1 /* Copyright (C) 1991, 92, 93, 94, 95, 96, 97 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 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.
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.
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. */
26 #include <libc-lock.h>
27 #include <sys/param.h>
29 #include "../locale/localeinfo.h"
31 /* This code is shared between the standard stdio implementation found
32 in GNU C library and the libio implementation originally found in
35 Beside this it is also shared between the normal and wide character
36 implementation as defined in ISO/IEC 9899:1990/Amendment 1:1995. */
38 #ifndef COMPILE_WPRINTF
40 # define UCHAR_T unsigned char
43 # define ISDIGIT(Ch) isdigit (Ch)
46 # define PUT(F, S, N) _IO_sputn ((F), (S), (N))
47 # define PAD(Padchar) \
49 done += _IO_padn (s, (Padchar), width)
51 # define PUTC(C, F) putc (C, F)
52 ssize_t __printf_pad
__P ((FILE *, char pad
, size_t n
));
53 # define PAD(Padchar) \
55 { ssize_t __res = __printf_pad (s, (Padchar), width); \
56 if (__res == -1) return -1; \
60 # define vfprintf vfwprintf
61 # define CHAR_T wchar_t
62 # define UCHAR_T uwchar_t
64 # define L_(Str) L##Str
65 # define ISDIGIT(Ch) iswdigit (Ch)
68 # define PUT(F, S, N) _IO_sputn ((F), (S), (N))
69 # define PAD(Padchar) \
71 done += _IO_wpadn (s, (Padchar), width)
73 # define PUTC(C, F) wputc (C, F)
74 ssize_t __wprintf_pad
__P ((FILE *, wchar_t pad
, size_t n
));
75 # define PAD(Padchar) \
77 { ssize_t __res = __wprintf_pad (s, (Padchar), width); \
78 if (__res == -1) return -1; \
83 /* Include the shared code for parsing the format string. */
84 #include "printf-parse.h"
88 /* This code is for use in libio. */
90 # define PUTC(C, F) _IO_putc_unlocked (C, F)
91 # define vfprintf _IO_vfprintf
92 # define FILE _IO_FILE
94 # define va_list _IO_va_list
96 # define BUFSIZ _IO_BUFSIZ
97 # define ARGCHECK(S, Format) \
100 /* Check file argument for consistence. */ \
101 CHECK_FILE (S, -1); \
102 if (S->_flags & _IO_NO_WRITES) \
104 __set_errno (EBADF); \
107 if (Format == NULL) \
113 # define UNBUFFERED_P(S) ((S)->_IO_file_flags & _IO_UNBUFFERED)
114 #else /* ! USE_IN_LIBIO */
115 /* This code is for use in the GNU C library. */
117 # define PUT(F, S, N) fwrite (S, 1, N, F)
118 # define ARGCHECK(S, Format) \
121 /* Check file argument for consistence. */ \
122 if (!__validfp (S) || !S->__mode.__write) \
124 __set_errno (EBADF); \
127 if (Format == NULL) \
129 __set_errno (EINVAL); \
134 if (__flshfp (S, EOF) == EOF) \
139 # define UNBUFFERED_P(s) ((s)->__buffer == NULL)
141 /* XXX These declarations should go as soon as the stdio header files
142 have these prototypes. */
143 extern void __flockfile (FILE *);
144 extern void __funlockfile (FILE *);
145 #endif /* USE_IN_LIBIO */
148 #define outchar(Ch) \
151 register const int outc = (Ch); \
152 if (PUTC (outc, s) == EOF) \
159 #define outstring(String, Len) \
162 if ((size_t) PUT (s, (String), (Len)) != (size_t) (Len)) \
168 /* For handling long_double and longlong we use the same flag. */
170 # define is_longlong is_long_double
174 /* Global variables. */
175 static const char null
[] = "(null)";
178 /* Helper function to provide temporary buffering for unbuffered streams. */
179 static int buffered_vfprintf
__P ((FILE *stream
, const CHAR_T
*fmt
, va_list));
181 /* Handle unknown format specifier. */
182 static int printf_unknown
__P ((FILE *, const struct printf_info
*,
183 const void *const *));
185 /* Group digits of number string. */
186 static char *group_number
__P ((CHAR_T
*, CHAR_T
*, const CHAR_T
*, wchar_t));
189 /* The function itself. */
191 vfprintf (FILE *s
, const CHAR_T
*format
, va_list ap
)
193 /* The character used as thousands separator. */
194 wchar_t thousands_sep
;
196 /* The string describing the size of groups of digits. */
197 const char *grouping
;
199 /* Place to accumulate the result. */
202 /* Current character in format string. */
205 /* End of leading constant string. */
206 const UCHAR_T
*lead_str_end
;
208 /* Points to next format specifier. */
209 const UCHAR_T
*end_of_spec
;
211 /* Buffer intermediate results. */
212 char work_buffer
[1000];
213 #define workend (&work_buffer[sizeof (work_buffer) - 1])
215 /* State for restartable multibyte character handling functions. */
218 /* We have to save the original argument pointer. */
221 /* Count number of specifiers we already processed. */
224 /* For the %m format we may need the current `errno' value. */
