stdio-common/vfprintf.c

   1 /* Copyright (C) 1991, 92, 93, 94, 95, 96 Free Software Foundation, Inc.
   2 This file is part of the GNU C Library.
   3
   4 The GNU C Library is free software; you can redistribute it and/or
   5 modify it under the terms of the GNU Library General Public License as
   6 published by the Free Software Foundation; either version 2 of the
   7 License, or (at your option) any later version.
   8
   9 The GNU C Library is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12 Library General Public License for more details.
  13
  14 You should have received a copy of the GNU Library General Public
  15 License along with the GNU C Library; see the file COPYING.LIB.  If
  16 not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17 Boston, MA 02111-1307, USA.  */
  18
  19 #include <ctype.h>
  20 #include <limits.h>
  21 #include <printf.h>
  22 #include <stdarg.h>
  23 #include <stdlib.h>
  24 #include <errno.h>
  25 #include <wchar.h>
  26 #include "_itoa.h"
  27 #include "../locale/localeinfo.h"
  28
  29 /* This code is shared between the standard stdio implementation found
  30    in GNU C library and the libio implementation originally found in
  31    GNU libg++.
  32
  33    Beside this it is also shared between the normal and wide character
  34    implementation as defined in ISO/IEC 9899:1990/Amendment 1:1995.  */
  35
  36 #ifndef COMPILE_WPRINTF
  37 # define CHAR_T         char
  38 # define UCHAR_T        unsigned char
  39 # define INT_T          int
  40 # define L_(Str)        Str
  41 # define ISDIGIT(Ch)    isdigit (Ch)
  42
  43 # ifdef USE_IN_LIBIO
  44 #  define PUT(F, S, N)  _IO_sputn (F, S, N)
  45 #  define PAD(Padchar)                                                        \
  46   if (width > 0)                                                              \
  47     done += _IO_padn (s, Padchar, width)
  48 # else
  49 #  define PUTC(C, F)    putc (C, F)
  50 ssize_t __printf_pad __P ((FILE *, char pad, size_t n));
  51 # define PAD(Padchar)                                                         \
  52   if (width > 0)                                                              \
  53     { if (__printf_pad (s, Padchar, width) == -1)                             \
  54         return -1; else done += width; }
  55 # endif
  56 #else
  57 # define vfprintf       vfwprintf
  58 # define CHAR_T         wchar_t
  59 # define UCHAR_T        uwchar_t
  60 # define INT_T          wint_t
  61 # define L_(Str)        L##Str
  62 # define ISDIGIT(Ch)    iswdigit (Ch)
  63
  64 # ifdef USE_IN_LIBIO
  65 #  define PUT(F, S, N)  _IO_sputn (F, S, N)
  66 #  define PAD(Padchar)                                                        \
  67   if (width > 0)                                                              \
  68     done += _IO_wpadn (s, Padchar, width)
  69 # else
  70 #  define PUTC(C, F)    wputc (C, F)
  71 ssize_t __wprintf_pad __P ((FILE *, wchar_t pad, size_t n));
  72 #  define PAD(Padchar)                                                        \
  73   if (width > 0)                                                              \
  74     { if (__wprintf_pad (s, Padchar, width) == -1)                            \
  75         return -1; else done += width; }
  76 # endif
  77 #endif
  78
  79 /* Include the shared code for parsing the format string.  */
  80 #include "printf-parse.h"
  81
  82
  83 #ifdef USE_IN_LIBIO
  84 /* This code is for use in libio.  */
  85 # include <libioP.h>
  86 # define PUTC(C, F)     _IO_putc_unlocked (C, F)
  87 # define vfprintf       _IO_vfprintf
  88 # define size_t         _IO_size_t
  89 # define FILE           _IO_FILE
  90 # define va_list        _IO_va_list
  91 # undef BUFSIZ
  92 # define BUFSIZ         _IO_BUFSIZ
  93 # define ARGCHECK(S, Format)                                                  \
  94   do                                                                          \
  95     {                                                                         \
  96       /* Check file argument for consistence.  */                             \
  97       CHECK_FILE (S, -1);                                                     \
  98       if (S->_flags & _IO_NO_WRITES || Format == NULL)                        \
  99         {                                                                     \
 100           MAYBE_SET_EINVAL;                                                   \
 101           return -1;                                                          \
 102         }                                                                     \
 103     } while (0)
 104 # define UNBUFFERED_P(S) ((S)->_IO_file_flags & _IO_UNBUFFERED)
 105 #else /* ! USE_IN_LIBIO */
 106 /* This code is for use in the GNU C library.  */
 107 # include <stdio.h>
 108 # define PUT(F, S, N)   fwrite (S, 1, N, F)
 109 # define ARGCHECK(S, Format)                                                  \
 110   do                                                                          \
 111     {                                                                         \
 112       /* Check file argument for consistence.  */                             \
 113       if (!__validfp(S) || !S->__mode.__write || Format == NULL)              \
 114         {                                                                     \
 115           errno = EINVAL;                                                     \
 116           return -1;                                                          \
 117         }                                                                     \
 118       if (!S->__seen)                                                         \
 119         {                                                                     \
 120           if (__flshfp (S, EOF) == EOF)                                       \
 121             return -1;                                                        \
 122         }                                                                     \
 123     }                                                                         \
 124    while (0)
 125 # define UNBUFFERED_P(s) ((s)->__buffer == NULL)
 126 # define flockfile(S) /* nothing */
 127 # define funlockfile(S) /* nothing */
 128 #endif /* USE_IN_LIBIO */
 129
 130
 131 #define outchar(Ch)                                                           \
 132   do                                                                          \
 133     {                                                                         \
 134       register const int outc = (Ch);                                         \
 135       if (PUTC (outc, s) == EOF)                                              \
 136         return -1;                                                            \
 137       else                                                                    \
 138         ++done;                                                               \
 139     }                                                                         \
 140   while (0)
 141
 142 #define outstring(String, Len)                                                \
 143   do                                                                          \
 144     {                                                                         \
 145       if (PUT (s, String, Len) != Len)                                        \
 146         return -1;                                                            \
 147       done += Len;                                                            \
 148     }                                                                         \
 149   while (0)
 150
 151 /* For handling long_double and longlong we use the same flag.  */
 152 #ifndef is_longlong
 153 # define is_longlong is_long_double
 154 #endif
 155
 156
 157 /* Global variables.  */
 158 static const char null[] = "(null)";
 159
 160
 161 /* Helper function to provide temporary buffering for unbuffered streams.  */
 162 static int buffered_vfprintf __P ((FILE *stream, const CHAR_T *fmt, va_list));
 163
 164 /* Handle unknown format specifier.  */
 165 static int printf_unknown __P ((FILE *, const struct printf_info *,
 166                                 const void *const *));
 167
 168 /* Group digits of number string.  */
 169 static char *group_number __P ((CHAR_T *, CHAR_T *, const CHAR_T *, wchar_t));
 170
 171
 172 /* The function itself.  */
 173 int
 174 vfprintf (FILE *s, const CHAR_T *format, va_list ap)
 175 {
 176   /* The character used as thousands separator.  */
 177   wchar_t thousands_sep;
 178
 179   /* The string describing the size of groups of digits.  */
 180   const char *grouping;
 181
 182   /* Place to accumulate the result.  */
 183   int done;
 184
 185   /* Current character in format string.  */
 186   const UCHAR_T *f;
 187
 188   /* End of leading constant string.  */
 189   const UCHAR_T *lead_str_end;
 190
 191   /* Points to next format specifier.  */
 192   const UCHAR_T *end_of_spec;
 193
 194   /* Buffer intermediate results.  */
 195   char work_buffer[1000];
 196 #define workend (&work_buffer[sizeof (work_buffer) - 1])
 197
 198   /* State for restartable multibyte character handling functions.  */
 199   mbstate_t mbstate;
 200
 201   /* We have to save the original argument pointer.  */
 202   va_list ap_save;
 203
 204   /* Count number of specifiers we already processed.  */
 205   int nspecs_done;
 206
 207
 208   /* This table maps a character into a number representing a
 209      class.  In each step there is a destination label for each
 210      class.  */
 211   static const int jump_table[] =
 212   {
 213     /* ' ' */  1,            0,            0, /* '#' */  4,
 214                0, /* '%' */ 14,            0, /* '\''*/  6,
 215                0,            0, /* '*' */  7, /* '+' */  2,
 216                0, /* '-' */  3, /* '.' */  9,            0,
 217     /* '0' */  5, /* '1' */  8, /* '2' */  8, /* '3' */  8,
 218     /* '4' */  8, /* '5' */  8, /* '6' */  8, /* '7' */  8,
 219     /* '8' */  8, /* '9' */  8,            0,            0,
 220                0,            0,            0,            0,
 221                0,            0,            0,            0,
 222                0, /* 'E' */ 19,            0, /* 'G' */ 19,
 223                0,            0,            0,            0,
 224     /* 'L' */ 12,            0,            0,            0,
 225                0,            0,            0,            0,
 226                0,            0,            0,            0,
 227     /* 'X' */ 18,            0, /* 'Z' */ 13,            0,
 228                0,            0,            0,            0,
 229                0,            0,            0, /* 'c' */ 20,
 230     /* 'd' */ 15, /* 'e' */ 19, /* 'f' */ 19, /* 'g' */ 19,
 231     /* 'h' */ 10, /* 'i' */ 15,            0,            0,
 232     /* 'l' */ 11, /* 'm' */ 24, /* 'n' */ 23, /* 'o' */ 17,
 233     /* 'p' */ 22, /* 'q' */ 12,            0, /* 's' */ 21,
 234                0, /* 'u' */ 16,            0,            0,
 235     /* 'x' */ 18
 236   };
 237
 238 #define NOT_IN_JUMP_RANGE(Ch) ((Ch) < ' ' || (Ch) > 'x')
 239 #define CHAR_CLASS(Ch) (jump_table[(int) (Ch) - ' '])
 240 #define JUMP(ChExpr, table)                                                   \
 241       do                                                                      \
 242         {                                                                     \
 243           const void *ptr;                                                    \
 244           spec = (ChExpr);                                                    \
 245           ptr = NOT_IN_JUMP_RANGE (spec) ? REF (form_unknown)                 \
 246             : table[CHAR_CLASS (spec)];                                       \
 247           goto *ptr;                                                          \
 248         }                                                                     \
 249       while (0)
 250
