327 lines
6.9 KiB
C
327 lines
6.9 KiB
C
/* $NetBSD: fmtcheck.c,v 1.8 2008/04/28 20:22:59 martin Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 2000 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code was contributed to The NetBSD Foundation by Allen Briggs.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
|
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
|
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
|
|
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <ctype.h>
|
|
|
|
__weak_reference(__fmtcheck, fmtcheck);
|
|
const char * __fmtcheck(const char *, const char *);
|
|
|
|
enum __e_fmtcheck_types {
|
|
FMTCHECK_START,
|
|
FMTCHECK_SHORT,
|
|
FMTCHECK_INT,
|
|
FMTCHECK_WINTT,
|
|
FMTCHECK_LONG,
|
|
FMTCHECK_QUAD,
|
|
FMTCHECK_INTMAXT,
|
|
FMTCHECK_PTRDIFFT,
|
|
FMTCHECK_SIZET,
|
|
FMTCHECK_CHARPOINTER,
|
|
FMTCHECK_SHORTPOINTER,
|
|
FMTCHECK_INTPOINTER,
|
|
FMTCHECK_LONGPOINTER,
|
|
FMTCHECK_QUADPOINTER,
|
|
FMTCHECK_INTMAXTPOINTER,
|
|
FMTCHECK_PTRDIFFTPOINTER,
|
|
FMTCHECK_SIZETPOINTER,
|
|
#ifndef NO_FLOATING_POINT
|
|
FMTCHECK_DOUBLE,
|
|
FMTCHECK_LONGDOUBLE,
|
|
#endif
|
|
FMTCHECK_STRING,
|
|
FMTCHECK_WSTRING,
|
|
FMTCHECK_WIDTH,
|
|
FMTCHECK_PRECISION,
|
|
FMTCHECK_DONE,
|
|
FMTCHECK_UNKNOWN
|
|
};
|
|
typedef enum __e_fmtcheck_types EFT;
|
|
|
|
enum e_modifier {
|
|
MOD_NONE,
|
|
MOD_CHAR,
|
|
MOD_SHORT,
|
|
MOD_LONG,
|
|
MOD_QUAD,
|
|
MOD_INTMAXT,
|
|
MOD_LONGDOUBLE,
|
|
MOD_PTRDIFFT,
|
|
MOD_SIZET,
|
|
};
|
|
|
|
#define RETURN(pf,f,r) do { \
|
|
*(pf) = (f); \
|
|
return r; \
|
|
} /*NOTREACHED*/ /*CONSTCOND*/ while (0)
|
|
|
|
static EFT
|
|
get_next_format_from_precision(const char **pf)
|
|
{
|
|
enum e_modifier modifier;
|
|
const char *f;
|
|
|
|
f = *pf;
|
|
switch (*f) {
|
|
case 'h':
|
|
f++;
|
|
if (!*f) RETURN(pf,f,FMTCHECK_UNKNOWN);
|
|
if (*f == 'h') {
|
|
f++;
|
|
modifier = MOD_CHAR;
|
|
} else {
|
|
modifier = MOD_SHORT;
|
|
}
|
|
break;
|
|
case 'j':
|
|
f++;
|
|
modifier = MOD_INTMAXT;
|
|
break;
|
|
case 'l':
|
|
f++;
|
|
if (!*f) RETURN(pf,f,FMTCHECK_UNKNOWN);
|
|
if (*f == 'l') {
|
|
f++;
|
|
modifier = MOD_QUAD;
|
|
} else {
|
|
modifier = MOD_LONG;
|
|
}
|
|
break;
|
|
case 'q':
|
|
f++;
|
|
