0592e706037a8d205e6a006cb70862f702bfb6d6
[glibc.git] / stdio-common / vfprintf.c
blob0592e706037a8d205e6a006cb70862f702bfb6d6
1 /* Copyright (C) 1991-2015 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
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.
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.
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/>. */
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>
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++.
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. */
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)
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)
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 typedef const char *THOUSANDS_SEP_T;
85 # define L_(Str) Str
86 # define ISDIGIT(Ch) ((unsigned int) ((Ch) - '0') < 10)
87 # define STR_LEN(Str) strlen (Str)
89 # define PUT(F, S, N) _IO_sputn ((F), (S), (N))
90 # define PAD(Padchar) \
91 do { \
92 if (width > 0) \
93 { \
94 _IO_ssize_t written = _IO_padn (s, (Padchar), width); \
95 if (__glibc_unlikely (written != width)) \
96 { \
97 done = -1; \
98 goto all_done; \
99 } \
100 done_add (written); \
101 } \
102 } while (0)
103 # define PUTC(C, F) _IO_putc_unlocked (C, F)
104 # define ORIENT if (_IO_vtable_offset (s) == 0 && _IO_fwide (s, -1) != -1)\
105 return -1
106 #else
107 # define vfprintf _IO_vfwprintf
108 # define CHAR_T wchar_t
109 /* This is a hack!!! There should be a type uwchar_t. */
110 # define UCHAR_T unsigned int /* uwchar_t */
111 # define INT_T wint_t
112 typedef wchar_t THOUSANDS_SEP_T;
113 # define L_(Str) L##Str
114 # define ISDIGIT(Ch) ((unsigned int) ((Ch) - L'0') < 10)
115 # define STR_LEN(Str) __wcslen (Str)
117 # include <_itowa.h>
119 # define PUT(F, S, N) _IO_sputn ((F), (S), (N))
120 # define PAD(Padchar) \
121 do { \
122 if (width > 0) \
123 { \
124 _IO_ssize_t written = _IO_wpadn (s, (Padchar), width); \
125 if (__glibc_unlikely (written != width)) \
126 { \
127 done = -1; \
128 goto all_done; \
129 } \
130 done_add (written); \
131 } \
132 } while (0)
133 # define PUTC(C, F) _IO_putwc_unlocked (C, F)
134 # define ORIENT if (_IO_fwide (s, 1) != 1) return -1
136 # undef _itoa
137 # define _itoa(Val, Buf, Base, Case) _itowa (Val, Buf, Base, Case)
138 # define _itoa_word(Val, Buf, Base, Case) _itowa_word (Val, Buf, Base, Case)
139 # undef EOF
140 # define EOF WEOF
141 #endif
143 #include "_i18n_number.h"
145 /* Include the shared code for parsing the format string. */
146 #include "printf-parse.h"
149 #define outchar(Ch) \
150 do \
151 { \
152 const INT_T outc = (Ch); \
153 if (PUTC (outc, s) == EOF || done == INT_MAX) \
154 { \
155 done = -1; \
156 goto all_done; \
157 } \
158 ++done; \
159 } \
160 while (0)
162 #define outstring(String, Len) \
163 do \
164 { \
165 assert ((size_t) done <= (size_t) INT_MAX); \
166 if ((size_t) PUT (s, (String), (Len)) != (size_t) (Len)) \
167 { \
168 done = -1; \
169 goto all_done; \
170 } \
171 if (__glibc_unlikely (INT_MAX - done < (Len))) \
172 { \
173 done = -1; \
174 __set_errno (EOVERFLOW); \
175 goto all_done; \
176 } \
177 done += (Len); \
178 } \
179 while (0)
181 /* For handling long_double and longlong we use the same flag. If
182 `long' and `long long' are effectively the same type define it to
183 zero. */
184 #if LONG_MAX == LONG_LONG_MAX
185 # define is_longlong 0
186 #else
187 # define is_longlong is_long_double
188 #endif
190 /* If `long' and `int' is effectively the same type we don't have to
191 handle `long separately. */
192 #if INT_MAX == LONG_MAX
193 # define is_long_num 0
194 #else
195 # define is_long_num is_long
196 #endif
199 /* Global constants. */
200 static const CHAR_T null[] = L_("(null)");
202 /* Size of the work_buffer variable (in characters, not bytes. */
203 enum { WORK_BUFFER_SIZE = 1000 };
205 /* This table maps a character into a number representing a class. In
206 each step there is a destination label for each class. */
207 static const uint8_t jump_table[] =
209 /* ' ' */ 1, 0, 0, /* '#' */ 4,
210 0, /* '%' */ 14, 0, /* '\''*/ 6,
211 0, 0, /* '*' */ 7, /* '+' */ 2,
212 0, /* '-' */ 3, /* '.' */ 9, 0,
213 /* '0' */ 5, /* '1' */ 8, /* '2' */ 8, /* '3' */ 8,
214 /* '4' */ 8, /* '5' */ 8, /* '6' */ 8, /* '7' */ 8,
215 /* '8' */ 8, /* '9' */ 8, 0, 0,
216 0, 0, 0, 0,
217 0, /* 'A' */ 26, 0, /* 'C' */ 25,
218 0, /* 'E' */ 19, /* F */ 19, /* 'G' */ 19,
219 0, /* 'I' */ 29, 0, 0,
220 /* 'L' */ 12, 0, 0, 0,
221 0, 0, 0, /* 'S' */ 21,
222 0, 0, 0, 0,
223 /* 'X' */ 18, 0, /* 'Z' */ 13, 0,
224 0, 0, 0, 0,
225 0, /* 'a' */ 26, 0, /* 'c' */ 20,
226 /* 'd' */ 15, /* 'e' */ 19, /* 'f' */ 19, /* 'g' */ 19,
227 /* 'h' */ 10, /* 'i' */ 15, /* 'j' */ 28, 0,
228 /* 'l' */ 11, /* 'm' */ 24, /* 'n' */ 23, /* 'o' */ 17,
229 /* 'p' */ 22, /* 'q' */ 12, 0, /* 's' */ 21,
230 /* 't' */ 27, /* 'u' */ 16, 0, 0,
231 /* 'x' */ 18, 0, /* 'z' */ 13
232 };
234 #define NOT_IN_JUMP_RANGE(Ch) ((Ch) < L_(' ') || (Ch) > L_('z'))
235 #define CHAR_CLASS(Ch) (jump_table[(INT_T) (Ch) - L_(' ')])
236 #define LABEL(Name) do_##Name
237 #ifdef SHARED
238 /* 'int' is enough and it saves some space on 64 bit systems. */
239 # define JUMP_TABLE_TYPE const int
240 # define JUMP_TABLE_BASE_LABEL do_form_unknown
241 # define REF(Name) &&do_##Name - &&JUMP_TABLE_BASE_LABEL
242 # define JUMP(ChExpr, table) \
243 do \
244 { \
245 int offset; \
246 void *ptr; \
247 spec = (ChExpr); \
248 offset = NOT_IN_JUMP_RANGE (spec) ? REF (form_unknown) \
249 : table[CHAR_CLASS (spec)]; \
250 ptr = &&JUMP_TABLE_BASE_LABEL + offset; \
251 goto *ptr; \
252 } \
253 while (0)
254 #else
255 # define JUMP_TABLE_TYPE const void *const
256 # define REF(Name) &&do_##Name
257 # define JUMP(ChExpr, table) \
258 do \
259 { \
260 const void *ptr; \
261 spec = (ChExpr); \
262 ptr = NOT_IN_JUMP_RANGE (spec) ? REF (form_unknown) \
263 : table[CHAR_CLASS (spec)]; \
264 goto *ptr; \
265 } \
266 while (0)
267 #endif
269 #define STEP0_3_TABLE \
270 /* Step 0: at the beginning. */ \
271 static JUMP_TABLE_TYPE step0_jumps[30] = \
272 { \
273 REF (form_unknown), \
274 REF (flag_space), /* for ' ' */ \
275 REF (flag_plus), /* for '+' */ \
276 REF (flag_minus), /* for '-' */ \
277 REF (flag_hash), /* for '<hash>' */ \
278 REF (flag_zero), /* for '0' */ \
279 REF (flag_quote), /* for '\'' */ \
280 REF (width_asterics), /* for '*' */ \
281 REF (width), /* for '1'...'9' */ \
282 REF (precision), /* for '.' */ \
283 REF (mod_half), /* for 'h' */ \
284 REF (mod_long), /* for 'l' */ \
285 REF (mod_longlong), /* for 'L', 'q' */ \
286 REF (mod_size_t), /* for 'z', 'Z' */ \
287 REF (form_percent), /* for '%' */ \
288 REF (form_integer), /* for 'd', 'i' */ \
289 REF (form_unsigned), /* for 'u' */ \
290 REF (form_octal), /* for 'o' */ \
291 REF (form_hexa), /* for 'X', 'x' */ \
292 REF (form_float), /* for 'E', 'e', 'F', 'f', 'G', 'g' */ \
293 REF (form_character), /* for 'c' */ \
294 REF (form_string), /* for 's', 'S' */ \
295 REF (form_pointer), /* for 'p' */ \
296 REF (form_number), /* for 'n' */ \
297 REF (form_strerror), /* for 'm' */ \
298 REF (form_wcharacter), /* for 'C' */ \
299 REF (form_floathex), /* for 'A', 'a' */ \
300 REF (mod_ptrdiff_t), /* for 't' */ \
301 REF (mod_intmax_t), /* for 'j' */ \
302 REF (flag_i18n), /* for 'I' */ \
303 }; \
304 /* Step 1: after processing width. */ \
305 static JUMP_TABLE_TYPE step1_jumps[30] = \
306 { \
307 REF (form_unknown), \
308 REF (form_unknown), /* for ' ' */ \
309 REF (form_unknown), /* for '+' */ \
310 REF (form_unknown), /* for '-' */ \
311 REF (form_unknown), /* for '<hash>' */ \
312 REF (form_unknown), /* for '0' */ \
313 REF (form_unknown), /* for '\'' */ \
314 REF (form_unknown), /* for '*' */ \
315 REF (form_unknown), /* for '1'...'9' */ \
316 REF (precision), /* for '.' */ \
317 REF (mod_half), /* for 'h' */ \
318 REF (mod_long), /* for 'l' */ \
319 REF (mod_longlong), /* for 'L', 'q' */ \
320 REF (mod_size_t), /* for 'z', 'Z' */ \
321 REF (form_percent), /* for '%' */ \
322 REF (form_integer), /* for 'd', 'i' */ \
323 REF (form_unsigned), /* for 'u' */ \
324 REF (form_octal), /* for 'o' */ \
325 REF (form_hexa), /* for 'X', 'x' */ \
326 REF (form_float), /* for 'E', 'e', 'F', 'f', 'G', 'g' */ \
327 REF (form_character), /* for 'c' */ \
328 REF (form_string), /* for 's', 'S' */ \
