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[glibc.git] / stdio-common / vfprintf.c
blob115beabdfbba0839a3fa0b23b2780f59a9cda9d8
1 /* Copyright (C) 1991-2014 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 Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
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 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <http://www.gnu.org/licenses/>. */
17
18 #include <ctype.h>
19 #include <limits.h>
20 #include <printf.h>
21 #include <stdarg.h>
22 #include <stdint.h>
23 #include <stdlib.h>
24 #include <string.h>
25 #include <errno.h>
26 #include <wchar.h>
27 #include <bits/libc-lock.h>
28 #include <sys/param.h>
29 #include <_itoa.h>
30 #include <locale/localeinfo.h>
31 #include <stdio.h>
32
33 /* This code is shared between the standard stdio implementation found
34 in GNU C library and the libio implementation originally found in
35 GNU libg++.
36
37 Beside this it is also shared between the normal and wide character
38 implementation as defined in ISO/IEC 9899:1990/Amendment 1:1995. */
39
40
41 #include <libioP.h>
42 #define FILE _IO_FILE
43 #undef va_list
44 #define va_list _IO_va_list
45 #undef BUFSIZ
46 #define BUFSIZ _IO_BUFSIZ
47 #define ARGCHECK(S, Format) \
48 do \
49 { \
50 /* Check file argument for consistence. */ \
51 CHECK_FILE (S, -1); \
52 if (S->_flags & _IO_NO_WRITES) \
53 { \
54 S->_flags |= _IO_ERR_SEEN; \
55 __set_errno (EBADF); \
56 return -1; \
57 } \
58 if (Format == NULL) \
59 { \
60 MAYBE_SET_EINVAL; \
61 return -1; \
62 } \
63 } while (0)
64 #define UNBUFFERED_P(S) ((S)->_IO_file_flags & _IO_UNBUFFERED)
65
66 #define done_add(val) \
67 do { \
68 unsigned int _val = val; \
69 assert ((unsigned int) done < (unsigned int) INT_MAX); \
70 if (__glibc_unlikely (INT_MAX - done < _val)) \
71 { \
72 done = -1; \
73 __set_errno (EOVERFLOW); \
74 goto all_done; \
75 } \
76 done += _val; \
77 } while (0)
78
79 #ifndef COMPILE_WPRINTF
80 # define vfprintf _IO_vfprintf_internal
81 # define CHAR_T char
82 # define UCHAR_T unsigned char
83 # define INT_T int
84 # define L_(Str) Str
85 # define ISDIGIT(Ch) ((unsigned int) ((Ch) - '0') < 10)
86 # define STR_LEN(Str) strlen (Str)
87
88 # define PUT(F, S, N) _IO_sputn ((F), (S), (N))
89 # define PAD(Padchar) \
90 do { \
91 if (width > 0) \
92 { \
93 _IO_ssize_t written = _IO_padn (s, (Padchar), width); \
94 if (__glibc_unlikely (written != width)) \
95 { \
96 done = -1; \
97 goto all_done; \
98 } \
99 done_add (written); \
100 } \
101 } while (0)
102 # define PUTC(C, F) _IO_putc_unlocked (C, F)
103 # define ORIENT if (_IO_vtable_offset (s) == 0 && _IO_fwide (s, -1) != -1)\
104 return -1
105 #else
106 # define vfprintf _IO_vfwprintf
107 # define CHAR_T wchar_t
108 /* This is a hack!!! There should be a type uwchar_t. */
109 # define UCHAR_T unsigned int /* uwchar_t */
110 # define INT_T wint_t
111 # define L_(Str) L##Str
112 # define ISDIGIT(Ch) ((unsigned int) ((Ch) - L'0') < 10)
113 # define STR_LEN(Str) __wcslen (Str)
114
115 # include <_itowa.h>
116
117 # define PUT(F, S, N) _IO_sputn ((F), (S), (N))
118 # define PAD(Padchar) \
119 do { \
120 if (width > 0) \
121 { \
122 _IO_ssize_t written = _IO_wpadn (s, (Padchar), width); \
123 if (__glibc_unlikely (written != width)) \
124 { \
125 done = -1; \
126 goto all_done; \
127 } \
128 done_add (written); \
129 } \
130 } while (0)
131 # define PUTC(C, F) _IO_putwc_unlocked (C, F)
132 # define ORIENT if (_IO_fwide (s, 1) != 1) return -1
133
134 # undef _itoa
135 # define _itoa(Val, Buf, Base, Case) _itowa (Val, Buf, Base, Case)
136 # define _itoa_word(Val, Buf, Base, Case) _itowa_word (Val, Buf, Base, Case)
137 # undef EOF
138 # define EOF WEOF
139 #endif
140
141 #include "_i18n_number.h"
142
143 /* Include the shared code for parsing the format string. */
144 #include "printf-parse.h"
145
146
147 #define outchar(Ch) \
148 do \
149 { \
150 const INT_T outc = (Ch); \
151 if (PUTC (outc, s) == EOF || done == INT_MAX) \
152 { \
153 done = -1; \
154 goto all_done; \
155 } \
156 ++done; \
157 } \
158 while (0)
159
160 #define outstring(String, Len) \
161 do \
162 { \
163 assert ((size_t) done <= (size_t) INT_MAX); \
164 if ((size_t) PUT (s, (String), (Len)) != (size_t) (Len)) \
165 { \
166 done = -1; \
167 goto all_done; \
168 } \
169 if (__glibc_unlikely (INT_MAX - done < (Len))) \
170 { \
171 done = -1; \
172 __set_errno (EOVERFLOW); \
173 goto all_done; \
174 } \
175 done += (Len); \
176 } \
177 while (0)
178
179 /* For handling long_double and longlong we use the same flag. If
180 `long' and `long long' are effectively the same type define it to
181 zero. */
182 #if LONG_MAX == LONG_LONG_MAX
183 # define is_longlong 0
184 #else
185 # define is_longlong is_long_double
186 #endif
187
188 /* If `long' and `int' is effectively the same type we don't have to
189 handle `long separately. */
190 #if INT_MAX == LONG_MAX
191 # define is_long_num 0
192 #else
193 # define is_long_num is_long
194 #endif
195
196
197 /* Global variables. */
198 static const CHAR_T null[] = L_("(null)");
199
200
201 /* Helper function to provide temporary buffering for unbuffered streams. */
202 static int buffered_vfprintf (FILE *stream, const CHAR_T *fmt, va_list)
203 __THROW __attribute__ ((noinline)) internal_function;
204
205 /* Handle unknown format specifier. */
206 static int printf_unknown (FILE *, const struct printf_info *,
207 const void *const *) __THROW;
208
209 /* Group digits of number string. */
210 #ifdef COMPILE_WPRINTF
211 static CHAR_T *group_number (CHAR_T *, CHAR_T *, const char *, wchar_t)
212 __THROW internal_function;
213 #else
214 static CHAR_T *group_number (CHAR_T *, CHAR_T *, const char *, const char *)
215 __THROW internal_function;
216 #endif
217
218
219 /* The function itself. */
220 int
221 vfprintf (FILE *s, const CHAR_T *format, va_list ap)
222 {
223 /* The character used as thousands separator. */
224 #ifdef COMPILE_WPRINTF
225 wchar_t thousands_sep = L'\0';
226 #else
227 const char *thousands_sep = NULL;
228 #endif
229
230 /* The string describing the size of groups of digits. */
231 const char *grouping;
232
233 /* Place to accumulate the result. */
234 int done;
235
236 /* Current character in format string. */
237 const UCHAR_T *f;
238
239 /* End of leading constant string. */
240 const UCHAR_T *lead_str_end;
241
242 /* Points to next format specifier. */
243 const UCHAR_T *end_of_spec;
244
245 /* Buffer intermediate results. */
246 CHAR_T work_buffer[1000];
247 CHAR_T *workstart = NULL;
248 CHAR_T *workend;
249
250 /* We have to save the original argument pointer. */
251 va_list ap_save;
252
253 /* Count number of specifiers we already processed. */
254 int nspecs_done;
255
256 /* For the %m format we may need the current `errno' value. */
257 int save_errno = errno;
258
259 /* 1 if format is in read-only memory, -1 if it is in writable memory,
260 0 if unknown. */
261 int readonly_format = 0;
262
263 /* For the argument descriptions, which may be allocated on the heap. */
264 void *args_malloced = NULL;
265
266 /* This table maps a character into a number representing a
267 class. In each step there is a destination label for each
268 class. */
269 static const uint8_t jump_table[] =
270 {
271 /* ' ' */ 1, 0, 0, /* '#' */ 4,
272 0, /* '%' */ 14, 0, /* '\''*/ 6,
273 0, 0, /* '*' */ 7, /* '+' */ 2,
274 0, /* '-' */ 3, /* '.' */ 9, 0,
275 /* '0' */ 5, /* '1' */ 8, /* '2' */ 8, /* '3' */ 8,
276 /* '4' */ 8, /* '5' */ 8, /* '6' */ 8, /* '7' */ 8,
277 /* '8' */ 8, /* '9' */ 8, 0, 0,
278 0, 0, 0, 0,
279 0, /* 'A' */ 26, 0, /* 'C' */ 25,
280 0, /* 'E' */ 19, /* F */ 19, /* 'G' */ 19,
281 0, /* 'I' */ 29, 0, 0,
282 /* 'L' */ 12, 0, 0, 0,
283 0, 0, 0, /* 'S' */ 21,
284 0, 0, 0, 0,
285 /* 'X' */ 18, 0, /* 'Z' */ 13, 0,
286 0, 0, 0, 0,
287 0, /* 'a' */ 26, 0, /* 'c' */ 20,
288 /* 'd' */ 15, /* 'e' */ 19, /* 'f' */ 19, /* 'g' */ 19,
289 /* 'h' */ 10, /* 'i' */ 15, /* 'j' */ 28, 0,
290 /* 'l' */ 11, /* 'm' */ 24, /* 'n' */ 23, /* 'o' */ 17,
291 /* 'p' */ 22, /* 'q' */ 12, 0, /* 's' */ 21,
292 /* 't' */ 27, /* 'u' */ 16, 0, 0,
293 /* 'x' */ 18, 0, /* 'z' */ 13
294 };
295
296 #define NOT_IN_JUMP_RANGE(Ch) ((Ch) < L_(' ') || (Ch) > L_('z'))
297 #define CHAR_CLASS(Ch) (jump_table[(INT_T) (Ch) - L_(' ')])
298 #ifdef SHARED
299 /* 'int' is enough and it saves some space on 64 bit systems. */
300 # define JUMP_TABLE_TYPE const int
301 # define JUMP(ChExpr, table) \
302 do \
303 { \
304 int offset; \
305 void *ptr; \
306 spec = (ChExpr); \
307 offset = NOT_IN_JUMP_RANGE (spec) ? REF (form_unknown) \
308 : table[CHAR_CLASS (spec)]; \
