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Consolidate Linux truncate implementations
[glibc.git] / stdio-common / vfprintf.c
blob13ab47a4c287e85e1933006f7f85de72c5ebeefc
1 /* Copyright (C) 1991-2016 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 <libc-lock.h>
28 #include <sys/param.h>
29 #include <_itoa.h>
30 #include <locale/localeinfo.h>
31 #include <stdio.h>
32 #include <scratch_buffer.h>
33
34 /* This code is shared between the standard stdio implementation found
35 in GNU C library and the libio implementation originally found in
36 GNU libg++.
37
38 Beside this it is also shared between the normal and wide character
39 implementation as defined in ISO/IEC 9899:1990/Amendment 1:1995. */
40
41
42 #include <libioP.h>
43 #define FILE _IO_FILE
44 #undef va_list
45 #define va_list _IO_va_list
46 #undef BUFSIZ
47 #define BUFSIZ _IO_BUFSIZ
48 #define ARGCHECK(S, Format) \
49 do \
50 { \
51 /* Check file argument for consistence. */ \
52 CHECK_FILE (S, -1); \
53 if (S->_flags & _IO_NO_WRITES) \
54 { \
55 S->_flags |= _IO_ERR_SEEN; \
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 (__glibc_unlikely (INT_MAX - done < _val)) \
72 { \
73 done = -1; \
74 __set_errno (EOVERFLOW); \
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 typedef const char *THOUSANDS_SEP_T;
86 # define L_(Str) Str
87 # define ISDIGIT(Ch) ((unsigned int) ((Ch) - '0') < 10)
88 # define STR_LEN(Str) strlen (Str)
89
90 # define PUT(F, S, N) _IO_sputn ((F), (S), (N))
91 # define PAD(Padchar) \
92 do { \
93 if (width > 0) \
94 { \
95 _IO_ssize_t written = _IO_padn (s, (Padchar), width); \
96 if (__glibc_unlikely (written != width)) \
97 { \
98 done = -1; \
99 goto all_done; \
100 } \
101 done_add (written); \
102 } \
103 } while (0)
104 # define PUTC(C, F) _IO_putc_unlocked (C, F)
105 # define ORIENT if (_IO_vtable_offset (s) == 0 && _IO_fwide (s, -1) != -1)\
106 return -1
107 #else
108 # define vfprintf _IO_vfwprintf
109 # define CHAR_T wchar_t
110 /* This is a hack!!! There should be a type uwchar_t. */
111 # define UCHAR_T unsigned int /* uwchar_t */
112 # define INT_T wint_t
113 typedef wchar_t THOUSANDS_SEP_T;
114 # define L_(Str) L##Str
115 # define ISDIGIT(Ch) ((unsigned int) ((Ch) - L'0') < 10)
116 # define STR_LEN(Str) __wcslen (Str)
117
118 # include <_itowa.h>
119
120 # define PUT(F, S, N) _IO_sputn ((F), (S), (N))
121 # define PAD(Padchar) \
122 do { \
123 if (width > 0) \
124 { \
125 _IO_ssize_t written = _IO_wpadn (s, (Padchar), width); \
126 if (__glibc_unlikely (written != width)) \
127 { \
128 done = -1; \
129 goto all_done; \
130 } \
131 done_add (written); \
132 } \
133 } while (0)
134 # define PUTC(C, F) _IO_putwc_unlocked (C, F)
135 # define ORIENT if (_IO_fwide (s, 1) != 1) return -1
136
137 # undef _itoa
138 # define _itoa(Val, Buf, Base, Case) _itowa (Val, Buf, Base, Case)
139 # define _itoa_word(Val, Buf, Base, Case) _itowa_word (Val, Buf, Base, Case)
140 # undef EOF
141 # define EOF WEOF
142 #endif
143
144 #include "_i18n_number.h"
145
146 /* Include the shared code for parsing the format string. */
147 #include "printf-parse.h"
148
149
150 #define outchar(Ch) \
151 do \
152 { \
153 const INT_T outc = (Ch); \
154 if (PUTC (outc, s) == EOF || done == INT_MAX) \
155 { \
156 done = -1; \
157 goto all_done; \
158 } \
159 ++done; \
160 } \
161 while (0)
162
163 #define outstring(String, Len) \
164 do \
165 { \
166 assert ((size_t) done <= (size_t) INT_MAX); \
167 if ((size_t) PUT (s, (String), (Len)) != (size_t) (Len)) \
168 { \
169 done = -1; \
170 goto all_done; \
171 } \
172 if (__glibc_unlikely (INT_MAX - done < (Len))) \
173 { \
174 done = -1; \
175 __set_errno (EOVERFLOW); \
176 goto all_done; \
177 } \
178 done += (Len); \
179 } \
180 while (0)
181
182 /* For handling long_double and longlong we use the same flag. If
183 `long' and `long long' are effectively the same type define it to
184 zero. */
185 #if LONG_MAX == LONG_LONG_MAX
186 # define is_longlong 0
187 #else
188 # define is_longlong is_long_double
189 #endif
190
191 /* If `long' and `int' is effectively the same type we don't have to
192 handle `long separately. */
193 #if INT_MAX == LONG_MAX
194 # define is_long_num 0
195 #else
196 # define is_long_num is_long
197 #endif
198
199
200 /* Global constants. */
201 static const CHAR_T null[] = L_("(null)");
202
203 /* Size of the work_buffer variable (in characters, not bytes. */
204 enum { WORK_BUFFER_SIZE = 1000 };
205
206 /* This table maps a character into a number representing a class. In
207 each step there is a destination label for each class. */
208 static const uint8_t jump_table[] =
209 {
210 /* ' ' */ 1, 0, 0, /* '#' */ 4,
211 0, /* '%' */ 14, 0, /* '\''*/ 6,
212 0, 0, /* '*' */ 7, /* '+' */ 2,
213 0, /* '-' */ 3, /* '.' */ 9, 0,
214 /* '0' */ 5, /* '1' */ 8, /* '2' */ 8, /* '3' */ 8,
215 /* '4' */ 8, /* '5' */ 8, /* '6' */ 8, /* '7' */ 8,
216 /* '8' */ 8, /* '9' */ 8, 0, 0,
217 0, 0, 0, 0,
218 0, /* 'A' */ 26, 0, /* 'C' */ 25,
219 0, /* 'E' */ 19, /* F */ 19, /* 'G' */ 19,
220 0, /* 'I' */ 29, 0, 0,
221 /* 'L' */ 12, 0, 0, 0,
222 0, 0, 0, /* 'S' */ 21,
223 0, 0, 0, 0,
224 /* 'X' */ 18, 0, /* 'Z' */ 13, 0,
225 0, 0, 0, 0,
226 0, /* 'a' */ 26, 0, /* 'c' */ 20,
227 /* 'd' */ 15, /* 'e' */ 19, /* 'f' */ 19, /* 'g' */ 19,
228 /* 'h' */ 10, /* 'i' */ 15, /* 'j' */ 28, 0,
229 /* 'l' */ 11, /* 'm' */ 24, /* 'n' */ 23, /* 'o' */ 17,
230 /* 'p' */ 22, /* 'q' */ 12, 0, /* 's' */ 21,
231 /* 't' */ 27, /* 'u' */ 16, 0, 0,
232 /* 'x' */ 18, 0, /* 'z' */ 13
233 };
234
235 #define NOT_IN_JUMP_RANGE(Ch) ((Ch) < L_(' ') || (Ch) > L_('z'))
236 #define CHAR_CLASS(Ch) (jump_table[(INT_T) (Ch) - L_(' ')])
237 #define LABEL(Name) do_##Name
238 #ifdef SHARED
239 /* 'int' is enough and it saves some space on 64 bit systems. */
240 # define JUMP_TABLE_TYPE const int
241 # define JUMP_TABLE_BASE_LABEL do_form_unknown
242 # define REF(Name) &&do_##Name - &&JUMP_TABLE_BASE_LABEL
243 # define JUMP(ChExpr, table) \
244 do \
245 { \
246 int offset; \
247 void *ptr; \
248 spec = (ChExpr); \
249 offset = NOT_IN_JUMP_RANGE (spec) ? REF (form_unknown) \
250 : table[CHAR_CLASS (spec)]; \
251 ptr = &&JUMP_TABLE_BASE_LABEL + offset; \
252 goto *ptr; \
253 } \
254 while (0)
255 #else
256 # define JUMP_TABLE_TYPE const void *const
257 # define REF(Name) &&do_##Name
258 # define JUMP(ChExpr, table) \
259 do \
260 { \
261 const void *ptr; \
262 spec = (ChExpr); \
263 ptr = NOT_IN_JUMP_RANGE (spec) ? REF (form_unknown) \
264 : table[CHAR_CLASS (spec)]; \
265 goto *ptr; \
266 } \
267 while (0)
268 #endif
269
270 #define STEP0_3_TABLE \
271 /* Step 0: at the beginning. */ \
272 static JUMP_TABLE_TYPE step0_jumps[30] = \
273 { \
274 REF (form_unknown), \
275 REF (flag_space), /* for ' ' */ \
276 REF (flag_plus), /* for '+' */ \
277 REF (flag_minus), /* for '-' */ \
278 REF (flag_hash), /* for '<hash>' */ \
279 REF (flag_zero), /* for '0' */ \
280 REF (flag_quote), /* for '\'' */ \
281 REF (width_asterics), /* for '*' */ \
282 REF (width), /* for '1'...'9' */ \
283 REF (precision), /* for '.' */ \
284 REF (mod_half), /* for 'h' */ \
285 REF (mod_long), /* for 'l' */ \
286 REF (mod_longlong), /* for 'L', 'q' */ \
287 REF (mod_size_t), /* for 'z', 'Z' */ \
288 REF (form_percent), /* for '%' */ \
289 REF (form_integer), /* for 'd', 'i' */ \
290 REF (form_unsigned), /* for 'u' */ \
291 REF (form_octal), /* for 'o' */ \
292 REF (form_hexa), /* for 'X', 'x' */ \
293 REF (form_float), /* for 'E', 'e', 'F', 'f', 'G', 'g' */ \
294 REF (form_character), /* for 'c' */ \
295 REF (form_string), /* for 's', 'S' */ \
296 REF (form_pointer), /* for 'p' */ \
297 REF (form_number), /* for 'n' */ \
298 REF (form_strerror), /* for 'm' */ \
299 REF (form_wcharacter), /* for 'C' */ \
300 REF (form_floathex), /* for 'A', 'a' */ \
301 REF (mod_ptrdiff_t), /* for 't' */ \
302 REF (mod_intmax_t), /* for 'j' */ \
303 REF (flag_i18n), /* for 'I' */ \
304 }; \
305 /* Step 1: after processing width. */ \
306 static JUMP_TABLE_TYPE step1_jumps[30] = \
307 { \
308 REF (form_unknown), \
309 REF (form_unknown), /* for ' ' */ \
310 REF (form_unknown), /* for '+' */ \
311 REF (form_unknown), /* for '-' */ \
312 REF (form_unknown), /* for '<hash>' */ \
313 REF (form_unknown), /* for '0' */ \
314 REF (form_unknown), /* for '\'' */ \
315 REF (form_unknown), /* for '*' */ \
316 REF (form_unknown), /* for '1'...'9' */ \
317 REF (precision), /* for '.' */ \
318 REF (mod_half), /* for 'h' */ \
319 REF (mod_long), /* for 'l' */ \
320 REF (mod_longlong), /* for 'L', 'q' */ \
321 REF (mod_size_t), /* for 'z', 'Z' */ \
322 REF (form_percent), /* for '%' */ \
