fio.h
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上传日期:2007-06-06
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- /* ***** BEGIN LICENSE BLOCK *****
- * Version: RCSL 1.0/RPSL 1.0
- *
- * Portions Copyright (c) 1995-2002 RealNetworks, Inc. All Rights Reserved.
- *
- * The contents of this file, and the files included with this file, are
- * subject to the current version of the RealNetworks Public Source License
- * Version 1.0 (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the RealNetworks Community Source License Version 1.0
- * (the "RCSL") available at http://www.helixcommunity.org/content/rcsl,
- * in which case the RCSL will apply. You may also obtain the license terms
- * directly from RealNetworks. You may not use this file except in
- * compliance with the RPSL or, if you have a valid RCSL with RealNetworks
- * applicable to this file, the RCSL. Please see the applicable RPSL or
- * RCSL for the rights, obligations and limitations governing use of the
- * contents of the file.
- *
- * This file is part of the Helix DNA Technology. RealNetworks is the
- * developer of the Original Code and owns the copyrights in the portions
- * it created.
- *
- * This file, and the files included with this file, is distributed and made
- * available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS
- * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- *
- * Technology Compatibility Kit Test Suite(s) Location:
- * http://www.helixcommunity.org/content/tck
- *
- * Contributor(s):
- *
- * ***** END LICENSE BLOCK ***** */
- #ifndef _MACFIO_H_
- #define _MACFIO_H_
- #include <stdlib.h>
- #include "bio.h"
- #include "macFD.h"
- #include "CMacFile.h"
- #include "assert.h"
- #ifdef _MAC_MACHO
- #include <sys/stat.h>
- #else
- #include "stat.h"
- #include "errno.h"
- #include "oterrs.h"
- //#define OTUNIXERRORS 1
- //#include "OpenTransport.h"
- #include "MacTCP.h"
- #endif
- extern Boolean gFDInitialized;
- class FileIO : public IO
- {
- public:
- FileIO(const char* file, LONG32 flags,
- mode_t mode = 0666);
- ~FileIO();
- virtual LONG32 close();
- virtual LONG32 read(void* buf, LONG32 size);
- virtual LONG32 write(const void* buf, LONG32 size);
- virtual off_t seek(off_t off, LONG32 whence);
- virtual LONG32 error();
- virtual LONG32 flags();
- virtual off_t file_size();
- int status(struct stat *st); //mac
- static void local_path(char* path);
- #ifdef _MAC_MACHO
- #define MAXPATH 1024
- #else
- static const enum { MAXPATH = 1024 };
- #endif
- static const char PATH_SEP;
- static int is_directory(char* path);
- static const char* NEWLINE;
- static int UNIXError(OSErr theErr);
- protected:
- int fd;
- LONG32 err;
- LONG32 _flags;
- private:
- void *mFile; // pointer to the actual Mac file object
- };
- #ifndef _CARBON
- #define ENFILE 23 /* Too many open files in system */
- #define ENOSPC 28 /* No space left on device */
- #endif
- #define EROFS 30 /* Read-only file system */
- inline int
- FileIO::UNIXError(OSErr theErr)
- {
- int err;
-
- switch(theErr)
- {
- case noErr:
- case eofErr:
- err = 0;
- break;
- case permErr:
- err = EACCES;
- break;
- case fBsyErr:
- err = EBUSY;
- break;
- case dupFNErr:
- err = EEXIST;
- break;
- case ioErr:
- err = EIO;
- break;
- case tmfoErr:
- err = ENFILE;
- break;
- case fnfErr:
- err = ENOENT;
- break;
- case dskFulErr:
- err = ENOSPC;
- break;
- case wPrErr:
- err = EROFS;
- break;
- #ifndef _MAC_MACHO
- case ipBadLapErr:
- case ipBadCnfgErr:
- case ipNoCnfgErr:
- case ipLoadErr:
- case ipBadAddr:
- err = ENXIO; /* device not configured */ /* a cheap cop out */
- break;
-
