#include "sfhdr.h"

#define MAXWIDTH (int)(((uint)~0)>>1) /* max amount to scan */

#include "sfstrtof.h"

#if __STD_C

static void _sfbuf(Sfio_t* f, int* peek)

#else

static void _sfbuf(f, peek)

Sfio_t* f;

int* peek;

#endif

{

if(f->next >= f->endb)

{ if(*peek) /* try peeking for a share stream if possible */

{ f->mode |= SF_RV;

if(SFFILBUF(f,-1) > 0)

{ f->mode |= SF_PEEK;

return;

}

*peek = 0; /* can't peek, back to normal reads */

}

(void)SFFILBUF(f,-1);

}

}

typedef struct _scan_s

{ int error; /* get set by _sfdscan if no value specified */

int inp; /* last input character read */

int width; /* field width */

Sfio_t *f; /* stream being scanned */

uchar *d, *endd, *data; /* local buffering system */

int peek; /* != 0 if unseekable/share stream */

int n_input;/* number of input bytes processed */

} Scan_t;

#define SCinit(sc,ds) ((sc)->inp = (sc)->error = -1, (sc)->f = f, \

((sc)->width = (ds) ? width : -1), \

(sc)->d = d, (sc)->endd = endd, (sc)->data = data, \

(sc)->peek = peek, (sc)->n_input = n_input)

#define SCend(sc,ds) (inp = (sc)->inp, f = (sc)->f, \

(width = (ds) ? (sc)->width : width), \

d = (sc)->d, endd = (sc)->endd, data = (sc)->data, \

peek = (sc)->peek, n_input = (sc)->n_input)

#if __STD_C

static int _scgetc(void* arg, int flag)

#else

static int _scgetc(arg, flag)

void* arg;

int flag;

#endif

{

Scan_t *sc = (Scan_t*)arg;

if (flag)

{ sc->error = flag;

return 0;

}

/* if width >= 0, do not allow to exceed width number of bytes */

if(sc->width == 0)

{ sc->inp = -1;

return 0;

}

if(sc->d >= sc->endd) /* refresh local buffer */

{ sc->n_input += sc->d - sc->data;

if(sc->peek)

SFREAD(sc->f, sc->data, sc->d - sc->data);

else sc->f->next = sc->d;

_sfbuf(sc->f, &sc->peek);

sc->data = sc->d = sc->f->next;

sc->endd = sc->f->endb;

if(sc->d >= sc->endd)

{ sc->inp = -1;

return 0;

}

}

if((sc->width -= 1) >= 0) /* from _sfdscan */

return (sc->inp = (int)(*sc->d++));

else return ((int)(*sc->d++));

}

typedef struct _accept_s

{ char ok[SF_MAXCHAR+1];

int yes;

char *form, *endf;

#if _has_multibyte

wchar_t wc;

#endif

} Accept_t;

#if __STD_C

static char* _sfsetclass(const char* form, Accept_t* ac, int flags)

#else

static char* _sfsetclass(form, ac, flags)

char* form; /* format string */

Accept_t* ac; /* values of accepted characters */

int flags; /* SFFMT_LONG for wchar_t */

#endif

{

int c, endc, n;

SFMBDCL(mbs)

if(*form == '^') /* complementing this set */

{ ac->yes = 0;

form += 1;

}

else ac->yes = 1;

for(c = 0; c <= SF_MAXCHAR; ++c)

ac->ok[c] = !ac->yes;

if(*form == ']' || *form == '-') /* special first char */

{ ac->ok[*form] = ac->yes;

form += 1;

}

ac->form = (char*)form;

if(flags&SFFMT_LONG)

SFMBCLR(&mbs);

for(n = 1; *form != ']'; form += n)

{ if((c = *((uchar*)form)) == 0)

return NIL(char*);

if(*(form+1) == '-')

{ endc = *((uchar*)(form+2));

#if _has_multibyte

if(c >= 128 || endc >= 128 ) /* range must be ascii */

goto one_char;

