[![Build Status](https://travis-ci.org/npkgz/cli-progress.svg?branch=master)](https://travis-ci.org/npkgz/cli-progress) [Single Bar](#single-bar-mode) | [Multi Bar](#multi-bar-mode) | [Options](#options-1) | [Examples](examples/) | [Presets](presets/) | [Events](docs/events.md) CLI-Progress ============ easy to use progress-bar for command-line/terminal applications ![Demo](assets/cli-progress.gif) ![Demo](assets/presets.png) Install -------- ```bash $ yarn add cli-progress $ npm install cli-progress --save ``` Features -------- * **Simple**, **Robust** and **Easy** to use * Full customizable output format (various placeholders are available) * Single progressbar mode * Multi progessbar mode * Custom Bar Characters * FPS limiter * ETA calculation based on elapsed time * Custom Tokens to display additional data (payload) within the bar * TTY and NOTTY mode * No callbacks required - designed as pure, external controlled UI widget * Works in Asynchronous and Synchronous tasks * Preset/Theme support * Custom bar formatters (via callback) * Logging during multibar operation Usage ------------ Multiple examples are available e.g. [example.js](https://github.com/npkgz/cli-progress/blob/master/examples/example.js) - just try it `$ node example.js` ```js const cliProgress = require('cli-progress'); // create a new progress bar instance and use shades_classic theme const bar1 = new cliProgress.SingleBar({}, cliProgress.Presets.shades_classic); // start the progress bar with a total value of 200 and start value of 0 bar1.start(200, 0); // update the current value in your application.. bar1.update(100); // stop the progress bar bar1.stop(); ``` Single Bar Mode ----------------------------------- ![Demo](assets/presets.png) ### Example ### ```js const cliProgress = require('cli-progress'); // note: you have to install this dependency manually since it's not required by cli-progress const colors = require('ansi-colors'); // create new progress bar const b1 = new cliProgress.SingleBar({ format: 'CLI Progress |' + colors.cyan('{bar}') + '| {percentage}% || {value}/{total} Chunks || Speed: {speed}', barCompleteChar: '\u2588', barIncompleteChar: '\u2591', hideCursor: true }); // initialize the bar - defining payload token "speed" with the default value "N/A" b1.start(200, 0, { speed: "N/A" }); // update values b1.increment(); b1.update(20); // stop the bar b1.stop(); ``` ### Constructor ### Initialize a new Progress bar. An instance can be used **multiple** times! it's not required to re-create it! ```js const cliProgress = require('cli-progress'); const = new cliProgress.SingleBar(options:object [, preset:object]); ``` #### Options #### ### ::start() ### Starts the progress bar and set the total and initial value ```js .start(totalValue:int, startValue:int [, payload:object = {}]); ``` ### ::update() ### Sets the current progress value and optionally the payload with values of custom tokens as a second parameter. To update payload only, set currentValue to `null`. ```js .update([currentValue:int [, payload:object = {}]]); // update progress without altering value .update([payload:object = {}]); ``` ### ::increment() ### Increases the current progress value by a specified amount (default +1). Update payload optionally ```js .increment([delta:int [, payload:object = {}]]); // delta=1 assumed .increment(payload:object = {}]); ``` ### ::setTotal() ### Sets the total progress value while progressbar is active. Especially useful handling dynamic tasks. ```js .setTotal(totalValue:int); ``` ### ::stop() ### Stops the progress bar and go to next line ```js .stop(); ``` ### ::updateETA() ### Force eta calculation update (long running processes) without altering the progress values. Note: you may want to increase `etaBuffer` size - otherwise it can cause `INF` eta values in case the value didn't changed within the time series. ```js .updateETA(); ``` Multi Bar Mode ----------------------------------- ![Demo](assets/multibar.png) ### Example ### ```js const cliProgress = require('cli-progress'); // create new container const multibar = new cliProgress.MultiBar({ clearOnComplete: false, hideCursor: true, format: ' {bar} | {filename} | {value}/{total}', }, cliProgress.Presets.shades_grey); // add bars const b1 = multibar.create(200, 0); const b2 = multibar.create(1000, 0); // control bars b1.increment(); b2.update(20, {filename: "test1.txt"}); b1.update(20, {filename: "helloworld.txt"}); // stop all bars multibar.stop(); ``` ### Constructor ### Initialize a new multiprogress container. Bars need to be added. The options/presets are used for each single bar! ```js const cliProgress = require('cli-progress'); const = new cliProgress.MultiBar(options:object [, preset:object]); ``` ### ::create() ### Adds a new progress bar to the container and starts the bar. Returns regular `SingleBar` object which can be individually controlled. Additional `barOptions` can be passed directly to the [generic-bar](lib/generic-bar.js) to override the global options for a single bar instance. This can be useful to