mirror of
https://github.com/denoland/deno.git
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264 lines
6.6 KiB
JavaScript
264 lines
6.6 KiB
JavaScript
// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
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// @ts-check
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/// <reference path="../../core/internal.d.ts" />
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/// <reference path="../../core/lib.deno_core.d.ts" />
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/// <reference path="../web/internal.d.ts" />
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/// <reference path="../web/lib.deno_web.d.ts" />
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"use strict";
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((window) => {
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const core = Deno.core;
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const {
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RegExp,
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ArrayPrototypeMap,
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StringPrototypeCharCodeAt,
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NumberPrototypeToString,
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StringPrototypePadStart,
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TypeError,
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ArrayPrototypeJoin,
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StringPrototypeCharAt,
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StringPrototypeSlice,
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String,
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StringPrototypeReplace,
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StringPrototypeToUpperCase,
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StringPrototypeToLowerCase,
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StringPrototypeSubstring,
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} = window.__bootstrap.primordials;
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const ASCII_DIGIT = ["\u0030-\u0039"];
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const ASCII_UPPER_ALPHA = ["\u0041-\u005A"];
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const ASCII_LOWER_ALPHA = ["\u0061-\u007A"];
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const ASCII_ALPHA = [...ASCII_UPPER_ALPHA, ...ASCII_LOWER_ALPHA];
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const ASCII_ALPHANUMERIC = [...ASCII_DIGIT, ...ASCII_ALPHA];
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const HTTP_TAB_OR_SPACE = ["\u0009", "\u0020"];
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const HTTP_WHITESPACE = ["\u000A", "\u000D", ...HTTP_TAB_OR_SPACE];
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const HTTP_TOKEN_CODE_POINT = [
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"\u0021",
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"\u0023",
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"\u0024",
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"\u0025",
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"\u0026",
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"\u0027",
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"\u002A",
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"\u002B",
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"\u002D",
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"\u002E",
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"\u005E",
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"\u005F",
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"\u0060",
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"\u007C",
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"\u007E",
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...ASCII_ALPHANUMERIC,
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];
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const HTTP_TOKEN_CODE_POINT_RE = new RegExp(
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`^[${regexMatcher(HTTP_TOKEN_CODE_POINT)}]+$`,
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);
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const HTTP_QUOTED_STRING_TOKEN_POINT = [
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"\u0009",
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"\u0020-\u007E",
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"\u0080-\u00FF",
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];
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const HTTP_QUOTED_STRING_TOKEN_POINT_RE = new RegExp(
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`^[${regexMatcher(HTTP_QUOTED_STRING_TOKEN_POINT)}]+$`,
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);
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const HTTP_TAB_OR_SPACE_MATCHER = regexMatcher(HTTP_TAB_OR_SPACE);
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const HTTP_TAB_OR_SPACE_PREFIX_RE = new RegExp(
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`^[${HTTP_TAB_OR_SPACE_MATCHER}]+`,
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"g",
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);
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const HTTP_TAB_OR_SPACE_SUFFIX_RE = new RegExp(
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`[${HTTP_TAB_OR_SPACE_MATCHER}]+$`,
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"g",
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);
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const HTTP_WHITESPACE_MATCHER = regexMatcher(HTTP_WHITESPACE);
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const HTTP_WHITESPACE_PREFIX_RE = new RegExp(
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`^[${HTTP_WHITESPACE_MATCHER}]+`,
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"g",
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);
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const HTTP_WHITESPACE_SUFFIX_RE = new RegExp(
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`[${HTTP_WHITESPACE_MATCHER}]+$`,
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"g",
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);
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/**
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* Turn a string of chars into a regex safe matcher.
