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[glibc.git] / stdio-common / vfprintf.c
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1 /* Copyright (C) 1991, 92, 93, 94, 95, 96, 97 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 <bits/libc-lock.h>
27 #include <sys/param.h>
28 #include "_itoa.h"
29 #include "../locale/localeinfo.h"
30
31 /* This code is shared between the standard stdio implementation found
32 in GNU C library and the libio implementation originally found in
33 GNU libg++.
34
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. */
37
38 #ifndef COMPILE_WPRINTF
39 # define CHAR_T char
40 # define UCHAR_T unsigned char
41 # define INT_T int
42 # define L_(Str) Str
43 # define ISDIGIT(Ch) isdigit (Ch)
44
45 # ifdef USE_IN_LIBIO
46 # define PUT(F, S, N) _IO_sputn ((F), (S), (N))
47 # define PAD(Padchar) \
48 if (width > 0) \
49 done += _IO_padn (s, (Padchar), width)
50 # else
51 # define PUTC(C, F) putc (C, F)
52 ssize_t __printf_pad __P ((FILE *, char pad, size_t n));
53 # define PAD(Padchar) \
54 if (width > 0) \
55 { ssize_t __res = __printf_pad (s, (Padchar), width); \
56 if (__res == -1) return -1; \
57 done += __res; }
58 # endif
59 #else
60 # define vfprintf vfwprintf
61 # define CHAR_T wchar_t
62 # define UCHAR_T uwchar_t
63 # define INT_T wint_t
64 # define L_(Str) L##Str
65 # define ISDIGIT(Ch) iswdigit (Ch)
66
67 # ifdef USE_IN_LIBIO
68 # define PUT(F, S, N) _IO_sputn ((F), (S), (N))
69 # define PAD(Padchar) \
70 if (width > 0) \
71 done += _IO_wpadn (s, (Padchar), width)
72 # else
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) \
76 if (width > 0) \
77 { ssize_t __res = __wprintf_pad (s, (Padchar), width); \
78 if (__res == -1) return -1; \
79 done += __res; }
80 # endif
81 #endif
82
83 /* Include the shared code for parsing the format string. */
84 #include "printf-parse.h"
85
86
87 #ifdef USE_IN_LIBIO
88 /* This code is for use in libio. */
89 # include <libioP.h>
90 # define PUTC(C, F) _IO_putc_unlocked (C, F)
91 # define vfprintf _IO_vfprintf
92 # define FILE _IO_FILE
93 # undef va_list
94 # define va_list _IO_va_list
95 # undef BUFSIZ
96 # define BUFSIZ _IO_BUFSIZ
97 # define ARGCHECK(S, Format) \
98 do \
99 { \
100 /* Check file argument for consistence. */ \
101 CHECK_FILE (S, -1); \
102 if (S->_flags & _IO_NO_WRITES) \
103 { \
104 __set_errno (EBADF); \
105 return -1; \
106 } \
107 if (Format == NULL) \
108 { \
109 MAYBE_SET_EINVAL; \
110 return -1; \
111 } \
112 } while (0)
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. */
116 # include <stdio.h>
117 # define PUT(F, S, N) fwrite (S, 1, N, F)
118 # define ARGCHECK(S, Format) \
119 do \
120 { \
121 /* Check file argument for consistence. */ \
122 if (!__validfp (S) || !S->__mode.__write) \
123 { \
124 __set_errno (EBADF); \
125 return -1; \
126 } \
127 if (Format == NULL) \
128 { \
129 __set_errno (EINVAL); \
130 return -1; \
131 } \
132 if (!S->__seen) \
133 { \
134 if (__flshfp (S, EOF) == EOF) \
135 return -1; \
136 } \
137 } \
138 while (0)
139 # define UNBUFFERED_P(s) ((s)->__buffer == NULL)
140
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 */
146
147
148 #define outchar(Ch) \
149 do \
150 { \
151 register const int outc = (Ch); \
152 if (PUTC (outc, s) == EOF) \
153 return -1; \
154 else \
155 ++done; \
156 } \
157 while (0)
158
159 #define outstring(String, Len) \
160 do \
161 { \
162 if ((size_t) PUT (s, (String), (Len)) != (size_t) (Len)) \
163 return -1; \
164 done += (Len); \
165 } \
166 while (0)
167
168 /* For handling long_double and longlong we use the same flag. */
169 #ifndef is_longlong
170 # define is_longlong is_long_double
171 #endif
172
173
174 /* Global variables. */
175 static const char null[] = "(null)";
176
177
178 /* Helper function to provide temporary buffering for unbuffered streams. */
179 static int buffered_vfprintf __P ((FILE *stream, const CHAR_T *fmt, va_list))
180 internal_function;
181
182 /* Handle unknown format specifier. */
183 static int printf_unknown __P ((FILE *, const struct printf_info *,
184 const void *const *));
185
186 /* Group digits of number string. */
187 static char *group_number __P ((CHAR_T *, CHAR_T *, const CHAR_T *, wchar_t))
188 internal_function;
189
190
191 /* The function itself. */
192 int
193 vfprintf (FILE *s, const CHAR_T *format, va_list ap)
194 {
195 /* The character used as thousands separator. */
196 wchar_t thousands_sep;
197
198 /* The string describing the size of groups of digits. */
199 const char *grouping;
200
201 /* Place to accumulate the result. */
202 int done;
203
204 /* Current character in format string. */
205 const UCHAR_T *f;
206
207 /* End of leading constant string. */
208 const UCHAR_T *lead_str_end;
209
210 /* Points to next format specifier. */
211 const UCHAR_T *end_of_spec;
212
213 /* Buffer intermediate results. */
214 char work_buffer[1000];
215 #define workend (&work_buffer[sizeof (work_buffer) - 1])
216
217 /* State for restartable multibyte character handling functions. */
218 mbstate_t mbstate;
219
220 /* We have to save the original argument pointer. */
221 va_list ap_save;
222
223 /* Count number of specifiers we already processed. */
224 int nspecs_done;
225
226 /* For the %m format we may need the current `errno' value. */
227 int save_errno = errno;
228
229
230 /* This table maps a character into a number representing a
231 class. In each step there is a destination label for each
232 class. */
233 static const int jump_table[] =
234 {
235 /* ' ' */ 1, 0, 0, /* '#' */ 4,
236 0, /* '%' */ 14, 0, /* '\''*/ 6,
237 0, 0, /* '*' */ 7, /* '+' */ 2,
238 0, /* '-' */ 3, /* '.' */ 9, 0,
239 /* '0' */ 5, /* '1' */ 8, /* '2' */ 8, /* '3' */ 8,
240 /* '4' */ 8, /* '5' */ 8, /* '6' */ 8, /* '7' */ 8,
241 /* '8' */ 8, /* '9' */ 8, 0, 0,
242 0, 0, 0, 0,
243 0, /* 'A' */ 26, 0, /* 'C' */ 25,
244 0, /* 'E' */ 19, 0, /* 'G' */ 19,
245 0, 0, 0, 0,
246 /* 'L' */ 12, 0, 0, 0,
