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Tim van der Lippe
2a1ede5c26
`manage_node_deps.py` was changed in https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/2259834 to add line endings at the end of the package.json file However, `npm run install-deps` was not rerun to add the line endings. To prevent future CLs that add deps to include the line ending changes, fix them in this CL. R=mathias@chromium.org Change-Id: Id4ee0003520c4aa0cb55494cdf64df57e31a86d7 Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/2263952 Commit-Queue: Tim van der Lippe <tvanderlippe@chromium.org> Commit-Queue: Mathias Bynens <mathias@chromium.org> Auto-Submit: Tim van der Lippe <tvanderlippe@chromium.org> Reviewed-by: Mathias Bynens <mathias@chromium.org>
chardet 
Chardet is a character detection module for NodeJS written in pure Javascript. Module is based on ICU project http://site.icu-project.org/, which uses character occurency analysis to determine the most probable encoding.
Installation
npm i chardet
Usage
To return the encoding with the highest confidence:
var chardet = require('chardet');
chardet.detect(Buffer.alloc('hello there!'));
// or
chardet.detectFile('/path/to/file', function(err, encoding) {});
// or
chardet.detectFileSync('/path/to/file');
To return the full list of possible encodings:
var chardet = require('chardet');
chardet.detectAll(Buffer.alloc('hello there!'));
// or
chardet.detectFileAll('/path/to/file', function(err, encoding) {});
// or
chardet.detectFileAllSync('/path/to/file');
//Returned value is an array of objects sorted by confidence value in decending order
//e.g. [{ confidence: 90, name: 'UTF-8'}, {confidence: 20, name: 'windows-1252', lang: 'fr'}]
Working with large data sets
Sometimes, when data set is huge and you want to optimize performace (in tradeoff of less accuracy), you can sample only first N bytes of the buffer:
chardet.detectFile('/path/to/file', { sampleSize: 32 }, function(err, encoding) {});
Supported Encodings:
- UTF-8
- UTF-16 LE
- UTF-16 BE
- UTF-32 LE
- UTF-32 BE
- ISO-2022-JP
- ISO-2022-KR
- ISO-2022-CN
- Shift-JIS
- Big5
- EUC-JP
- EUC-KR
- GB18030
- ISO-8859-1
- ISO-8859-2
- ISO-8859-5
- ISO-8859-6
- ISO-8859-7
- ISO-8859-8
- ISO-8859-9
- windows-1250
- windows-1251
- windows-1252
- windows-1253
- windows-1254
- windows-1255
- windows-1256
- KOI8-R
Currently only these encodings are supported, more will be added soon.