glibc/stdio-common/vfscanf.c
Ulrich Drepper 8d57beeab1 update from main archive 970121
Thu Jan 23 04:06:42 1997  Ulrich Drepper  <drepper@cygnus.com>

	* Make-dist (.PHONY: dist): Remove duplicate declaration.
	(README): Depend on version.h not version.c.
	* Makefile (README): Depend on version.h not version.c.

	* Makeconfig (inst_libdir, inst_slibdir, inst_includedir,
	inst_datadir, inst_zonedir, inst_localedir, inst_i18ndir, inst_bindir,
	inst_sbindir, inst_infodir, inst_sysconfdir): New variables.  Same
	as variable withough inst_ but prepended with $(install_root).
	(localtime-time): Use $(inst_sysconfdir) not $(sysconfdir).
	* Makefile (install-others): Use $(inst_includedir).
	(gnu/stabs.h, gnu/lib-names.h): Use $(inst_includedir).
	* Makerules (tons of install rules): Use inst_% variables.
	* elf/Makefile: Likewise.
	* hurd/Makefile: Likewise.
	* intl/Makefile: Likewise.
	* manual/Makefile: Likewise.
	* po/Makefile: Likewise.
	* sunrpc/Makefile: Likewise.
	* sysdeps/mach/hurd/Makefile: Likewise.
	* sysdeps/standalone/i386/force_cpu386/Makefile: Likewise.
	* time/Makefile: Likewise.

	* config.make.in: Revert patch from Sat Jan 18 22:15:26 1997,
	leave install_root in place.

	* gnu-versions.h (_GNU_GETOPT_INTERFACE_VERSION): Define to 2.
	* posix/getopt.c (GETOPT_INTERFACE_VERSION): Define to 2.
	* posix/getopt1.c (GETOPT_INTERFACE_VERSION): Define to 2.

	* elf/Makefile [yes==$(has-ldconfig)]: Correct dependencies of
	ldconfig.
	(CFLAGS-dl-load.c): New variable, avoid gcc warning.

	* sysdeps/mach/hurd/configure.in: Add _LIBC_REENTRENT to DEFINES.

	* sysdeps/mach/hurd/getdents.c: Update copyright.  De-ANSI-declfy.
	* sysdeps/stub/getdents.c: Likewise.  Correct return value.
	* sysdeps/unix/getdents.c: Likewise.
	* sysdeps/unix/sysv/getdents.c: Likewise.

	* sysdeps/unix/readdir.c: Update copyright.

	* sysdeps/unix/bsd/sony/newsos4/Makefile: Correct ifeq arguments.
	* sysdeps/unix/bsd/sun/sunos4/Makefile: Likewise.
	* sysdeps/unix/sysv/Makefile: Likewise.
	* sysdeps/unix/sysv/linux/Makefile: Likewise.
	* sysdeps/unix/sysv/linux/alpha/Makefile: Likewise.
	* sysdeps/unix/sysv/linux/i386/Makefile: Likewise.

	* sysdeps/unix/sysv/linux/Dist: Don't distribute kernel_termios.h,
	but sys/kernel_termios.h.
	* sysdeps/unix/sysv/linux/alpha/Dist: Likewise.
	* sysdeps/unix/sysv/linux/Makefile [$(subdir)==termios]
	(sysdep_headers): Add sys/kernel_termios.h.
	* sysdeps/unix/sysv/linux/kernel_termios.h: Moved to...
	* sysdeps/unix/sysv/linux/sys/kernel_termios.h: ...here.
	* sysdeps/unix/sysv/linux/sys/tcgetattr.c: Use __kernel_termios and
	__KERNEL_NCCS instead of kernel_termios and KERNEL_NCCS resp.

	* sysdeps/unix/sysv/linux/alpha/ioctls.h: New file.

	* sysdeps/unix/sysv/linux/getdents.c: Correct problems with alignment.
	* sysdeps/unix/sysv/linux/alpha/syscalls.list: Remove getdents.
	Reported by Eirik Fuller <eirik@netcom.com>.

	* time/Banner: Removed.  Wrong and unnecessary information.  It's now
	in...
	* time/README: New file.
	* time/Makefile (distribute): Remove Banner, add README.

