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[glibc.git] / stdio-common / vfprintf.c
bloba41449d26874ef313d86163db6f60c353bf0f69e
1 /* Copyright (C) 1991-2015 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <http://www.gnu.org/licenses/>. */
17
18 #include <ctype.h>
19 #include <limits.h>
20 #include <printf.h>
21 #include <stdarg.h>
22 #include <stdint.h>
23 #include <stdlib.h>
24 #include <string.h>
25 #include <errno.h>
26 #include <wchar.h>
27 #include <bits/libc-lock.h>
28 #include <sys/param.h>
29 #include <_itoa.h>
30 #include <locale/localeinfo.h>
31 #include <stdio.h>
32
33 /* This code is shared between the standard stdio implementation found
34 in GNU C library and the libio implementation originally found in
35 GNU libg++.
36
37 Beside this it is also shared between the normal and wide character
38 implementation as defined in ISO/IEC 9899:1990/Amendment 1:1995. */
39
40
41 #include <libioP.h>
42 #define FILE _IO_FILE
43 #undef va_list
44 #define va_list _IO_va_list
45 #undef BUFSIZ
46 #define BUFSIZ _IO_BUFSIZ
47 #define ARGCHECK(S, Format) \
48 do \
49 { \
50 /* Check file argument for consistence. */ \
51 CHECK_FILE (S, -1); \
52 if (S->_flags & _IO_NO_WRITES) \
53 { \
54 S->_flags |= _IO_ERR_SEEN; \
55 __set_errno (EBADF); \
56 return -1; \
57 } \
58 if (Format == NULL) \
59 { \
60 MAYBE_SET_EINVAL; \
61 return -1; \
62 } \
63 } while (0)
64 #define UNBUFFERED_P(S) ((S)->_IO_file_flags & _IO_UNBUFFERED)
65
66 #define done_add(val) \
67 do { \
68 unsigned int _val = val; \
69 assert ((unsigned int) done < (unsigned int) INT_MAX); \
70 if (__glibc_unlikely (INT_MAX - done < _val)) \
71 { \
72 done = -1; \
73 __set_errno (EOVERFLOW); \
74 goto all_done; \
75 } \
76 done += _val; \
77 } while (0)
78
79 #ifndef COMPILE_WPRINTF
80 # define vfprintf _IO_vfprintf_internal
81 # define CHAR_T char
82 # define UCHAR_T unsigned char
83 # define INT_T int
84 # define L_(Str) Str
85 # define ISDIGIT(Ch) ((unsigned int) ((Ch) - '0') < 10)
86 # define STR_LEN(Str) strlen (Str)
87
88 # define PUT(F, S, N) _IO_sputn ((F), (S), (N))
89 # define PAD(Padchar) \
90 do { \
91 if (width > 0) \
92 { \
93 _IO_ssize_t written = _IO_padn (s, (Padchar), width); \
94 if (__glibc_unlikely (written != width)) \
95 { \
96 done = -1; \
97 goto all_done; \
98 } \
99 done_add (written); \
100 } \
101 } while (0)
102 # define PUTC(C, F) _IO_putc_unlocked (C, F)
103 # define ORIENT if (_IO_vtable_offset (s) == 0 && _IO_fwide (s, -1) != -1)\
104 return -1
105 #else
106 # define vfprintf _IO_vfwprintf
107 # define CHAR_T wchar_t
108 /* This is a hack!!! There should be a type uwchar_t. */
109 # define UCHAR_T unsigned int /* uwchar_t */
110 # define INT_T wint_t
111 # define L_(Str) L##Str
112 # define ISDIGIT(Ch) ((unsigned int) ((Ch) - L'0') < 10)
113 # define STR_LEN(Str) __wcslen (Str)
114
115 # include <_itowa.h>
116
117 # define PUT(F, S, N) _IO_sputn ((F), (S), (N))
118 # define PAD(Padchar) \
119 do { \
120 if (width > 0) \
121 { \
122 _IO_ssize_t written = _IO_wpadn (s, (Padchar), width); \
123 if (__glibc_unlikely (written != width)) \
124 { \
125 done = -1; \
126 goto all_done; \
127 } \
128 done_add (written); \
129 } \
130 } while (0)
131 # define PUTC(C, F) _IO_putwc_unlocked (C, F)
132 # define ORIENT if (_IO_fwide (s, 1) != 1) return -1
133
134 # undef _itoa
135 # define _itoa(Val, Buf, Base, Case) _itowa (Val, Buf, Base, Case)
136 # define _itoa_word(Val, Buf, Base, Case) _itowa_word (Val, Buf, Base, Case)
137 # undef EOF
138 # define EOF WEOF
139 #endif
140
141 #include "_i18n_number.h"
142
143 /* Include the shared code for parsing the format string. */
144 #include "printf-parse.h"
145
146
147 #define outchar(Ch) \
148 do \
149 { \
150 const INT_T outc = (Ch); \
151 if (PUTC (outc, s) == EOF || done == INT_MAX) \
152 { \
153 done = -1; \
154 goto all_done; \
155 } \
156 ++done; \
157 } \
158 while (0)
159
160 #define outstring(String, Len) \
161 do \
162 { \
163 assert ((size_t) done <= (size_t) INT_MAX); \
164 if ((size_t) PUT (s, (String), (Len)) != (size_t) (Len)) \
165 { \
166 done = -1; \
167 goto all_done; \
168 } \
169 if (__glibc_unlikely (INT_MAX - done < (Len))) \
170 { \
171 done = -1; \
172 __set_errno (EOVERFLOW); \
173 goto all_done; \
174 } \
175 done += (Len); \
176 } \
177 while (0)
178
179 /* For handling long_double and longlong we use the same flag. If
180 `long' and `long long' are effectively the same type define it to
181 zero. */
182 #if LONG_MAX == LONG_LONG_MAX
183 # define is_longlong 0
184 #else
185 # define is_longlong is_long_double
186 #endif
187
188 /* If `long' and `int' is effectively the same type we don't have to
189 handle `long separately. */
190 #if INT_MAX == LONG_MAX
191 # define is_long_num 0
192 #else
193 # define is_long_num is_long
194 #endif
195
196
197 /* Global variables. */
198 static const CHAR_T null[] = L_("(null)");
199
200
201 /* Helper function to provide temporary buffering for unbuffered streams. */
202 static int buffered_vfprintf (FILE *stream, const CHAR_T *fmt, va_list)
203 __THROW __attribute__ ((noinline)) internal_function;
204
205 /* Handle unknown format specifier. */
206 static int printf_unknown (FILE *, const struct printf_info *,
207 const void *const *) __THROW;
208
209 /* Group digits of number string. */
210 #ifdef COMPILE_WPRINTF
211 static CHAR_T *group_number (CHAR_T *, CHAR_T *, const char *, wchar_t)
212 __THROW internal_function;
213 #else
214 static CHAR_T *group_number (CHAR_T *, CHAR_T *, const char *, const char *)
215 __THROW internal_function;
216 #endif
217
218
219 /* The function itself. */
220 int
221 vfprintf (FILE *s, const CHAR_T *format, va_list ap)
222 {
223 /* The character used as thousands separator. */
224 #ifdef COMPILE_WPRINTF
225 wchar_t thousands_sep = L'\0';
226 #else
227 const char *thousands_sep = NULL;
228 #endif
229
230 /* The string describing the size of groups of digits. */
231 const char *grouping;
232
233 /* Place to accumulate the result. */
234 int done;
235
236 /* Current character in format string. */
237 const UCHAR_T *f;
238
239 /* End of leading constant string. */
240 const UCHAR_T *lead_str_end;
241
242 /* Points to next format specifier. */
243 const UCHAR_T *end_of_spec;
244
245 /* Buffer intermediate results. */
246 CHAR_T work_buffer[1000];
247 CHAR_T *workstart = NULL;
248 CHAR_T *workend;
249
250 /* We have to save the original argument pointer. */
251 va_list ap_save;
252
253 /* Count number of specifiers we already processed. */
254 int nspecs_done;
255
256 /* For the %m format we may need the current `errno' value. */
257 int save_errno = errno;
258
259 /* 1 if format is in read-only memory, -1 if it is in writable memory,
260 0 if unknown. */
261 int readonly_format = 0;
262
263 /* For the argument descriptions, which may be allocated on the heap. */
264 void *args_malloced = NULL;
265
266 /* For positional argument handling. */
267 struct printf_spec *specs;
268
269 /* Track if we malloced the SPECS array and thus must free it. */
270 bool specs_malloced = false;
271
272 /* This table maps a character into a number representing a
273 class. In each step there is a destination label for each
274 class. */
275 static const uint8_t jump_table[] =
276 {
277 /* ' ' */ 1, 0, 0, /* '#' */ 4,
278 0, /* '%' */ 14, 0, /* '\''*/ 6,
279 0, 0, /* '*' */ 7, /* '+' */ 2,
280 0, /* '-' */ 3, /* '.' */ 9, 0,
281 /* '0' */ 5, /* '1' */ 8, /* '2' */ 8, /* '3' */ 8,
