/// <summary>
/// 读取数据的包头,将数据解析成分段数据
/// </summary>
/// <param name="datas"></param>
/// <returns></returns>
public static List <EnvelopePart> EnvlopeDataToPart(List <EnvelopeData> datas)
{
if (datas == null)
{
return(null);
}
int c = datas.Count;
List <EnvelopePart> parts = new List <EnvelopePart>();
for (int i = 0; i < c; i++)
{
var dat = datas[i].data;
if (dat.Length == 0)
{
continue;
}
EnvelopePart part = new EnvelopePart();
var buf = ReadPart(dat, out part.head);
if (buf != null)
{
part.data = buf;
parts.Add(part);
}
}
return(parts);
}
/// <summary>
///
/// </summary>
/// <param name="buff">源数据</param>
/// <param name="len">数据长度</param>
/// <param name="buffer">缓存数据</param>
/// <param name="remain"></param>
/// <param name="fs"></param>
/// <returns></returns>
public static List <EnvelopePart> UnpackPart(byte[] buff, int len, byte[] buffer, ref int remain, int fs)
{
fs -= EnvelopeHeadSize;
List <EnvelopePart> list = new List <EnvelopePart>();
int s = remain;
for (int i = 0; i < len; i++)
{
buffer[s] = buff[i];
s++;
}
len += remain;
int index = 0;
for (int i = 0; i < 1024; i++)
{
EnvelopeHead head = ReadHead(buffer, index);
if (head.PartLen > fs)
{
remain = 0;
break;
}
if (index + EnvelopeHeadSize + head.PartLen > len)
{
remain = len - index;
for (int j = 0; j < len; j++)
{
buffer[j] = buffer[index];
index++;
}
return(list);
}
index += EnvelopeHeadSize;
if (head.Lenth > 2)
{
EnvelopePart part = new EnvelopePart();
part.head = head;
int l = (int)head.PartLen;
var buf = new byte[l];
int a = index;
for (int j = 0; j < l; j++)
{
buf[j] = buffer[a]; a++;
}
part.data = buf;
list.Add(part);
}
index += head.PartLen;
if (index >= len)
{
remain = 0;
break;
}
}
return(list);
}
/// <summary>
/// 读取数据的包头,将数据解析成分段数据
/// </summary>
/// <param name="datas"></param>
/// <returns></returns>
public static List <EnvelopePart> EnvlopeDataToPart(List <byte[]> datas)
{
if (datas == null)
{
return(null);
}
int c = datas.Count;
List <EnvelopePart> parts = new List <EnvelopePart>();
for (int i = 0; i < c; i++)
{
EnvelopePart part = new EnvelopePart();
var buf = ReadPart(datas[i], out part.head);
if (buf != null)
{
part.data = buf;
parts.Add(part);
}
}
return(parts);
}