225 int save_errno
= errno
;
228 /* This table maps a character into a number representing a
229 class. In each step there is a destination label for each
231 static const int jump_table
[] =
233 /* ' ' */ 1, 0, 0, /* '#' */ 4,
234 0, /* '%' */ 14, 0, /* '\''*/ 6,
235 0, 0, /* '*' */ 7, /* '+' */ 2,
236 0, /* '-' */ 3, /* '.' */ 9, 0,
237 /* '0' */ 5, /* '1' */ 8, /* '2' */ 8, /* '3' */ 8,
238 /* '4' */ 8, /* '5' */ 8, /* '6' */ 8, /* '7' */ 8,
239 /* '8' */ 8, /* '9' */ 8, 0, 0,
241 0, 0, 0, /* 'C' */ 25,
242 0, /* 'E' */ 19, 0, /* 'G' */ 19,
244 /* 'L' */ 12, 0, 0, 0,
245 0, 0, 0, /* 'S' */ 21,
247 /* 'X' */ 18, 0, /* 'Z' */ 13, 0,
249 0, 0, 0, /* 'c' */ 20,
250 /* 'd' */ 15, /* 'e' */ 19, /* 'f' */ 19, /* 'g' */ 19,
251 /* 'h' */ 10, /* 'i' */ 15, 0, 0,
252 /* 'l' */ 11, /* 'm' */ 24, /* 'n' */ 23, /* 'o' */ 17,
253 /* 'p' */ 22, /* 'q' */ 12, 0, /* 's' */ 21,
254 0, /* 'u' */ 16, 0, 0,
258 #define NOT_IN_JUMP_RANGE(Ch) ((Ch) < ' ' || (Ch) > 'x')
259 #define CHAR_CLASS(Ch) (jump_table[(int) (Ch) - ' '])
260 #define JUMP(ChExpr, table) \
265 ptr = NOT_IN_JUMP_RANGE (spec) ? REF (form_unknown) \
266 : table[CHAR_CLASS (spec)]; \
271 #define STEP0_3_TABLE \
272 /* Step 0: at the beginning. */ \
273 static const void *step0_jumps[26] = \
275 REF (form_unknown), \
276 REF (flag_space), /* for ' ' */ \
277 REF (flag_plus), /* for '+' */ \
278 REF (flag_minus), /* for '-' */ \
279 REF (flag_hash), /* for '<hash>' */ \
280 REF (flag_zero), /* for '0' */ \
281 REF (flag_quote), /* for '\'' */ \
282 REF (width_asterics), /* for '*' */ \
283 REF (width), /* for '1'...'9' */ \
284 REF (precision), /* for '.' */ \
285 REF (mod_half), /* for 'h' */ \
286 REF (mod_long), /* for 'l' */ \
287 REF (mod_longlong), /* for 'L', 'q' */ \
288 REF (mod_size_t), /* for 'Z' */ \
289 REF (form_percent), /* for '%' */ \
290 REF (form_integer), /* for 'd', 'i' */ \
291 REF (form_unsigned), /* for 'u' */ \
292 REF (form_octal), /* for 'o' */ \
293 REF (form_hexa), /* for 'X', 'x' */ \
294 REF (form_float), /* for 'E', 'e', 'f', 'G', 'g' */ \
295 REF (form_character), /* for 'c' */ \
296 REF (form_string), /* for 's', 'S' */ \
297 REF (form_pointer), /* for 'p' */ \
298 REF (form_number), /* for 'n' */ \
299 REF (form_strerror), /* for 'm' */ \
300 REF (form_wcharacter) /* for 'C' */ \
302 /* Step 1: after processing width. */ \
303 static const void *step1_jumps[26] = \
305 REF (form_unknown), \
306 REF (form_unknown), /* for ' ' */ \
307 REF (form_unknown), /* for '+' */ \
308 REF (form_unknown), /* for '-' */ \
309 REF (form_unknown), /* for '<hash>' */ \
310 REF (form_unknown), /* for '0' */ \
311 REF (form_unknown), /* for '\'' */ \
312 REF (form_unknown), /* for '*' */ \
313 REF (form_unknown), /* for '1'...'9' */ \
314 REF (precision), /* for '.' */ \
315 REF (mod_half), /* for 'h' */ \
316 REF (mod_long), /* for 'l' */ \
317 REF (mod_longlong), /* for 'L', 'q' */ \
318 REF (mod_size_t), /* for 'Z' */ \
319 REF (form_percent), /* for '%' */ \
320 REF (form_integer), /* for 'd', 'i' */ \
321 REF (form_unsigned), /* for 'u' */ \
322 REF (form_octal), /* for 'o' */ \
323 REF (form_hexa), /* for 'X', 'x' */ \
324 REF (form_float), /* for 'E', 'e', 'f', 'G', 'g' */ \
325 REF (form_character), /* for 'c' */ \
326 REF (form_string), /* for 's', 'S' */ \
327 REF (form_pointer), /* for 'p' */ \
328 REF (form_number), /* for 'n' */ \
329 REF (form_strerror), /* for 'm' */ \
330 REF (form_wcharacter) /* for 'C' */ \
332 /* Step 2: after processing precision. */ \
333 static const void *step2_jumps[26] = \
335 REF (form_unknown), \
336 REF (form_unknown), /* for ' ' */ \
337 REF (form_unknown), /* for '+' */ \
338 REF (form_unknown), /* for '-' */ \
339 REF (form_unknown), /* for '<hash>' */ \
340 REF (form_unknown), /* for '0' */ \
341 REF (form_unknown), /* for '\'' */ \
342 REF (form_unknown), /* for '*' */ \
343 REF (form_unknown), /* for '1'...'9' */ \
344 REF (form_unknown), /* for '.' */ \
345 REF (mod_half), /* for 'h' */ \
346 REF (mod_long), /* for 'l' */ \
347 REF (mod_longlong), /* for 'L', 'q' */ \
348 REF (mod_size_t), /* for 'Z' */ \
349 REF (form_percent), /* for '%' */ \
350 REF (form_integer), /* for 'd', 'i' */ \
351 REF (form_unsigned), /* for 'u' */ \
352 REF (form_octal), /* for 'o' */ \
353 REF (form_hexa), /* for 'X', 'x' */ \
354 REF (form_float), /* for 'E', 'e', 'f', 'G', 'g' */ \
355 REF (form_character), /* for 'c' */ \
356 REF (form_string), /* for 's', 'S' */ \
357 REF (form_pointer), /* for 'p' */ \
