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Move MFTSearch to find file plugin.

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qianlifeng
2014-10-27 14:53:44 +08:00
parent c3ecf2d84e
commit 970c9e70e4
13 changed files with 15 additions and 11 deletions
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132
Plugins/Wox.Plugin.FindFile/MFTSearch/MFTSearcherCache.cs Normal file
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using System;
using System.Collections.Generic;
using System.Linq;
namespace Wox.Infrastructure.MFTSearch
{
internal class MFTSearcherCache
{
private Dictionary<string, Dictionary<ulong, USNRecord>> _volumes_files = new Dictionary<string, Dictionary<ulong, USNRecord>>();
private Dictionary<string, Dictionary<ulong, USNRecord>> _volumes_folders = new Dictionary<string, Dictionary<ulong, USNRecord>>();
public MFTSearcherCache() { }
public bool ContainsVolume(string volume)
{
return _volumes_files.ContainsKey(volume) && _volumes_folders.ContainsKey(volume);
}
public void AddRecord(string volume, List<USNRecord> r, USNRecordType type)
{
if (type == USNRecordType.File)
{
CheckHashTableKey(_volumes_files, volume);
r.ForEach(x => _volumes_files[volume].Add(x.FRN, x));
}
else
{
CheckHashTableKey(_volumes_folders, volume);
r.ForEach(x => _volumes_folders[volume].Add(x.FRN, x));
}
}
public void AddRecord(string volume, USNRecord record, USNRecordType type)
{
if (type == USNRecordType.File)
{
CheckHashTableKey(_volumes_files, volume);
_volumes_files[volume].Add(record.FRN, record);
}
else
{
CheckHashTableKey(_volumes_folders, volume);
_volumes_folders[volume].Add(record.FRN, record);
}
}
private void CheckHashTableKey(Dictionary<string, Dictionary<ulong, USNRecord>> hashtable, string key)
{
if (!hashtable.ContainsKey(key))
hashtable.Add(key, new Dictionary<ulong, USNRecord>());
}
public bool DeleteRecord(string volume, ulong frn)
{
bool result = false;
result = DeleteRecordHashTableItem(_volumes_files, volume, frn);
if (!result) result = DeleteRecordHashTableItem(_volumes_folders, volume, frn);
return result;
}
private bool DeleteRecordHashTableItem(Dictionary<string, Dictionary<ulong, USNRecord>> hashtable, string volume, ulong frn)
{
if (hashtable.ContainsKey(volume) && hashtable[volume].ContainsKey(frn))
{
hashtable[volume].Remove(frn);
return true;
}
else
{
return false;
}
}
public void UpdateRecord(string volume, USNRecord record, USNRecordType type)
{
if (type == USNRecordType.File)
RealUpdateRecord(volume, _volumes_files, record);
else
RealUpdateRecord(volume, _volumes_folders, record);
}
private bool RealUpdateRecord(string volume, Dictionary<string, Dictionary<ulong, USNRecord>> source, USNRecord record)
{
if (source.ContainsKey(volume) && source[volume].ContainsKey(record.FRN))
{
source[volume][record.FRN] = record;
return true;
}
else
{
return false;
}
}
public List<USNRecord> FindByName(string filename)
{
filename = filename.ToLower();
var fileQuery = from filesInVolumeDic in _volumes_files.Values
from eachFilePair in filesInVolumeDic
where eachFilePair.Value.Name.ToLower().Contains(filename)
select eachFilePair.Value;
var folderQuery = from fldsInVolumeDic in _volumes_folders.Values
from eachFldPair in fldsInVolumeDic
where eachFldPair.Value.Name.ToLower().Contains(filename)
select eachFldPair.Value;
List<USNRecord> result = new List<USNRecord>();
result.AddRange(fileQuery);
result.AddRange(folderQuery);
return result;
}
public USNRecord FindByFrn(string volume, ulong frn)
{
if ((!_volumes_files.ContainsKey(volume)) || (!_volumes_folders.ContainsKey(volume)))
throw new Exception(string.Format("DB not contain the volume: {0}", volume));
USNRecord result = null;
_volumes_files[volume].TryGetValue(frn, out result);
if (result != null) return result;
_volumes_folders[volume].TryGetValue(frn, out result);
return result;
}
public long FileCount
{
get { return _volumes_files.Sum(x => x.Value.Count); }
}
public long FolderCount
{
get { return _volumes_folders.Sum(x => x.Value.Count); }
}
public Dictionary<ulong, USNRecord> GetFolderSource(string volume)
{
Dictionary<ulong, USNRecord> result = null;
_volumes_folders.TryGetValue(volume, out result);
return result;
}
}
}