:bg [50 50 200]}}] [:line-box { :styles {:bg [200 50 0]}} [:box {:x 3 :y 1} [:span {:styles {:fg [30 30 150]}} "hello\n"] [:span {:styles {:fg [100 250 100]}} \x " world"]]]]) (t/render (last @clients) [:box [:line-box {:x 10 :y 6 :width 20 :height 12 :styles {:bg [50 50 200]}}] [:line-box {:x 5 :y 2 :width 18 :height 8 :styles {:bg [200 50 0]}} [:box {:x 3 :y 1} [:span {:styles {:fg [30 30 150]}} "hello\n"] [:span {:styles {:fg [100 250 100]}} \x " world"]]]]) (t/render (last @clients) [:rows {:ratios [3 1]} [:cols [:line-box {:styles {:bg [0 0 200]}}] [:line-box {:styles {:bg [50 50 200]}}]] [:line-box {:styles {:bg [200 50 100] :fg [255 80 130]}} [:box {:x 3 :y 1} [:span {:styles {:fg [30 30 150]}} "hello\n"] [:span {:styles {:fg [100 250 100]}} \x " world"]]]]) (t/add-listener (last @clients) ::my-listener (fn [event] (prn event))) (t/render (last @clients) [:box (for [x (range 79) y (range 53) :let [page 2]] [:box {:x x :y y} (str (char (+ 255 (* page 79 53) x (* 53 y))))] ) ] ) (defmethod t/draw :line-box [el screen] (let [[_ attrs children] (t/split-el el) [x y width height] (t/apply-bounding-box attrs screen) [tl t tr r br b bl l] (:lines attrs "╭─╮│╯─╰│")] (t/draw [:box attrs tl (repeat (- width 2) t) tr "\n" (repeat (- height 2) (str l (apply str (repeat (- width 2) \space)) r "\n") ) bl (repeat (- width 2) b) br "\n" [:box (assoc attrs :x 1 :y 1 :width (- width 2) :height (- height 2)) children]] screen))) " ━│┃┄┅┆┇┈┉┊┋┌┍┎┏┐┑┒┓└┕┖┗┘┙┚┛├┝┞ ┅┆┇┈┉┊┋┌┍┎┏┐┑┒┓└┕┖┗┘┙┚┛├┝┞┟┠┡┢┣┤┥┦┧┨┩┪┫┬┭┮┯┰┱┲┳┴┵┶┷┸┹┺┻┼┽┾┿╀╁╂╃╄╅╆╇╈╉╊╋╌╍╎╏═║╒╓ ┺┻┼┽┾┿╀╁╂╃╄╅╆╇╈╉╊╋╌╍╎╏═║╒╓╔╕╖╗╘╙╚╛╜╝╞╟╠╡╢╣╤╥╦╧╨╩╪╫╬╭╮╯╰╱╲╳╴╵╶╷╸╹╺╻╼╽╾╿▀▁▂▃▄▅▆▇█ ╯╰╱╲╳╴╵╶╷╸╹╺╻╼╽╾╿▀▁▂▃▄▅▆▇█▉▊▋▌▍▎▏▐░▒▓▔▕▖▗▘▙▚▛▜▝▞▟" (apply str (map #(char %) (range 1100 1400))) (range 30 110) (char 100) (defn app [{:keys [offset]} _] [:box (for [y (range 50)] [:span (for [x (range 80)] [:span {:styles {:bg [(+ offset (* x 2)) (+ offset (* y 2)) (+ offset x (* 4 y))]}} ({0 "-" 5 "\\" 10 "|" 15 "/" 20 "." 25 "*"} offset)]) "\n"])]) (def state (atom {:size [300 300] :pos [150 150] :world (->> (world/random-tiles 300 300) (iterate world/smooth) (drop 3) first) })) (defmethod t/draw :world-map [el {:keys [charels] :as screen}] (let [[el attrs] (t/split-el el) [^long x ^long y ^long width ^long height] (t/apply-bounding-box attrs screen) {:keys [world pos]} attrs [x-center y-center] pos x-offset (Math/round (double (- x-center (/ width 2)))) y-offset (Math/round (double (- y-center (/ height 2))))] (assoc screen :charels (reduce-for charels [col (range width) row (range height)] (assoc-in % [(+ y row) (+ x col) :char] (first (get-in world [(+ y row y-offset) (+ x col x-offset) :entity/glyph]))))))) (first (get-in (world/random-tiles 3 3) [1 1 :entity/glyph])) (t/render (last @clients) (repeat 20 "la")) (t/render (last @clients)[:span {:styles {:fg [100 200 0] :bg [50 50 200]}} "Oh my!"]) (t/render (last @clients)[:box {:x 20 :y 10, :width 7, :height 3} "Hello, world!"]) (t/render (last @clients) (repeat 200 "*")) (t/render (last @clients) [:line-box {}]) (t/time-info (t/render (last @clients) [:world-map (assoc @state :pos [152 148])]) "render") (t/render-watch! (last @clients) (fn [attrs _] [:world-map attrs]) state) (t/render (last @clients) [:cols [:rows [:line-box "1"] [:line-box "2"]] [:rows [:line-box "3"] [:line-box "4"]]]) (t/split-el [:line-box ]) (do (swap! state update-in [:pos 0] dec) nil ) (unwatch! state) (swap! state update :offset + 5) (defn app [attrs children] [:rows [:line-box "Hiiiiii"] [:line-box {:height 15 :styles {:bg [100 50 50]}}]]) (t/render (last @clients) [app]) (def app-state (atom {:pos [10 10]})) (t/render-watch! (last @clients) (fn [{[x y] :pos} _] [:box {:x x :y y} "X"]) app-state) (swap! app-state update-in [:pos 0] inc) (swap! app-state update-in [:pos 1] inc) (t/unwatch! app-state) ================================================ FILE: src/trikl/telnet.clj ================================================ (ns trikl.telnet (:import java.net.ServerSocket javax.net.ServerSocketFactory)) (set! *warn-on-reflection* true) (set! *unchecked-math* true #_:warn-on-boxed) (defn ^ServerSocket server-socket [^long port] (.createServerSocket (ServerSocketFactory/getDefault) port)) (defn accept-connection [^ServerSocket server-socket] (doto (.accept server-socket) (.setTcpNoDelay true))) (def TELNET {:SUBNEGOTIATION_END 0xf0 :SUBNEGOTIATION 0xfa :WILL 0xfb :WONT 0xfc :DO 0xfd :DONT 0xfe :IAC 0xff :TRANSMIT_BINARY 0x00 :ECHO 0x01 :RECONNECTION 0x02 :SUPPRESS_GO_AHEAD 0x03 :NAWS 0x1f :LINEMODE 0x22}) (defn send-telnet-command [^java.net.SocketOutputStream out & args] (->> args (map #(TELNET % %)) (map unchecked-byte) ^bytes (into-array Byte/TYPE) (.write out))) (defn prep-telnet [out] (send-telnet-command out :IAC :DO :LINEMODE :IAC :SUBNEGOTIATION :LINEMODE (byte 1) (byte 0) :IAC :SUBNEGOTIATION_END :IAC :WILL :ECHO :IAC :DO :NAWS)) (defn filter-commands "Copy buffer `src` to `dest`, filtering out any Telnet protocol commands along the way. These are returned separately." [{:keys [^bytes src ^bytes dest ^long end]}] #_(prn (take end (seq src))) (let [IAC (unchecked-byte (TELNET :IAC)) subneg-start (unchecked-byte (TELNET :SUBNEGOTIATION)) subneg-end (unchecked-byte (TELNET :SUBNEGOTIATION_END)) subcmd-min (unchecked-byte (TELNET :WILL)) subcmd-max (unchecked-byte (TELNET :DONT)) cmd->kw (into {} (map (juxt (comp unchecked-byte val) key)) TELNET) byte->long #(if (< % 0) (+ 255 (long %)) (long %))] (loop [state {:src-pos 0 :dest-pos 0 :commands []}] (let [{:keys [src-pos dest-pos cmd commands]} state] (if (= src-pos end) {:src-pos (- src-pos (count cmd)) ;; if a command is in flight then ;; don't consume the last bytes of ;; the buffer :dest-end dest-pos :commands commands} (let [b (aget src src-pos) {:keys [cmd cmd? subneg?]} state] (cond (and subneg? (not= subneg-end b)) (recur (-> state (update :src-pos inc) (update :cmd conj b))) (= IAC b) (recur (-> state (update :src-pos inc) (assoc :cmd? true :cmd [b]))) (and cmd? (= subneg-start b)) (recur (-> state (update :src-pos inc) (update :cmd conj b) (assoc :cmd? false :subneg? true))) (and cmd? (<= subcmd-min b subcmd-max)) (recur (-> state (update :src-pos inc) (update :cmd conj b))) (or cmd? (and subneg? (= subneg-end b))) (let [command (conj cmd b)] (recur (-> state (assoc :src-pos (inc src-pos)) (dissoc :cmd :cmd? :subneg?) (update :commands conj (with-meta (mapv #(cmd->kw % (byte->long %)) command) {:telnet/raw (mapv byte->long command)}))))) :else (do (aset dest dest-pos b) (recur (-> state (update :src-pos inc) (update :dest-pos inc))))))))))) #_ (let [src-buf (byte-array 10) dest-buf (byte-array 10)] (aset src-buf 0 (byte 60)) (aset src-buf 1 (byte 61)) (aset src-buf 2 (byte 62)) (aset src-buf 3 (unchecked-byte (TELNET :IAC))) (aset src-buf 4 (unchecked-byte (TELNET :WILL))) (aset src-buf 5 (unchecked-byte (TELNET :LINEMODE))) (aset src-buf 6 (byte 70)) (-> (buffer-filter-commands {:src src-buf :dest dest-buf :end 7}) :commands first meta) #_(seq dest-buf) ) ================================================ FILE: src/trikl/util.clj ================================================ (ns trikl.util) (defn reduce-for* [binding-pairs init body] (if (next binding-pairs) (let [[[v val]] binding-pairs res (gensym "res")] `(reduce (fn [~res ~v] ~(reduce-for* (next binding-pairs) res body)) ~init ~val)) (let [[[v val]] binding-pairs] `(reduce (fn [~'% ~v] ~@body) ~init ~val)))) (defmacro reduce-for {:style/indent 2} [init bindings & body] (let [binding-pairs (partition 2 bindings)] (reduce-for* binding-pairs init body))) (comment (reduce-for [] [x (range 3) y (range 3)] (conj % [x y]))) ================================================ FILE: test/unit/trikl/core_test.clj ================================================ (ns trikl.core-test (:require [trikl.core :as t] [clojure.test :refer :all] [lambdaisland.ansi :as ansi])) (is (= [[{:row 1, :col 1} "x"] {}] (let [sb (StringBuilder.) styles (t/diff-row sb 0 {} [t/BLANK] [(t/map->Charel {:char \x})])] [(ansi/token-stream (str sb)) styles]))) (is (= (let [sb (StringBuilder.) styles (t/diff-row sb 0 {} [(t/map->Charel {:char \x})] [(t/map->Charel {:char \x})])] [(ansi/token-stream (str sb)) styles]) )) (+ 1 1) (let [sb (StringBuilder.) styles (t/diff-row sb 0 {} [t/BLANK] [(t/map->Charel {:char \y :fg [10 20 30]})])] [(ansi/token-stream (str sb)) styles]) [[{:row 1, :col 1} {:foreground [:rgb 10 20 30]} "y"] {:char \y, :fg [10 20 30], :bg nil}] (let [sb (StringBuilder.) styles (t/diff-row sb 0 {} [t/BLANK t/BLANK] [(t/map->Charel {:char \x :fg [10 20 30]}) (t/map->Charel {:char \y :fg [10 20 30]})])] [(ansi/token-stream (str sb)) styles]) [[{:row 1, :col 1} {:foreground [:rgb 10 20 30]} "xy"] {:char \x, :fg [10 20 30], :bg nil}] (let [sb (StringBuilder.) styles (t/diff-row sb 0 {} [] [(t/map->Charel {:char \x :fg [10 20 30]}) (t/map->Charel {:char \y :fg [10 20 30]})])] [(ansi/token-stream (str sb)) styles]) [[{:row 1, :col 1} {:foreground [:rgb 10 20 30]} "xy"] {:char \x, :fg [10 20 30], :bg nil}] (let [sb (StringBuilder.) styles (t/diff-row sb 0 {} [(t/map->Charel {:char \x :fg [10 20 30]}) (t/map->Charel {:char \y :fg [10 20 30]})] [])] [(ansi/token-stream (str sb)) styles]) [[{:row 1, :col 1} " "] {}] (t/time-info (let [sb (StringBuilder.) styles (t/diff-row sb 0 {} [t/BLANK t/BLANK t/BLANK] [(t/map->Charel {:char \x :fg [10 20 30]}) t/BLANK (t/map->Charel {:char \y :fg [10 20 30]})])] [(ansi/token-stream (str sb)) styles]) "") [[{:row 1, :col 1} {:foreground [:rgb 10 20 30]} "x" {:row 1, :col 3} "y"] {:char \x, :fg [10 20 30], :bg nil}] ================================================ FILE: tests.edn ================================================ #kaocha/v1 {}