282 /* '4' */ 8, /* '5' */ 8, /* '6' */ 8, /* '7' */ 8,
283 /* '8' */ 8, /* '9' */ 8, 0, 0,
284 0, 0, 0, 0,
285 0, /* 'A' */ 26, 0, /* 'C' */ 25,
286 0, /* 'E' */ 19, /* F */ 19, /* 'G' */ 19,
287 0, /* 'I' */ 29, 0, 0,
288 /* 'L' */ 12, 0, 0, 0,
289 0, 0, 0, /* 'S' */ 21,
290 0, 0, 0, 0,
291 /* 'X' */ 18, 0, /* 'Z' */ 13, 0,
292 0, 0, 0, 0,
293 0, /* 'a' */ 26, 0, /* 'c' */ 20,
294 /* 'd' */ 15, /* 'e' */ 19, /* 'f' */ 19, /* 'g' */ 19,
295 /* 'h' */ 10, /* 'i' */ 15, /* 'j' */ 28, 0,
296 /* 'l' */ 11, /* 'm' */ 24, /* 'n' */ 23, /* 'o' */ 17,
297 /* 'p' */ 22, /* 'q' */ 12, 0, /* 's' */ 21,
298 /* 't' */ 27, /* 'u' */ 16, 0, 0,
299 /* 'x' */ 18, 0, /* 'z' */ 13
300 };
301
302 #define NOT_IN_JUMP_RANGE(Ch) ((Ch) < L_(' ') || (Ch) > L_('z'))
303 #define CHAR_CLASS(Ch) (jump_table[(INT_T) (Ch) - L_(' ')])
304 #ifdef SHARED
305 /* 'int' is enough and it saves some space on 64 bit systems. */
306 # define JUMP_TABLE_TYPE const int
307 # define JUMP(ChExpr, table) \
308 do \
309 { \
310 int offset; \
311 void *ptr; \
312 spec = (ChExpr); \
313 offset = NOT_IN_JUMP_RANGE (spec) ? REF (form_unknown) \
314 : table[CHAR_CLASS (spec)]; \
315 ptr = &&do_form_unknown + offset; \
316 goto *ptr; \
317 } \
318 while (0)
319 #else
320 # define JUMP_TABLE_TYPE const void *const
321 # define JUMP(ChExpr, table) \
322 do \
323 { \
324 const void *ptr; \
325 spec = (ChExpr); \
326 ptr = NOT_IN_JUMP_RANGE (spec) ? REF (form_unknown) \
327 : table[CHAR_CLASS (spec)]; \
328 goto *ptr; \
329 } \
330 while (0)
331 #endif
332
333 #define STEP0_3_TABLE \
334 /* Step 0: at the beginning. */ \
335 static JUMP_TABLE_TYPE step0_jumps[30] = \
336 { \
337 REF (form_unknown), \
338 REF (flag_space), /* for ' ' */ \
339 REF (flag_plus), /* for '+' */ \
340 REF (flag_minus), /* for '-' */ \
341 REF (flag_hash), /* for '<hash>' */ \
342 REF (flag_zero), /* for '0' */ \
343 REF (flag_quote), /* for '\'' */ \
344 REF (width_asterics), /* for '*' */ \
345 REF (width), /* for '1'...'9' */ \
346 REF (precision), /* for '.' */ \
347 REF (mod_half), /* for 'h' */ \
348 REF (mod_long), /* for 'l' */ \
349 REF (mod_longlong), /* for 'L', 'q' */ \
350 REF (mod_size_t), /* for 'z', 'Z' */ \
351 REF (form_percent), /* for '%' */ \
352 REF (form_integer), /* for 'd', 'i' */ \
353 REF (form_unsigned), /* for 'u' */ \
354 REF (form_octal), /* for 'o' */ \
355 REF (form_hexa), /* for 'X', 'x' */ \
356 REF (form_float), /* for 'E', 'e', 'F', 'f', 'G', 'g' */ \
357 REF (form_character), /* for 'c' */ \
358 REF (form_string), /* for 's', 'S' */ \
359 REF (form_pointer), /* for 'p' */ \
360 REF (form_number), /* for 'n' */ \
361 REF (form_strerror), /* for 'm' */ \
362 REF (form_wcharacter), /* for 'C' */ \
363 REF (form_floathex), /* for 'A', 'a' */ \
364 REF (mod_ptrdiff_t), /* for 't' */ \
365 REF (mod_intmax_t), /* for 'j' */ \
366 REF (flag_i18n), /* for 'I' */ \
367 }; \
368 /* Step 1: after processing width. */ \
369 static JUMP_TABLE_TYPE step1_jumps[30] = \
370 { \
371 REF (form_unknown), \
372 REF (form_unknown), /* for ' ' */ \
373 REF (form_unknown), /* for '+' */ \
374 REF (form_unknown), /* for '-' */ \
375 REF (form_unknown), /* for '<hash>' */ \
376 REF (form_unknown), /* for '0' */ \
377 REF (form_unknown), /* for '\'' */ \
378 REF (form_unknown), /* for '*' */ \
379 REF (form_unknown), /* for '1'...'9' */ \
380 REF (precision), /* for '.' */ \
381 REF (mod_half), /* for 'h' */ \
382 REF (mod_long), /* for 'l' */ \
383 REF (mod_longlong), /* for 'L', 'q' */ \
384 REF (mod_size_t), /* for 'z', 'Z' */ \
385 REF (form_percent), /* for '%' */ \
386 REF (form_integer), /* for 'd', 'i' */ \
387 REF (form_unsigned), /* for 'u' */ \
388 REF (form_octal), /* for 'o' */ \
389 REF (form_hexa), /* for 'X', 'x' */ \
390 REF (form_float), /* for 'E', 'e', 'F', 'f', 'G', 'g' */ \
391 REF (form_character), /* for 'c' */ \
392 REF (form_string), /* for 's', 'S' */ \
393 REF (form_pointer), /* for 'p' */ \
394 REF (form_number), /* for 'n' */ \
395 REF (form_strerror), /* for 'm' */ \
396 REF (form_wcharacter), /* for 'C' */ \
397 REF (form_floathex), /* for 'A', 'a' */ \
398 REF (mod_ptrdiff_t), /* for 't' */ \
399 REF (mod_intmax_t), /* for 'j' */ \
400 REF (form_unknown) /* for 'I' */ \
401 }; \
402 /* Step 2: after processing precision. */ \
403 static JUMP_TABLE_TYPE step2_jumps[30] = \
404 { \
405 REF (form_unknown), \
406 REF (form_unknown), /* for ' ' */ \
407 REF (form_unknown), /* for '+' */ \
408 REF (form_unknown), /* for '-' */ \
409 REF (form_unknown), /* for '<hash>' */ \
410 REF (form_unknown), /* for '0' */ \
411 REF (form_unknown), /* for '\'' */ \
412 REF (form_unknown), /* for '*' */ \
413 REF (form_unknown), /* for '1'...'9' */ \
414 REF (form_unknown), /* for '.' */ \
415 REF (mod_half), /* for 'h' */ \
416 REF (mod_long), /* for 'l' */ \
417 REF (mod_longlong), /* for 'L', 'q' */ \
418 REF (mod_size_t), /* for 'z', 'Z' */ \
419 REF (form_percent), /* for '%' */ \
420 REF (form_integer), /* for 'd', 'i' */ \
421 REF (form_unsigned), /* for 'u' */ \
422 REF (form_octal), /* for 'o' */ \
423 REF (form_hexa), /* for 'X', 'x' */ \
424 REF (form_float), /* for 'E', 'e', 'F', 'f', 'G', 'g' */ \
425 REF (form_character), /* for 'c' */ \
426 REF (form_string), /* for 's', 'S' */ \
427 REF (form_pointer), /* for 'p' */ \
428 REF (form_number), /* for 'n' */ \
429 REF (form_strerror), /* for 'm' */ \
430 REF (form_wcharacter), /* for 'C' */ \
431 REF (form_floathex), /* for 'A', 'a' */ \
432 REF (mod_ptrdiff_t), /* for 't' */ \
433 REF (mod_intmax_t), /* for 'j' */ \
434 REF (form_unknown) /* for 'I' */ \
435 }; \
436 /* Step 3a: after processing first 'h' modifier. */ \
437 static JUMP_TABLE_TYPE step3a_jumps[30] = \
438 { \
439 REF (form_unknown), \
440 REF (form_unknown), /* for ' ' */ \
441 REF (form_unknown), /* for '+' */ \
442 REF (form_unknown), /* for '-' */ \
443 REF (form_unknown), /* for '<hash>' */ \
444 REF (form_unknown), /* for '0' */ \
445 REF (form_unknown), /* for '\'' */ \
446 REF (form_unknown), /* for '*' */ \
447 REF (form_unknown), /* for '1'...'9' */ \
448 REF (form_unknown), /* for '.' */ \
449 REF (mod_halfhalf), /* for 'h' */ \
450 REF (form_unknown), /* for 'l' */ \
451 REF (form_unknown), /* for 'L', 'q' */ \
452 REF (form_unknown), /* for 'z', 'Z' */ \
453 REF (form_percent), /* for '%' */ \
454 REF (form_integer), /* for 'd', 'i' */ \
455 REF (form_unsigned), /* for 'u' */ \
456 REF (form_octal), /* for 'o' */ \
457 REF (form_hexa), /* for 'X', 'x' */ \
458 REF (form_unknown), /* for 'E', 'e', 'F', 'f', 'G', 'g' */ \
459 REF (form_unknown), /* for 'c' */ \
460 REF (form_unknown), /* for 's', 'S' */ \
461 REF (form_unknown), /* for 'p' */ \
462 REF (form_number), /* for 'n' */ \
463 REF (form_unknown), /* for 'm' */ \
464 REF (form_unknown), /* for 'C' */ \
465 REF (form_unknown), /* for 'A', 'a' */ \
466 REF (form_unknown), /* for 't' */ \
467 REF (form_unknown), /* for 'j' */ \
468 REF (form_unknown) /* for 'I' */ \
469 }; \
470 /* Step 3b: after processing first 'l' modifier. */ \
471 static JUMP_TABLE_TYPE step3b_jumps[30] = \
472 { \
473 REF (form_unknown), \
474 REF (form_unknown), /* for ' ' */ \
475 REF (form_unknown), /* for '+' */ \
476 REF (form_unknown), /* for '-' */ \
477 REF (form_unknown), /* for '<hash>' */ \
478 REF (form_unknown), /* for '0' */ \
479 REF (form_unknown), /* for '\'' */ \
480 REF (form_unknown), /* for '*' */ \
481 REF (form_unknown), /* for '1'...'9' */ \
482 REF (form_unknown), /* for '.' */ \
