docs-nodejs/tty.html

<!DOCTYPE html><html lang="en"><head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>TTY | Node.js v12.10.0 Documentation</title>
  <link rel="stylesheet" href="data:text/css;base64,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">
  <link rel="stylesheet" href="data:text/css;base64,/*--------------------- Layout and Typography ----------------------------*/
html {
  font-size: 1rem;
  overflow-wrap: break-word;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  -webkit-font-variant-ligatures: none;
          font-variant-ligatures: none;
}

* {
  box-sizing: border-box;
}

body {
  font-family: "Lato", "Lucida Grande", "Lucida Sans Unicode", "Lucida Sans", Verdana, Tahoma, sans-serif;
  margin: 0;
  padding: 0;
  color: #333;
  background: #fff;
}

h1 { font-size: 2.5rem }
h2 { font-size: 2rem }
h3 { font-size: 1.75rem }
h4 { font-size: 1.5rem }
h5 { font-size: 1.25rem }
h6 { font-size: 1rem }

h1, h2, h3, h4, h5, h6 {
  margin: 1.5rem 0 1rem;
  text-rendering: optimizeLegibility;
  font-weight: 700;
  position: relative;
}

pre, tt, code, .pre, span.type, a.type {
  font-family: SFMono-Regular, Menlo, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: .9em;
}

#content {
  position: relative;
}

a, a:link, a:active {
  color: #43853d;
  text-decoration: none;
  border-radius: 2px;
  padding: 1px 3px;
}

a:hover, a:focus {
  color: #fff;
  background-color: #43853d;
  outline: none;
}

strong {
  font-weight: 700;
}

code a:hover {
  background: none;
}

em code {
  font-style: normal;
}

#changelog #gtoc {
  display: none;
}

#gtoc {
  margin-top: .5rem;
  margin-bottom: 1rem;
}

#gtoc ul {
  list-style: none;
  margin-left: 0;
  line-height: 1.5rem;
}

#gtoc > ul > li {
  display: inline;
  border-right: 1px #000 solid;
  margin-right: 0.4rem;
  padding-right: 0.4rem;
}

#gtoc > ul > li:last-child {
  border-right: none;
  margin-right: 0;
  padding-right: 0;
}

li.version-picker {
  position: relative;
}

li.version-picker:hover > a {
  border-radius: 2px 2px 0 0;
}

li.version-picker:hover > ol {
  display: block;
  z-index: 1;
}

li.version-picker a span {
  font-size: .7rem;
}

ol.version-picker {
  background: #fff;
  border: 1px #43853d solid;
  border-radius: 0 0 2px 2px;
  display: none;
  list-style: none;
  position: absolute;
  right: 0;
  top: 1.25rem;
  width: 100%;
}

#gtoc ol.version-picker li {
  display: block;
  border-right: 0;
  margin-right: 0;
}

ol.version-picker li a {
  border-radius: 0;
  display: block;
  margin: 0;
  padding: .1rem;
  padding-left: 1rem;
}

ol.version-picker li:last-child a {
  border-bottom-right-radius: 1px;
  border-bottom-left-radius: 1px;
}

.line {
  width: calc(100% - 1rem);
  display: block;
  padding-bottom: 1px;
}

.api_stability {
  color: white !important;
  margin: 0 0 1rem 0;
  font-family: "Lato", "Lucida Grande", "Lucida Sans Unicode", "Lucida Sans", Verdana, Tahoma, sans-serif;
  padding: 1rem;
  line-height: 1.5;
}

.api_stability * {
  color: white !important;
}

.api_stability a {
  text-decoration: underline;
}

.api_stability a:hover, .api_stability a:active, .api_stability a:focus {
  background: rgba(255, 255, 255, .4);
}

.api_stability a code {
  background: none;
}

.api_stability_0 {
  background-color: #D60027;
}

.api_stability_1 {
  background-color: #EC5315;
}

.api_stability_2 {
  background-color: #4EBA0F;
}

.api_metadata {
  font-size: .85rem;
  margin-bottom: 1rem;
}

.api_metadata span {
  margin-right: 1rem;
}

.api_metadata span:last-child {
  margin-right: 0px;
}

ul.plain {
  list-style: none;
}

abbr {
  border-bottom: 1px dotted #454545;
}

p {
  text-rendering: optimizeLegibility;
  margin: 0 0 1.125rem 0;
  line-height: 1.5;
}

#apicontent > *:last-child {
  margin-bottom: 0;
  padding-bottom: 2rem;
}

table {
  border-collapse: collapse;
  margin: 0 0 1.5rem 0;
}

th, td {
  border: 1px solid #aaa;
  padding: .75rem 1rem .75rem 1rem;
  vertical-align: top;
}

th {
  text-align:left;
}

ol, ul, dl {
  margin: 0 0 .6rem 0;
  padding: 0;
}

ol ul, ol ol, ol dl, ul ul, ul ol, ul dl, dl ul, dl ol, dl dl {
  margin-bottom: 0;
}

ul, ol {
  margin-left: 2rem;
}

dl dt {
  position: relative;
  margin: 1.5rem 0 0;
}

dl dd {
  position: relative;
  margin: 0 1rem 0;
}

dd + dt.pre {
  margin-top: 1.6rem;
}

#apicontent {
  padding-top: 1rem;
}

#apicontent .line {
  width: calc(50% - 1rem);
  margin: 1rem 1rem .95rem;
  background-color: #ccc;
}

h2 + h2 {
  margin: 0 0 .5rem;
}

h3 + h3 {
  margin: 0 0 .5rem;
}

h2, h3, h4, h5 {
  position: relative;
  padding-right: 40px;
}

.srclink {
  float: right;
  font-size: smaller;
}

h1 span, h2 span, h3 span, h4 span {
  position: absolute;
  display: block;
  top: 0;
  right: 0;
}

h1 span:hover, h2 span:hover, h3 span:hover, h4 span:hover {
  opacity: 1;
}

h1 span a, h2 span a, h3 span a, h4 span a {
  color: #000;
  text-decoration: none;
  font-weight: bold;
}

pre, tt, code {
  line-height: 1.5rem;
  margin: 0; padding: 0;
}

.pre {
  line-height: 1.5rem;
}

pre {
  padding: 1rem;
  vertical-align: top;
  background: #f2f2f2;
  margin: 1rem;
  overflow-x: auto;
}

pre > code {
  padding: 0;
}

pre + h3 {
  margin-top: 2.225rem;
}

code.pre {
  white-space: pre;
}

#intro {
  margin-top: 1.25rem;
  margin-left: 1rem;
}

#intro a {
  color: #ddd;
  font-weight: bold;
}

hr {
  background: none;
  border: medium none;
  border-bottom: 1px solid #7a7a7a;
  margin: 0 0 1rem 0;
}

