anser

A low level parser for ANSI sequences.

🚀 Features

Converts text containing ANSI color escape codes into equivalent HTML elements.
Allows converting the input into JSON output.
HTML escaping
Converts links into HTML elements
Friendly APIs to use with virtual dom libraries

☁️ Installation

$ npm i --save anser

📋 Example

var Anser = require("anser");

var txt = "\u001b[38;5;196mHello\u001b[39m \u001b[48;5;226mWorld\u001b[49m";

console.log(Anser.ansiToHtml(txt));
// <span style="color:rgb(255, 0, 0)">Hello</span> <span style="background-color:rgb(255, 255, 0)">World</span>

console.log(Anser.ansiToHtml(txt, { use_classes: true }));
// <span class="ansi-palette-196-fg">Hello</span> <span class="ansi-palette-226-bg">World</span>

console.log(Anser.ansiToJson(txt));
// [ { content: '',
//     fg: null,
//     bg: null,
//     fg_truecolor: null,
//     bg_truecolor: null,
//     was_processed: false,
//     isEmpty: [Function] },
//   { content: 'Hello',
//     fg: '255, 0, 0',
//     bg: null,
//     fg_truecolor: null,
//     bg_truecolor: null,
//     was_processed: true,
//     isEmpty: [Function] },
//   { content: ' ',
//     fg: null,
//     bg: null,
//     fg_truecolor: null,
//     bg_truecolor: null,
//     was_processed: false,
//     isEmpty: [Function] },
//   { content: 'World',
//     fg: null,
//     bg: '255, 255, 0',
//     fg_truecolor: null,
//     bg_truecolor: null,
//     was_processed: true,
//     isEmpty: [Function] },
//   { content: '',
//     fg: null,
//     bg: null,
//     fg_truecolor: null,
//     bg_truecolor: null,
//     was_processed: false,
//     isEmpty: [Function] } ]

📝 Documentation

`Anser.escapeForHtml(txt)`

Escape the input HTML.

This does the minimum escaping of text to make it compliant with HTML. In particular, the '&','<', and '>' characters are escaped. This should be run prior to ansiToHtml.

Params

String txt: The input text (containing the ANSI snippets).

Return

String The escaped html.

`Anser.linkify(txt)`

Adds the links in the HTML.

This replaces any links in the text with anchor tags that display the link. The links should have at least one whitespace character surrounding it. Also, you should apply this after you have run ansiToHtml on the text.

Params

String txt: The input text.

Return

String The HTML containing the tags (unescaped).

`Anser.ansiToHtml(txt, options)`

This replaces ANSI terminal escape codes with SPAN tags that wrap the content.

This function only interprets ANSI SGR (Select Graphic Rendition) codes that can be represented in HTML. For example, cursor movement codes are ignored and hidden from output. The default style uses colors that are very close to the prescribed standard. The standard assumes that the text will have a black background. These colors are set as inline styles on the SPAN tags.

Another option is to set use_classes: true in the options argument. This will instead set classes on the spans so the colors can be set via CSS. The class names used are of the format ansi-*-fg/bg and ansi-bright-*-fg/bg where * is the color name, i.e black/red/green/yellow/blue/magenta/cyan/white.

Params

String txt: The input text.
Object options: The options passed to the ansiToHTML method.

Return

String The HTML output.

`Anser.ansiToJson(txt, options)`

Converts ANSI input into JSON output.

Params

String txt: The input text.
Object options: The options passed to the ansiToHTML method.

Return

String The HTML output.

`Anser.ansiToText(txt)`

Converts ANSI input into text output.

Params

String txt: The input text.

Return

String The text output.

`Anser()`

The Anser class.

Return

Anser

`setupPalette()`

Sets up the palette.

`escapeForHtml(txt)`

Escapes the input text.

Params

String txt: The input text.

Return

String The escpaed HTML output.

`linkify(txt)`

Adds HTML link elements.

Params

String txt: The input text.