329 REF (form_pointer), /* for 'p' */ \
330 REF (form_number), /* for 'n' */ \
331 REF (form_strerror), /* for 'm' */ \
332 REF (form_wcharacter), /* for 'C' */ \
333 REF (form_floathex), /* for 'A', 'a' */ \
334 REF (mod_ptrdiff_t), /* for 't' */ \
335 REF (mod_intmax_t), /* for 'j' */ \
336 REF (form_unknown) /* for 'I' */ \
337 }; \
338 /* Step 2: after processing precision. */ \
339 static JUMP_TABLE_TYPE step2_jumps[30] = \
340 { \
341 REF (form_unknown), \
342 REF (form_unknown), /* for ' ' */ \
343 REF (form_unknown), /* for '+' */ \
344 REF (form_unknown), /* for '-' */ \
345 REF (form_unknown), /* for '<hash>' */ \
346 REF (form_unknown), /* for '0' */ \
347 REF (form_unknown), /* for '\'' */ \
348 REF (form_unknown), /* for '*' */ \
349 REF (form_unknown), /* for '1'...'9' */ \
350 REF (form_unknown), /* for '.' */ \
351 REF (mod_half), /* for 'h' */ \
352 REF (mod_long), /* for 'l' */ \
353 REF (mod_longlong), /* for 'L', 'q' */ \
354 REF (mod_size_t), /* for 'z', 'Z' */ \
355 REF (form_percent), /* for '%' */ \
356 REF (form_integer), /* for 'd', 'i' */ \
357 REF (form_unsigned), /* for 'u' */ \
358 REF (form_octal), /* for 'o' */ \
359 REF (form_hexa), /* for 'X', 'x' */ \
360 REF (form_float), /* for 'E', 'e', 'F', 'f', 'G', 'g' */ \
361 REF (form_character), /* for 'c' */ \
362 REF (form_string), /* for 's', 'S' */ \
363 REF (form_pointer), /* for 'p' */ \
364 REF (form_number), /* for 'n' */ \
365 REF (form_strerror), /* for 'm' */ \
366 REF (form_wcharacter), /* for 'C' */ \
367 REF (form_floathex), /* for 'A', 'a' */ \
368 REF (mod_ptrdiff_t), /* for 't' */ \
369 REF (mod_intmax_t), /* for 'j' */ \
370 REF (form_unknown) /* for 'I' */ \
371 }; \
372 /* Step 3a: after processing first 'h' modifier. */ \
373 static JUMP_TABLE_TYPE step3a_jumps[30] = \
374 { \
375 REF (form_unknown), \
376 REF (form_unknown), /* for ' ' */ \
377 REF (form_unknown), /* for '+' */ \
378 REF (form_unknown), /* for '-' */ \
379 REF (form_unknown), /* for '<hash>' */ \
380 REF (form_unknown), /* for '0' */ \
381 REF (form_unknown), /* for '\'' */ \
382 REF (form_unknown), /* for '*' */ \
383 REF (form_unknown), /* for '1'...'9' */ \
384 REF (form_unknown), /* for '.' */ \
385 REF (mod_halfhalf), /* for 'h' */ \
386 REF (form_unknown), /* for 'l' */ \
387 REF (form_unknown), /* for 'L', 'q' */ \
388 REF (form_unknown), /* for 'z', 'Z' */ \
389 REF (form_percent), /* for '%' */ \
390 REF (form_integer), /* for 'd', 'i' */ \
391 REF (form_unsigned), /* for 'u' */ \
392 REF (form_octal), /* for 'o' */ \
393 REF (form_hexa), /* for 'X', 'x' */ \
394 REF (form_unknown), /* for 'E', 'e', 'F', 'f', 'G', 'g' */ \
395 REF (form_unknown), /* for 'c' */ \
396 REF (form_unknown), /* for 's', 'S' */ \
397 REF (form_unknown), /* for 'p' */ \
398 REF (form_number), /* for 'n' */ \
399 REF (form_unknown), /* for 'm' */ \
400 REF (form_unknown), /* for 'C' */ \
401 REF (form_unknown), /* for 'A', 'a' */ \
402 REF (form_unknown), /* for 't' */ \
403 REF (form_unknown), /* for 'j' */ \
404 REF (form_unknown) /* for 'I' */ \
405 }; \
406 /* Step 3b: after processing first 'l' modifier. */ \
407 static JUMP_TABLE_TYPE step3b_jumps[30] = \
408 { \
409 REF (form_unknown), \
410 REF (form_unknown), /* for ' ' */ \
411 REF (form_unknown), /* for '+' */ \
412 REF (form_unknown), /* for '-' */ \
413 REF (form_unknown), /* for '<hash>' */ \
414 REF (form_unknown), /* for '0' */ \
415 REF (form_unknown), /* for '\'' */ \
416 REF (form_unknown), /* for '*' */ \
417 REF (form_unknown), /* for '1'...'9' */ \
418 REF (form_unknown), /* for '.' */ \
419 REF (form_unknown), /* for 'h' */ \
420 REF (mod_longlong), /* for 'l' */ \
421 REF (form_unknown), /* for 'L', 'q' */ \
422 REF (form_unknown), /* for 'z', 'Z' */ \
423 REF (form_percent), /* for '%' */ \
424 REF (form_integer), /* for 'd', 'i' */ \
425 REF (form_unsigned), /* for 'u' */ \
426 REF (form_octal), /* for 'o' */ \
427 REF (form_hexa), /* for 'X', 'x' */ \
428 REF (form_float), /* for 'E', 'e', 'F', 'f', 'G', 'g' */ \
429 REF (form_character), /* for 'c' */ \
430 REF (form_string), /* for 's', 'S' */ \
431 REF (form_pointer), /* for 'p' */ \
432 REF (form_number), /* for 'n' */ \
433 REF (form_strerror), /* for 'm' */ \
434 REF (form_wcharacter), /* for 'C' */ \
435 REF (form_floathex), /* for 'A', 'a' */ \
436 REF (form_unknown), /* for 't' */ \
437 REF (form_unknown), /* for 'j' */ \
438 REF (form_unknown) /* for 'I' */ \
441 #define STEP4_TABLE \
442 /* Step 4: processing format specifier. */ \
443 static JUMP_TABLE_TYPE step4_jumps[30] = \
444 { \
445 REF (form_unknown), \
446 REF (form_unknown), /* for ' ' */ \
447 REF (form_unknown), /* for '+' */ \
448 REF (form_unknown), /* for '-' */ \
449 REF (form_unknown), /* for '<hash>' */ \
450 REF (form_unknown), /* for '0' */ \
451 REF (form_unknown), /* for '\'' */ \
452 REF (form_unknown), /* for '*' */ \
453 REF (form_unknown), /* for '1'...'9' */ \
454 REF (form_unknown), /* for '.' */ \
455 REF (form_unknown), /* for 'h' */ \
456 REF (form_unknown), /* for 'l' */ \
457 REF (form_unknown), /* for 'L', 'q' */ \
458 REF (form_unknown), /* for 'z', 'Z' */ \
459 REF (form_percent), /* for '%' */ \
460 REF (form_integer), /* for 'd', 'i' */ \
461 REF (form_unsigned), /* for 'u' */ \
462 REF (form_octal), /* for 'o' */ \
463 REF (form_hexa), /* for 'X', 'x' */ \
464 REF (form_float), /* for 'E', 'e', 'F', 'f', 'G', 'g' */ \
465 REF (form_character), /* for 'c' */ \
466 REF (form_string), /* for 's', 'S' */ \
467 REF (form_pointer), /* for 'p' */ \
468 REF (form_number), /* for 'n' */ \
469 REF (form_strerror), /* for 'm' */ \
470 REF (form_wcharacter), /* for 'C' */ \
471 REF (form_floathex), /* for 'A', 'a' */ \
472 REF (form_unknown), /* for 't' */ \
473 REF (form_unknown), /* for 'j' */ \
474 REF (form_unknown) /* for 'I' */ \
478 #define process_arg(fspec) \
479 /* Start real work. We know about all flags and modifiers and \
480 now process the wanted format specifier. */ \
481 LABEL (form_percent): \
482 /* Write a literal "%". */ \
483 outchar (L_('%')); \
484 break; \
486 LABEL (form_integer): \
487 /* Signed decimal integer. */ \
488 base = 10; \
490 if (is_longlong) \
491 { \
492 long long int signed_number; \
494 if (fspec == NULL) \
495 signed_number = va_arg (ap, long long int); \
496 else \
497 signed_number = args_value[fspec->data_arg].pa_long_long_int; \
499 is_negative = signed_number < 0; \
500 number.longlong = is_negative ? (- signed_number) : signed_number; \
502 goto LABEL (longlong_number); \
503 } \
504 else \
505 { \
506 long int signed_number; \
508 if (fspec == NULL) \
509 { \
510 if (is_long_num) \
511 signed_number = va_arg (ap, long int); \
512 else if (is_char) \
513 signed_number = (signed char) va_arg (ap, unsigned int); \
514 else if (!is_short) \
515 signed_number = va_arg (ap, int); \
516 else \
517 signed_number = (short int) va_arg (ap, unsigned int); \
518 } \
519 else \
520 if (is_long_num) \
521 signed_number = args_value[fspec->data_arg].pa_long_int; \
522 else if (is_char) \
523 signed_number = (signed char) \
524 args_value[fspec->data_arg].pa_u_int; \
525 else if (!is_short) \
526 signed_number = args_value[fspec->data_arg].pa_int; \
527 else \
528 signed_number = (short int) \
529 args_value[fspec->data_arg].pa_u_int; \
531 is_negative = signed_number < 0; \
532 number.word = is_negative ? (- signed_number) : signed_number; \
534 goto LABEL (number); \
535 } \
536 /* NOTREACHED */ \
538 LABEL (form_unsigned): \
539 /* Unsigned decimal integer. */ \
540 base = 10; \
541 goto LABEL (unsigned_number); \
542 /* NOTREACHED */ \
544 LABEL (form_octal): \
545 /* Unsigned octal integer. */ \
546 base = 8; \
547 goto LABEL (unsigned_number); \
548 /* NOTREACHED */ \
550 LABEL (form_hexa): \
551 /* Unsigned hexadecimal integer. */ \
552 base = 16; \
554 LABEL (unsigned_number): /* Unsigned number of base BASE. */ \
556 /* ISO specifies the `+' and ` ' flags only for signed \
557 conversions. */ \
558 is_negative = 0; \
559 showsign = 0; \
560 space = 0; \
562 if (is_longlong) \
563 { \
564 if (fspec == NULL) \
565 number.longlong = va_arg (ap, unsigned long long int); \
566 else \
567 number.longlong = args_value[fspec->data_arg].pa_u_long_long_int; \
569 LABEL (longlong_number): \
570 if (prec < 0) \
