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glibc/stdio-common/vfprintf.c
Ulrich Drepper 31c46cf53d Update. 
1999-05-07  Ulrich Drepper  <drepper@cygnus.com>

	* stdio-common/tst-printf.c: Add test case for last _itoa problem.

	* stdio-common/vfprintf.c: Fix typo.
1999-05-07 11:32:00 +00:00

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/* Copyright (C) 1991,92,93,94,95,96,97,98,99 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 <ctype.h>
#include <limits.h>
#include <printf.h>
#include <stdarg.h>
#include <stdint.h>
#include <stdlib.h>
#include <errno.h>
#include <wchar.h>
#include <bits/libc-lock.h>
#include <sys/param.h>
#include "_itoa.h"
#include <locale/localeinfo.h>
/* This code is shared between the standard stdio implementation found
in GNU C library and the libio implementation originally found in
GNU libg++.
Beside this it is also shared between the normal and wide character
implementation as defined in ISO/IEC 9899:1990/Amendment 1:1995. */
#ifndef COMPILE_WPRINTF
# define CHAR_T char
# define UCHAR_T unsigned char
# define INT_T int
# define L_(Str) Str
# define ISDIGIT(Ch) isdigit (Ch)
# ifdef USE_IN_LIBIO
# define PUT(F, S, N) _IO_sputn ((F), (S), (N))
# define PAD(Padchar) \
if (width > 0) \
done += _IO_padn (s, (Padchar), width)
# else
# define PUTC(C, F) putc (C, F)
ssize_t __printf_pad __P ((FILE *, char pad, size_t n));
# define PAD(Padchar) \
if (width > 0) \
{ ssize_t __res = __printf_pad (s, (Padchar), width); \
if (__res == -1) \
{ \
done = -1; \
goto all_done; \
} \
done += __res; }
# endif
#else
# define vfprintf vfwprintf
# define CHAR_T wchar_t
# define UCHAR_T uwchar_t
# define INT_T wint_t
# define L_(Str) L##Str
# define ISDIGIT(Ch) iswdigit (Ch)
# ifdef USE_IN_LIBIO
# define PUT(F, S, N) _IO_sputn ((F), (S), (N))
# define PAD(Padchar) \
if (width > 0) \
done += _IO_wpadn (s, (Padchar), width)
# else
# define PUTC(C, F) wputc (C, F)
ssize_t __wprintf_pad __P ((FILE *, wchar_t pad, size_t n));
# define PAD(Padchar) \
if (width > 0) \
{ ssize_t __res = __wprintf_pad (s, (Padchar), width); \
if (__res == -1) \
{ \
done = -1; \
goto all_done; \
} \
done += __res; }
# endif
#endif
/* Include the shared code for parsing the format string. */
#include "printf-parse.h"
#ifdef USE_IN_LIBIO
/* This code is for use in libio. */
# include <libioP.h>
# define PUTC(C, F) _IO_putc_unlocked (C, F)
# define vfprintf _IO_vfprintf
# define FILE _IO_FILE
# undef va_list
# define va_list _IO_va_list
# undef BUFSIZ
# define BUFSIZ _IO_BUFSIZ
# define ARGCHECK(S, Format) \
do \
{ \
/* Check file argument for consistence. */ \
CHECK_FILE (S, -1); \
if (S->_flags & _IO_NO_WRITES) \
{ \
__set_errno (EBADF); \
return -1; \
} \
if (Format == NULL) \
{ \
MAYBE_SET_EINVAL; \
return -1; \
} \
} while (0)
# define UNBUFFERED_P(S) ((S)->_IO_file_flags & _IO_UNBUFFERED)
#else /* ! USE_IN_LIBIO */
/* This code is for use in the GNU C library. */
# include <stdio.h>
# define PUT(F, S, N) fwrite (S, 1, N, F)
# define ARGCHECK(S, Format) \
do \
{ \
/* Check file argument for consistence. */ \
if (!__validfp (S) || !S->__mode.__write) \
{ \
__set_errno (EBADF); \
return -1; \
} \
if (Format == NULL) \
{ \
__set_errno (EINVAL); \
return -1; \
} \
if (!S->__seen) \
{ \
if (__flshfp (S, EOF) == EOF) \
return -1; \
} \
} \
while (0)
# define UNBUFFERED_P(s) ((s)->__buffer == NULL)
/* XXX These declarations should go as soon as the stdio header files
have these prototypes. */
extern void __flockfile (FILE *);
extern void __funlockfile (FILE *);
#endif /* USE_IN_LIBIO */
#define outchar(Ch) \
do \
{ \
register const int outc = (Ch); \
if (PUTC (outc, s) == EOF) \
{ \
done = -1; \
goto all_done; \
} \
else \
++done; \
} \
while (0)
#define outstring(String, Len) \
do \
{ \
if ((size_t) PUT (s, (String), (Len)) != (size_t) (Len)) \
{ \
done = -1; \
goto all_done; \
} \
done += (Len); \
} \
while (0)
/* For handling long_double and longlong we use the same flag. */
#ifndef is_longlong
# define is_longlong is_long_double
#endif
/* Global variables. */
static const char null[] = "(null)";
/* Helper function to provide temporary buffering for unbuffered streams. */
static int buffered_vfprintf __P ((FILE *stream, const CHAR_T *fmt, va_list))
internal_function;
/* Handle unknown format specifier. */
static int printf_unknown __P ((FILE *, const struct printf_info *,
const void *const *));
/* Group digits of number string. */
static char *group_number __P ((CHAR_T *, CHAR_T *, const CHAR_T *, wchar_t))
internal_function;
/* The function itself. */
int
vfprintf (FILE *s, const CHAR_T *format, va_list ap)
{
/* The character used as thousands separator. */
wchar_t thousands_sep;
/* The string describing the size of groups of digits. */
const char *grouping;
/* Place to accumulate the result. */
int done;
/* Current character in format string. */
const UCHAR_T *f;
/* End of leading constant string. */
const UCHAR_T *lead_str_end;
/* Points to next format specifier. */
const UCHAR_T *end_of_spec;
/* Buffer intermediate results. */
char work_buffer[1000];
char *workend;
/* State for restartable multibyte character handling functions. */
mbstate_t mbstate;
/* We have to save the original argument pointer. */
va_list ap_save;
/* Count number of specifiers we already processed. */
int nspecs_done;
/* For the %m format we may need the current `errno' value. */
int save_errno = errno;
/* This table maps a character into a number representing a
class. In each step there is a destination label for each
class. */
static const int jump_table[] =
{
/* ' ' */ 1, 0, 0, /* '#' */ 4,
0, /* '%' */ 14, 0, /* '\''*/ 6,
0, 0, /* '*' */ 7, /* '+' */ 2,
0, /* '-' */ 3, /* '.' */ 9, 0,
/* '0' */ 5, /* '1' */ 8, /* '2' */ 8, /* '3' */ 8,