483 REF (form_unknown), /* for 'h' */ \
484 REF (mod_longlong), /* for 'l' */ \
485 REF (form_unknown), /* for 'L', 'q' */ \
486 REF (form_unknown), /* for 'z', 'Z' */ \
487 REF (form_percent), /* for '%' */ \
488 REF (form_integer), /* for 'd', 'i' */ \
489 REF (form_unsigned), /* for 'u' */ \
490 REF (form_octal), /* for 'o' */ \
491 REF (form_hexa), /* for 'X', 'x' */ \
492 REF (form_float), /* for 'E', 'e', 'F', 'f', 'G', 'g' */ \
493 REF (form_character), /* for 'c' */ \
494 REF (form_string), /* for 's', 'S' */ \
495 REF (form_pointer), /* for 'p' */ \
496 REF (form_number), /* for 'n' */ \
497 REF (form_strerror), /* for 'm' */ \
498 REF (form_wcharacter), /* for 'C' */ \
499 REF (form_floathex), /* for 'A', 'a' */ \
500 REF (form_unknown), /* for 't' */ \
501 REF (form_unknown), /* for 'j' */ \
502 REF (form_unknown) /* for 'I' */ \
503 }
504
505 #define STEP4_TABLE \
506 /* Step 4: processing format specifier. */ \
507 static JUMP_TABLE_TYPE step4_jumps[30] = \
508 { \
509 REF (form_unknown), \
510 REF (form_unknown), /* for ' ' */ \
511 REF (form_unknown), /* for '+' */ \
512 REF (form_unknown), /* for '-' */ \
513 REF (form_unknown), /* for '<hash>' */ \
514 REF (form_unknown), /* for '0' */ \
515 REF (form_unknown), /* for '\'' */ \
516 REF (form_unknown), /* for '*' */ \
517 REF (form_unknown), /* for '1'...'9' */ \
518 REF (form_unknown), /* for '.' */ \
519 REF (form_unknown), /* for 'h' */ \
520 REF (form_unknown), /* for 'l' */ \
521 REF (form_unknown), /* for 'L', 'q' */ \
522 REF (form_unknown), /* for 'z', 'Z' */ \
523 REF (form_percent), /* for '%' */ \
524 REF (form_integer), /* for 'd', 'i' */ \
525 REF (form_unsigned), /* for 'u' */ \
526 REF (form_octal), /* for 'o' */ \
527 REF (form_hexa), /* for 'X', 'x' */ \
528 REF (form_float), /* for 'E', 'e', 'F', 'f', 'G', 'g' */ \
529 REF (form_character), /* for 'c' */ \
530 REF (form_string), /* for 's', 'S' */ \
531 REF (form_pointer), /* for 'p' */ \
532 REF (form_number), /* for 'n' */ \
533 REF (form_strerror), /* for 'm' */ \
534 REF (form_wcharacter), /* for 'C' */ \
535 REF (form_floathex), /* for 'A', 'a' */ \
536 REF (form_unknown), /* for 't' */ \
537 REF (form_unknown), /* for 'j' */ \
538 REF (form_unknown) /* for 'I' */ \
539 }
540
541
542 #define process_arg(fspec) \
543 /* Start real work. We know about all flags and modifiers and \
544 now process the wanted format specifier. */ \
545 LABEL (form_percent): \
546 /* Write a literal "%". */ \
547 outchar (L_('%')); \
548 break; \
549 \
550 LABEL (form_integer): \
551 /* Signed decimal integer. */ \
552 base = 10; \
553 \
554 if (is_longlong) \
555 { \
556 long long int signed_number; \
557 \
558 if (fspec == NULL) \
559 signed_number = va_arg (ap, long long int); \
560 else \
561 signed_number = args_value[fspec->data_arg].pa_long_long_int; \
562 \
563 is_negative = signed_number < 0; \
564 number.longlong = is_negative ? (- signed_number) : signed_number; \
565 \
566 goto LABEL (longlong_number); \
567 } \
568 else \
569 { \
570 long int signed_number; \
571 \
572 if (fspec == NULL) \
573 { \
574 if (is_long_num) \
575 signed_number = va_arg (ap, long int); \
576 else if (is_char) \
577 signed_number = (signed char) va_arg (ap, unsigned int); \
578 else if (!is_short) \
579 signed_number = va_arg (ap, int); \
580 else \
581 signed_number = (short int) va_arg (ap, unsigned int); \
582 } \
583 else \
584 if (is_long_num) \
585 signed_number = args_value[fspec->data_arg].pa_long_int; \
586 else if (is_char) \
587 signed_number = (signed char) \
588 args_value[fspec->data_arg].pa_u_int; \
589 else if (!is_short) \
590 signed_number = args_value[fspec->data_arg].pa_int; \
591 else \
592 signed_number = (short int) \
593 args_value[fspec->data_arg].pa_u_int; \
594 \
595 is_negative = signed_number < 0; \
596 number.word = is_negative ? (- signed_number) : signed_number; \
597 \
598 goto LABEL (number); \
599 } \
600 /* NOTREACHED */ \
601 \
602 LABEL (form_unsigned): \
603 /* Unsigned decimal integer. */ \
604 base = 10; \
605 goto LABEL (unsigned_number); \
606 /* NOTREACHED */ \
607 \
608 LABEL (form_octal): \
609 /* Unsigned octal integer. */ \
610 base = 8; \
611 goto LABEL (unsigned_number); \
612 /* NOTREACHED */ \
613 \
614 LABEL (form_hexa): \
615 /* Unsigned hexadecimal integer. */ \
616 base = 16; \
617 \
618 LABEL (unsigned_number): /* Unsigned number of base BASE. */ \
619 \
620 /* ISO specifies the `+' and ` ' flags only for signed \
621 conversions. */ \
622 is_negative = 0; \
623 showsign = 0; \
624 space = 0; \
625 \
626 if (is_longlong) \
627 { \
628 if (fspec == NULL) \
629 number.longlong = va_arg (ap, unsigned long long int); \
630 else \
631 number.longlong = args_value[fspec->data_arg].pa_u_long_long_int; \
632 \
633 LABEL (longlong_number): \
634 if (prec < 0) \
635 /* Supply a default precision if none was given. */ \
636 prec = 1; \
637 else \
638 /* We have to take care for the '0' flag. If a precision \
639 is given it must be ignored. */ \
640 pad = L_(' '); \
641 \
642 /* If the precision is 0 and the number is 0 nothing has to \
643 be written for the number, except for the 'o' format in \
644 alternate form. */ \
645 if (prec == 0 && number.longlong == 0) \
646 { \
647 string = workend; \
648 if (base == 8 && alt) \
649 *--string = L_('0'); \
650 } \
651 else \
652 { \
653 /* Put the number in WORK. */ \
654 string = _itoa (number.longlong, workend, base, \
655 spec == L_('X')); \
656 if (group && grouping) \
657 string = group_number (string, workend, grouping, \
658 thousands_sep); \
659 \
660 if (use_outdigits && base == 10) \
661 string = _i18n_number_rewrite (string, workend, workend); \
662 } \
663 /* Simplify further test for num != 0. */ \
664 number.word = number.longlong != 0; \
665 } \
666 else \
667 { \
668 if (fspec == NULL) \
669 { \
670 if (is_long_num) \
671 number.word = va_arg (ap, unsigned long int); \
672 else if (is_char) \
673 number.word = (unsigned char) va_arg (ap, unsigned int); \
674 else if (!is_short) \
675 number.word = va_arg (ap, unsigned int); \
676 else \
677 number.word = (unsigned short int) va_arg (ap, unsigned int); \
678 } \
679 else \
680 if (is_long_num) \
681 number.word = args_value[fspec->data_arg].pa_u_long_int; \
682 else if (is_char) \
683 number.word = (unsigned char) \
684 args_value[fspec->data_arg].pa_u_int; \
685 else if (!is_short) \
686 number.word = args_value[fspec->data_arg].pa_u_int; \
687 else \
688 number.word = (unsigned short int) \
689 args_value[fspec->data_arg].pa_u_int; \
690 \
691 LABEL (number): \
692 if (prec < 0) \
693 /* Supply a default precision if none was given. */ \
694 prec = 1; \
695 else \
696 /* We have to take care for the '0' flag. If a precision \
697 is given it must be ignored. */ \
698 pad = L_(' '); \
699 \
700 /* If the precision is 0 and the number is 0 nothing has to \
701 be written for the number, except for the 'o' format in \
702 alternate form. */ \
703 if (prec == 0 && number.word == 0) \
704 { \
705 string = workend; \
706 if (base == 8 && alt) \
707 *--string = L_('0'); \
708 } \
709 else \
710 { \
711 /* Put the number in WORK. */ \
712 string = _itoa_word (number.word, workend, base, \
713 spec == L_('X')); \
714 if (group && grouping) \
715 string = group_number (string, workend, grouping, \
716 thousands_sep); \
717 \
718 if (use_outdigits && base == 10) \
719 string = _i18n_number_rewrite (string, workend, workend); \
720 } \
721 } \
722 \
