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Add a way to restrict ISO reading to a single path.

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This is for GameInfoCache.
This commit is contained in:
Unknown W. Brackets 2013-03-31 21:35:30 -07:00
parent 20bb55e1cb
commit d11a5debcb
3 changed files with 32 additions and 8 deletions
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30
Core/FileSystems/ISOFileSystem.cpp
View File

@ -133,8 +133,21 @@ struct VolDescriptor
std::list<ISOFileSystem::TreeEntry *> ISOFileSystem::entryFreeList;
ISOFileSystem::ISOFileSystem(IHandleAllocator *_hAlloc, BlockDevice *_blockDevice)
ISOFileSystem::ISOFileSystem(IHandleAllocator *_hAlloc, BlockDevice *_blockDevice, std::string _restrictPath)
{
if (!_restrictPath.empty())
{
size_t pos = _restrictPath.find_first_not_of('/');
while (!_restrictPath.empty())
{
size_t endPos = _restrictPath.find_first_of('/', pos);
if (pos != endPos)
restrictTree.push_back(_restrictPath.substr(pos, endPos));
pos = _restrictPath.find_first_not_of('/', endPos);
_restrictPath.erase(0, pos);
}
}
blockDevice = _blockDevice;
hAlloc = _hAlloc;
@ -169,7 +182,7 @@ ISOFileSystem::ISOFileSystem(IHandleAllocator *_hAlloc, BlockDevice *_blockDevic
u32 rootSector = desc.root.firstDataSectorLE;
u32 rootSize = desc.root.dataLengthLE;
ReadDirectory(rootSector, rootSize, treeroot);
ReadDirectory(rootSector, rootSize, treeroot, 0);
}
ISOFileSystem::~ISOFileSystem()
@ -178,7 +191,7 @@ ISOFileSystem::~ISOFileSystem()
ReleaseTreeEntry(treeroot);
}
void ISOFileSystem::ReadDirectory(u32 startsector, u32 dirsize, TreeEntry *root)
void ISOFileSystem::ReadDirectory(u32 startsector, u32 dirsize, TreeEntry *root, size_t level)
{
for (u32 secnum = startsector, endsector = dirsize/2048 + startsector; secnum < endsector; ++secnum)
{
@ -198,7 +211,7 @@ void ISOFileSystem::ReadDirectory(u32 startsector, u32 dirsize, TreeEntry *root)
if (offset + IDENTIFIER_OFFSET + dir.identifierLength > 2048)
{
ERROR_LOG(FILESYS, "Directory entry crosses sectors, corrupt iso?");
break;
return;
}
offset += dir.size;
@ -241,7 +254,14 @@ void ISOFileSystem::ReadDirectory(u32 startsector, u32 dirsize, TreeEntry *root)
}
else
{
ReadDirectory(dir.firstDataSectorLE, dir.dataLengthLE, e);
bool doRecurse = true;
if (!restrictTree.empty())
doRecurse = level < restrictTree.size() && restrictTree[level] == e->name;
if (doRecurse)
ReadDirectory(dir.firstDataSectorLE, dir.dataLengthLE, e, level + 1);
else
continue;
}
}
root->children.push_back(e);

8
Core/FileSystems/ISOFileSystem.h
View File

@ -20,6 +20,7 @@
#include <map>
#include <string>
#include <list>
#include <vector>
#include "FileSystem.h"
@ -29,7 +30,7 @@
class ISOFileSystem : public IFileSystem
{
public:
ISOFileSystem(IHandleAllocator *_hAlloc, BlockDevice *_blockDevice);
ISOFileSystem(IHandleAllocator *_hAlloc, BlockDevice *_blockDevice, std::string _restrictPath = "");
~ISOFileSystem();
void DoState(PointerWrap &p);
std::vector<PSPFileInfo> GetDirListing(std::string path);
@ -87,7 +88,10 @@ private:
TreeEntry entireISO;
void ReadDirectory(u32 startsector, u32 dirsize, TreeEntry *root);
// Don't use this in the emu, not savestated.
std::vector<std::string> restrictTree;
void ReadDirectory(u32 startsector, u32 dirsize, TreeEntry *root, size_t level);
TreeEntry *GetFromPath(std::string path, bool catchError=true);
std::string EntryFullPath(TreeEntry *e);

2
UI/GameInfoCache.cpp
View File

@ -120,7 +120,7 @@ again:
BlockDevice *bd = constructBlockDevice(gamePath.c_str());
if (!bd)
return 0; // nothing to do here..
ISOFileSystem umd(&handles, bd);
ISOFileSystem umd(&handles, bd, "/PSP_GAME");
GameInfo *info = new GameInfo();
info->wantBG = wantBG;