ios.h

pwlib源码库

//
// (c) 2000 Yuriy Govitovskiy,
// for Openh323, www.Openh323.org
//
// Windows CE Port
//   
// ios.h - definitions/declarations for the ios class.
//
// [Microsoft]
// [AT&T C++]
//
// [Public]

#ifdef  __cplusplus

#ifndef _INC_IOS
#define _INC_IOS

#ifndef NULL
#define NULL    0
#endif

#ifndef EOF
#define EOF     (-1)
#endif

class streambuf;
class ostream;

class ios 
{
public:
    enum io_state {  goodbit = 0x00,
                     eofbit  = 0x01,
                     failbit = 0x02,
                     badbit  = 0x04 };

    enum open_mode { in        = 0x01,
                     out       = 0x02,
                     ate       = 0x04,
                     app       = 0x08,
                     trunc     = 0x10,
                     nocreate  = 0x20,
                     noreplace = 0x40,
                     binary    = 0x80 };

    enum seek_dir { beg=0, cur=1, end=2 };

    enum {  skipws     = 0x0001,
            left       = 0x0002,
            right      = 0x0004,
            internal   = 0x0008,
            dec        = 0x0010,
            oct        = 0x0020,
            hex        = 0x0040,
            showbase   = 0x0080,
            showpoint  = 0x0100,
            uppercase  = 0x0200,
            showpos    = 0x0400,
            scientific = 0x0800,
            fixed      = 0x1000,
            unitbuf    = 0x2000,
            stdio      = 0x4000
                                 };

    static const long basefield;        // dec | oct | hex
    static const long adjustfield;      // left | right | internal
    static const long floatfield;       // scientific | fixed

    ios(streambuf*);                    // differs from ANSI
    virtual ~ios();

    inline long flags() const;
    inline long flags(long _l);

    inline long setf(long _f,long _m);
    inline long setf(long _l);
    inline long unsetf(long _l);

    inline int width() const;
    inline int width(int _i);

    inline ostream* tie(ostream* _os);
    inline ostream* tie() const;

    inline char fill() const;
    inline char fill(char _c);

    inline int precision(int _i);
    inline int precision() const;

    inline int rdstate() const;
    inline void clear(int _i = 0);

//  inline operator void*() const;
    operator void *() const { if(state&(badbit|failbit) ) return 0; return (void *)this; }
    inline int operator!() const;

    inline int  good() const;
    inline int  eof() const;
    inline int  fail() const;
    inline int  bad() const;

    inline streambuf* rdbuf() const;

    inline long & iword(int) const;
    inline void * & pword(int) const;

    static long bitalloc();
    static int xalloc();
    static void sync_with_stdio();

    void lock() { }
    void unlock() { }
    void lockbuf() { }
    void unlockbuf() { }

protected:
    ios();
    ios(const ios&);                    // treat as private
    ios& operator=(const ios&);
    void init(streambuf*);

    enum { skipping, tied };
    streambuf*  bp;

    int     state;
    int     ispecial;                   // not used
    int     ospecial;                   // not used
    int     isfx_special;               // not used
    int     osfx_special;               // not used
    int     x_delbuf;                   // if set, rdbuf() deleted by ~ios

    ostream* x_tie;
    long    x_flags;
    int     x_precision;
    char    x_fill;
    int     x_width;

    static void (*stdioflush)();        // not used

    static void lockc() { }
    static void unlockc() { }

public:
    int delbuf() const { return x_delbuf; }
    void    delbuf(int _i) { x_delbuf = _i; }

private:
    static long x_maxbit;
    static int x_curindex;
    static int sunk_with_stdio;         // make sure sync_with done only once
    static long * x_statebuf;  // used by xalloc()
};

#include <streamb.h>

inline ios& dec(ios& _strm) { _strm.setf(ios::dec,ios::basefield); return _strm; }
inline ios& hex(ios& _strm) { _strm.setf(ios::hex,ios::basefield); return _strm; }
inline ios& oct(ios& _strm) { _strm.setf(ios::oct,ios::basefield); return _strm; }

inline long ios::flags() const { return x_flags; }
inline long ios::flags(long _l){ long _lO; _lO = x_flags; x_flags = _l; return _lO; }

inline long ios::setf(long _l,long _m){ long _lO; lock(); _lO = x_flags; x_flags = (_l&_m) | (x_flags&(~_m)); unlock(); return _lO; }
inline long ios::setf(long _l){ long _lO; lock(); _lO = x_flags; x_flags |= _l; unlock(); return _lO; }
inline long ios::unsetf(long _l){ long _lO; lock(); _lO = x_flags; x_flags &= (~_l); unlock(); return _lO; }

inline int ios::width() const { return x_width; }
inline int ios::width(int _i){ int _iO; _iO = (int)x_width; x_width = _i; return _iO; }

inline ostream* ios::tie(ostream* _os){ ostream* _osO; _osO = x_tie; x_tie = _os; return _osO; }
inline ostream* ios::tie() const { return x_tie; }
inline char ios::fill() const { return x_fill; }
inline char ios::fill(char _c){ char _cO; _cO = x_fill; x_fill = _c; return _cO; }
inline int ios::precision(int _i){ int _iO; _iO = (int)x_precision; x_precision = _i; return _iO; }
inline int ios::precision() const { return x_precision; }

inline int ios::rdstate() const { return state; }

// inline ios::operator void *() const { if(state&(badbit|failbit) ) return 0; return (void *)this; }
inline int ios::operator!() const { return state&(badbit|failbit); }

inline int  ios::bad() const { return state & badbit; }
inline void ios::clear(int _i){ lock(); state = _i; unlock(); }
inline int  ios::eof() const { return state & eofbit; }
inline int  ios::fail() const { return state & (badbit | failbit); }
inline int  ios::good() const { return state == 0; }

inline streambuf* ios::rdbuf() const { return bp; }

inline long & ios::iword(int _i) const { return x_statebuf[_i] ; }
inline void * & ios::pword(int _i) const { return (void * &)x_statebuf[_i]; }

#endif  // _INC_IOS

#endif  /* __cplusplus */