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using System;
using System.Text;
namespace Org.BouncyCastle.Utilities
{
/// <summary> General string utilities.</summary>
public static class Strings
{
internal static bool IsOneOf(string s, params string[] candidates)
{
foreach (string candidate in candidates)
{
if (s == candidate)
return true;
}
return false;
}
public static string FromByteArray(byte[] bs)
{
char[] cs = new char[bs.Length];
for (int i = 0; i < cs.Length; ++i)
{
cs[i] = Convert.ToChar(bs[i]);
}
return new string(cs);
}
public static byte[] ToByteArray(char[] cs)
{
byte[] bs = new byte[cs.Length];
for (int i = 0; i < bs.Length; ++i)
{
bs[i] = Convert.ToByte(cs[i]);
}
return bs;
}
public static byte[] ToByteArray(string s)
{
byte[] bs = new byte[s.Length];
for (int i = 0; i < bs.Length; ++i)
{
bs[i] = Convert.ToByte(s[i]);
}
return bs;
}
#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER
public static byte[] ToByteArray(ReadOnlySpan<char> cs)
{
byte[] bs = new byte[cs.Length];
for (int i = 0; i < bs.Length; ++i)
{
bs[i] = Convert.ToByte(cs[i]);
}
return bs;
}
#endif
public static string FromAsciiByteArray(byte[] bytes)
{
return Encoding.ASCII.GetString(bytes);
}
public static byte[] ToAsciiByteArray(char[] cs)
{
return Encoding.ASCII.GetBytes(cs);
}
public static byte[] ToAsciiByteArray(string s)
{
return Encoding.ASCII.GetBytes(s);
}
public static string FromUtf8ByteArray(byte[] bytes)
{
return Encoding.UTF8.GetString(bytes);
}
public static byte[] ToUtf8ByteArray(char[] cs)
{
return Encoding.UTF8.GetBytes(cs);
}
public static byte[] ToUtf8ByteArray(string s)
{
return Encoding.UTF8.GetBytes(s);
}
#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER
public static byte[] ToUtf8ByteArray(ReadOnlySpan<char> cs)
{
int count = Encoding.UTF8.GetByteCount(cs);
byte[] bytes = new byte[count];
Encoding.UTF8.GetBytes(cs, bytes);
return bytes;
}
#endif
}
}
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