571 /* Supply a default precision if none was given. */ \
572 prec = 1; \
573 else \
574 /* We have to take care for the '0' flag. If a precision \
575 is given it must be ignored. */ \
576 pad = L_(' '); \
578 /* If the precision is 0 and the number is 0 nothing has to \
579 be written for the number, except for the 'o' format in \
580 alternate form. */ \
581 if (prec == 0 && number.longlong == 0) \
582 { \
583 string = workend; \
584 if (base == 8 && alt) \
585 *--string = L_('0'); \
586 } \
587 else \
588 { \
589 /* Put the number in WORK. */ \
590 string = _itoa (number.longlong, workend, base, \
591 spec == L_('X')); \
592 if (group && grouping) \
593 string = group_number (string, workend, grouping, \
594 thousands_sep); \
596 if (use_outdigits && base == 10) \
597 string = _i18n_number_rewrite (string, workend, workend); \
598 } \
599 /* Simplify further test for num != 0. */ \
600 number.word = number.longlong != 0; \
601 } \
602 else \
603 { \
604 if (fspec == NULL) \
605 { \
606 if (is_long_num) \
607 number.word = va_arg (ap, unsigned long int); \
608 else if (is_char) \
609 number.word = (unsigned char) va_arg (ap, unsigned int); \
610 else if (!is_short) \
611 number.word = va_arg (ap, unsigned int); \
612 else \
613 number.word = (unsigned short int) va_arg (ap, unsigned int); \
614 } \
615 else \
616 if (is_long_num) \
617 number.word = args_value[fspec->data_arg].pa_u_long_int; \
618 else if (is_char) \
619 number.word = (unsigned char) \
620 args_value[fspec->data_arg].pa_u_int; \
621 else if (!is_short) \
622 number.word = args_value[fspec->data_arg].pa_u_int; \
623 else \
624 number.word = (unsigned short int) \
625 args_value[fspec->data_arg].pa_u_int; \
627 LABEL (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_(' '); \
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.word == 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_word (number.word, workend, base, \
649 spec == L_('X')); \
650 if (group && grouping) \
651 string = group_number (string, workend, grouping, \
652 thousands_sep); \
654 if (use_outdigits && base == 10) \
655 string = _i18n_number_rewrite (string, workend, workend); \
656 } \
657 } \
659 if (prec <= workend - string && number.word != 0 && alt && base == 8) \
660 /* Add octal marker. */ \
661 *--string = L_('0'); \
663 prec = MAX (0, prec - (workend - string)); \
665 if (!left) \
666 { \
667 width -= workend - string + prec; \
669 if (number.word != 0 && alt && base == 16) \
670 /* Account for 0X hex marker. */ \
671 width -= 2; \
673 if (is_negative || showsign || space) \
674 --width; \
676 if (pad == L_(' ')) \
677 { \
678 PAD (L_(' ')); \
679 width = 0; \
680 } \
682 if (is_negative) \
683 outchar (L_('-')); \
684 else if (showsign) \
685 outchar (L_('+')); \
686 else if (space) \
687 outchar (L_(' ')); \
689 if (number.word != 0 && alt && base == 16) \
690 { \
691 outchar (L_('0')); \
692 outchar (spec); \
693 } \
695 width += prec; \
696 PAD (L_('0')); \
698 outstring (string, workend - string); \
700 break; \
701 } \
702 else \
703 { \
704 if (is_negative) \
705 { \
706 outchar (L_('-')); \
707 --width; \
708 } \
709 else if (showsign) \
710 { \
711 outchar (L_('+')); \
712 --width; \
713 } \
714 else if (space) \
715 { \
716 outchar (L_(' ')); \
717 --width; \
718 } \
720 if (number.word != 0 && alt && base == 16) \
721 { \
722 outchar (L_('0')); \
723 outchar (spec); \
724 width -= 2; \
725 } \
727 width -= workend - string + prec; \
729 if (prec > 0) \
730 { \
731 int temp = width; \
732 width = prec; \
733 PAD (L_('0')); \
734 width = temp; \
735 } \
737 outstring (string, workend - string); \
739 PAD (L_(' ')); \
740 break; \
741 } \
743 LABEL (form_float): \
744 { \
745 /* Floating-point number. This is handled by printf_fp.c. */ \
746 const void *ptr; \
747 int function_done; \
749 if (fspec == NULL) \
750 { \
751 if (__ldbl_is_dbl) \
752 is_long_double = 0; \
754 struct printf_info info = { .prec = prec, \
755 .width = width, \
756 .spec = spec, \
757 .is_long_double = is_long_double, \
758 .is_short = is_short, \
759 .is_long = is_long, \
760 .alt = alt, \
761 .space = space, \
762 .left = left, \
763 .showsign = showsign, \
764 .group = group, \
765 .pad = pad, \
766 .extra = 0, \
767 .i18n = use_outdigits, \
768 .wide = sizeof (CHAR_T) != 1 }; \
770 if (is_long_double) \
771 the_arg.pa_long_double = va_arg (ap, long double); \
772 else \
773 the_arg.pa_double = va_arg (ap, double); \
774 ptr = (const void *) &the_arg; \
776 function_done = __printf_fp (s, &info, &ptr); \
777 } \
778 else \
779 { \
780 ptr = (const void *) &args_value[fspec->data_arg]; \
781 if (__ldbl_is_dbl) \
782 { \
783 fspec->data_arg_type = PA_DOUBLE; \
784 fspec->info.is_long_double = 0; \
785 } \
787 function_done = __printf_fp (s, &fspec->info, &ptr); \
788 } \
790 if (function_done < 0) \
791 { \
792 /* Error in print handler; up to handler to set errno. */ \
793 done = -1; \
794 goto all_done; \
795 } \
797 done_add (function_done); \
798 } \
799 break; \
801 LABEL (form_floathex): \
802 { \
803 /* Floating point number printed as hexadecimal number. */ \
804 const void *ptr; \
805 int function_done; \
807 if (fspec == NULL) \
808 { \
809 if (__ldbl_is_dbl) \
810 is_long_double = 0; \
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 .wide = sizeof (CHAR_T) != 1 }; \
827 if (is_long_double) \
828 the_arg.pa_long_double = va_arg (ap, long double); \
829 else \
830 the_arg.pa_double = va_arg (ap, double); \
831 ptr = (const void *) &the_arg; \
833 function_done = __printf_fphex (s, &info, &ptr); \
834 } \
835 else \
836 { \
837 ptr = (const void *) &args_value[fspec->data_arg]; \
838 if (__ldbl_is_dbl) \
839 fspec->info.is_long_double = 0; \
841 function_done = __printf_fphex (s, &fspec->info, &ptr); \
842 } \
844 if (function_done < 0) \
845 { \
846 /* Error in print handler; up to handler to set errno. */ \
847 done = -1; \
848 goto all_done; \
849 } \
851 done_add (function_done); \
852 } \
853 break; \
855 LABEL (form_pointer): \
856 /* Generic pointer. */ \
857 { \
858 const void *ptr; \
859 if (fspec == NULL) \
860 ptr = va_arg (ap, void *); \
861 else \
862 ptr = args_value[fspec->data_arg].pa_pointer; \
863 if (ptr != NULL) \
864 { \
865 /* If the pointer is not NULL, write it as a %#x spec. */ \
866 base = 16; \
867 number.word = (unsigned long int) ptr; \
868 is_negative = 0; \
869 alt = 1; \
870 group = 0; \
871 spec = L_('x'); \
872 goto LABEL (number); \
873 } \
874 else \
875 { \
876 /* Write "(nil)" for a nil pointer. */ \
877 string = (CHAR_T *) L_("(nil)"); \
878 /* Make sure the full string "(nil)" is printed. */ \
879 if (prec < 5) \
880 prec = 5; \
881 /* This is a wide string iff compiling wprintf. */ \
882 is_long = sizeof (CHAR_T) > 1; \
883 goto LABEL (print_string); \
884 } \
885 } \
886 /* NOTREACHED */ \
888 LABEL (form_number): \
889 if (s->_flags2 & _IO_FLAGS2_FORTIFY) \
890 { \
891 if (! readonly_format) \
892 { \
893 extern int __readonly_area (const void *, size_t) \
894 attribute_hidden; \
895 readonly_format \
896 = __readonly_area (format, ((STR_LEN (format) + 1) \
897 * sizeof (CHAR_T))); \
898 } \
899 if (readonly_format < 0) \
900 __libc_fatal ("*** %n in writable segment detected ***\n"); \
901 } \
902 /* Answer the count of characters written. */ \
903 if (fspec == NULL) \
904 { \
905 if (is_longlong) \
906 *(long long int *) va_arg (ap, void *) = done; \
907 else if (is_long_num) \
908 *(long int *) va_arg (ap, void *) = done; \
909 else if (is_char) \
910 *(char *) va_arg (ap, void *) = done; \
911 else if (!is_short) \
912 *(int *) va_arg (ap, void *) = done; \
913 else \
914 *(short int *) va_arg (ap, void *) = done; \
915 } \
916 else \
917 if (is_longlong) \
918 *(long long int *) args_value[fspec->data_arg].pa_pointer = done; \
919 else if (is_long_num) \
920 *(long int *) args_value[fspec->data_arg].pa_pointer = done; \
921 else if (is_char) \
922 *(char *) args_value[fspec->data_arg].pa_pointer = done; \
923 else if (!is_short) \
924 *(int *) args_value[fspec->data_arg].pa_pointer = done; \
925 else \
926 *(short int *) args_value[fspec->data_arg].pa_pointer = done; \
927 break; \
929 LABEL (form_strerror): \
930 /* Print description of error ERRNO. */ \
931 string = \
