BencodeNET/BencodeNET/Exceptions/InvalidBencodeException.cs at master · Krusen/BencodeNET · GitHub

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using System;

#pragma warning disable 1591

namespace BencodeNET.Exceptions

{

/// <summary>

/// Represents parse errors when encountering invalid bencode of some sort.

/// </summary>

/// <typeparam name="T">The type being parsed.</typeparam>

public class InvalidBencodeException<T> : BencodeException<T>

{

/// <summary>

/// The position in the stream where the error happened or

/// the starting position of the parsed object that caused the error.

/// </summary>

public long StreamPosition { get; set; }

public InvalidBencodeException()

{ }

public InvalidBencodeException(string message)

: base(message)

{ }

public InvalidBencodeException(string message, Exception inner)

: base(message, inner)

{ }

public InvalidBencodeException(string message, Exception inner, long streamPosition)

: base($"Failed to parse {typeof(T).Name}. {message}", inner)

{

StreamPosition = Math.Max(0, streamPosition);

}

public InvalidBencodeException(string message, long streamPosition)

: base($"Failed to parse {typeof(T).Name}. {message}")

{

StreamPosition = Math.Max(0, streamPosition);

}

internal static InvalidBencodeException<T> InvalidBeginningChar(char invalidChar, long streamPosition)

{

var message =

$"Invalid beginning character of object. Found '{invalidChar}' at position {streamPosition}. Valid characters are: 0-9, 'i', 'l' and 'd'";

return new InvalidBencodeException<T>(message, streamPosition);

}

internal static InvalidBencodeException<T> MissingEndChar(long streamPosition)

{

var message = "Missing end character of object. Expected 'e' but reached end of stream.";

return new InvalidBencodeException<T>(message, streamPosition);

}

internal static InvalidBencodeException<T> BelowMinimumLength(int minimumLength, long actualLength, long streamPosition)

{

var message =

$"Invalid length. Minimum valid stream length for parsing '{typeof (T).FullName}' is {minimumLength} but the actual length was only {actualLength}.";

return new InvalidBencodeException<T>(message, streamPosition);

}

internal static InvalidBencodeException<T> UnexpectedChar(char expected, char unexpected, long streamPosition)

{

var message = unexpected == default

? $"Unexpected character. Expected '{expected}' but reached end of stream."

: $"Unexpected character. Expected '{expected}' but found '{unexpected}' at position {streamPosition}.";

return new InvalidBencodeException<T>(message, streamPosition);

}

BencodeNET/BencodeNET/Exceptions/InvalidBencodeException.cs at master · Krusen/BencodeNET · GitHub

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