309 ptr = &&do_form_unknown + offset; \
310 goto *ptr; \
311 } \
312 while (0)
313 #else
314 # define JUMP_TABLE_TYPE const void *const
315 # define JUMP(ChExpr, table) \
316 do \
317 { \
318 const void *ptr; \
319 spec = (ChExpr); \
320 ptr = NOT_IN_JUMP_RANGE (spec) ? REF (form_unknown) \
321 : table[CHAR_CLASS (spec)]; \
322 goto *ptr; \
323 } \
324 while (0)
325 #endif
326
327 #define STEP0_3_TABLE \
328 /* Step 0: at the beginning. */ \
329 static JUMP_TABLE_TYPE step0_jumps[30] = \
330 { \
331 REF (form_unknown), \
332 REF (flag_space), /* for ' ' */ \
333 REF (flag_plus), /* for '+' */ \
334 REF (flag_minus), /* for '-' */ \
335 REF (flag_hash), /* for '<hash>' */ \
336 REF (flag_zero), /* for '0' */ \
337 REF (flag_quote), /* for '\'' */ \
338 REF (width_asterics), /* for '*' */ \
339 REF (width), /* for '1'...'9' */ \
340 REF (precision), /* for '.' */ \
341 REF (mod_half), /* for 'h' */ \
342 REF (mod_long), /* for 'l' */ \
343 REF (mod_longlong), /* for 'L', 'q' */ \
344 REF (mod_size_t), /* for 'z', 'Z' */ \
345 REF (form_percent), /* for '%' */ \
346 REF (form_integer), /* for 'd', 'i' */ \
347 REF (form_unsigned), /* for 'u' */ \
348 REF (form_octal), /* for 'o' */ \
349 REF (form_hexa), /* for 'X', 'x' */ \
350 REF (form_float), /* for 'E', 'e', 'F', 'f', 'G', 'g' */ \
351 REF (form_character), /* for 'c' */ \
352 REF (form_string), /* for 's', 'S' */ \
353 REF (form_pointer), /* for 'p' */ \
354 REF (form_number), /* for 'n' */ \
355 REF (form_strerror), /* for 'm' */ \
356 REF (form_wcharacter), /* for 'C' */ \
357 REF (form_floathex), /* for 'A', 'a' */ \
358 REF (mod_ptrdiff_t), /* for 't' */ \
359 REF (mod_intmax_t), /* for 'j' */ \
360 REF (flag_i18n), /* for 'I' */ \
361 }; \
362 /* Step 1: after processing width. */ \
363 static JUMP_TABLE_TYPE step1_jumps[30] = \
364 { \
365 REF (form_unknown), \
366 REF (form_unknown), /* for ' ' */ \
367 REF (form_unknown), /* for '+' */ \
368 REF (form_unknown), /* for '-' */ \
369 REF (form_unknown), /* for '<hash>' */ \
370 REF (form_unknown), /* for '0' */ \
371 REF (form_unknown), /* for '\'' */ \
372 REF (form_unknown), /* for '*' */ \
373 REF (form_unknown), /* for '1'...'9' */ \
374 REF (precision), /* for '.' */ \
375 REF (mod_half), /* for 'h' */ \
376 REF (mod_long), /* for 'l' */ \
377 REF (mod_longlong), /* for 'L', 'q' */ \
378 REF (mod_size_t), /* for 'z', 'Z' */ \
379 REF (form_percent), /* for '%' */ \
380 REF (form_integer), /* for 'd', 'i' */ \
381 REF (form_unsigned), /* for 'u' */ \
382 REF (form_octal), /* for 'o' */ \
383 REF (form_hexa), /* for 'X', 'x' */ \
384 REF (form_float), /* for 'E', 'e', 'F', 'f', 'G', 'g' */ \
385 REF (form_character), /* for 'c' */ \
386 REF (form_string), /* for 's', 'S' */ \
387 REF (form_pointer), /* for 'p' */ \
388 REF (form_number), /* for 'n' */ \
389 REF (form_strerror), /* for 'm' */ \
390 REF (form_wcharacter), /* for 'C' */ \
391 REF (form_floathex), /* for 'A', 'a' */ \
392 REF (mod_ptrdiff_t), /* for 't' */ \
393 REF (mod_intmax_t), /* for 'j' */ \
394 REF (form_unknown) /* for 'I' */ \
395 }; \
396 /* Step 2: after processing precision. */ \
397 static JUMP_TABLE_TYPE step2_jumps[30] = \
398 { \
399 REF (form_unknown), \
400 REF (form_unknown), /* for ' ' */ \
401 REF (form_unknown), /* for '+' */ \
402 REF (form_unknown), /* for '-' */ \
403 REF (form_unknown), /* for '<hash>' */ \
404 REF (form_unknown), /* for '0' */ \
405 REF (form_unknown), /* for '\'' */ \
406 REF (form_unknown), /* for '*' */ \
407 REF (form_unknown), /* for '1'...'9' */ \
408 REF (form_unknown), /* for '.' */ \
409 REF (mod_half), /* for 'h' */ \
410 REF (mod_long), /* for 'l' */ \
411 REF (mod_longlong), /* for 'L', 'q' */ \
412 REF (mod_size_t), /* for 'z', 'Z' */ \
413 REF (form_percent), /* for '%' */ \
414 REF (form_integer), /* for 'd', 'i' */ \
415 REF (form_unsigned), /* for 'u' */ \
416 REF (form_octal), /* for 'o' */ \
417 REF (form_hexa), /* for 'X', 'x' */ \
418 REF (form_float), /* for 'E', 'e', 'F', 'f', 'G', 'g' */ \
419 REF (form_character), /* for 'c' */ \
420 REF (form_string), /* for 's', 'S' */ \
421 REF (form_pointer), /* for 'p' */ \
422 REF (form_number), /* for 'n' */ \
423 REF (form_strerror), /* for 'm' */ \
424 REF (form_wcharacter), /* for 'C' */ \
425 REF (form_floathex), /* for 'A', 'a' */ \
426 REF (mod_ptrdiff_t), /* for 't' */ \
427 REF (mod_intmax_t), /* for 'j' */ \
428 REF (form_unknown) /* for 'I' */ \
429 }; \
430 /* Step 3a: after processing first 'h' modifier. */ \
431 static JUMP_TABLE_TYPE step3a_jumps[30] = \
432 { \
433 REF (form_unknown), \
434 REF (form_unknown), /* for ' ' */ \
435 REF (form_unknown), /* for '+' */ \
436 REF (form_unknown), /* for '-' */ \
437 REF (form_unknown), /* for '<hash>' */ \
438 REF (form_unknown), /* for '0' */ \
439 REF (form_unknown), /* for '\'' */ \
440 REF (form_unknown), /* for '*' */ \
441 REF (form_unknown), /* for '1'...'9' */ \
442 REF (form_unknown), /* for '.' */ \
443 REF (mod_halfhalf), /* for 'h' */ \
444 REF (form_unknown), /* for 'l' */ \
445 REF (form_unknown), /* for 'L', 'q' */ \
446 REF (form_unknown), /* for 'z', 'Z' */ \
447 REF (form_percent), /* for '%' */ \
448 REF (form_integer), /* for 'd', 'i' */ \
449 REF (form_unsigned), /* for 'u' */ \
450 REF (form_octal), /* for 'o' */ \
451 REF (form_hexa), /* for 'X', 'x' */ \
452 REF (form_unknown), /* for 'E', 'e', 'F', 'f', 'G', 'g' */ \
453 REF (form_unknown), /* for 'c' */ \
454 REF (form_unknown), /* for 's', 'S' */ \
455 REF (form_unknown), /* for 'p' */ \
456 REF (form_number), /* for 'n' */ \
457 REF (form_unknown), /* for 'm' */ \
458 REF (form_unknown), /* for 'C' */ \
459 REF (form_unknown), /* for 'A', 'a' */ \
460 REF (form_unknown), /* for 't' */ \
461 REF (form_unknown), /* for 'j' */ \
462 REF (form_unknown) /* for 'I' */ \
463 }; \
464 /* Step 3b: after processing first 'l' modifier. */ \
465 static JUMP_TABLE_TYPE step3b_jumps[30] = \
466 { \
467 REF (form_unknown), \
468 REF (form_unknown), /* for ' ' */ \
469 REF (form_unknown), /* for '+' */ \
470 REF (form_unknown), /* for '-' */ \
471 REF (form_unknown), /* for '<hash>' */ \
472 REF (form_unknown), /* for '0' */ \
473 REF (form_unknown), /* for '\'' */ \
474 REF (form_unknown), /* for '*' */ \
475 REF (form_unknown), /* for '1'...'9' */ \
476 REF (form_unknown), /* for '.' */ \
477 REF (form_unknown), /* for 'h' */ \
478 REF (mod_longlong), /* for 'l' */ \
479 REF (form_unknown), /* for 'L', 'q' */ \
480 REF (form_unknown), /* for 'z', 'Z' */ \
481 REF (form_percent), /* for '%' */ \
482 REF (form_integer), /* for 'd', 'i' */ \
483 REF (form_unsigned), /* for 'u' */ \
484 REF (form_octal), /* for 'o' */ \
485 REF (form_hexa), /* for 'X', 'x' */ \
486 REF (form_float), /* for 'E', 'e', 'F', 'f', 'G', 'g' */ \
487 REF (form_character), /* for 'c' */ \
488 REF (form_string), /* for 's', 'S' */ \
489 REF (form_pointer), /* for 'p' */ \
490 REF (form_number), /* for 'n' */ \
491 REF (form_strerror), /* for 'm' */ \
492 REF (form_wcharacter), /* for 'C' */ \
493 REF (form_floathex), /* for 'A', 'a' */ \
494 REF (form_unknown), /* for 't' */ \
495 REF (form_unknown), /* for 'j' */ \
496 REF (form_unknown) /* for 'I' */ \
497 }
498
499 #define STEP4_TABLE \
500 /* Step 4: processing format specifier. */ \
501 static JUMP_TABLE_TYPE step4_jumps[30] = \
502 { \
503 REF (form_unknown), \
504 REF (form_unknown), /* for ' ' */ \
505 REF (form_unknown), /* for '+' */ \
506 REF (form_unknown), /* for '-' */ \
507 REF (form_unknown), /* for '<hash>' */ \
508 REF (form_unknown), /* for '0' */ \
509 REF (form_unknown), /* for '\'' */ \
510 REF (form_unknown), /* for '*' */ \
511 REF (form_unknown), /* for '1'...'9' */ \
512 REF (form_unknown), /* for '.' */ \
513 REF (form_unknown), /* for 'h' */ \
514 REF (form_unknown), /* for 'l' */ \
515 REF (form_unknown), /* for 'L', 'q' */ \
516 REF (form_unknown), /* for 'z', 'Z' */ \
517 REF (form_percent), /* for '%' */ \
518 REF (form_integer), /* for 'd', 'i' */ \
519 REF (form_unsigned), /* for 'u' */ \
520 REF (form_octal), /* for 'o' */ \
521 REF (form_hexa), /* for 'X', 'x' */ \
522 REF (form_float), /* for 'E', 'e', 'F', 'f', 'G', 'g' */ \
523 REF (form_character), /* for 'c' */ \
524 REF (form_string), /* for 's', 'S' */ \
525 REF (form_pointer), /* for 'p' */ \
526 REF (form_number), /* for 'n' */ \
527 REF (form_strerror), /* for 'm' */ \
528 REF (form_wcharacter), /* for 'C' */ \
529 REF (form_floathex), /* for 'A', 'a' */ \
530 REF (form_unknown), /* for 't' */ \
531 REF (form_unknown), /* for 'j' */ \
