277 lines
14 KiB
C++
277 lines
14 KiB
C++
// Copyright (C) 2002-2009 Nikolaus Gebhardt
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// This file is part of the "Irrlicht Engine".
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// For conditions of distribution and use, see copyright notice in irrlicht.h
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#ifndef __I_FILE_SYSTEM_H_INCLUDED__
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#define __I_FILE_SYSTEM_H_INCLUDED__
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#include "IReferenceCounted.h"
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#include "IXMLReader.h"
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#include "IFileArchive.h"
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namespace irr
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{
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namespace video
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{
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class IVideoDriver;
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} // end namespace video
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namespace io
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{
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class IReadFile;
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class IWriteFile;
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class IFileList;
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class IXMLWriter;
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class IAttributes;
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//! The FileSystem manages files and archives and provides access to them.
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/** It manages where files are, so that modules which use the the IO do not
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need to know where every file is located. A file could be in a .zip-Archive or
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as file on disk, using the IFileSystem makes no difference to this. */
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class IFileSystem : public virtual IReferenceCounted
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{
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public:
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//! Opens a file for read access.
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/** \param filename: Name of file to open.
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\return Returns a pointer to the created file interface.
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The returned pointer should be dropped when no longer needed.
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See IReferenceCounted::drop() for more information. */
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virtual IReadFile* createAndOpenFile(const core::string<c16>& filename) =0;
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//! Creates an IReadFile interface for accessing memory like a file.
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/** This allows you to use a pointer to memory where an IReadFile is requested.
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\param memory: A pointer to the start of the file in memory
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\param len: The length of the memory in bytes
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\param fileName: The name given to this file
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\param deleteMemoryWhenDropped: True if the memory should be deleted
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along with the IReadFile when it is dropped.
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\return Returns a pointer to the created file interface.
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The returned pointer should be dropped when no longer needed.
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See IReferenceCounted::drop() for more information.
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*/
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virtual IReadFile* createMemoryReadFile(void* memory, s32 len, const core::string<c16>& fileName, bool deleteMemoryWhenDropped=false) =0;
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//! Creates an IReadFile interface for accessing files inside files.
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/** This is useful e.g. for archives.
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\param fileName: The name given to this file
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\param alreadyOpenedFile: Pointer to the enclosing file
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\param pos: Start of the file inside alreadyOpenedFile
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\param areaSize: The length of the file
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\return A pointer to the created file interface.
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The returned pointer should be dropped when no longer needed.
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See IReferenceCounted::drop() for more information.
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*/
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virtual IReadFile* createLimitReadFile(const core::string<c16>& fileName,
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IReadFile* alreadyOpenedFile, long pos, long areaSize) =0;
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//! Creates an IWriteFile interface for accessing memory like a file.
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/** This allows you to use a pointer to memory where an IWriteFile is requested.
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You are responsible for allocating enough memory.
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\param memory: A pointer to the start of the file in memory (allocated by you)
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\param len: The length of the memory in bytes
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\param fileName: The name given to this file
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\param deleteMemoryWhenDropped: True if the memory should be deleted
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along with the IWriteFile when it is dropped.
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\return Returns a pointer to the created file interface.
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The returned pointer should be dropped when no longer needed.
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See IReferenceCounted::drop() for more information.
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*/
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virtual IWriteFile* createMemoryWriteFile(void* memory, s32 len, const core::string<c16>& fileName, bool deleteMemoryWhenDropped=false) =0;
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//! Opens a file for write access.
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/** \param filename: Name of file to open.
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\param append: If the file already exist, all write operations are
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appended to the file.
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\return Returns a pointer to the created file interface. 0 is returned, if the
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file could not created or opened for writing.
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The returned pointer should be dropped when no longer needed.
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See IReferenceCounted::drop() for more information. */
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virtual IWriteFile* createAndWriteFile(const core::string<c16>& filename, bool append=false) =0;
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//! Adds an archive to the file system.
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/** After calling this, the Irrlicht Engine will search and open files directly from this archive too.
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This is useful for hiding data from the end user, speeding up file access and making it possible to
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access for example Quake3 .pk3 files, which are nothing different than .zip files.
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\param filename: Filename of the zip archive to add to the file system.
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\param ignoreCase: If set to true, files in the archive can be accessed without
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writing all letters in the right case.
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\param ignorePaths: If set to true, files in the added archive can be accessed
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without its complete path.