723 if (prec <= workend - string && number.word != 0 && alt && base == 8) \
724 /* Add octal marker. */ \
725 *--string = L_('0'); \
726 \
727 prec = MAX (0, prec - (workend - string)); \
728 \
729 if (!left) \
730 { \
731 width -= workend - string + prec; \
732 \
733 if (number.word != 0 && alt && base == 16) \
734 /* Account for 0X hex marker. */ \
735 width -= 2; \
736 \
737 if (is_negative || showsign || space) \
738 --width; \
739 \
740 if (pad == L_(' ')) \
741 { \
742 PAD (L_(' ')); \
743 width = 0; \
744 } \
745 \
746 if (is_negative) \
747 outchar (L_('-')); \
748 else if (showsign) \
749 outchar (L_('+')); \
750 else if (space) \
751 outchar (L_(' ')); \
752 \
753 if (number.word != 0 && alt && base == 16) \
754 { \
755 outchar (L_('0')); \
756 outchar (spec); \
757 } \
758 \
759 width += prec; \
760 PAD (L_('0')); \
761 \
762 outstring (string, workend - string); \
763 \
764 break; \
765 } \
766 else \
767 { \
768 if (is_negative) \
769 { \
770 outchar (L_('-')); \
771 --width; \
772 } \
773 else if (showsign) \
774 { \
775 outchar (L_('+')); \
776 --width; \
777 } \
778 else if (space) \
779 { \
780 outchar (L_(' ')); \
781 --width; \
782 } \
783 \
784 if (number.word != 0 && alt && base == 16) \
785 { \
786 outchar (L_('0')); \
787 outchar (spec); \
788 width -= 2; \
789 } \
790 \
791 width -= workend - string + prec; \
792 \
793 if (prec > 0) \
794 { \
795 int temp = width; \
796 width = prec; \
797 PAD (L_('0')); \
798 width = temp; \
799 } \
800 \
801 outstring (string, workend - string); \
802 \
803 PAD (L_(' ')); \
804 break; \
805 } \
806 \
807 LABEL (form_float): \
808 { \
809 /* Floating-point number. This is handled by printf_fp.c. */ \
810 const void *ptr; \
811 int function_done; \
812 \
813 if (fspec == NULL) \
814 { \
815 if (__ldbl_is_dbl) \
816 is_long_double = 0; \
817 \
818 struct printf_info info = { .prec = prec, \
819 .width = width, \
820 .spec = spec, \
821 .is_long_double = is_long_double, \
822 .is_short = is_short, \
823 .is_long = is_long, \
824 .alt = alt, \
825 .space = space, \
826 .left = left, \
827 .showsign = showsign, \
828 .group = group, \
829 .pad = pad, \
830 .extra = 0, \
831 .i18n = use_outdigits, \
832 .wide = sizeof (CHAR_T) != 1 }; \
833 \
834 if (is_long_double) \
835 the_arg.pa_long_double = va_arg (ap, long double); \
836 else \
837 the_arg.pa_double = va_arg (ap, double); \
838 ptr = (const void *) &the_arg; \
839 \
840 function_done = __printf_fp (s, &info, &ptr); \
841 } \
842 else \
843 { \
844 ptr = (const void *) &args_value[fspec->data_arg]; \
845 if (__ldbl_is_dbl) \
846 { \
847 fspec->data_arg_type = PA_DOUBLE; \
848 fspec->info.is_long_double = 0; \
849 } \
850 \
851 function_done = __printf_fp (s, &fspec->info, &ptr); \
852 } \
853 \
854 if (function_done < 0) \
855 { \
856 /* Error in print handler; up to handler to set errno. */ \
857 done = -1; \
858 goto all_done; \
859 } \
860 \
861 done_add (function_done); \
862 } \
863 break; \
864 \
865 LABEL (form_floathex): \
866 { \
867 /* Floating point number printed as hexadecimal number. */ \
868 const void *ptr; \
869 int function_done; \
870 \
871 if (fspec == NULL) \
872 { \
873 if (__ldbl_is_dbl) \
874 is_long_double = 0; \
875 \
876 struct printf_info info = { .prec = prec, \
877 .width = width, \
878 .spec = spec, \
879 .is_long_double = is_long_double, \
880 .is_short = is_short, \
881 .is_long = is_long, \
882 .alt = alt, \
883 .space = space, \
884 .left = left, \
885 .showsign = showsign, \
886 .group = group, \
887 .pad = pad, \
888 .extra = 0, \
889 .wide = sizeof (CHAR_T) != 1 }; \
890 \
891 if (is_long_double) \
892 the_arg.pa_long_double = va_arg (ap, long double); \
893 else \
894 the_arg.pa_double = va_arg (ap, double); \
895 ptr = (const void *) &the_arg; \
896 \
897 function_done = __printf_fphex (s, &info, &ptr); \
898 } \
899 else \
900 { \
901 ptr = (const void *) &args_value[fspec->data_arg]; \
902 if (__ldbl_is_dbl) \
903 fspec->info.is_long_double = 0; \
904 \
905 function_done = __printf_fphex (s, &fspec->info, &ptr); \
906 } \
907 \
908 if (function_done < 0) \
909 { \
910 /* Error in print handler; up to handler to set errno. */ \
911 done = -1; \
912 goto all_done; \
913 } \
914 \
915 done_add (function_done); \
916 } \
917 break; \
918 \
919 LABEL (form_pointer): \
920 /* Generic pointer. */ \
921 { \
922 const void *ptr; \
923 if (fspec == NULL) \
924 ptr = va_arg (ap, void *); \
925 else \
926 ptr = args_value[fspec->data_arg].pa_pointer; \
927 if (ptr != NULL) \
928 { \
929 /* If the pointer is not NULL, write it as a %#x spec. */ \
930 base = 16; \
931 number.word = (unsigned long int) ptr; \
932 is_negative = 0; \
933 alt = 1; \
934 group = 0; \
935 spec = L_('x'); \
936 goto LABEL (number); \
937 } \
938 else \
939 { \
940 /* Write "(nil)" for a nil pointer. */ \
941 string = (CHAR_T *) L_("(nil)"); \
942 /* Make sure the full string "(nil)" is printed. */ \
943 if (prec < 5) \
944 prec = 5; \
945 /* This is a wide string iff compiling wprintf. */ \
946 is_long = sizeof (CHAR_T) > 1; \
947 goto LABEL (print_string); \
948 } \
949 } \
950 /* NOTREACHED */ \
951 \
952 LABEL (form_number): \
953 if (s->_flags2 & _IO_FLAGS2_FORTIFY) \
954 { \
955 if (! readonly_format) \
956 { \
957 extern int __readonly_area (const void *, size_t) \
958 attribute_hidden; \
959 readonly_format \
960 = __readonly_area (format, ((STR_LEN (format) + 1) \
961 * sizeof (CHAR_T))); \
962 } \
963 if (readonly_format < 0) \
964 __libc_fatal ("*** %n in writable segment detected ***\n"); \
965 } \
966 /* Answer the count of characters written. */ \
967 if (fspec == NULL) \
968 { \
969 if (is_longlong) \
970 *(long long int *) va_arg (ap, void *) = done; \
971 else if (is_long_num) \
972 *(long int *) va_arg (ap, void *) = done; \
973 else if (is_char) \
974 *(char *) va_arg (ap, void *) = done; \
975 else if (!is_short) \
976 *(int *) va_arg (ap, void *) = done; \
977 else \
978 *(short int *) va_arg (ap, void *) = done; \
979 } \
980 else \
981 if (is_longlong) \
982 *(long long int *) args_value[fspec->data_arg].pa_pointer = done; \
983 else if (is_long_num) \
984 *(long int *) args_value[fspec->data_arg].pa_pointer = done; \
985 else if (is_char) \
986 *(char *) args_value[fspec->data_arg].pa_pointer = done; \
987 else if (!is_short) \
988 *(int *) args_value[fspec->data_arg].pa_pointer = done; \
989 else \
990 *(short int *) args_value[fspec->data_arg].pa_pointer = done; \
991 break; \
992 \
993 LABEL (form_strerror): \
994 /* Print description of error ERRNO. */ \
995 string = \
996 (CHAR_T *) __strerror_r (save_errno, (char *) work_buffer, \
997 sizeof work_buffer); \
998 is_long = 0; /* This is no wide-char string. */ \
999 goto LABEL (print_string)
1000
1001 #ifdef COMPILE_WPRINTF
1002 # define process_string_arg(fspec) \
1003 LABEL (form_character): \
1004 /* Character. */ \
1005 if (is_long) \
1006 goto LABEL (form_wcharacter); \
1007 --width; /* Account for the character itself. */ \
1008 if (!left) \
1009 PAD (L' '); \
1010 if (fspec == NULL) \
1011 outchar (__btowc ((unsigned char) va_arg (ap, int))); /* Promoted. */ \
1012 else \
1013 outchar (__btowc ((unsigned char) \
1014 args_value[fspec->data_arg].pa_int)); \
1015 if (left) \
1016 PAD (L' '); \
1017 break; \
1018 \
1019 LABEL (form_wcharacter): \
1020 { \
1021 /* Wide character. */ \
1022 --width; \
1023 if (!left) \
1024 PAD (L' '); \
1025 if (fspec == NULL) \
1026 outchar (va_arg (ap, wchar_t)); \
