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deb-goldedplus/goldlib/gall/gfile.h

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// This may look like C code, but it is really -*- C++ -*-
// ------------------------------------------------------------------
// The Goldware Library
// Copyright (C) 1990-1999 Odinn Sorensen
// Copyright (C) 1999-2000 Alexander S. Aganichev
// ------------------------------------------------------------------
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Library General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library 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
// Library General Public License for more details.
//
// You should have received a copy of the GNU Library 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
// ------------------------------------------------------------------
// $Id$
// ------------------------------------------------------------------
// File I/O class.
// ------------------------------------------------------------------
#ifndef __gfilbase_h
#define __gfilbase_h
// ------------------------------------------------------------------
#include <gfilutil.h>
// ------------------------------------------------------------------
// An invalid path/filename
#define GFILE_INVALID "::INVALID::"
// ------------------------------------------------------------------
// Stream/Unix-style file I/O class
class gfile {
public:
// ----------------------------------------------------------------
// Internal variables
int fh; // File handle for Unix I/O
FILE* fp; // File pointer for ANSI stream I/O
// --------------------------------------------------------------
// State variables
int status; // Contains last errno value
// --------------------------------------------------------------
// Handy utility functions
int okay(); // Returns non-zero if no errors were detected
int isopen(); // true if the file is open
// --------------------------------------------------------------
// Constructors and destructor
gfile(); // Bare constructor
gfile(int __fh); // Construct from Unix file handle
gfile(FILE* __fp); // Construct from ANSI stream pointer
gfile(const char* __path, int __access, int __shflag=SH_DENYNO, int __mode=S_IREAD|S_IWRITE);
gfile(const char* __path, const char* __mode, int __shflag=SH_DENYNO);
~gfile(); // Destructor (closes file)
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operator bool() { return isopen() ? true : false; }
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// --------------------------------------------------------------
// Set file handle or stream pointer
int setfh(int __fh);
FILE* setfp(FILE* __fp);
// --------------------------------------------------------------
// UNIX-style raw I/O
int open (const char* __path, int __access, int __shflag=SH_DENYNO, int __mode=S_IREAD|S_IWRITE);
int open (const char* __path, int __access, char* __fmode, int __shflag=SH_DENYNO, int __mode=S_IREAD|S_IWRITE);
int close ();
int read (void* __ptr, size_t __len);
int write (void* __ptr, size_t __len);
long tell ();
long lseek (long __offset, int __direction);
long lseek (long __record, long __recordsize, int __direction);
long lseekset (long __record, long __recordsize=1);
long filelength ();
int chsize (long __size);
int lock (long __offset, long __len);
int unlock (long __offset, long __len);
int getftime (dword* __ftime);
int eof ();
// --------------------------------------------------------------
// ANSI-style streaming buffered I/O
FILE* fopen (const char* __path, const char* __mode, int __shflag=SH_DENYNO);
FILE* fopen (const std::string& __path, const char* __mode, int __shflag=SH_DENYNO);
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FILE* fdopen (char* __mode);
int fclose ();
size_t fread (void* __ptr, size_t __size, size_t __items=1);
size_t fwrite (const void* __ptr, size_t __size, size_t __items=1);
int fgetc ();
int fputc (int __ch);
char* fgets (char* __str, size_t __len);
int fputs (const char* __str);
int printf (const char* __format, ...) __attribute__ ((format (printf, 2, 3)));
int fflush ();
long ftell ();
int fseek (long __offset, int __direction);
int fseek (long __record, long __recordsize, int __direction);
int fseekset(long __record, long __recordsize=1);
void rewind ();
int setvbuf (char* __buf=NULL, int __type=_IOFBF, size_t __size=8192);
int setvbuf (size_t __size) { return setvbuf(NULL, _IOFBF, __size); }
int feof_ ();
int ferror_ ();
// ----------------------------------------------------------------
#ifdef __GOLDWARE_HAS_BOOL
gfile& operator>> (bool& i);
#endif
gfile& operator>> (unsigned char& i);
gfile& operator>> (unsigned short& i);
gfile& operator>> (unsigned int& i);
gfile& operator>> (unsigned long& i);
gfile& operator>> (char& i) { return operator>>((unsigned char&)i); }
gfile& operator>> (signed char& i) { return operator>>((unsigned char&)i); }
gfile& operator>> (short& i) { return operator>>((unsigned short&)i); }
gfile& operator>> (int& i) { return operator>>((unsigned int&)i); }
gfile& operator>> (long& i) { return operator>>((unsigned long&)i); }
#ifdef __GOLDWARE_HAS_BOOL
gfile& operator<< (bool o);
#endif
gfile& operator<< (unsigned char o);
gfile& operator<< (unsigned short o);
gfile& operator<< (unsigned int o);
gfile& operator<< (unsigned long o);
gfile& operator<< (char o) { return operator<<((unsigned char)o); }
gfile& operator<< (signed char o) { return operator<<((unsigned char)o); }
gfile& operator<< (short o) { return operator<<((unsigned short)o); }
gfile& operator<< (int o) { return operator<<((unsigned int)o); }
gfile& operator<< (long o) { return operator<<((unsigned long)o); }
};
// ------------------------------------------------------------------
// Inline implementations
// ------------------------------------------------------------------
inline long gfile::lseek(long __record, long __recordsize, int __direction) {
return lseek(__record*__recordsize, __direction);
}
// ------------------------------------------------------------------
inline long gfile::lseekset(long __record, long __recordsize) {
return lseek(__record*__recordsize, SEEK_SET);
}
// ------------------------------------------------------------------
inline int gfile::ferror_() {
return ferror(fp);
}
// ------------------------------------------------------------------
inline int gfile::fseek(long __record, long __recordsize, int __direction) {
return fseek(__record*__recordsize, __direction);
}
// ------------------------------------------------------------------
inline int gfile::fseekset(long __record, long __recordsize) {
return fseek(__record*__recordsize, SEEK_SET);
}
// ------------------------------------------------------------------
inline void gfile::rewind() {
::rewind(fp);
}
// ------------------------------------------------------------------
inline int gfile::feof_() {
return feof(fp);
}
// ------------------------------------------------------------------
#endif
// ------------------------------------------------------------------