- case connectionClosing:
- err = ESHUTDOWN; /* Can't send after socket shutdown */
- break;
-
- case connectionExists:
- err = EISCONN; /* Socket is already connected */
- break;
-
- case connectionTerminated:
- err = ENOTCONN; /* Connection reset by peer */ /* one of many possible */
- break;
-
- case openFailed:
- err = ECONNREFUSED; /* Connection refused */
- break;
-
- case duplicateSocket: /* technically, duplicate port */
- err = EADDRINUSE; /* Address already in use */
- break;
-
- case ipDestDeadErr:
- err = EHOSTDOWN; /* Host is down */
- break;
-
- case ipRouteErr:
- err = EHOSTUNREACH; /* No route to host */
- break;
- #endif
-
- default:
- err = EINVAL; /* cop out; an internal err, unix err, or no err */
- break;
- }
- return err;
- }
- inline
- FileIO::FileIO(const char* file, LONG32 flags, mode_t mode)
- {
- if (gFDInitialized == FALSE)
- {
- init_fds();
- }
- mFile = NULL;
- fd = -1;
-
- // create a new CMacFile object
- CMacFile *theFile = new CMacFile;
-
- OSErr theErr = noErr;
-
- // get a file descriptor and register the CMacFile object as its owner
- if(theFile)
- {
- fd = get_free_fd();
- assert(fd != -1);
-
- if(fd != -1)
- {
- fd_register(fd, (void *)theFile,FD_FILE);
- }
- }
-
- if(theFile && fd != -1)
- theErr = theFile->Open(file, flags);
-
- if(!theErr && theFile && fd != -1 && flags & O_RDONLY)
- {
- theFile->set_buffered_read(TRUE);
- }
-
- if(!theErr && theFile && fd != -1)
- {
- _flags = flags;
- mFile = theFile;
- }
-
- if(theErr)
- {
- free_fd(fd);
- if(mFile)
- delete mFile;
- mFile = NULL;
- fd = -1;
- }
-
- err = UNIXError(theErr);
- }
- inline LONG32
- FileIO::close()
- {
- if(fd >= 0)
- {
- free_fd(fd);
- fd = -1;
- }
- return 0;
- }
- inline
- FileIO::~FileIO()
- {
- if(mFile)
- {
- CMacFile *temp = (CMacFile *)mFile;
- delete temp;
- }
- if (fd >= 0)
- close();
-
- fd = -1;
- }
- inline off_t
- FileIO::seek(off_t off, LONG32 whence)
- {
- CMacFile *temp = (CMacFile *)mFile;
-
- if(fd == -1 || temp == NULL)
- {
- err = EINVAL;
- return -1;
- }
-
- OSErr theErr = temp->Seek(off,whence);
-
- err = UNIXError(theErr);
-
- return (theErr != 0 ? (off_t) -1 : off);
- }
- inline LONG32
- FileIO::read(void * buf, LONG32 len)
- {
- CMacFile *temp = (CMacFile *)mFile;
-
- if(fd == -1 || temp == NULL)
- {
- err = EINVAL;
- return -1;
- }
- INT32 actualLen = 0;
- OSErr theErr = temp->Read((char *)buf,len,&actualLen);
-
- err = UNIXError(theErr);
-
- return actualLen;
- }
- inline LONG32
- FileIO::write(const void * buf, LONG32 len)
- {
- CMacFile *temp = (CMacFile *)mFile;
-
- if(fd == -1 || temp == NULL)
- {
- err = EINVAL;
- return -1;
- }
- INT32 actualLen = 0;
- OSErr theErr = temp->Write((char *)buf,len,&actualLen);
-
- err = UNIXError(theErr);
-
- return actualLen;
- }
- // Note: status only implements file size (st_size)
- inline int
- FileIO::status(struct stat* st) {
- CMacFile *temp = (CMacFile *)mFile;
-
- if(fd == -1 || temp == NULL)
- {
- err = EINVAL;
- return -1;
- }
- long theSize;
- OSErr theErr = temp->FileSize(&theSize);
- st->st_size = theSize;
-
- err = UNIXError(theErr);
-
- return err;
- }
- inline off_t
- FileIO::file_size()
- {
- struct stat st;
- if (status(&st) < 0)
- {
- return (off_t)-1;
- }
- return st.st_size;
- }
- inline LONG32
- FileIO::error()
- {
- return err;
- }
- inline LONG32
- FileIO::flags()
- {
- return _flags;
- }
- inline void
- FileIO::local_path(char* path)
- {
- }
- inline int
- FileIO::is_directory(char* path)
- {
- #ifdef UNIMPLEMENTED
- struct _stat st;
- if (_stat(path, &st) < 0)
- {
- return 0;
- }
- return st.st_mode & S_IFDIR;
- #endif
- return 0;
- }
- #endif /* _MACFIO_H_ */