358 REF (form_number), /* for 'n' */ \
359 REF (form_strerror), /* for 'm' */ \
360 REF (form_wcharacter) /* for 'C' */ \
362 /* Step 3: after processing first 'l' modifier. */ \
363 static const void *step3_jumps[26] = \
365 REF (form_unknown), \
366 REF (form_unknown), /* for ' ' */ \
367 REF (form_unknown), /* for '+' */ \
368 REF (form_unknown), /* for '-' */ \
369 REF (form_unknown), /* for '<hash>' */ \
370 REF (form_unknown), /* for '0' */ \
371 REF (form_unknown), /* for '\'' */ \
372 REF (form_unknown), /* for '*' */ \
373 REF (form_unknown), /* for '1'...'9' */ \
374 REF (form_unknown), /* for '.' */ \
375 REF (form_unknown), /* for 'h' */ \
376 REF (mod_longlong), /* for 'l' */ \
377 REF (form_unknown), /* for 'L', 'q' */ \
378 REF (form_unknown), /* for 'Z' */ \
379 REF (form_percent), /* for '%' */ \
380 REF (form_integer), /* for 'd', 'i' */ \
381 REF (form_unsigned), /* for 'u' */ \
382 REF (form_octal), /* for 'o' */ \
383 REF (form_hexa), /* for 'X', 'x' */ \
384 REF (form_float), /* for 'E', 'e', 'f', 'G', 'g' */ \
385 REF (form_character), /* for 'c' */ \
386 REF (form_string), /* for 's', 'S' */ \
387 REF (form_pointer), /* for 'p' */ \
388 REF (form_number), /* for 'n' */ \
389 REF (form_strerror), /* for 'm' */ \
390 REF (form_wcharacter) /* for 'C' */ \
393 #define STEP4_TABLE \
394 /* Step 4: processing format specifier. */ \
395 static const void *step4_jumps[26] = \
397 REF (form_unknown), \
398 REF (form_unknown), /* for ' ' */ \
399 REF (form_unknown), /* for '+' */ \
400 REF (form_unknown), /* for '-' */ \
401 REF (form_unknown), /* for '<hash>' */ \
402 REF (form_unknown), /* for '0' */ \
403 REF (form_unknown), /* for '\'' */ \
404 REF (form_unknown), /* for '*' */ \
405 REF (form_unknown), /* for '1'...'9' */ \
406 REF (form_unknown), /* for '.' */ \
407 REF (form_unknown), /* for 'h' */ \
408 REF (form_unknown), /* for 'l' */ \
409 REF (form_unknown), /* for 'L', 'q' */ \
410 REF (form_unknown), /* for 'Z' */ \
411 REF (form_percent), /* for '%' */ \
412 REF (form_integer), /* for 'd', 'i' */ \
413 REF (form_unsigned), /* for 'u' */ \
414 REF (form_octal), /* for 'o' */ \
415 REF (form_hexa), /* for 'X', 'x' */ \
416 REF (form_float), /* for 'E', 'e', 'f', 'G', 'g' */ \
417 REF (form_character), /* for 'c' */ \
418 REF (form_string), /* for 's', 'S' */ \
419 REF (form_pointer), /* for 'p' */ \
420 REF (form_number), /* for 'n' */ \
421 REF (form_strerror), /* for 'm' */ \
422 REF (form_wcharacter) /* for 'C' */ \
426 #define process_arg(fspec) \
427 /* Start real work. We know about all flags and modifiers and \
428 now process the wanted format specifier. */ \
429 LABEL (form_percent): \
430 /* Write a literal "%". */ \
434 LABEL (form_integer): \
435 /* Signed decimal integer. */ \
440 long long int signed_number; \
443 signed_number = va_arg (ap, long long int); \
445 signed_number = args_value[fspec->data_arg].pa_long_long_int; \
447 is_negative = signed_number < 0; \
448 number.longlong = is_negative ? (- signed_number) : signed_number; \
450 goto LABEL (longlong_number); \
454 long int signed_number; \
458 signed_number = va_arg (ap, long int); \
459 else /* `short int' will be promoted to `int'. */ \
460 signed_number = va_arg (ap, int); \
463 signed_number = args_value[fspec->data_arg].pa_long_int; \
465 signed_number = args_value[fspec->data_arg].pa_int; \
467 is_negative = signed_number < 0; \
468 number.word = is_negative ? (- signed_number) : signed_number; \
470 goto LABEL (number); \
474 LABEL (form_unsigned): \
475 /* Unsigned decimal integer. */ \
477 goto LABEL (unsigned_number); \
480 LABEL (form_octal): \
481 /* Unsigned octal integer. */ \
483 goto LABEL (unsigned_number); \
487 /* Unsigned hexadecimal integer. */ \
490 LABEL (unsigned_number): /* Unsigned number of base BASE. */ \
492 /* ANSI specifies the `+' and ` ' flags only for signed \
501 number.longlong = va_arg (ap, unsigned long long int); \
503 number.longlong = args_value[fspec->data_arg].pa_u_long_long_int; \
505 LABEL (longlong_number): \
507 /* Supply a default precision if none was given. */ \
510 /* We have to take care for the '0' flag. If a precision \
511 is given it must be ignored. */ \
514 /* If the precision is 0 and the number is 0 nothing has to \
515 be written for the number. */ \
516 if (prec == 0 && number.longlong == 0) \
520 /* Put the number in WORK. */ \
521 string = _itoa (number.longlong, workend + 1, base, \
524 if (group && grouping) \
