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1997-05-08 07:53 H.J. Lu <hjl@gnu.ai.mit.edu>
[glibc.git] / stdio-common / vfprintf.c
blob856c65dbb5b6d276ba817e4e264b61cd8e1028af
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 <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
181 /* Handle unknown format specifier. */
182 static int printf_unknown __P ((FILE *, const struct printf_info *,
183 const void *const *));
184
185 /* Group digits of number string. */
186 static char *group_number __P ((CHAR_T *, CHAR_T *, const CHAR_T *, wchar_t));
187
188
189 /* The function itself. */
190 int
191 vfprintf (FILE *s, const CHAR_T *format, va_list ap)
192 {
193 /* The character used as thousands separator. */
194 wchar_t thousands_sep;
195
196 /* The string describing the size of groups of digits. */
197 const char *grouping;
198
199 /* Place to accumulate the result. */
200 int done;
201
202 /* Current character in format string. */
203 const UCHAR_T *f;
204
205 /* End of leading constant string. */
206 const UCHAR_T *lead_str_end;
207
208 /* Points to next format specifier. */
209 const UCHAR_T *end_of_spec;
210
211 /* Buffer intermediate results. */
212 char work_buffer[1000];
213 #define workend (&work_buffer[sizeof (work_buffer) - 1])
214
215 /* State for restartable multibyte character handling functions. */
216 mbstate_t mbstate;
217
218 /* We have to save the original argument pointer. */
219 va_list ap_save;
220
221 /* Count number of specifiers we already processed. */
222 int nspecs_done;
223
224 /* For the %m format we may need the current `errno' value. */
225 int save_errno = errno;
226
227
228 /* This table maps a character into a number representing a
229 class. In each step there is a destination label for each
230 class. */
231 static const int jump_table[] =
232 {
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,
240 0, 0, 0, 0,
241 0, /* 'A' */ 26, 0, /* 'C' */ 25,
242 0, /* 'E' */ 19, 0, /* 'G' */ 19,
243 0, 0, 0, 0,
244 /* 'L' */ 12, 0, 0, 0,
245 0, 0, 0, /* 'S' */ 21,
246 0, 0, 0, 0,
247 /* 'X' */ 18, 0, /* 'Z' */ 13, 0,
248 0, 0, 0, 0,
249 0, /* 'a' */ 26, 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,
255 /* 'x' */ 18
256 };
257
258 #define NOT_IN_JUMP_RANGE(Ch) ((Ch) < ' ' || (Ch) > 'x')
259 #define CHAR_CLASS(Ch) (jump_table[(int) (Ch) - ' '])
260 #define JUMP(ChExpr, table) \
261 do \
262 { \
263 const void *ptr; \
264 spec = (ChExpr); \
265 ptr = NOT_IN_JUMP_RANGE (spec) ? REF (form_unknown) \
266 : table[CHAR_CLASS (spec)]; \
267 goto *ptr; \
268 } \
269 while (0)
270
271 #define STEP0_3_TABLE \
272 /* Step 0: at the beginning. */ \
273 static const void *step0_jumps[27] = \
274 { \
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' */ \
301 REF (form_floathex) /* for 'A', 'a' */ \
302 }; \
303 /* Step 1: after processing width. */ \
304 static const void *step1_jumps[27] = \
305 { \
306 REF (form_unknown), \
307 REF (form_unknown), /* for ' ' */ \
308 REF (form_unknown), /* for '+' */ \
309 REF (form_unknown), /* for '-' */ \
310 REF (form_unknown), /* for '<hash>' */ \
311 REF (form_unknown), /* for '0' */ \
312 REF (form_unknown), /* for '\'' */ \
313 REF (form_unknown), /* for '*' */ \
314 REF (form_unknown), /* for '1'...'9' */ \
315 REF (precision), /* for '.' */ \
316 REF (mod_half), /* for 'h' */ \
317 REF (mod_long), /* for 'l' */ \
318 REF (mod_longlong), /* for 'L', 'q' */ \
319 REF (mod_size_t), /* for 'Z' */ \
320 REF (form_percent), /* for '%' */ \
321 REF (form_integer), /* for 'd', 'i' */ \
322 REF (form_unsigned), /* for 'u' */ \
323 REF (form_octal), /* for 'o' */ \
324 REF (form_hexa), /* for 'X', 'x' */ \
325 REF (form_float), /* for 'E', 'e', 'f', 'G', 'g' */ \
326 REF (form_character), /* for 'c' */ \
327 REF (form_string), /* for 's', 'S' */ \
328 REF (form_pointer), /* for 'p' */ \
329 REF (form_number), /* for 'n' */ \
330 REF (form_strerror), /* for 'm' */ \
331 REF (form_wcharacter), /* for 'C' */ \
332 REF (form_floathex) /* for 'A', 'a' */ \
333 }; \
334 /* Step 2: after processing precision. */ \
335 static const void *step2_jumps[27] = \
336 { \
337 REF (form_unknown), \
338 REF (form_unknown), /* for ' ' */ \
339 REF (form_unknown), /* for '+' */ \
340 REF (form_unknown), /* for '-' */ \
341 REF (form_unknown), /* for '<hash>' */ \
342 REF (form_unknown), /* for '0' */ \
343 REF (form_unknown), /* for '\'' */ \
344 REF (form_unknown), /* for '*' */ \
345 REF (form_unknown), /* for '1'...'9' */ \
346 REF (form_unknown), /* for '.' */ \
347 REF (mod_half), /* for 'h' */ \
348 REF (mod_long), /* for 'l' */ \
349 REF (mod_longlong), /* for 'L', 'q' */ \
350 REF (mod_size_t), /* for 'Z' */ \
351 REF (form_percent), /* for '%' */ \
352 REF (form_integer), /* for 'd', 'i' */ \
353 REF (form_unsigned), /* for 'u' */ \
354 REF (form_octal), /* for 'o' */ \
355 REF (form_hexa), /* for 'X', 'x' */ \
356 REF (form_float), /* for 'E', 'e', 'f', 'G', 'g' */ \
357 REF (form_character), /* for 'c' */ \
358 REF (form_string), /* for 's', 'S' */ \
359 REF (form_pointer), /* for 'p' */ \
360 REF (form_number), /* for 'n' */ \
361 REF (form_strerror), /* for 'm' */ \
362 REF (form_wcharacter), /* for 'C' */ \
363 REF (form_floathex) /* for 'A', 'a' */ \
364 }; \
365 /* Step 3: after processing first 'l' modifier. */ \
366 static const void *step3_jumps[27] = \
367 { \
368 REF (form_unknown), \
369 REF (form_unknown), /* for ' ' */ \
