mirror of
https://github.com/minetest/minetest.git
synced 2024-12-04 21:43:44 +01:00
266 lines
13 KiB
C++
266 lines
13 KiB
C++
// Copyright (C) 2002-2012 Nikolaus Gebhardt
|
|
// This file is part of the "Irrlicht Engine".
|
|
// For conditions of distribution and use, see copyright notice in irrlicht.h
|
|
|
|
#pragma once
|
|
|
|
#include "IReferenceCounted.h"
|
|
#include "IFileArchive.h"
|
|
|
|
namespace irr
|
|
{
|
|
namespace video
|
|
{
|
|
class IVideoDriver;
|
|
} // end namespace video
|
|
namespace io
|
|
{
|
|
|
|
class IReadFile;
|
|
class IWriteFile;
|
|
class IFileList;
|
|
class IAttributes;
|
|
|
|
//! The FileSystem manages files and archives and provides access to them.
|
|
/** It manages where files are, so that modules which use the the IO do not
|
|
need to know where every file is located. A file could be in a .zip-Archive or
|
|
as file on disk, using the IFileSystem makes no difference to this. */
|
|
class IFileSystem : public virtual IReferenceCounted
|
|
{
|
|
public:
|
|
//! Opens a file for read access.
|
|
/** \param filename: Name of file to open.
|
|
\return Pointer to the created file interface.
|
|
The returned pointer should be dropped when no longer needed.
|
|
See IReferenceCounted::drop() for more information. */
|
|
virtual IReadFile *createAndOpenFile(const path &filename) = 0;
|
|
|
|
//! Creates an IReadFile interface for accessing memory like a file.
|
|
/** This allows you to use a pointer to memory where an IReadFile is requested.
|
|
\param memory: A pointer to the start of the file in memory
|
|
\param len: The length of the memory in bytes
|
|
\param fileName: The name given to this file
|
|
\param deleteMemoryWhenDropped: True if the memory should be deleted
|
|
along with the IReadFile when it is dropped.
|
|
\return Pointer to the created file interface.
|
|
The returned pointer should be dropped when no longer needed.
|
|
See IReferenceCounted::drop() for more information.
|
|
*/
|
|
virtual IReadFile *createMemoryReadFile(const void *memory, s32 len, const path &fileName, bool deleteMemoryWhenDropped = false) = 0;
|
|
|
|
//! Creates an IReadFile interface for accessing files inside files.
|
|
/** This is useful e.g. for archives.
|
|
\param fileName: The name given to this file
|
|
\param alreadyOpenedFile: Pointer to the enclosing file
|
|
\param pos: Start of the file inside alreadyOpenedFile
|
|
\param areaSize: The length of the file
|
|
\return A pointer to the created file interface.
|
|
The returned pointer should be dropped when no longer needed.
|
|
See IReferenceCounted::drop() for more information.
|
|
*/
|
|
virtual IReadFile *createLimitReadFile(const path &fileName,
|
|
IReadFile *alreadyOpenedFile, long pos, long areaSize) = 0;
|
|
|
|
//! Creates an IWriteFile interface for accessing memory like a file.
|
|
/** This allows you to use a pointer to memory where an IWriteFile is requested.
|
|
You are responsible for allocating enough memory.
|
|
\param memory: A pointer to the start of the file in memory (allocated by you)
|
|
\param len: The length of the memory in bytes
|
|
\param fileName: The name given to this file
|
|
\param deleteMemoryWhenDropped: True if the memory should be deleted
|
|
along with the IWriteFile when it is dropped.
|
|
\return Pointer to the created file interface.
|
|
The returned pointer should be dropped when no longer needed.
|
|
See IReferenceCounted::drop() for more information.
|
|
*/
|
|
virtual IWriteFile *createMemoryWriteFile(void *memory, s32 len, const path &fileName, bool deleteMemoryWhenDropped = false) = 0;
|
|
|
|
//! Opens a file for write access.
|
|
/** \param filename: Name of file to open.
|
|
\param append: If the file already exist, all write operations are
|
|
appended to the file.
|
|
\return Pointer to the created file interface. 0 is returned, if the
|
|
file could not created or opened for writing.
|
|
The returned pointer should be dropped when no longer needed.
|
|
See IReferenceCounted::drop() for more information. */
|
|
virtual IWriteFile *createAndWriteFile(const path &filename, bool append = false) = 0;
|
|
|
|
//! Adds an archive to the file system.