#toc h2 {
  margin-top: 0;
  margin: 1.5rem 0;
}

#toc p {
  margin: 0;
}

#toc ul a {
  text-decoration:none;
}

#toc ul li {
  margin-bottom: .666rem;
  list-style: square outside;
}

#toc li > ul {
  margin-top: .666rem;
}

#toc .stability_0::after {
  background-color: #d50027;
  color: #fff;
  content: "deprecated";
  margin-left: .25rem;
  padding: 1px 3px;
  border-radius: 3px;
}

#apicontent li {
  margin-bottom: .5rem;
}

#apicontent li:last-child {
  margin-bottom: 0;
}

tt, code {
  color: #040404;
  background-color: #f2f2f2;
  border-radius: 2px;
  padding: 1px 3px;
}

.api_stability code {
  background: rgba(0, 0, 0, .1);
}

a code {
  color: inherit;
  background: inherit;
  padding: 0;
}

.type {
  line-height: 1.5rem;
}

#column1.interior {
  margin-left: 234px;
  padding: 0 2rem;
  -webkit-padding-start: 1.5rem;
}

#column2.interior {
  width: 234px;
  background: #333;
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  overflow-x: hidden;
  overflow-y: scroll;
}

#column2 ul {
  list-style: none;
  margin: .9rem 0 .5rem;
  background: #333;
}

#column2 > :first-child {
  margin: 1.25rem;
  font-size: 1.5rem;
}

#column2 > ul:nth-child(2) {
  margin: 1.25rem 0 .5rem;
}

#column2 > ul:last-child {
  margin: .9rem 0 1.25rem;
}

#column2 ul li {
  padding-left: 1.25rem;
  margin-bottom: .5rem;
  padding-bottom: .5rem;
}

#column2 .line {
  margin: 0 .5rem;
  background-color: #707070;
}

#column2 ul li:last-child {
  margin-bottom: 0;
}

#column2 ul li a {
  color: #ccc;
  border-radius: 0;
}

#column2 ul li a.active, #column2 ul li a.active:hover,
#column2 ul li a.active:focus {
  color: #43853d;
  border-radius: 0;
  border-bottom: 1px solid #43853d;
  background: none;
}

#intro a:hover, #intro a:focus,
#column2 ul li a:hover, #column2 ul li a:focus {
  color: #fff;
  background: none;
}

span > .mark, span > .mark:visited {
  color: #707070;
  position: absolute;
  top: 0px;
  right: 0px;
}

span > .mark:hover, span > .mark:focus, span > .mark:active {
  color: #43853d;
  background: none;
}

th > *:last-child, td > *:last-child {
  margin-bottom: 0;
}

.changelog > summary {
  margin: .5rem 0;
  padding: .5rem 0;
  cursor: pointer;
}

/* simpler clearfix */
.clearfix:after {
  content: ".";
  display: block;
  height: 0;
  clear: both;
  visibility: hidden;
}

.github_icon {
  vertical-align: middle;
  margin: -2px 3px 0 0;
}

@media only screen and (max-width: 1024px) {
  #content {
    overflow: visible;
  }
  #column1.interior {
    margin-left: 0;
    padding-left: .5rem;
    padding-right: .5rem;
    width: auto;
    overflow-y: visible;
  }
  #column2 {
    display: none;
  }
}

@media print {
  html {
    height: auto;
    font-size: 0.75em;
  }
  #column2.interior {
    display: none;
  }
  #column1.interior {
    margin-left: 0px;
    padding: 0px;
    overflow-y: auto;
  }
  .api_metadata,
  #toc,
  .srclink,
  #gtoc,
  .mark {
    display: none;
  }
  h1 {
    font-size: 2rem;
  }
  h2 {
    font-size: 1.75rem;
  }
  h3 {
    font-size: 1.5rem;
  }
  h4 {
    font-size: 1.3rem;
  }
  h5 {
    font-size: 1.2rem;
  }
  h6 {
    font-size: 1.1rem;
  }
  .api_stability {
    display: inline-block;
  }
  .api_stability a {
    text-decoration: none;
  }
  a {
    color: inherit;
  }
  #apicontent {
    overflow: hidden;
  }
}
">
  <link rel="stylesheet" href="data:text/css;base64,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">
  <link rel="canonical" href="https://nodejs.org/api/tty.html">
</head>
<body class="alt apidoc" id="api-section-tty">
  <div id="content" class="clearfix">
    <div id="column2" class="interior">
      <div id="intro" class="interior">
        <a href="https://nodejs.org/" title="Go back to the home page">
          Node.js
        </a>
      </div>
      <ul>
<li><a href="https://nodejs.org/api/documentation.html" class="nav-documentation">About these Docs</a></li>
<li><a href="https://nodejs.org/api/synopsis.html" class="nav-synopsis">Usage &amp; Example</a></li>
</ul>
<div class="line"></div>
<ul>
<li><a href="https://nodejs.org/api/assert.html" class="nav-assert">Assertion Testing</a></li>
<li><a href="https://nodejs.org/api/async_hooks.html" class="nav-async_hooks">Async Hooks</a></li>
<li><a href="https://nodejs.org/api/buffer.html" class="nav-buffer">Buffer</a></li>
<li><a href="https://nodejs.org/api/addons.html" class="nav-addons">C++ Addons</a></li>
<li><a href="https://nodejs.org/api/n-api.html" class="nav-n-api">C/C++ Addons - N-API</a></li>
<li><a href="https://nodejs.org/api/child_process.html" class="nav-child_process">Child Processes</a></li>
<li><a href="https://nodejs.org/api/cluster.html" class="nav-cluster">Cluster</a></li>
<li><a href="https://nodejs.org/api/cli.html" class="nav-cli">Command Line Options</a></li>
<li><a href="https://nodejs.org/api/console.html" class="nav-console">Console</a></li>
<li><a href="https://nodejs.org/api/crypto.html" class="nav-crypto">Crypto</a></li>
<li><a href="https://nodejs.org/api/debugger.html" class="nav-debugger">Debugger</a></li>
<li><a href="https://nodejs.org/api/deprecations.html" class="nav-deprecations">Deprecated APIs</a></li>
<li><a href="https://nodejs.org/api/dns.html" class="nav-dns">DNS</a></li>
<li><a href="https://nodejs.org/api/domain.html" class="nav-domain">Domain</a></li>
<li><a href="https://nodejs.org/api/esm.html" class="nav-esm">ECMAScript Modules</a></li>
<li><a href="https://nodejs.org/api/errors.html" class="nav-errors">Errors</a></li>
<li><a href="https://nodejs.org/api/events.html" class="nav-events">Events</a></li>
<li><a href="https://nodejs.org/api/fs.html" class="nav-fs">File System</a></li>
<li><a href="https://nodejs.org/api/globals.html" class="nav-globals">Globals</a></li>
<li><a href="https://nodejs.org/api/http.html" class="nav-http">HTTP</a></li>
<li><a href="https://nodejs.org/api/http2.html" class="nav-http2">HTTP/2</a></li>
<li><a href="https://nodejs.org/api/https.html" class="nav-https">HTTPS</a></li>
<li><a href="https://nodejs.org/api/inspector.html" class="nav-inspector">Inspector</a></li>
<li><a href="https://nodejs.org/api/intl.html" class="nav-intl">Internationalization</a></li>
<li><a href="https://nodejs.org/api/modules.html" class="nav-modules">Modules</a></li>
<li><a href="https://nodejs.org/api/net.html" class="nav-net">Net</a></li>
<li><a href="https://nodejs.org/api/os.html" class="nav-os">OS</a></li>
<li><a href="https://nodejs.org/api/path.html" class="nav-path">Path</a></li>
<li><a href="https://nodejs.org/api/perf_hooks.html" class="nav-perf_hooks">Performance Hooks</a></li>
<li><a href="https://nodejs.org/api/policy.html" class="nav-policy">Policies</a></li>
<li><a href="https://nodejs.org/api/process.html" class="nav-process">Process</a></li>
<li><a href="https://nodejs.org/api/punycode.html" class="nav-punycode">Punycode</a></li>
<li><a href="https://nodejs.org/api/querystring.html" class="nav-querystring">Query Strings</a></li>
<li><a href="https://nodejs.org/api/readline.html" class="nav-readline">Readline</a></li>
<li><a href="https://nodejs.org/api/repl.html" class="nav-repl">REPL</a></li>
<li><a href="https://nodejs.org/api/report.html" class="nav-report">Report</a></li>
<li><a href="https://nodejs.org/api/stream.html" class="nav-stream">Stream</a></li>
<li><a href="https://nodejs.org/api/string_decoder.html" class="nav-string_decoder">String Decoder</a></li>
<li><a href="https://nodejs.org/api/timers.html" class="nav-timers">Timers</a></li>
<li><a href="https://nodejs.org/api/tls.html" class="nav-tls">TLS/SSL</a></li>
<li><a href="https://nodejs.org/api/tracing.html" class="nav-tracing">Trace Events</a></li>
<li><a href="https://nodejs.org/api/tty.html" class="nav-tty active">TTY</a></li>
<li><a href="https://nodejs.org/api/dgram.html" class="nav-dgram">UDP/Datagram</a></li>
<li><a href="https://nodejs.org/api/url.html" class="nav-url">URL</a></li>
<li><a href="https://nodejs.org/api/util.html" class="nav-util">Utilities</a></li>
<li><a href="https://nodejs.org/api/v8.html" class="nav-v8">V8</a></li>
<li><a href="https://nodejs.org/api/vm.html" class="nav-vm">VM</a></li>
<li><a href="https://nodejs.org/api/worker_threads.html" class="nav-worker_threads">Worker Threads</a></li>
<li><a href="https://nodejs.org/api/zlib.html" class="nav-zlib">Zlib</a></li>
</ul>
<div class="line"></div>
<ul>
<li><a href="https://github.com/nodejs/node" class="nav-https-github-com-nodejs-node">GitHub Repo &amp; Issue Tracker</a></li>
</ul>
    </div>