/* '4' */ 8, /* '5' */ 8, /* '6' */ 8, /* '7' */ 8,
/* '8' */ 8, /* '9' */ 8, 0, 0,
0, 0, 0, 0,
0, /* 'A' */ 26, 0, /* 'C' */ 25,
0, /* 'E' */ 19, 0, /* 'G' */ 19,
0, 0, 0, 0,
/* 'L' */ 12, 0, 0, 0,
0, 0, 0, /* 'S' */ 21,
0, 0, 0, 0,
/* 'X' */ 18, 0, /* 'Z' */ 13, 0,
0, 0, 0, 0,
0, /* 'a' */ 26, 0, /* 'c' */ 20,
/* 'd' */ 15, /* 'e' */ 19, /* 'f' */ 19, /* 'g' */ 19,
/* 'h' */ 10, /* 'i' */ 15, /* 'j' */ 28, 0,
/* 'l' */ 11, /* 'm' */ 24, /* 'n' */ 23, /* 'o' */ 17,
/* 'p' */ 22, /* 'q' */ 12, 0, /* 's' */ 21,
/* 't' */ 27, /* 'u' */ 16, 0, 0,
/* 'x' */ 18, 0, /* 'z' */ 13
};
#define NOT_IN_JUMP_RANGE(Ch) ((Ch) < ' ' || (Ch) > 'z')
#define CHAR_CLASS(Ch) (jump_table[(int) (Ch) - ' '])
#define JUMP(ChExpr, table) \
do \
{ \
const void *ptr; \
spec = (ChExpr); \
ptr = NOT_IN_JUMP_RANGE (spec) ? REF (form_unknown) \
: table[CHAR_CLASS (spec)]; \
goto *ptr; \
} \
while (0)
#define STEP0_3_TABLE \
/* Step 0: at the beginning. */ \
static const void *step0_jumps[29] = \
{ \
REF (form_unknown), \
REF (flag_space), /* for ' ' */ \
REF (flag_plus), /* for '+' */ \
REF (flag_minus), /* for '-' */ \
REF (flag_hash), /* for '<hash>' */ \
REF (flag_zero), /* for '0' */ \
REF (flag_quote), /* for '\'' */ \
REF (width_asterics), /* for '*' */ \
REF (width), /* for '1'...'9' */ \
REF (precision), /* for '.' */ \
REF (mod_half), /* for 'h' */ \
REF (mod_long), /* for 'l' */ \
REF (mod_longlong), /* for 'L', 'q' */ \
REF (mod_size_t), /* for 'z', 'Z' */ \
REF (form_percent), /* for '%' */ \
REF (form_integer), /* for 'd', 'i' */ \
REF (form_unsigned), /* for 'u' */ \
REF (form_octal), /* for 'o' */ \
REF (form_hexa), /* for 'X', 'x' */ \
REF (form_float), /* for 'E', 'e', 'f', 'G', 'g' */ \
REF (form_character), /* for 'c' */ \
REF (form_string), /* for 's', 'S' */ \
REF (form_pointer), /* for 'p' */ \
REF (form_number), /* for 'n' */ \
REF (form_strerror), /* for 'm' */ \
REF (form_wcharacter), /* for 'C' */ \
REF (form_floathex), /* for 'A', 'a' */ \
REF (mod_ptrdiff_t), /* for 't' */ \
REF (mod_intmax_t), /* for 'j' */ \
}; \
/* Step 1: after processing width. */ \
static const void *step1_jumps[29] = \
{ \
REF (form_unknown), \
REF (form_unknown), /* for ' ' */ \
REF (form_unknown), /* for '+' */ \
REF (form_unknown), /* for '-' */ \
REF (form_unknown), /* for '<hash>' */ \
REF (form_unknown), /* for '0' */ \
REF (form_unknown), /* for '\'' */ \
REF (form_unknown), /* for '*' */ \
REF (form_unknown), /* for '1'...'9' */ \
REF (precision), /* for '.' */ \
REF (mod_half), /* for 'h' */ \
REF (mod_long), /* for 'l' */ \
REF (mod_longlong), /* for 'L', 'q' */ \
REF (mod_size_t), /* for 'z', 'Z' */ \
REF (form_percent), /* for '%' */ \
REF (form_integer), /* for 'd', 'i' */ \
REF (form_unsigned), /* for 'u' */ \
REF (form_octal), /* for 'o' */ \
REF (form_hexa), /* for 'X', 'x' */ \
REF (form_float), /* for 'E', 'e', 'f', 'G', 'g' */ \
REF (form_character), /* for 'c' */ \
REF (form_string), /* for 's', 'S' */ \
REF (form_pointer), /* for 'p' */ \
REF (form_number), /* for 'n' */ \
REF (form_strerror), /* for 'm' */ \
REF (form_wcharacter), /* for 'C' */ \
REF (form_floathex), /* for 'A', 'a' */ \
REF (mod_ptrdiff_t), /* for 't' */ \
REF (mod_intmax_t) /* for 'j' */ \
}; \
/* Step 2: after processing precision. */ \
static const void *step2_jumps[29] = \
{ \
REF (form_unknown), \
REF (form_unknown), /* for ' ' */ \
REF (form_unknown), /* for '+' */ \
REF (form_unknown), /* for '-' */ \
REF (form_unknown), /* for '<hash>' */ \
REF (form_unknown), /* for '0' */ \
REF (form_unknown), /* for '\'' */ \
REF (form_unknown), /* for '*' */ \
REF (form_unknown), /* for '1'...'9' */ \
REF (form_unknown), /* for '.' */ \
REF (mod_half), /* for 'h' */ \
REF (mod_long), /* for 'l' */ \
REF (mod_longlong), /* for 'L', 'q' */ \
REF (mod_size_t), /* for 'z', 'Z' */ \
REF (form_percent), /* for '%' */ \
REF (form_integer), /* for 'd', 'i' */ \
REF (form_unsigned), /* for 'u' */ \
REF (form_octal), /* for 'o' */ \
REF (form_hexa), /* for 'X', 'x' */ \
REF (form_float), /* for 'E', 'e', 'f', 'G', 'g' */ \
REF (form_character), /* for 'c' */ \
REF (form_string), /* for 's', 'S' */ \
REF (form_pointer), /* for 'p' */ \
REF (form_number), /* for 'n' */ \
REF (form_strerror), /* for 'm' */ \
REF (form_wcharacter), /* for 'C' */ \
REF (form_floathex), /* for 'A', 'a' */ \
REF (mod_ptrdiff_t), /* for 't' */ \
REF (mod_intmax_t) /* for 'j' */ \
}; \
/* Step 3a: after processing first 'h' modifier. */ \
static const void *step3a_jumps[29] = \
{ \
REF (form_unknown), \
REF (form_unknown), /* for ' ' */ \
REF (form_unknown), /* for '+' */ \
REF (form_unknown), /* for '-' */ \
REF (form_unknown), /* for '<hash>' */ \
REF (form_unknown), /* for '0' */ \
REF (form_unknown), /* for '\'' */ \
REF (form_unknown), /* for '*' */ \
REF (form_unknown), /* for '1'...'9' */ \
REF (form_unknown), /* for '.' */ \
REF (mod_halfhalf), /* for 'h' */ \
REF (form_unknown), /* for 'l' */ \
REF (form_unknown), /* for 'L', 'q' */ \
REF (form_unknown), /* for 'z', 'Z' */ \
REF (form_percent), /* for '%' */ \
REF (form_integer), /* for 'd', 'i' */ \
REF (form_unsigned), /* for 'u' */ \
REF (form_octal), /* for 'o' */ \
REF (form_hexa), /* for 'X', 'x' */ \
REF (form_unknown), /* for 'E', 'e', 'f', 'G', 'g' */ \
REF (form_unknown), /* for 'c' */ \
REF (form_unknown), /* for 's', 'S' */ \
REF (form_unknown), /* for 'p' */ \
REF (form_number), /* for 'n' */ \
REF (form_unknown), /* for 'm' */ \
REF (form_unknown), /* for 'C' */ \
REF (form_unknown), /* for 'A', 'a' */ \
REF (form_unknown), /* for 't' */ \
REF (form_unknown) /* for 'j' */ \
}; \
/* Step 3b: after processing first 'l' modifier. */ \
static const void *step3b_jumps[29] = \
{ \
REF (form_unknown), \
REF (form_unknown), /* for ' ' */ \
REF (form_unknown), /* for '+' */ \