 251 #define STEP0_3_TABLE                                                         \
 252     /* Step 0: at the beginning.  */                                          \
 253     static const void *step0_jumps[25] =                                      \
 254     {                                                                         \
 255       REF (form_unknown),                                                     \
 256       REF (flag_space),         /* for ' ' */                                 \
 257       REF (flag_plus),          /* for '+' */                                 \
 258       REF (flag_minus),         /* for '-' */                                 \
 259       REF (flag_hash),          /* for '<hash>' */                            \
 260       REF (flag_zero),          /* for '0' */                                 \
 261       REF (flag_quote),         /* for '\'' */                                \
 262       REF (width_asterics),     /* for '*' */                                 \
 263       REF (width),              /* for '1'...'9' */                           \
 264       REF (precision),          /* for '.' */                                 \
 265       REF (mod_half),           /* for 'h' */                                 \
 266       REF (mod_long),           /* for 'l' */                                 \
 267       REF (mod_longlong),       /* for 'L', 'q' */                            \
 268       REF (mod_size_t),         /* for 'Z' */                                 \
 269       REF (form_percent),       /* for '%' */                                 \
 270       REF (form_integer),       /* for 'd', 'i' */                            \
 271       REF (form_unsigned),      /* for 'u' */                                 \
 272       REF (form_octal),         /* for 'o' */                                 \
 273       REF (form_hexa),          /* for 'X', 'x' */                            \
 274       REF (form_float),         /* for 'E', 'e', 'f', 'G', 'g' */             \
 275       REF (form_character),     /* for 'c' */                                 \
 276       REF (form_string),        /* for 's' */                                 \
 277       REF (form_pointer),       /* for 'p' */                                 \
 278       REF (form_number),        /* for 'n' */                                 \
 279       REF (form_strerror)       /* for 'm' */                                 \
 280     };                                                                        \
 281     /* Step 1: after processing width.  */                                    \
 282     static const void *step1_jumps[25] =                                      \
 283     {                                                                         \
 284       REF (form_unknown),                                                     \
 285       REF (form_unknown),       /* for ' ' */                                 \
 286       REF (form_unknown),       /* for '+' */                                 \
 287       REF (form_unknown),       /* for '-' */                                 \
 288       REF (form_unknown),       /* for '<hash>' */                            \
 289       REF (form_unknown),       /* for '0' */                                 \
 290       REF (form_unknown),       /* for '\'' */                                \
 291       REF (form_unknown),       /* for '*' */                                 \
 292       REF (form_unknown),       /* for '1'...'9' */                           \
 293       REF (precision),          /* for '.' */                                 \
 294       REF (mod_half),           /* for 'h' */                                 \
 295       REF (mod_long),           /* for 'l' */                                 \
 296       REF (mod_longlong),       /* for 'L', 'q' */                            \
 297       REF (mod_size_t),         /* for 'Z' */                                 \
 298       REF (form_percent),       /* for '%' */                                 \
 299       REF (form_integer),       /* for 'd', 'i' */                            \
 300       REF (form_unsigned),      /* for 'u' */                                 \
 301       REF (form_octal),         /* for 'o' */                                 \
 302       REF (form_hexa),          /* for 'X', 'x' */                            \
 303       REF (form_float),         /* for 'E', 'e', 'f', 'G', 'g' */             \
 304       REF (form_character),     /* for 'c' */                                 \
 305       REF (form_string),        /* for 's' */                                 \
 306       REF (form_pointer),       /* for 'p' */                                 \
 307       REF (form_number),        /* for 'n' */                                 \
 308       REF (form_strerror)       /* for 'm' */                                 \
 309     };                                                                        \
 310     /* Step 2: after processing precision.  */                                \
 311     static const void *step2_jumps[25] =                                      \
 312     {                                                                         \
 313       REF (form_unknown),                                                     \
 314       REF (form_unknown),       /* for ' ' */                                 \
 315       REF (form_unknown),       /* for '+' */                                 \
 316       REF (form_unknown),       /* for '-' */                                 \
 317       REF (form_unknown),       /* for '<hash>' */                            \
 318       REF (form_unknown),       /* for '0' */                                 \
 319       REF (form_unknown),       /* for '\'' */                                \
 320       REF (form_unknown),       /* for '*' */                                 \
 321       REF (form_unknown),       /* for '1'...'9' */                           \
 322       REF (form_unknown),       /* for '.' */                                 \
 323       REF (mod_half),           /* for 'h' */                                 \
 324       REF (mod_long),           /* for 'l' */                                 \
 325       REF (mod_longlong),       /* for 'L', 'q' */                            \
 326       REF (mod_size_t),         /* for 'Z' */                                 \
 327       REF (form_percent),       /* for '%' */                                 \
 328       REF (form_integer),       /* for 'd', 'i' */                            \
 329       REF (form_unsigned),      /* for 'u' */                                 \
 330       REF (form_octal),         /* for 'o' */                                 \
 331       REF (form_hexa),          /* for 'X', 'x' */                            \
 332       REF (form_float),         /* for 'E', 'e', 'f', 'G', 'g' */             \
 333       REF (form_character),     /* for 'c' */                                 \
 334       REF (form_string),        /* for 's' */                                 \
 335       REF (form_pointer),       /* for 'p' */                                 \
 336       REF (form_number),        /* for 'n' */                                 \
 337       REF (form_strerror)       /* for 'm' */                                 \
 338     };                                                                        \
 339     /* Step 3: after processing first 'l' modifier.  */                       \
 340     static const void *step3_jumps[25] =                                      \
 341     {                                                                         \
 342       REF (form_unknown),                                                     \
 343       REF (form_unknown),       /* for ' ' */                                 \
 344       REF (form_unknown),       /* for '+' */                                 \
 345       REF (form_unknown),       /* for '-' */                                 \
 346       REF (form_unknown),       /* for '<hash>' */                            \
 347       REF (form_unknown),       /* for '0' */                                 \
 348       REF (form_unknown),       /* for '\'' */                                \
 349       REF (form_unknown),       /* for '*' */                                 \
 350       REF (form_unknown),       /* for '1'...'9' */                           \
 351       REF (form_unknown),       /* for '.' */                                 \
 352       REF (form_unknown),       /* for 'h' */                                 \
 353       REF (mod_longlong),       /* for 'l' */                                 \
 354       REF (form_unknown),       /* for 'L', 'q' */                            \
 355       REF (form_unknown),       /* for 'Z' */                                 \
 356       REF (form_percent),       /* for '%' */                                 \
 357       REF (form_integer),       /* for 'd', 'i' */                            \
 358       REF (form_unsigned),      /* for 'u' */                                 \
 359       REF (form_octal),         /* for 'o' */                                 \
 360       REF (form_hexa),          /* for 'X', 'x' */                            \
 361       REF (form_float),         /* for 'E', 'e', 'f', 'G', 'g' */             \
 362       REF (form_character),     /* for 'c' */                                 \
 363       REF (form_string),        /* for 's' */                                 \
 364       REF (form_pointer),       /* for 'p' */                                 \
 365       REF (form_number),        /* for 'n' */                                 \
 366       REF (form_strerror)       /* for 'm' */                                 \
 367     }
 368
 369 #define STEP4_TABLE                                                           \
 370     /* Step 4: processing format specifier.  */                               \
 371     static const void *step4_jumps[25] =                                      \
 372     {                                                                         \
 373       REF (form_unknown),                                                     \
 374       REF (form_unknown),       /* for ' ' */                                 \
 375       REF (form_unknown),       /* for '+' */                                 \
 376       REF (form_unknown),       /* for '-' */                                 \
 377       REF (form_unknown),       /* for '<hash>' */                            \
 378       REF (form_unknown),       /* for '0' */                                 \
 379       REF (form_unknown),       /* for '\'' */                                \
 380       REF (form_unknown),       /* for '*' */                                 \
 381       REF (form_unknown),       /* for '1'...'9' */                           \
 382       REF (form_unknown),       /* for '.' */                                 \
 383       REF (form_unknown),       /* for 'h' */                                 \
 384       REF (form_unknown),       /* for 'l' */                                 \
 385       REF (form_unknown),       /* for 'L', 'q' */                            \
 386       REF (form_unknown),       /* for 'Z' */                                 \
 387       REF (form_percent),       /* for '%' */                                 \
 388       REF (form_integer),       /* for 'd', 'i' */                            \
 389       REF (form_unsigned),      /* for 'u' */                                 \
 390       REF (form_octal),         /* for 'o' */                                 \
 391       REF (form_hexa),          /* for 'X', 'x' */                            \
 392       REF (form_float),         /* for 'E', 'e', 'f', 'G', 'g' */             \
 393       REF (form_character),     /* for 'c' */                                 \
 394       REF (form_string),        /* for 's' */                                 \
 395       REF (form_pointer),       /* for 'p' */                                 \
