Last change
on this file since 76712b2 was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago |
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[6a3a178] | 1 | var createPadding = require('./_createPadding'),
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| 2 | stringSize = require('./_stringSize'),
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| 3 | toInteger = require('./toInteger'),
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| 4 | toString = require('./toString');
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| 5 |
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| 6 | /* Built-in method references for those with the same name as other `lodash` methods. */
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| 7 | var nativeCeil = Math.ceil,
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| 8 | nativeFloor = Math.floor;
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| 9 |
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| 10 | /**
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| 11 | * Pads `string` on the left and right sides if it's shorter than `length`.
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| 12 | * Padding characters are truncated if they can't be evenly divided by `length`.
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| 13 | *
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| 14 | * @static
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| 15 | * @memberOf _
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| 16 | * @since 3.0.0
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| 17 | * @category String
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| 18 | * @param {string} [string=''] The string to pad.
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| 19 | * @param {number} [length=0] The padding length.
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| 20 | * @param {string} [chars=' '] The string used as padding.
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| 21 | * @returns {string} Returns the padded string.
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| 22 | * @example
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| 23 | *
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| 24 | * _.pad('abc', 8);
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| 25 | * // => ' abc '
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| 26 | *
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| 27 | * _.pad('abc', 8, '_-');
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| 28 | * // => '_-abc_-_'
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| 29 | *
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| 30 | * _.pad('abc', 3);
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| 31 | * // => 'abc'
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| 32 | */
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| 33 | function pad(string, length, chars) {
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| 34 | string = toString(string);
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| 35 | length = toInteger(length);
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| 36 |
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| 37 | var strLength = length ? stringSize(string) : 0;
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| 38 | if (!length || strLength >= length) {
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| 39 | return string;
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| 40 | }
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| 41 | var mid = (length - strLength) / 2;
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| 42 | return (
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| 43 | createPadding(nativeFloor(mid), chars) +
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| 44 | string +
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| 45 | createPadding(nativeCeil(mid), chars)
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| 46 | );
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| 47 | }
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| 48 |
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| 49 | module.exports = pad;
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