1 /* Copyright (C) 1991-2022 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
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 Lesser General Public License for more details.
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
18 #include <array_length.h>
28 #include <libc-lock.h>
29 #include <sys/param.h>
31 #include <locale/localeinfo.h>
33 #include <scratch_buffer.h>
36 /* This code is shared between the standard stdio implementation found
37 in GNU C library and the libio implementation originally found in
40 Beside this it is also shared between the normal and wide character
41 implementation as defined in ISO/IEC 9899:1990/Amendment 1:1995. */
45 #ifdef COMPILE_WPRINTF
49 #define ARGCHECK(S, Format) \
52 /* Check file argument for consistence. */ \
54 if (S->_flags & _IO_NO_WRITES) \
56 S->_flags |= _IO_ERR_SEEN; \
57 __set_errno (EBADF); \
62 __set_errno (EINVAL); \
66 #define UNBUFFERED_P(S) ((S)->_flags & _IO_UNBUFFERED)
68 #if __HAVE_FLOAT128_UNLIKE_LDBL
69 # define PARSE_FLOAT_VA_ARG_EXTENDED(INFO) \
73 && (mode_flags & PRINTF_LDBL_USES_FLOAT128) != 0) \
75 INFO.is_binary128 = 1; \
76 the_arg.pa_float128 = va_arg (ap, _Float128); \
80 PARSE_FLOAT_VA_ARG (INFO); \
85 # define PARSE_FLOAT_VA_ARG_EXTENDED(INFO) \
86 PARSE_FLOAT_VA_ARG (INFO);
89 #define PARSE_FLOAT_VA_ARG(INFO) \
92 INFO.is_binary128 = 0; \
94 the_arg.pa_long_double = va_arg (ap, long double); \
96 the_arg.pa_double = va_arg (ap, double); \
100 #if __HAVE_FLOAT128_UNLIKE_LDBL
101 # define SETUP_FLOAT128_INFO(INFO) \
104 if ((mode_flags & PRINTF_LDBL_USES_FLOAT128) != 0) \
105 INFO.is_binary128 = is_long_double; \
107 INFO.is_binary128 = 0; \
111 # define SETUP_FLOAT128_INFO(INFO) \
114 INFO.is_binary128 = 0; \
119 /* Add LENGTH to DONE. Return the new value of DONE, or -1 on
120 overflow (and set errno accordingly). */
122 done_add_func (size_t length
, int done
)
127 if (INT_ADD_WRAPV (done
, length
, &ret
))
129 __set_errno (EOVERFLOW
);
135 #define done_add(val) \
138 /* Ensure that VAL has a type similar to int. */ \
139 _Static_assert (sizeof (val) == sizeof (int), "value int size"); \
140 _Static_assert ((__typeof__ (val)) -1 < 0, "value signed"); \
141 done = done_add_func ((val), done); \
147 #ifndef COMPILE_WPRINTF
148 # define vfprintf __vfprintf_internal
150 # define OTHER_CHAR_T wchar_t
151 # define UCHAR_T unsigned char
153 typedef const char *THOUSANDS_SEP_T
;
155 # define ISDIGIT(Ch) ((unsigned int) ((Ch) - '0') < 10)
156 # define STR_LEN(Str) strlen (Str)
158 # define PUT(F, S, N) _IO_sputn ((F), (S), (N))
159 # define PUTC(C, F) _IO_putc_unlocked (C, F)
160 # define ORIENT if (_IO_vtable_offset (s) == 0 && _IO_fwide (s, -1) != -1)\
162 # define CONVERT_FROM_OTHER_STRING __wcsrtombs
164 # define vfprintf __vfwprintf_internal
165 # define CHAR_T wchar_t
166 # define OTHER_CHAR_T char
167 /* This is a hack!!! There should be a type uwchar_t. */
168 # define UCHAR_T unsigned int /* uwchar_t */
169 # define INT_T wint_t
170 typedef wchar_t THOUSANDS_SEP_T
;
171 # define L_(Str) L##Str
172 # define ISDIGIT(Ch) ((unsigned int) ((Ch) - L'0') < 10)
173 # define STR_LEN(Str) __wcslen (Str)
177 # define PUT(F, S, N) _IO_sputn ((F), (S), (N))
178 # define PUTC(C, F) _IO_putwc_unlocked (C, F)
179 # define ORIENT if (_IO_fwide (s, 1) != 1) return -1
180 # define CONVERT_FROM_OTHER_STRING __mbsrtowcs
183 # define _itoa(Val, Buf, Base, Case) _itowa (Val, Buf, Base, Case)
184 # define _itoa_word(Val, Buf, Base, Case) _itowa_word (Val, Buf, Base, Case)
190 pad_func (FILE *s
, CHAR_T padchar
, int width
, int done
)
195 #ifndef COMPILE_WPRINTF
196 written
= _IO_padn (s
, padchar
, width
);
198 written
= _IO_wpadn (s
, padchar
, width
);
200 if (__glibc_unlikely (written
!= width
))
202 return done_add_func (width
, done
);
207 #define PAD(Padchar) \
210 done = pad_func (s, (Padchar), width, done); \
216 #include "_i18n_number.h"
218 /* Include the shared code for parsing the format string. */
219 #include "printf-parse.h"
222 #define outchar(Ch) \
225 const INT_T outc = (Ch); \
226 if (PUTC (outc, s) == EOF || done == INT_MAX) \
236 outstring_func (FILE *s
, const UCHAR_T
*string
, size_t length
, int done
)
238 assert ((size_t) done
<= (size_t) INT_MAX
);
239 if ((size_t) PUT (s
, string
, length
) != (size_t) (length
))
241 return done_add_func (length
, done
);
244 #define outstring(String, Len) \
247 const void *string_ = (String); \
248 done = outstring_func (s, string_, (Len), done); \
254 /* Write the string SRC to S. If PREC is non-negative, write at most
255 PREC bytes. If LEFT is true, perform left justification. */
257 outstring_converted_wide_string (FILE *s
, const OTHER_CHAR_T
*src
, int prec
,
258 int width
, bool left
, int done
)
260 /* Use a small buffer to combine processing of multiple characters.
