65 lines
2.9 KiB
JavaScript
65 lines
2.9 KiB
JavaScript
|
"use strict";
|
||
|
|
const getCodePoint = (character) => character.codePointAt(0);
|
||
|
|
const first = (x) => x[0];
|
||
|
|
const last = (x) => x[x.length - 1];
|
||
|
|
function toCodePoints(input) {
|
||
|
|
const codepoints = [];
|
||
|
|
const size = input.length;
|
||
|
|
for (let i = 0; i < size; i += 1) {
|
||
|
|
const before = input.charCodeAt(i);
|
||
|
|
if (before >= 0xd800 && before <= 0xdbff && size > i + 1) {
|
||
|
|
const next = input.charCodeAt(i + 1);
|
||
|
|
if (next >= 0xdc00 && next <= 0xdfff) {
|
||
|
|
codepoints.push((before - 0xd800) * 0x400 + next - 0xdc00 + 0x10000);
|
||
|
|
i += 1;
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
codepoints.push(before);
|
||
|
|
}
|
||
|
|
return codepoints;
|
||
|
|
}
|
||
|
|
function saslprep({ unassigned_code_points, commonly_mapped_to_nothing, non_ASCII_space_characters, prohibited_characters, bidirectional_r_al, bidirectional_l, }, input, opts = {}) {
|
||
|
|
const mapping2space = non_ASCII_space_characters;
|
||
|
|
const mapping2nothing = commonly_mapped_to_nothing;
|
||
|
|
if (typeof input !== 'string') {
|
||
|
|
throw new TypeError('Expected string.');
|
||
|
|
}
|
||
|
|
if (input.length === 0) {
|
||
|
|
return '';
|
||
|
|
}
|
||
|
|
const mapped_input = toCodePoints(input)
|
||
|
|
.map((character) => (mapping2space.get(character) ? 0x20 : character))
|
||
|
|
.filter((character) => !mapping2nothing.get(character));
|
||
|
|
const normalized_input = String.fromCodePoint
|
||
|
|
.apply(null, mapped_input)
|
||
|
|
.normalize('NFKC');
|
||
|
|
const normalized_map = toCodePoints(normalized_input);
|
||
|
|
const hasProhibited = normalized_map.some((character) => prohibited_characters.get(character));
|
||
|
|
if (hasProhibited) {
|
||
|
|
throw new Error('Prohibited character, see https://tools.ietf.org/html/rfc4013#section-2.3');
|
||
|
|
}
|
||
|
|
if (opts.allowUnassigned !== true) {
|
||
|
|
const hasUnassigned = normalized_map.some((character) => unassigned_code_points.get(character));
|
||
|
|
if (hasUnassigned) {
|
||
|
|
throw new Error('Unassigned code point, see https://tools.ietf.org/html/rfc4013#section-2.5');
|
||
|
|
}
|
||
|
|
}
|
||
|
|
const hasBidiRAL = normalized_map.some((character) => bidirectional_r_al.get(character));
|
||
|
|
const hasBidiL = normalized_map.some((character) => bidirectional_l.get(character));
|
||
|
|
if (hasBidiRAL && hasBidiL) {
|
||
|
|
throw new Error('String must not contain RandALCat and LCat at the same time,' +
|
||
|
|
' see https://tools.ietf.org/html/rfc3454#section-6');
|
||
|
|
}
|
||
|
|
const isFirstBidiRAL = bidirectional_r_al.get(getCodePoint(first(normalized_input)));
|
||
|
|
const isLastBidiRAL = bidirectional_r_al.get(getCodePoint(last(normalized_input)));
|
||
|
|
if (hasBidiRAL && !(isFirstBidiRAL && isLastBidiRAL)) {
|
||
|
|
throw new Error('Bidirectional RandALCat character must be the first and the last' +
|
||
|
|
' character of the string, see https://tools.ietf.org/html/rfc3454#section-6');
|
||
|
|
}
|
||
|
|
return normalized_input;
|
||
|
|
}
|
||
|
|
saslprep.saslprep = saslprep;
|
||
|
|
saslprep.default = saslprep;
|
||
|
|
module.exports = saslprep;
|
||
|
|
//# sourceMappingURL=index.js.map
|