323 REF (form_integer), /* for 'd', 'i' */ \
324 REF (form_unsigned), /* for 'u' */ \
325 REF (form_octal), /* for 'o' */ \
326 REF (form_hexa), /* for 'X', 'x' */ \
327 REF (form_float), /* for 'E', 'e', 'F', 'f', 'G', 'g' */ \
328 REF (form_character), /* for 'c' */ \
329 REF (form_string), /* for 's', 'S' */ \
330 REF (form_pointer), /* for 'p' */ \
331 REF (form_number), /* for 'n' */ \
332 REF (form_strerror), /* for 'm' */ \
333 REF (form_wcharacter), /* for 'C' */ \
334 REF (form_floathex), /* for 'A', 'a' */ \
335 REF (mod_ptrdiff_t), /* for 't' */ \
336 REF (mod_intmax_t), /* for 'j' */ \
337 REF (form_unknown) /* for 'I' */ \
338 }; \
339 /* Step 2: after processing precision. */ \
340 static JUMP_TABLE_TYPE step2_jumps[30] = \
341 { \
342 REF (form_unknown), \
343 REF (form_unknown), /* for ' ' */ \
344 REF (form_unknown), /* for '+' */ \
345 REF (form_unknown), /* for '-' */ \
346 REF (form_unknown), /* for '<hash>' */ \
347 REF (form_unknown), /* for '0' */ \
348 REF (form_unknown), /* for '\'' */ \
349 REF (form_unknown), /* for '*' */ \
350 REF (form_unknown), /* for '1'...'9' */ \
351 REF (form_unknown), /* for '.' */ \
352 REF (mod_half), /* for 'h' */ \
353 REF (mod_long), /* for 'l' */ \
354 REF (mod_longlong), /* for 'L', 'q' */ \
355 REF (mod_size_t), /* for 'z', 'Z' */ \
356 REF (form_percent), /* for '%' */ \
357 REF (form_integer), /* for 'd', 'i' */ \
358 REF (form_unsigned), /* for 'u' */ \
359 REF (form_octal), /* for 'o' */ \
360 REF (form_hexa), /* for 'X', 'x' */ \
361 REF (form_float), /* for 'E', 'e', 'F', 'f', 'G', 'g' */ \
362 REF (form_character), /* for 'c' */ \
363 REF (form_string), /* for 's', 'S' */ \
364 REF (form_pointer), /* for 'p' */ \
365 REF (form_number), /* for 'n' */ \
366 REF (form_strerror), /* for 'm' */ \
367 REF (form_wcharacter), /* for 'C' */ \
368 REF (form_floathex), /* for 'A', 'a' */ \
369 REF (mod_ptrdiff_t), /* for 't' */ \
370 REF (mod_intmax_t), /* for 'j' */ \
371 REF (form_unknown) /* for 'I' */ \
372 }; \
373 /* Step 3a: after processing first 'h' modifier. */ \
374 static JUMP_TABLE_TYPE step3a_jumps[30] = \
375 { \
376 REF (form_unknown), \
377 REF (form_unknown), /* for ' ' */ \
378 REF (form_unknown), /* for '+' */ \
379 REF (form_unknown), /* for '-' */ \
380 REF (form_unknown), /* for '<hash>' */ \
381 REF (form_unknown), /* for '0' */ \
382 REF (form_unknown), /* for '\'' */ \
383 REF (form_unknown), /* for '*' */ \
384 REF (form_unknown), /* for '1'...'9' */ \
385 REF (form_unknown), /* for '.' */ \
386 REF (mod_halfhalf), /* for 'h' */ \
387 REF (form_unknown), /* for 'l' */ \
388 REF (form_unknown), /* for 'L', 'q' */ \
389 REF (form_unknown), /* for 'z', 'Z' */ \
390 REF (form_percent), /* for '%' */ \
391 REF (form_integer), /* for 'd', 'i' */ \
392 REF (form_unsigned), /* for 'u' */ \
393 REF (form_octal), /* for 'o' */ \
394 REF (form_hexa), /* for 'X', 'x' */ \
395 REF (form_unknown), /* for 'E', 'e', 'F', 'f', 'G', 'g' */ \
396 REF (form_unknown), /* for 'c' */ \
397 REF (form_unknown), /* for 's', 'S' */ \
398 REF (form_unknown), /* for 'p' */ \
399 REF (form_number), /* for 'n' */ \
400 REF (form_unknown), /* for 'm' */ \
401 REF (form_unknown), /* for 'C' */ \
402 REF (form_unknown), /* for 'A', 'a' */ \
403 REF (form_unknown), /* for 't' */ \
404 REF (form_unknown), /* for 'j' */ \
405 REF (form_unknown) /* for 'I' */ \
406 }; \
407 /* Step 3b: after processing first 'l' modifier. */ \
408 static JUMP_TABLE_TYPE step3b_jumps[30] = \
409 { \
410 REF (form_unknown), \
411 REF (form_unknown), /* for ' ' */ \
412 REF (form_unknown), /* for '+' */ \
413 REF (form_unknown), /* for '-' */ \
414 REF (form_unknown), /* for '<hash>' */ \
415 REF (form_unknown), /* for '0' */ \
416 REF (form_unknown), /* for '\'' */ \
417 REF (form_unknown), /* for '*' */ \
418 REF (form_unknown), /* for '1'...'9' */ \
419 REF (form_unknown), /* for '.' */ \
420 REF (form_unknown), /* for 'h' */ \
421 REF (mod_longlong), /* for 'l' */ \
422 REF (form_unknown), /* for 'L', 'q' */ \
423 REF (form_unknown), /* for 'z', 'Z' */ \
424 REF (form_percent), /* for '%' */ \
425 REF (form_integer), /* for 'd', 'i' */ \
426 REF (form_unsigned), /* for 'u' */ \
427 REF (form_octal), /* for 'o' */ \
428 REF (form_hexa), /* for 'X', 'x' */ \
429 REF (form_float), /* for 'E', 'e', 'F', 'f', 'G', 'g' */ \
430 REF (form_character), /* for 'c' */ \
431 REF (form_string), /* for 's', 'S' */ \
432 REF (form_pointer), /* for 'p' */ \
433 REF (form_number), /* for 'n' */ \
434 REF (form_strerror), /* for 'm' */ \
435 REF (form_wcharacter), /* for 'C' */ \
436 REF (form_floathex), /* for 'A', 'a' */ \
437 REF (form_unknown), /* for 't' */ \
438 REF (form_unknown), /* for 'j' */ \
439 REF (form_unknown) /* for 'I' */ \
440 }
441
442 #define STEP4_TABLE \
443 /* Step 4: processing format specifier. */ \
444 static JUMP_TABLE_TYPE step4_jumps[30] = \
445 { \
446 REF (form_unknown), \
447 REF (form_unknown), /* for ' ' */ \
448 REF (form_unknown), /* for '+' */ \
449 REF (form_unknown), /* for '-' */ \
450 REF (form_unknown), /* for '<hash>' */ \
451 REF (form_unknown), /* for '0' */ \
452 REF (form_unknown), /* for '\'' */ \
453 REF (form_unknown), /* for '*' */ \
454 REF (form_unknown), /* for '1'...'9' */ \
455 REF (form_unknown), /* for '.' */ \
456 REF (form_unknown), /* for 'h' */ \
457 REF (form_unknown), /* for 'l' */ \
458 REF (form_unknown), /* for 'L', 'q' */ \
459 REF (form_unknown), /* for 'z', 'Z' */ \
460 REF (form_percent), /* for '%' */ \
461 REF (form_integer), /* for 'd', 'i' */ \
462 REF (form_unsigned), /* for 'u' */ \
463 REF (form_octal), /* for 'o' */ \
464 REF (form_hexa), /* for 'X', 'x' */ \
465 REF (form_float), /* for 'E', 'e', 'F', 'f', 'G', 'g' */ \
466 REF (form_character), /* for 'c' */ \
467 REF (form_string), /* for 's', 'S' */ \
468 REF (form_pointer), /* for 'p' */ \
469 REF (form_number), /* for 'n' */ \
470 REF (form_strerror), /* for 'm' */ \
471 REF (form_wcharacter), /* for 'C' */ \
472 REF (form_floathex), /* for 'A', 'a' */ \
473 REF (form_unknown), /* for 't' */ \
474 REF (form_unknown), /* for 'j' */ \
475 REF (form_unknown) /* for 'I' */ \
476 }
477
478
479 #define process_arg(fspec) \
480 /* Start real work. We know about all flags and modifiers and \
481 now process the wanted format specifier. */ \
482 LABEL (form_percent): \
483 /* Write a literal "%". */ \
484 outchar (L_('%')); \
485 break; \
486 \
487 LABEL (form_integer): \
488 /* Signed decimal integer. */ \
489 base = 10; \
490 \
491 if (is_longlong) \
492 { \
493 long long int signed_number; \
494 \
495 if (fspec == NULL) \
496 signed_number = va_arg (ap, long long int); \
497 else \
498 signed_number = args_value[fspec->data_arg].pa_long_long_int; \
499 \
500 is_negative = signed_number < 0; \
501 number.longlong = is_negative ? (- signed_number) : signed_number; \
502 \
503 goto LABEL (longlong_number); \
504 } \
505 else \
506 { \
507 long int signed_number; \
508 \
509 if (fspec == NULL) \
510 { \
511 if (is_long_num) \
512 signed_number = va_arg (ap, long int); \
513 else if (is_char) \
514 signed_number = (signed char) va_arg (ap, unsigned int); \
515 else if (!is_short) \
516 signed_number = va_arg (ap, int); \
517 else \
518 signed_number = (short int) va_arg (ap, unsigned int); \
519 } \
520 else \
521 if (is_long_num) \
522 signed_number = args_value[fspec->data_arg].pa_long_int; \
523 else if (is_char) \
524 signed_number = (signed char) \
525 args_value[fspec->data_arg].pa_u_int; \
526 else if (!is_short) \
527 signed_number = args_value[fspec->data_arg].pa_int; \
528 else \
529 signed_number = (short int) \
530 args_value[fspec->data_arg].pa_u_int; \
531 \
532 is_negative = signed_number < 0; \
533 number.word = is_negative ? (- signed_number) : signed_number; \
534 \
535 goto LABEL (number); \
536 } \
537 /* NOTREACHED */ \
538 \
539 LABEL (form_unsigned): \
540 /* Unsigned decimal integer. */ \
541 base = 10; \
542 goto LABEL (unsigned_number); \
543 /* NOTREACHED */ \
544 \
545 LABEL (form_octal): \
546 /* Unsigned octal integer. */ \
547 base = 8; \
548 goto LABEL (unsigned_number); \
549 /* NOTREACHED */ \
550 \
551 LABEL (form_hexa): \
552 /* Unsigned hexadecimal integer. */ \
553 base = 16; \
554 \
555 LABEL (unsigned_number): /* Unsigned number of base BASE. */ \
556 \
557 /* ISO specifies the `+' and ` ' flags only for signed \
558 conversions. */ \
559 is_negative = 0; \
560 showsign = 0; \
561 space = 0; \
562 \
563 if (is_longlong) \
564 { \
565 if (fspec == NULL) \
566 number.longlong = va_arg (ap, unsigned long long int); \
567 else \
568 number.longlong = args_value[fspec->data_arg].pa_u_long_long_int; \
