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/* -------------------------------------------
Copyright (C) 2024, Amlal EL Mahrouss, all rights reserved.
------------------------------------------- */
#include <KernelKit/FileMgr.h>
#include <KernelKit/MemoryMgr.h>
#ifndef __NE_MINIMAL_OS__
#ifdef __FSKIT_INCLUDES_NEFS__
/// @brief NeFS File manager.
/// BUGS: 0
namespace Kernel
{
/// @brief C++ constructor
NeFileSystemMgr::NeFileSystemMgr()
{
NeFileSystemParser* mParser = new NeFileSystemParser();
MUST_PASS(mParser);
kcout << "We are done allocating NeFileSystemParser...\r";
}
NeFileSystemMgr::~NeFileSystemMgr()
{
if (mParser)
{
kcout << "Destroying NeFileSystemParser...\r";
mm_delete_class(&mParser);
}
}
/// @brief Removes a node from the filesystem.
/// @param path The filename
/// @return If it was deleted or not.
bool NeFileSystemMgr::Remove(_Input const Char* path)
{
if (path == nullptr || *path == 0)
return false;
return mParser->RemoveCatalog(path);
}
/// @brief Creates a node with the specified.
/// @param path The filename path.
/// @return The Node pointer.
NodePtr NeFileSystemMgr::Create(_Input const Char* path)
{
return node_cast(mParser->CreateCatalog(path));
}
/// @brief Creates a node with is a directory.
/// @param path The filename path.
/// @return The Node pointer.
NodePtr NeFileSystemMgr::CreateDirectory(const Char* path)
{
return node_cast(mParser->CreateCatalog(path, 0, kNeFSCatalogKindDir));
}
/// @brief Creates a node with is a alias.
/// @param path The filename path.
/// @return The Node pointer.
NodePtr NeFileSystemMgr::CreateAlias(const Char* path)
{
return node_cast(mParser->CreateCatalog(path, 0, kNeFSCatalogKindAlias));
}
/// @brief Creates a node with is a page file.
/// @param path The filename path.
/// @return The Node pointer.
NodePtr NeFileSystemMgr::CreateSwapFile(const Char* path)
{
return node_cast(mParser->CreateCatalog(path, 0, kNeFSCatalogKindPage));
}
/// @brief Gets the root directory.
/// @return
const Char* NeFileSystemHelper::Root()
{
return kNeFSRoot;
}
/// @brief Gets the up-dir directory.
/// @return
const Char* NeFileSystemHelper::UpDir()
{
return kNeFSUpDir;
}
/// @brief Gets the separator character.
/// @return
const Char NeFileSystemHelper::Separator()
{
return kNeFSSeparator;
}
/// @brief Gets the metafile character.
/// @return
const Char NeFileSystemHelper::MetaFile()
{
return kNeFSMetaFilePrefix;
}
/// @brief Opens a new file.
/// @param path
/// @param r
/// @return
_Output NodePtr NeFileSystemMgr::Open(_Input const Char* path, _Input const Char* r)
{
if (!path || *path == 0)
return nullptr;
if (!r || *r == 0)
return nullptr;
auto catalog = mParser->GetCatalog(path);
return node_cast(catalog);
}
/// @brief Writes to a catalog's fork.
/// @param node the node ptr.
/// @param data the data.
/// @param flags the size.
/// @return
Void NeFileSystemMgr::Write(_Input NodePtr node, _Input VoidPtr data, _Input Int32 flags, _Input SizeT size)
{
if (!node)
return;
if (!size)
return;
constexpr auto kDataForkName = kNeFSDataFork;
this->Write(kDataForkName, node, data, flags, size);
}
/// @brief Read from filesystem fork.
/// @param node the catalog node.
/// @param flags the flags with it.
/// @param sz the size to read.
/// @return
_Output VoidPtr NeFileSystemMgr::Read(_Input NodePtr node, _Input Int32 flags, _Input SizeT size)
{
if (!node)
return nullptr;
if (!size)
return nullptr;
constexpr auto kDataForkName = kNeFSDataFork;
return this->Read(kDataForkName, node, flags, size);
}
Void NeFileSystemMgr::Write(_Input const Char* name,
_Input NodePtr node,
_Input VoidPtr data,
_Input Int32 flags,
_Input SizeT size)
{
if (!size ||
size > kNeFSForkSize)
return;
if (!data)
return;
NE_UNUSED(flags);
if ((reinterpret_cast<NFS_CATALOG_STRUCT*>(node))->Kind == kNeFSCatalogKindFile)
mParser->WriteCatalog(reinterpret_cast<NFS_CATALOG_STRUCT*>(node)->Name, (flags & kFileFlagRsrc ? true : false), data, size,
name);
}
_Output VoidPtr NeFileSystemMgr::Read(_Input const Char* name,
_Input NodePtr node,
_Input Int32 flags,
_Input SizeT sz)
{
if (sz > kNeFSForkSize)
return nullptr;
if (!sz)
return nullptr;
NE_UNUSED(flags);
if ((reinterpret_cast<NFS_CATALOG_STRUCT*>(node))->Kind == kNeFSCatalogKindFile)
return mParser->ReadCatalog(reinterpret_cast<NFS_CATALOG_STRUCT*>(node), (flags & kFileFlagRsrc ? true : false), sz,
name);
return nullptr;
}
/// @brief Seek from Catalog.
/// @param node
/// @param off
/// @retval true always returns false, this is unimplemented.
/// @retval false always returns this, it is unimplemented.
_Output Bool NeFileSystemMgr::Seek(NodePtr node, SizeT off)
{
if (!node || off == 0)
return false;
return mParser->Seek(reinterpret_cast<NFS_CATALOG_STRUCT*>(node), off);
}
/// @brief Tell where the catalog is.
/// @param node
/// @retval true always returns false, this is unimplemented.
/// @retval false always returns this, it is unimplemented.
_Output SizeT NeFileSystemMgr::Tell(NodePtr node)
{
if (!node)
return kNPos;
return mParser->Tell(reinterpret_cast<NFS_CATALOG_STRUCT*>(node));
}
/// @brief Rewinds the catalog.
/// @param node
/// @retval true always returns false, this is unimplemented.
/// @retval false always returns this, it is unimplemented.
_Output Bool NeFileSystemMgr::Rewind(NodePtr node)
{
if (!node)
return false;
return this->Seek(node, 0);
}
/// @brief Returns the filesystem parser.
/// @return the Filesystem parser class.
_Output NeFileSystemParser* NeFileSystemMgr::GetParser() noexcept
{
return mParser;
}
} // namespace Kernel
#endif // ifdef __FSKIT_INCLUDES_NEFS__
#endif // ifndef __NE_MINIMAL_OS__
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