Wed Jan 22 13:19:56 1997  Richard Henderson  <rth@tamu.edu>

	* sysdeps/unix/sysv/linux/alpha/ioperm.c (platforms): Add Sable.
	(init_iosys): Recognize /etc/alpha_systype as a four-tuple for
	the purpose of supporting brand new systems.
	(*): The type of iosys variables should be iosys_t.

1997-01-22  Paul Eggert  <eggert@twinsun.com>

	* strftime.c (_strftime_copytm):
	New function, to work around Solaris 2.5 tzset bug.

Wed Jan 22 23:05:14 1997  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/mach/hurd/vdprintf.c: Complete de-ANSI-declfication.
	* sysdeps/posix/pipestream.c (writedecl): Fix typo.
	Reported by Marcus G. Daniels <marcus@shannon.sysc.pdx.edu>.

Wed Jan 22 13:58:56 1997  Andreas Jaeger  <aj@arthur.pfalz.de>

	* elf/Makefile (CFLAGS-dl-load.c): New Variable to keep gcc silent
	since name_copy is initialized.

Wed Jan 22 16:58:12 1997  Ulrich Drepper  <drepper@cygnus.com>

	* stdio-common/Makefile (tests): Remove scanf11.
	* stdio-common/scanf11.c: Removed.
	* stdio-common/vfscanf.c Revert patch of Thu Jan 16 23:39:25 1997.
	Although the Corrigendum 1 describes the result as implemented the
	even more recent Amendement 1 seconds the position of ISO C:1990
	where the %n directive has no effect on the assignment count.
	* stdio-common/bug10.c: Likewise.
	* stdio-common/scanf1.c: Likewise.
	* stdio-common/scanf3.c: Likewise.
	* stdio-common/scanf10.c: Likewise.
	* stdio-common/tstdiomisc.c: Likewise.

	* new-malloc/obstack.h: Don't define malloc using bcopy if malloc
	is not available.  This leads to problems since bcopy does not
	return a value.  Instead define _obstack_memcpy based on memcpy or
	bcopy.  This name isn't used outside obstack.h and so no problems
	from using the memcpy function in a file including obstack.h can
	result.
	Reported by Martin Trapp <trapp@ipd.info.uni-karlsruhe.de>.

Tue Jan 21 18:35:55 1997  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* misc/regexp.h (compile): Fix typos.

Tue Jan 21 01:01:59 1997  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* sysdeps/unix/sysv/linux/sys/procfs.h (struct elf_prpsinfo): Fix
	type of pr_{pid,ppid,pgrp,sid} fields.
	* sysdeps/unix/sysv/linux/alpha/sys/procfs.h (struct
	elf_prpsinfo): Likewise.
1997-01-23 04:24:20 +00:00