569 \
570 LABEL (longlong_number): \
571 if (prec < 0) \
572 /* Supply a default precision if none was given. */ \
573 prec = 1; \
574 else \
575 /* We have to take care for the '0' flag. If a precision \
576 is given it must be ignored. */ \
577 pad = L_(' '); \
578 \
579 /* If the precision is 0 and the number is 0 nothing has to \
580 be written for the number, except for the 'o' format in \
581 alternate form. */ \
582 if (prec == 0 && number.longlong == 0) \
583 { \
584 string = workend; \
585 if (base == 8 && alt) \
586 *--string = L_('0'); \
587 } \
588 else \
589 { \
590 /* Put the number in WORK. */ \
591 string = _itoa (number.longlong, workend, base, \
592 spec == L_('X')); \
593 if (group && grouping) \
594 string = group_number (string, workend, grouping, \
595 thousands_sep); \
596 \
597 if (use_outdigits && base == 10) \
598 string = _i18n_number_rewrite (string, workend, workend); \
599 } \
600 /* Simplify further test for num != 0. */ \
601 number.word = number.longlong != 0; \
602 } \
603 else \
604 { \
605 if (fspec == NULL) \
606 { \
607 if (is_long_num) \
608 number.word = va_arg (ap, unsigned long int); \
609 else if (is_char) \
610 number.word = (unsigned char) va_arg (ap, unsigned int); \
611 else if (!is_short) \
612 number.word = va_arg (ap, unsigned int); \
613 else \
614 number.word = (unsigned short int) va_arg (ap, unsigned int); \
615 } \
616 else \
617 if (is_long_num) \
618 number.word = args_value[fspec->data_arg].pa_u_long_int; \
619 else if (is_char) \
620 number.word = (unsigned char) \
621 args_value[fspec->data_arg].pa_u_int; \
622 else if (!is_short) \
623 number.word = args_value[fspec->data_arg].pa_u_int; \
624 else \
625 number.word = (unsigned short int) \
626 args_value[fspec->data_arg].pa_u_int; \
627 \
628 LABEL (number): \
629 if (prec < 0) \
630 /* Supply a default precision if none was given. */ \
631 prec = 1; \
632 else \
633 /* We have to take care for the '0' flag. If a precision \
634 is given it must be ignored. */ \
635 pad = L_(' '); \
636 \
637 /* If the precision is 0 and the number is 0 nothing has to \
638 be written for the number, except for the 'o' format in \
639 alternate form. */ \
640 if (prec == 0 && number.word == 0) \
641 { \
642 string = workend; \
643 if (base == 8 && alt) \
644 *--string = L_('0'); \
645 } \
646 else \
647 { \
648 /* Put the number in WORK. */ \
649 string = _itoa_word (number.word, workend, base, \
650 spec == L_('X')); \
651 if (group && grouping) \
652 string = group_number (string, workend, grouping, \
653 thousands_sep); \
654 \
655 if (use_outdigits && base == 10) \
656 string = _i18n_number_rewrite (string, workend, workend); \
657 } \
658 } \
659 \
660 if (prec <= workend - string && number.word != 0 && alt && base == 8) \
661 /* Add octal marker. */ \
662 *--string = L_('0'); \
663 \
664 prec = MAX (0, prec - (workend - string)); \
665 \
666 if (!left) \
667 { \
668 width -= workend - string + prec; \
669 \
670 if (number.word != 0 && alt && base == 16) \
671 /* Account for 0X hex marker. */ \
672 width -= 2; \
673 \
674 if (is_negative || showsign || space) \
675 --width; \
676 \
677 if (pad == L_(' ')) \
678 { \
679 PAD (L_(' ')); \
680 width = 0; \
681 } \
682 \
683 if (is_negative) \
684 outchar (L_('-')); \
685 else if (showsign) \
686 outchar (L_('+')); \
687 else if (space) \
688 outchar (L_(' ')); \
689 \
690 if (number.word != 0 && alt && base == 16) \
691 { \
692 outchar (L_('0')); \
693 outchar (spec); \
694 } \
695 \
696 width += prec; \
697 PAD (L_('0')); \
698 \
699 outstring (string, workend - string); \
700 \
701 break; \
702 } \
703 else \
704 { \
705 if (is_negative) \
706 { \
707 outchar (L_('-')); \
708 --width; \
709 } \
710 else if (showsign) \
711 { \
712 outchar (L_('+')); \
713 --width; \
714 } \
715 else if (space) \
716 { \
717 outchar (L_(' ')); \
718 --width; \
719 } \
720 \
721 if (number.word != 0 && alt && base == 16) \
722 { \
723 outchar (L_('0')); \
724 outchar (spec); \
725 width -= 2; \
726 } \
727 \
728 width -= workend - string + prec; \
729 \
730 if (prec > 0) \
731 { \
732 int temp = width; \
733 width = prec; \
734 PAD (L_('0')); \
735 width = temp; \
736 } \
737 \
738 outstring (string, workend - string); \
739 \
740 PAD (L_(' ')); \
741 break; \
742 } \
743 \
744 LABEL (form_float): \
745 { \
746 /* Floating-point number. This is handled by printf_fp.c. */ \
747 const void *ptr; \
748 int function_done; \
749 \
750 if (fspec == NULL) \
751 { \
752 if (__ldbl_is_dbl) \
753 is_long_double = 0; \
754 \
755 struct printf_info info = { .prec = prec, \
756 .width = width, \
757 .spec = spec, \
758 .is_long_double = is_long_double, \
759 .is_short = is_short, \
760 .is_long = is_long, \
761 .alt = alt, \
762 .space = space, \
763 .left = left, \
764 .showsign = showsign, \
765 .group = group, \
766 .pad = pad, \
767 .extra = 0, \
768 .i18n = use_outdigits, \
769 .wide = sizeof (CHAR_T) != 1 }; \
770 \
771 if (is_long_double) \
772 the_arg.pa_long_double = va_arg (ap, long double); \
773 else \
774 the_arg.pa_double = va_arg (ap, double); \
775 ptr = (const void *) &the_arg; \
776 \
777 function_done = __printf_fp (s, &info, &ptr); \
778 } \
779 else \
780 { \
781 ptr = (const void *) &args_value[fspec->data_arg]; \
782 if (__ldbl_is_dbl) \
783 { \
784 fspec->data_arg_type = PA_DOUBLE; \
785 fspec->info.is_long_double = 0; \
786 } \
787 \
788 function_done = __printf_fp (s, &fspec->info, &ptr); \
789 } \
790 \
791 if (function_done < 0) \
792 { \
793 /* Error in print handler; up to handler to set errno. */ \
794 done = -1; \
795 goto all_done; \
796 } \
797 \
798 done_add (function_done); \
799 } \
800 break; \
801 \
802 LABEL (form_floathex): \
803 { \
804 /* Floating point number printed as hexadecimal number. */ \
805 const void *ptr; \
806 int function_done; \
807 \
808 if (fspec == NULL) \
809 { \
810 if (__ldbl_is_dbl) \
811 is_long_double = 0; \
812 \
813 struct printf_info info = { .prec = prec, \
814 .width = width, \
815 .spec = spec, \
816 .is_long_double = is_long_double, \
817 .is_short = is_short, \
818 .is_long = is_long, \
819 .alt = alt, \
820 .space = space, \
821 .left = left, \
822 .showsign = showsign, \
823 .group = group, \
824 .pad = pad, \
825 .extra = 0, \
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_fphex (s, &info, &ptr); \
835 } \
836 else \
837 { \
838 ptr = (const void *) &args_value[fspec->data_arg]; \
839 if (__ldbl_is_dbl) \
840 fspec->info.is_long_double = 0; \
841 \
842 function_done = __printf_fphex (s, &fspec->info, &ptr); \
843 } \
844 \
845 if (function_done < 0) \
846 { \
847 /* Error in print handler; up to handler to set errno. */ \
848 done = -1; \
849 goto all_done; \
850 } \
851 \
852 done_add (function_done); \
853 } \
854 break; \
855 \
856 LABEL (form_pointer): \
857 /* Generic pointer. */ \
858 { \
859 const void *ptr; \
860 if (fspec == NULL) \
861 ptr = va_arg (ap, void *); \
862 else \
863 ptr = args_value[fspec->data_arg].pa_pointer; \
864 if (ptr != NULL) \
865 { \
866 /* If the pointer is not NULL, write it as a %#x spec. */ \
867 base = 16; \
868 number.word = (unsigned long int) ptr; \
869 is_negative = 0; \
870 alt = 1; \
871 group = 0; \
872 spec = L_('x'); \
873 goto LABEL (number); \
874 } \
875 else \
876 { \
877 /* Write "(nil)" for a nil pointer. */ \
878 string = (CHAR_T *) L_("(nil)"); \
879 /* Make sure the full string "(nil)" is printed. */ \
880 if (prec < 5) \
881 prec = 5; \
882 /* This is a wide string iff compiling wprintf. */ \
883 is_long = sizeof (CHAR_T) > 1; \
884 goto LABEL (print_string); \
885 } \
886 } \
887 /* NOTREACHED */ \
888 \
889 LABEL (form_number): \
890 if (s->_flags2 & _IO_FLAGS2_FORTIFY) \
891 { \
892 if (! readonly_format) \
893 { \
894 extern int __readonly_area (const void *, size_t) \
895 attribute_hidden; \
896 readonly_format \
897 = __readonly_area (format, ((STR_LEN (format) + 1) \
898 * sizeof (CHAR_T))); \
899 } \
900 if (readonly_format < 0) \
901 __libc_fatal ("*** %n in writable segment detected ***\n"); \
902 } \
903 /* Answer the count of characters written. */ \
904 if (fspec == NULL) \
905 { \
906 if (is_longlong) \
907 *(long long int *) va_arg (ap, void *) = done; \
908 else if (is_long_num) \
909 *(long int *) va_arg (ap, void *) = done; \
910 else if (is_char) \
911 *(char *) va_arg (ap, void *) = done; \
912 else if (!is_short) \
913 *(int *) va_arg (ap, void *) = done; \
914 else \
915 *(short int *) va_arg (ap, void *) = done; \
916 } \
917 else \
918 if (is_longlong) \
919 *(long long int *) args_value[fspec->data_arg].pa_pointer = done; \
