/**
* 读取文件列表
*
* @param dis
* @param fileTableNumber
* @return
* @throws Exception
*/
public static LPKTable[] readLPKTable(DataInputStream dis, int fileTableNumber) throws Exception {
LPKTable[] fileTable = new LPKTable[fileTableNumber];
for (int i = 0; i < fileTableNumber; i++) {
LPKTable ft = new LPKTable();
ft.setFileName(readByteArray(dis, LPKHeader.LF_FILE_LENGTH));
ft.setFileSize(dis.readLong());
ft.setOffSet(dis.readLong());
fileTable[i] = ft;
}
return fileTable;
}
/**
* 读取数据流
*
* @param dis
* @param header
* @param fileTable
* @return
* @throws Exception
*/
public static byte[] readFileFromPak(DataInputStream dis, LPKHeader header, LPKTable fileTable)
throws Exception {
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;
}
}
/**
* 获得指定头文件的偏移长度
*
* @param header
* @return
*/
public static long outputOffset(LPKHeader header) {
return LPKHeader.size() + header.getTables() * LPKTable.size();
}