247 0, 0, 0, /* 'S' */ 21,
248 0, 0, 0, 0,
249 /* 'X' */ 18, 0, /* 'Z' */ 13, 0,
250 0, 0, 0, 0,
251 0, /* 'a' */ 26, 0, /* 'c' */ 20,
252 /* 'd' */ 15, /* 'e' */ 19, /* 'f' */ 19, /* 'g' */ 19,
253 /* 'h' */ 10, /* 'i' */ 15, 0, 0,
254 /* 'l' */ 11, /* 'm' */ 24, /* 'n' */ 23, /* 'o' */ 17,
255 /* 'p' */ 22, /* 'q' */ 12, 0, /* 's' */ 21,
256 0, /* 'u' */ 16, 0, 0,
257 /* 'x' */ 18
258 };
259
260 #define NOT_IN_JUMP_RANGE(Ch) ((Ch) < ' ' || (Ch) > 'x')
261 #define CHAR_CLASS(Ch) (jump_table[(int) (Ch) - ' '])
262 #define JUMP(ChExpr, table) \
263 do \
264 { \
265 const void *ptr; \
266 spec = (ChExpr); \
267 ptr = NOT_IN_JUMP_RANGE (spec) ? REF (form_unknown) \
268 : table[CHAR_CLASS (spec)]; \
269 goto *ptr; \
270 } \
271 while (0)
272
273 #define STEP0_3_TABLE \
274 /* Step 0: at the beginning. */ \
275 static const void *step0_jumps[27] = \
276 { \
277 REF (form_unknown), \
278 REF (flag_space), /* for ' ' */ \
279 REF (flag_plus), /* for '+' */ \
280 REF (flag_minus), /* for '-' */ \
281 REF (flag_hash), /* for '<hash>' */ \
282 REF (flag_zero), /* for '0' */ \
283 REF (flag_quote), /* for '\'' */ \
284 REF (width_asterics), /* for '*' */ \
285 REF (width), /* for '1'...'9' */ \
286 REF (precision), /* for '.' */ \
287 REF (mod_half), /* for 'h' */ \
288 REF (mod_long), /* for 'l' */ \
289 REF (mod_longlong), /* for 'L', 'q' */ \
290 REF (mod_size_t), /* for 'Z' */ \
291 REF (form_percent), /* for '%' */ \
292 REF (form_integer), /* for 'd', 'i' */ \
293 REF (form_unsigned), /* for 'u' */ \
294 REF (form_octal), /* for 'o' */ \
295 REF (form_hexa), /* for 'X', 'x' */ \
296 REF (form_float), /* for 'E', 'e', 'f', 'G', 'g' */ \
297 REF (form_character), /* for 'c' */ \
298 REF (form_string), /* for 's', 'S' */ \
299 REF (form_pointer), /* for 'p' */ \
300 REF (form_number), /* for 'n' */ \
301 REF (form_strerror), /* for 'm' */ \
302 REF (form_wcharacter), /* for 'C' */ \
303 REF (form_floathex) /* for 'A', 'a' */ \
304 }; \
305 /* Step 1: after processing width. */ \
306 static const void *step1_jumps[27] = \
307 { \
308 REF (form_unknown), \
309 REF (form_unknown), /* for ' ' */ \
310 REF (form_unknown), /* for '+' */ \
311 REF (form_unknown), /* for '-' */ \
312 REF (form_unknown), /* for '<hash>' */ \
313 REF (form_unknown), /* for '0' */ \
314 REF (form_unknown), /* for '\'' */ \
315 REF (form_unknown), /* for '*' */ \
316 REF (form_unknown), /* for '1'...'9' */ \
317 REF (precision), /* for '.' */ \
318 REF (mod_half), /* for 'h' */ \
319 REF (mod_long), /* for 'l' */ \
320 REF (mod_longlong), /* for 'L', 'q' */ \
321 REF (mod_size_t), /* for 'Z' */ \
322 REF (form_percent), /* for '%' */ \
323 REF (form_integer), /* for 'd', 'i' */ \
324 REF (form_unsigned), /* for 'u' */ \
325 REF (form_octal), /* for 'o' */ \
326 REF (form_hexa), /* for 'X', 'x' */ \
327 REF (form_float), /* for 'E', 'e', 'f', 'G', 'g' */ \
328 REF (form_character), /* for 'c' */ \
329 REF (form_string), /* for 's', 'S' */ \
330 REF (form_pointer), /* for 'p' */ \
331 REF (form_number), /* for 'n' */ \
332 REF (form_strerror), /* for 'm' */ \
333 REF (form_wcharacter), /* for 'C' */ \
334 REF (form_floathex) /* for 'A', 'a' */ \
335 }; \
336 /* Step 2: after processing precision. */ \
337 static const void *step2_jumps[27] = \
338 { \
339 REF (form_unknown), \
340 REF (form_unknown), /* for ' ' */ \
341 REF (form_unknown), /* for '+' */ \
342 REF (form_unknown), /* for '-' */ \
343 REF (form_unknown), /* for '<hash>' */ \
344 REF (form_unknown), /* for '0' */ \
345 REF (form_unknown), /* for '\'' */ \
346 REF (form_unknown), /* for '*' */ \
347 REF (form_unknown), /* for '1'...'9' */ \
348 REF (form_unknown), /* for '.' */ \
349 REF (mod_half), /* for 'h' */ \
350 REF (mod_long), /* for 'l' */ \
351 REF (mod_longlong), /* for 'L', 'q' */ \
352 REF (mod_size_t), /* for 'Z' */ \
353 REF (form_percent), /* for '%' */ \
354 REF (form_integer), /* for 'd', 'i' */ \
355 REF (form_unsigned), /* for 'u' */ \
356 REF (form_octal), /* for 'o' */ \
357 REF (form_hexa), /* for 'X', 'x' */ \
358 REF (form_float), /* for 'E', 'e', 'f', 'G', 'g' */ \
359 REF (form_character), /* for 'c' */ \
360 REF (form_string), /* for 's', 'S' */ \
361 REF (form_pointer), /* for 'p' */ \
362 REF (form_number), /* for 'n' */ \
363 REF (form_strerror), /* for 'm' */ \
364 REF (form_wcharacter), /* for 'C' */ \
365 REF (form_floathex) /* for 'A', 'a' */ \
366 }; \
367 /* Step 3: after processing first 'l' modifier. */ \
368 static const void *step3_jumps[27] = \
369 { \
370 REF (form_unknown), \
371 REF (form_unknown), /* for ' ' */ \
372 REF (form_unknown), /* for '+' */ \
373 REF (form_unknown), /* for '-' */ \
374 REF (form_unknown), /* for '<hash>' */ \
375 REF (form_unknown), /* for '0' */ \
376 REF (form_unknown), /* for '\'' */ \
377 REF (form_unknown), /* for '*' */ \
378 REF (form_unknown), /* for '1'...'9' */ \
379 REF (form_unknown), /* for '.' */ \
380 REF (form_unknown), /* for 'h' */ \
381 REF (mod_longlong), /* for 'l' */ \
382 REF (form_unknown), /* for 'L', 'q' */ \
383 REF (form_unknown), /* for 'Z' */ \
384 REF (form_percent), /* for '%' */ \
385 REF (form_integer), /* for 'd', 'i' */ \
386 REF (form_unsigned), /* for 'u' */ \
387 REF (form_octal), /* for 'o' */ \
388 REF (form_hexa), /* for 'X', 'x' */ \
389 REF (form_float), /* for 'E', 'e', 'f', 'G', 'g' */ \
390 REF (form_character), /* for 'c' */ \
391 REF (form_string), /* for 's', 'S' */ \
392 REF (form_pointer), /* for 'p' */ \
393 REF (form_number), /* for 'n' */ \
394 REF (form_strerror), /* for 'm' */ \
395 REF (form_wcharacter), /* for 'C' */ \
396 REF (form_floathex) /* for 'A', 'a' */ \
397 }
398
399 #define STEP4_TABLE \
400 /* Step 4: processing format specifier. */ \
401 static const void *step4_jumps[27] = \
402 { \
403 REF (form_unknown), \
404 REF (form_unknown), /* for ' ' */ \
405 REF (form_unknown), /* for '+' */ \
406 REF (form_unknown), /* for '-' */ \
