dosbox-wii/include/dos_system.h
2010-08-11 04:08:22 +00:00

273 lines
8.5 KiB
C++

/*
* Copyright (C) 2002-2010 The DOSBox Team
*
* This program 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.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/* $Id: dos_system.h,v 1.47 2009-03-04 21:08:22 c2woody Exp $ */
#ifndef DOSBOX_DOS_SYSTEM_H
#define DOSBOX_DOS_SYSTEM_H
#include <vector>
#ifndef DOSBOX_DOSBOX_H
#include "dosbox.h"
#endif
#ifndef DOSBOX_CROSS_H
#include "cross.h"
#endif
#ifndef DOSBOX_SUPPORT_H
#include "support.h"
#endif
#ifndef DOSBOX_MEM_H
#include "mem.h"
#endif
#define DOS_NAMELENGTH 12
#define DOS_NAMELENGTH_ASCII (DOS_NAMELENGTH+1)
#define DOS_FCBNAME 15
#define DOS_DIRDEPTH 8
#define DOS_PATHLENGTH 80
#define DOS_TEMPSIZE 1024
enum {
DOS_ATTR_READ_ONLY= 0x01,
DOS_ATTR_HIDDEN= 0x02,
DOS_ATTR_SYSTEM= 0x04,
DOS_ATTR_VOLUME= 0x08,
DOS_ATTR_DIRECTORY= 0x10,
DOS_ATTR_ARCHIVE= 0x20,
DOS_ATTR_DEVICE= 0x40
};
struct FileStat_Block {
Bit32u size;
Bit16u time;
Bit16u date;
Bit16u attr;
};
class DOS_DTA;
class DOS_File {
public:
DOS_File():flags(0) { name=0; refCtr = 0; hdrive=0xff; };
DOS_File(const DOS_File& orig);
DOS_File & operator= (const DOS_File & orig);
virtual ~DOS_File(){if(name) delete [] name;};
virtual bool Read(Bit8u * data,Bit16u * size)=0;
virtual bool Write(Bit8u * data,Bit16u * size)=0;
virtual bool Seek(Bit32u * pos,Bit32u type)=0;
virtual bool Close()=0;
virtual Bit16u GetInformation(void)=0;
virtual void SetName(const char* _name) { if (name) delete[] name; name = new char[strlen(_name)+1]; strcpy(name,_name); }
virtual char* GetName(void) { return name; };
virtual bool IsOpen() { return open; };
virtual bool IsName(const char* _name) { if (!name) return false; return strcasecmp(name,_name)==0; };
virtual void AddRef() { refCtr++; };
virtual Bits RemoveRef() { return --refCtr; };
virtual bool UpdateDateTimeFromHost() { return true; }
void SetDrive(Bit8u drv) { hdrive=drv;}
Bit8u GetDrive(void) { return hdrive;}
Bit32u flags;
Bit16u time;
Bit16u date;
Bit16u attr;
Bits refCtr;
bool open;
char* name;
/* Some Device Specific Stuff */
private:
Bit8u hdrive;
};
class DOS_Device : public DOS_File {
public:
DOS_Device(const DOS_Device& orig):DOS_File(orig) {
devnum=orig.devnum;
open=true;
}
DOS_Device & operator= (const DOS_Device & orig) {
DOS_File::operator=(orig);
devnum=orig.devnum;
open=true;
return *this;
}
DOS_Device():DOS_File(),devnum(0){};
virtual bool Read(Bit8u * data,Bit16u * size);
virtual bool Write(Bit8u * data,Bit16u * size);
virtual bool Seek(Bit32u * pos,Bit32u type);
virtual bool Close();
virtual Bit16u GetInformation(void);
virtual bool ReadFromControlChannel(PhysPt bufptr,Bit16u size,Bit16u * retcode);
virtual bool WriteToControlChannel(PhysPt bufptr,Bit16u size,Bit16u * retcode);
void SetDeviceNumber(Bitu num) { devnum=num;}
private:
Bitu devnum;
};
/* The following variable can be lowered to free up some memory.
* The negative side effect: The stored searches will be turned over faster.
