mirror of
https://github.com/rn10950/RetroZilla.git
synced 2024-11-16 20:40:11 +01:00
382 lines
20 KiB
C
382 lines
20 KiB
C
|
// %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
|
|
// % Project : GUSI - Grand Unified Socket Interface
|
||
|
|
// % File : GUSIDevice.nw - Devices
|
||
|
|
// % Author : Matthias Neeracher
|
||
|
|
// % Language : C++
|
||
|
|
// %
|
||
|
|
// % $Log: GUSIDevice.h,v $
|
||
|
|
// % Revision 1.1 2001/03/11 22:34:48 sgehani%netscape.com
|
||
|
|
// % First Checked In.
|
||
|
|
// %
|
||
|
|
// % Revision 1.13 2000/06/12 04:22:30 neeri
|
||
|
|
// % Return values, not references
|
||
|
|
// %
|
||
|
|
// % Revision 1.12 2000/05/23 06:58:03 neeri
|
||
|
|
// % Improve formatting
|
||
|
|
// %
|
||
|
|
// % Revision 1.11 2000/03/15 07:22:06 neeri
|
||
|
|
// % Enforce alignment choices
|
||
|
|
// %
|
||
|
|
// % Revision 1.10 2000/03/06 06:30:30 neeri
|
||
|
|
// % Check for nonexistent device
|
||
|
|
// %
|
||
|
|
// % Revision 1.9 1999/08/26 05:45:01 neeri
|
||
|
|
// % Fixes for literate edition of source code
|
||
|
|
// %
|
||
|
|
// % Revision 1.8 1999/07/19 06:21:02 neeri
|
||
|
|
// % Add mkdir/rmdir, fix various file manager related bugs
|
||
|
|
// %
|
||
|
|
// % Revision 1.7 1999/05/29 06:26:42 neeri
|
||
|
|
// % Fixed header guards
|
||
|
|
// %
|
||
|
|
// % Revision 1.6 1999/03/17 09:05:07 neeri
|
||
|
|
// % Added GUSITimer, expanded docs
|
||
|
|
// %
|
||
|
|
// % Revision 1.5 1998/11/22 23:06:52 neeri
|
||
|
|
// % Releasing 2.0a4 in a hurry
|
||
|
|
// %
|
||
|
|
// % Revision 1.4 1998/10/25 11:37:38 neeri
|
||
|
|
// % More configuration hooks
|
||
|
|
// %
|
||
|
|
// % Revision 1.3 1998/10/11 16:45:13 neeri
|
||
|
|
// % Ready to release 2.0a2
|
||
|
|
// %
|
||
|
|
// % Revision 1.2 1998/08/01 21:28:57 neeri
|
||
|
|
// % Add directory operations
|
||
|
|
// %
|
||
|
|
// % Revision 1.1 1998/01/25 21:02:45 neeri
|
||
|
|
// % Engine implemented, except for signals & scheduling
|
||
|
|
// %
|
||
|
|
// % Revision 1.1 1996/12/16 02:12:40 neeri
|
||
|
|
// % TCP Sockets sort of work
|
||
|
|
// %
|
||
|
|
// %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
|
|
//
|
||
|
|
// \chapter{Devices}
|
||
|
|
//
|
||
|
|
// Similar to the creation of sockets, operations on files like opening or
|
||
|
|
// renaming them need to be dispatched to a variety of special cases (Most of
|
||
|
|
// them of the form "Dev:" preceded by a device name). Analogous to the
|
||
|
|
// [[GUSISocketFactory]] subclasses registered in a [[GUSISocketDomainRegistry]],
|
||
|
|
// we therefore have subclasses of [[GUSIDevice]] registered in a
|
||
|
|
// [[GUSIDeviceRegistry]], although the details of the two registries are
|
||
|
|
// quite different.
|
||
|
|
//
|
||
|
|
// During resolution of a file name, the name and information about it is passed
|
||
|
|
// around in a [[GUSIFileToken]].