#endif

for(; c <= endc; ++c)

ac->ok[c] = ac->yes;

n = 3;

}

else

{ one_char:

#if _has_multibyte /* true multi-byte chars must be checked differently */

if((flags&SFFMT_LONG) && (n = (int)SFMBLEN(form,&mbs)) <= 0)

return NIL(char*);

if(n == 1)

#endif

ac->ok[c] = ac->yes;

}

}

ac->endf = (char*)form;

return (char*)(form+1);

}

#if _has_multibyte

#if __STD_C

static int _sfwaccept(wchar_t wc, Accept_t* ac)

#else

static int _sfwaccept(wc, ac)

wchar_t wc;

Accept_t* ac;

#endif

{

int endc, c, n;

wchar_t fwc;

char *form = ac->form;

SFMBDCL(mbs)

SFMBCLR(&mbs);

for(n = 1; *form != ']'; form += n)

{ if((c = *((uchar*)form)) == 0)

return 0;

if(*(form+1) == '-')

{ endc = *((uchar*)(form+2));

if(c >= 128 || endc >= 128 ) /* range must be ascii */

goto one_char;

n = 3;

}

else

{ one_char:

if((n = mbrtowc(&fwc, form, ac->endf-form, &mbs)) > 1 &&

wc == fwc )

return ac->yes;

}

}

return !ac->yes;

}

#if _has_multibyte == 1

#define SFgetwc(sc,wc,fmt,ac,mbs) _sfgetwc(sc,wc,fmt,ac,(Void_t*)(mbs))

#else

#define SFgetwc(sc,wc,fmt,ac,mbs) _sfgetwc(sc,wc,fmt,ac,NIL(Void_t*))

#endif

#if __STD_C

static int _sfgetwc(Scan_t* sc, wchar_t* wc, int fmt, Accept_t* ac, Void_t *mbs)

#else

static int _sfgetwc(sc, wc, fmt, ac, mbs)

Scan_t* sc; /* the scanning handle */

wchar_t* wc; /* to return a scanned wchar_t */

int fmt; /* %s, %c, %[ */

Accept_t* ac; /* accept handle for %[ */

Void_t* mbs; /* multibyte parsing state */

#endif

{

int n, v;

char b[16]; /* assuming that SFMBMAX <= 16! */

/* shift left data so that there will be more room to back up on error.

if(sc->d > sc->f->data && (n = sc->endd - sc->d) > 0 && n < SFMBMAX)

{ memcpy(sc->f->data, sc->d, n);

if(sc->f->endr == sc->f->endb)

sc->f->endr = sc->f->data+n;

if(sc->f->endw == sc->f->endb)

sc->f->endw = sc->f->data+n;

sc->f->endb = sc->f->data+n;

sc->d = sc->data = sc->f->data;

sc->endd = sc->f->endb;

if(!mbs) sc->f->endb = sc->endd; /* stop cc's "unused mbs" warning */

}

for(n = 0; n < SFMBMAX; )

{ if((v = _scgetc((Void_t*)sc, 0)) <= 0)

goto no_match;

else b[n++] = v;

if(mbrtowc(wc, b, n, (mbstate_t*)mbs) == (size_t)(-1))

goto no_match; /* malformed multi-byte char */

else

{ /* multi-byte char converted successfully */

if(fmt == 'c')

return 1;

else if(fmt == 's')

{ if(n > 1 || (n == 1 && !isspace(b[0]) ) )

return 1;

else goto no_match;

}

else if(fmt == '[')

{ if((n == 1 && ac->ok[b[0]]) ||

(n > 1 && _sfwaccept(*wc,ac)) )

return 1;

else goto no_match;

}

else /* if(fmt == '1') match a single wchar_t */

{ if(*wc == ac->wc)

return 1;

else goto no_match;

}

}

}

no_match: /* this unget is lossy on a stream with small buffer */

if((sc->d -= n) < sc->data)

sc->d = sc->data;

return 0;

