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Fix typo.
[glibc.git] / stdio-common / vfprintf.c
blobd10a5c6a13255fa2ea2b23b1ab726ca95b1f160b
1 /* Copyright (C) 1991-2002, 2003, 2004, 2005, 2006, 2007
2 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, write to the Free
17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
18 02111-1307 USA. */
19
20 #include <ctype.h>
21 #include <limits.h>
22 #include <printf.h>
23 #include <stdarg.h>
24 #include <stdint.h>
25 #include <stdlib.h>
26 #include <string.h>
27 #include <errno.h>
28 #include <wchar.h>
29 #include <bits/libc-lock.h>
30 #include <sys/param.h>
31 #include "_itoa.h"
32 #include <locale/localeinfo.h>
33 #include <stdio.h>
34
35 /* This code is shared between the standard stdio implementation found
36 in GNU C library and the libio implementation originally found in
37 GNU libg++.
38
39 Beside this it is also shared between the normal and wide character
40 implementation as defined in ISO/IEC 9899:1990/Amendment 1:1995. */
41
42
43 #include <libioP.h>
44 #define FILE _IO_FILE
45 #undef va_list
46 #define va_list _IO_va_list
47 #undef BUFSIZ
48 #define BUFSIZ _IO_BUFSIZ
49 #define ARGCHECK(S, Format) \
50 do \
51 { \
52 /* Check file argument for consistence. */ \
53 CHECK_FILE (S, -1); \
54 if (S->_flags & _IO_NO_WRITES) \
55 { \
56 __set_errno (EBADF); \
57 return -1; \
58 } \
59 if (Format == NULL) \
60 { \
61 MAYBE_SET_EINVAL; \
62 return -1; \
63 } \
64 } while (0)
65 #define UNBUFFERED_P(S) ((S)->_IO_file_flags & _IO_UNBUFFERED)
66
67 #define done_add(val) \
68 do { \
69 unsigned int _val = val; \
70 assert ((unsigned int) done < (unsigned int) INT_MAX); \
71 if (__builtin_expect ((unsigned int) INT_MAX - (unsigned int) done \
72 < _val, 0)) \
73 { \
74 done = -1; \
75 goto all_done; \
76 } \
77 done += _val; \
78 } while (0)
79
80 #ifndef COMPILE_WPRINTF
81 # define vfprintf _IO_vfprintf_internal
82 # define CHAR_T char
83 # define UCHAR_T unsigned char
84 # define INT_T int
85 # define L_(Str) Str
86 # define ISDIGIT(Ch) ((unsigned int) ((Ch) - '0') < 10)
87 # define STR_LEN(Str) strlen (Str)
88
89 # define PUT(F, S, N) _IO_sputn ((F), (S), (N))
90 # define PAD(Padchar) \
91 if (width > 0) \
92 done_add (INTUSE(_IO_padn) (s, (Padchar), width))
93 # define PUTC(C, F) _IO_putc_unlocked (C, F)
94 # define ORIENT if (_IO_vtable_offset (s) == 0 && _IO_fwide (s, -1) != -1)\
95 return -1
96 #else
97 # define vfprintf _IO_vfwprintf
98 # define CHAR_T wchar_t
99 /* This is a hack!!! There should be a type uwchar_t. */
100 # define UCHAR_T unsigned int /* uwchar_t */
101 # define INT_T wint_t
102 # define L_(Str) L##Str
103 # define ISDIGIT(Ch) ((unsigned int) ((Ch) - L'0') < 10)
104 # define STR_LEN(Str) __wcslen (Str)
105
106 # include "_itowa.h"
107
108 # define PUT(F, S, N) _IO_sputn ((F), (S), (N))
109 # define PAD(Padchar) \
110 if (width > 0) \
111 done_add (_IO_wpadn (s, (Padchar), width))
112 # define PUTC(C, F) _IO_putwc_unlocked (C, F)
113 # define ORIENT if (_IO_fwide (s, 1) != 1) return -1
114
115 # undef _itoa
116 # define _itoa(Val, Buf, Base, Case) _itowa (Val, Buf, Base, Case)
117 # define _itoa_word(Val, Buf, Base, Case) _itowa_word (Val, Buf, Base, Case)
118 # undef EOF
119 # define EOF WEOF
120 #endif
121
122 #include "_i18n_number.h"
123
124 /* Include the shared code for parsing the format string. */
125 #include "printf-parse.h"
126
127
128 #define outchar(Ch) \
129 do \
130 { \
131 register const INT_T outc = (Ch); \
132 if (PUTC (outc, s) == EOF || done == INT_MAX) \
133 { \
134 done = -1; \
135 goto all_done; \
136 } \
137 ++done; \
138 } \
139 while (0)
140
141 #define outstring(String, Len) \
142 do \
143 { \
144 assert ((size_t) done <= (size_t) INT_MAX); \
145 if ((size_t) PUT (s, (String), (Len)) != (size_t) (Len) \
146 || (size_t) INT_MAX - (size_t) done < (size_t) (Len)) \
147 { \
148 done = -1; \
149 goto all_done; \
150 } \
151 done += (Len); \
152 } \
153 while (0)
154
155 /* For handling long_double and longlong we use the same flag. If
156 `long' and `long long' are effectively the same type define it to
157 zero. */
158 #if LONG_MAX == LONG_LONG_MAX
159 # define is_longlong 0
160 #else
161 # define is_longlong is_long_double
162 #endif
163
164 /* If `long' and `int' is effectively the same type we don't have to
165 handle `long separately. */
166 #if INT_MAX == LONG_MAX
167 # define is_long_num 0
168 #else
169 # define is_long_num is_long
170 #endif
171
172
173 /* Global variables. */
174 static const CHAR_T null[] = L_("(null)");
175
176
177 /* Helper function to provide temporary buffering for unbuffered streams. */
178 static int buffered_vfprintf (FILE *stream, const CHAR_T *fmt, va_list)
179 __THROW __attribute__ ((noinline)) internal_function;
180
181 /* Handle unknown format specifier. */
182 static int printf_unknown (FILE *, const struct printf_info *,
183 const void *const *) __THROW;
184
185 /* Group digits of number string. */
186 #ifdef COMPILE_WPRINTF
187 static CHAR_T *group_number (CHAR_T *, CHAR_T *, const char *, wchar_t)
188 __THROW internal_function;
189 #else
190 static CHAR_T *group_number (CHAR_T *, CHAR_T *, const char *, const char *)
191 __THROW internal_function;
192 #endif
193
194
195 /* The function itself. */
196 int
197 vfprintf (FILE *s, const CHAR_T *format, va_list ap)
198 {
199 /* The character used as thousands separator. */
200 #ifdef COMPILE_WPRINTF
201 wchar_t thousands_sep = L'\0';
202 #else
203 const char *thousands_sep = NULL;
204 #endif
205
206 /* The string describing the size of groups of digits. */
207 const char *grouping;
208
209 /* Place to accumulate the result. */
210 int done;
211
212 /* Current character in format string. */
213 const UCHAR_T *f;
214
215 /* End of leading constant string. */
216 const UCHAR_T *lead_str_end;
217
218 /* Points to next format specifier. */
219 const UCHAR_T *end_of_spec;
220
221 /* Buffer intermediate results. */
222 CHAR_T work_buffer[1000];
223 CHAR_T *workstart = NULL;
224 CHAR_T *workend;
225
226 /* We have to save the original argument pointer. */
227 va_list ap_save;
228
229 /* Count number of specifiers we already processed. */
230 int nspecs_done;
231
232 /* For the %m format we may need the current `errno' value. */
233 int save_errno = errno;
234
235 /* 1 if format is in read-only memory, -1 if it is in writable memory,
236 0 if unknown. */
237 int readonly_format = 0;
238
239 /* This table maps a character into a number representing a
240 class. In each step there is a destination label for each
241 class. */
242 static const int jump_table[] =
243 {
244 /* ' ' */ 1, 0, 0, /* '#' */ 4,
245 0, /* '%' */ 14, 0, /* '\''*/ 6,
246 0, 0, /* '*' */ 7, /* '+' */ 2,
247 0, /* '-' */ 3, /* '.' */ 9, 0,
248 /* '0' */ 5, /* '1' */ 8, /* '2' */ 8, /* '3' */ 8,
249 /* '4' */ 8, /* '5' */ 8, /* '6' */ 8, /* '7' */ 8,
250 /* '8' */ 8, /* '9' */ 8, 0, 0,
251 0, 0, 0, 0,
252 0, /* 'A' */ 26, 0, /* 'C' */ 25,
253 0, /* 'E' */ 19, /* F */ 19, /* 'G' */ 19,
254 0, /* 'I' */ 29, 0, 0,
255 /* 'L' */ 12, 0, 0, 0,
256 0, 0, 0, /* 'S' */ 21,
257 0, 0, 0, 0,
258 /* 'X' */ 18, 0, /* 'Z' */ 13, 0,
259 0, 0, 0, 0,
260 0, /* 'a' */ 26, 0, /* 'c' */ 20,
261 /* 'd' */ 15, /* 'e' */ 19, /* 'f' */ 19, /* 'g' */ 19,
262 /* 'h' */ 10, /* 'i' */ 15, /* 'j' */ 28, 0,
263 /* 'l' */ 11, /* 'm' */ 24, /* 'n' */ 23, /* 'o' */ 17,
264 /* 'p' */ 22, /* 'q' */ 12, 0, /* 's' */ 21,
265 /* 't' */ 27, /* 'u' */ 16, 0, 0,
266 /* 'x' */ 18, 0, /* 'z' */ 13
267 };
268
269 #define NOT_IN_JUMP_RANGE(Ch) ((Ch) < L_(' ') || (Ch) > L_('z'))
270 #define CHAR_CLASS(Ch) (jump_table[(INT_T) (Ch) - L_(' ')])
271 #ifdef SHARED
272 /* 'int' is enough and it saves some space on 64 bit systems. */
273 # define JUMP_TABLE_TYPE const int
274 # define JUMP(ChExpr, table) \
275 do \
276 { \
277 int offset; \
278 void *__unbounded ptr; \
279 spec = (ChExpr); \
280 offset = NOT_IN_JUMP_RANGE (spec) ? REF (form_unknown) \
281 : table[CHAR_CLASS (spec)]; \
282 ptr = &&do_form_unknown + offset; \
283 goto *ptr; \
284 } \
285 while (0)
286 #else
287 # define JUMP_TABLE_TYPE const void *const
288 # define JUMP(ChExpr, table) \
289 do \
290 { \
291 const void *__unbounded ptr; \
292 spec = (ChExpr); \
293 ptr = NOT_IN_JUMP_RANGE (spec) ? REF (form_unknown) \
294 : table[CHAR_CLASS (spec)]; \
295 goto *ptr; \
296 } \
297 while (0)
