public void addAsset(AssetEntry assetEntry)
{
if (assets.ContainsKey(assetEntry.strID))
{
throw new Exception(
"Asset key [" + assetEntry + "] already exists in db[" + assets[assetEntry.strID] + "]");
}
assets[assetEntry.strID] = assetEntry;
}
public void AddAsset(AssetEntry assetEntry)
{
if (assets.ContainsKey(assetEntry.StringId))
{
throw new Exception(
"Asset key [" + assetEntry + "] already exists in db[" + assets[assetEntry.StringId] + "]");
}
assets[assetEntry.StringId] = assetEntry;
}
private byte[] extractPart(AssetEntry ae, int size)
{
AssetFile af = ae.File;
if (af != ae.File)
{
throw new Exception("Incorrect af found for asset[" + ae + "]");
}
return(af.extractPart(ae, size, null, false));
}
//static AssetCache cache = AssetCache.inst;
/**
* Attempt to extract the given assetentry into a byte array. Because the content may be compressed the returned byte array
* may be larger than the requested max bytes.
*
* @param entry The entry to read
* @param maxBytesToRead The maximum bytes to read from the source
* @return The bytes read, may be larger than requested if the data is compressed
*/
public byte[] extractPart(AssetEntry entry, int maxBytesToRead, Stream os,
bool nodecomp)
{
if (entry.file != this)
{
throw new Exception(
"Extract called on wrong asset file[" + file + "] for asset:" + entry);
}
byte [] data = extractPart1(entry, maxBytesToRead, nodecomp);
if (os != null)
{
os.Write(data, 0, data.Length);
}
return(data);
}
private AssetFile getAssetFile(AssetEntry ae)
{
return(ae.File);
}
private void extract(AssetEntry ae, Stream fos)
{
byte[] data = extract(ae);
fos.Write(data, 0, data.Length);
fos.Flush();
}
internal string getHash(string v)
{
AssetEntry ae = getEntryForFileName(v);
return(BitConverter.ToString(ae.Hash));
}
/** Attempt to extract the asset with the given filename */
/*
* public void extractToFilename( String filename, String outputfilename)
* {
* try
* {
* using (FileStream fos = new FileStream(outputfilename, FileMode.Truncate))
* {
* using (BufferedStream bi = new BufferedStream(fos))
* {
* byte[] data = extract(getEntryForFileName(filename));
* bi.Write(data, 0, data.Length);
* }
* }
* } catch (Exception e)
* {
* Console.WriteLine(e);
* }
* }
*/
private byte[] extract(AssetEntry ae)
{
return(ae.File.extract(ae));
}
private byte[] extractPart1(AssetEntry entry, int maxBytesToRead, bool nodecomp)
{
try
{
if (nodecomp || !entry.compressed)
{
using (FileStream stream = new FileStream(file, FileMode.Open, FileAccess.Read, FileShare.Read))
{
// if not compressed
byte[] data = new byte[maxBytesToRead];
stream.Seek(entry.offset, SeekOrigin.Begin);
long bytesRead = stream.Read(data, 0, maxBytesToRead);
if (entry.size >= maxBytesToRead && bytesRead != maxBytesToRead)
{
throw new Exception("Not enough bytes read, expected [" + maxBytesToRead + "], got: " + bytesRead);
}
return(data);
}
}
else
{
// COMPRESSED
// NOTE: entry.size doesn't indicate the size of the uncompressed data
// Check if we want to read all the data or only a little
bool readAll = maxBytesToRead >= entry.size;
using (FileStream stream = new FileStream(file, FileMode.Open, FileAccess.Read, FileShare.Read))
{
long pos = stream.Seek(entry.offset, SeekOrigin.Begin);
lock (unzipLock)
{
// Debug.Log("extract asset:" + entry);
//Debug.Log("decompress asset:" + entry.strID + ", size:" + entry.size + ", sizeD:" + entry.sizeD);
if (unzipCache.Length < entry.sizeD)
{
//Debug.Log("Increasing unzip cache size from " + unzipCache.Length + " to " + entry.sizeD);
unzipCache = new byte[entry.sizeD];
}
int writeIndex = 0;
using (ZlibStream ds = new ZlibStream(stream, Ionic.Zlib.CompressionMode.Decompress))
{
int numRead;
while ((numRead = ds.Read(unzipCache, writeIndex, unzipCache.Length - writeIndex)) > 0)
{
//Debug.Log("read " + numRead + " into array at " + writeIndex + ", we tried to read " + (unzipCache.Length - writeIndex) + " bytes");
writeIndex += numRead;
if (!readAll && writeIndex >= maxBytesToRead)
{
break;
}
}
//if (writeIndex != entry.sizeD)
// Debug.LogWarning("expected to read " + entry.sizeD + " bytes, but only got " + writeIndex);
/*
* //Copy the decompression stream into the output file.
* byte[] buffer = new byte[4096];
* while ((numRead = ds.Read(buffer, 0, buffer.Length)) > 0)
* {
* totalRead += numRead;
* if (!readAll && totalRead >= maxBytesToRead)
* break;
* decompressed.Write(buffer, 0, numRead);
*
* }
*/
byte[] outData = new byte[writeIndex];
Array.Copy(unzipCache, outData, outData.Length);
return(outData);
}
}
}
}
}
catch (Exception ex)
{
throw new Exception("failure in file " + file + ", @ " + entry.offset + ", id:"
+ entry.strID + ", compressed?" + entry.compressed + ", filesize:" + entry.size + "\n\t",
ex);
}
}
public byte[] extractNoDecomp(AssetEntry entry)
{
return(extractPart(entry, entry.size, null, true));
}
public void extract(AssetEntry entry, Stream fos)
{
extractPart(entry, entry.size, fos, false);
}
/** Attempt to extract the given assetentry into a byte array */
public byte[] extract(AssetEntry entry)
{
return(extractPart(entry, entry.size, null, false));
}