932 (CHAR_T *) __strerror_r (save_errno, (char *) work_buffer, \
933 WORK_BUFFER_SIZE * sizeof (CHAR_T)); \
934 is_long = 0; /* This is no wide-char string. */ \
935 goto LABEL (print_string)
937 #ifdef COMPILE_WPRINTF
938 # define process_string_arg(fspec) \
939 LABEL (form_character): \
940 /* Character. */ \
941 if (is_long) \
942 goto LABEL (form_wcharacter); \
943 --width; /* Account for the character itself. */ \
944 if (!left) \
945 PAD (L' '); \
946 if (fspec == NULL) \
947 outchar (__btowc ((unsigned char) va_arg (ap, int))); /* Promoted. */ \
948 else \
949 outchar (__btowc ((unsigned char) \
950 args_value[fspec->data_arg].pa_int)); \
951 if (left) \
952 PAD (L' '); \
953 break; \
955 LABEL (form_wcharacter): \
956 { \
957 /* Wide character. */ \
958 --width; \
959 if (!left) \
960 PAD (L' '); \
961 if (fspec == NULL) \
962 outchar (va_arg (ap, wchar_t)); \
963 else \
964 outchar (args_value[fspec->data_arg].pa_wchar); \
965 if (left) \
966 PAD (L' '); \
967 } \
968 break; \
970 LABEL (form_string): \
971 { \
972 size_t len; \
973 int string_malloced; \
975 /* The string argument could in fact be `char *' or `wchar_t *'. \
976 But this should not make a difference here. */ \
977 if (fspec == NULL) \
978 string = (CHAR_T *) va_arg (ap, const wchar_t *); \
979 else \
980 string = (CHAR_T *) args_value[fspec->data_arg].pa_wstring; \
982 /* Entry point for printing other strings. */ \
983 LABEL (print_string): \
985 string_malloced = 0; \
986 if (string == NULL) \
987 { \
988 /* Write "(null)" if there's space. */ \
989 if (prec == -1 \
990 || prec >= (int) (sizeof (null) / sizeof (null[0])) - 1) \
991 { \
992 string = (CHAR_T *) null; \
993 len = (sizeof (null) / sizeof (null[0])) - 1; \
994 } \
995 else \
996 { \
997 string = (CHAR_T *) L""; \
998 len = 0; \
999 } \
1000 } \
1001 else if (!is_long && spec != L_('S')) \
1002 { \
1003 /* This is complicated. We have to transform the multibyte \
1004 string into a wide character string. */ \
1005 const char *mbs = (const char *) string; \
1006 mbstate_t mbstate; \
1008 len = prec != -1 ? __strnlen (mbs, (size_t) prec) : strlen (mbs); \
1010 /* Allocate dynamically an array which definitely is long \
1011 enough for the wide character version. Each byte in the \
1012 multi-byte string can produce at most one wide character. */ \
1013 if (__glibc_unlikely (len > SIZE_MAX / sizeof (wchar_t))) \
1014 { \
1015 __set_errno (EOVERFLOW); \
1016 done = -1; \
1017 goto all_done; \
1018 } \
1019 else if (__libc_use_alloca (len * sizeof (wchar_t))) \
1020 string = (CHAR_T *) alloca (len * sizeof (wchar_t)); \
1021 else if ((string = (CHAR_T *) malloc (len * sizeof (wchar_t))) \
1022 == NULL) \
1023 { \
1024 done = -1; \
1025 goto all_done; \
1026 } \
1027 else \
1028 string_malloced = 1; \
1030 memset (&mbstate, '\0', sizeof (mbstate_t)); \
1031 len = __mbsrtowcs (string, &mbs, len, &mbstate); \
1032 if (len == (size_t) -1) \
1033 { \
1034 /* Illegal multibyte character. */ \
1035 done = -1; \
1036 goto all_done; \
1037 } \
1038 } \
1039 else \
1040 { \
1041 if (prec != -1) \
1042 /* Search for the end of the string, but don't search past \
1043 the length specified by the precision. */ \
1044 len = __wcsnlen (string, prec); \
1045 else \
1046 len = __wcslen (string); \
1047 } \
1049 if ((width -= len) < 0) \
1050 { \
1051 outstring (string, len); \
1052 break; \
1053 } \
1055 if (!left) \
1056 PAD (L' '); \
1057 outstring (string, len); \
1058 if (left) \
1059 PAD (L' '); \
1060 if (__glibc_unlikely (string_malloced)) \
1061 free (string); \
1062 } \
1063 break;
1064 #else
1065 # define process_string_arg(fspec) \
1066 LABEL (form_character): \
1067 /* Character. */ \
1068 if (is_long) \
1069 goto LABEL (form_wcharacter); \
1070 --width; /* Account for the character itself. */ \
1071 if (!left) \
1072 PAD (' '); \
1073 if (fspec == NULL) \
1074 outchar ((unsigned char) va_arg (ap, int)); /* Promoted. */ \
1075 else \
1076 outchar ((unsigned char) args_value[fspec->data_arg].pa_int); \
1077 if (left) \
1078 PAD (' '); \
1079 break; \
1081 LABEL (form_wcharacter): \
1082 { \
1083 /* Wide character. */ \
1084 char buf[MB_CUR_MAX]; \
1085 mbstate_t mbstate; \
1086 size_t len; \
1088 memset (&mbstate, '\0', sizeof (mbstate_t)); \
1089 len = __wcrtomb (buf, (fspec == NULL ? va_arg (ap, wchar_t) \
1090 : args_value[fspec->data_arg].pa_wchar), \
1091 &mbstate); \
1092 if (len == (size_t) -1) \
1093 { \
1094 /* Something went wrong during the conversion. Bail out. */ \
1095 done = -1; \
1096 goto all_done; \
1097 } \
1098 width -= len; \
1099 if (!left) \
1100 PAD (' '); \
1101 outstring (buf, len); \
1102 if (left) \
1103 PAD (' '); \
1104 } \
1105 break; \
1107 LABEL (form_string): \
1108 { \
1109 size_t len; \
1110 int string_malloced; \
1112 /* The string argument could in fact be `char *' or `wchar_t *'. \
1113 But this should not make a difference here. */ \
1114 if (fspec == NULL) \
1115 string = (char *) va_arg (ap, const char *); \
1116 else \
1117 string = (char *) args_value[fspec->data_arg].pa_string; \
1119 /* Entry point for printing other strings. */ \
1120 LABEL (print_string): \
1122 string_malloced = 0; \
1123 if (string == NULL) \
1124 { \
1125 /* Write "(null)" if there's space. */ \
1126 if (prec == -1 || prec >= (int) sizeof (null) - 1) \
1127 { \
1128 string = (char *) null; \
1129 len = sizeof (null) - 1; \
1130 } \
1131 else \
1132 { \
1133 string = (char *) ""; \
1134 len = 0; \
1135 } \
1136 } \
1137 else if (!is_long && spec != L_('S')) \
1138 { \
1139 if (prec != -1) \
1140 /* Search for the end of the string, but don't search past \
1141 the length (in bytes) specified by the precision. */ \
1142 len = __strnlen (string, prec); \
1143 else \
1144 len = strlen (string); \
1145 } \
1146 else \
1147 { \
1148 const wchar_t *s2 = (const wchar_t *) string; \
1149 mbstate_t mbstate; \
1151 memset (&mbstate, '\0', sizeof (mbstate_t)); \
1153 if (prec >= 0) \
1154 { \
1155 /* The string `s2' might not be NUL terminated. */ \
1156 if (__libc_use_alloca (prec)) \
1157 string = (char *) alloca (prec); \
1158 else if ((string = (char *) malloc (prec)) == NULL) \
1159 { \
1160 done = -1; \
1161 goto all_done; \
1162 } \
1163 else \
1164 string_malloced = 1; \
1165 len = __wcsrtombs (string, &s2, prec, &mbstate); \
1166 } \
1167 else \
1168 { \
1169 len = __wcsrtombs (NULL, &s2, 0, &mbstate); \
1170 if (len != (size_t) -1) \
1171 { \
1172 assert (__mbsinit (&mbstate)); \
1173 s2 = (const wchar_t *) string; \
1174 if (__libc_use_alloca (len + 1)) \
1175 string = (char *) alloca (len + 1); \
1176 else if ((string = (char *) malloc (len + 1)) == NULL) \
1177 { \
1178 done = -1; \
1179 goto all_done; \
1180 } \
1181 else \
1182 string_malloced = 1; \
1183 (void) __wcsrtombs (string, &s2, len + 1, &mbstate); \
1184 } \
1185 } \
1187 if (len == (size_t) -1) \
1188 { \
1189 /* Illegal wide-character string. */ \
1190 done = -1; \
1191 goto all_done; \
1192 } \
1193 } \
1195 if ((width -= len) < 0) \
1196 { \
1197 outstring (string, len); \
1198 break; \
1199 } \
1201 if (!left) \
1202 PAD (' '); \
1203 outstring (string, len); \
1204 if (left) \
1205 PAD (' '); \
1206 if (__glibc_unlikely (string_malloced)) \
1207 free (string); \
1208 } \
1209 break;
1210 #endif
1212 /* Helper function to provide temporary buffering for unbuffered streams. */
1213 static int buffered_vfprintf (FILE *stream, const CHAR_T *fmt, va_list)
1214 __THROW __attribute__ ((noinline)) internal_function;
1216 /* Handle positional format specifiers. */
1217 static int printf_positional (_IO_FILE *s,
1218 const CHAR_T *format, int readonly_format,
1219 va_list ap, va_list *ap_savep, int done,
1220 int nspecs_done, const UCHAR_T *lead_str_end,
1221 CHAR_T *work_buffer, int save_errno,
1222 const char *grouping, THOUSANDS_SEP_T);
1224 /* Handle unknown format specifier. */
1225 static int printf_unknown (FILE *, const struct printf_info *,
1226 const void *const *) __THROW;
1228 /* Group digits of number string. */
1229 static CHAR_T *group_number (CHAR_T *, CHAR_T *, const char *, THOUSANDS_SEP_T)
1230 __THROW internal_function;
1232 /* The function itself. */
1233 int
1234 vfprintf (FILE *s, const CHAR_T *format, va_list ap)
1236 /* The character used as thousands separator. */
1237 THOUSANDS_SEP_T thousands_sep = 0;