298 #endif
299
300 #define STEP0_3_TABLE \
301 /* Step 0: at the beginning. */ \
302 static JUMP_TABLE_TYPE step0_jumps[30] = \
303 { \
304 REF (form_unknown), \
305 REF (flag_space), /* for ' ' */ \
306 REF (flag_plus), /* for '+' */ \
307 REF (flag_minus), /* for '-' */ \
308 REF (flag_hash), /* for '<hash>' */ \
309 REF (flag_zero), /* for '0' */ \
310 REF (flag_quote), /* for '\'' */ \
311 REF (width_asterics), /* for '*' */ \
312 REF (width), /* for '1'...'9' */ \
313 REF (precision), /* for '.' */ \
314 REF (mod_half), /* for 'h' */ \
315 REF (mod_long), /* for 'l' */ \
316 REF (mod_longlong), /* for 'L', 'q' */ \
317 REF (mod_size_t), /* for 'z', 'Z' */ \
318 REF (form_percent), /* for '%' */ \
319 REF (form_integer), /* for 'd', 'i' */ \
320 REF (form_unsigned), /* for 'u' */ \
321 REF (form_octal), /* for 'o' */ \
322 REF (form_hexa), /* for 'X', 'x' */ \
323 REF (form_float), /* for 'E', 'e', 'F', 'f', 'G', 'g' */ \
324 REF (form_character), /* for 'c' */ \
325 REF (form_string), /* for 's', 'S' */ \
326 REF (form_pointer), /* for 'p' */ \
327 REF (form_number), /* for 'n' */ \
328 REF (form_strerror), /* for 'm' */ \
329 REF (form_wcharacter), /* for 'C' */ \
330 REF (form_floathex), /* for 'A', 'a' */ \
331 REF (mod_ptrdiff_t), /* for 't' */ \
332 REF (mod_intmax_t), /* for 'j' */ \
333 REF (flag_i18n), /* for 'I' */ \
334 }; \
335 /* Step 1: after processing width. */ \
336 static JUMP_TABLE_TYPE step1_jumps[30] = \
337 { \
338 REF (form_unknown), \
339 REF (form_unknown), /* for ' ' */ \
340 REF (form_unknown), /* for '+' */ \
341 REF (form_unknown), /* for '-' */ \
342 REF (form_unknown), /* for '<hash>' */ \
343 REF (form_unknown), /* for '0' */ \
344 REF (form_unknown), /* for '\'' */ \
345 REF (form_unknown), /* for '*' */ \
346 REF (form_unknown), /* for '1'...'9' */ \
347 REF (precision), /* for '.' */ \
348 REF (mod_half), /* for 'h' */ \
349 REF (mod_long), /* for 'l' */ \
350 REF (mod_longlong), /* for 'L', 'q' */ \
351 REF (mod_size_t), /* for 'z', 'Z' */ \
352 REF (form_percent), /* for '%' */ \
353 REF (form_integer), /* for 'd', 'i' */ \
354 REF (form_unsigned), /* for 'u' */ \
355 REF (form_octal), /* for 'o' */ \
356 REF (form_hexa), /* for 'X', 'x' */ \
357 REF (form_float), /* for 'E', 'e', 'F', 'f', 'G', 'g' */ \
358 REF (form_character), /* for 'c' */ \
359 REF (form_string), /* for 's', 'S' */ \
360 REF (form_pointer), /* for 'p' */ \
361 REF (form_number), /* for 'n' */ \
362 REF (form_strerror), /* for 'm' */ \
363 REF (form_wcharacter), /* for 'C' */ \
364 REF (form_floathex), /* for 'A', 'a' */ \
365 REF (mod_ptrdiff_t), /* for 't' */ \
366 REF (mod_intmax_t), /* for 'j' */ \
367 REF (form_unknown) /* for 'I' */ \
368 }; \
369 /* Step 2: after processing precision. */ \
370 static JUMP_TABLE_TYPE step2_jumps[30] = \
371 { \
372 REF (form_unknown), \
373 REF (form_unknown), /* for ' ' */ \
374 REF (form_unknown), /* for '+' */ \
375 REF (form_unknown), /* for '-' */ \
376 REF (form_unknown), /* for '<hash>' */ \
377 REF (form_unknown), /* for '0' */ \
378 REF (form_unknown), /* for '\'' */ \
379 REF (form_unknown), /* for '*' */ \
380 REF (form_unknown), /* for '1'...'9' */ \
381 REF (form_unknown), /* for '.' */ \
382 REF (mod_half), /* for 'h' */ \
383 REF (mod_long), /* for 'l' */ \
384 REF (mod_longlong), /* for 'L', 'q' */ \
385 REF (mod_size_t), /* for 'z', 'Z' */ \
386 REF (form_percent), /* for '%' */ \
387 REF (form_integer), /* for 'd', 'i' */ \
388 REF (form_unsigned), /* for 'u' */ \
389 REF (form_octal), /* for 'o' */ \
390 REF (form_hexa), /* for 'X', 'x' */ \
391 REF (form_float), /* for 'E', 'e', 'F', 'f', 'G', 'g' */ \
392 REF (form_character), /* for 'c' */ \
393 REF (form_string), /* for 's', 'S' */ \
394 REF (form_pointer), /* for 'p' */ \
395 REF (form_number), /* for 'n' */ \
396 REF (form_strerror), /* for 'm' */ \
397 REF (form_wcharacter), /* for 'C' */ \
398 REF (form_floathex), /* for 'A', 'a' */ \
399 REF (mod_ptrdiff_t), /* for 't' */ \
400 REF (mod_intmax_t), /* for 'j' */ \
401 REF (form_unknown) /* for 'I' */ \
402 }; \
403 /* Step 3a: after processing first 'h' modifier. */ \
404 static JUMP_TABLE_TYPE step3a_jumps[30] = \
405 { \
406 REF (form_unknown), \
407 REF (form_unknown), /* for ' ' */ \
408 REF (form_unknown), /* for '+' */ \
409 REF (form_unknown), /* for '-' */ \
410 REF (form_unknown), /* for '<hash>' */ \
411 REF (form_unknown), /* for '0' */ \
412 REF (form_unknown), /* for '\'' */ \
413 REF (form_unknown), /* for '*' */ \
414 REF (form_unknown), /* for '1'...'9' */ \
415 REF (form_unknown), /* for '.' */ \
416 REF (mod_halfhalf), /* for 'h' */ \
417 REF (form_unknown), /* for 'l' */ \
418 REF (form_unknown), /* for 'L', 'q' */ \
419 REF (form_unknown), /* for 'z', 'Z' */ \
420 REF (form_percent), /* for '%' */ \
421 REF (form_integer), /* for 'd', 'i' */ \
422 REF (form_unsigned), /* for 'u' */ \
423 REF (form_octal), /* for 'o' */ \
424 REF (form_hexa), /* for 'X', 'x' */ \
425 REF (form_unknown), /* for 'E', 'e', 'F', 'f', 'G', 'g' */ \
426 REF (form_unknown), /* for 'c' */ \
427 REF (form_unknown), /* for 's', 'S' */ \
428 REF (form_unknown), /* for 'p' */ \
429 REF (form_number), /* for 'n' */ \
430 REF (form_unknown), /* for 'm' */ \
431 REF (form_unknown), /* for 'C' */ \
432 REF (form_unknown), /* for 'A', 'a' */ \
433 REF (form_unknown), /* for 't' */ \
434 REF (form_unknown), /* for 'j' */ \
435 REF (form_unknown) /* for 'I' */ \
436 }; \
437 /* Step 3b: after processing first 'l' modifier. */ \
438 static JUMP_TABLE_TYPE step3b_jumps[30] = \
439 { \
440 REF (form_unknown), \
441 REF (form_unknown), /* for ' ' */ \
442 REF (form_unknown), /* for '+' */ \
443 REF (form_unknown), /* for '-' */ \
444 REF (form_unknown), /* for '<hash>' */ \
445 REF (form_unknown), /* for '0' */ \
446 REF (form_unknown), /* for '\'' */ \
447 REF (form_unknown), /* for '*' */ \
448 REF (form_unknown), /* for '1'...'9' */ \
449 REF (form_unknown), /* for '.' */ \
450 REF (form_unknown), /* for 'h' */ \
451 REF (mod_longlong), /* for 'l' */ \
452 REF (form_unknown), /* for 'L', 'q' */ \
453 REF (form_unknown), /* for 'z', 'Z' */ \
454 REF (form_percent), /* for '%' */ \
455 REF (form_integer), /* for 'd', 'i' */ \
456 REF (form_unsigned), /* for 'u' */ \
457 REF (form_octal), /* for 'o' */ \
458 REF (form_hexa), /* for 'X', 'x' */ \
459 REF (form_float), /* for 'E', 'e', 'F', 'f', 'G', 'g' */ \
460 REF (form_character), /* for 'c' */ \
461 REF (form_string), /* for 's', 'S' */ \
462 REF (form_pointer), /* for 'p' */ \
463 REF (form_number), /* for 'n' */ \
464 REF (form_strerror), /* for 'm' */ \
465 REF (form_wcharacter), /* for 'C' */ \
466 REF (form_floathex), /* for 'A', 'a' */ \
467 REF (form_unknown), /* for 't' */ \
468 REF (form_unknown), /* for 'j' */ \
469 REF (form_unknown) /* for 'I' */ \
470 }
471
472 #define STEP4_TABLE \
473 /* Step 4: processing format specifier. */ \
474 static JUMP_TABLE_TYPE step4_jumps[30] = \
475 { \
476 REF (form_unknown), \
477 REF (form_unknown), /* for ' ' */ \
478 REF (form_unknown), /* for '+' */ \
479 REF (form_unknown), /* for '-' */ \
480 REF (form_unknown), /* for '<hash>' */ \
481 REF (form_unknown), /* for '0' */ \
482 REF (form_unknown), /* for '\'' */ \
483 REF (form_unknown), /* for '*' */ \
484 REF (form_unknown), /* for '1'...'9' */ \
485 REF (form_unknown), /* for '.' */ \
486 REF (form_unknown), /* for 'h' */ \
487 REF (form_unknown), /* for 'l' */ \
488 REF (form_unknown), /* for 'L', 'q' */ \
489 REF (form_unknown), /* for 'z', 'Z' */ \
490 REF (form_percent), /* for '%' */ \
491 REF (form_integer), /* for 'd', 'i' */ \
492 REF (form_unsigned), /* for 'u' */ \
493 REF (form_octal), /* for 'o' */ \
494 REF (form_hexa), /* for 'X', 'x' */ \
495 REF (form_float), /* for 'E', 'e', 'F', 'f', 'G', 'g' */ \
496 REF (form_character), /* for 'c' */ \
497 REF (form_string), /* for 's', 'S' */ \
498 REF (form_pointer), /* for 'p' */ \
499 REF (form_number), /* for 'n' */ \
500 REF (form_strerror), /* for 'm' */ \
501 REF (form_wcharacter), /* for 'C' */ \
502 REF (form_floathex), /* for 'A', 'a' */ \
503 REF (form_unknown), /* for 't' */ \
504 REF (form_unknown), /* for 'j' */ \
505 REF (form_unknown) /* for 'I' */ \
506 }
507
508
509 #define process_arg(fspec) \
510 /* Start real work. We know about all flags and modifiers and \