change the appearance of a single bar object. But be patient: this should only be used to override formats - DON'T try to set other global options like the terminal, synchronous flags, etc.. ```js const = .create(totalValue:int, startValue:int [, payload:object = {} [, barOptions:object = {}]]); ``` ### ::remove() ### Removes an existing bar from the multi progress container. ```js .remove(:object); ``` ### ::stop() ### Stops the all progress bars ```js .stop(); ``` ### ::log() ### Outputs (buffered) content on top of the multibars during operation. **Notice: newline at the end is required** Example: [example-logging.js](examples/example-logging.js) ```js .log("Hello World\n"); ``` Options ----------------------------------- The following options can be changed - `format` (type:string|function) - progress bar output format @see format section - `fps` (type:float) - the maximum update rate (default: 10) - `stream` (type:stream) - output stream to use (default: `process.stderr`) - `stopOnComplete` (type:boolean) - automatically call `stop()` when the value reaches the total (default: false) - `clearOnComplete` (type:boolean) - clear the progress bar on complete / `stop()` call (default: false) - `barsize` (type:int) - the length of the progress bar in chars (default: 40) - `align` (type:char) - position of the progress bar - 'left' (default), 'right' or 'center' - `barCompleteChar` (type:char) - character to use as "complete" indicator in the bar (default: "=") - `barIncompleteChar` (type:char) - character to use as "incomplete" indicator in the bar (default: "-") - `hideCursor` (type:boolean) - hide the cursor during progress operation; restored on complete (default: false) - pass `null` to keep terminal settings - `linewrap` (type:boolean) - disable line wrapping (default: false) - pass `null` to keep terminal settings; pass `true` to add linebreaks automatically (not recommended) - `gracefulExit` (type:boolean) - stop the bars in case of `SIGINT` or `SIGTERM` - this restores most cursor settings before exiting (default: `true`) - `etaBuffer` (type:int) - number of updates with which to calculate the eta; higher numbers give a more stable eta (default: 10) - `etaAsynchronousUpdate` (type:boolean) - trigger an eta calculation update during asynchronous rendering trigger using the current value - should only be used for long running processes in conjunction with lof `fps` values and large `etaBuffer` (default: false) - `progressCalculationRelative` (type:boolean) - progress calculation uses `startValue` as zero-offset (default: false) - `synchronousUpdate` (type:boolean) - trigger redraw during `update()` in case threshold time x2 is exceeded (default: true) - limited to single bar usage - `noTTYOutput` (type:boolean) - enable scheduled output to notty streams - e.g. redirect to files (default: false) - `notTTYSchedule` (type:int) - set the output schedule/interval for notty output in `ms` (default: 2000ms) - `emptyOnZero` (type:boolean) - display progress bars with 'total' of zero(0) as empty, not full (default: false) - `forceRedraw` (type:boolean) - trigger redraw on every frame even if progress remains the same; can be useful if progress bar gets overwritten by other concurrent writes to the terminal (default: false) - `barGlue` (type:string) - a "glue" string between the complete and incomplete bar elements used to insert ascii control sequences for colorization (default: empty) - Note: in case you add visible "glue" characters the barsize will be increased by the length of the glue! - `autopadding` (type: boolean) - add padding chars to formatted time and percentage to force fixed width (default: false) - Note: handled standard format functions! - `autopaddingChar` (type: string) - the character sequence used for autopadding (default: " ") - Note: due to performance optimizations this value requires a length of 3 identical chars - `formatBar` (type: function) - a custom bar formatter function which renders the bar-element (default: [format-bar.js](lib/format-bar.js)) - `formatTime` (type: function) - a custom timer formatter function which renders the formatted time elements like `eta_formatted` and `duration-formatted` (default: [format-time.js](lib/format-time.js)) - `formatValue` (type: function) - a custom value formatter function which renders all other values (default: [format-value.js](lib/format-value.js)) Events ----------------------------------- The classes extends [EventEmitter](https://nodejs.org/api/events.html) which allows you to hook into different events. See [event docs](docs/events.md) for detailed information + examples. Bar Formatting ----------------------------------- The progressbar can be customized by using the following build-in placeholders. They can be combined in any order. - `{bar}` - the progress bar, customizable by the options **barsize**, **barCompleteString** and **barIncompleteString** - `{percentage}` - the current progress in percent (0-100) - `{total}` - the end value - `{value}` - the current value set by last `update()` call - `{eta}` - expected time of accomplishment in seconds (limmited to 115days, otherwise INF is displayed) - `{duration}` - elapsed time in seconds - `{eta_formatted}` - expected time of accomplishment formatted into appropriate units - `{duration_formatted}` - elapsed time formatted into appropriate units - `{}` - the payload value identified by its key ### Example ### ```js const opt = { format: 'progress [{bar}] {percentage}% | ETA: {eta}s | {value}/{total}' } ``` is rendered as ``` progress [========================================] 100% | ETA: 0s | 200/200 ``` Custom formatters ----------------------------------- Instead of a "static" format string it is also possible to pass a custom callback function as formatter. For a full example (including params) take a look on `lib/formatter.js` ### Example 1 ### ```js function formatter(options, params, payload){ // bar grows dynamically by current progress - no whitespaces are added const bar = options.barCompleteString.substr(0, Math.round(params.progress*options.barsize)); // end value reached ? // change color to green when finished if (params.value >= params.total){ return '# ' + colors.grey(payload.task) + ' ' + colors.green(params.value + '/' + params.total) + ' --[' + bar + ']-- '; }else{ return '# ' + payload.task + ' ' + colors.yellow(params.value + '/' + params.total) + ' --[' + bar + ']-- '; } } const opt = { format: formatter } ``` is rendered as ``` # Task 1 0/200 --[]-- # Task 1 98/200 --[████████████████████]-- # Task 1 200/200 --[████████████████████████████████████████]-- ``` ### Example 2 ### You can also access the default format functions to use them within your formatter: ```js const {TimeFormat, ValueFormat, BarFormat, Formatter} = require('cli-progess').Format; ... ``` Examples --------------------------------------------- ### Example 1 - Set Options ### ```js // change the progress characters // set fps limit to 5 // change the output stream and barsize const bar = new _progress.Bar({ barCompleteChar: '#', barIncompleteChar: '.', fps: 5, stream: process.stdout, barsize: 65, position: 'center' }); ``` ### Example 2 - Change Styles defined by Preset ### ```js // uee shades preset // change the barsize const bar = new _progress.Bar({ barsize: 65, position: 'right' }, _progress.Presets.shades_grey); ``` ### Example 3 - Custom Payload ### The payload object keys should only contain keys matching standard `\w+` regex! ```js // create new progress bar with custom token "speed" const bar = new _progress.Bar({ format: 'progress [{bar}] {percentage}% | ETA: {eta}s | {value}/{total} | Speed: {speed} kbit' }); // initialize the bar - set payload token "speed" with the default value "N/A" bar.start(200, 0, { speed: "N/A" }); // some code/update loop // ... // update bar value. set custom token "speed" to 125 bar.update(5, { speed: '125' }); // process finished bar.stop(); ``` ### Example 4 - Custom Presets ### **File** `myPreset.js` ```js const colors = require('ansi-colors'); module.exports = { format: colors.red(' {bar}') + ' {percentage}% | ETA: {eta}s | {value}/{total} | Speed: {speed} kbit', barCompleteChar: '\u2588', barIncompleteChar: '\u2591' }; ``` **Application** ```js const myPreset = require('./myPreset.js'); const bar = new _progress.Bar({ barsize: 65 }, myPreset); ``` Presets/Themes --------------------------------------------- Need a more modern appearance ? **cli-progress** supports predefined themes via presets. You are welcome to add your custom one :) But keep in mind that a lot of the "special-chars" rely on Unicode - it might not work as expected on legacy systems. ### Default Presets ### The following presets are included by default * **legacy** - Styles as of cli-progress v1.3.0 * **shades-classic** - Unicode background shades are used for the bar * **shades-grey** - Unicode background shades with grey bar * **rect** - Unicode Rectangles Compatibility --------------------------------------------- **cli-progress** is designed for linux/macOS/container applications which mostly providing standard compliant tty terminals/shells. In non-tty mode it is suitable to be used with logging daemons (cyclic output). It also works with PowerShell on Windows 10 - the legacy command prompt on outdated Windows versions won't work as expected and is not supported! Any Questions ? Report a Bug ? Enhancements ? --------------------------------------------- Please open a new issue on [GitHub](https://github.com/npkgz/cli-progress/issues) License ------- CLI-Progress is OpenSource and licensed under the Terms of [The MIT License (X11)](http://opensource.org/licenses/MIT). You're welcome to [contribute](https://github.com/npkgz/cli-progress/blob/master/CONTRIBUTE.md)!

	Stars	Issues	Version	Updated	Created
cli-progress	1,046	19	3.12.0	a year ago	8 years ago
express	63,820	195	4.19.2	a month ago	13 years ago
fs	150	4	0.0.1-security	8 years ago	10 years ago
fstream	206	33	1.0.12	5 years ago	13 years ago
progress	2,946	72	2.0.3	5 years ago	13 years ago

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