1132 lines
27 KiB
C

/* Copyright (C) 1991, 92, 93, 94, 95, 96, 97 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include "../locale/localeinfo.h"
#include <errno.h>
#include <limits.h>
#include <ctype.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <wctype.h>
#include <libc-lock.h>
#ifdef __GNUC__
#define HAVE_LONGLONG
#define LONGLONG long long
#else
#define LONGLONG long
#endif
/* Those are flags in the conversion format. */
# define LONG 0x001 /* l: long or double */
# define LONGDBL 0x002 /* L: long long or long double */
# define SHORT 0x004 /* h: short */
# define SUPPRESS 0x008 /* *: suppress assignment */
# define POINTER 0x010 /* weird %p pointer (`fake hex') */
# define NOSKIP 0x020 /* do not skip blanks */
# define WIDTH 0x040 /* width was given */
# define GROUP 0x080 /* ': group numbers */
# define MALLOC 0x100 /* a: malloc strings */
# define TYPEMOD (LONG|LONGDBL|SHORT)
#ifdef USE_IN_LIBIO
# include <libioP.h>
# include <libio.h>
# undef va_list
# define va_list _IO_va_list
# define ungetc(c, s) (--read_in, _IO_ungetc (c, s))
# define inchar() ((c = _IO_getc_unlocked (s)), (void) ++read_in, c)
# define encode_error() do { \
if (errp != NULL) *errp |= 4; \
_IO_funlockfile (s); \
__set_errno (EILSEQ); \
return done; \
} while (0)
# define conv_error() do { \
if (errp != NULL) *errp |= 2; \
_IO_funlockfile (s); \
return done; \
} while (0)
# define input_error() do { \
_IO_funlockfile (s); \
if (errp != NULL) *errp |= 1; \
return done ?: EOF; \
} while (0)
# define memory_error() do { \
_IO_funlockfile (s); \
__set_errno (ENOMEM); \
return EOF; \
} while (0)
# define ARGCHECK(s, format) \
do \
{ \
/* Check file argument for consistence. */ \
CHECK_FILE (s, EOF); \
if (s->_flags & _IO_NO_READS) \
{ \
__set_errno (EBADF); \
return EOF; \
} \
else if (format == NULL) \
{ \
MAYBE_SET_EINVAL; \
return EOF; \
} \
} while (0)
# define LOCK_STREAM(S) \
__libc_cleanup_region_start ((void (*) (void *)) &_IO_funlockfile, (S)); \
_IO_flockfile (S)
# define UNLOCK_STREAM __libc_cleanup_region_end (1)
#else
# define ungetc(c, s) (--read_in, ungetc (c, s))
# define inchar() ((c = getc (s)), (void) ++read_in, c)
# define encode_error() do { \
funlockfile (s); \
__set_errno (EILSEQ); \
return done; \
} while (0)
# define conv_error() do { \
funlockfile (s); \
return done; \
} while (0)
# define input_error() do { \
funlockfile (s); \
return done ?: EOF; \
} while (0)
# define memory_error() do { \
funlockfile (s); \
__set_errno (ENOMEM); \
return EOF; \
} while (0)
# define ARGCHECK(s, format) \
do \
{ \
/* Check file argument for consistence. */ \
if (!__validfp (s) || !s->__mode.__read) \
{ \
__set_errno (EBADF); \
return EOF; \
} \
else if (format == NULL) \
{ \
__set_errno (EINVAL); \
return EOF; \
} \
} while (0)
#if 1
/* XXX For now !!! */
# define flockfile(S) /* nothing */
# define funlockfile(S) /* nothing */
# define LOCK_STREAM(S)
# define UNLOCK_STREAM
#else
# define LOCK_STREAM(S) \
__libc_cleanup_region_start (&__funlockfile, (S)); \
__flockfile (S)
# define UNLOCK_STREAM __libc_cleanup_region_end (1)
#endif
#endif
/* Read formatted input from S according to the format string
FORMAT, using the argument list in ARG.
Return the number of assignments made, or -1 for an input error. */
#ifdef USE_IN_LIBIO
int
_IO_vfscanf (s, format, argptr, errp)
_IO_FILE *s;
const char *format;
_IO_va_list argptr;
int *errp;
#else
int
__vfscanf (FILE *s, const char *format, va_list argptr)
#endif
{
va_list arg = (va_list) argptr;
