1267843Sdelphij/* $NetBSD: fmtcheck.c,v 1.8 2008/04/28 20:22:59 martin Exp $ */ 2267843Sdelphij 3267843Sdelphij/*- 4267843Sdelphij * Copyright (c) 2000 The NetBSD Foundation, Inc. 5267843Sdelphij * All rights reserved. 6267843Sdelphij * 7267843Sdelphij * This code was contributed to The NetBSD Foundation by Allen Briggs. 8267843Sdelphij * 9267843Sdelphij * Redistribution and use in source and binary forms, with or without 10267843Sdelphij * modification, are permitted provided that the following conditions 11267843Sdelphij * are met: 12267843Sdelphij * 1. Redistributions of source code must retain the above copyright 13267843Sdelphij * notice, this list of conditions and the following disclaimer. 14267843Sdelphij * 2. Redistributions in binary form must reproduce the above copyright 15267843Sdelphij * notice, this list of conditions and the following disclaimer in the 16267843Sdelphij * documentation and/or other materials provided with the distribution. 17267843Sdelphij * 18267843Sdelphij * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 19267843Sdelphij * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 20267843Sdelphij * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 21267843Sdelphij * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 22267843Sdelphij * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23267843Sdelphij * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24267843Sdelphij * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25267843Sdelphij * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26267843Sdelphij * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27267843Sdelphij * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28267843Sdelphij * POSSIBILITY OF SUCH DAMAGE. 29267843Sdelphij */ 30267843Sdelphij 31267843Sdelphij#include "file.h" 32267843Sdelphij 33267843Sdelphij#include <stdio.h> 34267843Sdelphij#include <string.h> 35267843Sdelphij#include <ctype.h> 36267843Sdelphij 37267843Sdelphijenum __e_fmtcheck_types { 38267843Sdelphij FMTCHECK_START, 39267843Sdelphij FMTCHECK_SHORT, 40267843Sdelphij FMTCHECK_INT, 41267843Sdelphij FMTCHECK_LONG, 42267843Sdelphij FMTCHECK_QUAD, 43267843Sdelphij FMTCHECK_SHORTPOINTER, 44267843Sdelphij FMTCHECK_INTPOINTER, 45267843Sdelphij FMTCHECK_LONGPOINTER, 46267843Sdelphij FMTCHECK_QUADPOINTER, 47267843Sdelphij FMTCHECK_DOUBLE, 48267843Sdelphij FMTCHECK_LONGDOUBLE, 49267843Sdelphij FMTCHECK_STRING, 50267843Sdelphij FMTCHECK_WIDTH, 51267843Sdelphij FMTCHECK_PRECISION, 52267843Sdelphij FMTCHECK_DONE, 53267843Sdelphij FMTCHECK_UNKNOWN 54267843Sdelphij}; 55267843Sdelphijtypedef enum __e_fmtcheck_types EFT; 56267843Sdelphij 57267843Sdelphij#define RETURN(pf,f,r) do { \ 58267843Sdelphij *(pf) = (f); \ 59267843Sdelphij return r; \ 60267843Sdelphij } /*NOTREACHED*/ /*CONSTCOND*/ while (0) 61267843Sdelphij 62267843Sdelphijstatic EFT 63267843Sdelphijget_next_format_from_precision(const char **pf) 64267843Sdelphij{ 65267843Sdelphij int sh, lg, quad, longdouble; 66267843Sdelphij const char *f; 67267843Sdelphij 68267843Sdelphij sh = lg = quad = longdouble = 0; 69267843Sdelphij 70267843Sdelphij f = *pf; 71267843Sdelphij switch (*f) { 72267843Sdelphij case 'h': 73267843Sdelphij f++; 74267843Sdelphij sh = 1; 75267843Sdelphij break; 76267843Sdelphij case 'l': 77267843Sdelphij f++; 78267843Sdelphij if (!