370 REF (form_unknown), /* for '+' */ \
371 REF (form_unknown), /* for '-' */ \
372 REF (form_unknown), /* for '<hash>' */ \
373 REF (form_unknown), /* for '0' */ \
374 REF (form_unknown), /* for '\'' */ \
375 REF (form_unknown), /* for '*' */ \
376 REF (form_unknown), /* for '1'...'9' */ \
377 REF (form_unknown), /* for '.' */ \
378 REF (form_unknown), /* for 'h' */ \
379 REF (mod_longlong), /* for 'l' */ \
380 REF (form_unknown), /* for 'L', 'q' */ \
381 REF (form_unknown), /* for 'Z' */ \
382 REF (form_percent), /* for '%' */ \
383 REF (form_integer), /* for 'd', 'i' */ \
384 REF (form_unsigned), /* for 'u' */ \
385 REF (form_octal), /* for 'o' */ \
386 REF (form_hexa), /* for 'X', 'x' */ \
387 REF (form_float), /* for 'E', 'e', 'f', 'G', 'g' */ \
388 REF (form_character), /* for 'c' */ \
389 REF (form_string), /* for 's', 'S' */ \
390 REF (form_pointer), /* for 'p' */ \
391 REF (form_number), /* for 'n' */ \
392 REF (form_strerror), /* for 'm' */ \
393 REF (form_wcharacter), /* for 'C' */ \
394 REF (form_floathex) /* for 'A', 'a' */ \
395 }
396
397 #define STEP4_TABLE \
398 /* Step 4: processing format specifier. */ \
399 static const void *step4_jumps[27] = \
400 { \
401 REF (form_unknown), \
402 REF (form_unknown), /* for ' ' */ \
403 REF (form_unknown), /* for '+' */ \
404 REF (form_unknown), /* for '-' */ \
405 REF (form_unknown), /* for '<hash>' */ \
406 REF (form_unknown), /* for '0' */ \
407 REF (form_unknown), /* for '\'' */ \
408 REF (form_unknown), /* for '*' */ \
409 REF (form_unknown), /* for '1'...'9' */ \
410 REF (form_unknown), /* for '.' */ \
411 REF (form_unknown), /* for 'h' */ \
412 REF (form_unknown), /* for 'l' */ \
413 REF (form_unknown), /* for 'L', 'q' */ \
414 REF (form_unknown), /* for 'Z' */ \
415 REF (form_percent), /* for '%' */ \
416 REF (form_integer), /* for 'd', 'i' */ \
417 REF (form_unsigned), /* for 'u' */ \
418 REF (form_octal), /* for 'o' */ \
419 REF (form_hexa), /* for 'X', 'x' */ \
420 REF (form_float), /* for 'E', 'e', 'f', 'G', 'g' */ \
421 REF (form_character), /* for 'c' */ \
422 REF (form_string), /* for 's', 'S' */ \
423 REF (form_pointer), /* for 'p' */ \
424 REF (form_number), /* for 'n' */ \
425 REF (form_strerror), /* for 'm' */ \
426 REF (form_wcharacter), /* for 'C' */ \
427 REF (form_floathex) /* for 'A', 'a' */ \
428 }
429
430
431 #define process_arg(fspec) \
432 /* Start real work. We know about all flags and modifiers and \
433 now process the wanted format specifier. */ \
434 LABEL (form_percent): \
435 /* Write a literal "%". */ \
436 outchar ('%'); \
437 break; \
438 \
439 LABEL (form_integer): \
440 /* Signed decimal integer. */ \
441 base = 10; \
442 \
443 if (is_longlong) \
444 { \
445 long long int signed_number; \
446 \
447 if (fspec == NULL) \
448 signed_number = va_arg (ap, long long int); \
449 else \
450 signed_number = args_value[fspec->data_arg].pa_long_long_int; \
451 \
452 is_negative = signed_number < 0; \
453 number.longlong = is_negative ? (- signed_number) : signed_number; \
454 \
455 goto LABEL (longlong_number); \
456 } \
457 else \
458 { \
459 long int signed_number; \
460 \
461 if (fspec == NULL) \
462 if (is_long) \
463 signed_number = va_arg (ap, long int); \
464 else /* `short int' will be promoted to `int'. */ \
465 signed_number = va_arg (ap, int); \
466 else \
467 if (is_long) \
468 signed_number = args_value[fspec->data_arg].pa_long_int; \
469 else \
470 signed_number = args_value[fspec->data_arg].pa_int; \
471 \
472 is_negative = signed_number < 0; \
473 number.word = is_negative ? (- signed_number) : signed_number; \
474 \
475 goto LABEL (number); \
476 } \
477 /* NOTREACHED */ \
478 \
479 LABEL (form_unsigned): \
480 /* Unsigned decimal integer. */ \
481 base = 10; \
482 goto LABEL (unsigned_number); \
483 /* NOTREACHED */ \
484 \
485 LABEL (form_octal): \
486 /* Unsigned octal integer. */ \
487 base = 8; \
488 goto LABEL (unsigned_number); \
489 /* NOTREACHED */ \
490 \
491 LABEL (form_hexa): \
492 /* Unsigned hexadecimal integer. */ \
493 base = 16; \
494 \
495 LABEL (unsigned_number): /* Unsigned number of base BASE. */ \
496 \
497 /* ANSI specifies the `+' and ` ' flags only for signed \
498 conversions. */ \
499 is_negative = 0; \
500 showsign = 0; \
501 space = 0; \
502 \
503 if (is_longlong) \
504 { \
505 if (fspec == NULL) \
506 number.longlong = va_arg (ap, unsigned long long int); \
507 else \
508 number.longlong = args_value[fspec->data_arg].pa_u_long_long_int; \
509 \
510 LABEL (longlong_number): \
511 if (prec < 0) \
512 /* Supply a default precision if none was given. */ \
513 prec = 1; \
514 else \
515 /* We have to take care for the '0' flag. If a precision \
516 is given it must be ignored. */ \
517 pad = ' '; \
518 \
519 /* If the precision is 0 and the number is 0 nothing has to \
520 be written for the number. */ \
521 if (prec == 0 && number.longlong == 0) \
522 string = workend; \
523 else \
524 { \
525 /* Put the number in WORK. */ \
526 string = _itoa (number.longlong, workend + 1, base, \
527 spec == 'X'); \
528 string -= 1; \
529 if (group && grouping) \
530 string = group_number (string, workend, grouping, \
531 thousands_sep); \
532 } \
533 /* Simply further test for num != 0. */ \
534 number.word = number.longlong != 0; \
535 } \
536 else \
537 { \
538 if (fspec == NULL) \
539 if (is_long) \
540 number.word = va_arg (ap, unsigned long int); \
541 else if (!is_short) \