    <div id="column1" data-id="tty" class="interior">
      <header>
        <h1>Node.js v12.10.0 Documentation</h1>
        <div id="gtoc">
          <ul>
            <li>
              <a href="https://nodejs.org/api/index.html" name="toc">Index</a>
            </li>
            <li>
              <a href="https://nodejs.org/api/all.html">View on single page</a>
            </li>
            <li>
              <a href="https://nodejs.org/api/tty.json">View as JSON</a>
            </li>
            
    <li class="version-picker">
      <a href="#">View another version <span>▼</span></a>
      <ol class="version-picker"><li><a href="https://nodejs.org/docs/latest-v12.x/api/tty.html">12.x</a></li>
<li><a href="https://nodejs.org/docs/latest-v11.x/api/tty.html">11.x</a></li>
<li><a href="https://nodejs.org/docs/latest-v10.x/api/tty.html">10.x <b>LTS</b></a></li>
<li><a href="https://nodejs.org/docs/latest-v9.x/api/tty.html">9.x</a></li>
<li><a href="https://nodejs.org/docs/latest-v8.x/api/tty.html">8.x <b>LTS</b></a></li>
<li><a href="https://nodejs.org/docs/latest-v7.x/api/tty.html">7.x</a></li>
<li><a href="https://nodejs.org/docs/latest-v6.x/api/tty.html">6.x</a></li>
<li><a href="https://nodejs.org/docs/latest-v5.x/api/tty.html">5.x</a></li>
<li><a href="https://nodejs.org/docs/latest-v4.x/api/tty.html">4.x</a></li>
<li><a href="https://nodejs.org/docs/latest-v0.12.x/api/tty.html">0.12.x</a></li>
<li><a href="https://nodejs.org/docs/latest-v0.10.x/api/tty.html">0.10.x</a></li></ol>
    </li>
  
            <li class="edit_on_github"><a href="https://github.com/nodejs/node/edit/master/doc/api/tty.md"><span class="github_icon"><svg height="16" width="16" viewBox="0 0 16.1 16.1" fill="currentColor"><path d="M8 0a8 8 0 0 0-2.5 15.6c.4 0 .5-.2.5-.4v-1.5c-2 .4-2.5-.5-2.7-1 0-.1-.5-.9-.8-1-.3-.2-.7-.6 0-.6.6 0 1 .6 1.2.8.7 1.2 1.9 1 2.4.7 0-.5.2-.9.5-1-1.8-.3-3.7-1-3.7-4 0-.9.3-1.6.8-2.2 0-.2-.3-1 .1-2 0 0 .7-.3 2.2.7a7.4 7.4 0 0 1 4 0c1.5-1 2.2-.8 2.2-.8.5 1.1.2 2 .1 2.1.5.6.8 1.3.8 2.2 0 3-1.9 3.7-3.6 4 .3.2.5.7.5 1.4v2.2c0 .2.1.5.5.4A8 8 0 0 0 16 8a8 8 0 0 0-8-8z"></path></svg></span>Edit on GitHub</a></li>
          </ul>
        </div>
        <hr>
      </header>

