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 not,
  16    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 <libc-lock.h>
  27 #include "_itoa.h"
  28 #include "../locale/localeinfo.h"
  29
  30 /* This code is shared between the standard stdio implementation found
  31    in GNU C library and the libio implementation originally found in
  32    GNU libg++.
  33
  34    Beside this it is also shared between the normal and wide character
  35    implementation as defined in ISO/IEC 9899:1990/Amendment 1:1995.  */
  36
  37 #ifndef COMPILE_WPRINTF
  38 # define CHAR_T         char
  39 # define UCHAR_T        unsigned char
  40 # define INT_T          int
  41 # define L_(Str)        Str
  42 # define ISDIGIT(Ch)    isdigit (Ch)
  43
  44 # ifdef USE_IN_LIBIO
  45 #  define PUT(F, S, N)  _IO_sputn ((F), (S), (N))
  46 #  define PAD(Padchar)                                                        \
  47   if (width > 0)                                                              \
  48     done += _IO_padn (s, (Padchar), width)
  49 # else
  50 #  define PUTC(C, F)    putc (C, F)
  51 ssize_t __printf_pad __P ((FILE *, char pad, size_t n));
  52 # define PAD(Padchar)                                                         \
  53   if (width > 0)                                                              \
  54     { ssize_t __res = __printf_pad (s, (Padchar), width);                     \
  55       if (__res == -1) return -1;                                             \
  56       done += __res; }
  57 # endif
  58 #else
  59 # define vfprintf       vfwprintf
  60 # define CHAR_T         wchar_t
  61 # define UCHAR_T        uwchar_t
  62 # define INT_T          wint_t
  63 # define L_(Str)        L##Str
  64 # define ISDIGIT(Ch)    iswdigit (Ch)
  65
  66 # ifdef USE_IN_LIBIO
  67 #  define PUT(F, S, N)  _IO_sputn ((F), (S), (N))
  68 #  define PAD(Padchar)                                                        \
  69   if (width > 0)                                                              \
  70     done += _IO_wpadn (s, (Padchar), width)
  71 # else
  72 #  define PUTC(C, F)    wputc (C, F)
  73 ssize_t __wprintf_pad __P ((FILE *, wchar_t pad, size_t n));
  74 #  define PAD(Padchar)                                                        \
  75   if (width > 0)                                                              \
  76     { ssize_t __res = __wprintf_pad (s, (Padchar), width);                    \
  77       if (__res == -1) return -1;                                             \
  78       done += __res; }
  79 # endif
  80 #endif
  81
  82 /* Include the shared code for parsing the format string.  */
  83 #include "printf-parse.h"
  84
  85
  86 #ifdef USE_IN_LIBIO
  87 /* This code is for use in libio.  */
  88 # include <libioP.h>
  89 # define PUTC(C, F)     _IO_putc_unlocked (C, F)
  90 # define vfprintf       _IO_vfprintf
  91 # define FILE           _IO_FILE
  92 # undef va_list
  93 # define va_list        _IO_va_list
  94 # undef BUFSIZ
  95 # define BUFSIZ         _IO_BUFSIZ
  96 # define ARGCHECK(S, Format)                                                  \
  97   do                                                                          \
  98     {                                                                         \
  99       /* Check file argument for consistence.  */                             \
 100       CHECK_FILE (S, -1);                                                     \
 101       if (S->_flags & _IO_NO_WRITES || Format == NULL)                        \
 102         {                                                                     \
 103           MAYBE_SET_EINVAL;                                                   \
 104           return -1;                                                          \
 105         }                                                                     \
 106     } while (0)
 107 # define UNBUFFERED_P(S) ((S)->_IO_file_flags & _IO_UNBUFFERED)
 108 #else /* ! USE_IN_LIBIO */
 109 /* This code is for use in the GNU C library.  */
 110 # include <stdio.h>
 111 # define PUT(F, S, N)   fwrite (S, 1, N, F)
 112 # define ARGCHECK(S, Format)                                                  \
 113   do                                                                          \
 114     {                                                                         \
 115       /* Check file argument for consistence.  */                             \
 116       if (!__validfp(S) || !S->__mode.__write || Format == NULL)              \
 117         {                                                                     \
 118           __set_errno (EINVAL);                                               \
 119           return -1;                                                          \
 120         }                                                                     \
 121       if (!S->__seen)                                                         \
 122         {                                                                     \
 123           if (__flshfp (S, EOF) == EOF)                                       \
 124             return -1;                                                        \
 125         }                                                                     \
 126     }                                                                         \
 127    while (0)
 128 # define UNBUFFERED_P(s) ((s)->__buffer == NULL)
 129
 130 /* XXX These declarations should go as soon as the stdio header files
 131    have these prototypes.   */
 132 extern void __flockfile (FILE *);
 133 extern void __funlockfile (FILE *);
 134 #endif /* USE_IN_LIBIO */
 135
 136
 137 #define outchar(Ch)                                                           \
 138   do                                                                          \
 139     {                                                                         \
 140       register const int outc = (Ch);                                         \
 141       if (PUTC (outc, s) == EOF)                                              \
 142         return -1;                                                            \
 143       else                                                                    \
 144         ++done;                                                               \
 145     }                                                                         \
 146   while (0)
 147
 148 #define outstring(String, Len)                                                \
 149   do                                                                          \
 150     {                                                                         \
 151       if ((size_t) PUT (s, (String), (Len)) != (size_t) (Len))                \
 152         return -1;                                                            \
 153       done += (Len);                                                          \
 154     }                                                                         \
 155   while (0)
 156
 157 /* For handling long_double and longlong we use the same flag.  */
 158 #ifndef is_longlong
 159 # define is_longlong is_long_double
 160 #endif
 161
 162
 163 /* Global variables.  */
 164 static const char null[] = "(null)";
 165
 166
 167 /* Helper function to provide temporary buffering for unbuffered streams.  */
 168 static int buffered_vfprintf __P ((FILE *stream, const CHAR_T *fmt, va_list));
 169
 170 /* Handle unknown format specifier.  */
 171 static int printf_unknown __P ((FILE *, const struct printf_info *,
 172                                 const void *const *));
 173
 174 /* Group digits of number string.  */
 175 static char *group_number __P ((CHAR_T *, CHAR_T *, const CHAR_T *, wchar_t));
 176
 177
 178 /* The function itself.  */
 179 int
 180 vfprintf (FILE *s, const CHAR_T *format, va_list ap)
 181 {
 182   /* The character used as thousands separator.  */
 183   wchar_t thousands_sep;
 184
 185   /* The string describing the size of groups of digits.  */
 186   const char *grouping;
 187
 188   /* Place to accumulate the result.  */
 189   int done;
 190
 191   /* Current character in format string.  */
 192   const UCHAR_T *f;
 193
 194   /* End of leading constant string.  */
 195   const UCHAR_T *lead_str_end;
 196
 197   /* Points to next format specifier.  */
 198   const UCHAR_T *end_of_spec;
 199
 200   /* Buffer intermediate results.  */
 201   char work_buffer[1000];
 202 #define workend (&work_buffer[sizeof (work_buffer) - 1])
 203
 204   /* State for restartable multibyte character handling functions.  */
 205   mbstate_t mbstate;
 206
 207   /* We have to save the original argument pointer.  */
 208   va_list ap_save;
 209
 210   /* Count number of specifiers we already processed.  */
 211   int nspecs_done;
 212
 213
 214   /* This table maps a character into a number representing a
 215      class.  In each step there is a destination label for each
 216      class.  */
 217   static const int jump_table[] =
 218   {
 219     /* ' ' */  1,            0,            0, /* '#' */  4,
 220                0, /* '%' */ 14,            0, /* '\''*/  6,
 221                0,            0, /* '*' */  7, /* '+' */  2,
 222                0, /* '-' */  3, /* '.' */  9,            0,
 223     /* '0' */  5, /* '1' */  8, /* '2' */  8, /* '3' */  8,
 224     /* '4' */  8, /* '5' */  8, /* '6' */  8, /* '7' */  8,
 225     /* '8' */  8, /* '9' */  8,            0,            0,
 226                0,            0,            0,            0,
 227                0,            0,            0, /* 'C' */ 25,
 228                0, /* 'E' */ 19,            0, /* 'G' */ 19,
 229                0,            0,            0,            0,
 230     /* 'L' */ 12,            0,            0,            0,
 231                0,            0,            0, /* 'S' */ 21,
 232                0,            0,            0,            0,
 233     /* 'X' */ 18,            0, /* 'Z' */ 13,            0,
 234                0,            0,            0,            0,
 235                0,            0,            0, /* 'c' */ 20,
 236     /* 'd' */ 15, /* 'e' */ 19, /* 'f' */ 19, /* 'g' */ 19,
 237     /* 'h' */ 10, /* 'i' */ 15,            0,            0,
 238     /* 'l' */ 11, /* 'm' */ 24, /* 'n' */ 23, /* 'o' */ 17,
 239     /* 'p' */ 22, /* 'q' */ 12,            0, /* 's' */ 21,
 240                0, /* 'u' */ 16,            0,            0,
 241     /* 'x' */ 18
 242   };
 243
 244 #define NOT_IN_JUMP_RANGE(Ch) ((Ch) < ' ' || (Ch) > 'x')
 245 #define CHAR_CLASS(Ch) (jump_table[(int) (Ch) - ' '])
 246 #define JUMP(ChExpr, table)                                                   \
 247       do                                                                      \
 248         {                                                                     \
 249           const void *ptr;                                                    \
 250           spec = (ChExpr);                                                    \
 251           ptr = NOT_IN_JUMP_RANGE (spec) ? REF (form_unknown)                 \
 252             : table[CHAR_CLASS (spec)];                                       \
 253           goto *ptr;                                                          \
 254         }                                                                     \
 255       while (0)
 256
 257 #define STEP0_3_TABLE                                                         \
 258     /* Step 0: at the beginning.  */                                          \
 259     static const void *step0_jumps[26] =                                      \
 260     {                                                                         \
 261       REF (form_unknown),                                                     \
 262       REF (flag_space),         /* for ' ' */                                 \
 263       REF (flag_plus),          /* for '+' */                                 \
 264       REF (flag_minus),         /* for '-' */                                 \
 265       REF (flag_hash),          /* for '<hash>' */                            \
