diff options
Diffstat (limited to 'stdio-common/vfprintf-internal.c')
| -rw-r--r-- | stdio-common/vfprintf-internal.c | 2364 |
1 files changed, 2364 insertions, 0 deletions
diff --git a/stdio-common/vfprintf-internal.c b/stdio-common/vfprintf-internal.c new file mode 100644 index 0000000000..b0c86e99bd --- /dev/null +++ b/stdio-common/vfprintf-internal.c @@ -0,0 +1,2364 @@ +/* Copyright (C) 1991-2018 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 Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <array_length.h> +#include <ctype.h> +#include <limits.h> +#include <printf.h> +#include <stdarg.h> +#include <stdint.h> +#include <stdlib.h> +#include <string.h> +#include <errno.h> +#include <wchar.h> +#include <libc-lock.h> +#include <sys/param.h> +#include <_itoa.h> +#include <locale/localeinfo.h> +#include <stdio.h> +#include <scratch_buffer.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. */ + +#include <libioP.h> + +#ifdef COMPILE_WPRINTF +#include <wctype.h> +#endif + +/* In some cases we need extra space for all the output which is not + counted in the width of the string. We assume 32 characters is + enough. */ +#define EXTSIZ 32 +#define ARGCHECK(S, Format) \ + do \ + { \ + /* Check file argument for consistence. */ \ + CHECK_FILE (S, -1); \ + if (S->_flags & _IO_NO_WRITES) \ + { \ + S->_flags |= _IO_ERR_SEEN; \ + __set_errno (EBADF); \ + return -1; \ + } \ + if (Format == NULL) \ + { \ + __set_errno (EINVAL); \ + return -1; \ + } \ + } while (0) +#define UNBUFFERED_P(S) ((S)->_flags & _IO_UNBUFFERED) + +#define done_add(val) \ + do { \ + unsigned int _val = val; \ + assert ((unsigned int) done < (unsigned int) INT_MAX); \ + if (__glibc_unlikely (INT_MAX - done < _val)) \ + { \ + done = -1; \ + __set_errno (EOVERFLOW); \ + goto all_done; \ + } \ + done += _val; \ + } while (0) + +#ifndef COMPILE_WPRINTF +# define vfprintf __vfprintf_internal +# define CHAR_T char +# define UCHAR_T unsigned char +# define INT_T int +typedef const char *THOUSANDS_SEP_T; +# define L_(Str) Str +# define ISDIGIT(Ch) ((unsigned int) ((Ch) - '0') < 10) +# define STR_LEN(Str) strlen (Str) + +# define PUT(F, S, N) _IO_sputn ((F), (S), (N)) +# define PAD(Padchar) \ + do { \ + if (width > 0) \ + { \ + ssize_t written = _IO_padn (s, (Padchar), width); \ + if (__glibc_unlikely (written != width)) \ + { \ + done = -1; \ + goto all_done; \ + } \ + done_add (written); \ + } \ + } while (0) +# define PUTC(C, F) _IO_putc_unlocked (C, F) +# define ORIENT if (_IO_vtable_offset (s) == 0 && _IO_fwide (s, -1) != -1)\ + return -1 +#else +# define vfprintf __vfwprintf_internal +# define CHAR_T wchar_t +/* This is a hack!!! There should be a type uwchar_t. */ +# define UCHAR_T unsigned int /* uwchar_t */ +# define INT_T wint_t +typedef wchar_t THOUSANDS_SEP_T; +# define L_(Str) L##Str +# define ISDIGIT(Ch) ((unsigned int) ((Ch) - L'0') < 10) +# define STR_LEN(Str) __wcslen (Str) + +# include <_itowa.h> + +# define PUT(F, S, N) _IO_sputn ((F), (S), (N)) +# define PAD(Padchar) \ + do { \ + if (width > 0) \ + { \ + ssize_t written = _IO_wpadn (s, (Padchar), width); \ + if (__glibc_unlikely (written != width)) \ + { \ + done = -1; \ + goto all_done; \ + } \ + done_add (written); \ + } \ + } while (0) +# define PUTC(C, F) _IO_putwc_unlocked (C, F) +# define ORIENT if (_IO_fwide (s, 1) != 1) return -1 + +# undef _itoa +# define _itoa(Val, Buf, Base, Case) _itowa (Val, Buf, Base, Case) +# define _itoa_word(Val, Buf, Base, Case) _itowa_word (Val, Buf, Base, Case) +# undef EOF +# define EOF WEOF +#endif + +#include "_i18n_number.h" + +/* Include the shared code for parsing the format string. */ +#include "printf-parse.h" + + +#define outchar(Ch) \ + do \ + { \ + const INT_T outc = (Ch); \ + if (PUTC (outc, s) == EOF || done == INT_MAX) \ + { \ + done = -1; \ + goto all_done; \ + } \ + ++done; \ + } \ + while (0) + +#define outstring(String, Len) \ + do \ + { \ + assert ((size_t) done <= (size_t) INT_MAX); \ + if ((size_t) PUT (s, (String), (Len)) != (size_t) (Len)) \ + { \ + done = -1; \ + goto all_done; \ + } \ + if (__glibc_unlikely (INT_MAX - done < (Len))) \ + { \ + done = -1; \ + __set_errno (EOVERFLOW); \ + goto all_done; \ + } \ + done += (Len); \ + } \ + while (0) + +/* For handling long_double and longlong we use the same flag. If + `long' and `long long' are effectively the same type define it to + zero. */ +#if LONG_MAX == LONG_LONG_MAX +# define is_longlong 0 +#else +# define is_longlong is_long_double +#endif + +/* If `long' and `int' is effectively the same type we don't have to + handle `long separately. */ +#if INT_MAX == LONG_MAX +# define is_long_num 0 +#else +# define is_long_num is_long +#endif + + +/* Global constants. */ +static const CHAR_T null[] = L_("(null)"); + +/* Size of the work_buffer variable (in characters, not bytes. */ +enum { WORK_BUFFER_SIZE = 1000 / sizeof (CHAR_T) }; + +/* This table maps a character into a number representing a class. In + each step there is a destination label for each class. */ +static const uint8_t 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, /* F */ 19, /* 'G' */ 19, + 0, /* 'I' */ 29, 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) < L_(' ') || (Ch) > L_('z')) +#define