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1
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"use strict"; |
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2
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3
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const ansiEscapeCode = '[\u001b\u009b][[()#;?]*(?:[0-9]{1,4}(?:;[0-9]{0,4})*)?[0-9A-PRZcf-nqry=><]' |
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4
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, zeroWidthCharacterExceptNewline = '\u0000-\u0008\u000B-\u0019\u001b\u009b\u00ad\u200b\u2028\u2029\ufeff' |
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5
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, zeroWidthCharacter = '\n' + zeroWidthCharacterExceptNewline |
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6
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, zeroWidthCharactersExceptNewline = new RegExp ('(?:' + ansiEscapeCode + ')|[' + zeroWidthCharacterExceptNewline + ']', 'g') |
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7
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, zeroWidthCharacters = new RegExp ('(?:' + ansiEscapeCode + ')|[' + zeroWidthCharacter + ']', 'g') |
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8
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, partition = new RegExp ('((?:' + ansiEscapeCode + ')|[\t' + zeroWidthCharacter + '])?([^\t' + zeroWidthCharacter + ']*)', 'g') |
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9
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10
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module.exports = { |
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11
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12
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zeroWidthCharacters, |
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13
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14
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ansiEscapeCodes: new RegExp (ansiEscapeCode, 'g'), |
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15
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16
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strlen: s => s.replace (zeroWidthCharacters, '') |
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17
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.length, |
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18
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19
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isBlank: s => s.replace (zeroWidthCharacters, '') |
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.replace (/\s/g, '') |
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.length === 0, |
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23
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blank: s => s.replace (zeroWidthCharactersExceptNewline, '') |
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24
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.replace (/[^\t\n]/g, ' '), |
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25
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26
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partition (s) { |
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27
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for (var m, spans = []; (partition.lastIndex !== s.length) && (m = partition.exec (s));) { spans.push ([m[1] || '', m[2]]) } |
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partition.lastIndex = 0 // reset |
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return spans |
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}, |
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31
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32
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first (s, n) { |
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33
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34
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let result = '', length = 0 |
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35
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36
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for (const [nonPrintable, printable] of module.exports.partition (s)) { |
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37
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const text = printable.substr (0, n - length) |
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38
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result += nonPrintable + text |
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length += text.length |
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40
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} |
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41
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42
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return result |
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43
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} |
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} |
xpl /
printable-characters
