| Current Path : /usr/src/lib/libc/stdio/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
| Current File : //usr/src/lib/libc/stdio/printf-pos.c |
/*-
* Copyright (c) 1990, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Chris Torek.
*
* 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.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
*/
#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)vfprintf.c 8.1 (Berkeley) 6/4/93";
#endif /* LIBC_SCCS and not lint */
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: release/9.1.0/lib/libc/stdio/printf-pos.c 216121 2010-12-02 13:40:21Z gavin $");
/*
* This is the code responsible for handling positional arguments
* (%m$ and %m$.n$) for vfprintf() and vfwprintf().
*/
#include "namespace.h"
#include <sys/types.h>
#include <stdarg.h>
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <wchar.h>
#include "un-namespace.h"
#include "printflocal.h"
/*
* Type ids for argument type table.
*/
enum typeid {
T_UNUSED, TP_SHORT, T_INT, T_U_INT, TP_INT,
T_LONG, T_U_LONG, TP_LONG, T_LLONG, T_U_LLONG, TP_LLONG,
T_PTRDIFFT, TP_PTRDIFFT, T_SSIZET, T_SIZET, TP_SSIZET,
T_INTMAXT, T_UINTMAXT, TP_INTMAXT, TP_VOID, TP_CHAR, TP_SCHAR,
T_DOUBLE, T_LONG_DOUBLE, T_WINT, TP_WCHAR
};
/* An expandable array of types. */
struct typetable {
enum typeid *table; /* table of types */
enum typeid stattable[STATIC_ARG_TBL_SIZE];
int tablesize; /* current size of type table */
int tablemax; /* largest used index in table */
int nextarg; /* 1-based argument index */
};
static int __grow_type_table(struct typetable *);
static void build_arg_table (struct typetable *, va_list, union arg **);
/*
* Initialize a struct typetable.
*/
static inline void
inittypes(struct typetable *types)
{
int n;
types->table = types->stattable;
types->tablesize = STATIC_ARG_TBL_SIZE;
types->tablemax = 0;
types->nextarg = 1;
for (n = 0; n < STATIC_ARG_TBL_SIZE; n++)
types->table[n] = T_UNUSED;
}
/*
* struct typetable destructor.
*/
static inline void
freetypes(struct typetable *types)
{
if (types->table != types->stattable)
free (types->table);
}
/*
* Ensure that there is space to add a new argument type to the type table.
* Expand the table if necessary. Returns 0 on success.
*/
static inline int
_ensurespace(struct typetable *types)
{
if (types->nextarg >= types->tablesize) {
if (__grow_type_table(types))
return (-1);
}
if (types->nextarg > types->tablemax)
types->tablemax = types->nextarg;
return (0);
}
/*
* Add an argument type to the table, expanding if necessary.
* Returns 0 on success.
*/
static inline int
addtype(struct typetable *types, enum typeid type)
{
if (_ensurespace(types))
return (-1);
types->table[types->nextarg++] = type;
return (0);
}
static inline int
addsarg(struct typetable *types, int flags)
{
if (_ensurespace(types))
return (-1);
if (flags & INTMAXT)
types->table[types->nextarg++] = T_INTMAXT;
else if (flags & SIZET)
types->table[types->nextarg++] = T_SSIZET;
else if (flags & PTRDIFFT)
types->table[types->nextarg++] = T_PTRDIFFT;
else if (flags & LLONGINT)
types->table[types->nextarg++] = T_LLONG;
else if (flags & LONGINT)
types->table[types->nextarg++] = T_LONG;
else
types->table[types->nextarg++] = T_INT;
return (0);
}
static inline int
adduarg(struct typetable *types, int flags)
{
if (_ensurespace(types))
return (-1);
if (flags & INTMAXT)
types->table[types->nextarg++] = T_UINTMAXT;
else if (flags & SIZET)
types->table[types->nextarg++] = T_SIZET;
else if (flags & PTRDIFFT)
types->table[types->nextarg++] = T_SIZET;
else if (flags & LLONGINT)
types->table[types->nextarg++] = T_U_LLONG;
else if (flags & LONGINT)
types->table[types->nextarg++] = T_U_LONG;
else
types->table[types->nextarg++] = T_U_INT;
return (0);
}
/*
* Add * arguments to the type array.
