/// <summary>
/// 读取某个变量在头部文件种的序号
/// </summary>
/// <param name="datafile"></param>
/// <param name="tid"></param>
/// <param name="offset"></param>
/// <param name="fileDuration"></param>
/// <param name="blockDuration"></param>
/// <param name="timetick"></param>
/// <returns></returns>
public static int ReadTagIndexInDataPointer(this DataFileSeriserbase datafile, int tid, long offset, out int tagCount, out int fileDuration, out int blockDuration, out int timetick, out long blockpointer, out DateTime time)
{
var hfile = datafile.CheckBlockHeadCach(offset, out tagCount, out fileDuration, out blockDuration, out timetick, out blockpointer, out time);
if (hfile.ContainsKey(tid))
{
return(hfile[tid]);
}
return(-1);
}
/// <summary>
/// 读取数据区域的数据头数据
/// </summary>
/// <param name="datafile"></param>
/// <param name="tid"></param>
/// <param name="offset"></param>
/// <param name="fileDuration"></param>
/// <param name="blockDuration"></param>
/// <param name="timetick"></param>
/// <returns></returns>
public static List <long> ReadTargetBlockAddress(this DataFileSeriserbase datafile, List <int> tid, long offset, out int tagCount, out int fileDuration, out int blockDuration, out int timetick, out long blockpointer, out DateTime time)
{
var hfile = datafile.CheckBlockHeadCach(offset, out tagCount, out fileDuration, out blockDuration, out timetick, out blockpointer, out time);
List <long> re = new List <long>();
foreach (var vv in tid)
{
if (hfile.ContainsKey(vv))
{
re.Add(hfile[vv]);
}
else
{
re.Add(-1);
}
}
return(re);
}
