fgets.c revision 3e14f97f673e8a630f076077de35afdd43dc1587
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***********************************************************************/
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chinextern char*
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin unsigned char* is;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin unsigned char* ps;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin if(n <= 0 || !us || (f->mode != SF_READ && _sfmode(f,SF_READ,0) < 0))
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin return NIL(char*);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin { /* peek the read buffer for data */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin if((ps = (uchar*)memccpy((char*)is,(char*)ps,'\n',p)) != NIL(uchar*))
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin if(c != '\n')
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin if(c != '\n')
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin /* gobble up read data and continue */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin else if(n > 0)
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin STDIO_PTR(f, "fgets", char*, (char*, int, Sfio_t*), (s, n, f))
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin return _stdgets(f, s, n, 0);