*/
static inline int
addaster(struct typetable *types, char **fmtp)
{
char *cp;
int n2;
n2 = 0;
cp = *fmtp;
while (is_digit(*cp)) {
n2 = 10 * n2 + to_digit(*cp);
cp++;
}
if (*cp == '$') {
int hold = types->nextarg;
types->nextarg = n2;
if (addtype(types, T_INT))
return (-1);
types->nextarg = hold;
*fmtp = ++cp;
} else {
if (addtype(types, T_INT))
return (-1);
}
return (0);
}
static inline int
addwaster(struct typetable *types, wchar_t **fmtp)
{
wchar_t *cp;
int n2;
n2 = 0;
cp = *fmtp;
while (is_digit(*cp)) {
n2 = 10 * n2 + to_digit(*cp);
cp++;
}
if (*cp == '$') {
int hold = types->nextarg;
types->nextarg = n2;
if (addtype(types, T_INT))
return (-1);
types->nextarg = hold;
*fmtp = ++cp;
} else {
if (addtype(types, T_INT))
return (-1);
}
return (0);
}
/*
* Find all arguments when a positional parameter is encountered. Returns a
* table, indexed by argument number, of pointers to each arguments. The
* initial argument table should be an array of STATIC_ARG_TBL_SIZE entries.
* It will be replaces with a malloc-ed one if it overflows.
* Returns 0 on success. On failure, returns nonzero and sets errno.
*/
int
__find_arguments (const char *fmt0, va_list ap, union arg **argtable)
{
char *fmt; /* format string */
int ch; /* character from fmt */
int n; /* handy integer (short term usage) */
int error;
int flags; /* flags as above */
struct typetable types; /* table of types */
fmt = (char *)fmt0;
inittypes(&types);
error = 0;
/*
* Scan the format for conversions (`%' character).
*/
for (;;) {
while ((ch = *fmt) != '\0' && ch != '%')
fmt++;
if (ch == '\0')
goto done;
fmt++; /* skip over '%' */
flags = 0;
rflag: ch = *fmt++;
reswitch: switch (ch) {
case ' ':
case '#':
goto rflag;
case '*':
if ((error = addaster(&types, &fmt)))
goto error;
goto rflag;
case '-':
case '+':
case '\'':
goto rflag;
case '.':
if ((ch = *fmt++) == '*') {
if ((error = addaster(&types, &fmt)))
goto error;
goto rflag;
}
while (is_digit(ch)) {
ch = *fmt++;
}
goto reswitch;
case '0':
goto rflag;
case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
n = 0;
do {
n = 10 * n + to_digit(ch);
ch = *fmt++;
} while (is_digit(ch));
if (ch == '$') {
types.nextarg = n;
goto rflag;
}
goto reswitch;
#ifndef NO_FLOATING_POINT
case 'L':
flags |= LONGDBL;
goto rflag;
#endif
case 'h':
if (flags & SHORTINT) {
flags &= ~SHORTINT;
flags |= CHARINT;
} else
flags |= SHORTINT;
goto rflag;
case 'j':
flags |= INTMAXT;
goto rflag;
case 'l':
if (flags & LONGINT) {
flags &= ~LONGINT;
flags |= LLONGINT;
} else
flags |= LONGINT;
goto rflag;
case 'q':
flags |= LLONGINT; /* not necessarily */
goto rflag;
case 't':
flags |= PTRDIFFT;
goto rflag;
case 'z':
flags |= SIZET;
goto rflag;
case 'C':
flags |= LONGINT;
/*FALLTHROUGH*/
case 'c':
error = addtype(&types,
(flags & LONGINT) ? T_WINT : T_INT);
if (error)
goto error;
break;
case 'D':
flags |= LONGINT;
/*FALLTHROUGH*/
case 'd':
case 'i':
if ((error = addsarg(&types, flags)))
goto error;
break;
#ifndef NO_FLOATING_POINT
case 'a':
case 'A':
case 'e':
case 'E':
case 'f':
case 'g':
case 'G':
error = addtype(&types,
(flags & LONGDBL) ? T_LONG_DOUBLE : T_DOUBLE);
if (error)
goto error;
break;
#endif /* !NO_FLOATING_POINT */
case 'n':
if (flags & INTMAXT)
error = addtype(&types, TP_INTMAXT);
else if (flags & PTRDIFFT)
error = addtype(&types, TP_PTRDIFFT);
else if (flags & SIZET)
error = addtype(&types, TP_SSIZET);
else if (flags & LLONGINT)
error = addtype(&types, TP_LLONG);
else if (flags & LONGINT)
error = addtype(&types, TP_LONG);
else if (flags & SHORTINT)
error = addtype(&types, TP_SHORT);
else if (flags & CHARINT)
error = addtype(&types, TP_SCHAR);
else
error = addtype(&types, TP_INT);
if (error)
goto error;
continue; /* no output */
case 'O':
flags |= LONGINT;
/*FALLTHROUGH*/
case 'o':
if ((error = adduarg(&types, flags)))
goto error;
break;
case 'p':
if ((error = addtype(&types, TP_VOID)))
goto error;
break;
case 'S':
flags |= LONGINT;
/*FALLTHROUGH*/
case 's':
error = addtype(&types,
(flags & LONGINT) ? TP_WCHAR : TP_CHAR);
if (error)
goto error;
break;
case 'U':
flags |= LONGINT;
/*FALLTHROUGH*/
case 'u':
case 'X':
case 'x':
if ((error = adduarg(&types, flags)))
goto error;
break;
default: /* "%?" prints ?, unless ? is NUL */
if (ch == '\0')
goto done;
break;
}
}
done:
build_arg_table(&types, ap, argtable);
error:
freetypes(&types);
return (error || *argtable == NULL);
}
/* wchar version of __find_arguments. */
int
__find_warguments (const wchar_t *fmt0, va_list ap, union arg **argtable)
{
wchar_t *fmt; /* format string */
wchar_t ch; /* character from fmt */
int n; /* handy integer (short term usage) */
int error;
int flags; /* flags as above */
struct typetable types; /* table of types */
fmt = (wchar_t *)fmt0;
inittypes(&types);
error = 0;
/*
* Scan the format for conversions (`%' character).
