sgauthier
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33 lines
852 B
JavaScript
33 lines
852 B
JavaScript
'use strict'
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var codes = require('../character/codes.js')
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var values = require('../character/values.js')
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var fromCharCode = require('../constant/from-char-code.js')
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function safeFromInt(value, base) {
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var code = parseInt(value, base)
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if (
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// C0 except for HT, LF, FF, CR, space
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code < codes.ht ||
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code === codes.vt ||
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(code > codes.cr && code < codes.space) ||
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// Control character (DEL) of the basic block and C1 controls.
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(code > codes.tilde && code < 160) ||
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// Lone high surrogates and low surrogates.
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(code > 55295 && code < 57344) ||
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// Noncharacters.
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(code > 64975 && code < 65008) ||
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(code & 65535) === 65535 ||
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(code & 65535) === 65534 ||
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// Out of range
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code > 1114111
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) {
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return values.replacementCharacter
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}
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return fromCharCode(code)
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}
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module.exports = safeFromInt
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