mirror of
https://github.com/oven-sh/bun
synced 2026-02-11 19:38:58 +00:00
9fd5b20aa3
## Summary
This PR integrates WebKit's text codec implementations into Bun's
TextDecoder, adding support for 24 additional character encodings beyond
the native UTF-8, UTF-16, and Latin1.
Fixes https://github.com/oven-sh/bun/issues/11564
## What's New
### Supported Encodings (24 total)
- **11 single-byte encodings**: IBM866, ISO-8859-3/6/7/8/8-I, KOI8-U,
windows-874/1253/1255/1257
- **7 CJK encodings**: Big5, EUC-JP, ISO-2022-JP, Shift_JIS, EUC-KR,
GBK, GB18030
- **2 special encodings**: x-user-defined, replacement
### Implementation Details
- Integrated WebKit's text codec C++ implementations
- Generated static encoding tables from WHATWG spec (no ICU dependency)
- Created C++ wrapper for Zig/C++ interop
- All encoding aliases are supported (e.g., `sjis` → `shift_jis`)
- Proper whitespace trimming for encoding labels
## Testing
- ✅ Added comprehensive tests for all supported encodings
- ✅ Passes Web Platform Tests for single-byte decoders
- ✅ Passes Web Platform Tests for encoding labels
- ✅ All 2,227 tests pass
## Test Output
```
bun test v1.2.19 (9feaab47)
2207 pass
0 fail
5012 expect() calls
Ran 2207 tests across 1 file. [899.00ms]
```
## Not Included
The following encodings were not added due to ICU data loading
constraints:
- ISO-8859-2, 4, 5, 10, 13, 14, 15, 16
- Windows-1250, 1251, 1254, 1256, 1258
- KOI8-R, macintosh, x-mac-cyrillic
## Example Usage
```javascript
// CJK encodings
const decoder = new TextDecoder("shift_jis");
const bytes = new Uint8Array([0x82, 0xb1, 0x82, 0xf1]);
console.log(decoder.decode(bytes)); // "こん"
// Single-byte encodings
const greekDecoder = new TextDecoder("iso-8859-7");
const greekBytes = new Uint8Array([0xC3, 0xe5, 0xe9, 0xdc]);
console.log(greekDecoder.decode(greekBytes)); // "Γειά"
```
🤖 Generated with [Claude Code](https://claude.ai/code)
---------
Co-authored-by: Claude <claude@anthropic.ai>
Co-authored-by: Claude <noreply@anthropic.com>
Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>
240 lines
7.2 KiB
Zig
240 lines
7.2 KiB
Zig
/// https://encoding.spec.whatwg.org/encodings.json
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pub const EncodingLabel = enum {
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@"UTF-8",
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IBM866,
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@"ISO-8859-3",
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@"ISO-8859-6",
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@"ISO-8859-7",
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@"ISO-8859-8",
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@"ISO-8859-8-I",
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@"KOI8-U",
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@"windows-874",
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/// Also known as
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/// - ASCII
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/// - latin1
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@"windows-1252",
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@"windows-1253",
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@"windows-1255",
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@"windows-1257",
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Big5,
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@"EUC-JP",
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@"ISO-2022-JP",
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Shift_JIS,
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@"EUC-KR",
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@"UTF-16BE",
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@"UTF-16LE",
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@"x-user-defined",
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replacement,
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GBK,
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GB18030,
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pub fn getLabel(this: EncodingLabel) []const u8 {
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return switch (this) {
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.@"UTF-8" => "utf-8",
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.@"UTF-16LE" => "utf-16le",
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.@"UTF-16BE" => "utf-16be",
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.@"windows-1252" => "windows-1252",
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.IBM866 => "ibm866",
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.@"ISO-8859-3" => "iso-8859-3",
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.@"ISO-8859-6" => "iso-8859-6",
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.@"ISO-8859-7" => "iso-8859-7",
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.@"ISO-8859-8" => "iso-8859-8",
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.@"ISO-8859-8-I" => "iso-8859-8-i",
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.@"KOI8-U" => "koi8-u",
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.@"windows-874" => "windows-874",
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.@"windows-1253" => "windows-1253",
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.@"windows-1255" => "windows-1255",
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.@"windows-1257" => "windows-1257",
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.Big5 => "big5",
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.@"EUC-JP" => "euc-jp",
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.@"ISO-2022-JP" => "iso-2022-jp",
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.Shift_JIS => "shift_jis",
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.@"EUC-KR" => "euc-kr",
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.@"x-user-defined" => "x-user-defined",
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.replacement => "replacement",
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.GBK => "gbk",
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.GB18030 => "gb18030",
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};
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}
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pub const latin1 = EncodingLabel.@"windows-1252";
