/// <summary>
/// Determines the encoding of a file
/// </summary>
/// <returns></returns>
public static Encoding GetEncoding(this FileInfo source)
{
using (var stream = File.Open(source.FullName, FileMode.Open, FileAccess.Read, FileShare.Delete | FileShare.ReadWrite))
{
using (var reader = new StreamReaderExtended(stream, true))
{
var something = reader.Peek();
return reader.CurrentEncoding;
}
}
}
/// <summary>
/// Finds the delimiter by looking for the first line in the file and comparing chars
/// </summary>
/// <param name="source">The source.</param>
/// <returns></returns>
public static int FindDelimiter(this FileInfo source)
{
using (var stream = File.Open(source.FullName, FileMode.Open, FileAccess.Read, FileShare.Delete | FileShare.ReadWrite))
{
using (var reader = new StreamReaderExtended(stream, Encoding.Default, true))
{
if (reader.EndOfStream)
return -1;
do
{
var ch = (char)reader.Read();
// Note the following common line feed chars:
// \n - UNIX \r\n - DOS \r - Mac
switch (ch)
{
case '\r':
var next = (char)reader.Peek();
//with \n is WINDOWS delimiter. Otherwise mac
return next == '\n' ? 2 : 1;
case '\n':
return 1;
}
} while (!reader.EndOfStream);
return -1;
}
}
}