CHAR_CLASS(Ch) (jump_table[(INT_T) (Ch) - L_(' ')]) +#define LABEL(Name) do_##Name +#ifdef SHARED + /* 'int' is enough and it saves some space on 64 bit systems. */ +# define JUMP_TABLE_TYPE const int +# define JUMP_TABLE_BASE_LABEL do_form_unknown +# define REF(Name) &&do_##Name - &&JUMP_TABLE_BASE_LABEL +# define JUMP(ChExpr, table) \ + do \ + { \ + int offset; \ + void *ptr; \ + spec = (ChExpr); \ + offset = NOT_IN_JUMP_RANGE (spec) ? REF (form_unknown) \ + : table[CHAR_CLASS (spec)]; \ + ptr = &&JUMP_TABLE_BASE_LABEL + offset; \ + goto *ptr; \ + } \ + while (0) +#else +# define JUMP_TABLE_TYPE const void *const +# define REF(Name) &&do_##Name +# 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) +#endif + +#define STEP0_3_TABLE \ + /* Step 0: at the beginning. */ \ + static JUMP_TABLE_TYPE step0_jumps[30] = \ + { \ + 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', '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' */ \ + REF (flag_i18n), /* for 'I' */ \ + }; \ + /* Step 1: after processing width. */ \ + static JUMP_TABLE_TYPE step1_jumps[30] = \ + { \ + 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', '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' */ \ + REF (form_unknown) /* for 'I' */ \ + }; \ + /* Step 2: after processing precision. */ \ + static JUMP_TABLE_TYPE step2_jumps[30] = \ + { \ + 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', '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' */ \ + REF (form_unknown) /* for 'I' */ \ + }; \ + /* Step 3a: after processing first 'h' modifier. */ \ + static JUMP_TABLE_TYPE step3a_jumps[30] = \ + { \ + 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', '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' */ \ + REF (form_unknown) /* for 'I' */ \ + }; \ + /* Step 3b: after processing first 'l' modifier. */ \ + static JUMP_TABLE_TYPE step3b_jumps[30] = \ + { \ + 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', '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' */ \ + REF (form_unknown) /* for 'I' */ \ + } + +#define STEP4_TABLE \ + /* Step 4: processing format specifier. */ \ + static JUMP_TABLE_TYPE step4_jumps[30] = \ + { \ + 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', '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' */ \ + REF (form_unknown) /* for 'I' */ \ + } + + +#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 (L_('%')); \ + 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_num) \ + signed_number = va_arg (ap, long int); \ + else if (is_char) \ + signed_number = (signed char) va_arg (ap, unsigned int); \ + else if (!is_short) \ + signed_number = va_arg (ap, int); \ + else \ + signed_number = (short int) va_arg (ap, unsigned int); \ + } \ + else \ + if (is_long_num) \ + signed_number = args_value[fspec->data_arg].pa_long_int; \ + else if (is_char) \ + signed_number = (signed char) \ + args_value[fspec->data_arg].pa_u_int; \ + else if (!is_short) \ + signed_number = args_value[fspec->data_arg].pa_int; \ + else \ + signed_number = (short int) \ + args_value[fspec->data_arg].pa_u_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 = L_(' '); \ + \ + /* 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 = L_('0'); \ + } \ + else \ + { \ + /* Put the number in WORK. */ \ + string = _itoa (number.longlong, workend, base, \ + spec == L_('X')); \ + if (group && grouping) \ + string = group_number (work_buffer, string, workend, \ + grouping, thousands_sep); \ + if (use_outdigits && base == 10) \ + string = _i18n_number_rewrite (string, workend, workend); \ + } \ + /* Simplify further test for num != 0. */ \ + number.word = number.longlong != 0; \ + } \ + else \ + { \ + if (fspec == NULL) \ + { \ + if (is_long_num) \ + number.word = va_arg (ap, unsigned long int); \ + else if (is_char) \ + number.word = (unsigned char) va_arg (ap, unsigned 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_num) \ + 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_u_int; \ + 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_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 = L_(' '); \ + \ + /* 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 = L_('0'); \ + } \ + else \ + { \ + /* Put the number in WORK. */ \ + string = _itoa_word (number.word, workend, base, \ + spec == L_('X')); \ + if (group && grouping) \ + string = group_number (work_buffer, string, workend, \ + grouping, thousands_sep); \ + if (use_outdigits && base == 10) \ + string = _i18n_number_rewrite (string, workend, workend); \ + } \ + } \ + \ + if (prec <= workend - string && number.word != 0 && alt && base == 8) \ + /* Add octal marker. */ \ + *--string = L_('0'); \ + \ + prec = MAX (0, prec - (workend - string)); \ + \ + if (!left) \ + { \ + width -= workend - string + prec; \ + \ + if (number.word != 0 && alt && base == 16) \ + /* Account for 0X hex marker. */ \ + width -= 2; \ + \ + if (is_negative || showsign || space) \ + --width; \ + \ + if (pad == L_(' ')) \ + { \ + PAD (L_(' ')); \ + width = 0; \ + } \ + \ + if (is_negative) \ + outchar (L_('-')); \ + else if (showsign) \ + outchar (L_('+')); \ + else if (space) \ + outchar (L_(' ')); \ + \ + if (number.word != 0 && alt && base == 16) \ + { \ + outchar (L_('0')); \ + outchar (spec); \ + } \ + \ + width += prec; \ + PAD (L_('0')); \ + \ + outstring (string, workend - string); \ + \ + break; \ + } \ + else \ + { \ + if (is_negative) \ + { \ + outchar (L_('-')); \ + --width; \ + } \ + else if (showsign) \ + { \ + outchar (L_('+')); \ + --width; \ + } \ + else if (space) \ + { \ + outchar (L_(' ')); \ + --width; \ + } \ + \ + if (number.word != 0 && alt && base == 16) \ + { \ + outchar (L_('0')); \ + outchar (spec); \ + width -= 2; \ + } \ + \ + width -= workend - string + prec; \ + \ + if (prec > 0) \ + { \ + int temp = width; \ + width = prec; \ + PAD (L_('0')); \ + width = temp; \ + } \ + \ + outstring (string, workend - string); \ + \ + PAD (L_(' ')); \ + break; \ + } \ + \ + LABEL (form_float): \ + { \ + /* Floating-point number. This is handled by printf_fp.c. */ \ + const void *ptr; \ + int function_done; \ + \ + if (fspec == NULL) \ + { \ + if (__glibc_unlikely ((mode_flags & PRINTF_LDBL_IS_DBL) != 0)) \ + is_long_double = 0; \ + \ + 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, \ + .i18n = use_outdigits, \ + .wide = sizeof (CHAR_T) != 1, \ + .is_binary128 = 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]; \ + if (__glibc_unlikely ((mode_flags & PRINTF_LDBL_IS_DBL) != 0)) \ + { \ + fspec->data_arg_type = PA_DOUBLE; \ + fspec->info.is_long_double = 0; \ + } \ + /* Not supported by *printf functions. */ \ + fspec->info.is_binary128 = 0; \ + \ + function_done = __printf_fp (s, &fspec->info, &ptr); \ + } \ + \ + if (function_done < 0) \ + { \ + /* Error in print handler; up to handler to set errno. */ \ + done = -1; \ + goto all_done; \ + } \ + \ + done_add (function_done); \ + } \ + break; \ + \ + LABEL (form_floathex): \ + { \ + /* Floating point number printed as hexadecimal number. */ \ + const void *ptr; \ + int function_done; \ + \ + if (fspec == NULL) \ + { \ + if (__glibc_unlikely ((mode_flags & PRINTF_LDBL_IS_DBL) != 0)) \ + is_long_double = 0; \ + \ + 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, \ + .wide = sizeof (CHAR_T) != 1, \ + .is_binary128 = 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]; \ + if (__glibc_unlikely ((mode_flags & PRINTF_LDBL_IS_DBL) != 0)) \ + fspec->info.is_long_double = 0; \ + /* Not supported by *printf functions. */ \ + fspec->info.is_binary128 = 0; \ + \ + function_done = __printf_fphex (s, &fspec->info, &ptr); \ + } \ + \ + if (function_done < 0) \ + { \ + /* Error in print handler; up to handler to set errno. */ \ + done = -1; \ + goto all_done; \ + } \ + \ + done_add (function_done); \ + } \ + 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 = L_('x'); \ + goto LABEL (number); \ + } \ + else \ + { \ + /* Write "(nil)" for a nil pointer. */ \ + string = (CHAR_T *) L_("(nil)"); \ + /* Make sure the full string "(nil)" is printed. */ \ + if (prec < 5) \ + prec = 5; \ + /* This is a wide string iff compiling wprintf. */ \ + is_long = sizeof (CHAR_T) > 1; \ + goto LABEL (print_string); \ + } \ + } \ + /* NOTREACHED */ \ + \ + LABEL (form_number): \ + if ((mode_flags & PRINTF_FORTIFY) != 0) \ + { \ + if (! readonly_format) \ + { \ + extern int __readonly_area (const void *, size_t) \ + attribute_hidden; \ + readonly_format \ + = __readonly_area (format, ((STR_LEN (format) + 1) \ + * sizeof (CHAR_T))); \ + } \ + if (readonly_format < 0) \ + __libc_fatal ("*** %n in writable segment detected ***\n"); \ + } \ + /* Answer the count of characters written. */ \ + if (fspec == NULL) \ + { \ + if (is_longlong) \ + *(long long int *) va_arg (ap, void *) = done; \ + else if (is_long_num) \ + *(long int *) va_arg (ap, void *) = done; \ + else if (is_char) \ + *(char *) 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_num) \ + *(long int *) args_value[fspec->data_arg].pa_pointer = done; \ + else if (is_char) \ + *(char *) 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_T *) __strerror_r (save_errno, (char *) work_buffer, \ + WORK_BUFFER_SIZE * sizeof (CHAR_T)); \ + is_long = 0; /* This is no wide-char string. */ \ + goto LABEL (print_string) + +#ifdef COMPILE_WPRINTF +# define process_string_arg(fspec) \ + LABEL (form_character): \ + /* Character. */ \ + if (is_long) \ + goto LABEL (form_wcharacter); \ + --width; /* Account for the character itself. */ \ + if (!left) \ + PAD (L' '); \ + if (fspec == NULL) \ + outchar (__btowc ((unsigned char) va_arg (ap, int))); /* Promoted. */ \ + else \ + outchar (__btowc ((unsigned char) \ + args_value[fspec->data_arg].pa_int)); \ + if (left) \ + PAD (L' '); \ + break; \ + \ + LABEL (form_wcharacter): \ + { \ + /* Wide character. */ \ + --width; \ + if (!left) \ + PAD (L' '); \ + if (fspec == NULL) \ + outchar (va_arg (ap, wchar_t)); \ + else \ + outchar (args_value[fspec->data_arg].pa_wchar); \ + if (left) \ + PAD (L' '); \ + } \ + break; \ + \ + LABEL (form_string): \ + { \ + size_t len; \ + int string_malloced; \ + \ + /* The string argument could in fact be `char *' or `wchar_t *'. \ + But this should not make a difference here. */ \ + if (fspec == NULL) \ + string = (CHAR_T *) va_arg (ap, const wchar_t *); \ + else \ + string = (CHAR_T *) args_value[fspec->data_arg].pa_wstring; \ + \ + /* Entry point for printing other strings. */ \ + LABEL (print_string): \ + \ + string_malloced = 0; \ + if (string == NULL) \ + { \ + /* Write "(null)" if there's space. */ \ + if (prec == -1 || prec >= (int) array_length (null) - 1) \ + { \ + string = (CHAR_T *) null; \ + len = array_length (null) - 1; \ + } \ + else \ + { \ + string = (CHAR_T *) L""; \ + len = 0; \ + } \ + } \ + else if (!is_long && spec != L_('S')) \ + { \ + /* This is complicated. We have to transform the multibyte \ + string into a wide character string. */ \ + const char *mbs = (const char *) string; \ + mbstate_t mbstate; \ + \ + len = prec != -1 ? __strnlen (mbs, (size_t) prec) : strlen (mbs); \ + \ + /* Allocate dynamically an array which definitely is long \ + enough for the wide character version. Each byte in the \ + multi-byte string can produce at most one wide character. */ \ + if (__glibc_unlikely (len > SIZE_MAX / sizeof (wchar_t))) \ + { \ + __set_errno (EOVERFLOW); \ + done = -1; \ + goto all_done; \ + } \ + else if (__libc_use_alloca (len * sizeof (wchar_t))) \ + string = (CHAR_T *) alloca (len * sizeof (wchar_t)); \ + else if ((string = (CHAR_T *) malloc (len * sizeof (wchar_t))) \ + == NULL) \ + { \ + done = -1; \ + goto all_done; \ + } \ + else \ + string_malloced = 1; \ + \ + memset (&mbstate, '\0', sizeof (mbstate_t)); \ + len = __mbsrtowcs (string, &mbs, len, &mbstate); \ + if (len == (size_t) -1) \ + { \ + /* Illegal multibyte character. */ \ + done = -1; \ + goto all_done; \ + } \ + } \ + else \ + { \ + if (prec != -1) \ + /* Search for the end of the string, but don't search past \ + the length specified by the precision. */ \ + len = __wcsnlen (string, prec); \ + else \ + len = __wcslen (string); \ + } \ + \ + if ((width -= len) < 0) \ + { \ + outstring (string, len); \ + break; \ + } \ + \ + if (!left) \ + PAD (L' '); \ + outstring (string, len); \ + if (left) \ + PAD (L' '); \ + if (__glibc_unlikely (string_malloced)) \ + free (string); \ + } \ + break; +#else +# define process_string_arg(fspec) \ + 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_int); \ + if (left) \ + PAD (' '); \ + break; \ + \ + LABEL (form_wcharacter): \ + { \ + /* Wide character. */ \ + char buf[MB_LEN_MAX]; \ + mbstate_t mbstate; \ + size_t len; \ + \ + memset (&mbstate, '\0', sizeof (mbstate_t)); \ + len = __wcrtomb (buf, (fspec == NULL ? va_arg (ap, wchar_t) \ + : args_value[fspec->data_arg].pa_wchar), \ + &mbstate); \ + if (len == (size_t) -1) \ + { \ + /* Something went wrong during the conversion. Bail out. */ \ + done = -1; \ + goto all_done; \ + } \ + width -= len; \ + if (!left) \ + PAD (' '); \ + outstring (buf, len); \ + if (left) \ + PAD (' '); \ + } \ + break; \ + \ + LABEL (form_string): \ + { \ + size_t len; \ + int string_malloced; \ + \ + /* 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): \ + \ + string_malloced = 0; \ + 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 (in bytes) 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)); \ + \ + if (prec >= 0) \ + { \ + /* The string `s2' might not be NUL terminated. */ \ + if (__libc_use_alloca (prec)) \ + string = (char *) alloca (prec); \ + else if ((string = (char *) malloc (prec)) == NULL) \ + { \ + done = -1; \ + goto all_done; \ + } \ + else \ + string_malloced = 1; \ + len = __wcsrtombs (string, &s2, prec, &mbstate); \ + } \ + else \ + { \ + len = __wcsrtombs (NULL, &s2, 0, &mbstate); \ + if (len != (size_t) -1) \ + { \ + assert (__mbsinit (&mbstate)); \ + s2 = (const wchar_t *) string; \ + if (__libc_use_alloca (len + 1)) \ + string = (char *) alloca (len + 1); \ + else if ((string = (char *) malloc (len + 1)) == NULL) \ + { \ + done = -1; \ + goto all_done; \ + } \ + else \ + string_malloced = 1; \ + (void) __wcsrtombs (string, &s2, len + 1, &mbstate); \ + } \ + } \ + \ + if (len == (size_t) -1) \ + { \ + /* Illegal wide-character string. */ \ + done = -1; \ + goto all_done; \ + } \ + } \ + \ + if ((width -= len) < 0) \ + { \ + outstring (string, len); \ + break; \ + } \ + \ + if (!left) \ + PAD (' '); \ + outstring (string, len); \ + if (left) \ + PAD (' '); \ + if (__glibc_unlikely (string_malloced)) \ + free (string); \ + } \ + break; +#endif + +/* Helper function to provide temporary buffering for unbuffered streams. */ +static int buffered_vfprintf (FILE *stream, const CHAR_T *fmt, va_list, + unsigned int) + __THROW __attribute__ ((noinline)); + +/* Handle positional format specifiers. */ +static int printf_positional (FILE *s, + const CHAR_T *format, int readonly_format, + va_list ap, va_list *ap_savep, int done, + int nspecs_done, const UCHAR_T *lead_str_end, + CHAR_T *work_buffer, int save_errno, + const char *grouping, + THOUSANDS_SEP_T thousands_sep, + unsigned int mode_flags); + +/* Handle unknown format specifier. */ +static int printf_unknown (FILE *, const struct printf_info *, + const void *const *) __THROW; + +/* Group digits of number string. */ +static CHAR_T *group_number (CHAR_T *, CHAR_T *, CHAR_T *, const char *, + THOUSANDS_SEP_T); + +/* The function itself. */ +int +vfprintf (FILE *s, const CHAR_T *format, va_list ap, unsigned int mode_flags) +{ + /* The