920 else if (is_long_num) \
921 *(long int *) args_value[fspec->data_arg].pa_pointer = done; \
922 else if (is_char) \
923 *(char *) args_value[fspec->data_arg].pa_pointer = done; \
924 else if (!is_short) \
925 *(int *) args_value[fspec->data_arg].pa_pointer = done; \
926 else \
927 *(short int *) args_value[fspec->data_arg].pa_pointer = done; \
928 break; \
929 \
930 LABEL (form_strerror): \
931 /* Print description of error ERRNO. */ \
932 string = \
933 (CHAR_T *) __strerror_r (save_errno, (char *) work_buffer, \
934 WORK_BUFFER_SIZE * sizeof (CHAR_T)); \
935 is_long = 0; /* This is no wide-char string. */ \
936 goto LABEL (print_string)
937
938 #ifdef COMPILE_WPRINTF
939 # define process_string_arg(fspec) \
940 LABEL (form_character): \
941 /* Character. */ \
942 if (is_long) \
943 goto LABEL (form_wcharacter); \
944 --width; /* Account for the character itself. */ \
945 if (!left) \
946 PAD (L' '); \
947 if (fspec == NULL) \
948 outchar (__btowc ((unsigned char) va_arg (ap, int))); /* Promoted. */ \
949 else \
950 outchar (__btowc ((unsigned char) \
951 args_value[fspec->data_arg].pa_int)); \
952 if (left) \
953 PAD (L' '); \
954 break; \
955 \
956 LABEL (form_wcharacter): \
957 { \
958 /* Wide character. */ \
959 --width; \
960 if (!left) \
961 PAD (L' '); \
962 if (fspec == NULL) \
963 outchar (va_arg (ap, wchar_t)); \
964 else \
965 outchar (args_value[fspec->data_arg].pa_wchar); \
966 if (left) \
967 PAD (L' '); \
968 } \
969 break; \
970 \
971 LABEL (form_string): \
972 { \
973 size_t len; \
974 int string_malloced; \
975 \
976 /* The string argument could in fact be `char *' or `wchar_t *'. \
977 But this should not make a difference here. */ \
978 if (fspec == NULL) \
979 string = (CHAR_T *) va_arg (ap, const wchar_t *); \
980 else \
981 string = (CHAR_T *) args_value[fspec->data_arg].pa_wstring; \
982 \
983 /* Entry point for printing other strings. */ \
984 LABEL (print_string): \
985 \
986 string_malloced = 0; \
987 if (string == NULL) \
988 { \
989 /* Write "(null)" if there's space. */ \
990 if (prec == -1 \
991 || prec >= (int) (sizeof (null) / sizeof (null[0])) - 1) \
992 { \
993 string = (CHAR_T *) null; \
994 len = (sizeof (null) / sizeof (null[0])) - 1; \
995 } \
996 else \
997 { \
998 string = (CHAR_T *) L""; \
999 len = 0; \
1000 } \
1001 } \
1002 else if (!is_long && spec != L_('S')) \
1003 { \
1004 /* This is complicated. We have to transform the multibyte \
1005 string into a wide character string. */ \
1006 const char *mbs = (const char *) string; \
1007 mbstate_t mbstate; \
1008 \
1009 len = prec != -1 ? __strnlen (mbs, (size_t) prec) : strlen (mbs); \
1010 \
1011 /* Allocate dynamically an array which definitely is long \
1012 enough for the wide character version. Each byte in the \
1013 multi-byte string can produce at most one wide character. */ \
1014 if (__glibc_unlikely (len > SIZE_MAX / sizeof (wchar_t))) \
1015 { \
1016 __set_errno (EOVERFLOW); \
1017 done = -1; \
1018 goto all_done; \
1019 } \
1020 else if (__libc_use_alloca (len * sizeof (wchar_t))) \
1021 string = (CHAR_T *) alloca (len * sizeof (wchar_t)); \
1022 else if ((string = (CHAR_T *) malloc (len * sizeof (wchar_t))) \
1023 == NULL) \
1024 { \
1025 done = -1; \
1026 goto all_done; \
1027 } \
1028 else \
1029 string_malloced = 1; \
1030 \
1031 memset (&mbstate, '\0', sizeof (mbstate_t)); \
1032 len = __mbsrtowcs (string, &mbs, len, &mbstate); \
1033 if (len == (size_t) -1) \
1034 { \
1035 /* Illegal multibyte character. */ \
1036 done = -1; \
1037 goto all_done; \
1038 } \
1039 } \
1040 else \
1041 { \
1042 if (prec != -1) \
1043 /* Search for the end of the string, but don't search past \
1044 the length specified by the precision. */ \
1045 len = __wcsnlen (string, prec); \
1046 else \
1047 len = __wcslen (string); \
1048 } \
1049 \
1050 if ((width -= len) < 0) \
1051 { \
1052 outstring (string, len); \
1053 break; \
1054 } \
1055 \
1056 if (!left) \
1057 PAD (L' '); \
1058 outstring (string, len); \
1059 if (left) \
1060 PAD (L' '); \
1061 if (__glibc_unlikely (string_malloced)) \
1062 free (string); \
1063 } \
1064 break;
1065 #else
1066 # define process_string_arg(fspec) \
1067 LABEL (form_character): \
1068 /* Character. */ \
1069 if (is_long) \
1070 goto LABEL (form_wcharacter); \
1071 --width; /* Account for the character itself. */ \
1072 if (!left) \
1073 PAD (' '); \
1074 if (fspec == NULL) \
1075 outchar ((unsigned char) va_arg (ap, int)); /* Promoted. */ \
1076 else \
1077 outchar ((unsigned char) args_value[fspec->data_arg].pa_int); \
1078 if (left) \
1079 PAD (' '); \
1080 break; \
1081 \
1082 LABEL (form_wcharacter): \
1083 { \
1084 /* Wide character. */ \
1085 char buf[MB_LEN_MAX]; \
1086 mbstate_t mbstate; \
1087 size_t len; \
1088 \
1089 memset (&mbstate, '\0', sizeof (mbstate_t)); \
1090 len = __wcrtomb (buf, (fspec == NULL ? va_arg (ap, wchar_t) \
1091 : args_value[fspec->data_arg].pa_wchar), \
1092 &mbstate); \
1093 if (len == (size_t) -1) \
1094 { \
1095 /* Something went wrong during the conversion. Bail out. */ \
1096 done = -1; \
1097 goto all_done; \
1098 } \
1099 width -= len; \
1100 if (!left) \
1101 PAD (' '); \
1102 outstring (buf, len); \
1103 if (left) \
1104 PAD (' '); \
1105 } \
1106 break; \
1107 \
1108 LABEL (form_string): \
1109 { \
1110 size_t len; \
1111 int string_malloced; \
1112 \
1113 /* The string argument could in fact be `char *' or `wchar_t *'. \
1114 But this should not make a difference here. */ \
1115 if (fspec == NULL) \
1116 string = (char *) va_arg (ap, const char *); \
1117 else \
1118 string = (char *) args_value[fspec->data_arg].pa_string; \
1119 \
1120 /* Entry point for printing other strings. */ \
1121 LABEL (print_string): \
1122 \
1123 string_malloced = 0; \
1124 if (string == NULL) \
1125 { \
1126 /* Write "(null)" if there's space. */ \
1127 if (prec == -1 || prec >= (int) sizeof (null) - 1) \
1128 { \
1129 string = (char *) null; \
1130 len = sizeof (null) - 1; \
1131 } \
1132 else \
1133 { \
1134 string = (char *) ""; \
1135 len = 0; \
1136 } \
1137 } \
1138 else if (!is_long && spec != L_('S')) \
1139 { \
1140 if (prec != -1) \
1141 /* Search for the end of the string, but don't search past \
1142 the length (in bytes) specified by the precision. */ \
1143 len = __strnlen (string, prec); \
1144 else \
1145 len = strlen (string); \
1146 } \
1147 else \
1148 { \
1149 const wchar_t *s2 = (const wchar_t *) string; \
1150 mbstate_t mbstate; \
1151 \
1152 memset (&mbstate, '\0', sizeof (mbstate_t)); \
1153 \
1154 if (prec >= 0) \
1155 { \
1156 /* The string `s2' might not be NUL terminated. */ \
1157 if (__libc_use_alloca (prec)) \
1158 string = (char *) alloca (prec); \
1159 else if ((string = (char *) malloc (prec)) == NULL) \
1160 { \
1161 done = -1; \
1162 goto all_done; \
1163 } \
1164 else \
1165 string_malloced = 1; \
1166 len = __wcsrtombs (string, &s2, prec, &mbstate); \
1167 } \
1168 else \
1169 { \
1170 len = __wcsrtombs (NULL, &s2, 0, &mbstate); \
1171 if (len != (size_t) -1) \
1172 { \
1173 assert (__mbsinit (&mbstate)); \
1174 s2 = (const wchar_t *) string; \
1175 if (__libc_use_alloca (len + 1)) \
1176 string = (char *) alloca (len + 1); \
1177 else if ((string = (char *) malloc (len + 1)) == NULL) \
1178 { \
1179 done = -1; \
1180 goto all_done; \
1181 } \
1182 else \
1183 string_malloced = 1; \
1184 (void) __wcsrtombs (string, &s2, len + 1, &mbstate); \
1185 } \
1186 } \
1187 \
1188 if (len == (size_t) -1) \
1189 { \
1190 /* Illegal wide-character string. */ \
1191 done = -1; \
1192 goto all_done; \
1193 } \
1194 } \
1195 \
1196 if ((width -= len) < 0) \
1197 { \
1198 outstring (string, len); \
1199 break; \
1200 } \
1201 \
1202 if (!left) \
1203 PAD (' '); \
1204 outstring (string, len); \
1205 if (left) \
1206 PAD (' '); \
1207 if (__glibc_unlikely (string_malloced)) \
1208 free (string); \
1209 } \
1210 break;
1211 #endif
1212
1213 /* Helper function to provide temporary buffering for unbuffered streams. */
1214 static int buffered_vfprintf (FILE *stream, const CHAR_T *fmt, va_list)
1215 __THROW __attribute__ ((noinline)) internal_function;
1216
1217 /* Handle positional format specifiers. */
1218 static int printf_positional (_IO_FILE *s,
1219 const CHAR_T *format, int readonly_format,
1220 va_list ap, va_list *ap_savep, int done,
1221 int nspecs_done, const UCHAR_T *lead_str_end,
1222 CHAR_T *work_buffer, int save_errno,
1223 const char *grouping, THOUSANDS_SEP_T);
1224
1225 /* Handle unknown format specifier. */
1226 static int printf_unknown (FILE *, const struct printf_info *,
1227 const void *const *) __THROW;
1228