 266       REF (flag_zero),          /* for '0' */                                 \
 267       REF (flag_quote),         /* for '\'' */                                \
 268       REF (width_asterics),     /* for '*' */                                 \
 269       REF (width),              /* for '1'...'9' */                           \
 270       REF (precision),          /* for '.' */                                 \
 271       REF (mod_half),           /* for 'h' */                                 \
 272       REF (mod_long),           /* for 'l' */                                 \
 273       REF (mod_longlong),       /* for 'L', 'q' */                            \
 274       REF (mod_size_t),         /* for 'Z' */                                 \
 275       REF (form_percent),       /* for '%' */                                 \
 276       REF (form_integer),       /* for 'd', 'i' */                            \
 277       REF (form_unsigned),      /* for 'u' */                                 \
 278       REF (form_octal),         /* for 'o' */                                 \
 279       REF (form_hexa),          /* for 'X', 'x' */                            \
 280       REF (form_float),         /* for 'E', 'e', 'f', 'G', 'g' */             \
 281       REF (form_character),     /* for 'c' */                                 \
 282       REF (form_string),        /* for 's', 'S' */                            \
 283       REF (form_pointer),       /* for 'p' */                                 \
 284       REF (form_number),        /* for 'n' */                                 \
 285       REF (form_strerror),      /* for 'm' */                                 \
 286       REF (form_wcharacter)     /* for 'C' */                                 \
 287     };                                                                        \
 288     /* Step 1: after processing width.  */                                    \
 289     static const void *step1_jumps[26] =                                      \
 290     {                                                                         \
 291       REF (form_unknown),                                                     \
 292       REF (form_unknown),       /* for ' ' */                                 \
 293       REF (form_unknown),       /* for '+' */                                 \
 294       REF (form_unknown),       /* for '-' */                                 \
 295       REF (form_unknown),       /* for '<hash>' */                            \
 296       REF (form_unknown),       /* for '0' */                                 \
 297       REF (form_unknown),       /* for '\'' */                                \
 298       REF (form_unknown),       /* for '*' */                                 \
 299       REF (form_unknown),       /* for '1'...'9' */                           \
 300       REF (precision),          /* for '.' */                                 \
 301       REF (mod_half),           /* for 'h' */                                 \
 302       REF (mod_long),           /* for 'l' */                                 \
 303       REF (mod_longlong),       /* for 'L', 'q' */                            \
 304       REF (mod_size_t),         /* for 'Z' */                                 \
 305       REF (form_percent),       /* for '%' */                                 \
 306       REF (form_integer),       /* for 'd', 'i' */                            \
 307       REF (form_unsigned),      /* for 'u' */                                 \
 308       REF (form_octal),         /* for 'o' */                                 \
 309       REF (form_hexa),          /* for 'X', 'x' */                            \
 310       REF (form_float),         /* for 'E', 'e', 'f', 'G', 'g' */             \
 311       REF (form_character),     /* for 'c' */                                 \
 312       REF (form_string),        /* for 's', 'S' */                            \
 313       REF (form_pointer),       /* for 'p' */                                 \
 314       REF (form_number),        /* for 'n' */                                 \
 315       REF (form_strerror),      /* for 'm' */                                 \
 316       REF (form_wcharacter)     /* for 'C' */                                 \
 317     };                                                                        \
 318     /* Step 2: after processing precision.  */                                \
 319     static const void *step2_jumps[26] =                                      \
 320     {                                                                         \
 321       REF (form_unknown),                                                     \
 322       REF (form_unknown),       /* for ' ' */                                 \
 323       REF (form_unknown),       /* for '+' */                                 \
 324       REF (form_unknown),       /* for '-' */                                 \
 325       REF (form_unknown),       /* for '<hash>' */                            \
 326       REF (form_unknown),       /* for '0' */                                 \
 327       REF (form_unknown),       /* for '\'' */                                \
 328       REF (form_unknown),       /* for '*' */                                 \
 329       REF (form_unknown),       /* for '1'...'9' */                           \
 330       REF (form_unknown),       /* for '.' */                                 \
 331       REF (mod_half),           /* for 'h' */                                 \
 332       REF (mod_long),           /* for 'l' */                                 \
 333       REF (mod_longlong),       /* for 'L', 'q' */                            \
 334       REF (mod_size_t),         /* for 'Z' */                                 \
 335       REF (form_percent),       /* for '%' */                                 \
 336       REF (form_integer),       /* for 'd', 'i' */                            \
 337       REF (form_unsigned),      /* for 'u' */                                 \
 338       REF (form_octal),         /* for 'o' */                                 \
 339       REF (form_hexa),          /* for 'X', 'x' */                            \
 340       REF (form_float),         /* for 'E', 'e', 'f', 'G', 'g' */             \
 341       REF (form_character),     /* for 'c' */                                 \
 342       REF (form_string),        /* for 's', 'S' */                            \
 343       REF (form_pointer),       /* for 'p' */                                 \
 344       REF (form_number),        /* for 'n' */                                 \
 345       REF (form_strerror),      /* for 'm' */                                 \
 346       REF (form_wcharacter)     /* for 'C' */                                 \
 347     };                                                                        \
 348     /* Step 3: after processing first 'l' modifier.  */                       \
 349     static const void *step3_jumps[26] =                                      \
 350     {                                                                         \
 351       REF (form_unknown),                                                     \
 352       REF (form_unknown),       /* for ' ' */                                 \
 353       REF (form_unknown),       /* for '+' */                                 \
 354       REF (form_unknown),       /* for '-' */                                 \
 355       REF (form_unknown),       /* for '<hash>' */                            \
 356       REF (form_unknown),       /* for '0' */                                 \
 357       REF (form_unknown),       /* for '\'' */                                \
 358       REF (form_unknown),       /* for '*' */                                 \
 359       REF (form_unknown),       /* for '1'...'9' */                           \
 360       REF (form_unknown),       /* for '.' */                                 \
 361       REF (form_unknown),       /* for 'h' */                                 \
 362       REF (mod_longlong),       /* for 'l' */                                 \
 363       REF (form_unknown),       /* for 'L', 'q' */                            \
 364       REF (form_unknown),       /* for 'Z' */                                 \
 365       REF (form_percent),       /* for '%' */                                 \
 366       REF (form_integer),       /* for 'd', 'i' */                            \
 367       REF (form_unsigned),      /* for 'u' */                                 \
 368       REF (form_octal),         /* for 'o' */                                 \
 369       REF (form_hexa),          /* for 'X', 'x' */                            \
 370       REF (form_float),         /* for 'E', 'e', 'f', 'G', 'g' */             \
 371       REF (form_character),     /* for 'c' */                                 \
 372       REF (form_string),        /* for 's', 'S' */                            \
 373       REF (form_pointer),       /* for 'p' */                                 \
 374       REF (form_number),        /* for 'n' */                                 \
 375       REF (form_strerror),      /* for 'm' */                                 \
 376       REF (form_wcharacter)     /* for 'C' */                                 \
 377     }
 378
 379 #define STEP4_TABLE                                                           \
 380     /* Step 4: processing format specifier.  */                               \
 381     static const void *step4_jumps[26] =                                      \
 382     {                                                                         \
 383       REF (form_unknown),                                                     \
 384       REF (form_unknown),       /* for ' ' */                                 \
 385       REF (form_unknown),       /* for '+' */                                 \
 386       REF (form_unknown),       /* for '-' */                                 \
 387       REF (form_unknown),       /* for '<hash>' */                            \
 388       REF (form_unknown),       /* for '0' */                                 \
 389       REF (form_unknown),       /* for '\'' */                                \
 390       REF (form_unknown),       /* for '*' */                                 \
 391       REF (form_unknown),       /* for '1'...'9' */                           \
 392       REF (form_unknown),       /* for '.' */                                 \
 393       REF (form_unknown),       /* for 'h' */                                 \
 394       REF (form_unknown),       /* for 'l' */                                 \
 395       REF (form_unknown),       /* for 'L', 'q' */                            \
 396       REF (form_unknown),       /* for 'Z' */                                 \
 397       REF (form_percent),       /* for '%' */                                 \
 398       REF (form_integer),       /* for 'd', 'i' */                            \
 399       REF (form_unsigned),      /* for 'u' */                                 \
 400       REF (form_octal),         /* for 'o' */                                 \
 401       REF (form_hexa),          /* for 'X', 'x' */                            \
 402       REF (form_float),         /* for 'E', 'e', 'f', 'G', 'g' */             \
 403       REF (form_character),     /* for 'c' */                                 \
 404       REF (form_string),        /* for 's', 'S' */                            \
 405       REF (form_pointer),       /* for 'p' */                                 \
 406       REF (form_number),        /* for 'n' */                                 \
 407       REF (form_strerror),      /* for 'm' */                                 \
 408       REF (form_wcharacter)     /* for 'C' */                                 \
 409     }
 410
 411
 412 #define process_arg(fspec)                                                    \
 413       /* Start real work.  We know about all flags and modifiers and          \
 414          now process the wanted format specifier.  */                         \
 415     LABEL (form_percent):                                                     \