character used as thousands separator. */ + THOUSANDS_SEP_T thousands_sep = 0; + + /* 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_T work_buffer[WORK_BUFFER_SIZE]; + CHAR_T *workstart = NULL; + CHAR_T *workend; + + /* 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; + + /* 1 if format is in read-only memory, -1 if it is in writable memory, + 0 if unknown. */ + int readonly_format = 0; + + /* Temporarily honor environmental settings. */ + if (__ldbl_is_dbl) + mode_flags |= PRINTF_LDBL_IS_DBL; + if (s->_flags2 & _IO_FLAGS2_FORTIFY) + mode_flags |= PRINTF_FORTIFY; + + /* Orient the stream. */ +#ifdef ORIENT + ORIENT; +#endif + + /* Sanity check of arguments. */ + ARGCHECK (s, format); + +#ifdef ORIENT + /* Check for correct orientation. */ + if (_IO_vtable_offset (s) == 0 && + _IO_fwide (s, sizeof (CHAR_T) == 1 ? -1 : 1) + != (sizeof (CHAR_T) == 1 ? -1 : 1)) + /* The stream is already oriented otherwise. */ + return EOF; +#endif + + 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, mode_flags); + + /* 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; + +#ifdef COMPILE_WPRINTF + /* Find the first format specifier. */ + f = lead_str_end = __find_specwc ((const UCHAR_T *) format); +#else + /* Find the first format specifier. */ + f = lead_str_end = __find_specmb ((const UCHAR_T *) format); +#endif + + /* Lock stream. */ + _IO_cleanup_region_start ((void (*) (void *)) &_IO_funlockfile, s); + _IO_flockfile (s); + + /* 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; + + /* Use the slow path in case any printf handler is registered. */ + if (__glibc_unlikely (__printf_function_table != NULL + || __printf_modifier_table != NULL + || __printf_va_arg_table != NULL)) + goto do_positional; + + /* Process whole format string. */ + do + { + 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_T *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 short int. */ + int is_long = 0; /* Argument is long 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. */ + /* This flag is set by the 'I' modifier and selects the use of the + `outdigits' as determined by the current locale. */ + int use_outdigits = 0; + UCHAR_T pad = L_(' ');/* Padding character. */ + CHAR_T spec; + + workstart = NULL; + workend = work_buffer + WORK_BUFFER_SIZE; + + /* 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; + + if (grouping == (const char *) -1) + { +#ifdef COMPILE_WPRINTF + thousands_sep = _NL_CURRENT_WORD (LC_NUMERIC, + _NL_NUMERIC_THOUSANDS_SEP_WC); +#else + thousands_sep = _NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP); +#endif + + grouping = _NL_CURRENT (LC_NUMERIC, GROUPING); + if (*grouping == '\0' || *grouping == CHAR_MAX +#ifdef COMPILE_WPRINTF + || thousands_sep == L'\0' +#else + || *thousands_sep == '\0' +#endif + ) + grouping = NULL; + } + JUMP (*++f, step0_jumps); + + LABEL (flag_i18n): + use_outdigits = 1; + JUMP (*++f, step0_jumps); + + /* Get width from argument. */ + LABEL (width_asterics): + { + const UCHAR_T *tmp; /* Temporary value. */ + + tmp = ++f; + if (ISDIGIT (*tmp)) + { + int pos = read_int (&tmp); + + if (pos == -1) + { + __set_errno (EOVERFLOW); + done = -1; + goto all_done; + } + + if (pos && *tmp == L_('$')) + /* The width comes from a positional parameter. */ + goto do_positional; + } + width = va_arg (ap, int); + + /* Negative width means left justified. */ + if (width < 0) + { + width = -width; + pad = L_(' '); + left = 1; + } + + if (__glibc_unlikely (width >= INT_MAX / sizeof (CHAR_T) - EXTSIZ)) + { + __set_errno (EOVERFLOW); + done = -1; + goto all_done; + } + + if (width >= WORK_BUFFER_SIZE - EXTSIZ) + { + /* We have to use a special buffer. */ + size_t needed = ((size_t) width + EXTSIZ) * sizeof (CHAR_T); + if (__libc_use_alloca (needed)) + workend = (CHAR_T *) alloca (needed) + width + EXTSIZ; + else + { + workstart = (CHAR_T *) malloc (needed); + if (workstart == NULL) + { + done = -1; + goto all_done; + } + workend = workstart + width + EXTSIZ; + } + } + } + JUMP (*f, step1_jumps); + + /* Given width in format string. */ + LABEL (width): + width = read_int (&f); + + if (__glibc_unlikely (width == -1 + || width >= INT_MAX / sizeof (CHAR_T) - EXTSIZ)) + { + __set_errno (EOVERFLOW); + done = -1; + goto all_done; + } + + if (width >= WORK_BUFFER_SIZE - EXTSIZ) + { + /* We have to use a special buffer. */ + size_t needed = ((size_t) width + EXTSIZ) * sizeof (CHAR_T); + if (__libc_use_alloca (needed)) + workend = (CHAR_T *) alloca (needed) + width + EXTSIZ; + else + { + workstart = (CHAR_T *) malloc (needed); + if (workstart == NULL) + { + done = -1; + goto all_done; + } + workend = workstart + width + EXTSIZ; + } + } + if (*f == L_('$')) + /* 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)) + { + int pos = read_int (&tmp); + + if (pos == -1) + { + __set_errno (EOVERFLOW); + done = -1; + goto all_done; + } + + if (pos && *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); + + /* The precision was specified in this case as an extremely + large positive value. */ + if (prec == -1) + { + __set_errno (EOVERFLOW); + done = -1; + goto all_done; + } + } + else + prec = 0; + if (prec > width && prec > WORK_BUFFER_SIZE - EXTSIZ) + { + /* Deallocate