root/src/lib9/fmt/fmtdef.h

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INCLUDED FROM


/*
 * The authors of this software are Rob Pike and Ken Thompson.
 *
 *     Copyright (c) 2002-2006 by Lucent Technologies.
 * 
 * Permission to use, copy, modify, and distribute this software for any
 * purpose without fee is hereby granted, provided that this entire notice
 * is included in all copies of any software which is or includes a copy
 * or modification of this software and in all copies of the supporting
 * documentation for such software.
 * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
 * WARRANTY.  IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES 
 * NOR GOOGLE INC MAKE ANY REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING 
 * THE MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
 */

/*
 * dofmt -- format to a buffer
 * the number of characters formatted is returned,
 * or -1 if there was an error.
 * if the buffer is ever filled, flush is called.
 * it should reset the buffer and return whether formatting should continue.
 */

typedef int (*Fmts)(Fmt*);

typedef struct Quoteinfo Quoteinfo;
struct Quoteinfo
{
        int     quoted;         /* if set, string must be quoted */
        int     nrunesin;       /* number of input runes that can be accepted */
        int     nbytesin;       /* number of input bytes that can be accepted */
        int     nrunesout;      /* number of runes that will be generated */
        int     nbytesout;      /* number of bytes that will be generated */
};

/* Edit .+1,/^$/ |cfn |grep -v static | grep __ */
double       __Inf(int sign);
double       __NaN(void);
int          __badfmt(Fmt *f);
int          __charfmt(Fmt *f);
int          __countfmt(Fmt *f);
int          __efgfmt(Fmt *fmt);
int          __errfmt(Fmt *f);
int          __flagfmt(Fmt *f);
int          __fmtFdFlush(Fmt *f);
int          __fmtcpy(Fmt *f, const void *vm, int n, int sz);
void*        __fmtdispatch(Fmt *f, void *fmt, int isrunes);
void *       __fmtflush(Fmt *f, void *t, int len);
void         __fmtlock(void);
int          __fmtpad(Fmt *f, int n);
double       __fmtpow10(int n);
int          __fmtrcpy(Fmt *f, const void *vm, int n);
void         __fmtunlock(void);
int          __ifmt(Fmt *f);
int          __isInf(double d, int sign);
int          __isNaN(double d);
int          __needsep(int*, char**);
int          __needsquotes(char *s, int *quotelenp);
int          __percentfmt(Fmt *f);
void         __quotesetup(char *s, Rune *r, int nin, int nout, Quoteinfo *q, int sharp, int runesout);
int          __quotestrfmt(int runesin, Fmt *f);
int          __rfmtpad(Fmt *f, int n);
int          __runefmt(Fmt *f);
int          __runeneedsquotes(Rune *r, int *quotelenp);
int          __runesfmt(Fmt *f);
int          __strfmt(Fmt *f);

#define FMTCHAR(f, t, s, c)\
        do{\
        if(t + 1 > (char*)s){\
                t = (char*)__fmtflush(f, t, 1);\
                if(t != nil)\
                        s = (char*)f->stop;\
                else\
                        return -1;\
        }\
        *t++ = (char)c;\
        }while(0)

#define FMTRCHAR(f, t, s, c)\
        do{\
        if(t + 1 > (Rune*)s){\
                t = (Rune*)__fmtflush(f, t, sizeof(Rune));\
                if(t != nil)\
                        s = (Rune*)f->stop;\
                else\
                        return -1;\
        }\
        *t++ = (Rune)c;\
        }while(0)

#define FMTRUNE(f, t, s, r)\
        do{\
        Rune _rune;\
        int _runelen;\
        if(t + UTFmax > (char*)s && t + (_runelen = runelen(r)) > (char*)s){\
                t = (char*)__fmtflush(f, t, _runelen);\
                if(t != nil)\
                        s = (char*)f->stop;\
                else\
                        return -1;\
        }\
        if(r < Runeself)\
                *t++ = (char)r;\
        else{\
                _rune = r;\
                t += runetochar(t, &_rune);\
        }\
        }while(0)

#ifdef va_copy
#       define VA_COPY(a,b) va_copy(a,b)
#       define VA_END(a) va_end(a)
#else
#       define VA_COPY(a,b) (a) = (b)
#       define VA_END(a)
#endif


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