public static string ToString(byte[] bytes, int index, int length, bool wrap)
{
ThrowHelper.ArgumentNull((bytes == null), nameof(bytes));
ThrowHelper.ArgumentIndexOutOfRange((index < 0), nameof(index));
ThrowHelper.ArgumentLengthOutOfRange((length < 0), nameof(length));
ThrowHelper.ArgumentIndexLengthOutOfArray(((index + length) > bytes.Length));
string[] buffer = new string[length];
for (int i = index; i < index + length; i++)
{
buffer[i - index] = string.Format(
System.Globalization.CultureInfo.InvariantCulture,
"{0:X2}",
bytes[i]);
}
if (wrap)
{
string[][] temp = Meision.Collections.CollectionManager.Divide <string>(buffer, 16);
StringBuilder builder = new StringBuilder();
for (int i = 0; i < temp.Length; i++)
{
builder.AppendLine(string.Join(" ", temp[i]));
}
return(builder.ToString());
}
else
{
return(string.Join(" ", buffer));
}
}
public static NetworkEndPoint Create(string expression)
{
ThrowHelper.ArgumentNull((expression == null), nameof(expression));
Match match = Regex.Match(expression, RegexConstant.GetFullRegularExpression(RegularExpression));
if (!match.Success)
{
return(null);
}
Group hostGroup = match.Groups[RegularExpressionGroupName_Host];
Group portGroup = match.Groups[RegularExpressionGroupName_Port];
string host = hostGroup.Value;
int port = 0;
if (portGroup.Success)
{
port = Convert.ToInt32(portGroup.Value);
}
NetworkEndPoint point = new NetworkEndPoint(host, port);
return(point);
}
public static void Write(this Stream stream, byte[] buffer)
{
ThrowHelper.ArgumentNull((stream == null), nameof(stream));
ThrowHelper.ArgumentNull((buffer == null), nameof(buffer));
stream.Write(buffer, 0, buffer.Length);
}
public override int Read(byte[] buffer, int offset, int count)
{
this.EnsureNotClosed();
ThrowHelper.ArgumentNull((buffer == null), nameof(buffer));
ThrowHelper.ArgumentIndexOutOfRange((offset < 0), nameof(offset));
ThrowHelper.ArgumentLengthOutOfRange((count < 0), nameof(count));
ThrowHelper.ArgumentIndexLengthOutOfArray((offset + count > buffer.Length));
int n = Math.Min(this.Remaining, count);
if (n <= 0)
{
return(0);
}
Debug.Assert(_index + n >= 0, "_position + n >= 0"); // len is less than 2^31 -1.
if (n <= 8)
{
int byteCount = n;
while (--byteCount >= 0)
{
buffer[offset + byteCount] = this._buffer[this._index + byteCount];
}
}
else
{
System.Buffer.BlockCopy(_buffer, _index, buffer, offset, n);
}
_index += n;
return(n);
}
/// <summary>
/// Divide unitary array to binary array.
/// </summary>
/// <param name="array">array which want to be divided</param>
/// <param name="column">Element count in each dimension</param>
/// <returns></returns>
public static T[][] Divide <T>(this IList <T> source, int column)
{
// Validate prameters
ThrowHelper.ArgumentNull((source == null), nameof(source));
// Array length.
int length = source.Count;
// Dimesion to store the array.
int dimesions = Meision.Algorithms.Calculator.CeilingDivision(length, column);
// Count;
int count = 0;
T[][] matrix = new T[dimesions][];
if (dimesions > 0)
{
for (int i = 0; i < dimesions - 1; i++)
{
matrix[i] = new T[column];
// Fill elements
for (int j = 0; j < column; j++)
{
matrix[i][j] = source[count++];
}
}
// Deal with remainder elements.
int left = length - (dimesions - 1) * column;
matrix[dimesions - 1] = new T[left];
for (int j = 0; j < left; j++)
{
matrix[dimesions - 1][j] = source[count++];
}
}
return(matrix);
}
/// <summary>
/// A string extension method that return the left part of the string.
