1da2e3ebdSchin /*********************************************************************** 2da2e3ebdSchin * * 3da2e3ebdSchin * This software is part of the ast package * 4*b30d1939SAndy Fiddaman * Copyright (c) 1982-2011 AT&T Intellectual Property * 5da2e3ebdSchin * and is licensed under the * 6*b30d1939SAndy Fiddaman * Eclipse Public License, Version 1.0 * 77c2fbfb3SApril Chin * by AT&T Intellectual Property * 8da2e3ebdSchin * * 9da2e3ebdSchin * A copy of the License is available at * 10*b30d1939SAndy Fiddaman * http://www.eclipse.org/org/documents/epl-v10.html * 11*b30d1939SAndy Fiddaman * (with md5 checksum b35adb5213ca9657e911e9befb180842) * 12da2e3ebdSchin * * 13da2e3ebdSchin * Information and Software Systems Research * 14da2e3ebdSchin * AT&T Research * 15da2e3ebdSchin * Florham Park NJ * 16da2e3ebdSchin * * 17da2e3ebdSchin * David Korn <dgk@research.att.com> * 18da2e3ebdSchin * * 19da2e3ebdSchin ***********************************************************************/ 20da2e3ebdSchin #pragma prototyped 21da2e3ebdSchin #ifndef fcgetc 22da2e3ebdSchin /* 23da2e3ebdSchin * David Korn 24da2e3ebdSchin * AT&T Labs 25da2e3ebdSchin * 26da2e3ebdSchin * Fast character input with sfio text streams and strings 27da2e3ebdSchin * 28da2e3ebdSchin */ 29da2e3ebdSchin 30da2e3ebdSchin #include <sfio.h> 31da2e3ebdSchin 32da2e3ebdSchin typedef struct _fcin 33da2e3ebdSchin { 34da2e3ebdSchin Sfio_t *_fcfile; /* input file pointer */ 35da2e3ebdSchin unsigned char *fcbuff; /* pointer to input buffer */ 36da2e3ebdSchin unsigned char *fclast; /* pointer to end of input buffer */ 37da2e3ebdSchin unsigned char *fcptr; /* pointer to next input char */ 38da2e3ebdSchin unsigned char fcchar; /* saved character */ 39*b30d1939SAndy Fiddaman short fclen; /* last multibyte char len */ 407c2fbfb3SApril Chin void (*fcfun)(Sfio_t*,const char*,int,void*); /* advance function */ 417c2fbfb3SApril Chin void *context; /* context pointer */ 42da2e3ebdSchin int fcleft; /* for multibyte boundary */ 43da2e3ebdSchin Sfoff_t fcoff; /* offset for last read */ 44da2e3ebdSchin } Fcin_t; 45da2e3ebdSchin 46*b30d1939SAndy Fiddaman #if SHOPT_MULTIBYTE 47*b30d1939SAndy Fiddaman # define fcmbget(x) (mbwide()?_fcmbget(x):fcget()) 48*b30d1939SAndy Fiddaman #else 49*b30d1939SAndy Fiddaman # define fcmbget(x) (fcget()) 50*b30d1939SAndy Fiddaman #endif 51da2e3ebdSchin #define fcfile() (_Fcin._fcfile) 52da2e3ebdSchin #define fcgetc(c) (((c=fcget()) || (c=fcfill())), c) 53da2e3ebdSchin #define fcget() ((int)(*_Fcin.fcptr++)) 54da2e3ebdSchin #define fcpeek(n) ((int)_Fcin.fcptr[n]) 55da2e3ebdSchin #define fcseek(n) ((char*)(_Fcin.fcptr+=(n))) 56da2e3ebdSchin #define fcfirst() ((char*)_Fcin.fcbuff) 57*b30d1939SAndy Fiddaman #define fclast() ((char*)_Fcin.fclast) 58*b30d1939SAndy Fiddaman #define fcleft() (_Fcin.fclast-_Fcin.fcptr) 59*b30d1939SAndy Fiddaman #define fcsopen(s) (_Fcin._fcfile=(Sfio_t*)0,_Fcin.fclen=1,_Fcin.fcbuff=_Fcin.fcptr=(unsigned char*)(s)) 60da2e3ebdSchin #define fctell() (_Fcin.fcoff + (_Fcin.fcptr-_Fcin.fcbuff)) 61da2e3ebdSchin #define fcsave(x) (*(x) = _Fcin) 62da2e3ebdSchin #define fcrestore(x) (_Fcin = *(x)) 63da2e3ebdSchin extern int fcfill(void); 64da2e3ebdSchin extern int fcfopen(Sfio_t*); 65da2e3ebdSchin extern int fcclose(void); 667c2fbfb3SApril Chin void fcnotify(void(*)(Sfio_t*,const char*,int,void*),void*); 67*b30d1939SAndy Fiddaman extern int _fcmbget(short*); 68da2e3ebdSchin 69da2e3ebdSchin extern Fcin_t _Fcin; /* used by macros */ 70da2e3ebdSchin 71da2e3ebdSchin #endif /* fcgetc */ 72