525 string = group_number (string, workend, grouping, \
528 /* Simply further test for num != 0. */ \
529 number.word = number.longlong != 0; \
535 number.word = va_arg (ap, unsigned long int); \
536 else if (!is_short) \
537 number.word = va_arg (ap, unsigned int); \
539 number.word = (unsigned short int) va_arg (ap, unsigned int); \
542 number.word = args_value[fspec->data_arg].pa_u_long_int; \
543 else if (!is_short) \
544 number.word = args_value[fspec->data_arg].pa_u_int; \
546 number.word = (unsigned short int) \
547 args_value[fspec->data_arg].pa_u_short_int; \
551 /* Supply a default precision if none was given. */ \
554 /* We have to take care for the '0' flag. If a precision \
555 is given it must be ignored. */ \
558 /* If the precision is 0 and the number is 0 nothing has to \
559 be written for the number. */ \
560 if (prec == 0 && number.word == 0) \
564 /* Put the number in WORK. */ \
565 string = _itoa_word (number.word, workend + 1, base, \
568 if (group && grouping) \
569 string = group_number (string, workend, grouping, \
574 prec -= workend - string; \
577 /* Add zeros to the precision. */ \
580 else if (number.word != 0 && alt && base == 8) \
581 /* Add octal marker. */ \
586 width -= workend - string; \
588 if (number.word != 0 && alt && base == 16) \
589 /* Account for 0X hex marker. */ \
592 if (is_negative || showsign || space) \
597 while (width-- > 0) \
600 if (number.word != 0 && alt && base == 16) \
615 if (number.word != 0 && alt && base == 16) \
628 while (width-- > 0) \
632 outstring (string + 1, workend - string); \
638 if (number.word != 0 && alt && base == 16) \
651 width -= workend - string; \
652 outstring (string + 1, workend - string); \
658 LABEL (form_float): \
660 /* Floating-point number. This is handled by printf_fp.c. */ \
661 extern int __printf_fp __P ((FILE *, const struct printf_info *, \
662 const void **const)); \
668 struct printf_info info = { prec: prec, \
671 is_long_double: is_long_double, \
672 is_short: is_short, \
677 showsign: showsign, \
682 if (is_long_double) \
683 the_arg.pa_long_double = va_arg (ap, long double); \
685 the_arg.pa_double = va_arg (ap, double); \
686 ptr = (const void *) &the_arg; \
688 function_done = __printf_fp (s, &info, &ptr); \
692 ptr = (const void *) &args_value[fspec->data_arg]; \
694 function_done = __printf_fp (s, &fspec->info, &ptr); \
697 if (function_done < 0) \
698 /* Error in print handler. */ \
701 done += function_done; \
705 LABEL (form_character): \
708 goto LABEL (form_wcharacter); \
709 --width; /* Account for the character itself. */ \
713 outchar ((unsigned char) va_arg (ap, int)); /* Promoted. */ \
715 outchar ((unsigned char) args_value[fspec->data_arg].pa_char); \
720 LABEL (form_wcharacter): \
722 /* Wide character. */ \
723 char buf[MB_CUR_MAX]; \
727 len = __wcrtomb (buf, (fspec == NULL ? va_arg (ap, wint_t) \
728 : args_value[fspec->data_arg].pa_wchar), \
733 outstring (buf, len); \
739 LABEL (form_string): \
743 /* The string argument could in fact be `char *' or `wchar_t *'. \
744 But this should not make a difference here. */ \
746 string = (char *) va_arg (ap, const char *); \
748 string = (char *) args_value[fspec->data_arg].pa_string; \
750 /* Entry point for printing other strings. */ \
751 LABEL (print_string): \
753 if (string == NULL) \
755 /* Write "(null)" if there's space. */ \
756 if (prec == -1 || prec >= (int) sizeof (null) - 1) \
758 string = (char *) null; \
759 len = sizeof (null) - 1; \
763 string = (char *) ""; \
767 else if (!is_long && spec != L_('S')) \
770 /* Search for the end of the string, but don't search past \
771 the length specified by the precision. */ \
772 len = strnlen (string, prec); \
774 len = strlen (string); \
778 const wchar_t *s2 = (const wchar_t *) string; \
781 len = __wcsrtombs (NULL, &s2, 0, &mbstate); \
782 if (len == (size_t) -1) \
783 /* Illegal wide-character string. */ \
786 s2 = (const wchar_t *) string; \
787 string = alloca (len + 1); \
788 (void) __wcsrtombs (string, &s2, prec != -1 ? prec : UINT_MAX, \
792 if ((width -= len) < 0) \
794 outstring (string, len); \
800 outstring (string, len); \
806 LABEL (form_pointer): \
807 /* Generic pointer. */ \
811 ptr = va_arg (ap, void *); \
813 ptr = args_value[fspec->data_arg].pa_pointer; \
816 /* If the pointer is not NULL, write it as a %#x spec. */ \
818 number.word = (unsigned long int) ptr; \
823 goto LABEL (number); \
827 /* Write "(nil)" for a nil pointer. */ \
828 string = (char *) "(nil)"; \