261 CONVERT_FROM_OTHER_STRING expects the buffer size in (wide)
262 characters, and buf_length counts that. */
263 enum { buf_length
= 256 / sizeof (CHAR_T
) };
264 CHAR_T buf
[buf_length
];
265 _Static_assert (sizeof (buf
) > MB_LEN_MAX
,
266 "buffer is large enough for a single multi-byte character");
268 /* Add the initial padding if needed. */
269 if (width
> 0 && !left
)
271 /* Make a first pass to find the output width, so that we can
272 add the required padding. */
273 mbstate_t mbstate
= { 0 };
274 const OTHER_CHAR_T
*src_copy
= src
;
275 size_t total_written
;
277 total_written
= CONVERT_FROM_OTHER_STRING
278 (NULL
, &src_copy
, 0, &mbstate
);
281 /* The source might not be null-terminated. Enforce the
282 limit manually, based on the output length. */
285 while (limit
> 0 && src_copy
!= NULL
)
287 size_t write_limit
= buf_length
;
288 if (write_limit
> limit
)
290 size_t written
= CONVERT_FROM_OTHER_STRING
291 (buf
, &src_copy
, write_limit
, &mbstate
);
292 if (written
== (size_t) -1)
296 total_written
+= written
;
301 /* Output initial padding. */
302 if (total_written
< width
)
304 done
= pad_func (s
, L_(' '), width
- total_written
, done
);
310 /* Convert the input string, piece by piece. */
311 size_t total_written
= 0;
313 mbstate_t mbstate
= { 0 };
314 /* If prec is negative, remaining is not decremented, otherwise,
315 it serves as the write limit. */
316 size_t remaining
= -1;
319 while (remaining
> 0 && src
!= NULL
)
321 size_t write_limit
= buf_length
;
322 if (remaining
< write_limit
)
323 write_limit
= remaining
;
324 size_t written
= CONVERT_FROM_OTHER_STRING
325 (buf
, &src
, write_limit
, &mbstate
);
326 if (written
== (size_t) -1)
330 done
= outstring_func (s
, (const UCHAR_T
*) buf
, written
, done
);
333 total_written
+= written
;
335 remaining
-= written
;
339 /* Add final padding. */
340 if (width
> 0 && left
&& total_written
< width
)
341 return pad_func (s
, L_(' '), width
- total_written
, done
);
345 /* Calls __printf_fp or __printf_fphex based on the value of the
346 format specifier INFO->spec. */
348 __printf_fp_spec (FILE *fp
, const struct printf_info
*info
,
349 const void *const *args
)
351 if (info
->spec
== 'a' || info
->spec
== 'A')
352 return __printf_fphex (fp
, info
, args
);
354 return __printf_fp (fp
, info
, args
);
357 /* For handling long_double and longlong we use the same flag. If
358 `long' and `long long' are effectively the same type define it to
360 #if LONG_MAX == LONG_LONG_MAX
361 # define is_longlong 0
363 # define is_longlong is_long_double
366 /* If `long' and `int' is effectively the same type we don't have to
367 handle `long separately. */
368 #if INT_MAX == LONG_MAX
369 # define is_long_num 0
371 # define is_long_num is_long
375 /* Global constants. */
376 static const CHAR_T null
[] = L_("(null)");
378 /* Size of the work_buffer variable (in characters, not bytes. */
379 enum { WORK_BUFFER_SIZE
= 1000 / sizeof (CHAR_T
) };
381 /* This table maps a character into a number representing a class. In
382 each step there is a destination label for each class. */
383 static const uint8_t jump_table
[] =
385 /* ' ' */ 1, 0, 0, /* '#' */ 4,
386 0, /* '%' */ 14, 0, /* '\''*/ 6,
387 0, 0, /* '*' */ 7, /* '+' */ 2,
388 0, /* '-' */ 3, /* '.' */ 9, 0,
389 /* '0' */ 5, /* '1' */ 8, /* '2' */ 8, /* '3' */ 8,
390 /* '4' */ 8, /* '5' */ 8, /* '6' */ 8, /* '7' */ 8,
391 /* '8' */ 8, /* '9' */ 8, 0, 0,
393 0, /* 'A' */ 26, /* 'B' */ 30, /* 'C' */ 25,
394 0, /* 'E' */ 19, /* F */ 19, /* 'G' */ 19,
395 0, /* 'I' */ 29, 0, 0,
396 /* 'L' */ 12, 0, 0, 0,
397 0, 0, 0, /* 'S' */ 21,
399 /* 'X' */ 18, 0, /* 'Z' */ 13, 0,
401 0, /* 'a' */ 26, /* 'b' */ 30, /* 'c' */ 20,
402 /* 'd' */ 15, /* 'e' */ 19, /* 'f' */ 19, /* 'g' */ 19,
403 /* 'h' */ 10, /* 'i' */ 15, /* 'j' */ 28, 0,
404 /* 'l' */ 11, /* 'm' */ 24, /* 'n' */ 23, /* 'o' */ 17,
405 /* 'p' */ 22, /* 'q' */ 12, 0, /* 's' */ 21,
406 /* 't' */ 27, /* 'u' */ 16, 0, 0,
407 /* 'x' */ 18, 0, /* 'z' */ 13
410 #define NOT_IN_JUMP_RANGE(Ch) ((Ch) < L_(' ') || (Ch) > L_('z'))
411 #define CHAR_CLASS(Ch) (jump_table[(INT_T) (Ch) - L_(' ')])
412 #define LABEL(Name) do_##Name
414 /* 'int' is enough and it saves some space on 64 bit systems. */
415 # define JUMP_TABLE_TYPE const int
416 # define JUMP_TABLE_BASE_LABEL do_form_unknown
417 # define REF(Name) &&do_##Name - &&JUMP_TABLE_BASE_LABEL
418 # define JUMP(ChExpr, table) \
424 offset = NOT_IN_JUMP_RANGE (spec) ? REF (form_unknown) \
425 : table[CHAR_CLASS (spec)]; \
426 ptr = &&JUMP_TABLE_BASE_LABEL + offset; \
431 # define JUMP_TABLE_TYPE const void *const
432 # define REF(Name) &&do_##Name
433 # define JUMP(ChExpr, table) \
438 ptr = NOT_IN_JUMP_RANGE (spec) ? REF (form_unknown) \
439 : table[CHAR_CLASS (spec)]; \
445 #define STEP0_3_TABLE \
446 /* Step 0: at the beginning. */ \
447 static JUMP_TABLE_TYPE step0_jumps[31] = \
449 REF (form_unknown), \
450 REF (flag_space), /* for ' ' */ \
451 REF (flag_plus), /* for '+' */ \
452 REF (flag_minus), /* for '-' */ \
453 REF (flag_hash), /* for '<hash>' */ \
454 REF (flag_zero), /* for '0' */ \
455 REF (flag_quote), /* for '\'' */ \
456 REF (width_asterics), /* for '*' */ \
457 REF (width), /* for '1'...'9' */ \
458 REF (precision), /* for '.' */ \
459 REF (mod_half), /* for 'h' */ \
460 REF (mod_long), /* for 'l' */ \
461 REF (mod_longlong), /* for 'L', 'q' */ \
462 REF (mod_size_t), /* for 'z', 'Z' */ \
463 REF (form_percent), /* for '%' */ \
464 REF (form_integer), /* for 'd', 'i' */ \
465 REF (form_unsigned), /* for 'u' */ \
466 REF (form_octal), /* for 'o' */ \
467 REF (form_hexa), /* for 'X', 'x' */ \
468 REF (form_float), /* for 'E', 'e', 'F', 'f', 'G', 'g' */ \
469 REF (form_character), /* for 'c' */ \
470 REF (form_string), /* for 's', 'S' */ \
471 REF (form_pointer), /* for 'p' */ \
472 REF (form_number), /* for 'n' */ \
473 REF (form_strerror), /* for 'm' */ \
474 REF (form_wcharacter), /* for 'C' */ \
475 REF (form_floathex), /* for 'A', 'a' */ \
476 REF (mod_ptrdiff_t), /* for 't' */ \
477 REF (mod_intmax_t), /* for 'j' */ \
478 REF (flag_i18n), /* for 'I' */ \
479 REF (form_binary), /* for 'B', 'b' */ \
481 /* Step 1: after processing width. */ \
482 static JUMP_TABLE_TYPE step1_jumps[31] = \
484 REF (form_unknown), \
485 REF (form_unknown), /* for ' ' */ \
486 REF (form_unknown), /* for '+' */ \
487 REF (form_unknown), /* for '-' */ \
488 REF (form_unknown), /* for '<hash>' */ \
489 REF (form_unknown), /* for '0' */ \
490 REF (form_unknown), /* for '\'' */ \
491 REF (form_unknown), /* for '*' */ \
492 REF (form_unknown), /* for '1'...'9' */ \
493 REF (precision), /* for '.' */ \
494 REF (mod_half), /* for 'h' */ \
495 REF (mod_long), /* for 'l' */ \
496 REF (mod_longlong), /* for 'L', 'q' */ \
497 REF (mod_size_t), /* for 'z', 'Z' */ \
498 REF (form_percent), /* for '%' */ \
499 REF (form_integer), /* for 'd', 'i' */ \
500 REF (form_unsigned), /* for 'u' */ \
501 REF (form_octal), /* for 'o' */ \
502 REF (form_hexa), /* for 'X', 'x' */ \
503 REF (form_float), /* for 'E', 'e', 'F', 'f', 'G', 'g' */ \
504 REF (form_character), /* for 'c' */ \
