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README.md
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
# Using npm
npm install --save anser
# Using yarn
yarn add anser
📋 Example
const Anser = require("anser");
const 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,
// clearLine: undefined,
// decoration: null,
// was_processed: false,
// isEmpty: [Function: isEmpty] },
// { content: 'Hello',
// fg: '255, 0, 0',
// bg: null,
// fg_truecolor: null,
// bg_truecolor: null,
// clearLine: false,
// decoration: null,
// was_processed: true,
// isEmpty: [Function: isEmpty] },
// { content: ' ',
// fg: null,
// bg: null,
// fg_truecolor: null,
// bg_truecolor: null,
// clearLine: false,
// decoration: null,
// was_processed: false,
// isEmpty: [Function: isEmpty] },
// { content: 'World',
// fg: null,
// bg: '255, 255, 0',
// fg_truecolor: null,
// bg_truecolor: null,
// clearLine: false,
// decoration: null,
// was_processed: true,
// isEmpty: [Function: isEmpty] },
// { content: '',
// fg: null,
// bg: null,
// fg_truecolor: null,
// bg_truecolor: null,
// clearLine: false,
// decoration: null,
// was_processed: false,
// isEmpty: [Function: isEmpty] } ]
When using TypeScript you can do the following:
import * as Anser from 'anser';
const 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>
❓ Get Help
There are few ways to get help:
- Please post questions on Stack Overflow. You can open issues with questions, as long you add a link to your Stack Overflow question.
- For bug reports and feature requests, open issues. 🐛
- For direct and quick help, you can use Codementor. 🚀
📝 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 theprocess
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 theprocess
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 toprocessChunk
method, extended with: json
(Boolean): Iftrue
, the result will be an object.use_classes
(Boolean): Iftrue
, 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): Iftrue
, the result will be an object.use_classes
(Boolean): Iftrue
, 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).clearLine
(Boolean):true
if a carriageReturn \r was fount at end of line.was_processed
(Bolean):true
if the colors were processed,false
otherwise.isEmpty
(Function): A function returningtrue
if the content is empty, orfalse
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): Iftrue
, the result will be an object.use_classes
(Boolean): Iftrue
, 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.
💖 Support my projects
I open-source almost everything I can, and I try to reply to everyone needing help using these projects. Obviously, this takes time. You can integrate and use these projects in your applications for free! You can even change the source code and redistribute (even resell it).
However, if you get some profit from this or just want to encourage me to continue creating stuff, there are few ways you can do it:
-
Starring and sharing the projects you like 🚀
-
—I love books! I will remember you after years if you buy me one. 😁 📖
-
—You can make one-time donations via PayPal. I'll probably buy a
coffeetea. 🍵 -
—Set up a recurring monthly donation and you will get interesting news about what I'm doing (things that I don't share with everyone).
-
Bitcoin—You can send me bitcoins at this address (or scanning the code below):
1P9BRsmazNQcuyTxEqveUsnf5CERdq35V6
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. ✨
react-native
ansi-to-react
mesh-devtool
nuclide-commons-ui
@next/react-dev-overlay
transformime
@viankakrisna/react-dev-utils
react-webpack-build-helper
redux-devtools-trace-monitor
timer-react-dev-utils
react-dev-utils-extra
ansi-html-themed
uyun-react-dev-utils
react-dev-utils-sebfl-update
@jjavery/react-error-overlay
lambda-dev-utils
react-error-overlay-canary
@axio/react-dev-utils
react-error-overlay-dangerous
@classflow/react-dev-utils
ansi-to-json
nuclide
react-native-okhttp-fork
@devpodio/console
ipynb2html
webpack-isomorphic-dev-middleware
@theia/console
stack-frame-overlay
cycle-dev-utils
@viankakrisna/react-error-overlay
callstack-task-react-error-overlay
callstack-task-react-dev-utils
ansi-to-react-with-options
@plansys/react-dev-utils
zc-react-dev-utils
@ehyland-org/react-error-overlay
react-dev-utils-custom-hmr
ansi-to-react-with-classes
linklog
@naze/error
react-error-guard
singularityui-tailer
@unforgiven/react-native
react-ansi
@digibear/socket-bridge
ada-pack
react-native-hlf-wrapper
webpack-universal-compiler
@prague-digi/react-error-overlay
kunai
@apardellass/react-native-audio-stream
react-native-tvos
react-native-plugpag-wrapper
@codewars/jest-reporter