REF (form_unknown), /* for '-' */ \
REF (form_unknown), /* for '<hash>' */ \
REF (form_unknown), /* for '0' */ \
REF (form_unknown), /* for '\'' */ \
REF (form_unknown), /* for '*' */ \
REF (form_unknown), /* for '1'...'9' */ \
REF (form_unknown), /* for '.' */ \
REF (form_unknown), /* for 'h' */ \
REF (mod_longlong), /* for 'l' */ \
REF (form_unknown), /* for 'L', 'q' */ \
REF (form_unknown), /* for 'z', 'Z' */ \
REF (form_percent), /* for '%' */ \
REF (form_integer), /* for 'd', 'i' */ \
REF (form_unsigned), /* for 'u' */ \
REF (form_octal), /* for 'o' */ \
REF (form_hexa), /* for 'X', 'x' */ \
REF (form_float), /* for 'E', 'e', 'f', 'G', 'g' */ \
REF (form_character), /* for 'c' */ \
REF (form_string), /* for 's', 'S' */ \
REF (form_pointer), /* for 'p' */ \
REF (form_number), /* for 'n' */ \
REF (form_strerror), /* for 'm' */ \
REF (form_wcharacter), /* for 'C' */ \
REF (form_floathex), /* for 'A', 'a' */ \
REF (form_unknown), /* for 't' */ \
REF (form_unknown) /* for 'j' */ \
}
#define STEP4_TABLE \
/* Step 4: processing format specifier. */ \
static const void *step4_jumps[29] = \
{ \
REF (form_unknown), \
REF (form_unknown), /* for ' ' */ \
REF (form_unknown), /* for '+' */ \
REF (form_unknown), /* for '-' */ \
REF (form_unknown), /* for '<hash>' */ \
REF (form_unknown), /* for '0' */ \
REF (form_unknown), /* for '\'' */ \
REF (form_unknown), /* for '*' */ \
REF (form_unknown), /* for '1'...'9' */ \
REF (form_unknown), /* for '.' */ \
REF (form_unknown), /* for 'h' */ \
REF (form_unknown), /* for 'l' */ \
REF (form_unknown), /* for 'L', 'q' */ \
REF (form_unknown), /* for 'z', 'Z' */ \
REF (form_percent), /* for '%' */ \
REF (form_integer), /* for 'd', 'i' */ \
REF (form_unsigned), /* for 'u' */ \
REF (form_octal), /* for 'o' */ \
REF (form_hexa), /* for 'X', 'x' */ \
REF (form_float), /* for 'E', 'e', 'f', 'G', 'g' */ \
REF (form_character), /* for 'c' */ \
REF (form_string), /* for 's', 'S' */ \
REF (form_pointer), /* for 'p' */ \
REF (form_number), /* for 'n' */ \
REF (form_strerror), /* for 'm' */ \
REF (form_wcharacter), /* for 'C' */ \
REF (form_floathex), /* for 'A', 'a' */ \
REF (form_unknown), /* for 't' */ \
REF (form_unknown) /* for 'j' */ \
}
#define process_arg(fspec) \
/* Start real work. We know about all flags and modifiers and \
now process the wanted format specifier. */ \
LABEL (form_percent): \
/* Write a literal "%". */ \
outchar ('%'); \
break; \
\
LABEL (form_integer): \
/* Signed decimal integer. */ \
base = 10; \
\
if (is_longlong) \
{ \
long long int signed_number; \
\
if (fspec == NULL) \
signed_number = va_arg (ap, long long int); \
else \
signed_number = args_value[fspec->data_arg].pa_long_long_int; \
\
is_negative = signed_number < 0; \
number.longlong = is_negative ? (- signed_number) : signed_number; \
\
goto LABEL (longlong_number); \
} \
else \
{ \
long int signed_number; \
\
if (fspec == NULL) \
{ \
if (is_long) \
signed_number = va_arg (ap, long int); \
else /* `char' and `short int' will be promoted to `int'. */ \
signed_number = va_arg (ap, int); \
} \
else \
if (is_long) \
signed_number = args_value[fspec->data_arg].pa_long_int; \
else \
signed_number = args_value[fspec->data_arg].pa_int; \
\
is_negative = signed_number < 0; \
number.word = is_negative ? (- signed_number) : signed_number; \
\
goto LABEL (number); \
} \
/* NOTREACHED */ \
\
LABEL (form_unsigned): \
/* Unsigned decimal integer. */ \
base = 10; \
goto LABEL (unsigned_number); \
/* NOTREACHED */ \
\
LABEL (form_octal): \
/* Unsigned octal integer. */ \
base = 8; \
goto LABEL (unsigned_number); \
/* NOTREACHED */ \
\
LABEL (form_hexa): \
/* Unsigned hexadecimal integer. */ \
base = 16; \
\
LABEL (unsigned_number): /* Unsigned number of base BASE. */ \
\
/* ISO specifies the `+' and ` ' flags only for signed \
conversions. */ \
is_negative = 0; \
showsign = 0; \
space = 0; \
\
if (is_longlong) \
{ \
if (fspec == NULL) \
number.longlong = va_arg (ap, unsigned long long int); \
else \
number.longlong = args_value[fspec->data_arg].pa_u_long_long_int; \
\
LABEL (longlong_number): \
if (prec < 0) \
/* Supply a default precision if none was given. */ \
prec = 1; \
else \
/* We have to take care for the '0' flag. If a precision \
is given it must be ignored. */ \
pad = ' '; \
\
/* If the precision is 0 and the number is 0 nothing has to \
be written for the number, except for the 'o' format in \
alternate form. */ \
if (prec == 0 && number.longlong == 0) \
{ \
string = workend; \
if (base == 8 && alt) \
*string-- = '0'; \
} \
else \
{ \
/* Put the number in WORK. */ \
string = _itoa (number.longlong, workend + 1, base, \
spec == 'X'); \
string -= 1; \
if (group && grouping) \
string = group_number (string, workend, grouping, \
thousands_sep); \
} \
/* Simplify further test for num != 0. */ \
number.word = number.longlong != 0; \
} \
else \
{ \
if (fspec == NULL) \
{ \
if (is_long) \
number.word = va_arg (ap, unsigned long int); \
else if (!is_short) \
number.word = va_arg (ap, unsigned int); \
else \
number.word = (unsigned short int) va_arg (ap, unsigned int); \
} \
else \
if (is_long) \
number.word = args_value[fspec->data_arg].pa_u_long_int; \
else if (is_char) \
number.word = (unsigned char) \
args_value[fspec->data_arg].pa_char; \
else if (!is_short) \
number.word = args_value[fspec->data_arg].pa_u_int; \
else \
number.word = (unsigned short int) \
args_value[fspec->data_arg].pa_u_short_int; \
\
LABEL (number): \
if (prec < 0) \
/* Supply a default precision if none was given. */ \
prec = 1; \
else \
/* We have to take care for the '0' flag. If a precision \
is given it must be ignored. */ \
pad = ' '; \
\
/* If the precision is 0 and the number is 0 nothing has to \
be written for the number, except for the 'o' format in \