}

#endif /*_has_multibyte*/

#if __STD_C

int sfvscanf(Sfio_t* f, reg const char* form, va_list args)

#else

int sfvscanf(f,form,args)

Sfio_t* f; /* file to be scanned */

reg char* form; /* scanning format */

va_list args;

#endif

{

reg int inp, shift, base, width;

ssize_t size;

int fmt, flags, dot, n_assign, v, n, n_input;

char *sp;

Accept_t acc;

Argv_t argv;

Sffmt_t *ft;

Fmt_t *fm, *fmstk;

Fmtpos_t* fp;

char *oform;

va_list oargs;

int argp, argn;

int decimal = 0, thousand = 0;

#if _has_multibyte

wchar_t wc;

SFMBDCL(fmbs)

SFMBDCL(mbs)

#endif

Void_t* value; /* location to assign scanned value */

char* t_str;

ssize_t n_str;

/* local buffering system */

Scan_t scd;

uchar *d, *endd, *data;

int peek;

#define SFbuf(f) (_sfbuf(f,&peek), (data = d = f->next), (endd = f->endb) )

#define SFlen(f) (d - data)

#define SFinit(f) ((peek = f->extent < 0 && (f->flags&SF_SHARE)), SFbuf(f) )

#define SFend(f) ((n_input += SFlen(f)), \

(peek ? SFREAD(f,(Void_t*)data,SFlen(f)) : ((f->next = d),0)) )

#define SFgetc(f,c) ((c) = (d < endd || (SFend(f), SFbuf(f), d < endd)) ? \

(int)(*d++) : -1 )

#define SFungetc(f,c) (d -= 1)

SFMTXDECL(f);

SFCVINIT(); /* initialize conversion tables */

SFMTXENTER(f,-1);

if(!form || f->mode != SF_READ && _sfmode(f,SF_READ,0) < 0)

SFMTXRETURN(f, -1);

SFLOCK(f,0);

SFinit(f); /* initialize local buffering system */

n_assign = n_input = 0; inp = -1;

fmstk = NIL(Fmt_t*);

ft = NIL(Sffmt_t*);

fp = NIL(Fmtpos_t*);

argn = -1;

oform = (char*)form;

va_copy(oargs,args);

SFSETLOCALE(&decimal, &thousand);

loop_fmt:

SFMBCLR(&fmbs);

while((fmt = *form++))

{ if(fmt != '%')

{ if(isspace(fmt))

{ if(fmt != '\n' || !(f->flags&SF_LINE))

fmt = -1;

for(;;)

{ if(SFgetc(f,inp) < 0 || inp == fmt)

goto loop_fmt;

else if(!isspace(inp))

{ SFungetc(f,inp);

goto loop_fmt;

}

}

}

else

{ match_1:

#if _has_multibyte

if((n = (int)mbrtowc(&wc,form-1,SFMBMAX,&fmbs)) <= 0)

goto pop_fmt;

if(n > 1)

{ acc.wc = wc;

SCinit(&scd,0); SFMBCLR(&mbs);

v = SFgetwc(&scd, &wc, '1', &acc, &mbs);

SCend(&scd,0);

if(v == 0)

goto pop_fmt;

form += n-1;

}

else

#endif

if(SFgetc(f,inp) != fmt)

{ if(inp < 0)

goto done;

SFungetc(f,inp);

goto pop_fmt;

}

}

continue;

}

if(*form == '%')

{ form += 1;

do SFgetc(f,inp); while(isspace(inp)); /* skip starting blanks */

SFungetc(f,inp);

goto match_1;

}

if(*form == '\0')

goto pop_fmt;

if(*form == '*')

{ flags = SFFMT_SKIP;

form += 1;

}

else flags = 0;

/* matching some pattern */

base = 10; size = -1;

width = dot = 0;

t_str = NIL(char*); n_str = 0;

value = NIL(Void_t*);

argp = -1;

loop_flags: /* LOOP FOR FLAGS, WIDTH, BASE, TYPE */

switch((fmt = *form++) )