505 REF (form_string), /* for 's', 'S' */ \
506 REF (form_pointer), /* for 'p' */ \
507 REF (form_number), /* for 'n' */ \
508 REF (form_strerror), /* for 'm' */ \
509 REF (form_wcharacter), /* for 'C' */ \
510 REF (form_floathex), /* for 'A', 'a' */ \
511 REF (mod_ptrdiff_t), /* for 't' */ \
512 REF (mod_intmax_t), /* for 'j' */ \
513 REF (form_unknown), /* for 'I' */ \
514 REF (form_binary), /* for 'B', 'b' */ \
516 /* Step 2: after processing precision. */ \
517 static JUMP_TABLE_TYPE step2_jumps[31] = \
519 REF (form_unknown), \
520 REF (form_unknown), /* for ' ' */ \
521 REF (form_unknown), /* for '+' */ \
522 REF (form_unknown), /* for '-' */ \
523 REF (form_unknown), /* for '<hash>' */ \
524 REF (form_unknown), /* for '0' */ \
525 REF (form_unknown), /* for '\'' */ \
526 REF (form_unknown), /* for '*' */ \
527 REF (form_unknown), /* for '1'...'9' */ \
528 REF (form_unknown), /* for '.' */ \
529 REF (mod_half), /* for 'h' */ \
530 REF (mod_long), /* for 'l' */ \
531 REF (mod_longlong), /* for 'L', 'q' */ \
532 REF (mod_size_t), /* for 'z', 'Z' */ \
533 REF (form_percent), /* for '%' */ \
534 REF (form_integer), /* for 'd', 'i' */ \
535 REF (form_unsigned), /* for 'u' */ \
536 REF (form_octal), /* for 'o' */ \
537 REF (form_hexa), /* for 'X', 'x' */ \
538 REF (form_float), /* for 'E', 'e', 'F', 'f', 'G', 'g' */ \
539 REF (form_character), /* for 'c' */ \
540 REF (form_string), /* for 's', 'S' */ \
541 REF (form_pointer), /* for 'p' */ \
542 REF (form_number), /* for 'n' */ \
543 REF (form_strerror), /* for 'm' */ \
544 REF (form_wcharacter), /* for 'C' */ \
545 REF (form_floathex), /* for 'A', 'a' */ \
546 REF (mod_ptrdiff_t), /* for 't' */ \
547 REF (mod_intmax_t), /* for 'j' */ \
548 REF (form_unknown), /* for 'I' */ \
549 REF (form_binary), /* for 'B', 'b' */ \
551 /* Step 3a: after processing first 'h' modifier. */ \
552 static JUMP_TABLE_TYPE step3a_jumps[31] = \
554 REF (form_unknown), \
555 REF (form_unknown), /* for ' ' */ \
556 REF (form_unknown), /* for '+' */ \
557 REF (form_unknown), /* for '-' */ \
558 REF (form_unknown), /* for '<hash>' */ \
559 REF (form_unknown), /* for '0' */ \
560 REF (form_unknown), /* for '\'' */ \
561 REF (form_unknown), /* for '*' */ \
562 REF (form_unknown), /* for '1'...'9' */ \
563 REF (form_unknown), /* for '.' */ \
564 REF (mod_halfhalf), /* for 'h' */ \
565 REF (form_unknown), /* for 'l' */ \
566 REF (form_unknown), /* for 'L', 'q' */ \
567 REF (form_unknown), /* for 'z', 'Z' */ \
568 REF (form_percent), /* for '%' */ \
569 REF (form_integer), /* for 'd', 'i' */ \
570 REF (form_unsigned), /* for 'u' */ \
571 REF (form_octal), /* for 'o' */ \
572 REF (form_hexa), /* for 'X', 'x' */ \
573 REF (form_unknown), /* for 'E', 'e', 'F', 'f', 'G', 'g' */ \
574 REF (form_unknown), /* for 'c' */ \
575 REF (form_unknown), /* for 's', 'S' */ \
576 REF (form_unknown), /* for 'p' */ \
577 REF (form_number), /* for 'n' */ \
578 REF (form_unknown), /* for 'm' */ \
579 REF (form_unknown), /* for 'C' */ \
580 REF (form_unknown), /* for 'A', 'a' */ \
581 REF (form_unknown), /* for 't' */ \
582 REF (form_unknown), /* for 'j' */ \
583 REF (form_unknown), /* for 'I' */ \
584 REF (form_binary), /* for 'B', 'b' */ \
586 /* Step 3b: after processing first 'l' modifier. */ \
587 static JUMP_TABLE_TYPE step3b_jumps[31] = \
589 REF (form_unknown), \
590 REF (form_unknown), /* for ' ' */ \
591 REF (form_unknown), /* for '+' */ \
592 REF (form_unknown), /* for '-' */ \
593 REF (form_unknown), /* for '<hash>' */ \
594 REF (form_unknown), /* for '0' */ \
595 REF (form_unknown), /* for '\'' */ \
596 REF (form_unknown), /* for '*' */ \
597 REF (form_unknown), /* for '1'...'9' */ \
598 REF (form_unknown), /* for '.' */ \
599 REF (form_unknown), /* for 'h' */ \
600 REF (mod_longlong), /* for 'l' */ \
601 REF (form_unknown), /* for 'L', 'q' */ \
602 REF (form_unknown), /* for 'z', 'Z' */ \
603 REF (form_percent), /* for '%' */ \
604 REF (form_integer), /* for 'd', 'i' */ \
605 REF (form_unsigned), /* for 'u' */ \
606 REF (form_octal), /* for 'o' */ \
607 REF (form_hexa), /* for 'X', 'x' */ \
608 REF (form_float), /* for 'E', 'e', 'F', 'f', 'G', 'g' */ \
609 REF (form_character), /* for 'c' */ \
610 REF (form_string), /* for 's', 'S' */ \
611 REF (form_pointer), /* for 'p' */ \
612 REF (form_number), /* for 'n' */ \
613 REF (form_strerror), /* for 'm' */ \
614 REF (form_wcharacter), /* for 'C' */ \
615 REF (form_floathex), /* for 'A', 'a' */ \
616 REF (form_unknown), /* for 't' */ \
617 REF (form_unknown), /* for 'j' */ \
618 REF (form_unknown), /* for 'I' */ \
619 REF (form_binary), /* for 'B', 'b' */ \
622 #define STEP4_TABLE \
623 /* Step 4: processing format specifier. */ \
624 static JUMP_TABLE_TYPE step4_jumps[31] = \
626 REF (form_unknown), \
627 REF (form_unknown), /* for ' ' */ \
628 REF (form_unknown), /* for '+' */ \
629 REF (form_unknown), /* for '-' */ \
630 REF (form_unknown), /* for '<hash>' */ \
631 REF (form_unknown), /* for '0' */ \
632 REF (form_unknown), /* for '\'' */ \
633 REF (form_unknown), /* for '*' */ \
634 REF (form_unknown), /* for '1'...'9' */ \
635 REF (form_unknown), /* for '.' */ \
636 REF (form_unknown), /* for 'h' */ \
637 REF (form_unknown), /* for 'l' */ \
638 REF (form_unknown), /* for 'L', 'q' */ \
639 REF (form_unknown), /* for 'z', 'Z' */ \
640 REF (form_percent), /* for '%' */ \
641 REF (form_integer), /* for 'd', 'i' */ \
642 REF (form_unsigned), /* for 'u' */ \
643 REF (form_octal), /* for 'o' */ \
644 REF (form_hexa), /* for 'X', 'x' */ \
645 REF (form_float), /* for 'E', 'e', 'F', 'f', 'G', 'g' */ \
646 REF (form_character), /* for 'c' */ \
647 REF (form_string), /* for 's', 'S' */ \
648 REF (form_pointer), /* for 'p' */ \
649 REF (form_number), /* for 'n' */ \
650 REF (form_strerror), /* for 'm' */ \
651 REF (form_wcharacter), /* for 'C' */ \
652 REF (form_floathex), /* for 'A', 'a' */ \
653 REF (form_unknown), /* for 't' */ \
654 REF (form_unknown), /* for 'j' */ \
655 REF (form_unknown), /* for 'I' */ \
656 REF (form_binary), /* for 'B', 'b' */ \
659 /* Before invoking this macro, process_arg_int etc. macros have to be
660 defined to extract one argument of the appropriate type. */
661 #define process_arg() \
662 /* Start real work. We know about all flags and modifiers and \
663 now process the wanted format specifier. */ \
664 LABEL (form_percent): \
665 /* Write a literal "%". */ \
669 LABEL (form_integer): \
670 /* Signed decimal integer. */ \
675 long long int signed_number = process_arg_long_long_int (); \
676 is_negative = signed_number < 0; \
677 number.longlong = is_negative ? (- signed_number) : signed_number; \
679 goto LABEL (longlong_number); \
683 long int signed_number; \
685 signed_number = process_arg_long_int (); \
687 signed_number = (signed char) process_arg_unsigned_int (); \
688 else if (!is_short) \
689 signed_number = process_arg_int (); \
691 signed_number = (short int) process_arg_unsigned_int (); \
693 is_negative = signed_number < 0; \
694 number.word = is_negative ? (- signed_number) : signed_number; \
696 goto LABEL (number); \
700 LABEL (form_unsigned): \
701 /* Unsigned decimal integer. */ \