1027 else \
1028 outchar (args_value[fspec->data_arg].pa_wchar); \
1029 if (left) \
1030 PAD (L' '); \
1031 } \
1032 break; \
1033 \
1034 LABEL (form_string): \
1035 { \
1036 size_t len; \
1037 int string_malloced; \
1038 \
1039 /* The string argument could in fact be `char *' or `wchar_t *'. \
1040 But this should not make a difference here. */ \
1041 if (fspec == NULL) \
1042 string = (CHAR_T *) va_arg (ap, const wchar_t *); \
1043 else \
1044 string = (CHAR_T *) args_value[fspec->data_arg].pa_wstring; \
1045 \
1046 /* Entry point for printing other strings. */ \
1047 LABEL (print_string): \
1048 \
1049 string_malloced = 0; \
1050 if (string == NULL) \
1051 { \
1052 /* Write "(null)" if there's space. */ \
1053 if (prec == -1 \
1054 || prec >= (int) (sizeof (null) / sizeof (null[0])) - 1) \
1055 { \
1056 string = (CHAR_T *) null; \
1057 len = (sizeof (null) / sizeof (null[0])) - 1; \
1058 } \
1059 else \
1060 { \
1061 string = (CHAR_T *) L""; \
1062 len = 0; \
1063 } \
1064 } \
1065 else if (!is_long && spec != L_('S')) \
1066 { \
1067 /* This is complicated. We have to transform the multibyte \
1068 string into a wide character string. */ \
1069 const char *mbs = (const char *) string; \
1070 mbstate_t mbstate; \
1071 \
1072 len = prec != -1 ? __strnlen (mbs, (size_t) prec) : strlen (mbs); \
1073 \
1074 /* Allocate dynamically an array which definitely is long \
1075 enough for the wide character version. Each byte in the \
1076 multi-byte string can produce at most one wide character. */ \
1077 if (__glibc_unlikely (len > SIZE_MAX / sizeof (wchar_t))) \
1078 { \
1079 __set_errno (EOVERFLOW); \
1080 done = -1; \
1081 goto all_done; \
1082 } \
1083 else if (__libc_use_alloca (len * sizeof (wchar_t))) \
1084 string = (CHAR_T *) alloca (len * sizeof (wchar_t)); \
1085 else if ((string = (CHAR_T *) malloc (len * sizeof (wchar_t))) \
1086 == NULL) \
1087 { \
1088 done = -1; \
1089 goto all_done; \
1090 } \
1091 else \
1092 string_malloced = 1; \
1093 \
1094 memset (&mbstate, '\0', sizeof (mbstate_t)); \
1095 len = __mbsrtowcs (string, &mbs, len, &mbstate); \
1096 if (len == (size_t) -1) \
1097 { \
1098 /* Illegal multibyte character. */ \
1099 done = -1; \
1100 goto all_done; \
1101 } \
1102 } \
1103 else \
1104 { \
1105 if (prec != -1) \
1106 /* Search for the end of the string, but don't search past \
1107 the length specified by the precision. */ \
1108 len = __wcsnlen (string, prec); \
1109 else \
1110 len = __wcslen (string); \
1111 } \
1112 \
1113 if ((width -= len) < 0) \
1114 { \
1115 outstring (string, len); \
1116 break; \
1117 } \
1118 \
1119 if (!left) \
1120 PAD (L' '); \
1121 outstring (string, len); \
1122 if (left) \
1123 PAD (L' '); \
1124 if (__glibc_unlikely (string_malloced)) \
1125 free (string); \
1126 } \
1127 break;
1128 #else
1129 # define process_string_arg(fspec) \
1130 LABEL (form_character): \
1131 /* Character. */ \
1132 if (is_long) \
1133 goto LABEL (form_wcharacter); \
1134 --width; /* Account for the character itself. */ \
1135 if (!left) \
1136 PAD (' '); \
1137 if (fspec == NULL) \
1138 outchar ((unsigned char) va_arg (ap, int)); /* Promoted. */ \
1139 else \
1140 outchar ((unsigned char) args_value[fspec->data_arg].pa_int); \
1141 if (left) \
1142 PAD (' '); \
1143 break; \
1144 \
1145 LABEL (form_wcharacter): \
1146 { \
1147 /* Wide character. */ \
1148 char buf[MB_CUR_MAX]; \
1149 mbstate_t mbstate; \
1150 size_t len; \
1151 \
1152 memset (&mbstate, '\0', sizeof (mbstate_t)); \
1153 len = __wcrtomb (buf, (fspec == NULL ? va_arg (ap, wchar_t) \
1154 : args_value[fspec->data_arg].pa_wchar), \
1155 &mbstate); \
1156 if (len == (size_t) -1) \
1157 { \
1158 /* Something went wrong during the conversion. Bail out. */ \
1159 done = -1; \
1160 goto all_done; \
1161 } \
1162 width -= len; \
1163 if (!left) \
1164 PAD (' '); \
1165 outstring (buf, len); \
1166 if (left) \
1167 PAD (' '); \
1168 } \
1169 break; \
1170 \
1171 LABEL (form_string): \
1172 { \
1173 size_t len; \
1174 int string_malloced; \
1175 \
1176 /* The string argument could in fact be `char *' or `wchar_t *'. \
1177 But this should not make a difference here. */ \
1178 if (fspec == NULL) \
1179 string = (char *) va_arg (ap, const char *); \
1180 else \
1181 string = (char *) args_value[fspec->data_arg].pa_string; \
1182 \
1183 /* Entry point for printing other strings. */ \
1184 LABEL (print_string): \
1185 \
1186 string_malloced = 0; \
1187 if (string == NULL) \
1188 { \
1189 /* Write "(null)" if there's space. */ \
1190 if (prec == -1 || prec >= (int) sizeof (null) - 1) \
1191 { \
1192 string = (char *) null; \
1193 len = sizeof (null) - 1; \
1194 } \
1195 else \
1196 { \
1197 string = (char *) ""; \
1198 len = 0; \
1199 } \
1200 } \
1201 else if (!is_long && spec != L_('S')) \
1202 { \
1203 if (prec != -1) \
1204 /* Search for the end of the string, but don't search past \
1205 the length (in bytes) specified by the precision. */ \
1206 len = __strnlen (string, prec); \
1207 else \
1208 len = strlen (string); \
1209 } \
1210 else \
1211 { \
1212 const wchar_t *s2 = (const wchar_t *) string; \
1213 mbstate_t mbstate; \
1214 \
1215 memset (&mbstate, '\0', sizeof (mbstate_t)); \
1216 \
1217 if (prec >= 0) \
1218 { \
1219 /* The string `s2' might not be NUL terminated. */ \
1220 if (__libc_use_alloca (prec)) \
1221 string = (char *) alloca (prec); \
1222 else if ((string = (char *) malloc (prec)) == NULL) \
1223 { \
1224 done = -1; \
1225 goto all_done; \
1226 } \
1227 else \
1228 string_malloced = 1; \
1229 len = __wcsrtombs (string, &s2, prec, &mbstate); \
1230 } \
1231 else \
1232 { \
1233 len = __wcsrtombs (NULL, &s2, 0, &mbstate); \
1234 if (len != (size_t) -1) \
1235 { \
1236 assert (__mbsinit (&mbstate)); \
1237 s2 = (const wchar_t *) string; \
1238 if (__libc_use_alloca (len + 1)) \
1239 string = (char *) alloca (len + 1); \
1240 else if ((string = (char *) malloc (len + 1)) == NULL) \
1241 { \
1242 done = -1; \
1243 goto all_done; \
1244 } \
1245 else \
1246 string_malloced = 1; \
1247 (void) __wcsrtombs (string, &s2, len + 1, &mbstate); \
1248 } \
1249 } \
1250 \
1251 if (len == (size_t) -1) \
1252 { \
1253 /* Illegal wide-character string. */ \
1254 done = -1; \
1255 goto all_done; \
1256 } \
1257 } \
1258 \
1259 if ((width -= len) < 0) \
1260 { \
1261 outstring (string, len); \
1262 break; \
1263 } \
1264 \
1265 if (!left) \
1266 PAD (' '); \
1267 outstring (string, len); \
1268 if (left) \
1269 PAD (' '); \
1270 if (__glibc_unlikely (string_malloced)) \
1271 free (string); \
1272 } \
1273 break;
1274 #endif
1275
1276 /* Orient the stream. */
1277 #ifdef ORIENT
1278 ORIENT;
1279 #endif
1280
1281 /* Sanity check of arguments. */
1282 ARGCHECK (s, format);
1283
1284 #ifdef ORIENT
1285 /* Check for correct orientation. */
1286 if (_IO_vtable_offset (s) == 0 &&
1287 _IO_fwide (s, sizeof (CHAR_T) == 1 ? -1 : 1)
1288 != (sizeof (CHAR_T) == 1 ? -1 : 1))
1289 /* The stream is already oriented otherwise. */
1290 return EOF;
1291 #endif
1292
1293 if (UNBUFFERED_P (s))
1294 /* Use a helper function which will allocate a local temporary buffer
1295 for the stream and then call us again. */
1296 return buffered_vfprintf (s, format, ap);
1297
1298 /* Initialize local variables. */
1299 done = 0;
1300 grouping = (const char *) -1;
1301 #ifdef __va_copy
1302 /* This macro will be available soon in gcc's <stdarg.h>. We need it
1303 since on some systems `va_list' is not an integral type. */
1304 __va_copy (ap_save, ap);
