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on this file since 6a3a178 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 | /**
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| 7 | * Pads `string` on the left side if it's shorter than `length`. Padding
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| 8 | * characters are truncated if they exceed `length`.
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| 9 | *
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| 10 | * @static
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| 11 | * @memberOf _
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| 12 | * @since 4.0.0
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| 13 | * @category String
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| 14 | * @param {string} [string=''] The string to pad.
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| 15 | * @param {number} [length=0] The padding length.
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| 16 | * @param {string} [chars=' '] The string used as padding.
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| 17 | * @returns {string} Returns the padded string.
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| 18 | * @example
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| 19 | *
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| 20 | * _.padStart('abc', 6);
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| 21 | * // => ' abc'
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| 22 | *
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| 23 | * _.padStart('abc', 6, '_-');
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| 24 | * // => '_-_abc'
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| 25 | *
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| 26 | * _.padStart('abc', 3);
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| 27 | * // => 'abc'
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| 28 | */
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| 29 | function padStart(string, length, chars) {
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| 30 | string = toString(string);
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| 31 | length = toInteger(length);
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| 32 |
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| 33 | var strLength = length ? stringSize(string) : 0;
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| 34 | return (length && strLength < length)
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| 35 | ? (createPadding(length - strLength, chars) + string)
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| 36 | : string;
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| 37 | }
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| 38 |
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| 39 | module.exports = padStart;
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