 396       REF (form_number),        /* for 'n' */                                 \
 397       REF (form_strerror)       /* for 'm' */                                 \
 398     }
 399
 400
 401 #define process_arg(fspec)                                                    \
 402       /* Start real work.  We know about all flag and modifiers and           \
 403          now process the wanted format specifier.  */                         \
 404     LABEL (form_percent):                                                     \
 405       /* Write a literal "%".  */                                             \
 406       outchar ('%');                                                          \
 407       break;                                                                  \
 408                                                                               \
 409     LABEL (form_integer):                                                     \
 410       /* Signed decimal integer.  */                                          \
 411       base = 10;                                                              \
 412                                                                               \
 413       if (is_longlong)                                                        \
 414         {                                                                     \
 415           long long int signed_number;                                        \
 416                                                                               \
 417           if (fspec == NULL)                                                  \
 418             signed_number = va_arg (ap, long long int);                       \
 419           else                                                                \
 420             signed_number = args_value[fspec->data_arg].pa_long_long_int;     \
 421                                                                               \
 422           is_negative = signed_number < 0;                                    \
 423           number.longlong = is_negative ? (- signed_number) : signed_number;  \
 424                                                                               \
 425           goto LABEL (longlong_number);                                       \
 426         }                                                                     \
 427       else                                                                    \
 428         {                                                                     \
 429           long int signed_number;                                             \
 430                                                                               \
 431           if (fspec == NULL)                                                  \
 432             if (is_long)                                                      \
 433               signed_number = va_arg (ap, long int);                          \
 434             else        /* `short int' will be promoted to `int'.  */         \
 435               signed_number = va_arg (ap, int);                               \
 436           else                                                                \
 437             if (is_long)                                                      \
 438               signed_number = args_value[fspec->data_arg].pa_long_int;        \
 439             else                                                              \
 440               signed_number = args_value[fspec->data_arg].pa_int;             \
 441                                                                               \
 442           is_negative = signed_number < 0;                                    \
 443           number.word = is_negative ? (- signed_number) : signed_number;      \
 444                                                                               \
 445           goto LABEL (number);                                                \
 446         }                                                                     \
 447       /* NOTREACHED */                                                        \
 448                                                                               \
 449     LABEL (form_unsigned):                                                    \
 450       /* Unsigned decimal integer.  */                                        \
 451       base = 10;                                                              \
 452       goto LABEL (unsigned_number);                                           \
 453       /* NOTREACHED */                                                        \
 454                                                                               \
 455     LABEL (form_octal):                                                       \
 456       /* Unsigned octal integer.  */                                          \
 457       base = 8;                                                               \
 458       goto LABEL (unsigned_number);                                           \
 459       /* NOTREACHED */                                                        \
 460                                                                               \
 461     LABEL (form_hexa):                                                        \
 462       /* Unsigned hexadecimal integer.  */                                    \
 463       base = 16;                                                              \
 464                                                                               \
 465     LABEL (unsigned_number):      /* Unsigned number of base BASE.  */        \
 466                                                                               \
 467       /* ANSI specifies the `+' and ` ' flags only for signed                 \
 468          conversions.  */                                                     \
 469       is_negative = 0;                                                        \
 470       showsign = 0;                                                           \
 471       space = 0;                                                              \
 472                                                                               \
 473       if (is_longlong)                                                        \
 474         {                                                                     \
 475           if (fspec == NULL)                                                  \
 476             number.longlong = va_arg (ap, unsigned long long int);            \
 477           else                                                                \
 478             number.longlong = args_value[fspec->data_arg].pa_u_long_long_int; \
 479                                                                               \
 480         LABEL (longlong_number):                                              \
 481           if (prec < 0)                                                       \
 482             /* Supply a default precision if none was given.  */              \
 483             prec = 1;                                                         \
 484           else                                                                \
 485             /* We have to take care for the '0' flag.  If a precision         \
 486                is given it must be ignored.  */                               \
 487             pad = ' ';                                                        \
 488                                                                               \
 489           /* If the precision is 0 and the number is 0 nothing has to         \
 490              be written for the number.  */                                   \
 491           if (prec == 0 && number.longlong == 0)                              \
 492             string = workend;                                                 \
 493           else                                                                \
 494             {                                                                 \
 495               /* Put the number in WORK.  */                                  \
 496               string = _itoa (number.longlong, workend + 1, base,             \
 497                               spec == 'X');                                   \
 498               string -= 1;                                                    \
 499               if (group && grouping)                                          \
 500                 string = group_number (string, workend, grouping,             \
 501                                        thousands_sep);                        \
 502             }                                                                 \
 503           /* Simply further test for num != 0.  */                            \
 504           number.word = number.longlong != 0;                                 \
 505         }                                                                     \
 506       else                                                                    \
 507         {                                                                     \
 508           if (fspec == NULL)                                                  \
 509             if (is_long)                                                      \
 510               number.word = va_arg (ap, unsigned long int);                   \
 511             else if (!is_short)                                               \
 512               number.word = va_arg (ap, unsigned int);                        \
 513             else                                                              \
 514               number.word = (unsigned short int) va_arg (ap, unsigned int);   \
 515           else                                                                \
 516             if (is_long)                                                      \
 517               number.word = args_value[fspec->data_arg].pa_u_long_int;        \
 518             else if (!is_short)                                               \
 519               number.word = args_value[fspec->data_arg].pa_u_int;             \
 520             else                                                              \
 521               number.word = (unsigned short int)                              \
 522                 args_value[fspec->data_arg].pa_u_short_int;                   \
 523                                                                               \
 524         LABEL (number):                                                       \
 525           if (prec < 0)                                                       \
 526             /* Supply a default precision if none was given.  */              \
 527             prec = 1;                                                         \
 528           else                                                                \
 529             /* We have to take care for the '0' flag.  If a precision         \
 530                is given it must be ignored.  */                               \
 531             pad = ' ';                                                        \
 532                                                                               \
 533           /* If the precision is 0 and the number is 0 nothing has to         \
 534              be written for the number.  */                                   \
 535           if (prec == 0 && number.word == 0)                                  \
 536             string = workend;                                                 \
 537           else                                                                \
 538             {                                                                 \
 539               /* Put the number in WORK.  */                                  \
 540               string = _itoa_word (number.word, workend + 1, base,            \
 541                                    spec == 'X');                              \