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\return Returns true if the archive was added successful, false if not. */
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virtual bool registerFileArchive(const core::string<c16>& filename, bool ignoreCase=true, bool ignorePaths=true) =0;
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//! Adds an external archive loader to the engine.
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virtual void addArchiveLoader(IArchiveLoader* loader) =0;
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//! return the amount of currently attached Archives
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virtual u32 getFileArchiveCount() const =0;
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//! removes an archive from the file system.
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virtual bool unregisterFileArchive(u32 index) =0;
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//! removes an archive from the file system.
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virtual bool unregisterFileArchive(const core::string<c16>& filename) =0;
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//! move the hirarchy of the filesystem. moves sourceIndex relative up or down
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virtual bool moveFileArchive(u32 sourceIndex, s32 relative) =0;
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//! get the Archive number index
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virtual IFileArchive* getFileArchive(u32 index) =0;
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//! Adds an zip archive to the file system.
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/** After calling this, the Irrlicht Engine will search and open files directly from this archive too.
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This is useful for hiding data from the end user, speeding up file access and making it possible to
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access for example Quake3 .pk3 files, which are nothing different than .zip files.
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\param filename: Filename of the zip archive to add to the file system.
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\param ignoreCase: If set to true, files in the archive can be accessed without
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writing all letters in the right case.
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\param ignorePaths: If set to true, files in the added archive can be accessed
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without its complete path.
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\return Returns true if the archive was added successful, false if not. */
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virtual bool addZipFileArchive(const c8* filename, bool ignoreCase=true, bool ignorePaths=true)
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{
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return registerFileArchive(filename, ignoreCase, ignorePaths);
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}
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//! Adds an unzipped archive (or basedirectory with subdirectories..) to the file system.
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/** Useful for handling data which will be in a zip file
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\param filename: Filename of the unzipped zip archive base directory to add to the file system.
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\param ignoreCase: If set to true, files in the archive can be accessed without
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writing all letters in the right case.
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\param ignorePaths: If set to true, files in the added archive can be accessed
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without its complete path.
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\return Returns true if the archive was added successful, false if not. */
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virtual bool addFolderFileArchive(const c8* filename, bool ignoreCase=true, bool ignorePaths=true)
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{
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return registerFileArchive(filename, ignoreCase, ignorePaths);
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}
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//! Adds an pak archive to the file system.
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/** After calling this, the Irrlicht Engine will search and open files directly from this archive too.
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This is useful for hiding data from the end user, speeding up file access and making it possible to
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access for example Quake2/KingPin/Hexen2 .pak files
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\param filename: Filename of the pak archive to add to the file system.
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\param ignoreCase: If set to true, files in the archive can be accessed without
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writing all letters in the right case.
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\param ignorePaths: If set to true, files in the added archive can be accessed
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without its complete path.(should not use with Quake2 paks
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\return Returns true if the archive was added successful, false if not. */
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virtual bool addPakFileArchive(const c8* filename, bool ignoreCase=true, bool ignorePaths=true)
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{
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return registerFileArchive(filename, ignoreCase, ignorePaths);
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}
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//! Get the current working directory.
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/** \return Current working directory as a string. */
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virtual const core::string<c16>& getWorkingDirectory() =0;
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//! Changes the current working directory.
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/** \param newDirectory: A string specifying the new working directory.
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The string is operating system dependent. Under Windows it has
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the form "<drive>:\<directory>\<sudirectory>\<..>". An example would be: "C:\Windows\"
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\return True if successful, otherwise false. */
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virtual bool changeWorkingDirectoryTo(const core::string<c16>& newDirectory) =0;
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//! Converts a relative path to an absolute (unique) path, resolving symbolic links if required
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/** \param filename Possibly relative filename begin queried.
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\result Absolute filename which points to the same file. */
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virtual core::string<c16> getAbsolutePath(const core::string<c16>& filename) const =0;
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//! Returns the directory a file is located in.
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/** \param filename: The file to get the directory from.
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\return String containing the directory of the file. */
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virtual core::string<c16> getFileDir(const core::string<c16>& filename) const =0;
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//! Returns the base part of a filename, i.e. the name without the directory part.
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/** If no directory is prefixed, the full name is returned.