      <div id="toc">
        <h2>Table of Contents</h2>
        <ul>
<li>
<p><span class="stability_2"><a href="#tty_tty">TTY</a></span></p>
<ul>
<li>
<p><a href="#tty_class_tty_readstream">Class: tty.ReadStream</a></p>
<ul>
<li><a href="#tty_readstream_israw">readStream.isRaw</a></li>
<li><a href="#tty_readstream_istty">readStream.isTTY</a></li>
<li><a href="#tty_readstream_setrawmode_mode">readStream.setRawMode(mode)</a></li>
</ul>
</li>
<li>
<p><a href="#tty_class_tty_writestream">Class: tty.WriteStream</a></p>
<ul>
<li><a href="#tty_event_resize">Event: 'resize'</a></li>
<li><a href="#tty_writestream_clearline_dir_callback">writeStream.clearLine(dir[, callback])</a></li>
<li><a href="#tty_writestream_clearscreendown_callback">writeStream.clearScreenDown([callback])</a></li>
<li><a href="#tty_writestream_columns">writeStream.columns</a></li>
<li><a href="#tty_writestream_cursorto_x_y_callback">writeStream.cursorTo(x[, y][, callback])</a></li>
<li><a href="#tty_writestream_getcolordepth_env">writeStream.getColorDepth([env])</a></li>
<li><a href="#tty_writestream_getwindowsize">writeStream.getWindowSize()</a></li>
<li><a href="#tty_writestream_hascolors_count_env">writeStream.hasColors([count][, env])</a></li>
<li><a href="#tty_writestream_istty">writeStream.isTTY</a></li>
<li><a href="#tty_writestream_movecursor_dx_dy_callback">writeStream.moveCursor(dx, dy[, callback])</a></li>
<li><a href="#tty_writestream_rows">writeStream.rows</a></li>
</ul>
</li>
<li><a href="#tty_tty_isatty_fd">tty.isatty(fd)</a></li>
</ul>
</li>
</ul>
      </div>

      <div id="apicontent">
        <h1>TTY<span><a class="mark" href="#tty_tty" id="tty_tty">#</a></span></h1>

