1 /* $NetBSD: fmtcheck.c,v 1.8 2008/04/28 20:22:59 martin Exp $ */
4 * Copyright (c) 2000 The NetBSD Foundation, Inc.
7 * This code was contributed to The NetBSD Foundation by Allen Briggs.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
18 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
19 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
20 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
21 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
22 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
28 * POSSIBILITY OF SUCH DAMAGE.
37 enum __e_fmtcheck_types {
43 FMTCHECK_SHORTPOINTER,
55 typedef enum __e_fmtcheck_types EFT;
57 #define RETURN(pf,f,r) do { \
60 } /*NOTREACHED*/ /*CONSTCOND*/ while (0)
63 get_next_format_from_precision(const char **pf)
65 int sh, lg, quad, longdouble;
68 sh = lg = quad = longdouble = 0;
78 if (!*f) RETURN(pf,f,FMTCHECK_UNKNOWN);
97 if (!*f) RETURN(pf,f,FMTCHECK_UNKNOWN);
98 if (strchr("diouxX", *f)) {
100 RETURN(pf,f,FMTCHECK_UNKNOWN);
102 RETURN(pf,f,FMTCHECK_LONG);
104 RETURN(pf,f,FMTCHECK_QUAD);
105 RETURN(pf,f,FMTCHECK_INT);
109 RETURN(pf,f,FMTCHECK_UNKNOWN);
111 RETURN(pf,f,FMTCHECK_SHORTPOINTER);
113 RETURN(pf,f,FMTCHECK_LONGPOINTER);
115 RETURN(pf,f,FMTCHECK_QUADPOINTER);
116 RETURN(pf,f,FMTCHECK_INTPOINTER);
118 if (strchr("DOU", *f)) {
119 if (sh + lg + quad + longdouble)
120 RETURN(pf,f,FMTCHECK_UNKNOWN);
121 RETURN(pf,f,FMTCHECK_LONG);
123 if (strchr("eEfg", *f)) {
125 RETURN(pf,f,FMTCHECK_LONGDOUBLE);
127 RETURN(pf,f,FMTCHECK_UNKNOWN);
128 RETURN(pf,f,FMTCHECK_DOUBLE);
131 if (sh + lg + quad + longdouble)
132 RETURN(pf,f,FMTCHECK_UNKNOWN);
133 RETURN(pf,f,FMTCHECK_INT);
136 if (sh + lg + quad + longdouble)
137 RETURN(pf,f,FMTCHECK_UNKNOWN);
138 RETURN(pf,f,FMTCHECK_STRING);
141 if (sh + lg + quad + longdouble)
142 RETURN(pf,f,FMTCHECK_UNKNOWN);
143 RETURN(pf,f,FMTCHECK_LONG);
145 RETURN(pf,f,FMTCHECK_UNKNOWN);
150 get_next_format_from_width(const char **pf)
158 RETURN(pf,f,FMTCHECK_PRECISION);
160 /* eat any precision (empty is allowed) */
161 while (isdigit((unsigned char)*f)) f++;
162 if (!*f) RETURN(pf,f,FMTCHECK_UNKNOWN);
164 RETURN(pf,f,get_next_format_from_precision(pf));
169 get_next_format(const char **pf, EFT eft)
174 if (eft == FMTCHECK_WIDTH) {
176 return get_next_format_from_width(pf);
177 } else if (eft == FMTCHECK_PRECISION) {
179 return get_next_format_from_precision(pf);
187 RETURN(pf,f,FMTCHECK_DONE);
190 RETURN(pf,f,FMTCHECK_UNKNOWN);
197 /* Eat any of the flags */
198 while (*f && (strchr("#0- +", *f)))
202 RETURN(pf,f,FMTCHECK_WIDTH);
205 while (isdigit((unsigned char)*f)) f++;
207 RETURN(pf,f,FMTCHECK_UNKNOWN);
210 RETURN(pf,f,get_next_format_from_width(pf));
215 fmtcheck(const char *f1, const char *f2)
217 const char *f1p, *f2p;
223 f1t = FMTCHECK_START;
225 f2t = FMTCHECK_START;
226 while ((f1t = get_next_format(&f1p, f1t)) != FMTCHECK_DONE) {
227 if (f1t == FMTCHECK_UNKNOWN)
229 f2t = get_next_format(&f2p, f2t);