include/wvatomicfile.h

/* -*- Mode: C++ -*-
 * Worldvisions Weaver Software:
 *   Copyright (C) 1997-2005 Net Integration Technologies, Inc.
 *
 * A simple class to access filesystem files using WvStreams.
 */
#ifndef __WVATOMFILE_H
#define __WVATOMFILE_H
 
#include "wvfile.h"

class WvAtomicFile : public WvFile
{
private:
    WvString atomic_file;   
    WvString tmp_file;
 
public:
    WvAtomicFile(WvStringParm filename, int flags = O_TRUNC | O_CREAT, 
                    mode_t create_mode = 0666);
    ~WvAtomicFile();
 
    bool open(WvStringParm filename, int flags = O_TRUNC | O_CREAT, 
                mode_t create_mode = 0666);
    void close();
    
    // Like chmod(2), does *not* respect umask
    bool chmod(mode_t mode);
    
    bool chown(uid_t owner, gid_t group);
 
public:
    const char *wstype() const { return "WvAtomicFile"; }
};
 
#endif // __WVATOMFILE_H