14887Schin /*********************************************************************** 24887Schin * * 34887Schin * This software is part of the ast package * 4*12068SRoger.Faulkner@Oracle.COM * Copyright (c) 1985-2010 AT&T Intellectual Property * 54887Schin * and is licensed under the * 64887Schin * Common Public License, Version 1.0 * 78462SApril.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 #pragma prototyped 234887Schin 244887Schin /* 254887Schin * return the length of the current record at b, size n, according to f 264887Schin * -1 returned on error 274887Schin * 0 returned if more data is required 284887Schin */ 294887Schin 304887Schin #include <recfmt.h> 314887Schin #include <ctype.h> 324887Schin 334887Schin ssize_t reclen(Recfmt_t f,const void * b,size_t n)344887Schinreclen(Recfmt_t f, const void* b, size_t n) 354887Schin { 364887Schin register unsigned char* s = (unsigned char*)b; 374887Schin register unsigned char* e; 384887Schin size_t h; 394887Schin size_t z; 404887Schin 414887Schin switch (RECTYPE(f)) 424887Schin { 434887Schin case REC_delimited: 444887Schin if (e = (unsigned char*)memchr(s, REC_D_DELIMITER(f), n)) 454887Schin return e - s + 1; 464887Schin return 0; 474887Schin case REC_fixed: 484887Schin return REC_F_SIZE(f); 494887Schin case REC_variable: 504887Schin h = REC_V_HEADER(f); 514887Schin if (n < h) 524887Schin return 0; 534887Schin z = 0; 544887Schin s += REC_V_OFFSET(f); 554887Schin e = s + REC_V_LENGTH(f); 564887Schin if (REC_V_LITTLE(f)) 574887Schin while (e > s) 584887Schin z = (z<<8)|*--e; 594887Schin else 604887Schin while (s < e) 614887Schin z = (z<<8)|*s++; 624887Schin if (!REC_V_INCLUSIVE(f)) 634887Schin z += h; 644887Schin else if (z < h) 654887Schin z = h; 664887Schin return z; 674887Schin case REC_method: 684887Schin return -1; 694887Schin } 704887Schin return -1; 714887Schin } 72