alternate form. */ \
if (prec == 0 && number.word == 0) \
{ \
string = workend; \
if (base == 8 && alt) \
*string-- = '0'; \
} \
else \
{ \
/* Put the number in WORK. */ \
string = _itoa_word (number.word, workend + 1, base, \
spec == 'X'); \
string -= 1; \
if (group && grouping) \
string = group_number (string, workend, grouping, \
thousands_sep); \
} \
} \
\
prec -= workend - string; \
\
if (prec > 0) \
/* Add zeros to the precision. */ \
while (prec-- > 0) \
*string-- = '0'; \
else if (number.word != 0 && alt && base == 8) \
/* Add octal marker. */ \
*string-- = '0'; \
\
if (!left) \
{ \
width -= workend - string; \
\
if (number.word != 0 && alt && base == 16) \
/* Account for 0X hex marker. */ \
width -= 2; \
\
if (is_negative || showsign || space) \
--width; \
\
if (pad == '0') \
{ \
while (width-- > 0) \
*string-- = '0'; \
\
if (number.word != 0 && alt && base == 16) \
{ \
*string-- = spec; \
*string-- = '0'; \
} \
\
if (is_negative) \
*string-- = '-'; \
else if (showsign) \
*string-- = '+'; \
else if (space) \
*string-- = ' '; \
} \
else \
{ \
if (number.word != 0 && alt && base == 16) \
{ \
*string-- = spec; \
*string-- = '0'; \
} \
\
if (is_negative) \
*string-- = '-'; \
else if (showsign) \
*string-- = '+'; \
else if (space) \
*string-- = ' '; \
\
while (width-- > 0) \
*string-- = ' '; \
} \
\
outstring (string + 1, workend - string); \
\
break; \
} \
else \
{ \
if (number.word != 0 && alt && base == 16) \
{ \
*string-- = spec; \
*string-- = '0'; \
} \
\
if (is_negative) \
*string-- = '-'; \
else if (showsign) \
*string-- = '+'; \
else if (space) \
*string-- = ' '; \
\
width -= workend - string; \
outstring (string + 1, workend - string); \
\
PAD (' '); \
break; \
} \
\
LABEL (form_float): \
{ \
/* Floating-point number. This is handled by printf_fp.c. */ \
extern int __printf_fp __P ((FILE *, const struct printf_info *, \
const void **const)); \
const void *ptr; \
int function_done; \
\
if (fspec == NULL) \
{ \
struct printf_info info = { prec: prec, \
width: width, \
spec: spec, \
is_long_double: is_long_double, \
is_short: is_short, \
is_long: is_long, \
alt: alt, \
space: space, \
left: left, \
showsign: showsign, \
group: group, \
pad: pad, \
extra: 0 }; \
\
if (is_long_double) \
the_arg.pa_long_double = va_arg (ap, long double); \
else \
the_arg.pa_double = va_arg (ap, double); \
ptr = (const void *) &the_arg; \
\
function_done = __printf_fp (s, &info, &ptr); \
} \
else \
{ \
ptr = (const void *) &args_value[fspec->data_arg]; \
\
function_done = __printf_fp (s, &fspec->info, &ptr); \
} \
\
if (function_done < 0) \
{ \
/* Error in print handler. */ \
done = -1; \
goto all_done; \
} \
\
done += function_done; \
} \
break; \
\
LABEL (form_floathex): \
{ \
/* FLoating point number printed as hexadecimal number. */ \
extern int __printf_fphex __P ((FILE *, const struct printf_info *, \
const void **const)); \
const void *ptr; \
int function_done; \
\
if (fspec == NULL) \
{ \
struct printf_info info = { prec: prec, \
width: width, \
spec: spec, \
is_long_double: is_long_double, \
is_short: is_short, \
is_long: is_long, \
alt: alt, \
space: space, \
left: left, \
showsign: showsign, \
group: group, \
pad: pad, \
extra: 0 }; \
\
if (is_long_double) \
the_arg.pa_long_double = va_arg (ap, long double); \
else \
the_arg.pa_double = va_arg (ap, double); \
ptr = (const void *) &the_arg; \
\
function_done = __printf_fphex (s, &info, &ptr); \
} \
else \
{ \
ptr = (const void *) &args_value[fspec->data_arg]; \
\
function_done = __printf_fphex (s, &fspec->info, &ptr); \
} \
\
if (function_done < 0) \
{ \
/* Error in print handler. */ \
done = -1; \
goto all_done; \
} \
\
done += function_done; \
} \
break; \
\
LABEL (form_character): \
/* Character. */ \
if (is_long) \
goto LABEL (form_wcharacter); \
--width; /* Account for the character itself. */ \
if (!left) \
PAD (' '); \
if (fspec == NULL) \
outchar ((unsigned char) va_arg (ap, int)); /* Promoted. */ \
else \
outchar ((unsigned char) args_value[fspec->data_arg].pa_char); \
if (left) \
PAD (' '); \
break; \
\
LABEL (form_wcharacter): \
{ \
/* Wide character. */ \
char buf[MB_CUR_MAX]; \
mbstate_t mbstate; \
size_t len; \
\
memset (&mbstate, '\0', sizeof (mbstate_t)); \
len = __wcrtomb (buf, (fspec == NULL ? va_arg (ap, wint_t) \
: args_value[fspec->data_arg].pa_wchar), \
&mbstate); \
width -= len; \
if (!left) \
PAD (' '); \
outstring (buf, len); \
if (left) \
PAD (' '); \
} \
break; \
\
LABEL (form_string): \
{ \
size_t len; \
\
/* The string argument could in fact be `char *' or `wchar_t *'. \
But this should not make a difference here. */ \
if (fspec == NULL) \
string = (char *) va_arg (ap, const char *); \
else \
string = (char *) args_value[fspec->data_arg].pa_string; \
\
/* Entry point for printing other strings. */ \
LABEL (print_string): \
\
if (string == NULL) \
{ \
/* Write "(null)" if there's space. */ \
if (prec == -1 || prec >= (int) sizeof (null) - 1) \
{ \
string = (char *) null; \
len = sizeof (null) - 1; \
} \
else \
{ \
string = (char *) ""; \
len = 0; \
} \
} \
else if (!is_long && spec != L_('S')) \
{ \
if (prec != -1) \
/* Search for the end of the string, but don't search past \
the length specified by the precision. */ \
len = strnlen (string, prec); \
else \
len = strlen (string); \
} \
else \
{ \
const wchar_t *s2 = (const wchar_t *) string; \
mbstate_t mbstate; \
\
memset (&mbstate, '\0', sizeof (mbstate_t)); \
len = __wcsrtombs (NULL, &s2, 0, &mbstate); \
if (len == (size_t) -1) \
{ \
/* Illegal wide-character string. */ \
done = -1; \
goto all_done; \
} \
\
assert (__mbsinit (&mbstate)); \
s2 = (const wchar_t *) string; \
string = alloca (len + 1); \
(void) __wcsrtombs (string, &s2, len + 1, &mbstate); \
if (prec < len) \
len = prec; \
