public static string Bit6Extract(byte[] data)
{
BitExtract extract = new BitExtract(data);
StringBuilder result = new StringBuilder();
while (true)
{
List <bool> bits = extract.GetBits(6);
if (bits.Count < 6)
{
break;
}
char ch = (char)BitExtract.ToByte(bits, 6);
// 如果正好末尾是 6 bits 100000，需丢弃
// 注意测试这种情形, 应正确丢弃
if (extract.Count == 0 && ch == 0x20)
{
break;
}
if ((ch & 0x20) == 0x00)
{
ch = (char)(ch | 0x40);
}
result.Append(ch);
}
return(result.ToString());
}
public static string Bit7Extract(byte[] data)
{
BitExtract extract = new BitExtract(data);
StringBuilder result = new StringBuilder();
while (true)
{
List <bool> bits = extract.GetBits(7);
if (bits.Count < 7)
{
break;
}
char ch = (char)BitExtract.ToByte(bits, 7);
// 正好末尾是 7 bits 1111111，需要丢弃
// TODO: 注意测试这种情况
if (extract.Count == 0 && ch == 0x7f)
{
break;
}
result.Append(ch);
}
return(result.ToString());
}
public static string Bit5Extract(byte[] data)
{
BitExtract extract = new BitExtract(data);
StringBuilder result = new StringBuilder();
while (true)
{
List <bool> bits = extract.GetBits(5);
if (bits.Count < 5)
{
break;
}
if (BitExtract.IsZero(bits))
{
break;
}
char ch = (char)(BitExtract.ToByte(bits, 5) | 0x40);
result.Append(ch);
}
return(result.ToString());
}