*/
for (;;) {
while ((ch = *fmt) != '\0' && ch != '%')
fmt++;
if (ch == '\0')
goto done;
fmt++; /* skip over '%' */
flags = 0;
rflag: ch = *fmt++;
reswitch: switch (ch) {
case ' ':
case '#':
goto rflag;
case '*':
if ((error = addwaster(&types, &fmt)))
goto error;
goto rflag;
case '-':
case '+':
case '\'':
goto rflag;
case '.':
if ((ch = *fmt++) == '*') {
if ((error = addwaster(&types, &fmt)))
goto error;
goto rflag;
}
while (is_digit(ch)) {
ch = *fmt++;
}
goto reswitch;
case '0':
goto rflag;
case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
n = 0;
do {
n = 10 * n + to_digit(ch);
ch = *fmt++;
} while (is_digit(ch));
if (ch == '$') {
types.nextarg = n;
goto rflag;
}
goto reswitch;
#ifndef NO_FLOATING_POINT
case 'L':
flags |= LONGDBL;
goto rflag;
#endif
case 'h':
if (flags & SHORTINT) {
flags &= ~SHORTINT;
flags |= CHARINT;
} else
flags |= SHORTINT;
goto rflag;
case 'j':
flags |= INTMAXT;
goto rflag;
case 'l':
if (flags & LONGINT) {
flags &= ~LONGINT;
flags |= LLONGINT;
} else
flags |= LONGINT;
goto rflag;
case 'q':
flags |= LLONGINT; /* not necessarily */
goto rflag;
case 't':
flags |= PTRDIFFT;
goto rflag;
case 'z':
flags |= SIZET;
goto rflag;
case 'C':
flags |= LONGINT;
/*FALLTHROUGH*/
case 'c':
error = addtype(&types,
(flags & LONGINT) ? T_WINT : T_INT);
if (error)
goto error;
break;
case 'D':
flags |= LONGINT;
/*FALLTHROUGH*/
case 'd':
case 'i':
if ((error = addsarg(&types, flags)))
goto error;
break;
#ifndef NO_FLOATING_POINT
case 'a':
case 'A':
case 'e':
case 'E':
case 'f':
case 'g':
case 'G':
error = addtype(&types,
(flags & LONGDBL) ? T_LONG_DOUBLE : T_DOUBLE);
if (error)
goto error;
break;
#endif /* !NO_FLOATING_POINT */
case 'n':
if (flags & INTMAXT)
error = addtype(&types, TP_INTMAXT);
else if (flags & PTRDIFFT)
error = addtype(&types, TP_PTRDIFFT);
else if (flags & SIZET)
error = addtype(&types, TP_SSIZET);
else if (flags & LLONGINT)
error = addtype(&types, TP_LLONG);
else if (flags & LONGINT)
error = addtype(&types, TP_LONG);
else if (flags & SHORTINT)
error = addtype(&types, TP_SHORT);
else if (flags & CHARINT)
error = addtype(&types, TP_SCHAR);
else
error = addtype(&types, TP_INT);
if (error)
goto error;
continue; /* no output */
case 'O':
flags |= LONGINT;
/*FALLTHROUGH*/
case 'o':
if ((error = adduarg(&types, flags)))
goto error;
break;
case 'p':
if ((error = addtype(&types, TP_VOID)))
goto error;
break;
case 'S':
flags |= LONGINT;
/*FALLTHROUGH*/
case 's':
error = addtype(&types,
(flags & LONGINT) ? TP_WCHAR : TP_CHAR);
if (error)
goto error;
break;
case 'U':
flags |= LONGINT;
/*FALLTHROUGH*/
case 'u':
case 'X':
case 'x':
if ((error = adduarg(&types, flags)))
goto error;
break;
default: /* "%?" prints ?, unless ? is NUL */
if (ch == '\0')
goto done;
break;
}
}
done:
build_arg_table(&types, ap, argtable);
error:
freetypes(&types);
return (error || *argtable == NULL);
}
/*
* Increase the size of the type table. Returns 0 on success.