542 number.word = va_arg (ap, unsigned int); \
543 else \
544 number.word = (unsigned short int) va_arg (ap, unsigned int); \
545 else \
546 if (is_long) \
547 number.word = args_value[fspec->data_arg].pa_u_long_int; \
548 else if (!is_short) \
549 number.word = args_value[fspec->data_arg].pa_u_int; \
550 else \
551 number.word = (unsigned short int) \
552 args_value[fspec->data_arg].pa_u_short_int; \
553 \
554 LABEL (number): \
555 if (prec < 0) \
556 /* Supply a default precision if none was given. */ \
557 prec = 1; \
558 else \
559 /* We have to take care for the '0' flag. If a precision \
560 is given it must be ignored. */ \
561 pad = ' '; \
562 \
563 /* If the precision is 0 and the number is 0 nothing has to \
564 be written for the number. */ \
565 if (prec == 0 && number.word == 0) \
566 string = workend; \
567 else \
568 { \
569 /* Put the number in WORK. */ \
570 string = _itoa_word (number.word, workend + 1, base, \
571 spec == 'X'); \
572 string -= 1; \
573 if (group && grouping) \
574 string = group_number (string, workend, grouping, \
575 thousands_sep); \
576 } \
577 } \
578 \
579 prec -= workend - string; \
580 \
581 if (prec > 0) \
582 /* Add zeros to the precision. */ \
583 while (prec-- > 0) \
584 *string-- = '0'; \
585 else if (number.word != 0 && alt && base == 8) \
586 /* Add octal marker. */ \
587 *string-- = '0'; \
588 \
589 if (!left) \
590 { \
591 width -= workend - string; \
592 \
593 if (number.word != 0 && alt && base == 16) \
594 /* Account for 0X hex marker. */ \
595 width -= 2; \
596 \
597 if (is_negative || showsign || space) \
598 --width; \
599 \
600 if (pad == '0') \
601 { \
602 while (width-- > 0) \
603 *string-- = '0'; \
604 \
605 if (number.word != 0 && alt && base == 16) \
606 { \
607 *string-- = spec; \
608 *string-- = '0'; \
609 } \
610 \
611 if (is_negative) \
612 *string-- = '-'; \
613 else if (showsign) \
614 *string-- = '+'; \
615 else if (space) \
616 *string-- = ' '; \
617 } \
618 else \
619 { \
620 if (number.word != 0 && alt && base == 16) \
621 { \
622 *string-- = spec; \
623 *string-- = '0'; \
624 } \
625 \
626 if (is_negative) \
627 *string-- = '-'; \
628 else if (showsign) \
629 *string-- = '+'; \
630 else if (space) \
631 *string-- = ' '; \
632 \
633 while (width-- > 0) \
634 *string-- = ' '; \
635 } \
636 \
637 outstring (string + 1, workend - string); \
638 \
639 break; \
640 } \
641 else \
642 { \
643 if (number.word != 0 && alt && base == 16) \
644 { \
645 *string-- = spec; \
646 *string-- = '0'; \
647 } \
648 \
649 if (is_negative) \
650 *string-- = '-'; \
651 else if (showsign) \
652 *string-- = '+'; \
653 else if (space) \
654 *string-- = ' '; \
655 \
656 width -= workend - string; \
657 outstring (string + 1, workend - string); \
658 \
659 PAD (' '); \
660 break; \
661 } \
662 \
663 LABEL (form_float): \
664 { \
665 /* Floating-point number. This is handled by printf_fp.c. */ \
666 extern int __printf_fp __P ((FILE *, const struct printf_info *, \
667 const void **const)); \
668 const void *ptr; \
669 int function_done; \
670 \
671 if (fspec == NULL) \
672 { \
673 struct printf_info info = { prec: prec, \
674 width: width, \
675 spec: spec, \
676 is_long_double: is_long_double, \
677 is_short: is_short, \
678 is_long: is_long, \
679 alt: alt, \
680 space: space, \
681 left: left, \
682 showsign: showsign, \
683 group: group, \
684 pad: pad, \
685 extra: 0 }; \
686 \
687 if (is_long_double) \
688 the_arg.pa_long_double = va_arg (ap, long double); \
689 else \
690 the_arg.pa_double = va_arg (ap, double); \
691 ptr = (const void *) &the_arg; \
692 \
693 function_done = __printf_fp (s, &info, &ptr); \
694 } \
695 else \
696 { \
697 ptr = (const void *) &args_value[fspec->data_arg]; \
698 \
699 function_done = __printf_fp (s, &fspec->info, &ptr); \
700 } \
701 \
702 if (function_done < 0) \
703 /* Error in print handler. */ \
704 return -1; \
705 \
706 done += function_done; \
707 } \
708 break; \
709 \
710 LABEL (form_floathex): \
711 { \
712 /* FLoating point number printed as hexadecimal number. */ \
713 extern int __printf_fphex __P ((FILE *, const struct printf_info *, \
714 const void **const)); \
715 const void *ptr; \
716 int function_done; \
717 \
718 if (fspec == NULL) \
719 { \
720 struct printf_info info = { prec: prec, \
721 width: width, \
722 spec: spec, \
723 is_long_double: is_long_double, \
724 is_short: is_short, \
725 is_long: is_long, \
726 alt: alt, \
727 space: space, \
728 left: left, \
729 showsign: showsign, \
730 group: group, \
731 pad: pad, \
732 extra: 0 }; \
733 \
734 if (is_long_double) \
735 the_arg.pa_long_double = va_arg (ap, long double); \
736 else \
737 the_arg.pa_double = va_arg (ap, double); \
738 ptr = (const void *) &the_arg; \
739 \
740 function_done = __printf_fphex (s, &info, &ptr); \
741 } \
742 else \
743 { \
744 ptr = (const void *) &args_value[fspec->data_arg]; \
745 \
746 function_done = __printf_fphex (s, &fspec->info, &ptr); \
747 } \
748 \
749 if (function_done < 0) \
750 /* Error in print handler. */ \
751 return -1; \
752 \
753 done += function_done; \
754 } \
755 break; \
756 \
757 LABEL (form_character): \
758 /* Character. */ \
759 if (is_long) \
760 goto LABEL (form_wcharacter); \
761 --width; /* Account for the character itself. */ \
762 if (!left) \
763 PAD (' '); \
764 if (fspec == NULL) \
765 outchar ((unsigned char) va_arg (ap, int)); /* Promoted. */ \
766 else \