1305 #else
1306 ap_save = ap;
1307 #endif
1308 nspecs_done = 0;
1309
1310 #ifdef COMPILE_WPRINTF
1311 /* Find the first format specifier. */
1312 f = lead_str_end = __find_specwc ((const UCHAR_T *) format);
1313 #else
1314 /* Find the first format specifier. */
1315 f = lead_str_end = __find_specmb ((const UCHAR_T *) format);
1316 #endif
1317
1318 /* Lock stream. */
1319 _IO_cleanup_region_start ((void (*) (void *)) &_IO_funlockfile, s);
1320 _IO_flockfile (s);
1321
1322 /* Write the literal text before the first format. */
1323 outstring ((const UCHAR_T *) format,
1324 lead_str_end - (const UCHAR_T *) format);
1325
1326 /* If we only have to print a simple string, return now. */
1327 if (*f == L_('\0'))
1328 goto all_done;
1329
1330 /* Use the slow path in case any printf handler is registered. */
1331 if (__glibc_unlikely (__printf_function_table != NULL
1332 || __printf_modifier_table != NULL
1333 || __printf_va_arg_table != NULL))
1334 goto do_positional;
1335
1336 /* Process whole format string. */
1337 do
1338 {
1339 #ifdef SHARED
1340 # define REF(Name) &&do_##Name - &&do_form_unknown
1341 #else
1342 # define REF(Name) &&do_##Name
1343 #endif
1344 #define LABEL(Name) do_##Name
1345 STEP0_3_TABLE;
1346 STEP4_TABLE;
1347
1348 union printf_arg *args_value; /* This is not used here but ... */
1349 int is_negative; /* Flag for negative number. */
1350 union
1351 {
1352 unsigned long long int longlong;
1353 unsigned long int word;
1354 } number;
1355 int base;
1356 union printf_arg the_arg;
1357 CHAR_T *string; /* Pointer to argument string. */
1358 int alt = 0; /* Alternate format. */
1359 int space = 0; /* Use space prefix if no sign is needed. */
1360 int left = 0; /* Left-justify output. */
1361 int showsign = 0; /* Always begin with plus or minus sign. */
1362 int group = 0; /* Print numbers according grouping rules. */
1363 int is_long_double = 0; /* Argument is long double/ long long int. */
1364 int is_short = 0; /* Argument is short int. */
1365 int is_long = 0; /* Argument is long int. */
1366 int is_char = 0; /* Argument is promoted (unsigned) char. */
1367 int width = 0; /* Width of output; 0 means none specified. */
1368 int prec = -1; /* Precision of output; -1 means none specified. */
1369 /* This flag is set by the 'I' modifier and selects the use of the
1370 `outdigits' as determined by the current locale. */
1371 int use_outdigits = 0;
1372 UCHAR_T pad = L_(' ');/* Padding character. */
1373 CHAR_T spec;
1374
1375 workstart = NULL;
1376 workend = &work_buffer[sizeof (work_buffer) / sizeof (CHAR_T)];
1377
1378 /* Get current character in format string. */
1379 JUMP (*++f, step0_jumps);
1380
1381 /* ' ' flag. */
1382 LABEL (flag_space):
1383 space = 1;
1384 JUMP (*++f, step0_jumps);
1385
1386 /* '+' flag. */
1387 LABEL (flag_plus):
1388 showsign = 1;
1389 JUMP (*++f, step0_jumps);
1390
1391 /* The '-' flag. */
1392 LABEL (flag_minus):
1393 left = 1;
1394 pad = L_(' ');
1395 JUMP (*++f, step0_jumps);
1396
1397 /* The '#' flag. */
1398 LABEL (flag_hash):
1399 alt = 1;
1400 JUMP (*++f, step0_jumps);
1401
1402 /* The '0' flag. */
1403 LABEL (flag_zero):
1404 if (!left)
1405 pad = L_('0');
1406 JUMP (*++f, step0_jumps);
1407
1408 /* The '\'' flag. */
1409 LABEL (flag_quote):
1410 group = 1;
1411
1412 if (grouping == (const char *) -1)
1413 {
1414 #ifdef COMPILE_WPRINTF
1415 thousands_sep = _NL_CURRENT_WORD (LC_NUMERIC,
1416 _NL_NUMERIC_THOUSANDS_SEP_WC);
1417 #else
1418 thousands_sep = _NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP);
1419 #endif
1420
1421 grouping = _NL_CURRENT (LC_NUMERIC, GROUPING);
1422 if (*grouping == '\0' || *grouping == CHAR_MAX
1423 #ifdef COMPILE_WPRINTF
1424 || thousands_sep == L'\0'
1425 #else
1426 || *thousands_sep == '\0'
1427 #endif
1428 )
1429 grouping = NULL;
1430 }
1431 JUMP (*++f, step0_jumps);
1432
1433 LABEL (flag_i18n):
1434 use_outdigits = 1;
1435 JUMP (*++f, step0_jumps);
1436
1437 /* Get width from argument. */
1438 LABEL (width_asterics):
1439 {
1440 const UCHAR_T *tmp; /* Temporary value. */
1441
1442 tmp = ++f;
1443 if (ISDIGIT (*tmp))
1444 {
1445 int pos = read_int (&tmp);
1446
1447 if (pos == -1)
1448 {
1449 __set_errno (EOVERFLOW);
1450 done = -1;
1451 goto all_done;
1452 }
1453
1454 if (pos && *tmp == L_('$'))
1455 /* The width comes from a positional parameter. */
1456 goto do_positional;
1457 }
1458 width = va_arg (ap, int);
1459
1460 /* Negative width means left justified. */
1461 if (width < 0)
1462 {
1463 width = -width;
1464 pad = L_(' ');
1465 left = 1;
1466 }
1467
1468 if (__glibc_unlikely (width >= INT_MAX / sizeof (CHAR_T) - 32))
1469 {
1470 __set_errno (EOVERFLOW);
1471 done = -1;
1472 goto all_done;
1473 }
1474
1475 if (width >= sizeof (work_buffer) / sizeof (work_buffer[0]) - 32)
1476 {
1477 /* We have to use a special buffer. The "32" is just a safe
1478 bet for all the output which is not counted in the width. */
1479 size_t needed = ((size_t) width + 32) * sizeof (CHAR_T);
1480 if (__libc_use_alloca (needed))
1481 workend = (CHAR_T *) alloca (needed) + width + 32;
1482 else
1483 {
1484 workstart = (CHAR_T *) malloc (needed);
1485 if (workstart == NULL)
1486 {
1487 done = -1;
1488 goto all_done;
1489 }
1490 workend = workstart + width + 32;
1491 }
1492 }
1493 }
1494 JUMP (*f, step1_jumps);
1495
1496 /* Given width in format string. */
1497 LABEL (width):
1498 width = read_int (&f);
1499
1500 if (__glibc_unlikely (width == -1
1501 || width >= INT_MAX / sizeof (CHAR_T) - 32))
1502 {
1503 __set_errno (EOVERFLOW);
1504 done = -1;
1505 goto all_done;
1506 }
1507
1508 if (width >= sizeof (work_buffer) / sizeof (work_buffer[0]) - 32)
1509 {
1510 /* We have to use a special buffer. The "32" is just a safe
1511 bet for all the output which is not counted in the width. */
1512 size_t needed = ((size_t) width + 32) * sizeof (CHAR_T);
1513 if (__libc_use_alloca (needed))
1514 workend = (CHAR_T *) alloca (needed) + width + 32;
1515 else
1516 {
1517 workstart = (CHAR_T *) malloc (needed);
1518 if (workstart == NULL)
1519 {
1520 done = -1;
1521 goto all_done;
1522 }
1523 workend = workstart + width + 32;
1524 }
1525 }
1526 if (*f == L_('$'))
1527 /* Oh, oh. The argument comes from a positional parameter. */
1528 goto do_positional;
1529 JUMP (*f, step1_jumps);
1530
1531 LABEL (precision):
1532 ++f;
1533 if (*f == L_('*'))
1534 {
1535 const UCHAR_T *tmp; /* Temporary value. */
1536
1537 tmp = ++f;
1538 if (ISDIGIT (*tmp))
1539 {
1540 int pos = read_int (&tmp);
1541
1542 if (pos == -1)
1543 {
1544 __set_errno (EOVERFLOW);
1545 done = -1;
1546 goto all_done;
1547 }
1548
1549 if (pos && *tmp == L_('$'))
1550 /* The precision comes from a positional parameter. */
1551 goto do_positional;
1552 }
1553 prec = va_arg (ap, int);
1554
1555 /* If the precision is negative the precision is omitted. */
1556 if (prec < 0)
1557 prec = -1;
1558 }
1559 else if (ISDIGIT (*f))
1560 {
1561 prec = read_int (&f);
1562
1563 /* The precision was specified in this case as an extremely
1564 large positive value. */
1565 if (prec == -1)
1566 {
1567 __set_errno (EOVERFLOW);
1568 done = -1;
1569 goto all_done;
1570 }
1571 }
1572 else
1573 prec = 0;
1574 if (prec > width
1575 && prec > sizeof (work_buffer) / sizeof (work_buffer[0]) - 32)
1576 {
1577 if (__glibc_unlikely (prec >= INT_MAX / sizeof (CHAR_T) - 32))
1578 {
1579 __set_errno (EOVERFLOW);
1580 done = -1;
1581 goto all_done;
1582 }
1583 size_t needed = ((size_t) prec + 32) * sizeof (CHAR_T);
1584