} \
\
if ((width -= len) < 0) \
{ \
outstring (string, len); \
break; \
} \
\
if (!left) \
PAD (' '); \
outstring (string, len); \
if (left) \
PAD (' '); \
} \
break; \
\
LABEL (form_pointer): \
/* Generic pointer. */ \
{ \
const void *ptr; \
if (fspec == NULL) \
ptr = va_arg (ap, void *); \
else \
ptr = args_value[fspec->data_arg].pa_pointer; \
if (ptr != NULL) \
{ \
/* If the pointer is not NULL, write it as a %#x spec. */ \
base = 16; \
number.word = (unsigned long int) ptr; \
is_negative = 0; \
alt = 1; \
group = 0; \
spec = 'x'; \
goto LABEL (number); \
} \
else \
{ \
/* Write "(nil)" for a nil pointer. */ \
string = (char *) "(nil)"; \
/* Make sure the full string "(nil)" is printed. */ \
if (prec < 5) \
prec = 5; \
is_long = 0; /* This is no wide-char string. */ \
goto LABEL (print_string); \
} \
} \
/* NOTREACHED */ \
\
LABEL (form_number): \
/* Answer the count of characters written. */ \
if (fspec == NULL) \
{ \
if (is_longlong) \
*(long long int *) va_arg (ap, void *) = done; \
else if (is_long) \
*(long int *) va_arg (ap, void *) = done; \
else if (!is_short) \
*(int *) va_arg (ap, void *) = done; \
else \
*(short int *) va_arg (ap, void *) = done; \
} \
else \
if (is_longlong) \
*(long long int *) args_value[fspec->data_arg].pa_pointer = done; \
else if (is_long) \
*(long int *) args_value[fspec->data_arg].pa_pointer = done; \
else if (!is_short) \
*(int *) args_value[fspec->data_arg].pa_pointer = done; \
else \
*(short int *) args_value[fspec->data_arg].pa_pointer = done; \
break; \
\
LABEL (form_strerror): \
/* Print description of error ERRNO. */ \
string = \
(char *) __strerror_r (save_errno, work_buffer, sizeof work_buffer); \
is_long = 0; /* This is no wide-char string. */ \
goto LABEL (print_string)
/* Sanity check of arguments. */
ARGCHECK (s, format);
if (UNBUFFERED_P (s))
/* Use a helper function which will allocate a local temporary buffer
for the stream and then call us again. */
return buffered_vfprintf (s, format, ap);
/* Initialize local variables. */
done = 0;
grouping = (const char *) -1;
#ifdef __va_copy
/* This macro will be available soon in gcc's <stdarg.h>. We need it
since on some systems `va_list' is not an integral type. */
__va_copy (ap_save, ap);
#else
ap_save = ap;
#endif
nspecs_done = 0;
/* Put state for processing format string in initial state. */
memset (&mbstate, '\0', sizeof (mbstate_t));
/* Find the first format specifier. */
f = lead_str_end = find_spec (format, &mbstate);
/* Lock stream. */
#ifdef USE_IN_LIBIO
__libc_cleanup_region_start ((void (*) (void *)) &_IO_funlockfile, s);
_IO_flockfile (s);
#else
__libc_cleanup_region_start ((void (*) (void *)) &__funlockfile, s);
__flockfile (s);
#endif
/* Write the literal text before the first format. */
outstring ((const UCHAR_T *) format,
lead_str_end - (const UCHAR_T *) format);
/* If we only have to print a simple string, return now. */
if (*f == L_('\0'))
goto all_done;
/* Process whole format string. */
do
{
#define REF(Name) &&do_##Name
#define LABEL(Name) do_##Name
STEP0_3_TABLE;
STEP4_TABLE;
union printf_arg *args_value; /* This is not used here but ... */
int is_negative; /* Flag for negative number. */
union
{
unsigned long long int longlong;
unsigned long int word;
} number;
int base;
union printf_arg the_arg;
char *string; /* Pointer to argument string. */
int alt = 0; /* Alternate format. */
int space = 0; /* Use space prefix if no sign is needed. */
int left = 0; /* Left-justify output. */
int showsign = 0; /* Always begin with plus or minus sign. */
int group = 0; /* Print numbers according grouping rules. */
int is_long_double = 0; /* Argument is long double/ long long int. */
int is_short = 0; /* Argument is long int. */
int is_long = 0; /* Argument is short int. */
int is_char = 0; /* Argument is promoted (unsigned) char. */
int width = 0; /* Width of output; 0 means none specified. */
int prec = -1; /* Precision of output; -1 means none specified. */
char pad = ' '; /* Padding character. */
CHAR_T spec;
workend = &work_buffer[sizeof (work_buffer) - 1];
/* Get current character in format string. */
JUMP (*++f, step0_jumps);
/* ' ' flag. */
LABEL (flag_space):
space = 1;
JUMP (*++f, step0_jumps);
/* '+' flag. */
LABEL (flag_plus):
showsign = 1;
JUMP (*++f, step0_jumps);
/* The '-' flag. */
LABEL (flag_minus):
left = 1;
pad = L_(' ');
JUMP (*++f, step0_jumps);
/* The '#' flag. */
LABEL (flag_hash):
alt = 1;
JUMP (*++f, step0_jumps);
/* The '0' flag. */
LABEL (flag_zero):
if (!left)
pad = L_('0');
JUMP (*++f, step0_jumps);
/* The '\'' flag. */
LABEL (flag_quote):
group = 1;
/* XXX Completely wrong. Use wctob. */
if (grouping == (const char *) -1)
{
mbstate_t mbstate;
/* Figure out the thousands separator character. */
memset (&mbstate, '\0', sizeof (mbstate));
if (__mbrtowc (&thousands_sep,
_NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP),
strlen (_NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP)),
&mbstate) <= 0)
thousands_sep = (wchar_t)
*_NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP);
grouping = _NL_CURRENT (LC_NUMERIC, GROUPING);
if (*grouping == '\0' || *grouping == CHAR_MAX
|| thousands_sep == L'\0')
grouping = NULL;
}
JUMP (*++f, step0_jumps);
/* Get width from argument. */
LABEL (width_asterics):
{
const UCHAR_T *tmp; /* Temporary value. */
tmp = ++f;
if (ISDIGIT (*tmp) && read_int (&tmp) && *tmp == L_('$'))
/* The width comes from a positional parameter. */
goto do_positional;
width = va_arg (ap, int);
/* Negative width means left justified. */
if (width < 0)
{
width = -width;
pad = L_(' ');
left = 1;
}
if (width + 32 >= sizeof (work_buffer))
/* We have to use a special buffer. The "32" is just a safe
bet for all the output which is not counted in the width. */