767 outchar ((unsigned char) args_value[fspec->data_arg].pa_char); \
768 if (left) \
769 PAD (' '); \
770 break; \
771 \
772 LABEL (form_wcharacter): \
773 { \
774 /* Wide character. */ \
775 char buf[MB_CUR_MAX]; \
776 mbstate_t mbstate; \
777 size_t len; \
778 \
779 len = __wcrtomb (buf, (fspec == NULL ? va_arg (ap, wint_t) \
780 : args_value[fspec->data_arg].pa_wchar), \
781 &mbstate); \
782 width -= len; \
783 if (!left) \
784 PAD (' '); \
785 outstring (buf, len); \
786 if (left) \
787 PAD (' '); \
788 } \
789 break; \
790 \
791 LABEL (form_string): \
792 { \
793 size_t len; \
794 \
795 /* The string argument could in fact be `char *' or `wchar_t *'. \
796 But this should not make a difference here. */ \
797 if (fspec == NULL) \
798 string = (char *) va_arg (ap, const char *); \
799 else \
800 string = (char *) args_value[fspec->data_arg].pa_string; \
801 \
802 /* Entry point for printing other strings. */ \
803 LABEL (print_string): \
804 \
805 if (string == NULL) \
806 { \
807 /* Write "(null)" if there's space. */ \
808 if (prec == -1 || prec >= (int) sizeof (null) - 1) \
809 { \
810 string = (char *) null; \
811 len = sizeof (null) - 1; \
812 } \
813 else \
814 { \
815 string = (char *) ""; \
816 len = 0; \
817 } \
818 } \
819 else if (!is_long && spec != L_('S')) \
820 { \
821 if (prec != -1) \
822 /* Search for the end of the string, but don't search past \
823 the length specified by the precision. */ \
824 len = strnlen (string, prec); \
825 else \
826 len = strlen (string); \
827 } \
828 else \
829 { \
830 const wchar_t *s2 = (const wchar_t *) string; \
831 mbstate_t mbstate; \
832 \
833 len = __wcsrtombs (NULL, &s2, 0, &mbstate); \
834 if (len == (size_t) -1) \
835 /* Illegal wide-character string. */ \
836 return -1; \
837 \
838 s2 = (const wchar_t *) string; \
839 string = alloca (len + 1); \
840 (void) __wcsrtombs (string, &s2, prec != -1 ? prec : UINT_MAX, \
841 &mbstate); \
842 } \
843 \
844 if ((width -= len) < 0) \
845 { \
846 outstring (string, len); \
847 break; \
848 } \
849 \
850 if (!left) \
851 PAD (' '); \
852 outstring (string, len); \
853 if (left) \
854 PAD (' '); \
855 } \
856 break; \
857 \
858 LABEL (form_pointer): \
859 /* Generic pointer. */ \
860 { \
861 const void *ptr; \
862 if (fspec == NULL) \
863 ptr = va_arg (ap, void *); \
864 else \
865 ptr = args_value[fspec->data_arg].pa_pointer; \
866 if (ptr != NULL) \
867 { \
868 /* If the pointer is not NULL, write it as a %#x spec. */ \
869 base = 16; \
870 number.word = (unsigned long int) ptr; \
871 is_negative = 0; \
872 alt = 1; \
873 group = 0; \
874 spec = 'x'; \
875 goto LABEL (number); \
876 } \
877 else \
878 { \
879 /* Write "(nil)" for a nil pointer. */ \
880 string = (char *) "(nil)"; \
881 /* Make sure the full string "(nil)" is printed. */ \
882 if (prec < 5) \
883 prec = 5; \
884 is_long = 0; /* This is no wide-char string. */ \
885 goto LABEL (print_string); \
886 } \
887 } \
888 /* NOTREACHED */ \
889 \
890 LABEL (form_number): \
891 /* Answer the count of characters written. */ \
892 if (fspec == NULL) \
893 if (is_longlong) \
894 *(long long int *) va_arg (ap, void *) = done; \
895 else if (is_long) \
896 *(long int *) va_arg (ap, void *) = done; \
897 else if (!is_short) \
898 *(int *) va_arg (ap, void *) = done; \
899 else \
900 *(short int *) va_arg (ap, void *) = done; \
901 else \
902 if (is_longlong) \
903 *(long long int *) args_value[fspec->data_arg].pa_pointer = done; \
904 else if (is_long) \
905 *(long int *) args_value[fspec->data_arg].pa_pointer = done; \
906 else if (!is_short) \
907 *(int *) args_value[fspec->data_arg].pa_pointer = done; \
908 else \
909 *(short int *) args_value[fspec->data_arg].pa_pointer = done; \
910 break; \
911 \
912 LABEL (form_strerror): \
913 /* Print description of error ERRNO. */ \
914 { \
915 extern char *_strerror_internal __P ((int, char *buf, size_t)); \
916 \
917 string = (char *) \
918 _strerror_internal (save_errno, work_buffer, sizeof work_buffer); \
919 } \
920 is_long = 0; /* This is no wide-char string. */ \
921 goto LABEL (print_string)
922
923
924 /* Sanity check of arguments. */
925 ARGCHECK (s, format);
926
927 if (UNBUFFERED_P (s))
928 /* Use a helper function which will allocate a local temporary buffer
929 for the stream and then call us again. */
930 return buffered_vfprintf (s, format, ap);
931
932 /* Initialize local variables. */
933 done = 0;
934 grouping = (const char *) -1;
935 #ifdef __va_copy
936 /* This macro will be available soon in gcc's <stdarg.h>. We need it
937 since on some systems `va_list' is not an integral type. */
938 __va_copy (ap_save, ap);
939 #else
940 ap_save = ap;
941 #endif
942 nspecs_done = 0;
943
944 /* Find the first format specifier. */
945 f = lead_str_end = find_spec (format, &mbstate);
946
947 /* Lock stream. */
948 #ifdef USE_IN_LIBIO
949 __libc_cleanup_region_start ((void (*) (void *)) &_IO_funlockfile, s);
950 _IO_flockfile (s);
951 #else
952 __libc_cleanup_region_start ((void (*) (void *)) &__funlockfile, s);
953 __flockfile (s);
954 #endif
955
956 /* Write the literal text before the first format. */
957 outstring ((const UCHAR_T *) format,
958 lead_str_end - (const UCHAR_T *) format);
959
960 /* If we only have to print a simple string, return now. */
961 if (*f == L_('\0'))
962 goto all_done;
963
964 /* Process whole format string. */
965 do
966 {
967 #define REF(Name) &&do_##Name
