diff options
| author | littleblack111 <littleblack11111@gmail.com> | 2023-10-31 15:37:35 +0800 |
|---|---|---|
| committer | littleblack111 <littleblack11111@gmail.com> | 2023-10-31 15:37:35 +0800 |
| commit | d5f14083061f2ce6a42313188443a42e30796320 (patch) | |
| tree | cc6a9889e08b29595a76a33b9e7b4ef84866468b /node_modules/@webassemblyjs/utf8/src | |
| parent | b1a6ea021f29f182b62f9f81024a3d8ac8621b7f (diff) | |
added make browserlist(autoprefixer) work fixed
Diffstat (limited to 'node_modules/@webassemblyjs/utf8/src')
| -rw-r--r-- | node_modules/@webassemblyjs/utf8/src/decoder.js | 67 | ||||
| -rw-r--r-- | node_modules/@webassemblyjs/utf8/src/encoder.js | 44 | ||||
| -rw-r--r-- | node_modules/@webassemblyjs/utf8/src/index.js | 4 |
3 files changed, 115 insertions, 0 deletions
diff --git a/node_modules/@webassemblyjs/utf8/src/decoder.js b/node_modules/@webassemblyjs/utf8/src/decoder.js new file mode 100644 index 00000000..de80d125 --- /dev/null +++ b/node_modules/@webassemblyjs/utf8/src/decoder.js @@ -0,0 +1,67 @@ +function con(b) { + if ((b & 0xc0) === 0x80) { + return b & 0x3f; + } else { + throw new Error("invalid UTF-8 encoding"); + } +} + +function code(min, n) { + if (n < min || (0xd800 <= n && n < 0xe000) || n >= 0x10000) { + throw new Error("invalid UTF-8 encoding"); + } else { + return n; + } +} + +export function decode(bytes) { + return _decode(bytes) + .map((x) => String.fromCharCode(x)) + .join(""); +} + +function _decode(bytes) { + const result = []; + while (bytes.length > 0) { + const b1 = bytes[0]; + if (b1 < 0x80) { + result.push(code(0x0, b1)); + bytes = bytes.slice(1); + continue; + } + + if (b1 < 0xc0) { + throw new Error("invalid UTF-8 encoding"); + } + + const b2 = bytes[1]; + if (b1 < 0xe0) { + result.push(code(0x80, ((b1 & 0x1f) << 6) + con(b2))); + bytes = bytes.slice(2); + continue; + } + + const b3 = bytes[2]; + if (b1 < 0xf0) { + result.push(code(0x800, ((b1 & 0x0f) << 12) + (con(b2) << 6) + con(b3))); + bytes = bytes.slice(3); + continue; + } + + const b4 = bytes[3]; + if (b1 < 0xf8) { + result.push( + code( + 0x10000, + ((((b1 & 0x07) << 18) + con(b2)) << 12) + (con(b3) << 6) + con(b4) + ) + ); + bytes = bytes.slice(4); + continue; + } + + throw new Error("invalid UTF-8 encoding"); + } + + return result; +} diff --git a/node_modules/@webassemblyjs/utf8/src/encoder.js b/node_modules/@webassemblyjs/utf8/src/encoder.js new file mode 100644 index 00000000..b17951fd --- /dev/null +++ b/node_modules/@webassemblyjs/utf8/src/encoder.js @@ -0,0 +1,44 @@ +function con(n) { + return 0x80 | (n & 0x3f); +} + +export function encode(str) { + const arr = str.split("").map((x) => x.charCodeAt(0)); + return _encode(arr); +} + +function _encode(arr) { + if (arr.length === 0) { + return []; + } + + const [n, ...ns] = arr; + + if (n < 0) { + throw new Error("utf8"); + } + + if (n < 0x80) { + return [n, ..._encode(ns)]; + } + + if (n < 0x800) { + return [0xc0 | (n >>> 6), con(n), ..._encode(ns)]; + } + + if (n < 0x10000) { + return [0xe0 | (n >>> 12), con(n >>> 6), con(n), ..._encode(ns)]; + } + + if (n < 0x110000) { + return [ + 0xf0 | (n >>> 18), + con(n >>> 12), + con(n >>> 6), + con(n), + ..._encode(ns), + ]; + } + + throw new Error("utf8"); +} diff --git a/node_modules/@webassemblyjs/utf8/src/index.js b/node_modules/@webassemblyjs/utf8/src/index.js new file mode 100644 index 00000000..82cf9a70 --- /dev/null +++ b/node_modules/@webassemblyjs/utf8/src/index.js @@ -0,0 +1,4 @@ +// @flow + +export { decode } from "./decoder"; +export { encode } from "./encoder"; |