511 now process the wanted format specifier. */ \
512 LABEL (form_percent): \
513 /* Write a literal "%". */ \
514 outchar (L_('%')); \
515 break; \
516 \
517 LABEL (form_integer): \
518 /* Signed decimal integer. */ \
519 base = 10; \
520 \
521 if (is_longlong) \
522 { \
523 long long int signed_number; \
524 \
525 if (fspec == NULL) \
526 signed_number = va_arg (ap, long long int); \
527 else \
528 signed_number = args_value[fspec->data_arg].pa_long_long_int; \
529 \
530 is_negative = signed_number < 0; \
531 number.longlong = is_negative ? (- signed_number) : signed_number; \
532 \
533 goto LABEL (longlong_number); \
534 } \
535 else \
536 { \
537 long int signed_number; \
538 \
539 if (fspec == NULL) \
540 { \
541 if (is_long_num) \
542 signed_number = va_arg (ap, long int); \
543 else if (is_char) \
544 signed_number = (signed char) va_arg (ap, unsigned int); \
545 else if (!is_short) \
546 signed_number = va_arg (ap, int); \
547 else \
548 signed_number = (short int) va_arg (ap, unsigned int); \
549 } \
550 else \
551 if (is_long_num) \
552 signed_number = args_value[fspec->data_arg].pa_long_int; \
553 else if (is_char) \
554 signed_number = (signed char) \
555 args_value[fspec->data_arg].pa_u_int; \
556 else if (!is_short) \
557 signed_number = args_value[fspec->data_arg].pa_int; \
558 else \
559 signed_number = (short int) \
560 args_value[fspec->data_arg].pa_u_int; \
561 \
562 is_negative = signed_number < 0; \
563 number.word = is_negative ? (- signed_number) : signed_number; \
564 \
565 goto LABEL (number); \
566 } \
567 /* NOTREACHED */ \
568 \
569 LABEL (form_unsigned): \
570 /* Unsigned decimal integer. */ \
571 base = 10; \
572 goto LABEL (unsigned_number); \
573 /* NOTREACHED */ \
574 \
575 LABEL (form_octal): \
576 /* Unsigned octal integer. */ \
577 base = 8; \
578 goto LABEL (unsigned_number); \
579 /* NOTREACHED */ \
580 \
581 LABEL (form_hexa): \
582 /* Unsigned hexadecimal integer. */ \
583 base = 16; \
584 \
585 LABEL (unsigned_number): /* Unsigned number of base BASE. */ \
586 \
587 /* ISO specifies the `+' and ` ' flags only for signed \
588 conversions. */ \
589 is_negative = 0; \
590 showsign = 0; \
591 space = 0; \
592 \
593 if (is_longlong) \
594 { \
595 if (fspec == NULL) \
596 number.longlong = va_arg (ap, unsigned long long int); \
597 else \
598 number.longlong = args_value[fspec->data_arg].pa_u_long_long_int; \
599 \
600 LABEL (longlong_number): \
601 if (prec < 0) \
602 /* Supply a default precision if none was given. */ \
603 prec = 1; \
604 else \
605 /* We have to take care for the '0' flag. If a precision \
606 is given it must be ignored. */ \
607 pad = L_(' '); \
608 \
609 /* If the precision is 0 and the number is 0 nothing has to \
610 be written for the number, except for the 'o' format in \
611 alternate form. */ \
612 if (prec == 0 && number.longlong == 0) \
613 { \
614 string = workend; \
615 if (base == 8 && alt) \
616 *--string = L_('0'); \
617 } \
618 else \
619 { \
620 /* Put the number in WORK. */ \
621 string = _itoa (number.longlong, workend, base, \
622 spec == L_('X')); \
623 if (group && grouping) \
624 string = group_number (string, workend, grouping, \
625 thousands_sep); \
626 \
627 if (use_outdigits && base == 10) \
628 string = _i18n_number_rewrite (string, workend); \
629 } \
630 /* Simplify further test for num != 0. */ \
631 number.word = number.longlong != 0; \
632 } \
633 else \
634 { \
635 if (fspec == NULL) \
636 { \
637 if (is_long_num) \
638 number.word = va_arg (ap, unsigned long int); \
639 else if (is_char) \
640 number.word = (unsigned char) va_arg (ap, unsigned int); \
641 else if (!is_short) \
642 number.word = va_arg (ap, unsigned int); \
643 else \
644 number.word = (unsigned short int) va_arg (ap, unsigned int); \
645 } \
646 else \
647 if (is_long_num) \
648 number.word = args_value[fspec->data_arg].pa_u_long_int; \
649 else if (is_char) \
650 number.word = (unsigned char) \
651 args_value[fspec->data_arg].pa_u_int; \
652 else if (!is_short) \
653 number.word = args_value[fspec->data_arg].pa_u_int; \
654 else \
655 number.word = (unsigned short int) \
656 args_value[fspec->data_arg].pa_u_int; \
657 \
658 LABEL (number): \
659 if (prec < 0) \
660 /* Supply a default precision if none was given. */ \
661 prec = 1; \
662 else \
663 /* We have to take care for the '0' flag. If a precision \
664 is given it must be ignored. */ \
665 pad = L_(' '); \
666 \
667 /* If the precision is 0 and the number is 0 nothing has to \
668 be written for the number, except for the 'o' format in \
669 alternate form. */ \
670 if (prec == 0 && number.word == 0) \
671 { \
672 string = workend; \
673 if (base == 8 && alt) \
674 *--string = L_('0'); \
675 } \
676 else \
677 { \
678 /* Put the number in WORK. */ \
679 string = _itoa_word (number.word, workend, base, \
680 spec == L_('X')); \
681 if (group && grouping) \
682 string = group_number (string, workend, grouping, \
683 thousands_sep); \
684 \
685 if (use_outdigits && base == 10) \
686 string = _i18n_number_rewrite (string, workend); \
687 } \
688 } \
689 \
690 if (prec <= workend - string && number.word != 0 && alt && base == 8) \
691 /* Add octal marker. */ \
692 *--string = L_('0'); \
693 \
694 prec = MAX (0, prec - (workend - string)); \
695 \
696 if (!left) \
697 { \
698 width -= workend - string + prec; \
699 \
700 if (number.word != 0 && alt && base == 16) \
701 /* Account for 0X hex marker. */ \
702 width -= 2; \
703 \
704 if (is_negative || showsign || space) \
705 --width; \
706 \
707 if (pad == L_(' ')) \
708 { \
709 PAD (L_(' ')); \
710 width = 0; \
711 } \
712 \
713 if (is_negative) \
714 outchar (L_('-')); \
715 else if (showsign) \
716 outchar (L_('+')); \
717 else if (space) \
718 outchar (L_(' ')); \
719 \
720 if (number.word != 0 && alt && base == 16) \
721 { \
722 outchar (L_('0')); \
723 outchar (spec); \
724 } \
725 \
726 width += prec; \
727 PAD (L_('0')); \
728 \
729 outstring (string, workend - string); \
730 \
731 break; \
732 } \
733 else \
734 { \
735 if (is_negative) \
736 { \
737 outchar (L_('-')); \
738 --width; \
739 } \
740 else if (showsign) \
741 { \
742 outchar (L_('+')); \
743 --width; \
744 } \
745 else if (space) \
746 { \
747 outchar (L_(' ')); \
748 --width; \
749 } \
750 \
751 if (number.word != 0 && alt && base == 16) \
752 { \
753 outchar (L_('0')); \
754 outchar (spec); \
755 width -= 2; \
756 } \
757 \
758 width -= workend - string + prec; \
759 \
760 if (prec > 0) \
761 { \
762 int temp = width; \
763 width = prec; \
764 PAD (L_('0')); \
765 width = temp; \
766 } \
767 \
768 outstring (string, workend - string); \
769 \
770 PAD (L_(' ')); \
771 break; \
772 } \
773 \
774 LABEL (form_float): \
775 { \
776 /* Floating-point number. This is handled by printf_fp.c. */ \
777 const void *ptr; \
778 int function_done; \
779 \
780 if (fspec == NULL) \
781 { \
782 if (__ldbl_is_dbl) \
783 is_long_double = 0; \
784 \
785 struct printf_info info = { .prec = prec, \
786 .width = width, \
787 .spec = spec, \
788 .is_long_double = is_long_double, \
789 .is_short = is_short, \
790 .is_long = is_long, \
791 .alt = alt, \
792 .space = space, \
793 .left = left, \
794 .showsign = showsign, \
795 .group = group, \
796 .pad = pad, \
797 .extra = 0, \
798 .i18n = use_outdigits, \
799 .wide = sizeof (CHAR_T) != 1 }; \
800 \
801 if (is_long_double) \
802 the_arg.pa_long_double = va_arg (ap, long double); \
803 else \
804 the_arg.pa_double = va_arg (ap, double); \
805 ptr = (const void *) &the_arg; \
806 \
807 function_done = __printf_fp (s, &info, &ptr); \
808 } \
809 else \
810 { \
811 ptr = (const void *) &args_value[fspec->data_arg]; \
812 if (__ldbl_is_dbl) \
813 { \
814 fspec->data_arg_type = PA_DOUBLE; \
815 fspec->info.is_long_double = 0; \
816 } \
817 \
818 function_done = __printf_fp (s, &fspec->info, &ptr); \
819 } \
820 \
821 if (function_done < 0) \
822 { \
823 /* Error in print handler. */ \
824 done = -1; \
825 goto all_done; \
826 } \
827 \
828 done_add (function_done); \
829 } \
830 break; \
831 \
832 LABEL (form_floathex): \
833 { \
834 /* Floating point number printed as hexadecimal number. */ \
835 const void *ptr; \
836 int function_done; \
837 \
838 if (fspec == NULL) \
839 { \
840 if (__ldbl_is_dbl) \
841 is_long_double = 0; \
842 \
843 struct printf_info info = { .prec = prec, \
844 .width = width, \
845 .spec = spec, \
