14887Schin /*********************************************************************** 24887Schin * * 34887Schin * This software is part of the ast package * 4*8462SApril.Chin@Sun.COM * Copyright (c) 1985-2008 AT&T Intellectual Property * 54887Schin * and is licensed under the * 64887Schin * Common Public License, Version 1.0 * 7*8462SApril.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 * Glenn Fowler <gsf@research.att.com> * 184887Schin * David Korn <dgk@research.att.com> * 194887Schin * Phong Vo <kpv@research.att.com> * 204887Schin * * 214887Schin ***********************************************************************/ 224887Schin #include "sfhdr.h" 234887Schin 244887Schin /* Read a long value coded in a portable format. 254887Schin ** 264887Schin ** Written by Kiem-Phong Vo 274887Schin */ 284887Schin 294887Schin #if __STD_C 30*8462SApril.Chin@Sun.COM Sflong_t sfgetl(Sfio_t* f) 314887Schin #else 324887Schin Sflong_t sfgetl(f) 33*8462SApril.Chin@Sun.COM Sfio_t* f; 344887Schin #endif 354887Schin { 364887Schin Sflong_t v; 37*8462SApril.Chin@Sun.COM uchar *s, *ends, c; 38*8462SApril.Chin@Sun.COM int p; 39*8462SApril.Chin@Sun.COM SFMTXDECL(f); 404887Schin 41*8462SApril.Chin@Sun.COM SFMTXENTER(f,(Sflong_t)(-1)); 424887Schin 434887Schin if(f->mode != SF_READ && _sfmode(f,SF_READ,0) < 0) 444887Schin SFMTXRETURN(f, (Sflong_t)(-1)); 454887Schin SFLOCK(f,0); 464887Schin 474887Schin for(v = 0;;) 484887Schin { if(SFRPEEK(f,s,p) <= 0) 494887Schin { f->flags |= SF_ERROR; 504887Schin v = (Sflong_t)(-1); 514887Schin goto done; 524887Schin } 534887Schin for(ends = s+p; s < ends;) 544887Schin { c = *s++; 554887Schin if(c&SF_MORE) 564887Schin v = ((Sfulong_t)v << SF_UBITS) | SFUVALUE(c); 574887Schin else 584887Schin { /* special translation for this byte */ 594887Schin v = ((Sfulong_t)v << SF_SBITS) | SFSVALUE(c); 604887Schin f->next = s; 614887Schin v = (c&SF_SIGN) ? -v-1 : v; 624887Schin goto done; 634887Schin } 644887Schin } 654887Schin f->next = s; 664887Schin } 674887Schin done : 684887Schin SFOPEN(f,0); 694887Schin SFMTXRETURN(f, v); 704887Schin } 71