using System;
using System.IO;
using System.Text;

namespace MessagingToolkit.QRCode.Codec.Util;

public class SystemUtils
{
	public static int ReadInput(Stream sourceStream, sbyte[] target, int start, int count)
	{
		if (target.Length == 0)
		{
			return 0;
		}
		byte[] array = new byte[target.Length];
		int num = sourceStream.Read(array, start, count);
		if (num == 0)
		{
			return -1;
		}
		for (int i = start; i < start + num; i++)
		{
			target[i] = (sbyte)array[i];
		}
		return num;
	}

	public static int ReadInput(TextReader sourceTextReader, short[] target, int start, int count)
	{
		if (target.Length == 0)
		{
			return 0;
		}
		char[] array = new char[target.Length];
		int num = sourceTextReader.Read(array, start, count);
		if (num == 0)
		{
			return -1;
		}
		for (int i = start; i < start + num; i++)
		{
			target[i] = (short)array[i];
		}
		return num;
	}

	public static void WriteStackTrace(Exception throwable, TextWriter stream)
	{
		stream.Write(throwable.StackTrace);
		stream.Flush();
	}

	public static int URShift(int number, int bits)
	{
		if (number >= 0)
		{
			return number >> bits;
		}
		return (number >> bits) + (2 << ~bits);
	}

	public static int URShift(int number, long bits)
	{
		return URShift(number, (int)bits);
	}

	public static long URShift(long number, int bits)
	{
		if (number >= 0)
		{
			return number >> bits;
		}
		return (number >> bits) + (2L << ~bits);
	}

	public static long URShift(long number, long bits)
	{
		return URShift(number, (int)bits);
	}

	public static byte[] ToByteArray(sbyte[] sbyteArray)
	{
		byte[] array = null;
		if (sbyteArray != null)
		{
			array = new byte[sbyteArray.Length];
			for (int i = 0; i < sbyteArray.Length; i++)
			{
				array[i] = (byte)sbyteArray[i];
			}
		}
		return array;
	}

	public static byte[] ToByteArray(string sourceString)
	{
		return Encoding.UTF8.GetBytes(sourceString);
	}

	public static byte[] ToByteArray(object[] tempObjectArray)
	{
		byte[] array = null;
		if (tempObjectArray != null)
		{
			array = new byte[tempObjectArray.Length];
			for (int i = 0; i < tempObjectArray.Length; i++)
			{
				array[i] = (byte)tempObjectArray[i];
			}
		}
		return array;
	}

	public static sbyte[] ToSByteArray(byte[] byteArray)
	{
		sbyte[] array = null;
		if (byteArray != null)
		{
			array = new sbyte[byteArray.Length];
			for (int i = 0; i < byteArray.Length; i++)
			{
				array[i] = (sbyte)byteArray[i];
			}
		}
		return array;
	}

	public static char[] ToCharArray(sbyte[] sByteArray)
	{
		return Encoding.UTF8.GetChars(ToByteArray(sByteArray));
	}

	public static char[] ToCharArray(byte[] byteArray)
	{
		return Encoding.UTF8.GetChars(byteArray);
	}
}