|
|
/** After calling this, the Irrlicht Engine will also search and open
|
|
files directly from this archive. This is useful for hiding data from
|
|
the end user, speeding up file access and making it possible to access
|
|
for example Quake3 .pk3 files, which are just renamed .zip files. By
|
|
default Irrlicht supports ZIP, PAK, TAR, PNK, and directories as
|
|
archives. You can provide your own archive types by implementing
|
|
IArchiveLoader and passing an instance to addArchiveLoader.
|
|
Irrlicht supports AES-encrypted zip files, and the advanced compression
|
|
techniques lzma and bzip2.
|
|
\param filename: Filename of the archive to add to the file system.
|
|
\param ignoreCase: If set to true, files in the archive can be accessed without
|
|
writing all letters in the right case.
|
|
\param ignorePaths: If set to true, files in the added archive can be accessed
|
|
without its complete path.
|
|
\param archiveType: If no specific E_FILE_ARCHIVE_TYPE is selected then
|
|
the type of archive will depend on the extension of the file name. If
|
|
you use a different extension then you can use this parameter to force
|
|
a specific type of archive.
|
|
\param password An optional password, which is used in case of encrypted archives.
|
|
\param retArchive A pointer that will be set to the archive that is added.
|
|
\return True if the archive was added successfully, false if not. */
|
|
virtual bool addFileArchive(const path &filename, bool ignoreCase = true,
|
|
bool ignorePaths = true,
|
|
E_FILE_ARCHIVE_TYPE archiveType = EFAT_UNKNOWN,
|
|
const core::stringc &password = "",
|
|
IFileArchive **retArchive = 0) = 0;
|
|
|
|
//! Adds an archive to the file system.
|
|
/** After calling this, the Irrlicht Engine will also search and open
|
|
files directly from this archive. This is useful for hiding data from
|
|
the end user, speeding up file access and making it possible to access
|
|
for example Quake3 .pk3 files, which are just renamed .zip files. By
|
|
default Irrlicht supports ZIP, PAK, TAR, PNK, and directories as
|
|
archives. You can provide your own archive types by implementing
|
|
IArchiveLoader and passing an instance to addArchiveLoader.
|
|
Irrlicht supports AES-encrypted zip files, and the advanced compression
|
|
techniques lzma and bzip2.
|
|
If you want to add a directory as an archive, prefix its name with a
|
|
slash in order to let Irrlicht recognize it as a folder mount (mypath/).
|
|
Using this technique one can build up a search order, because archives
|
|
are read first, and can be used more easily with relative filenames.
|
|
\param file: Archive to add to the file system.
|
|
\param ignoreCase: If set to true, files in the archive can be accessed without
|
|
writing all letters in the right case.
|
|
\param ignorePaths: If set to true, files in the added archive can be accessed
|
|
without its complete path.
|
|
\param archiveType: If no specific E_FILE_ARCHIVE_TYPE is selected then
|
|
the type of archive will depend on the extension of the file name. If
|
|
you use a different extension then you can use this parameter to force
|
|
a specific type of archive.
|
|
\param password An optional password, which is used in case of encrypted archives.
|
|
\param retArchive A pointer that will be set to the archive that is added.
|
|
\return True if the archive was added successfully, false if not. */
|
|
virtual bool addFileArchive(IReadFile *file, bool ignoreCase = true,
|
|
bool ignorePaths = true,
|
|
E_FILE_ARCHIVE_TYPE archiveType = EFAT_UNKNOWN,
|
|
const core::stringc &password = "",
|
|
IFileArchive **retArchive = 0) = 0;
|
|
|
|
//! Adds an archive to the file system.
|
|
/** \param archive: The archive to add to the file system.
|
|
\return True if the archive was added successfully, false if not. */
|
|
virtual bool addFileArchive(IFileArchive *archive) = 0;
|
|
|
|
//! Get the number of archives currently attached to the file system
|
|
virtual u32 getFileArchiveCount() const = 0;
|
|
|
|
//! Removes an archive from the file system.
|
|
/** This will close the archive and free any file handles, but will not
|
|
close resources which have already been loaded and are now cached, for
|
|
example textures and meshes.
|
|
\param index: The index of the archive to remove
|
|
\return True on success, false on failure */
|
|
virtual bool removeFileArchive(u32 index) = 0;
|
|
|
|
//! Removes an archive from the file system.
|
|
/** This will close the archive and free any file handles, but will not
|
|
close resources which have already been loaded and are now cached, for
|
|
example textures and meshes. Note that a relative filename might be
|
|
interpreted differently on each call, depending on the current working
|
|
directory. In case you want to remove an archive that was added using
|
|
a relative path name, you have to change to the same working directory
|
|
again. This means, that the filename given on creation is not an
|
|
identifier for the archive, but just a usual filename that is used for
|
|
locating the archive to work with.
