14887Schin /*********************************************************************** 24887Schin * * 34887Schin * This software is part of the ast package * 4*12068SRoger.Faulkner@Oracle.COM * Copyright (c) 1982-2010 AT&T Intellectual Property * 54887Schin * and is licensed under the * 64887Schin * Common Public License, Version 1.0 * 78462SApril.Chin@Sun.COM * by AT&T Intellectual Property * 84887Schin * * 94887Schin * A copy of the License is available at * 104887Schin * http://www.opensource.org/licenses/cpl1.0.txt * 114887Schin * (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) * 124887Schin * * 134887Schin * Information and Software Systems Research * 144887Schin * AT&T Research * 154887Schin * Florham Park NJ * 164887Schin * * 174887Schin * David Korn <dgk@research.att.com> * 184887Schin * * 194887Schin ***********************************************************************/ 204887Schin #pragma prototyped 214887Schin #ifndef fcgetc 224887Schin /* 234887Schin * David Korn 244887Schin * AT&T Labs 254887Schin * 264887Schin * Fast character input with sfio text streams and strings 274887Schin * 284887Schin */ 294887Schin 304887Schin #include <sfio.h> 314887Schin 324887Schin typedef struct _fcin 334887Schin { 344887Schin Sfio_t *_fcfile; /* input file pointer */ 354887Schin unsigned char *fcbuff; /* pointer to input buffer */ 364887Schin unsigned char *fclast; /* pointer to end of input buffer */ 374887Schin unsigned char *fcptr; /* pointer to next input char */ 384887Schin unsigned char fcchar; /* saved character */ 398462SApril.Chin@Sun.COM void (*fcfun)(Sfio_t*,const char*,int,void*); /* advance function */ 408462SApril.Chin@Sun.COM void *context; /* context pointer */ 414887Schin int fcleft; /* for multibyte boundary */ 424887Schin Sfoff_t fcoff; /* offset for last read */ 434887Schin } Fcin_t; 444887Schin 454887Schin #define fcfile() (_Fcin._fcfile) 464887Schin #define fcgetc(c) (((c=fcget()) || (c=fcfill())), c) 474887Schin #define fcget() ((int)(*_Fcin.fcptr++)) 484887Schin #define fcpeek(n) ((int)_Fcin.fcptr[n]) 494887Schin #define fcseek(n) ((char*)(_Fcin.fcptr+=(n))) 504887Schin #define fcfirst() ((char*)_Fcin.fcbuff) 514887Schin #define fcsopen(s) (_Fcin._fcfile=(Sfio_t*)0,_Fcin.fcbuff=_Fcin.fcptr=(unsigned char*)(s)) 524887Schin #define fctell() (_Fcin.fcoff + (_Fcin.fcptr-_Fcin.fcbuff)) 534887Schin #define fcsave(x) (*(x) = _Fcin) 544887Schin #define fcrestore(x) (_Fcin = *(x)) 554887Schin extern int fcfill(void); 564887Schin extern int fcfopen(Sfio_t*); 574887Schin extern int fcclose(void); 588462SApril.Chin@Sun.COM void fcnotify(void(*)(Sfio_t*,const char*,int,void*),void*); 594887Schin extern int fcmbstate(const char*,int*,int*); 604887Schin 614887Schin extern Fcin_t _Fcin; /* used by macros */ 624887Schin 634887Schin #endif /* fcgetc */ 64