trzsz.js

Making webshell and terminal supports trzsz ( trz / tsz ), which similar to ( rz / sz ), and compatible with tmux.

Website: https://trzsz.github.io/js 　中文文档：https://trzsz.github.io/cn/js

Please check https://trzsz.github.io for more information of trzsz.

trzsz.js is the js version of trzsz, supports webshell running in browser, terminal built with electron, etc.

Getting Started

• Install the module

  npm install trzsz

  or

  yarn add trzsz

• Use in Node.js

  import { TrzszFilter } from "trzsz";

  or

  const { TrzszFilter } = require("trzsz");

• Use in browser

  <script src="node_modules/trzsz/lib/trzsz.js"></script>

• Create TrzszFilter object for each connection.

  const trzszFilter = new TrzszFilter({
    // The trzsz options, see below
  });

• Generally, the output of the server is forwarded to the terminal. Pass the output through TrzszFilter.

  const trzszFilter = new TrzszFilter({
    // The output will be forwarded back by TrzszFilter, unless the user runs ( trz / tsz ) on the server.
    writeToTerminal: (data) => terminal.write(typeof data === "string" ? data : new Uint8Array(data)),
  });
  
  // forward the output to TrzszFilter
  webSocket.addEventListener("message", (ev) => trzszFilter.processServerOutput(ev.data));

• Generally, the user input is forwarded to the server. Pass the user input through TrzszFilter.

  const trzszFilter = new TrzszFilter({
    // The user input will be forwarded back by TrzszFilter, unless there are files being transferred.
    sendToServer: (data) => webSocket.send(data),
  });
  
  // forward the user input to TrzszFilter
  terminal.onData((data) => trzszFilter.processTerminalInput(data));
  // forward binary input to TrzszFilter
  terminal.onBinary((data) => trzszFilter.processBinaryInput(data));

• Let TrzszFilter know the terminal columns for rendering progress bar.

  const trzszFilter = new TrzszFilter({
    // initialize the terminal columns
    terminalColumns: terminal.cols,
  });
  
  // reset the terminal columns
  terminal.onResize((size) => trzszFilter.setTerminalColumns(size.cols));

• If the remote server is a Windows shell, such as cmd and PowerShell.

  const trzszFilter = new TrzszFilter({
    // There is a windows shell
    isWindowsShell: true,
  });

• If running in Node.js and TrzszFilter can require('fs'), chooseSendFiles and chooseSaveDirectory are required. If running in web browser, they will be ignored. Note that they are async functions.

  const trzszFilter = new TrzszFilter({
    // call on the user runs trz ( upload files ) on the server and no error on require('fs').
    chooseSendFiles: async (directory) => {
      // if `directory` is `true`, allow to choose multiple directories and files.
      // otherwise, only allow to choose multiple files.
      // return `undefined` if the user cancels.
      // return an array of file paths choosed by the user.
      return ["/path/to/file1", "/path/to/file2", "/path/to/directory3"];
    },
    // call on the user runs tsz ( download files ) on the server and no error on require('fs').
    chooseSaveDirectory: async () => {
      // return `undefined` if the user cancels.
      // return a directory path choosed by the user.
      return "/path/to/directory";
    },
  });

• Support dragging files or directories to upload.

  terminalHtmlElement.addEventListener("dragover", (event) => event.preventDefault());
  terminalHtmlElement.addEventListener("drop", (event) => {
    event.preventDefault();
    trzszFilter
      .uploadFiles(event.dataTransfer.items)
      .then(() => console.log("upload success"))
      .catch((err) => console.log(err));
  });

• TrzszAddon is a wrapper for TrzszFilter. If you are using xterm-addon-attach, just replace AttachAddon with TrzszAddon.

  import { Terminal } from "xterm";
  import { TrzszAddon } from "trzsz";
  
  const terminal = new Terminal();
  const trzszAddon = new TrzszAddon(webSocket);
  terminal.loadAddon(trzszAddon);

Examples

• Browser web shell example.

• Electron terminal app example.

• TrzszAddon xterm addon example.

Screenshot

upload and download files in web browser

upload and download files in electron app

Contact

Feel free to email the author lonnywong@qq.com, or create an issue. Welcome to join the QQ group: 318578930.

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