407 REF (form_unknown), /* for '<hash>' */ \
408 REF (form_unknown), /* for '0' */ \
409 REF (form_unknown), /* for '\'' */ \
410 REF (form_unknown), /* for '*' */ \
411 REF (form_unknown), /* for '1'...'9' */ \
412 REF (form_unknown), /* for '.' */ \
413 REF (form_unknown), /* for 'h' */ \
414 REF (form_unknown), /* for 'l' */ \
415 REF (form_unknown), /* for 'L', 'q' */ \
416 REF (form_unknown), /* for 'Z' */ \
417 REF (form_percent), /* for '%' */ \
418 REF (form_integer), /* for 'd', 'i' */ \
419 REF (form_unsigned), /* for 'u' */ \
420 REF (form_octal), /* for 'o' */ \
421 REF (form_hexa), /* for 'X', 'x' */ \
422 REF (form_float), /* for 'E', 'e', 'f', 'G', 'g' */ \
423 REF (form_character), /* for 'c' */ \
424 REF (form_string), /* for 's', 'S' */ \
425 REF (form_pointer), /* for 'p' */ \
426 REF (form_number), /* for 'n' */ \
427 REF (form_strerror), /* for 'm' */ \
428 REF (form_wcharacter), /* for 'C' */ \
429 REF (form_floathex) /* for 'A', 'a' */ \
430 }
431
432
433 #define process_arg(fspec) \
434 /* Start real work. We know about all flags and modifiers and \
435 now process the wanted format specifier. */ \
436 LABEL (form_percent): \
437 /* Write a literal "%". */ \
438 outchar ('%'); \
439 break; \
440 \
441 LABEL (form_integer): \
442 /* Signed decimal integer. */ \
443 base = 10; \
444 \
445 if (is_longlong) \
446 { \
447 long long int signed_number; \
448 \
449 if (fspec == NULL) \
450 signed_number = va_arg (ap, long long int); \
451 else \
452 signed_number = args_value[fspec->data_arg].pa_long_long_int; \
453 \
454 is_negative = signed_number < 0; \
455 number.longlong = is_negative ? (- signed_number) : signed_number; \
456 \
457 goto LABEL (longlong_number); \
458 } \
459 else \
460 { \
461 long int signed_number; \
462 \
463 if (fspec == NULL) \
464 if (is_long) \
465 signed_number = va_arg (ap, long int); \
466 else /* `short int' will be promoted to `int'. */ \
467 signed_number = va_arg (ap, int); \
468 else \
469 if (is_long) \
470 signed_number = args_value[fspec->data_arg].pa_long_int; \
471 else \
472 signed_number = args_value[fspec->data_arg].pa_int; \
473 \
474 is_negative = signed_number < 0; \
475 number.word = is_negative ? (- signed_number) : signed_number; \
476 \
477 goto LABEL (number); \
478 } \
479 /* NOTREACHED */ \
480 \
481 LABEL (form_unsigned): \
482 /* Unsigned decimal integer. */ \
483 base = 10; \
484 goto LABEL (unsigned_number); \
485 /* NOTREACHED */ \
486 \
487 LABEL (form_octal): \
488 /* Unsigned octal integer. */ \
489 base = 8; \
490 goto LABEL (unsigned_number); \
491 /* NOTREACHED */ \
492 \
493 LABEL (form_hexa): \
494 /* Unsigned hexadecimal integer. */ \
495 base = 16; \
496 \
497 LABEL (unsigned_number): /* Unsigned number of base BASE. */ \
498 \
499 /* ANSI specifies the `+' and ` ' flags only for signed \
500 conversions. */ \
501 is_negative = 0; \
502 showsign = 0; \
503 space = 0; \
504 \
505 if (is_longlong) \
506 { \
507 if (fspec == NULL) \
508 number.longlong = va_arg (ap, unsigned long long int); \
509 else \
510 number.longlong = args_value[fspec->data_arg].pa_u_long_long_int; \
511 \
512 LABEL (longlong_number): \
513 if (prec < 0) \
514 /* Supply a default precision if none was given. */ \
515 prec = 1; \
516 else \
517 /* We have to take care for the '0' flag. If a precision \
518 is given it must be ignored. */ \
519 pad = ' '; \
520 \
521 /* If the precision is 0 and the number is 0 nothing has to \
522 be written for the number. */ \
523 if (prec == 0 && number.longlong == 0) \
524 string = workend; \
525 else \
526 { \
527 /* Put the number in WORK. */ \
528 string = _itoa (number.longlong, workend + 1, base, \
529 spec == 'X'); \
530 string -= 1; \
531 if (group && grouping) \
532 string = group_number (string, workend, grouping, \
533 thousands_sep); \
534 } \
535 /* Simply further test for num != 0. */ \
536 number.word = number.longlong != 0; \
537 } \
538 else \
539 { \
540 if (fspec == NULL) \
541 if (is_long) \
542 number.word = va_arg (ap, unsigned long int); \
543 else if (!is_short) \
544 number.word = va_arg (ap, unsigned int); \
545 else \
546 number.word = (unsigned short int) va_arg (ap, unsigned int); \
547 else \
548 if (is_long) \
549 number.word = args_value[fspec->data_arg].pa_u_long_int; \
550 else if (!is_short) \
551 number.word = args_value[fspec->data_arg].pa_u_int; \
552 else \
553 number.word = (unsigned short int) \
554 args_value[fspec->data_arg].pa_u_short_int; \
555 \
556 LABEL (number): \
557 if (prec < 0) \
558 /* Supply a default precision if none was given. */ \
559 prec = 1; \
560 else \
561 /* We have to take care for the '0' flag. If a precision \
562 is given it must be ignored. */ \
563 pad = ' '; \
564 \
565 /* If the precision is 0 and the number is 0 nothing has to \
566 be written for the number. */ \
567 if (prec == 0 && number.word == 0) \
568 string = workend; \
569 else \
570 { \
571 /* Put the number in WORK. */ \
572 string = _itoa_word (number.word, workend + 1, base, \
573 spec == 'X'); \
574 string -= 1; \
575 if (group && grouping) \
576 string = group_number (string, workend, grouping, \
577 thousands_sep); \
578 } \
579 } \
580 \
581 prec -= workend - string; \
582 \
583 if (prec > 0) \
584 /* Add zeros to the precision. */ \
585 while (prec-- > 0) \
586 *string-- = '0'; \
587 else if (number.word != 0 && alt && base == 8) \
588 /* Add octal marker. */ \
589 *string-- = '0'; \
590 \
591 if (!left) \
592 { \
593 width -= workend - string; \
594 \
595 if (number.word != 0 && alt && base == 16) \
596 /* Account for 0X hex marker. */ \
597 width -= 2; \
598 \
599 if (is_negative || showsign || space) \
600 --width; \
601 \
602 if (pad == '0') \
603 { \
604 while (width-- > 0) \
605 *string-- = '0'; \
606 \
607 if (number.word != 0 && alt && base == 16) \
608 { \
609 *string-- = spec; \
610 *string-- = '0'; \
611 } \
612 \
613 if (is_negative) \
