github.com/tcnksm/go@v0.0.0-20141208075154-439b32936367/src/lib9/fmt/fmtdef.h (about)

     1  /*
     2   * The authors of this software are Rob Pike and Ken Thompson.
     3   *
     4   *     Copyright (c) 2002-2006 by Lucent Technologies.
     5   * 
     6   * Permission to use, copy, modify, and distribute this software for any
     7   * purpose without fee is hereby granted, provided that this entire notice
     8   * is included in all copies of any software which is or includes a copy
     9   * or modification of this software and in all copies of the supporting
    10   * documentation for such software.
    11   * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
    12   * WARRANTY.  IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES 
    13   * NOR GOOGLE INC MAKE ANY REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING 
    14   * THE MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
    15   */
    16  
    17  /*
    18   * dofmt -- format to a buffer
    19   * the number of characters formatted is returned,
    20   * or -1 if there was an error.
    21   * if the buffer is ever filled, flush is called.
    22   * it should reset the buffer and return whether formatting should continue.
    23   */
    24  
    25  typedef int (*Fmts)(Fmt*);
    26  
    27  typedef struct Quoteinfo Quoteinfo;
    28  struct Quoteinfo
    29  {
    30  	int	quoted;		/* if set, string must be quoted */
    31  	int	nrunesin;	/* number of input runes that can be accepted */
    32  	int	nbytesin;	/* number of input bytes that can be accepted */
    33  	int	nrunesout;	/* number of runes that will be generated */
    34  	int	nbytesout;	/* number of bytes that will be generated */
    35  };
    36  
    37  /* Edit .+1,/^$/ |cfn |grep -v static | grep __ */
    38  double       __Inf(int sign);
    39  double       __NaN(void);
    40  int          __badfmt(Fmt *f);
    41  int          __charfmt(Fmt *f);
    42  int          __countfmt(Fmt *f);
    43  int          __efgfmt(Fmt *fmt);
    44  int          __errfmt(Fmt *f);
    45  int          __flagfmt(Fmt *f);
    46  int          __fmtFdFlush(Fmt *f);
    47  int          __fmtcpy(Fmt *f, const void *vm, int n, int sz);
    48  void*        __fmtdispatch(Fmt *f, void *fmt, int isrunes);
    49  void *       __fmtflush(Fmt *f, void *t, int len);
    50  void         __fmtlock(void);
    51  int          __fmtpad(Fmt *f, int n);
    52  double       __fmtpow10(int n);
    53  int          __fmtrcpy(Fmt *f, const void *vm, int n);
    54  void         __fmtunlock(void);
    55  int          __ifmt(Fmt *f);
    56  int          __isInf(double d, int sign);
    57  int          __isNaN(double d);
    58  int          __needsep(int*, char**);
    59  int          __needsquotes(char *s, int *quotelenp);
    60  int          __percentfmt(Fmt *f);
    61  void         __quotesetup(char *s, Rune *r, int nin, int nout, Quoteinfo *q, int sharp, int runesout);
    62  int          __quotestrfmt(int runesin, Fmt *f);
    63  int          __rfmtpad(Fmt *f, int n);
    64  int          __runefmt(Fmt *f);
    65  int          __runeneedsquotes(Rune *r, int *quotelenp);
    66  int          __runesfmt(Fmt *f);
    67  int          __strfmt(Fmt *f);
    68  
    69  #define FMTCHAR(f, t, s, c)\
    70  	do{\
    71  	if(t + 1 > (char*)s){\
    72  		t = (char*)__fmtflush(f, t, 1);\
    73  		if(t != nil)\
    74  			s = (char*)f->stop;\
    75  		else\
    76  			return -1;\
    77  	}\
    78  	*t++ = (char)c;\
    79  	}while(0)
    80  
    81  #define FMTRCHAR(f, t, s, c)\
    82  	do{\
    83  	if(t + 1 > (Rune*)s){\
    84  		t = (Rune*)__fmtflush(f, t, sizeof(Rune));\
    85  		if(t != nil)\
    86  			s = (Rune*)f->stop;\
    87  		else\
    88  			return -1;\
    89  	}\
    90  	*t++ = (Rune)c;\
    91  	}while(0)
    92  
    93  #define FMTRUNE(f, t, s, r)\
    94  	do{\
    95  	Rune _rune;\
    96  	int _runelen;\
    97  	if(t + UTFmax > (char*)s && t + (_runelen = runelen(r)) > (char*)s){\
    98  		t = (char*)__fmtflush(f, t, _runelen);\
    99  		if(t != nil)\
   100  			s = (char*)f->stop;\
   101  		else\
   102  			return -1;\
   103  	}\
   104  	if(r < Runeself)\
   105  		*t++ = (char)r;\
   106  	else{\
   107  		_rune = r;\
   108  		t += runetochar(t, &_rune);\
   109  	}\
   110  	}while(0)
   111  
   112  #ifdef va_copy
   113  #	define VA_COPY(a,b) va_copy(a,b)
   114  #	define VA_END(a) va_end(a)
   115  #else
   116  #	define VA_COPY(a,b) (a) = (b)
   117  #	define VA_END(a)
   118  #endif
   119