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 (*f == '3' && f[1] == '2') {
100 } else if (*f == '6' && f[1] == '4') {
114 if (!*f) RETURN(pf,f,FMTCHECK_UNKNOWN);
115 if (strchr("diouxX", *f)) {
117 RETURN(pf,f,FMTCHECK_UNKNOWN);
119 RETURN(pf,f,FMTCHECK_LONG);
121 RETURN(pf,f,FMTCHECK_QUAD);
122 RETURN(pf,f,FMTCHECK_INT);
126 RETURN(pf,f,FMTCHECK_UNKNOWN);
128 RETURN(pf,f,FMTCHECK_SHORTPOINTER);
130 RETURN(pf,f,FMTCHECK_LONGPOINTER);
132 RETURN(pf,f,FMTCHECK_QUADPOINTER);
133 RETURN(pf,f,FMTCHECK_INTPOINTER);
135 if (strchr("DOU", *f)) {
136 if (sh + lg + quad + longdouble)
137 RETURN(pf,f,FMTCHECK_UNKNOWN);
138 RETURN(pf,f,FMTCHECK_LONG);
140 if (strchr("eEfg", *f)) {
142 RETURN(pf,f,FMTCHECK_LONGDOUBLE);
144 RETURN(pf,f,FMTCHECK_UNKNOWN);
145 RETURN(pf,f,FMTCHECK_DOUBLE);
148 if (sh + lg + quad + longdouble)
149 RETURN(pf,f,FMTCHECK_UNKNOWN);
150 RETURN(pf,f,FMTCHECK_INT);
153 if (sh + lg + quad + longdouble)
154 RETURN(pf,f,FMTCHECK_UNKNOWN);
155 RETURN(pf,f,FMTCHECK_STRING);
158 if (sh + lg + quad + longdouble)
159 RETURN(pf,f,FMTCHECK_UNKNOWN);
160 RETURN(pf,f,FMTCHECK_LONG);
162 RETURN(pf,f,FMTCHECK_UNKNOWN);
167 get_next_format_from_width(const char **pf)
175 RETURN(pf,f,FMTCHECK_PRECISION);
177 /* eat any precision (empty is allowed) */
178 while (isdigit((unsigned char)*f)) f++;
179 if (!*f) RETURN(pf,f,FMTCHECK_UNKNOWN);
181 RETURN(pf,f,get_next_format_from_precision(pf));
186 get_next_format(const char **pf, EFT eft)
191 if (eft == FMTCHECK_WIDTH) {
193 return get_next_format_from_width(pf);
194 } else if (eft == FMTCHECK_PRECISION) {
196 return get_next_format_from_precision(pf);
204 RETURN(pf,f,FMTCHECK_DONE);
207 RETURN(pf,f,FMTCHECK_UNKNOWN);
214 /* Eat any of the flags */
215 while (*f && (strchr("#0- +", *f)))
219 RETURN(pf,f,FMTCHECK_WIDTH);
222 while (isdigit((unsigned char)*f)) f++;
224 RETURN(pf,f,FMTCHECK_UNKNOWN);
227 RETURN(pf,f,get_next_format_from_width(pf));
232 fmtcheck(const char *f1, const char *f2)
234 const char *f1p, *f2p;
240 f1t = FMTCHECK_START;
242 f2t = FMTCHECK_START;
243 while ((f1t = get_next_format(&f1p, f1t)) != FMTCHECK_DONE) {
244 if (f1t == FMTCHECK_UNKNOWN)
246 f2t = get_next_format(&f2p, f2t);