829 /* Make sure the full string "(nil)" is printed. */ \
832 is_long = 0; /* This is no wide-char string. */ \
833 goto LABEL (print_string); \
838 LABEL (form_number): \
839 /* Answer the count of characters written. */ \
842 *(long long int *) va_arg (ap, void *) = done; \
844 *(long int *) va_arg (ap, void *) = done; \
845 else if (!is_short) \
846 *(int *) va_arg (ap, void *) = done; \
848 *(short int *) va_arg (ap, void *) = done; \
851 *(long long int *) args_value[fspec->data_arg].pa_pointer = done; \
853 *(long int *) args_value[fspec->data_arg].pa_pointer = done; \
854 else if (!is_short) \
855 *(int *) args_value[fspec->data_arg].pa_pointer = done; \
857 *(short int *) args_value[fspec->data_arg].pa_pointer = done; \
860 LABEL (form_strerror): \
861 /* Print description of error ERRNO. */ \
863 extern char *_strerror_internal __P ((int, char *buf, size_t)); \
866 _strerror_internal (save_errno, work_buffer, sizeof work_buffer); \
868 is_long = 0; /* This is no wide-char string. */ \
869 goto LABEL (print_string)
872 /* Sanity check of arguments. */
873 ARGCHECK (s
, format
);
875 if (UNBUFFERED_P (s
))
876 /* Use a helper function which will allocate a local temporary buffer
877 for the stream and then call us again. */
878 return buffered_vfprintf (s
, format
, ap
);
880 /* Initialize local variables. */
882 grouping
= (const char *) -1;
884 /* This macro will be available soon in gcc's <stdarg.h>. Me need it
885 since on some systems `va_list' is not an integral type. */
886 __va_copy (ap_save
, ap
);
892 /* Find the first format specifier. */
893 f
= lead_str_end
= find_spec (format
, &mbstate
);
897 __libc_cleanup_region_start ((void (*) (void *)) &_IO_funlockfile
, s
);
900 __libc_cleanup_region_start ((void (*) (void *)) &__funlockfile
, s
);
904 /* Write the literal text before the first format. */
905 outstring ((const UCHAR_T
*) format
,
906 lead_str_end
- (const UCHAR_T
*) format
);
908 /* If we only have to print a simple string, return now. */
912 /* Process whole format string. */
915 #define REF(Name) &&do_##Name
916 #define LABEL(Name) do_##Name
920 union printf_arg
*args_value
; /* This is not used here but ... */
921 int is_negative
; /* Flag for negative number. */
924 unsigned long long int longlong
;
925 unsigned long int word
;
928 union printf_arg the_arg
;
929 char *string
; /* Pointer to argument string. */
930 int alt
= 0; /* Alternate format. */
931 int space
= 0; /* Use space prefix if no sign is needed. */
932 int left
= 0; /* Left-justify output. */
933 int showsign
= 0; /* Always begin with plus or minus sign. */
934 int group
= 0; /* Print numbers according grouping rules. */
935 int is_long_double
= 0; /* Argument is long double/ long long int. */
936 int is_short
= 0; /* Argument is long int. */
937 int is_long
= 0; /* Argument is short int. */
938 int width
= 0; /* Width of output; 0 means none specified. */
939 int prec
= -1; /* Precision of output; -1 means none specified. */
940 char pad
= ' '; /* Padding character. */
943 /* Get current character in format string. */
944 JUMP (*++f
, step0_jumps
);
949 JUMP (*++f
, step0_jumps
);
954 JUMP (*++f
, step0_jumps
);
960 JUMP (*++f
, step0_jumps
);
965 JUMP (*++f
, step0_jumps
);
971 JUMP (*++f
, step0_jumps
);
977 /* XXX Completely wrong. Use wctob. */
978 if (grouping
== (const char *) -1)
980 /* Figure out the thousands separator character. */
981 if (mbtowc (&thousands_sep
,
982 _NL_CURRENT (LC_NUMERIC
, THOUSANDS_SEP
),
983 strlen (_NL_CURRENT (LC_NUMERIC
, THOUSANDS_SEP
))) <= 0)
984 thousands_sep
= (wchar_t)
985 *_NL_CURRENT (LC_NUMERIC
, THOUSANDS_SEP
);
986 grouping
= _NL_CURRENT (LC_NUMERIC
, GROUPING
);
987 if (*grouping
== '\0' || *grouping
== CHAR_MAX
988 || thousands_sep
== L
'\0')
991 JUMP (*++f
, step0_jumps
);
993 /* Get width from argument. */
994 LABEL (width_asterics
):
996 const UCHAR_T
*tmp
; /* Temporary value. */
999 if (ISDIGIT (*tmp
) && read_int (&tmp
) && *tmp
== L_('$'))
1000 /* The width comes from a positional parameter. */
1003 width
= va_arg (ap
, int);
1005 /* Negative width means left justified. */
1013 JUMP (*f
, step1_jumps
);
1015 /* Given width in format string. */
1017 width
= read_int (&f
);
1019 /* Oh, oh. The argument comes from a positional parameter. */
1021 JUMP (*f
, step1_jumps
);
1027 const UCHAR_T
*tmp
; /* Temporary value. */
1030 if (ISDIGIT (*tmp
) && read_int (&tmp
) > 0 && *tmp
== L_('$'))
1031 /* The precision comes from a positional parameter. */