* Should not have impact on systems with few directory entries. */
#define MAX_OPENDIRS 2048
//Can be high as it's only storage (16 bit variable)
class DOS_Drive_Cache {
public:
DOS_Drive_Cache (void);
DOS_Drive_Cache (const char* path);
~DOS_Drive_Cache (void);
enum TDirSort { NOSORT, ALPHABETICAL, DIRALPHABETICAL, ALPHABETICALREV, DIRALPHABETICALREV };
void SetBaseDir (const char* path);
void SetDirSort (TDirSort sort) { sortDirType = sort; };
bool OpenDir (const char* path, Bit16u& id);
bool ReadDir (Bit16u id, char* &result);
void ExpandName (char* path);
char* GetExpandName (const char* path);
bool GetShortName (const char* fullname, char* shortname);
bool FindFirst (char* path, Bit16u& id);
bool FindNext (Bit16u id, char* &result);
void CacheOut (const char* path, bool ignoreLastDir = false);
void AddEntry (const char* path, bool checkExist = false);
void DeleteEntry (const char* path, bool ignoreLastDir = false);
void EmptyCache (void);
void SetLabel (const char* name,bool cdrom,bool allowupdate);
char* GetLabel (void) { return label; };
class CFileInfo {
public:
CFileInfo(void) {
orgname[0] = shortname[0] = 0;
isDir = false;
id = MAX_OPENDIRS;
nextEntry = shortNr = 0;
}
~CFileInfo(void) {
for (Bit32u i=0; i<fileList.size(); i++) delete fileList[i];
fileList.clear();
longNameList.clear();
};
char orgname [CROSS_LEN];
char shortname [DOS_NAMELENGTH_ASCII];
bool isDir;
Bit16u id;
Bitu nextEntry;
Bitu shortNr;
// contents
std::vector<CFileInfo*> fileList;
std::vector<CFileInfo*> longNameList;
};
private:
void ClearFileInfo(CFileInfo *dir);
void DeleteFileInfo(CFileInfo *dir);
bool RemoveTrailingDot (char* shortname);
Bits GetLongName (CFileInfo* info, char* shortname);
void CreateShortName (CFileInfo* dir, CFileInfo* info);
Bitu CreateShortNameID (CFileInfo* dir, const char* name);
int CompareShortname (const char* compareName, const char* shortName);
bool SetResult (CFileInfo* dir, char * &result, Bitu entryNr);
bool IsCachedIn (CFileInfo* dir);
CFileInfo* FindDirInfo (const char* path, char* expandedPath);
bool RemoveSpaces (char* str);
bool OpenDir (CFileInfo* dir, const char* path, Bit16u& id);
void CreateEntry (CFileInfo* dir, const char* name, bool query_directory);
void CopyEntry (CFileInfo* dir, CFileInfo* from);
Bit16u GetFreeID (CFileInfo* dir);
void Clear (void);
CFileInfo* dirBase;
char dirPath [CROSS_LEN];
char basePath [CROSS_LEN];
bool dirFirstTime;
TDirSort sortDirType;
CFileInfo* save_dir;
char save_path [CROSS_LEN];
char save_expanded [CROSS_LEN];
Bit16u srchNr;
CFileInfo* dirSearch [MAX_OPENDIRS];
char dirSearchName [MAX_OPENDIRS];
CFileInfo* dirFindFirst [MAX_OPENDIRS];
Bit16u nextFreeFindFirst;
char label [CROSS_LEN];
bool updatelabel;
};
class DOS_Drive {
public:
DOS_Drive();
virtual ~DOS_Drive(){};
virtual bool FileOpen(DOS_File * * file,char * name,Bit32u flags)=0;
virtual bool FileCreate(DOS_File * * file,char * name,Bit16u attributes)=0;
virtual bool FileUnlink(char * _name)=0;
virtual bool RemoveDir(char * _dir)=0;
virtual bool MakeDir(char * _dir)=0;
virtual bool TestDir(char * _dir)=0;
virtual bool FindFirst(char * _dir,DOS_DTA & dta,bool fcb_findfirst=false)=0;
virtual bool FindNext(DOS_DTA & dta)=0;
virtual bool GetFileAttr(char * name,Bit16u * attr)=0;
virtual bool Rename(char * oldname,char * newname)=0;
virtual bool AllocationInfo(Bit16u * _bytes_sector,Bit8u * _sectors_cluster,Bit16u * _total_clusters,Bit16u * _free_clusters)=0;
virtual bool FileExists(const char* name)=0;
virtual bool FileStat(const char* name, FileStat_Block * const stat_block)=0;
virtual Bit8u GetMediaByte(void)=0;
virtual void SetDir(const char* path) { strcpy(curdir,path); };
virtual void EmptyCache(void) { dirCache.EmptyCache(); };
virtual bool isRemote(void)=0;
virtual bool isRemovable(void)=0;
virtual Bits UnMount(void)=0;
char * GetInfo(void);
char curdir[DOS_PATHLENGTH];
char info[256];
/* Can be overridden for example in iso images */
virtual char const * GetLabel(){return dirCache.GetLabel();};
DOS_Drive_Cache dirCache;
// disk cycling functionality (request resources)
virtual void Activate(void) {};
};
enum { OPEN_READ=0,OPEN_WRITE=1,OPEN_READWRITE=2, DOS_NOT_INHERIT=128};
enum { DOS_SEEK_SET=0,DOS_SEEK_CUR=1,DOS_SEEK_END=2};
/*
A multiplex handler should read the registers to check what function is being called
If the handler returns false dos will stop checking other handlers
*/
typedef bool (MultiplexHandler)(void);
void DOS_AddMultiplexHandler(MultiplexHandler * handler);
void DOS_DelMultiplexHandler(MultiplexHandler * handler);
/* AddDevice stores the pointer to a created device */
void DOS_AddDevice(DOS_Device * adddev);
/* DelDevice destroys the device that is pointed to. */
void DOS_DelDevice(DOS_Device * dev);
void VFILE_Register(const char * name,Bit8u * data,Bit32u size);
#endif