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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#ifndef _VFS_HANDLER_H
#define _VFS_HANDLER_H
#include <map>
#include <string>
#include <vector>
#include <boost/cstdint.hpp>
class IArchive;
/**
* Main API for accessing the Virtual File System (VFS).
* This only allows accessing the VFS (stuff within archives registered with the
* VFS), NOT the real file system.
*/
class CVFSHandler
{
public:
CVFSHandler();
~CVFSHandler();
/**
* Checks whether a file exists in the VFS (does not work for dirs).
* This is cheaper then calling LoadFile, if you do not require the contents
* of the file.
* @param filePath raw file path, for example "maps/myMap.smf",
* case-insensitive
* @return true if the file exists in the VFS, false otherwise
*/
bool FileExists(const std::string& filePath);
/**
* Reads the contents of a file from within the VFS.
* @param filePath raw file path, for example "maps/myMap.smf",
* case-insensitive
* @return true if the file exists in the VFS and was successfully read
*/
bool LoadFile(const std::string& filePath, std::vector<boost::uint8_t>& buffer);
/**
* Returns all the files in the given (virtual) directory without the
* preceeding pathname.
* @param dir raw directory path, for example "maps/" or "maps",
* case-insensitive
*/
std::vector<std::string> GetFilesInDir(const std::string& dir);
/**
* Returns all the sub-directories in the given (virtual) directory without
* the preceeding pathname.
* @param dir raw directory path, for example "maps/" or "maps",
* case-insensitive
*/
std::vector<std::string> GetDirsInDir(const std::string& dir);
/**
* Adds an archive to the VFS.
* @param override determines whether in case of a conflict, the existing
* entry in the VFS is overwritten or not.
*/
bool AddArchive(const std::string& archiveName, bool override, const std::string& type = "");
/**
* Adds an archive and all of its dependencies to the VFS.
* @param override determines whether in case of a conflict, the existing
* entry in the VFS is overwritten or not.
*/
bool AddArchiveWithDeps(const std::string& archiveName, bool override, const std::string& type = "");
/**
* Removes an archive from the VFS.
* @return true if the archive is not loaded anymore; it was not loaded
* in the first place, or was unloaded successfully.
*/
bool RemoveArchive(const std::string& archiveName);
protected:
struct FileData {
IArchive* ar;
int size;
};
std::map<std::string, FileData> files;
std::map<std::string, IArchive*> archives;
private:
std::string GetNormalizedPath(const std::string& rawPath);
const FileData* GetFileData(const std::string& normalizedFilePath);
};
extern CVFSHandler* vfsHandler;
#endif // _VFS_HANDLER_H
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