968 #define LABEL(Name) do_##Name
969 STEP0_3_TABLE;
970 STEP4_TABLE;
971
972 union printf_arg *args_value; /* This is not used here but ... */
973 int is_negative; /* Flag for negative number. */
974 union
975 {
976 unsigned long long int longlong;
977 unsigned long int word;
978 } number;
979 int base;
980 union printf_arg the_arg;
981 char *string; /* Pointer to argument string. */
982 int alt = 0; /* Alternate format. */
983 int space = 0; /* Use space prefix if no sign is needed. */
984 int left = 0; /* Left-justify output. */
985 int showsign = 0; /* Always begin with plus or minus sign. */
986 int group = 0; /* Print numbers according grouping rules. */
987 int is_long_double = 0; /* Argument is long double/ long long int. */
988 int is_short = 0; /* Argument is long int. */
989 int is_long = 0; /* Argument is short int. */
990 int width = 0; /* Width of output; 0 means none specified. */
991 int prec = -1; /* Precision of output; -1 means none specified. */
992 char pad = ' '; /* Padding character. */
993 CHAR_T spec;
994
995 /* Get current character in format string. */
996 JUMP (*++f, step0_jumps);
997
998 /* ' ' flag. */
999 LABEL (flag_space):
1000 space = 1;
1001 JUMP (*++f, step0_jumps);
1002
1003 /* '+' flag. */
1004 LABEL (flag_plus):
1005 showsign = 1;
1006 JUMP (*++f, step0_jumps);
1007
1008 /* The '-' flag. */
1009 LABEL (flag_minus):
1010 left = 1;
1011 pad = L_(' ');
1012 JUMP (*++f, step0_jumps);
1013
1014 /* The '#' flag. */
1015 LABEL (flag_hash):
1016 alt = 1;
1017 JUMP (*++f, step0_jumps);
1018
1019 /* The '0' flag. */
1020 LABEL (flag_zero):
1021 if (!left)
1022 pad = L_('0');
1023 JUMP (*++f, step0_jumps);
1024
1025 /* The '\'' flag. */
1026 LABEL (flag_quote):
1027 group = 1;
1028
1029 /* XXX Completely wrong. Use wctob. */
1030 if (grouping == (const char *) -1)
1031 {
1032 /* Figure out the thousands separator character. */
1033 if (mbtowc (&thousands_sep,
1034 _NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP),
1035 strlen (_NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP))) <= 0)
1036 thousands_sep = (wchar_t)
1037 *_NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP);
1038 grouping = _NL_CURRENT (LC_NUMERIC, GROUPING);
1039 if (*grouping == '\0' || *grouping == CHAR_MAX
1040 || thousands_sep == L'\0')
1041 grouping = NULL;
1042 }
1043 JUMP (*++f, step0_jumps);
1044
1045 /* Get width from argument. */
1046 LABEL (width_asterics):
1047 {
1048 const UCHAR_T *tmp; /* Temporary value. */
1049
1050 tmp = ++f;
1051 if (ISDIGIT (*tmp) && read_int (&tmp) && *tmp == L_('$'))
1052 /* The width comes from a positional parameter. */
1053 goto do_positional;
1054
1055 width = va_arg (ap, int);
1056
1057 /* Negative width means left justified. */
1058 if (width < 0)
1059 {
1060 width = -width;
1061 pad = L_(' ');
1062 left = 1;
1063 }
1064 }
1065 JUMP (*f, step1_jumps);
1066
1067 /* Given width in format string. */
1068 LABEL (width):
1069 width = read_int (&f);
1070 if (*f == L_('$'))
1071 /* Oh, oh. The argument comes from a positional parameter. */
1072 goto do_positional;
1073 JUMP (*f, step1_jumps);
1074
1075 LABEL (precision):
1076 ++f;
1077 if (*f == L_('*'))
1078 {
1079 const UCHAR_T *tmp; /* Temporary value. */
1080
1081 tmp = ++f;
1082 if (ISDIGIT (*tmp) && read_int (&tmp) > 0 && *tmp == L_('$'))
1083 /* The precision comes from a positional parameter. */
1084 goto do_positional;
1085
1086 prec = va_arg (ap, int);
1087
1088 /* If the precision is negative the precision is omitted. */
1089 if (prec < 0)
1090 prec = -1;
1091 }
1092 else if (ISDIGIT (*f))
1093 prec = read_int (&f);
1094 else
1095 prec = 0;
1096 JUMP (*f, step2_jumps);
1097
1098 /* Process 'h' modifier. No other modifier is allowed to
1099 follow. */
1100 LABEL (mod_half):
1101 is_short = 1;
1102 JUMP (*++f, step4_jumps);
1103
1104 /* Process 'l' modifier. There might another 'l' follow. */
1105 LABEL (mod_long):
1106 is_long = 1;
1107 JUMP (*++f, step3_jumps);
1108
1109 /* Process 'L', 'q', or 'll' modifier. No other modifier is
1110 allowed to follow. */
1111 LABEL (mod_longlong):
1112 is_long_double = 1;
1113 JUMP (*++f, step4_jumps);
1114
1115 LABEL (mod_size_t):
1116 is_longlong = sizeof (size_t) > sizeof (unsigned long int);
1117 is_long = sizeof (size_t) > sizeof (unsigned int);
1118 JUMP (*++f, step4_jumps);
1119
1120 /* Process current format. */
1121 while (1)
1122 {
1123 process_arg (((struct printf_spec *) NULL));
1124
1125 LABEL (form_unknown):
1126 if (spec == L_('\0'))
1127 {
1128 /* The format string ended before the specifier is complete. */
1129 done = -1;
1130 goto all_done;
1131 }
1132
1133 /* If we are in the fast loop force entering the complicated
1134 one. */
1135 goto do_positional;
1136 }
1137
1138 /* The format is correctly handled. */
1139 ++nspecs_done;
1140
1141 /* Look for next format specifier. */
1142 f = find_spec ((end_of_spec = ++f), &mbstate);
1143
1144 /* Write the following constant string. */
1145 outstring (end_of_spec, f - end_of_spec);
1146 }
1147 while (*f != L_('\0'));
1148
1149 /* Unlock stream and return. */
1150 goto all_done;
1151
1152 /* Here starts the more complex loop to handle positional parameters. */
1153 do_positional:
1154 {
1155 /* Array with information about the needed arguments. This has to
1156 be dynamically extensible. */
1157 size_t nspecs = 0;
1158 size_t nspecs_max = 32; /* A more or less arbitrary start value. */
