irrlicht/source/Irrlicht/CPakReader.h

127 lines
3.1 KiB
C++

// Copyright (C) 2002-2009 Nikolaus Gebhardt
// This file is part of the "Irrlicht Engine".
// For conditions of distribution and use, see copyright notice in irrlicht.h
#ifndef __C_PAK_READER_H_INCLUDED__
#define __C_PAK_READER_H_INCLUDED__
#include "IReferenceCounted.h"
#include "IReadFile.h"
#include "irrArray.h"
#include "irrString.h"
#include "IFileSystem.h"
namespace irr
{
namespace io
{
struct SPAKFileHeader
{
c8 tag[4];
u32 offset;
u32 length;
};
struct SPakFileEntry: public IFileArchiveEntry
{
core::string<c16> pakFileName;
u32 pos;
u32 length;
};
//! Archiveloader capable of loading PAK Archives
class CArchiveLoaderPAK : public IArchiveLoader
{
public:
//! Constructor
CArchiveLoaderPAK(io::IFileSystem* fs);
//! destructor
virtual ~CArchiveLoaderPAK();
//! returns true if the file maybe is able to be loaded by this class
//! based on the file extension (e.g. ".zip")
virtual bool isALoadableFileFormat(const core::string<c16>& filename) const;
//! Creates an archive from the filename
/** \param file File handle to check.
\return Pointer to newly created archive, or 0 upon error. */
virtual IFileArchive* createArchive(const core::string<c16>& filename, bool ignoreCase, bool ignorePaths) const;
//! Check if the file might be loaded by this class
/** Check might look into the file.
\param file File handle to check.
\return True if file seems to be loadable. */
virtual bool isALoadableFileFormat(io::IReadFile* file) const;
//! creates/loads an archive from the file.
//! \return Pointer to the created archive. Returns 0 if loading failed.
virtual io::IFileArchive* createArchive(io::IReadFile* file, bool ignoreCase, bool ignorePaths) const;
private:
io::IFileSystem* FileSystem;
};
//! reads from pak
class CPakReader : public IFileArchive
{
public:
CPakReader(IReadFile* file, bool ignoreCase, bool ignorePaths);
virtual ~CPakReader();
//! opens a file by file name
virtual IReadFile* openFile(const core::string<c16>& filename);
//! opens a file by index
IReadFile* openFile(s32 index);
//! returns count of files in archive
virtual u32 getFileCount();
//! returns data of file
virtual const IFileArchiveEntry* getFileInfo(u32 index);
//! returns fileindex
virtual s32 findFile(const core::string<c16>& filename);
//! get the class Type
virtual const core::string<c16>& getArchiveType() { return Type; }
//! return the id of the file Archive
virtual const core::string<c16>& getArchiveName ()
{
return File->getFileName();
}
private:
core::string<c16> Type;
//! scans for a local header, returns false if there is no more local file header.
bool scanLocalHeader();
//! splits filename from zip file into useful filenames and paths
void extractFilename(SPakFileEntry* entry);
IReadFile* File;
SPAKFileHeader header;
core::array<SPakFileEntry> FileList;
bool IgnoreCase;
bool IgnorePaths;
};
} // end namespace io
} // end namespace irr
#endif