1229 /* Group digits of number string. */
1230 static CHAR_T *group_number (CHAR_T *, CHAR_T *, const char *, THOUSANDS_SEP_T)
1231 __THROW internal_function;
1232
1233 /* The function itself. */
1234 int
1235 vfprintf (FILE *s, const CHAR_T *format, va_list ap)
1236 {
1237 /* The character used as thousands separator. */
1238 THOUSANDS_SEP_T thousands_sep = 0;
1239
1240 /* The string describing the size of groups of digits. */
1241 const char *grouping;
1242
1243 /* Place to accumulate the result. */
1244 int done;
1245
1246 /* Current character in format string. */
1247 const UCHAR_T *f;
1248
1249 /* End of leading constant string. */
1250 const UCHAR_T *lead_str_end;
1251
1252 /* Points to next format specifier. */
1253 const UCHAR_T *end_of_spec;
1254
1255 /* Buffer intermediate results. */
1256 CHAR_T work_buffer[WORK_BUFFER_SIZE];
1257 CHAR_T *workstart = NULL;
1258 CHAR_T *workend;
1259
1260 /* We have to save the original argument pointer. */
1261 va_list ap_save;
1262
1263 /* Count number of specifiers we already processed. */
1264 int nspecs_done;
1265
1266 /* For the %m format we may need the current `errno' value. */
1267 int save_errno = errno;
1268
1269 /* 1 if format is in read-only memory, -1 if it is in writable memory,
1270 0 if unknown. */
1271 int readonly_format = 0;
1272
1273 /* Orient the stream. */
1274 #ifdef ORIENT
1275 ORIENT;
1276 #endif
1277
1278 /* Sanity check of arguments. */
1279 ARGCHECK (s, format);
1280
1281 #ifdef ORIENT
1282 /* Check for correct orientation. */
1283 if (_IO_vtable_offset (s) == 0 &&
1284 _IO_fwide (s, sizeof (CHAR_T) == 1 ? -1 : 1)
1285 != (sizeof (CHAR_T) == 1 ? -1 : 1))
1286 /* The stream is already oriented otherwise. */
1287 return EOF;
1288 #endif
1289
1290 if (UNBUFFERED_P (s))
1291 /* Use a helper function which will allocate a local temporary buffer
1292 for the stream and then call us again. */
1293 return buffered_vfprintf (s, format, ap);
1294
1295 /* Initialize local variables. */
1296 done = 0;
1297 grouping = (const char *) -1;
1298 #ifdef __va_copy
1299 /* This macro will be available soon in gcc's <stdarg.h>. We need it
1300 since on some systems `va_list' is not an integral type. */
1301 __va_copy (ap_save, ap);
1302 #else
1303 ap_save = ap;
1304 #endif
1305 nspecs_done = 0;
1306
1307 #ifdef COMPILE_WPRINTF
1308 /* Find the first format specifier. */
1309 f = lead_str_end = __find_specwc ((const UCHAR_T *) format);
1310 #else
1311 /* Find the first format specifier. */
1312 f = lead_str_end = __find_specmb ((const UCHAR_T *) format);
1313 #endif
1314
1315 /* Lock stream. */
1316 _IO_cleanup_region_start ((void (*) (void *)) &_IO_funlockfile, s);
1317 _IO_flockfile (s);
1318
1319 /* Write the literal text before the first format. */
1320 outstring ((const UCHAR_T *) format,
1321 lead_str_end - (const UCHAR_T *) format);
1322
1323 /* If we only have to print a simple string, return now. */
1324 if (*f == L_('\0'))
1325 goto all_done;
1326
1327 /* Use the slow path in case any printf handler is registered. */
1328 if (__glibc_unlikely (__printf_function_table != NULL
1329 || __printf_modifier_table != NULL
1330 || __printf_va_arg_table != NULL))
1331 goto do_positional;
1332
1333 /* Process whole format string. */
1334 do
1335 {
1336 STEP0_3_TABLE;
1337 STEP4_TABLE;
1338
1339 union printf_arg *args_value; /* This is not used here but ... */
1340 int is_negative; /* Flag for negative number. */
1341 union
1342 {
1343 unsigned long long int longlong;
1344 unsigned long int word;
1345 } number;
1346 int base;
1347 union printf_arg the_arg;
1348 CHAR_T *string; /* Pointer to argument string. */
1349 int alt = 0; /* Alternate format. */
1350 int space = 0; /* Use space prefix if no sign is needed. */
1351 int left = 0; /* Left-justify output. */
1352 int showsign = 0; /* Always begin with plus or minus sign. */
1353 int group = 0; /* Print numbers according grouping rules. */
1354 int is_long_double = 0; /* Argument is long double/ long long int. */
1355 int is_short = 0; /* Argument is short int. */
1356 int is_long = 0; /* Argument is long int. */
1357 int is_char = 0; /* Argument is promoted (unsigned) char. */
1358 int width = 0; /* Width of output; 0 means none specified. */
1359 int prec = -1; /* Precision of output; -1 means none specified. */
1360 /* This flag is set by the 'I' modifier and selects the use of the
1361 `outdigits' as determined by the current locale. */
1362 int use_outdigits = 0;
1363 UCHAR_T pad = L_(' ');/* Padding character. */
1364 CHAR_T spec;
1365
1366 workstart = NULL;
1367 workend = work_buffer + WORK_BUFFER_SIZE;
1368
1369 /* Get current character in format string. */
1370 JUMP (*++f, step0_jumps);
1371
1372 /* ' ' flag. */
1373 LABEL (flag_space):
1374 space = 1;
1375 JUMP (*++f, step0_jumps);
1376
1377 /* '+' flag. */
1378 LABEL (flag_plus):
1379 showsign = 1;
1380 JUMP (*++f, step0_jumps);
1381
1382 /* The '-' flag. */
1383 LABEL (flag_minus):
1384 left = 1;
1385 pad = L_(' ');
1386 JUMP (*++f, step0_jumps);
1387
1388 /* The '#' flag. */
1389 LABEL (flag_hash):
1390 alt = 1;
1391 JUMP (*++f, step0_jumps);
1392
1393 /* The '0' flag. */
1394 LABEL (flag_zero):
1395 if (!left)
1396 pad = L_('0');
1397 JUMP (*++f, step0_jumps);
1398
1399 /* The '\'' flag. */
1400 LABEL (flag_quote):
1401 group = 1;
1402
1403 if (grouping == (const char *) -1)
1404 {
1405 #ifdef COMPILE_WPRINTF
1406 thousands_sep = _NL_CURRENT_WORD (LC_NUMERIC,
1407 _NL_NUMERIC_THOUSANDS_SEP_WC);
1408 #else
1409 thousands_sep = _NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP);
1410 #endif
1411
1412 grouping = _NL_CURRENT (LC_NUMERIC, GROUPING);
1413 if (*grouping == '\0' || *grouping == CHAR_MAX
1414 #ifdef COMPILE_WPRINTF
1415 || thousands_sep == L'\0'
1416 #else
1417 || *thousands_sep == '\0'
1418 #endif
1419 )
1420 grouping = NULL;
1421 }
1422 JUMP (*++f, step0_jumps);
1423
1424 LABEL (flag_i18n):
1425 use_outdigits = 1;
1426 JUMP (*++f, step0_jumps);
1427
1428 /* Get width from argument. */
1429 LABEL (width_asterics):
1430 {
1431 const UCHAR_T *tmp; /* Temporary value. */
1432
1433 tmp = ++f;
1434 if (ISDIGIT (*tmp))
1435 {
1436 int pos = read_int (&tmp);
1437
1438 if (pos == -1)
1439 {
1440 __set_errno (EOVERFLOW);
1441 done = -1;
1442 goto all_done;
1443 }
1444
1445 if (pos && *tmp == L_('$'))
1446 /* The width comes from a positional parameter. */
1447 goto do_positional;
1448 }
1449 width = va_arg (ap, int);
1450
1451 /* Negative width means left justified. */
1452 if (width < 0)
1453 {
1454 width = -width;
1455 pad = L_(' ');
1456 left = 1;
1457 }
1458
1459 if (__glibc_unlikely (width >= INT_MAX / sizeof (CHAR_T) - 32))
1460 {
1461 __set_errno (EOVERFLOW);
1462 done = -1;
1463 goto all_done;
1464 }
1465
1466 if (width >= WORK_BUFFER_SIZE - 32)
1467 {
1468 /* We have to use a special buffer. The "32" is just a safe
1469 bet for all the output which is not counted in the width. */
1470 size_t needed = ((size_t) width + 32) * sizeof (CHAR_T);
1471 if (__libc_use_alloca (needed))
1472 workend = (CHAR_T *) alloca (needed) + width + 32;
1473 else
1474 {
1475 workstart = (CHAR_T *) malloc (needed);
1476 if (workstart == NULL)
1477 {
1478 done = -1;
1479 goto all_done;
1480 }
1481 workend = workstart + width + 32;
1482 }
1483 }
1484 }
1485 JUMP (*f, step1_jumps);
1486
1487 /* Given width in format string. */
1488 LABEL (width):
1489 width = read_int (&f);
1490
1491 if (__glibc_unlikely (width == -1
1492 || width >= INT_MAX / sizeof (CHAR_T) - 32))
1493 {
1494 __set_errno (EOVERFLOW);
1495 done = -1;
1496 goto all_done;
1497 }
1498
1499 if (width >= WORK_BUFFER_SIZE - 32)
1500 {
1501 /* We have to use a special buffer. The "32" is just a safe
1502 bet for all the output which is not counted in the width. */
1503 size_t needed = ((size_t) width + 32) * sizeof (CHAR_T);
1504 if (__libc_use_alloca (needed))
1505 workend = (CHAR_T *) alloca (needed) + width + 32;
1506 else
1507 {
1508 workstart = (CHAR_T *) malloc (needed);
1509 if (workstart == NULL)
1510 {
1511 done = -1;
1512 goto all_done;
1513 }
1514 workend = workstart + width + 32;
1515 }
1516 }
1517 if (*f == L_('$'))
1518 /* Oh, oh. The argument comes from a positional parameter. */
1519 goto do_positional;
1520 JUMP (*f, step1_jumps);
1521
1522 LABEL (precision):
1523 ++f;
1524 if (*f == L_('*'))
1525 {
1526 const UCHAR_T *tmp; /* Temporary value. */
1527
1528 tmp = ++f;
1529 if (ISDIGIT (*tmp))
1530 {
1531 int pos = read_int (&tmp);
1532
1533 if (pos == -1)
1534 {
1535 __set_errno (EOVERFLOW);
1536 done = -1;
1537 goto all_done;
1538 }
1539
1540 if (pos && *tmp == L_('$'))