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* @param {string[]} chars
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* @returns {string}
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*/
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function regexMatcher(chars) {
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const matchers = ArrayPrototypeMap(chars, (char) => {
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if (char.length === 1) {
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const a = StringPrototypePadStart(
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NumberPrototypeToString(StringPrototypeCharCodeAt(char, 0), 16),
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4,
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"0",
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);
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return `\\u${a}`;
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} else if (char.length === 3 && char[1] === "-") {
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const a = StringPrototypePadStart(
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NumberPrototypeToString(StringPrototypeCharCodeAt(char, 0), 16),
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4,
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"0",
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);
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const b = StringPrototypePadStart(
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NumberPrototypeToString(StringPrototypeCharCodeAt(char, 2), 16),
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4,
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"0",
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);
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return `\\u${a}-\\u${b}`;
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} else {
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throw TypeError("unreachable");
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}
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});
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return ArrayPrototypeJoin(matchers, "");
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}
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/**
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* https://infra.spec.whatwg.org/#collect-a-sequence-of-code-points
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* @param {string} input
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* @param {number} position
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* @param {(char: string) => boolean} condition
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* @returns {{result: string, position: number}}
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*/
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function collectSequenceOfCodepoints(input, position, condition) {
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const start = position;
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for (
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let c = StringPrototypeCharAt(input, position);
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position < input.length && condition(c);
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c = StringPrototypeCharAt(input, ++position)
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);
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return { result: StringPrototypeSlice(input, start, position), position };
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}
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/**
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* @param {string} s
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* @returns {string}
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*/
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function byteUpperCase(s) {
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return StringPrototypeReplace(
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String(s),
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/[a-z]/g,
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function byteUpperCaseReplace(c) {
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return StringPrototypeToUpperCase(c);
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},
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);
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}
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/**
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* @param {string} s
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* @returns {string}
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*/
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function byteLowerCase(s) {
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return StringPrototypeReplace(
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String(s),
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/[A-Z]/g,
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function byteUpperCaseReplace(c) {
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return StringPrototypeToLowerCase(c);
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},
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);
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}
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/**
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* https://fetch.spec.whatwg.org/#collect-an-http-quoted-string
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* @param {string} input
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* @param {number} position
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* @param {boolean} extractValue
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* @returns {{result: string, position: number}}
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*/
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function collectHttpQuotedString(input, position, extractValue) {
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// 1.
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const positionStart = position;
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// 2.
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let value = "";
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// 3.
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if (input[position] !== "\u0022") throw new TypeError('must be "');
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// 4.
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position++;
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// 5.
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while (true) {
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// 5.1.
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const res = collectSequenceOfCodepoints(
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input,
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position,
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(c) => c !== "\u0022" && c !== "\u005C",
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);
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value += res.result;
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position = res.position;
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// 5.2.
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if (position >= input.length) break;
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// 5.3.
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const quoteOrBackslash = input[position];
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// 5.4.
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position++;
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// 5.5.
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if (quoteOrBackslash === "\u005C") {
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// 5.5.1.
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if (position >= input.length) {
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value += "\u005C";
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break;
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}
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// 5.5.2.
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value += input[position];
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// 5.5.3.
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position++;
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} else { // 5.6.
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// 5.6.1
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if (quoteOrBackslash !== "\u0022") throw new TypeError('must be "');
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// 5.6.2
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break;
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}
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}
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// 6.
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if (extractValue) return { result: value, position };
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// 7.
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return {
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result: StringPrototypeSubstring(input, positionStart, position + 1),
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position,
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};
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}
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/**
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* @param {Uint8Array} data
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* @returns {string}
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*/
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function forgivingBase64Encode(data) {
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return core.opSync("op_base64_encode", data);
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}
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/**
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* @param {string} data
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* @returns {Uint8Array}
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*/
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function forgivingBase64Decode(data) {
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return core.opSync("op_base64_decode", data);
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}
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window.__bootstrap.infra = {
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collectSequenceOfCodepoints,
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ASCII_DIGIT,
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ASCII_UPPER_ALPHA,
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ASCII_LOWER_ALPHA,
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ASCII_ALPHA,
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ASCII_ALPHANUMERIC,
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HTTP_TAB_OR_SPACE,
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HTTP_WHITESPACE,
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HTTP_TOKEN_CODE_POINT,
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HTTP_TOKEN_CODE_POINT_RE,
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HTTP_QUOTED_STRING_TOKEN_POINT,
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HTTP_QUOTED_STRING_TOKEN_POINT_RE,
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HTTP_TAB_OR_SPACE_PREFIX_RE,
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HTTP_TAB_OR_SPACE_SUFFIX_RE,
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HTTP_WHITESPACE_PREFIX_RE,
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HTTP_WHITESPACE_SUFFIX_RE,
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regexMatcher,
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byteUpperCase,
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byteLowerCase,
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collectHttpQuotedString,
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forgivingBase64Encode,
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forgivingBase64Decode,
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};
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})(globalThis);
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