/* Copyright (C) 1991, 92, 93, 94, 95, 96 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with the GNU C Library; see the file COPYING.LIB. If not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include #include #include #include #include #include #include #include #include "_itoa.h" #include "../locale/localeinfo.h" /* This code is shared between the standard stdio implementation found in GNU C library and the libio implementation originally found in GNU libg++. Beside this it is also shared between the normal and wide character implementation as defined in ISO/IEC 9899:1990/Amendment 1:1995. */ #ifndef COMPILE_WPRINTF # define CHAR_T char # define UCHAR_T unsigned char # define INT_T int # define L_(Str) Str # define ISDIGIT(Ch) isdigit (Ch) # ifdef USE_IN_LIBIO # define PUT(F, S, N) _IO_sputn ((F), (S), (N)) # define PAD(Padchar) \ if (width > 0) \ done += _IO_padn (s, (Padchar), width) # else # define PUTC(C, F) putc (C, F) ssize_t __printf_pad __P ((FILE *, char pad, size_t n)); # define PAD(Padchar) \ if (width > 0) \ { ssize_t __res = __printf_pad (s, (Padchar), width); \ if (__res == -1) return -1; \ done += __res; } # endif #else # define vfprintf vfwprintf # define CHAR_T wchar_t # define UCHAR_T uwchar_t # define INT_T wint_t # define L_(Str) L##Str # define ISDIGIT(Ch) iswdigit (Ch) # ifdef USE_IN_LIBIO # define PUT(F, S, N) _IO_sputn ((F), (S), (N)) # define PAD(Padchar) \ if (width > 0) \ done += _IO_wpadn (s, (Padchar), width) # else # define PUTC(C, F) wputc (C, F) ssize_t __wprintf_pad __P ((FILE *, wchar_t pad, size_t n)); # define PAD(Padchar) \ if (width > 0) \ { ssize_t __res = __wprintf_pad (s, (Padchar), width); \ if (__res == -1) return -1; \ done += __res; } # endif #endif /* Include the shared code for parsing the format string. */ #include "printf-parse.h" #ifdef USE_IN_LIBIO /* This code is for use in libio. */ # include # define PUTC(C, F) _IO_putc_unlocked (C, F) # define vfprintf _IO_vfprintf # define FILE _IO_FILE # undef va_list # define va_list _IO_va_list # undef BUFSIZ # define BUFSIZ _IO_BUFSIZ # define ARGCHECK(S, Format) \ do \ { \ /* Check file argument for consistence. */ \ CHECK_FILE (S, -1); \ if (S->_flags & _IO_NO_WRITES) \ { \ __set_errno (EBADF); \ return -1; \ } \ if (Format == NULL) \ { \ MAYBE_SET_EINVAL; \ return -1; \ } \ } while (0) # define UNBUFFERED_P(S) ((S)->_IO_file_flags & _IO_UNBUFFERED) #else /* ! USE_IN_LIBIO */ /* This code is for use in the GNU C library. */ # include # define PUT(F, S, N) fwrite (S, 1, N, F) # define ARGCHECK(S, Format) \ do \ { \ /* Check file argument for consistence. */ \ if (!__validfp (S) || !S->__mode.__write) \ { \ __set_errno (EBADF); \ return -1; \ } \ if (Format == NULL) \ { \ __set_errno (EINVAL); \ return -1; \ } \ if (!S->__seen) \ { \ if (__flshfp (S, EOF) == EOF) \ return -1; \ } \ } \ while (0) # define UNBUFFERED_P(s) ((s)->__buffer == NULL) /* XXX These declarations should go as soon as the stdio header files have these prototypes. */ extern void __flockfile (FILE *); extern void __funlockfile (FILE *); #endif /* USE_IN_LIBIO */ #define outchar(Ch) \ do \ { \ register const int outc = (Ch); \ if (PUTC (outc, s) == EOF) \ return -1; \ else \ ++done; \ } \ while (0) #define outstring(String, Len) \ do \ { \ if ((size_t) PUT (s, (String), (Len)) != (size_t) (Len)) \ return -1; \ done += (Len); \ } \ while (0) /* For handling long_double and longlong we use the same flag. */ #ifndef is_longlong # define is_longlong is_long_double #endif /* Global variables. */ static const char null[] = "(null)"; /* Helper function to provide temporary buffering for unbuffered streams. */ static int buffered_vfprintf __P ((FILE *stream, const CHAR_T *fmt, va_list)); /* Handle unknown format specifier. */ static int printf_unknown __P ((FILE *, const struct printf_info *, const void *const *)); /* Group digits of number string. */ static char *group_number __P ((CHAR_T *, CHAR_T *, const CHAR_T *, wchar_t)); /* The function itself. */ int vfprintf (FILE *s, const CHAR_T *format, va_list ap) { /* The character used as thousands separator. */ wchar_t thousands_sep; /* The string describing the size of groups of digits. */ const char *grouping; /* Place to accumulate the result. */ int done; /* Current character in format string. */ const UCHAR_T *f; /* End of leading constant string. */ const UCHAR_T *lead_str_end; /* Points to next format specifier. */ const UCHAR_T *end_of_spec; /* Buffer intermediate results. */ char work_buffer[1000]; #define