 542               string -= 1;                                                    \
 543               if (group && grouping)                                          \
 544                 string = group_number (string, workend, grouping,             \
 545                                        thousands_sep);                        \
 546             }                                                                 \
 547         }                                                                     \
 548                                                                               \
 549       prec -= workend - string;                                               \
 550                                                                               \
 551       if (prec > 0)                                                           \
 552         /* Add zeros to the precision.  */                                    \
 553         while (prec-- > 0)                                                    \
 554           *string-- = '0';                                                    \
 555       else if (number.word != 0 && alt && base == 8)                          \
 556         /* Add octal marker.  */                                              \
 557         *string-- = '0';                                                      \
 558                                                                               \
 559       if (!left)                                                              \
 560         {                                                                     \
 561           width -= workend - string;                                          \
 562                                                                               \
 563           if (number.word != 0 && alt && base == 16)                          \
 564             /* Account for 0X hex marker.  */                                 \
 565             width -= 2;                                                       \
 566                                                                               \
 567           if (is_negative || showsign || space)                               \
 568             --width;                                                          \
 569                                                                               \
 570           if (pad == '0')                                                     \
 571             {                                                                 \
 572               while (width-- > 0)                                             \
 573                 *string-- = '0';                                              \
 574                                                                               \
 575               if (number.word != 0 && alt && base == 16)                      \
 576                 {                                                             \
 577                   *string-- = spec;                                           \
 578                   *string-- = '0';                                            \
 579                 }                                                             \
 580                                                                               \
 581               if (is_negative)                                                \
 582                 *string-- = '-';                                              \
 583               else if (showsign)                                              \
 584                 *string-- = '+';                                              \
 585               else if (space)                                                 \
 586                 *string-- = ' ';                                              \
 587             }                                                                 \
 588           else                                                                \
 589             {                                                                 \
 590               if (number.word != 0 && alt && base == 16)                      \
 591                 {                                                             \
 592                   *string-- = spec;                                           \
 593                   *string-- = '0';                                            \
 594                 }                                                             \
 595                                                                               \
 596               if (is_negative)                                                \
 597                 *string-- = '-';                                              \
 598               else if (showsign)                                              \
 599                 *string-- = '+';                                              \
 600               else if (space)                                                 \
 601                 *string-- = ' ';                                              \
 602                                                                               \
 603               while (width-- > 0)                                             \
 604                 *string-- = ' ';                                              \
 605             }                                                                 \
 606                                                                               \
 607           outstring (string + 1, workend - string);                           \
 608                                                                               \
 609           break;                                                              \
 610         }                                                                     \
 611       else                                                                    \
 612         {                                                                     \
 613           if (number.word != 0 && alt && base == 16)                          \
 614             {                                                                 \
 615               *string-- = spec;                                               \
 616               *string-- = '0';                                                \
 617             }                                                                 \
 618                                                                               \
 619           if (is_negative)                                                    \
 620             *string-- = '-';                                                  \
 621           else if (showsign)                                                  \
 622             *string-- = '+';                                                  \
 623           else if (space)                                                     \
 624             *string-- = ' ';                                                  \
 625                                                                               \
 626           width -= workend - string;                                          \
 627           outstring (string + 1, workend - string);                           \
 628                                                                               \
 629           PAD (' ');                                                          \
 630           break;                                                              \
 631         }                                                                     \
 632                                                                               \
 633     LABEL (form_float):                                                       \
 634       {                                                                       \
 635         /* Floating-point number.  This is handled by printf_fp.c.  */        \
 636         extern int __printf_fp __P ((FILE *, const struct printf_info *,      \
 637                                      const void **const));                    \
 638         const void *ptr;                                                      \
 639         int function_done;                                                    \
 640                                                                               \
 641         if (fspec == NULL)                                                    \
 642           {                                                                   \
 643             struct printf_info info = { prec: prec,                           \
 644                                         width: width,                         \
 645                                         spec: spec,                           \
 646                                         is_long_double: is_long_double,       \
 647                                         is_short: is_short,                   \
 648                                         is_long: is_long,                     \
 649                                         alt: alt,                             \
 650                                         space: space,                         \
 651                                         left: left,                           \
 652                                         showsign: showsign,                   \
 653                                         group: group,                         \
 654                                         pad: pad,                             \
 655                                         extra: 0 };                           \
 656                                                                               \
 657             if (is_long_double)                                               \
 658               the_arg.pa_long_double = va_arg (ap, long double);              \
 659             else                                                              \
 660               the_arg.pa_double = va_arg (ap, double);                        \
 661             ptr = (const void *) &the_arg;                                    \
 662                                                                               \
 663             function_done = __printf_fp (s, &info, &ptr);                     \
 664           }                                                                   \
 665         else                                                                  \
 666           {                                                                   \
 667             ptr = (const void *) &args_value[fspec->data_arg];                \
 668                                                                               \
 669             function_done = __printf_fp (s, &fspec->info, &ptr);              \
 670           }                                                                   \
 671                                                                               \
 672         if (function_done < 0)                                                \
 673           /* Error in print handler.  */                                      \
 674           return -1;                                                          \
 675                                                                               \
 676         done += function_done;                                                \
 677       }                                                                       \
 678       break;                                                                  \
 679                                                                               \
 680     LABEL (form_character):                                                   \
 681       /* Character.  */                                                       \
 682       --width;  /* Account for the character itself.  */                      \
 683       if (!left)                                                              \
 684         PAD (' ');                                                            \