*f) RETURN(pf,f,FMTCHECK_UNKNOWN); 79267843Sdelphij if (*f == 'l') { 80267843Sdelphij f++; 81267843Sdelphij quad = 1; 82267843Sdelphij } else { 83267843Sdelphij lg = 1; 84267843Sdelphij } 85267843Sdelphij break; 86267843Sdelphij case 'q': 87267843Sdelphij f++; 88267843Sdelphij quad = 1; 89267843Sdelphij break; 90267843Sdelphij case 'L': 91267843Sdelphij f++; 92267843Sdelphij longdouble = 1; 93267843Sdelphij break; 94267843Sdelphij default: 95267843Sdelphij break; 96267843Sdelphij } 97267843Sdelphij if (!*f) RETURN(pf,f,FMTCHECK_UNKNOWN); 98267843Sdelphij if (strchr("diouxX", *f)) { 99267843Sdelphij if (longdouble) 100267843Sdelphij RETURN(pf,f,FMTCHECK_UNKNOWN); 101267843Sdelphij if (lg) 102267843Sdelphij RETURN(pf,f,FMTCHECK_LONG); 103267843Sdelphij if (quad) 104267843Sdelphij RETURN(pf,f,FMTCHECK_QUAD); 105267843Sdelphij RETURN(pf,f,FMTCHECK_INT); 106267843Sdelphij } 107267843Sdelphij if (*f == 'n') { 108267843Sdelphij if (longdouble) 109267843Sdelphij RETURN(pf,f,FMTCHECK_UNKNOWN); 110267843Sdelphij if (sh) 111267843Sdelphij RETURN(pf,f,FMTCHECK_SHORTPOINTER); 112267843Sdelphij if (lg) 113267843Sdelphij RETURN(pf,f,FMTCHECK_LONGPOINTER); 114267843Sdelphij if (quad) 115267843Sdelphij RETURN(pf,f,FMTCHECK_QUADPOINTER); 116267843Sdelphij RETURN(pf,f,FMTCHECK_INTPOINTER); 117267843Sdelphij } 118267843Sdelphij if (strchr("DOU", *f)) { 119267843Sdelphij if (sh + lg + quad + longdouble) 120267843Sdelphij RETURN(pf,f,FMTCHECK_UNKNOWN); 121267843Sdelphij RETURN(pf,f,FMTCHECK_LONG); 122267843Sdelphij } 123267843Sdelphij if (strchr("eEfg", *f)) { 124267843Sdelphij if (longdouble) 125267843Sdelphij RETURN(pf,f,FMTCHECK_LONGDOUBLE); 126267843Sdelphij if (sh + lg + quad) 127267843Sdelphij RETURN(pf,f,FMTCHECK_UNKNOWN); 128267843Sdelphij RETURN(pf,f,FMTCHECK_DOUBLE); 129267843Sdelphij } 130267843Sdelphij if (*f == 'c') { 131267843Sdelphij if (sh + lg + quad + longdouble) 132267843Sdelphij RETURN(pf,f,FMTCHECK_UNKNOWN); 133267843Sdelphij RETURN(pf,f,FMTCHECK_INT); 134267843Sdelphij } 135267843Sdelphij if (*f == 's') { 136267843Sdelphij if (sh + lg + quad + longdouble) 137267843Sdelphij RETURN(pf,f,FMTCHECK_UNKNOWN); 138267843Sdelphij RETURN(pf,f,FMTCHECK_STRING); 139267843Sdelphij } 140267843Sdelphij if (*f == 'p') { 141267843Sdelphij if (sh + lg + quad + longdouble) 142267843Sdelphij RETURN(pf,f,FMTCHECK_UNKNOWN); 143267843Sdelphij RETURN(pf,f,FMTCHECK_LONG); 144267843Sdelphij } 145267843Sdelphij RETURN(pf,f,FMTCHECK_UNKNOWN); 146267843Sdelphij /*NOTREACHED*/ 147267843Sdelphij} 148267843Sdelphij 149267843Sdelphijstatic