|
||
|
|
//
|
||
|
|
// <GUSIDevice.h>=
|
||
|
|
#ifndef _GUSIDevice_
|
||
|
|
#define _GUSIDevice_
|
||
|
|
|
||
|
|
#ifdef GUSI_SOURCE
|
||
|
|
|
||
|
|
#include "GUSISocket.h"
|
||
|
|
#include "GUSIFileSpec.h"
|
||
|
|
|
||
|
|
#include <dirent.h>
|
||
|
|
#include <utime.h>
|
||
|
|
|
||
|
|
#include <ConditionalMacros.h>
|
||
|
|
|
||
|
|
#if PRAGMA_STRUCT_ALIGN
|
||
|
|
#pragma options align=native
|
||
|
|
#endif
|
||
|
|
|
||
|
|
// \section{Definition of [[GUSIFileToken]]}
|
||
|
|
//
|
||
|
|
// A [[GUSIFileToken]] consists of a pointer to the name as a C string, of a pointer
|
||
|
|
// to the [[GUSIDevice]] the token resolves to, and, if the token refers to a
|
||
|
|
// file name rather than a device name, a pointer to a [[GUSIFileSpec]]. Since
|
||
|
|
// depending on the call, different [[GUSIDevice]] subclasses may handle it, a
|
||
|
|
// request code has to be passed to the constructor, too.
|
||
|
|
//
|
||
|
|
// <Definition of class [[GUSIFileToken]]>=
|
||
|
|
class GUSIDevice;
|
||
|
|
|
||
|
|
class GUSIFileToken : public GUSIFileSpec {
|
||
|
|
public:
|
||
|
|
enum Request {
|
||
|
|
// \section{Operations on Devices}
|
||
|
|
//
|
||
|
|
// The [[open]] operation creates a new socket for the specified path or file
|
||
|
|
// specification.
|
||
|
|
//
|
||
|
|
// <Requests for [[GUSIFileToken]]>=
|
||
|
|
kWillOpen,
|
||
|
|
// [[remove]] deletes a path or file specification.
|
||
|
|
//
|
||
|
|
// <Requests for [[GUSIFileToken]]>=
|
||
|
|
kWillRemove,
|
||
|
|
// [[rename]] renames a path or file specification.
|
||
|
|
//
|
||
|
|
// <Requests for [[GUSIFileToken]]>=
|
||
|
|
kWillRename,
|
||
|
|
// [[stat]] gathers statistical data about a file or directory.
|
||
|
|
//
|
||
|
|
// <Requests for [[GUSIFileToken]]>=
|
||
|
|
kWillStat,
|
||
|
|
// [[chmod]] changes file modes, to the extent that this is meaningful on MacOS.
|
||
|
|
//
|
||
|
|
// <Requests for [[GUSIFileToken]]>=
|
||
|
|
kWillChmod,
|
||
|
|
// [[utime]] bumps a file's modification time.
|
||
|
|
//
|
||
|
|
// <Requests for [[GUSIFileToken]]>=
|
||
|
|
kWillUtime,
|
||
|
|
// [[access]] checks access permissions for a file.
|
||
|
|
//
|
||
|
|
// <Requests for [[GUSIFileToken]]>=
|
||
|
|
kWillAccess,
|
||
|
|
// [[mkdir]] creates a directory.
|
||
|
|
//
|
||
|
|
// <Requests for [[GUSIFileToken]]>=
|
||
|
|
kWillMkdir,
|
||
|
|
// [[rmdir]] deletes a directory.
|
||
|
|
//
|
||
|
|
// <Requests for [[GUSIFileToken]]>=
|
||
|
|
kWillRmdir,
|
||
|
|
// [[opendir]] opens a directory handle on the given directory.
|
||
|
|
//
|
||
|
|
// <Requests for [[GUSIFileToken]]>=
|
||
|
|
kWillOpendir,
|
||
|
|
// [[symlink]] creates a symbolic link to a file.
|
||
|
|
//
|
||
|
|
// <Requests for [[GUSIFileToken]]>=
|
||
|
|
kWillSymlink,
|
||
|
|
// [[readlink]] reads the contents of a symbolic link.
|
||
|
|
//
|
||
|
|
// <Requests for [[GUSIFileToken]]>=
|
||
|
|
kWillReadlink,
|
||
|
|
// [[fgetfileinfo]] and [[fsetfileinfo]] reads and set the type and creator
|
||
|
|
// code of a file.
|
||
|
|
//
|
||
|
|
// <Requests for [[GUSIFileToken]]>=
|
||
|
|
kWillGetfileinfo,
|
||
|
|
kWillSetfileinfo,
|
||
|
|
// [[faccess]] manipulates MPW properties of files.