<p></p><div class="api_stability api_stability_2"><a href="https://nodejs.org/api/documentation.html#documentation_stability_index">Stability: 2</a> - Stable</div><p></p>
<p>The <code>tty</code> module provides the <code>tty.ReadStream</code> and <code>tty.WriteStream</code> classes.
In most cases, it will not be necessary or possible to use this module directly.
However, it can be accessed using:</p>
<pre><code class="language-js">const tty = require('tty');
</code></pre>
<p>When Node.js detects that it is being run with a text terminal ("TTY")
attached, <a href="https://nodejs.org/api/process.html#process_process_stdin"><code>process.stdin</code></a> will, by default, be initialized as an instance of
<code>tty.ReadStream</code> and both <a href="https://nodejs.org/api/process.html#process_process_stdout"><code>process.stdout</code></a> and <a href="https://nodejs.org/api/process.html#process_process_stderr"><code>process.stderr</code></a> will, by
default be instances of <code>tty.WriteStream</code>. The preferred method of determining
whether Node.js is being run within a TTY context is to check that the value of
the <code>process.stdout.isTTY</code> property is <code>true</code>:</p>
<pre><code class="language-sh">$ node -p -e "Boolean(process.stdout.isTTY)"
true
$ node -p -e "Boolean(process.stdout.isTTY)" | cat
false
</code></pre>
<p>In most cases, there should be little to no reason for an application to
manually create instances of the <code>tty.ReadStream</code> and <code>tty.WriteStream</code>
classes.</p>
<h2>Class: tty.ReadStream<a class="srclink" href="https://github.com/nodejs/node/blob/3a2e75d9a5c31d20e429d505b82dd182e33f459a/lib/tty.js#L42">[src]</a><span><a class="mark" href="#tty_class_tty_readstream" id="tty_class_tty_readstream">#</a></span></h2>
<div class="api_metadata">
<span>Added in: v0.5.8</span>
</div>
<ul>
<li>Extends: <a href="https://nodejs.org/api/net.html#net_class_net_socket" class="type">&lt;net.Socket&gt;</a></li>
</ul>
<p>Represents the readable side of a TTY. In normal circumstances
<a href="https://nodejs.org/api/process.html#process_process_stdin"><code>process.stdin</code></a> will be the only <code>tty.ReadStream</code> instance in a Node.js
process and there should be no reason to create additional instances.</p>
<h3>readStream.isRaw<span><a class="mark" href="#tty_readstream_israw" id="tty_readstream_israw">#</a></span></h3>
<div class="api_metadata">
<span>Added in: v0.7.7</span>
</div>
<p>A <code>boolean</code> that is <code>true</code> if the TTY is currently configured to operate as a
raw device. Defaults to <code>false</code>.</p>
<h3>readStream.isTTY<span><a class="mark" href="#tty_readstream_istty" id="tty_readstream_istty">#</a></span></h3>
<div class="api_metadata">
<span>Added in: v0.5.8</span>
</div>
<p>A <code>boolean</code> that is always <code>true</code> for <code>tty.ReadStream</code> instances.</p>
<h3>readStream.setRawMode(mode)<span><a class="mark" href="#tty_readstream_setrawmode_mode" id="tty_readstream_setrawmode_mode">#</a></span></h3>
<div class="api_metadata">
<span>Added in: v0.7.7</span>
</div>
<ul>
<li><code>mode</code> <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Boolean_type" class="type">&lt;boolean&gt;</a> If <code>true</code>, configures the <code>tty.ReadStream</code> to operate as a
raw device. If <code>false</code>, configures the <code>tty.ReadStream</code> to operate in its
default mode. The <code>readStream.isRaw</code> property will be set to the resulting
mode.</li>
<li>Returns: <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/this" class="type">&lt;this&gt;</a> - the read stream instance.</li>
</ul>
<p>Allows configuration of <code>tty.ReadStream</code> so that it operates as a raw device.</p>
<p>When in raw mode, input is always available character-by-character, not
including modifiers. Additionally, all special processing of characters by the
terminal is disabled, including echoing input characters.
<code>CTRL</code>+<code>C</code> will no longer cause a <code>SIGINT</code> when in this mode.</p>
<h2>Class: tty.WriteStream<a class="srclink" href="https://github.com/nodejs/node/blob/3a2e75d9a5c31d20e429d505b82dd182e33f459a/lib/tty.js#L80">[src]</a><span><a class="mark" href="#tty_class_tty_writestream" id="tty_class_tty_writestream">#</a></span></h2>
<div class="api_metadata">
<span>Added in: v0.5.8</span>
</div>
<ul>
<li>Extends: <a href="https://nodejs.org/api/net.html#net_class_net_socket" class="type">&lt;net.Socket&gt;</a></li>
</ul>
<p>Represents the writable side of a TTY. In normal circumstances,
<a href="https://nodejs.org/api/process.html#process_process_stdout"><code>process.stdout</code></a> and <a href="https://nodejs.org/api/process.html#process_process_stderr"><code>process.stderr</code></a> will be the only
<code>tty.WriteStream</code> instances created for a Node.js process and there
should be no reason to create additional instances.</p>
<h3>Event: 'resize'<span><a class="mark" href="#tty_event_resize" id="tty_event_resize">#</a></span></h3>
<div class="api_metadata">
<span>Added in: v0.7.7</span>
</div>
<p>The <code>'resize'</code> event is emitted whenever either of the <code>writeStream.columns</code>
or <code>writeStream.rows</code> properties have changed. No arguments are passed to the
listener callback when called.</p>
<pre><code class="language-js">process.stdout.on('resize', () =&gt; {
  console.log('screen size has changed!');
  console.log(`${process.stdout.columns}x${process.stdout.rows}`);
});
</code></pre>
<h3>writeStream.clearLine(dir[, callback])<span><a class="mark" href="#tty_writestream_clearline_dir_callback" id="tty_writestream_clearline_dir_callback">#</a></span></h3>
<div class="api_metadata">
<details class="changelog"><summary>History</summary>
<table>
<tbody><tr><th>Version</th><th>Changes</th></tr>
<tr><td>v12.7.0</td>
<td><p>The stream's write() callback and return value are exposed.</p></td></tr>
<tr><td>v0.7.7</td>
<td><p><span>Added in: v0.7.7</span></p></td></tr>
</tbody></table>
</details>
</div>
<ul>
<li>
<p><code>dir</code> <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Number_type" class="type">&lt;number&gt;</a></p>
<ul>
<li><code>-1</code> - to the left from cursor</li>
<li><code>1</code> - to the right from cursor</li>
<li><code>0</code> - the entire line</li>
</ul>
</li>
<li><code>callback</code> <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function" class="type">&lt;Function&gt;</a> Invoked once the operation completes.</li>
<li>Returns: <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Boolean_type" class="type">&lt;boolean&gt;</a> <code>false</code> if the stream wishes for the calling code to wait
for the <code>'drain'</code> event to be emitted before continuing to write additional
data; otherwise <code>true</code>.</li>
</ul>
<p><code>writeStream.clearLine()</code> clears the current line of this <code>WriteStream</code> in a
direction identified by <code>dir</code>.</p>
<h3>writeStream.clearScreenDown([callback])<span><a class="mark" href="#tty_writestream_clearscreendown_callback" id="tty_writestream_clearscreendown_callback">#</a></span></h3>
<div class="api_metadata">
<details class="changelog"><summary>History</summary>
<table>
<tbody><tr><th>Version</th><th>Changes</th></tr>
<tr><td>v12.7.0</td>
<td><p>The stream's write() callback and return value are exposed.</p></td></tr>
<tr><td>v0.7.7</td>
<td><p><span>Added in: v0.7.7</span></p></td></tr>
</tbody></table>
</details>
</div>
<ul>
<li><code>callback</code> <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function" class="type">&lt;Function&gt;</a> Invoked once the operation completes.</li>
<li>Returns: <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Boolean_type" class="type">&lt;boolean&gt;</a> <code>false</code> if the stream wishes for the calling code to wait
for the <code>'drain'</code> event to be emitted before continuing to write additional
data; otherwise <code>true</code>.</li>
</ul>
<p><code>writeStream.clearScreenDown()</code> clears this <code>WriteStream</code> from the current
cursor down.</p>
<h3>writeStream.columns<span><a class="mark" href="#tty_writestream_columns" id="tty_writestream_columns">#</a></span></h3>
<div class="api_metadata">
<span>Added in: v0.7.7</span>
</div>
<p>A <code>number</code> specifying the number of columns the TTY currently has. This property
is updated whenever the <code>'resize'</code> event is emitted.</p>