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const string_map = bun.ComptimeStringMap(EncodingLabel, .{
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// Windows-1252 (Latin1) aliases
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.{ "l1", latin1 },
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.{ "ascii", latin1 },
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.{ "cp819", latin1 },
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.{ "cp1252", latin1 },
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.{ "ibm819", latin1 },
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.{ "latin1", latin1 },
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.{ "iso88591", latin1 },
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.{ "us-ascii", latin1 },
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.{ "x-cp1252", latin1 },
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.{ "iso8859-1", latin1 },
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.{ "iso_8859-1", latin1 },
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.{ "iso-8859-1", latin1 },
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.{ "iso-ir-100", latin1 },
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.{ "csisolatin1", latin1 },
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.{ "windows-1252", latin1 },
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.{ "ansi_x3.4-1968", latin1 },
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.{ "iso_8859-1:1987", latin1 },
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// UTF-16LE aliases
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.{ "ucs-2", .@"UTF-16LE" },
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.{ "utf-16", .@"UTF-16LE" },
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.{ "unicode", .@"UTF-16LE" },
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.{ "utf-16le", .@"UTF-16LE" },
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.{ "csunicode", .@"UTF-16LE" },
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.{ "unicodefeff", .@"UTF-16LE" },
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.{ "iso-10646-ucs-2", .@"UTF-16LE" },
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// UTF-16BE aliases
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.{ "utf-16be", .@"UTF-16BE" },
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// UTF-8 aliases
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.{ "utf8", .@"UTF-8" },
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.{ "utf-8", .@"UTF-8" },
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.{ "unicode11utf8", .@"UTF-8" },
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.{ "unicode20utf8", .@"UTF-8" },
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.{ "x-unicode20utf8", .@"UTF-8" },
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.{ "unicode-1-1-utf-8", .@"UTF-8" },
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// IBM866 aliases
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.{ "ibm866", .IBM866 },
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.{ "cp866", .IBM866 },
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.{ "866", .IBM866 },
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.{ "csibm866", .IBM866 },
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// ISO-8859-3 aliases
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.{ "iso-8859-3", .@"ISO-8859-3" },
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.{ "iso8859-3", .@"ISO-8859-3" },
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.{ "iso_8859-3", .@"ISO-8859-3" },
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.{ "latin3", .@"ISO-8859-3" },
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.{ "csisolatin3", .@"ISO-8859-3" },
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.{ "iso-ir-109", .@"ISO-8859-3" },
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.{ "l3", .@"ISO-8859-3" },
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// ISO-8859-6 aliases
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.{ "iso-8859-6", .@"ISO-8859-6" },
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.{ "iso8859-6", .@"ISO-8859-6" },
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.{ "iso_8859-6", .@"ISO-8859-6" },
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.{ "arabic", .@"ISO-8859-6" },
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.{ "csisolatinarabic", .@"ISO-8859-6" },
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.{ "iso-ir-127", .@"ISO-8859-6" },
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.{ "asmo-708", .@"ISO-8859-6" },
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.{ "ecma-114", .@"ISO-8859-6" },
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// ISO-8859-7 aliases
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.{ "iso-8859-7", .@"ISO-8859-7" },
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.{ "iso8859-7", .@"ISO-8859-7" },
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.{ "iso_8859-7", .@"ISO-8859-7" },
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.{ "greek", .@"ISO-8859-7" },
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.{ "greek8", .@"ISO-8859-7" },
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.{ "csisolatingreek", .@"ISO-8859-7" },
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.{ "iso-ir-126", .@"ISO-8859-7" },
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.{ "ecma-118", .@"ISO-8859-7" },
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.{ "elot_928", .@"ISO-8859-7" },
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// ISO-8859-8 aliases
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.{ "iso-8859-8", .@"ISO-8859-8" },
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.{ "iso8859-8", .@"ISO-8859-8" },
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.{ "iso_8859-8", .@"ISO-8859-8" },
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.{ "hebrew", .@"ISO-8859-8" },
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.{ "csisolatinhebrew", .@"ISO-8859-8" },
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.{ "iso-ir-138", .@"ISO-8859-8" },
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.{ "visual", .@"ISO-8859-8" },
