/* Copyright (C) 1991-2021 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 . */ #include #include #include #include #include #include #include #include #include #include #include #include #include <_itoa.h> #include #include #include #include /* 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 #ifdef COMPILE_WPRINTF #include #endif #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) #if __HAVE_FLOAT128_UNLIKE_LDBL # define PARSE_FLOAT_VA_ARG_EXTENDED(INFO) \ do \ { \ if (is_long_double \ && (mode_flags & PRINTF_LDBL_USES_FLOAT128) != 0) \ { \ INFO.is_binary128 = 1; \ the_arg.pa_float128 = va_arg (ap, _Float128); \ } \ else \ { \ PARSE_FLOAT_VA_ARG (INFO); \ } \ } \ while (0) #else # define PARSE_FLOAT_VA_ARG_EXTENDED(INFO) \ PARSE_FLOAT_VA_ARG (INFO); #endif #define PARSE_FLOAT_VA_ARG(INFO) \ do \ { \ INFO.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); \ } \ while (0) #if __HAVE_FLOAT128_UNLIKE_LDBL # define SETUP_FLOAT128_INFO(INFO) \ do \ { \ if ((mode_flags & PRINTF_LDBL_USES_FLOAT128) != 0) \ INFO.is_binary128 = is_long_double; \ else \ INFO.is_binary128 = 0; \ } \ while (0) #else # define SETUP_FLOAT128_INFO(INFO) \ do \ { \ INFO.is_binary128 = 0; \ } \ while (0) #endif /* Add LENGTH to DONE. Return the new value of DONE, or -1 on overflow (and set errno accordingly). */ static inline int done_add_func (size_t length, int done) { if (done < 0) return done; int ret; if (INT_ADD_WRAPV (done, length, &ret)) { __set_errno (EOVERFLOW); return -1; } return ret; } #define done_add(val) \ do \ { \ /* Ensure that VAL has a type similar to int. */ \ _Static_assert (sizeof (val) == sizeof (int), "value int size"); \ _Static_assert ((__typeof__ (val)) -1 < 0, "value signed"); \ done = done_add_func ((val), done); \ if (done < 0) \ goto all_done; \ } \ while (0) #ifndef COMPILE_WPRINTF # define vfprintf __vfprintf_internal # define CHAR_T char # define OTHER_CHAR_T wchar_t # 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 PUTC(C, F) _IO_putc_unlocked (C, F) # define ORIENT if (_IO_vtable_offset (s) == 0 && _IO_fwide (s, -1) != -1)\ return -1 # define CONVERT_FROM_OTHER_STRING __wcsrtombs #else # define vfprintf __vfwprintf_internal # define CHAR_T wchar_t # define OTHER_CHAR_T char /* 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 PUTC(C, F) _IO_putwc_unlocked (C, F) # define ORIENT if (_IO_fwide (s, 1) != 1) return -1 # define CONVERT_FROM_OTHER_STRING __mbsrtowcs # 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 static inline int pad_func (FILE *s, CHAR_T padchar, int width, int done) { if (width > 0) { ssize_t written; #ifndef COMPILE_WPRINTF written = _IO_padn (s, padchar, width); #else written = _IO_wpadn (s, padchar, width); #endif if (__glibc_unlikely (written != width)) return -1; return done_add_func (width, done); } return done; } #define PAD(Padchar) \ do \ { \ done = pad_func (s, (Padchar), width, done); \ if (done < 0) \ goto all_done; \ } \ while (0) #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) static inline int outstring_func (FILE *s, const UCHAR_T *string, size_t length, int done) { assert ((size_t) done <= (size_t) INT_MAX); if ((size_t) PUT (s, string, length) != (size_t) (length)) return -1; return done_add_func (length, done); } #define outstring(String, Len) \ do \ { \ const void *string_ = (String); \ done = outstring_func (s, string_, (Len), done); \ if (done < 0) \ goto all_done; \ } \ while (0) /* Write the string SRC to S. If PREC is non-negative, write at most PREC bytes. If LEFT is true, perform left justification. */ static int outstring_converted_wide_string (FILE *s, const OTHER_CHAR_T *src, int prec, int width, bool left, int done) { /* Use a small buffer to combine processing of multiple characters. CONVERT_FROM_OTHER_STRING expects the buffer size in (wide) characters, and buf_length counts that. */ enum { buf_length = 256 / sizeof (CHAR_T) }; CHAR_T buf[buf_length]; _Static_assert (sizeof (buf) > MB_LEN_MAX, "buffer is large enough for a single multi-byte character"); /* Add the initial padding if needed. */ if (width > 0 && !left) { /* Make a first pass to find the output width, so that we can add the required padding. */ mbstate_t mbstate = { 0 }; const OTHER_CHAR_T *src_copy = src; size_t total_written; if (prec < 0) total_written = CONVERT_FROM_OTHER_STRING (NULL, &src_copy, 0, &mbstate); else { /* The source might not be null-terminated. Enforce the limit manually, based on the output length. */ total_written = 0; size_t limit = prec; while (limit > 0 && src_copy != NULL) { size_t write_limit = buf_length; if (write_limit > limit) write_limit = limit; size_t written = CONVERT_FROM_OTHER_STRING (buf, &src_copy, write_limit, &mbstate); if (written == (size_t) -1) return -1; if (written == 0) break; total_written += written; limit -= written; } } /* Output initial padding. */ if (total_written < width) { done = pad_func (s, L_(' '), width - total_written, done); if (done < 0) return done; } } /* Convert the input