1239 /* The string describing the size of groups of digits. */
1240 const char *grouping;
1242 /* Place to accumulate the result. */
1243 int done;
1245 /* Current character in format string. */
1246 const UCHAR_T *f;
1248 /* End of leading constant string. */
1249 const UCHAR_T *lead_str_end;
1251 /* Points to next format specifier. */
1252 const UCHAR_T *end_of_spec;
1254 /* Buffer intermediate results. */
1255 CHAR_T work_buffer[WORK_BUFFER_SIZE];
1256 CHAR_T *workstart = NULL;
1257 CHAR_T *workend;
1259 /* We have to save the original argument pointer. */
1260 va_list ap_save;
1262 /* Count number of specifiers we already processed. */
1263 int nspecs_done;
1265 /* For the %m format we may need the current `errno' value. */
1266 int save_errno = errno;
1268 /* 1 if format is in read-only memory, -1 if it is in writable memory,
1269 0 if unknown. */
1270 int readonly_format = 0;
1272 /* Orient the stream. */
1273 #ifdef ORIENT
1274 ORIENT;
1275 #endif
1277 /* Sanity check of arguments. */
1278 ARGCHECK (s, format);
1280 #ifdef ORIENT
1281 /* Check for correct orientation. */
1282 if (_IO_vtable_offset (s) == 0 &&
1283 _IO_fwide (s, sizeof (CHAR_T) == 1 ? -1 : 1)
1284 != (sizeof (CHAR_T) == 1 ? -1 : 1))
1285 /* The stream is already oriented otherwise. */
1286 return EOF;
1287 #endif
1289 if (UNBUFFERED_P (s))
1290 /* Use a helper function which will allocate a local temporary buffer
1291 for the stream and then call us again. */
1292 return buffered_vfprintf (s, format, ap);
1294 /* Initialize local variables. */
1295 done = 0;
1296 grouping = (const char *) -1;
1297 #ifdef __va_copy
1298 /* This macro will be available soon in gcc's <stdarg.h>. We need it
1299 since on some systems `va_list' is not an integral type. */
1300 __va_copy (ap_save, ap);
1301 #else
1302 ap_save = ap;
1303 #endif
1304 nspecs_done = 0;
1306 #ifdef COMPILE_WPRINTF
1307 /* Find the first format specifier. */
1308 f = lead_str_end = __find_specwc ((const UCHAR_T *) format);
1309 #else
1310 /* Find the first format specifier. */
1311 f = lead_str_end = __find_specmb ((const UCHAR_T *) format);
1312 #endif
1314 /* Lock stream. */
1315 _IO_cleanup_region_start ((void (*) (void *)) &_IO_funlockfile, s);
1316 _IO_flockfile (s);
1318 /* Write the literal text before the first format. */
1319 outstring ((const UCHAR_T *) format,
1320 lead_str_end - (const UCHAR_T *) format);
1322 /* If we only have to print a simple string, return now. */
1323 if (*f == L_('\0'))
1324 goto all_done;
1326 /* Use the slow path in case any printf handler is registered. */
1327 if (__glibc_unlikely (__printf_function_table != NULL
1328 || __printf_modifier_table != NULL
1329 || __printf_va_arg_table != NULL))
1330 goto do_positional;
1332 /* Process whole format string. */
1333 do
1335 STEP0_3_TABLE;
1336 STEP4_TABLE;
1338 union printf_arg *args_value; /* This is not used here but ... */
1339 int is_negative; /* Flag for negative number. */
1340 union
1342 unsigned long long int longlong;
1343 unsigned long int word;
1344 } number;
1345 int base;
1346 union printf_arg the_arg;
1347 CHAR_T *string; /* Pointer to argument string. */
1348 int alt = 0; /* Alternate format. */
1349 int space = 0; /* Use space prefix if no sign is needed. */
1350 int left = 0; /* Left-justify output. */
1351 int showsign = 0; /* Always begin with plus or minus sign. */
1352 int group = 0; /* Print numbers according grouping rules. */
1353 int is_long_double = 0; /* Argument is long double/ long long int. */
1354 int is_short = 0; /* Argument is short int. */
1355 int is_long = 0; /* Argument is long int. */
1356 int is_char = 0; /* Argument is promoted (unsigned) char. */
1357 int width = 0; /* Width of output; 0 means none specified. */
1358 int prec = -1; /* Precision of output; -1 means none specified. */
1359 /* This flag is set by the 'I' modifier and selects the use of the
1360 `outdigits' as determined by the current locale. */
1361 int use_outdigits = 0;
1362 UCHAR_T pad = L_(' ');/* Padding character. */
1363 CHAR_T spec;
1365 workstart = NULL;
1366 workend = work_buffer + WORK_BUFFER_SIZE;
1368 /* Get current character in format string. */
1369 JUMP (*++f, step0_jumps);
1371 /* ' ' flag. */
1372 LABEL (flag_space):
1373 space = 1;
1374 JUMP (*++f, step0_jumps);
1376 /* '+' flag. */
1377 LABEL (flag_plus):
1378 showsign = 1;
1379 JUMP (*++f, step0_jumps);
1381 /* The '-' flag. */
1382 LABEL (flag_minus):
1383 left = 1;
1384 pad = L_(' ');
1385 JUMP (*++f, step0_jumps);
1387 /* The '#' flag. */
1388 LABEL (flag_hash):
1389 alt = 1;
1390 JUMP (*++f, step0_jumps);
1392 /* The '0' flag. */
1393 LABEL (flag_zero):
1394 if (!left)
1395 pad = L_('0');
1396 JUMP (*++f, step0_jumps);
1398 /* The '\'' flag. */
1399 LABEL (flag_quote):
1400 group = 1;
1402 if (grouping == (const char *) -1)
1404 #ifdef COMPILE_WPRINTF
1405 thousands_sep = _NL_CURRENT_WORD (LC_NUMERIC,
1406 _NL_NUMERIC_THOUSANDS_SEP_WC);
1407 #else
1408 thousands_sep = _NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP);
1409 #endif
1411 grouping = _NL_CURRENT (LC_NUMERIC, GROUPING);
1412 if (*grouping == '\0' || *grouping == CHAR_MAX
1413 #ifdef COMPILE_WPRINTF
1414 || thousands_sep == L'\0'
1415 #else
1416 || *thousands_sep == '\0'
1417 #endif
1419 grouping = NULL;
1421 JUMP (*++f, step0_jumps);
1423 LABEL (flag_i18n):
1424 use_outdigits = 1;
1425 JUMP (*++f, step0_jumps);
1427 /* Get width from argument. */
1428 LABEL (width_asterics):
1430 const UCHAR_T *tmp; /* Temporary value. */
1432 tmp = ++f;
1433 if (ISDIGIT (*tmp))
1435 int pos = read_int (&tmp);
1437 if (pos == -1)
1439 __set_errno (EOVERFLOW);
1440 done = -1;
1441 goto all_done;
1444 if (pos && *tmp == L_('$'))
1445 /* The width comes from a positional parameter. */
1446 goto do_positional;
1448 width = va_arg (ap, int);
1450 /* Negative width means left justified. */
1451 if (width < 0)
1453 width = -width;
1454 pad = L_(' ');
1455 left = 1;
1458 if (__glibc_unlikely (width >= INT_MAX / sizeof (CHAR_T) - 32))
1460 __set_errno (EOVERFLOW);
1461 done = -1;
1462 goto all_done;
1465 if (width >= WORK_BUFFER_SIZE - 32)
1467 /* We have to use a special buffer. The "32" is just a safe
1468 bet for all the output which is not counted in the width. */
1469 size_t needed = ((size_t) width + 32) * sizeof (CHAR_T);
1470 if (__libc_use_alloca (needed))
1471 workend = (CHAR_T *) alloca (needed) + width + 32;
1472 else
1474 workstart = (CHAR_T *) malloc (needed);
1475 if (workstart == NULL)
1477 done = -1;
1478 goto all_done;
1480 workend = workstart + width + 32;
1484 JUMP (*f, step1_jumps);
1486 /* Given width in format string. */
1487 LABEL (width):
1488 width = read_int (&f);
1490 if (__glibc_unlikely (width == -1
1491 || width >= INT_MAX / sizeof (CHAR_T) - 32))
1493 __set_errno (EOVERFLOW);
1494 done = -1;
1495 goto all_done;
1498 if (width >= WORK_BUFFER_SIZE - 32)
1500 /* We have to use a special buffer. The "32" is just a safe
1501 bet for all the output which is not counted in the width. */
1502 size_t needed = ((size_t) width + 32) * sizeof (CHAR_T);
1503 if (__libc_use_alloca (needed))
1504 workend = (CHAR_T *) alloca (needed) + width + 32;
1505 else
1507 workstart = (CHAR_T *) malloc (needed);
1508 if (workstart == NULL)
1510 done = -1;
1511 goto all_done;
1513 workend = workstart + width + 32;
1516 if (*f == L_('$'))
1517 /* Oh, oh. The argument comes from a positional parameter. */
1518 goto do_positional;
1519 JUMP (*f, step1_jumps);
1521 LABEL (precision):
1522 ++f;
1523 if (*f == L_('*'))
1525 const UCHAR_T *tmp; /* Temporary value. */
1527 tmp = ++f;
1528 if (ISDIGIT (*tmp))
1530 int pos = read_int (&tmp);
1532 if (pos == -1)
1534 __set_errno (EOVERFLOW);
1535 done = -1;
1536 goto all_done;
1539 if (pos && *tmp == L_('$'))
1540 /* The precision comes from a positional parameter. */
1541 goto do_positional;
1543 prec = va_arg (ap, int);
1545 /* If the precision is negative the precision is omitted. */
1546 if (prec < 0)
1547 prec = -1;
1549 else if (ISDIGIT (*f))
1551 prec = read_int (&f);
1553 /* The precision was specified in this case as an extremely
1554 large positive value. */
1555 if (prec == -1)
1557 __set_errno (EOVERFLOW);
1558 done = -1;
1559 goto all_done;
1562 else
1563 prec = 0;
1564 if (prec > width && prec > WORK_BUFFER_SIZE - 32)
