/* Copyright (C) 1991-2008, 2009, 2010, 2011 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 "_itoa.h" #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 #define FILE _IO_FILE #undef va_list #define va_list _IO_va_list #undef BUFSIZ #define BUFSIZ _IO_BUFSIZ #define ARGCHECK(S, Format) \ do \ { \ /* Check file argument for consistence. */ \ CHECK_FILE (S, -1); \ if (S->_flags & _IO_NO_WRITES) \ { \ S->_flags |= _IO_ERR_SEEN; \ __set_errno (EBADF); \ return -1; \ } \ if (Format == NULL) \ { \ MAYBE_SET_EINVAL; \ return -1; \ } \ } while (0) #define UNBUFFERED_P(S) ((S)->_IO_file_flags & _IO_UNBUFFERED) #define done_add(val) \ do { \ unsigned int _val = val; \ assert ((unsigned int) done < (unsigned int) INT_MAX); \ if (__builtin_expect ((unsigned int) INT_MAX - (unsigned int) done \ < _val, 0)) \ { \ done = -1; \ goto all_done; \ } \ done += _val; \ } while (0) #ifndef COMPILE_WPRINTF # define vfprintf _IO_vfprintf_internal # define CHAR_T char # define UCHAR_T unsigned char # define INT_T int # 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) \ if (width > 0) \ done_add (INTUSE(_IO_padn) (s, (Padchar), width)) # 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 _IO_vfwprintf # 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 # 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) \ if (width > 0) \ done_add (_IO_wpadn (s, (Padchar), width)) # 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 \ { \ register 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) \ || (size_t) INT_MAX - (size_t) done < (size_t) (Len)) \ { \ done = -1; \ 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 variables. */ static const CHAR_T null[] = L_("(null)"); /* Helper function to provide temporary buffering for unbuffered streams. */ static int buffered_vfprintf (FILE *stream, const CHAR_T *fmt, va_list) __THROW __attribute__ ((noinline)) internal_function; /* Handle unknown format specifier. */ static int printf_unknown (FILE *, const struct printf_info *, const void *const *) __THROW; /* Group digits of number string. */ #ifdef COMPILE_WPRINTF static CHAR_T *group_number (CHAR_T *, CHAR_T *, const char *, wchar_t) __THROW internal_function; #else static CHAR_T *group_number (CHAR_T *, CHAR_T *, const char *, const char *) __THROW internal_function; #endif /* The function itself. */ int vfprintf (FILE *s, const CHAR_T *format, va_list ap) { /* The character used as thousands separator. */ #ifdef COMPILE_WPRINTF wchar_t thousands_sep = L'\0'; #else const char *thousands_sep = NULL; #endif /* 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[1000]; 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; /* For the argument descriptions, which may be allocated on the heap. */ void *args_malloced = NULL; /* 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_(' ')]) #ifdef SHARED /* 'int' is enough and it saves some space on 64 bit systems. */ # define JUMP_TABLE_TYPE const int # define JUMP(ChExpr, table) \ do \ { \ int offset; \ void *__unbounded ptr; \ spec = (ChExpr); \ offset = NOT_IN_JUMP_RANGE (spec) ? REF (form_unknown) \ : table[CHAR_CLASS (spec)]; \ ptr = &&do_form_unknown + offset; \ goto *ptr; \ } \ while (0) #else # define JUMP_TABLE_TYPE const void *const # define JUMP(ChExpr, table) \ do \ { \ const void *__unbounded 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' */ \ } #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 (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 (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 (__ldbl_is_dbl) \ 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 }; \ \ 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 (__ldbl_is_dbl) \ { \ fspec->data_arg_type = PA_DOUBLE; \ fspec->info.is_long_double = 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 (__ldbl_is_dbl) \ 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 }; \ \ 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 (__ldbl_is_dbl) \ fspec->info.is_long_double = 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; \ is_long = 0; /* This is no wide-char string. */ \ goto LABEL (print_string); \ } \ } \ /* NOTREACHED */ \ \ LABEL (form_number): \ if (s->_flags2 & _IO_FLAGS2_FORTIFY) \ { \ 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, \ sizeof work_buffer); \ 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) (sizeof (null) / sizeof (null[0])) - 1) \ { \ string = (CHAR_T *) null; \ len = (sizeof (null) / sizeof (null[0])) - 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 (__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 (__builtin_expect (string_malloced, 0)) \ 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_CUR_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. Also \ don't use incomplete characters. */ \ if (_NL_CURRENT_WORD (LC_CTYPE, _NL_CTYPE_MB_CUR_MAX) == 1) \ len = __strnlen (string, prec); \ else \ { \ /* In case we have a multibyte character set the \ situation is more complicated. We must not copy \ bytes at the end which form an incomplete character. */\ size_t ignore_size = (unsigned) prec > 1024 ? 1024 : prec;\ wchar_t ignore[ignore_size]; \ const char *str2 = string; \ const char *strend = string + prec; \ if (strend < string) \ strend = (const char *) UINTPTR_MAX; \ \ mbstate_t ps; \ memset (&ps, '\0', sizeof (ps)); \ \ while (str2 != NULL && str2 < strend) \ if (__mbsnrtowcs (ignore, &str2, strend - str2, \ ignore_size, &ps) == (size_t) -1) \ { \ /* Conversion function has set errno. */ \ done = -1; \ goto all_done; \ } \ \ if (str2 == NULL) \ len = strlen (string); \ else \ len = str2 - string - (ps.__count & 7); \ } \ } \ 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 (__builtin_expect (string_malloced, 0)) \ free (string); \ } \ break; #endif /* 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); /* 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 (__builtin_expect (__printf_function_table != NULL || __printf_modifier_table != NULL || __printf_va_arg_table != NULL, 0)) goto do_positional; /* Process whole format string. */ do { #ifdef SHARED # define REF(Name) &&do_##Name - &&do_form_unknown #else # define REF(Name) &&do_##Name #endif #define LABEL(Name) do_##Name STEP0_3_TABLE; STEP4_TABLE; union printf_arg *args_value; /* This is not used here but ... */ int is_negative; /* Flag for negative number. */ union { unsigned long long int longlong; unsigned long int word; } number; int base; union printf_arg the_arg; CHAR_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[sizeof (work_buffer) / sizeof (CHAR_T)]; /* 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) && read_int (&tmp) && *tmp == L_('$')) /* The width comes from a positional parameter. */ goto do_positional; width = va_arg (ap, int); /* Negative width means left justified. */ if (width < 0) { width = -width; pad = L_(' '); left = 1; } if (__builtin_expect (width >= (size_t) -1 / sizeof (CHAR_T) - 32, 0)) { __set_errno (ERANGE); done = -1; goto all_done; } if (width >= sizeof (work_buffer) / sizeof (work_buffer[0]) - 32) { /* We have to use a special buffer. The "32" is just a safe bet for all the output which is not counted in the width. */ size_t needed = ((size_t) width + 32) * sizeof (CHAR_T); if (__libc_use_alloca (needed)) workend = (CHAR_T *) alloca (needed) + width + 32; else { workstart = (CHAR_T *) malloc (needed); if (workstart == NULL) { done = -1; goto all_done; } workend = workstart + width + 32; } } } JUMP (*f, step1_jumps); /* Given width in format string. */ LABEL (width): width = read_int (&f); if (__builtin_expect (width >= (size_t) -1 / sizeof (CHAR_T) - 32, 0)) { __set_errno (ERANGE); done = -1; goto all_done; } if (width >= sizeof (work_buffer) / sizeof (work_buffer[0]) - 32) { /* We have to use a special buffer. The "32" is just a safe bet for all the output which is not counted in the width. */ size_t needed = ((size_t) width + 32) * sizeof (CHAR_T); if (__libc_use_alloca (needed)) workend = (CHAR_T *) alloca (needed) + width + 32; else { workstart = (CHAR_T *) malloc (needed); if (workstart == NULL) { done = -1; goto all_done; } workend = workstart + width + 32; } } if (*f == L_('$')) /* Oh, oh. The argument comes from a positional parameter. */ goto do_positional; JUMP (*f, step1_jumps); LABEL (precision): ++f; if (*f == L_('*')) { const UCHAR_T *tmp; /* Temporary value. */ tmp = ++f; if (ISDIGIT (*tmp) && read_int (&tmp) > 0 && *tmp == L_('$')) /* The precision comes from a positional parameter. */ goto do_positional; prec = va_arg (ap, int); /* If the precision