workend (&work_buffer[sizeof (work_buffer) - 1]) /* State for restartable multibyte character handling functions. */ mbstate_t mbstate; /* We have to save the original argument pointer. */ va_list ap_save; /* Count number of specifiers we already processed. */ int nspecs_done; /* For the %m format we may need the current `errno' value. */ int save_errno = errno; /* This table maps a character into a number representing a class. In each step there is a destination label for each class. */ static const int jump_table[] = { /* ' ' */ 1, 0, 0, /* '#' */ 4, 0, /* '%' */ 14, 0, /* '\''*/ 6, 0, 0, /* '*' */ 7, /* '+' */ 2, 0, /* '-' */ 3, /* '.' */ 9, 0, /* '0' */ 5, /* '1' */ 8, /* '2' */ 8, /* '3' */ 8, /* '4' */ 8, /* '5' */ 8, /* '6' */ 8, /* '7' */ 8, /* '8' */ 8, /* '9' */ 8, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 'C' */ 25, 0, /* 'E' */ 19, 0, /* 'G' */ 19, 0, 0, 0, 0, /* 'L' */ 12, 0, 0, 0, 0, 0, 0, /* 'S' */ 21, 0, 0, 0, 0, /* 'X' */ 18, 0, /* 'Z' */ 13, 0, 0, 0, 0, 0, 0, 0, 0, /* 'c' */ 20, /* 'd' */ 15, /* 'e' */ 19, /* 'f' */ 19, /* 'g' */ 19, /* 'h' */ 10, /* 'i' */ 15, 0, 0, /* 'l' */ 11, /* 'm' */ 24, /* 'n' */ 23, /* 'o' */ 17, /* 'p' */ 22, /* 'q' */ 12, 0, /* 's' */ 21, 0, /* 'u' */ 16, 0, 0, /* 'x' */ 18 }; #define NOT_IN_JUMP_RANGE(Ch) ((Ch) < ' ' || (Ch) > 'x') #define CHAR_CLASS(Ch) (jump_table[(int) (Ch) - ' ']) #define JUMP(ChExpr, table) \ do \ { \ const void *ptr; \ spec = (ChExpr); \ ptr = NOT_IN_JUMP_RANGE (spec) ? REF (form_unknown) \ : table[CHAR_CLASS (spec)]; \ goto *ptr; \ } \ while (0) #define STEP0_3_TABLE \ /* Step 0: at the beginning. */ \ static const void *step0_jumps[26] = \ { \ 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' */ \ REF (form_percent), /* for '%' */ \ REF (form_integer), /* for 'd', 'i' */ \ REF (form_unsigned), /* for 'u' */ \ REF (form_octal), /* for 'o' */ \ REF (form_hexa), /* for 'X', 'x' */ \ REF (form_float), /* for 'E', 'e', 'f', 'G', 'g' */ \ REF (form_character), /* for 'c' */ \ REF (form_string), /* for 's', 'S' */ \ REF (form_pointer), /* for 'p' */ \ REF (form_number), /* for 'n' */ \ REF (form_strerror), /* for 'm' */ \ REF (form_wcharacter) /* for 'C' */ \ }; \ /* Step 1: after processing width. */ \ static const void *step1_jumps[26] = \ { \ 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' */ \ REF (form_percent), /* for '%' */ \ REF (form_integer), /* for 'd', 'i' */ \ REF (form_unsigned), /* for 'u' */ \ REF (form_octal), /* for 'o' */ \ REF (form_hexa), /* for 'X', 'x' */ \ REF (form_float), /* for 'E', 'e', 'f', 'G', 'g' */ \ REF (form_character), /* for 'c' */ \ REF (form_string), /* for 's', 'S' */ \ REF (form_pointer), /* for 'p' */ \ REF (form_number), /* for 'n' */ \ REF (form_strerror), /* for 'm' */ \ REF (form_wcharacter) /* for 'C' */ \ }; \ /* Step 2: after processing precision. */ \ static const void *step2_jumps[26] = \ { \ 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' */ \ REF (form_percent), /* for '%' */ \ REF (form_integer), /* for 'd', 'i' */ \ REF (form_unsigned), /* for 'u' */ \ REF (form_octal), /* for 'o' */ \ REF (form_hexa), /* for 'X', 'x' */ \ REF (form_float), /* for 'E', 'e', 'f', 'G', 'g' */ \ REF (form_character), /* for 'c' */ \ REF (form_string), /* for 's', 'S' */ \ REF (form_pointer), /* for 'p' */ \ REF (form_number), /* for 'n' */ \ REF (form_strerror), /* for 'm' */ \ REF (form_wcharacter) /* for 'C' */ \ }; \ /* Step 3: after processing first 'l' modifier. */ \ static const void *step3_jumps[26] = \ { \ 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' */ \ REF (form_percent), /* for '%' */ \ REF (form_integer), /* for 'd', 'i' */ \ REF (form_unsigned), /* for 'u' */ \ REF (form_octal), /* for 'o' */ \ REF (form_hexa), /* for 'X', 'x' */ \ REF (form_float), /* for 'E', 'e', 'f', 'G', 'g' */ \ REF (form_character), /* for 'c' */ \ REF (form_string), /* for 's', 'S' */ \ REF (form_pointer), /* for 'p' */ \ REF (form_number), /* for 'n' */ \ REF (form_strerror), /* for 'm' */ \ REF (form_wcharacter) /* for 'C' */ \ } #define STEP4_TABLE \ /* Step 4: processing format specifier. */ \ static const void *step4_jumps[26] = \ { \ 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' */ \ REF (form_percent), /* for '%' */ \ REF (form_integer), /* for 'd', 'i' */ \ REF (form_unsigned), /* for 'u' */ \ REF (form_octal), /* for 'o' */ \ REF (form_hexa), /* for 'X', 'x' */ \ REF (form_float), /* for 'E', 'e', 'f', 'G', 'g' */ \ REF (form_character), /* for 'c' */ \ REF (form_string), /* for 's', 'S' */ \ REF (form_pointer), /* for 'p' */ \ REF (form_number), /* for 'n' */ \ REF (form_strerror), /* for 'm' */ \ REF (form_wcharacter) /* for 'C' */ \ } #define process_arg(fspec) \ /* Start real work. We know about all flags and modifiers and \ now process the wanted format specifier. */ \ LABEL (form_percent): \ /* Write a literal "%". */ \ outchar ('%'); \ break; \ \ LABEL (form_integer): \ /* Signed decimal integer. */ \ base = 10; \ \ if (is_longlong) \ { \ long long int signed_number; \ \ if (fspec == NULL) \ signed_number = va_arg (ap, long long int); \ else \ signed_number = args_value[fspec->data_arg].pa_long_long_int; \ \ is_negative = signed_number < 0; \ number.longlong = is_negative ? (- signed_number) : signed_number; \ \ goto LABEL (longlong_number); \ } \ else \ { \ long int signed_number; \ \ if (fspec == NULL) \ if (is_long) \ signed_number = va_arg (ap, long int); \ else /* `short int' will be promoted to `int'. */ \ signed_number = va_arg (ap, int); \ else \ if (is_long) \ signed_number = args_value[fspec->data_arg].pa_long_int; \ else \ signed_number = args_value[fspec->data_arg].pa_int; \ \ is_negative = signed_number < 0; \ number.word = is_negative ? (- signed_number) : signed_number; \ \ goto LABEL (number); \ } \ /* NOTREACHED */ \ \ LABEL (form_unsigned): \ /* Unsigned decimal integer. */ \ base = 10; \ goto LABEL (unsigned_number); \ /* NOTREACHED */ \ \ LABEL (form_octal): \ /* Unsigned octal integer. */ \ base = 8; \ goto LABEL (unsigned_number); \ /* NOTREACHED */ \ \ LABEL (form_hexa): \ /* Unsigned hexadecimal integer. */ \ base = 16; \ \ LABEL (unsigned_number): /* Unsigned number of base BASE. */ \ \ /* ANSI specifies the `+' and ` ' flags only for signed \ conversions. */ \ is_negative = 0; \ showsign = 0; \ space = 0; \ \ if (is_longlong) \ { \ if (fspec == NULL) \ number.longlong = va_arg (ap, unsigned long long int); \ else \ number.longlong = args_value[fspec->data_arg].pa_u_long_long_int; \ \ LABEL (longlong_number): \ if (prec < 0) \ /* Supply a default precision if none was given. */ \ prec = 1; \ else \ /* We have to take care for the '0' flag. If a precision \ is given it must be ignored. */ \ pad = ' '; \ \ /* If the precision is 0 and the number is 0 nothing has to \ be written for the number. */ \ if (prec == 0 && number.longlong == 0) \ string = workend; \ else \ { \ /* Put the number in WORK. */ \ string = _itoa (number.longlong, workend + 1, base, \ spec == 'X'); \ string -= 1; \ if (group && grouping) \ string = group_number (string, workend, grouping, \ thousands_sep); \ } \ /* Simply further test for num != 0. */ \ number.word = number.longlong != 0; \ } \ else \ { \ if (fspec == NULL) \ if (is_long) \ number.word = va_arg (ap, unsigned long int); \ else if (!is_short) \ number.word = va_arg (ap, unsigned int); \ else \ number.word = (unsigned short int) va_arg (ap, unsigned int); \ else \ if (is_long) \ number.word = args_value[fspec->data_arg].pa_u_long_int; \ else if (!is_short) \ number.word = args_value[fspec->data_arg].pa_u_int; \ else \ number.word = (unsigned short int) \ args_value[fspec->data_arg].pa_u_short_int; \ \ LABEL (number): \ if (prec < 0) \ /* Supply a default precision if none was given. */ \ prec = 1; \ else \ /* We have to take care for the '0' flag. If a precision \ is given it must be ignored. */ \ pad = ' '; \ \ /* If the precision is 0 and the number is 0 nothing has to \ be written for the number. */ \ if (prec == 0 && number.word == 0) \ string = workend; \ else \ { \ /* Put the number in WORK. */ \ string = _itoa_word (number.word, workend + 1, base, \ spec == 'X'); \ string -= 1; \ if (group && grouping) \ string = group_number (string, workend, grouping, \ thousands_sep); \ } \ } \ \ prec -= workend - string; \ \ if (prec > 0) \ /* Add zeros to the precision. */ \ while (prec-- > 0) \ *string-- = '0'; \ else if (number.word != 0 && alt && base == 8) \ /* Add octal marker. */ \ *string-- = '0'; \ \ if (!left) \ { \ width -= workend - string; \ \ if (number.word != 0 && alt && base == 16) \ /* Account for 0X hex marker. */ \ width -= 2; \ \ if (is_negative || showsign || space) \ --width; \ \ if (pad == '0') \ { \ while (width-- > 0) \ *string-- = '0'; \ \ if (number.word != 0 && alt && base == 16) \ { \ *string-- = spec; \ *string-- = '0'; \ } \ \ if (is_negative) \ *string-- = '-'; \ else if (showsign) \ *string-- = '+'; \ else if (space) \ *string-- = ' '; \ } \ else \ { \ if (number.word != 0 && alt && base == 16) \ { \ *string-- = spec; \ *string-- = '0'; \ } \ \ if (is_negative) \ *string-- = '-'; \ else if (showsign) \ *string-- = '+'; \ else if (space) \ *string-- = ' '; \ \ while (width-- > 0) \ *string-- = ' '; \ } \ \ outstring (string + 1, workend - string); \ \ break; \ } \ else \ { \ if (number.word != 0 && alt && base == 16) \ { \ *string-- = spec; \ *string-- = '0'; \ } \ \ if (is_negative) \ *string-- = '-'; \ else if (showsign) \ *string-- = '+'; \ else if (space) \ *string-- = ' '; \ \ width -= workend - string; \ outstring (string + 1, workend - string); \ \ PAD (' '); \ break; \ } \ \ LABEL (form_float): \ { \ /* Floating-point number. This is handled by printf_fp.c. */ \ extern int __printf_fp __P ((FILE *, const struct printf_info *, \ const void **const)); \ const void *ptr; \ int function_done; \ \ if (fspec == NULL) \ { \ struct printf_info info = { prec: prec, \ width: width, \ spec: spec, \ is_long_double: is_long_double, \ is_short: is_short, \ is_long: is_long, \ alt: alt, \ space: space, \ left: left, \ showsign: showsign, \ group: group, \ pad: pad, \ extra: 0 }; \ \ if (is_long_double) \ the_arg.pa_long_double = va_arg (ap, long double); \ else \ the_arg.pa_double = va_arg (ap, double); \ ptr = (const void *) &the_arg; \ \ function_done = __printf_fp (s, &info, &ptr); \ } \ else \ { \ ptr = (const void *) &args_value[fspec->data_arg]; \ \ function_done = __printf_fp (s, &fspec->info, &ptr); \ } \ \ if (function_done < 0) \ /* Error in print handler. */ \ return -1; \ \ done += function_done; \ } \ break; \ \ LABEL (form_character): \ /* Character. */ \ if (is_long) \ goto LABEL (form_wcharacter); \ --width; /* Account for the character itself. */ \ if (!left) \ PAD (' '); \ if (fspec == NULL) \ outchar ((unsigned char) va_arg (ap, int)); /* Promoted. */ \ else \ outchar ((unsigned char) args_value[fspec->data_arg].pa_char); \ if (left) \ PAD (' '); \ break; \ \ LABEL (form_wcharacter): \ { \ /* Wide character. */ \ char buf[MB_CUR_MAX]; \ mbstate_t mbstate; \ size_t len; \ \ len = __wcrtomb (buf, (fspec == NULL ? va_arg (ap, wint_t) \ : args_value[fspec->data_arg].pa_wchar), \ &mbstate); \ width -= len; \ if (!left) \ PAD (' '); \ outstring (buf, len); \ if (left) \ PAD (' '); \ } \ break; \ \ LABEL (form_string): \ { \ size_t len; \ \ /* The string argument could in fact be `char *' or `wchar_t *'. \ But this should not make a difference here. */ \ if (fspec == NULL) \ string = (char *) va_arg (ap, const char *); \ else \ string = (char *) args_value[fspec->data_arg].pa_string; \ \ /* Entry point for printing other strings. */ \ LABEL (print_string): \ \ if (string == NULL) \ { \ /* Write "(null)" if there's space. */ \ if (prec == -1 || prec >= (int) sizeof (null) - 1) \ { \ string = (char *) null; \ len = sizeof (null) - 1; \ } \ else \ { \ string = (char *) ""; \ len = 0; \ } \ } \ else if (!is_long && spec != L_('S')) \ { \ if (prec != -1) \ /* Search for the end of the string, but don't search past \ the length specified by the precision. */ \ len = strnlen (string, prec); \ else \ len = strlen (string); \ } \ else \ { \ const wchar_t *s2 = (const wchar_t *) string; \ mbstate_t mbstate; \ \ len = __wcsrtombs (NULL, &s2, 0, &mbstate); \ if (len == (size_t) -1) \ /* Illegal wide-character string. */ \ return -1; \ \ s2 = (const wchar_t *) string; \ string = alloca (len + 1); \ (void) __wcsrtombs (string, &s2, prec != -1 ? prec : UINT_MAX, \ &mbstate); \ } \ \ if ((width -= len) < 0) \ { \ outstring (string, len); \ break; \ } \ \ if (!left) \ PAD (' '); \ outstring (string, len); \ if (left) \ PAD (' '); \ } \ break; \ \ LABEL (form_pointer): \ /* Generic pointer. */ \ { \ const void *ptr; \ if (fspec == NULL) \ ptr = va_arg (ap, void *); \ else \ ptr = args_value[fspec->data_arg].pa_pointer; \ if (ptr != NULL) \ { \ /* If the pointer is not NULL, write it as a %#x spec. */ \ base = 16; \ number.word = (unsigned long int) ptr; \ is_negative = 0; \ alt = 1; \ group = 0; \ spec = 'x'; \ goto LABEL (number); \ } \ else \ { \ /* Write "(nil)" for a nil pointer. */ \ string = (char *) "(nil)"; \ /* Make sure the full string "(nil)" is printed. */ \ if (prec < 5) \ prec = 5; \ is_long = 0; /* This is no wide-char string. */ \ goto LABEL (print_string); \ } \ } \ /* NOTREACHED */ \ \ LABEL (form_number): \ /* Answer the count of characters written. */ \ if (fspec == NULL) \ if (is_longlong) \ *(long long int *) va_arg (ap, void *) = done; \ else if (is_long) \ *(long int *) va_arg (ap, void *) = done; \ else if (!is_short) \ *(int *) va_arg (ap, void *) = done; \ else \ *(short int *) va_arg (ap, void *) = done; \ else \ if (is_longlong) \ *(long long int *) args_value[fspec->data_arg].pa_pointer = done; \ else if (is_long) \ *(long int *) args_value[fspec->data_arg].pa_pointer = done; \ else if (!is_short) \ *(int *) args_value[fspec->data_arg].pa_pointer = done; \ else \ *(short int *) args_value[fspec->data_arg].pa_pointer = done; \ break; \ \ LABEL (form_strerror): \ /* Print description of error ERRNO. */ \ { \ extern char *_strerror_internal __P ((int, char *buf, size_t)); \ \ string = (char *) \ _strerror_internal (save_errno, work_buffer, sizeof work_buffer); \ } \ is_long = 0; /* This is no wide-char string. */ \ goto LABEL (print_string) /* Sanity check of arguments. */ ARGCHECK (s, format); if (UNBUFFERED_P (s)) /* Use a helper function which will allocate a local temporary buffer for the stream and then call us again. */ return buffered_vfprintf (s, format, ap); /* Initialize local variables. */ done = 0; grouping = (const char *) -1; ap_save = ap; nspecs_done = 0; /* Find the first format specifier. */ f = lead_str_end = find_spec (format, &mbstate); /* Lock stream. */ #ifdef USE_IN_LIBIO __libc_cleanup_region_start ((void (*) (void *)) &_IO_funlockfile, s); _IO_flockfile (s); #else __libc_cleanup_region_start ((void (*) (void *)) &__funlockfile, s); __flockfile (s); #endif /* Write the literal text before the first format. */ outstring ((const UCHAR_T *) format, lead_str_end - (const UCHAR_T *) format); /* If we only have to print a simple string, return now. */ if (*f == L_('\0')) goto all_done; /* Process whole format string. */ do { #define REF(Name) &&do_##Name #define LABEL(Name) do_##Name STEP0_3_TABLE; STEP4_TABLE; union printf_arg *args_value; /* This is not used here but ... */ int is_negative; /* Flag for negative number. */ union { unsigned long long int longlong; unsigned long int word; } number; int base; union printf_arg the_arg; char *string; /* Pointer to argument string. */ int alt = 0; /* Alternate format. */ int space = 0; /* Use space prefix if no sign is needed. */ int left = 0; /* Left-justify output. */ int showsign = 0; /* Always begin with plus or minus sign. */ int group = 0; /* Print numbers according grouping rules. */ int is_long_double = 0; /* Argument is long double/ long long int. */ int is_short = 0; /* Argument is long int. */ int is_long = 0; /* Argument is short int. */ int width = 0; /* Width of output; 0 means none specified. */ int prec = -1; /* Precision of output; -1 means none specified. */ char pad = ' '; /* Padding character. */ CHAR_T spec; /* Get current character in format string. */ JUMP (*++f, step0_jumps); /* ' ' flag. */ LABEL (flag_space): space = 1; JUMP (*++f, step0_jumps); /* '+' flag. */ LABEL (flag_plus): showsign = 1; JUMP (*++f, step0_jumps); /* The '-' flag. */ LABEL (flag_minus): left = 1; pad = L_(' '); JUMP (*++f, step0_jumps); /* The '#' flag. */ LABEL (flag_hash): alt = 1; JUMP (*++f, step0_jumps); /* The '0' flag. */ LABEL (flag_zero): if (!left) pad = L_('0'); JUMP (*++f, step0_jumps); /* The '\'' flag. */ LABEL (flag_quote): group = 1; /* XXX Completely wrong. Use wctob. */ if (grouping == (const char *) -1) { /* Figure out the thousands separator character. */ if (mbtowc (&thousands_sep, _NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP), strlen (_NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP))) <= 0) thousands_sep = (wchar_t) *_NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP); grouping = _NL_CURRENT (LC_NUMERIC, GROUPING); if (*grouping == '\0' || *grouping == CHAR_MAX || thousands_sep == L'\0') grouping = NULL; } JUMP (*++f, step0_jumps); /* Get width from argument. */ LABEL (width_asterics): { const UCHAR_T *tmp; /* Temporary value. */ tmp = ++f; if (ISDIGIT (*tmp) && read_int (&tmp) && *tmp == L_('$')) /* The width comes from a positional parameter. */ goto do_positional; width = va_arg (ap, int); /* Negative width means left justified. */ if (width < 0) { width = -width; pad = L_(' '); left = 1; } } JUMP (*f, step1_jumps); /* Given width in format string. */ LABEL (width): width = read_int (&f); if (*f == L_('$')) /* 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; JUMP (*f, step2_jumps); /* Process 'h' modifier. No other modifier is allowed to follow. */ LABEL (mod_half): is_short = 1; JUMP (*++f, step4_jumps); /* Process 'l' modifier. There might another 'l' follow. */ LABEL (mod_long): is_long = 1; JUMP (*++f, step3_jumps); /* Process 'L', 'q', or 