register const char *f = format;
register unsigned char fc; /* Current character of the format. */
register size_t done = 0; /* Assignments done. */
register size_t read_in = 0; /* Chars read in. */
register int c = 0; /* Last char read. */
register int width; /* Maximum field width. */
register int flags; /* Modifiers for current format element. */
/* Status for reading F-P nums. */
char got_dot, got_e, negative;
/* If a [...] is a [^...]. */
char not_in;
/* Base for integral numbers. */
int base;
/* Signedness for integral numbers. */
int number_signed;
/* Decimal point character. */
wchar_t decimal;
/* The thousands character of the current locale. */
wchar_t thousands;
/* Integral holding variables. */
union
{
long long int q;
unsigned long long int uq;
long int l;
unsigned long int ul;
} num;
/* Character-buffer pointer. */
char *str = NULL;
wchar_t *wstr = NULL;
char **strptr = NULL;
size_t strsize = 0;
/* We must not react on white spaces immediately because they can
possibly be matched even if in the input stream no character is
available anymore. */
int skip_space = 0;
/* Workspace. */
char *tw; /* Temporary pointer. */
char *wp = NULL; /* Workspace. */
size_t wpmax = 0; /* Maximal size of workspace. */
size_t wpsize; /* Currently used bytes in workspace. */
#define ADDW(Ch) \
do \
{ \
if (wpsize == wpmax) \
{ \
char *old = wp; \
wpmax = UCHAR_MAX > 2 * wpmax ? UCHAR_MAX : 2 * wpmax; \
wp = (char *) alloca (wpmax); \
if (old != NULL) \
memcpy (wp, old, wpsize); \
} \
wp[wpsize++] = (Ch); \
} \
while (0)
ARGCHECK (s, format);
/* Figure out the decimal point character. */
if (mbtowc (&decimal, _NL_CURRENT (LC_NUMERIC, DECIMAL_POINT),
strlen (_NL_CURRENT (LC_NUMERIC, DECIMAL_POINT))) <= 0)
decimal = (wchar_t) *_NL_CURRENT (LC_NUMERIC, DECIMAL_POINT);
/* Figure out the thousands separator character. */
if (mbtowc (&thousands, _NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP),
strlen (_NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP))) <= 0)
thousands = (wchar_t) *_NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP);
/* Lock the stream. */
LOCK_STREAM (s);
/* Run through the format string. */
while (*f != '\0')
{
unsigned int argpos;
/* Extract the next argument, which is of type TYPE.
For a %N$... spec, this is the Nth argument from the beginning;
otherwise it is the next argument after the state now in ARG. */
#if 0
/* XXX Possible optimization. */
# define ARG(type) (argpos == 0 ? va_arg (arg, type) : \
({ va_list arg = (va_list) argptr; \
arg = (va_list) ((char *) arg \
+ (argpos - 1) \
* __va_rounded_size (void *)); \
va_arg (arg, type); \
}))
#else
# define ARG(type) (argpos == 0 ? va_arg (arg, type) : \
({ unsigned int pos = argpos; \
va_list arg = (va_list) argptr; \
while (--pos > 0) \
(void) va_arg (arg, void *); \
va_arg (arg, type); \
}))
#endif
if (!isascii (*f))
{
/* Non-ASCII, may be a multibyte. */
int len = mblen (f, strlen (f));
if (len > 0)
{
do
{
c = inchar ();
if (c == EOF)
input_error ();
else if (c != *f++)
{
ungetc (c, s);
conv_error ();
}
}
while (--len > 0);
continue;
}
}
fc = *f++;
if (fc != '%')
{
/* Remember to skip spaces. */
if (isspace (fc))
{
skip_space = 1;
continue;
}
/* Read a character. */
c = inchar ();
/* Characters other than format specs must just match. */
if (c == EOF)
input_error ();
/* We saw white space char as the last character in the format
string. Now it's time to skip all leading white space. */
if (skip_space)
{
while (isspace (c))