1541 /* The precision comes from a positional parameter. */
1542 goto do_positional;
1543 }
1544 prec = va_arg (ap, int);
1545
1546 /* If the precision is negative the precision is omitted. */
1547 if (prec < 0)
1548 prec = -1;
1549 }
1550 else if (ISDIGIT (*f))
1551 {
1552 prec = read_int (&f);
1553
1554 /* The precision was specified in this case as an extremely
1555 large positive value. */
1556 if (prec == -1)
1557 {
1558 __set_errno (EOVERFLOW);
1559 done = -1;
1560 goto all_done;
1561 }
1562 }
1563 else
1564 prec = 0;
1565 if (prec > width && prec > WORK_BUFFER_SIZE - 32)
1566 {
1567 /* Deallocate any previously allocated buffer because it is
1568 too small. */
1569 if (__glibc_unlikely (workstart != NULL))
1570 free (workstart);
1571 workstart = NULL;
1572 if (__glibc_unlikely (prec >= INT_MAX / sizeof (CHAR_T) - 32))
1573 {
1574 __set_errno (EOVERFLOW);
1575 done = -1;
1576 goto all_done;
1577 }
1578 size_t needed = ((size_t) prec + 32) * sizeof (CHAR_T);
1579
1580 if (__libc_use_alloca (needed))
1581 workend = (CHAR_T *) alloca (needed) + prec + 32;
1582 else
1583 {
1584 workstart = (CHAR_T *) malloc (needed);
1585 if (workstart == NULL)
1586 {
1587 done = -1;
1588 goto all_done;
1589 }
1590 workend = workstart + prec + 32;
1591 }
1592 }
1593 JUMP (*f, step2_jumps);
1594
1595 /* Process 'h' modifier. There might another 'h' following. */
1596 LABEL (mod_half):
1597 is_short = 1;
1598 JUMP (*++f, step3a_jumps);
1599
1600 /* Process 'hh' modifier. */
1601 LABEL (mod_halfhalf):
1602 is_short = 0;
1603 is_char = 1;
1604 JUMP (*++f, step4_jumps);
1605
1606 /* Process 'l' modifier. There might another 'l' following. */
1607 LABEL (mod_long):
1608 is_long = 1;
1609 JUMP (*++f, step3b_jumps);
1610
1611 /* Process 'L', 'q', or 'll' modifier. No other modifier is
1612 allowed to follow. */
1613 LABEL (mod_longlong):
1614 is_long_double = 1;
1615 is_long = 1;
1616 JUMP (*++f, step4_jumps);
1617
1618 LABEL (mod_size_t):
1619 is_long_double = sizeof (size_t) > sizeof (unsigned long int);
1620 is_long = sizeof (size_t) > sizeof (unsigned int);
1621 JUMP (*++f, step4_jumps);
1622
1623 LABEL (mod_ptrdiff_t):
1624 is_long_double = sizeof (ptrdiff_t) > sizeof (unsigned long int);
1625 is_long = sizeof (ptrdiff_t) > sizeof (unsigned int);
1626 JUMP (*++f, step4_jumps);
1627
1628 LABEL (mod_intmax_t):
1629 is_long_double = sizeof (intmax_t) > sizeof (unsigned long int);
1630 is_long = sizeof (intmax_t) > sizeof (unsigned int);
1631 JUMP (*++f, step4_jumps);
1632
1633 /* Process current format. */
1634 while (1)
1635 {
1636 process_arg (((struct printf_spec *) NULL));
1637 process_string_arg (((struct printf_spec *) NULL));
1638
1639 LABEL (form_unknown):
1640 if (spec == L_('\0'))
1641 {
1642 /* The format string ended before the specifier is complete. */
1643 __set_errno (EINVAL);
1644 done = -1;
1645 goto all_done;
1646 }
1647
1648 /* If we are in the fast loop force entering the complicated
1649 one. */
1650 goto do_positional;
1651 }
1652
1653 /* The format is correctly handled. */
1654 ++nspecs_done;
1655
1656 if (__glibc_unlikely (workstart != NULL))
1657 free (workstart);
1658 workstart = NULL;
1659
1660 /* Look for next format specifier. */
1661 #ifdef COMPILE_WPRINTF
1662 f = __find_specwc ((end_of_spec = ++f));
1663 #else
1664 f = __find_specmb ((end_of_spec = ++f));
1665 #endif
1666
1667 /* Write the following constant string. */
1668 outstring (end_of_spec, f - end_of_spec);
1669 }
1670 while (*f != L_('\0'));
1671
1672 /* Unlock stream and return. */
1673 goto all_done;
1674
1675 /* Hand off processing for positional parameters. */
1676 do_positional:
1677 if (__glibc_unlikely (workstart != NULL))
1678 {
1679 free (workstart);
1680 workstart = NULL;
1681 }
1682 done = printf_positional (s, format, readonly_format, ap, &ap_save,
1683 done, nspecs_done, lead_str_end, work_buffer,
1684 save_errno, grouping, thousands_sep);
1685
1686 all_done:
1687 if (__glibc_unlikely (workstart != NULL))
1688 free (workstart);
1689 /* Unlock the stream. */
1690 _IO_funlockfile (s);
1691 _IO_cleanup_region_end (0);
1692
1693 return done;
1694 }
1695 \f
1696 static int
1697 printf_positional (_IO_FILE *s, const CHAR_T *format, int readonly_format,
1698 va_list ap, va_list *ap_savep, int done, int nspecs_done,
1699 const UCHAR_T *lead_str_end,
1700 CHAR_T *work_buffer, int save_errno,
1701 const char *grouping, THOUSANDS_SEP_T thousands_sep)
1702 {
1703 /* For the argument descriptions, which may be allocated on the heap. */
1704 void *args_malloced = NULL;
1705
1706 /* For positional argument handling. */
1707 struct scratch_buffer specsbuf;
1708 scratch_buffer_init (&specsbuf);
1709 struct printf_spec *specs = specsbuf.data;
1710 size_t specs_limit = specsbuf.length / sizeof (specs[0]);
1711
1712 /* Array with information about the needed arguments. This has to
1713 be dynamically extensible. */
1714 size_t nspecs = 0;
1715
1716 /* The number of arguments the format string requests. This will
1717 determine the size of the array needed to store the argument
1718 attributes. */
1719 size_t nargs = 0;
1720 size_t bytes_per_arg;
1721 union printf_arg *args_value;
1722 int *args_size;
1723 int *args_type;
1724
1725 /* Positional parameters refer to arguments directly. This could
1726 also determine the maximum number of arguments. Track the
1727 maximum number. */
1728 size_t max_ref_arg = 0;
1729
1730 /* Just a counter. */
1731 size_t cnt;
1732
1733 CHAR_T *workstart = NULL;
1734
1735 if (grouping == (const char *) -1)
1736 {
1737 #ifdef COMPILE_WPRINTF
1738 thousands_sep = _NL_CURRENT_WORD (LC_NUMERIC,
1739 _NL_NUMERIC_THOUSANDS_SEP_WC);
1740 #else
1741 thousands_sep = _NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP);
1742 #endif
1743
1744 grouping = _NL_CURRENT (LC_NUMERIC, GROUPING);
1745 if (*grouping == '\0' || *grouping == CHAR_MAX)
1746 grouping = NULL;
1747 }
1748
1749 for (const UCHAR_T *f = lead_str_end; *f != L_('\0');
1750 f = specs[nspecs++].next_fmt)
1751 {
1752 if (nspecs == specs_limit)
1753 {
1754 if (!scratch_buffer_grow_preserve (&specsbuf))
1755 {
1756 done = -1;
1757 goto all_done;
1758 }
1759 specs = specsbuf.data;
1760 specs_limit = specsbuf.length / sizeof (specs[0]);
1761 }
1762
1763 /* Parse the format specifier. */
1764 #ifdef COMPILE_WPRINTF
1765 nargs += __parse_one_specwc (f, nargs, &specs[nspecs], &max_ref_arg);
1766 #else
1767 nargs += __parse_one_specmb (f, nargs, &specs[nspecs], &max_ref_arg);
1768 #endif
1769 }
1770
1771 /* Determine the number of arguments the format string consumes. */
1772 nargs = MAX (nargs, max_ref_arg);
1773 /* Calculate total size needed to represent a single argument across
1774 all three argument-related arrays. */
1775 bytes_per_arg = (sizeof (*args_value) + sizeof (*args_size)
1776 + sizeof (*args_type));
1777
1778 /* Check for potential integer overflow. */
1779 if (__glibc_unlikely (nargs > INT_MAX / bytes_per_arg))
1780 {
1781 __set_errno (EOVERFLOW);
1782 done = -1;
1783 goto all_done;
1784 }
1785
1786 /* Allocate memory for all three argument arrays. */
1787 if (__libc_use_alloca (nargs * bytes_per_arg))
1788 args_value = alloca (nargs * bytes_per_arg);
1789 else
1790 {
1791 args_value = args_malloced = malloc (nargs * bytes_per_arg);
1792 if (args_value == NULL)
1793 {
1794 done = -1;
1795 goto all_done;
1796 }
1797 }
1798
1799 /* Set up the remaining two arrays to each point past the end of the
1800 prior array, since space for all three has been allocated now. */
1801 args_size = &args_value[nargs].pa_int;
1802 args_type = &args_size[nargs];
1803 memset (args_type, s->_flags2 & _IO_FLAGS2_FORTIFY ? '\xff' : '\0',
1804 nargs * sizeof (*args_type));
1805
1806 /* XXX Could do sanity check here: If any element in ARGS_TYPE is
1807 still zero after this loop, format is invalid. For now we
1808 simply use 0 as the value. */
1809
1810 /* Fill in the types of all the arguments. */
1811 for (cnt = 0; cnt < nspecs; ++cnt)
1812 {
1813 /* If the width is determined by an argument this is an int. */
1814 if (specs[cnt].width_arg != -1)
1815 args_type[specs[cnt].width_arg] = PA_INT;
1816
1817 /* If the precision is determined by an argument this is an int. */
1818 if (specs[cnt].prec_arg != -1)
1819 args_type[specs[cnt].prec_arg] = PA_INT;
1820
1821 switch (specs[cnt].ndata_args)
1822 {
1823 case 0: /* No arguments. */
1824 break;
1825 case 1: /* One argument; we already have the
1826 type and size. */
1827 args_type[specs[cnt].data_arg] = specs[cnt].data_arg_type;
1828 args_size[specs[cnt].data_arg] = specs[cnt].size;
1829 break;
1830 default:
1831 /* We have more than one argument for this format spec.