workend = alloca (width + 32) + (width + 31);
}
JUMP (*f, step1_jumps);
/* Given width in format string. */
LABEL (width):
width = read_int (&f);
if (width + 32 >= sizeof (work_buffer))
/* We have to use a special buffer. The "32" is just a safe
bet for all the output which is not counted in the width. */
workend = alloca (width + 32) + (width + 31);
if (*f == L_('$'))
/* Oh, oh. The argument comes from a positional parameter. */
goto do_positional;
JUMP (*f, step1_jumps);
LABEL (precision):
++f;
if (*f == L_('*'))
{
const UCHAR_T *tmp; /* Temporary value. */
tmp = ++f;
if (ISDIGIT (*tmp) && read_int (&tmp) > 0 && *tmp == L_('$'))
/* The precision comes from a positional parameter. */
goto do_positional;
prec = va_arg (ap, int);
/* If the precision is negative the precision is omitted. */
if (prec < 0)
prec = -1;
}
else if (ISDIGIT (*f))
prec = read_int (&f);
else
prec = 0;
if (prec > width && prec + 32 > sizeof (work_buffer))
workend = alloca (spec + 32) + (spec + 31);
JUMP (*f, step2_jumps);
/* Process 'h' modifier. There might another 'h' following. */
LABEL (mod_half):
is_short = 1;
JUMP (*++f, step3a_jumps);
/* Process 'hh' modifier. */
LABEL (mod_halfhalf):
is_short = 0;
is_char = 1;
JUMP (*++f, step4_jumps);
/* Process 'l' modifier. There might another 'l' following. */
LABEL (mod_long):
is_long = 1;
JUMP (*++f, step3b_jumps);
/* Process 'L', 'q', or 'll' modifier. No other modifier is
allowed to follow. */
LABEL (mod_longlong):
is_long_double = 1;
JUMP (*++f, step4_jumps);
LABEL (mod_size_t):
is_longlong = sizeof (size_t) > sizeof (unsigned long int);
is_long = sizeof (size_t) > sizeof (unsigned int);
JUMP (*++f, step4_jumps);
LABEL (mod_ptrdiff_t):
is_longlong = sizeof (ptrdiff_t) > sizeof (unsigned long int);
is_long = sizeof (ptrdiff_t) > sizeof (unsigned int);
JUMP (*++f, step4_jumps);
LABEL (mod_intmax_t):
is_longlong = sizeof (intmax_t) > sizeof (unsigned long int);
is_long = sizeof (intmax_t) > sizeof (unsigned int);
JUMP (*++f, step4_jumps);
/* Process current format. */
while (1)
{
process_arg (((struct printf_spec *) NULL));
LABEL (form_unknown):
if (spec == L_('\0'))
{
/* The format string ended before the specifier is complete. */
done = -1;
goto all_done;
}
/* If we are in the fast loop force entering the complicated
one. */
goto do_positional;
}
/* The format is correctly handled. */
++nspecs_done;
/* Look for next format specifier. */
f = find_spec ((end_of_spec = ++f), &mbstate);
/* Write the following constant string. */
outstring (end_of_spec, f - end_of_spec);
}
while (*f != L_('\0'));
/* Unlock stream and return. */
goto all_done;
/* Here starts the more complex loop to handle positional parameters. */
do_positional:
{
/* Array with information about the needed arguments. This has to
be dynamically extensible. */
size_t nspecs = 0;
size_t nspecs_max = 32; /* A more or less arbitrary start value. */
struct printf_spec *specs
= alloca (nspecs_max * sizeof (struct printf_spec));
/* The number of arguments the format string requests. This will
determine the size of the array needed to store the argument
attributes. */
size_t nargs = 0;
int *args_type;
union printf_arg *args_value;
/* Positional parameters refer to arguments directly. This could
also determine the maximum number of arguments. Track the
maximum number. */
size_t max_ref_arg = 0;
/* Just a counter. */
size_t cnt;
if (grouping == (const char *) -1)
{
mbstate_t mbstate;
/* Figure out the thousands separator character. */
memset (&mbstate, '\0', sizeof (mbstate));
if (__mbrtowc (&thousands_sep,
_NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP),
strlen (_NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP)),
&mbstate) <= 0)
thousands_sep = (wchar_t) *_NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP);
grouping = _NL_CURRENT (LC_NUMERIC, GROUPING);
if (*grouping == '\0' || *grouping == CHAR_MAX
|| thousands_sep == L'\0')
grouping = NULL;
}
for (f = lead_str_end; *f != '\0'; f = specs[nspecs++].next_fmt)
{
if (nspecs >= nspecs_max)
{
/* Extend the array of format specifiers. */
struct printf_spec *old = specs;
nspecs_max *= 2;
specs = alloca (nspecs_max * sizeof (struct printf_spec));
if (specs == &old[nspecs])
/* Stack grows up, OLD was the last thing allocated;
extend it. */
nspecs_max += nspecs_max / 2;
else
{
/* Copy the old array's elements to the new space. */
memcpy (specs, old, nspecs * sizeof (struct printf_spec));
if (old == &specs[nspecs])
/* Stack grows down, OLD was just below the new
SPECS. We can use that space when the new space
runs out. */
nspecs_max += nspecs_max / 2;
}
}
/* Parse the format specifier. */
nargs += parse_one_spec (f, nargs, &specs[nspecs], &max_ref_arg,
&mbstate);
}
/* Determine the number of arguments the format string consumes. */
nargs = MAX (nargs, max_ref_arg);
/* Allocate memory for the argument descriptions. */
args_type = alloca (nargs * sizeof (int));
memset (args_type, 0, nargs * sizeof (int));
args_value = alloca (nargs * sizeof (union printf_arg));
/* XXX Could do sanity check here: If any element in ARGS_TYPE is
still zero after this loop, format is invalid. For now we
simply use 0 as the value. */
/* Fill in the types of all the arguments. */
for (cnt = 0; cnt < nspecs; ++cnt)
{
/* If the width is determined by an argument this is an int. */
if (specs[cnt].width_arg != -1)
args_type[specs[cnt].width_arg] = PA_INT;
/* If the precision is determined by an argument this is an int. */
if (specs[cnt].prec_arg != -1)
args_type[specs[cnt].prec_arg] = PA_INT;
switch (specs[cnt].ndata_args)
{
case 0: /* No arguments. */
break;
case 1: /* One argument; we already have the type. */
args_type[specs[cnt].data_arg] = specs[cnt].data_arg_type;
break;
default:
/* We have more than one argument for this format spec.