703 goto LABEL (unsigned_number); \
706 LABEL (form_octal): \
707 /* Unsigned octal integer. */ \
709 goto LABEL (unsigned_number); \
713 /* Unsigned hexadecimal integer. */ \
715 goto LABEL (unsigned_number); \
718 LABEL (form_binary): \
719 /* Unsigned binary integer. */ \
721 goto LABEL (unsigned_number); \
724 LABEL (unsigned_number): /* Unsigned number of base BASE. */ \
726 /* ISO specifies the `+' and ` ' flags only for signed \
734 number.longlong = process_arg_unsigned_long_long_int (); \
736 LABEL (longlong_number): \
738 /* Supply a default precision if none was given. */ \
741 /* We have to take care for the '0' flag. If a precision \
742 is given it must be ignored. */ \
745 /* If the precision is 0 and the number is 0 nothing has to \
746 be written for the number, except for the 'o' format in \
748 if (prec == 0 && number.longlong == 0) \
751 if (base == 8 && alt) \
752 *--string = L_('0'); \
756 /* Put the number in WORK. */ \
757 string = _itoa (number.longlong, workend, base, \
759 if (group && grouping) \
760 string = group_number (work_buffer, string, workend, \
761 grouping, thousands_sep); \
762 if (use_outdigits && base == 10) \
763 string = _i18n_number_rewrite (string, workend, workend); \
765 /* Simplify further test for num != 0. */ \
766 number.word = number.longlong != 0; \
771 number.word = process_arg_unsigned_long_int (); \
773 number.word = (unsigned char) process_arg_unsigned_int (); \
774 else if (!is_short) \
775 number.word = process_arg_unsigned_int (); \
777 number.word = (unsigned short int) process_arg_unsigned_int (); \
781 /* Supply a default precision if none was given. */ \
784 /* We have to take care for the '0' flag. If a precision \
785 is given it must be ignored. */ \
788 /* If the precision is 0 and the number is 0 nothing has to \
789 be written for the number, except for the 'o' format in \
791 if (prec == 0 && number.word == 0) \
794 if (base == 8 && alt) \
795 *--string = L_('0'); \
799 /* Put the number in WORK. */ \
800 string = _itoa_word (number.word, workend, base, \
802 if (group && grouping) \
803 string = group_number (work_buffer, string, workend, \
804 grouping, thousands_sep); \
805 if (use_outdigits && base == 10) \
806 string = _i18n_number_rewrite (string, workend, workend); \
810 if (prec <= workend - string && number.word != 0 && alt && base == 8) \
811 /* Add octal marker. */ \
812 *--string = L_('0'); \
814 prec = MAX (0, prec - (workend - string)); \
818 width -= workend - string + prec; \
820 if (number.word != 0 && alt && (base == 16 || base == 2)) \
821 /* Account for 0X, 0x, 0B or 0b hex or binary marker. */ \
824 if (is_negative || showsign || space) \
827 if (pad == L_(' ')) \
840 if (number.word != 0 && alt && (base == 16 || base == 2)) \
849 outstring (string, workend - string); \
871 if (number.word != 0 && alt && (base == 16 || base == 2)) \
878 width -= workend - string + prec; \
888 outstring (string, workend - string); \
894 LABEL (form_pointer): \
895 /* Generic pointer. */ \
897 const void *ptr = process_arg_pointer (); \
900 /* If the pointer is not NULL, write it as a %#x spec. */ \
902 number.word = (unsigned long int) ptr; \
907 goto LABEL (number); \
911 /* Write "(nil)" for a nil pointer. */ \
912 string = (CHAR_T *) L_("(nil)"); \
913 /* Make sure the full string "(nil)" is printed. */ \
916 /* This is a wide string iff compiling wprintf. */ \
917 is_long = sizeof (CHAR_T) > 1; \
918 goto LABEL (print_string); \
923 LABEL (form_number): \
924 if ((mode_flags & PRINTF_FORTIFY) != 0) \
926 if (! readonly_format) \
928 extern int __readonly_area (const void *, size_t) \
931 = __readonly_area (format, ((STR_LEN (format) + 1) \
932 * sizeof (CHAR_T))); \
934 if (readonly_format < 0) \
935 __libc_fatal ("*** %n in writable segment detected ***\n"); \
937 /* Answer the count of characters written. */ \
938 void *ptrptr = process_arg_pointer (); \
940 *(long long int *) ptrptr = done; \
941 else if (is_long_num) \
942 *(long int *) ptrptr = done; \
944 *(char *) ptrptr = done; \
945 else if (!is_short) \
946 *(int *) ptrptr = done; \
948 *(short int *) ptrptr = done; \
951 LABEL (form_strerror): \
952 /* Print description of error ERRNO. */ \
954 string = (CHAR_T *) __get_errname (save_errno); \
956 string = (CHAR_T *) __strerror_r (save_errno, (char *) work_buffer, \
957 WORK_BUFFER_SIZE * sizeof (CHAR_T));\
958 if (string == NULL) \
960 /* Print as a decimal number. */ \
962 is_negative = save_errno < 0; \
963 number.word = save_errno; \
965 number.word = -number.word; \
966 goto LABEL (number); \
970 is_long = 0; /* This is no wide-char string. */ \
971 goto LABEL (print_string); \
974 #ifdef COMPILE_WPRINTF
975 # define process_string_arg() \
976 LABEL (form_character): \
979 goto LABEL (form_wcharacter); \
980 --width; /* Account for the character itself. */ \
983 outchar (__btowc ((unsigned char) process_arg_int ())); /* Promoted. */ \
988 LABEL (form_wcharacter): \
990 /* Wide character. */ \
994 outchar (process_arg_wchar_t ()); \
1000 LABEL (form_string): \
1004 /* The string argument could in fact be `char *' or `wchar_t *'. \
1005 But this should not make a difference here. */ \
1006 string = (CHAR_T *) process_arg_wstring (); \
1008 /* Entry point for printing other strings. */ \
1009 LABEL (print_string): \
1011 if (string == NULL) \
1013 /* Write "(null)" if there's space. */ \
1014 if (prec == -1 || prec >= (int) array_length (null) - 1) \
1016 string = (CHAR_T *) null; \
1017 len = array_length (null) - 1; \
1021 string = (CHAR_T *) L""; \
1025 else if (!is_long && spec != L_('S')) \
1027 done = outstring_converted_wide_string \
1028 (s, (const char *) string, prec, width, left, done); \
1031 /* The padding has already been written. */ \
1037 /* Search for the end of the string, but don't search past \
1038 the length specified by the precision. */ \
1039 len = __wcsnlen (string, prec); \
1041 len = __wcslen (string); \
1044 if ((width -= len) < 0) \
1046 outstring (string, len); \
1052 outstring (string, len); \
1058 # define process_string_arg() \
1059 LABEL (form_character): \
1062 goto LABEL (form_wcharacter); \
1063 --width; /* Account for the character itself. */ \
1066 outchar ((unsigned char) process_arg_int ()); /* Promoted. */ \
1071 LABEL (form_wcharacter): \
1073 /* Wide character. */ \
1074 char buf[MB_LEN_MAX]; \
1075 mbstate_t mbstate; \
1078 memset (&mbstate, '\0', sizeof (mbstate_t)); \
1079 len = __wcrtomb (buf, process_arg_wchar_t (), &mbstate); \
1080 if (len == (size_t) -1) \
1082 /* Something went wrong during the conversion. Bail out. */ \
1089 outstring (buf, len); \
1095 LABEL (form_string): \
1099 /* The string argument could in fact be `char *' or `wchar_t *'. \
1100 But this should not make a difference here. */ \
1101 string = (char *) process_arg_string (); \
1103 /* Entry point for printing other strings. */ \
1104 LABEL (print_string): \
1106 if (string == NULL) \
1108 /* Write "(null)" if there's space. */ \
1109 if (prec == -1 || prec >= (int) sizeof (null) - 1) \
1111 string = (char *) null; \
1112 len = sizeof (null) - 1; \
