/// <summary>
/// Extension method to get the canonical file extension for a <see cref="CustomDataSourceReference"/>.
/// </summary>
/// <returns>
/// <inheritdoc cref="FileExtensionUtils.CanonicalizeExtension(string)"/>
/// </returns>
public static string TryGetCanonicalFileExtension(this CustomDataSourceReference self)
{
var fileDataSource = self.DataSource as FileDataSourceAttribute;
var fileDataSourceExtension = fileDataSource?.FileExtension;
return(FileExtensionUtils.CanonicalizeExtension(fileDataSourceExtension));
}
/// <summary>
/// Extension method to check if the file is supported by the <see cref="ICustomDataSource"/>.
/// </summary>
/// <param name="filePath">
/// Full path to the file being checked.
/// </param>
/// <returns>
/// <inheritdoc cref="ICustomDataSource.IsFileSupported(string)"/>
/// </returns>
public static bool Supports(this ICustomDataSource self, string filePath)
{
var supportedExtension = FileExtensionUtils.CanonicalizeExtension(self.TryGetFileExtension());
var fileExtension = FileExtensionUtils.CanonicalizeExtension(Path.GetExtension(filePath));
// Should this be invariant culture?
return(StringComparer.CurrentCultureIgnoreCase.Equals(fileExtension, supportedExtension) &&
self.IsFileSupported(filePath));
}