532 REF (form_unknown) /* for 'I' */ \
533 }
534
535
536 #define process_arg(fspec) \
537 /* Start real work. We know about all flags and modifiers and \
538 now process the wanted format specifier. */ \
539 LABEL (form_percent): \
540 /* Write a literal "%". */ \
541 outchar (L_('%')); \
542 break; \
543 \
544 LABEL (form_integer): \
545 /* Signed decimal integer. */ \
546 base = 10; \
547 \
548 if (is_longlong) \
549 { \
550 long long int signed_number; \
551 \
552 if (fspec == NULL) \
553 signed_number = va_arg (ap, long long int); \
554 else \
555 signed_number = args_value[fspec->data_arg].pa_long_long_int; \
556 \
557 is_negative = signed_number < 0; \
558 number.longlong = is_negative ? (- signed_number) : signed_number; \
559 \
560 goto LABEL (longlong_number); \
561 } \
562 else \
563 { \
564 long int signed_number; \
565 \
566 if (fspec == NULL) \
567 { \
568 if (is_long_num) \
569 signed_number = va_arg (ap, long int); \
570 else if (is_char) \
571 signed_number = (signed char) va_arg (ap, unsigned int); \
572 else if (!is_short) \
573 signed_number = va_arg (ap, int); \
574 else \
575 signed_number = (short int) va_arg (ap, unsigned int); \
576 } \
577 else \
578 if (is_long_num) \
579 signed_number = args_value[fspec->data_arg].pa_long_int; \
580 else if (is_char) \
581 signed_number = (signed char) \
582 args_value[fspec->data_arg].pa_u_int; \
583 else if (!is_short) \
584 signed_number = args_value[fspec->data_arg].pa_int; \
585 else \
586 signed_number = (short int) \
587 args_value[fspec->data_arg].pa_u_int; \
588 \
589 is_negative = signed_number < 0; \
590 number.word = is_negative ? (- signed_number) : signed_number; \
591 \
592 goto LABEL (number); \
593 } \
594 /* NOTREACHED */ \
595 \
596 LABEL (form_unsigned): \
597 /* Unsigned decimal integer. */ \
598 base = 10; \
599 goto LABEL (unsigned_number); \
600 /* NOTREACHED */ \
601 \
602 LABEL (form_octal): \
603 /* Unsigned octal integer. */ \
604 base = 8; \
605 goto LABEL (unsigned_number); \
606 /* NOTREACHED */ \
607 \
608 LABEL (form_hexa): \
609 /* Unsigned hexadecimal integer. */ \
610 base = 16; \
611 \
612 LABEL (unsigned_number): /* Unsigned number of base BASE. */ \
613 \
614 /* ISO specifies the `+' and ` ' flags only for signed \
615 conversions. */ \
616 is_negative = 0; \
617 showsign = 0; \
618 space = 0; \
619 \
620 if (is_longlong) \
621 { \
622 if (fspec == NULL) \
623 number.longlong = va_arg (ap, unsigned long long int); \
624 else \
625 number.longlong = args_value[fspec->data_arg].pa_u_long_long_int; \
626 \
627 LABEL (longlong_number): \
628 if (prec < 0) \
629 /* Supply a default precision if none was given. */ \
630 prec = 1; \
631 else \
632 /* We have to take care for the '0' flag. If a precision \
633 is given it must be ignored. */ \
634 pad = L_(' '); \
635 \
636 /* If the precision is 0 and the number is 0 nothing has to \
637 be written for the number, except for the 'o' format in \
638 alternate form. */ \
639 if (prec == 0 && number.longlong == 0) \
640 { \
641 string = workend; \
642 if (base == 8 && alt) \
643 *--string = L_('0'); \
644 } \
645 else \
646 { \
647 /* Put the number in WORK. */ \
648 string = _itoa (number.longlong, workend, base, \
649 spec == L_('X')); \
650 if (group && grouping) \
651 string = group_number (string, workend, grouping, \
652 thousands_sep); \
653 \
654 if (use_outdigits && base == 10) \
655 string = _i18n_number_rewrite (string, workend, workend); \
656 } \
657 /* Simplify further test for num != 0. */ \
658 number.word = number.longlong != 0; \
659 } \
660 else \
661 { \
662 if (fspec == NULL) \
663 { \
664 if (is_long_num) \
665 number.word = va_arg (ap, unsigned long int); \
666 else if (is_char) \
667 number.word = (unsigned char) va_arg (ap, unsigned int); \
668 else if (!is_short) \
669 number.word = va_arg (ap, unsigned int); \
670 else \
671 number.word = (unsigned short int) va_arg (ap, unsigned int); \
672 } \
673 else \
674 if (is_long_num) \
675 number.word = args_value[fspec->data_arg].pa_u_long_int; \
676 else if (is_char) \
677 number.word = (unsigned char) \
678 args_value[fspec->data_arg].pa_u_int; \
679 else if (!is_short) \
680 number.word = args_value[fspec->data_arg].pa_u_int; \
681 else \
682 number.word = (unsigned short int) \
683 args_value[fspec->data_arg].pa_u_int; \
684 \
685 LABEL (number): \
686 if (prec < 0) \
687 /* Supply a default precision if none was given. */ \
688 prec = 1; \
689 else \
690 /* We have to take care for the '0' flag. If a precision \
691 is given it must be ignored. */ \
692 pad = L_(' '); \
693 \
694 /* If the precision is 0 and the number is 0 nothing has to \
695 be written for the number, except for the 'o' format in \
696 alternate form. */ \
697 if (prec == 0 && number.word == 0) \
698 { \
699 string = workend; \
700 if (base == 8 && alt) \
701 *--string = L_('0'); \
702 } \
703 else \
704 { \
705 /* Put the number in WORK. */ \
706 string = _itoa_word (number.word, workend, base, \
707 spec == L_('X')); \
708 if (group && grouping) \
709 string = group_number (string, workend, grouping, \
710 thousands_sep); \
711 \
712 if (use_outdigits && base == 10) \
713 string = _i18n_number_rewrite (string, workend, workend); \
714 } \
715 } \
716 \
717 if (prec <= workend - string && number.word != 0 && alt && base == 8) \
718 /* Add octal marker. */ \
719 *--string = L_('0'); \
720 \
721 prec = MAX (0, prec - (workend - string)); \
722 \
723 if (!left) \
724 { \
725 width -= workend - string + prec; \
726 \
727 if (number.word != 0 && alt && base == 16) \
728 /* Account for 0X hex marker. */ \
729 width -= 2; \
730 \
731 if (is_negative || showsign || space) \
732 --width; \
733 \
734 if (pad == L_(' ')) \
735 { \
736 PAD (L_(' ')); \
737 width = 0; \
738 } \
739 \
740 if (is_negative) \
741 outchar (L_('-')); \
742 else if (showsign) \
743 outchar (L_('+')); \
744 else if (space) \
745 outchar (L_(' ')); \
746 \
747 if (number.word != 0 && alt && base == 16) \
748 { \
749 outchar (L_('0')); \
750 outchar (spec); \
751 } \
752 \
753 width += prec; \
754 PAD (L_('0')); \
755 \
756 outstring (string, workend - string); \
757 \
758 break; \
759 } \
760 else \
761 { \
762 if (is_negative) \
763 { \
764 outchar (L_('-')); \
765 --width; \
766 } \
767 else if (showsign) \
768 { \
769 outchar (L_('+')); \
770 --width; \
771 } \
772 else if (space) \
773 { \
774 outchar (L_(' ')); \
775 --width; \
776 } \
777 \
778 if (number.word != 0 && alt && base == 16) \
779 { \
780 outchar (L_('0')); \
781 outchar (spec); \
782 width -= 2; \
783 } \
784 \
785 width -= workend - string + prec; \
786 \
787 if (prec > 0) \
788 { \
789 int temp = width; \
790 width = prec; \
791 PAD (L_('0')); \
792 width = temp; \
793 } \
794 \
795 outstring (string, workend - string); \
796 \
797 PAD (L_(' ')); \
798 break; \
799 } \
800 \
801 LABEL (form_float): \
802 { \
803 /* Floating-point number. This is handled by printf_fp.c. */ \
804 const void *ptr; \
805 int function_done; \
806 \
807 if (fspec == NULL) \
808 { \
809 if (__ldbl_is_dbl) \
810 is_long_double = 0; \
811 \
812 struct printf_info info = { .prec = prec, \
813 .width = width, \
814 .spec = spec, \
815 .is_long_double = is_long_double, \
816 .is_short = is_short, \
817 .is_long = is_long, \
818 .alt = alt, \
819 .space = space, \
820 .left = left, \
821 .showsign = showsign, \
822 .group = group, \
823 .pad = pad, \
824 .extra = 0, \
825 .i18n = use_outdigits, \
826 .wide = sizeof (CHAR_T) != 1 }; \
827 \
828 if (is_long_double) \
829 the_arg.pa_long_double = va_arg (ap, long double); \
830 else \
831 the_arg.pa_double = va_arg (ap, double); \
832 ptr = (const void *) &the_arg; \
833 \
834 function_done = __printf_fp (s, &info, &ptr); \
835 } \
836 else \
837 { \
838 ptr = (const void *) &args_value[fspec->data_arg]; \
839 if (__ldbl_is_dbl) \
840 { \
841 fspec->data_arg_type = PA_DOUBLE; \
842 fspec->info.is_long_double = 0; \
843 } \
844 \
845 function_done = __printf_fp (s, &fspec->info, &ptr); \
846 } \
847 \
848 if (function_done < 0) \
849 { \
850 /* Error in print handler; up to handler to set errno. */ \
851 done = -1; \
852 goto all_done; \
853 } \
854 \
855 done_add (function_done); \
856 } \
857 break; \
858 \
859 LABEL (form_floathex): \
860 { \
861 /* Floating point number printed as hexadecimal number. */ \
862 const void *ptr; \
863 int function_done; \
864 \
865 if (fspec == NULL) \
866 { \
867 if (__ldbl_is_dbl) \
868 is_long_double = 0; \
869 \
870 struct printf_info info = { .prec = prec, \
871 .width = width, \
872 .spec = spec, \