1585 if (__libc_use_alloca (needed))
1586 workend = (CHAR_T *) alloca (needed) + prec + 32;
1587 else
1588 {
1589 workstart = (CHAR_T *) malloc (needed);
1590 if (workstart == NULL)
1591 {
1592 done = -1;
1593 goto all_done;
1594 }
1595 workend = workstart + prec + 32;
1596 }
1597 }
1598 JUMP (*f, step2_jumps);
1599
1600 /* Process 'h' modifier. There might another 'h' following. */
1601 LABEL (mod_half):
1602 is_short = 1;
1603 JUMP (*++f, step3a_jumps);
1604
1605 /* Process 'hh' modifier. */
1606 LABEL (mod_halfhalf):
1607 is_short = 0;
1608 is_char = 1;
1609 JUMP (*++f, step4_jumps);
1610
1611 /* Process 'l' modifier. There might another 'l' following. */
1612 LABEL (mod_long):
1613 is_long = 1;
1614 JUMP (*++f, step3b_jumps);
1615
1616 /* Process 'L', 'q', or 'll' modifier. No other modifier is
1617 allowed to follow. */
1618 LABEL (mod_longlong):
1619 is_long_double = 1;
1620 is_long = 1;
1621 JUMP (*++f, step4_jumps);
1622
1623 LABEL (mod_size_t):
1624 is_long_double = sizeof (size_t) > sizeof (unsigned long int);
1625 is_long = sizeof (size_t) > sizeof (unsigned int);
1626 JUMP (*++f, step4_jumps);
1627
1628 LABEL (mod_ptrdiff_t):
1629 is_long_double = sizeof (ptrdiff_t) > sizeof (unsigned long int);
1630 is_long = sizeof (ptrdiff_t) > sizeof (unsigned int);
1631 JUMP (*++f, step4_jumps);
1632
1633 LABEL (mod_intmax_t):
1634 is_long_double = sizeof (intmax_t) > sizeof (unsigned long int);
1635 is_long = sizeof (intmax_t) > sizeof (unsigned int);
1636 JUMP (*++f, step4_jumps);
1637
1638 /* Process current format. */
1639 while (1)
1640 {
1641 process_arg (((struct printf_spec *) NULL));
1642 process_string_arg (((struct printf_spec *) NULL));
1643
1644 LABEL (form_unknown):
1645 if (spec == L_('\0'))
1646 {
1647 /* The format string ended before the specifier is complete. */
1648 __set_errno (EINVAL);
1649 done = -1;
1650 goto all_done;
1651 }
1652
1653 /* If we are in the fast loop force entering the complicated
1654 one. */
1655 goto do_positional;
1656 }
1657
1658 /* The format is correctly handled. */
1659 ++nspecs_done;
1660
1661 if (__glibc_unlikely (workstart != NULL))
1662 free (workstart);
1663 workstart = NULL;
1664
1665 /* Look for next format specifier. */
1666 #ifdef COMPILE_WPRINTF
1667 f = __find_specwc ((end_of_spec = ++f));
1668 #else
1669 f = __find_specmb ((end_of_spec = ++f));
1670 #endif
1671
1672 /* Write the following constant string. */
1673 outstring (end_of_spec, f - end_of_spec);
1674 }
1675 while (*f != L_('\0'));
1676
1677 /* Unlock stream and return. */
1678 goto all_done;
1679
1680 /* Here starts the more complex loop to handle positional parameters. */
1681 do_positional:
1682 {
1683 /* Array with information about the needed arguments. This has to
1684 be dynamically extensible. */
1685 size_t nspecs = 0;
1686 /* A more or less arbitrary start value. */
1687 size_t nspecs_size = 32 * sizeof (struct printf_spec);
1688
1689 specs = alloca (nspecs_size);
1690 /* The number of arguments the format string requests. This will
1691 determine the size of the array needed to store the argument
1692 attributes. */
1693 size_t nargs = 0;
1694 size_t bytes_per_arg;
1695 union printf_arg *args_value;
1696 int *args_size;
1697 int *args_type;
1698
1699 /* Positional parameters refer to arguments directly. This could
1700 also determine the maximum number of arguments. Track the
1701 maximum number. */
1702 size_t max_ref_arg = 0;
1703
1704 /* Just a counter. */
1705 size_t cnt;
1706
1707 if (__glibc_unlikely (workstart != NULL))
1708 free (workstart);
1709 workstart = NULL;
1710
1711 if (grouping == (const char *) -1)
1712 {
1713 #ifdef COMPILE_WPRINTF
1714 thousands_sep = _NL_CURRENT_WORD (LC_NUMERIC,
1715 _NL_NUMERIC_THOUSANDS_SEP_WC);
1716 #else
1717 thousands_sep = _NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP);
1718 #endif
1719
1720 grouping = _NL_CURRENT (LC_NUMERIC, GROUPING);
1721 if (*grouping == '\0' || *grouping == CHAR_MAX)
1722 grouping = NULL;
1723 }
1724
1725 for (f = lead_str_end; *f != L_('\0'); f = specs[nspecs++].next_fmt)
1726 {
1727 if (nspecs * sizeof (*specs) >= nspecs_size)
1728 {
1729 /* Extend the array of format specifiers. */
1730 if (nspecs_size * 2 < nspecs_size)
1731 {
1732 __set_errno (ENOMEM);
1733 done = -1;
1734 goto all_done;
1735 }
1736 struct printf_spec *old = specs;
1737 if (__libc_use_alloca (2 * nspecs_size))
1738 specs = extend_alloca (specs, nspecs_size, 2 * nspecs_size);
1739 else
1740 {
1741 nspecs_size *= 2;
1742 specs = malloc (nspecs_size);
1743 if (specs == NULL)
1744 {
1745 __set_errno (ENOMEM);
1746 specs = old;
1747 done = -1;
1748 goto all_done;
1749 }
1750 }
1751
1752 /* Copy the old array's elements to the new space. */
1753 memmove (specs, old, nspecs * sizeof (*specs));
1754
1755 /* If we had previously malloc'd space for SPECS, then
1756 release it after the copy is complete. */
1757 if (specs_malloced)
1758 free (old);
1759
1760 /* Now set SPECS_MALLOCED if needed. */
1761 if (!__libc_use_alloca (nspecs_size))
1762 specs_malloced = true;
1763 }
1764
1765 /* Parse the format specifier. */
1766 #ifdef COMPILE_WPRINTF
1767 nargs += __parse_one_specwc (f, nargs, &specs[nspecs], &max_ref_arg);
1768 #else
1769 nargs += __parse_one_specmb (f, nargs, &specs[nspecs], &max_ref_arg);
1770 #endif
1771 }
1772
1773 /* Determine the number of arguments the format string consumes. */
1774 nargs = MAX (nargs, max_ref_arg);
1775 /* Calculate total size needed to represent a single argument across
1776 all three argument-related arrays. */
1777 bytes_per_arg = (sizeof (*args_value) + sizeof (*args_size)
1778 + sizeof (*args_type));
1779
1780 /* Check for potential integer overflow. */
1781 if (__glibc_unlikely (nargs > INT_MAX / bytes_per_arg))
1782 {
1783 __set_errno (EOVERFLOW);
1784 done = -1;
1785 goto all_done;
1786 }
1787
1788 /* Allocate memory for all three argument arrays. */
1789 if (__libc_use_alloca (nargs * bytes_per_arg))
1790 args_value = alloca (nargs * bytes_per_arg);
1791 else
1792 {
1793 args_value = args_malloced = malloc (nargs * bytes_per_arg);
1794 if (args_value == NULL)
1795 {
1796 done = -1;
1797 goto all_done;
1798 }
1799 }
1800
1801 /* Set up the remaining two arrays to each point past the end of the
1802 prior array, since space for all three has been allocated now. */
1803 args_size = &args_value[nargs].pa_int;
1804 args_type = &args_size[nargs];
1805 memset (args_type, s->_flags2 & _IO_FLAGS2_FORTIFY ? '\xff' : '\0',
1806 nargs * sizeof (*args_type));
1807
1808 /* XXX Could do sanity check here: If any element in ARGS_TYPE is
1809 still zero after this loop, format is invalid. For now we
1810 simply use 0 as the value. */
1811
1812 /* Fill in the types of all the arguments. */
1813 for (cnt = 0; cnt < nspecs; ++cnt)
1814 {
1815 /* If the width is determined by an argument this is an int. */
1816 if (specs[cnt].width_arg != -1)
1817 args_type[specs[cnt].width_arg] = PA_INT;
1818
1819 /* If the precision is determined by an argument this is an int. */
1820 if (specs[cnt].prec_arg != -1)
1821 args_type[specs[cnt].prec_arg] = PA_INT;
1822
1823 switch (specs[cnt].ndata_args)
1824 {
1825 case 0: /* No arguments. */
1826 break;
1827 case 1: /* One argument; we already have the
1828 type and size. */
1829 args_type[specs[cnt].data_arg] = specs[cnt].data_arg_type;
1830 args_size[specs[cnt].data_arg] = specs[cnt].size;
1831 break;
1832 default:
1833 /* We have more than one argument for this format spec.
