/// <summary>
/// 将用Base64编码字符串还原
/// <param name="input">输入字符串</param>
/// <param name="encodingUsing">默认编码UTF-8</param>
/// </summary>
public static string FromBase64(this string input, Encoding encodingUsing = null)
{
if (string.IsNullOrEmpty(input))
return "";
byte[] tempArray = Convert.FromBase64String(input);
return encodingUsing.NullCheck(Encoding.UTF8).GetString(tempArray);
}
/// <summary>
/// Converts a byte array to a string
/// </summary>
public static string ToEncodedString(this byte[] input, Encoding encodingUsing = null, int index = 0, int count = -1)
{
if (input == null)
return "";
if (count == -1)
count = input.Length - index;
return encodingUsing.NullCheck(new UTF8Encoding()).GetString(input, index, count);
}
/// <summary>
/// Converts a byte array to a string
/// </summary>
/// <param name="Input">input array</param>
/// <param name="EncodingUsing">The type of encoding the string is using (defaults to UTF8)</param>
/// <param name="Count">Number of bytes starting at the index to convert (use -1 for the entire array starting at the index)</param>
/// <returns>string of the byte array</returns>
public static string ToEncodedString(this byte[] Input, Encoding EncodingUsing = null, int Index = 0, int Count = -1)
{
if (Input.IsNull())
return "";
if (Count == -1)
Count = Input.Length - Index;
return EncodingUsing.NullCheck(new UTF8Encoding()).GetString(Input, Index, Count);
}
/// <summary>
/// Converts a string to a string of another encoding
/// </summary>
/// <param name="Input">input string</param>
/// <param name="OriginalEncodingUsing">The type of encoding the string is currently using (defaults to ASCII)</param>
/// <param name="EncodingUsing">The type of encoding the string is converted into (defaults to UTF8)</param>
/// <returns>string of the byte array</returns>
public static string Encode(this string Input, Encoding OriginalEncodingUsing = null, Encoding EncodingUsing = null)
{
if (string.IsNullOrEmpty(Input))
return "";
OriginalEncodingUsing = OriginalEncodingUsing.NullCheck(new ASCIIEncoding());
EncodingUsing = EncodingUsing.NullCheck(new UTF8Encoding());
return Encoding.Convert(OriginalEncodingUsing, EncodingUsing, Input.ToByteArray(OriginalEncodingUsing))
.ToEncodedString(EncodingUsing);
}
/// <summary>
/// Converts a string to a byte array
/// </summary>
/// <param name="Input">input string</param>
/// <param name="EncodingUsing">The type of encoding the string is using (defaults to UTF8)</param>
/// <returns>the byte array representing the string</returns>
public static byte[] ToByteArray(this string Input, Encoding EncodingUsing = null)
{
return string.IsNullOrEmpty(Input) ? null : EncodingUsing.NullCheck(new UTF8Encoding()).GetBytes(Input);
}
/// <summary>
/// Converts from the specified encoding to a base 64 string
/// </summary>
/// <param name="Input">Input string</param>
/// <param name="OriginalEncodingUsing">The type of encoding the string is using (defaults to UTF8)</param>
/// <returns>Bas64 string</returns>
public static string ToBase64(this string Input, Encoding OriginalEncodingUsing = null)
{
if (string.IsNullOrEmpty(Input))
return "";
byte[] TempArray = OriginalEncodingUsing.NullCheck(new UTF8Encoding()).GetBytes(Input);
return Convert.ToBase64String(TempArray);
}
/// <summary>
/// Converts base 64 string based on the encoding passed in
/// </summary>
/// <param name="Input">Input string</param>
/// <param name="EncodingUsing">The type of encoding the string is using (defaults to UTF8)</param>
/// <returns>string in the encoding format</returns>
public static string FromBase64(this string Input, Encoding EncodingUsing)
{
if (string.IsNullOrEmpty(Input))
return "";
byte[] TempArray = Convert.FromBase64String(Input);
return EncodingUsing.NullCheck(new UTF8Encoding()).GetString(TempArray);
}
/// <summary>
/// Saves a string to a file (asynchronously)
/// </summary>
/// <param name="file">File to save to</param>
/// <param name="content">Content to save to the file</param>
/// <param name="callBack">Call back function</param>