 416       /* Write a literal "%".  */                                             \
 417       outchar ('%');                                                          \
 418       break;                                                                  \
 419                                                                               \
 420     LABEL (form_integer):                                                     \
 421       /* Signed decimal integer.  */                                          \
 422       base = 10;                                                              \
 423                                                                               \
 424       if (is_longlong)                                                        \
 425         {                                                                     \
 426           long long int signed_number;                                        \
 427                                                                               \
 428           if (fspec == NULL)                                                  \
 429             signed_number = va_arg (ap, long long int);                       \
 430           else                                                                \
 431             signed_number = args_value[fspec->data_arg].pa_long_long_int;     \
 432                                                                               \
 433           is_negative = signed_number < 0;                                    \
 434           number.longlong = is_negative ? (- signed_number) : signed_number;  \
 435                                                                               \
 436           goto LABEL (longlong_number);                                       \
 437         }                                                                     \
 438       else                                                                    \
 439         {                                                                     \
 440           long int signed_number;                                             \
 441                                                                               \
 442           if (fspec == NULL)                                                  \
 443             if (is_long)                                                      \
 444               signed_number = va_arg (ap, long int);                          \
 445             else        /* `short int' will be promoted to `int'.  */         \
 446               signed_number = va_arg (ap, int);                               \
 447           else                                                                \
 448             if (is_long)                                                      \
 449               signed_number = args_value[fspec->data_arg].pa_long_int;        \
 450             else                                                              \
 451               signed_number = args_value[fspec->data_arg].pa_int;             \
 452                                                                               \
 453           is_negative = signed_number < 0;                                    \
 454           number.word = is_negative ? (- signed_number) : signed_number;      \
 455                                                                               \
 456           goto LABEL (number);                                                \
 457         }                                                                     \
 458       /* NOTREACHED */                                                        \
 459                                                                               \
 460     LABEL (form_unsigned):                                                    \
 461       /* Unsigned decimal integer.  */                                        \
 462       base = 10;                                                              \
 463       goto LABEL (unsigned_number);                                           \
 464       /* NOTREACHED */                                                        \
 465                                                                               \
 466     LABEL (form_octal):                                                       \
 467       /* Unsigned octal integer.  */                                          \
 468       base = 8;                                                               \
 469       goto LABEL (unsigned_number);                                           \
 470       /* NOTREACHED */                                                        \
 471                                                                               \
 472     LABEL (form_hexa):                                                        \
 473       /* Unsigned hexadecimal integer.  */                                    \
 474       base = 16;                                                              \
 475                                                                               \
 476     LABEL (unsigned_number):      /* Unsigned number of base BASE.  */        \
 477                                                                               \
 478       /* ANSI specifies the `+' and ` ' flags only for signed                 \
 479          conversions.  */                                                     \
 480       is_negative = 0;                                                        \
 481       showsign = 0;                                                           \
 482       space = 0;                                                              \
 483                                                                               \
 484       if (is_longlong)                                                        \
 485         {                                                                     \
 486           if (fspec == NULL)                                                  \
 487             number.longlong = va_arg (ap, unsigned long long int);            \
 488           else                                                                \
 489             number.longlong = args_value[fspec->data_arg].pa_u_long_long_int; \
 490                                                                               \
 491         LABEL (longlong_number):                                              \
 492           if (prec < 0)                                                       \
 493             /* Supply a default precision if none was given.  */              \
 494             prec = 1;                                                         \
 495           else                                                                \
 496             /* We have to take care for the '0' flag.  If a precision         \
 497                is given it must be ignored.  */                               \
 498             pad = ' ';                                                        \
 499                                                                               \
 500           /* If the precision is 0 and the number is 0 nothing has to         \
 501              be written for the number.  */                                   \
 502           if (prec == 0 && number.longlong == 0)                              \
 503             string = workend;                                                 \
 504           else                                                                \
 505             {                                                                 \
 506               /* Put the number in WORK.  */                                  \
 507               string = _itoa (number.longlong, workend + 1, base,             \
 508                               spec == 'X');                                   \
 509               string -= 1;                                                    \
 510               if (group && grouping)                                          \
 511                 string = group_number (string, workend, grouping,             \
 512                                        thousands_sep);                        \
 513             }                                                                 \
 514           /* Simply further test for num != 0.  */                            \
 515           number.word = number.longlong != 0;                                 \
 516         }                                                                     \
 517       else                                                                    \
 518         {                                                                     \
 519           if (fspec == NULL)                                                  \
 520             if (is_long)                                                      \
 521               number.word = va_arg (ap, unsigned long int);                   \
 522             else if (!is_short)                                               \
 523               number.word = va_arg (ap, unsigned int);                        \
 524             else                                                              \
 525               number.word = (unsigned short int) va_arg (ap, unsigned int);   \
 526           else                                                                \
 527             if (is_long)                                                      \
 528               number.word = args_value[fspec->data_arg].pa_u_long_int;        \
 529             else if (!is_short)                                               \
 530               number.word = args_value[fspec->data_arg].pa_u_int;             \
 531             else                                                              \
 532               number.word = (unsigned short int)                              \
 533                 args_value[fspec->data_arg].pa_u_short_int;                   \
 534                                                                               \
 535         LABEL (number):                                                       \
 536           if (prec < 0)                                                       \
 537             /* Supply a default precision if none was given.  */              \
 538             prec = 1;                                                         \
 539           else                                                                \
 540             /* We have to take care for the '0' flag.  If a precision         \
 541                is given it must be ignored.  */                               \
 542             pad = ' ';                                                        \
 543                                                                               \
 544           /* If the precision is 0 and the number is 0 nothing has to         \
 545              be written for the number.  */                                   \
 546           if (prec == 0 && number.word == 0)                                  \
 547             string = workend;                                                 \
 548           else                                                                \
 549             {                                                                 \
 550               /* Put the number in WORK.  */                                  \
 551               string = _itoa_word (number.word, workend + 1, base,            \
 552                                    spec == 'X');                              \
 553               string -= 1;                                                    \
 554               if (group && grouping)                                          \
 555                 string = group_number (string, workend, grouping,             \
 556                                        thousands_sep);                        \
 557             }                                                                 \
 558         }                                                                     \
 559                                                                               \
 560       prec -= workend - string;                                               \