<h3>writeStream.cursorTo(x[, y][, callback])<span><a class="mark" href="#tty_writestream_cursorto_x_y_callback" id="tty_writestream_cursorto_x_y_callback">#</a></span></h3>
<div class="api_metadata">
<details class="changelog"><summary>History</summary>
<table>
<tbody><tr><th>Version</th><th>Changes</th></tr>
<tr><td>v12.7.0</td>
<td><p>The stream's write() callback and return value are exposed.</p></td></tr>
<tr><td>v0.7.7</td>
<td><p><span>Added in: v0.7.7</span></p></td></tr>
</tbody></table>
</details>
</div>
<ul>
<li><code>x</code> <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Number_type" class="type">&lt;number&gt;</a></li>
<li><code>y</code> <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Number_type" class="type">&lt;number&gt;</a></li>
<li><code>callback</code> <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function" class="type">&lt;Function&gt;</a> Invoked once the operation completes.</li>
<li>Returns: <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Boolean_type" class="type">&lt;boolean&gt;</a> <code>false</code> if the stream wishes for the calling code to wait
for the <code>'drain'</code> event to be emitted before continuing to write additional
data; otherwise <code>true</code>.</li>
</ul>
<p><code>writeStream.cursorTo()</code> moves this <code>WriteStream</code>'s cursor to the specified
position.</p>
<h3>writeStream.getColorDepth([env])<span><a class="mark" href="#tty_writestream_getcolordepth_env" id="tty_writestream_getcolordepth_env">#</a></span></h3>
<div class="api_metadata">
<span>Added in: v9.9.0</span>
</div>
<ul>
<li><code>env</code> <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object" class="type">&lt;Object&gt;</a> An object containing the environment variables to check. This
enables simulating the usage of a specific terminal. <strong>Default:</strong>
<code>process.env</code>.</li>
<li>Returns: <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Number_type" class="type">&lt;number&gt;</a></li>
</ul>
<p>Returns:</p>
<ul>
<li><code>1</code> for 2,</li>
<li><code>4</code> for 16,</li>
<li><code>8</code> for 256,</li>
<li><code>24</code> for 16,777,216
colors supported.</li>
</ul>
<p>Use this to determine what colors the terminal supports. Due to the nature of
colors in terminals it is possible to either have false positives or false
negatives. It depends on process information and the environment variables that
may lie about what terminal is used.
It is possible to pass in an <code>env</code> object to simulate the usage of a specific
terminal. This can be useful to check how specific environment settings behave.</p>
<p>To enforce a specific color support, use one of the below environment settings.</p>
<ul>
<li>2 colors: <code>FORCE_COLOR = 0</code> (Disables colors)</li>
<li>16 colors: <code>FORCE_COLOR = 1</code></li>
<li>256 colors: <code>FORCE_COLOR = 2</code></li>
<li>16,777,216 colors: <code>FORCE_COLOR = 3</code></li>
</ul>
<p>Disabling color support is also possible by using the <code>NO_COLOR</code> and
<code>NODE_DISABLE_COLORS</code> environment variables.</p>
<h3>writeStream.getWindowSize()<span><a class="mark" href="#tty_writestream_getwindowsize" id="tty_writestream_getwindowsize">#</a></span></h3>
<div class="api_metadata">
<span>Added in: v0.7.7</span>
</div>
<ul>
<li>Returns: <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Number_type" class="type">&lt;number[]&gt;</a></li>
</ul>
<p><code>writeStream.getWindowSize()</code> returns the size of the <a href="https://nodejs.org/api/tty.html">TTY</a>
corresponding to this <code>WriteStream</code>. The array is of the type
<code>[numColumns, numRows]</code> where <code>numColumns</code> and <code>numRows</code> represent the number
of columns and rows in the corresponding <a href="https://nodejs.org/api/tty.html">TTY</a>.</p>
<h3>writeStream.hasColors([count][, env])<span><a class="mark" href="#tty_writestream_hascolors_count_env" id="tty_writestream_hascolors_count_env">#</a></span></h3>
<div class="api_metadata">
<span>Added in: v11.13.0</span>
</div>
<ul>
<li><code>count</code> <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Number_type" class="type">&lt;integer&gt;</a> The number of colors that are requested (minimum 2).
<strong>Default:</strong> 16.</li>
<li><code>env</code> <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object" class="type">&lt;Object&gt;</a> An object containing the environment variables to check. This
enables simulating the usage of a specific terminal. <strong>Default:</strong>
<code>process.env</code>.</li>
<li>Returns: <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Boolean_type" class="type">&lt;boolean&gt;</a></li>
</ul>
<p>Returns <code>true</code> if the <code>writeStream</code> supports at least as many colors as provided
in <code>count</code>. Minimum support is 2 (black and white).</p>
<p>This has the same false positives and negatives as described in
<a href="#tty_writestream_getcolordepth_env"><code>writeStream.getColorDepth()</code></a>.</p>
<pre><code class="language-js">process.stdout.hasColors();
// Returns true or false depending on if `stdout` supports at least 16 colors.
process.stdout.hasColors(256);
// Returns true or false depending on if `stdout` supports at least 256 colors.
process.stdout.hasColors({ TMUX: '1' });
// Returns true.
process.stdout.hasColors(2 ** 24, { TMUX: '1' });
// Returns false (the environment setting pretends to support 2 ** 8 colors).
</code></pre>
<h3>writeStream.isTTY<span><a class="mark" href="#tty_writestream_istty" id="tty_writestream_istty">#</a></span></h3>
<div class="api_metadata">
<span>Added in: v0.5.8</span>
</div>
<p>A <code>boolean</code> that is always <code>true</code>.</p>
<h3>writeStream.moveCursor(dx, dy[, callback])<span><a class="mark" href="#tty_writestream_movecursor_dx_dy_callback" id="tty_writestream_movecursor_dx_dy_callback">#</a></span></h3>
<div class="api_metadata">
<details class="changelog"><summary>History</summary>
<table>
<tbody><tr><th>Version</th><th>Changes</th></tr>
<tr><td>v12.7.0</td>
<td><p>The stream's write() callback and return value are exposed.</p></td></tr>
<tr><td>v0.7.7</td>
<td><p><span>Added in: v0.7.7</span></p></td></tr>
</tbody></table>
</details>
</div>
<ul>
<li><code>dx</code> <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Number_type" class="type">&lt;number&gt;</a></li>
<li><code>dy</code> <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Number_type" class="type">&lt;number&gt;</a></li>
<li><code>callback</code> <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function" class="type">&lt;Function&gt;</a> Invoked once the operation completes.</li>
<li>Returns: <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Boolean_type" class="type">&lt;boolean&gt;</a> <code>false</code> if the stream wishes for the calling code to wait
for the <code>'drain'</code> event to be emitted before continuing to write additional
data; otherwise <code>true</code>.</li>
</ul>
<p><code>writeStream.moveCursor()</code> moves this <code>WriteStream</code>'s cursor <em>relative</em> to its
current position.</p>
<h3>writeStream.rows<span><a class="mark" href="#tty_writestream_rows" id="tty_writestream_rows">#</a></span></h3>
<div class="api_metadata">
<span>Added in: v0.7.7</span>
</div>
<p>A <code>number</code> specifying the number of rows the TTY currently has. This property
is updated whenever the <code>'resize'</code> event is emitted.</p>
<h2>tty.isatty(fd)<a class="srclink" href="https://github.com/nodejs/node/blob/3a2e75d9a5c31d20e429d505b82dd182e33f459a/lib/tty.js#L38">[src]</a><span><a class="mark" href="#tty_tty_isatty_fd" id="tty_tty_isatty_fd">#</a></span></h2>
<div class="api_metadata">
<span>Added in: v0.5.8</span>
</div>
<ul>
<li><code>fd</code> <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Number_type" class="type">&lt;number&gt;</a> A numeric file descriptor</li>
<li>Returns: <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Boolean_type" class="type">&lt;boolean&gt;</a></li>
</ul>
<p>The <code>tty.isatty()</code> method returns <code>true</code> if the given <code>fd</code> is associated with
a TTY and <code>false</code> if it is not, including whenever <code>fd</code> is not a non-negative
integer.</p>
      </div>
    </div>
  </div>
  <script src="data:application/javascript;base64,/*
SHJS - Syntax Highlighting in JavaScript
Copyright (C) 2007, 2008 gnombat@users.sourceforge.net
License: http://shjs.sourceforge.net/doc/gplv3.html
*/