|
||
|
|
//
|
||
|
|
// <Requests for [[GUSIFileToken]]>=
|
||
|
|
kWillFaccess,
|
||
|
|
kNoRequest
|
||
|
|
};
|
||
|
|
|
||
|
|
GUSIFileToken(const char * path, Request request, bool useAlias = false);
|
||
|
|
GUSIFileToken(const GUSIFileSpec & spec, Request request);
|
||
|
|
GUSIFileToken(short fRefNum, Request request);
|
||
|
|
|
||
|
|
bool IsFile() const { return fIsFile; }
|
||
|
|
bool IsDevice() const { return !fIsFile; }
|
||
|
|
Request WhichRequest() const { return fRequest; }
|
||
|
|
GUSIDevice * Device() const { return fDevice; }
|
||
|
|
const char * Path() const { return fPath; }
|
||
|
|
|
||
|
|
static bool StrFragEqual(const char * name, const char * frag);
|
||
|
|
enum StdStream {
|
||
|
|
kStdin,
|
||
|
|
kStdout,
|
||
|
|
kStderr,
|
||
|
|
kConsole,
|
||
|
|
kNoStdStream = -2
|
||
|
|
};
|
||
|
|
static StdStream StrStdStream(const char * name);
|
||
|
|
|
||
|
|
private:
|
||
|
|
GUSIDevice * fDevice;
|
||
|
|
const char * fPath;
|
||
|
|
bool fIsFile;
|
||
|
|
Request fRequest;
|
||
|
|
};
|
||
|
|
// \section{Definition of [[GUSIDirectory]]}
|
||
|
|
//
|
||
|
|
// [[GUSIDirectory]] is a directory handle to iterate over all entries in a
|
||
|
|
// directory.
|
||
|
|
//
|
||
|
|
// <Definition of class [[GUSIDirectory]]>=
|
||
|
|
class GUSIDirectory {
|
||
|
|
public:
|
||
|
|
virtual ~GUSIDirectory() {}
|
||
|
|
virtual dirent * readdir() = 0;
|
||
|
|
virtual long telldir() = 0;
|
||
|
|
virtual void seekdir(long pos) = 0;
|
||
|
|
virtual void rewinddir() = 0;
|
||
|
|
protected:
|
||
|
|
friend class GUSIDevice;
|
||
|
|
GUSIDirectory() {}
|
||
|
|
};
|
||
|
|
// \section{Definition of [[GUSIDeviceRegistry]]}
|
||
|
|
//
|
||
|
|
// The [[GUSIDeviceRegistry]] is a singleton class registering all socket
|
||
|
|
// domains.
|
||
|
|
//
|
||
|
|
// <Definition of class [[GUSIDeviceRegistry]]>=
|
||
|
|
class GUSIDeviceRegistry {
|
||
|
|
public:
|
||
|
|
// The only instance of [[GUSIDeviceRegistry]] is, as usual, obtained by calling
|
||
|
|
// [[Instance]].
|
||
|
|
//
|
||
|
|
// <Creation of [[GUSIDeviceRegistry]]>=
|
||
|
|
static GUSIDeviceRegistry * Instance();
|
||
|
|
// <Operations for [[GUSIDeviceRegistry]]>=
|
||
|
|
GUSISocket * open(const char * path, int flags);
|
||
|
|
// <Operations for [[GUSIDeviceRegistry]]>=
|
||
|
|
int remove(const char * path);
|
||
|
|
// <Operations for [[GUSIDeviceRegistry]]>=
|
||
|
|
int rename(const char * oldname, const char * newname);
|
||
|
|
// <Operations for [[GUSIDeviceRegistry]]>=
|
||
|
|
int stat(const char * path, struct stat * buf, bool useAlias);
|
||
|
|
// <Operations for [[GUSIDeviceRegistry]]>=
|
||
|
|
int chmod(const char * path, mode_t mode);
|
||
|
|
// <Operations for [[GUSIDeviceRegistry]]>=
|
||
|
|
int utime(const char * path, const utimbuf * times);
|
||
|
|
// <Operations for [[GUSIDeviceRegistry]]>=
|
||
|
|
int access(const char * path, int mode);
|
||
|
|
// <Operations for [[GUSIDeviceRegistry]]>=
|
||
|
|
int mkdir(const char * path);
|
||
|
|
// <Operations for [[GUSIDeviceRegistry]]>=
|
||
|
|
int rmdir(const char * path);
|
||
|
|
// <Operations for [[GUSIDeviceRegistry]]>=
|
||
|
|
GUSIDirectory * opendir(const char * path);
|
||
|
|
// <Operations for [[GUSIDeviceRegistry]]>=
|
||
|
|
int symlink(const char * target, const char * newlink);
|
||
|
|
// <Operations for [[GUSIDeviceRegistry]]>=
|
||
|
|
int readlink(const char * path, char * buf, int bufsize);
|
||
|
|
// <Operations for [[GUSIDeviceRegistry]]>=
|
||
|
|
int fgetfileinfo(const char * path, OSType * creator, OSType * type);
|
||
|
|
int fsetfileinfo(const char * path, OSType creator, OSType type);
|
||
|
|
// <Operations for [[GUSIDeviceRegistry]]>=
|
||
|
|
int faccess(const char * path, unsigned * cmd, void * arg);
|
||
|
|
// [[AddDevice]] and [[RemoveDevice]] add and remove a [[GUSIDevice]].