/// </summary>
/// <param name="instance">The instance to act on.</param>
/// <param name="length">The length.</param>
/// <returns>The left part.</returns>
public static string Left(this string instance, int length)
{
ThrowHelper.ArgumentNull((instance == null), nameof(instance));
ThrowHelper.ArgumentMustNotNegative((length < 0), nameof(length));
return(instance.Substring(0, length));
}
public static byte[] ConvertFromStringArray(string[] items)
{
ThrowHelper.ArgumentNull((items == null), nameof(items));
if (items.Length == 0)
{
return(Empty);
}
// Calculate size of string.
int count = 0;
foreach (string item in items)
{
count += (item.Length * sizeof(char));
}
count += (items.Length) * sizeof(char);
byte[] buffer = new byte[count];
// Copy string array.
int index = 0;
foreach (string item in items)
{
unsafe
{
fixed(char *pointer = item)
{
Marshal.Copy(new IntPtr(pointer), buffer, index, item.Length * sizeof(char));
}
}
index += (item.Length + 1) * sizeof(char);
}
return(buffer);
}
public static string ToHexString(this byte[] buffer, string delimiter = null)
{
ThrowHelper.ArgumentNull((buffer == null), nameof(buffer));
if (buffer.Length == 0)
{
return(string.Empty);
}
int length = buffer.Length * 2;
if (delimiter != null)
{
length += ((buffer.Length - 1) * delimiter.Length);
}
StringBuilder builder = new StringBuilder(length, length);
builder.AppendFormat(buffer[0].ToString("X2"));
for (int i = 1; i < buffer.Length; i++)
{
builder.Append(delimiter);
builder.AppendFormat(buffer[i].ToString("X2"));
}
return(builder.ToString());
}
public static string GetBetween(this string instance, int startIndex, string leftText, string rightText)
{
ThrowHelper.ArgumentNull((instance == null), nameof(instance));
ThrowHelper.ArgumentOutOfRange(((startIndex < 0) || (startIndex > instance.Length)), nameof(startIndex));
int pos;
if (string.IsNullOrEmpty(leftText))
{
pos = startIndex;
}
else
{
pos = instance.IndexOf(leftText, startIndex) + leftText.Length;
if (pos < leftText.Length)
{
return(null);
}
}
if (string.IsNullOrEmpty(rightText))
{
return(instance.Substring(pos));
}
else
{
int end = instance.IndexOf(rightText, pos, StringComparison.Ordinal);
if (end < pos)
{
return(null);
}
return(instance.Substring(pos, end - pos));
}
}
/// <summary>
/// A string extension method that right safe.
/// </summary>
/// <param name="instance">The instance to act on.</param>
/// <param name="length">The length.</param>
/// <returns>A string.</returns>
public static string RightSafe(this string instance, int length)
{
ThrowHelper.ArgumentNull((instance == null), nameof(instance));
ThrowHelper.ArgumentMustNotNegative((length < 0), nameof(length));
return(instance.Substring(Math.Max(0, instance.Length - length)));
}
public static long Base2Decode(string text)
{
ThrowHelper.ArgumentNull((text == null), nameof(text));
ThrowHelper.ArgumentStringMustNotEmpty((text.Length == 0), nameof(text));
return(BaseXDecode(text, Base2Templates, Searching));
}
public static TResult[] MakeArray <TResult>(this Vector vector, Func <int, TResult> func)
{
ThrowHelper.ArgumentNull((func == null), nameof(func));
int count = Math.Abs(vector.Length);
TResult[] array = new TResult[count];
if (vector.Length > 0)
{
int value = vector.Offset;
for (int i = 0; i < count; i++)
{
array[i] = func(value++);
}
}
else if (vector.Length < 0)
{
int value = vector.Offset;
for (int i = 0; i < count; i++)
{
array[i] = func(value--);
}
}
else
{
}
return(array);
}
public static string GetUsableFilename(string directory, string filename)
{
ThrowHelper.ArgumentNull((directory == null), nameof(directory));
if (!System.IO.Directory.Exists(directory))
{
throw new System.IO.DirectoryNotFoundException();
}
ThrowHelper.ArgumentNull((filename == null), nameof(filename));
string path = Path.Combine(directory, filename);
if (!System.IO.File.Exists(path))
{
return(filename);
}
int slashPosition = path.LastIndexOf(System.IO.Path.DirectorySeparatorChar);
int extensionPosition = path.IndexOf(Meision.IO.FileManager.FileExtension, slashPosition);
if (extensionPosition != -1)
{
string left = path.Substring(0, extensionPosition);
string right = path.Substring(extensionPosition);
for (int i = 1; i < int.MaxValue; i++)
{
string newPath = string.Format(
System.Globalization.CultureInfo.InvariantCulture,
NewFileFormat,
left,
i.ToString(),
right);
if (!System.IO.File.Exists(newPath))
{
return(System.IO.Path.GetFileName(newPath));
}
}
}
else
{
for (int i = 1; i < int.MaxValue; i++)