'll' modifier. No other modifier is allowed to follow. */ LABEL (mod_longlong): is_long_double = 1; JUMP (*++f, step4_jumps); LABEL (mod_size_t): is_longlong = sizeof (size_t) > sizeof (unsigned long int); is_long = sizeof (size_t) > sizeof (unsigned int); JUMP (*++f, step4_jumps); /* Process current format. */ while (1) { process_arg (((struct printf_spec *) NULL)); LABEL (form_unknown): if (spec == L_('\0')) { /* The format string ended before the specifier is complete. */ done = -1; goto all_done; } /* If we are in the fast loop force entering the complicated one. */ goto do_positional; } /* Look for next format specifier. */ f = find_spec ((end_of_spec = ++f), &mbstate); /* Write the following constant string. */ outstring (end_of_spec, f - end_of_spec); } while (*f != L_('\0')); /* Unlock stream and return. */ goto all_done; /* Here starts the more complex loop to handle positional parameters. */ do_positional: { /* Array with information about the needed arguments. This has to be dynamically extensible. */ size_t nspecs = 0; size_t nspecs_max = 32; /* A more or less arbitrary start value. */ struct printf_spec *specs = alloca (nspecs_max * sizeof (struct printf_spec)); /* The number of arguments the format string requests. This will determine the size of the array needed to store the argument attributes. */ size_t nargs = 0; int *args_type; union printf_arg *args_value; /* Positional parameters refer to arguments directly. This could also determine the maximum number of arguments. Track the maximum number. */ size_t max_ref_arg = 0; /* Just a counter. */ size_t cnt; if (grouping == (const char *) -1) { /* XXX Use wctob. But this is incompatible for now. */ /* Figure out the thousands separator character. */ if (mbtowc (&thousands_sep, _NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP), strlen (_NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP))) <= 0) thousands_sep = (wchar_t) *_NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP); grouping = _NL_CURRENT (LC_NUMERIC, GROUPING); if (*grouping == '\0' || *grouping == CHAR_MAX || thousands_sep == L'\0') grouping = NULL; } for (f = lead_str_end; *f != '\0'; f = specs[nspecs++].next_fmt) { if (nspecs >= nspecs_max) { /* Extend the array of format specifiers. */ struct printf_spec *old = specs; nspecs_max *= 2; specs = alloca (nspecs_max * sizeof (struct printf_spec)); if (specs == &old[nspecs]) /* Stack grows up, OLD was the last thing allocated; extend it. */ nspecs_max += nspecs_max / 2; else { /* Copy the old array's elements to the new space. */ memcpy (specs, old, nspecs * sizeof (struct printf_spec)); if (old == &specs[nspecs]) /* Stack grows down, OLD was just below the new SPECS. We can use that space when the new space runs out. */ nspecs_max += nspecs_max / 2; } } /* Parse the format specifier. */ nargs += parse_one_spec (f, nargs, &specs[nspecs], &max_ref_arg, &mbstate); } /* Determine the number of arguments the format string consumes. */ nargs = MAX (nargs, max_ref_arg); /* Allocate memory for the argument descriptions. */ args_type = alloca (nargs * sizeof (int)); memset (args_type, 0, nargs * sizeof (int)); args_value = alloca (nargs * sizeof (union printf_arg)); /* XXX Could do sanity check here: If any element in ARGS_TYPE is still zero after this loop, format is invalid. For now we simply use 0 as the value. */ /* Fill in the types of all the arguments. */ for (cnt = 0; cnt < nspecs; ++cnt) { /* If the width is determined by an argument this is an int. */ if (specs[cnt].width_arg != -1) args_type[specs[cnt].width_arg] = PA_INT; /* If the precision is determined by an argument this is an int. */ if (specs[cnt].prec_arg != -1) args_type[specs[cnt].prec_arg] = PA_INT; switch (specs[cnt].ndata_args) { case 0: /* No arguments. */ break; case 1: /* One argument; we already have the type. */ args_type[specs[cnt].data_arg] = specs[cnt].data_arg_type; break; default: /* We have more than one argument for this format spec. We must call the arginfo function again to determine all the types. */ (void) (*__printf_arginfo_table[specs[cnt].info.spec]) (&specs[cnt].info, specs[cnt].ndata_args, &args_type[specs[cnt].data_arg]); break; } } /* Now we know all the types and the order. Fill in the argument values. */ for (cnt = 0, ap = ap_save; cnt < nargs; ++cnt) switch (args_type[cnt]) { #define T(tag, mem, type) \ case tag: \ args_value[cnt].mem = va_arg (ap, type); \ break T (PA_CHAR, pa_char, int); /* Promoted. */ T (PA_WCHAR, pa_wchar, wint_t); T (PA_INT|PA_FLAG_SHORT, pa_short_int, int); /* Promoted. */ T (PA_INT, pa_int, int); T (PA_INT|PA_FLAG_LONG, pa_long_int, long int); T (PA_INT|PA_FLAG_LONG_LONG, pa_long_long_int, long long int); T (PA_FLOAT, pa_float, double); /* Promoted. */ T (PA_DOUBLE, pa_double, double); T (PA_DOUBLE|PA_FLAG_LONG_DOUBLE, pa_long_double, long double); T (PA_STRING, pa_string, const char *); T (PA_WSTRING, pa_wstring, const wchar_t *); T (PA_POINTER, pa_pointer, void *); #undef T default: if ((args_type[cnt] & PA_FLAG_PTR) != 0) args_value[cnt].pa_pointer = va_arg (ap, void *); else args_value[cnt].pa_long_double = 0.0; break; } /* Now walk through all format specifiers and process them. */ for (; (size_t) nspecs_done < nspecs; ++nspecs_done) { #undef REF #define REF(Name) &&do2_##Name #undef LABEL #define LABEL(Name) do2_##Name STEP4_TABLE; int is_negative; union { unsigned long long int longlong; unsigned long int word; } number; int base; union printf_arg the_arg; char *string; /* Pointer to argument string. */ /* Fill variables from values in struct. */ int alt = specs[nspecs_done].info.alt; int space = specs[nspecs_done].info.space; int left = specs[nspecs_done].info.left; int showsign = specs[nspecs_done].info.showsign; int group = specs[nspecs_done].info.group; int is_long_double = specs[nspecs_done].info.is_long_double; int is_short = specs[nspecs_done].info.is_short; int is_long = specs[nspecs_done].info.is_long; int width = specs[nspecs_done].info.width; int prec = specs[nspecs_done].info.prec; char pad = specs[nspecs_done].info.pad; CHAR_T spec = specs[nspecs_done].info.spec; /* Fill in last information. */ if (specs[nspecs_done].width_arg != -1) { /* Extract the field width from an argument. */ specs[nspecs_done].info.width = args_value[specs[nspecs_done].width_arg].pa_int; if (specs[nspecs_done].info.width < 0) /* If the width value is negative left justification is selected and the value is taken as being positive. */ { specs[nspecs_done].info.width *= -1; left = specs[nspecs_done].info.left = 1; } width = specs[nspecs_done].info.width; } if (specs[nspecs_done].prec_arg != -1) { /* Extract the precision from an argument. */ specs[nspecs_done].info.prec = args_value[specs[nspecs_done].prec_arg].pa_int; if (specs[nspecs_done].info.prec < 0) /* If the precision is negative the precision is omitted. */ specs[nspecs_done].info.prec = -1; prec = specs[nspecs_done].info.prec; } /* Process format specifiers. */ while (1) { JUMP (spec, step4_jumps); process_arg ((&specs[nspecs_done])); LABEL (form_unknown): { extern printf_function **__printf_function_table; int function_done; printf_function *function; unsigned int i; const void **ptr; function = (__printf_function_table == NULL ? NULL : __printf_function_table[specs[nspecs_done].info.spec]); if (function == NULL) function = &printf_unknown; ptr = alloca (specs[nspecs_done].ndata_args * sizeof (const void *)); /* Fill in an array of pointers to the argument values. */ for (i = 0; i < specs[nspecs_done].ndata_args; ++i) ptr[i] = &args_value[specs[nspecs_done].data_arg + i]; /* Call the function. */ function_done = (*function) (s, &specs[nspecs_done].info, ptr); /* If an error occurred we don't have information about # of chars. */ if (function_done < 0) { done = -1; goto all_done; } done += function_done; } break; } /* Write the following constant string. */ outstring (specs[nspecs_done].end_of_fmt, specs[nspecs_done].next_fmt - specs[nspecs_done].end_of_fmt); } } all_done: /* Unlock the stream. */ __libc_cleanup_region_end (1); return done; } #ifdef USE_IN_LIBIO # undef vfprintf # ifdef strong_alias /* This is for glibc. */ strong_alias (_IO_vfprintf, vfprintf); # else # if defined __ELF__ || defined __GNU_LIBRARY__ # include # ifdef weak_alias weak_alias (_IO_vfprintf, vfprintf); # endif # endif # endif #endif /* Handle an unknown format specifier. This prints out a canonicalized representation of the format spec itself. */ static int printf_unknown (FILE *s, const struct printf_info *info, const void *const *args) { int done = 0; char work_buffer[BUFSIZ]; register char *w; outchar ('%'); if (info->alt) outchar ('#'); if (info->group) outchar ('\''); if (info->showsign) outchar ('+'); else if (info->space) outchar (' '); if (info->left) outchar ('-'); if (info->pad == '0') outchar ('0'); if (info->width != 0) { w = _itoa_word (info->width, workend + 1, 10, 0); while (++w <= workend) outchar (*w); } if (info->prec != -1) { outchar ('.'); w = _itoa_word (info->prec, workend + 1, 10, 0); while (++w <= workend) outchar (*w); } if (info->spec != '\0') outchar (info->spec); 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 * group_number (CHAR_T *w, CHAR_T *rear_ptr, const CHAR_T *grouping, wchar_t thousands_sep) { int len; char *src, *s; /* We treat all negative values like CHAR_MAX. */ if (*grouping == CHAR_MAX || *grouping <= 0) /* No grouping should be done. */ return w; len = *grouping; /* Copy existing string so that nothing gets overwritten. */ src = (char *) alloca (rear_ptr - w); memcpy (src, w + 1, rear_ptr - w); s = &src[rear_ptr - w - 1]; w = rear_ptr; /* Process all characters in the string. */ while (s >= src) { *w-- = *s--; if (--len == 0 && s >= src) { /* A new group begins. */ *w-- = thousands_sep; len = *grouping++; if (*grouping == '\0') /* The previous grouping repeats ad infinitum. */ --grouping; else if (*grouping == CHAR_MAX || *grouping < 0) { /* No further grouping to be done. Copy the rest of the number. */ do *w-- = *s--; while (s >= src); break; } } } return w; } #ifdef USE_IN_LIBIO /* Helper "class" for `fprintf to unbuffered': creates a temporary buffer. */ struct helper_file { struct _IO_FILE_plus _f; _IO_FILE *_put_stream; #ifdef _IO_MTSAFE_IO _IO_lock_t lock; #endif }; static int _IO_helper_overflow (_IO_FILE *s, int c) { _IO_FILE *target = ((struct helper_file*) s)->_put_stream; int used = s->_IO_write_ptr - s->_IO_write_base; if (used) { _IO_size_t written = _IO_sputn (target, s->_IO_write_base, used); s->_IO_write_ptr -= written; } return PUTC (c, s); } static const struct _IO_jump_t _IO_helper_jumps = { JUMP_INIT_DUMMY, JUMP_INIT (finish, _IO_default_finish), JUMP_INIT (overflow, _IO_helper_overflow), JUMP_INIT (underflow, _IO_default_underflow), JUMP_INIT (uflow, _IO_default_uflow), JUMP_INIT (pbackfail, _IO_default_pbackfail), JUMP_INIT (xsputn, _IO_default_xsputn), JUMP_INIT (xsgetn, _IO_default_xsgetn), JUMP_INIT (seekoff, _IO_default_seekoff), JUMP_INIT (seekpos, _IO_default_seekpos), JUMP_INIT (setbuf, _IO_default_setbuf), JUMP_INIT (sync, _IO_default_sync), JUMP_INIT (doallocate, _IO_default_doallocate), JUMP_INIT (read, _IO_default_read), JUMP_INIT (write, _IO_default_write), JUMP_INIT (seek, _IO_default_seek), JUMP_INIT (close, _IO_default_close), JUMP_INIT (stat, _IO_default_stat) }; static int buffered_vfprintf (register _IO_FILE *s, const CHAR_T *format, _IO_va_list args) { char buf[_IO_BUFSIZ]; struct helper_file helper; register _IO_FILE *hp = (_IO_FILE *) &helper; int result, to_flush; /* Initialize helper. */ helper._put_stream = s; hp->_IO_write_base = buf; hp->_IO_write_ptr = buf; hp->_IO_write_end = buf + sizeof buf; hp->_IO_file_flags = _IO_MAGIC|_IO_NO_READS; #ifdef _IO_MTSAFE_IO hp->_lock = &helper.lock; __libc_lock_init (*hp->_lock); #endif _IO_JUMPS (hp) = (struct _IO_jump_t *) &_IO_helper_jumps; /* Now print to helper instead. */ result = _IO_vfprintf (hp, format, args); /* Now flush anything from the helper to the S. */ if ((to_flush = hp->_IO_write_ptr - hp->_IO_write_base) > 0) { if ((int) _IO_sputn (s, hp->_IO_write_base, to_flush) != to_flush) return -1; } return result; } #else /* !USE_IN_LIBIO */ static int buffered_vfprintf (register FILE *s, const CHAR_T *format, va_list args) { char buf[BUFSIZ]; int result; s->__bufp = s->__buffer = buf; s->__bufsize = sizeof buf; s->__put_limit = s->__buffer + s->__bufsize; s->__get_limit = s->__buffer; /* Now use buffer to print. */ result = vfprintf (s, format, args); if (fflush (s) == EOF) result = -1; s->__buffer = s->__bufp = s->__get_limit = s->__put_limit = NULL; s->__bufsize = 0; return result; } /* Pads string with given number of a specified character. This code is taken from iopadn.c of the GNU I/O library. */ #define PADSIZE 16 static const CHAR_T blanks[PADSIZE] = { L_(' '), L_(' '), L_(' '), L_(' '), L_(' '), L_(' '), L_(' '), L_(' '), L_(' '), L_(' '), L_(' '), L_(' '), L_(' '), L_(' '), L_(' '), L_(' ') }; static const CHAR_T zeroes[PADSIZE] = { L_('0'), L_('0'), L_('0'), L_('0'), L_('0'), L_('0'), L_('0'), L_('0'), L_('0'), L_('0'), L_('0'), L_('0'), L_('0'), L_('0'), L_('0'), L_('0') }; ssize_t #ifndef COMPILE_WPRINTF __printf_pad (FILE *s, char pad, size_t count) #else __wprintf_pad (FILE *s, wchar_t pad, size_t count) #endif { const CHAR_T *padptr; register size_t i; padptr = pad == L_(' ') ? blanks : zeroes; for (i = count; i >= PADSIZE; i -= PADSIZE) if (PUT (s, padptr, PADSIZE) != PADSIZE) return -1; if (i > 0) if (PUT (s, padptr, i) != i) return -1; return count; } #undef PADSIZE #endif /* USE_IN_LIBIO */