{

case LEFTP : /* get the type which is enclosed in balanced () */

t_str = (char*)form;

for(v = 1;;)

{ switch(*form++)

{

case 0 : /* not balanceable, retract */

form = t_str;

t_str = NIL(char*);

n_str = 0;

goto loop_flags;

case LEFTP : /* increasing nested level */

v += 1;

continue;

case RIGHTP : /* decreasing nested level */

if((v -= 1) != 0)

continue;

if(*t_str != '*' )

n_str = (form-1) - t_str;

else

{ t_str = (*_Sffmtintf)(t_str+1,&n);

if(*t_str == '$')

{ if(!fp &&

!(fp = (*_Sffmtposf)(f,oform,oargs,ft,1)) )

goto pop_fmt;

n = FP_SET(n,argn);

}

else n = FP_SET(-1,argn);

if(fp)

{ t_str = fp[n].argv.s;

n_str = fp[n].ft.size;

}

else if(ft && ft->extf )

{ FMTSET(ft, form,args,

LEFTP, 0, 0, 0,0,0,

NIL(char*),0);

n = (*ft->extf)

(f,(Void_t*)&argv,ft);

if(n < 0)

goto pop_fmt;

if(!(ft->flags&SFFMT_VALUE) )

goto t_arg;

if((t_str = argv.s) &&

(n_str = (int)ft->size) < 0)

n_str = strlen(t_str);

}

else

{ t_arg:

if((t_str = va_arg(args,char*)) )

n_str = strlen(t_str);

}

}

goto loop_flags;

}

}

case '#' : /* alternative format */

flags |= SFFMT_ALTER;

goto loop_flags;

case '.' : /* width & base */

dot += 1;

if(isdigit(*form))

{ fmt = *form++;

goto dot_size;

}

else if(*form == '*')

{ form = (*_Sffmtintf)(form+1,&n);

if(*form == '$')

{ form += 1;

if(!fp &&

!(fp = (*_Sffmtposf)(f,oform,oargs,ft,1)) )

goto pop_fmt;

n = FP_SET(n,argn);

}

else n = FP_SET(-1,argn);

if(fp)

v = fp[n].argv.i;

else if(ft && ft->extf )

{ FMTSET(ft, form,args, '.',dot, 0, 0,0,0,

NIL(char*), 0);

if((*ft->extf)(f, (Void_t*)(&argv), ft) < 0)

goto pop_fmt;

if(ft->flags&SFFMT_VALUE)

v = argv.i;

else v = (dot <= 2) ? va_arg(args,int) : 0;

}

else v = (dot <= 2) ? va_arg(args,int) : 0;

if(v < 0)

v = 0;

goto dot_set;

}

else goto loop_flags;

case '0' : case '1' : case '2' : case '3' : case '4' :

case '5' : case '6' : case '7' : case '8' : case '9' :

dot_size :

for(v = fmt-'0'; isdigit(*form); ++form)

v = v*10 + (*form - '0');

if(*form == '$')

{ form += 1;

if(!fp && !(fp = (*_Sffmtposf)(f,oform,oargs,ft,1)) )

goto pop_fmt;

argp = v-1;

goto loop_flags;

}

dot_set :

if(dot == 0 || dot == 1)

width = v;

else if(dot == 2)

base = v;

goto loop_flags;

case 'z' : /* ssize_t or object size */

case 'I' : /* object size */

size = -1; flags = (flags & ~SFFMT_TYPES) | SFFMT_IFLAG;

if(*form == '*')

{ form = (*_Sffmtintf)(form+1,&n);

if(*form == '$')

{ form += 1;

if(!fp &&

!(fp = (*_Sffmtposf)(f,oform,oargs,ft,1)))

goto pop_fmt;

n = FP_SET(n,argn);

}

else n = FP_SET(-1,argn);

if(fp) /* use position list */

size = fp[n].argv.i;

else if(ft && ft->extf )