1159 struct printf_spec *specs
1160 = alloca (nspecs_max * sizeof (struct printf_spec));
1161
1162 /* The number of arguments the format string requests. This will
1163 determine the size of the array needed to store the argument
1164 attributes. */
1165 size_t nargs = 0;
1166 int *args_type;
1167 union printf_arg *args_value;
1168
1169 /* Positional parameters refer to arguments directly. This could
1170 also determine the maximum number of arguments. Track the
1171 maximum number. */
1172 size_t max_ref_arg = 0;
1173
1174 /* Just a counter. */
1175 size_t cnt;
1176
1177
1178 if (grouping == (const char *) -1)
1179 {
1180 /* XXX Use wctob. But this is incompatible for now. */
1181 /* Figure out the thousands separator character. */
1182 if (mbtowc (&thousands_sep,
1183 _NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP),
1184 strlen (_NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP))) <= 0)
1185 thousands_sep = (wchar_t) *_NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP);
1186 grouping = _NL_CURRENT (LC_NUMERIC, GROUPING);
1187 if (*grouping == '\0' || *grouping == CHAR_MAX
1188 || thousands_sep == L'\0')
1189 grouping = NULL;
1190 }
1191
1192 for (f = lead_str_end; *f != '\0'; f = specs[nspecs++].next_fmt)
1193 {
1194 if (nspecs >= nspecs_max)
1195 {
1196 /* Extend the array of format specifiers. */
1197 struct printf_spec *old = specs;
1198
1199 nspecs_max *= 2;
1200 specs = alloca (nspecs_max * sizeof (struct printf_spec));
1201
1202 if (specs == &old[nspecs])
1203 /* Stack grows up, OLD was the last thing allocated;
1204 extend it. */
1205 nspecs_max += nspecs_max / 2;
1206 else
1207 {
1208 /* Copy the old array's elements to the new space. */
1209 memcpy (specs, old, nspecs * sizeof (struct printf_spec));
1210 if (old == &specs[nspecs])
1211 /* Stack grows down, OLD was just below the new
1212 SPECS. We can use that space when the new space
1213 runs out. */
1214 nspecs_max += nspecs_max / 2;
1215 }
1216 }
1217
1218 /* Parse the format specifier. */
1219 nargs += parse_one_spec (f, nargs, &specs[nspecs], &max_ref_arg,
1220 &mbstate);
1221 }
1222
1223 /* Determine the number of arguments the format string consumes. */
1224 nargs = MAX (nargs, max_ref_arg);
1225
1226 /* Allocate memory for the argument descriptions. */
1227 args_type = alloca (nargs * sizeof (int));
1228 memset (args_type, 0, nargs * sizeof (int));
1229 args_value = alloca (nargs * sizeof (union printf_arg));
1230
1231 /* XXX Could do sanity check here: If any element in ARGS_TYPE is
1232 still zero after this loop, format is invalid. For now we
1233 simply use 0 as the value. */
1234
1235 /* Fill in the types of all the arguments. */
1236 for (cnt = 0; cnt < nspecs; ++cnt)
1237 {
1238 /* If the width is determined by an argument this is an int. */
1239 if (specs[cnt].width_arg != -1)
1240 args_type[specs[cnt].width_arg] = PA_INT;
1241
1242 /* If the precision is determined by an argument this is an int. */
1243 if (specs[cnt].prec_arg != -1)
1244 args_type[specs[cnt].prec_arg] = PA_INT;
1245
1246 switch (specs[cnt].ndata_args)
1247 {
1248 case 0: /* No arguments. */
1249 break;
1250 case 1: /* One argument; we already have the type. */
1251 args_type[specs[cnt].data_arg] = specs[cnt].data_arg_type;
1252 break;
1253 default:
1254 /* We have more than one argument for this format spec.
1255 We must call the arginfo function again to determine
1256 all the types. */
1257 (void) (*__printf_arginfo_table[specs[cnt].info.spec])
1258 (&specs[cnt].info,
1259 specs[cnt].ndata_args, &args_type[specs[cnt].data_arg]);
1260 break;
1261 }
1262 }
1263
1264 /* Now we know all the types and the order. Fill in the argument
1265 values. */
1266 for (cnt = 0; cnt < nargs; ++cnt)
1267 switch (args_type[cnt])
1268 {
1269 #define T(tag, mem, type) \
1270 case tag: \
1271 args_value[cnt].mem = va_arg (ap_save, type); \
1272 break
1273
1274 T (PA_CHAR, pa_char, int); /* Promoted. */
1275 T (PA_WCHAR, pa_wchar, wint_t);
1276 T (PA_INT|PA_FLAG_SHORT, pa_short_int, int); /* Promoted. */
1277 T (PA_INT, pa_int, int);
1278 T (PA_INT|PA_FLAG_LONG, pa_long_int, long int);
1279 T (PA_INT|PA_FLAG_LONG_LONG, pa_long_long_int, long long int);
1280 T (PA_FLOAT, pa_float, double); /* Promoted. */
1281 T (PA_DOUBLE, pa_double, double);
1282 T (PA_DOUBLE|PA_FLAG_LONG_DOUBLE, pa_long_double, long double);
1283 T (PA_STRING, pa_string, const char *);
1284 T (PA_WSTRING, pa_wstring, const wchar_t *);
1285 T (PA_POINTER, pa_pointer, void *);
1286 #undef T
1287 default:
1288 if ((args_type[cnt] & PA_FLAG_PTR) != 0)
1289 args_value[cnt].pa_pointer = va_arg (ap_save, void *);
1290 else
1291 args_value[cnt].pa_long_double = 0.0;
1292 break;
1293 }
1294
1295 /* Now walk through all format specifiers and process them. */
1296 for (; (size_t) nspecs_done < nspecs; ++nspecs_done)
1297 {
1298 #undef REF
1299 #define REF(Name) &&do2_##Name
1300 #undef LABEL
1301 #define LABEL(Name) do2_##Name
1302 STEP4_TABLE;
1303
1304 int is_negative;
1305 union
1306 {
1307 unsigned long long int longlong;
1308 unsigned long int word;
1309 } number;
1310 int base;
1311 union printf_arg the_arg;
1312 char *string; /* Pointer to argument string. */
1313
1314 /* Fill variables from values in struct. */
1315 int alt = specs[nspecs_done].info.alt;
1316 int space = specs[nspecs_done].info.space;
1317 int left = specs[nspecs_done].info.left;