1116 string = (char *) ""; \
1120 else if (!is_long && spec != L_('S')) \
1123 /* Search for the end of the string, but don't search past \
1124 the length (in bytes) specified by the precision. */ \
1125 len = __strnlen (string, prec); \
1127 len = strlen (string); \
1131 done = outstring_converted_wide_string \
1132 (s, (const wchar_t *) string, prec, width, left, done); \
1135 /* The padding has already been written. */ \
1139 if ((width -= len) < 0) \
1141 outstring (string, len); \
1147 outstring (string, len); \
1154 /* Helper function to provide temporary buffering for unbuffered streams. */
1155 static int buffered_vfprintf (FILE *stream
, const CHAR_T
*fmt
, va_list,
1157 __THROW
__attribute__ ((noinline
));
1159 /* Handle positional format specifiers. */
1160 static int printf_positional (FILE *s
,
1161 const CHAR_T
*format
, int readonly_format
,
1162 va_list ap
, va_list *ap_savep
, int done
,
1163 int nspecs_done
, const UCHAR_T
*lead_str_end
,
1164 CHAR_T
*work_buffer
, int save_errno
,
1165 const char *grouping
,
1166 THOUSANDS_SEP_T thousands_sep
,
1167 unsigned int mode_flags
);
1169 /* Handle unknown format specifier. */
1170 static int printf_unknown (FILE *, const struct printf_info
*,
1171 const void *const *) __THROW
;
1173 /* Group digits of number string. */
1174 static CHAR_T
*group_number (CHAR_T
*, CHAR_T
*, CHAR_T
*, const char *,
1177 /* The function itself. */
1179 vfprintf (FILE *s
, const CHAR_T
*format
, va_list ap
, unsigned int mode_flags
)
1181 /* The character used as thousands separator. */
1182 THOUSANDS_SEP_T thousands_sep
= 0;
1184 /* The string describing the size of groups of digits. */
1185 const char *grouping
;
1187 /* Place to accumulate the result. */
1190 /* Current character in format string. */
1193 /* End of leading constant string. */
1194 const UCHAR_T
*lead_str_end
;
1196 /* Points to next format specifier. */
1197 const UCHAR_T
*end_of_spec
;
1199 /* Buffer intermediate results. */
1200 CHAR_T work_buffer
[WORK_BUFFER_SIZE
];
1203 /* We have to save the original argument pointer. */
1206 /* Count number of specifiers we already processed. */
1209 /* For the %m format we may need the current `errno' value. */
1210 int save_errno
= errno
;
1212 /* 1 if format is in read-only memory, -1 if it is in writable memory,
1214 int readonly_format
= 0;
1216 /* Orient the stream. */
1221 /* Sanity check of arguments. */
1222 ARGCHECK (s
, format
);
1225 /* Check for correct orientation. */
1226 if (_IO_vtable_offset (s
) == 0
1227 && _IO_fwide (s
, sizeof (CHAR_T
) == 1 ? -1 : 1)
1228 != (sizeof (CHAR_T
) == 1 ? -1 : 1))
1229 /* The stream is already oriented otherwise. */
1233 if (UNBUFFERED_P (s
))
1234 /* Use a helper function which will allocate a local temporary buffer
1235 for the stream and then call us again. */
1236 return buffered_vfprintf (s
, format
, ap
, mode_flags
);
1238 /* Initialize local variables. */
1240 grouping
= (const char *) -1;
1242 /* This macro will be available soon in gcc's <stdarg.h>. We need it
1243 since on some systems `va_list' is not an integral type. */
1244 __va_copy (ap_save
, ap
);
1250 #ifdef COMPILE_WPRINTF
1251 /* Find the first format specifier. */
1252 f
= lead_str_end
= __find_specwc ((const UCHAR_T
*) format
);
1254 /* Find the first format specifier. */
1255 f
= lead_str_end
= __find_specmb ((const UCHAR_T
*) format
);
1259 _IO_cleanup_region_start ((void (*) (void *)) &_IO_funlockfile
, s
);
1262 /* Write the literal text before the first format. */
1263 outstring ((const UCHAR_T
*) format
,
1264 lead_str_end
- (const UCHAR_T
*) format
);
1266 /* If we only have to print a simple string, return now. */
1270 /* Use the slow path in case any printf handler is registered. */
1271 if (__glibc_unlikely (__printf_function_table
!= NULL
1272 || __printf_modifier_table
!= NULL
1273 || __printf_va_arg_table
!= NULL
))
1276 /* Process whole format string. */
1282 int is_negative
; /* Flag for negative number. */
1285 unsigned long long int longlong
;
1286 unsigned long int word
;
1289 union printf_arg the_arg
;
1290 CHAR_T
*string
; /* Pointer to argument string. */
1291 int alt
= 0; /* Alternate format. */
1292 int space
= 0; /* Use space prefix if no sign is needed. */
1293 int left
= 0; /* Left-justify output. */
1294 int showsign
= 0; /* Always begin with plus or minus sign. */
1295 int group
= 0; /* Print numbers according grouping rules. */
1296 /* Argument is long double/long long int. Only used if
1297 double/long double or long int/long long int are distinct. */
1298 int is_long_double
__attribute__ ((unused
)) = 0;
1299 int is_short
= 0; /* Argument is short int. */
1300 int is_long
= 0; /* Argument is long int. */
1301 int is_char
= 0; /* Argument is promoted (unsigned) char. */
1302 int width
= 0; /* Width of output; 0 means none specified. */
1303 int prec
= -1; /* Precision of output; -1 means none specified. */
1304 /* This flag is set by the 'I' modifier and selects the use of the
1305 `outdigits' as determined by the current locale. */
1306 int use_outdigits
= 0;
1307 UCHAR_T pad
= L_(' ');/* Padding character. */
1310 workend
= work_buffer
+ WORK_BUFFER_SIZE
;
1312 /* Get current character in format string. */
1313 JUMP (*++f
, step0_jumps
);
1318 JUMP (*++f
, step0_jumps
);
1323 JUMP (*++f
, step0_jumps
);
1329 JUMP (*++f
, step0_jumps
);
1334 JUMP (*++f
, step0_jumps
);
1340 JUMP (*++f
, step0_jumps
);
1342 /* The '\'' flag. */
1346 if (grouping
== (const char *) -1)
1348 #ifdef COMPILE_WPRINTF
1349 thousands_sep
= _NL_CURRENT_WORD (LC_NUMERIC
,
1350 _NL_NUMERIC_THOUSANDS_SEP_WC
);
1352 thousands_sep
= _NL_CURRENT (LC_NUMERIC
, THOUSANDS_SEP
);
1355 grouping
= _NL_CURRENT (LC_NUMERIC
, GROUPING
);
1356 if (*grouping
== '\0' || *grouping
== CHAR_MAX
1357 #ifdef COMPILE_WPRINTF
1358 || thousands_sep
== L
'\0'
1360 || *thousands_sep
== '\0'
1365 JUMP (*++f
, step0_jumps
);
1369 JUMP (*++f
, step0_jumps
);
1371 /* Get width from argument. */
1372 LABEL (width_asterics
):
1374 const UCHAR_T
*tmp
; /* Temporary value. */
1379 int pos
= read_int (&tmp
);
1383 __set_errno (EOVERFLOW
);
1388 if (pos
&& *tmp
== L_('$'))
1389 /* The width comes from a positional parameter. */
1392 width
= va_arg (ap
, int);
1394 /* Negative width means left justified. */
1402 JUMP (*f
, step1_jumps
);
1404 /* Given width in format string. */
1406 width
= read_int (&f
);
1408 if (__glibc_unlikely (width
== -1))
1410 __set_errno (EOVERFLOW
);
1416 /* Oh, oh. The argument comes from a positional parameter. */
1418 JUMP (*f
, step1_jumps
);
1424 const UCHAR_T
*tmp
; /* Temporary value. */
1429 int pos
= read_int (&tmp
);
1433 __set_errno (EOVERFLOW
);
1438 if (pos
&& *tmp
== L_('$'))
1439 /* The precision comes from a positional parameter. */
1442 prec
= va_arg (ap
, int);
1444 /* If the precision is negative the precision is omitted. */
1448 else if (ISDIGIT (*f
))
1450 prec
= read_int (&f
);
1452 /* The precision was specified in this case as an extremely
1453 large positive value. */
1456 __set_errno (EOVERFLOW
);
1463 JUMP (*f
, step2_jumps
);
1465 /* Process 'h' modifier. There might another 'h' following. */