{ FMTSET(ft, form,args, 'I',sizeof(int), 0, 0,0,0,

NIL(char*), 0);

if((*ft->extf)(f, (Void_t*)(&argv), ft) < 0)

goto pop_fmt;

if(ft->flags&SFFMT_VALUE)

size = argv.i;

else size = va_arg(args,int);

}

else size = va_arg(args,int);

}

else if (fmt == 'z')

flags = (flags&~SFFMT_TYPES) | SFFMT_ZFLAG;

else if(isdigit(*form))

for(size = 0, n = *form; isdigit(n); n = *++form)

size = size*10 + (n - '0');

goto loop_flags;

case 'l' :

size = -1; flags &= ~SFFMT_TYPES;

if(*form == 'l')

{ form += 1;

flags |= SFFMT_LLONG;

}

else flags |= SFFMT_LONG;

goto loop_flags;

case 'h' :

size = -1; flags &= ~SFFMT_TYPES;

if(*form == 'h')

{ form += 1;

flags |= SFFMT_SSHORT;

}

else flags |= SFFMT_SHORT;

goto loop_flags;

case 'L' :

size = -1; flags = (flags&~SFFMT_TYPES) | SFFMT_LDOUBLE;

goto loop_flags;

case 'j' :

size = -1; flags = (flags&~SFFMT_TYPES) | SFFMT_JFLAG;

goto loop_flags;

case 't' :

size = -1; flags = (flags&~SFFMT_TYPES) | SFFMT_TFLAG;

goto loop_flags;

case QUOTE :

if(thousand > 0)

flags |= SFFMT_THOUSAND;

goto loop_flags;

}

/* set object size for scalars */

if(flags & SFFMT_TYPES)

{ if((_Sftype[fmt]&(SFFMT_INT|SFFMT_UINT)) || fmt == 'n')

{ if(flags&SFFMT_LONG)

size = sizeof(long);

else if(flags&SFFMT_SHORT)

size = sizeof(short);

else if(flags&SFFMT_SSHORT)

size = sizeof(char);

else if(flags&SFFMT_TFLAG)

size = sizeof(ptrdiff_t);

else if(flags&SFFMT_ZFLAG)

size = sizeof(size_t);

else if(flags&(SFFMT_LLONG|SFFMT_JFLAG) )

size = sizeof(Sflong_t);

else if(flags&SFFMT_IFLAG)

{ if(size <= 0 ||

size == sizeof(Sflong_t)*CHAR_BIT )

size = sizeof(Sflong_t);

}

else if(size < 0)

size = sizeof(int);

}

else if(_Sftype[fmt]&SFFMT_FLOAT)

{ if(flags&(SFFMT_LONG|SFFMT_LLONG))

size = sizeof(double);

else if(flags&SFFMT_LDOUBLE)

size = sizeof(Sfdouble_t);

else if(flags&SFFMT_IFLAG)

{ if(size <= 0)

size = sizeof(Sfdouble_t);

}

else if(size < 0)

size = sizeof(float);

}

else if(_Sftype[fmt]&SFFMT_CHAR)

{

#if _has_multibyte

if((flags&SFFMT_LONG) || fmt == 'C')

{ size = sizeof(wchar_t) > sizeof(int) ?

sizeof(wchar_t) : sizeof(int);

} else

#endif

if(size < 0)

size = sizeof(int);

}

}

argp = FP_SET(argp,argn);

if(fp)

{ if(!(fp[argp].ft.flags&SFFMT_SKIP) )

{ n_assign += 1;

value = fp[argp].argv.vp;

size = fp[argp].ft.size;

if(ft && ft->extf && fp[argp].ft.fmt != fp[argp].fmt)

fmt = fp[argp].ft.fmt;

}

else flags |= SFFMT_SKIP;

}

else if(ft && ft->extf)

{ FMTSET(ft, form,args, fmt, size,flags, width,0,base, t_str,n_str);

SFend(f); SFOPEN(f,0);

v = (*ft->extf)(f, (Void_t*)&argv, ft);

SFLOCK(f,0); SFbuf(f);

if(v < 0)

goto pop_fmt;

else if(v > 0) /* extf comsumed v input bytes */

{ n_input += v;

if(!(ft->flags&SFFMT_SKIP) )

n_assign += 1;

continue;

}

else /* if(v == 0): extf did not use input stream */

{ FMTGET(ft, form,args, fmt, size, flags, width,n,base);

if((ft->flags&SFFMT_VALUE) && !(ft->flags&SFFMT_SKIP) )

value = argv.vp;

}

}

if(_Sftype[fmt] == 0) /* unknown pattern */

goto pop_fmt;

if(fmt == '!')