1318 int showsign = specs[nspecs_done].info.showsign;
1319 int group = specs[nspecs_done].info.group;
1320 int is_long_double = specs[nspecs_done].info.is_long_double;
1321 int is_short = specs[nspecs_done].info.is_short;
1322 int is_long = specs[nspecs_done].info.is_long;
1323 int width = specs[nspecs_done].info.width;
1324 int prec = specs[nspecs_done].info.prec;
1325 char pad = specs[nspecs_done].info.pad;
1326 CHAR_T spec = specs[nspecs_done].info.spec;
1327
1328 /* Fill in last information. */
1329 if (specs[nspecs_done].width_arg != -1)
1330 {
1331 /* Extract the field width from an argument. */
1332 specs[nspecs_done].info.width =
1333 args_value[specs[nspecs_done].width_arg].pa_int;
1334
1335 if (specs[nspecs_done].info.width < 0)
1336 /* If the width value is negative left justification is
1337 selected and the value is taken as being positive. */
1338 {
1339 specs[nspecs_done].info.width *= -1;
1340 left = specs[nspecs_done].info.left = 1;
1341 }
1342 width = specs[nspecs_done].info.width;
1343 }
1344
1345 if (specs[nspecs_done].prec_arg != -1)
1346 {
1347 /* Extract the precision from an argument. */
1348 specs[nspecs_done].info.prec =
1349 args_value[specs[nspecs_done].prec_arg].pa_int;
1350
1351 if (specs[nspecs_done].info.prec < 0)
1352 /* If the precision is negative the precision is
1353 omitted. */
1354 specs[nspecs_done].info.prec = -1;
1355
1356 prec = specs[nspecs_done].info.prec;
1357 }
1358
1359 /* Process format specifiers. */
1360 while (1)
1361 {
1362 JUMP (spec, step4_jumps);
1363
1364 process_arg ((&specs[nspecs_done]));
1365
1366 LABEL (form_unknown):
1367 {
1368 extern printf_function **__printf_function_table;
1369 int function_done;
1370 printf_function *function;
1371 unsigned int i;
1372 const void **ptr;
1373
1374 function =
1375 (__printf_function_table == NULL ? NULL :
1376 __printf_function_table[specs[nspecs_done].info.spec]);
1377
1378 if (function == NULL)
1379 function = &printf_unknown;
1380
1381 ptr = alloca (specs[nspecs_done].ndata_args
1382 * sizeof (const void *));
1383
1384 /* Fill in an array of pointers to the argument values. */
1385 for (i = 0; i < specs[nspecs_done].ndata_args; ++i)
1386 ptr[i] = &args_value[specs[nspecs_done].data_arg + i];
1387
1388 /* Call the function. */
1389 function_done = (*function) (s, &specs[nspecs_done].info, ptr);
1390
1391 /* If an error occurred we don't have information about #
1392 of chars. */
1393 if (function_done < 0)
1394 {
1395 done = -1;
1396 goto all_done;
1397 }
1398
1399 done += function_done;
1400 }
1401 break;
1402 }
1403
1404 /* Write the following constant string. */
1405 outstring (specs[nspecs_done].end_of_fmt,
1406 specs[nspecs_done].next_fmt
1407 - specs[nspecs_done].end_of_fmt);
1408 }
1409 }
1410
1411 all_done:
1412 /* Unlock the stream. */
1413 __libc_cleanup_region_end (1);
1414
1415 return done;
1416 }
1417
1418 #ifdef USE_IN_LIBIO
1419 # undef vfprintf
1420 # ifdef strong_alias
1421 /* This is for glibc. */
1422 strong_alias (_IO_vfprintf, vfprintf);
1423 # else
1424 # if defined __ELF__ || defined __GNU_LIBRARY__
1425 # include <gnu-stabs.h>
1426 # ifdef weak_alias
1427 weak_alias (_IO_vfprintf, vfprintf);
1428 # endif
1429 # endif
1430 # endif
1431 #endif
1432 \f
1433 /* Handle an unknown format specifier. This prints out a canonicalized
1434 representation of the format spec itself. */
1435 static int
1436 printf_unknown (FILE *s, const struct printf_info *info,
1437 const void *const *args)
1438
1439 {
1440 int done = 0;
1441 char work_buffer[BUFSIZ];
1442 register char *w;
1443
1444 outchar ('%');
1445
1446 if (info->alt)
1447 outchar ('#');
1448 if (info->group)
1449 outchar ('\'');
1450 if (info->showsign)
1451 outchar ('+');
1452 else if (info->space)
1453 outchar (' ');
1454 if (info->left)
1455 outchar ('-');
1456 if (info->pad == '0')
1457 outchar ('0');
1458
1459 if (info->width != 0)
1460 {
1461 w = _itoa_word (info->width, workend + 1, 10, 0);
1462 while (w <= workend)
1463 outchar (*w++);
1464 }
1465
1466 if (info->prec != -1)
1467 {
1468 outchar ('.');
1469 w = _itoa_word (info->prec, workend + 1, 10, 0);
1470 while (w <= workend)
1471 outchar (*w++);
1472 }
1473
1474 if (info->spec != '\0')
1475 outchar (info->spec);
1476
1477 return done;
1478 }
1479 \f
1480 /* Group the digits according to the grouping rules of the current locale.
1481 The interpretation of GROUPING is as in `struct lconv' from <locale.h>. */
1482 static char *
1483 group_number (CHAR_T *w, CHAR_T *rear_ptr, const CHAR_T *grouping,
1484 wchar_t thousands_sep)
1485 {
1486 int len;
1487 char *src, *s;
1488
1489 /* We treat all negative values like CHAR_MAX. */
1490
1491 if (*grouping == CHAR_MAX || *grouping <= 0)
1492 /* No grouping should be done. */
1493 return w;
1494
1495 len = *grouping;
1496
1497 /* Copy existing string so that nothing gets overwritten. */
1498 src = (char *) alloca (rear_ptr - w);
1499 memcpy (src, w + 1, rear_ptr - w);
1500 s = &src[rear_ptr - w - 1];
1501 w = rear_ptr;
1502
1503 /* Process all characters in the string. */
1504 while (s >= src)
1505 {
1506 *w-- = *s--;
1507
1508 if (--len == 0 && s >= src)
1509 {
1510 /* A new group begins. */
1511 *w-- = thousands_sep;
1512
1513 len = *grouping++;
1514 if (*grouping == '\0')
1515 /* The previous grouping repeats ad infinitum. */
1516 --grouping;
1517 else if (*grouping == CHAR_MAX || *grouping < 0)
1518 {
1519 /* No further grouping to be done.