*/
static int
__grow_type_table(struct typetable *types)
{
enum typeid *const oldtable = types->table;
const int oldsize = types->tablesize;
enum typeid *newtable;
int n, newsize = oldsize * 2;
if (newsize < types->nextarg + 1)
newsize = types->nextarg + 1;
if (oldsize == STATIC_ARG_TBL_SIZE) {
if ((newtable = malloc(newsize * sizeof(enum typeid))) == NULL)
return (-1);
bcopy(oldtable, newtable, oldsize * sizeof(enum typeid));
} else {
newtable = realloc(oldtable, newsize * sizeof(enum typeid));
if (newtable == NULL)
return (-1);
}
for (n = oldsize; n < newsize; n++)
newtable[n] = T_UNUSED;
types->table = newtable;
types->tablesize = newsize;
return (0);
}
/*
* Build the argument table from the completed type table.
* On malloc failure, *argtable is set to NULL.
*/
static void
build_arg_table(struct typetable *types, va_list ap, union arg **argtable)
{
int n;
if (types->tablemax >= STATIC_ARG_TBL_SIZE) {
*argtable = (union arg *)
malloc (sizeof (union arg) * (types->tablemax + 1));
if (*argtable == NULL)
return;
}
(*argtable) [0].intarg = 0;
for (n = 1; n <= types->tablemax; n++) {
switch (types->table[n]) {
case T_UNUSED: /* whoops! */
(*argtable) [n].intarg = va_arg (ap, int);
break;
case TP_SCHAR:
(*argtable) [n].pschararg = va_arg (ap, signed char *);
break;
case TP_SHORT:
(*argtable) [n].pshortarg = va_arg (ap, short *);
break;
case T_INT:
(*argtable) [n].intarg = va_arg (ap, int);
break;
case T_U_INT:
(*argtable) [n].uintarg = va_arg (ap, unsigned int);
break;
case TP_INT:
(*argtable) [n].pintarg = va_arg (ap, int *);
break;
case T_LONG:
(*argtable) [n].longarg = va_arg (ap, long);
break;
case T_U_LONG:
(*argtable) [n].ulongarg = va_arg (ap, unsigned long);
break;
case TP_LONG:
(*argtable) [n].plongarg = va_arg (ap, long *);
break;
case T_LLONG:
(*argtable) [n].longlongarg = va_arg (ap, long long);
break;
case T_U_LLONG:
(*argtable) [n].ulonglongarg = va_arg (ap, unsigned long long);
break;
case TP_LLONG:
(*argtable) [n].plonglongarg = va_arg (ap, long long *);
break;
case T_PTRDIFFT:
(*argtable) [n].ptrdiffarg = va_arg (ap, ptrdiff_t);
break;
case TP_PTRDIFFT:
(*argtable) [n].pptrdiffarg = va_arg (ap, ptrdiff_t *);
break;
case T_SIZET:
(*argtable) [n].sizearg = va_arg (ap, size_t);
break;
case T_SSIZET:
(*argtable) [n].sizearg = va_arg (ap, ssize_t);
break;
case TP_SSIZET:
(*argtable) [n].pssizearg = va_arg (ap, ssize_t *);
break;
case T_INTMAXT:
(*argtable) [n].intmaxarg = va_arg (ap, intmax_t);
break;
case T_UINTMAXT:
(*argtable) [n].uintmaxarg = va_arg (ap, uintmax_t);
break;
case TP_INTMAXT:
(*argtable) [n].pintmaxarg = va_arg (ap, intmax_t *);
break;
case T_DOUBLE:
#ifndef NO_FLOATING_POINT
(*argtable) [n].doublearg = va_arg (ap, double);
#endif
break;
case T_LONG_DOUBLE:
#ifndef NO_FLOATING_POINT
(*argtable) [n].longdoublearg = va_arg (ap, long double);
#endif
break;
case TP_CHAR:
(*argtable) [n].pchararg = va_arg (ap, char *);
break;
case TP_VOID:
(*argtable) [n].pvoidarg = va_arg (ap, void *);
break;
case T_WINT:
(*argtable) [n].wintarg = va_arg (ap, wint_t);
break;
case TP_WCHAR:
(*argtable) [n].pwchararg = va_arg (ap, wchar_t *);
break;
}
}
}