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forked from 0ad/0ad
0ad/source/ps/Filesystem.h
bb 157c6af18e Make the space in 0 A.D. non-breaking throughout the codebase.
Avoid cases of filenames
Update years in terms and other legal(ish) documents
Don't update years in license headers, since change is not meaningful

Will add linter rule in seperate commit

Happy recompiling everyone!

Original Patch By: Nescio
Comment By: Gallaecio
Differential Revision: D2620
This was SVN commit r27786.
2023-07-27 20:54:46 +00:00

107 lines
2.9 KiB
C++

/* Copyright (C) 2021 Wildfire Games.
* This file is part of 0 A.D.
*
* 0 A.D. is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* 0 A.D. is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with 0 A.D. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef INCLUDED_PS_FILESYSTEM
#define INCLUDED_PS_FILESYSTEM
#include "lib/file/file.h"
#include "lib/file/io/write_buffer.h"
#include "lib/file/vfs/vfs_util.h"
#include "ps/CStrForward.h"
#include "ps/Errors.h"
extern PIVFS g_VFS;
extern bool VfsFileExists(const VfsPath& pathname);
extern bool VfsDirectoryExists(const VfsPath& pathname);
/**
* callback function type for file change notifications
*/
typedef Status (*FileReloadFunc)(void* param, const VfsPath& path);
/**
* register a callback function to be called by ReloadChangedFiles
*/
void RegisterFileReloadFunc(FileReloadFunc func, void* obj);
/**
* delete a callback function registered with RegisterFileReloadFunc
* (removes any with the same func and obj)
*/
void UnregisterFileReloadFunc(FileReloadFunc func, void* obj);
/**
* poll for directory change notifications and reload all affected files.
* must be called regularly (e.g. once a frame), else notifications
* may be lost.
* note: polling is much simpler than asynchronous notifications.
**/
extern Status ReloadChangedFiles();
/**
* Helper function to handle API differences between Boost Filesystem v2 and v3
*/
std::wstring GetWstringFromWpath(const fs::wpath& path);
ERROR_GROUP(CVFSFile);
ERROR_TYPE(CVFSFile, LoadFailed);
ERROR_TYPE(CVFSFile, AlreadyLoaded);
/**
* Reads a file, then gives read-only access to the contents
*/
class CVFSFile
{
public:
CVFSFile();
~CVFSFile();
/**
* Returns either PSRETURN_OK or PSRETURN_CVFSFile_LoadFailed
* @note Dies if the file has already been successfully loaded
* @param log Whether to log a failure to load a file
*/
PSRETURN Load(const PIVFS& vfs, const VfsPath& filename, bool log = true);
/**
* Returns buffer of this file as a stream of bytes
* @note file must have been successfully loaded
*/
const u8* GetBuffer() const;
size_t GetBufferSize() const;
/**
* Returns contents of file as a string
* @note file must have been successfully loaded
*/
CStr8 GetAsString() const;
/**
* Returns contents of a UTF-8 encoded file as a string with optional BOM removed
* @note file must have been successfully loaded
*/
CStr8 DecodeUTF8() const;
private:
std::shared_ptr<u8> m_Buffer;
size_t m_BufferSize;
};
#endif // #ifndef INCLUDED_PS_FILESYSTEM