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Open directory as disc image

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This commit is contained in:
Kingcom
2013-07-23 17:24:33 +02:00
parent c9279a951b
commit 8955fedf44
14 changed files with 214 additions and 15 deletions
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139
Core/FileSystems/DirectoryFileSystem.cpp
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@@ -18,6 +18,7 @@
#include "ChunkFile.h"
#include "FileUtil.h"
#include "DirectoryFileSystem.h"
#include "ISOFileSystem.h"
#include "Core/HLE/sceKernel.h"
#include "file/zip_read.h"
@@ -133,7 +134,17 @@ bool DirectoryFileSystem::FixPathCase(std::string &path, FixPathCaseBehavior beh
#endif
DirectoryFileSystem::DirectoryFileSystem(IHandleAllocator *_hAlloc, std::string _basePath) : basePath(_basePath) {
DirectoryFileSystem::DirectoryFileSystem(IHandleAllocator *_hAlloc, std::string _basePath, bool _virtualDisc)
: basePath(_basePath),virtualDisc(_virtualDisc),currentBlockIndex(0) {
#ifdef _WIN32
if (basePath.size() > 0 && basePath[basePath.size()-1] != '\\')
basePath = basePath + "\\";
#else
if (basePath.size() > 0 && basePath[basePath.size()-1] != '/')
basePath = basePath + "/";
#endif
File::CreateFullPath(basePath);
hAlloc = _hAlloc;
}
@@ -288,6 +299,80 @@ bool DirectoryFileSystem::RemoveFile(const std::string &filename) {
}
u32 DirectoryFileSystem::OpenFile(std::string filename, FileAccess access, const char *devicename) {
if (filename.compare(0,8,"/sce_lbn") == 0)
{
u32 sectorStart = 0xFFFFFFFF, readSize = 0xFFFFFFFF;
parseLBN(filename, &sectorStart, &readSize);
OpenFileEntry entry;
entry.lbnFile = true;
entry.size = readSize;
entry.curOffset = 0;
std::string actualFileName = "";
for (int i = 0; i < fileBlocks.size(); i++)
{
if (fileBlocks[i].firstBlock <= sectorStart)
{
u32 sectorOffset = (sectorStart-fileBlocks[i].firstBlock)*2048;
u32 endOffset = sectorOffset+readSize;
if (endOffset <= fileBlocks[i].totalSize)
{
entry.startOffset = sectorOffset;
actualFileName = fileBlocks[i].fileName;
break;
}
}
}
// no file info has been gathered? shouldn't happen
if (actualFileName == "")
{
ERROR_LOG(FILESYS, "sce_lbn used without calling fileinfo.");
return 0;
}
#if HOST_IS_CASE_SENSITIVE
if (access & (FILEACCESS_APPEND|FILEACCESS_CREATE|FILEACCESS_WRITE))
{
DEBUG_LOG(HLE, "Checking case for path %s", filename.c_str());
if ( ! FixPathCase(actualFileName, FPC_PATH_MUST_EXIST) )
return 0; // or go on and attempt (for a better error code than just 0?)
}
// else we try fopen first (in case we're lucky) before simulating case insensitivity
#endif
// now we just need an actual file handle
std::string fullName = GetLocalPath(actualFileName);
#ifdef _WIN32
entry.hFile = CreateFile(fullName.c_str(), GENERIC_READ, FILE_SHARE_READ, 0, OPEN_EXISTING, 0, 0);
bool success = entry.hFile != INVALID_HANDLE_VALUE;
#else
entry.hFile = fopen(fullName.c_str(), "rb");
bool success = entry.hFile != 0;
#endif
if (!success)
{
ERROR_LOG(HLE, "DiscDirectoryFileSystem::OpenFile: FAILED, %i", GetLastError());
return 0;
}
// seek to start
#ifdef _WIN32
DWORD newPos = SetFilePointer(entry.hFile, (LONG)entry.startOffset, 0, FILE_BEGIN);
#else
fseek(entry.hFile, entry.startOffset, SEEK_SET);
#endif
u32 newHandle = hAlloc->GetNewHandle();
entries[newHandle] = entry;
return newHandle;
}
#if HOST_IS_CASE_SENSITIVE
if (access & (FILEACCESS_APPEND|FILEACCESS_CREATE|FILEACCESS_WRITE))
{
@@ -303,6 +388,7 @@ u32 DirectoryFileSystem::OpenFile(std::string filename, FileAccess access, const
INFO_LOG(HLE,"Actually opening %s (%s)", fullNameC, filename.c_str());
OpenFileEntry entry;
entry.lbnFile = false;
//TODO: tests, should append seek to end of file? seeking in a file opened for append?
#ifdef _WIN32
@@ -430,6 +516,11 @@ size_t DirectoryFileSystem::ReadFile(u32 handle, u8 *pointer, s64 size) {
#else
bytesRead = fread(pointer, 1, size, iter->second.hFile);
#endif
if (iter->second.lbnFile)
{
iter->second.curOffset += bytesRead;
}
return bytesRead;
} else {
//This shouldn't happen...
@@ -459,6 +550,23 @@ size_t DirectoryFileSystem::WriteFile(u32 handle, const u8 *pointer, s64 size) {
size_t DirectoryFileSystem::SeekFile(u32 handle, s32 position, FileMove type) {
EntryMap::iterator iter = entries.find(handle);
if (iter != entries.end()) {
if (iter->second.lbnFile)
{
switch (type) {
case FILEMOVE_BEGIN: iter->second.curOffset = position; break;
case FILEMOVE_CURRENT: iter->second.curOffset += position; break;
case FILEMOVE_END: iter->second.curOffset = iter->second.size-position; break;
}
#ifdef _WIN32
u32 off = iter->second.startOffset+iter->second.curOffset;
DWORD newPos = SetFilePointer((*iter).second.hFile, (LONG)off, 0, FILE_BEGIN);
#else
fseek(iter->second.hFile, iter->second.curOffset+iter->second.startOffset, SEEK_SET);
#endif
return iter->second.curOffset;
}
#ifdef _WIN32
DWORD moveMethod = 0;
switch (type) {
@@ -485,6 +593,19 @@ size_t DirectoryFileSystem::SeekFile(u32 handle, s32 position, FileMove type) {
}
}
u32 DirectoryFileSystem::GetFileLbn(std::string& fileName)
{
if (!virtualDisc) return -1;
for (int i = 0; i < fileBlocks.size(); i++)
{
if (fileBlocks[i].fileName == fileName)
return fileBlocks[i].firstBlock;
}
return -1;
}
PSPFileInfo DirectoryFileSystem::GetFileInfo(std::string filename) {
PSPFileInfo x;
x.name = filename;
@@ -517,6 +638,22 @@ PSPFileInfo DirectoryFileSystem::GetFileInfo(std::string filename) {
#else
x.size = s.st_size;
#endif
if (virtualDisc)
{
x.startSector = GetFileLbn(filename);
x.numSectors = (x.size+2047)/2048;
if (x.startSector == -1)
{
x.startSector = currentBlockIndex;
currentBlockIndex += x.numSectors;
LbnMapEntry entry;
entry.fileName = filename;
entry.firstBlock = x.startSector;
entry.totalSize = x.size;
fileBlocks.push_back(entry);
}
}
x.access = s.st_mode & 0x1FF;
localtime_r((time_t*)&s.st_atime,&x.atime);
localtime_r((time_t*)&s.st_ctime,&x.ctime);