1N/A/***********************************************************************
1N/A* *
1N/A* This software is part of the ast package *
1N/A* Copyright (c) 1985-2011 AT&T Intellectual Property *
1N/A* and is licensed under the *
1N/A* Common Public License, Version 1.0 *
1N/A* by AT&T Intellectual Property *
1N/A* *
1N/A* A copy of the License is available at *
1N/A* http://www.opensource.org/licenses/cpl1.0.txt *
1N/A* (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) *
1N/A* *
1N/A* Information and Software Systems Research *
1N/A* AT&T Research *
1N/A* Florham Park NJ *
1N/A* *
1N/A* Glenn Fowler <gsf@research.att.com> *
1N/A* David Korn <dgk@research.att.com> *
1N/A* Phong Vo <kpv@research.att.com> *
1N/A* *
1N/A***********************************************************************/
1N/A#include "sfhdr.h"
1N/A
1N/A/* Read a long value coded in a portable format.
1N/A**
1N/A** Written by Kiem-Phong Vo
1N/A*/
1N/A
1N/A#if __STD_C
1N/ASflong_t sfgetl(Sfio_t* f)
1N/A#else
1N/ASflong_t sfgetl(f)
1N/ASfio_t* f;
1N/A#endif
1N/A{
1N/A Sflong_t v;
1N/A uchar *s, *ends, c;
1N/A int p;
1N/A SFMTXDECL(f);
1N/A
1N/A SFMTXENTER(f,(Sflong_t)(-1));
1N/A
1N/A if(f->mode != SF_READ && _sfmode(f,SF_READ,0) < 0)
1N/A SFMTXRETURN(f, (Sflong_t)(-1));
1N/A SFLOCK(f,0);
1N/A
1N/A for(v = 0;;)
1N/A { if(SFRPEEK(f,s,p) <= 0)
1N/A { f->flags |= SF_ERROR;
1N/A v = (Sflong_t)(-1);
1N/A goto done;
1N/A }
1N/A for(ends = s+p; s < ends;)
1N/A { c = *s++;
1N/A if(c&SF_MORE)
1N/A v = ((Sfulong_t)v << SF_UBITS) | SFUVALUE(c);
1N/A else
1N/A { /* special translation for this byte */
1N/A v = ((Sfulong_t)v << SF_SBITS) | SFSVALUE(c);
1N/A f->next = s;
1N/A v = (c&SF_SIGN) ? -v-1 : v;
1N/A goto done;
1N/A }
1N/A }
1N/A f->next = s;
1N/A }
1N/Adone :
1N/A SFOPEN(f,0);
1N/A SFMTXRETURN(f, v);
1N/A}