string, piece by piece. */ size_t total_written = 0; { mbstate_t mbstate = { 0 }; /* If prec is negative, remaining is not decremented, otherwise, it serves as the write limit. */ size_t remaining = -1; if (prec >= 0) remaining = prec; while (remaining > 0 && src != NULL) { size_t write_limit = buf_length; if (remaining < write_limit) write_limit = remaining; size_t written = CONVERT_FROM_OTHER_STRING (buf, &src, write_limit, &mbstate); if (written == (size_t) -1) return -1; if (written == 0) break; done = outstring_func (s, (const UCHAR_T *) buf, written, done); if (done < 0) return done; total_written += written; if (prec >= 0) remaining -= written; } } /* Add final padding. */ if (width > 0 && left && total_written < width) return pad_func (s, L_(' '), width - total_written, done); return done; } /* Calls __printf_fp or __printf_fphex based on the value of the format specifier INFO->spec. */ static inline int __printf_fp_spec (FILE *fp, const struct printf_info *info, const void *const *args) { if (info->spec == 'a' || info->spec == 'A') return __printf_fphex (fp, info, args); else return __printf_fp (fp, info, args); } /* 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 '' */ \ 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 '' */ \ 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 '' */ \ 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 '' */ \ 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 '' */ \ 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 '' */ \ 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' */ \ } /* Before invoking this macro, process_arg_int etc. macros have to be defined to extract one argument of the appropriate type. */ #define process_arg() \ /* 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 = process_arg_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 (is_long_num) \ signed_number = process_arg_long_int (); \ else if (is_char) \ signed_number = (signed char) process_arg_unsigned_int (); \ else if (!is_short) \ signed_number = process_arg_int (); \ else \ signed_number = (short int) process_arg_unsigned_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) \ { \ number.longlong = process_arg_unsigned_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 (is_long_num) \ number.word = process_arg_unsigned_long_int (); \ else if (is_char) \ number.word = (unsigned char) process_arg_unsigned_int (); \ else if (!is_short) \ number.word = process_arg_unsigned_int (); \ else \ number.word = (unsigned short int) process_arg_unsigned_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_pointer): \ /* Generic pointer. */ \ { \ const void *ptr = process_arg_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. */ \ void *ptrptr = process_arg_pointer (); \ if (is_longlong) \ *(long long int *) ptrptr = done; \ else if (is_long_num) \ *(long int *) ptrptr = done; \ else if (is_char) \ *(char *) ptrptr = done; \ else if (!is_short) \ *(int *) ptrptr = done; \ else \ *(short int *) ptrptr = 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() \ LABEL (form_character): \ /* Character. */ \ if (is_long) \ goto LABEL (form_wcharacter); \ --width; /* Account for the character itself. */ \ if (!left) \ PAD (L' '); \ outchar (__btowc ((unsigned char) process_arg_int ())); /* Promoted. */ \ if (left) \ PAD (L' '); \ break; \ \ LABEL (form_wcharacter): \ { \ /* Wide character. */ \ --width; \ if (!left) \ PAD (L' '); \ outchar (process_arg_wchar_t ()); \ if (left) \ PAD (L' '); \ } \ 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. */ \ string = (CHAR_T *) process_arg_wstring (); \ \ /* Entry point for printing other strings. */ \ LABEL (print_string): \ \ 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')) \ { \ done = outstring_converted_wide_string \ (s, (const char *) string, prec, width, left, done); \ if (done < 0) \ goto all_done; \ /* The padding has already been written. */ \ break; \ } \ 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' '); \ } \ break; #else # define process_string_arg() \ LABEL (form_character): \ /* Character. */ \ if (is_long) \ goto LABEL (form_wcharacter); \ --width; /* Account for the character itself. */ \ if (!left) \ PAD (' '); \ outchar ((unsigned char) process_arg_int ()); /* Promoted. */ \ 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, process_arg_wchar_t (), &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; \ \ /* The string argument could in fact be `char *' or `wchar_t *'. \ But this should not make a difference here. */ \ string = (char *) process_arg_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 (in bytes) specified by the precision. */ \ len = __strnlen (string, prec); \ else \ len = strlen (string); \ } \ else \ { \ done = outstring_converted_wide_string \ (s, (const wchar_t *) string, prec, width, left, done); \ if (done < 0) \ goto all_done; \ /* The padding has already been written. */ \ break; \ } \ \ if ((width -= len) < 0) \ { \ outstring (string, len); \ break; \ } \ \ if (!left) \ PAD (' '); \ outstring (string, len); \ if (left) \ PAD (' '); \ } \ 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 *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; /* 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 . 