/// <summary>
/// 查找指定资源包中的指定资源文件并返回为Byte[]
/// </summary>
///
/// <param name="fileName"></param>
/// <param name="resName"></param>
/// <returns></returns>
public static byte[] OpenResource(string fileName, string resName)
{
Stream ins0 = null;
DataInputStream dis = null;
try
{
ins0 = Resources.OpenStream(fileName);
dis = new DataInputStream(ins0);
LPKHeader header = ReadHeader(dis);
LPKTable[] fileTable = ReadLPKTable(dis, (int)header.GetTables());
bool find = false;
int fileIndex = 0;
string innerName = null;
for (int i = 0; i < fileTable.Length; i++)
{
innerName = StringUtils.NewString(fileTable[i].GetFileName()).Trim();
if (innerName.Equals(resName, StringComparison.InvariantCultureIgnoreCase))
{
find = true;
fileIndex = i;
break;
}
}
if (find == false)
{
throw new Exception("File not found. ( " + fileName
+ " )");
}
else
{
return(ReadFileFromPak(dis, header, fileTable[fileIndex]));
}
}
catch (Exception ex)
{
Log.Exception(ex);
throw new Exception("File not found. ( " + fileName + " )");
}
finally
{
if (dis != null)
{
try
{
dis.Close();
dis = null;
}
catch (IOException ex)
{
Log.Exception(ex);
}
}
}
}
public static LPKHeader ReadHeader(ArrayByte dis)
{
LPKHeader header = new LPKHeader();
header.SetPAKIdentity(dis.ReadInt());
byte[] pass = dis.ReadByteArray(LPKHeader.LF_PASSWORD_LENGTH);
header.SetPassword(pass);
header.SetVersion(dis.ReadFloat());
header.SetTables(dis.ReadLong());
return(header);
}
/// <summary>
/// 返回LPK文件信息
/// </summary>
///
/// <param name="pakFilePath"></param>
/// <returns></returns>
/// <exception cref="System.Exception"></exception>
public static IList <object> GetLPKInfo(string resName)
{
Stream ins0 = Resources.OpenStream(resName);
DataInputStream dis = new DataInputStream(ins0);
LPKHeader header = ReadHeader(dis);
LPKTable[] fileTable = ReadLPKTable(dis, (int)header.GetTables());
List <object> result = new List <object>();
CollectionUtils.Add(result, header);
CollectionUtils.Add(result, fileTable);
return(result);
}
/// <summary>
/// 读取数据流
/// </summary>
///
/// <param name="dis"></param>
/// <param name="header"></param>
/// <param name="fileTable"></param>
/// <returns></returns>
/// <exception cref="System.Exception"></exception>
public static byte[] ReadFileFromPak(DataInputStream dis, LPKHeader header,
LPKTable fileTable)
{
dis.Skip(fileTable.GetOffSet() - OutputOffset(header));
int fileLength = (int)fileTable.GetFileSize();
byte[] fileBuff = new byte[fileLength];
int readLength = dis.Read(fileBuff, 0, fileLength);
if (readLength < fileLength)
{
return(null);
}
else
{
MakeBuffer(fileBuff, readLength);
return(fileBuff);
}
}
public static byte[] OpenResource(string fileName, string resName)
{
try {
PAK pak = (PAK)CollectionUtils.Get(pakRes, fileName);
Stream ins = Resources.OpenStream(fileName);
ArrayByte result = null;
if (CACHE)
{
if (cacheRes == null)
{
cacheRes = new System.Collections.Generic.Dictionary <string, ArrayByte>(
CollectionUtils.INITIAL_CAPACITY);
}
result = (ArrayByte)CollectionUtils.Get(cacheRes, fileName);
if (result == null)
{
result = new ArrayByte(ins, ArrayByte.LITTLE_ENDIAN);
CollectionUtils.Put(cacheRes, fileName, result);
}
else
{
result.Reset(ArrayByte.LITTLE_ENDIAN);
}
}
else
{
result = new ArrayByte(ins, ArrayByte.LITTLE_ENDIAN);
}
if (pak == null)
{
pak = new PAK();
LPKHeader header = ReadHeader(result);
pak.tables = ReadLPKTable(result, (int)header.GetTables());
pak.head_size = (int)(LPKHeader.Size() + header.GetTables()
* LPKTable.Size());
pak.skip = result.Position();
pak.length = result.Length();
CollectionUtils.Put(pakRes, fileName, pak);
}
else
{
result.SetPosition(pak.skip);
}
bool find = false;
int fileIndex = 0;
string innerName = null;
LPKTable[] tables_0 = pak.tables;
int size = tables_0.Length;
for (int i = 0; i < size; i++)
{
innerName = tables_0[i].GetFileName();
if (resName.Equals(innerName, System.StringComparison.InvariantCultureIgnoreCase))
{
find = true;
fileIndex = i;
break;
}
}
if (!find)
{
throw new Exception("File not found. ( " + fileName
+ " )");
}
else
{
return(ReadFileFromPak(result, pak.head_size, tables_0[fileIndex]));
}
} catch (Exception) {
throw new Exception("File not found. ( " + fileName + " )");
}
}
public static LPKHeader ReadHeader(ArrayByte dis) {
LPKHeader header = new LPKHeader();
header.SetPAKIdentity(dis.ReadInt());
byte[] pass = dis.ReadByteArray(LPKHeader.LF_PASSWORD_LENGTH);
header.SetPassword(pass);
header.SetVersion(dis.ReadFloat());
header.SetTables(dis.ReadLong());
return header;
}
/// <summary>
/// 获得指定头文件的偏移长度
/// </summary>
///
/// <param name="header"></param>
/// <returns></returns>
public static long OutputOffset(LPKHeader header)
{
return(LPKHeader.Size() + header.GetTables() * LPKTable.Size());
}
