/***********************************************************************
* *
* This software is part of the ast package *
* Copyright (c) 1985-2012 AT&T Intellectual Property *
* and is licensed under the *
* Eclipse Public License, Version 1.0 *
* by AT&T Intellectual Property *
* *
* A copy of the License is available at *
* http://www.eclipse.org/org/documents/epl-v10.html *
* (with md5 checksum b35adb5213ca9657e911e9befb180842) *
* *
* Information and Software Systems Research *
* AT&T Research *
* Florham Park NJ *
* *
* Glenn Fowler <gsf@research.att.com> *
* David Korn <dgk@research.att.com> *
* Phong Vo <kpv@research.att.com> *
* *
***********************************************************************/
#include "sfhdr.h"
/* The main engine for reading formatted data
**
** Written by Kiem-Phong Vo.
*/
#define MAXWIDTH (int)(((uint)~0)>>1) /* max amount to scan */
/*
* pull in a private strtold()
*/
#include "sfstrtof.h"
/* refresh stream buffer - taking care of unseekable/share streams too */
#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);
}
}
/* buffer used during scanning of a double value or a multi-byte
character. the fields mirror certain local variables in sfvscanf. */
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;
/* ds != 0 for scanning double values */
#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++));
}
/* structure to match characters in a character class */
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.
this won't help streams with small buffers - c'est la vie! */
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);
}