614 *string-- = '-'; \
615 else if (showsign) \
616 *string-- = '+'; \
617 else if (space) \
618 *string-- = ' '; \
619 } \
620 else \
621 { \
622 if (number.word != 0 && alt && base == 16) \
623 { \
624 *string-- = spec; \
625 *string-- = '0'; \
626 } \
627 \
628 if (is_negative) \
629 *string-- = '-'; \
630 else if (showsign) \
631 *string-- = '+'; \
632 else if (space) \
633 *string-- = ' '; \
634 \
635 while (width-- > 0) \
636 *string-- = ' '; \
637 } \
638 \
639 outstring (string + 1, workend - string); \
640 \
641 break; \
642 } \
643 else \
644 { \
645 if (number.word != 0 && alt && base == 16) \
646 { \
647 *string-- = spec; \
648 *string-- = '0'; \
649 } \
650 \
651 if (is_negative) \
652 *string-- = '-'; \
653 else if (showsign) \
654 *string-- = '+'; \
655 else if (space) \
656 *string-- = ' '; \
657 \
658 width -= workend - string; \
659 outstring (string + 1, workend - string); \
660 \
661 PAD (' '); \
662 break; \
663 } \
664 \
665 LABEL (form_float): \
666 { \
667 /* Floating-point number. This is handled by printf_fp.c. */ \
668 extern int __printf_fp __P ((FILE *, const struct printf_info *, \
669 const void **const)); \
670 const void *ptr; \
671 int function_done; \
672 \
673 if (fspec == NULL) \
674 { \
675 struct printf_info info = { prec: prec, \
676 width: width, \
677 spec: spec, \
678 is_long_double: is_long_double, \
679 is_short: is_short, \
680 is_long: is_long, \
681 alt: alt, \
682 space: space, \
683 left: left, \
684 showsign: showsign, \
685 group: group, \
686 pad: pad, \
687 extra: 0 }; \
688 \
689 if (is_long_double) \
690 the_arg.pa_long_double = va_arg (ap, long double); \
691 else \
692 the_arg.pa_double = va_arg (ap, double); \
693 ptr = (const void *) &the_arg; \
694 \
695 function_done = __printf_fp (s, &info, &ptr); \
696 } \
697 else \
698 { \
699 ptr = (const void *) &args_value[fspec->data_arg]; \
700 \
701 function_done = __printf_fp (s, &fspec->info, &ptr); \
702 } \
703 \
704 if (function_done < 0) \
705 /* Error in print handler. */ \
706 return -1; \
707 \
708 done += function_done; \
709 } \
710 break; \
711 \
712 LABEL (form_floathex): \
713 { \
714 /* FLoating point number printed as hexadecimal number. */ \
715 extern int __printf_fphex __P ((FILE *, const struct printf_info *, \
716 const void **const)); \
717 const void *ptr; \
718 int function_done; \
719 \
720 if (fspec == NULL) \
721 { \
722 struct printf_info info = { prec: prec, \
723 width: width, \
724 spec: spec, \
725 is_long_double: is_long_double, \
726 is_short: is_short, \
727 is_long: is_long, \
728 alt: alt, \
729 space: space, \
730 left: left, \
731 showsign: showsign, \
732 group: group, \
733 pad: pad, \
734 extra: 0 }; \
735 \
736 if (is_long_double) \
737 the_arg.pa_long_double = va_arg (ap, long double); \
738 else \
739 the_arg.pa_double = va_arg (ap, double); \
740 ptr = (const void *) &the_arg; \
741 \
742 function_done = __printf_fphex (s, &info, &ptr); \
743 } \
744 else \
745 { \
746 ptr = (const void *) &args_value[fspec->data_arg]; \
747 \
748 function_done = __printf_fphex (s, &fspec->info, &ptr); \
749 } \
750 \
751 if (function_done < 0) \
752 /* Error in print handler. */ \
753 return -1; \
754 \
755 done += function_done; \
756 } \
757 break; \
758 \
759 LABEL (form_character): \
760 /* Character. */ \
761 if (is_long) \
762 goto LABEL (form_wcharacter); \
763 --width; /* Account for the character itself. */ \
764 if (!left) \
765 PAD (' '); \
766 if (fspec == NULL) \
767 outchar ((unsigned char) va_arg (ap, int)); /* Promoted. */ \
768 else \
769 outchar ((unsigned char) args_value[fspec->data_arg].pa_char); \
770 if (left) \
771 PAD (' '); \
772 break; \
773 \
774 LABEL (form_wcharacter): \
775 { \
776 /* Wide character. */ \
777 char buf[MB_CUR_MAX]; \
778 mbstate_t mbstate; \
779 size_t len; \
780 \
781 len = __wcrtomb (buf, (fspec == NULL ? va_arg (ap, wint_t) \
782 : args_value[fspec->data_arg].pa_wchar), \
783 &mbstate); \
784 width -= len; \
785 if (!left) \
786 PAD (' '); \
787 outstring (buf, len); \
788 if (left) \
789 PAD (' '); \
790 } \
791 break; \
792 \
793 LABEL (form_string): \
794 { \
795 size_t len; \
796 \
797 /* The string argument could in fact be `char *' or `wchar_t *'. \
798 But this should not make a difference here. */ \
799 if (fspec == NULL) \
800 string = (char *) va_arg (ap, const char *); \
801 else \
802 string = (char *) args_value[fspec->data_arg].pa_string; \
803 \
804 /* Entry point for printing other strings. */ \
805 LABEL (print_string): \
806 \
807 if (string == NULL) \
808 { \
809 /* Write "(null)" if there's space. */ \
810 if (prec == -1 || prec >= (int) sizeof (null) - 1) \
811 { \
812 string = (char *) null; \
813 len = sizeof (null) - 1; \
814 } \
815 else \
816 { \
817 string = (char *) ""; \
818 len = 0; \
819 } \
820 } \
821 else if (!is_long && spec != L_('S')) \
822 { \
823 if (prec != -1) \
824 /* Search for the end of the string, but don't search past \
825 the length specified by the precision. */ \
826 len = strnlen (string, prec); \
827 else \
828 len = strlen (string); \
829 } \
830 else \
831 { \
832 const wchar_t *s2 = (const wchar_t *) string; \
833 mbstate_t mbstate; \
834 \
835 len = __wcsrtombs (NULL, &s2, 0, &mbstate); \
836 if (len == (size_t) -1) \
837 /* Illegal wide-character string. */ \
838 return -1; \
839 \
840 s2 = (const wchar_t *) string; \
841 string = alloca (len + 1); \
842 (void) __wcsrtombs (string, &s2, prec != -1 ? prec : UINT_MAX, \
843 &mbstate); \
844 } \
845 \
846 if ((width -= len) < 0) \
847 { \
848 outstring (string, len); \
849 break; \
850 } \
851 \
852 if (!left) \
853 PAD (' '); \
854 outstring (string, len); \
855 if (left) \
856 PAD (' '); \
857 } \
858 break; \
859 \
860 LABEL (form_pointer): \
861 /* Generic pointer. */ \
862 { \
863 const void *ptr; \
864 if (fspec == NULL) \
865 ptr = va_arg (ap, void *); \
866 else \