1566 if (__glibc_unlikely (prec >= INT_MAX / sizeof (CHAR_T) - 32))
1568 __set_errno (EOVERFLOW);
1569 done = -1;
1570 goto all_done;
1572 size_t needed = ((size_t) prec + 32) * sizeof (CHAR_T);
1574 if (__libc_use_alloca (needed))
1575 workend = (CHAR_T *) alloca (needed) + prec + 32;
1576 else
1578 workstart = (CHAR_T *) malloc (needed);
1579 if (workstart == NULL)
1581 done = -1;
1582 goto all_done;
1584 workend = workstart + prec + 32;
1587 JUMP (*f, step2_jumps);
1589 /* Process 'h' modifier. There might another 'h' following. */
1590 LABEL (mod_half):
1591 is_short = 1;
1592 JUMP (*++f, step3a_jumps);
1594 /* Process 'hh' modifier. */
1595 LABEL (mod_halfhalf):
1596 is_short = 0;
1597 is_char = 1;
1598 JUMP (*++f, step4_jumps);
1600 /* Process 'l' modifier. There might another 'l' following. */
1601 LABEL (mod_long):
1602 is_long = 1;
1603 JUMP (*++f, step3b_jumps);
1605 /* Process 'L', 'q', or 'll' modifier. No other modifier is
1606 allowed to follow. */
1607 LABEL (mod_longlong):
1608 is_long_double = 1;
1609 is_long = 1;
1610 JUMP (*++f, step4_jumps);
1612 LABEL (mod_size_t):
1613 is_long_double = sizeof (size_t) > sizeof (unsigned long int);
1614 is_long = sizeof (size_t) > sizeof (unsigned int);
1615 JUMP (*++f, step4_jumps);
1617 LABEL (mod_ptrdiff_t):
1618 is_long_double = sizeof (ptrdiff_t) > sizeof (unsigned long int);
1619 is_long = sizeof (ptrdiff_t) > sizeof (unsigned int);
1620 JUMP (*++f, step4_jumps);
1622 LABEL (mod_intmax_t):
1623 is_long_double = sizeof (intmax_t) > sizeof (unsigned long int);
1624 is_long = sizeof (intmax_t) > sizeof (unsigned int);
1625 JUMP (*++f, step4_jumps);
1627 /* Process current format. */
1628 while (1)
1630 process_arg (((struct printf_spec *) NULL));
1631 process_string_arg (((struct printf_spec *) NULL));
1633 LABEL (form_unknown):
1634 if (spec == L_('\0'))
1636 /* The format string ended before the specifier is complete. */
1637 __set_errno (EINVAL);
1638 done = -1;
1639 goto all_done;
1642 /* If we are in the fast loop force entering the complicated
1643 one. */
1644 goto do_positional;
1647 /* The format is correctly handled. */
1648 ++nspecs_done;
1650 if (__glibc_unlikely (workstart != NULL))
1651 free (workstart);
1652 workstart = NULL;
1654 /* Look for next format specifier. */
1655 #ifdef COMPILE_WPRINTF
1656 f = __find_specwc ((end_of_spec = ++f));
1657 #else
1658 f = __find_specmb ((end_of_spec = ++f));
1659 #endif
1661 /* Write the following constant string. */
1662 outstring (end_of_spec, f - end_of_spec);
1664 while (*f != L_('\0'));
1666 /* Unlock stream and return. */
1667 goto all_done;
1669 /* Hand off processing for positional parameters. */
1670 do_positional:
1671 if (__glibc_unlikely (workstart != NULL))
1673 free (workstart);
1674 workstart = NULL;
1676 done = printf_positional (s, format, readonly_format, ap, &ap_save,
1677 done, nspecs_done, lead_str_end, work_buffer,
1678 save_errno, grouping, thousands_sep);
1680 all_done:
1681 if (__glibc_unlikely (workstart != NULL))
1682 free (workstart);
1683 /* Unlock the stream. */
1684 _IO_funlockfile (s);
1685 _IO_cleanup_region_end (0);
1687 return done;
1689 \f
1690 static int
1691 printf_positional (_IO_FILE *s, const CHAR_T *format, int readonly_format,
1692 va_list ap, va_list *ap_savep, int done, int nspecs_done,
1693 const UCHAR_T *lead_str_end,
1694 CHAR_T *work_buffer, int save_errno,
1695 const char *grouping, THOUSANDS_SEP_T thousands_sep)
1697 /* For the argument descriptions, which may be allocated on the heap. */
1698 void *args_malloced = NULL;
1700 /* For positional argument handling. */
1701 struct printf_spec *specs;
1703 /* Track if we malloced the SPECS array and thus must free it. */
1704 bool specs_malloced = false;
1706 /* Array with information about the needed arguments. This has to
1707 be dynamically extensible. */
1708 size_t nspecs = 0;
1709 /* A more or less arbitrary start value. */
1710 size_t nspecs_size = 32 * sizeof (struct printf_spec);
1712 specs = alloca (nspecs_size);
1713 /* The number of arguments the format string requests. This will
1714 determine the size of the array needed to store the argument
1715 attributes. */
1716 size_t nargs = 0;
1717 size_t bytes_per_arg;
1718 union printf_arg *args_value;
1719 int *args_size;
1720 int *args_type;
1722 /* Positional parameters refer to arguments directly. This could
1723 also determine the maximum number of arguments. Track the
1724 maximum number. */
1725 size_t max_ref_arg = 0;
1727 /* Just a counter. */
1728 size_t cnt;
1730 CHAR_T *workstart = NULL;
1732 if (grouping == (const char *) -1)
1734 #ifdef COMPILE_WPRINTF
1735 thousands_sep = _NL_CURRENT_WORD (LC_NUMERIC,
1736 _NL_NUMERIC_THOUSANDS_SEP_WC);
1737 #else
1738 thousands_sep = _NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP);
1739 #endif
1741 grouping = _NL_CURRENT (LC_NUMERIC, GROUPING);
1742 if (*grouping == '\0' || *grouping == CHAR_MAX)
1743 grouping = NULL;
1746 for (const UCHAR_T *f = lead_str_end; *f != L_('\0');
1747 f = specs[nspecs++].next_fmt)
1749 if (nspecs * sizeof (*specs) >= nspecs_size)
1751 /* Extend the array of format specifiers. */
1752 if (nspecs_size * 2 < nspecs_size)
1754 __set_errno (ENOMEM);
1755 done = -1;
1756 goto all_done;
1758 struct printf_spec *old = specs;
1759 if (__libc_use_alloca (2 * nspecs_size))
1760 specs = extend_alloca (specs, nspecs_size, 2 * nspecs_size);
1761 else
1763 nspecs_size *= 2;
1764 specs = malloc (nspecs_size);
1765 if (specs == NULL)
1767 __set_errno (ENOMEM);
1768 specs = old;
1769 done = -1;
1770 goto all_done;
1774 /* Copy the old array's elements to the new space. */
1775 memmove (specs, old, nspecs * sizeof (*specs));
1777 /* If we had previously malloc'd space for SPECS, then
1778 release it after the copy is complete. */
1779 if (specs_malloced)
1780 free (old);
1782 /* Now set SPECS_MALLOCED if needed. */
1783 if (!__libc_use_alloca (nspecs_size))
1784 specs_malloced = true;
1787 /* Parse the format specifier. */
1788 #ifdef COMPILE_WPRINTF
1789 nargs += __parse_one_specwc (f, nargs, &specs[nspecs], &max_ref_arg);
1790 #else
1791 nargs += __parse_one_specmb (f, nargs, &specs[nspecs], &max_ref_arg);
1792 #endif
1795 /* Determine the number of arguments the format string consumes. */
1796 nargs = MAX (nargs, max_ref_arg);
1797 /* Calculate total size needed to represent a single argument across
1798 all three argument-related arrays. */
1799 bytes_per_arg = (sizeof (*args_value) + sizeof (*args_size)
1800 + sizeof (*args_type));
1802 /* Check for potential integer overflow. */
1803 if (__glibc_unlikely (nargs > INT_MAX / bytes_per_arg))
1805 __set_errno (EOVERFLOW);
1806 done = -1;
1807 goto all_done;
1810 /* Allocate memory for all three argument arrays. */
1811 if (__libc_use_alloca (nargs * bytes_per_arg))
1812 args_value = alloca (nargs * bytes_per_arg);
1813 else
1815 args_value = args_malloced = malloc (nargs * bytes_per_arg);
1816 if (args_value == NULL)
1818 done = -1;
1819 goto all_done;
1823 /* Set up the remaining two arrays to each point past the end of the
1824 prior array, since space for all three has been allocated now. */
1825 args_size = &args_value[nargs].pa_int;
1826 args_type = &args_size[nargs];
1827 memset (args_type, s->_flags2 & _IO_FLAGS2_FORTIFY ? '\xff' : '\0',
1828 nargs * sizeof (*args_type));
1830 /* XXX Could do sanity check here: If any element in ARGS_TYPE is
1831 still zero after this loop, format is invalid. For now we
1832 simply use 0 as the value. */
1834 /* Fill in the types of all the arguments. */
1835 for (cnt = 0; cnt < nspecs; ++cnt)
1837 /* If the width is determined by an argument this is an int. */
1838 if (specs[cnt].width_arg != -1)
1839 args_type[specs[cnt].width_arg] = PA_INT;
1841 /* If the precision is determined by an argument this is an int. */
1842 if (specs[cnt].prec_arg != -1)
1843 args_type[specs[cnt].prec_arg] = PA_INT;
1845 switch (specs[cnt].ndata_args)
1847 case 0: /* No arguments. */
1848 break;
1849 case 1: /* One argument; we already have the
1850 type and size. */
1851 args_type[specs[cnt].data_arg] = specs[cnt].data_arg_type;
1852 args_size[specs[cnt].data_arg] = specs[cnt].size;
1853 break;
1854 default:
1855 /* We have more than one argument for this format spec.