|
||
|
|
//
|
||
|
|
// <Registration interface of [[GUSIDeviceRegistry]]>=
|
||
|
|
void AddDevice(GUSIDevice * device);
|
||
|
|
void RemoveDevice(GUSIDevice * device);
|
||
|
|
// It is convenient to define iterators to iterate across all devices.
|
||
|
|
//
|
||
|
|
// <Iterator on [[GUSIDeviceRegistry]]>=
|
||
|
|
class iterator;
|
||
|
|
|
||
|
|
iterator begin();
|
||
|
|
iterator end();
|
||
|
|
protected:
|
||
|
|
// On construction, a [[GUSIFileToken]] looks up the appropriate device in the
|
||
|
|
// [[GUSIDeviceRegistry]].
|
||
|
|
//
|
||
|
|
// <Looking up a device in the [[GUSIDeviceRegistry]]>=
|
||
|
|
friend class GUSIFileToken;
|
||
|
|
|
||
|
|
GUSIDevice * Lookup(GUSIFileToken & file);
|
||
|
|
private:
|
||
|
|
// <Privatissima of [[GUSIDeviceRegistry]]>=
|
||
|
|
static GUSIDeviceRegistry * sInstance;
|
||
|
|
// Devices are stored in a linked list. On creation of the registry, it immediately
|
||
|
|
// registers the instance for plain Macintosh file sockets, to which pretty much all
|
||
|
|
// operations default. This device will never refuse any request.
|
||
|
|
//
|
||
|
|
// <Privatissima of [[GUSIDeviceRegistry]]>=
|
||
|
|
GUSIDevice * fFirstDevice;
|
||
|
|
GUSIDeviceRegistry();
|
||
|
|
};
|
||
|
|
// \section{Definition of [[GUSIDevice]]}
|
||
|
|
//
|
||
|
|
// [[GUSIDevice]] consists of a few maintenance functions and the
|
||
|
|
// device operations. The request dispatcher first calls [[Want]] for
|
||
|
|
// each candidate device and as soon as it's successful, calls the specific
|
||
|
|
// operation. Devices are kept in a linked list by the [[GUSIDeviceRegistry]].
|
||
|
|
//
|
||
|
|
// <Definition of class [[GUSIDevice]]>=
|
||
|
|
class GUSIDevice {
|
||
|
|
public:
|
||
|
|
virtual bool Want(GUSIFileToken & file);
|
||
|
|
|
||
|
|
// <Operations for [[GUSIDevice]]>=
|
||
|
|
virtual GUSISocket * open(GUSIFileToken & file, int flags);
|
||
|
|
// <Operations for [[GUSIDevice]]>=
|
||
|
|
virtual int remove(GUSIFileToken & file);
|
||
|
|
// <Operations for [[GUSIDevice]]>=
|
||
|
|
virtual int rename(GUSIFileToken & from, const char * newname);
|
||
|
|
// <Operations for [[GUSIDevice]]>=
|
||
|
|
virtual int stat(GUSIFileToken & file, struct stat * buf);
|
||
|
|
// <Operations for [[GUSIDevice]]>=
|
||
|
|
virtual int chmod(GUSIFileToken & file, mode_t mode);
|
||
|
|
// <Operations for [[GUSIDevice]]>=
|
||
|
|
virtual int utime(GUSIFileToken & file, const utimbuf * times);
|
||
|
|
// <Operations for [[GUSIDevice]]>=
|
||
|
|
virtual int access(GUSIFileToken & file, int mode);
|
||
|
|
// <Operations for [[GUSIDevice]]>=
|
||
|
|
virtual int mkdir(GUSIFileToken & file);
|
||
|
|
// <Operations for [[GUSIDevice]]>=
|
||
|
|
virtual int rmdir(GUSIFileToken & file);
|
||
|
|