1832 We must call the arginfo function again to determine
1833 all the types. */
1834 (void) (*__printf_arginfo_table[specs[cnt].info.spec])
1835 (&specs[cnt].info,
1836 specs[cnt].ndata_args, &args_type[specs[cnt].data_arg],
1837 &args_size[specs[cnt].data_arg]);
1838 break;
1839 }
1840 }
1841
1842 /* Now we know all the types and the order. Fill in the argument
1843 values. */
1844 for (cnt = 0; cnt < nargs; ++cnt)
1845 switch (args_type[cnt])
1846 {
1847 #define T(tag, mem, type) \
1848 case tag: \
1849 args_value[cnt].mem = va_arg (*ap_savep, type); \
1850 break
1851
1852 T (PA_WCHAR, pa_wchar, wint_t);
1853 case PA_CHAR: /* Promoted. */
1854 case PA_INT|PA_FLAG_SHORT: /* Promoted. */
1855 #if LONG_MAX == INT_MAX
1856 case PA_INT|PA_FLAG_LONG:
1857 #endif
1858 T (PA_INT, pa_int, int);
1859 #if LONG_MAX == LONG_LONG_MAX
1860 case PA_INT|PA_FLAG_LONG:
1861 #endif
1862 T (PA_INT|PA_FLAG_LONG_LONG, pa_long_long_int, long long int);
1863 #if LONG_MAX != INT_MAX && LONG_MAX != LONG_LONG_MAX
1864 # error "he?"
1865 #endif
1866 case PA_FLOAT: /* Promoted. */
1867 T (PA_DOUBLE, pa_double, double);
1868 case PA_DOUBLE|PA_FLAG_LONG_DOUBLE:
1869 if (__ldbl_is_dbl)
1870 {
1871 args_value[cnt].pa_double = va_arg (*ap_savep, double);
1872 args_type[cnt] &= ~PA_FLAG_LONG_DOUBLE;
1873 }
1874 else
1875 args_value[cnt].pa_long_double = va_arg (*ap_savep, long double);
1876 break;
1877 case PA_STRING: /* All pointers are the same */
1878 case PA_WSTRING: /* All pointers are the same */
1879 T (PA_POINTER, pa_pointer, void *);
1880 #undef T
1881 default:
1882 if ((args_type[cnt] & PA_FLAG_PTR) != 0)
1883 args_value[cnt].pa_pointer = va_arg (*ap_savep, void *);
1884 else if (__glibc_unlikely (__printf_va_arg_table != NULL)
1885 && __printf_va_arg_table[args_type[cnt] - PA_LAST] != NULL)
1886 {
1887 args_value[cnt].pa_user = alloca (args_size[cnt]);
1888 (*__printf_va_arg_table[args_type[cnt] - PA_LAST])
1889 (args_value[cnt].pa_user, ap_savep);
1890 }
1891 else
1892 args_value[cnt].pa_long_double = 0.0;
1893 break;
1894 case -1:
1895 /* Error case. Not all parameters appear in N$ format
1896 strings. We have no way to determine their type. */
1897 assert (s->_flags2 & _IO_FLAGS2_FORTIFY);
1898 __libc_fatal ("*** invalid %N$ use detected ***\n");
1899 }
1900
1901 /* Now walk through all format specifiers and process them. */
1902 for (; (size_t) nspecs_done < nspecs; ++nspecs_done)
1903 {
1904 STEP4_TABLE;
1905
1906 int is_negative;
1907 union
1908 {
1909 unsigned long long int longlong;
1910 unsigned long int word;
1911 } number;
1912 int base;
1913 union printf_arg the_arg;
1914 CHAR_T *string; /* Pointer to argument string. */
1915
1916 /* Fill variables from values in struct. */
1917 int alt = specs[nspecs_done].info.alt;
1918 int space = specs[nspecs_done].info.space;
1919 int left = specs[nspecs_done].info.left;
1920 int showsign = specs[nspecs_done].info.showsign;
1921 int group = specs[nspecs_done].info.group;
1922 int is_long_double = specs[nspecs_done].info.is_long_double;
1923 int is_short = specs[nspecs_done].info.is_short;
1924 int is_char = specs[nspecs_done].info.is_char;
1925 int is_long = specs[nspecs_done].info.is_long;
1926 int width = specs[nspecs_done].info.width;
1927 int prec = specs[nspecs_done].info.prec;
1928 int use_outdigits = specs[nspecs_done].info.i18n;
1929 char pad = specs[nspecs_done].info.pad;
1930 CHAR_T spec = specs[nspecs_done].info.spec;
1931
1932 workstart = NULL;
1933 CHAR_T *workend = work_buffer + WORK_BUFFER_SIZE;
1934
1935 /* Fill in last information. */
1936 if (specs[nspecs_done].width_arg != -1)
1937 {
1938 /* Extract the field width from an argument. */
1939 specs[nspecs_done].info.width =
1940 args_value[specs[nspecs_done].width_arg].pa_int;
1941
1942 if (specs[nspecs_done].info.width < 0)
1943 /* If the width value is negative left justification is
1944 selected and the value is taken as being positive. */
1945 {
1946 specs[nspecs_done].info.width *= -1;
1947 left = specs[nspecs_done].info.left = 1;
1948 }
1949 width = specs[nspecs_done].info.width;
1950 }
1951
1952 if (specs[nspecs_done].prec_arg != -1)
1953 {
1954 /* Extract the precision from an argument. */
1955 specs[nspecs_done].info.prec =
1956 args_value[specs[nspecs_done].prec_arg].pa_int;
1957
1958 if (specs[nspecs_done].info.prec < 0)
1959 /* If the precision is negative the precision is
1960 omitted. */
1961 specs[nspecs_done].info.prec = -1;
1962
1963 prec = specs[nspecs_done].info.prec;
1964 }
1965
1966 /* Maybe the buffer is too small. */
1967 if (MAX (prec, width) + 32 > WORK_BUFFER_SIZE)
1968 {
1969 if (__libc_use_alloca ((MAX (prec, width) + 32)
1970 * sizeof (CHAR_T)))
1971 workend = ((CHAR_T *) alloca ((MAX (prec, width) + 32)
1972 * sizeof (CHAR_T))
1973 + (MAX (prec, width) + 32));
1974 else
1975 {
1976 workstart = (CHAR_T *) malloc ((MAX (prec, width) + 32)
1977 * sizeof (CHAR_T));
1978 if (workstart == NULL)
1979 {
1980 done = -1;
1981 goto all_done;
1982 }
1983 workend = workstart + (MAX (prec, width) + 32);
1984 }
1985 }
1986
1987 /* Process format specifiers. */
1988 while (1)
1989 {
1990 extern printf_function **__printf_function_table;
1991 int function_done;
1992
1993 if (spec <= UCHAR_MAX
1994 && __printf_function_table != NULL
1995 && __printf_function_table[(size_t) spec] != NULL)
1996 {
1997 const void **ptr = alloca (specs[nspecs_done].ndata_args
1998 * sizeof (const void *));
1999
2000 /* Fill in an array of pointers to the argument values. */
2001 for (unsigned int i = 0; i < specs[nspecs_done].ndata_args;
2002 ++i)
2003 ptr[i] = &args_value[specs[nspecs_done].data_arg + i];
2004
2005 /* Call the function. */
2006 function_done = __printf_function_table[(size_t) spec]
2007 (s, &specs[nspecs_done].info, ptr);
2008
2009 if (function_done != -2)
2010 {
2011 /* If an error occurred we don't have information
2012 about # of chars. */
2013 if (function_done < 0)
2014 {
2015 /* Function has set errno. */
2016 done = -1;
2017 goto all_done;
2018 }
2019
2020 done_add (function_done);
2021 break;
2022 }
2023 }
2024
2025 JUMP (spec, step4_jumps);
2026
2027 process_arg ((&specs[nspecs_done]));
2028 process_string_arg ((&specs[nspecs_done]));
2029
2030 LABEL (form_unknown):
2031 {
2032 unsigned int i;
2033 const void **ptr;
2034
2035 ptr = alloca (specs[nspecs_done].ndata_args
2036 * sizeof (const void *));
2037
2038 /* Fill in an array of pointers to the argument values. */
2039 for (i = 0; i < specs[nspecs_done].ndata_args; ++i)
2040 ptr[i] = &args_value[specs[nspecs_done].data_arg + i];
2041
2042 /* Call the function. */
2043 function_done = printf_unknown (s, &specs[nspecs_done].info,
2044 ptr);
2045
2046 /* If an error occurred we don't have information about #
2047 of chars. */
2048 if (function_done < 0)
2049 {
2050 /* Function has set errno. */
2051 done = -1;
2052 goto all_done;
2053 }
2054
2055 done_add (function_done);
2056 }
2057 break;
2058 }
2059
2060 if (__glibc_unlikely (workstart != NULL))
2061 free (workstart);
2062 workstart = NULL;
2063
2064 /* Write the following constant string. */
2065 outstring (specs[nspecs_done].end_of_fmt,
2066 specs[nspecs_done].next_fmt
2067 - specs[nspecs_done].end_of_fmt);
2068 }
2069 all_done:
2070 if (__glibc_unlikely (args_malloced != NULL))
2071 free (args_malloced);
2072 if (__glibc_unlikely (workstart != NULL))
2073 free (workstart);
2074 scratch_buffer_free (&specsbuf);
2075 return done;
2076 }
2077 \f
2078 /* Handle an unknown format specifier. This prints out a canonicalized
2079 representation of the format spec itself. */
2080 static int
2081 printf_unknown (FILE *s, const struct printf_info *info,
2082 const void *const *args)
2083
2084 {
2085 int done = 0;
2086 CHAR_T work_buffer[MAX (sizeof (info->width), sizeof (info->prec)) * 3];
2087 CHAR_T *const workend
2088 = &work_buffer[sizeof (work_buffer) / sizeof (CHAR_T)];
2089 CHAR_T *w;
2090
2091 outchar (L_('%'));
2092
2093 if (info->alt)
2094 outchar (L_('#'));
2095 if (info->group)
2096 outchar (L_('\''));
2097 if (info->showsign)
2098 outchar (L_('+'));
2099 else if (info->space)
2100 outchar (L_(' '));
2101 if (info->left)
2102 outchar (L_('-'));
2103 if (info->pad == L_('0'))
2104 outchar (L_('0'));
2105 if (info->i18n)
2106 outchar (L_('I'));
2107
2108 if (info->width != 0)
2109 {
2110 w = _itoa_word (info->width, workend, 10, 0);
2111 while (w < workend)
2112 outchar (*w++);
2113 }
2114
2115 if (info->prec != -1)
2116 {
2117 outchar (L_('.'));
2118 w = _itoa_word (info->prec, workend, 10, 0);
2119 while (w < workend)
2120 outchar (*w++);
2121 }
2122
2123 if (info->spec != L_('\0'))
2124 outchar (info->spec);
2125
2126 all_done:
2127 return done;
2128 }
2129 \f
2130 /* Group the digits according to the grouping rules of the current locale.