846 .is_long_double = is_long_double, \
847 .is_short = is_short, \
848 .is_long = is_long, \
849 .alt = alt, \
850 .space = space, \
851 .left = left, \
852 .showsign = showsign, \
853 .group = group, \
854 .pad = pad, \
855 .extra = 0, \
856 .wide = sizeof (CHAR_T) != 1 }; \
857 \
858 if (is_long_double) \
859 the_arg.pa_long_double = va_arg (ap, long double); \
860 else \
861 the_arg.pa_double = va_arg (ap, double); \
862 ptr = (const void *) &the_arg; \
863 \
864 function_done = __printf_fphex (s, &info, &ptr); \
865 } \
866 else \
867 { \
868 ptr = (const void *) &args_value[fspec->data_arg]; \
869 if (__ldbl_is_dbl) \
870 fspec->info.is_long_double = 0; \
871 \
872 function_done = __printf_fphex (s, &fspec->info, &ptr); \
873 } \
874 \
875 if (function_done < 0) \
876 { \
877 /* Error in print handler. */ \
878 done = -1; \
879 goto all_done; \
880 } \
881 \
882 done_add (function_done); \
883 } \
884 break; \
885 \
886 LABEL (form_pointer): \
887 /* Generic pointer. */ \
888 { \
889 const void *ptr; \
890 if (fspec == NULL) \
891 ptr = va_arg (ap, void *); \
892 else \
893 ptr = args_value[fspec->data_arg].pa_pointer; \
894 if (ptr != NULL) \
895 { \
896 /* If the pointer is not NULL, write it as a %#x spec. */ \
897 base = 16; \
898 number.word = (unsigned long int) ptr; \
899 is_negative = 0; \
900 alt = 1; \
901 group = 0; \
902 spec = L_('x'); \
903 goto LABEL (number); \
904 } \
905 else \
906 { \
907 /* Write "(nil)" for a nil pointer. */ \
908 string = (CHAR_T *) L_("(nil)"); \
909 /* Make sure the full string "(nil)" is printed. */ \
910 if (prec < 5) \
911 prec = 5; \
912 is_long = 0; /* This is no wide-char string. */ \
913 goto LABEL (print_string); \
914 } \
915 } \
916 /* NOTREACHED */ \
917 \
918 LABEL (form_number): \
919 if (s->_flags2 & _IO_FLAGS2_FORTIFY) \
920 { \
921 if (! readonly_format) \
922 { \
923 extern int __readonly_area (const void *, size_t) \
924 attribute_hidden; \
925 readonly_format \
926 = __readonly_area (format, ((STR_LEN (format) + 1) \
927 * sizeof (CHAR_T))); \
928 } \
929 if (readonly_format < 0) \
930 __libc_fatal ("*** %n in writable segment detected ***\n"); \
931 } \
932 /* Answer the count of characters written. */ \
933 if (fspec == NULL) \
934 { \
935 if (is_longlong) \
936 *(long long int *) va_arg (ap, void *) = done; \
937 else if (is_long_num) \
938 *(long int *) va_arg (ap, void *) = done; \
939 else if (is_char) \
940 *(char *) va_arg (ap, void *) = done; \
941 else if (!is_short) \
942 *(int *) va_arg (ap, void *) = done; \
943 else \
944 *(short int *) va_arg (ap, void *) = done; \
945 } \
946 else \
947 if (is_longlong) \
948 *(long long int *) args_value[fspec->data_arg].pa_pointer = done; \
949 else if (is_long_num) \
950 *(long int *) args_value[fspec->data_arg].pa_pointer = done; \
951 else if (is_char) \
952 *(char *) args_value[fspec->data_arg].pa_pointer = done; \
953 else if (!is_short) \
954 *(int *) args_value[fspec->data_arg].pa_pointer = done; \
955 else \
956 *(short int *) args_value[fspec->data_arg].pa_pointer = done; \
957 break; \
958 \
959 LABEL (form_strerror): \
960 /* Print description of error ERRNO. */ \
961 string = \
962 (CHAR_T *) __strerror_r (save_errno, (char *) work_buffer, \
963 sizeof work_buffer); \
964 is_long = 0; /* This is no wide-char string. */ \
965 goto LABEL (print_string)
966
967 #ifdef COMPILE_WPRINTF
968 # define process_string_arg(fspec) \
969 LABEL (form_character): \
970 /* Character. */ \
971 if (is_long) \
972 goto LABEL (form_wcharacter); \
973 --width; /* Account for the character itself. */ \
974 if (!left) \
975 PAD (L' '); \
976 if (fspec == NULL) \
977 outchar (__btowc ((unsigned char) va_arg (ap, int))); /* Promoted. */ \
978 else \
979 outchar (__btowc ((unsigned char) \
980 args_value[fspec->data_arg].pa_int)); \
981 if (left) \
982 PAD (L' '); \
983 break; \
984 \
985 LABEL (form_wcharacter): \
986 { \
987 /* Wide character. */ \
988 --width; \
989 if (!left) \
990 PAD (L' '); \
991 if (fspec == NULL) \
992 outchar (va_arg (ap, wchar_t)); \
993 else \
994 outchar (args_value[fspec->data_arg].pa_wchar); \
995 if (left) \
996 PAD (L' '); \
997 } \
998 break; \
999 \
1000 LABEL (form_string): \
1001 { \
1002 size_t len; \
1003 int string_malloced; \
1004 \
1005 /* The string argument could in fact be `char *' or `wchar_t *'. \
1006 But this should not make a difference here. */ \
1007 if (fspec == NULL) \
1008 string = (CHAR_T *) va_arg (ap, const wchar_t *); \
1009 else \
1010 string = (CHAR_T *) args_value[fspec->data_arg].pa_wstring; \
1011 \
1012 /* Entry point for printing other strings. */ \
1013 LABEL (print_string): \
1014 \
1015 string_malloced = 0; \
1016 if (string == NULL) \
1017 { \
1018 /* Write "(null)" if there's space. */ \
1019 if (prec == -1 \
1020 || prec >= (int) (sizeof (null) / sizeof (null[0])) - 1) \
1021 { \
1022 string = (CHAR_T *) null; \
1023 len = (sizeof (null) / sizeof (null[0])) - 1; \
1024 } \
1025 else \
1026 { \
1027 string = (CHAR_T *) L""; \
1028 len = 0; \
1029 } \
1030 } \
1031 else if (!is_long && spec != L_('S')) \
1032 { \
1033 /* This is complicated. We have to transform the multibyte \
1034 string into a wide character string. */ \
1035 const char *mbs = (const char *) string; \
1036 mbstate_t mbstate; \
1037 \
1038 len = prec != -1 ? __strnlen (mbs, (size_t) prec) : strlen (mbs); \
1039 \
1040 /* Allocate dynamically an array which definitely is long \
1041 enough for the wide character version. Each byte in the \
1042 multi-byte string can produce at most one wide character. */ \
1043 if (__libc_use_alloca (len * sizeof (wchar_t))) \
1044 string = (CHAR_T *) alloca (len * sizeof (wchar_t)); \
1045 else if ((string = (CHAR_T *) malloc (len * sizeof (wchar_t))) \
1046 == NULL) \
1047 { \
1048 done = -1; \
1049 goto all_done; \
1050 } \
1051 else \
1052 string_malloced = 1; \
1053 \
1054 memset (&mbstate, '\0', sizeof (mbstate_t)); \
1055 len = __mbsrtowcs (string, &mbs, len, &mbstate); \
1056 if (len == (size_t) -1) \
1057 { \
1058 /* Illegal multibyte character. */ \
1059 done = -1; \
1060 goto all_done; \
1061 } \
1062 } \
1063 else \
1064 { \
1065 if (prec != -1) \
1066 /* Search for the end of the string, but don't search past \
1067 the length specified by the precision. */ \
1068 len = __wcsnlen (string, prec); \
1069 else \
1070 len = __wcslen (string); \
1071 } \
1072 \
1073 if ((width -= len) < 0) \
1074 { \
1075 outstring (string, len); \
1076 break; \
1077 } \
1078 \
1079 if (!left) \
1080 PAD (L' '); \
1081 outstring (string, len); \
1082 if (left) \
1083 PAD (L' '); \
1084 if (__builtin_expect (string_malloced, 0)) \
1085 free (string); \
1086 } \
1087 break;
1088 #else
1089 # define process_string_arg(fspec) \
1090 LABEL (form_character): \
1091 /* Character. */ \
1092 if (is_long) \
1093 goto LABEL (form_wcharacter); \
1094 --width; /* Account for the character itself. */ \
1095 if (!left) \
1096 PAD (' '); \
1097 if (fspec == NULL) \
1098 outchar ((unsigned char) va_arg (ap, int)); /* Promoted. */ \
1099 else \
1100 outchar ((unsigned char) args_value[fspec->data_arg].pa_int); \
1101 if (left) \
1102 PAD (' '); \
1103 break; \
1104 \
1105 LABEL (form_wcharacter): \
1106 { \
1107 /* Wide character. */ \
1108 char buf[MB_CUR_MAX]; \
1109 mbstate_t mbstate; \
1110 size_t len; \
1111 \
1112 memset (&mbstate, '\0', sizeof (mbstate_t)); \
1113 len = __wcrtomb (buf, (fspec == NULL ? va_arg (ap, wchar_t) \
1114 : args_value[fspec->data_arg].pa_wchar), \
1115 &mbstate); \
1116 if (len == (size_t) -1) \
1117 { \
1118 /* Something went wron gduring the conversion. Bail out. */ \
1119 done = -1; \
1120 goto all_done; \
1121 } \
1122 width -= len; \
1123 if (!left) \
1124 PAD (' '); \
1125 outstring (buf, len); \
1126 if (left) \
1127 PAD (' '); \
1128 } \
1129 break; \
1130 \
1131 LABEL (form_string): \
1132 { \
1133 size_t len; \
1134 int string_malloced; \
1135 \
1136 /* The string argument could in fact be `char *' or `wchar_t *'. \
1137 But this should not make a difference here. */ \
1138 if (fspec == NULL) \
1139 string = (char *) va_arg (ap, const char *); \
1140 else \
1141 string = (char *) args_value[fspec->data_arg].pa_string; \
1142 \
1143 /* Entry point for printing other strings. */ \
1144 LABEL (print_string): \
1145 \
1146 string_malloced = 0; \
1147 if (string == NULL) \