{ if(!fp)

fp = (*_Sffmtposf)(f,oform,oargs,ft,1);

else goto pop_fmt;

if(!(argv.ft = va_arg(args,Sffmt_t*)) )

continue;

if(!argv.ft->form && ft ) /* change extension functions */

{ if(ft->eventf &&

(*ft->eventf)(f,SF_DPOP,(Void_t*)form,ft) < 0)

continue;

fmstk->ft = ft = argv.ft;

}

else /* stack a new environment */

{ if(!(fm = (Fmt_t*)malloc(sizeof(Fmt_t))) )

goto done;

ft = fm->ft = argv.ft;

SFMBSET(ft->mbs, &fmbs);

if(ft->form)

{ fm->form = (char*)form; SFMBCPY(&fm->mbs,&fmbs);

va_copy(fm->args,args);

fm->oform = oform;

va_copy(fm->oargs,oargs);

fm->argn = argn;

fm->fp = fp;

form = ft->form; SFMBCLR(ft->mbs);

va_copy(args,ft->args);

argn = -1;

fp = NIL(Fmtpos_t*);

oform = (char*)form;

va_copy(oargs,args);

}

else fm->form = NIL(char*);

fm->eventf = ft->eventf;

fm->next = fmstk;

fmstk = fm;

}

continue;

}

/* get the address to assign value */

if(!value && !(flags&SFFMT_SKIP) )

value = va_arg(args,Void_t*);

if(fmt == 'n') /* return length of consumed input */

{

#if !_ast_intmax_long

if(size == sizeof(Sflong_t) )

*((Sflong_t*)value) = (Sflong_t)(n_input+SFlen(f));

else

#endif

if(size == sizeof(long) )

*((long*)value) = (long)(n_input+SFlen(f));

else if(size == sizeof(short) )

*((short*)value) = (short)(n_input+SFlen(f));

else if(size == sizeof(uchar))

*((uchar*)value) = (uchar)(n_input+SFlen(f));

else *((int*)value) = (int)(n_input+SFlen(f));

continue;

}

/* if get here, start scanning input */

if(width == 0)

width = fmt == 'c' ? 1 : MAXWIDTH;

/* define the first input character */

if(fmt == 'c' || fmt == '[' || fmt == 'C' )

SFgetc(f,inp);

else

{ do { SFgetc(f,inp); }

while(isspace(inp)); /* skip starting blanks */

}

if(inp < 0)

goto done;

if(_Sftype[fmt] == SFFMT_FLOAT)

{ SFungetc(f,inp); SCinit(&scd,1);

argv.ld = _sfdscan((Void_t*)(&scd), _scgetc);

SCend(&scd,1);

if(scd.error >= 0)

{ if(inp >= 0)

SFungetc(f, inp);

goto pop_fmt;

}

if(value)

{

#if !_ast_fltmax_double

if(size == sizeof(Sfdouble_t))

*((Sfdouble_t*)value) = argv.ld;

else

#endif

if(size == sizeof(double))

*((double*)value) = (double)argv.ld;

else *((float*)value) = (float)argv.ld;

n_assign += 1;

}

}

else if(_Sftype[fmt] == SFFMT_UINT || fmt == 'p')

{ if(inp == '-')

{ SFungetc(f,inp);

goto pop_fmt;

}

else goto int_cvt;

}

else if(_Sftype[fmt] == SFFMT_INT)