 685       if (fspec == NULL)                                                      \
 686         outchar ((unsigned char) va_arg (ap, int));     /* Promoted.  */      \
 687       else                                                                    \
 688         outchar ((unsigned char) args_value[fspec->data_arg].pa_char);        \
 689       if (left)                                                               \
 690         PAD (' ');                                                            \
 691       break;                                                                  \
 692                                                                               \
 693     LABEL (form_string):                                                      \
 694       {                                                                       \
 695         size_t len;                                                           \
 696                                                                               \
 697         /* The string argument could in fact be `char *' or `wchar_t *'.      \
 698            But this should not make a difference here.  */                    \
 699         if (fspec == NULL)                                                    \
 700           string = (char *) va_arg (ap, const char *);                        \
 701         else                                                                  \
 702           string = (char *) args_value[fspec->data_arg].pa_string;            \
 703                                                                               \
 704         /* Entry point for printing other strings.  */                        \
 705       LABEL (print_string):                                                   \
 706                                                                               \
 707         if (string == NULL)                                                   \
 708           {                                                                   \
 709             /* Write "(null)" if there's space.  */                           \
 710             if (prec == -1 || prec >= (int) sizeof (null) - 1)                \
 711               {                                                               \
 712                 string = (char *) null;                                       \
 713                 len = sizeof (null) - 1;                                      \
 714               }                                                               \
 715             else                                                              \
 716               {                                                               \
 717                 string = (char *) "";                                         \
 718                 len = 0;                                                      \
 719               }                                                               \
 720           }                                                                   \
 721         else if (!is_long)                                                    \
 722           {                                                                   \
 723             if (prec != -1)                                                   \
 724               {                                                               \
 725                 /* Search for the end of the string, but don't search past    \
 726                    the length specified by the precision.  */                 \
 727                 const char *end = memchr (string, '\0', prec);                \
 728                 if (end)                                                      \
 729                   len = end - string;                                         \
 730                 else                                                          \
 731                   len = prec;                                                 \
 732               }                                                               \
 733             else                                                              \
 734               len = strlen (string);                                          \
 735           }                                                                   \
 736         else                                                                  \
 737           {                                                                   \
 738             const wchar_t *s2 = (const wchar_t *) string;                     \
 739             mbstate_t mbstate = 0;                                            \
 740                                                                               \
 741             len = wcsrtombs (NULL, &s2, prec != -1 ? prec : UINT_MAX,         \
 742                              &mbstate);                                       \
 743             if (len == (size_t) -1)                                           \
 744               /* Illegal wide-character string.  */                           \
 745               return -1;                                                      \
 746                                                                               \
 747             s2 = (const wchar_t *) string;                                    \
 748             mbstate = 0;                                                      \
 749             string = alloca (len + 1);                                        \
 750             (void) wcsrtombs (string, &s2, prec != -1 ? prec : UINT_MAX,      \
 751                               &mbstate);                                      \
 752           }                                                                   \
 753                                                                               \
 754         if ((width -= len) < 0)                                               \
 755           {                                                                   \
 756             outstring (string, len);                                          \
 757             break;                                                            \
 758           }                                                                   \
 759                                                                               \
 760         if (!left)                                                            \
 761           PAD (' ');                                                          \
 762         outstring (string, len);                                              \
 763         if (left)                                                             \
 764           PAD (' ');                                                          \
 765       }                                                                       \
 766       break;                                                                  \
 767                                                                               \
 768     LABEL (form_pointer):                                                     \
 769       /* Generic pointer.  */                                                 \
 770       {                                                                       \
 771         const void *ptr;                                                      \
 772         if (fspec == NULL)                                                    \
 773           ptr = va_arg (ap, void *);                                          \
 774         else                                                                  \
 775           ptr = args_value[fspec->data_arg].pa_pointer;                       \
 776         if (ptr != NULL)                                                      \
 777           {                                                                   \
 778             /* If the pointer is not NULL, write it as a %#x spec.  */        \
 779             base = 16;                                                        \
 780             number.word = (unsigned long int) ptr;                            \
 781             is_negative = 0;                                                  \
 782             alt = 1;                                                          \
 783             group = 0;                                                        \
 784             spec = 'x';                                                       \
 785             goto LABEL (number);                                              \
 786           }                                                                   \
 787         else                                                                  \
 788           {                                                                   \
 789             /* Write "(nil)" for a nil pointer.  */                           \
 790             string = (char *) "(nil)";                                        \
 791             /* Make sure the full string "(nil)" is printed.  */              \
 792             if (prec < 5)                                                     \
 793               prec = 5;                                                       \
 794             is_long = 0;        /* This is no wide-char string.  */           \
 795             goto LABEL (print_string);                                        \
 796           }                                                                   \
 797       }                                                                       \
 798       /* NOTREACHED */                                                        \
 799                                                                               \
 800     LABEL (form_number):                                                      \
 801       /* Answer the count of characters written.  */                          \
 802       if (fspec == NULL)                                                      \
 803         if (is_longlong)                                                      \
 804           *(long long int *) va_arg (ap, void *) = done;                      \
 805         else if (is_long)                                                     \
 806           *(long int *) va_arg (ap, void *) = done;                           \
 807         else if (!is_short)                                                   \
 808           *(int *) va_arg (ap, void *) = done;                                \
 809         else                                                                  \
 810           *(short int *) va_arg (ap, void *) = done;                          \
 811       else                                                                    \
 812         if (is_longlong)                                                      \
 813           *(long long int *) args_value[fspec->data_arg].pa_pointer = done;   \
 814         else if (is_long)                                                     \
 815           *(long int *) args_value[fspec->data_arg].pa_pointer = done;        \
 816         else if (!is_short)                                                   \
 817           *(int *) args_value[fspec->data_arg].pa_pointer = done;             \
 818         else                                                                  \
 819           *(short int *) args_value[fspec->data_arg].pa_pointer = done;       \
 820       break;                                                                  \
 821                                                                               \
 822     LABEL (form_strerror):                                                    \
 823       /* Print description of error ERRNO.  */                                \
 824       {                                                                       \
 825         extern char *_strerror_internal __P ((int, char *buf, size_t));       \
 826                                                                               \
 827         string = (char *)                                                     \