1148 { \
1149 /* Write "(null)" if there's space. */ \
1150 if (prec == -1 || prec >= (int) sizeof (null) - 1) \
1151 { \
1152 string = (char *) null; \
1153 len = sizeof (null) - 1; \
1154 } \
1155 else \
1156 { \
1157 string = (char *) ""; \
1158 len = 0; \
1159 } \
1160 } \
1161 else if (!is_long && spec != L_('S')) \
1162 { \
1163 if (prec != -1) \
1164 { \
1165 /* Search for the end of the string, but don't search past \
1166 the length (in bytes) specified by the precision. Also \
1167 don't use incomplete characters. */ \
1168 if (_NL_CURRENT_WORD (LC_CTYPE, _NL_CTYPE_MB_CUR_MAX) == 1) \
1169 len = __strnlen (string, prec); \
1170 else \
1171 { \
1172 /* In case we have a multibyte character set the \
1173 situation is more complicated. We must not copy \
1174 bytes at the end which form an incomplete character. */\
1175 size_t ignore_size = (unsigned) prec > 1024 ? 1024 : prec;\
1176 wchar_t ignore[ignore_size]; \
1177 const char *str2 = string; \
1178 const char *strend = string + prec; \
1179 if (strend < string) \
1180 strend = (const char *) UINTPTR_MAX; \
1181 \
1182 mbstate_t ps; \
1183 memset (&ps, '\0', sizeof (ps)); \
1184 \
1185 while (str2 != NULL && str2 < strend) \
1186 if (__mbsnrtowcs (ignore, &str2, strend - str2, \
1187 ignore_size, &ps) == (size_t) -1) \
1188 { \
1189 done = -1; \
1190 goto all_done; \
1191 } \
1192 \
1193 if (str2 == NULL) \
1194 len = strlen (string); \
1195 else \
1196 len = str2 - string - (ps.__count & 7); \
1197 } \
1198 } \
1199 else \
1200 len = strlen (string); \
1201 } \
1202 else \
1203 { \
1204 const wchar_t *s2 = (const wchar_t *) string; \
1205 mbstate_t mbstate; \
1206 \
1207 memset (&mbstate, '\0', sizeof (mbstate_t)); \
1208 \
1209 if (prec >= 0) \
1210 { \
1211 /* The string `s2' might not be NUL terminated. */ \
1212 if (__libc_use_alloca (prec)) \
1213 string = (char *) alloca (prec); \
1214 else if ((string = (char *) malloc (prec)) == NULL) \
1215 { \
1216 done = -1; \
1217 goto all_done; \
1218 } \
1219 else \
1220 string_malloced = 1; \
1221 len = __wcsrtombs (string, &s2, prec, &mbstate); \
1222 } \
1223 else \
1224 { \
1225 len = __wcsrtombs (NULL, &s2, 0, &mbstate); \
1226 if (len != (size_t) -1) \
1227 { \
1228 assert (__mbsinit (&mbstate)); \
1229 s2 = (const wchar_t *) string; \
1230 if (__libc_use_alloca (len + 1)) \
1231 string = (char *) alloca (len + 1); \
1232 else if ((string = (char *) malloc (len + 1)) == NULL) \
1233 { \
1234 done = -1; \
1235 goto all_done; \
1236 } \
1237 else \
1238 string_malloced = 1; \
1239 (void) __wcsrtombs (string, &s2, len + 1, &mbstate); \
1240 } \
1241 } \
1242 \
1243 if (len == (size_t) -1) \
1244 { \
1245 /* Illegal wide-character string. */ \
1246 done = -1; \
1247 goto all_done; \
1248 } \
1249 } \
1250 \
1251 if ((width -= len) < 0) \
1252 { \
1253 outstring (string, len); \
1254 break; \
1255 } \
1256 \
1257 if (!left) \
1258 PAD (' '); \
1259 outstring (string, len); \
1260 if (left) \
1261 PAD (' '); \
1262 if (__builtin_expect (string_malloced, 0)) \
1263 free (string); \
1264 } \
1265 break;
1266 #endif
1267
1268 /* Orient the stream. */
1269 #ifdef ORIENT
1270 ORIENT;
1271 #endif
1272
1273 /* Sanity check of arguments. */
1274 ARGCHECK (s, format);
1275
1276 #ifdef ORIENT
1277 /* Check for correct orientation. */
1278 if (_IO_vtable_offset (s) == 0 &&
1279 _IO_fwide (s, sizeof (CHAR_T) == 1 ? -1 : 1)
1280 != (sizeof (CHAR_T) == 1 ? -1 : 1))
1281 /* The stream is already oriented otherwise. */
1282 return EOF;
1283 #endif
1284
1285 if (UNBUFFERED_P (s))
1286 /* Use a helper function which will allocate a local temporary buffer
1287 for the stream and then call us again. */
1288 return buffered_vfprintf (s, format, ap);
1289
1290 /* Initialize local variables. */
1291 done = 0;
1292 grouping = (const char *) -1;
1293 #ifdef __va_copy
1294 /* This macro will be available soon in gcc's <stdarg.h>. We need it
1295 since on some systems `va_list' is not an integral type. */
1296 __va_copy (ap_save, ap);
1297 #else
1298 ap_save = ap;
1299 #endif
1300 nspecs_done = 0;
1301
1302 #ifdef COMPILE_WPRINTF
1303 /* Find the first format specifier. */
1304 f = lead_str_end = __find_specwc ((const UCHAR_T *) format);
1305 #else
1306 /* Find the first format specifier. */
1307 f = lead_str_end = __find_specmb ((const UCHAR_T *) format);
1308 #endif
1309
1310 /* Lock stream. */
1311 _IO_cleanup_region_start ((void (*) (void *)) &_IO_funlockfile, s);
1312 _IO_flockfile (s);
1313
1314 /* Write the literal text before the first format. */
1315 outstring ((const UCHAR_T *) format,
1316 lead_str_end - (const UCHAR_T *) format);
1317
1318 /* If we only have to print a simple string, return now. */
1319 if (*f == L_('\0'))
1320 goto all_done;
1321
1322 /* Process whole format string. */
1323 do
1324 {
1325 #ifdef SHARED
1326 # define REF(Name) &&do_##Name - &&do_form_unknown
1327 #else
1328 # define REF(Name) &&do_##Name
1329 #endif
1330 #define LABEL(Name) do_##Name
1331 STEP0_3_TABLE;
1332 STEP4_TABLE;
1333
1334 union printf_arg *args_value; /* This is not used here but ... */
1335 int is_negative; /* Flag for negative number. */
1336 union
1337 {
1338 unsigned long long int longlong;
1339 unsigned long int word;
1340 } number;
1341 int base;
1342 union printf_arg the_arg;
1343 CHAR_T *string; /* Pointer to argument string. */
1344 int alt = 0; /* Alternate format. */
1345 int space = 0; /* Use space prefix if no sign is needed. */
1346 int left = 0; /* Left-justify output. */
1347 int showsign = 0; /* Always begin with plus or minus sign. */
1348 int group = 0; /* Print numbers according grouping rules. */
1349 int is_long_double = 0; /* Argument is long double/ long long int. */
1350 int is_short = 0; /* Argument is short int. */
1351 int is_long = 0; /* Argument is long int. */
1352 int is_char = 0; /* Argument is promoted (unsigned) char. */
1353 int width = 0; /* Width of output; 0 means none specified. */
1354 int prec = -1; /* Precision of output; -1 means none specified. */
1355 /* This flag is set by the 'I' modifier and selects the use of the
1356 `outdigits' as determined by the current locale. */
1357 int use_outdigits = 0;
1358 UCHAR_T pad = L_(' ');/* Padding character. */
1359 CHAR_T spec;
1360
1361 workstart = NULL;
1362 workend = &work_buffer[sizeof (work_buffer) / sizeof (CHAR_T)];
1363
1364 /* Get current character in format string. */
1365 JUMP (*++f, step0_jumps);
1366
1367 /* ' ' flag. */
1368 LABEL (flag_space):
1369 space = 1;
1370 JUMP (*++f, step0_jumps);
1371
1372 /* '+' flag. */
1373 LABEL (flag_plus):
1374 showsign = 1;
1375 JUMP (*++f, step0_jumps);
1376
1377 /* The '-' flag. */
1378 LABEL (flag_minus):
1379 left = 1;
1380 pad = L_(' ');
1381 JUMP (*++f, step0_jumps);
1382
1383 /* The '#' flag. */
1384 LABEL (flag_hash):
1385 alt = 1;
1386 JUMP (*++f, step0_jumps);
1387
1388 /* The '0' flag. */
1389 LABEL (flag_zero):
1390 if (!left)
1391 pad = L_('0');
1392 JUMP (*++f, step0_jumps);
1393
1394 /* The '\'' flag. */
1395 LABEL (flag_quote):
1396 group = 1;
1397
1398 if (grouping == (const char *) -1)
1399 {
1400 #ifdef COMPILE_WPRINTF
1401 thousands_sep = _NL_CURRENT_WORD (LC_NUMERIC,
1402 _NL_NUMERIC_THOUSANDS_SEP_WC);
1403 #else
1404 thousands_sep = _NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP);
1405 #endif
1406
1407 grouping = _NL_CURRENT (LC_NUMERIC, GROUPING);
1408 if (*grouping == '\0' || *grouping == CHAR_MAX
1409 #ifdef COMPILE_WPRINTF
1410 || thousands_sep == L'\0'
1411 #else
1412 || *thousands_sep == '\0'
1413 #endif
1414 )
1415 grouping = NULL;
1416 }
1417 JUMP (*++f, step0_jumps);
1418
1419 LABEL (flag_i18n):
1420 use_outdigits = 1;
1421 JUMP (*++f, step0_jumps);
1422
1423 /* Get width from argument. */
1424 LABEL (width_asterics):
1425 {
1426 const UCHAR_T *tmp; /* Temporary value. */
1427
1428 tmp = ++f;
1429 if (ISDIGIT (*tmp) && read_int (&tmp) && *tmp == L_('$'))
1430 /* The width comes from a positional parameter. */
1431 goto do_positional;
1432
1433 width = va_arg (ap, int);
1434
1435 /* Negative width means left justified. */
1436 if (width < 0)
1437 {
1438 width = -width;
1439 pad = L_(' ');
1440 left = 1;
1441 }
1442
1443 if (width + 32 >= (int) (sizeof (work_buffer)
1444 / sizeof (work_buffer[0])))
1445 {
1446 /* We have to use a special buffer. The "32" is just a safe