1520 Copy the rest of the number. */
1521 do
1522 *w-- = *s--;
1523 while (s >= src);
1524 break;
1525 }
1526 }
1527 }
1528 return w;
1529 }
1530 \f
1531 #ifdef USE_IN_LIBIO
1532 /* Helper "class" for `fprintf to unbuffered': creates a temporary buffer. */
1533 struct helper_file
1534 {
1535 struct _IO_FILE_plus _f;
1536 _IO_FILE *_put_stream;
1537 #ifdef _IO_MTSAFE_IO
1538 _IO_lock_t lock;
1539 #endif
1540 };
1541
1542 static int
1543 _IO_helper_overflow (_IO_FILE *s, int c)
1544 {
1545 _IO_FILE *target = ((struct helper_file*) s)->_put_stream;
1546 int used = s->_IO_write_ptr - s->_IO_write_base;
1547 if (used)
1548 {
1549 _IO_size_t written = _IO_sputn (target, s->_IO_write_base, used);
1550 s->_IO_write_ptr -= written;
1551 }
1552 return PUTC (c, s);
1553 }
1554
1555 static const struct _IO_jump_t _IO_helper_jumps =
1556 {
1557 JUMP_INIT_DUMMY,
1558 JUMP_INIT (finish, _IO_default_finish),
1559 JUMP_INIT (overflow, _IO_helper_overflow),
1560 JUMP_INIT (underflow, _IO_default_underflow),
1561 JUMP_INIT (uflow, _IO_default_uflow),
1562 JUMP_INIT (pbackfail, _IO_default_pbackfail),
1563 JUMP_INIT (xsputn, _IO_default_xsputn),
1564 JUMP_INIT (xsgetn, _IO_default_xsgetn),
1565 JUMP_INIT (seekoff, _IO_default_seekoff),
1566 JUMP_INIT (seekpos, _IO_default_seekpos),
1567 JUMP_INIT (setbuf, _IO_default_setbuf),
1568 JUMP_INIT (sync, _IO_default_sync),
1569 JUMP_INIT (doallocate, _IO_default_doallocate),
1570 JUMP_INIT (read, _IO_default_read),
1571 JUMP_INIT (write, _IO_default_write),
1572 JUMP_INIT (seek, _IO_default_seek),
1573 JUMP_INIT (close, _IO_default_close),
1574 JUMP_INIT (stat, _IO_default_stat)
1575 };
1576
1577 static int
1578 buffered_vfprintf (register _IO_FILE *s, const CHAR_T *format,
1579 _IO_va_list args)
1580 {
1581 char buf[_IO_BUFSIZ];
1582 struct helper_file helper;
1583 register _IO_FILE *hp = (_IO_FILE *) &helper;
1584 int result, to_flush;
1585
1586 /* Initialize helper. */
1587 helper._put_stream = s;
1588 hp->_IO_write_base = buf;
1589 hp->_IO_write_ptr = buf;
1590 hp->_IO_write_end = buf + sizeof buf;
1591 hp->_IO_file_flags = _IO_MAGIC|_IO_NO_READS;
1592 #ifdef _IO_MTSAFE_IO
1593 hp->_lock = &helper.lock;
1594 __libc_lock_init (*hp->_lock);
1595 #endif
1596 _IO_JUMPS (hp) = (struct _IO_jump_t *) &_IO_helper_jumps;
1597
1598 /* Now print to helper instead. */
1599 result = _IO_vfprintf (hp, format, args);
1600
1601 /* Now flush anything from the helper to the S. */
1602 if ((to_flush = hp->_IO_write_ptr - hp->_IO_write_base) > 0)
1603 {
1604 if ((int) _IO_sputn (s, hp->_IO_write_base, to_flush) != to_flush)
1605 return -1;
1606 }
1607
1608 return result;
1609 }
1610
1611 #else /* !USE_IN_LIBIO */
1612
1613 static int
1614 buffered_vfprintf (register FILE *s, const CHAR_T *format, va_list args)
1615 {
1616 char buf[BUFSIZ];
1617 int result;
1618
1619 s->__bufp = s->__buffer = buf;
1620 s->__bufsize = sizeof buf;
1621 s->__put_limit = s->__buffer + s->__bufsize;
1622 s->__get_limit = s->__buffer;
1623
1624 /* Now use buffer to print. */
1625 result = vfprintf (s, format, args);
1626
1627 if (fflush (s) == EOF)
1628 result = -1;
1629 s->__buffer = s->__bufp = s->__get_limit = s->__put_limit = NULL;
1630 s->__bufsize = 0;
1631
1632 return result;
1633 }
1634 \f
1635 /* Pads string with given number of a specified character.
1636 This code is taken from iopadn.c of the GNU I/O library. */
1637 #define PADSIZE 16
1638 static const CHAR_T blanks[PADSIZE] =
1639 { L_(' '), L_(' '), L_(' '), L_(' '), L_(' '), L_(' '), L_(' '), L_(' '),
1640 L_(' '), L_(' '), L_(' '), L_(' '), L_(' '), L_(' '), L_(' '), L_(' ') };
1641 static const CHAR_T zeroes[PADSIZE] =
1642 { L_('0'), L_('0'), L_('0'), L_('0'), L_('0'), L_('0'), L_('0'), L_('0'),
1643 L_('0'), L_('0'), L_('0'), L_('0'), L_('0'), L_('0'), L_('0'), L_('0') };
1644
1645 ssize_t
1646 #ifndef COMPILE_WPRINTF
1647 __printf_pad (FILE *s, char pad, size_t count)
1648 #else
1649 __wprintf_pad (FILE *s, wchar_t pad, size_t count)
1650 #endif
1651 {
1652 const CHAR_T *padptr;
1653 register size_t i;
1654
1655 padptr = pad == L_(' ') ? blanks : zeroes;
1656
1657 for (i = count; i >= PADSIZE; i -= PADSIZE)
1658 if (PUT (s, padptr, PADSIZE) != PADSIZE)
1659 return -1;
1660 if (i > 0)
1661 if (PUT (s, padptr, i) != i)
1662 return -1;
1663
1664 return count;
1665 }
1666 #undef PADSIZE
1667 #endif /* USE_IN_LIBIO */
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