any previously allocated buffer because it is + too small. */ + if (__glibc_unlikely (workstart != NULL)) + free (workstart); + workstart = NULL; + if (__glibc_unlikely (prec >= INT_MAX / sizeof (CHAR_T) - EXTSIZ)) + { + __set_errno (EOVERFLOW); + done = -1; + goto all_done; + } + size_t needed = ((size_t) prec + EXTSIZ) * sizeof (CHAR_T); + + if (__libc_use_alloca (needed)) + workend = (CHAR_T *) alloca (needed) + prec + EXTSIZ; + else + { + workstart = (CHAR_T *) malloc (needed); + if (workstart == NULL) + { + done = -1; + goto all_done; + } + workend = workstart + prec + EXTSIZ; + } + } + 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; + is_long = 1; + JUMP (*++f, step4_jumps); + + LABEL (mod_size_t): + is_long_double = sizeof (size_t) > sizeof (unsigned long int); + is_long = sizeof (size_t) > sizeof (unsigned int); + JUMP (*++f, step4_jumps); + + LABEL (mod_ptrdiff_t): + is_long_double = sizeof (ptrdiff_t) > sizeof (unsigned long int); + is_long = sizeof (ptrdiff_t) > sizeof (unsigned int); + JUMP (*++f, step4_jumps); + + LABEL (mod_intmax_t): + is_long_double = 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)); + process_string_arg (((struct printf_spec *) NULL)); + + LABEL (form_unknown): + if (spec == L_('\0')) + { + /* The format string ended before the specifier is complete. */ + __set_errno (EINVAL); + 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; + + if (__glibc_unlikely (workstart != NULL)) + free (workstart); + workstart = NULL; + + /* Look for next format specifier. */ +#ifdef COMPILE_WPRINTF + f = __find_specwc ((end_of_spec = ++f)); +#else + f = __find_specmb ((end_of_spec = ++f)); +#endif + + /* Write the following constant string. */ + outstring (end_of_spec, f - end_of_spec); + } + while (*f != L_('\0')); + + /* Unlock stream and return. */ + goto all_done; + + /* Hand off processing for positional parameters. */ +do_positional: + if (__glibc_unlikely (workstart != NULL)) + { + free (workstart); + workstart = NULL; + } + done = printf_positional (s, format, readonly_format, ap, &ap_save, + done, nspecs_done, lead_str_end, work_buffer, + save_errno, grouping, thousands_sep, mode_flags); + + all_done: + if (__glibc_unlikely (workstart != NULL)) + free (workstart); + /* Unlock the stream. */ + _IO_funlockfile (s); + _IO_cleanup_region_end (0); + + return done; +} + +static int +printf_positional (FILE *s, const CHAR_T *format, int readonly_format, + va_list ap, va_list *ap_savep, int done, int nspecs_done, + const UCHAR_T *lead_str_end, + CHAR_T *work_buffer, int save_errno, + const char *grouping, THOUSANDS_SEP_T thousands_sep, + unsigned int mode_flags) +{ + /* For positional argument handling. */ + struct scratch_buffer specsbuf; + scratch_buffer_init (&specsbuf); + struct printf_spec *specs = specsbuf.data; + size_t specs_limit = specsbuf.length / sizeof (specs[0]); + + /* Used as a backing store for args_value, args_size, args_type + below. */ + struct scratch_buffer argsbuf; + scratch_buffer_init (&argsbuf); + + /* Array with information about the needed arguments. This has to + be dynamically extensible. */ + size_t nspecs = 0; + + /* 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; + + /* 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; + + CHAR_T *workstart = NULL; + + if (grouping == (const char *) -1) + { +#ifdef COMPILE_WPRINTF + thousands_sep = _NL_CURRENT_WORD (LC_NUMERIC, + _NL_NUMERIC_THOUSANDS_SEP_WC); +#else + thousands_sep = _NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP); +#endif + + grouping = _NL_CURRENT (LC_NUMERIC, GROUPING); + if (*grouping == '\0' || *grouping == CHAR_MAX) + grouping = NULL; + } + + for (const UCHAR_T *f = lead_str_end; *f != L_('\0'); + f = specs[nspecs++].next_fmt) + { + if (nspecs == specs_limit) + { + if (!scratch_buffer_grow_preserve (&specsbuf)) + { + done = -1; + goto all_done; + } + specs = specsbuf.data; + specs_limit = specsbuf.length / sizeof (specs[0]); + } + + /* Parse the format specifier. */ +#ifdef COMPILE_WPRINTF + nargs += __parse_one_specwc (f, nargs, &specs[nspecs], &max_ref_arg); +#else + nargs += __parse_one_specmb (f, nargs, &specs[nspecs], &max_ref_arg); +#endif + } + + /* Determine the number of arguments the format string consumes. */ + nargs = MAX (nargs, max_ref_arg); + + union printf_arg *args_value; + int *args_size; + int *args_type; + { + /* Calculate total size needed to represent a single argument + across all three argument-related arrays. */ + size_t bytes_per_arg + = sizeof (*args_value) + sizeof (*args_size) + sizeof (*args_type); + if (!scratch_buffer_set_array_size (&argsbuf, nargs, bytes_per_arg)) + { + done = -1; + goto all_done; + } + args_value = argsbuf.data; + /* Set up the remaining two arrays to each point past the end of + the prior array, since space for all three has been allocated + now. */ + args_size = &args_value[nargs].pa_int; + args_type = &args_size[nargs]; + memset (args_type, (mode_flags & PRINTF_FORTIFY) != 0 ? '\xff' : '\0', + nargs * sizeof (*args_type)); + } + + /* 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 and size. */ + args_type[specs[cnt].data_arg] = specs[cnt].data_arg_type; + args_size[specs[cnt].data_arg] = specs[cnt].size; + 