1034 prec
= va_arg (ap
, int);
1036 /* If the precision is negative the precision is omitted. */
1040 else if (ISDIGIT (*f
))
1041 prec
= read_int (&f
);
1044 JUMP (*f
, step2_jumps
);
1046 /* Process 'h' modifier. No other modifier is allowed to
1050 JUMP (*++f
, step4_jumps
);
1052 /* Process 'l' modifier. There might another 'l' follow. */
1055 JUMP (*++f
, step3_jumps
);
1057 /* Process 'L', 'q', or 'll' modifier. No other modifier is
1058 allowed to follow. */
1059 LABEL (mod_longlong
):
1061 JUMP (*++f
, step4_jumps
);
1064 is_longlong
= sizeof (size_t) > sizeof (unsigned long int);
1065 is_long
= sizeof (size_t) > sizeof (unsigned int);
1066 JUMP (*++f
, step4_jumps
);
1069 /* Process current format. */
1072 process_arg (((struct printf_spec
*) NULL
));
1074 LABEL (form_unknown
):
1075 if (spec
== L_('\0'))
1077 /* The format string ended before the specifier is complete. */
1082 /* If we are in the fast loop force entering the complicated
1087 /* The format is correctly handled. */
1090 /* Look for next format specifier. */
1091 f
= find_spec ((end_of_spec
= ++f
), &mbstate
);
1093 /* Write the following constant string. */
1094 outstring (end_of_spec
, f
- end_of_spec
);
1096 while (*f
!= L_('\0'));
1098 /* Unlock stream and return. */
1101 /* Here starts the more complex loop to handle positional parameters. */
1104 /* Array with information about the needed arguments. This has to
1105 be dynamically extensible. */
1107 size_t nspecs_max
= 32; /* A more or less arbitrary start value. */
1108 struct printf_spec
*specs
1109 = alloca (nspecs_max
* sizeof (struct printf_spec
));
1111 /* The number of arguments the format string requests. This will
1112 determine the size of the array needed to store the argument
1116 union printf_arg
*args_value
;
1118 /* Positional parameters refer to arguments directly. This could
1119 also determine the maximum number of arguments. Track the
1121 size_t max_ref_arg
= 0;
1123 /* Just a counter. */
1127 if (grouping
== (const char *) -1)
1129 /* XXX Use wctob. But this is incompatible for now. */
1130 /* Figure out the thousands separator character. */
1131 if (mbtowc (&thousands_sep
,
1132 _NL_CURRENT (LC_NUMERIC
, THOUSANDS_SEP
),
1133 strlen (_NL_CURRENT (LC_NUMERIC
, THOUSANDS_SEP
))) <= 0)
1134 thousands_sep
= (wchar_t) *_NL_CURRENT (LC_NUMERIC
, THOUSANDS_SEP
);
1135 grouping
= _NL_CURRENT (LC_NUMERIC
, GROUPING
);
1136 if (*grouping
== '\0' || *grouping
== CHAR_MAX
1137 || thousands_sep
== L
'\0')
1141 for (f
= lead_str_end
; *f
!= '\0'; f
= specs
[nspecs
++].next_fmt
)
1143 if (nspecs
>= nspecs_max
)
1145 /* Extend the array of format specifiers. */
1146 struct printf_spec
*old
= specs
;
1149 specs
= alloca (nspecs_max
* sizeof (struct printf_spec
));
1151 if (specs
== &old
[nspecs
])
1152 /* Stack grows up, OLD was the last thing allocated;
1154 nspecs_max
+= nspecs_max
/ 2;
1157 /* Copy the old array's elements to the new space. */
1158 memcpy (specs
, old
, nspecs
* sizeof (struct printf_spec
));
1159 if (old
== &specs
[nspecs
])
1160 /* Stack grows down, OLD was just below the new
1161 SPECS. We can use that space when the new space
1163 nspecs_max
+= nspecs_max
/ 2;
1167 /* Parse the format specifier. */
1168 nargs
+= parse_one_spec (f
, nargs
, &specs
[nspecs
], &max_ref_arg
,
1172 /* Determine the number of arguments the format string consumes. */
1173 nargs
= MAX (nargs
, max_ref_arg
);
1175 /* Allocate memory for the argument descriptions. */
1176 args_type
= alloca (nargs
* sizeof (int));
1177 memset (args_type
, 0, nargs
* sizeof (int));
1178 args_value
= alloca (nargs
* sizeof (union printf_arg
));
1180 /* XXX Could do sanity check here: If any element in ARGS_TYPE is
1181 still zero after this loop, format is invalid. For now we
1182 simply use 0 as the value. */
1184 /* Fill in the types of all the arguments. */
1185 for (cnt
= 0; cnt
< nspecs
; ++cnt
)
1187 /* If the width is determined by an argument this is an int. */
1188 if (specs
[cnt
].width_arg
!= -1)
1189 args_type
[specs
[cnt
].width_arg
] = PA_INT
;
1191 /* If the precision is determined by an argument this is an int. */
1192 if (specs
[cnt
].prec_arg
!= -1)
1193 args_type
[specs
[cnt
].prec_arg
] = PA_INT
;
1195 switch (specs
[cnt
].ndata_args
)
1197 case 0: /* No arguments. */
1199 case 1: /* One argument; we already have the type. */
1200 args_type
[specs
[cnt
].data_arg
] = specs
[cnt
].data_arg_type
;
1203 /* We have more than one argument for this format spec.