if (inchar () == EOF && errno == EINTR)
conv_error ();
skip_space = 0;
}
if (c != fc)
{
ungetc (c, s);
conv_error ();
}
continue;
}
/* This is the start of the conversion string. */
flags = 0;
/* Initialize state of modifiers. */
argpos = 0;
/* Prepare temporary buffer. */
wpsize = 0;
/* Check for a positional parameter specification. */
if (isdigit (*f))
{
argpos = *f++ - '0';
while (isdigit (*f))
argpos = argpos * 10 + (*f++ - '0');
if (*f == '$')
++f;
else
{
/* Oops; that was actually the field width. */
width = argpos;
flags |= WIDTH;
argpos = 0;
goto got_width;
}
}
/* Check for the assignment-suppressing and the number grouping flag. */
while (*f == '*' || *f == '\'')
switch (*f++)
{
case '*':
flags |= SUPPRESS;
break;
case '\'':
flags |= GROUP;
break;
}
/* We have seen width. */
if (isdigit (*f))
flags |= WIDTH;
/* Find the maximum field width. */
width = 0;
while (isdigit (*f))
{
width *= 10;
width += *f++ - '0';
}
got_width:
if (width == 0)
width = -1;
/* Check for type modifiers. */
while (*f == 'h' || *f == 'l' || *f == 'L' || *f == 'a' || *f == 'q')
switch (*f++)
{
case 'h':
/* int's are short int's. */
if (flags & TYPEMOD)
/* Signal illegal format element. */
conv_error ();
flags |= SHORT;
break;
case 'l':
if (flags & (SHORT|LONGDBL))
conv_error ();
else if (flags & LONG)
{
/* A double `l' is equivalent to an `L'. */
flags &= ~LONG;
flags |= LONGDBL;
}
else
/* int's are long int's. */
flags |= LONG;
break;
case 'q':
case 'L':
/* double's are long double's, and int's are long long int's. */
if (flags & TYPEMOD)
/* Signal illegal format element. */
conv_error ();
flags |= LONGDBL;
break;
case 'a':
if (flags & TYPEMOD)
/* Signal illegal format element. */
conv_error ();
/* String conversions (%s, %[) take a `char **'
arg and fill it in with a malloc'd pointer. */
flags |= MALLOC;
break;
}
/* End of the format string? */
if (*f == '\0')
conv_error ();
/* We must take care for EINTR errors. */
if (c == EOF && errno == EINTR)
input_error ();
/* Find the conversion specifier. */
fc = *f++;
if (skip_space || (fc != '[' && fc != 'c' && fc != 'C' && fc != 'n'))
{
/* Eat whitespace. */
do
if (inchar () == EOF && errno == EINTR)
input_error ();
while (isspace (c));
ungetc (c, s);
skip_space = 0;
}
switch (fc)
{
case '%': /* Must match a literal '%'. */
c = inchar ();
if (c != fc)
{
ungetc (c, s);
conv_error ();
}
break;
case 'n': /* Answer number of assignments done. */
/* Corrigendum 1 to ISO C 1990 describes the allowed flags
with the 'n' conversion specifier. */
if (!(flags & SUPPRESS))
{
/* Don't count the read-ahead. */
if (flags & LONGDBL)
*ARG (long long int *) = read_in;
else if (flags & LONG)
*ARG (long int *) = read_in;
else if (flags & SHORT)
*ARG (short int *) = read_in;
else
*ARG (int *) = read_in;
#ifdef NO_BUG_IN_ISO_C_CORRIGENDUM_1
/* We have a severe problem here. The ISO C standard
contradicts itself in explaining the effect of the %n
format in `scanf'. While in ISO C:1990 and the ISO C
Amendement 1:1995 the result is described as
Execution of a %n directive does not effect the
assignment count returned at the completion of
execution of the f(w)scanf function.
in ISO C Corrigendum 1:1994 the following was added:
Subclause 7.9.6.2
Add the following fourth example:
In:
#include <stdio.h>
int d1, d2, n1, n2, i;
i = sscanf("123", "%d%n%n%d", &d1, &n1, &n2, &d2);
the value 123 is assigned to d1 and the value3 to n1.
Because %n can never get an input failure the value
of 3 is also assigned to n2. The value of d2 is not
