da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin/***********************************************************************
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin* This software is part of the ast package *
3e14f97f673e8a630f076077de35afdd43dc1587Roger A. Faulkner* Copyright (c) 1985-2010 AT&T Intellectual Property *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin* and is licensed under the *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin* Common Public License, Version 1.0 *
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin* by AT&T Intellectual Property *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin* A copy of the License is available at *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin* (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin* Information and Software Systems Research *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin* AT&T Research *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin* Florham Park NJ *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin* Glenn Fowler <gsf@research.att.com> *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin* David Korn <dgk@research.att.com> *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin* Phong Vo <kpv@research.att.com> *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin***********************************************************************/
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin/* Read a record delineated by a character.
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin** The record length can be accessed via sfvalue(f).
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin** Written by Kiem-Phong Vo
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin if(rc < 0 || (f->mode != SF_READ && _sfmode(f,SF_READ,0) < 0) )
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin /* buffer to be returned */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin /* compatibility mode */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin type = type < 0 ? SF_LASTR : type == 1 ? SF_STRING : type;
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin { if((f->flags&SF_STRING) && (un = f->endb - f->next))
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin else if((rsrv = f->rsrv) && (un = -rsrv->slen) > 0)
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin { /* fill buffer if necessary */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin { /* for unseekable devices, peek-read 1 record */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin /* fill buffer the conventional way */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin if(SFRPEEK(f,s,n) <= 0)
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin while(*s != rc)
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin { /* returning data in buffer */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin /* amount to be read */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin n = s - f->next;
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin if(!found && (_Sfmaxr > 0 && un+n+1 >= _Sfmaxr || (f->flags&SF_STRING))) /* already exceed limit */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin /* get internal buffer */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin /* now copy data */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin /* prepare for a call to get the broken record */