Last change
on this file since 84d0fbb was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago |
initial commit
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File size:
828 bytes
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[6a3a178] | 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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