{ int_cvt:

if(inp == '-' || inp == '+')

{ if(inp == '-')

flags |= SFFMT_MINUS;

while(--width > 0 && SFgetc(f,inp) >= 0)

if(!isspace(inp))

break;

}

if(inp < 0)

goto done;

if(fmt == 'o')

base = 8;

else if(fmt == 'x' || fmt == 'X' || fmt == 'p')

base = 16;

else if(fmt == 'i' && inp == '0') /* self-described data */

{ base = 8;

if(width > 1) /* peek to see if it's a base-16 */

{ if(SFgetc(f,inp) >= 0)

{ if(inp == 'x' || inp == 'X')

base = 16;

SFungetc(f,inp);

}

inp = '0';

}

}

/* now convert */

argv.lu = 0;

if(base == 16)

{ sp = (char*)_Sfcv36;

shift = 4;

if(sp[inp] >= 16)

{ SFungetc(f,inp);

goto pop_fmt;

}

if(inp == '0' && --width > 0)

{ /* skip leading 0x or 0X */

if(SFgetc(f,inp) >= 0 &&

(inp == 'x' || inp == 'X') && --width > 0)

SFgetc(f,inp);

}

if(inp >= 0 && sp[inp] < 16)

goto base_shift;

}

else if(base == 10)

{ for(n = v = 0;; )

{ /* fast base 10 conversion */

#define TEN(x) (((x) << 3) + ((x) << 1) )

if (inp >= '0' && inp <= '9')

{ argv.lu = TEN(argv.lu) + (inp-'0');

n += 1;

}

else if(inp == thousand)

{ if((v && n != 3) || (!v && n > 3) )

break;

v = 1; n = 0;

}

else break;

if((width -= 1) <= 0 || SFgetc(f,inp) < 0)

break;

}

if (!n && !v)

{ SFungetc(f,inp);

goto pop_fmt;

}

if(fmt == 'i' && inp == '#' && !(flags&SFFMT_ALTER) )

{ base = (int)argv.lu;

if(base < 2 || base > SF_RADIX)

goto pop_fmt;

argv.lu = 0;

sp = (char*)(base <= 36 ? _Sfcv36 : _Sfcv64);

if(--width > 0 &&

SFgetc(f,inp) >= 0 && sp[inp] < base)

goto base_conv;

}

}

else

{ /* other bases */

sp = (char*)(base <= 36 ? _Sfcv36 : _Sfcv64);

if(base < 2 || base > SF_RADIX || sp[inp] >= base)

{ SFungetc(f,inp);

goto pop_fmt;

}

base_conv: /* check for power of 2 conversions */

if((base & ~(base-1)) == base)

{ if(base < 8)

shift = base < 4 ? 1 : 2;

else if(base < 32)

shift = base < 16 ? 3 : 4;

else shift = base < 64 ? 5 : 6;

base_shift: do

{ argv.lu = (argv.lu << shift) + sp[inp];

} while(--width > 0 &&

SFgetc(f,inp) >= 0 && sp[inp] < base);

}

else

{ do

{ argv.lu = (argv.lu * base) + sp[inp];

} while(--width > 0 &&

SFgetc(f,inp) >= 0 && sp[inp] < base);

}

}

if(flags&SFFMT_MINUS)

argv.ll = -argv.ll;

if(value)

{ n_assign += 1;

if(fmt == 'p')

#if _more_void_int

*((Void_t**)value) = (Void_t*)((ulong)argv.lu);

#else

*((Void_t**)value) = (Void_t*)((uint)argv.lu);

#endif

#if !_ast_intmax_long

else if(size == sizeof(Sflong_t))

*((Sflong_t*)value) = argv.ll;

#endif

else if(size == sizeof(long))

{ if(fmt == 'd' || fmt == 'i')

*((long*)value) = (long)argv.ll;

else *((ulong*)value) = (ulong)argv.lu;

}

else if(size == sizeof(short))

{ if(fmt == 'd' || fmt == 'i')

