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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#ifndef _FILE_HANDLER_H
#define _FILE_HANDLER_H
#include <set>
#include <vector>
#include <string>
#include <ios>
#include <boost/cstdint.hpp>
#include "VFSModes.h"
/**
* This is for direct VFS file content access.
* If you need data-dir related file and dir handling methods,
* have a look at the FileSystem class.
*
* This class should be threadsafe (multiple threads can use multiple
* CFileHandler pointing to the same file simulatneously) as long as there are
* no new Archives added to the VFS (which should not happen after PreGame).
*/
class CFileHandler
{
public:
CFileHandler(const char* fileName, const char* modes = SPRING_VFS_RAW_FIRST);
CFileHandler(const std::string& fileName, const std::string& modes = SPRING_VFS_RAW_FIRST);
~CFileHandler();
int Read(void* buf, int length);
void Seek(int pos, std::ios_base::seekdir where = std::ios_base::beg);
static bool FileExists(const std::string& filePath, const std::string& modes);
bool FileExists() const;
bool Eof() const;
int Peek() const;
int GetPos() const;
int FileSize() const;
bool LoadStringData(std::string& data);
std::string GetFileExt() const;
static bool InReadDir(const std::string& path);
static bool InWriteDir(const std::string& path);
static std::vector<std::string> FindFiles(const std::string& path, const std::string& pattern);
static std::vector<std::string> DirList(const std::string& path, const std::string& pattern, const std::string& modes);
static std::vector<std::string> SubDirs(const std::string& path, const std::string& pattern, const std::string& modes);
static std::string AllowModes(const std::string& modes, const std::string& allowed);
static std::string ForbidModes(const std::string& modes, const std::string& forbidden);
private:
void TryReadContent(const std::string& fileName, const std::string& modes);
bool TryReadFromRawFS(const std::string& fileName);
bool TryReadFromModFS(const std::string& fileName);
bool TryReadFromMapFS(const std::string& fileName);
bool TryReadFromBaseFS(const std::string& fileName);
static bool InsertRawFiles(std::set<std::string>& fileSet, const std::string& path, const std::string& pattern);
static bool InsertModFiles(std::set<std::string>& fileSet, const std::string& path, const std::string& pattern);
static bool InsertMapFiles(std::set<std::string>& fileSet, const std::string& path, const std::string& pattern);
static bool InsertBaseFiles(std::set<std::string>& fileSet, const std::string& path, const std::string& pattern);
static bool InsertRawDirs(std::set<std::string>& dirSet, const std::string& path, const std::string& pattern);
static bool InsertModDirs(std::set<std::string>& dirSet, const std::string& path, const std::string& pattern);
static bool InsertMapDirs(std::set<std::string>& dirSet, const std::string& path, const std::string& pattern);
static bool InsertBaseDirs(std::set<std::string>& dirSet, const std::string& path, const std::string& pattern);
std::string fileName;
std::ifstream* ifs;
std::vector<boost::uint8_t> fileBuffer;
int filePos;
int fileSize;
};
#endif // _FILE_HANDLER_H
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