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], + &args_size[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_savep, type); \ + break + + T (PA_WCHAR, pa_wchar, wint_t); + case PA_CHAR: /* Promoted. */ + case PA_INT|PA_FLAG_SHORT: /* Promoted. */ +#if LONG_MAX == INT_MAX + case PA_INT|PA_FLAG_LONG: +#endif + T (PA_INT, pa_int, int); +#if LONG_MAX == LONG_LONG_MAX + case PA_INT|PA_FLAG_LONG: +#endif + T (PA_INT|PA_FLAG_LONG_LONG, pa_long_long_int, long long int); +#if LONG_MAX != INT_MAX && LONG_MAX != LONG_LONG_MAX +# error "he?" +#endif + case PA_FLOAT: /* Promoted. */ + T (PA_DOUBLE, pa_double, double); + case PA_DOUBLE|PA_FLAG_LONG_DOUBLE: + if (__glibc_unlikely ((mode_flags & PRINTF_LDBL_IS_DBL) != 0)) + { + args_value[cnt].pa_double = va_arg (*ap_savep, double); + args_type[cnt] &= ~PA_FLAG_LONG_DOUBLE; + } + else + args_value[cnt].pa_long_double = va_arg (*ap_savep, long double); + break; + case PA_STRING: /* All pointers are the same */ + case PA_WSTRING: /* All pointers are the same */ + 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_savep, void *); + else if (__glibc_unlikely (__printf_va_arg_table != NULL) + && __printf_va_arg_table[args_type[cnt] - PA_LAST] != NULL) + { + args_value[cnt].pa_user = alloca (args_size[cnt]); + (*__printf_va_arg_table[args_type[cnt] - PA_LAST]) + (args_value[cnt].pa_user, ap_savep); + } + else + args_value[cnt].pa_long_double = 0.0; + break; + case -1: + /* Error case. Not all parameters appear in N$ format + strings. We have no way to determine their type. */ + assert ((mode_flags & PRINTF_FORTIFY) != 0); + __libc_fatal ("*** invalid %N$ use detected ***\n"); + } + + /* Now walk through all format specifiers and process them. */ + for (; (size_t) nspecs_done < nspecs; ++nspecs_done) + { + STEP4_TABLE; + + int is_negative; + union + { + unsigned long long int longlong; + unsigned long int word; + } number; + int base; + union printf_arg the_arg; + CHAR_T *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; + int use_outdigits = specs[nspecs_done].info.i18n; + char pad = specs[nspecs_done].info.pad; + CHAR_T spec = specs[nspecs_done].info.spec; + + workstart = NULL; + CHAR_T *workend = work_buffer + WORK_BUFFER_SIZE; + + /* 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) + EXTSIZ > WORK_BUFFER_SIZE) + { + if (__libc_use_alloca ((MAX (prec, width) + EXTSIZ) + * sizeof (CHAR_T))) + workend = ((CHAR_T *) alloca ((MAX (prec, width) + EXTSIZ) + * sizeof (CHAR_T)) + + (MAX (prec, width) + EXTSIZ)); + else + { + workstart = (CHAR_T *) malloc ((MAX (prec, width) + EXTSIZ) + * sizeof (CHAR_T)); + if (workstart == NULL) + { + done = -1; + goto all_done; + } + workend = workstart + (MAX (prec, width) + EXTSIZ); + } + } + + /* Process format specifiers. */ + while (1) + { + extern printf_function **__printf_function_table; + int function_done; + + if (spec <= UCHAR_MAX + && __printf_function_table != NULL + && __printf_function_table[(size_t) spec] != NULL) + { + const void **ptr = alloca (specs[nspecs_done].ndata_args + * sizeof (const void *)); + + /* Fill in an array of pointers to the argument values. */ + for (unsigned int i = 0; i < specs[nspecs_done].ndata_args; + ++i) + ptr[i] = &args_value[specs[nspecs_done].data_arg + i]; + + /* Call the function. */ + function_done = __printf_function_table[(size_t) spec] + (s, &specs[nspecs_done].info, ptr); + + if (function_done != -2) + { + /* If an error occurred we don't have information + about # of chars. */ + if (function_done < 0) + { + /* Function has set errno. */ + done = -1; + goto all_done; + } + + done_add (function_done); + break; + } + } + + JUMP (spec, step4_jumps); + + process_arg ((&specs[nspecs_done])); + process_string_arg ((&specs[nspecs_done])); + + LABEL (form_unknown): + { + unsigned int i; + const void **ptr; + + 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 = printf_unknown (s, &specs[nspecs_done].info, + ptr); + + /* If an error occurred we don't have information about # + of chars. */ + if (function_done < 0) + { + /* Function has set errno. */ + done = -1; + goto all_done; + } + + done_add (function_done); + } + break; + } + + if (__glibc_unlikely (workstart != NULL)) + free (workstart); + workstart = NULL; + + /* 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: + if (__glibc_unlikely (workstart != NULL)) + free (workstart); + scratch_buffer_free (&argsbuf); + scratch_buffer_free (&specsbuf); + return done; +} + +/* 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_T work_buffer[MAX (sizeof (info->width), sizeof (info->prec)) * 3]; + CHAR_T *const workend + = &work_buffer[sizeof (work_buffer) / sizeof (CHAR_T)]; + CHAR_T *w; + + outchar (L_('%')); + + if (info->alt) + outchar (L_('#')); + if (info->group) + outchar (L_('\'')); + if (info->showsign) + outchar (L_('+')); + else if (info->space) + outchar (L_(' ')); + if (info->left) + outchar (L_('-')); + if (info->pad == L_('0')) + outchar (L_('0')); + if (info->i18n) + outchar (L_('I')); + + if (info->width != 0) + { + w = _itoa_word (info->width, workend, 10, 0); + while (w < workend) + outchar (*w++); + } + + if (info->prec != -1) + { + outchar (L_('.')); + w = _itoa_word (info->prec, workend, 10, 0); + while (w < workend) + outchar (*w++); + } + + if (info->spec != L_('\0')) + outchar (info->spec); + + all_done: + return done; +} + +/* Group the digits from W to REAR_PTR according to the grouping rules + of the current locale. The interpretation of GROUPING is as in + `struct lconv' from <locale.h>. The grouped number extends from + the returned pointer until REAR_PTR. FRONT_PTR to W is used as a + scratch area. */ +static CHAR_T * +group_number (CHAR_T *front_ptr, CHAR_T *w, CHAR_T *rear_ptr, + const char *grouping, THOUSANDS_SEP_T thousands_sep) +{ + /* Length of the current group. */ + int len; +#ifndef COMPILE_WPRINTF + /* Length of the separator (in wide mode, the separator is always a + single wide character). */ + int tlen = strlen (thousands_sep); +#endif + + /* 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. */ + memmove (front_ptr, w, (rear_ptr - w) * sizeof (CHAR_T)); + CHAR_T *s = front_ptr + (rear_ptr - w); + + w = rear_ptr; + + /* Process all characters in the string. */ + while (s > front_ptr) + { + *--w = *--s; + + if (--len == 0 && s > front_ptr) + { + /* A new group begins. */ +#ifdef COMPILE_WPRINTF + if (w != s) + *--w = thousands_sep; + else + /* Not enough room for the separator. */ + goto copy_rest; +#else + int cnt = tlen; + if (tlen < w - s) + do + *--w = thousands_sep[--cnt]; + while (cnt > 0); + else + /* Not enough room for the separator. */ + goto copy_rest; +#endif + + if (*grouping == CHAR_MAX +#if CHAR_MIN < 0 + || *grouping < 0 +#endif + ) + { + copy_rest: + /* No further grouping to be done. Copy the rest of the + number. */ + memmove (w, s, (front_ptr -s) * sizeof (CHAR_T)); + break; + } + else if (*grouping != '\0') + len = *grouping++; + else + /* The previous grouping repeats ad infinitum. */ + len = grouping[-1]; + } + } + return w; +} + +/* Helper "class" for `fprintf to unbuffered': creates a temporary buffer. */ +struct helper_file + { + struct _IO_FILE_plus _f; +#ifdef COMPILE_WPRINTF + struct _IO_wide_data _wide_data; +#endif + FILE *_put_stream; +#ifdef _IO_MTSAFE_IO + _IO_lock_t lock; +#endif + }; + +static int +_IO_helper_overflow (FILE *s, int c) +{ + FILE *target = ((struct helper_file*) s)->_put_stream; +#ifdef COMPILE_WPRINTF + int used = s->_wide_data->_IO_write_ptr - s->_wide_data->_IO_write_base; + if (used) + { + size_t written = _IO_sputn (target, s->_wide_data->_IO_write_base, used); + if (written == 0 || written == WEOF) + return WEOF; + __wmemmove (s->_wide_data->_IO_write_base, + s->_wide_data->_IO_write_base + written, + used - written); + s->_wide_data->_IO_write_ptr -= written; + } +#else + int used = s->_IO_write_ptr - s->_IO_write_base; + if (used) + { + size_t written = _IO_sputn (target, s->_IO_write_base, used); + if (written == 0 || written == EOF) + return EOF; + memmove (s->_IO_write_base, s->_IO_write_base + written, + used - written); + s->_IO_write_ptr -= written; + } +#endif + return PUTC (c, s); +} + +#ifdef COMPILE_WPRINTF +static const struct _IO_jump_t _IO_helper_jumps libio_vtable = +{ + JUMP_INIT_DUMMY, + JUMP_INIT (finish, _IO_wdefault_finish), + JUMP_INIT (overflow, _IO_helper_overflow), + JUMP_INIT (underflow, _IO_default_underflow), + JUMP_INIT (uflow, _IO_default_uflow), + JUMP_INIT (pbackfail, (_IO_pbackfail_t) _IO_wdefault_pbackfail), + JUMP_INIT (xsputn, _IO_wdefault_xsputn), + JUMP_INIT (xsgetn, _IO_wdefault_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_wdefault_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) +}; +#else +static const struct _IO_jump_t _IO_helper_jumps libio_vtable = +{ + 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) +}; +#endif + +static int +buffered_vfprintf (FILE *s, const CHAR_T *format, va_list args, + unsigned int mode_flags) +{ + CHAR_T buf[BUFSIZ]; + struct helper_file helper; + FILE *hp = (FILE *) &helper._f; + int result, to_flush; + + /* Orient the stream. */ +#ifdef ORIENT + ORIENT; +#endif + + /* Initialize helper. */ + helper._put_stream = s; +#ifdef COMPILE_WPRINTF + hp->_wide_data = &helper._wide_data; + _IO_wsetp (hp, buf, buf + sizeof buf / sizeof (CHAR_T)); + hp->_mode = 1; +#else + _IO_setp (hp, buf, buf + sizeof buf); + hp->_mode = -1; +#endif + hp->_flags = _IO_MAGIC|_IO_NO_READS|_IO_USER_LOCK; +#if _IO_JUMPS_OFFSET + hp->_vtable_offset = 0; +#endif +#ifdef _IO_MTSAFE_IO + hp->_lock = NULL; +#endif + hp->_flags2 = s->_flags2; + _IO_JUMPS (&helper._f) = (struct _IO_jump_t *) &_IO_helper_jumps; + + /* Now print to helper instead. */ + result = vfprintf (hp, format, args, mode_flags); + + /* Lock stream. */ + __libc_cleanup_region_start (1, (void (*) (void *)) &_IO_funlockfile, s); + _IO_flockfile (s); + + /* Now flush anything from the helper to the S. */ +#ifdef COMPILE_WPRINTF + if ((to_flush = (hp->_wide_data->_IO_write_ptr + - hp->_wide_data->_IO_write_base)) > 0) + { + if ((int) _IO_sputn (s, hp->_wide_data->_IO_write_base, to_flush) + != to_flush) + result = -1; + } +#else + 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) + result = -1; + } +#endif + + /* Unlock the stream. */ + _IO_funlockfile (s); + __libc_cleanup_region_end (0); + + return result; +} |