*((short*)value) = (short)argv.ll;

else *((ushort*)value) = (ushort)argv.lu;

}

else if(size == sizeof(char) )

{ if(fmt == 'd' || fmt == 'i')

*((char*)value) = (char)argv.ll;

else *((uchar*)value) = (uchar)argv.lu;

}

else

{ if(fmt == 'd' || fmt == 'i')

*((int*)value) = (int)argv.ll;

else *((uint*)value) = (uint)argv.lu;

}

}

}

else if(fmt == 'C' || fmt == 'S')

{ fmt = fmt == 'C' ? 'c' : 's';

flags = (flags & ~SFFMT_TYPES) | SFFMT_LONG;

goto do_string;

}

else if(fmt == 's' || fmt == 'c' || fmt == '[' )

{ do_string:

if(value)

{ if(size < 0)

size = MAXWIDTH;

if(fmt != 'c')

size -= 1;

#if _has_multibyte

if(flags&SFFMT_LONG)

argv.ws = (wchar_t*)value;

else

#endif

argv.s = (char*)value;

}

else size = 0;

if(fmt == '[' && !(form = _sfsetclass(form,&acc,flags)) )

{ SFungetc(f,inp);

goto pop_fmt;

}

n = 0; /* count number of scanned characters */

#if _has_multibyte

if(flags&SFFMT_LONG)

{ SFungetc(f,inp); SCinit(&scd,0); SFMBCLR(&mbs);

for(; width > 0; --width)

{ if(SFgetwc(&scd,&wc,fmt,&acc,&mbs) == 0)

break;

if((n += 1) <= size)

*argv.ws++ = wc;

}

SCend(&scd,0);

}

else

#endif

if(fmt == 's')

{ do

{ if(isspace(inp))

break;

if((n += 1) <= size)

*argv.s++ = inp;

} while(--width > 0 && SFgetc(f,inp) >= 0);

}

else if(fmt == 'c')

{ do

{ if((n += 1) <= size)

*argv.s++ = inp;

} while(--width > 0 && SFgetc(f,inp) >= 0);

}

else /* if(fmt == '[') */

{ do

{ if(!acc.ok[inp])

{ if(n > 0 || (flags&SFFMT_ALTER) )

break;

else

{ SFungetc(f,inp);

goto pop_fmt;

}

}

if((n += 1) <= size)

*argv.s++ = inp;

} while(--width > 0 && SFgetc(f,inp) >= 0);

}

if(value && (n > 0 || fmt == '[') )

{ n_assign += 1;

if(fmt != 'c' && size >= 0)

{

#if _has_multibyte

if(flags&SFFMT_LONG)

*argv.ws = 0;

else

#endif

*argv.s = 0;

}

}

}

if(width > 0 && inp >= 0)

SFungetc(f,inp);

}

pop_fmt:

if(fp)

{ free(fp);

fp = NIL(Fmtpos_t*);

}

while((fm = fmstk) ) /* pop the format stack and continue */

{ if(fm->eventf)

{ if(!form || !form[0])

(*fm->eventf)(f,SF_FINAL,NIL(Void_t*),ft);

else if((*fm->eventf)(f,SF_DPOP,(Void_t*)form,ft) < 0)

goto loop_fmt;

}

fmstk = fm->next;

if((form = fm->form) )

{ SFMBCPY(&fmbs,&fm->mbs);

va_copy(args, fm->args);

oform = fm->oform;

va_copy(oargs,fm->oargs);

argn = fm->argn;

fp = fm->fp;

}

ft = fm->ft;

free(fm);

if(form && form[0])

goto loop_fmt;

}

done:

if(fp)

free(fp);

while((fm = fmstk) )

{ if(fm->eventf)

(*fm->eventf)(f,SF_FINAL,NIL(Void_t*),fm->ft);

fmstk = fm->next;

free(fm);

}

SFend(f);

SFOPEN(f,0);

if(n_assign == 0 && inp < 0)

n_assign = -1;

SFMTXRETURN(f,n_assign);

}