 561                                                                               \
 562       if (prec > 0)                                                           \
 563         /* Add zeros to the precision.  */                                    \
 564         while (prec-- > 0)                                                    \
 565           *string-- = '0';                                                    \
 566       else if (number.word != 0 && alt && base == 8)                          \
 567         /* Add octal marker.  */                                              \
 568         *string-- = '0';                                                      \
 569                                                                               \
 570       if (!left)                                                              \
 571         {                                                                     \
 572           width -= workend - string;                                          \
 573                                                                               \
 574           if (number.word != 0 && alt && base == 16)                          \
 575             /* Account for 0X hex marker.  */                                 \
 576             width -= 2;                                                       \
 577                                                                               \
 578           if (is_negative || showsign || space)                               \
 579             --width;                                                          \
 580                                                                               \
 581           if (pad == '0')                                                     \
 582             {                                                                 \
 583               while (width-- > 0)                                             \
 584                 *string-- = '0';                                              \
 585                                                                               \
 586               if (number.word != 0 && alt && base == 16)                      \
 587                 {                                                             \
 588                   *string-- = spec;                                           \
 589                   *string-- = '0';                                            \
 590                 }                                                             \
 591                                                                               \
 592               if (is_negative)                                                \
 593                 *string-- = '-';                                              \
 594               else if (showsign)                                              \
 595                 *string-- = '+';                                              \
 596               else if (space)                                                 \
 597                 *string-- = ' ';                                              \
 598             }                                                                 \
 599           else                                                                \
 600             {                                                                 \
 601               if (number.word != 0 && alt && base == 16)                      \
 602                 {                                                             \
 603                   *string-- = spec;                                           \
 604                   *string-- = '0';                                            \
 605                 }                                                             \
 606                                                                               \
 607               if (is_negative)                                                \
 608                 *string-- = '-';                                              \
 609               else if (showsign)                                              \
 610                 *string-- = '+';                                              \
 611               else if (space)                                                 \
 612                 *string-- = ' ';                                              \
 613                                                                               \
 614               while (width-- > 0)                                             \
 615                 *string-- = ' ';                                              \
 616             }                                                                 \
 617                                                                               \
 618           outstring (string + 1, workend - string);                           \
 619                                                                               \
 620           break;                                                              \
 621         }                                                                     \
 622       else                                                                    \
 623         {                                                                     \
 624           if (number.word != 0 && alt && base == 16)                          \
 625             {                                                                 \
 626               *string-- = spec;                                               \
 627               *string-- = '0';                                                \
 628             }                                                                 \
 629                                                                               \
 630           if (is_negative)                                                    \
 631             *string-- = '-';                                                  \
 632           else if (showsign)                                                  \
 633             *string-- = '+';                                                  \
 634           else if (space)                                                     \
 635             *string-- = ' ';                                                  \
 636                                                                               \
 637           width -= workend - string;                                          \
 638           outstring (string + 1, workend - string);                           \
 639                                                                               \
 640           PAD (' ');                                                          \
 641           break;                                                              \
 642         }                                                                     \
 643                                                                               \
 644     LABEL (form_float):                                                       \
 645       {                                                                       \
 646         /* Floating-point number.  This is handled by printf_fp.c.  */        \
 647         extern int __printf_fp __P ((FILE *, const struct printf_info *,      \
 648                                      const void **const));                    \
 649         const void *ptr;                                                      \
 650         int function_done;                                                    \
 651                                                                               \
 652         if (fspec == NULL)                                                    \
 653           {                                                                   \
 654             struct printf_info info = { prec: prec,                           \
 655                                         width: width,                         \
 656                                         spec: spec,                           \
 657                                         is_long_double: is_long_double,       \
 658                                         is_short: is_short,                   \
 659                                         is_long: is_long,                     \
 660                                         alt: alt,                             \
 661                                         space: space,                         \
 662                                         left: left,                           \
 663                                         showsign: showsign,                   \
 664                                         group: group,                         \
 665                                         pad: pad,                             \
 666                                         extra: 0 };                           \
 667                                                                               \
 668             if (is_long_double)                                               \
 669               the_arg.pa_long_double = va_arg (ap, long double);              \
 670             else                                                              \
 671               the_arg.pa_double = va_arg (ap, double);                        \
 672             ptr = (const void *) &the_arg;                                    \
 673                                                                               \
 674             function_done = __printf_fp (s, &info, &ptr);                     \
 675           }                                                                   \
 676         else                                                                  \
 677           {                                                                   \
 678             ptr = (const void *) &args_value[fspec->data_arg];                \
 679                                                                               \
 680             function_done = __printf_fp (s, &fspec->info, &ptr);              \
 681           }                                                                   \
 682                                                                               \
 683         if (function_done < 0)                                                \
 684           /* Error in print handler.  */                                      \
 685           return -1;                                                          \
 686                                                                               \
 687         done += function_done;                                                \
 688       }                                                                       \
 689       break;                                                                  \
 690                                                                               \
 691     LABEL (form_character):                                                   \
 692       /* Character.  */                                                       \
 693       if (is_long)                                                            \
 694         goto LABEL (form_wcharacter);                                         \
 695       --width;  /* Account for the character itself.  */                      \
 696       if (!left)                                                              \
 697         PAD (' ');                                                            \
 698       if (fspec == NULL)                                                      \
 699         outchar ((unsigned char) va_arg (ap, int)); /* Promoted.  */          \
 700       else                                                                    \
 701         outchar ((unsigned char) args_value[fspec->data_arg].pa_char);        \
 702       if (left)                                                               \
 703         PAD (' ');                                                            \
 704       break;                                                                  \
 705                                                                               \