is negative the precision is omitted. */ if (prec < 0) prec = -1; } else if (ISDIGIT (*f)) prec = read_int (&f); else prec = 0; if (prec > width && prec > sizeof (work_buffer) / sizeof (work_buffer[0]) - 32) { if (__builtin_expect (prec >= (size_t) -1 / sizeof (CHAR_T) - 32, 0)) { __set_errno (ERANGE); done = -1; goto all_done; } size_t needed = ((size_t) prec + 32) * sizeof (CHAR_T); if (__libc_use_alloca (needed)) workend = (CHAR_T *) alloca (needed) + prec + 32; else { workstart = (CHAR_T *) malloc (needed); if (workstart == NULL) { done = -1; goto all_done; } workend = workstart + prec + 32; } } 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 (__builtin_expect (workstart != NULL, 0)) 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; /* Here starts the more complex loop to handle positional parameters. */ do_positional: { /* Array with information about the needed arguments. This has to be dynamically extensible. */ size_t nspecs = 0; /* A more or less arbitrary start value. */ size_t nspecs_size = 32 * sizeof (struct printf_spec); struct printf_spec *specs = alloca (nspecs_size); /* 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; size_t bytes_per_arg; union printf_arg *args_value; int *args_size; int *args_type; /* 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; free (workstart); 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 (f = lead_str_end; *f != L_('\0'); f = specs[nspecs++].next_fmt) { if (nspecs * sizeof (*specs) >= nspecs_size) { /* Extend the array of format specifiers. */ struct printf_spec *old = specs; specs = extend_alloca (specs, nspecs_size, 2 * nspecs_size); /* Copy the old array's elements to the new space. */ memmove (specs, old, nspecs * sizeof (*specs)); } /* 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); /* Calculate total size needed to represent a single argument across all three argument-related arrays. */ bytes_per_arg = sizeof (*args_value) + sizeof (*args_size) + sizeof (*args_type); /* Check for potential integer overflow. */ if (__builtin_expect (nargs > SIZE_MAX / bytes_per_arg, 0)) { __set_errno (ERANGE); done = -1; goto all_done; } /* Allocate memory for all three argument arrays. */ if (__libc_use_alloca (nargs * bytes_per_arg)) args_value = alloca (nargs * bytes_per_arg); else { args_value = args_malloced = malloc (nargs * bytes_per_arg); if (args_value == NULL) { done = -1; goto all_done; } } /* 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, s->_flags2 & _IO_FLAGS2_FORTIFY ? '\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_save, 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 (__ldbl_is_dbl) { args_value[cnt].pa_double = va_arg (ap_save, double); args_type[cnt] &= ~PA_FLAG_LONG_DOUBLE; } else args_value[cnt].pa_long_double = va_arg (ap_save, 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_save, void *); else if (__builtin_expect (__printf_va_arg_table != NULL, 0) && __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_save); } 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 (s->_flags2 & _IO_FLAGS2_FORTIFY); __libc_fatal ("*** invalid %N$ use detected ***\n"); } /* Now walk through all format specifiers and process them. */ for (; (size_t) nspecs_done < nspecs; ++nspecs_done) { #undef REF #ifdef SHARED # define REF(Name) &&do2_##Name - &&do_form_unknown #else # define REF(Name) &&do2_##Name #endif #undef LABEL #define LABEL(Name) do2_##Name STEP4_TABLE; int is_negative; union { unsigned long long int longlong; unsigned long int word; } number; int base; union printf_arg the_arg; CHAR_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; workend = &work_buffer[sizeof (work_buffer) / sizeof (CHAR_T)]; /* Fill in last information. */ if (specs[nspecs_done].width_arg != -1) { /* Extract the field width from an argument. */ specs[nspecs_done].info.width = args_value[specs[nspecs_done].width_arg].pa_int; if (specs[nspecs_done].info.width < 0) /* If the width value is negative left justification is selected and the value is taken as being positive. */ { specs[nspecs_done].info.width *= -1; left = specs[nspecs_done].info.left = 1; } width = specs[nspecs_done].info.width; } if (specs[nspecs_done].prec_arg != -1) { /* Extract the precision from an argument. */ specs[nspecs_done].info.prec = args_value[specs[nspecs_done].prec_arg].pa_int; if (specs[nspecs_done].info.prec < 0) /* If the precision is negative the precision is omitted. */ specs[nspecs_done].info.prec = -1; prec = specs[nspecs_done].info.prec; } /* Maybe the buffer is too small. */ if (MAX (prec, width) + 32 > (int) (sizeof (work_buffer) / sizeof (CHAR_T))) { if (__libc_use_alloca ((MAX (prec, width) + 32) * sizeof (CHAR_T))) workend = ((CHAR_T *) alloca ((MAX (prec, width) + 32) * sizeof (CHAR_T)) + (MAX (prec, width) + 32)); else { workstart = (CHAR_T *) malloc ((MAX (prec, width) + 32) * sizeof (CHAR_T)); workend = workstart + (MAX (prec, width) + 32); } } /* 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; } 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: free (args_malloced); free (workstart); /* Unlock the stream. */ _IO_funlockfile (s); _IO_cleanup_region_end (0); 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)]; register 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 according to the grouping rules of the current locale. The interpretation of GROUPING is as in `struct lconv' from . */ static CHAR_T * internal_function group_number (CHAR_T *w, CHAR_T *rear_ptr, const char *grouping, #ifdef COMPILE_WPRINTF wchar_t thousands_sep #else const char *thousands_sep #endif ) { int len; CHAR_T *src, *s; #ifndef COMPILE_WPRINTF 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. */ src = (CHAR_T *) alloca ((rear_ptr - w) * sizeof (CHAR_T)); s = (CHAR_T *) __mempcpy (src, w, (rear_ptr - w) * sizeof (CHAR_T)); w = rear_ptr; /* Process all characters in the string. */ while (s > src) { *--w = *--s; if (--len == 0 && s > src) { /* A new group begins. */ #ifdef COMPILE_WPRINTF *--w = thousands_sep; #else int cnt = tlen; do *--w = thousands_sep[--cnt]; while (cnt > 0); #endif if (*grouping == CHAR_MAX #if CHAR_MIN < 0 || *grouping < 0 #endif ) { /* No further grouping to be done. Copy the rest of the number. */ do *--w = *--s; while (s > src); break; } else if (*grouping != '\0') /* The previous grouping repeats ad infinitum. */ len = *grouping++; else 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 _IO_FILE *_put_stream; #ifdef _IO_MTSAFE_IO _IO_lock_t lock; #endif }; static int _IO_helper_overflow (_IO_FILE *s, int c) { _IO_FILE *target = ((struct helper_file*) s)->_put_stream; #ifdef COMPILE_WPRINTF int used = s->_wide_data->_IO_write_ptr - s->_wide_data->_IO_write_base; if (used) { _IO_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) { _IO_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 = { JUMP_INIT_DUMMY, JUMP_INIT (finish, INTUSE(_IO_wdefault_finish)), JUMP_INIT (overflow, _IO_helper_overflow), JUMP_INIT (underflow, _IO_default_underflow), JUMP_INIT (uflow, INTUSE(_IO_default_uflow)), JUMP_INIT (pbackfail, (_IO_pbackfail_t) INTUSE(_IO_wdefault_pbackfail)), JUMP_INIT (xsputn, INTUSE(_IO_wdefault_xsputn)), JUMP_INIT (xsgetn, INTUSE(_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, INTUSE(_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 = { JUMP_INIT_DUMMY, JUMP_INIT (finish, INTUSE(_IO_default_finish)), JUMP_INIT (overflow, _IO_helper_overflow), JUMP_INIT (underflow, _IO_default_underflow), JUMP_INIT (uflow, INTUSE(_IO_default_uflow)), JUMP_INIT (pbackfail, INTUSE(_IO_default_pbackfail)), JUMP_INIT (xsputn, INTUSE(_IO_default_xsputn)), JUMP_INIT (xsgetn, INTUSE(_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, INTUSE(_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 internal_function buffered_vfprintf (register _IO_FILE *s, const CHAR_T *format, _IO_va_list args) { CHAR_T buf[_IO_BUFSIZ]; struct helper_file helper; register _IO_FILE *hp = (_IO_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->_IO_file_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. */ #ifndef COMPILE_WPRINTF result = INTUSE(_IO_vfprintf) (hp, format, args); #else result = vfprintf (hp, format, args); #endif /* 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; } #undef vfprintf #ifdef COMPILE_WPRINTF strong_alias (_IO_vfwprintf, __vfwprintf); ldbl_weak_alias (_IO_vfwprintf, vfwprintf); #else ldbl_strong_alias (_IO_vfprintf_internal, vfprintf); ldbl_hidden_def (_IO_vfprintf_internal, vfprintf) ldbl_strong_alias (_IO_vfprintf_internal, _IO_vfprintf); #endif