1856 We must call the arginfo function again to determine
1857 all the types. */
1858 (void) (*__printf_arginfo_table[specs[cnt].info.spec])
1859 (&specs[cnt].info,
1860 specs[cnt].ndata_args, &args_type[specs[cnt].data_arg],
1861 &args_size[specs[cnt].data_arg]);
1862 break;
1866 /* Now we know all the types and the order. Fill in the argument
1867 values. */
1868 for (cnt = 0; cnt < nargs; ++cnt)
1869 switch (args_type[cnt])
1871 #define T(tag, mem, type) \
1872 case tag: \
1873 args_value[cnt].mem = va_arg (*ap_savep, type); \
1874 break
1876 T (PA_WCHAR, pa_wchar, wint_t);
1877 case PA_CHAR: /* Promoted. */
1878 case PA_INT|PA_FLAG_SHORT: /* Promoted. */
1879 #if LONG_MAX == INT_MAX
1880 case PA_INT|PA_FLAG_LONG:
1881 #endif
1882 T (PA_INT, pa_int, int);
1883 #if LONG_MAX == LONG_LONG_MAX
1884 case PA_INT|PA_FLAG_LONG:
1885 #endif
1886 T (PA_INT|PA_FLAG_LONG_LONG, pa_long_long_int, long long int);
1887 #if LONG_MAX != INT_MAX && LONG_MAX != LONG_LONG_MAX
1888 # error "he?"
1889 #endif
1890 case PA_FLOAT: /* Promoted. */
1891 T (PA_DOUBLE, pa_double, double);
1892 case PA_DOUBLE|PA_FLAG_LONG_DOUBLE:
1893 if (__ldbl_is_dbl)
1895 args_value[cnt].pa_double = va_arg (*ap_savep, double);
1896 args_type[cnt] &= ~PA_FLAG_LONG_DOUBLE;
1898 else
1899 args_value[cnt].pa_long_double = va_arg (*ap_savep, long double);
1900 break;
1901 case PA_STRING: /* All pointers are the same */
1902 case PA_WSTRING: /* All pointers are the same */
1903 T (PA_POINTER, pa_pointer, void *);
1904 #undef T
1905 default:
1906 if ((args_type[cnt] & PA_FLAG_PTR) != 0)
1907 args_value[cnt].pa_pointer = va_arg (*ap_savep, void *);
1908 else if (__glibc_unlikely (__printf_va_arg_table != NULL)
1909 && __printf_va_arg_table[args_type[cnt] - PA_LAST] != NULL)
1911 args_value[cnt].pa_user = alloca (args_size[cnt]);
1912 (*__printf_va_arg_table[args_type[cnt] - PA_LAST])
1913 (args_value[cnt].pa_user, ap_savep);
1915 else
1916 args_value[cnt].pa_long_double = 0.0;
1917 break;
1918 case -1:
1919 /* Error case. Not all parameters appear in N$ format
1920 strings. We have no way to determine their type. */
1921 assert (s->_flags2 & _IO_FLAGS2_FORTIFY);
1922 __libc_fatal ("*** invalid %N$ use detected ***\n");
1925 /* Now walk through all format specifiers and process them. */
1926 for (; (size_t) nspecs_done < nspecs; ++nspecs_done)
1928 STEP4_TABLE;
1930 int is_negative;
1931 union
1933 unsigned long long int longlong;
1934 unsigned long int word;
1935 } number;
1936 int base;
1937 union printf_arg the_arg;
1938 CHAR_T *string; /* Pointer to argument string. */
1940 /* Fill variables from values in struct. */
1941 int alt = specs[nspecs_done].info.alt;
1942 int space = specs[nspecs_done].info.space;
1943 int left = specs[nspecs_done].info.left;
1944 int showsign = specs[nspecs_done].info.showsign;
1945 int group = specs[nspecs_done].info.group;
1946 int is_long_double = specs[nspecs_done].info.is_long_double;
1947 int is_short = specs[nspecs_done].info.is_short;
1948 int is_char = specs[nspecs_done].info.is_char;
1949 int is_long = specs[nspecs_done].info.is_long;
1950 int width = specs[nspecs_done].info.width;
1951 int prec = specs[nspecs_done].info.prec;
1952 int use_outdigits = specs[nspecs_done].info.i18n;
1953 char pad = specs[nspecs_done].info.pad;
1954 CHAR_T spec = specs[nspecs_done].info.spec;
1956 workstart = NULL;
1957 CHAR_T *workend = work_buffer + WORK_BUFFER_SIZE;
1959 /* Fill in last information. */
1960 if (specs[nspecs_done].width_arg != -1)
1962 /* Extract the field width from an argument. */
1963 specs[nspecs_done].info.width =
1964 args_value[specs[nspecs_done].width_arg].pa_int;
1966 if (specs[nspecs_done].info.width < 0)
1967 /* If the width value is negative left justification is
1968 selected and the value is taken as being positive. */
1970 specs[nspecs_done].info.width *= -1;
1971 left = specs[nspecs_done].info.left = 1;
1973 width = specs[nspecs_done].info.width;
1976 if (specs[nspecs_done].prec_arg != -1)
1978 /* Extract the precision from an argument. */
1979 specs[nspecs_done].info.prec =
1980 args_value[specs[nspecs_done].prec_arg].pa_int;
1982 if (specs[nspecs_done].info.prec < 0)
1983 /* If the precision is negative the precision is
1984 omitted. */
1985 specs[nspecs_done].info.prec = -1;
1987 prec = specs[nspecs_done].info.prec;
1990 /* Maybe the buffer is too small. */
1991 if (MAX (prec, width) + 32 > WORK_BUFFER_SIZE)
1993 if (__libc_use_alloca ((MAX (prec, width) + 32)
1994 * sizeof (CHAR_T)))
1995 workend = ((CHAR_T *) alloca ((MAX (prec, width) + 32)
1996 * sizeof (CHAR_T))
1997 + (MAX (prec, width) + 32));
1998 else
2000 workstart = (CHAR_T *) malloc ((MAX (prec, width) + 32)
2001 * sizeof (CHAR_T));
2002 if (workstart == NULL)
2004 done = -1;
2005 goto all_done;
2007 workend = workstart + (MAX (prec, width) + 32);
2011 /* Process format specifiers. */
2012 while (1)
2014 extern printf_function **__printf_function_table;
2015 int function_done;
2017 if (spec <= UCHAR_MAX
2018 && __printf_function_table != NULL
2019 && __printf_function_table[(size_t) spec] != NULL)
2021 const void **ptr = alloca (specs[nspecs_done].ndata_args
2022 * sizeof (const void *));
2024 /* Fill in an array of pointers to the argument values. */
2025 for (unsigned int i = 0; i < specs[nspecs_done].ndata_args;
2026 ++i)
2027 ptr[i] = &args_value[specs[nspecs_done].data_arg + i];
2029 /* Call the function. */
2030 function_done = __printf_function_table[(size_t) spec]
2031 (s, &specs[nspecs_done].info, ptr);
2033 if (function_done != -2)
2035 /* If an error occurred we don't have information
2036 about # of chars. */
2037 if (function_done < 0)
2039 /* Function has set errno. */
2040 done = -1;
2041 goto all_done;
2044 done_add (function_done);
2045 break;
2049 JUMP (spec, step4_jumps);
2051 process_arg ((&specs[nspecs_done]));
2052 process_string_arg ((&specs[nspecs_done]));
2054 LABEL (form_unknown):
2056 unsigned int i;
2057 const void **ptr;
2059 ptr = alloca (specs[nspecs_done].ndata_args
2060 * sizeof (const void *));
2062 /* Fill in an array of pointers to the argument values. */
2063 for (i = 0; i < specs[nspecs_done].ndata_args; ++i)
2064 ptr[i] = &args_value[specs[nspecs_done].data_arg + i];
2066 /* Call the function. */
2067 function_done = printf_unknown (s, &specs[nspecs_done].info,
2068 ptr);
2070 /* If an error occurred we don't have information about #
2071 of chars. */
2072 if (function_done < 0)
2074 /* Function has set errno. */
2075 done = -1;
2076 goto all_done;
2079 done_add (function_done);
2081 break;
2084 if (__glibc_unlikely (workstart != NULL))
2085 free (workstart);
2086 workstart = NULL;
2088 /* Write the following constant string. */
2089 outstring (specs[nspecs_done].end_of_fmt,
2090 specs[nspecs_done].next_fmt
2091 - specs[nspecs_done].end_of_fmt);
2093 all_done:
2094 if (__glibc_unlikely (workstart != NULL))
2095 free (workstart);
2096 return done;
2098 \f
2099 /* Handle an unknown format specifier. This prints out a canonicalized
2100 representation of the format spec itself. */
2101 static int
2102 printf_unknown (FILE *s, const struct printf_info *info,
2103 const void *const *args)
2106 int done = 0;
2107 CHAR_T work_buffer[MAX (sizeof (info->width), sizeof (info->prec)) * 3];
2108 CHAR_T *const workend
2109 = &work_buffer[sizeof (work_buffer) / sizeof (CHAR_T)];
2110 CHAR_T *w;
2112 outchar (L_('%'));
2114 if (info->alt)
2115 outchar (L_('#'));
2116 if (info->group)
2117 outchar (L_('\''));
2118 if (info->showsign)
2119 outchar (L_('+'));
2120 else if (info->space)
2121 outchar (L_(' '));
2122 if (info->left)
2123 outchar (L_('-'));
2124 if (info->pad == L_('0'))
2125 outchar (L_('0'));
2126 if (info->i18n)
2127 outchar (L_('I'));
2129 if (info->width != 0)
2131 w = _itoa_word (info->width, workend, 10, 0);
2132 while (w < workend)
2133 outchar (*w++);
2136 if (info->prec != -1)
2138 outchar (L_('.'));
2139 w = _itoa_word (info->prec, workend, 10, 0);
2140 while (w < workend)
2141 outchar (*w++);
2144 if (info->spec != L_('\0'))
2145 outchar (info->spec);
2147 all_done:
2148 return done;
2150 \f
2151 /* Group the digits according to the grouping rules of the current locale.
