Last change
on this file since 571e0df was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago |
initial commit
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File size:
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1 | 'use strict'
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2 | var stringWidth = require('string-width')
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3 | var stripAnsi = require('strip-ansi')
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4 |
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5 | module.exports = wideTruncate
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6 |
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7 | function wideTruncate (str, target) {
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8 | if (stringWidth(str) === 0) return str
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9 | if (target <= 0) return ''
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10 | if (stringWidth(str) <= target) return str
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11 |
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12 | // We compute the number of bytes of ansi sequences here and add
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13 | // that to our initial truncation to ensure that we don't slice one
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14 | // that we want to keep in half.
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15 | var noAnsi = stripAnsi(str)
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16 | var ansiSize = str.length + noAnsi.length
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17 | var truncated = str.slice(0, target + ansiSize)
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18 |
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19 | // we have to shrink the result to account for our ansi sequence buffer
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20 | // (if an ansi sequence was truncated) and double width characters.
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21 | while (stringWidth(truncated) > target) {
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22 | truncated = truncated.slice(0, -1)
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23 | }
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24 | return truncated
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25 | }
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