/// <param name="stateObject">State object</param>
/// <param name="encodingUsing">Encoding that the content is using (defaults to ASCII)</param>
/// <param name="mode">Mode for saving the file (defaults to Create)</param>
/// <returns>The FileInfo object</returns>
public static FileInfo SaveAsync(this FileInfo file, string content, AsyncCallback callBack,
object stateObject, FileMode mode = FileMode.Create,
Encoding encodingUsing = null)
{
Guard.NotNull(file, "file");
return file.SaveAsync(encodingUsing.NullCheck(new ASCIIEncoding()).GetBytes(content), callBack, stateObject,
mode);
}
/// <summary>
/// Saves a string to a file
/// </summary>
/// <param name="file">File to save to</param>
/// <param name="content">Content to save to the file</param>
/// <param name="encodingUsing">Encoding that the content is using (defaults to ASCII)</param>
/// <param name="mode">Mode for saving the file (defaults to Create)</param>
/// <returns>The FileInfo object</returns>
public static FileInfo Save(this FileInfo file, string content, FileMode mode = FileMode.Create,
Encoding encodingUsing = null)
{
Guard.NotNull(file, "file");
return file.Save(encodingUsing.NullCheck(new ASCIIEncoding()).GetBytes(content), mode);
}
/// <summary>
/// Converts a string to a string of another encoding
/// </summary>
/// <param name="input">input string</param>
/// <param name="originalEncodingUsing">The type of encoding the string is currently using (defaults to ASCII)</param>
/// <param name="encodingUsing">The type of encoding the string is converted into (defaults to UTF8)</param>
/// <returns>string of the byte array</returns>
public static string Encode(this string input, Encoding originalEncodingUsing = null,
Encoding encodingUsing = null)
{
if (string.IsNullOrEmpty(input))
return "";
originalEncodingUsing = originalEncodingUsing.NullCheck(new ASCIIEncoding());
encodingUsing = encodingUsing.NullCheck(new UTF8Encoding());
return Encoding.Convert(originalEncodingUsing, encodingUsing, input.ToByteArray(originalEncodingUsing))
.ToEncodedString(encodingUsing);
}
/// <summary>
/// Saves a string to a file (asynchronously)
/// </summary>
/// <param name="File">File to save to</param>
/// <param name="Content">Content to save to the file</param>
/// <param name="CallBack">Call back function</param>
/// <param name="StateObject">State object</param>
/// <param name="EncodingUsing">Encoding that the content is using (defaults to ASCII)</param>
/// <param name="Mode">Mode for saving the file (defaults to Create)</param>
/// <returns>The FileInfo object</returns>
public static FileInfo SaveAsync(this FileInfo File, string Content, AsyncCallback CallBack,
object StateObject, FileMode Mode = FileMode.Create, Encoding EncodingUsing = null)
{
File.ThrowIfNull("File");
return File.SaveAsync(EncodingUsing.NullCheck(new ASCIIEncoding()).GetBytes(Content), CallBack, StateObject, Mode);
}
/// <summary>
/// Saves a string to a file
/// </summary>
/// <param name="File">File to save to</param>
/// <param name="Content">Content to save to the file</param>
/// <param name="EncodingUsing">Encoding that the content is using (defaults to ASCII)</param>
/// <param name="Mode">Mode for saving the file (defaults to Create)</param>
/// <returns>The FileInfo object</returns>
public static FileInfo Save(this FileInfo File, string Content, FileMode Mode = FileMode.Create, Encoding EncodingUsing = null)
{
File.ThrowIfNull("File");
return File.Save(EncodingUsing.NullCheck(new ASCIIEncoding()).GetBytes(Content), Mode);
}
/// <summary>
/// 将字符串编码为字节数组（默认编码为UTF8)
/// </summary>
public static byte[] ToByteArray(this string input, Encoding encodingUsing = null)
{
return string.IsNullOrEmpty(input) ? null : encodingUsing.NullCheck(Encoding.UTF8).GetBytes(input);
}
/// <summary>
/// 将字符串用Base64编码
/// </summary>
public static string ToBase64(this string input, Encoding originalEncodingUsing = null)
{
if (string.IsNullOrEmpty(input))
return "";
byte[] tempArray = originalEncodingUsing.NullCheck(Encoding.UTF8).GetBytes(input);
return Convert.ToBase64String(tempArray);
}