873 .is_long_double = is_long_double, \
874 .is_short = is_short, \
875 .is_long = is_long, \
876 .alt = alt, \
877 .space = space, \
878 .left = left, \
879 .showsign = showsign, \
880 .group = group, \
881 .pad = pad, \
882 .extra = 0, \
883 .wide = sizeof (CHAR_T) != 1 }; \
884 \
885 if (is_long_double) \
886 the_arg.pa_long_double = va_arg (ap, long double); \
887 else \
888 the_arg.pa_double = va_arg (ap, double); \
889 ptr = (const void *) &the_arg; \
890 \
891 function_done = __printf_fphex (s, &info, &ptr); \
892 } \
893 else \
894 { \
895 ptr = (const void *) &args_value[fspec->data_arg]; \
896 if (__ldbl_is_dbl) \
897 fspec->info.is_long_double = 0; \
898 \
899 function_done = __printf_fphex (s, &fspec->info, &ptr); \
900 } \
901 \
902 if (function_done < 0) \
903 { \
904 /* Error in print handler; up to handler to set errno. */ \
905 done = -1; \
906 goto all_done; \
907 } \
908 \
909 done_add (function_done); \
910 } \
911 break; \
912 \
913 LABEL (form_pointer): \
914 /* Generic pointer. */ \
915 { \
916 const void *ptr; \
917 if (fspec == NULL) \
918 ptr = va_arg (ap, void *); \
919 else \
920 ptr = args_value[fspec->data_arg].pa_pointer; \
921 if (ptr != NULL) \
922 { \
923 /* If the pointer is not NULL, write it as a %#x spec. */ \
924 base = 16; \
925 number.word = (unsigned long int) ptr; \
926 is_negative = 0; \
927 alt = 1; \
928 group = 0; \
929 spec = L_('x'); \
930 goto LABEL (number); \
931 } \
932 else \
933 { \
934 /* Write "(nil)" for a nil pointer. */ \
935 string = (CHAR_T *) L_("(nil)"); \
936 /* Make sure the full string "(nil)" is printed. */ \
937 if (prec < 5) \
938 prec = 5; \
939 is_long = 0; /* This is no wide-char string. */ \
940 goto LABEL (print_string); \
941 } \
942 } \
943 /* NOTREACHED */ \
944 \
945 LABEL (form_number): \
946 if (s->_flags2 & _IO_FLAGS2_FORTIFY) \
947 { \
948 if (! readonly_format) \
949 { \
950 extern int __readonly_area (const void *, size_t) \
951 attribute_hidden; \
952 readonly_format \
953 = __readonly_area (format, ((STR_LEN (format) + 1) \
954 * sizeof (CHAR_T))); \
955 } \
956 if (readonly_format < 0) \
957 __libc_fatal ("*** %n in writable segment detected ***\n"); \
958 } \
959 /* Answer the count of characters written. */ \
960 if (fspec == NULL) \
961 { \
962 if (is_longlong) \
963 *(long long int *) va_arg (ap, void *) = done; \
964 else if (is_long_num) \
965 *(long int *) va_arg (ap, void *) = done; \
966 else if (is_char) \
967 *(char *) va_arg (ap, void *) = done; \
968 else if (!is_short) \
969 *(int *) va_arg (ap, void *) = done; \
970 else \
971 *(short int *) va_arg (ap, void *) = done; \
972 } \
973 else \
974 if (is_longlong) \
975 *(long long int *) args_value[fspec->data_arg].pa_pointer = done; \
976 else if (is_long_num) \
977 *(long int *) args_value[fspec->data_arg].pa_pointer = done; \
978 else if (is_char) \
979 *(char *) args_value[fspec->data_arg].pa_pointer = done; \
980 else if (!is_short) \
981 *(int *) args_value[fspec->data_arg].pa_pointer = done; \
982 else \
983 *(short int *) args_value[fspec->data_arg].pa_pointer = done; \
984 break; \
985 \
986 LABEL (form_strerror): \
987 /* Print description of error ERRNO. */ \
988 string = \
989 (CHAR_T *) __strerror_r (save_errno, (char *) work_buffer, \
990 sizeof work_buffer); \
991 is_long = 0; /* This is no wide-char string. */ \
992 goto LABEL (print_string)
993
994 #ifdef COMPILE_WPRINTF
995 # define process_string_arg(fspec) \
996 LABEL (form_character): \
997 /* Character. */ \
998 if (is_long) \
999 goto LABEL (form_wcharacter); \
1000 --width; /* Account for the character itself. */ \
1001 if (!left) \
1002 PAD (L' '); \
1003 if (fspec == NULL) \
1004 outchar (__btowc ((unsigned char) va_arg (ap, int))); /* Promoted. */ \
1005 else \
1006 outchar (__btowc ((unsigned char) \
1007 args_value[fspec->data_arg].pa_int)); \
1008 if (left) \
1009 PAD (L' '); \
1010 break; \
1011 \
1012 LABEL (form_wcharacter): \
1013 { \
1014 /* Wide character. */ \
1015 --width; \
1016 if (!left) \
1017 PAD (L' '); \
1018 if (fspec == NULL) \
1019 outchar (va_arg (ap, wchar_t)); \
1020 else \
1021 outchar (args_value[fspec->data_arg].pa_wchar); \
1022 if (left) \
1023 PAD (L' '); \
1024 } \
1025 break; \
1026 \
1027 LABEL (form_string): \
1028 { \
1029 size_t len; \
1030 int string_malloced; \
1031 \
1032 /* The string argument could in fact be `char *' or `wchar_t *'. \
1033 But this should not make a difference here. */ \
1034 if (fspec == NULL) \
1035 string = (CHAR_T *) va_arg (ap, const wchar_t *); \
1036 else \
1037 string = (CHAR_T *) args_value[fspec->data_arg].pa_wstring; \
1038 \
1039 /* Entry point for printing other strings. */ \
1040 LABEL (print_string): \
1041 \
1042 string_malloced = 0; \
1043 if (string == NULL) \
1044 { \
1045 /* Write "(null)" if there's space. */ \
1046 if (prec == -1 \
1047 || prec >= (int) (sizeof (null) / sizeof (null[0])) - 1) \
1048 { \
1049 string = (CHAR_T *) null; \
1050 len = (sizeof (null) / sizeof (null[0])) - 1; \
1051 } \
1052 else \
1053 { \
1054 string = (CHAR_T *) L""; \
1055 len = 0; \
1056 } \
1057 } \
1058 else if (!is_long && spec != L_('S')) \
1059 { \
1060 /* This is complicated. We have to transform the multibyte \
1061 string into a wide character string. */ \
1062 const char *mbs = (const char *) string; \
1063 mbstate_t mbstate; \
1064 \
1065 len = prec != -1 ? __strnlen (mbs, (size_t) prec) : strlen (mbs); \
1066 \
1067 /* Allocate dynamically an array which definitely is long \
1068 enough for the wide character version. Each byte in the \
1069 multi-byte string can produce at most one wide character. */ \
1070 if (__libc_use_alloca (len * sizeof (wchar_t))) \
1071 string = (CHAR_T *) alloca (len * sizeof (wchar_t)); \
1072 else if ((string = (CHAR_T *) malloc (len * sizeof (wchar_t))) \
1073 == NULL) \
1074 { \
1075 done = -1; \
1076 goto all_done; \
1077 } \
1078 else \
1079 string_malloced = 1; \
1080 \
1081 memset (&mbstate, '\0', sizeof (mbstate_t)); \
1082 len = __mbsrtowcs (string, &mbs, len, &mbstate); \
1083 if (len == (size_t) -1) \
1084 { \
1085 /* Illegal multibyte character. */ \
1086 done = -1; \
1087 goto all_done; \
1088 } \
1089 } \
1090 else \
1091 { \
1092 if (prec != -1) \
1093 /* Search for the end of the string, but don't search past \
1094 the length specified by the precision. */ \
1095 len = __wcsnlen (string, prec); \
1096 else \
1097 len = __wcslen (string); \
1098 } \
1099 \
1100 if ((width -= len) < 0) \
1101 { \
1102 outstring (string, len); \
1103 break; \
1104 } \
1105 \
1106 if (!left) \
1107 PAD (L' '); \
1108 outstring (string, len); \
1109 if (left) \
1110 PAD (L' '); \
1111 if (__glibc_unlikely (string_malloced)) \
1112 free (string); \
1113 } \
1114 break;
1115 #else
1116 # define process_string_arg(fspec) \
1117 LABEL (form_character): \
1118 /* Character. */ \
1119 if (is_long) \
1120 goto LABEL (form_wcharacter); \
1121 --width; /* Account for the character itself. */ \
1122 if (!left) \
1123 PAD (' '); \
1124 if (fspec == NULL) \
1125 outchar ((unsigned char) va_arg (ap, int)); /* Promoted. */ \
1126 else \
1127 outchar ((unsigned char) args_value[fspec->data_arg].pa_int); \
1128 if (left) \
1129 PAD (' '); \
1130 break; \
1131 \
1132 LABEL (form_wcharacter): \
1133 { \
1134 /* Wide character. */ \
1135 char buf[MB_CUR_MAX]; \
1136 mbstate_t mbstate; \
1137 size_t len; \
1138 \
1139 memset (&mbstate, '\0', sizeof (mbstate_t)); \
1140 len = __wcrtomb (buf, (fspec == NULL ? va_arg (ap, wchar_t) \
1141 : args_value[fspec->data_arg].pa_wchar), \
1142 &mbstate); \
1143 if (len == (size_t) -1) \
1144 { \
1145 /* Something went wrong during the conversion. Bail out. */ \
1146 done = -1; \
1147 goto all_done; \
1148 } \
1149 width -= len; \
1150 if (!left) \
1151 PAD (' '); \
1152 outstring (buf, len); \
1153 if (left) \
1154 PAD (' '); \
1155 } \
1156 break; \
1157 \
1158 LABEL (form_string): \
1159 { \
1160 size_t len; \
1161 int string_malloced; \
1162 \
1163 /* The string argument could in fact be `char *' or `wchar_t *'. \
1164 But this should not make a difference here. */ \
1165 if (fspec == NULL) \
1166 string = (char *) va_arg (ap, const char *); \
1167 else \
1168 string = (char *) args_value[fspec->data_arg].pa_string; \
1169 \
1170 /* Entry point for printing other strings. */ \
1171 LABEL (print_string): \
1172 \
1173 string_malloced = 0; \
1174 if (string == NULL) \
1175 { \
1176 /* Write "(null)" if there's space. */ \
1177 if (prec == -1 || prec >= (int) sizeof (null) - 1) \
1178 { \
1179 string = (char *) null; \
1180 len = sizeof (null) - 1; \
1181 } \