1468 JUMP (*++f
, step3a_jumps
);
1470 /* Process 'hh' modifier. */
1471 LABEL (mod_halfhalf
):
1474 JUMP (*++f
, step4_jumps
);
1476 /* Process 'l' modifier. There might another 'l' following. */
1479 JUMP (*++f
, step3b_jumps
);
1481 /* Process 'L', 'q', or 'll' modifier. No other modifier is
1482 allowed to follow. */
1483 LABEL (mod_longlong
):
1486 JUMP (*++f
, step4_jumps
);
1489 is_long_double
= sizeof (size_t) > sizeof (unsigned long int);
1490 is_long
= sizeof (size_t) > sizeof (unsigned int);
1491 JUMP (*++f
, step4_jumps
);
1493 LABEL (mod_ptrdiff_t
):
1494 is_long_double
= sizeof (ptrdiff_t) > sizeof (unsigned long int);
1495 is_long
= sizeof (ptrdiff_t) > sizeof (unsigned int);
1496 JUMP (*++f
, step4_jumps
);
1498 LABEL (mod_intmax_t
):
1499 is_long_double
= sizeof (intmax_t) > sizeof (unsigned long int);
1500 is_long
= sizeof (intmax_t) > sizeof (unsigned int);
1501 JUMP (*++f
, step4_jumps
);
1503 /* Process current format. */
1506 #define process_arg_int() va_arg (ap, int)
1507 #define process_arg_long_int() va_arg (ap, long int)
1508 #define process_arg_long_long_int() va_arg (ap, long long int)
1509 #define process_arg_pointer() va_arg (ap, void *)
1510 #define process_arg_string() va_arg (ap, const char *)
1511 #define process_arg_unsigned_int() va_arg (ap, unsigned int)
1512 #define process_arg_unsigned_long_int() va_arg (ap, unsigned long int)
1513 #define process_arg_unsigned_long_long_int() va_arg (ap, unsigned long long int)
1514 #define process_arg_wchar_t() va_arg (ap, wchar_t)
1515 #define process_arg_wstring() va_arg (ap, const wchar_t *)
1517 process_string_arg ();
1518 #undef process_arg_int
1519 #undef process_arg_long_int
1520 #undef process_arg_long_long_int
1521 #undef process_arg_pointer
1522 #undef process_arg_string
1523 #undef process_arg_unsigned_int
1524 #undef process_arg_unsigned_long_int
1525 #undef process_arg_unsigned_long_long_int
1526 #undef process_arg_wchar_t
1527 #undef process_arg_wstring
1530 LABEL (form_floathex
):
1532 if (__glibc_unlikely ((mode_flags
& PRINTF_LDBL_IS_DBL
) != 0))
1535 struct printf_info info
=
1540 .is_long_double
= is_long_double
,
1541 .is_short
= is_short
,
1546 .showsign
= showsign
,
1550 .i18n
= use_outdigits
,
1551 .wide
= sizeof (CHAR_T
) != 1,
1555 PARSE_FLOAT_VA_ARG_EXTENDED (info
);
1556 const void *ptr
= &the_arg
;
1558 int function_done
= __printf_fp_spec (s
, &info
, &ptr
);
1559 if (function_done
< 0)
1564 done_add (function_done
);
1568 LABEL (form_unknown
):
1569 if (spec
== L_('\0'))
1571 /* The format string ended before the specifier is complete. */
1572 __set_errno (EINVAL
);
1577 /* If we are in the fast loop force entering the complicated
1582 /* The format is correctly handled. */
1585 /* Look for next format specifier. */
1586 #ifdef COMPILE_WPRINTF
1587 f
= __find_specwc ((end_of_spec
= ++f
));
1589 f
= __find_specmb ((end_of_spec
= ++f
));
1592 /* Write the following constant string. */
1593 outstring (end_of_spec
, f
- end_of_spec
);
1595 while (*f
!= L_('\0'));
1597 /* Unlock stream and return. */
1600 /* Hand off processing for positional parameters. */
1602 done
= printf_positional (s
, format
, readonly_format
, ap
, &ap_save
,
1603 done
, nspecs_done
, lead_str_end
, work_buffer
,
1604 save_errno
, grouping
, thousands_sep
, mode_flags
);
1607 /* Unlock the stream. */
1608 _IO_funlockfile (s
);
1609 _IO_cleanup_region_end (0);
1615 printf_positional (FILE *s
, const CHAR_T
*format
, int readonly_format
,
1616 va_list ap
, va_list *ap_savep
, int done
, int nspecs_done
,
1617 const UCHAR_T
*lead_str_end
,
1618 CHAR_T
*work_buffer
, int save_errno
,
1619 const char *grouping
, THOUSANDS_SEP_T thousands_sep
,
1620 unsigned int mode_flags
)
1622 /* For positional argument handling. */
1623 struct scratch_buffer specsbuf
;
1624 scratch_buffer_init (&specsbuf
);
1625 struct printf_spec
*specs
= specsbuf
.data
;
1626 size_t specs_limit
= specsbuf
.length
/ sizeof (specs
[0]);
1628 /* Used as a backing store for args_value, args_size, args_type
1630 struct scratch_buffer argsbuf
;
1631 scratch_buffer_init (&argsbuf
);
1633 /* Array with information about the needed arguments. This has to
1634 be dynamically extensible. */
1637 /* The number of arguments the format string requests. This will
1638 determine the size of the array needed to store the argument
1642 /* Positional parameters refer to arguments directly. This could
1643 also determine the maximum number of arguments. Track the
1645 size_t max_ref_arg
= 0;
1647 /* Just a counter. */
1650 if (grouping
== (const char *) -1)
1652 #ifdef COMPILE_WPRINTF
1653 thousands_sep
= _NL_CURRENT_WORD (LC_NUMERIC
,
1654 _NL_NUMERIC_THOUSANDS_SEP_WC
);
1656 thousands_sep
= _NL_CURRENT (LC_NUMERIC
, THOUSANDS_SEP
);
1659 grouping
= _NL_CURRENT (LC_NUMERIC
, GROUPING
);
1660 if (*grouping
== '\0' || *grouping
== CHAR_MAX
)
1664 for (const UCHAR_T
*f
= lead_str_end
; *f
!= L_('\0');
1665 f
= specs
[nspecs
++].next_fmt
)
1667 if (nspecs
== specs_limit
)
1669 if (!scratch_buffer_grow_preserve (&specsbuf
))
1674 specs
= specsbuf
.data
;
1675 specs_limit
= specsbuf
.length
/ sizeof (specs
[0]);
1678 /* Parse the format specifier. */
1679 #ifdef COMPILE_WPRINTF
1680 nargs
+= __parse_one_specwc (f
, nargs
, &specs
[nspecs
], &max_ref_arg
);
1682 nargs
+= __parse_one_specmb (f
, nargs
, &specs
[nspecs
], &max_ref_arg
);
1686 /* Determine the number of arguments the format string consumes. */
1687 nargs
= MAX (nargs
, max_ref_arg
);
1689 union printf_arg
*args_value
;
1693 /* Calculate total size needed to represent a single argument
1694 across all three argument-related arrays. */
1695 size_t bytes_per_arg
1696 = sizeof (*args_value
) + sizeof (*args_size
) + sizeof (*args_type
);
1697 if (!scratch_buffer_set_array_size (&argsbuf
, nargs
, bytes_per_arg
))
1702 args_value
= argsbuf
.data
;
1703 /* Set up the remaining two arrays to each point past the end of
1704 the prior array, since space for all three has been allocated
1706 args_size
= &args_value
[nargs
].pa_int
;
1707 args_type
= &args_size
[nargs
];
1708 memset (args_type
, (mode_flags
& PRINTF_FORTIFY
) != 0 ? '\xff' : '\0',
1709 nargs
* sizeof (*args_type
));
1712 /* XXX Could do sanity check here: If any element in ARGS_TYPE is
1713 still zero after this loop, format is invalid. For now we
1714 simply use 0 as the value. */
1716 /* Fill in the types of all the arguments. */
1717 for (cnt
= 0; cnt
< nspecs
; ++cnt
)
1719 /* If the width is determined by an argument this is an int. */
1720 if (specs
[cnt
].width_arg
!= -1)
1721 args_type
[specs
[cnt
].width_arg
] = PA_INT
;
1723 /* If the precision is determined by an argument this is an int. */
1724 if (specs
[cnt
].prec_arg
!= -1)
1725 args_type
[specs
[cnt
].prec_arg
] = PA_INT
;
1727 switch (specs
[cnt
].ndata_args
)
1729 case 0: /* No arguments. */
1731 case 1: /* One argument; we already have the
1733 args_type
[specs
[cnt
].data_arg
] = specs
[cnt
].data_arg_type
;
1734 args_size
[specs
[cnt
].data_arg
] = specs
[cnt
].size
;
1737 /* We have more than one argument for this format spec.