1447 bet for all the output which is not counted in the width. */
1448 if (__libc_use_alloca ((width + 32) * sizeof (CHAR_T)))
1449 workend = ((CHAR_T *) alloca ((width + 32) * sizeof (CHAR_T))
1450 + (width + 32));
1451 else
1452 {
1453 workstart = (CHAR_T *) malloc ((width + 32) * sizeof (CHAR_T));
1454 if (workstart == NULL)
1455 {
1456 done = -1;
1457 goto all_done;
1458 }
1459 workend = workstart + (width + 32);
1460 }
1461 }
1462 }
1463 JUMP (*f, step1_jumps);
1464
1465 /* Given width in format string. */
1466 LABEL (width):
1467 width = read_int (&f);
1468
1469 if (width + 32 >= (int) (sizeof (work_buffer) / sizeof (work_buffer[0])))
1470 {
1471 /* We have to use a special buffer. The "32" is just a safe
1472 bet for all the output which is not counted in the width. */
1473 if (__libc_use_alloca ((width + 32) * sizeof (CHAR_T)))
1474 workend = ((CHAR_T *) alloca ((width + 32) * sizeof (CHAR_T))
1475 + (width + 32));
1476 else
1477 {
1478 workstart = (CHAR_T *) malloc ((width + 32) * sizeof (CHAR_T));
1479 if (workstart == NULL)
1480 {
1481 done = -1;
1482 goto all_done;
1483 }
1484 workend = workstart + (width + 32);
1485 }
1486 }
1487 if (*f == L_('$'))
1488 /* Oh, oh. The argument comes from a positional parameter. */
1489 goto do_positional;
1490 JUMP (*f, step1_jumps);
1491
1492 LABEL (precision):
1493 ++f;
1494 if (*f == L_('*'))
1495 {
1496 const UCHAR_T *tmp; /* Temporary value. */
1497
1498 tmp = ++f;
1499 if (ISDIGIT (*tmp) && read_int (&tmp) > 0 && *tmp == L_('$'))
1500 /* The precision comes from a positional parameter. */
1501 goto do_positional;
1502
1503 prec = va_arg (ap, int);
1504
1505 /* If the precision is negative the precision is omitted. */
1506 if (prec < 0)
1507 prec = -1;
1508 }
1509 else if (ISDIGIT (*f))
1510 prec = read_int (&f);
1511 else
1512 prec = 0;
1513 if (prec > width
1514 && prec + 32 > (int)(sizeof (work_buffer) / sizeof (work_buffer[0])))
1515 {
1516 if (__builtin_expect (prec > ~((size_t) 0) - 31, 0))
1517 {
1518 done = -1;
1519 goto all_done;
1520 }
1521 size_t needed = ((size_t) prec + 32) * sizeof (CHAR_T);
1522
1523 if (__libc_use_alloca (needed))
1524 workend = (((CHAR_T *) alloca (needed)) + ((size_t) prec + 32));
1525 else
1526 {
1527 workstart = (CHAR_T *) malloc (needed);
1528 if (workstart == NULL)
1529 {
1530 done = -1;
1531 goto all_done;
1532 }
1533 workend = workstart + ((size_t) prec + 32);
1534 }
1535 }
1536 JUMP (*f, step2_jumps);
1537
1538 /* Process 'h' modifier. There might another 'h' following. */
1539 LABEL (mod_half):
1540 is_short = 1;
1541 JUMP (*++f, step3a_jumps);
1542
1543 /* Process 'hh' modifier. */
1544 LABEL (mod_halfhalf):
1545 is_short = 0;
1546 is_char = 1;
1547 JUMP (*++f, step4_jumps);
1548
1549 /* Process 'l' modifier. There might another 'l' following. */
1550 LABEL (mod_long):
1551 is_long = 1;
1552 JUMP (*++f, step3b_jumps);
1553
1554 /* Process 'L', 'q', or 'll' modifier. No other modifier is
1555 allowed to follow. */
1556 LABEL (mod_longlong):
1557 is_long_double = 1;
1558 is_long = 1;
1559 JUMP (*++f, step4_jumps);
1560
1561 LABEL (mod_size_t):
1562 is_long_double = sizeof (size_t) > sizeof (unsigned long int);
1563 is_long = sizeof (size_t) > sizeof (unsigned int);
1564 JUMP (*++f, step4_jumps);
1565
1566 LABEL (mod_ptrdiff_t):
1567 is_long_double = sizeof (ptrdiff_t) > sizeof (unsigned long int);
1568 is_long = sizeof (ptrdiff_t) > sizeof (unsigned int);
1569 JUMP (*++f, step4_jumps);
1570
1571 LABEL (mod_intmax_t):
1572 is_long_double = sizeof (intmax_t) > sizeof (unsigned long int);
1573 is_long = sizeof (intmax_t) > sizeof (unsigned int);
1574 JUMP (*++f, step4_jumps);
1575
1576 /* Process current format. */
1577 while (1)
1578 {
1579 process_arg (((struct printf_spec *) NULL));
1580 process_string_arg (((struct printf_spec *) NULL));
1581
1582 LABEL (form_unknown):
1583 if (spec == L_('\0'))
1584 {
1585 /* The format string ended before the specifier is complete. */
1586 done = -1;
1587 goto all_done;
1588 }
1589
1590 /* If we are in the fast loop force entering the complicated
1591 one. */
1592 goto do_positional;
1593 }
1594
1595 /* The format is correctly handled. */
1596 ++nspecs_done;
1597
1598 if (__builtin_expect (workstart != NULL, 0))
1599 free (workstart);
1600 workstart = NULL;
1601
1602 /* Look for next format specifier. */
1603 #ifdef COMPILE_WPRINTF
1604 f = __find_specwc ((end_of_spec = ++f));
1605 #else
1606 f = __find_specmb ((end_of_spec = ++f));
1607 #endif
1608
1609 /* Write the following constant string. */
1610 outstring (end_of_spec, f - end_of_spec);
1611 }
1612 while (*f != L_('\0'));
1613
1614 /* Unlock stream and return. */
1615 goto all_done;
1616
1617 /* Here starts the more complex loop to handle positional parameters. */
1618 do_positional:
1619 {
1620 /* Array with information about the needed arguments. This has to
1621 be dynamically extensible. */
1622 size_t nspecs = 0;
1623 size_t nspecs_max = 32; /* A more or less arbitrary start value. */
1624 struct printf_spec *specs
1625 = alloca (nspecs_max * sizeof (struct printf_spec));
1626
1627 /* The number of arguments the format string requests. This will
1628 determine the size of the array needed to store the argument
1629 attributes. */
1630 size_t nargs = 0;
1631 int *args_type;
1632 union printf_arg *args_value = NULL;
1633
1634 /* Positional parameters refer to arguments directly. This could
1635 also determine the maximum number of arguments. Track the
1636 maximum number. */
1637 size_t max_ref_arg = 0;
1638
1639 /* Just a counter. */
1640 size_t cnt;
1641
1642 free (workstart);
1643 workstart = NULL;
1644
1645 if (grouping == (const char *) -1)
1646 {
1647 #ifdef COMPILE_WPRINTF
1648 thousands_sep = _NL_CURRENT_WORD (LC_NUMERIC,
1649 _NL_NUMERIC_THOUSANDS_SEP_WC);
1650 #else
1651 thousands_sep = _NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP);
1652 #endif
1653
1654 grouping = _NL_CURRENT (LC_NUMERIC, GROUPING);
1655 if (*grouping == '\0' || *grouping == CHAR_MAX)
1656 grouping = NULL;
1657 }
1658
1659 for (f = lead_str_end; *f != L_('\0'); f = specs[nspecs++].next_fmt)
1660 {
1661 if (nspecs >= nspecs_max)
1662 {
1663 /* Extend the array of format specifiers. */
1664 struct printf_spec *old = specs;
1665
1666 nspecs_max *= 2;
1667 specs = alloca (nspecs_max * sizeof (struct printf_spec));
1668
1669 if (specs == &old[nspecs])
1670 /* Stack grows up, OLD was the last thing allocated;
1671 extend it. */
1672 nspecs_max += nspecs_max / 2;
1673 else
1674 {
1675 /* Copy the old array's elements to the new space. */
1676 memcpy (specs, old, nspecs * sizeof (struct printf_spec));
1677 if (old == &specs[nspecs])
1678 /* Stack grows down, OLD was just below the new
1679 SPECS. We can use that space when the new space
1680 runs out. */
1681 nspecs_max += nspecs_max / 2;
1682 }
1683 }
1684
1685 /* Parse the format specifier. */
1686 #ifdef COMPILE_WPRINTF
1687 nargs += __parse_one_specwc (f, nargs, &specs[nspecs], &max_ref_arg);
1688 #else
1689 nargs += __parse_one_specmb (f, nargs, &specs[nspecs], &max_ref_arg);
1690 #endif
1691 }
1692
1693 /* Determine the number of arguments the format string consumes. */
1694 nargs = MAX (nargs, max_ref_arg);
1695
1696 /* Allocate memory for the argument descriptions. */
1697 args_type = alloca (nargs * sizeof (int));
1698 memset (args_type, s->_flags2 & _IO_FLAGS2_FORTIFY ? '\xff' : '\0',
1699 nargs * sizeof (int));
1700 args_value = alloca (nargs * sizeof (union printf_arg));
1701
1702 /* XXX Could do sanity check here: If any element in ARGS_TYPE is
1703 still zero after this loop, format is invalid. For now we
1704 simply use 0 as the value. */
1705
1706 /* Fill in the types of all the arguments. */
1707 for (cnt = 0; cnt < nspecs; ++cnt)
1708 {
1709 /* If the width is determined by an argument this is an int. */
1710 if (specs[cnt].width_arg != -1)
1711 args_type[specs[cnt].width_arg] = PA_INT;
1712
1713 /* If the precision is determined by an argument this is an int. */
1714 if (specs[cnt].prec_arg != -1)
1715 args_type[specs[cnt].prec_arg] = PA_INT;
1716
1717 switch (specs[cnt].ndata_args)
1718 {
1719 case 0: /* No arguments. */
1720 break;
1721 case 1: /* One argument; we already have the type. */
1722 args_type[specs[cnt].data_arg] = specs[cnt].data_arg_type;
1723 break;
1724 default:
1725 /* We have more than one argument for this format spec.