1182 else \
1183 { \
1184 string = (char *) ""; \
1185 len = 0; \
1186 } \
1187 } \
1188 else if (!is_long && spec != L_('S')) \
1189 { \
1190 if (prec != -1) \
1191 /* Search for the end of the string, but don't search past \
1192 the length (in bytes) specified by the precision. */ \
1193 len = __strnlen (string, prec); \
1194 else \
1195 len = strlen (string); \
1196 } \
1197 else \
1198 { \
1199 const wchar_t *s2 = (const wchar_t *) string; \
1200 mbstate_t mbstate; \
1201 \
1202 memset (&mbstate, '\0', sizeof (mbstate_t)); \
1203 \
1204 if (prec >= 0) \
1205 { \
1206 /* The string `s2' might not be NUL terminated. */ \
1207 if (__libc_use_alloca (prec)) \
1208 string = (char *) alloca (prec); \
1209 else if ((string = (char *) malloc (prec)) == NULL) \
1210 { \
1211 done = -1; \
1212 goto all_done; \
1213 } \
1214 else \
1215 string_malloced = 1; \
1216 len = __wcsrtombs (string, &s2, prec, &mbstate); \
1217 } \
1218 else \
1219 { \
1220 len = __wcsrtombs (NULL, &s2, 0, &mbstate); \
1221 if (len != (size_t) -1) \
1222 { \
1223 assert (__mbsinit (&mbstate)); \
1224 s2 = (const wchar_t *) string; \
1225 if (__libc_use_alloca (len + 1)) \
1226 string = (char *) alloca (len + 1); \
1227 else if ((string = (char *) malloc (len + 1)) == NULL) \
1228 { \
1229 done = -1; \
1230 goto all_done; \
1231 } \
1232 else \
1233 string_malloced = 1; \
1234 (void) __wcsrtombs (string, &s2, len + 1, &mbstate); \
1235 } \
1236 } \
1237 \
1238 if (len == (size_t) -1) \
1239 { \
1240 /* Illegal wide-character string. */ \
1241 done = -1; \
1242 goto all_done; \
1243 } \
1244 } \
1245 \
1246 if ((width -= len) < 0) \
1247 { \
1248 outstring (string, len); \
1249 break; \
1250 } \
1251 \
1252 if (!left) \
1253 PAD (' '); \
1254 outstring (string, len); \
1255 if (left) \
1256 PAD (' '); \
1257 if (__glibc_unlikely (string_malloced)) \
1258 free (string); \
1259 } \
1260 break;
1261 #endif
1262
1263 /* Orient the stream. */
1264 #ifdef ORIENT
1265 ORIENT;
1266 #endif
1267
1268 /* Sanity check of arguments. */
1269 ARGCHECK (s, format);
1270
1271 #ifdef ORIENT
1272 /* Check for correct orientation. */
1273 if (_IO_vtable_offset (s) == 0 &&
1274 _IO_fwide (s, sizeof (CHAR_T) == 1 ? -1 : 1)
1275 != (sizeof (CHAR_T) == 1 ? -1 : 1))
1276 /* The stream is already oriented otherwise. */
1277 return EOF;
1278 #endif
1279
1280 if (UNBUFFERED_P (s))
1281 /* Use a helper function which will allocate a local temporary buffer
1282 for the stream and then call us again. */
1283 return buffered_vfprintf (s, format, ap);
1284
1285 /* Initialize local variables. */
1286 done = 0;
1287 grouping = (const char *) -1;
1288 #ifdef __va_copy
1289 /* This macro will be available soon in gcc's <stdarg.h>. We need it
1290 since on some systems `va_list' is not an integral type. */
1291 __va_copy (ap_save, ap);
1292 #else
1293 ap_save = ap;
1294 #endif
1295 nspecs_done = 0;
1296
1297 #ifdef COMPILE_WPRINTF
1298 /* Find the first format specifier. */
1299 f = lead_str_end = __find_specwc ((const UCHAR_T *) format);
1300 #else
1301 /* Find the first format specifier. */
1302 f = lead_str_end = __find_specmb ((const UCHAR_T *) format);
1303 #endif
1304
1305 /* Lock stream. */
1306 _IO_cleanup_region_start ((void (*) (void *)) &_IO_funlockfile, s);
1307 _IO_flockfile (s);
1308
1309 /* Write the literal text before the first format. */
1310 outstring ((const UCHAR_T *) format,
1311 lead_str_end - (const UCHAR_T *) format);
1312
1313 /* If we only have to print a simple string, return now. */
1314 if (*f == L_('\0'))
1315 goto all_done;
1316
1317 /* Use the slow path in case any printf handler is registered. */
1318 if (__glibc_unlikely (__printf_function_table != NULL
1319 || __printf_modifier_table != NULL
1320 || __printf_va_arg_table != NULL))
1321 goto do_positional;
1322
1323 /* Process whole format string. */
1324 do
1325 {
1326 #ifdef SHARED
1327 # define REF(Name) &&do_##Name - &&do_form_unknown
1328 #else
1329 # define REF(Name) &&do_##Name
1330 #endif
1331 #define LABEL(Name) do_##Name
1332 STEP0_3_TABLE;
1333 STEP4_TABLE;
1334
1335 union printf_arg *args_value; /* This is not used here but ... */
1336 int is_negative; /* Flag for negative number. */
1337 union
1338 {
1339 unsigned long long int longlong;
1340 unsigned long int word;
1341 } number;
1342 int base;
1343 union printf_arg the_arg;
1344 CHAR_T *string; /* Pointer to argument string. */
1345 int alt = 0; /* Alternate format. */
1346 int space = 0; /* Use space prefix if no sign is needed. */
1347 int left = 0; /* Left-justify output. */
1348 int showsign = 0; /* Always begin with plus or minus sign. */
1349 int group = 0; /* Print numbers according grouping rules. */
1350 int is_long_double = 0; /* Argument is long double/ long long int. */
1351 int is_short = 0; /* Argument is short int. */
1352 int is_long = 0; /* Argument is long int. */
1353 int is_char = 0; /* Argument is promoted (unsigned) char. */
1354 int width = 0; /* Width of output; 0 means none specified. */
1355 int prec = -1; /* Precision of output; -1 means none specified. */
1356 /* This flag is set by the 'I' modifier and selects the use of the
1357 `outdigits' as determined by the current locale. */
1358 int use_outdigits = 0;
1359 UCHAR_T pad = L_(' ');/* Padding character. */
1360 CHAR_T spec;
1361
1362 workstart = NULL;
1363 workend = &work_buffer[sizeof (work_buffer) / sizeof (CHAR_T)];
1364
1365 /* Get current character in format string. */
1366 JUMP (*++f, step0_jumps);
1367
1368 /* ' ' flag. */
1369 LABEL (flag_space):
1370 space = 1;
1371 JUMP (*++f, step0_jumps);
1372
1373 /* '+' flag. */
1374 LABEL (flag_plus):
1375 showsign = 1;
1376 JUMP (*++f, step0_jumps);
1377
1378 /* The '-' flag. */
1379 LABEL (flag_minus):
1380 left = 1;
1381 pad = L_(' ');
1382 JUMP (*++f, step0_jumps);
1383
1384 /* The '#' flag. */
1385 LABEL (flag_hash):
1386 alt = 1;
1387 JUMP (*++f, step0_jumps);
1388
1389 /* The '0' flag. */
1390 LABEL (flag_zero):
1391 if (!left)
1392 pad = L_('0');
1393 JUMP (*++f, step0_jumps);
1394
1395 /* The '\'' flag. */
1396 LABEL (flag_quote):
1397 group = 1;
1398
1399 if (grouping == (const char *) -1)
1400 {
1401 #ifdef COMPILE_WPRINTF
1402 thousands_sep = _NL_CURRENT_WORD (LC_NUMERIC,
1403 _NL_NUMERIC_THOUSANDS_SEP_WC);
1404 #else
1405 thousands_sep = _NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP);
1406 #endif
1407
1408 grouping = _NL_CURRENT (LC_NUMERIC, GROUPING);
1409 if (*grouping == '\0' || *grouping == CHAR_MAX
1410 #ifdef COMPILE_WPRINTF
1411 || thousands_sep == L'\0'
1412 #else
1413 || *thousands_sep == '\0'
1414 #endif
1415 )
1416 grouping = NULL;
1417 }
1418 JUMP (*++f, step0_jumps);
1419
1420 LABEL (flag_i18n):
1421 use_outdigits = 1;
1422 JUMP (*++f, step0_jumps);
1423
1424 /* Get width from argument. */
1425 LABEL (width_asterics):
1426 {
1427 const UCHAR_T *tmp; /* Temporary value. */
1428
1429 tmp = ++f;
1430 if (ISDIGIT (*tmp))
1431 {
1432 int pos = read_int (&tmp);
1433
1434 if (pos == -1)
1435 {
1436 __set_errno (EOVERFLOW);
1437 done = -1;
1438 goto all_done;
1439 }
1440
1441 if (pos && *tmp == L_('$'))
1442 /* The width comes from a positional parameter. */
1443 goto do_positional;
1444 }
1445 width = va_arg (ap, int);
1446
1447 /* Negative width means left justified. */
1448 if (width < 0)
1449 {
1450 width = -width;
1451 pad = L_(' ');
1452 left = 1;
1453 }
1454
1455 if (__glibc_unlikely (width >= INT_MAX / sizeof (CHAR_T) - 32))
1456 {
1457 __set_errno (EOVERFLOW);
1458 done = -1;
1459 goto all_done;
1460 }
1461
1462 if (width >= sizeof (work_buffer) / sizeof (work_buffer[0]) - 32)
1463 {
1464 /* We have to use a special buffer. The "32" is just a safe
1465 bet for all the output which is not counted in the width. */
1466 size_t needed = ((size_t) width + 32) * sizeof (CHAR_T);
1467 if (__libc_use_alloca (needed))
1468 workend = (CHAR_T *) alloca (needed) + width + 32;
1469 else
1470 {
1471 workstart = (CHAR_T *) malloc (needed);
1472 if (workstart == NULL)
1473 {
1474 done = -1;
1475 goto all_done;
1476 }
1477 workend = workstart + width + 32;
1478 }
1479 }
1480 }
1481 JUMP (*f, step1_jumps);
1482
1483 /* Given width in format string. */
1484 LABEL (width):
1485 width = read_int (&f);
1486
1487 if (__glibc_unlikely (width == -1
1488 || width >= INT_MAX / sizeof (CHAR_T) - 32))
1489 {
1490 __set_errno (EOVERFLOW);
1491 done = -1;
1492 goto all_done;
1493 }
1494
1495 if (width >= sizeof (work_buffer) / sizeof (work_buffer[0]) - 32)
1496 {
1497 /* We have to use a special buffer. The "32" is just a safe
