public void TestStream()
{
var str = "abcdefghijklmnopqrstuvwxyz 中文";
using var stream = new MemoryStream(Encoding.UTF8.GetBytes(str));
var streamArr = stream.Separate(10).ToList();
Assert.IsTrue(streamArr.Count > 0);
var reader = new CharsReader(streamArr, Encoding.UTF8);
Assert.AreEqual(str, reader.ReadToEnd());
foreach (var s in streamArr)
{
s.Dispose();
}
reader.Close();
str = "abcdefg\rhijklmn\nopq rst\r\nuvw xyz";
using var stream2 = CharsReader.ToStream(str);
var lines = CharsReader.ReadLines(stream2, Encoding.UTF8).ToList();
Assert.AreEqual(4, lines.Count);
reader = new CharsReader(str);
Assert.AreEqual('a', reader.Peek());
Assert.AreEqual('a', reader.Read());
var arr = new char[] { ' ', ' ', ' ', ' ', ' ', ' ', ' ' };
reader.Read(arr, 1, 4);
Assert.AreEqual('b', arr[1]);
reader.ReadLine();
reader.Dispose();
}
/// <summary>
/// Reads lines from a specific stream.
/// </summary>
/// <param name="file">The file to read.</param>
/// <param name="detectEncodingFromByteOrderMarks">true if look for byte order marks at the beginning of the file; otherwise, false.</param>
/// <param name="removeEmptyLine">true if need remove the empty line; otherwise, false.</param>
/// <returns>Lines from the specific stream reader.</returns>
/// <exception cref="ArgumentNullException">file was null.</exception>
/// <exception cref="FileNotFoundException">file was not found.</exception>
/// <exception cref="DirectoryNotFoundException">The directory of the file was not found.</exception>
/// <exception cref="NotSupportedException">Cannot read the file.</exception>
public static IEnumerable <string> ReadLines(FileInfo file, bool detectEncodingFromByteOrderMarks, bool removeEmptyLine = false)
{
if (file == null)
{
throw new ArgumentNullException(nameof(file), "file should not be null.");
}
using (var reader = new StreamReader(file.FullName, detectEncodingFromByteOrderMarks))
{
return(CharsReader.ReadLines(reader, removeEmptyLine));
}
}
/// <summary>
/// Reads lines from a specific stream.
/// </summary>
/// <param name="file">The file to read.</param>
/// <param name="detectEncodingFromByteOrderMarks">true if look for byte order marks at the beginning of the file; otherwise, false.</param>
/// <param name="removeEmptyLine">true if need remove the empty line; otherwise, false.</param>
/// <returns>Lines from the specific stream reader.</returns>
/// <exception cref="ArgumentNullException">file was null.</exception>
/// <exception cref="FileNotFoundException">file was not found.</exception>
/// <exception cref="DirectoryNotFoundException">The directory of the file was not found.</exception>
/// <exception cref="NotSupportedException">Cannot read the file.</exception>
public static IEnumerable <string> ReadLines(this FileInfo file, bool detectEncodingFromByteOrderMarks, bool removeEmptyLine = false)
{
return(CharsReader.ReadLines(file, detectEncodingFromByteOrderMarks, removeEmptyLine));
}
/// <summary>
/// Reads lines from a specific stream reader.
/// </summary>
/// <param name="reader">The stream reader.</param>
/// <param name="removeEmptyLine">true if need remove the empty line; otherwise, false.</param>
/// <returns>Lines from the specific stream reader.</returns>
/// <exception cref="NotSupportedException">The stream does not support reading.</exception>
/// <exception cref="IOException">An I/O error occurs.</exception>
/// <exception cref="ObjectDisposedException">The stream has disposed.</exception>
public static IEnumerable <string> ReadLines(this TextReader reader, bool removeEmptyLine = false)
{
return(CharsReader.ReadLines(reader, removeEmptyLine));
}
/// <summary>
/// Reads lines from a specific stream.
/// </summary>
/// <param name="file">The file to read.</param>
/// <param name="encoding">The character encoding to use.</param>
/// <param name="removeEmptyLine">true if need remove the empty line; otherwise, false.</param>
/// <returns>Lines from the specific stream reader.</returns>
/// <exception cref="ArgumentNullException">file was null.</exception>
/// <exception cref="FileNotFoundException">file was not found.</exception>
/// <exception cref="DirectoryNotFoundException">The directory of the file was not found.</exception>
/// <exception cref="NotSupportedException">Cannot read the file.</exception>
/// <exception cref="IOException">An I/O error occurs.</exception>
public static IEnumerable <string> ReadLines(this FileInfo file, Encoding encoding, bool removeEmptyLine = false)
{
return(CharsReader.ReadLines(file, encoding, removeEmptyLine));
}