2152 The interpretation of GROUPING is as in `struct lconv' from <locale.h>. */
2153 static CHAR_T *
2154 internal_function
2155 group_number (CHAR_T *w, CHAR_T *rear_ptr, const char *grouping,
2156 THOUSANDS_SEP_T thousands_sep)
2158 int len;
2159 CHAR_T *src, *s;
2160 #ifndef COMPILE_WPRINTF
2161 int tlen = strlen (thousands_sep);
2162 #endif
2164 /* We treat all negative values like CHAR_MAX. */
2166 if (*grouping == CHAR_MAX || *grouping <= 0)
2167 /* No grouping should be done. */
2168 return w;
2170 len = *grouping++;
2172 /* Copy existing string so that nothing gets overwritten. */
2173 src = (CHAR_T *) alloca ((rear_ptr - w) * sizeof (CHAR_T));
2174 s = (CHAR_T *) __mempcpy (src, w,
2175 (rear_ptr - w) * sizeof (CHAR_T));
2176 w = rear_ptr;
2178 /* Process all characters in the string. */
2179 while (s > src)
2181 *--w = *--s;
2183 if (--len == 0 && s > src)
2185 /* A new group begins. */
2186 #ifdef COMPILE_WPRINTF
2187 *--w = thousands_sep;
2188 #else
2189 int cnt = tlen;
2190 do
2191 *--w = thousands_sep[--cnt];
2192 while (cnt > 0);
2193 #endif
2195 if (*grouping == CHAR_MAX
2196 #if CHAR_MIN < 0
2197 || *grouping < 0
2198 #endif
2201 /* No further grouping to be done.
2202 Copy the rest of the number. */
2203 do
2204 *--w = *--s;
2205 while (s > src);
2206 break;
2208 else if (*grouping != '\0')
2209 /* The previous grouping repeats ad infinitum. */
2210 len = *grouping++;
2211 else
2212 len = grouping[-1];
2215 return w;
2217 \f
2218 /* Helper "class" for `fprintf to unbuffered': creates a temporary buffer. */
2219 struct helper_file
2221 struct _IO_FILE_plus _f;
2222 #ifdef COMPILE_WPRINTF
2223 struct _IO_wide_data _wide_data;
2224 #endif
2225 _IO_FILE *_put_stream;
2226 #ifdef _IO_MTSAFE_IO
2227 _IO_lock_t lock;
2228 #endif
2229 };
2231 static int
2232 _IO_helper_overflow (_IO_FILE *s, int c)
2234 _IO_FILE *target = ((struct helper_file*) s)->_put_stream;
2235 #ifdef COMPILE_WPRINTF
2236 int used = s->_wide_data->_IO_write_ptr - s->_wide_data->_IO_write_base;
2237 if (used)
2239 _IO_size_t written = _IO_sputn (target, s->_wide_data->_IO_write_base,
2240 used);
2241 if (written == 0 || written == WEOF)
2242 return WEOF;
2243 __wmemmove (s->_wide_data->_IO_write_base,
2244 s->_wide_data->_IO_write_base + written,
2245 used - written);
2246 s->_wide_data->_IO_write_ptr -= written;
2248 #else
2249 int used = s->_IO_write_ptr - s->_IO_write_base;
2250 if (used)
2252 _IO_size_t written = _IO_sputn (target, s->_IO_write_base, used);
2253 if (written == 0 || written == EOF)
2254 return EOF;
2255 memmove (s->_IO_write_base, s->_IO_write_base + written,
2256 used - written);
2257 s->_IO_write_ptr -= written;
2259 #endif
2260 return PUTC (c, s);
2263 #ifdef COMPILE_WPRINTF
2264 static const struct _IO_jump_t _IO_helper_jumps =
2266 JUMP_INIT_DUMMY,
2267 JUMP_INIT (finish, _IO_wdefault_finish),
2268 JUMP_INIT (overflow, _IO_helper_overflow),
2269 JUMP_INIT (underflow, _IO_default_underflow),
2270 JUMP_INIT (uflow, _IO_default_uflow),
2271 JUMP_INIT (pbackfail, (_IO_pbackfail_t) _IO_wdefault_pbackfail),
2272 JUMP_INIT (xsputn, _IO_wdefault_xsputn),
2273 JUMP_INIT (xsgetn, _IO_wdefault_xsgetn),
2274 JUMP_INIT (seekoff, _IO_default_seekoff),
2275 JUMP_INIT (seekpos, _IO_default_seekpos),
2276 JUMP_INIT (setbuf, _IO_default_setbuf),
2277 JUMP_INIT (sync, _IO_default_sync),
2278 JUMP_INIT (doallocate, _IO_wdefault_doallocate),
2279 JUMP_INIT (read, _IO_default_read),
2280 JUMP_INIT (write, _IO_default_write),
2281 JUMP_INIT (seek, _IO_default_seek),
2282 JUMP_INIT (close, _IO_default_close),
2283 JUMP_INIT (stat, _IO_default_stat)
2284 };
2285 #else
2286 static const struct _IO_jump_t _IO_helper_jumps =
2288 JUMP_INIT_DUMMY,
2289 JUMP_INIT (finish, _IO_default_finish),
2290 JUMP_INIT (overflow, _IO_helper_overflow),
2291 JUMP_INIT (underflow, _IO_default_underflow),
2292 JUMP_INIT (uflow, _IO_default_uflow),
2293 JUMP_INIT (pbackfail, _IO_default_pbackfail),
2294 JUMP_INIT (xsputn, _IO_default_xsputn),
2295 JUMP_INIT (xsgetn, _IO_default_xsgetn),
2296 JUMP_INIT (seekoff, _IO_default_seekoff),
2297 JUMP_INIT (seekpos, _IO_default_seekpos),
2298 JUMP_INIT (setbuf, _IO_default_setbuf),
2299 JUMP_INIT (sync, _IO_default_sync),
2300 JUMP_INIT (doallocate, _IO_default_doallocate),
2301 JUMP_INIT (read, _IO_default_read),
2302 JUMP_INIT (write, _IO_default_write),
2303 JUMP_INIT (seek, _IO_default_seek),
2304 JUMP_INIT (close, _IO_default_close),
2305 JUMP_INIT (stat, _IO_default_stat)
2306 };
2307 #endif
2309 static int
2310 internal_function
2311 buffered_vfprintf (_IO_FILE *s, const CHAR_T *format,
2312 _IO_va_list args)
2314 CHAR_T buf[_IO_BUFSIZ];
2315 struct helper_file helper;
2316 _IO_FILE *hp = (_IO_FILE *) &helper._f;
2317 int result, to_flush;
2319 /* Orient the stream. */
2320 #ifdef ORIENT
2321 ORIENT;
2322 #endif
2324 /* Initialize helper. */
2325 helper._put_stream = s;
2326 #ifdef COMPILE_WPRINTF
2327 hp->_wide_data = &helper._wide_data;
2328 _IO_wsetp (hp, buf, buf + sizeof buf / sizeof (CHAR_T));
2329 hp->_mode = 1;
2330 #else
2331 _IO_setp (hp, buf, buf + sizeof buf);
2332 hp->_mode = -1;
2333 #endif
2334 hp->_IO_file_flags = _IO_MAGIC|_IO_NO_READS|_IO_USER_LOCK;
2335 #if _IO_JUMPS_OFFSET
2336 hp->_vtable_offset = 0;
2337 #endif
2338 #ifdef _IO_MTSAFE_IO
2339 hp->_lock = NULL;
2340 #endif
2341 hp->_flags2 = s->_flags2;
2342 _IO_JUMPS (&helper._f) = (struct _IO_jump_t *) &_IO_helper_jumps;
2344 /* Now print to helper instead. */
2345 #ifndef COMPILE_WPRINTF
2346 result = _IO_vfprintf (hp, format, args);
2347 #else
2348 result = vfprintf (hp, format, args);
2349 #endif
2351 /* Lock stream. */
2352 __libc_cleanup_region_start (1, (void (*) (void *)) &_IO_funlockfile, s);
2353 _IO_flockfile (s);
2355 /* Now flush anything from the helper to the S. */
2356 #ifdef COMPILE_WPRINTF
2357 if ((to_flush = (hp->_wide_data->_IO_write_ptr
2358 - hp->_wide_data->_IO_write_base)) > 0)
2360 if ((int) _IO_sputn (s, hp->_wide_data->_IO_write_base, to_flush)
2361 != to_flush)
2362 result = -1;
2364 #else
2365 if ((to_flush = hp->_IO_write_ptr - hp->_IO_write_base) > 0)
2367 if ((int) _IO_sputn (s, hp->_IO_write_base, to_flush) != to_flush)
2368 result = -1;
2370 #endif
2372 /* Unlock the stream. */
2373 _IO_funlockfile (s);
2374 __libc_cleanup_region_end (0);
2376 return result;
2379 #undef vfprintf
2380 #ifdef COMPILE_WPRINTF
2381 strong_alias (_IO_vfwprintf, __vfwprintf);
2382 ldbl_weak_alias (_IO_vfwprintf, vfwprintf);
2383 #else
2384 ldbl_strong_alias (_IO_vfprintf_internal, vfprintf);
2385 ldbl_hidden_def (_IO_vfprintf_internal, vfprintf)
2386 ldbl_strong_alias (_IO_vfprintf_internal, _IO_vfprintf);
2387 ldbl_hidden_def (_IO_vfprintf_internal, _IO_vfprintf)
2388 #endif