1738 We must call the arginfo function again to determine
1740 (void) (*__printf_arginfo_table
[specs
[cnt
].info
.spec
])
1742 specs
[cnt
].ndata_args
, &args_type
[specs
[cnt
].data_arg
],
1743 &args_size
[specs
[cnt
].data_arg
]);
1748 /* Now we know all the types and the order. Fill in the argument
1750 for (cnt
= 0; cnt
< nargs
; ++cnt
)
1751 switch (args_type
[cnt
])
1753 #define T(tag, mem, type) \
1755 args_value[cnt].mem = va_arg (*ap_savep, type); \
1758 T (PA_WCHAR
, pa_wchar
, wint_t);
1759 case PA_CHAR
: /* Promoted. */
1760 case PA_INT
|PA_FLAG_SHORT
: /* Promoted. */
1761 #if LONG_MAX == INT_MAX
1762 case PA_INT
|PA_FLAG_LONG
:
1764 T (PA_INT
, pa_int
, int);
1765 #if LONG_MAX == LONG_LONG_MAX
1766 case PA_INT
|PA_FLAG_LONG
:
1768 T (PA_INT
|PA_FLAG_LONG_LONG
, pa_long_long_int
, long long int);
1769 #if LONG_MAX != INT_MAX && LONG_MAX != LONG_LONG_MAX
1772 case PA_FLOAT
: /* Promoted. */
1773 T (PA_DOUBLE
, pa_double
, double);
1774 case PA_DOUBLE
|PA_FLAG_LONG_DOUBLE
:
1775 if (__glibc_unlikely ((mode_flags
& PRINTF_LDBL_IS_DBL
) != 0))
1777 args_value
[cnt
].pa_double
= va_arg (*ap_savep
, double);
1778 args_type
[cnt
] &= ~PA_FLAG_LONG_DOUBLE
;
1780 #if __HAVE_FLOAT128_UNLIKE_LDBL
1781 else if ((mode_flags
& PRINTF_LDBL_USES_FLOAT128
) != 0)
1782 args_value
[cnt
].pa_float128
= va_arg (*ap_savep
, _Float128
);
1785 args_value
[cnt
].pa_long_double
= va_arg (*ap_savep
, long double);
1787 case PA_STRING
: /* All pointers are the same */
1788 case PA_WSTRING
: /* All pointers are the same */
1789 T (PA_POINTER
, pa_pointer
, void *);
1792 if ((args_type
[cnt
] & PA_FLAG_PTR
) != 0)
1793 args_value
[cnt
].pa_pointer
= va_arg (*ap_savep
, void *);
1794 else if (__glibc_unlikely (__printf_va_arg_table
!= NULL
)
1795 && __printf_va_arg_table
[args_type
[cnt
] - PA_LAST
] != NULL
)
1797 args_value
[cnt
].pa_user
= alloca (args_size
[cnt
]);
1798 (*__printf_va_arg_table
[args_type
[cnt
] - PA_LAST
])
1799 (args_value
[cnt
].pa_user
, ap_savep
);
1802 memset (&args_value
[cnt
], 0, sizeof (args_value
[cnt
]));
1805 /* Error case. Not all parameters appear in N$ format
1806 strings. We have no way to determine their type. */
1807 assert ((mode_flags
& PRINTF_FORTIFY
) != 0);
1808 __libc_fatal ("*** invalid %N$ use detected ***\n");
1811 /* Now walk through all format specifiers and process them. */
1812 for (; (size_t) nspecs_done
< nspecs
; ++nspecs_done
)
1819 unsigned long long int longlong
;
1820 unsigned long int word
;
1823 CHAR_T
*string
; /* Pointer to argument string. */
1825 /* Fill variables from values in struct. */
1826 int alt
= specs
[nspecs_done
].info
.alt
;
1827 int space
= specs
[nspecs_done
].info
.space
;
1828 int left
= specs
[nspecs_done
].info
.left
;
1829 int showsign
= specs
[nspecs_done
].info
.showsign
;
1830 int group
= specs
[nspecs_done
].info
.group
;
1831 int is_long_double
__attribute__ ((unused
))
1832 = specs
[nspecs_done
].info
.is_long_double
;
1833 int is_short
= specs
[nspecs_done
].info
.is_short
;
1834 int is_char
= specs
[nspecs_done
].info
.is_char
;
1835 int is_long
= specs
[nspecs_done
].info
.is_long
;
1836 int width
= specs
[nspecs_done
].info
.width
;
1837 int prec
= specs
[nspecs_done
].info
.prec
;
1838 int use_outdigits
= specs
[nspecs_done
].info
.i18n
;
1839 char pad
= specs
[nspecs_done
].info
.pad
;
1840 CHAR_T spec
= specs
[nspecs_done
].info
.spec
;
1842 CHAR_T
*workend
= work_buffer
+ WORK_BUFFER_SIZE
;
1844 /* Fill in last information. */
1845 if (specs
[nspecs_done
].width_arg
!= -1)
1847 /* Extract the field width from an argument. */
1848 specs
[nspecs_done
].info
.width
=
1849 args_value
[specs
[nspecs_done
].width_arg
].pa_int
;
1851 if (specs
[nspecs_done
].info
.width
< 0)
1852 /* If the width value is negative left justification is
1853 selected and the value is taken as being positive. */
1855 specs
[nspecs_done
].info
.width
*= -1;
1856 left
= specs
[nspecs_done
].info
.left
= 1;
1858 width
= specs
[nspecs_done
].info
.width
;
1861 if (specs
[nspecs_done
].prec_arg
!= -1)
1863 /* Extract the precision from an argument. */
1864 specs
[nspecs_done
].info
.prec
=
1865 args_value
[specs
[nspecs_done
].prec_arg
].pa_int
;
1867 if (specs
[nspecs_done
].info
.prec
< 0)
1868 /* If the precision is negative the precision is
1870 specs
[nspecs_done
].info
.prec
= -1;
1872 prec
= specs
[nspecs_done
].info
.prec
;
1875 /* Process format specifiers. */
1878 extern printf_function
**__printf_function_table
;
1881 if (spec
<= UCHAR_MAX
1882 && __printf_function_table
!= NULL
1883 && __printf_function_table
[(size_t) spec
] != NULL
)
1885 const void **ptr
= alloca (specs
[nspecs_done
].ndata_args
1886 * sizeof (const void *));
1888 /* Fill in an array of pointers to the argument values. */
1889 for (unsigned int i
= 0; i
< specs
[nspecs_done
].ndata_args
;
1891 ptr
[i
] = &args_value
[specs
[nspecs_done
].data_arg
+ i
];
1893 /* Call the function. */
1894 function_done
= __printf_function_table
[(size_t) spec
]
1895 (s
, &specs
[nspecs_done
].info
, ptr
);
1897 if (function_done
!= -2)
1899 /* If an error occurred we don't have information
1900 about # of chars. */
1901 if (function_done
< 0)
1903 /* Function has set errno. */
1908 done_add (function_done
);
1913 JUMP (spec
, step4_jumps
);
1915 #define process_arg_data args_value[specs[nspecs_done].data_arg]
1916 #define process_arg_int() process_arg_data.pa_int
1917 #define process_arg_long_int() process_arg_data.pa_long_int
1918 #define process_arg_long_long_int() process_arg_data.pa_long_long_int
1919 #define process_arg_pointer() process_arg_data.pa_pointer
1920 #define process_arg_string() process_arg_data.pa_string
1921 #define process_arg_unsigned_int() process_arg_data.pa_u_int
1922 #define process_arg_unsigned_long_int() process_arg_data.pa_u_long_int
1923 #define process_arg_unsigned_long_long_int() process_arg_data.pa_u_long_long_int
1924 #define process_arg_wchar_t() process_arg_data.pa_wchar
1925 #define process_arg_wstring() process_arg_data.pa_wstring
1927 process_string_arg ();
1928 #undef process_arg_data
1929 #undef process_arg_int
1930 #undef process_arg_long_int
1931 #undef process_arg_long_long_int
1932 #undef process_arg_pointer
1933 #undef process_arg_string
1934 #undef process_arg_unsigned_int
1935 #undef process_arg_unsigned_long_int
1936 #undef process_arg_unsigned_long_long_int
1937 #undef process_arg_wchar_t
1938 #undef process_arg_wstring
1941 LABEL (form_floathex
):
1944 = (const void *) &args_value
[specs
[nspecs_done
].data_arg
];
1945 if (__glibc_unlikely ((mode_flags
& PRINTF_LDBL_IS_DBL
) != 0))
1947 specs
[nspecs_done
].data_arg_type
= PA_DOUBLE
;
1948 specs
[nspecs_done
].info
.is_long_double
= 0;
1950 SETUP_FLOAT128_INFO (specs
[nspecs_done
].info
);
1953 = __printf_fp_spec (s
, &specs
[nspecs_done
].info
, &ptr
);
1954 if (function_done
< 0)
1956 /* Error in print handler; up to handler to set errno. */
1960 done_add (function_done
);
1964 LABEL (form_unknown
):
1969 ptr
= alloca (specs
[nspecs_done
].ndata_args
1970 * sizeof (const void *));