affected. The value 3 is assigned to i.
We go for now with the historically correct code fro ISO C,
i.e., we don't count the %n assignments. When it ever
should proof to be wrong just remove the #ifdef above. */
++done;
#endif
}
break;
case 'c': /* Match characters. */
if ((flags & LONG) == 0)
{
if (!(flags & SUPPRESS))
{
str = ARG (char *);
if (str == NULL)
conv_error ();
}
c = inchar ();
if (c == EOF)
input_error ();
if (width == -1)
width = 1;
if (!(flags & SUPPRESS))
{
do
*str++ = c;
while (--width > 0 && inchar () != EOF);
}
else
while (--width > 0 && inchar () != EOF);
if (width > 0)
/* I.e., EOF was read. */
--read_in;
if (!(flags & SUPPRESS))
++done;
break;
}
/* FALLTHROUGH */
case 'C':
/* Get UTF-8 encoded wide character. Here we assume (as in
other parts of the libc) that we only have to handle
UTF-8. */
{
wint_t val;
size_t cnt = 0;
int first = 1;
if (!(flags & SUPPRESS))
{
wstr = ARG (wchar_t *);
if (str == NULL)
conv_error ();
}
do
{
#define NEXT_WIDE_CHAR(First) \
c = inchar (); \
if (c == EOF) \
/* EOF is only an error for the first character. */ \
if (First) \
input_error (); \
else \
{ \
--read_in; \
break; \
} \
val = c; \
if (val >= 0x80) \
{ \
if ((c & 0xc0) == 0x80 || (c & 0xfe) == 0xfe) \
encode_error (); \
if ((c & 0xe0) == 0xc0) \
{ \
/* We expect two bytes. */ \
cnt = 1; \
val &= 0x1f; \
} \
else if ((c & 0xf0) == 0xe0) \
{ \
/* We expect three bytes. */ \
cnt = 2; \
val &= 0x0f; \
} \
else if ((c & 0xf8) == 0xf0) \
{ \
/* We expect four bytes. */ \
cnt = 3; \
val &= 0x07; \
} \
else if ((c & 0xfc) == 0xf8) \
{ \
/* We expect five bytes. */ \
cnt = 4; \
val &= 0x03; \
} \
else \
{ \
/* We expect six bytes. */ \
cnt = 5; \
val &= 0x01; \
} \
\
do \
{ \
c = inchar (); \
if (c == EOF \
|| (c & 0xc0) == 0x80 || (c & 0xfe) == 0xfe) \
encode_error (); \
val <<= 6; \
val |= c & 0x3f; \
} \
while (--cnt > 0); \
} \
\
if (!(flags & SUPPRESS)) \
*wstr++ = val; \
first = 0
NEXT_WIDE_CHAR (first);
}
while (--width > 0);
if (width > 0)
/* I.e., EOF was read. */
--read_in;
if (!(flags & SUPPRESS))
++done;
}
break;
case 's': /* Read a string. */
if (flags & LONG)
/* We have to process a wide character string. */
goto wide_char_string;
#define STRING_ARG(Str, Type) \
if (!(flags & SUPPRESS)) \
{ \
if (flags & MALLOC) \
{ \
/* The string is to be stored in a malloc'd buffer. */ \
strptr = ARG (char **); \
if (strptr == NULL) \
conv_error (); \
/* Allocate an initial buffer. */ \
strsize = 100; \
*strptr = malloc (strsize * sizeof (Type)); \
Str = (Type *) *strptr; \
} \
else \
Str = ARG (Type *); \
if (Str == NULL) \
conv_error (); \
}
STRING_ARG (str, char);
c = inchar ();
if (c == EOF)
input_error ();
do
{
if (isspace (c))
{
ungetc (c, s);
break;
}
#define STRING_ADD_CHAR(Str, c, Type) \
if (!(flags & SUPPRESS)) \
{ \
*Str++ = c; \
if ((flags & MALLOC) && (char *) Str == *strptr + strsize) \
{ \
/* Enlarge the buffer. */ \
Str = realloc (*strptr, strsize * 2 * sizeof (Type)); \
if (Str == NULL) \
{ \
/* Can't allocate that much. Last-ditch effort. */\
Str = realloc (*strptr, \
(strsize + 1) * sizeof (Type)); \
if (Str == NULL) \
{ \
/* We lose. Oh well. \
Terminate the string and stop converting, \
so at least we don't skip any input. */ \
((Type *) (*strptr))[strsize] = '\0'; \
++done; \
conv_error (); \
} \
else \
{ \
*strptr = (char *) Str; \
Str = ((Type *) *strptr) + strsize; \
++strsize; \
} \
} \
else \
{ \
*strptr = (char *) Str; \
Str = ((Type *) *strptr) + strsize; \
strsize *= 2; \
} \
} \
}