 706     LABEL (form_wcharacter):                                                  \
 707       {                                                                       \
 708         /* Wide character.  */                                                \
 709         char buf[MB_CUR_MAX];                                                 \
 710         mbstate_t mbstate;                                                    \
 711         size_t len;                                                           \
 712                                                                               \
 713         len = __wcrtomb (buf, (fspec == NULL ? va_arg (ap, wint_t)            \
 714                                : args_value[fspec->data_arg].pa_wchar),       \
 715                          &mbstate);                                           \
 716         width -= len;                                                         \
 717         if (!left)                                                            \
 718           PAD (' ');                                                          \
 719         outstring (buf, len);                                                 \
 720         if (left)                                                             \
 721           PAD (' ');                                                          \
 722       }                                                                       \
 723       break;                                                                  \
 724                                                                               \
 725     LABEL (form_string):                                                      \
 726       {                                                                       \
 727         size_t len;                                                           \
 728                                                                               \
 729         /* The string argument could in fact be `char *' or `wchar_t *'.      \
 730            But this should not make a difference here.  */                    \
 731         if (fspec == NULL)                                                    \
 732           string = (char *) va_arg (ap, const char *);                        \
 733         else                                                                  \
 734           string = (char *) args_value[fspec->data_arg].pa_string;            \
 735                                                                               \
 736         /* Entry point for printing other strings.  */                        \
 737       LABEL (print_string):                                                   \
 738                                                                               \
 739         if (string == NULL)                                                   \
 740           {                                                                   \
 741             /* Write "(null)" if there's space.  */                           \
 742             if (prec == -1 || prec >= (int) sizeof (null) - 1)                \
 743               {                                                               \
 744                 string = (char *) null;                                       \
 745                 len = sizeof (null) - 1;                                      \
 746               }                                                               \
 747             else                                                              \
 748               {                                                               \
 749                 string = (char *) "";                                         \
 750                 len = 0;                                                      \
 751               }                                                               \
 752           }                                                                   \
 753         else if (!is_long && spec != L_('S'))                                 \
 754           {                                                                   \
 755             if (prec != -1)                                                   \
 756               /* Search for the end of the string, but don't search past      \
 757                  the length specified by the precision.  */                   \
 758               len = strnlen (string, prec);                                   \
 759             else                                                              \
 760               len = strlen (string);                                          \
 761           }                                                                   \
 762         else                                                                  \
 763           {                                                                   \
 764             const wchar_t *s2 = (const wchar_t *) string;                     \
 765             mbstate_t mbstate;                                                \
 766                                                                               \
 767             len = __wcsrtombs (NULL, &s2, 0, &mbstate);                       \
 768             if (len == (size_t) -1)                                           \
 769               /* Illegal wide-character string.  */                           \
 770               return -1;                                                      \
 771                                                                               \
 772             s2 = (const wchar_t *) string;                                    \
 773             string = alloca (len + 1);                                        \
 774             (void) __wcsrtombs (string, &s2, prec != -1 ? prec : UINT_MAX,    \
 775                                 &mbstate);                                    \
 776           }                                                                   \
 777                                                                               \
 778         if ((width -= len) < 0)                                               \
 779           {                                                                   \
 780             outstring (string, len);                                          \
 781             break;                                                            \
 782           }                                                                   \
 783                                                                               \
 784         if (!left)                                                            \
 785           PAD (' ');                                                          \
 786         outstring (string, len);                                              \
 787         if (left)                                                             \
 788           PAD (' ');                                                          \
 789       }                                                                       \
 790       break;                                                                  \
 791                                                                               \
 792     LABEL (form_pointer):                                                     \
 793       /* Generic pointer.  */                                                 \
 794       {                                                                       \
 795         const void *ptr;                                                      \
 796         if (fspec == NULL)                                                    \
 797           ptr = va_arg (ap, void *);                                          \
 798         else                                                                  \
 799           ptr = args_value[fspec->data_arg].pa_pointer;                       \
 800         if (ptr != NULL)                                                      \
 801           {                                                                   \
 802             /* If the pointer is not NULL, write it as a %#x spec.  */        \
 803             base = 16;                                                        \
 804             number.word = (unsigned long int) ptr;                            \
 805             is_negative = 0;                                                  \
 806             alt = 1;                                                          \
 807             group = 0;                                                        \
 808             spec = 'x';                                                       \
 809             goto LABEL (number);                                              \
 810           }                                                                   \
 811         else                                                                  \
 812           {                                                                   \
 813             /* Write "(nil)" for a nil pointer.  */                           \
 814             string = (char *) "(nil)";                                        \
 815             /* Make sure the full string "(nil)" is printed.  */              \
 816             if (prec < 5)                                                     \
 817               prec = 5;                                                       \
 818             is_long = 0;        /* This is no wide-char string.  */           \
 819             goto LABEL (print_string);                                        \
 820           }                                                                   \
 821       }                                                                       \
 822       /* NOTREACHED */                                                        \
 823                                                                               \
 824     LABEL (form_number):                                                      \
 825       /* Answer the count of characters written.  */                          \
 826       if (fspec == NULL)                                                      \
 827         if (is_longlong)                                                      \
 828           *(long long int *) va_arg (ap, void *) = done;                      \
 829         else if (is_long)                                                     \
 830           *(long int *) va_arg (ap, void *) = done;                           \
 831         else if (!is_short)                                                   \
 832           *(int *) va_arg (ap, void *) = done;                                \
 833         else                                                                  \
 834           *(short int *) va_arg (ap, void *) = done;                          \
 835       else                                                                    \
 836         if (is_longlong)                                                      \
 837           *(long long int *) args_value[fspec->data_arg].pa_pointer = done;   \
 838         else if (is_long)                                                     \
 839           *(long int *) args_value[fspec->data_arg].pa_pointer = done;        \
 840         else if (!is_short)                                                   \
 841           *(int *) args_value[fspec->data_arg].pa_pointer = done;             \
 842         else                                                                  \
 843           *(short int *) args_value[fspec->data_arg].pa_pointer = done;       \
 844       break;                                                                  \
 845                                                                               \
 846     LABEL (form_strerror):                                                    \
 847       /* Print description of error ERRNO.  */                                \
 848       {                                                                       \
 849         extern char *_strerror_internal __P ((int, char *buf, size_t));       \
 850                                                                               \
