/// <summary>
/// 读取HPK头文件并
/// </summary>
/// <param name="file"></param>
/// <param name="hpkFile"></param>
/// <param name="files"></param>
/// <returns>如果成功，则返回true</returns>
private bool ReadHeader(FileInfo file, out HpkFile hpkFile, out List <FileData> files)
{
hpkFile = new HpkFile();
files = new List <FileData>();
using (FileStream fileReader = file.OpenRead())
{
using (BinaryReader binReader = new BinaryReader(fileReader))
{
byte[] magic = binReader.ReadBytes(4);
if (!ByteCompare(magic, hpkFile.Magic))
{
Console.WriteLine("所选文件不是HPK文件");
return(false);
}
hpkFile.FileCount = DataConverter.BigEndian.GetUInt32(binReader.ReadBytes(4), 0);
hpkFile.CompressedSize = DataConverter.BigEndian.GetUInt32(binReader.ReadBytes(4), 0);
hpkFile.NameEnd = DataConverter.BigEndian.GetUInt32(binReader.ReadBytes(4), 0);
hpkFile.NameStart = DataConverter.BigEndian.GetUInt32(binReader.ReadBytes(4), 0);
hpkFile.BaseOffset = DataConverter.BigEndian.GetUInt32(binReader.ReadBytes(4), 0);
hpkFile.Version = DataConverter.BigEndian.GetInt32(binReader.ReadBytes(4), 0);
//遍历读取每个文件的控制信息
binReader.ReadBytes(4);//跳过4个空的数据
for (int i = 0; i < hpkFile.FileCount; i++)
{
FileData fileData = new FileData();
fileData.HashData = binReader.ReadBytes(0x10);
fileData.Offset = DataConverter.BigEndian.GetUInt32(binReader.ReadBytes(4), 0);
fileData.Size = DataConverter.BigEndian.GetUInt32(binReader.ReadBytes(4), 0);
fileData.NameOffset = DataConverter.BigEndian.GetUInt32(binReader.ReadBytes(4), 0);
fileData.Unknown = binReader.ReadBytes(4);
files.Add(fileData);
long currentPosition = fileReader.Position;//记录当前位置
uint namePosition = hpkFile.NameStart + fileData.NameOffset;
fileReader.Seek(namePosition, SeekOrigin.Begin);
List <byte> nameData = new List <byte>();
while (binReader.PeekChar() != 0)
{
nameData.Add(binReader.ReadByte());
}
fileData.FilePath = Encoding.UTF8.GetString(nameData.ToArray());
//还原位置
fileReader.Seek(currentPosition, SeekOrigin.Begin);
}
}
}
return(true);
}
public void Unpack(FileInfo file)
{
//将解包出来的文件全部放入这个basePath下
string basePath = file.Name.Replace(file.Extension, "");
HpkFile hpkFile = null;
List <FileData> files = null;
if (ReadHeader(file, out hpkFile, out files))
{
using (FileStream fileReader = file.OpenRead())
{
foreach (var single in files)
{
uint filePos = single.Offset + hpkFile.BaseOffset;
fileReader.Seek(filePos, SeekOrigin.Begin);
byte[] data = new byte[single.Size];
fileReader.Read(data, 0, (int)single.Size);
string savePath = Path.Combine(basePath, single.FilePath);
string tempPath = savePath.Substring(0, savePath.LastIndexOf("/"));
if (!Directory.Exists(tempPath))
{
Directory.CreateDirectory(tempPath);
}
File.WriteAllBytes(savePath, data);
}
//完成之后，将现有头文件写入解压的根目录
fileReader.Seek(0, SeekOrigin.Begin);
byte[] header = new byte[hpkFile.BaseOffset];
fileReader.Read(header, 0, (int)hpkFile.BaseOffset);
File.WriteAllBytes(Path.Combine(basePath, "record.dat"), header);
}
}
}
public void Pack(DirectoryInfo directory)
{
string basePath = directory.Name;
HpkFile hpkFile = null;
List <FileData> files = null;
FileInfo recordFile = new FileInfo(Path.Combine(basePath, "record.dat"));
if (ReadHeader(recordFile, out hpkFile, out files))
{
using (MemoryStream allMemory = new MemoryStream())
{
using (MemoryStream fileMemory = new MemoryStream())
{
//遍历文件进行读取并写入内存
bool isFirst = true;
for (int i = 0; i < files.Count; i++)
{
string savePath = Path.Combine(basePath, files[i].FilePath);
byte[] data = File.ReadAllBytes(savePath);
fileMemory.Write(data, 0, data.Length);
//修改FileData记录的文件大小