// <Operations for [[GUSIDevice]]>=
|
||
|
|
virtual GUSIDirectory * opendir(GUSIFileToken & file);
|
||
|
|
// <Operations for [[GUSIDevice]]>=
|
||
|
|
virtual int symlink(GUSIFileToken & to, const char * newlink);
|
||
|
|
// <Operations for [[GUSIDevice]]>=
|
||
|
|
virtual int readlink(GUSIFileToken & link, char * buf, int bufsize);
|
||
|
|
// <Operations for [[GUSIDevice]]>=
|
||
|
|
virtual int fgetfileinfo(GUSIFileToken & file, OSType * creator, OSType * type);
|
||
|
|
virtual int fsetfileinfo(GUSIFileToken & file, OSType creator, OSType type);
|
||
|
|
// <Operations for [[GUSIDevice]]>=
|
||
|
|
virtual int faccess(GUSIFileToken & file, unsigned * cmd, void * arg);
|
||
|
|
protected:
|
||
|
|
friend class GUSIDeviceRegistry;
|
||
|
|
friend class GUSIDeviceRegistry::iterator;
|
||
|
|
|
||
|
|
GUSIDevice() : fNextDevice(nil) {}
|
||
|
|
virtual ~GUSIDevice() {}
|
||
|
|
|
||
|
|
GUSIDevice * fNextDevice;
|
||
|
|
};
|
||
|
|
|
||
|
|
#if PRAGMA_STRUCT_ALIGN
|
||
|
|
#pragma options align=reset
|
||
|
|
#endif
|
||
|
|
|
||
|
|
// \section{Implementation of [[GUSIDeviceRegistry]]}
|
||
|
|
//
|
||
|
|
//
|
||
|
|
// <Definition of [[GUSISetupDevices]] hook>=
|
||
|
|
extern "C" void GUSISetupDevices();
|
||
|
|
|
||
|
|
// <Inline member functions for class [[GUSIDeviceRegistry]]>=
|
||
|
|
inline GUSIDeviceRegistry * GUSIDeviceRegistry::Instance()
|
||
|
|
{
|
||
|
|
if (!sInstance) {
|
||
|
|
sInstance = new GUSIDeviceRegistry();
|
||
|
|
GUSISetupDevices();
|
||
|
|
}
|
||
|
|
|
||
|
|
return sInstance;
|
||
|
|
}
|
||
|
|
// The [[GUSIDeviceRegistry]] forward iterator is simple.
|
||
|
|
//
|
||
|
|
// <Inline member functions for class [[GUSIDeviceRegistry]]>=
|
||
|
|
class GUSIDeviceRegistry::iterator {
|
||
|
|
public:
|
||
|
|
iterator(GUSIDevice * device = 0) : fDevice(device) {}
|
||
|
|
GUSIDeviceRegistry::iterator & operator++()
|
||
|
|
{ fDevice = fDevice->fNextDevice; return *this; }
|
||
|
|
GUSIDeviceRegistry::iterator operator++(int)
|
||
|
|
{ GUSIDeviceRegistry::iterator old(*this); fDevice = fDevice->fNextDevice; return old; }
|
||
|
|
bool operator==(const GUSIDeviceRegistry::iterator other) const
|
||
|
|
{ return fDevice==other.fDevice; }
|
||
|
|
GUSIDevice & operator*() { return *fDevice; }
|
||
|
|
GUSIDevice * operator->() { return fDevice; }
|
||
|
|
private:
|
||
|
|
GUSIDevice * fDevice;
|
||
|
|
};
|
||
|
|
|
||
|
|
inline GUSIDeviceRegistry::iterator GUSIDeviceRegistry::begin()
|
||
|
|
{
|
||
|
|
return GUSIDeviceRegistry::iterator(fFirstDevice);
|
||
|
|
}
|
||
|
|
|
||
|
|
inline GUSIDeviceRegistry::iterator GUSIDeviceRegistry::end()
|
||
|
|
{
|
||
|
|
return GUSIDeviceRegistry::iterator();
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif /* GUSI_SOURCE */
|
||
|
|
|
||
|
|
#endif /* _GUSIDevice_ */
|