diff options
Diffstat (limited to 'Source/Core/DiscIO/Src/FileSystemGCWii.cpp')
| -rw-r--r-- | Source/Core/DiscIO/Src/FileSystemGCWii.cpp | 276 |
1 files changed, 276 insertions, 0 deletions
diff --git a/Source/Core/DiscIO/Src/FileSystemGCWii.cpp b/Source/Core/DiscIO/Src/FileSystemGCWii.cpp new file mode 100644 index 0000000000..1a76bb1814 --- /dev/null +++ b/Source/Core/DiscIO/Src/FileSystemGCWii.cpp @@ -0,0 +1,276 @@ +// Copyright (C) 2003-2008 Dolphin Project.
+
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, version 2.0.
+
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License 2.0 for more details.
+
+// A copy of the GPL 2.0 should have been included with the program.
+// If not, see http://www.gnu.org/licenses/
+
+// Official SVN repository and contact information can be found at
+// http://code.google.com/p/dolphin-emu/
+
+#include "stdafx.h"
+
+#include <string>
+
+#include "FileSystemGCWii.h"
+#include "StringUtil.h"
+
+namespace DiscIO
+{
+CFileSystemGCWii::CFileSystemGCWii(const IVolume& _rVolume)
+ : IFileSystem(_rVolume),
+ m_Initialized(false),
+ m_OffsetShift(0)
+{
+ m_Initialized = InitFileSystem();
+}
+
+
+CFileSystemGCWii::~CFileSystemGCWii()
+{}
+
+
+bool
+CFileSystemGCWii::IsInitialized()
+{
+ return(m_Initialized);
+}
+
+
+size_t
+CFileSystemGCWii::GetFileSize(const char* _rFullPath)
+{
+ if (!m_Initialized)
+ {
+ return(0);
+ }
+
+ const SFileInfo* pFileInfo = FindFileInfo(_rFullPath);
+
+ if (pFileInfo != NULL)
+ {
+ return(pFileInfo->m_FileSize);
+ }
+
+ return(0);
+}
+
+
+const char*
+CFileSystemGCWii::GetFileName(u64 _Address)
+{
+ for (size_t i = 0; i < m_FileInfoVector.size(); i++)
+ {
+ if ((m_FileInfoVector[i].m_Offset <= _Address) &&
+ ((m_FileInfoVector[i].m_Offset + m_FileInfoVector[i].m_FileSize) > _Address))
+ {
+ return(m_FileInfoVector[i].m_FullPath);
+ }
+ }
+
+ return(NULL);
+}
+
+
+size_t
+CFileSystemGCWii::ReadFile(const char* _rFullPath, u8* _pBuffer, size_t _MaxBufferSize)
+{
+ if (!m_Initialized)
+ {
+ return(0);
+ }
+
+ const SFileInfo* pFileInfo = FindFileInfo(_rFullPath);
+
+ if (pFileInfo == NULL)
+ {
+ return(0);
+ }
+
+ if (pFileInfo->m_FileSize > _MaxBufferSize)
+ {
+ return(0);
+ }
+
+ m_rVolume.Read(pFileInfo->m_Offset, pFileInfo->m_FileSize, _pBuffer);
+ return(pFileInfo->m_FileSize);
+}
+
+
+bool
+CFileSystemGCWii::ExportFile(const char* _rFullPath, const char* _rExportFilename)
+{
+ size_t filesize = GetFileSize(_rFullPath);
+
+ if (filesize == 0)
+ {
+ return(false);
+ }
+
+ u8* buffer = new u8[filesize];
+
+ if (!ReadFile(_rFullPath, buffer, filesize))
+ {
+ delete[] buffer;
+ return(false);
+ }
+
+ FILE* f = fopen(_rExportFilename, "wb");
+
+ if (f)
+ {
+ fwrite(buffer, filesize, 1, f);
+ fclose(f);
+ delete[] buffer;
+ return(true);
+ }
+
+ delete[] buffer;
+ return(false);
+}
+
+
+bool
+CFileSystemGCWii::ExportAllFiles(const char* _rFullPath)
+{
+ return(false);
+}
+
+
+u32
+CFileSystemGCWii::Read32(u64 _Offset) const
+{
+ u32 Temp = 0;
+ m_rVolume.Read(_Offset, 4, (u8*)&Temp);