1726 We must call the arginfo function again to determine
1727 all the types. */
1728 (void) (*__printf_arginfo_table[specs[cnt].info.spec])
1729 (&specs[cnt].info,
1730 specs[cnt].ndata_args, &args_type[specs[cnt].data_arg]);
1731 break;
1732 }
1733 }
1734
1735 /* Now we know all the types and the order. Fill in the argument
1736 values. */
1737 for (cnt = 0; cnt < nargs; ++cnt)
1738 switch (args_type[cnt])
1739 {
1740 #define T(tag, mem, type) \
1741 case tag: \
1742 args_value[cnt].mem = va_arg (ap_save, type); \
1743 break
1744
1745 T (PA_CHAR, pa_int, int); /* Promoted. */
1746 T (PA_WCHAR, pa_wchar, wint_t);
1747 T (PA_INT|PA_FLAG_SHORT, pa_int, int); /* Promoted. */
1748 T (PA_INT, pa_int, int);
1749 T (PA_INT|PA_FLAG_LONG, pa_long_int, long int);
1750 T (PA_INT|PA_FLAG_LONG_LONG, pa_long_long_int, long long int);
1751 T (PA_FLOAT, pa_double, double); /* Promoted. */
1752 T (PA_DOUBLE, pa_double, double);
1753 case PA_DOUBLE|PA_FLAG_LONG_DOUBLE:
1754 if (__ldbl_is_dbl)
1755 {
1756 args_value[cnt].pa_double = va_arg (ap_save, double);
1757 args_type[cnt] &= ~PA_FLAG_LONG_DOUBLE;
1758 }
1759 else
1760 args_value[cnt].pa_long_double = va_arg (ap_save, long double);
1761 break;
1762 T (PA_STRING, pa_string, const char *);
1763 T (PA_WSTRING, pa_wstring, const wchar_t *);
1764 T (PA_POINTER, pa_pointer, void *);
1765 #undef T
1766 default:
1767 if ((args_type[cnt] & PA_FLAG_PTR) != 0)
1768 args_value[cnt].pa_pointer = va_arg (ap_save, void *);
1769 else
1770 args_value[cnt].pa_long_double = 0.0;
1771 break;
1772 case -1:
1773 /* Error case. Not all parameters appear in N$ format
1774 strings. We have no way to determine their type. */
1775 assert (s->_flags2 & _IO_FLAGS2_FORTIFY);
1776 __libc_fatal ("*** invalid %N$ use detected ***\n");
1777 }
1778
1779 /* Now walk through all format specifiers and process them. */
1780 for (; (size_t) nspecs_done < nspecs; ++nspecs_done)
1781 {
1782 #undef REF
1783 #ifdef SHARED
1784 # define REF(Name) &&do2_##Name - &&do_form_unknown
1785 #else
1786 # define REF(Name) &&do2_##Name
1787 #endif
1788 #undef LABEL
1789 #define LABEL(Name) do2_##Name
1790 STEP4_TABLE;
1791
1792 int is_negative;
1793 union
1794 {
1795 unsigned long long int longlong;
1796 unsigned long int word;
1797 } number;
1798 int base;
1799 union printf_arg the_arg;
1800 CHAR_T *string; /* Pointer to argument string. */
1801
1802 /* Fill variables from values in struct. */
1803 int alt = specs[nspecs_done].info.alt;
1804 int space = specs[nspecs_done].info.space;
1805 int left = specs[nspecs_done].info.left;
1806 int showsign = specs[nspecs_done].info.showsign;
1807 int group = specs[nspecs_done].info.group;
1808 int is_long_double = specs[nspecs_done].info.is_long_double;
1809 int is_short = specs[nspecs_done].info.is_short;
1810 int is_char = specs[nspecs_done].info.is_char;
1811 int is_long = specs[nspecs_done].info.is_long;
1812 int width = specs[nspecs_done].info.width;
1813 int prec = specs[nspecs_done].info.prec;
1814 int use_outdigits = specs[nspecs_done].info.i18n;
1815 char pad = specs[nspecs_done].info.pad;
1816 CHAR_T spec = specs[nspecs_done].info.spec;
1817
1818 workstart = NULL;
1819 workend = &work_buffer[sizeof (work_buffer) / sizeof (CHAR_T)];
1820
1821 /* Fill in last information. */
1822 if (specs[nspecs_done].width_arg != -1)
1823 {
1824 /* Extract the field width from an argument. */
1825 specs[nspecs_done].info.width =
1826 args_value[specs[nspecs_done].width_arg].pa_int;
1827
1828 if (specs[nspecs_done].info.width < 0)
1829 /* If the width value is negative left justification is
1830 selected and the value is taken as being positive. */
1831 {
1832 specs[nspecs_done].info.width *= -1;
1833 left = specs[nspecs_done].info.left = 1;
1834 }
1835 width = specs[nspecs_done].info.width;
1836 }
1837
1838 if (specs[nspecs_done].prec_arg != -1)
1839 {
1840 /* Extract the precision from an argument. */
1841 specs[nspecs_done].info.prec =
1842 args_value[specs[nspecs_done].prec_arg].pa_int;
1843
1844 if (specs[nspecs_done].info.prec < 0)
1845 /* If the precision is negative the precision is
1846 omitted. */
1847 specs[nspecs_done].info.prec = -1;
1848
1849 prec = specs[nspecs_done].info.prec;
1850 }
1851
1852 /* Maybe the buffer is too small. */
1853 if (MAX (prec, width) + 32 > (int) (sizeof (work_buffer)
1854 / sizeof (CHAR_T)))
1855 {
1856 if (__libc_use_alloca ((MAX (prec, width) + 32)
1857 * sizeof (CHAR_T)))
1858 workend = ((CHAR_T *) alloca ((MAX (prec, width) + 32)
1859 * sizeof (CHAR_T))
1860 + (MAX (prec, width) + 32));
1861 else
1862 {
1863 workstart = (CHAR_T *) malloc ((MAX (prec, width) + 32)
1864 * sizeof (CHAR_T));
1865 workend = workstart + (MAX (prec, width) + 32);
1866 }
1867 }
1868
1869 /* Process format specifiers. */
1870 while (1)
1871 {
1872 JUMP (spec, step4_jumps);
1873
1874 process_arg ((&specs[nspecs_done]));
1875 process_string_arg ((&specs[nspecs_done]));
1876
1877 LABEL (form_unknown):
1878 {
1879 extern printf_function **__printf_function_table;
1880 int function_done;
1881 printf_function *function;
1882 unsigned int i;
1883 const void **ptr;
1884
1885 function =
1886 (__printf_function_table == NULL ? NULL :
1887 __printf_function_table[specs[nspecs_done].info.spec]);
1888
1889 if (function == NULL)
1890 function = &printf_unknown;
1891
1892 ptr = alloca (specs[nspecs_done].ndata_args
1893 * sizeof (const void *));
1894
1895 /* Fill in an array of pointers to the argument values. */
1896 for (i = 0; i < specs[nspecs_done].ndata_args; ++i)
1897 ptr[i] = &args_value[specs[nspecs_done].data_arg + i];
1898
1899 /* Call the function. */
1900 function_done = (*function) (s, &specs[nspecs_done].info, ptr);
1901
1902 /* If an error occurred we don't have information about #
1903 of chars. */
1904 if (function_done < 0)
1905 {
1906 done = -1;
1907 goto all_done;
1908 }
1909
1910 done_add (function_done);
1911 }
1912 break;
1913 }
1914
1915 free (workstart);
1916 workstart = NULL;
1917
1918 /* Write the following constant string. */
1919 outstring (specs[nspecs_done].end_of_fmt,
1920 specs[nspecs_done].next_fmt
1921 - specs[nspecs_done].end_of_fmt);
1922 }
1923 }
1924
1925 all_done:
1926 if (__builtin_expect (workstart != NULL, 0))
1927 free (workstart);
1928 /* Unlock the stream. */
1929 _IO_funlockfile (s);
1930 _IO_cleanup_region_end (0);
1931
1932 return done;
1933 }
1934 \f
1935 /* Handle an unknown format specifier. This prints out a canonicalized
1936 representation of the format spec itself. */
1937 static int
1938 printf_unknown (FILE *s, const struct printf_info *info,
1939 const void *const *args)
1940
1941 {
1942 int done = 0;
1943 CHAR_T work_buffer[MAX (sizeof (info->width), sizeof (info->prec)) * 3];
1944 CHAR_T *const workend
1945 = &work_buffer[sizeof (work_buffer) / sizeof (CHAR_T)];
1946 register CHAR_T *w;
1947
1948 outchar (L_('%'));
1949
1950 if (info->alt)
1951 outchar (L_('#'));
1952 if (info->group)
1953 outchar (L_('\''));
1954 if (info->showsign)
1955 outchar (L_('+'));
1956 else if (info->space)
1957 outchar (L_(' '));
1958 if (info->left)
1959 outchar (L_('-'));
1960 if (info->pad == L_('0'))
1961 outchar (L_('0'));
1962 if (info->i18n)
1963 outchar (L_('I'));
1964
1965 if (info->width != 0)
1966 {
1967 w = _itoa_word (info->width, workend, 10, 0);
1968 while (w < workend)
1969 outchar (*w++);
1970 }
1971
1972 if (info->prec != -1)
1973 {
1974 outchar (L_('.'));
1975 w = _itoa_word (info->prec, workend, 10, 0);
1976 while (w < workend)
1977 outchar (*w++);
1978 }
1979
1980 if (info->spec != L_('\0'))
1981 outchar (info->spec);
1982
1983 all_done:
1984 return done;
1985 }
1986 \f
1987 /* Group the digits according to the grouping rules of the current locale.