1204 We must call the arginfo function again to determine
1206 (void) (*__printf_arginfo_table
[specs
[cnt
].info
.spec
])
1208 specs
[cnt
].ndata_args
, &args_type
[specs
[cnt
].data_arg
]);
1213 /* Now we know all the types and the order. Fill in the argument
1215 for (cnt
= 0; cnt
< nargs
; ++cnt
)
1216 switch (args_type
[cnt
])
1218 #define T(tag, mem, type) \
1220 args_value[cnt].mem = va_arg (ap_save, type); \
1223 T (PA_CHAR
, pa_char
, int); /* Promoted. */
1224 T (PA_WCHAR
, pa_wchar
, wint_t);
1225 T (PA_INT
|PA_FLAG_SHORT
, pa_short_int
, int); /* Promoted. */
1226 T (PA_INT
, pa_int
, int);
1227 T (PA_INT
|PA_FLAG_LONG
, pa_long_int
, long int);
1228 T (PA_INT
|PA_FLAG_LONG_LONG
, pa_long_long_int
, long long int);
1229 T (PA_FLOAT
, pa_float
, double); /* Promoted. */
1230 T (PA_DOUBLE
, pa_double
, double);
1231 T (PA_DOUBLE
|PA_FLAG_LONG_DOUBLE
, pa_long_double
, long double);
1232 T (PA_STRING
, pa_string
, const char *);
1233 T (PA_WSTRING
, pa_wstring
, const wchar_t *);
1234 T (PA_POINTER
, pa_pointer
, void *);
1237 if ((args_type
[cnt
] & PA_FLAG_PTR
) != 0)
1238 args_value
[cnt
].pa_pointer
= va_arg (ap_save
, void *);
1240 args_value
[cnt
].pa_long_double
= 0.0;
1244 /* Now walk through all format specifiers and process them. */
1245 for (; (size_t) nspecs_done
< nspecs
; ++nspecs_done
)
1248 #define REF(Name) &&do2_##Name
1250 #define LABEL(Name) do2_##Name
1256 unsigned long long int longlong
;
1257 unsigned long int word
;
1260 union printf_arg the_arg
;
1261 char *string
; /* Pointer to argument string. */
1263 /* Fill variables from values in struct. */
1264 int alt
= specs
[nspecs_done
].info
.alt
;
1265 int space
= specs
[nspecs_done
].info
.space
;
1266 int left
= specs
[nspecs_done
].info
.left
;
1267 int showsign
= specs
[nspecs_done
].info
.showsign
;
1268 int group
= specs
[nspecs_done
].info
.group
;
1269 int is_long_double
= specs
[nspecs_done
].info
.is_long_double
;
1270 int is_short
= specs
[nspecs_done
].info
.is_short
;
1271 int is_long
= specs
[nspecs_done
].info
.is_long
;
1272 int width
= specs
[nspecs_done
].info
.width
;
1273 int prec
= specs
[nspecs_done
].info
.prec
;
1274 char pad
= specs
[nspecs_done
].info
.pad
;
1275 CHAR_T spec
= specs
[nspecs_done
].info
.spec
;
1277 /* Fill in last information. */
1278 if (specs
[nspecs_done
].width_arg
!= -1)
1280 /* Extract the field width from an argument. */
1281 specs
[nspecs_done
].info
.width
=
1282 args_value
[specs
[nspecs_done
].width_arg
].pa_int
;
1284 if (specs
[nspecs_done
].info
.width
< 0)
1285 /* If the width value is negative left justification is
1286 selected and the value is taken as being positive. */
1288 specs
[nspecs_done
].info
.width
*= -1;
1289 left
= specs
[nspecs_done
].info
.left
= 1;
1291 width
= specs
[nspecs_done
].info
.width
;
1294 if (specs
[nspecs_done
].prec_arg
!= -1)
1296 /* Extract the precision from an argument. */
1297 specs
[nspecs_done
].info
.prec
=
1298 args_value
[specs
[nspecs_done
].prec_arg
].pa_int
;
1300 if (specs
[nspecs_done
].info
.prec
< 0)
1301 /* If the precision is negative the precision is
1303 specs
[nspecs_done
].info
.prec
= -1;
1305 prec
= specs
[nspecs_done
].info
.prec
;
1308 /* Process format specifiers. */
1311 JUMP (spec
, step4_jumps
);
1313 process_arg ((&specs
[nspecs_done
]));
1315 LABEL (form_unknown
):
1317 extern printf_function
**__printf_function_table
;
1319 printf_function
*function
;
1324 (__printf_function_table
== NULL
? NULL
:
1325 __printf_function_table
[specs
[nspecs_done
].info
.spec
]);
1327 if (function
== NULL
)
1328 function
= &printf_unknown
;
1330 ptr
= alloca (specs
[nspecs_done
].ndata_args
1331 * sizeof (const void *));
1333 /* Fill in an array of pointers to the argument values. */
1334 for (i
= 0; i
< specs
[nspecs_done
].ndata_args
; ++i
)
1335 ptr
[i
] = &args_value
[specs
[nspecs_done
].data_arg
+ i
];
1337 /* Call the function. */
1338 function_done
= (*function
) (s
, &specs
[nspecs_done
].info
, ptr
);
1340 /* If an error occurred we don't have information about #
1342 if (function_done
< 0)
1348 done
+= function_done
;
1353 /* Write the following constant string. */
1354 outstring (specs
[nspecs_done
].end_of_fmt
,
1355 specs
[nspecs_done
].next_fmt
1356 - specs
[nspecs_done
].end_of_fmt
);
1361 /* Unlock the stream. */
1362 __libc_cleanup_region_end (1);
1369 # ifdef strong_alias
1370 /* This is for glibc. */
1371 strong_alias (_IO_vfprintf
, vfprintf
);
1373 # if defined __ELF__ || defined __GNU_LIBRARY__
1374 # include <gnu-stabs.h>
1376 weak_alias (_IO_vfprintf
, vfprintf
);
1382 /* Handle an unknown format specifier. This prints out a canonicalized
1383 representation of the format spec itself. */
1385 printf_unknown (FILE *s
, const struct printf_info
*info
,
1386 const void *const *args
)
1390 char work_buffer
[BUFSIZ
];
1401 else if (info
->space
)
1405 if (info
->pad
== '0')
1408 if (info
->width
!= 0)
1410 w
= _itoa_word (info
->width
, workend
+ 1, 10, 0);
1411 while (w
<= workend
)
1415 if (info
->prec
!= -1)
1418 w
= _itoa_word (info
->prec
, workend
+ 1, 10, 0);
1419 while (w
<= workend
)
1423 if (info
->spec
!= '\0')
1424 outchar (info
->spec
);
1429 /* Group the digits according to the grouping rules of the current locale.
1430 The interpretation of GROUPING is as in `struct lconv' from <locale.h>. */
1432 group_number (CHAR_T
*w
, CHAR_T
*rear_ptr
, const CHAR_T
*grouping
,
1433 wchar_t thousands_sep
)
1438 /* We treat all negative values like CHAR_MAX. */
1440 if (*grouping
== CHAR_MAX
|| *grouping
<= 0)
1441 /* No grouping should be done. */
1446 /* Copy existing string so that nothing gets overwritten. */
1447 src
= (char *) alloca (rear_ptr
- w
);
1448 memcpy (src
, w
+ 1, rear_ptr
- w
);
1449 s
= &src
[rear_ptr
- w
- 1];
1452 /* Process all characters in the string. */
1457 if (--len
== 0 && s
>= src
)
1459 /* A new group begins. */
1460 *w
-- = thousands_sep
;
1463 if (*grouping
== '\0')
1464 /* The previous grouping repeats ad infinitum. */
1466 else if (*grouping
== CHAR_MAX
|| *grouping
< 0)
1468 /* No further grouping to be done.