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\param filename: The file to get the basename from
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\param keepExtension True if filename with extension is returned otherwise everything
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after the final '.' is removed as well. */
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virtual core::string<c16> getFileBasename(const core::string<c16>& filename, bool keepExtension=true) const =0;
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//! flatten a path and file name for example: "/you/me/../." becomes "/you"
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virtual core::string<c16>& flattenFilename(core::string<c16>& directory, const core::string<c16>& root="/") const =0;
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//! Creates a list of files and directories in the current working directory and returns it.
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/** \return a Pointer to the created IFileList is returned. After the list has been used
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it has to be deleted using its IFileList::drop() method.
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See IReferenceCounted::drop() for more information. */
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virtual IFileList* createFileList() =0;
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//! Set the active type of file system.
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virtual EFileSystemType setFileListSystem(EFileSystemType listType) =0;
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//! Determines if a file exists and could be opened.
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/** \param filename is the string identifying the file which should be tested for existence.
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\return Returns true if file exists, and false if it does not exist or an error occured. */
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virtual bool existFile(const core::string<c16>& filename) const =0;
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//! Creates a XML Reader from a file which returns all parsed strings as wide characters (wchar_t*).
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/** Use createXMLReaderUTF8() if you prefer char* instead of wchar_t*. See IIrrXMLReader for
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more information on how to use the parser.
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\return 0, if file could not be opened, otherwise a pointer to the created
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IXMLReader is returned. After use, the reader
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has to be deleted using its IXMLReader::drop() method.
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See IReferenceCounted::drop() for more information. */
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virtual IXMLReader* createXMLReader(const core::string<c16>& filename) =0;
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//! Creates a XML Reader from a file which returns all parsed strings as wide characters (wchar_t*).
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/** Use createXMLReaderUTF8() if you prefer char* instead of wchar_t*. See IIrrXMLReader for
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more information on how to use the parser.
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\return 0, if file could not be opened, otherwise a pointer to the created
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IXMLReader is returned. After use, the reader
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has to be deleted using its IXMLReader::drop() method.
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See IReferenceCounted::drop() for more information. */
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virtual IXMLReader* createXMLReader(IReadFile* file) =0;
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//! Creates a XML Reader from a file which returns all parsed strings as ASCII/UTF-8 characters (char*).
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/** Use createXMLReader() if you prefer wchar_t* instead of char*. See IIrrXMLReader for
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more information on how to use the parser.
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\return 0, if file could not be opened, otherwise a pointer to the created
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IXMLReader is returned. After use, the reader
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has to be deleted using its IXMLReaderUTF8::drop() method.
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See IReferenceCounted::drop() for more information. */
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virtual IXMLReaderUTF8* createXMLReaderUTF8(const core::string<c16>& filename) =0;
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//! Creates a XML Reader from a file which returns all parsed strings as ASCII/UTF-8 characters (char*).
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/** Use createXMLReader() if you prefer wchar_t* instead of char*. See IIrrXMLReader for
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more information on how to use the parser.
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\return 0, if file could not be opened, otherwise a pointer to the created
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IXMLReader is returned. After use, the reader
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has to be deleted using its IXMLReaderUTF8::drop() method.
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See IReferenceCounted::drop() for more information. */
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virtual IXMLReaderUTF8* createXMLReaderUTF8(IReadFile* file) =0;
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//! Creates a XML Writer from a file.
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/** \return 0, if file could not be opened, otherwise a pointer to the created
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IXMLWriter is returned. After use, the reader
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has to be deleted using its IXMLWriter::drop() method.
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See IReferenceCounted::drop() for more information. */
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virtual IXMLWriter* createXMLWriter(const core::string<c16>& filename) =0;
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//! Creates a XML Writer from a file.
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/** \return 0, if file could not be opened, otherwise a pointer to the created
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IXMLWriter is returned. After use, the reader
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has to be deleted using its IXMLWriter::drop() method.
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See IReferenceCounted::drop() for more information. */
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virtual IXMLWriter* createXMLWriter(IWriteFile* file) =0;
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//! Creates a new empty collection of attributes, usable for serialization and more.
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/** \param driver: Video driver to be used to load textures when specified as attribute values.
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Can be null to prevent automatic texture loading by attributes.
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\return Pointer to the created object.
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If you no longer need the object, you should call IAttributes::drop().
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See IReferenceCounted::drop() for more information. */
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virtual IAttributes* createEmptyAttributes(video::IVideoDriver* driver=0) =0;
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};
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} // end namespace io
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} // end namespace irr
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#endif
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