 828           _strerror_internal (errno, work_buffer, sizeof work_buffer);        \
 829       }                                                                       \
 830       is_long = 0;              /* This is no wide-char string.  */           \
 831       goto LABEL (print_string)
 832
 833
 834   /* Sanity check of arguments.  */
 835   ARGCHECK (s, format);
 836
 837   if (UNBUFFERED_P (s))
 838     /* Use a helper function which will allocate a local temporary buffer
 839        for the stream and then call us again.  */
 840     return buffered_vfprintf (s, format, ap);
 841
 842   /* Initialize local variables.  */
 843   done = 0;
 844   grouping = (const char *) -1;
 845   mbstate = 0;
 846   ap_save = ap;
 847   nspecs_done = 0;
 848
 849   /* Find the first format specifier.  */
 850   f = lead_str_end = find_spec (format, &mbstate);
 851
 852   /* Lock stream.  */
 853   flockfile (s);
 854
 855   /* Write the literal text before the first format.  */
 856   outstring ((const UCHAR_T *) format,
 857              lead_str_end - (const UCHAR_T *) format);
 858
 859   /* If we only have to print a simple string, return now.  */
 860   if (*f == L_('\0'))
 861     {
 862       funlockfile (s);
 863       return done;
 864     }
 865
 866   /* Process whole format string.  */
 867   do
 868     {
 869 #define REF(Name) &&do_##Name
 870 #define LABEL(Name) do_##Name
 871       STEP0_3_TABLE;
 872       STEP4_TABLE;
 873
 874       union printf_arg *args_value;     /* This is not used here but ... */
 875       int is_negative;  /* Flag for negative number.  */
 876       union
 877       {
 878         unsigned long long int longlong;
 879         unsigned long int word;
 880       } number;
 881       int base;
 882       union printf_arg the_arg;
 883       char *string;     /* Pointer to argument string.  */
 884       int alt = 0;      /* Alternate format.  */
 885       int space = 0;    /* Use space prefix if no sign is needed.  */
 886       int left = 0;     /* Left-justify output.  */
 887       int showsign = 0; /* Always begin with plus or minus sign.  */
 888       int group = 0;    /* Print numbers according grouping rules.  */
 889       int is_long_double = 0; /* Argument is long double/ long long int.  */
 890       int is_short = 0; /* Argument is long int.  */
 891       int is_long = 0;  /* Argument is short int.  */
 892       int width = 0;    /* Width of output; 0 means none specified.  */
 893       int prec = -1;    /* Precision of output; -1 means none specified.  */
 894       char pad = ' ';   /* Padding character.  */
 895       CHAR_T spec;
 896
 897       /* Get current character in format string.  */
 898       JUMP (*++f, step0_jumps);
 899
 900       /* ' ' flag.  */
 901     LABEL (flag_space):
 902       space = 1;
 903       JUMP (*++f, step0_jumps);
 904
 905       /* '+' flag.  */
 906     LABEL (flag_plus):
 907       showsign = 1;
 908       JUMP (*++f, step0_jumps);
 909
 910       /* The '-' flag.  */
 911     LABEL (flag_minus):
 912       left = 1;
 913       pad = L_(' ');
 914       JUMP (*++f, step0_jumps);
 915
 916       /* The '#' flag.  */
 917     LABEL (flag_hash):
 918       alt = 1;
 919       JUMP (*++f, step0_jumps);
 920
 921       /* The '0' flag.  */
 922     LABEL (flag_zero):
 923       if (!left)
 924         pad = L_('0');
 925       JUMP (*++f, step0_jumps);
 926
 927       /* The '\'' flag.  */
 928     LABEL (flag_quote):
 929       group = 1;
 930
 931       /* XXX Completely wrong.  Use wctob.  */
 932       if (grouping == (const char *) -1)
 933         {
 934           /* Figure out the thousands separator character.  */
 935           if (mbtowc (&thousands_sep,
 936                       _NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP),
 937                       strlen (_NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP))) <= 0)
 938             thousands_sep = (wchar_t)
 939               *_NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP);
 940           grouping = _NL_CURRENT (LC_NUMERIC, GROUPING);
 941           if (*grouping == '\0' || *grouping == CHAR_MAX
 942               || thousands_sep == L'\0')
 943             grouping = NULL;
 944         }
 945       JUMP (*++f, step0_jumps);
 946
 947       /* Get width from argument.  */
 948     LABEL (width_asterics):
 949       {
 950         const UCHAR_T *tmp;     /* Temporary value.  */
 951
 952         tmp = ++f;
 953         if (ISDIGIT (*tmp) && read_int (&tmp) && *tmp == L_('$'))
 954           /* The width comes from a positional parameter.  */
 955           goto do_positional;
 956
 957         width = va_arg (ap, int);
 958
 959         /* Negative width means left justified.  */
 960         if (width < 0)
 961           {
 962             width = -width;
 963             pad = L_(' ');
 964             left = 1;
 965           }
 966       }
 967       JUMP (*f, step1_jumps);
 968
 969       /* Given width in format string.  */
 970     LABEL (width):
 971       width = read_int (&f);
 972       if (*f == L_('$'))
 973         /* Oh, oh.  The argument comes from a positional parameter.  */
 974         goto do_positional;
 975       JUMP (*f, step1_jumps);
 976
 977     LABEL (precision):
 978       ++f;
 979       if (*f == L_('*'))
 980         {
 981           const UCHAR_T *tmp;   /* Temporary value.  */
 982
 983           tmp = ++f;
 984           if (ISDIGIT (*tmp) && read_int (&tmp) > 0 && *tmp == L_('$'))
 985             /* The precision comes from a positional parameter.  */
 986             goto do_positional;
 987
 988           prec = va_arg (ap, int);
 989
 990           /* If the precision is negative the precision is omitted.  */
 991           if (prec < 0)
 992             prec = -1;
 993         }
 994       else if (ISDIGIT (*f))
 995         prec = read_int (&f);
 996       else
 997         prec = 0;
 998       JUMP (*f, step2_jumps);
 999
1000       /* Process 'h' modifier.  No other modifier is allowed to
1001          follow.  */
1002     LABEL (mod_half):
1003       is_short = 1;
1004       JUMP (*++f, step4_jumps);
1005
1006       /* Process 'l' modifier.  There might another 'l' follow.  */
1007     LABEL (mod_long):
1008       is_long = 1;
1009       JUMP (*++f, step3_jumps);
1010
1011       /* Process 'L', 'q', or 'll' modifier.  No other modifier is
1012          allowed to follow.  */
1013     LABEL (mod_longlong):
1014       is_long_double = 1;
1015       JUMP (*++f, step4_jumps);
1016
1017     LABEL (mod_size_t):
1018       is_longlong = sizeof (size_t) > sizeof (unsigned long int);
1019       is_long = sizeof (size_t) > sizeof (unsigned int);
1020       JUMP (*++f, step4_jumps);
1021
1022
1023       /* Process current format.  */
1024       while (1)
1025         {
1026           process_arg (((struct printf_spec *) NULL));
1027
1028         LABEL (form_unknown):
1029           if (spec == L_('\0'))
1030             {
1031               /* The format string ended before the specifier is complete.  */
1032               funlockfile (s);
1033               return -1;
1034             }
1035
1036           /* If we are in the fast loop force entering the complicated
1037              one.  */
1038           goto do_positional;
1039         }
1040
1041       /* Look for next format specifier.  */
1042       f = find_spec ((end_of_spec = ++f), &mbstate);
1043
1044       /* Write the following constant string.  */
1045       outstring (end_of_spec, f - end_of_spec);
1046     }
1047   while (*f != L_('\0'));
1048
1049   /* Unlock stream.  */
1050   funlockfile (s);
1051
1052   /* We processed the whole format without any positional parameters.  */
1053   return done;
1054
1055   /* Here starts the more complex loop to handle positional parameters.  */
1056 do_positional:
1057   {
1058     /* Array with information about the needed arguments.  This has to
1059        be dynamically extendable.  */
1060     size_t nspecs = 0;
1061     size_t nspecs_max = 32;     /* A more or less arbitrary start value.  */
1062     struct printf_spec *specs
1063       = alloca (nspecs_max * sizeof (struct printf_spec));
1064
1065     /* The number of arguments the format string requests.  This will
1066        determine the size of the array needed to store the argument
1067        attributes.  */
1068     size_t nargs = 0;
1069     int *args_type;
1070     union printf_arg *args_value;
1071
1072     /* Positional parameters refer to arguments directly.  This could
1073        also determine the maximum number of arguments.  Track the
1074        maximum number.  */
1075     size_t max_ref_arg = 0;
1076
1077     /* Just a counter.  */
1078     int cnt;
1079
1080
1081     if (grouping == (const char *) -1)
1082       {
1083         /* XXX Use wctob.  But this is incompatible for now.  */
1084         /* Figure out the thousands separator character.  */
1085         if (mbtowc (&thousands_sep,
1086                     _NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP),
1087                     strlen (_NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP))) <= 0)
1088           thousands_sep = (wchar_t) *_NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP);
1089         grouping = _NL_CURRENT (LC_NUMERIC, GROUPING);
1090         if (*grouping == '\0' || *grouping == CHAR_MAX
1091             || thousands_sep == L'\0')
1092           grouping = NULL;
1093       }
1094
1095     for (f = lead_str_end; *f != '\0'; f = specs[nspecs++].next_fmt)
1096       {
1097         if (nspecs >= nspecs_max)
1098           {
1099             /* Extend the array of format specifiers.  */
1100             struct printf_spec *old = specs;
1101
1102             nspecs_max *= 2;
1103             specs = alloca (nspecs_max * sizeof (struct printf_spec));
1104
1105             if (specs == &old[nspecs])
1106               /* Stack grows up, OLD was the last thing allocated;
1107                  extend it.  */
1108               nspecs_max += nspecs_max / 2;
1109             else
1110               {
1111                 /* Copy the old array's elements to the new space.  */
1112                 memcpy (specs, old, nspecs * sizeof (struct printf_spec));
1113                 if (old == &specs[nspecs])
1114                   /* Stack grows down, OLD was just below the new
1115                      SPECS.  We can use that space when the new space
1116                      runs out.  */
1117                   nspecs_max += nspecs_max / 2;
1118               }
1119           }
1120
1121         /* Parse the format specifier.  */
1122         nargs += parse_one_spec (f, nargs, &specs[nspecs], &max_ref_arg, NULL);
1123       }
1124
1125     /* Determine the number of arguments the format string consumes.  */
1126     nargs = MAX (nargs, max_ref_arg);
1127
1128     /* Allocate memory for the argument descriptions.  */
1129     args_type = alloca (nargs * sizeof (int));
1130     memset (args_type, 0, nargs * sizeof (int));
1131     args_value = alloca (nargs * sizeof (union printf_arg));
1132
1133     /* XXX Could do sanity check here: If any element in ARGS_TYPE is
1134        still zero after this loop, format is invalid.  For now we
1135        simply use 0 as the value.  */
1136
1137     /* Fill in the types of all the arguments.  */
1138     for (cnt = 0; cnt < nspecs; ++cnt)
1139       {
1140         /* If the width is determined by an argument this is an int.  */
1141         if (specs[cnt].width_arg != -1)
1142           args_type[specs[cnt].width_arg] = PA_INT;
1143
1144         /* If the precision is determined by an argument this is an int.  */
1145         if (specs[cnt].prec_arg != -1)
1146           args_type[specs[cnt].prec_arg] = PA_INT;
1147
1148         switch (specs[cnt].ndata_args)
1149           {
1150           case 0:               /* No arguments.  */
1151             break;
1152           case 1:               /* One argument; we already have the type.  */
1153             args_type[specs[cnt].data_arg] = specs[cnt].data_arg_type;
1154             break;
1155           default:
1156             /* We have more than one argument for this format spec.