867 ptr = args_value[fspec->data_arg].pa_pointer; \
868 if (ptr != NULL) \
869 { \
870 /* If the pointer is not NULL, write it as a %#x spec. */ \
871 base = 16; \
872 number.word = (unsigned long int) ptr; \
873 is_negative = 0; \
874 alt = 1; \
875 group = 0; \
876 spec = 'x'; \
877 goto LABEL (number); \
878 } \
879 else \
880 { \
881 /* Write "(nil)" for a nil pointer. */ \
882 string = (char *) "(nil)"; \
883 /* Make sure the full string "(nil)" is printed. */ \
884 if (prec < 5) \
885 prec = 5; \
886 is_long = 0; /* This is no wide-char string. */ \
887 goto LABEL (print_string); \
888 } \
889 } \
890 /* NOTREACHED */ \
891 \
892 LABEL (form_number): \
893 /* Answer the count of characters written. */ \
894 if (fspec == NULL) \
895 if (is_longlong) \
896 *(long long int *) va_arg (ap, void *) = done; \
897 else if (is_long) \
898 *(long int *) va_arg (ap, void *) = done; \
899 else if (!is_short) \
900 *(int *) va_arg (ap, void *) = done; \
901 else \
902 *(short int *) va_arg (ap, void *) = done; \
903 else \
904 if (is_longlong) \
905 *(long long int *) args_value[fspec->data_arg].pa_pointer = done; \
906 else if (is_long) \
907 *(long int *) args_value[fspec->data_arg].pa_pointer = done; \
908 else if (!is_short) \
909 *(int *) args_value[fspec->data_arg].pa_pointer = done; \
910 else \
911 *(short int *) args_value[fspec->data_arg].pa_pointer = done; \
912 break; \
913 \
914 LABEL (form_strerror): \
915 /* Print description of error ERRNO. */ \
916 { \
917 extern char *_strerror_internal __P ((int, char *buf, size_t)); \
918 \
919 string = (char *) \
920 _strerror_internal (save_errno, work_buffer, sizeof work_buffer); \
921 } \
922 is_long = 0; /* This is no wide-char string. */ \
923 goto LABEL (print_string)
924
925
926 /* Sanity check of arguments. */
927 ARGCHECK (s, format);
928
929 if (UNBUFFERED_P (s))
930 /* Use a helper function which will allocate a local temporary buffer
931 for the stream and then call us again. */
932 return buffered_vfprintf (s, format, ap);
933
934 /* Initialize local variables. */
935 done = 0;
936 grouping = (const char *) -1;
937 #ifdef __va_copy
938 /* This macro will be available soon in gcc's <stdarg.h>. We need it
939 since on some systems `va_list' is not an integral type. */
940 __va_copy (ap_save, ap);
941 #else
942 ap_save = ap;
943 #endif
944 nspecs_done = 0;
945
946 /* Find the first format specifier. */
947 f = lead_str_end = find_spec (format, &mbstate);
948
949 /* Lock stream. */
950 #ifdef USE_IN_LIBIO
951 __libc_cleanup_region_start ((void (*) (void *)) &_IO_funlockfile, s);
952 _IO_flockfile (s);
953 #else
954 __libc_cleanup_region_start ((void (*) (void *)) &__funlockfile, s);
955 __flockfile (s);
956 #endif
957
958 /* Write the literal text before the first format. */
959 outstring ((const UCHAR_T *) format,
960 lead_str_end - (const UCHAR_T *) format);
961
962 /* If we only have to print a simple string, return now. */
963 if (*f == L_('\0'))
964 goto all_done;
965
966 /* Process whole format string. */
967 do
968 {
969 #define REF(Name) &&do_##Name
970 #define LABEL(Name) do_##Name
971 STEP0_3_TABLE;
972 STEP4_TABLE;
973
974 union printf_arg *args_value; /* This is not used here but ... */
975 int is_negative; /* Flag for negative number. */
976 union
977 {
978 unsigned long long int longlong;
979 unsigned long int word;
980 } number;
981 int base;
982 union printf_arg the_arg;
983 char *string; /* Pointer to argument string. */
984 int alt = 0; /* Alternate format. */
985 int space = 0; /* Use space prefix if no sign is needed. */
986 int left = 0; /* Left-justify output. */
987 int showsign = 0; /* Always begin with plus or minus sign. */
988 int group = 0; /* Print numbers according grouping rules. */
989 int is_long_double = 0; /* Argument is long double/ long long int. */
990 int is_short = 0; /* Argument is long int. */
991 int is_long = 0; /* Argument is short int. */
992 int width = 0; /* Width of output; 0 means none specified. */
993 int prec = -1; /* Precision of output; -1 means none specified. */
994 char pad = ' '; /* Padding character. */
995 CHAR_T spec;
996
997 /* Get current character in format string. */
998 JUMP (*++f, step0_jumps);
999
1000 /* ' ' flag. */
1001 LABEL (flag_space):
1002 space = 1;
1003 JUMP (*++f, step0_jumps);
1004
1005 /* '+' flag. */
1006 LABEL (flag_plus):
1007 showsign = 1;
1008 JUMP (*++f, step0_jumps);
1009
1010 /* The '-' flag. */
1011 LABEL (flag_minus):
1012 left = 1;
1013 pad = L_(' ');
1014 JUMP (*++f, step0_jumps);
1015
1016 /* The '#' flag. */
1017 LABEL (flag_hash):
1018 alt = 1;
1019 JUMP (*++f, step0_jumps);
1020
1021 /* The '0' flag. */
1022 LABEL (flag_zero):
1023 if (!left)
1024 pad = L_('0');
1025 JUMP (*++f, step0_jumps);
1026
1027 /* The '\'' flag. */
1028 LABEL (flag_quote):
1029 group = 1;
1030
1031 /* XXX Completely wrong. Use wctob. */
1032 if (grouping == (const char *) -1)
1033 {
1034 /* Figure out the thousands separator character. */
1035 if (mbtowc (&thousands_sep,
1036 _NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP),
1037 strlen (_NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP))) <= 0)
1038 thousands_sep = (wchar_t)
1039 *_NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP);
1040 grouping = _NL_CURRENT (LC_NUMERIC, GROUPING);
1041 if (*grouping == '\0' || *grouping == CHAR_MAX
1042 || thousands_sep == L'\0')
1043 grouping = NULL;
1044 }
1045 JUMP (*++f, step0_jumps);
1046
1047 /* Get width from argument. */
1048 LABEL (width_asterics):
1049 {
1050 const UCHAR_T *tmp; /* Temporary value. */
1051
1052 tmp = ++f;
1053 if (ISDIGIT (*tmp) && read_int (&tmp) && *tmp == L_('$'))
1054 /* The width comes from a positional parameter. */
1055 goto do_positional;
1056
1057 width = va_arg (ap, int);
1058
1059 /* Negative width means left justified. */
1060 if (width < 0)
1061 {
1062 width = -width;
1063 pad = L_(' ');
1064 left = 1;
1065 }
1066 }