1988 The interpretation of GROUPING is as in `struct lconv' from <locale.h>. */
1989 static CHAR_T *
1990 internal_function
1991 group_number (CHAR_T *w, CHAR_T *rear_ptr, const char *grouping,
1992 #ifdef COMPILE_WPRINTF
1993 wchar_t thousands_sep
1994 #else
1995 const char *thousands_sep
1996 #endif
1997 )
1998 {
1999 int len;
2000 CHAR_T *src, *s;
2001 #ifndef COMPILE_WPRINTF
2002 int tlen = strlen (thousands_sep);
2003 #endif
2004
2005 /* We treat all negative values like CHAR_MAX. */
2006
2007 if (*grouping == CHAR_MAX || *grouping <= 0)
2008 /* No grouping should be done. */
2009 return w;
2010
2011 len = *grouping++;
2012
2013 /* Copy existing string so that nothing gets overwritten. */
2014 src = (CHAR_T *) alloca ((rear_ptr - w) * sizeof (CHAR_T));
2015 s = (CHAR_T *) __mempcpy (src, w,
2016 (rear_ptr - w) * sizeof (CHAR_T));
2017 w = rear_ptr;
2018
2019 /* Process all characters in the string. */
2020 while (s > src)
2021 {
2022 *--w = *--s;
2023
2024 if (--len == 0 && s > src)
2025 {
2026 /* A new group begins. */
2027 #ifdef COMPILE_WPRINTF
2028 *--w = thousands_sep;
2029 #else
2030 int cnt = tlen;
2031 do
2032 *--w = thousands_sep[--cnt];
2033 while (cnt > 0);
2034 #endif
2035
2036 if (*grouping == CHAR_MAX
2037 #if CHAR_MIN < 0
2038 || *grouping < 0
2039 #endif
2040 )
2041 {
2042 /* No further grouping to be done.
2043 Copy the rest of the number. */
2044 do
2045 *--w = *--s;
2046 while (s > src);
2047 break;
2048 }
2049 else if (*grouping != '\0')
2050 /* The previous grouping repeats ad infinitum. */
2051 len = *grouping++;
2052 else
2053 len = grouping[-1];
2054 }
2055 }
2056 return w;
2057 }
2058 \f
2059 /* Helper "class" for `fprintf to unbuffered': creates a temporary buffer. */
2060 struct helper_file
2061 {
2062 struct _IO_FILE_plus _f;
2063 #ifdef COMPILE_WPRINTF
2064 struct _IO_wide_data _wide_data;
2065 #endif
2066 _IO_FILE *_put_stream;
2067 #ifdef _IO_MTSAFE_IO
2068 _IO_lock_t lock;
2069 #endif
2070 };
2071
2072 static int
2073 _IO_helper_overflow (_IO_FILE *s, int c)
2074 {
2075 _IO_FILE *target = ((struct helper_file*) s)->_put_stream;
2076 #ifdef COMPILE_WPRINTF
2077 int used = s->_wide_data->_IO_write_ptr - s->_wide_data->_IO_write_base;
2078 if (used)
2079 {
2080 _IO_size_t written = _IO_sputn (target, s->_wide_data->_IO_write_base,
2081 used);
2082 s->_wide_data->_IO_write_ptr -= written;
2083 }
2084 #else
2085 int used = s->_IO_write_ptr - s->_IO_write_base;
2086 if (used)
2087 {
2088 _IO_size_t written = _IO_sputn (target, s->_IO_write_base, used);
2089 s->_IO_write_ptr -= written;
2090 }
2091 #endif
2092 return PUTC (c, s);
2093 }
2094
2095 #ifdef COMPILE_WPRINTF
2096 static const struct _IO_jump_t _IO_helper_jumps =
2097 {
2098 JUMP_INIT_DUMMY,
2099 JUMP_INIT (finish, INTUSE(_IO_wdefault_finish)),
2100 JUMP_INIT (overflow, _IO_helper_overflow),
2101 JUMP_INIT (underflow, _IO_default_underflow),
2102 JUMP_INIT (uflow, INTUSE(_IO_default_uflow)),
2103 JUMP_INIT (pbackfail, (_IO_pbackfail_t) INTUSE(_IO_wdefault_pbackfail)),
2104 JUMP_INIT (xsputn, INTUSE(_IO_wdefault_xsputn)),
2105 JUMP_INIT (xsgetn, INTUSE(_IO_wdefault_xsgetn)),
2106 JUMP_INIT (seekoff, _IO_default_seekoff),
2107 JUMP_INIT (seekpos, _IO_default_seekpos),
2108 JUMP_INIT (setbuf, _IO_default_setbuf),
2109 JUMP_INIT (sync, _IO_default_sync),
2110 JUMP_INIT (doallocate, INTUSE(_IO_wdefault_doallocate)),
2111 JUMP_INIT (read, _IO_default_read),
2112 JUMP_INIT (write, _IO_default_write),
2113 JUMP_INIT (seek, _IO_default_seek),
2114 JUMP_INIT (close, _IO_default_close),
2115 JUMP_INIT (stat, _IO_default_stat)
2116 };
2117 #else
2118 static const struct _IO_jump_t _IO_helper_jumps =
2119 {
2120 JUMP_INIT_DUMMY,
2121 JUMP_INIT (finish, INTUSE(_IO_default_finish)),
2122 JUMP_INIT (overflow, _IO_helper_overflow),
2123 JUMP_INIT (underflow, _IO_default_underflow),
2124 JUMP_INIT (uflow, INTUSE(_IO_default_uflow)),
2125 JUMP_INIT (pbackfail, INTUSE(_IO_default_pbackfail)),
2126 JUMP_INIT (xsputn, INTUSE(_IO_default_xsputn)),
2127 JUMP_INIT (xsgetn, INTUSE(_IO_default_xsgetn)),
2128 JUMP_INIT (seekoff, _IO_default_seekoff),
2129 JUMP_INIT (seekpos, _IO_default_seekpos),
2130 JUMP_INIT (setbuf, _IO_default_setbuf),
2131 JUMP_INIT (sync, _IO_default_sync),
2132 JUMP_INIT (doallocate, INTUSE(_IO_default_doallocate)),
2133 JUMP_INIT (read, _IO_default_read),
2134 JUMP_INIT (write, _IO_default_write),
2135 JUMP_INIT (seek, _IO_default_seek),
2136 JUMP_INIT (close, _IO_default_close),
2137 JUMP_INIT (stat, _IO_default_stat)
2138 };
2139 #endif
2140
2141 static int
2142 internal_function
2143 buffered_vfprintf (register _IO_FILE *s, const CHAR_T *format,
2144 _IO_va_list args)
2145 {
2146 CHAR_T buf[_IO_BUFSIZ];
2147 struct helper_file helper;
2148 register _IO_FILE *hp = (_IO_FILE *) &helper._f;
2149 int result, to_flush;
2150
2151 /* Orient the stream. */
2152 #ifdef ORIENT
2153 ORIENT;
2154 #endif
2155
2156 /* Initialize helper. */
2157 helper._put_stream = s;
2158 #ifdef COMPILE_WPRINTF
2159 hp->_wide_data = &helper._wide_data;
2160 _IO_wsetp (hp, buf, buf + sizeof buf / sizeof (CHAR_T));
2161 hp->_mode = 1;
2162 #else
2163 _IO_setp (hp, buf, buf + sizeof buf);
2164 hp->_mode = -1;
2165 #endif
2166 hp->_IO_file_flags = _IO_MAGIC|_IO_NO_READS|_IO_USER_LOCK;
2167 #if _IO_JUMPS_OFFSET
2168 hp->_vtable_offset = 0;
2169 #endif
2170 #ifdef _IO_MTSAFE_IO
2171 hp->_lock = NULL;
2172 #endif
2173 hp->_flags2 = s->_flags2;
2174 _IO_JUMPS (&helper._f) = (struct _IO_jump_t *) &_IO_helper_jumps;
2175
2176 /* Now print to helper instead. */
2177 #ifndef COMPILE_WPRINTF
2178 result = INTUSE(_IO_vfprintf) (hp, format, args);
2179 #else
2180 result = vfprintf (hp, format, args);
2181 #endif
2182
2183 /* Lock stream. */
2184 __libc_cleanup_region_start (1, (void (*) (void *)) &_IO_funlockfile, s);
2185 _IO_flockfile (s);
2186
2187 /* Now flush anything from the helper to the S. */
2188 #ifdef COMPILE_WPRINTF
2189 if ((to_flush = (hp->_wide_data->_IO_write_ptr
2190 - hp->_wide_data->_IO_write_base)) > 0)
2191 {
2192 if ((int) _IO_sputn (s, hp->_wide_data->_IO_write_base, to_flush)
2193 != to_flush)
2194 result = -1;
2195 }
2196 #else
2197 if ((to_flush = hp->_IO_write_ptr - hp->_IO_write_base) > 0)
2198 {
2199 if ((int) _IO_sputn (s, hp->_IO_write_base, to_flush) != to_flush)
2200 result = -1;
2201 }
2202 #endif
2203
2204 /* Unlock the stream. */
2205 _IO_funlockfile (s);
2206 __libc_cleanup_region_end (0);
2207
2208 return result;
2209 }
2210
2211 #undef vfprintf
2212 #ifdef COMPILE_WPRINTF
2213 strong_alias (_IO_vfwprintf, __vfwprintf);
2214 ldbl_weak_alias (_IO_vfwprintf, vfwprintf);
2215 #else
2216 ldbl_strong_alias (_IO_vfprintf_internal, vfprintf);
2217 ldbl_hidden_def (_IO_vfprintf_internal, vfprintf)
2218 ldbl_strong_alias (_IO_vfprintf_internal, _IO_vfprintf);
2219 #endif
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