modifier = MOD_QUAD;
|
|
break;
|
|
case 't':
|
|
f++;
|
|
modifier = MOD_PTRDIFFT;
|
|
break;
|
|
case 'z':
|
|
f++;
|
|
modifier = MOD_SIZET;
|
|
break;
|
|
case 'L':
|
|
f++;
|
|
modifier = MOD_LONGDOUBLE;
|
|
break;
|
|
default:
|
|
modifier = MOD_NONE;
|
|
break;
|
|
}
|
|
if (!*f) RETURN(pf,f,FMTCHECK_UNKNOWN);
|
|
if (strchr("diouxX", *f)) {
|
|
switch (modifier) {
|
|
case MOD_LONG:
|
|
RETURN(pf,f,FMTCHECK_LONG);
|
|
case MOD_QUAD:
|
|
RETURN(pf,f,FMTCHECK_QUAD);
|
|
case MOD_INTMAXT:
|
|
RETURN(pf,f,FMTCHECK_INTMAXT);
|
|
case MOD_PTRDIFFT:
|
|
RETURN(pf,f,FMTCHECK_PTRDIFFT);
|
|
case MOD_SIZET:
|
|
RETURN(pf,f,FMTCHECK_SIZET);
|
|
case MOD_CHAR:
|
|
case MOD_SHORT:
|
|
case MOD_NONE:
|
|
RETURN(pf,f,FMTCHECK_INT);
|
|
default:
|
|
RETURN(pf,f,FMTCHECK_UNKNOWN);
|
|
}
|
|
}
|
|
if (*f == 'n') {
|
|
switch (modifier) {
|
|
case MOD_CHAR:
|
|
RETURN(pf,f,FMTCHECK_CHARPOINTER);
|
|
case MOD_SHORT:
|
|
RETURN(pf,f,FMTCHECK_SHORTPOINTER);
|
|
case MOD_LONG:
|
|
RETURN(pf,f,FMTCHECK_LONGPOINTER);
|
|
case MOD_QUAD:
|
|
RETURN(pf,f,FMTCHECK_QUADPOINTER);
|
|
case MOD_INTMAXT:
|
|
RETURN(pf,f,FMTCHECK_INTMAXTPOINTER);
|
|
case MOD_PTRDIFFT:
|
|
RETURN(pf,f,FMTCHECK_PTRDIFFTPOINTER);
|
|
case MOD_SIZET:
|
|
RETURN(pf,f,FMTCHECK_SIZETPOINTER);
|
|
case MOD_NONE:
|
|
RETURN(pf,f,FMTCHECK_INTPOINTER);
|
|
default:
|
|
RETURN(pf,f,FMTCHECK_UNKNOWN);
|
|
}
|
|
}
|
|
if (strchr("DOU", *f)) {
|
|
if (modifier != MOD_NONE)
|
|
RETURN(pf,f,FMTCHECK_UNKNOWN);
|
|
RETURN(pf,f,FMTCHECK_LONG);
|
|
}
|
|
#ifndef NO_FLOATING_POINT
|
|
if (strchr("aAeEfFgG", *f)) {
|
|
switch (modifier) {
|
|
case MOD_LONGDOUBLE:
|
|
RETURN(pf,f,FMTCHECK_LONGDOUBLE);
|
|
case MOD_LONG:
|
|
case MOD_NONE:
|
|
RETURN(pf,f,FMTCHECK_DOUBLE);
|
|
default:
|
|
RETURN(pf,f,FMTCHECK_UNKNOWN);
|
|
}
|
|
}
|
|
#endif
|
|
if (*f == 'c') {
|
|
switch (modifier) {
|
|
case MOD_LONG:
|
|
RETURN(pf,f,FMTCHECK_WINTT);
|
|
case MOD_NONE:
|
|
RETURN(pf,f,FMTCHECK_INT);
|
|
default:
|
|
RETURN(pf,f,FMTCHECK_UNKNOWN);
|
|
}
|
|
}
|
|
if (*f == 'C') {
|
|
if (modifier != MOD_NONE)
|
|
RETURN(pf,f,FMTCHECK_UNKNOWN);
|
|
RETURN(pf,f,FMTCHECK_WINTT);
|
|
}
|
|
if (*f == 's') {
|
|
switch (modifier) {
|
|
case MOD_LONG:
