isTextMimeType function

bool isTextMimeType(String path, { List<int>? headerBytes, })

Checks if a file is considered a text file based on its MIME type.

• path: The path to the file.
• headerBytes: Optional header bytes for more accurate MIME type detection.

Returns true if the file's MIME type is recognized as text, false otherwise.

doTextMimeInit(); // initializes
print(isTextMimeType('a.txt')); // true
print(isTextMimeType('a.pdf')); // false
print(isTextMimeType('a.yml')); // false
// add a custom text mimetype， yml|yaml is a config language.
doTextMimeAdd('yml', 'text/yaml');
print(isTextMimeType('a.yml')); // true

Implementation

bool isTextMimeType(String path, {List<int>? headerBytes}) {
  final mimetype =
      mimetypeResolver.lookup(path, headerBytes: headerBytes) ?? '';
  if (mimetype.isEmpty) return false;
  return mimetype.contains('text/') ||
      mimetype.endsWith('xml') ||
      mimetype.endsWith('json') ||
      mimetype.endsWith('ml');
}