 851         string = (char *)                                                     \
 852           _strerror_internal (errno, work_buffer, sizeof work_buffer);        \
 853       }                                                                       \
 854       is_long = 0;              /* This is no wide-char string.  */           \
 855       goto LABEL (print_string)
 856
 857
 858   /* Sanity check of arguments.  */
 859   ARGCHECK (s, format);
 860
 861   if (UNBUFFERED_P (s))
 862     /* Use a helper function which will allocate a local temporary buffer
 863        for the stream and then call us again.  */
 864     return buffered_vfprintf (s, format, ap);
 865
 866   /* Initialize local variables.  */
 867   done = 0;
 868   grouping = (const char *) -1;
 869   ap_save = ap;
 870   nspecs_done = 0;
 871
 872   /* Find the first format specifier.  */
 873   f = lead_str_end = find_spec (format, &mbstate);
 874
 875   /* Lock stream.  */
 876 #ifdef USE_IN_LIBIO
 877   __libc_cleanup_region_start ((void (*) (void *)) &_IO_funlockfile, s);
 878   _IO_flockfile (s);
 879 #else
 880   __libc_cleanup_region_start ((void (*) (void *)) &__funlockfile, s);
 881   __flockfile (s);
 882 #endif
 883
 884   /* Write the literal text before the first format.  */
 885   outstring ((const UCHAR_T *) format,
 886              lead_str_end - (const UCHAR_T *) format);
 887
 888   /* If we only have to print a simple string, return now.  */
 889   if (*f == L_('\0'))
 890     goto all_done;
 891
 892   /* Process whole format string.  */
 893   do
 894     {
 895 #define REF(Name) &&do_##Name
 896 #define LABEL(Name) do_##Name
 897       STEP0_3_TABLE;
 898       STEP4_TABLE;
 899
 900       union printf_arg *args_value;     /* This is not used here but ... */
 901       int is_negative;  /* Flag for negative number.  */
 902       union
 903       {
 904         unsigned long long int longlong;
 905         unsigned long int word;
 906       } number;
 907       int base;
 908       union printf_arg the_arg;
 909       char *string;     /* Pointer to argument string.  */
 910       int alt = 0;      /* Alternate format.  */
 911       int space = 0;    /* Use space prefix if no sign is needed.  */
 912       int left = 0;     /* Left-justify output.  */
 913       int showsign = 0; /* Always begin with plus or minus sign.  */
 914       int group = 0;    /* Print numbers according grouping rules.  */
 915       int is_long_double = 0; /* Argument is long double/ long long int.  */
 916       int is_short = 0; /* Argument is long int.  */
 917       int is_long = 0;  /* Argument is short int.  */
 918       int width = 0;    /* Width of output; 0 means none specified.  */
 919       int prec = -1;    /* Precision of output; -1 means none specified.  */
 920       char pad = ' ';   /* Padding character.  */
 921       CHAR_T spec;
 922
 923       /* Get current character in format string.  */
 924       JUMP (*++f, step0_jumps);
 925
 926       /* ' ' flag.  */
 927     LABEL (flag_space):
 928       space = 1;
 929       JUMP (*++f, step0_jumps);
 930
 931       /* '+' flag.  */
 932     LABEL (flag_plus):
 933       showsign = 1;
 934       JUMP (*++f, step0_jumps);
 935
 936       /* The '-' flag.  */
 937     LABEL (flag_minus):
 938       left = 1;
 939       pad = L_(' ');
 940       JUMP (*++f, step0_jumps);
 941
 942       /* The '#' flag.  */
 943     LABEL (flag_hash):
 944       alt = 1;
 945       JUMP (*++f, step0_jumps);
 946
 947       /* The '0' flag.  */
 948     LABEL (flag_zero):
 949       if (!left)
 950         pad = L_('0');
 951       JUMP (*++f, step0_jumps);
 952
 953       /* The '\'' flag.  */
 954     LABEL (flag_quote):
 955       group = 1;
 956
 957       /* XXX Completely wrong.  Use wctob.  */
 958       if (grouping == (const char *) -1)
 959         {
 960           /* Figure out the thousands separator character.  */
 961           if (mbtowc (&thousands_sep,
 962                       _NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP),
 963                       strlen (_NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP))) <= 0)
 964             thousands_sep = (wchar_t)
 965               *_NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP);
 966           grouping = _NL_CURRENT (LC_NUMERIC, GROUPING);
 967           if (*grouping == '\0' || *grouping == CHAR_MAX
 968               || thousands_sep == L'\0')
 969             grouping = NULL;
 970         }
 971       JUMP (*++f, step0_jumps);
 972
 973       /* Get width from argument.  */
 974     LABEL (width_asterics):
 975       {
 976         const UCHAR_T *tmp;     /* Temporary value.  */
 977
 978         tmp = ++f;
 979         if (ISDIGIT (*tmp) && read_int (&tmp) && *tmp == L_('$'))
 980           /* The width comes from a positional parameter.  */
 981           goto do_positional;
 982
 983         width = va_arg (ap, int);
 984
 985         /* Negative width means left justified.  */
 986         if (width < 0)
 987           {
 988             width = -width;
 989             pad = L_(' ');
 990             left = 1;
 991           }
 992       }
 993       JUMP (*f, step1_jumps);
 994
 995       /* Given width in format string.  */
 996     LABEL (width):
 997       width = read_int (&f);
 998       if (*f == L_('$'))
 999         /* Oh, oh.  The argument comes from a positional parameter.  */
1000         goto do_positional;
1001       JUMP (*f, step1_jumps);
1002
1003     LABEL (precision):
1004       ++f;
1005       if (*f == L_('*'))
1006         {
1007           const UCHAR_T *tmp;   /* Temporary value.  */
1008
1009           tmp = ++f;
1010           if (ISDIGIT (*tmp) && read_int (&tmp) > 0 && *tmp == L_('$'))
1011             /* The precision comes from a positional parameter.  */
1012             goto do_positional;
1013
1014           prec = va_arg (ap, int);
1015
1016           /* If the precision is negative the precision is omitted.  */
1017           if (prec < 0)
1018             prec = -1;
1019         }
1020       else if (ISDIGIT (*f))
1021         prec = read_int (&f);
1022       else
1023         prec = 0;
1024       JUMP (*f, step2_jumps);
1025
1026       /* Process 'h' modifier.  No other modifier is allowed to
1027          follow.  */
1028     LABEL (mod_half):
1029       is_short = 1;
1030       JUMP (*++f, step4_jumps);
1031
1032       /* Process 'l' modifier.  There might another 'l' follow.  */
1033     LABEL (mod_long):
1034       is_long = 1;
1035       JUMP (*++f, step3_jumps);
1036
1037       /* Process 'L', 'q', or 'll' modifier.  No other modifier is
1038          allowed to follow.  */
1039     LABEL (mod_longlong):
1040       is_long_double = 1;
1041       JUMP (*++f, step4_jumps);
1042
1043     LABEL (mod_size_t):
1044       is_longlong = sizeof (size_t) > sizeof (unsigned long int);
1045       is_long = sizeof (size_t) > sizeof (unsigned int);
1046       JUMP (*++f, step4_jumps);
1047
1048
1049       /* Process current format.  */
1050       while (1)
1051         {
1052           process_arg (((struct printf_spec *) NULL));
1053
1054         LABEL (form_unknown):
1055           if (spec == L_('\0'))
1056             {
1057               /* The format string ended before the specifier is complete.  */
1058               done = -1;
1059               goto all_done;
1060             }
1061
1062           /* If we are in the fast loop force entering the complicated
1063              one.  */
1064           goto do_positional;
1065         }
1066
1067       /* Look for next format specifier.  */
1068       f = find_spec ((end_of_spec = ++f), &mbstate);
1069
1070       /* Write the following constant string.  */
1071       outstring (end_of_spec, f - end_of_spec);
1072     }
1073   while (*f != L_('\0'));
1074
1075   /* Unlock stream and return.  */
1076   goto all_done;
1077
1078   /* Here starts the more complex loop to handle positional parameters.  */
1079 do_positional:
1080   {
1081     /* Array with information about the needed arguments.  This has to
1082        be dynamically extendable.  */
1083     size_t nspecs = 0;
1084     size_t nspecs_max = 32;     /* A more or less arbitrary start value.  */
1085     struct printf_spec *specs
1086       = alloca (nspecs_max * sizeof (struct printf_spec));
1087
1088     /* The number of arguments the format string requests.  This will
1089        determine the size of the array needed to store the argument
1090        attributes.  */
1091     size_t nargs = 0;
1092     int *args_type;
1093     union printf_arg *args_value;
1094
1095     /* Positional parameters refer to arguments directly.  This could
1096        also determine the maximum number of arguments.  Track the
1097        maximum number.  */
1098     size_t max_ref_arg = 0;
1099
1100     /* Just a counter.  */
1101     size_t cnt;
1102
1103
1104     if (grouping == (const char *) -1)
1105       {
1106         /* XXX Use wctob.  But this is incompatible for now.  */
1107         /* Figure out the thousands separator character.  */
1108         if (mbtowc (&thousands_sep,
1109                     _NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP),
1110                     strlen (_NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP))) <= 0)
1111           thousands_sep = (wchar_t) *_NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP);
1112         grouping = _NL_CURRENT (LC_NUMERIC, GROUPING);
1113         if (*grouping == '\0' || *grouping == CHAR_MAX
1114             || thousands_sep == L'\0')
1115           grouping = NULL;
1116       }
1117
1118     for (f = lead_str_end; *f != '\0'; f = specs[nspecs++].next_fmt)
1119       {
1120         if (nspecs >= nspecs_max)
1121           {
1122             /* Extend the array of format specifiers.  */
1123             struct printf_spec *old = specs;
1124
1125             nspecs_max *= 2;
1126             specs = alloca (nspecs_max * sizeof (struct printf_spec));
1127
1128             if (specs == &old[nspecs])
1129               /* Stack grows up, OLD was the last thing allocated;
1130                  extend it.  */
1131               nspecs_max += nspecs_max / 2;
1132             else
1133               {
1134                 /* Copy the old array's elements to the new space.  */
1135                 memcpy (specs, old, nspecs * sizeof (struct printf_spec));
1136                 if (old == &specs[nspecs])
1137                   /* Stack grows down, OLD was just below the new
1138                      SPECS.  We can use that space when the new space
1139                      runs out.  */
1140                   nspecs_max += nspecs_max / 2;
1141               }
1142           }
1143
1144         /* Parse the format specifier.  */
1145         nargs += parse_one_spec (f, nargs, &specs[nspecs], &max_ref_arg,
1146                                  &mbstate);
1147       }
1148
1149     /* Determine the number of arguments the format string consumes.  */
1150     nargs = MAX (nargs, max_ref_arg);
1151
1152     /* Allocate memory for the argument descriptions.  */
1153     args_type = alloca (nargs * sizeof (int));
1154     memset (args_type, 0, nargs * sizeof (int));
1155     args_value = alloca (nargs * sizeof (union printf_arg));
1156
1157     /* XXX Could do sanity check here: If any element in ARGS_TYPE is
1158        still zero after this loop, format is invalid.  For now we
1159        simply use 0 as the value.  */
1160
1161     /* Fill in the types of all the arguments.  */
1162     for (cnt = 0; cnt < nspecs; ++cnt)
1163       {
1164         /* If the width is determined by an argument this is an int.  */
1165         if (specs[cnt].width_arg != -1)
1166           args_type[specs[cnt].width_arg] = PA_INT;
1167
1168         /* If the precision is determined by an argument this is an int.  */
1169         if (specs[cnt].prec_arg != -1)
1170           args_type[specs[cnt].prec_arg] = PA_INT;
1171
1172         switch (specs[cnt].ndata_args)
1173           {
1174           case 0:               /* No arguments.  */
1175             break;
1176           case 1:               /* One argument; we already have the type.  */
1177             args_type[specs[cnt].data_arg] = specs[cnt].data_arg_type;
1178             break;
1179           default:
1180             /* We have more than one argument for this format spec.