+ return(Common::swap32(Temp));
+}
+
+
+void CFileSystemGCWii::GetStringFromOffset(u64 _Offset, char* Filename) const
+{
+ m_rVolume.Read(_Offset, 255, (u8*)Filename);
+}
+
+
+const CFileSystemGCWii::SFileInfo*
+CFileSystemGCWii::FindFileInfo(const char* _rFullPath) const
+{
+ for (size_t i = 0; i < m_FileInfoVector.size(); i++)
+ {
+ if (!stricmp(m_FileInfoVector[i].m_FullPath, _rFullPath))
+ {
+ return(&m_FileInfoVector[i]);
+ }
+ }
+
+ return(NULL);
+}
+
+
+bool
+CFileSystemGCWii::InitFileSystem()
+{
+ if (Read32(0x18) == 0x5D1C9EA3)
+ {
+ m_OffsetShift = 2;
+ }
+ else if (Read32(0x1c) == 0xC2339F3D)
+ {
+ m_OffsetShift = 0;
+ }
+ else
+ {
+ return(false);
+ }
+
+ // read the whole FST
+ u32 FSTOffset = Read32(0x424) << m_OffsetShift;
+ // u32 FSTSize = Read32(0x428);
+ // u32 FSTMaxSize = Read32(0x42C);
+
+
+ // read all fileinfos
+ SFileInfo Root;
+ Root.m_NameOffset = Read32(FSTOffset + 0x0);
+ Root.m_Offset = (u64)Read32(FSTOffset + 0x4) << m_OffsetShift;
+ Root.m_FileSize = Read32(FSTOffset + 0x8);
+
+ if (Root.IsDirectory())
+ {
+ m_FileInfoVector.resize(Root.m_FileSize);
+ u64 NameTableOffset = FSTOffset;
+
+ for (size_t i = 0; i < m_FileInfoVector.size(); i++)
+ {
+ u64 Offset = FSTOffset + (i * 0xC);
+ m_FileInfoVector[i].m_NameOffset = Read32(Offset + 0x0);
+ m_FileInfoVector[i].m_Offset = (u64)Read32(Offset + 0x4) << m_OffsetShift;
+ m_FileInfoVector[i].m_FileSize = Read32(Offset + 0x8);
+ NameTableOffset += 0xC;
+ }
+
+ BuildFilenames(1, m_FileInfoVector.size(), NULL, NameTableOffset);
+ }
+
+ return(true);
+}
+
+
+// __________________________________________________________________________________________________
+//
+// Changed this stuff from C++ string to C strings for speed in debug mode. Doesn't matter in release, but
+// std::string is SLOW in debug mode.
+size_t
+CFileSystemGCWii::BuildFilenames(const size_t _FirstIndex, const size_t _LastIndex, const char* _szDirectory, u64 _NameTableOffset)
+{
+ size_t CurrentIndex = _FirstIndex;
+
+ while (CurrentIndex < _LastIndex)
+ {
+ SFileInfo& rFileInfo = m_FileInfoVector[CurrentIndex];
+ u64 uOffset = _NameTableOffset + (rFileInfo.m_NameOffset & 0xFFFFFF);
+ char filename[512];
+ GetStringFromOffset(uOffset, filename);
+
+ // check next index
+ if (rFileInfo.IsDirectory())
+ {
+ // this is a directory, build up the new szDirectory
+ if (_szDirectory != NULL)
+ {
+ CharArrayFromFormat(rFileInfo.m_FullPath, "%s%s\\", _szDirectory, filename);
+ }
+ else
+ {
+ CharArrayFromFormat(rFileInfo.m_FullPath, "%s\\", filename);
+ }
+
+ CurrentIndex = BuildFilenames(CurrentIndex + 1, rFileInfo.m_FileSize, rFileInfo.m_FullPath, _NameTableOffset);
+ }
+ else
+ {
+ // this is a filename
+ if (_szDirectory != NULL)
+ {
+ CharArrayFromFormat(rFileInfo.m_FullPath, "%s%s", _szDirectory, filename);
+ }
+ else
+ {
+ CharArrayFromFormat(rFileInfo.m_FullPath, "%s", filename);
+ }
+
+ CurrentIndex++;
+ }
+ }
+
+ return(CurrentIndex);
+}
+} // namespace
+
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