1*4887Schin /*********************************************************************** 2*4887Schin * * 3*4887Schin * This software is part of the ast package * 4*4887Schin * Copyright (c) 1982-2007 AT&T Knowledge Ventures * 5*4887Schin * and is licensed under the * 6*4887Schin * Common Public License, Version 1.0 * 7*4887Schin * by AT&T Knowledge Ventures * 8*4887Schin * * 9*4887Schin * A copy of the License is available at * 10*4887Schin * http://www.opensource.org/licenses/cpl1.0.txt * 11*4887Schin * (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) * 12*4887Schin * * 13*4887Schin * Information and Software Systems Research * 14*4887Schin * AT&T Research * 15*4887Schin * Florham Park NJ * 16*4887Schin * * 17*4887Schin * David Korn <dgk@research.att.com> * 18*4887Schin * * 19*4887Schin ***********************************************************************/ 20*4887Schin #pragma prototyped 21*4887Schin #ifndef fcgetc 22*4887Schin /* 23*4887Schin * David Korn 24*4887Schin * AT&T Labs 25*4887Schin * 26*4887Schin * Fast character input with sfio text streams and strings 27*4887Schin * 28*4887Schin */ 29*4887Schin 30*4887Schin #include <sfio.h> 31*4887Schin 32*4887Schin typedef struct _fcin 33*4887Schin { 34*4887Schin Sfio_t *_fcfile; /* input file pointer */ 35*4887Schin unsigned char *fcbuff; /* pointer to input buffer */ 36*4887Schin unsigned char *fclast; /* pointer to end of input buffer */ 37*4887Schin unsigned char *fcptr; /* pointer to next input char */ 38*4887Schin unsigned char fcchar; /* saved character */ 39*4887Schin void (*fcfun)(Sfio_t*,const char*,int); /* advance function */ 40*4887Schin int fcleft; /* for multibyte boundary */ 41*4887Schin Sfoff_t fcoff; /* offset for last read */ 42*4887Schin } Fcin_t; 43*4887Schin 44*4887Schin #define fcfile() (_Fcin._fcfile) 45*4887Schin #define fcgetc(c) (((c=fcget()) || (c=fcfill())), c) 46*4887Schin #define fcget() ((int)(*_Fcin.fcptr++)) 47*4887Schin #define fcpeek(n) ((int)_Fcin.fcptr[n]) 48*4887Schin #define fcseek(n) ((char*)(_Fcin.fcptr+=(n))) 49*4887Schin #define fcfirst() ((char*)_Fcin.fcbuff) 50*4887Schin #define fcsopen(s) (_Fcin._fcfile=(Sfio_t*)0,_Fcin.fcbuff=_Fcin.fcptr=(unsigned char*)(s)) 51*4887Schin #define fctell() (_Fcin.fcoff + (_Fcin.fcptr-_Fcin.fcbuff)) 52*4887Schin #define fcsave(x) (*(x) = _Fcin) 53*4887Schin #define fcrestore(x) (_Fcin = *(x)) 54*4887Schin extern int fcfill(void); 55*4887Schin extern int fcfopen(Sfio_t*); 56*4887Schin extern int fcclose(void); 57*4887Schin void fcnotify(void(*)(Sfio_t*,const char*,int)); 58*4887Schin extern int fcmbstate(const char*,int*,int*); 59*4887Schin 60*4887Schin extern Fcin_t _Fcin; /* used by macros */ 61*4887Schin 62*4887Schin #endif /* fcgetc */ 63