1498 bet for all the output which is not counted in the width. */
1499 size_t needed = ((size_t) width + 32) * sizeof (CHAR_T);
1500 if (__libc_use_alloca (needed))
1501 workend = (CHAR_T *) alloca (needed) + width + 32;
1502 else
1503 {
1504 workstart = (CHAR_T *) malloc (needed);
1505 if (workstart == NULL)
1506 {
1507 done = -1;
1508 goto all_done;
1509 }
1510 workend = workstart + width + 32;
1511 }
1512 }
1513 if (*f == L_('$'))
1514 /* Oh, oh. The argument comes from a positional parameter. */
1515 goto do_positional;
1516 JUMP (*f, step1_jumps);
1517
1518 LABEL (precision):
1519 ++f;
1520 if (*f == L_('*'))
1521 {
1522 const UCHAR_T *tmp; /* Temporary value. */
1523
1524 tmp = ++f;
1525 if (ISDIGIT (*tmp))
1526 {
1527 int pos = read_int (&tmp);
1528
1529 if (pos == -1)
1530 {
1531 __set_errno (EOVERFLOW);
1532 done = -1;
1533 goto all_done;
1534 }
1535
1536 if (pos && *tmp == L_('$'))
1537 /* The precision comes from a positional parameter. */
1538 goto do_positional;
1539 }
1540 prec = va_arg (ap, int);
1541
1542 /* If the precision is negative the precision is omitted. */
1543 if (prec < 0)
1544 prec = -1;
1545 }
1546 else if (ISDIGIT (*f))
1547 {
1548 prec = read_int (&f);
1549
1550 /* The precision was specified in this case as an extremely
1551 large positive value. */
1552 if (prec == -1)
1553 {
1554 __set_errno (EOVERFLOW);
1555 done = -1;
1556 goto all_done;
1557 }
1558 }
1559 else
1560 prec = 0;
1561 if (prec > width
1562 && prec > sizeof (work_buffer) / sizeof (work_buffer[0]) - 32)
1563 {
1564 if (__glibc_unlikely (prec >= INT_MAX / sizeof (CHAR_T) - 32))
1565 {
1566 __set_errno (EOVERFLOW);
1567 done = -1;
1568 goto all_done;
1569 }
1570 size_t needed = ((size_t) prec + 32) * sizeof (CHAR_T);
1571
1572 if (__libc_use_alloca (needed))
1573 workend = (CHAR_T *) alloca (needed) + prec + 32;
1574 else
1575 {
1576 workstart = (CHAR_T *) malloc (needed);
1577 if (workstart == NULL)
1578 {
1579 done = -1;
1580 goto all_done;
1581 }
1582 workend = workstart + prec + 32;
1583 }
1584 }
1585 JUMP (*f, step2_jumps);
1586
1587 /* Process 'h' modifier. There might another 'h' following. */
1588 LABEL (mod_half):
1589 is_short = 1;
1590 JUMP (*++f, step3a_jumps);
1591
1592 /* Process 'hh' modifier. */
1593 LABEL (mod_halfhalf):
1594 is_short = 0;
1595 is_char = 1;
1596 JUMP (*++f, step4_jumps);
1597
1598 /* Process 'l' modifier. There might another 'l' following. */
1599 LABEL (mod_long):
1600 is_long = 1;
1601 JUMP (*++f, step3b_jumps);
1602
1603 /* Process 'L', 'q', or 'll' modifier. No other modifier is
1604 allowed to follow. */
1605 LABEL (mod_longlong):
1606 is_long_double = 1;
1607 is_long = 1;
1608 JUMP (*++f, step4_jumps);
1609
1610 LABEL (mod_size_t):
1611 is_long_double = sizeof (size_t) > sizeof (unsigned long int);
1612 is_long = sizeof (size_t) > sizeof (unsigned int);
1613 JUMP (*++f, step4_jumps);
1614
1615 LABEL (mod_ptrdiff_t):
1616 is_long_double = sizeof (ptrdiff_t) > sizeof (unsigned long int);
1617 is_long = sizeof (ptrdiff_t) > sizeof (unsigned int);
1618 JUMP (*++f, step4_jumps);
1619
1620 LABEL (mod_intmax_t):
1621 is_long_double = sizeof (intmax_t) > sizeof (unsigned long int);
1622 is_long = sizeof (intmax_t) > sizeof (unsigned int);
1623 JUMP (*++f, step4_jumps);
1624
1625 /* Process current format. */
1626 while (1)
1627 {
1628 process_arg (((struct printf_spec *) NULL));
1629 process_string_arg (((struct printf_spec *) NULL));
1630
1631 LABEL (form_unknown):
1632 if (spec == L_('\0'))
1633 {
1634 /* The format string ended before the specifier is complete. */
1635 __set_errno (EINVAL);
1636 done = -1;
1637 goto all_done;
1638 }
1639
1640 /* If we are in the fast loop force entering the complicated
1641 one. */
1642 goto do_positional;
1643 }
1644
1645 /* The format is correctly handled. */
1646 ++nspecs_done;
1647
1648 if (__glibc_unlikely (workstart != NULL))
1649 free (workstart);
1650 workstart = NULL;
1651
1652 /* Look for next format specifier. */
1653 #ifdef COMPILE_WPRINTF
1654 f = __find_specwc ((end_of_spec = ++f));
1655 #else
1656 f = __find_specmb ((end_of_spec = ++f));
1657 #endif
1658
1659 /* Write the following constant string. */
1660 outstring (end_of_spec, f - end_of_spec);
1661 }
1662 while (*f != L_('\0'));
1663
1664 /* Unlock stream and return. */
1665 goto all_done;
1666
1667 /* Here starts the more complex loop to handle positional parameters. */
1668 do_positional:
1669 {
1670 /* Array with information about the needed arguments. This has to
1671 be dynamically extensible. */
1672 size_t nspecs = 0;
1673 /* A more or less arbitrary start value. */
1674 size_t nspecs_size = 32 * sizeof (struct printf_spec);
1675 struct printf_spec *specs = alloca (nspecs_size);
1676
1677 /* The number of arguments the format string requests. This will
1678 determine the size of the array needed to store the argument
1679 attributes. */
1680 size_t nargs = 0;
1681 size_t bytes_per_arg;
1682 union printf_arg *args_value;
1683 int *args_size;
1684 int *args_type;
1685
1686 /* Positional parameters refer to arguments directly. This could
1687 also determine the maximum number of arguments. Track the
1688 maximum number. */
1689 size_t max_ref_arg = 0;
1690
1691 /* Just a counter. */
1692 size_t cnt;
1693
1694 if (__glibc_unlikely (workstart != NULL))
1695 free (workstart);
1696 workstart = NULL;
1697
1698 if (grouping == (const char *) -1)
1699 {
1700 #ifdef COMPILE_WPRINTF
1701 thousands_sep = _NL_CURRENT_WORD (LC_NUMERIC,
1702 _NL_NUMERIC_THOUSANDS_SEP_WC);
1703 #else
1704 thousands_sep = _NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP);
1705 #endif
1706
1707 grouping = _NL_CURRENT (LC_NUMERIC, GROUPING);
1708 if (*grouping == '\0' || *grouping == CHAR_MAX)
1709 grouping = NULL;
1710 }
1711
1712 for (f = lead_str_end; *f != L_('\0'); f = specs[nspecs++].next_fmt)
1713 {
1714 if (nspecs * sizeof (*specs) >= nspecs_size)
1715 {
1716 /* Extend the array of format specifiers. */
1717 struct printf_spec *old = specs;
1718 specs = extend_alloca (specs, nspecs_size, 2 * nspecs_size);
1719
1720 /* Copy the old array's elements to the new space. */
1721 memmove (specs, old, nspecs * sizeof (*specs));
1722 }
1723
1724 /* Parse the format specifier. */
1725 #ifdef COMPILE_WPRINTF
1726 nargs += __parse_one_specwc (f, nargs, &specs[nspecs], &max_ref_arg);
1727 #else
1728 nargs += __parse_one_specmb (f, nargs, &specs[nspecs], &max_ref_arg);
1729 #endif
1730 }
1731
1732 /* Determine the number of arguments the format string consumes. */
1733 nargs = MAX (nargs, max_ref_arg);
1734 /* Calculate total size needed to represent a single argument across
1735 all three argument-related arrays. */
1736 bytes_per_arg = (sizeof (*args_value) + sizeof (*args_size)
1737 + sizeof (*args_type));
1738
1739 /* Check for potential integer overflow. */
1740 if (__glibc_unlikely (nargs > INT_MAX / bytes_per_arg))
1741 {
1742 __set_errno (EOVERFLOW);
1743 done = -1;
1744 goto all_done;
1745 }
1746
1747 /* Allocate memory for all three argument arrays. */
1748 if (__libc_use_alloca (nargs * bytes_per_arg))
1749 args_value = alloca (nargs * bytes_per_arg);
1750 else
1751 {
1752 args_value = args_malloced = malloc (nargs * bytes_per_arg);
1753 if (args_value == NULL)
1754 {
1755 done = -1;
1756 goto all_done;
1757 }
1758 }
1759
1760 /* Set up the remaining two arrays to each point past the end of the
1761 prior array, since space for all three has been allocated now. */
1762 args_size = &args_value[nargs].pa_int;
1763 args_type = &args_size[nargs];
1764 memset (args_type, s->_flags2 & _IO_FLAGS2_FORTIFY ? '\xff' : '\0',
1765 nargs * sizeof (*args_type));
1766
1767 /* XXX Could do sanity check here: If any element in ARGS_TYPE is
1768 still zero after this loop, format is invalid. For now we
1769 simply use 0 as the value. */
1770
1771 /* Fill in the types of all the arguments. */
1772 for (cnt = 0; cnt < nspecs; ++cnt)
1773 {
1774 /* If the width is determined by an argument this is an int. */
1775 if (specs[cnt].width_arg != -1)
1776 args_type[specs[cnt].width_arg] = PA_INT;
1777
1778 /* If the precision is determined by an argument this is an int. */
1779 if (specs[cnt].prec_arg != -1)
1780 args_type[specs[cnt].prec_arg] = PA_INT;
1781
1782 switch (specs[cnt].ndata_args)
1783 {
1784 case 0: /* No arguments. */
1785 break;
1786 case 1: /* One argument; we already have the
1787 type and size. */
1788 args_type[specs[cnt].data_arg] = specs[cnt].data_arg_type;
1789 args_size[specs[cnt].data_arg] = specs[cnt].size;
1790 break;
1791 default:
1792 /* We have more than one argument for this format spec.
