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@pushrocks/smartstring

Version:

handle strings in smart ways. TypeScript ready.

gitlab.com/pushrocks/smartstring

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import * as plugins from './smartstring.plugins.js'; import * as base64 from './smartstring.base64.js'; export const isUtf8 = (stringArg) => { const bytes = Buffer.from(stringArg); let i = 0; while (i < bytes.length) { if ( // ASCII bytes[i] === 0x09 || bytes[i] === 0x0a || bytes[i] === 0x0d || (0x20 <= bytes[i] && bytes[i] <= 0x7e)) { i += 1; continue; } if ( // non-overlong 2-byte 0xc2 <= bytes[i] && bytes[i] <= 0xdf && 0x80 <= bytes[i + 1] && bytes[i + 1] <= 0xbf) { i += 2; continue; } if ( // excluding overlongs (bytes[i] === 0xe0 && 0xa0 <= bytes[i + 1] && bytes[i + 1] <= 0xbf && 0x80 <= bytes[i + 2] && bytes[i + 2] <= 0xbf) || // straight 3-byte (((0xe1 <= bytes[i] && bytes[i] <= 0xec) || bytes[i] === 0xee || bytes[i] === 0xef) && 0x80 <= bytes[i + 1] && bytes[i + 1] <= 0xbf && 0x80 <= bytes[i + 2] && bytes[i + 2] <= 0xbf) || // excluding surrogates (bytes[i] === 0xed && 0x80 <= bytes[i + 1] && bytes[i + 1] <= 0x9f && 0x80 <= bytes[i + 2] && bytes[i + 2] <= 0xbf)) { i += 3; continue; } if ( // planes 1-3 (bytes[i] === 0xf0 && 0x90 <= bytes[i + 1] && bytes[i + 1] <= 0xbf && 0x80 <= bytes[i + 2] && bytes[i + 2] <= 0xbf && 0x80 <= bytes[i + 3] && bytes[i + 3] <= 0xbf) || // planes 4-15 (0xf1 <= bytes[i] && bytes[i] <= 0xf3 && 0x80 <= bytes[i + 1] && bytes[i + 1] <= 0xbf && 0x80 <= bytes[i + 2] && bytes[i + 2] <= 0xbf && 0x80 <= bytes[i + 3] && bytes[i + 3] <= 0xbf) || // plane 16 (bytes[i] === 0xf4 && 0x80 <= bytes[i + 1] && bytes[i + 1] <= 0x8f && 0x80 <= bytes[i + 2] && bytes[i + 2] <= 0xbf && 0x80 <= bytes[i + 3] && bytes[i + 3] <= 0xbf)) { i += 4; continue; } return false; } return true; }; export const isBase64 = (stringArg) => { const notBase64 = /[^A-Z0-9+\/=]/i; const len = stringArg.length; if (!len || len % 4 !== 0 || notBase64.test(stringArg)) { return false; } const firstPaddingChar = stringArg.indexOf('='); return (firstPaddingChar === -1 || firstPaddingChar === len - 1 || (firstPaddingChar === len - 2 && stringArg[len - 1] === '=')); }; //# sourceMappingURL=data:application/json;base64,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