1469 Copy the rest of the number. */
1481 /* Helper "class" for `fprintf to unbuffered': creates a temporary buffer. */
1484 struct _IO_FILE_plus _f
;
1485 _IO_FILE
*_put_stream
;
1486 #ifdef _IO_MTSAFE_IO
1492 _IO_helper_overflow (_IO_FILE
*s
, int c
)
1494 _IO_FILE
*target
= ((struct helper_file
*) s
)->_put_stream
;
1495 int used
= s
->_IO_write_ptr
- s
->_IO_write_base
;
1498 _IO_size_t written
= _IO_sputn (target
, s
->_IO_write_base
, used
);
1499 s
->_IO_write_ptr
-= written
;
1504 static const struct _IO_jump_t _IO_helper_jumps
=
1507 JUMP_INIT (finish
, _IO_default_finish
),
1508 JUMP_INIT (overflow
, _IO_helper_overflow
),
1509 JUMP_INIT (underflow
, _IO_default_underflow
),
1510 JUMP_INIT (uflow
, _IO_default_uflow
),
1511 JUMP_INIT (pbackfail
, _IO_default_pbackfail
),
1512 JUMP_INIT (xsputn
, _IO_default_xsputn
),
1513 JUMP_INIT (xsgetn
, _IO_default_xsgetn
),
1514 JUMP_INIT (seekoff
, _IO_default_seekoff
),
1515 JUMP_INIT (seekpos
, _IO_default_seekpos
),
1516 JUMP_INIT (setbuf
, _IO_default_setbuf
),
1517 JUMP_INIT (sync
, _IO_default_sync
),
1518 JUMP_INIT (doallocate
, _IO_default_doallocate
),
1519 JUMP_INIT (read
, _IO_default_read
),
1520 JUMP_INIT (write
, _IO_default_write
),
1521 JUMP_INIT (seek
, _IO_default_seek
),
1522 JUMP_INIT (close
, _IO_default_close
),
1523 JUMP_INIT (stat
, _IO_default_stat
)
1527 buffered_vfprintf (register _IO_FILE
*s
, const CHAR_T
*format
,
1530 char buf
[_IO_BUFSIZ
];
1531 struct helper_file helper
;
1532 register _IO_FILE
*hp
= (_IO_FILE
*) &helper
;
1533 int result
, to_flush
;
1535 /* Initialize helper. */
1536 helper
._put_stream
= s
;
1537 hp
->_IO_write_base
= buf
;
1538 hp
->_IO_write_ptr
= buf
;
1539 hp
->_IO_write_end
= buf
+ sizeof buf
;
1540 hp
->_IO_file_flags
= _IO_MAGIC
|_IO_NO_READS
;
1541 #ifdef _IO_MTSAFE_IO
1542 hp
->_lock
= &helper
.lock
;
1543 __libc_lock_init (*hp
->_lock
);
1545 _IO_JUMPS (hp
) = (struct _IO_jump_t
*) &_IO_helper_jumps
;
1547 /* Now print to helper instead. */
1548 result
= _IO_vfprintf (hp
, format
, args
);
1550 /* Now flush anything from the helper to the S. */
1551 if ((to_flush
= hp
->_IO_write_ptr
- hp
->_IO_write_base
) > 0)
1553 if ((int) _IO_sputn (s
, hp
->_IO_write_base
, to_flush
) != to_flush
)
1560 #else /* !USE_IN_LIBIO */
1563 buffered_vfprintf (register FILE *s
, const CHAR_T
*format
, va_list args
)
1568 s
->__bufp
= s
->__buffer
= buf
;
1569 s
->__bufsize
= sizeof buf
;
1570 s
->__put_limit
= s
->__buffer
+ s
->__bufsize
;
1571 s
->__get_limit
= s
->__buffer
;
1573 /* Now use buffer to print. */
1574 result
= vfprintf (s
, format
, args
);
1576 if (fflush (s
) == EOF
)
1578 s
->__buffer
= s
->__bufp
= s
->__get_limit
= s
->__put_limit
= NULL
;
1584 /* Pads string with given number of a specified character.
1585 This code is taken from iopadn.c of the GNU I/O library. */
1587 static const CHAR_T blanks
[PADSIZE
] =
1588 { L_(' '), L_(' '), L_(' '), L_(' '), L_(' '), L_(' '), L_(' '), L_(' '),
1589 L_(' '), L_(' '), L_(' '), L_(' '), L_(' '), L_(' '), L_(' '), L_(' ') };
1590 static const CHAR_T zeroes
[PADSIZE
] =
1591 { L_('0'), L_('0'), L_('0'), L_('0'), L_('0'), L_('0'), L_('0'), L_('0'),
1592 L_('0'), L_('0'), L_('0'), L_('0'), L_('0'), L_('0'), L_('0'), L_('0') };
1595 #ifndef COMPILE_WPRINTF
1596 __printf_pad (FILE *s
, char pad
, size_t count
)
1598 __wprintf_pad (FILE *s
, wchar_t pad
, size_t count
)
1601 const CHAR_T
*padptr
;
1604 padptr
= pad
== L_(' ') ? blanks
: zeroes
;
1606 for (i
= count
; i
>= PADSIZE
; i
-= PADSIZE
)
1607 if (PUT (s
, padptr
, PADSIZE
) != PADSIZE
)
1610 if (PUT (s
, padptr
, i
) != i
)
1616 #endif /* USE_IN_LIBIO */