We must call the arginfo function again to determine
all the types. */
(void) (*__printf_arginfo_table[specs[cnt].info.spec])
(&specs[cnt].info,
specs[cnt].ndata_args, &args_type[specs[cnt].data_arg]);
break;
}
}
/* Now we know all the types and the order. Fill in the argument
values. */
for (cnt = 0; cnt < nargs; ++cnt)
switch (args_type[cnt])
{
#define T(tag, mem, type) \
case tag: \
args_value[cnt].mem = va_arg (ap_save, type); \
break
T (PA_CHAR, pa_char, int); /* Promoted. */
T (PA_WCHAR, pa_wchar, wint_t);
T (PA_INT|PA_FLAG_SHORT, pa_short_int, int); /* Promoted. */
T (PA_INT, pa_int, int);
T (PA_INT|PA_FLAG_LONG, pa_long_int, long int);
T (PA_INT|PA_FLAG_LONG_LONG, pa_long_long_int, long long int);
T (PA_FLOAT, pa_float, double); /* Promoted. */
T (PA_DOUBLE, pa_double, double);
T (PA_DOUBLE|PA_FLAG_LONG_DOUBLE, pa_long_double, long double);
T (PA_STRING, pa_string, const char *);
T (PA_WSTRING, pa_wstring, const wchar_t *);
T (PA_POINTER, pa_pointer, void *);
#undef T
default:
if ((args_type[cnt] & PA_FLAG_PTR) != 0)
args_value[cnt].pa_pointer = va_arg (ap_save, void *);
else
args_value[cnt].pa_long_double = 0.0;
break;
}
/* Now walk through all format specifiers and process them. */
for (; (size_t) nspecs_done < nspecs; ++nspecs_done)
{
#undef REF
#define REF(Name) &&do2_##Name
#undef LABEL
#define LABEL(Name) do2_##Name
STEP4_TABLE;
int is_negative;
union
{
unsigned long long int longlong;
unsigned long int word;
} number;
int base;
union printf_arg the_arg;
char *string; /* Pointer to argument string. */
/* Fill variables from values in struct. */
int alt = specs[nspecs_done].info.alt;
int space = specs[nspecs_done].info.space;
int left = specs[nspecs_done].info.left;
int showsign = specs[nspecs_done].info.showsign;
int group = specs[nspecs_done].info.group;
int is_long_double = specs[nspecs_done].info.is_long_double;
int is_short = specs[nspecs_done].info.is_short;
int is_char = specs[nspecs_done].info.is_char;
int is_long = specs[nspecs_done].info.is_long;
int width = specs[nspecs_done].info.width;
int prec = specs[nspecs_done].info.prec;
char pad = specs[nspecs_done].info.pad;
CHAR_T spec = specs[nspecs_done].info.spec;
/* Fill in last information. */
if (specs[nspecs_done].width_arg != -1)
{
/* Extract the field width from an argument. */
specs[nspecs_done].info.width =
args_value[specs[nspecs_done].width_arg].pa_int;
if (specs[nspecs_done].info.width < 0)
/* If the width value is negative left justification is
selected and the value is taken as being positive. */
{
specs[nspecs_done].info.width *= -1;
left = specs[nspecs_done].info.left = 1;
}
width = specs[nspecs_done].info.width;
}
if (specs[nspecs_done].prec_arg != -1)
{
/* Extract the precision from an argument. */
specs[nspecs_done].info.prec =
args_value[specs[nspecs_done].prec_arg].pa_int;
if (specs[nspecs_done].info.prec < 0)
/* If the precision is negative the precision is
omitted. */
specs[nspecs_done].info.prec = -1;
prec = specs[nspecs_done].info.prec;
}
/* Maybe the buffer is too small. */
if (MAX (prec, width) + 32 > sizeof (work_buffer))
workend = alloca (MAX (prec, width) + 32) + (MAX (prec, width) + 31);
/* Process format specifiers. */
while (1)
{
JUMP (spec, step4_jumps);
process_arg ((&specs[nspecs_done]));
LABEL (form_unknown):
{
extern printf_function **__printf_function_table;
int function_done;
printf_function *function;
unsigned int i;
const void **ptr;
function =
(__printf_function_table == NULL ? NULL :
__printf_function_table[specs[nspecs_done].info.spec]);
if (function == NULL)
function = &printf_unknown;
ptr = alloca (specs[nspecs_done].ndata_args
* sizeof (const void *));
/* Fill in an array of pointers to the argument values. */
for (i = 0; i < specs[nspecs_done].ndata_args; ++i)
ptr[i] = &args_value[specs[nspecs_done].data_arg + i];
/* Call the function. */
function_done = (*function) (s, &specs[nspecs_done].info, ptr);
/* If an error occurred we don't have information about #
of chars. */
if (function_done < 0)
{
done = -1;
goto all_done;
}
done += function_done;
}
break;
}
/* Write the following constant string. */
outstring (specs[nspecs_done].end_of_fmt,
specs[nspecs_done].next_fmt
- specs[nspecs_done].end_of_fmt);
}
}
all_done:
/* Unlock the stream. */
#ifdef USE_IN_LIBIO
_IO_funlockfile (s);
#else
__funlockfile (s);
#endif
__libc_cleanup_region_end (0);
return done;
}
#ifdef USE_IN_LIBIO
# undef vfprintf
# ifdef strong_alias
/* This is for glibc. */
strong_alias (_IO_vfprintf, vfprintf);
# else
# if defined __ELF__ || defined __GNU_LIBRARY__
# include <gnu-stabs.h>
# ifdef weak_alias
weak_alias (_IO_vfprintf, vfprintf);
# endif
# endif
# endif
#endif
/* Handle an unknown format specifier. This prints out a canonicalized
representation of the format spec itself. */
static int
printf_unknown (FILE *s, const struct printf_info *info,
const void *const *args)
{
int done = 0;
char work_buffer[MAX (info->width, info->spec) + 32];
char *const workend = &work_buffer[sizeof (work_buffer) - 1];
register char *w;
outchar ('%');
if (info->alt)
outchar ('#');
if (info->group)
outchar ('\'');
if (info->showsign)
outchar ('+');
else if (info->space)
outchar (' ');
if (info->left)
outchar ('-');
if (info->pad == '0')
outchar ('0');
if (info->width != 0)
{
w = _itoa_word (info->width, workend + 1, 10, 0);
while (w <= workend)
outchar (*w++);
}
if (info->prec != -1)
{
outchar ('.');
w = _itoa_word (info->prec, workend + 1, 10, 0);
while (w <= workend)
outchar (*w++);
}
if (info->spec != '\0')
outchar (info->spec);
all_done:
return done;
}
/* Group the digits according to the grouping rules of the current locale.
