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 _UNIXFIO_H_
- #define _UNIXFIO_H_
- #include <fcntl.h>
- #include <errno.h>
- #include <unistd.h>
- #include <sys/types.h>
- #include <sys/stat.h>
- #include "bio.h"
- #ifdef _AIX
- #undef MAXPATH
- #endif
- 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();
- static void local_path(char* path);
- static const LONG32 MAXPATH;
- static const char PATH_SEP;
- static const char* NEWLINE; /* Used to have = "n"; but Irix CC barfed */
- static int is_directory(char* path);
- protected:
- int fd;
- LONG32 err;
- LONG32 _flags;
- };
- inline
- FileIO::FileIO(const char* file, LONG32 flags, mode_t mode)
- {
- err = 0;
- fd = -1;
- fd = ::open(file, flags, mode);
- _flags = flags;
- if (fd < 0)
- err = errno;
- }
- inline LONG32
- FileIO::close()
- {
- LONG32 ret = ::close(fd);
- fd = -1;
- if (ret < 0)
- err = errno;
- return ret;
- }
- inline
- FileIO::~FileIO()
- {
- if (fd >= 0)
- close();
- fd = -1;
- }
- inline off_t
- FileIO::seek(off_t off, LONG32 whence)
- {
- off_t ret = ::lseek(fd, off, whence);
- if (ret < 0)
- err = errno;
- return ret;
- }
- inline LONG32
- FileIO::read(void * buf, LONG32 len)
- {
- int ret = ::read(fd, buf, len);
- if (ret < 0)
- err = errno;
- return ret;
- }
- inline LONG32
- FileIO::write(const void * buf, LONG32 len)
- {
- LONG32 ret = ::write(fd, buf, len);
- if (ret < 0)
- err = errno;
- return ret;
- }
- inline off_t
- FileIO::file_size()
- {
- struct stat st;
- if (fstat(fd, &st) < 0)
- {
- err = errno;
- 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)
- {
- struct stat st;
- if (stat(path, &st) < 0)
- {
- return 0;
- }
- return st.st_mode & S_IFDIR;
- }
- #endif /* _UNIXFIO_H_ */