|
|
RETURN(pf,f,FMTCHECK_WSTRING);
|
|
case MOD_NONE:
|
|
RETURN(pf,f,FMTCHECK_STRING);
|
|
default:
|
|
RETURN(pf,f,FMTCHECK_UNKNOWN);
|
|
}
|
|
}
|
|
if (*f == 'S') {
|
|
if (modifier != MOD_NONE)
|
|
RETURN(pf,f,FMTCHECK_UNKNOWN);
|
|
RETURN(pf,f,FMTCHECK_WSTRING);
|
|
}
|
|
if (*f == 'p') {
|
|
if (modifier != MOD_NONE)
|
|
RETURN(pf,f,FMTCHECK_UNKNOWN);
|
|
RETURN(pf,f,FMTCHECK_LONG);
|
|
}
|
|
RETURN(pf,f,FMTCHECK_UNKNOWN);
|
|
/*NOTREACHED*/
|
|
}
|
|
|
|
static EFT
|
|
get_next_format_from_width(const char **pf)
|
|
{
|
|
const char *f;
|
|
|
|
f = *pf;
|
|
if (*f == '.') {
|
|
f++;
|
|
if (*f == '*') {
|
|
RETURN(pf,f,FMTCHECK_PRECISION);
|
|
}
|
|
/* eat any precision (empty is allowed) */
|
|
while (isdigit(*f)) f++;
|
|
if (!*f) RETURN(pf,f,FMTCHECK_UNKNOWN);
|
|
}
|
|
RETURN(pf,f,get_next_format_from_precision(pf));
|
|
/*NOTREACHED*/
|
|
}
|
|
|
|
static EFT
|
|
get_next_format(const char **pf, EFT eft)
|
|
{
|
|
int infmt;
|
|
const char *f;
|
|
|
|
if (eft == FMTCHECK_WIDTH) {
|
|
(*pf)++;
|
|
return get_next_format_from_width(pf);
|
|
} else if (eft == FMTCHECK_PRECISION) {
|
|
(*pf)++;
|
|
return get_next_format_from_precision(pf);
|
|
}
|
|
|
|
f = *pf;
|
|
infmt = 0;
|
|
while (!infmt) {
|
|
f = strchr(f, '%');
|
|
if (f == NULL)
|
|
RETURN(pf,f,FMTCHECK_DONE);
|
|
f++;
|
|
if (!*f)
|
|
RETURN(pf,f,FMTCHECK_UNKNOWN);
|
|
if (*f != '%')
|
|
infmt = 1;
|
|
else
|
|
f++;
|
|
}
|
|
|
|
/* Eat any of the flags */
|
|
while (*f && (strchr("#'0- +", *f)))
|
|
f++;
|
|
|
|
if (*f == '*') {
|
|
RETURN(pf,f,FMTCHECK_WIDTH);
|
|
}
|
|
/* eat any width */
|
|
while (isdigit(*f)) f++;
|
|
if (!*f) {
|
|
RETURN(pf,f,FMTCHECK_UNKNOWN);
|
|
}
|
|
|
|
RETURN(pf,f,get_next_format_from_width(pf));
|
|
/*NOTREACHED*/
|
|
}
|
|
|
|
const char *
|
|
__fmtcheck(const char *f1, const char *f2)
|
|
{
|
|
const char *f1p, *f2p;
|
|
EFT f1t, f2t;
|
|
|
|
if (!f1) return f2;
|
|
|
|
f1p = f1;
|
|
f1t = FMTCHECK_START;
|
|
f2p = f2;
|
|
f2t = FMTCHECK_START;
|
|
while ((f1t = get_next_format(&f1p, f1t)) != FMTCHECK_DONE) {
|
|
if (f1t == FMTCHECK_UNKNOWN)
|
|
return f2;
|
|
f2t = get_next_format(&f2p, f2t);
|
|
if (f1t != f2t)
|
|
return f2;
|
|
}
|
|
return f1;
|
|
}
|