The interpretation of GROUPING is as in `struct lconv' from <locale.h>. */
static char *
internal_function
group_number (CHAR_T *w, CHAR_T *rear_ptr, const CHAR_T *grouping,
wchar_t thousands_sep)
{
int len;
char *src, *s;
/* We treat all negative values like CHAR_MAX. */
if (*grouping == CHAR_MAX || *grouping <= 0)
/* No grouping should be done. */
return w;
len = *grouping;
/* Copy existing string so that nothing gets overwritten. */
src = (char *) alloca (rear_ptr - w);
s = (char *) __mempcpy (src, w + 1, rear_ptr - w) - 1;
w = rear_ptr;
/* Process all characters in the string. */
while (s >= src)
{
*w-- = *s--;
if (--len == 0 && s >= src)
{
/* A new group begins. */
*w-- = thousands_sep;
len = *grouping++;
if (*grouping == '\0')
/* The previous grouping repeats ad infinitum. */
--grouping;
else if (*grouping == CHAR_MAX
#if CHAR_MIN < 0
|| *grouping < 0
#endif
)
{
/* No further grouping to be done.
Copy the rest of the number. */
do
*w-- = *s--;
while (s >= src);
break;
}
}
}
return w;
}
#ifdef USE_IN_LIBIO
/* Helper "class" for `fprintf to unbuffered': creates a temporary buffer. */
struct helper_file
{
struct _IO_FILE_plus _f;
_IO_FILE *_put_stream;
#ifdef _IO_MTSAFE_IO
_IO_lock_t lock;
#endif
};
static int
_IO_helper_overflow (_IO_FILE *s, int c)
{
_IO_FILE *target = ((struct helper_file*) s)->_put_stream;
int used = s->_IO_write_ptr - s->_IO_write_base;
if (used)
{
_IO_size_t written = _IO_sputn (target, s->_IO_write_base, used);
s->_IO_write_ptr -= written;
}
return PUTC (c, s);
}
static const struct _IO_jump_t _IO_helper_jumps =
{
JUMP_INIT_DUMMY,
JUMP_INIT (finish, _IO_default_finish),
JUMP_INIT (overflow, _IO_helper_overflow),
JUMP_INIT (underflow, _IO_default_underflow),
JUMP_INIT (uflow, _IO_default_uflow),
JUMP_INIT (pbackfail, _IO_default_pbackfail),
JUMP_INIT (xsputn, _IO_default_xsputn),
JUMP_INIT (xsgetn, _IO_default_xsgetn),
JUMP_INIT (seekoff, _IO_default_seekoff),
JUMP_INIT (seekpos, _IO_default_seekpos),
JUMP_INIT (setbuf, _IO_default_setbuf),
JUMP_INIT (sync, _IO_default_sync),
JUMP_INIT (doallocate, _IO_default_doallocate),
JUMP_INIT (read, _IO_default_read),
JUMP_INIT (write, _IO_default_write),
JUMP_INIT (seek, _IO_default_seek),
JUMP_INIT (close, _IO_default_close),
JUMP_INIT (stat, _IO_default_stat)
};
static int
internal_function
buffered_vfprintf (register _IO_FILE *s, const CHAR_T *format,
_IO_va_list args)
{
char buf[_IO_BUFSIZ];
struct helper_file helper;
register _IO_FILE *hp = (_IO_FILE *) &helper;
int result, to_flush;
/* Initialize helper. */
helper._put_stream = s;
hp->_IO_write_base = buf;
hp->_IO_write_ptr = buf;
hp->_IO_write_end = buf + sizeof buf;
hp->_IO_file_flags = _IO_MAGIC|_IO_NO_READS;
#if _IO_JUMPS_OFFSET
hp->_vtable_offset = 0;
#endif
#ifdef _IO_MTSAFE_IO
hp->_lock = &helper.lock;
__libc_lock_init (*hp->_lock);
#endif
_IO_JUMPS (hp) = (struct _IO_jump_t *) &_IO_helper_jumps;
/* Now print to helper instead. */
result = _IO_vfprintf (hp, format, args);
/* Now flush anything from the helper to the S. */
if ((to_flush = hp->_IO_write_ptr - hp->_IO_write_base) > 0)
{
if ((int) _IO_sputn (s, hp->_IO_write_base, to_flush) != to_flush)
return -1;
}
return result;
}
#else /* !USE_IN_LIBIO */
static int
internal_function
buffered_vfprintf (register FILE *s, const CHAR_T *format, va_list args)
{
char buf[BUFSIZ];
int result;
s->__bufp = s->__buffer = buf;
s->__bufsize = sizeof buf;
s->__put_limit = s->__buffer + s->__bufsize;
s->__get_limit = s->__buffer;
/* Now use buffer to print. */
result = vfprintf (s, format, args);
if (fflush (s) == EOF)
result = -1;
s->__buffer = s->__bufp = s->__get_limit = s->__put_limit = NULL;
s->__bufsize = 0;
return result;
}
/* Pads string with given number of a specified character.
This code is taken from iopadn.c of the GNU I/O library. */
#define PADSIZE 16
static const CHAR_T blanks[PADSIZE] =
{ L_(' '), L_(' '), L_(' '), L_(' '), L_(' '), L_(' '), L_(' '), L_(' '),
L_(' '), L_(' '), L_(' '), L_(' '), L_(' '), L_(' '), L_(' '), L_(' ') };
static const CHAR_T zeroes[PADSIZE] =
{ L_('0'), L_('0'), L_('0'), L_('0'), L_('0'), L_('0'), L_('0'), L_('0'),
L_('0'), L_('0'), L_('0'), L_('0'), L_('0'), L_('0'), L_('0'), L_('0') };
ssize_t
#ifndef COMPILE_WPRINTF
__printf_pad (FILE *s, char pad, size_t count)
#else
__wprintf_pad (FILE *s, wchar_t pad, size_t count)
#endif
{
const CHAR_T *padptr;
register size_t i;
padptr = pad == L_(' ') ? blanks : zeroes;
for (i = count; i >= PADSIZE; i -= PADSIZE)
if (PUT (s, padptr, PADSIZE) != PADSIZE)
return -1;
if (i > 0)
if (PUT (s, padptr, i) != i)
return -1;
return count;
}
#undef PADSIZE
#endif /* USE_IN_LIBIO */
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