1181                We must call the arginfo function again to determine
1182                all the types.  */
1183             (void) (*__printf_arginfo_table[specs[cnt].info.spec])
1184               (&specs[cnt].info,
1185                specs[cnt].ndata_args, &args_type[specs[cnt].data_arg]);
1186             break;
1187           }
1188       }
1189
1190     /* Now we know all the types and the order.  Fill in the argument
1191        values.  */
1192     for (cnt = 0, ap = ap_save; cnt < nargs; ++cnt)
1193       switch (args_type[cnt])
1194         {
1195 #define T(tag, mem, type)                                                     \
1196         case tag:                                                             \
1197           args_value[cnt].mem = va_arg (ap, type);                            \
1198           break
1199
1200         T (PA_CHAR, pa_char, int); /* Promoted.  */
1201         T (PA_WCHAR, pa_wchar, wint_t);
1202         T (PA_INT|PA_FLAG_SHORT, pa_short_int, int); /* Promoted.  */
1203         T (PA_INT, pa_int, int);
1204         T (PA_INT|PA_FLAG_LONG, pa_long_int, long int);
1205         T (PA_INT|PA_FLAG_LONG_LONG, pa_long_long_int, long long int);
1206         T (PA_FLOAT, pa_float, double); /* Promoted.  */
1207         T (PA_DOUBLE, pa_double, double);
1208         T (PA_DOUBLE|PA_FLAG_LONG_DOUBLE, pa_long_double, long double);
1209         T (PA_STRING, pa_string, const char *);
1210         T (PA_WSTRING, pa_wstring, const wchar_t *);
1211         T (PA_POINTER, pa_pointer, void *);
1212 #undef T
1213         default:
1214           if ((args_type[cnt] & PA_FLAG_PTR) != 0)
1215             args_value[cnt].pa_pointer = va_arg (ap, void *);
1216           else
1217             args_value[cnt].pa_long_double = 0.0;
1218           break;
1219         }
1220
1221     /* Now walk through all format specifiers and process them.  */
1222     for (; (size_t) nspecs_done < nspecs; ++nspecs_done)
1223       {
1224 #undef REF
1225 #define REF(Name) &&do2_##Name
1226 #undef LABEL
1227 #define LABEL(Name) do2_##Name
1228         STEP4_TABLE;
1229
1230         int is_negative;
1231         union
1232         {
1233           unsigned long long int longlong;
1234           unsigned long int word;
1235         } number;
1236         int base;
1237         union printf_arg the_arg;
1238         char *string;   /* Pointer to argument string.  */
1239
1240         /* Fill variables from values in struct.  */
1241         int alt = specs[nspecs_done].info.alt;
1242         int space = specs[nspecs_done].info.space;
1243         int left = specs[nspecs_done].info.left;
1244         int showsign = specs[nspecs_done].info.showsign;
1245         int group = specs[nspecs_done].info.group;
1246         int is_long_double = specs[nspecs_done].info.is_long_double;
1247         int is_short = specs[nspecs_done].info.is_short;
1248         int is_long = specs[nspecs_done].info.is_long;
1249         int width = specs[nspecs_done].info.width;
1250         int prec = specs[nspecs_done].info.prec;
1251         char pad = specs[nspecs_done].info.pad;
1252         CHAR_T spec = specs[nspecs_done].info.spec;
1253
1254         /* Fill in last information.  */
1255         if (specs[nspecs_done].width_arg != -1)
1256           {
1257             /* Extract the field width from an argument.  */
1258             specs[nspecs_done].info.width =
1259               args_value[specs[nspecs_done].width_arg].pa_int;
1260
1261             if (specs[nspecs_done].info.width < 0)
1262               /* If the width value is negative left justification is
1263                  selected and the value is taken as being positive.  */
1264               {
1265                 specs[nspecs_done].info.width *= -1;
1266                 left = specs[nspecs_done].info.left = 1;
1267               }
1268             width = specs[nspecs_done].info.width;
1269           }
1270
1271         if (specs[nspecs_done].prec_arg != -1)
1272           {
1273             /* Extract the precision from an argument.  */
1274             specs[nspecs_done].info.prec =
1275               args_value[specs[nspecs_done].prec_arg].pa_int;
1276
1277             if (specs[nspecs_done].info.prec < 0)
1278               /* If the precision is negative the precision is
1279                  omitted.  */
1280               specs[nspecs_done].info.prec = -1;
1281
1282             prec = specs[nspecs_done].info.prec;
1283           }
1284
1285         /* Process format specifiers.  */
1286         while (1)
1287           {
1288             JUMP (spec, step4_jumps);
1289
1290             process_arg ((&specs[nspecs_done]));
1291
1292           LABEL (form_unknown):
1293             {
1294               extern printf_function **__printf_function_table;
1295               int function_done;
1296               printf_function *function;
1297               unsigned int i;
1298               const void **ptr;
1299
1300               function =
1301                 (__printf_function_table == NULL ? NULL :
1302                  __printf_function_table[specs[nspecs_done].info.spec]);
1303
1304               if (function == NULL)
1305                 function = &printf_unknown;
1306
1307               ptr = alloca (specs[nspecs_done].ndata_args
1308                             * sizeof (const void *));
1309
1310               /* Fill in an array of pointers to the argument values.  */
1311               for (i = 0; i < specs[nspecs_done].ndata_args; ++i)
1312                 ptr[i] = &args_value[specs[nspecs_done].data_arg + i];
1313
1314               /* Call the function.  */
1315               function_done = (*function) (s, &specs[nspecs_done].info, ptr);
1316
1317               /* If an error occured we don't have information about #
1318                  of chars.  */
1319               if (function_done < 0)
1320                 {
1321                   done = -1;
1322                   goto all_done;
1323                 }
1324
1325               done += function_done;
1326             }
1327             break;
1328           }
1329
1330         /* Write the following constant string.  */
1331         outstring (specs[nspecs_done].end_of_fmt,
1332                    specs[nspecs_done].next_fmt
1333                    - specs[nspecs_done].end_of_fmt);
1334       }
1335   }
1336
1337 all_done:
1338   /* Unlock the stream.  */
1339   __libc_cleanup_region_end (1);
1340
1341   return done;
1342 }
1343
1344 #ifdef USE_IN_LIBIO
1345 # undef vfprintf
1346 # ifdef strong_alias
1347 /* This is for glibc.  */
1348 strong_alias (_IO_vfprintf, vfprintf);
1349 # else
1350 #  if defined __ELF__ || defined __GNU_LIBRARY__
1351 #   include <gnu-stabs.h>
1352 #   ifdef weak_alias
1353 weak_alias (_IO_vfprintf, vfprintf);
1354 #   endif
1355 #  endif
1356 # endif
1357 #endif
1358 \f
1359 /* Handle an unknown format specifier.  This prints out a canonicalized
1360    representation of the format spec itself.  */
1361 static int
1362 printf_unknown (FILE *s, const struct printf_info *info,
1363                 const void *const *args)
1364
1365 {
1366   int done = 0;
1367   char work_buffer[BUFSIZ];
1368   register char *w;
1369
1370   outchar ('%');
1371
1372   if (info->alt)
1373     outchar ('#');
1374   if (info->group)
1375     outchar ('\'');
1376   if (info->showsign)
1377     outchar ('+');
1378   else if (info->space)
1379     outchar (' ');
1380   if (info->left)
1381     outchar ('-');
1382   if (info->pad == '0')
1383     outchar ('0');
1384
1385   if (info->width != 0)
1386     {
1387       w = _itoa_word (info->width, workend + 1, 10, 0);
1388       while (++w <= workend)
1389         outchar (*w);
1390     }
1391
1392   if (info->prec != -1)
1393     {
1394       outchar ('.');
1395       w = _itoa_word (info->prec, workend + 1, 10, 0);
1396       while (++w <= workend)
1397         outchar (*w);
1398     }
1399
1400   if (info->spec != '\0')
1401     outchar (info->spec);
1402
1403   return done;
1404 }
1405 \f
1406 /* Group the digits according to the grouping rules of the current locale.