1157                We must call the arginfo function again to determine
1158                all the types.  */
1159             (void) (*__printf_arginfo_table[specs[cnt].info.spec])
1160               (&specs[cnt].info,
1161                specs[cnt].ndata_args, &args_type[specs[cnt].data_arg]);
1162             break;
1163           }
1164       }
1165
1166     /* Now we know all the types and the order.  Fill in the argument
1167        values.  */
1168     for (cnt = 0, ap = ap_save; cnt < nargs; ++cnt)
1169       switch (args_type[cnt])
1170         {
1171 #define T(tag, mem, type)                                                     \
1172         case tag:                                                             \
1173           args_value[cnt].mem = va_arg (ap, type);                            \
1174           break
1175
1176         T (PA_CHAR, pa_char, int); /* Promoted.  */
1177         T (PA_INT|PA_FLAG_SHORT, pa_short_int, int); /* Promoted.  */
1178         T (PA_INT, pa_int, int);
1179         T (PA_INT|PA_FLAG_LONG, pa_long_int, long int);
1180         T (PA_INT|PA_FLAG_LONG_LONG, pa_long_long_int, long long int);
1181         T (PA_FLOAT, pa_float, double); /* Promoted.  */
1182         T (PA_DOUBLE, pa_double, double);
1183         T (PA_DOUBLE|PA_FLAG_LONG_DOUBLE, pa_long_double, long double);
1184         T (PA_STRING, pa_string, const char *);
1185         T (PA_POINTER, pa_pointer, void *);
1186 #undef T
1187         default:
1188           if ((args_type[cnt] & PA_FLAG_PTR) != 0)
1189             args_value[cnt].pa_pointer = va_arg (ap, void *);
1190           else
1191             args_value[cnt].pa_long_double = 0.0;
1192           break;
1193         }
1194
1195     /* Now walk through all format specifiers and process them.  */
1196     for (; nspecs_done < nspecs; ++nspecs_done)
1197       {
1198 #undef REF
1199 #define REF(Name) &&do2_##Name
1200 #undef LABEL
1201 #define LABEL(Name) do2_##Name
1202         STEP4_TABLE;
1203
1204         int is_negative;
1205         union
1206         {
1207           unsigned long long int longlong;
1208           unsigned long int word;
1209         } number;
1210         int base;
1211         union printf_arg the_arg;
1212         char *string;   /* Pointer to argument string.  */
1213
1214         /* Fill variables from values in struct.  */
1215         int alt = specs[nspecs_done].info.alt;
1216         int space = specs[nspecs_done].info.space;
1217         int left = specs[nspecs_done].info.left;
1218         int showsign = specs[nspecs_done].info.showsign;
1219         int group = specs[nspecs_done].info.group;
1220         int is_long_double = specs[nspecs_done].info.is_long_double;
1221         int is_short = specs[nspecs_done].info.is_short;
1222         int is_long = specs[nspecs_done].info.is_long;
1223         int width = specs[nspecs_done].info.width;
1224         int prec = specs[nspecs_done].info.prec;
1225         char pad = specs[nspecs_done].info.pad;
1226         CHAR_T spec = specs[nspecs_done].info.spec;
1227
1228         /* Fill in last information.  */
1229         if (specs[nspecs_done].width_arg != -1)
1230           {
1231             /* Extract the field width from an argument.  */
1232             specs[nspecs_done].info.width =
1233               args_value[specs[nspecs_done].width_arg].pa_int;
1234
1235             if (specs[nspecs_done].info.width < 0)
1236               /* If the width value is negative left justification is
1237                  selected and the value is taken as being positive.  */
1238               {
1239                 specs[nspecs_done].info.width *= -1;
1240                 left = specs[nspecs_done].info.left = 1;
1241               }
1242             width = specs[nspecs_done].info.width;
1243           }
1244
1245         if (specs[nspecs_done].prec_arg != -1)
1246           {
1247             /* Extract the precision from an argument.  */
1248             specs[nspecs_done].info.prec =
1249               args_value[specs[nspecs_done].prec_arg].pa_int;
1250
1251             if (specs[nspecs_done].info.prec < 0)
1252               /* If the precision is negative the precision is
1253                  omitted.  */
1254               specs[nspecs_done].info.prec = -1;
1255
1256             prec = specs[nspecs_done].info.prec;
1257           }
1258
1259         /* Process format specifiers.  */
1260         while (1)
1261           {
1262             JUMP (spec, step4_jumps);
1263
1264             process_arg ((&specs[nspecs_done]));
1265
1266           LABEL (form_unknown):
1267             {
1268               extern printf_function **__printf_function_table;
1269               int function_done;
1270               printf_function *function;
1271               unsigned int i;
1272               const void **ptr;
1273
1274               function =
1275                 (__printf_function_table == NULL ? NULL :
1276                  __printf_function_table[specs[nspecs_done].info.spec]);
1277
1278               if (function == NULL)
1279                 function = &printf_unknown;
1280
1281               ptr = alloca (specs[nspecs_done].ndata_args
1282                             * sizeof (const void *));
1283
1284               /* Fill in an array of pointers to the argument values.  */
1285               for (i = 0; i < specs[nspecs_done].ndata_args; ++i)
1286                 ptr[i] = &args_value[specs[nspecs_done].data_arg + i];
1287
1288               /* Call the function.  */
1289               function_done = (*function) (s, &specs[nspecs_done].info, ptr);
1290
1291               /* If an error occured we don't have information about #
1292                  of chars.  */
1293               if (function_done < 0)
1294                 {
1295                   funlockfile (s);
1296                   return -1;
1297                 }
1298
1299               done += function_done;
1300             }
1301             break;
1302           }
1303
1304         /* Write the following constant string.  */
1305         outstring (specs[nspecs_done].end_of_fmt,
1306                    specs[nspecs_done].next_fmt
1307                    - specs[nspecs_done].end_of_fmt);
1308       }
1309   }
1310
1311   /* Unlock the stream.  */
1312   funlockfile (s);
1313
1314   return done;
1315 }
1316
1317 #ifdef USE_IN_LIBIO
1318 # undef vfprintf
1319 # ifdef strong_alias
1320 /* This is for glibc.  */
1321 strong_alias (_IO_vfprintf, vfprintf);
1322 # else
1323 #  if defined __ELF__ || defined __GNU_LIBRARY__
1324 #   include <gnu-stabs.h>
1325 #   ifdef weak_alias
1326 weak_alias (_IO_vfprintf, vfprintf);
1327 #   endif
1328 #  endif
1329 # endif
1330 #endif
1331 \f
1332 /* Handle an unknown format specifier.  This prints out a canonicalized
1333    representation of the format spec itself.  */
1334 static int
1335 printf_unknown (FILE *s, const struct printf_info *info,
1336                 const void *const *args)
1337
1338 {
1339   int done = 0;
1340   char work_buffer[BUFSIZ];
1341   register char *w;
1342
1343   outchar ('%');
1344
1345   if (info->alt)
1346     outchar ('#');
1347   if (info->group)
1348     outchar ('\'');
1349   if (info->showsign)
1350     outchar ('+');
1351   else if (info->space)
1352     outchar (' ');
1353   if (info->left)
1354     outchar ('-');
1355   if (info->pad == '0')
1356     outchar ('0');
1357
1358   if (info->width != 0)
1359     {
1360       w = _itoa_word (info->width, workend + 1, 10, 0);
1361       while (++w <= workend)
1362         outchar (*w);
1363     }
1364
1365   if (info->prec != -1)
1366     {
1367       outchar ('.');
1368       w = _itoa_word (info->prec, workend + 1, 10, 0);
1369       while (++w <= workend)
1370         outchar (*w);
1371     }
1372
1373   if (info->spec != '\0')
1374     outchar (info->spec);
1375
1376   return done;
1377 }
1378 \f
1379 /* Group the digits according to the grouping rules of the current locale.