1793 We must call the arginfo function again to determine
1794 all the types. */
1795 (void) (*__printf_arginfo_table[specs[cnt].info.spec])
1796 (&specs[cnt].info,
1797 specs[cnt].ndata_args, &args_type[specs[cnt].data_arg],
1798 &args_size[specs[cnt].data_arg]);
1799 break;
1800 }
1801 }
1802
1803 /* Now we know all the types and the order. Fill in the argument
1804 values. */
1805 for (cnt = 0; cnt < nargs; ++cnt)
1806 switch (args_type[cnt])
1807 {
1808 #define T(tag, mem, type) \
1809 case tag: \
1810 args_value[cnt].mem = va_arg (ap_save, type); \
1811 break
1812
1813 T (PA_WCHAR, pa_wchar, wint_t);
1814 case PA_CHAR: /* Promoted. */
1815 case PA_INT|PA_FLAG_SHORT: /* Promoted. */
1816 #if LONG_MAX == INT_MAX
1817 case PA_INT|PA_FLAG_LONG:
1818 #endif
1819 T (PA_INT, pa_int, int);
1820 #if LONG_MAX == LONG_LONG_MAX
1821 case PA_INT|PA_FLAG_LONG:
1822 #endif
1823 T (PA_INT|PA_FLAG_LONG_LONG, pa_long_long_int, long long int);
1824 #if LONG_MAX != INT_MAX && LONG_MAX != LONG_LONG_MAX
1825 # error "he?"
1826 #endif
1827 case PA_FLOAT: /* Promoted. */
1828 T (PA_DOUBLE, pa_double, double);
1829 case PA_DOUBLE|PA_FLAG_LONG_DOUBLE:
1830 if (__ldbl_is_dbl)
1831 {
1832 args_value[cnt].pa_double = va_arg (ap_save, double);
1833 args_type[cnt] &= ~PA_FLAG_LONG_DOUBLE;
1834 }
1835 else
1836 args_value[cnt].pa_long_double = va_arg (ap_save, long double);
1837 break;
1838 case PA_STRING: /* All pointers are the same */
1839 case PA_WSTRING: /* All pointers are the same */
1840 T (PA_POINTER, pa_pointer, void *);
1841 #undef T
1842 default:
1843 if ((args_type[cnt] & PA_FLAG_PTR) != 0)
1844 args_value[cnt].pa_pointer = va_arg (ap_save, void *);
1845 else if (__glibc_unlikely (__printf_va_arg_table != NULL)
1846 && __printf_va_arg_table[args_type[cnt] - PA_LAST] != NULL)
1847 {
1848 args_value[cnt].pa_user = alloca (args_size[cnt]);
1849 (*__printf_va_arg_table[args_type[cnt] - PA_LAST])
1850 (args_value[cnt].pa_user, &ap_save);
1851 }
1852 else
1853 args_value[cnt].pa_long_double = 0.0;
1854 break;
1855 case -1:
1856 /* Error case. Not all parameters appear in N$ format
1857 strings. We have no way to determine their type. */
1858 assert (s->_flags2 & _IO_FLAGS2_FORTIFY);
1859 __libc_fatal ("*** invalid %N$ use detected ***\n");
1860 }
1861
1862 /* Now walk through all format specifiers and process them. */
1863 for (; (size_t) nspecs_done < nspecs; ++nspecs_done)
1864 {
1865 #undef REF
1866 #ifdef SHARED
1867 # define REF(Name) &&do2_##Name - &&do_form_unknown
1868 #else
1869 # define REF(Name) &&do2_##Name
1870 #endif
1871 #undef LABEL
1872 #define LABEL(Name) do2_##Name
1873 STEP4_TABLE;
1874
1875 int is_negative;
1876 union
1877 {
1878 unsigned long long int longlong;
1879 unsigned long int word;
1880 } number;
1881 int base;
1882 union printf_arg the_arg;
1883 CHAR_T *string; /* Pointer to argument string. */
1884
1885 /* Fill variables from values in struct. */
1886 int alt = specs[nspecs_done].info.alt;
1887 int space = specs[nspecs_done].info.space;
1888 int left = specs[nspecs_done].info.left;
1889 int showsign = specs[nspecs_done].info.showsign;
1890 int group = specs[nspecs_done].info.group;
1891 int is_long_double = specs[nspecs_done].info.is_long_double;
1892 int is_short = specs[nspecs_done].info.is_short;
1893 int is_char = specs[nspecs_done].info.is_char;
1894 int is_long = specs[nspecs_done].info.is_long;
1895 int width = specs[nspecs_done].info.width;
1896 int prec = specs[nspecs_done].info.prec;
1897 int use_outdigits = specs[nspecs_done].info.i18n;
1898 char pad = specs[nspecs_done].info.pad;
1899 CHAR_T spec = specs[nspecs_done].info.spec;
1900
1901 workstart = NULL;
1902 workend = &work_buffer[sizeof (work_buffer) / sizeof (CHAR_T)];
1903
1904 /* Fill in last information. */
1905 if (specs[nspecs_done].width_arg != -1)
1906 {
1907 /* Extract the field width from an argument. */
1908 specs[nspecs_done].info.width =
1909 args_value[specs[nspecs_done].width_arg].pa_int;
1910
1911 if (specs[nspecs_done].info.width < 0)
1912 /* If the width value is negative left justification is
1913 selected and the value is taken as being positive. */
1914 {
1915 specs[nspecs_done].info.width *= -1;
1916 left = specs[nspecs_done].info.left = 1;
1917 }
1918 width = specs[nspecs_done].info.width;
1919 }
1920
1921 if (specs[nspecs_done].prec_arg != -1)
1922 {
1923 /* Extract the precision from an argument. */
1924 specs[nspecs_done].info.prec =
1925 args_value[specs[nspecs_done].prec_arg].pa_int;
1926
1927 if (specs[nspecs_done].info.prec < 0)
1928 /* If the precision is negative the precision is
1929 omitted. */
1930 specs[nspecs_done].info.prec = -1;
1931
1932 prec = specs[nspecs_done].info.prec;
1933 }
1934
1935 /* Maybe the buffer is too small. */
1936 if (MAX (prec, width) + 32 > (int) (sizeof (work_buffer)
1937 / sizeof (CHAR_T)))
1938 {
1939 if (__libc_use_alloca ((MAX (prec, width) + 32)
1940 * sizeof (CHAR_T)))
1941 workend = ((CHAR_T *) alloca ((MAX (prec, width) + 32)
1942 * sizeof (CHAR_T))
1943 + (MAX (prec, width) + 32));
1944 else
1945 {
1946 workstart = (CHAR_T *) malloc ((MAX (prec, width) + 32)
1947 * sizeof (CHAR_T));
1948 if (workstart == NULL)
1949 {
1950 done = -1;
1951 goto all_done;
1952 }
1953 workend = workstart + (MAX (prec, width) + 32);
1954 }
1955 }
1956
1957 /* Process format specifiers. */
1958 while (1)
1959 {
1960 extern printf_function **__printf_function_table;
1961 int function_done;
1962
1963 if (spec <= UCHAR_MAX
1964 && __printf_function_table != NULL
1965 && __printf_function_table[(size_t) spec] != NULL)
1966 {
1967 const void **ptr = alloca (specs[nspecs_done].ndata_args
1968 * sizeof (const void *));
1969
1970 /* Fill in an array of pointers to the argument values. */
1971 for (unsigned int i = 0; i < specs[nspecs_done].ndata_args;
1972 ++i)
1973 ptr[i] = &args_value[specs[nspecs_done].data_arg + i];
1974
1975 /* Call the function. */
1976 function_done = __printf_function_table[(size_t) spec]
1977 (s, &specs[nspecs_done].info, ptr);
1978
1979 if (function_done != -2)
1980 {
1981 /* If an error occurred we don't have information
1982 about # of chars. */
1983 if (function_done < 0)
1984 {
1985 /* Function has set errno. */
1986 done = -1;
1987 goto all_done;
1988 }
1989
1990 done_add (function_done);
1991 break;
1992 }
1993 }
1994
1995 JUMP (spec, step4_jumps);
1996
1997 process_arg ((&specs[nspecs_done]));
1998 process_string_arg ((&specs[nspecs_done]));
1999
2000 LABEL (form_unknown):
2001 {
2002 unsigned int i;
2003 const void **ptr;
2004
2005 ptr = alloca (specs[nspecs_done].ndata_args
2006 * sizeof (const void *));
2007
2008 /* Fill in an array of pointers to the argument values. */
2009 for (i = 0; i < specs[nspecs_done].ndata_args; ++i)
2010 ptr[i] = &args_value[specs[nspecs_done].data_arg + i];
2011
2012 /* Call the function. */
2013 function_done = printf_unknown (s, &specs[nspecs_done].info,
2014 ptr);
2015
2016 /* If an error occurred we don't have information about #
2017 of chars. */
2018 if (function_done < 0)
2019 {
2020 /* Function has set errno. */
2021 done = -1;
2022 goto all_done;
2023 }
2024
2025 done_add (function_done);
2026 }
2027 break;
2028 }
2029
2030 if (__glibc_unlikely (workstart != NULL))
2031 free (workstart);
2032 workstart = NULL;
2033
2034 /* Write the following constant string. */
2035 outstring (specs[nspecs_done].end_of_fmt,
2036 specs[nspecs_done].next_fmt
2037 - specs[nspecs_done].end_of_fmt);
2038 }
2039 }
2040
2041 all_done:
2042 if (__glibc_unlikely (args_malloced != NULL))
2043 free (args_malloced);
2044 if (__glibc_unlikely (workstart != NULL))
2045 free (workstart);
2046 /* Unlock the stream. */
2047 _IO_funlockfile (s);
2048 _IO_cleanup_region_end (0);
2049
2050 return done;
2051 }
2052 \f
2053 /* Handle an unknown format specifier. This prints out a canonicalized
2054 representation of the format spec itself. */
2055 static int
2056 printf_unknown (FILE *s, const struct printf_info *info,
2057 const void *const *args)
2058
2059 {
2060 int done = 0;
2061 CHAR_T work_buffer[MAX (sizeof (info->width), sizeof (info->prec)) * 3];
2062 CHAR_T *const workend
2063 = &work_buffer[sizeof (work_buffer) / sizeof (CHAR_T)];
2064 CHAR_T *w;
2065
2066 outchar (L_('%'));
2067
2068 if (info->alt)
2069 outchar (L_('#'));
2070 if (info->group)
2071 outchar (L_('\''));
2072 if (info->showsign)
2073 outchar (L_('+'));
2074 else if (info->space)
2075 outchar (L_(' '));
2076 if (info->left)
2077 outchar (L_('-'));
2078 if (info->pad == L_('0'))
2079 outchar (L_('0'));
2080 if (info->i18n)
2081 outchar (L_('I'));
2082
2083 if (info->width != 0)
2084 {
2085 w = _itoa_word (info->width, workend, 10, 0);
2086 while (w < workend)
2087 outchar (*w++);
2088 }
2089
2090 if (info->prec != -1)
2091 {
2092 outchar (L_('.'));
2093 w = _itoa_word (info->prec, workend, 10, 0);
2094 while (w < workend)
2095 outchar (*w++);
2096 }
2097
2098 if (info->spec != L_('\0'))
2099 outchar (info->spec);
2100
2101 all_done:
2102 return done;
2103 }
2104 \f
2105 /* Group the digits according to the grouping rules of the current locale.