1407    The interpretation of GROUPING is as in `struct lconv' from <locale.h>.  */
1408 static char *
1409 group_number (CHAR_T *w, CHAR_T *rear_ptr, const CHAR_T *grouping,
1410               wchar_t thousands_sep)
1411 {
1412   int len;
1413   char *src, *s;
1414
1415   /* We treat all negative values like CHAR_MAX.  */
1416
1417   if (*grouping == CHAR_MAX || *grouping < 0)
1418     /* No grouping should be done.  */
1419     return w;
1420
1421   len = *grouping;
1422
1423   /* Copy existing string so that nothing gets overwritten.  */
1424   src = (char *) alloca (rear_ptr - w);
1425   memcpy (src, w + 1, rear_ptr - w);
1426   s = &src[rear_ptr - w - 1];
1427   w = rear_ptr;
1428
1429   /* Process all characters in the string.  */
1430   while (s >= src)
1431     {
1432       *w-- = *s--;
1433
1434       if (--len == 0 && s >= src)
1435         {
1436           /* A new group begins.  */
1437           *w-- = thousands_sep;
1438
1439           len = *grouping++;
1440           if (*grouping == '\0')
1441             /* The previous grouping repeats ad infinitum.  */
1442             --grouping;
1443           else if (*grouping == CHAR_MAX || *grouping < 0)
1444             {
1445               /* No further grouping to be done.
1446                  Copy the rest of the number.  */
1447               do
1448                 *w-- = *s--;
1449               while (s >= src);
1450               break;
1451             }
1452         }
1453     }
1454   return w;
1455 }
1456 \f
1457 #ifdef USE_IN_LIBIO
1458 /* Helper "class" for `fprintf to unbuffered': creates a temporary buffer.  */
1459 struct helper_file
1460   {
1461     struct _IO_FILE_plus _f;
1462     _IO_FILE *_put_stream;
1463 #ifdef _IO_MTSAFE_IO
1464     _IO_lock_t lock;
1465 #endif
1466   };
1467
1468 static int
1469 _IO_helper_overflow (_IO_FILE *s, int c)
1470 {
1471   _IO_FILE *target = ((struct helper_file*) s)->_put_stream;
1472   int used = s->_IO_write_ptr - s->_IO_write_base;
1473   if (used)
1474     {
1475       _IO_size_t written = _IO_sputn (target, s->_IO_write_base, used);
1476       s->_IO_write_ptr -= written;
1477     }
1478   return PUTC (c, s);
1479 }
1480
1481 static const struct _IO_jump_t _IO_helper_jumps =
1482 {
1483   JUMP_INIT_DUMMY,
1484   JUMP_INIT (finish, _IO_default_finish),
1485   JUMP_INIT (overflow, _IO_helper_overflow),
1486   JUMP_INIT (underflow, _IO_default_underflow),
1487   JUMP_INIT (uflow, _IO_default_uflow),
1488   JUMP_INIT (pbackfail, _IO_default_pbackfail),
1489   JUMP_INIT (xsputn, _IO_default_xsputn),
1490   JUMP_INIT (xsgetn, _IO_default_xsgetn),
1491   JUMP_INIT (seekoff, _IO_default_seekoff),
1492   JUMP_INIT (seekpos, _IO_default_seekpos),
1493   JUMP_INIT (setbuf, _IO_default_setbuf),
1494   JUMP_INIT (sync, _IO_default_sync),
1495   JUMP_INIT (doallocate, _IO_default_doallocate),
1496   JUMP_INIT (read, _IO_default_read),
1497   JUMP_INIT (write, _IO_default_write),
1498   JUMP_INIT (seek, _IO_default_seek),
1499   JUMP_INIT (close, _IO_default_close),
1500   JUMP_INIT (stat, _IO_default_stat)
1501 };
1502
1503 static int
1504 buffered_vfprintf (register _IO_FILE *s, const CHAR_T *format,
1505                    _IO_va_list args)
1506 {
1507   char buf[_IO_BUFSIZ];
1508   struct helper_file helper;
1509   register _IO_FILE *hp = (_IO_FILE *) &helper;
1510   int result, to_flush;
1511
1512   /* Initialize helper.  */
1513   helper._put_stream = s;
1514   hp->_IO_write_base = buf;
1515   hp->_IO_write_ptr = buf;
1516   hp->_IO_write_end = buf + sizeof buf;
1517   hp->_IO_file_flags = _IO_MAGIC|_IO_NO_READS;
1518 #ifdef _IO_MTSAFE_IO
1519   hp->_lock = &helper.lock;
1520   __libc_lock_init (*hp->_lock);
1521 #endif
1522   _IO_JUMPS (hp) = (struct _IO_jump_t *) &_IO_helper_jumps;
1523
1524   /* Now print to helper instead.  */
1525   result = _IO_vfprintf (hp, format, args);
1526
1527   /* Now flush anything from the helper to the S. */
1528   if ((to_flush = hp->_IO_write_ptr - hp->_IO_write_base) > 0)
1529     {
1530       if ((int) _IO_sputn (s, hp->_IO_write_base, to_flush) != to_flush)
1531         return -1;
1532     }
1533
1534   return result;
1535 }
1536
1537 #else /* !USE_IN_LIBIO */
1538
1539 static int
1540 buffered_vfprintf (register FILE *s, const CHAR_T *format, va_list args)
1541 {
1542   char buf[BUFSIZ];
1543   int result;
1544
1545   s->__bufp = s->__buffer = buf;
1546   s->__bufsize = sizeof buf;
1547   s->__put_limit = s->__buffer + s->__bufsize;
1548   s->__get_limit = s->__buffer;
1549
1550   /* Now use buffer to print.  */
1551   result = vfprintf (s, format, args);
1552
1553   if (fflush (s) == EOF)
1554     result = -1;
1555   s->__buffer = s->__bufp = s->__get_limit = s->__put_limit = NULL;
1556   s->__bufsize = 0;
1557
1558   return result;
1559 }
1560 \f
1561 /* Pads string with given number of a specified character.
1562    This code is taken from iopadn.c of the GNU I/O library.  */
1563 #define PADSIZE 16
1564 static const CHAR_T blanks[PADSIZE] =
1565 { L_(' '), L_(' '), L_(' '), L_(' '), L_(' '), L_(' '), L_(' '), L_(' '),
1566   L_(' '), L_(' '), L_(' '), L_(' '), L_(' '), L_(' '), L_(' '), L_(' ') };
1567 static const CHAR_T zeroes[PADSIZE] =
1568 { L_('0'), L_('0'), L_('0'), L_('0'), L_('0'), L_('0'), L_('0'), L_('0'),
1569   L_('0'), L_('0'), L_('0'), L_('0'), L_('0'), L_('0'), L_('0'), L_('0') };
1570
1571 ssize_t
1572 #ifndef COMPILE_WPRINTF
1573 __printf_pad (FILE *s, char pad, size_t count)
1574 #else
1575 __wprintf_pad (FILE *s, wchar_t pad, size_t count)
1576 #endif
1577 {
1578   const CHAR_T *padptr;
1579   register size_t i;
1580
1581   padptr = pad == L_(' ') ? blanks : zeroes;
1582
1583   for (i = count; i >= PADSIZE; i -= PADSIZE)
1584     if (PUT (s, padptr, PADSIZE) != PADSIZE)
1585       return -1;
1586   if (i > 0)
1587     if (PUT (s, padptr, i) != i)
1588       return -1;
1589
1590   return count;
1591 }
1592 #undef PADSIZE
1593 #endif /* USE_IN_LIBIO */