Right Pad

Right pad a string.

Installation

$ npm install utils-right-pad-string

Usage

var rpad = require( 'utils-right-pad-string' );

rpad( str, len[, pad] )

Right pads a string such that the padded string has a length of at least len.

var str = rpad( 'a', 5 );
// returns 'a    '

By default, an input string is padded with spaces. To pad with a different character or sequence of characters, provide a pad string.

var str = rpad( 'beep', 10, 'p' );
// returns 'beeppppppp'

str = rpad( 'beep', 12, 'boop' );
// returns 'beepboopboop'

Notes

• An output string is not guaranteed to have a length of exactly len, but to have a length of at least len. To generate a padded string having a length equal to len

  var str = rpad( 'beep', 10, 'boop' );
  // returns 'beepboopboop' => length 12
  
  str = str.substring( 0, 10 );
  // returns 'beepboopbo' => length 10
  

Examples

var round = require( 'math-round' );
var rpad = require( 'utils-right-pad-string' );

var str = 'beep';
var n;
var i;

for ( i = 0; i < 100; i++ ) {
    n = round( Math.random()*10 ) + str.length;
    console.log( rpad( str, n, 'p' ) );
}

To run the example code from the top-level application directory,

$ node ./examples/index.js

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CLI

Installation

To use the module as a general utility, install the module globally

$ npm install -g utils-right-pad-string

Usage

Usage: rpad [options] str --len length

Options:

  -h,    --help                Print this message.
  -V,    --version             Print the package version.
         --len length          Minimum string length.
         --pad str             String used to pad. Default: ' '.

Examples

$ rpad beep --len 10 --pad p
# => beeppppppp

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Tests

Unit

This repository uses tape for unit tests. To run the tests, execute the following command in the top-level application directory:

$ make test

All new feature development should have corresponding unit tests to validate correct functionality.

Test Coverage

This repository uses Istanbul as its code coverage tool. To generate a test coverage report, execute the following command in the top-level application directory:

$ make test-cov

Istanbul creates a ./reports/coverage directory. To access an HTML version of the report,

$ make view-cov

Browser Support

This repository uses Testling for browser testing. To run the tests in a (headless) local web browser, execute the following command in the top-level application directory:

$ make test-browsers

To view the tests in a local web browser,

$ make view-browser-tests

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License

MIT license.

Copyright

Copyright © 2016. Athan Reines.