/// <summary>
/// Collects not empty info for each record at the record's time.
/// </summary>
public IEnumerable<Info> CollectOpenInfo()
{
var result = new List<Info>();
for (int iRecord = 0; iRecord < _records.Count; ++iRecord)
{
var record = _records[iRecord];
// init info
var info = new Info() { Path = record.Path };
// get the rest
CollectFileInfo(info, iRecord + 1, record.Time);
if (info.Idle.TotalHours < Settings.Default.Limit0)
continue;
// return not empty
if (info.UseCount > 0)
result.Add(info);
}
SetEvidences(result, CollectEvidences());
return result;
}
/// <summary>
/// Collects info for a file.
/// </summary>
void CollectFileInfo(Info info, int start, DateTime now)
{
for (int iRecord = start; iRecord < _records.Count; ++iRecord)
{
// skip data from the future
var record = _records[iRecord];
if (record.Time > now)
continue;
// skip alien
if (!record.Path.Equals(info.Path, StringComparison.OrdinalIgnoreCase))
continue;
// count cases, init if not yet
if (++info.UseCount == 1)
{
info.Head = record.Time;
info.Tail = record.Time;
info.Idle = now - record.Time;
info.KeyCount = record.Keys;
info.DayCount = 1;
continue;
}
// sum keys
info.KeyCount += record.Keys;
// different days
if (info.Head.Date != record.Time.Date)
{
++info.DayCount;
// Why 2 is the best for all records so far, 3..4 are so so, and 5 is bad?
// NB
// Factor 4 gives values 0..4 (max is used); factors 5..6 still give 0..4 (max is not used).
// Should we just use 4 or should we dig the max factor value M which gives values 0..M?
// NB
// With 2 and Idle > X Activity is rare/never actually equal to 2.
if ((now - record.Time).TotalDays < 2)
++info.Activity;
}
// now save the record time
info.Head = record.Time;
}
}
/// <summary>
/// Collects the unordered history info.
/// </summary>
public IList<Info> CollectInfo(DateTime now, bool reduced)
{
var result = new List<Info>();
var set = new HashSet<string>(StringComparer.OrdinalIgnoreCase);
for (int iRecord = 0; iRecord < _records.Count; ++iRecord)
{
// skip data from the future
var record = _records[iRecord];
if (record.Time > now)
continue;
// add, skip existing
if (!set.Add(record.Path))
continue;
// skip recent and too old
var idle = now - record.Time;
if (reduced && (idle.TotalHours < Settings.Default.Limit0 || record.What == Record.AGED))
continue;
// init info
var info = new Info()
{
Path = record.Path,
Head = record.Time,
Tail = record.Time,
Idle = idle,
KeyCount = record.Keys,
DayCount = 1,
UseCount = 1,
};
// get the rest
CollectFileInfo(info, iRecord + 1, now);
result.Add(info);
}
return result;
}