2106 The interpretation of GROUPING is as in `struct lconv' from <locale.h>. */
2107 static CHAR_T *
2108 internal_function
2109 group_number (CHAR_T *w, CHAR_T *rear_ptr, const char *grouping,
2110 #ifdef COMPILE_WPRINTF
2111 wchar_t thousands_sep
2112 #else
2113 const char *thousands_sep
2114 #endif
2115 )
2116 {
2117 int len;
2118 CHAR_T *src, *s;
2119 #ifndef COMPILE_WPRINTF
2120 int tlen = strlen (thousands_sep);
2121 #endif
2122
2123 /* We treat all negative values like CHAR_MAX. */
2124
2125 if (*grouping == CHAR_MAX || *grouping <= 0)
2126 /* No grouping should be done. */
2127 return w;
2128
2129 len = *grouping++;
2130
2131 /* Copy existing string so that nothing gets overwritten. */
2132 src = (CHAR_T *) alloca ((rear_ptr - w) * sizeof (CHAR_T));
2133 s = (CHAR_T *) __mempcpy (src, w,
2134 (rear_ptr - w) * sizeof (CHAR_T));
2135 w = rear_ptr;
2136
2137 /* Process all characters in the string. */
2138 while (s > src)
2139 {
2140 *--w = *--s;
2141
2142 if (--len == 0 && s > src)
2143 {
2144 /* A new group begins. */
2145 #ifdef COMPILE_WPRINTF
2146 *--w = thousands_sep;
2147 #else
2148 int cnt = tlen;
2149 do
2150 *--w = thousands_sep[--cnt];
2151 while (cnt > 0);
2152 #endif
2153
2154 if (*grouping == CHAR_MAX
2155 #if CHAR_MIN < 0
2156 || *grouping < 0
2157 #endif
2158 )
2159 {
2160 /* No further grouping to be done.
2161 Copy the rest of the number. */
2162 do
2163 *--w = *--s;
2164 while (s > src);
2165 break;
2166 }
2167 else if (*grouping != '\0')
2168 /* The previous grouping repeats ad infinitum. */
2169 len = *grouping++;
2170 else
2171 len = grouping[-1];
2172 }
2173 }
2174 return w;
2175 }
2176 \f
2177 /* Helper "class" for `fprintf to unbuffered': creates a temporary buffer. */
2178 struct helper_file
2179 {
2180 struct _IO_FILE_plus _f;
2181 #ifdef COMPILE_WPRINTF
2182 struct _IO_wide_data _wide_data;
2183 #endif
2184 _IO_FILE *_put_stream;
2185 #ifdef _IO_MTSAFE_IO
2186 _IO_lock_t lock;
2187 #endif
2188 };
2189
2190 static int
2191 _IO_helper_overflow (_IO_FILE *s, int c)
2192 {
2193 _IO_FILE *target = ((struct helper_file*) s)->_put_stream;
2194 #ifdef COMPILE_WPRINTF
2195 int used = s->_wide_data->_IO_write_ptr - s->_wide_data->_IO_write_base;
2196 if (used)
2197 {
2198 _IO_size_t written = _IO_sputn (target, s->_wide_data->_IO_write_base,
2199 used);
2200 if (written == 0 || written == WEOF)
2201 return WEOF;
2202 __wmemmove (s->_wide_data->_IO_write_base,
2203 s->_wide_data->_IO_write_base + written,
2204 used - written);
2205 s->_wide_data->_IO_write_ptr -= written;
2206 }
2207 #else
2208 int used = s->_IO_write_ptr - s->_IO_write_base;
2209 if (used)
2210 {
2211 _IO_size_t written = _IO_sputn (target, s->_IO_write_base, used);
2212 if (written == 0 || written == EOF)
2213 return EOF;
2214 memmove (s->_IO_write_base, s->_IO_write_base + written,
2215 used - written);
2216 s->_IO_write_ptr -= written;
2217 }
2218 #endif
2219 return PUTC (c, s);
2220 }
2221
2222 #ifdef COMPILE_WPRINTF
2223 static const struct _IO_jump_t _IO_helper_jumps =
2224 {
2225 JUMP_INIT_DUMMY,
2226 JUMP_INIT (finish, _IO_wdefault_finish),
2227 JUMP_INIT (overflow, _IO_helper_overflow),
2228 JUMP_INIT (underflow, _IO_default_underflow),
2229 JUMP_INIT (uflow, _IO_default_uflow),
2230 JUMP_INIT (pbackfail, (_IO_pbackfail_t) _IO_wdefault_pbackfail),
2231 JUMP_INIT (xsputn, _IO_wdefault_xsputn),
2232 JUMP_INIT (xsgetn, _IO_wdefault_xsgetn),
2233 JUMP_INIT (seekoff, _IO_default_seekoff),
2234 JUMP_INIT (seekpos, _IO_default_seekpos),
2235 JUMP_INIT (setbuf, _IO_default_setbuf),
2236 JUMP_INIT (sync, _IO_default_sync),
2237 JUMP_INIT (doallocate, _IO_wdefault_doallocate),
2238 JUMP_INIT (read, _IO_default_read),
2239 JUMP_INIT (write, _IO_default_write),
2240 JUMP_INIT (seek, _IO_default_seek),
2241 JUMP_INIT (close, _IO_default_close),
2242 JUMP_INIT (stat, _IO_default_stat)
2243 };
2244 #else
2245 static const struct _IO_jump_t _IO_helper_jumps =
2246 {
2247 JUMP_INIT_DUMMY,
2248 JUMP_INIT (finish, _IO_default_finish),
2249 JUMP_INIT (overflow, _IO_helper_overflow),
2250 JUMP_INIT (underflow, _IO_default_underflow),
2251 JUMP_INIT (uflow, _IO_default_uflow),
2252 JUMP_INIT (pbackfail, _IO_default_pbackfail),
2253 JUMP_INIT (xsputn, _IO_default_xsputn),
2254 JUMP_INIT (xsgetn, _IO_default_xsgetn),
2255 JUMP_INIT (seekoff, _IO_default_seekoff),
2256 JUMP_INIT (seekpos, _IO_default_seekpos),
2257 JUMP_INIT (setbuf, _IO_default_setbuf),
2258 JUMP_INIT (sync, _IO_default_sync),
2259 JUMP_INIT (doallocate, _IO_default_doallocate),
2260 JUMP_INIT (read, _IO_default_read),
2261 JUMP_INIT (write, _IO_default_write),
2262 JUMP_INIT (seek, _IO_default_seek),
2263 JUMP_INIT (close, _IO_default_close),
2264 JUMP_INIT (stat, _IO_default_stat)
2265 };
2266 #endif
2267
2268 static int
2269 internal_function
2270 buffered_vfprintf (_IO_FILE *s, const CHAR_T *format,
2271 _IO_va_list args)
2272 {
2273 CHAR_T buf[_IO_BUFSIZ];
2274 struct helper_file helper;
2275 _IO_FILE *hp = (_IO_FILE *) &helper._f;
2276 int result, to_flush;
2277
2278 /* Orient the stream. */
2279 #ifdef ORIENT
2280 ORIENT;
2281 #endif
2282
2283 /* Initialize helper. */
2284 helper._put_stream = s;
2285 #ifdef COMPILE_WPRINTF
2286 hp->_wide_data = &helper._wide_data;
2287 _IO_wsetp (hp, buf, buf + sizeof buf / sizeof (CHAR_T));
2288 hp->_mode = 1;
2289 #else
2290 _IO_setp (hp, buf, buf + sizeof buf);
2291 hp->_mode = -1;
2292 #endif
2293 hp->_IO_file_flags = _IO_MAGIC|_IO_NO_READS|_IO_USER_LOCK;
2294 #if _IO_JUMPS_OFFSET
2295 hp->_vtable_offset = 0;
2296 #endif
2297 #ifdef _IO_MTSAFE_IO
2298 hp->_lock = NULL;
2299 #endif
2300 hp->_flags2 = s->_flags2;
2301 _IO_JUMPS (&helper._f) = (struct _IO_jump_t *) &_IO_helper_jumps;
2302
2303 /* Now print to helper instead. */
2304 #ifndef COMPILE_WPRINTF
2305 result = _IO_vfprintf (hp, format, args);
2306 #else
2307 result = vfprintf (hp, format, args);
2308 #endif
2309
2310 /* Lock stream. */
2311 __libc_cleanup_region_start (1, (void (*) (void *)) &_IO_funlockfile, s);
2312 _IO_flockfile (s);
2313
2314 /* Now flush anything from the helper to the S. */
2315 #ifdef COMPILE_WPRINTF
2316 if ((to_flush = (hp->_wide_data->_IO_write_ptr
2317 - hp->_wide_data->_IO_write_base)) > 0)
2318 {
2319 if ((int) _IO_sputn (s, hp->_wide_data->_IO_write_base, to_flush)
2320 != to_flush)
2321 result = -1;
2322 }
2323 #else
2324 if ((to_flush = hp->_IO_write_ptr - hp->_IO_write_base) > 0)
2325 {
2326 if ((int) _IO_sputn (s, hp->_IO_write_base, to_flush) != to_flush)
2327 result = -1;
2328 }
2329 #endif
2330
2331 /* Unlock the stream. */
2332 _IO_funlockfile (s);
2333 __libc_cleanup_region_end (0);
2334
2335 return result;
2336 }
2337
2338 #undef vfprintf
2339 #ifdef COMPILE_WPRINTF
2340 strong_alias (_IO_vfwprintf, __vfwprintf);
2341 ldbl_weak_alias (_IO_vfwprintf, vfwprintf);
2342 #else
2343 ldbl_strong_alias (_IO_vfprintf_internal, vfprintf);
2344 ldbl_hidden_def (_IO_vfprintf_internal, vfprintf)
2345 ldbl_strong_alias (_IO_vfprintf_internal, _IO_vfprintf);
2346 ldbl_hidden_def (_IO_vfprintf_internal, _IO_vfprintf)
2347 #endif
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