1380    The interpretation of GROUPING is as in `struct lconv' from <locale.h>.  */
1381 static char *
1382 group_number (CHAR_T *w, CHAR_T *rear_ptr, const CHAR_T *grouping,
1383               wchar_t thousands_sep)
1384 {
1385   int len;
1386   char *src, *s;
1387
1388   /* We treat all negative values like CHAR_MAX.  */
1389
1390   if (*grouping == CHAR_MAX || *grouping < 0)
1391     /* No grouping should be done.  */
1392     return w;
1393
1394   len = *grouping;
1395
1396   /* Copy existing string so that nothing gets overwritten.  */
1397   src = (char *) alloca (rear_ptr - w);
1398   memcpy (src, w + 1, rear_ptr - w);
1399   s = &src[rear_ptr - w - 1];
1400   w = rear_ptr;
1401
1402   /* Process all characters in the string.  */
1403   while (s >= src)
1404     {
1405       *w-- = *s--;
1406
1407       if (--len == 0 && s >= src)
1408         {
1409           /* A new group begins.  */
1410           *w-- = thousands_sep;
1411
1412           len = *grouping++;
1413           if (*grouping == '\0')
1414             /* The previous grouping repeats ad infinitum.  */
1415             --grouping;
1416           else if (*grouping == CHAR_MAX || *grouping < 0)
1417             {
1418               /* No further grouping to be done.
1419                  Copy the rest of the number.  */
1420               do
1421                 *w-- = *s--;
1422               while (s >= src);
1423               break;
1424             }
1425         }
1426     }
1427   return w;
1428 }
1429 \f
1430 #ifdef USE_IN_LIBIO
1431 /* Helper "class" for `fprintf to unbuffered': creates a temporary buffer.  */
1432 struct helper_file
1433   {
1434     struct _IO_FILE_plus _f;
1435     _IO_FILE *_put_stream;
1436   };
1437
1438 static int
1439 _IO_helper_overflow (_IO_FILE *s, int c)
1440 {
1441   _IO_FILE *target = ((struct helper_file*) s)->_put_stream;
1442   int used = s->_IO_write_ptr - s->_IO_write_base;
1443   if (used)
1444     {
1445       _IO_size_t written = _IO_sputn (target, s->_IO_write_base, used);
1446       s->_IO_write_ptr -= written;
1447     }
1448   return PUTC (c, s);
1449 }
1450
1451 static const struct _IO_jump_t _IO_helper_jumps =
1452 {
1453   JUMP_INIT_DUMMY,
1454   JUMP_INIT (finish, _IO_default_finish),
1455   JUMP_INIT (overflow, _IO_helper_overflow),
1456   JUMP_INIT (underflow, _IO_default_underflow),
1457   JUMP_INIT (uflow, _IO_default_uflow),
1458   JUMP_INIT (pbackfail, _IO_default_pbackfail),
1459   JUMP_INIT (xsputn, _IO_default_xsputn),
1460   JUMP_INIT (xsgetn, _IO_default_xsgetn),
1461   JUMP_INIT (seekoff, _IO_default_seekoff),
1462   JUMP_INIT (seekpos, _IO_default_seekpos),
1463   JUMP_INIT (setbuf, _IO_default_setbuf),
1464   JUMP_INIT (sync, _IO_default_sync),
1465   JUMP_INIT (doallocate, _IO_default_doallocate),
1466   JUMP_INIT (read, _IO_default_read),
1467   JUMP_INIT (write, _IO_default_write),
1468   JUMP_INIT (seek, _IO_default_seek),
1469   JUMP_INIT (close, _IO_default_close),
1470   JUMP_INIT (stat, _IO_default_stat)
1471 };
1472
1473 static int
1474 buffered_vfprintf (register _IO_FILE *s, const CHAR_T *format,
1475                    _IO_va_list args)
1476 {
1477   char buf[_IO_BUFSIZ];
1478   struct helper_file helper;
1479   register _IO_FILE *hp = (_IO_FILE *) &helper;
1480   int result, to_flush;
1481
1482   /* Initialize helper.  */
1483   helper._put_stream = s;
1484   hp->_IO_write_base = buf;
1485   hp->_IO_write_ptr = buf;
1486   hp->_IO_write_end = buf + sizeof buf;
1487   hp->_IO_file_flags = _IO_MAGIC|_IO_NO_READS;
1488   _IO_JUMPS (hp) = (struct _IO_jump_t *) &_IO_helper_jumps;
1489
1490   /* Now print to helper instead.  */
1491   result = _IO_vfprintf (hp, format, args);
1492
1493   /* Now flush anything from the helper to the S. */
1494   if ((to_flush = hp->_IO_write_ptr - hp->_IO_write_base) > 0)
1495     {
1496       if (_IO_sputn (s, hp->_IO_write_base, to_flush) != to_flush)
1497         return -1;
1498     }
1499
1500   return result;
1501 }
1502
1503 #else /* !USE_IN_LIBIO */
1504
1505 static int
1506 buffered_vfprintf (register FILE *s, const CHAR_T *format, va_list args)
1507 {
1508   char buf[BUFSIZ];
1509   int result;
1510
1511   s->__bufp = s->__buffer = buf;
1512   s->__bufsize = sizeof buf;
1513   s->__put_limit = s->__buffer + s->__bufsize;
1514   s->__get_limit = s->__buffer;
1515
1516   /* Now use buffer to print.  */
1517   result = vfprintf (s, format, args);
1518
1519   if (fflush (s) == EOF)
1520     result = -1;
1521   s->__buffer = s->__bufp = s->__get_limit = s->__put_limit = NULL;
1522   s->__bufsize = 0;
1523
1524   return result;
1525 }
1526 \f
1527 /* Pads string with given number of a specified character.
1528    This code is taken from iopadn.c of the GNU I/O library.  */
1529 #define PADSIZE 16
1530 static const CHAR_T blanks[PADSIZE] =
1531 { L_(' '), L_(' '), L_(' '), L_(' '), L_(' '), L_(' '), L_(' '), L_(' '),
1532   L_(' '), L_(' '), L_(' '), L_(' '), L_(' '), L_(' '), L_(' '), L_(' ') };
1533 static const CHAR_T zeroes[PADSIZE] =
1534 { L_('0'), L_('0'), L_('0'), L_('0'), L_('0'), L_('0'), L_('0'), L_('0'),
1535   L_('0'), L_('0'), L_('0'), L_('0'), L_('0'), L_('0'), L_('0'), L_('0') };
1536
1537 ssize_t
1538 #ifndef COMPILE_WPRINTF
1539 __printf_pad (FILE *s, char pad, size_t count)
1540 #else
1541 __wprintf_pad (FILE *s, wchar_t pad, size_t count)
1542 #endif
1543 {
1544   const CHAR_T *padptr;
1545   register size_t i;
1546
1547   padptr = pad == L_(' ') ? blanks : zeroes;
1548
1549   for (i = count; i >= PADSIZE; i -= PADSIZE)
1550     if (PUT (s, padptr, PADSIZE) != PADSIZE)
1551       return -1;
1552   if (i > 0)
1553     if (PUT (s, padptr, i) != i)
1554       return -1;
1555
1556   return count;
1557 }
1558 #undef PADSIZE
1559 #endif /* USE_IN_LIBIO */