///
/// <summary>
/// Constructor of compressed file
/// </summary>
/// <param name="dataFilePath">path to the data file</param>
/// <param name="cipherKey">cipher key (if null, then no encryption is performed)</param>
/// <param name="indexFilePath">path to the index file</param>
/// <param name="parameters">file parameters</param>
///
public CompressedFile(string dataFilePath,
string cipherKey,
string indexFilePath,
FileParameters parameters)
: base(dataFilePath, parameters)
{
indexFile = new OSFile(indexFilePath, parameters);
if (cipherKey != null)
{
setKey(Encoding.Unicode.GetBytes(cipherKey));
}
if (!parameters.readOnly)
{
bitmapExtensionQuantum = (int)(parameters.fileExtensionQuantum >> (ALLOCATION_QUANTUM_LOG + 3));
bitmap = new byte[(int)(base.Length >> (ALLOCATION_QUANTUM_LOG + 3)) + bitmapExtensionQuantum];
bitmapPos = bitmapStart = Page.pageSize >> (ALLOCATION_QUANTUM_LOG + 3);
pageMap = new PageMap();
byte[] buf = new byte[8];
for (long indexPos = 0, indexSize = indexFile.Length; indexPos < indexSize; indexPos += 8)
{
indexFile.Read(indexPos, buf);
long pagePos = Bytes.unpack8(buf, 0);
long pageBitOffs = pagePos >> (Page.pageSizeLog + ALLOCATION_QUANTUM_LOG);
long pageBitSize = ((pagePos & (Page.pageSize - 1)) + ALLOCATION_QUANTUM) >> ALLOCATION_QUANTUM_LOG;
Bitmap.reserve(bitmap, pageBitOffs, pageBitSize);
}
}
}
public MultiFile(String filePath, FileParameters parameters)
{
#if WINRT_NET_FRAMEWORK
System.Threading.Tasks.Task<Stream> t = ApplicationData.Current.LocalFolder.OpenStreamForReadAsync(filePath);
t.Wait();
StreamReader reader = new StreamReader(t.Result);
#else
StreamReader reader = new StreamReader(filePath);
#endif
this.parameters = parameters;
segment = new MultiFileSegment[0];
string line;
while ((line = reader.ReadLine()) != null)
{
int sepPos;
MultiFileSegment seg = new MultiFileSegment();
string path;
if (line.StartsWith("\""))
{
sepPos = line.IndexOf('"', 1);
path = line.Substring(1, sepPos-1);
}
else
{
sepPos = line.IndexOf(' ');
path = sepPos < 0 ? line : line.Substring(0, sepPos);
}
if (sepPos >= 0 && sepPos+1 < line.Length) {
String fileLength = line.Substring(sepPos+1).Trim();
if (fileLength.Length > 0)
{
seg.size = long.Parse(fileLength)*1024; // kilobytes
}
}
fixedSize += seg.size;
seg.f = new OSFile(path, parameters);
MultiFileSegment[] newSegment = new MultiFileSegment[segment.Length+1];
Array.Copy(segment, 0, newSegment, 0, segment.Length);
newSegment[segment.Length] = seg;
segment = newSegment;
}
fixedSize -= segment[segment.Length-1].size;
segment[segment.Length-1].size = long.MaxValue;
}
public MultiFile(String[] segmentPath, long[] segmentSize, FileParameters parameters)
{
this.parameters = parameters;
segment = new MultiFileSegment[segmentPath.Length];
for (int i = 0; i < segment.Length; i++)
{
MultiFileSegment seg = new MultiFileSegment();
seg.f = new OSFile(segmentPath[i], parameters);
seg.size = segmentSize[i];
fixedSize += seg.size;
segment[i] = seg;
}
fixedSize -= segment[segment.Length-1].size;
segment[segment.Length-1].size = long.MaxValue;
}
///
/// <summary>
/// Constructor of compressed file
/// </summary>
/// <param name="dataFilePath">path to the data file</param>
/// <param name="cipherKey">cipher key (if null, then no encryption is performed)</param>
/// <param name="indexFilePath">path to the index file</param>
/// <param name="parameters">file parameters</param>
///
public CompressedFile(string dataFilePath,
string cipherKey,
string indexFilePath,
FileParameters parameters)
: base(dataFilePath, parameters)
{
indexFile = new OSFile(indexFilePath, parameters);
if (cipherKey != null)
{
setKey(Encoding.Unicode.GetBytes(cipherKey));
}
if (!parameters.readOnly)
{
bitmapExtensionQuantum = (int)(parameters.fileExtensionQuantum >> (ALLOCATION_QUANTUM_LOG + 3));
bitmap = new byte[(int)(base.Length >> (ALLOCATION_QUANTUM_LOG + 3)) + bitmapExtensionQuantum];
bitmapPos = bitmapStart = Page.pageSize >> (ALLOCATION_QUANTUM_LOG + 3);
pageMap = new PageMap();
byte[] buf = new byte[8];
for (long indexPos = 0, indexSize = indexFile.Length; indexPos < indexSize; indexPos += 8)
{
indexFile.Read(indexPos, buf);
long pagePos = Bytes.unpack8(buf, 0);
long pageBitOffs = pagePos >> (Page.pageSizeLog + ALLOCATION_QUANTUM_LOG);
long pageBitSize = ((pagePos & (Page.pageSize - 1)) + ALLOCATION_QUANTUM) >> ALLOCATION_QUANTUM_LOG;
Bitmap.reserve(bitmap, pageBitOffs, pageBitSize);
}
}
}