STRING_ADD_CHAR (str, c, char);
} while ((width <= 0 || --width > 0) && inchar () != EOF);
if (c == EOF)
--read_in;
if (!(flags & SUPPRESS))
{
*str = '\0';
++done;
}
break;
case 'S':
/* Wide character string. */
wide_char_string:
{
wint_t val;
int first = 1;
STRING_ARG (wstr, wchar_t);
do
{
size_t cnt = 0;
NEXT_WIDE_CHAR (first);
if (iswspace (val))
{
/* XXX We would have to push back the whole wide char
with possibly many bytes. But since scanf does
not make a difference for white space characters
we can simply push back a simple <SP> which is
guaranteed to be in the [:space:] class. */
ungetc (' ', s);
break;
}
STRING_ADD_CHAR (wstr, val, wchar_t);
first = 0;
}
while (width <= 0 || --width > 0);
if (!(flags & SUPPRESS))
{
*wstr = L'\0';
++done;
}
}
break;
case 'x': /* Hexadecimal integer. */
case 'X': /* Ditto. */
base = 16;
number_signed = 0;
goto number;
case 'o': /* Octal integer. */
base = 8;
number_signed = 0;
goto number;
case 'u': /* Unsigned decimal integer. */
base = 10;
number_signed = 0;
goto number;
case 'd': /* Signed decimal integer. */
base = 10;
number_signed = 1;
goto number;
case 'i': /* Generic number. */
base = 0;
number_signed = 1;
number:
c = inchar ();
if (c == EOF)
input_error ();
/* Check for a sign. */
if (c == '-' || c == '+')
{
ADDW (c);
if (width > 0)
--width;
c = inchar ();
}
/* Look for a leading indication of base. */
if (width != 0 && c == '0')
{
if (width > 0)
--width;
ADDW (c);
c = inchar ();
if (width != 0 && tolower (c) == 'x')
{
if (base == 0)
base = 16;
if (base == 16)
{
if (width > 0)
--width;
c = inchar ();
}
}
else if (base == 0)
base = 8;
}
if (base == 0)
base = 10;
/* Read the number into workspace. */
while (c != EOF && width != 0)
{
if (base == 16 ? !isxdigit (c) :
((!isdigit (c) || c - '0' >= base) &&
!((flags & GROUP) && base == 10 && c == thousands)))
break;
ADDW (c);
if (width > 0)
--width;
c = inchar ();
}
/* The just read character is not part of the number anymore. */
ungetc (c, s);
if (wpsize == 0 ||
(wpsize == 1 && (wp[0] == '+' || wp[0] == '-')))
/* There was no number. */
conv_error ();
/* Convert the number. */
ADDW ('\0');
if (flags & LONGDBL)
{
if (number_signed)
num.q = __strtoq_internal (wp, &tw, base, flags & GROUP);
else
num.uq = __strtouq_internal (wp, &tw, base, flags & GROUP);
}
else
{
if (number_signed)
num.l = __strtol_internal (wp, &tw, base, flags & GROUP);
else
num.ul = __strtoul_internal (wp, &tw, base, flags & GROUP);
}
if (wp == tw)
conv_error ();
if (!(flags & SUPPRESS))
{
if (! number_signed)
{
if (flags & LONGDBL)
*ARG (unsigned LONGLONG int *) = num.uq;
else if (flags & LONG)
*ARG (unsigned long int *) = num.ul;
else if (flags & SHORT)
*ARG (unsigned short int *)
= (unsigned short int) num.ul;
else
*ARG (unsigned int *) = (unsigned int) num.ul;
}
else
{
if (flags & LONGDBL)
*ARG (LONGLONG int *) = num.q;
else if (flags & LONG)
*ARG (long int *) = num.l;
else if (flags & SHORT)
*ARG (short int *) = (short int) num.l;
else
*ARG (int *) = (int) num.l;
}
++done;
}
break;
case 'e': /* Floating-point numbers. */
case 'E':
case 'f':
case 'g':
case 'G':
c = inchar ();
if (c == EOF)
input_error ();
/* Check for a sign. */
if (c == '-' || c == '+')
{
negative = c == '-';
if (inchar () == EOF)
/* EOF is only an input error before we read any chars. */
conv_error ();
if (width > 0)
--width;
}
else
negative = 0;
got_dot = got_e = 0;
do
{
if (isdigit (c))
ADDW (c);
else if (got_e && wp[wpsize - 1] == 'e'
&& (c == '-' || c == '+'))
ADDW (c);
else if (wpsize > 0 && !got_e && tolower (c) == 'e')