1972 /* Fill in an array of pointers to the argument values. */
1973 for (i
= 0; i
< specs
[nspecs_done
].ndata_args
; ++i
)
1974 ptr
[i
] = &args_value
[specs
[nspecs_done
].data_arg
+ i
];
1976 /* Call the function. */
1977 function_done
= printf_unknown (s
, &specs
[nspecs_done
].info
,
1980 /* If an error occurred we don't have information about #
1982 if (function_done
< 0)
1984 /* Function has set errno. */
1989 done_add (function_done
);
1994 /* Write the following constant string. */
1995 outstring (specs
[nspecs_done
].end_of_fmt
,
1996 specs
[nspecs_done
].next_fmt
1997 - specs
[nspecs_done
].end_of_fmt
);
2000 scratch_buffer_free (&argsbuf
);
2001 scratch_buffer_free (&specsbuf
);
2005 /* Handle an unknown format specifier. This prints out a canonicalized
2006 representation of the format spec itself. */
2008 printf_unknown (FILE *s
, const struct printf_info
*info
,
2009 const void *const *args
)
2013 CHAR_T work_buffer
[MAX (sizeof (info
->width
), sizeof (info
->prec
)) * 3];
2014 CHAR_T
*const workend
2015 = &work_buffer
[sizeof (work_buffer
) / sizeof (CHAR_T
)];
2026 else if (info
->space
)
2030 if (info
->pad
== L_('0'))
2035 if (info
->width
!= 0)
2037 w
= _itoa_word (info
->width
, workend
, 10, 0);
2042 if (info
->prec
!= -1)
2045 w
= _itoa_word (info
->prec
, workend
, 10, 0);
2050 if (info
->spec
!= L_('\0'))
2051 outchar (info
->spec
);
2057 /* Group the digits from W to REAR_PTR according to the grouping rules
2058 of the current locale. The interpretation of GROUPING is as in
2059 `struct lconv' from <locale.h>. The grouped number extends from
2060 the returned pointer until REAR_PTR. FRONT_PTR to W is used as a
2063 group_number (CHAR_T
*front_ptr
, CHAR_T
*w
, CHAR_T
*rear_ptr
,
2064 const char *grouping
, THOUSANDS_SEP_T thousands_sep
)
2066 /* Length of the current group. */
2068 #ifndef COMPILE_WPRINTF
2069 /* Length of the separator (in wide mode, the separator is always a
2070 single wide character). */
2071 int tlen
= strlen (thousands_sep
);
2074 /* We treat all negative values like CHAR_MAX. */
2076 if (*grouping
== CHAR_MAX
|| *grouping
<= 0)
2077 /* No grouping should be done. */
2082 /* Copy existing string so that nothing gets overwritten. */
2083 memmove (front_ptr
, w
, (rear_ptr
- w
) * sizeof (CHAR_T
));
2084 CHAR_T
*s
= front_ptr
+ (rear_ptr
- w
);
2088 /* Process all characters in the string. */
2089 while (s
> front_ptr
)
2093 if (--len
== 0 && s
> front_ptr
)
2095 /* A new group begins. */
2096 #ifdef COMPILE_WPRINTF
2098 *--w
= thousands_sep
;
2100 /* Not enough room for the separator. */
2106 *--w
= thousands_sep
[--cnt
];
2109 /* Not enough room for the separator. */
2113 if (*grouping
== CHAR_MAX
2120 /* No further grouping to be done. Copy the rest of the
2123 memmove (w
, front_ptr
, (s
- front_ptr
) * sizeof (CHAR_T
));
2126 else if (*grouping
!= '\0')
2129 /* The previous grouping repeats ad infinitum. */
2136 /* Helper "class" for `fprintf to unbuffered': creates a temporary buffer. */
2139 struct _IO_FILE_plus _f
;
2140 #ifdef COMPILE_WPRINTF
2141 struct _IO_wide_data _wide_data
;
2144 #ifdef _IO_MTSAFE_IO
2150 _IO_helper_overflow (FILE *s
, int c
)
2152 FILE *target
= ((struct helper_file
*) s
)->_put_stream
;
2153 #ifdef COMPILE_WPRINTF
2154 int used
= s
->_wide_data
->_IO_write_ptr
- s
->_wide_data
->_IO_write_base
;
2157 size_t written
= _IO_sputn (target
, s
->_wide_data
->_IO_write_base
, used
);
2158 if (written
== 0 || written
== WEOF
)
2160 __wmemmove (s
->_wide_data
->_IO_write_base
,
2161 s
->_wide_data
->_IO_write_base
+ written
,
2163 s
->_wide_data
->_IO_write_ptr
-= written
;
2166 int used
= s
->_IO_write_ptr
- s
->_IO_write_base
;
2169 size_t written
= _IO_sputn (target
, s
->_IO_write_base
, used
);
2170 if (written
== 0 || written
== EOF
)
2172 memmove (s
->_IO_write_base
, s
->_IO_write_base
+ written
,
2174 s
->_IO_write_ptr
-= written
;
2180 #ifdef COMPILE_WPRINTF
2181 static const struct _IO_jump_t _IO_helper_jumps libio_vtable
=
2184 JUMP_INIT (finish
, _IO_wdefault_finish
),
2185 JUMP_INIT (overflow
, _IO_helper_overflow
),
2186 JUMP_INIT (underflow
, _IO_default_underflow
),
2187 JUMP_INIT (uflow
, _IO_default_uflow
),
2188 JUMP_INIT (pbackfail
, (_IO_pbackfail_t
) _IO_wdefault_pbackfail
),
2189 JUMP_INIT (xsputn
, _IO_wdefault_xsputn
),
2190 JUMP_INIT (xsgetn
, _IO_wdefault_xsgetn
),
2191 JUMP_INIT (seekoff
, _IO_default_seekoff
),
2192 JUMP_INIT (seekpos
, _IO_default_seekpos
),
2193 JUMP_INIT (setbuf
, _IO_default_setbuf
),
2194 JUMP_INIT (sync
, _IO_default_sync
),
2195 JUMP_INIT (doallocate
, _IO_wdefault_doallocate
),
2196 JUMP_INIT (read
, _IO_default_read
),
2197 JUMP_INIT (write
, _IO_default_write
),
2198 JUMP_INIT (seek
, _IO_default_seek
),
2199 JUMP_INIT (close
, _IO_default_close
),
2200 JUMP_INIT (stat
, _IO_default_stat
)
2203 static const struct _IO_jump_t _IO_helper_jumps libio_vtable
=
2206 JUMP_INIT (finish
, _IO_default_finish
),
2207 JUMP_INIT (overflow
, _IO_helper_overflow
),
2208 JUMP_INIT (underflow
, _IO_default_underflow
),
2209 JUMP_INIT (uflow
, _IO_default_uflow
),
2210 JUMP_INIT (pbackfail
, _IO_default_pbackfail
),
2211 JUMP_INIT (xsputn
, _IO_default_xsputn
),
2212 JUMP_INIT (xsgetn
, _IO_default_xsgetn
),
2213 JUMP_INIT (seekoff
, _IO_default_seekoff
),
2214 JUMP_INIT (seekpos
, _IO_default_seekpos
),
2215 JUMP_INIT (setbuf
, _IO_default_setbuf
),
2216 JUMP_INIT (sync
, _IO_default_sync
),
2217 JUMP_INIT (doallocate
, _IO_default_doallocate
),
2218 JUMP_INIT (read
, _IO_default_read
),
2219 JUMP_INIT (write
, _IO_default_write
),
2220 JUMP_INIT (seek
, _IO_default_seek
),
2221 JUMP_INIT (close
, _IO_default_close
),
2222 JUMP_INIT (stat
, _IO_default_stat
)
2227 buffered_vfprintf (FILE *s
, const CHAR_T
*format
, va_list args
,
2228 unsigned int mode_flags
)
2231 struct helper_file helper
;
2232 FILE *hp
= (FILE *) &helper
._f
;
2233 int result
, to_flush
;
2235 /* Orient the stream. */
2240 /* Initialize helper. */
2241 helper
._put_stream
= s
;
2242 #ifdef COMPILE_WPRINTF
2243 hp
->_wide_data
= &helper
._wide_data
;
2244 _IO_wsetp (hp
, buf
, buf
+ sizeof buf
/ sizeof (CHAR_T
));
2247 _IO_setp (hp
, buf
, buf
+ sizeof buf
);
2250 hp
->_flags
= _IO_MAGIC
|_IO_NO_READS
|_IO_USER_LOCK
;
2251 #if _IO_JUMPS_OFFSET
2252 hp
->_vtable_offset
= 0;
2254 #ifdef _IO_MTSAFE_IO
2257 hp
->_flags2
= s
->_flags2
;
2258 _IO_JUMPS (&helper
._f
) = (struct _IO_jump_t
*) &_IO_helper_jumps
;
2260 /* Now print to helper instead. */
2261 result
= vfprintf (hp
, format
, args
, mode_flags
);
2264 __libc_cleanup_region_start (1, (void (*) (void *)) &_IO_funlockfile
, s
);
2267 /* Now flush anything from the helper to the S. */
2268 #ifdef COMPILE_WPRINTF
2269 if ((to_flush
= (hp
->_wide_data
->_IO_write_ptr
2270 - hp
->_wide_data
->_IO_write_base
)) > 0)
2272 if ((int) _IO_sputn (s
, hp
->_wide_data
->_IO_write_base
, to_flush
)
2277 if ((to_flush
= hp
->_IO_write_ptr
- hp
->_IO_write_base
) > 0)
2279 if ((int) _IO_sputn (s
, hp
->_IO_write_base
, to_flush
) != to_flush
)
2284 /* Unlock the stream. */
2285 _IO_funlockfile (s
);
2286 __libc_cleanup_region_end (0);