files[i].Size = (uint)data.Length;
//修改偏移位置
if (isFirst)
{
files[i].Offset = 0;
isFirst = false;
}
else
{
files[i].Offset = files[i - 1].Size + files[i - 1].Offset;
}
}
//开始建立头文件
allMemory.Write(hpkFile.Magic, 0, 4);
allMemory.Write(DataConverter.BigEndian.GetBytes(hpkFile.FileCount), 0, 4);
uint compressedSize = (uint)(hpkFile.BaseOffset + fileMemory.Length);
allMemory.Write(DataConverter.BigEndian.GetBytes(compressedSize), 0, 4);
allMemory.Write(DataConverter.BigEndian.GetBytes(hpkFile.NameEnd), 0, 4);
allMemory.Write(DataConverter.BigEndian.GetBytes(hpkFile.NameStart), 0, 4);
allMemory.Write(DataConverter.BigEndian.GetBytes(hpkFile.BaseOffset), 0, 4);
allMemory.Write(DataConverter.BigEndian.GetBytes(hpkFile.Version), 0, 4);
allMemory.Write(new byte[4], 0, 4);
//遍历写入文件控制信息
foreach (var single in files)
{
allMemory.Write(single.HashData, 0, 0x10);
allMemory.Write(DataConverter.BigEndian.GetBytes(single.Offset), 0, 4);
allMemory.Write(DataConverter.BigEndian.GetBytes(single.Size), 0, 4);
allMemory.Write(DataConverter.BigEndian.GetBytes(single.NameOffset), 0, 4);
allMemory.Write(single.Unknown, 0, 4);
}
//写入文件名称
foreach (var single in files)
{
byte[] pathData = Encoding.UTF8.GetBytes(single.FilePath);
allMemory.Write(pathData, 0, pathData.Length);
allMemory.WriteByte(0);
}
//补0
int zeroCount = (int)(hpkFile.BaseOffset - allMemory.Length);
for (int i = 0; i < zeroCount; i++)
{
allMemory.WriteByte(0);
}
//最后写入文件数据
allMemory.Write(fileMemory.ToArray(), 0, (int)fileMemory.Length);
File.WriteAllBytes(basePath + ".hpk", allMemory.ToArray());
}
}
}
}
/// <summary>
/// 读取HPK头文件并
/// </summary>
/// <param name="file"></param>
/// <param name="hpkFile"></param>
/// <param name="files"></param>
/// <returns>如果成功，则返回true</returns>
private bool ReadHeader(FileInfo file, out HpkFile hpkFile, out List<FileData> files)
{
hpkFile = new HpkFile();
files = new List<FileData>();
using (FileStream fileReader = file.OpenRead())
{
using (BinaryReader binReader = new BinaryReader(fileReader))
{
byte[] magic = binReader.ReadBytes(4);
if (!ByteCompare(magic, hpkFile.Magic))
{
Console.WriteLine("所选文件不是HPK文件");
return false;
}
hpkFile.FileCount = DataConverter.BigEndian.GetUInt32(binReader.ReadBytes(4), 0);
hpkFile.CompressedSize = DataConverter.BigEndian.GetUInt32(binReader.ReadBytes(4), 0);
hpkFile.NameEnd = DataConverter.BigEndian.GetUInt32(binReader.ReadBytes(4), 0);
hpkFile.NameStart = DataConverter.BigEndian.GetUInt32(binReader.ReadBytes(4), 0);
hpkFile.BaseOffset = DataConverter.BigEndian.GetUInt32(binReader.ReadBytes(4), 0);
hpkFile.Version = DataConverter.BigEndian.GetInt32(binReader.ReadBytes(4), 0);
//遍历读取每个文件的控制信息
binReader.ReadBytes(4);//跳过4个空的数据
for (int i = 0; i < hpkFile.FileCount; i++)
{
FileData fileData = new FileData();
fileData.HashData = binReader.ReadBytes(0x10);
fileData.Offset = DataConverter.BigEndian.GetUInt32(binReader.ReadBytes(4), 0);
fileData.Size = DataConverter.BigEndian.GetUInt32(binReader.ReadBytes(4), 0);
fileData.NameOffset = DataConverter.BigEndian.GetUInt32(binReader.ReadBytes(4), 0);
fileData.Unknown = binReader.ReadBytes(4);
files.Add(fileData);
long currentPosition = fileReader.Position;//记录当前位置
uint namePosition = hpkFile.NameStart + fileData.NameOffset;
fileReader.Seek(namePosition, SeekOrigin.Begin);
List<byte> nameData = new List<byte>();
while (binReader.PeekChar() != 0)
{
nameData.Add(binReader.ReadByte());
}
fileData.FilePath = Encoding.UTF8.GetString(nameData.ToArray());
//还原位置
fileReader.Seek(currentPosition, SeekOrigin.Begin);
}
}
}
return true;
}