Return

String The HTML output containing link elements.

`ansiToHtml(txt, options)`

Converts ANSI input into HTML output.

Params

String txt: The input text.
Object options: The options passed ot the process method.

Return

String The HTML output.

`ansiToJson(txt, options)`

Converts ANSI input into HTML output.

Params

String txt: The input text.
Object options: The options passed ot the process method.

Return

String The JSON output.

`ansiToText(txt)`

Converts ANSI input into HTML output.

Params

String txt: The input text.

Return

String The text output.

`process(txt, options, markup)`

Processes the input.

Params

String txt: The input text.
Object options: An object passed to processChunk method, extended with:
json (Boolean): If true, the result will be an object.
use_classes (Boolean): If true, HTML classes will be appended to the HTML output.
Boolean markup:

`processChunkJson(text, options, markup)`

Processes the current chunk into json output.

Params

String text: The input text.
Object options: An object containing the following fields:
json (Boolean): If true, the result will be an object.
use_classes (Boolean): If true, HTML classes will be appended to the HTML output.
Boolean markup: If false, the colors will not be parsed.

Return

Object The result object:
content (String): The text.
fg (String|null): The foreground color.
bg (String|null): The background color.
fg_truecolor (String|null): The foreground true color (if 16m color is enabled).
bg_truecolor (String|null): The background true color (if 16m color is enabled).
was_processed (Bolean): true if the colors were processed, false otherwise.
isEmpty (Function): A function returning true if the content is empty, or false otherwise.

`processChunk(text, options, markup)`

Processes the current chunk of text.

Params

String text: The input text.
Object options: An object containing the following fields:
json (Boolean): If true, the result will be an object.
use_classes (Boolean): If true, HTML classes will be appended to the HTML output.
Boolean markup: If false, the colors will not be parsed.

Return

Object|String The result (object if json is wanted back or string otherwise).

😋 How to contribute

Have an idea? Found a bug? See how to contribute.

💰 Donations

Another way to support the development of my open-source modules is to set up a recurring donation, via Patreon. 🚀

PayPal donations are appreciated too! Each dollar helps.

Thanks! ❤️

🍰 Thanks

This project is highly based on ansi_up, by @drudru. Thanks! 🍰

💫 Where is this library used?

If you are using this library in one of your projects, add it in this list. ✨

ansi-to-json—Convert ANSI strings into JSON output.
nterm (by Darius Huntly)—A Node Terminal
singularityui-tailer (by Danny Wolf)—A robust log tailer
transformime (by nteract)—Transforms MIMEtypes to HTML Elements

pplewa/anser

anser

🚀 Features

☁️ Installation

📋 Example

📝 Documentation

Anser.escapeForHtml(txt)

Params

Return

Anser.linkify(txt)

Params

Return

Anser.ansiToHtml(txt, options)

Params

Return

Anser.ansiToJson(txt, options)

Params

Return

Anser.ansiToText(txt)

Params

Return

Anser()

Return

setupPalette()

escapeForHtml(txt)

Params

Return

linkify(txt)

Params

Return

ansiToHtml(txt, options)

Params

Return

ansiToJson(txt, options)

Params

Return

ansiToText(txt)

Params

Return

process(txt, options, markup)

Params

processChunkJson(text, options, markup)

Params

Return

processChunk(text, options, markup)

Params

Return

😋 How to contribute

💰 Donations

🍰 Thanks

💫 Where is this library used?

📜 License

`Anser.escapeForHtml(txt)`

`Anser.linkify(txt)`

`Anser.ansiToHtml(txt, options)`

`Anser.ansiToJson(txt, options)`

`Anser.ansiToText(txt)`

`Anser()`

`setupPalette()`

`escapeForHtml(txt)`

`linkify(txt)`

`ansiToHtml(txt, options)`

`ansiToJson(txt, options)`

`ansiToText(txt)`

`process(txt, options, markup)`

`processChunkJson(text, options, markup)`

`processChunk(text, options, markup)`