|
|
\param filename The archive pointed to by the name will be removed
|
|
\return True on success, false on failure */
|
|
virtual bool removeFileArchive(const path &filename) = 0;
|
|
|
|
//! Removes an archive from the file system.
|
|
/** This will close the archive and free any file handles, but will not
|
|
close resources which have already been loaded and are now cached, for
|
|
example textures and meshes.
|
|
\param archive The archive to remove.
|
|
\return True on success, false on failure */
|
|
virtual bool removeFileArchive(const IFileArchive *archive) = 0;
|
|
|
|
//! Changes the search order of attached archives.
|
|
/**
|
|
\param sourceIndex: The index of the archive to change
|
|
\param relative: The relative change in position, archives with a lower index are searched first */
|
|
virtual bool moveFileArchive(u32 sourceIndex, s32 relative) = 0;
|
|
|
|
//! Get the archive at a given index.
|
|
virtual IFileArchive *getFileArchive(u32 index) = 0;
|
|
|
|
//! Adds an external archive loader to the engine.
|
|
/** Use this function to add support for new archive types to the
|
|
engine, for example proprietary or encrypted file storage. */
|
|
virtual void addArchiveLoader(IArchiveLoader *loader) = 0;
|
|
|
|
//! Gets the number of archive loaders currently added
|
|
virtual u32 getArchiveLoaderCount() const = 0;
|
|
|
|
//! Retrieve the given archive loader
|
|
/** \param index The index of the loader to retrieve. This parameter is an 0-based
|
|
array index.
|
|
\return A pointer to the specified loader, 0 if the index is incorrect. */
|
|
virtual IArchiveLoader *getArchiveLoader(u32 index) const = 0;
|
|
|
|
//! Get the current working directory.
|
|
/** \return Current working directory as a string. */
|
|
virtual const path &getWorkingDirectory() = 0;
|
|
|
|
//! Changes the current working directory.
|
|
/** \param newDirectory: A string specifying the new working directory.
|
|
The string is operating system dependent. Under Windows it has
|
|
the form "<drive>:\<directory>\<sudirectory>\<..>". An example would be: "C:\Windows\"
|
|
\return True if successful, otherwise false. */
|
|
virtual bool changeWorkingDirectoryTo(const path &newDirectory) = 0;
|
|
|
|
//! Converts a relative path to an absolute (unique) path, resolving symbolic links if required
|
|
/** \param filename Possibly relative file or directory name to query.
|
|
\result Absolute filename which points to the same file. */
|
|
virtual path getAbsolutePath(const path &filename) const = 0;
|
|
|
|
//! Get the directory a file is located in.
|
|
/** \param filename: The file to get the directory from.
|
|
\return String containing the directory of the file. */
|
|
virtual path getFileDir(const path &filename) const = 0;
|
|
|
|
//! Get the base part of a filename, i.e. the name without the directory part.
|
|
/** If no directory is prefixed, the full name is returned.
|
|
\param filename: The file to get the basename from
|
|
\param keepExtension True if filename with extension is returned otherwise everything
|
|
after the final '.' is removed as well. */
|
|
virtual path getFileBasename(const path &filename, bool keepExtension = true) const = 0;
|
|
|
|
//! flatten a path and file name for example: "/you/me/../." becomes "/you"
|
|
virtual path &flattenFilename(path &directory, const path &root = "/") const = 0;
|
|
|
|
//! Get the relative filename, relative to the given directory
|
|
virtual path getRelativeFilename(const path &filename, const path &directory) const = 0;
|
|
|
|
//! Creates a list of files and directories in the current working directory and returns it.
|
|
/** \return a Pointer to the created IFileList is returned. After the list has been used
|
|
it has to be deleted using its IFileList::drop() method.
|
|
See IReferenceCounted::drop() for more information. */
|
|
virtual IFileList *createFileList() = 0;
|
|
|
|
//! Creates an empty filelist
|
|
/** \return a Pointer to the created IFileList is returned. After the list has been used
|
|
it has to be deleted using its IFileList::drop() method.
|
|
See IReferenceCounted::drop() for more information. */
|
|
virtual IFileList *createEmptyFileList(const io::path &path, bool ignoreCase, bool ignorePaths) = 0;
|
|
|
|
//! Set the active type of file system.
|
|
virtual EFileSystemType setFileListSystem(EFileSystemType listType) = 0;
|
|
|
|
//! Determines if a file exists and could be opened.
|
|
/** \param filename is the string identifying the file which should be tested for existence.
|
|
\return True if file exists, and false if it does not exist or an error occurred. */
|
|
virtual bool existFile(const path &filename) const = 0;
|
|
};
|
|
|
|
} // end namespace io
|
|
} // end namespace irr
|