1067 JUMP (*f, step1_jumps);
1068
1069 /* Given width in format string. */
1070 LABEL (width):
1071 width = read_int (&f);
1072 if (*f == L_('$'))
1073 /* Oh, oh. The argument comes from a positional parameter. */
1074 goto do_positional;
1075 JUMP (*f, step1_jumps);
1076
1077 LABEL (precision):
1078 ++f;
1079 if (*f == L_('*'))
1080 {
1081 const UCHAR_T *tmp; /* Temporary value. */
1082
1083 tmp = ++f;
1084 if (ISDIGIT (*tmp) && read_int (&tmp) > 0 && *tmp == L_('$'))
1085 /* The precision comes from a positional parameter. */
1086 goto do_positional;
1087
1088 prec = va_arg (ap, int);
1089
1090 /* If the precision is negative the precision is omitted. */
1091 if (prec < 0)
1092 prec = -1;
1093 }
1094 else if (ISDIGIT (*f))
1095 prec = read_int (&f);
1096 else
1097 prec = 0;
1098 JUMP (*f, step2_jumps);
1099
1100 /* Process 'h' modifier. No other modifier is allowed to
1101 follow. */
1102 LABEL (mod_half):
1103 is_short = 1;
1104 JUMP (*++f, step4_jumps);
1105
1106 /* Process 'l' modifier. There might another 'l' follow. */
1107 LABEL (mod_long):
1108 is_long = 1;
1109 JUMP (*++f, step3_jumps);
1110
1111 /* Process 'L', 'q', or 'll' modifier. No other modifier is
1112 allowed to follow. */
1113 LABEL (mod_longlong):
1114 is_long_double = 1;
1115 JUMP (*++f, step4_jumps);
1116
1117 LABEL (mod_size_t):
1118 is_longlong = sizeof (size_t) > sizeof (unsigned long int);
1119 is_long = sizeof (size_t) > sizeof (unsigned int);
1120 JUMP (*++f, step4_jumps);
1121
1122 /* Process current format. */
1123 while (1)
1124 {
1125 process_arg (((struct printf_spec *) NULL));
1126
1127 LABEL (form_unknown):
1128 if (spec == L_('\0'))
1129 {
1130 /* The format string ended before the specifier is complete. */
1131 done = -1;
1132 goto all_done;
1133 }
1134
1135 /* If we are in the fast loop force entering the complicated
1136 one. */
1137 goto do_positional;
1138 }
1139
1140 /* The format is correctly handled. */
1141 ++nspecs_done;
1142
1143 /* Look for next format specifier. */
1144 f = find_spec ((end_of_spec = ++f), &mbstate);
1145
1146 /* Write the following constant string. */
1147 outstring (end_of_spec, f - end_of_spec);
1148 }
1149 while (*f != L_('\0'));
1150
1151 /* Unlock stream and return. */
1152 goto all_done;
1153
1154 /* Here starts the more complex loop to handle positional parameters. */
1155 do_positional:
1156 {
1157 /* Array with information about the needed arguments. This has to
1158 be dynamically extensible. */
1159 size_t nspecs = 0;
1160 size_t nspecs_max = 32; /* A more or less arbitrary start value. */
1161 struct printf_spec *specs
1162 = alloca (nspecs_max * sizeof (struct printf_spec));
1163
1164 /* The number of arguments the format string requests. This will
1165 determine the size of the array needed to store the argument
1166 attributes. */
1167 size_t nargs = 0;
1168 int *args_type;
1169 union printf_arg *args_value;
1170
1171 /* Positional parameters refer to arguments directly. This could
1172 also determine the maximum number of arguments. Track the
1173 maximum number. */
1174 size_t max_ref_arg = 0;
1175
1176 /* Just a counter. */
1177 size_t cnt;
1178
1179
1180 if (grouping == (const char *) -1)
1181 {
1182 /* XXX Use wctob. But this is incompatible for now. */
1183 /* Figure out the thousands separator character. */
1184 if (mbtowc (&thousands_sep,
1185 _NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP),
1186 strlen (_NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP))) <= 0)
1187 thousands_sep = (wchar_t) *_NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP);
1188 grouping = _NL_CURRENT (LC_NUMERIC, GROUPING);
1189 if (*grouping == '\0' || *grouping == CHAR_MAX
1190 || thousands_sep == L'\0')
1191 grouping = NULL;
1192 }
1193
1194 for (f = lead_str_end; *f != '\0'; f = specs[nspecs++].next_fmt)
1195 {
1196 if (nspecs >= nspecs_max)
1197 {
1198 /* Extend the array of format specifiers. */
1199 struct printf_spec *old = specs;
1200
1201 nspecs_max *= 2;
1202 specs = alloca (nspecs_max * sizeof (struct printf_spec));
1203
1204 if (specs == &old[nspecs])
1205 /* Stack grows up, OLD was the last thing allocated;
1206 extend it. */
1207 nspecs_max += nspecs_max / 2;
1208 else
1209 {
1210 /* Copy the old array's elements to the new space. */
1211 memcpy (specs, old, nspecs * sizeof (struct printf_spec));
1212 if (old == &specs[nspecs])
1213 /* Stack grows down, OLD was just below the new
1214 SPECS. We can use that space when the new space
1215 runs out. */
1216 nspecs_max += nspecs_max / 2;
1217 }
1218 }
1219
1220 /* Parse the format specifier. */
1221 nargs += parse_one_spec (f, nargs, &specs[nspecs], &max_ref_arg,
1222 &mbstate);
1223 }
1224
1225 /* Determine the number of arguments the format string consumes. */
1226 nargs = MAX (nargs, max_ref_arg);
1227
1228 /* Allocate memory for the argument descriptions. */
1229 args_type = alloca (nargs * sizeof (int));
1230 memset (args_type, 0, nargs * sizeof (int));
1231 args_value = alloca (nargs * sizeof (union printf_arg));
1232
1233 /* XXX Could do sanity check here: If any element in ARGS_TYPE is
1234 still zero after this loop, format is invalid. For now we
1235 simply use 0 as the value. */
1236
1237 /* Fill in the types of all the arguments. */
1238 for (cnt = 0; cnt < nspecs; ++cnt)
1239 {
1240 /* If the width is determined by an argument this is an int. */
1241 if (specs[cnt].width_arg != -1)
1242 args_type[specs[cnt].width_arg] = PA_INT;
1243
1244 /* If the precision is determined by an argument this is an int. */
1245 if (specs[cnt].prec_arg != -1)
1246 args_type[specs[cnt].prec_arg] = PA_INT;
1247
1248 switch (specs[cnt].ndata_args)
1249 {
1250 case 0: /* No arguments. */
1251 break;
1252 case 1: /* One argument; we already have the type. */
1253 args_type[specs[cnt].data_arg] = specs[cnt].data_arg_type;
1254 break;
1255 default:
1256 /* We have more than one argument for this format spec.