EFT 150267843Sdelphijget_next_format_from_width(const char **pf) 151267843Sdelphij{ 152267843Sdelphij const char *f; 153267843Sdelphij 154267843Sdelphij f = *pf; 155267843Sdelphij if (*f == '.') { 156267843Sdelphij f++; 157267843Sdelphij if (*f == '*') { 158267843Sdelphij RETURN(pf,f,FMTCHECK_PRECISION); 159267843Sdelphij } 160267843Sdelphij /* eat any precision (empty is allowed) */ 161267843Sdelphij while (isdigit((unsigned char)*f)) f++; 162267843Sdelphij if (!*f) RETURN(pf,f,FMTCHECK_UNKNOWN); 163267843Sdelphij } 164267843Sdelphij RETURN(pf,f,get_next_format_from_precision(pf)); 165267843Sdelphij /*NOTREACHED*/ 166267843Sdelphij} 167267843Sdelphij 168267843Sdelphijstatic EFT 169267843Sdelphijget_next_format(const char **pf, EFT eft) 170267843Sdelphij{ 171267843Sdelphij int infmt; 172267843Sdelphij const char *f; 173267843Sdelphij 174267843Sdelphij if (eft == FMTCHECK_WIDTH) { 175267843Sdelphij (*pf)++; 176267843Sdelphij return get_next_format_from_width(pf); 177267843Sdelphij } else if (eft == FMTCHECK_PRECISION) { 178267843Sdelphij (*pf)++; 179267843Sdelphij return get_next_format_from_precision(pf); 180267843Sdelphij } 181267843Sdelphij 182267843Sdelphij f = *pf; 183267843Sdelphij infmt = 0; 184267843Sdelphij while (!infmt) { 185267843Sdelphij f = strchr(f, '%'); 186267843Sdelphij if (f == NULL) 187267843Sdelphij RETURN(pf,f,FMTCHECK_DONE); 188267843Sdelphij f++; 189267843Sdelphij if (!*f) 190267843Sdelphij RETURN(pf,f,FMTCHECK_UNKNOWN); 191267843Sdelphij if (*f != '%') 192267843Sdelphij infmt = 1; 193267843Sdelphij else 194267843Sdelphij f++; 195267843Sdelphij } 196267843Sdelphij 197267843Sdelphij /* Eat any of the flags */ 198267843Sdelphij while (*f && (strchr("#0- +", *f))) 199267843Sdelphij f++; 200267843Sdelphij 201267843Sdelphij if (*f == '*') { 202267843Sdelphij RETURN(pf,f,FMTCHECK_WIDTH); 203267843Sdelphij } 204267843Sdelphij /* eat any width */ 205267843Sdelphij while (isdigit((unsigned char)*f)) f++; 206267843Sdelphij if (!*f) { 207267843Sdelphij RETURN(pf,f,FMTCHECK_UNKNOWN); 208267843Sdelphij } 209267843Sdelphij 210267843Sdelphij RETURN(pf,f,get_next_format_from_width(pf)); 211267843Sdelphij /*NOTREACHED*/ 212267843Sdelphij} 213267843Sdelphij 214267843Sdelphijconst char * 215267843Sdelphijfmtcheck(const char *f1, const char *f2) 216267843Sdelphij{ 217267843Sdelphij const char *f1p, *f2p; 218267843Sdelphij EFT f1t, f2t; 219267843Sdelphij 220267843Sdelphij if (!f1) return f2; 221267843Sdelphij 222267843Sdelphij f1p = f1; 223267843Sdelphij f1t = FMTCHECK_START; 224267843Sdelphij f2p = f2; 225267843Sdelphij f2t = FMTCHECK_START; 226267843Sdelphij while ((f1t = get_next_format(&f1p, f1t)) != FMTCHECK_DONE) { 227267843Sdelphij if (f1t == FMTCHECK_UNKNOWN) 228267843Sdelphij return f2; 229267843Sdelphij f2t = get_next_format(&f2p, f2t); 230267843Sdelphij if (f1t != f2t) 231267843Sdelphij return f2; 232267843Sdelphij } 233267843Sdelphij return f1; 234267843Sdelphij} 235