/// <summary>
/// 写数据
/// </summary>
/// <param name="data">数据</param>
/// <param name="index">起始位置</param>
/// <param name="count">写入字节数</param>
public void Write(byte[] data, int index, int count)
{
var range = new ArrayPlus.RangeStruct(data.Length, index, count);
if (range.GetCount == count)
{
PrepLength(count);
fixed (byte* dataFixed = data)
{
MemoryUnsafe.Copy(dataFixed + range.SkipCount, Data + Length, count);
}
LengthBase += count;
}
else if (count != 0) LogPlus.Error.Throw(LogPlus.ExceptionTypeEnum.IndexOutOfRange);
}
/// <summary>
/// 写字符串
/// </summary>
/// <param name="value">字符串</param>
/// <param name="index">起始位置</param>
/// <param name="count">写入字符数</param>
public void WriteBase(string value, int index, int count)
{
var range = new ArrayPlus.RangeStruct(value.Length, index, count);
if (range.GetCount == count)
{
PrepLengthBase(count <<= 1);
fixed (char* valueFixed = value)
{
MemoryUnsafe.Copy(valueFixed + index, Data + LengthBase, count);
}
LengthBase += count;
}
else if (count != 0) LogPlus.Error.Throw(LogPlus.ExceptionTypeEnum.IndexOutOfRange);
}
/// <summary>
/// 转换成字节数组
/// </summary>
/// <param name="index">起始位置</param>
/// <param name="count">字节数</param>
/// <returns>字节数组</returns>
public byte[] GetArray(int index, int count)
{
var range = new ArrayPlus.RangeStruct(Length, index, count);
if (count == range.GetCount)
{
var data = new byte[count];
MemoryUnsafe.Copy(Data + index, data, count);
return data;
}
if (count == 0) return null;
LogPlus.Default.Throw(LogPlus.ExceptionTypeEnum.IndexOutOfRange);
return null;
}
/// <summary>
/// 分割字符串
/// </summary>
/// <param name="value">原字符串</param>
/// <param name="startIndex">起始位置</param>
/// <param name="length">分割字符串长度</param>
/// <param name="split">分割符</param>
/// <returns>字符子串集合</returns>
public static SubArrayStruct<SubStringStruct> Split(this string value, int startIndex, int length, char split)
{
var range = new ArrayPlus.RangeStruct(value.Length(), startIndex, length);
if (range.GetCount != length) LogPlus.Error.Throw(LogPlus.ExceptionTypeEnum.IndexOutOfRange);
var values = default(SubArrayStruct<SubStringStruct>);
if (value != null)
{
fixed (char* valueFixed = value)
{
char* last = valueFixed + range.SkipCount, end = last + range.GetCount;
for (var start = last; start != end;)
{
if (*start == split)
{
values.Add(SubStringStruct.Unsafe(value, (int) (last - valueFixed), (int) (start - last)));
last = ++start;
}
else ++start;
}
values.Add(SubStringStruct.Unsafe(value, (int) (last - valueFixed), (int) (end - last)));
}
}
return values;
}