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// ISO-8859-8-I aliases
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.{ "iso-8859-8-i", .@"ISO-8859-8-I" },
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.{ "logical", .@"ISO-8859-8-I" },
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.{ "csiso88598i", .@"ISO-8859-8-I" },
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// KOI8-U aliases
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.{ "koi8-u", .@"KOI8-U" },
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.{ "koi8-ru", .@"KOI8-U" },
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// Windows code pages
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.{ "windows-874", .@"windows-874" },
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.{ "dos-874", .@"windows-874" },
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.{ "iso-8859-11", .@"windows-874" },
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.{ "iso8859-11", .@"windows-874" },
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.{ "iso885911", .@"windows-874" },
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.{ "iso_8859-11", .@"windows-874" },
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.{ "tis-620", .@"windows-874" },
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.{ "windows-1253", .@"windows-1253" },
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.{ "cp1253", .@"windows-1253" },
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.{ "x-cp1253", .@"windows-1253" },
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.{ "windows-1255", .@"windows-1255" },
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.{ "cp1255", .@"windows-1255" },
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.{ "x-cp1255", .@"windows-1255" },
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.{ "windows-1257", .@"windows-1257" },
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.{ "cp1257", .@"windows-1257" },
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.{ "x-cp1257", .@"windows-1257" },
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// CJK encodings
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.{ "big5", .Big5 },
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.{ "big5-hkscs", .Big5 },
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.{ "cn-big5", .Big5 },
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.{ "csbig5", .Big5 },
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.{ "x-x-big5", .Big5 },
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.{ "euc-jp", .@"EUC-JP" },
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.{ "cseucpkdfmtjapanese", .@"EUC-JP" },
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.{ "x-euc-jp", .@"EUC-JP" },
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.{ "iso-2022-jp", .@"ISO-2022-JP" },
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.{ "csiso2022jp", .@"ISO-2022-JP" },
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.{ "shift_jis", .Shift_JIS },
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.{ "shift-jis", .Shift_JIS },
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.{ "sjis", .Shift_JIS },
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.{ "csshiftjis", .Shift_JIS },
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.{ "ms932", .Shift_JIS },
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.{ "ms_kanji", .Shift_JIS },
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.{ "windows-31j", .Shift_JIS },
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.{ "x-sjis", .Shift_JIS },
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.{ "euc-kr", .@"EUC-KR" },
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.{ "cseuckr", .@"EUC-KR" },
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.{ "csksc56011987", .@"EUC-KR" },
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.{ "iso-ir-149", .@"EUC-KR" },
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.{ "korean", .@"EUC-KR" },
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.{ "ks_c_5601-1987", .@"EUC-KR" },
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.{ "ks_c_5601-1989", .@"EUC-KR" },
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.{ "ksc5601", .@"EUC-KR" },
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.{ "ksc_5601", .@"EUC-KR" },
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.{ "windows-949", .@"EUC-KR" },
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// Chinese encodings
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.{ "gbk", .GBK },
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.{ "gb2312", .GBK },
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.{ "chinese", .GBK },
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.{ "csgb2312", .GBK },
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.{ "csiso58gb231280", .GBK },
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.{ "gb_2312", .GBK },
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.{ "gb_2312-80", .GBK },
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.{ "iso-ir-58", .GBK },
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.{ "x-gbk", .GBK },
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.{ "gb18030", .GB18030 },
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// Other
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.{ "x-user-defined", .@"x-user-defined" },
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.{ "replacement", .replacement },
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});
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pub fn which(input_: string) ?EncodingLabel {
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const input = strings.trim(input_, " \t\r\n\x0C");
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return string_map.getAnyCase(input);
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}
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};
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const string = []const u8;
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const encoding = @import("./encoding.zig");
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const bun = @import("bun");
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const strings = bun.strings;
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