{
string newPath = string.Format(
System.Globalization.CultureInfo.InvariantCulture,
NewFileFormat,
path,
i.ToString(),
string.Empty);
if (!System.IO.File.Exists(newPath))
{
return(System.IO.Path.GetFileName(newPath));
}
}
}
return(null);
}
public override void ToBytes(SByte value, byte[] bytes, int index)
{
ThrowHelper.ArgumentNull((bytes == null), nameof(bytes));
ThrowHelper.ArgumentIndexOutOfRange((index < 0), nameof(index));
ThrowHelper.ArgumentIndexOutOfRange(((index + sizeof(SByte)) > bytes.Length), nameof(index));
bytes[index] = (Byte)value;
}
//private NetworkEndPoint()
//{
//}
public NetworkEndPoint(string host, int port)
{
ThrowHelper.ArgumentNull((host == null), nameof(host));
ThrowHelper.ArgumentOutOfRange(((port < MinPort) || (port > MaxPort)), nameof(port), SR.NetworkEndPoint_Exception_InvalidPort);
this._host = host;
this._port = port;
}
// Writes this MemoryStream to another stream.
public virtual void WriteTo(Stream stream)
{
this.EnsureNotClosed();
ThrowHelper.ArgumentNull((stream == null), nameof(stream));
stream.Write(this._buffer, this._start, this._end - this._start);
}
public override Boolean GetBoolean(byte[] data, int index)
{
ThrowHelper.ArgumentNull((data == null), nameof(data));
ThrowHelper.ArgumentIndexOutOfRange((index < 0), nameof(index));
ThrowHelper.ArgumentIndexOutOfRange(((index + sizeof(Boolean)) > data.Length), nameof(index));
return(data[index] != 0);
}
public override SByte GetSByte(byte[] bytes, int index)
{
ThrowHelper.ArgumentNull((bytes == null), nameof(bytes));
ThrowHelper.ArgumentIndexOutOfRange((index < 0), nameof(index));
ThrowHelper.ArgumentIndexOutOfRange(((index + sizeof(SByte)) > bytes.Length), nameof(index));
return((SByte)bytes[index]);
}
public static byte[] GetSegment(this byte[] array, int offset)
{
// Validate parameter(s).
ThrowHelper.ArgumentNull((array == null), nameof(array));
ThrowHelper.ArgumentIndexOutOfRange(((offset < 0) || (offset > array.Length)), nameof(offset));
return(Bytes.GetSegment(array, offset, array.Length - offset));
}
/// <summary>
/// Constructs a new observe relation.
/// </summary>
/// <param name="config">the config</param>
/// <param name="endpoint">the observing endpoint</param>
/// <param name="resource">the observed resource</param>
/// <param name="exchange">the exchange that tries to establish the observe relation</param>
public ObserveRelation(ICoapConfig config, ObservingEndpoint endpoint, IResource resource, Exchange exchange)
{
_config = config ?? throw ThrowHelper.ArgumentNull("config");
_endpoint = endpoint ?? throw ThrowHelper.ArgumentNull("endpoint");
Resource = resource ?? throw ThrowHelper.ArgumentNull("resource");
Exchange = exchange ?? throw ThrowHelper.ArgumentNull("exchange");
Key = $"{Source}#{exchange.Request.TokenString}";
}
public Message AddETag(Byte[] opaque)
{
if (opaque == null)
{
throw ThrowHelper.ArgumentNull("opaque");
}
return(AddOption(Option.Create(OptionType.ETag, opaque)));
}
/// <inheritdoc/>
public Int32 CompareTo(WebLink other)
{
if (other == null)
{
throw ThrowHelper.ArgumentNull("other");
}
return(_uri.CompareTo(other._uri));
}
public override Char GetChar(byte[] data, int index)
{
ThrowHelper.ArgumentNull((data == null), nameof(data));
ThrowHelper.ArgumentIndexOutOfRange((index < 0), nameof(index));
ThrowHelper.ArgumentIndexOutOfRange(((index + sizeof(Char)) > data.Length), nameof(index));
return((Char)this.GetUInt16(data, index));
}
public override void ToBytes(Boolean value, byte[] bytes, int index)
{
ThrowHelper.ArgumentNull((bytes == null), nameof(bytes));
ThrowHelper.ArgumentIndexOutOfRange((index < 0), nameof(index));
ThrowHelper.ArgumentIndexOutOfRange(((index + sizeof(Boolean)) > bytes.Length), nameof(index));
Endian.__little.ToBytes(value, bytes, index);
Meision.Collections.Bytes.Reverse(bytes, index, sizeof(Boolean));
}
/// <inheritdoc/>
public Int32 CompareTo(WebLink other)
{
if (other == null)
{
throw ThrowHelper.ArgumentNull("other");
}
return(string.Compare(Uri, other.Uri, StringComparison.Ordinal));
}
/// <summary>
/// Find the index of pattern in origin array. BMH algorithm search
/// </summary>
/// <param name="origin">origin bytes.</param>
/// <param name="index">index.</param>
/// <param name="length">searching length</param>
/// <param name="pattern">Find bytes.</param>
/// <returns>Index position.</returns>
public static int Search(byte[] origin, int index, byte[] pattern)
{
// Validate parameter(s).