if (! this.sh_languages) {
  this.sh_languages = {};
}
var sh_requests = {};

function sh_isEmailAddress(url) {
  if (/^mailto:/.test(url)) {
    return false;
  }
  return url.indexOf('@') !== -1;
}

function sh_setHref(tags, numTags, inputString) {
  var url = inputString.substring(tags[numTags - 2].pos, tags[numTags - 1].pos);
  if (url.length >= 2 && url.charAt(0) === '<' && url.charAt(url.length - 1) === '>') {
    url = url.substr(1, url.length - 2);
  }
  if (sh_isEmailAddress(url)) {
    url = 'mailto:' + url;
  }
  tags[numTags - 2].node.href = url;
}

/*
Konqueror has a bug where the regular expression /$/g will not match at the end
of a line more than once:

  var regex = /$/g;
  var match;

  var line = '1234567890';
  regex.lastIndex = 10;
  match = regex.exec(line);

  var line2 = 'abcde';
  regex.lastIndex = 5;
  match = regex.exec(line2);  // fails
*/
function sh_konquerorExec(s) {
  var result = [''];
  result.index = s.length;
  result.input = s;
  return result;
}

/**
Highlights all elements containing source code in a text string.  The return
value is an array of objects, each representing an HTML start or end tag.  Each
object has a property named pos, which is an integer representing the text
offset of the tag. Every start tag also has a property named node, which is the
DOM element started by the tag. End tags do not have this property.
@param  inputString  a text string
@param  language  a language definition object
@return  an array of tag objects
*/
function sh_highlightString(inputString, language) {
  if (/Konqueror/.test(navigator.userAgent)) {
    if (! language.konquered) {
      for (var s = 0; s < language.length; s++) {
        for (var p = 0; p < language[s].length; p++) {
          var r = language[s][p][0];
          if (r.source === '$') {
            r.exec = sh_konquerorExec;
          }
        }
      }
      language.konquered = true;
    }
  }

  var a = document.createElement('a');
  var span = document.createElement('span');

  // the result
  var tags = [];
  var numTags = 0;

  // each element is a pattern object from language
  var patternStack = [];

  // the current position within inputString
  var pos = 0;

  // the name of the current style, or null if there is no current style
  var currentStyle = null;

  var output = function(s, style) {
    var length = s.length;
    // this is more than just an optimization - we don't want to output empty <span></span> elements
    if (length === 0) {
      return;
    }
    if (! style) {
      var stackLength = patternStack.length;
      if (stackLength !== 0) {
        var pattern = patternStack[stackLength - 1];
        // check whether this is a state or an environment
        if (! pattern[3]) {
          // it's not a state - it's an environment; use the style for this environment
          style = pattern[1];
        }
      }
    }
    if (currentStyle !== style) {
      if (currentStyle) {
        tags[numTags++] = {pos: pos};
        if (currentStyle === 'sh_url') {
          sh_setHref(tags, numTags, inputString);
        }
      }
      if (style) {
        var clone;
        if (style === 'sh_url') {
          clone = a.cloneNode(false);
        }
        else {
          clone = span.cloneNode(false);
        }
        clone.className = style;
        tags[numTags++] = {node: clone, pos: pos};
      }
    }
    pos += length;
    currentStyle = style;
  };

  var endOfLinePattern = /\r\n|\r|\n/g;
  endOfLinePattern.lastIndex = 0;
  var inputStringLength = inputString.length;
  while (pos < inputStringLength) {
    var start = pos;
    var end;
    var startOfNextLine;
    var endOfLineMatch = endOfLinePattern.exec(inputString);
    if (endOfLineMatch === null) {
      end = inputStringLength;
      startOfNextLine = inputStringLength;
    }
    else {
      end = endOfLineMatch.index;
      startOfNextLine = endOfLinePattern.lastIndex;
    }

    var line = inputString.substring(start, end);

    var matchCache = [];
    for (;;) {
      var posWithinLine = pos - start;

      var stateIndex;
      var stackLength = patternStack.length;
      if (stackLength === 0) {
        stateIndex = 0;
      }
      else {
        // get the next state
        stateIndex = patternStack[stackLength - 1][2];
      }

      var state = language[stateIndex];
      var numPatterns = state.length;
      var mc = matchCache[stateIndex];
      if (! mc) {
        mc = matchCache[stateIndex] = [];
      }
      var bestMatch = null;
      var bestPatternIndex = -1;
      for (var i = 0; i < numPatterns; i++) {
        var match;
        if (i < mc.length && (mc[i] === null || posWithinLine <= mc[i].index)) {
          match = mc[i];
        }
        else {
          var regex = state[i][0];
          regex.lastIndex = posWithinLine;
          match = regex.exec(line);
          mc[i] = match;
        }
        if (match !== null && (bestMatch === null || match.index < bestMatch.index)) {
          bestMatch = match;
          bestPatternIndex = i;
          if (match.index === posWithinLine) {
            break;
          }
        }
      }

      if (bestMatch === null) {
        output(line.substring(posWithinLine), null);
        break;
      }
      else {
        // got a match
        if (bestMatch.index > posWithinLine) {
          output(line.substring(posWithinLine, bestMatch.index), null);
        }

        var pattern = state[bestPatternIndex];

        var newStyle = pattern[1];
        var matchedString;
        if (newStyle instanceof Array) {
          for (var subexpression = 0; subexpression < newStyle.length; subexpression++) {
            matchedString = bestMatch[subexpression + 1];
            output(matchedString, newStyle[subexpression]);
          }
        }
        else {
          matchedString = bestMatch[0];
          output(matchedString, newStyle);
        }

        switch (pattern[2]) {
        case -1:
          // do nothing
          break;
        case -2:
          // exit
          patternStack.pop();
          break;
        case -3:
          // exitall
          patternStack.length = 0;
          break;
        default:
          // this was the start of a delimited pattern or a state/environment
          patternStack.push(pattern);
          break;
        }
      }
    }

    // end of the line
    if (currentStyle) {
      tags[numTags++] = {pos: pos};
      if (currentStyle === 'sh_url') {
        sh_setHref(tags, numTags, inputString);
      }
      currentStyle = null;
    }
    pos = startOfNextLine;
  }

  return tags;
}

////////////////////////////////////////////////////////////////////////////////
// DOM-dependent functions

function sh_getClasses(element) {
  var result = [];
  var htmlClass = element.className;
  if (htmlClass && htmlClass.length > 0) {
    var htmlClasses = htmlClass.split(' ');
    for (var i = 0; i < htmlClasses.length; i++) {
      if (htmlClasses[i].length > 0) {
        result.push(htmlClasses[i]);
      }
    }
  }
  return result;
}

function sh_addClass(element, name) {
  var htmlClasses = sh_getClasses(element);
  for (var i = 0; i < htmlClasses.length; i++) {
    if (name.toLowerCase() === htmlClasses[i].toLowerCase()) {
      return;
    }
  }
  htmlClasses.push(name);
  element.className = htmlClasses.join(' ');
}

/**
Extracts the tags from an HTML DOM NodeList.
@param  nodeList  a DOM NodeList
@param  result  an object with text, tags and pos properties
*/
function sh_extractTagsFromNodeList(nodeList, result) {
  var length = nodeList.length;
  for (var i = 0; i < length; i++) {
    var node = nodeList.item(i);
    switch (node.nodeType) {
    case 1:
      if (node.nodeName.toLowerCase() === 'br') {
        var terminator;
        if (/MSIE/.test(navigator.userAgent)) {
          terminator = '\r';
        }
        else {
          terminator = '\n';
        }
        result.text.push(terminator);
        result.pos++;
      }
      else {
        result.tags.push({node: node.cloneNode(false), pos: result.pos});
        sh_extractTagsFromNodeList(node.childNodes, result);
        result.tags.push({pos: result.pos});
      }
      break;
    case 3:
    case 4:
      result.text.push(node.data);
      result.pos += node.length;
      break;
    }
  }
}