2131 The interpretation of GROUPING is as in `struct lconv' from <locale.h>. */
2132 static CHAR_T *
2133 internal_function
2134 group_number (CHAR_T *w, CHAR_T *rear_ptr, const char *grouping,
2135 THOUSANDS_SEP_T thousands_sep)
2136 {
2137 int len;
2138 CHAR_T *src, *s;
2139 #ifndef COMPILE_WPRINTF
2140 int tlen = strlen (thousands_sep);
2141 #endif
2142
2143 /* We treat all negative values like CHAR_MAX. */
2144
2145 if (*grouping == CHAR_MAX || *grouping <= 0)
2146 /* No grouping should be done. */
2147 return w;
2148
2149 len = *grouping++;
2150
2151 /* Copy existing string so that nothing gets overwritten. */
2152 src = (CHAR_T *) alloca ((rear_ptr - w) * sizeof (CHAR_T));
2153 s = (CHAR_T *) __mempcpy (src, w,
2154 (rear_ptr - w) * sizeof (CHAR_T));
2155 w = rear_ptr;
2156
2157 /* Process all characters in the string. */
2158 while (s > src)
2159 {
2160 *--w = *--s;
2161
2162 if (--len == 0 && s > src)
2163 {
2164 /* A new group begins. */
2165 #ifdef COMPILE_WPRINTF
2166 *--w = thousands_sep;
2167 #else
2168 int cnt = tlen;
2169 do
2170 *--w = thousands_sep[--cnt];
2171 while (cnt > 0);
2172 #endif
2173
2174 if (*grouping == CHAR_MAX
2175 #if CHAR_MIN < 0
2176 || *grouping < 0
2177 #endif
2178 )
2179 {
2180 /* No further grouping to be done.
2181 Copy the rest of the number. */
2182 do
2183 *--w = *--s;
2184 while (s > src);
2185 break;
2186 }
2187 else if (*grouping != '\0')
2188 /* The previous grouping repeats ad infinitum. */
2189 len = *grouping++;
2190 else
2191 len = grouping[-1];
2192 }
2193 }
2194 return w;
2195 }
2196 \f
2197 /* Helper "class" for `fprintf to unbuffered': creates a temporary buffer. */
2198 struct helper_file
2199 {
2200 struct _IO_FILE_plus _f;
2201 #ifdef COMPILE_WPRINTF
2202 struct _IO_wide_data _wide_data;
2203 #endif
2204 _IO_FILE *_put_stream;
2205 #ifdef _IO_MTSAFE_IO
2206 _IO_lock_t lock;
2207 #endif
2208 };
2209
2210 static int
2211 _IO_helper_overflow (_IO_FILE *s, int c)
2212 {
2213 _IO_FILE *target = ((struct helper_file*) s)->_put_stream;
2214 #ifdef COMPILE_WPRINTF
2215 int used = s->_wide_data->_IO_write_ptr - s->_wide_data->_IO_write_base;
2216 if (used)
2217 {
2218 _IO_size_t written = _IO_sputn (target, s->_wide_data->_IO_write_base,
2219 used);
2220 if (written == 0 || written == WEOF)
2221 return WEOF;
2222 __wmemmove (s->_wide_data->_IO_write_base,
2223 s->_wide_data->_IO_write_base + written,
2224 used - written);
2225 s->_wide_data->_IO_write_ptr -= written;
2226 }
2227 #else
2228 int used = s->_IO_write_ptr - s->_IO_write_base;
2229 if (used)
2230 {
2231 _IO_size_t written = _IO_sputn (target, s->_IO_write_base, used);
2232 if (written == 0 || written == EOF)
2233 return EOF;
2234 memmove (s->_IO_write_base, s->_IO_write_base + written,
2235 used - written);
2236 s->_IO_write_ptr -= written;
2237 }
2238 #endif
2239 return PUTC (c, s);
2240 }
2241
2242 #ifdef COMPILE_WPRINTF
2243 static const struct _IO_jump_t _IO_helper_jumps libio_vtable =
2244 {
2245 JUMP_INIT_DUMMY,
2246 JUMP_INIT (finish, _IO_wdefault_finish),
2247 JUMP_INIT (overflow, _IO_helper_overflow),
2248 JUMP_INIT (underflow, _IO_default_underflow),
2249 JUMP_INIT (uflow, _IO_default_uflow),
2250 JUMP_INIT (pbackfail, (_IO_pbackfail_t) _IO_wdefault_pbackfail),
2251 JUMP_INIT (xsputn, _IO_wdefault_xsputn),
2252 JUMP_INIT (xsgetn, _IO_wdefault_xsgetn),
2253 JUMP_INIT (seekoff, _IO_default_seekoff),
2254 JUMP_INIT (seekpos, _IO_default_seekpos),
2255 JUMP_INIT (setbuf, _IO_default_setbuf),
2256 JUMP_INIT (sync, _IO_default_sync),
2257 JUMP_INIT (doallocate, _IO_wdefault_doallocate),
2258 JUMP_INIT (read, _IO_default_read),
2259 JUMP_INIT (write, _IO_default_write),
2260 JUMP_INIT (seek, _IO_default_seek),
2261 JUMP_INIT (close, _IO_default_close),
2262 JUMP_INIT (stat, _IO_default_stat)
2263 };
2264 #else
2265 static const struct _IO_jump_t _IO_helper_jumps libio_vtable =
2266 {
2267 JUMP_INIT_DUMMY,
2268 JUMP_INIT (finish, _IO_default_finish),
2269 JUMP_INIT (overflow, _IO_helper_overflow),
2270 JUMP_INIT (underflow, _IO_default_underflow),
2271 JUMP_INIT (uflow, _IO_default_uflow),
2272 JUMP_INIT (pbackfail, _IO_default_pbackfail),
2273 JUMP_INIT (xsputn, _IO_default_xsputn),
2274 JUMP_INIT (xsgetn, _IO_default_xsgetn),
2275 JUMP_INIT (seekoff, _IO_default_seekoff),
2276 JUMP_INIT (seekpos, _IO_default_seekpos),
2277 JUMP_INIT (setbuf, _IO_default_setbuf),
2278 JUMP_INIT (sync, _IO_default_sync),
2279 JUMP_INIT (doallocate, _IO_default_doallocate),
2280 JUMP_INIT (read, _IO_default_read),
2281 JUMP_INIT (write, _IO_default_write),
2282 JUMP_INIT (seek, _IO_default_seek),
2283 JUMP_INIT (close, _IO_default_close),
2284 JUMP_INIT (stat, _IO_default_stat)
2285 };
2286 #endif
2287
2288 static int
2289 internal_function
2290 buffered_vfprintf (_IO_FILE *s, const CHAR_T *format,
2291 _IO_va_list args)
2292 {
2293 CHAR_T buf[_IO_BUFSIZ];
2294 struct helper_file helper;
2295 _IO_FILE *hp = (_IO_FILE *) &helper._f;
2296 int result, to_flush;
2297
2298 /* Orient the stream. */
2299 #ifdef ORIENT
2300 ORIENT;
2301 #endif
2302
2303 /* Initialize helper. */
2304 helper._put_stream = s;
2305 #ifdef COMPILE_WPRINTF
2306 hp->_wide_data = &helper._wide_data;
2307 _IO_wsetp (hp, buf, buf + sizeof buf / sizeof (CHAR_T));
2308 hp->_mode = 1;
2309 #else
2310 _IO_setp (hp, buf, buf + sizeof buf);
2311 hp->_mode = -1;
2312 #endif
2313 hp->_IO_file_flags = _IO_MAGIC|_IO_NO_READS|_IO_USER_LOCK;
2314 #if _IO_JUMPS_OFFSET
2315 hp->_vtable_offset = 0;
2316 #endif
2317 #ifdef _IO_MTSAFE_IO
2318 hp->_lock = NULL;
2319 #endif
2320 hp->_flags2 = s->_flags2;
2321 _IO_JUMPS (&helper._f) = (struct _IO_jump_t *) &_IO_helper_jumps;
2322
2323 /* Now print to helper instead. */
2324 #ifndef COMPILE_WPRINTF
2325 result = _IO_vfprintf (hp, format, args);
2326 #else
2327 result = vfprintf (hp, format, args);
2328 #endif
2329
2330 /* Lock stream. */
2331 __libc_cleanup_region_start (1, (void (*) (void *)) &_IO_funlockfile, s);
2332 _IO_flockfile (s);
2333
2334 /* Now flush anything from the helper to the S. */
2335 #ifdef COMPILE_WPRINTF
2336 if ((to_flush = (hp->_wide_data->_IO_write_ptr
2337 - hp->_wide_data->_IO_write_base)) > 0)
2338 {
2339 if ((int) _IO_sputn (s, hp->_wide_data->_IO_write_base, to_flush)
2340 != to_flush)
2341 result = -1;
2342 }
2343 #else
2344 if ((to_flush = hp->_IO_write_ptr - hp->_IO_write_base) > 0)
2345 {
2346 if ((int) _IO_sputn (s, hp->_IO_write_base, to_flush) != to_flush)
2347 result = -1;
2348 }
2349 #endif
2350
2351 /* Unlock the stream. */
2352 _IO_funlockfile (s);
2353 __libc_cleanup_region_end (0);
2354
2355 return result;
2356 }
2357
2358 #undef vfprintf
2359 #ifdef COMPILE_WPRINTF
2360 strong_alias (_IO_vfwprintf, __vfwprintf);
2361 ldbl_weak_alias (_IO_vfwprintf, vfwprintf);
2362 #else
2363 ldbl_strong_alias (_IO_vfprintf_internal, vfprintf);
2364 ldbl_hidden_def (_IO_vfprintf_internal, vfprintf)
2365 ldbl_strong_alias (_IO_vfprintf_internal, _IO_vfprintf);
2366 ldbl_hidden_def (_IO_vfprintf_internal, _IO_vfprintf)
2367 #endif
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