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denoland-deno/ext/node/polyfills/internal/querystring.ts
Bartek Iwańczuk 72fe9bb470
refactor: rename InternalModuleLoader to ExtModuleLoader, use ext: scheme for snapshotted modules (#18041)
This commit renames "deno_core::InternalModuleLoader" to
"ExtModuleLoader" and changes the specifiers used by the 
modules loaded from this loader to "ext:".

"internal:" scheme was really ambiguous and it's more characters than
"ext:", which should result in slightly smaller snapshot size.

Closes https://github.com/denoland/deno/issues/18020
2023-03-08 12:44:54 +01:00

92 lines
2.8 KiB
TypeScript

// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
import { ERR_INVALID_URI } from "ext:deno_node/internal/errors.ts";
export const hexTable = new Array(256);
for (let i = 0; i < 256; ++i) {
hexTable[i] = "%" + ((i < 16 ? "0" : "") + i.toString(16)).toUpperCase();
}
// deno-fmt-ignore
export const isHexTable = new Int8Array([
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 0 - 15
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 16 - 31
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 32 - 47
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, // 48 - 63
0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 64 - 79
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 80 - 95
0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 96 - 111
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 112 - 127
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 128 ...
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // ... 256
]);
export function encodeStr(
str: string,
noEscapeTable: Int8Array,
hexTable: string[],
): string {
const len = str.length;
if (len === 0) return "";
let out = "";
let lastPos = 0;
for (let i = 0; i < len; i++) {
let c = str.charCodeAt(i);
// ASCII
if (c < 0x80) {
if (noEscapeTable[c] === 1) continue;
if (lastPos < i) out += str.slice(lastPos, i);
lastPos = i + 1;
out += hexTable[c];
continue;
}
if (lastPos < i) out += str.slice(lastPos, i);
// Multi-byte characters ...
if (c < 0x800) {
lastPos = i + 1;
out += hexTable[0xc0 | (c >> 6)] + hexTable[0x80 | (c & 0x3f)];
continue;
}
if (c < 0xd800 || c >= 0xe000) {
lastPos = i + 1;
out += hexTable[0xe0 | (c >> 12)] +
hexTable[0x80 | ((c >> 6) & 0x3f)] +
hexTable[0x80 | (c & 0x3f)];
continue;
}
// Surrogate pair
++i;
// This branch should never happen because all URLSearchParams entries
// should already be converted to USVString. But, included for
// completion's sake anyway.
if (i >= len) throw new ERR_INVALID_URI();
const c2 = str.charCodeAt(i) & 0x3ff;
lastPos = i + 1;
c = 0x10000 + (((c & 0x3ff) << 10) | c2);
out += hexTable[0xf0 | (c >> 18)] +
hexTable[0x80 | ((c >> 12) & 0x3f)] +
hexTable[0x80 | ((c >> 6) & 0x3f)] +
hexTable[0x80 | (c & 0x3f)];
}
if (lastPos === 0) return str;
if (lastPos < len) return out + str.slice(lastPos);
return out;
}
export default {
hexTable,
encodeStr,
isHexTable,
};