private static void OpenDataBase(string databasename)
{
lock (_eventStore)
if (!_eventStore.ContainsKey(databasename))
{
var filename = Path.Combine(Path.Combine(Configuration.BasePath, databasename), "denso.trn");
long eventcommandsn = 0;
#if WINDOWS_PHONE
if (iss.FileExists(filename))
{
using (var fs = iss.OpenFile(Path.Combine(Path.Combine(Configuration.BasePath, databasename), "denso.trn"), FileMode.Open, FileAccess.Read))
#else
if (File.Exists(filename))
using (var fs = File.Open(Path.Combine(Path.Combine(Configuration.BasePath, databasename), "denso.trn"), FileMode.Open, FileAccess.Read, FileShare.Read))
#endif
if (fs.Length > 0)
{
using (var br = new BinaryReader(fs))
eventcommandsn = br.ReadInt64();
}
}
_eventStore.Add(databasename, new EventStore(databasename, eventcommandsn));
}
}
private string ReadFile(string filename)
{
try
{
// Obtain a virtual store for the application.
System.IO.IsolatedStorage.IsolatedStorageFile local =
System.IO.IsolatedStorage.IsolatedStorageFile.GetUserStoreForApplication();
if (local.FileExists("DataFolder\\" + filename))
{
// Specify the file path and options.
using (var isoFileStream = new System.IO.IsolatedStorage.IsolatedStorageFileStream
("DataFolder\\" + filename, System.IO.FileMode.Open, local))
{
// Read the data.
using (var isoFileReader = new System.IO.StreamReader(isoFileStream))
{
return(isoFileReader.ReadLine());
}
}
}
else
{
return(null);
}
}
catch { return(null); }
}
public void DeleteRemovesFileFromStorage()
{
var file = new IsolatedStorageFile("~/exists.js", storage, directory);
file.Delete();
storage.FileExists("exists.js").ShouldBeFalse();
}
internal static bool FileExists(string dbpath, string typeName, bool useElevatedTrust)
{
string extension = ".sqo";
if (SiaqodbConfigurator.EncryptedDatabase)
{
extension = ".esqo";
}
string fileName = dbpath + Path.DirectorySeparatorChar + typeName + extension;
#if SILVERLIGHT
if (!useElevatedTrust)
{
System.IO.IsolatedStorage.IsolatedStorageFile isf = System.IO.IsolatedStorage.IsolatedStorageFile.GetUserStoreForApplication();
return(isf.FileExists(fileName));
}
else
{
return(File.Exists(fileName));
}
#elif MONODROID
return(File.Exists(fileName));
#else
return(File.Exists(fileName));
#endif
}
public void DeleteIndex()
{
System.IO.IsolatedStorage.IsolatedStorageFile local = System.IO.IsolatedStorage.IsolatedStorageFile.GetUserStoreForApplication();
if (local.FileExists("IndicesFolder\\Index.txt"))
{
local.DeleteFile("IndicesFolder\\Index.txt");
}
}
void PhotoTask_Completed(object sender, PhotoResult e)
{
if (e.TaskResult == TaskResult.OK && e.ChosenPhoto != null)
{
System.Windows.Media.Imaging.WriteableBitmap bmp = Microsoft.Phone.PictureDecoder.DecodeJpeg(e.ChosenPhoto);
System.IO.IsolatedStorage.IsolatedStorageFile isf = System.IO.IsolatedStorage.IsolatedStorageFile.GetUserStoreForApplication();
if (isf.FileExists("back_temp.jpg"))
{
isf.DeleteFile("back_temp.jpg");
}
System.IO.IsolatedStorage.IsolatedStorageFileStream PhotoStream = isf.CreateFile("back_temp.jpg");
System.Windows.Media.Imaging.Extensions.SaveJpeg(bmp, PhotoStream, 1024, 768, 0, 100); //这里设置保存后图片的大小、品质
PhotoStream.Close(); //写入完毕，关闭文件流
}
}
private void Bcakground_Click(object sender, RoutedEventArgs e)
{
if ((bool)checkBoxSetting.IsChecked)
{
takePhote();
NavigationService.GoBack();
}
else
{
System.IO.IsolatedStorage.IsolatedStorageFile isf = System.IO.IsolatedStorage.IsolatedStorageFile.GetUserStoreForApplication();
if (isf.FileExists("back_temp.jpg"))
{
isf.DeleteFile("back_temp.jpg");
}
}
}
internal void ShrinkToSN(long commandsn)
{
LogWriter.LogInformation("File Shrink requested", LogEntryType.Warning);
//return;
CloseFile();
lock (_filelock)
{
#if WINDOWS_PHONE
if (iss.FileExists(FileName))
{
using (var readerfs = iss.OpenFile(FileName, FileMode.Open, FileAccess.Read, FileShare.Write))
using (var writerfs = iss.OpenFile(FileName, FileMode.Open, FileAccess.Write, FileShare.Read))
#else
if (File.Exists(FileName))
using (var readerfs = File.Open(FileName, FileMode.Open, FileAccess.Read, FileShare.Write))
using (var writerfs = File.Open(FileName, FileMode.Open, FileAccess.Write, FileShare.Read))
#endif
using (var br = new BinaryReader(readerfs))
using (var bw = new BinaryWriter(writerfs))
{
LogWriter.LogInformation("Compressing file", LogEntryType.Information);
while (readerfs.Position < readerfs.Length)
{
var cmd = ReadCommand(br);
if (cmd != null)
{
if (cmd.CommandSN > commandsn)
{
WriteCommand(bw, cmd);
}
}
}
LogWriter.LogInformation("File shrink completed", LogEntryType.SuccessAudit);
readerfs.Close();
writerfs.Flush();
LogWriter.LogInformation("Free empty space", LogEntryType.SuccessAudit);
writerfs.SetLength(writerfs.Position);
writerfs.Close();
LogWriter.LogInformation("Shringk completed", LogEntryType.SuccessAudit);
}
}
}
}
public bool LoadIndex()
{
System.IO.IsolatedStorage.IsolatedStorageFile local = System.IO.IsolatedStorage.IsolatedStorageFile.GetUserStoreForApplication();
var newIndex = new Dictionary <string, FileTextBlock>();
if (!local.FileExists("IndicesFolder\\Index.txt"))
{
return(false);
}
using (var isoFileStream = new System.IO.IsolatedStorage.IsolatedStorageFileStream("IndicesFolder\\Index.txt", System.IO.FileMode.Open, local))
{
using (var isoFileReader = new System.IO.StreamReader(isoFileStream))
{
var line = isoFileReader.ReadLine();
while (!isoFileReader.EndOfStream)
{
if (!string.IsNullOrEmpty(line))
{
var firstSpace = line.IndexOf(" ", line.IndexOf("]]"));
if (firstSpace > 0)
{
var secondSpace = line.IndexOf(" ", firstSpace + 1);
var wordKey = line.Substring(2, line.IndexOf("]]") - 2);
var startsAt = long.Parse(line.Substring(firstSpace + 1, secondSpace - firstSpace).Trim(' '));
var length = int.Parse(line.Substring(secondSpace + 1).Trim(' '));
newIndex.Add(wordKey, new FileTextBlock()
{
Length = length, StartsAtByte = startsAt
});
}
}
line = isoFileReader.ReadLine();
}
}
}
Index = newIndex;
return(true);
}
public bool FileExists(string path)
{
return(file.FileExists(path));
}