1257 We must call the arginfo function again to determine
1258 all the types. */
1259 (void) (*__printf_arginfo_table[specs[cnt].info.spec])
1260 (&specs[cnt].info,
1261 specs[cnt].ndata_args, &args_type[specs[cnt].data_arg]);
1262 break;
1263 }
1264 }
1265
1266 /* Now we know all the types and the order. Fill in the argument
1267 values. */
1268 for (cnt = 0; cnt < nargs; ++cnt)
1269 switch (args_type[cnt])
1270 {
1271 #define T(tag, mem, type) \
1272 case tag: \
1273 args_value[cnt].mem = va_arg (ap_save, type); \
1274 break
1275
1276 T (PA_CHAR, pa_char, int); /* Promoted. */
1277 T (PA_WCHAR, pa_wchar, wint_t);
1278 T (PA_INT|PA_FLAG_SHORT, pa_short_int, int); /* Promoted. */
1279 T (PA_INT, pa_int, int);
1280 T (PA_INT|PA_FLAG_LONG, pa_long_int, long int);
1281 T (PA_INT|PA_FLAG_LONG_LONG, pa_long_long_int, long long int);
1282 T (PA_FLOAT, pa_float, double); /* Promoted. */
1283 T (PA_DOUBLE, pa_double, double);
1284 T (PA_DOUBLE|PA_FLAG_LONG_DOUBLE, pa_long_double, long double);
1285 T (PA_STRING, pa_string, const char *);
1286 T (PA_WSTRING, pa_wstring, const wchar_t *);
1287 T (PA_POINTER, pa_pointer, void *);
1288 #undef T
1289 default:
1290 if ((args_type[cnt] & PA_FLAG_PTR) != 0)
1291 args_value[cnt].pa_pointer = va_arg (ap_save, void *);
1292 else
1293 args_value[cnt].pa_long_double = 0.0;
1294 break;
1295 }
1296
1297 /* Now walk through all format specifiers and process them. */
1298 for (; (size_t) nspecs_done < nspecs; ++nspecs_done)
1299 {
1300 #undef REF
1301 #define REF(Name) &&do2_##Name
1302 #undef LABEL
1303 #define LABEL(Name) do2_##Name
1304 STEP4_TABLE;
1305
1306 int is_negative;
1307 union
1308 {
1309 unsigned long long int longlong;
1310 unsigned long int word;
1311 } number;
1312 int base;
1313 union printf_arg the_arg;
1314 char *string; /* Pointer to argument string. */
1315
1316 /* Fill variables from values in struct. */
1317 int alt = specs[nspecs_done].info.alt;
1318 int space = specs[nspecs_done].info.space;
1319 int left = specs[nspecs_done].info.left;
1320 int showsign = specs[nspecs_done].info.showsign;
1321 int group = specs[nspecs_done].info.group;
1322 int is_long_double = specs[nspecs_done].info.is_long_double;
1323 int is_short = specs[nspecs_done].info.is_short;
1324 int is_long = specs[nspecs_done].info.is_long;
1325 int width = specs[nspecs_done].info.width;
1326 int prec = specs[nspecs_done].info.prec;
1327 char pad = specs[nspecs_done].info.pad;
1328 CHAR_T spec = specs[nspecs_done].info.spec;
1329
1330 /* Fill in last information. */
1331 if (specs[nspecs_done].width_arg != -1)
1332 {
1333 /* Extract the field width from an argument. */
1334 specs[nspecs_done].info.width =
1335 args_value[specs[nspecs_done].width_arg].pa_int;
1336
1337 if (specs[nspecs_done].info.width < 0)
1338 /* If the width value is negative left justification is
1339 selected and the value is taken as being positive. */
1340 {
1341 specs[nspecs_done].info.width *= -1;
1342 left = specs[nspecs_done].info.left = 1;
1343 }
1344 width = specs[nspecs_done].info.width;
1345 }
1346
1347 if (specs[nspecs_done].prec_arg != -1)
1348 {
1349 /* Extract the precision from an argument. */
1350 specs[nspecs_done].info.prec =
1351 args_value[specs[nspecs_done].prec_arg].pa_int;
1352
1353 if (specs[nspecs_done].info.prec < 0)
1354 /* If the precision is negative the precision is
1355 omitted. */
1356 specs[nspecs_done].info.prec = -1;
1357
1358 prec = specs[nspecs_done].info.prec;
1359 }
1360
1361 /* Process format specifiers. */
1362 while (1)
1363 {
1364 JUMP (spec, step4_jumps);
1365
1366 process_arg ((&specs[nspecs_done]));
1367
1368 LABEL (form_unknown):
1369 {
1370 extern printf_function **__printf_function_table;
1371 int function_done;
1372 printf_function *function;
1373 unsigned int i;
1374 const void **ptr;
1375
1376 function =
1377 (__printf_function_table == NULL ? NULL :
1378 __printf_function_table[specs[nspecs_done].info.spec]);
1379
1380 if (function == NULL)
1381 function = &printf_unknown;
1382
1383 ptr = alloca (specs[nspecs_done].ndata_args
1384 * sizeof (const void *));
1385
1386 /* Fill in an array of pointers to the argument values. */
1387 for (i = 0; i < specs[nspecs_done].ndata_args; ++i)
1388 ptr[i] = &args_value[specs[nspecs_done].data_arg + i];
1389
1390 /* Call the function. */
1391 function_done = (*function) (s, &specs[nspecs_done].info, ptr);
1392
1393 /* If an error occurred we don't have information about #
1394 of chars. */
1395 if (function_done < 0)
1396 {
1397 done = -1;
1398 goto all_done;
1399 }
1400
1401 done += function_done;
1402 }
1403 break;
1404 }
1405
1406 /* Write the following constant string. */
1407 outstring (specs[nspecs_done].end_of_fmt,
1408 specs[nspecs_done].next_fmt
1409 - specs[nspecs_done].end_of_fmt);
1410 }
1411 }
1412
1413 all_done:
1414 /* Unlock the stream. */
1415 __libc_cleanup_region_end (1);
1416
1417 return done;
1418 }
1419
1420 #ifdef USE_IN_LIBIO
1421 # undef vfprintf
1422 # ifdef strong_alias
1423 /* This is for glibc. */
1424 strong_alias (_IO_vfprintf, vfprintf);
1425 # else
1426 # if defined __ELF__ || defined __GNU_LIBRARY__
1427 # include <gnu-stabs.h>
1428 # ifdef weak_alias
1429 weak_alias (_IO_vfprintf, vfprintf);
1430 # endif
1431 # endif
1432 # endif
1433 #endif
1434 \f
1435 /* Handle an unknown format specifier. This prints out a canonicalized
1436 representation of the format spec itself. */
1437 static int
1438 printf_unknown (FILE *s, const struct printf_info *info,
1439 const void *const *args)
1440
1441 {
1442 int done = 0;
1443 char work_buffer[BUFSIZ];
1444 register char *w;
1445
1446 outchar ('%');
1447
1448 if (info->alt)
1449 outchar ('#');
1450 if (info->group)
1451 outchar ('\'');
1452 if (info->showsign)
1453 outchar ('+');
1454 else if (info->space)
1455 outchar (' ');
1456 if (info->left)
1457 outchar ('-');
1458 if (info->pad == '0')
1459 outchar ('0');
1460
1461 if (info->width != 0)
1462 {
1463 w = _itoa_word (info->width, workend + 1, 10, 0);
1464 while (w <= workend)
1465 outchar (*w++);
1466 }
1467
1468 if (info->prec != -1)
1469 {
1470 outchar ('.');
1471 w = _itoa_word (info->prec, workend + 1, 10, 0);
1472 while (w <= workend)
1473 outchar (*w++);
1474 }
1475
1476 if (info->spec != '\0')
1477 outchar (info->spec);
1478
1479 return done;
1480 }
1481 \f
1482 /* Group the digits according to the grouping rules of the current locale.