{
ADDW ('e');
got_e = got_dot = 1;
}
else if (c == decimal && !got_dot)
{
ADDW (c);
got_dot = 1;
}
else if ((flags & GROUP) && c == thousands && !got_dot)
ADDW (c);
else
break;
if (width > 0)
--width;
}
while (inchar () != EOF && width != 0);
/* The last read character is not part of the number anymore. */
ungetc (c, s);
if (wpsize == 0)
conv_error ();
/* Convert the number. */
ADDW ('\0');
if (flags & LONGDBL)
{
long double d = __strtold_internal (wp, &tw, flags & GROUP);
if (!(flags & SUPPRESS) && tw != wp)
*ARG (long double *) = negative ? -d : d;
}
else if (flags & LONG)
{
double d = __strtod_internal (wp, &tw, flags & GROUP);
if (!(flags & SUPPRESS) && tw != wp)
*ARG (double *) = negative ? -d : d;
}
else
{
float d = __strtof_internal (wp, &tw, flags & GROUP);
if (!(flags & SUPPRESS) && tw != wp)
*ARG (float *) = negative ? -d : d;
}
if (tw == wp)
conv_error ();
if (!(flags & SUPPRESS))
++done;
break;
case '[': /* Character class. */
if (flags & LONG)
{
STRING_ARG (wstr, wchar_t);
c = '\0'; /* This is to keep gcc quiet. */
}
else
{
STRING_ARG (str, char);
c = inchar ();
if (c == EOF)
input_error ();
}
if (*f == '^')
{
++f;
not_in = 1;
}
else
not_in = 0;
/* Fill WP with byte flags indexed by character.
We will use this flag map for matching input characters. */
if (wpmax < UCHAR_MAX)
{
wpmax = UCHAR_MAX;
wp = (char *) alloca (wpmax);
}
memset (wp, 0, UCHAR_MAX);
fc = *f;
if (fc == ']' || fc == '-')
{
/* If ] or - appears before any char in the set, it is not
the terminator or separator, but the first char in the
set. */
wp[fc] = 1;
++f;
}
while ((fc = *f++) != '\0' && fc != ']')
{
if (fc == '-' && *f != '\0' && *f != ']' &&
(unsigned char) f[-2] <= (unsigned char) *f)
{
/* Add all characters from the one before the '-'
up to (but not including) the next format char. */
for (fc = f[-2]; fc < *f; ++fc)
wp[fc] = 1;
}
else
/* Add the character to the flag map. */
wp[fc] = 1;
}
if (fc == '\0')
{
if (!(flags & LONG))
ungetc (c, s);
conv_error();
}
if (flags & LONG)
{
wint_t val;
int first = 1;
do
{
size_t cnt = 0;
NEXT_WIDE_CHAR (first);
if (val > 255 || wp[val] == not_in)
{
/* XXX We have a problem here. We read a wide
character and this possibly took several
bytes. But we can only push back one single
character. To be sure we don't create wrong
input we push it back only in case it is
representable within one byte. */
if (val < 0x80)
ungetc (val, s);
break;
}
STRING_ADD_CHAR (wstr, val, wchar_t);
if (width > 0)
--width;
first = 0;
}
while (width != 0);
if (first)
conv_error ();
if (!(flags & SUPPRESS))
{
*wstr = L'\0';
++done;
}
}
else
{
num.ul = read_in - 1; /* -1 because we already read one char. */
do
{
if (wp[c] == not_in)
{
ungetc (c, s);
break;
}
STRING_ADD_CHAR (str, c, char);
if (width > 0)
--width;
}
while (width != 0 && inchar () != EOF);
if (read_in == num.ul)
conv_error ();
if (!(flags & SUPPRESS))
{
*str = '\0';
++done;
}
}
break;
case 'p': /* Generic pointer. */
base = 16;
/* A PTR must be the same size as a `long int'. */
flags &= ~(SHORT|LONGDBL);
flags |= LONG;
number_signed = 0;
goto number;
}
}
/* The last thing we saw int the format string was a white space.
Consume the last white spaces. */
if (skip_space)
{
do
c = inchar ();
while (isspace (c));
ungetc (c, s);
}
/* Unlock stream. */
UNLOCK_STREAM;
return done;
}
#ifdef USE_IN_LIBIO
int
__vfscanf (FILE *s, const char *format, va_list argptr)
{
return _IO_vfscanf (s, format, argptr, NULL);
}
#endif
weak_alias (__vfscanf, vfscanf)