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'use strict';
const jsesc = require('jsesc');
const regenerate = require('regenerate');
const difference = require('lodash').difference;
const joinStrings = function(a, b) {
if (a && b) {
return a + '|' + b;
}
return a + b;
};
const loneCodePoints = require('../data/encode-lone-code-points.json');
const arrayEncodeMultipleSymbols = require('../data/encode-paired-symbols.json');
const arrayEncodeMultipleSymbolsAscii = arrayEncodeMultipleSymbols
.filter(function(string) {
return /^[\0-\x7F]+$/.test(string);
});
const encodeSingleSymbolsAscii = regenerate(loneCodePoints)
.removeRange(0x7F + 1, 0x10FFFF).toString();
const encodeSingleSymbolsNonAscii = regenerate(loneCodePoints)
.removeRange(0x00, 0x7F).toString();
const encodeMultipleSymbolsAscii = jsesc(
arrayEncodeMultipleSymbolsAscii.join('|')
);
const encodeMultipleSymbolsNonAscii = jsesc(
difference(
arrayEncodeMultipleSymbols,
arrayEncodeMultipleSymbolsAscii
).join('|')
);
const regexEncodeAscii = joinStrings(
encodeMultipleSymbolsAscii,
encodeSingleSymbolsAscii
);
const regexEncodeNonAscii = joinStrings(
encodeMultipleSymbolsNonAscii,
encodeSingleSymbolsNonAscii
);
// Note: `regexEncodeAscii` is not used.
module.exports = regexEncodeNonAscii;
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