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; 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. */ /* Argument is long double/long long int. Only used if double/long double or long int/long long int are distinct. */ int is_long_double __attribute__ ((unused)) = 0; 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; 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_('$')) /* The width comes from a positional parameter. */ goto do_positional; } width = va_arg (ap, int); /* Negative width means left justified. */ if (width < 0) { width = -width; pad = L_(' '); left = 1; } } JUMP (*f, step1_jumps); /* Given width in format string. */ LABEL (width): width = read_int (&f); if (__glibc_unlikely (width == -1)) { __set_errno (EOVERFLOW); done = -1; goto all_done; } if (*f == L_('$')) /* 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; 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) { #define process_arg_int() va_arg (ap, int) #define process_arg_long_int() va_arg (ap, long int) #define process_arg_long_long_int() va_arg (ap, long long int) #define process_arg_pointer() va_arg (ap, void *) #define process_arg_string() va_arg (ap, const char *) #define process_arg_unsigned_int() va_arg (ap, unsigned int) #define process_arg_unsigned_long_int() va_arg (ap, unsigned long int) #define process_arg_unsigned_long_long_int() va_arg (ap, unsigned long long int) #define process_arg_wchar_t() va_arg (ap, wchar_t) #define process_arg_wstring() va_arg (ap, const wchar_t *) process_arg (); process_string_arg (); #undef process_arg_int #undef process_arg_long_int #undef process_arg_long_long_int #undef process_arg_pointer #undef process_arg_string #undef process_arg_unsigned_int #undef process_arg_unsigned_long_int #undef process_arg_unsigned_long_long_int #undef process_arg_wchar_t #undef process_arg_wstring LABEL (form_float): LABEL (form_floathex): { 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 }; PARSE_FLOAT_VA_ARG_EXTENDED (info); const void *ptr = &the_arg; int function_done = __printf_fp_spec (s, &info, &ptr); if (function_done < 0) { done = -1; goto all_done; } done_add (function_done); } break; 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; /* 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: 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: /* 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; 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; } #if __HAVE_FLOAT128_UNLIKE_LDBL else if ((mode_flags & PRINTF_LDBL_USES_FLOAT128) != 0) args_value[cnt].pa_float128 = va_arg (*ap_savep, _Float128); #endif 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 memset (&args_value[cnt], 0, sizeof (args_value[cnt])); 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; 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 __attribute__ ((unused)) = 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; 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; } /* 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); #define process_arg_data args_value[specs[nspecs_done].data_arg] #define process_arg_int() process_arg_data.pa_int #define process_arg_long_int() process_arg_data.pa_long_int #define process_arg_long_long_int() process_arg_data.pa_long_long_int #define process_arg_pointer() process_arg_data.pa_pointer #define process_arg_string() process_arg_data.pa_string #define process_arg_unsigned_int() process_arg_data.pa_u_int #define process_arg_unsigned_long_int() process_arg_data.pa_u_long_int #define process_arg_unsigned_long_long_int() process_arg_data.pa_u_long_long_int #define process_arg_wchar_t() process_arg_data.pa_wchar #define process_arg_wstring() process_arg_data.pa_wstring process_arg (); process_string_arg (); #undef process_arg_data #undef process_arg_int #undef process_arg_long_int #undef process_arg_long_long_int #undef process_arg_pointer #undef process_arg_string #undef process_arg_unsigned_int #undef process_arg_unsigned_long_int #undef process_arg_unsigned_long_long_int #undef process_arg_wchar_t #undef process_arg_wstring LABEL (form_float): LABEL (form_floathex): { const void *ptr = (const void *) &args_value[specs[nspecs_done].data_arg]; if (__glibc_unlikely ((mode_flags & PRINTF_LDBL_IS_DBL) != 0)) { specs[nspecs_done].data_arg_type = PA_DOUBLE; specs[nspecs_done].info.is_long_double = 0; } SETUP_FLOAT128_INFO (specs[nspecs_done].info); int function_done = __printf_fp_spec (s, &specs[nspecs_done].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_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; } /* 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: 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 . 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; }