public bool StoreBlob(byte[] data, BlobKey outKey)
{
BlobKey newKey = KeyForBlob(data);
outKey.SetBytes(newKey.GetBytes());
string path = PathForKey(outKey);
FilePath file = new FilePath(path);
if (file.CanRead())
{
return true;
}
FileOutputStream fos = null;
try
{
fos = new FileOutputStream(file);
fos.Write(data);
}
catch (FileNotFoundException e)
{
Log.E(Database.Tag, "Error opening file for output", e);
return false;
}
catch (IOException ioe)
{
Log.E(Database.Tag, "Error writing to file", ioe);
return false;
}
finally
{
if (fos != null)
{
try
{
fos.Close();
}
catch (IOException)
{
}
}
}
// ignore
return true;
}
public bool IsGZipped(BlobKey key)
{
var magic = 0;
var path = PathForKey(key);
var file = new FilePath(path);
if (file.CanRead())
{
try
{
var raf = new RandomAccessFile(file, "r");
magic = raf.Read() & unchecked((0xff)) | ((raf.Read() << 8) & unchecked((0xff00)));
raf.Close();
}
catch (Exception e)
{
Runtime.PrintStackTrace(e, Console.Error);
}
}
return magic == GZIPInputStream.GzipMagic;
}
public Stream BlobStreamForKey(BlobKey key)
{
var path = PathForKey(key);
Log.D(Database.Tag, "Blob Path : " + path);
var file = new FilePath(path);
if (file.CanRead())
{
try
{
return new FileStream(file, FileMode.Open, FileAccess.ReadWrite, FileShare.ReadWrite);
}
catch (FileNotFoundException e)
{
Log.E(Database.Tag, "Unexpected file not found in blob store", e);
return null;
}
catch (Exception e)
{
Log.E(Database.Tag, "Cannot new FileStream", e);
}
}
return null;
}
public bool StoreBlobStream(Stream inputStream, out BlobKey outKey)
{
FilePath tmp = null;
try
{
tmp = FilePath.CreateTempFile(TmpFilePrefix, TmpFileExtension, new FilePath(this.path));
FileOutputStream fos = new FileOutputStream(tmp);
byte[] buffer = new byte[65536];
int lenRead = ((InputStream)inputStream).Read(buffer);
while (lenRead > 0)
{
fos.Write(buffer, 0, lenRead);
lenRead = ((InputStream)inputStream).Read(buffer);
}
inputStream.Close();
fos.Close();
}
catch (IOException e)
{
Log.E(Database.Tag, "Error writing blog to tmp file", e);
outKey = null;
return false;
}
outKey = KeyForBlobFromFile(tmp);
var keyPath = PathForKey(outKey);
var file = new FilePath(keyPath);
if (file.CanRead())
{
// object with this hash already exists, we should delete tmp file and return true
tmp.Delete();
}
else
{
// does not exist, we should rename tmp file to this name
tmp.RenameTo(file);
}
return true;
}
public virtual bool IsGZipped(BlobKey key)
{
int magic = 0;
string path = PathForKey(key);
FilePath file = new FilePath(path);
if (file.CanRead())
{
try
{
RandomAccessFile raf = new RandomAccessFile(file, "r");
magic = raf.Read() & unchecked((int)(0xff)) | ((raf.Read() << 8) & unchecked((int
)(0xff00)));
raf.Close();
}
catch (Exception e)
{
Sharpen.Runtime.PrintStackTrace(e, System.Console.Error);
}
}
return magic == GZIPInputStream.GzipMagic;
}
public virtual InputStream BlobStreamForKey(BlobKey key)
{
string path = PathForKey(key);
FilePath file = new FilePath(path);
if (file.CanRead())
{
try
{
return new FileInputStream(file);
}
catch (FileNotFoundException e)
{
Log.E(Log.TagBlobStore, "Unexpected file not found in blob store", e);
return null;
}
}
return null;
}
public bool IsGZipped(BlobKey key)
{
var magic = 0;
var path = PathForKey(key);
var file = new FilePath(path);
if (file.CanRead()) {
try {
var raf = new FileStream (file, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
magic = raf.ReadByte() & unchecked((0xff)) | ((raf.ReadByte() << 8) & unchecked((0xff00)));
raf.Close();
}
catch (Exception e) {
Runtime.PrintStackTrace(e, Console.Error);
}
}
return magic == 0;
}
/// <exception cref="System.IO.IOException"></exception>
private static string ReadUrl(string filePath, string charCoding, bool urlIsFile)
{
int chunkLength;
Stream @is = null;
try
{
if (!urlIsFile)
{
Uri urlObj = new Uri(filePath);
URLConnection uc = urlObj.OpenConnection();
@is = uc.GetInputStream();
chunkLength = uc.GetContentLength();
if (chunkLength <= 0)
{
chunkLength = 1024;
}
if (charCoding == null)
{
string type = uc.GetContentType();
if (type != null)
{
charCoding = GetCharCodingFromType(type);
}
}
}
else
{
FilePath f = new FilePath(filePath);
if (!f.Exists())
{
throw new FileNotFoundException("File not found: " + filePath);
}
else
{
if (!f.CanRead())
{
throw new IOException("Cannot read file: " + filePath);
}
}
long length = f.Length();
chunkLength = (int)length;
if (chunkLength != length)
{
throw new IOException("Too big file size: " + length);
}
if (chunkLength == 0)
{
return string.Empty;
}
@is = new FileInputStream(f);
}
TextReader r;
if (charCoding == null)
{
r = new StreamReader(@is);
}
else
{
r = new StreamReader(@is, charCoding);
}
return ReadReader(r, chunkLength);
}
finally
{
if (@is != null)
{
@is.Close();
}
}
}
public Stream BlobStreamForKey(BlobKey key)
{
var path = PathForKey(key);
var file = new FilePath(path);
if (file.CanRead())
{
try
{
#if PORTABLE
return File.OpenStream(file, false);
#else
return new FileStream(file, FileMode.Open);
#endif
}
catch (FileNotFoundException e)
{
Log.E(Database.Tag, "Unexpected file not found in blob store", e);
return null;
}
}
return null;
}