ThrowHelper.ArgumentNull((origin == null), nameof(origin));
ThrowHelper.ArgumentIndexOutOfRange(((index < 0) || (index > origin.Length)), nameof(index));
ThrowHelper.ArgumentNull((pattern == null), nameof(pattern));
return(Bytes.Search(origin, index, origin.Length - index, pattern));
}
public static string FormatWith(this string instance, params object[] args)
{
ThrowHelper.ArgumentNull((instance == null), nameof(instance));
return(string.Format(
System.Globalization.CultureInfo.InvariantCulture,
instance,
args));
}
public BufferStream(byte[] buffer, int offset, int count, bool writable, bool isLittleEndian)
{
ThrowHelper.ArgumentNull((buffer == null), nameof(buffer));
ThrowHelper.ArgumentIndexOutOfRange((offset < 0), nameof(offset));
ThrowHelper.ArgumentLengthOutOfRange((count < 0), nameof(count));
ThrowHelper.ArgumentIndexLengthOutOfArray((offset + count > buffer.Length));
this.InitFromExternBuffer(buffer, offset, count, writable, isLittleEndian);
}
public static void MoveToDirectory(string path, string directory)
{
ThrowHelper.ArgumentNull((path == null), nameof(path));
ThrowHelper.ArgumentNull((directory == null), nameof(directory));
string file = System.IO.Path.GetFileName(path);
System.IO.File.Move(path, System.IO.Path.Combine(directory, file));
}
/// <summary>
/// Gets the http headers from a list of CoAP options. The method iterates
/// over the list looking for a translation of each option in the predefined
/// mapping. This process ignores the proxy-uri and the content-type because
/// they are managed differently. If a mapping is present, the content of the
/// option is mapped to a string accordingly to its original format and set
/// as the content of the header.
/// </summary>
/// <param name="optionList"></param>
/// <returns></returns>
/// <exception cref="ArgumentNullException"></exception>
public static NameValueCollection GetHttpHeaders(IEnumerable <Option> optionList)
{
if (optionList == null)
{
throw ThrowHelper.ArgumentNull("optionList");
}
NameValueCollection headers = new NameValueCollection();
foreach (Option opt in optionList)
{
// skip content-type because it should be translated while handling
// the payload; skip proxy-uri because it has to be translated in a
// different way
if (opt.Type == OptionType.ContentType || opt.Type == OptionType.ProxyUri)
{
continue;
}
string headerName;
if (!_Coap2HttpHeader.TryGetValue(opt.Type, out headerName))
{
continue;
}
// format the value
string headerValue = null;
OptionFormat format = Option.GetFormatByType(opt.Type);
if (format == OptionFormat.Integer)
{
headerValue = opt.IntValue.ToString();
}
else if (format == OptionFormat.String)
{
headerValue = opt.StringValue;
}
else if (format == OptionFormat.Opaque)
{
headerValue = ByteArrayUtils.ToHexString(opt.RawValue);
}
else
{
continue;
}
// custom handling for max-age
// format: cache-control: max-age=60
if (opt.Type == OptionType.MaxAge)
{
headerValue = "max-age=" + headerValue;
}
headers[headerName] = headerValue;
}
return(headers);
}