/**
Extracts the tags from the text of an HTML element. The extracted tags will be
returned as an array of tag objects. See sh_highlightString for the format of
the tag objects.
@param  element  a DOM element
@param  tags  an empty array; the extracted tag objects will be returned in it
@return  the text of the element
@see  sh_highlightString
*/
function sh_extractTags(element, tags) {
  var result = {};
  result.text = [];
  result.tags = tags;
  result.pos = 0;
  sh_extractTagsFromNodeList(element.childNodes, result);
  return result.text.join('');
}

/**
Merges the original tags from an element with the tags produced by highlighting.
@param  originalTags  an array containing the original tags
@param  highlightTags  an array containing the highlighting tags - these must not overlap
@result  an array containing the merged tags
*/
function sh_mergeTags(originalTags, highlightTags) {
  var numOriginalTags = originalTags.length;
  if (numOriginalTags === 0) {
    return highlightTags;
  }

  var numHighlightTags = highlightTags.length;
  if (numHighlightTags === 0) {
    return originalTags;
  }

  var result = [];
  var originalIndex = 0;
  var highlightIndex = 0;

  while (originalIndex < numOriginalTags && highlightIndex < numHighlightTags) {
    var originalTag = originalTags[originalIndex];
    var highlightTag = highlightTags[highlightIndex];

    if (originalTag.pos <= highlightTag.pos) {
      result.push(originalTag);
      originalIndex++;
    }
    else {
      result.push(highlightTag);
      if (highlightTags[highlightIndex + 1].pos <= originalTag.pos) {
        highlightIndex++;
        result.push(highlightTags[highlightIndex]);
        highlightIndex++;
      }
      else {
        // new end tag
        result.push({pos: originalTag.pos});

        // new start tag
        highlightTags[highlightIndex] = {node: highlightTag.node.cloneNode(false), pos: originalTag.pos};
      }
    }
  }

  while (originalIndex < numOriginalTags) {
    result.push(originalTags[originalIndex]);
    originalIndex++;
  }

  while (highlightIndex < numHighlightTags) {
    result.push(highlightTags[highlightIndex]);
    highlightIndex++;
  }

  return result;
}

/**
Inserts tags into text.
@param  tags  an array of tag objects
@param  text  a string representing the text
@return  a DOM DocumentFragment representing the resulting HTML
*/
function sh_insertTags(tags, text) {
  var doc = document;

  var result = document.createDocumentFragment();
  var tagIndex = 0;
  var numTags = tags.length;
  var textPos = 0;
  var textLength = text.length;
  var currentNode = result;

  // output one tag or text node every iteration
  while (textPos < textLength || tagIndex < numTags) {
    var tag;
    var tagPos;
    if (tagIndex < numTags) {
      tag = tags[tagIndex];
      tagPos = tag.pos;
    }
    else {
      tagPos = textLength;
    }

    if (tagPos <= textPos) {
      // output the tag
      if (tag.node) {
        // start tag
        var newNode = tag.node;
        currentNode.appendChild(newNode);
        currentNode = newNode;
      }
      else {
        // end tag
        currentNode = currentNode.parentNode;
      }
      tagIndex++;
    }
    else {
      // output text
      currentNode.appendChild(doc.createTextNode(text.substring(textPos, tagPos)));
      textPos = tagPos;
    }
  }

  return result;
}

/**
Highlights an element containing source code.  Upon completion of this function,
the element will have been placed in the "sh_sourceCode" class.
@param  element  a DOM <pre> element containing the source code to be highlighted
@param  language  a language definition object
*/
function sh_highlightElement(element, language) {
  sh_addClass(element, 'sh_sourceCode');
  var originalTags = [];
  var inputString = sh_extractTags(element, originalTags);
  var highlightTags = sh_highlightString(inputString, language);
  var tags = sh_mergeTags(originalTags, highlightTags);
  var documentFragment = sh_insertTags(tags, inputString);
  while (element.hasChildNodes()) {
    element.removeChild(element.firstChild);
  }
  element.appendChild(documentFragment);
}

function sh_getXMLHttpRequest() {
  if (window.ActiveXObject) {
    return new ActiveXObject('Msxml2.XMLHTTP');
  }
  else if (window.XMLHttpRequest) {
    return new XMLHttpRequest();
  }
  throw 'No XMLHttpRequest implementation available';
}

function sh_load(language, element, prefix, suffix) {
  if (language in sh_requests) {
    sh_requests[language].push(element);
    return;
  }
  sh_requests[language] = [element];
  var request = sh_getXMLHttpRequest();
  var url = prefix + 'sh_' + language + suffix;
  request.open('GET', url, true);
  request.onreadystatechange = function () {
    if (request.readyState === 4) {
      try {
        if (! request.status || request.status === 200) {
          eval(request.responseText);
          var elements = sh_requests[language];
          for (var i = 0; i < elements.length; i++) {
            sh_highlightElement(elements[i], sh_languages[language]);
          }
        }
        else {
          throw 'HTTP error: status ' + request.status;
        }
      }
      finally {
        request = null;
      }
    }
  };
  request.send(null);
}

/**
Highlights all elements containing source code on the current page. Elements
containing source code must be "pre" elements with a "class" attribute of
"sh_LANGUAGE", where LANGUAGE is a valid language identifier; e.g., "sh_java"
identifies the element as containing "java" language source code.
*/
function highlight(prefix, suffix, tag) {
  var nodeList = document.getElementsByTagName(tag);
  for (var i = 0; i < nodeList.length; i++) {
    var element = nodeList.item(i);
    var htmlClasses = sh_getClasses(element);
    var highlighted = false;
    var donthighlight = false;
    for (var j = 0; j < htmlClasses.length; j++) {
      var htmlClass = htmlClasses[j].toLowerCase();
      if (htmlClass === 'sh_none') {
        donthighlight = true
        continue;
      }
      if (htmlClass.substr(0, 3) === 'sh_') {
        var language = htmlClass.substring(3);
        if (language in sh_languages) {
          sh_highlightElement(element, sh_languages[language]);
          highlighted = true;
        }
        else if (typeof(prefix) === 'string' && typeof(suffix) === 'string') {
          sh_load(language, element, prefix, suffix);
        }
        else {
          throw 'Found <' + tag + '> element with class="' + htmlClass + '", but no such language exists';
        }
        break;
      }
    }
    if (highlighted === false && donthighlight == false) {
      sh_highlightElement(element, sh_languages["javascript"]);
    }
  }
}



function sh_highlightDocument(prefix, suffix) {
  highlight(prefix, suffix, 'tt');
  highlight(prefix, suffix, 'code');
  highlight(prefix, suffix, 'pre');
}
"></script>
  <script src="data:application/javascript;base64,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"></script>
  <script>highlight(undefined, undefined, 'pre');</script>


</body></html>