Decoding the file's encoding: A beginner's guide

I need help determining the encoding of a file in order to only upload CSV files with utf-8 format. If there are any non utf-8 characters, I want to display an error message.

Currently, I am utilizing Papa Parser for parsing.

Is there a way to detect the encoding of a file using either Java or JavaScript?

var fileElement = element.find('.csv-upload');
var file = fileElement[0].files[0]
var parseConfig = {
        skipEmptyLines: true,
        header: true,
        encoding:'UTF-8',
        trimHeaders: true,
        complete: function (content) {
          scope.onFileRead(content, fileElement[0]);
        }
      };

      if (scope.rowsToParse) {
        parseConfig.preview = scope.rowsToParse;
      }

      if (file) {
        Papa.parse(file, parseConfig);
      }

Answer №1

A CSV file does not contain any encoding information within it. It is simply a series of bytes.

Prior to reading the file, you must determine if it includes non-UTF8 characters and identify the correct file encoding to use.

If you are working with Java (assuming based on the Spring tag), consider utilizing one of the recommended libraries to detect the file type.

Is there a java library equivalent to file command in unix

There may be a similar solution available for Javascript as well.

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