1483 The interpretation of GROUPING is as in `struct lconv' from <locale.h>. */
1484 static char *
1485 internal_function
1486 group_number (CHAR_T *w, CHAR_T *rear_ptr, const CHAR_T *grouping,
1487 wchar_t thousands_sep)
1488 {
1489 int len;
1490 char *src, *s;
1491
1492 /* We treat all negative values like CHAR_MAX. */
1493
1494 if (*grouping == CHAR_MAX || *grouping <= 0)
1495 /* No grouping should be done. */
1496 return w;
1497
1498 len = *grouping;
1499
1500 /* Copy existing string so that nothing gets overwritten. */
1501 src = (char *) alloca (rear_ptr - w);
1502 memcpy (src, w + 1, rear_ptr - w);
1503 s = &src[rear_ptr - w - 1];
1504 w = rear_ptr;
1505
1506 /* Process all characters in the string. */
1507 while (s >= src)
1508 {
1509 *w-- = *s--;
1510
1511 if (--len == 0 && s >= src)
1512 {
1513 /* A new group begins. */
1514 *w-- = thousands_sep;
1515
1516 len = *grouping++;
1517 if (*grouping == '\0')
1518 /* The previous grouping repeats ad infinitum. */
1519 --grouping;
1520 else if (*grouping == CHAR_MAX
1521 #if CHAR_MIN < 0
1522 || *grouping < 0
1523 #endif
1524 )
1525 {
1526 /* No further grouping to be done.
1527 Copy the rest of the number. */
1528 do
1529 *w-- = *s--;
1530 while (s >= src);
1531 break;
1532 }
1533 }
1534 }
1535 return w;
1536 }
1537 \f
1538 #ifdef USE_IN_LIBIO
1539 /* Helper "class" for `fprintf to unbuffered': creates a temporary buffer. */
1540 struct helper_file
1541 {
1542 struct _IO_FILE_plus _f;
1543 _IO_FILE *_put_stream;
1544 #ifdef _IO_MTSAFE_IO
1545 _IO_lock_t lock;
1546 #endif
1547 };
1548
1549 static int
1550 _IO_helper_overflow (_IO_FILE *s, int c)
1551 {
1552 _IO_FILE *target = ((struct helper_file*) s)->_put_stream;
1553 int used = s->_IO_write_ptr - s->_IO_write_base;
1554 if (used)
1555 {
1556 _IO_size_t written = _IO_sputn (target, s->_IO_write_base, used);
1557 s->_IO_write_ptr -= written;
1558 }
1559 return PUTC (c, s);
1560 }
1561
1562 static const struct _IO_jump_t _IO_helper_jumps =
1563 {
1564 JUMP_INIT_DUMMY,
1565 JUMP_INIT (finish, _IO_default_finish),
1566 JUMP_INIT (overflow, _IO_helper_overflow),
1567 JUMP_INIT (underflow, _IO_default_underflow),
1568 JUMP_INIT (uflow, _IO_default_uflow),
1569 JUMP_INIT (pbackfail, _IO_default_pbackfail),
1570 JUMP_INIT (xsputn, _IO_default_xsputn),
1571 JUMP_INIT (xsgetn, _IO_default_xsgetn),
1572 JUMP_INIT (seekoff, _IO_default_seekoff),
1573 JUMP_INIT (seekpos, _IO_default_seekpos),
1574 JUMP_INIT (setbuf, _IO_default_setbuf),
1575 JUMP_INIT (sync, _IO_default_sync),
1576 JUMP_INIT (doallocate, _IO_default_doallocate),
1577 JUMP_INIT (read, _IO_default_read),
1578 JUMP_INIT (write, _IO_default_write),
1579 JUMP_INIT (seek, _IO_default_seek),
1580 JUMP_INIT (close, _IO_default_close),
1581 JUMP_INIT (stat, _IO_default_stat)
1582 };
1583
1584 static int
1585 internal_function
1586 buffered_vfprintf (register _IO_FILE *s, const CHAR_T *format,
1587 _IO_va_list args)
1588 {
1589 char buf[_IO_BUFSIZ];
1590 struct helper_file helper;
1591 register _IO_FILE *hp = (_IO_FILE *) &helper;
1592 int result, to_flush;
1593
1594 /* Initialize helper. */
1595 helper._put_stream = s;
1596 hp->_IO_write_base = buf;
1597 hp->_IO_write_ptr = buf;
1598 hp->_IO_write_end = buf + sizeof buf;
1599 hp->_IO_file_flags = _IO_MAGIC|_IO_NO_READS;
1600 #ifdef _IO_MTSAFE_IO
1601 hp->_lock = &helper.lock;
1602 __libc_lock_init (*hp->_lock);
1603 #endif
1604 _IO_JUMPS (hp) = (struct _IO_jump_t *) &_IO_helper_jumps;
1605
1606 /* Now print to helper instead. */
1607 result = _IO_vfprintf (hp, format, args);
1608
1609 /* Now flush anything from the helper to the S. */
1610 if ((to_flush = hp->_IO_write_ptr - hp->_IO_write_base) > 0)
1611 {
1612 if ((int) _IO_sputn (s, hp->_IO_write_base, to_flush) != to_flush)
1613 return -1;
1614 }
1615
1616 return result;
1617 }
1618
1619 #else /* !USE_IN_LIBIO */
1620
1621 static int
1622 internal_function
1623 buffered_vfprintf (register FILE *s, const CHAR_T *format, va_list args)
1624 {
1625 char buf[BUFSIZ];
1626 int result;
1627
1628 s->__bufp = s->__buffer = buf;
1629 s->__bufsize = sizeof buf;
1630 s->__put_limit = s->__buffer + s->__bufsize;
1631 s->__get_limit = s->__buffer;
1632
1633 /* Now use buffer to print. */
1634 result = vfprintf (s, format, args);
1635
1636 if (fflush (s) == EOF)
1637 result = -1;
1638 s->__buffer = s->__bufp = s->__get_limit = s->__put_limit = NULL;
1639 s->__bufsize = 0;
1640
1641 return result;
1642 }
1643 \f
1644 /* Pads string with given number of a specified character.
1645 This code is taken from iopadn.c of the GNU I/O library. */
1646 #define PADSIZE 16
1647 static const CHAR_T blanks[PADSIZE] =
1648 { L_(' '), L_(' '), L_(' '), L_(' '), L_(' '), L_(' '), L_(' '), L_(' '),
1649 L_(' '), L_(' '), L_(' '), L_(' '), L_(' '), L_(' '), L_(' '), L_(' ') };
1650 static const CHAR_T zeroes[PADSIZE] =
1651 { L_('0'), L_('0'), L_('0'), L_('0'), L_('0'), L_('0'), L_('0'), L_('0'),
1652 L_('0'), L_('0'), L_('0'), L_('0'), L_('0'), L_('0'), L_('0'), L_('0') };
1653
1654 ssize_t
1655 #ifndef COMPILE_WPRINTF
1656 __printf_pad (FILE *s, char pad, size_t count)
1657 #else
1658 __wprintf_pad (FILE *s, wchar_t pad, size_t count)
1659 #endif
1660 {
1661 const CHAR_T *padptr;
1662 register size_t i;
1663
1664 padptr = pad == L_(' ') ? blanks : zeroes;
1665
1666 for (i = count; i >= PADSIZE; i -= PADSIZE)
1667 if (PUT (s, padptr, PADSIZE) != PADSIZE)
1668 return -1;
1669 if (i > 0)
1670 if (PUT (s, padptr, i) != i)
1671 return -1;
1672
1673 return count;
1674 }
1675 #undef PADSIZE
1676 #endif /* USE_IN_LIBIO */
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