1834 We must call the arginfo function again to determine
1835 all the types. */
1836 (void) (*__printf_arginfo_table[specs[cnt].info.spec])
1837 (&specs[cnt].info,
1838 specs[cnt].ndata_args, &args_type[specs[cnt].data_arg],
1839 &args_size[specs[cnt].data_arg]);
1840 break;
1841 }
1842 }
1843
1844 /* Now we know all the types and the order. Fill in the argument
1845 values. */
1846 for (cnt = 0; cnt < nargs; ++cnt)
1847 switch (args_type[cnt])
1848 {
1849 #define T(tag, mem, type) \
1850 case tag: \
1851 args_value[cnt].mem = va_arg (ap_save, type); \
1852 break
1853
1854 T (PA_WCHAR, pa_wchar, wint_t);
1855 case PA_CHAR: /* Promoted. */
1856 case PA_INT|PA_FLAG_SHORT: /* Promoted. */
1857 #if LONG_MAX == INT_MAX
1858 case PA_INT|PA_FLAG_LONG:
1859 #endif
1860 T (PA_INT, pa_int, int);
1861 #if LONG_MAX == LONG_LONG_MAX
1862 case PA_INT|PA_FLAG_LONG:
1863 #endif
1864 T (PA_INT|PA_FLAG_LONG_LONG, pa_long_long_int, long long int);
1865 #if LONG_MAX != INT_MAX && LONG_MAX != LONG_LONG_MAX
1866 # error "he?"
1867 #endif
1868 case PA_FLOAT: /* Promoted. */
1869 T (PA_DOUBLE, pa_double, double);
1870 case PA_DOUBLE|PA_FLAG_LONG_DOUBLE:
1871 if (__ldbl_is_dbl)
1872 {
1873 args_value[cnt].pa_double = va_arg (ap_save, double);
1874 args_type[cnt] &= ~PA_FLAG_LONG_DOUBLE;
1875 }
1876 else
1877 args_value[cnt].pa_long_double = va_arg (ap_save, long double);
1878 break;
1879 case PA_STRING: /* All pointers are the same */
1880 case PA_WSTRING: /* All pointers are the same */
1881 T (PA_POINTER, pa_pointer, void *);
1882 #undef T
1883 default:
1884 if ((args_type[cnt] & PA_FLAG_PTR) != 0)
1885 args_value[cnt].pa_pointer = va_arg (ap_save, void *);
1886 else if (__glibc_unlikely (__printf_va_arg_table != NULL)
1887 && __printf_va_arg_table[args_type[cnt] - PA_LAST] != NULL)
1888 {
1889 args_value[cnt].pa_user = alloca (args_size[cnt]);
1890 (*__printf_va_arg_table[args_type[cnt] - PA_LAST])
1891 (args_value[cnt].pa_user, &ap_save);
1892 }
1893 else
1894 args_value[cnt].pa_long_double = 0.0;
1895 break;
1896 case -1:
1897 /* Error case. Not all parameters appear in N$ format
1898 strings. We have no way to determine their type. */
1899 assert (s->_flags2 & _IO_FLAGS2_FORTIFY);
1900 __libc_fatal ("*** invalid %N$ use detected ***\n");
1901 }
1902
1903 /* Now walk through all format specifiers and process them. */
1904 for (; (size_t) nspecs_done < nspecs; ++nspecs_done)
1905 {
1906 #undef REF
1907 #ifdef SHARED
1908 # define REF(Name) &&do2_##Name - &&do_form_unknown
1909 #else
1910 # define REF(Name) &&do2_##Name
1911 #endif
1912 #undef LABEL
1913 #define LABEL(Name) do2_##Name
1914 STEP4_TABLE;
1915
1916 int is_negative;
1917 union
1918 {
1919 unsigned long long int longlong;
1920 unsigned long int word;
1921 } number;
1922 int base;
1923 union printf_arg the_arg;
1924 CHAR_T *string; /* Pointer to argument string. */
1925
1926 /* Fill variables from values in struct. */
1927 int alt = specs[nspecs_done].info.alt;
1928 int space = specs[nspecs_done].info.space;
1929 int left = specs[nspecs_done].info.left;
1930 int showsign = specs[nspecs_done].info.showsign;
1931 int group = specs[nspecs_done].info.group;
1932 int is_long_double = specs[nspecs_done].info.is_long_double;
1933 int is_short = specs[nspecs_done].info.is_short;
1934 int is_char = specs[nspecs_done].info.is_char;
1935 int is_long = specs[nspecs_done].info.is_long;
1936 int width = specs[nspecs_done].info.width;
1937 int prec = specs[nspecs_done].info.prec;
1938 int use_outdigits = specs[nspecs_done].info.i18n;
1939 char pad = specs[nspecs_done].info.pad;
1940 CHAR_T spec = specs[nspecs_done].info.spec;
1941
1942 workstart = NULL;
1943 workend = &work_buffer[sizeof (work_buffer) / sizeof (CHAR_T)];
1944
1945 /* Fill in last information. */
1946 if (specs[nspecs_done].width_arg != -1)
1947 {
1948 /* Extract the field width from an argument. */
1949 specs[nspecs_done].info.width =
1950 args_value[specs[nspecs_done].width_arg].pa_int;
1951
1952 if (specs[nspecs_done].info.width < 0)
1953 /* If the width value is negative left justification is
1954 selected and the value is taken as being positive. */
1955 {
1956 specs[nspecs_done].info.width *= -1;
1957 left = specs[nspecs_done].info.left = 1;
1958 }
1959 width = specs[nspecs_done].info.width;
1960 }
1961
1962 if (specs[nspecs_done].prec_arg != -1)
1963 {
1964 /* Extract the precision from an argument. */
1965 specs[nspecs_done].info.prec =
1966 args_value[specs[nspecs_done].prec_arg].pa_int;
1967
1968 if (specs[nspecs_done].info.prec < 0)
1969 /* If the precision is negative the precision is
1970 omitted. */
1971 specs[nspecs_done].info.prec = -1;
1972
1973 prec = specs[nspecs_done].info.prec;
1974 }
1975
1976 /* Maybe the buffer is too small. */
1977 if (MAX (prec, width) + 32 > (int) (sizeof (work_buffer)
1978 / sizeof (CHAR_T)))
1979 {
1980 if (__libc_use_alloca ((MAX (prec, width) + 32)
1981 * sizeof (CHAR_T)))
1982 workend = ((CHAR_T *) alloca ((MAX (prec, width) + 32)
1983 * sizeof (CHAR_T))
1984 + (MAX (prec, width) + 32));
1985 else
1986 {
1987 workstart = (CHAR_T *) malloc ((MAX (prec, width) + 32)
1988 * sizeof (CHAR_T));
1989 if (workstart == NULL)
1990 {
1991 done = -1;
1992 goto all_done;
1993 }
1994 workend = workstart + (MAX (prec, width) + 32);
1995 }
1996 }
1997
1998 /* Process format specifiers. */
1999 while (1)
2000 {
2001 extern printf_function **__printf_function_table;
2002 int function_done;
2003
2004 if (spec <= UCHAR_MAX
2005 && __printf_function_table != NULL
2006 && __printf_function_table[(size_t) spec] != NULL)
2007 {
2008 const void **ptr = alloca (specs[nspecs_done].ndata_args
2009 * sizeof (const void *));
2010
2011 /* Fill in an array of pointers to the argument values. */
2012 for (unsigned int i = 0; i < specs[nspecs_done].ndata_args;
2013 ++i)
2014 ptr[i] = &args_value[specs[nspecs_done].data_arg + i];
2015
2016 /* Call the function. */
2017 function_done = __printf_function_table[(size_t) spec]
2018 (s, &specs[nspecs_done].info, ptr);
2019
2020 if (function_done != -2)
2021 {
2022 /* If an error occurred we don't have information
2023 about # of chars. */
2024 if (function_done < 0)
2025 {
2026 /* Function has set errno. */
2027 done = -1;
2028 goto all_done;
2029 }
2030
2031 done_add (function_done);
2032 break;
2033 }
2034 }
2035
2036 JUMP (spec, step4_jumps);
2037
2038 process_arg ((&specs[nspecs_done]));
2039 process_string_arg ((&specs[nspecs_done]));
2040
2041 LABEL (form_unknown):
2042 {
2043 unsigned int i;
2044 const void **ptr;
2045
2046 ptr = alloca (specs[nspecs_done].ndata_args
2047 * sizeof (const void *));
2048
2049 /* Fill in an array of pointers to the argument values. */
2050 for (i = 0; i < specs[nspecs_done].ndata_args; ++i)
2051 ptr[i] = &args_value[specs[nspecs_done].data_arg + i];
2052
2053 /* Call the function. */
2054 function_done = printf_unknown (s, &specs[nspecs_done].info,
2055 ptr);
2056
2057 /* If an error occurred we don't have information about #
2058 of chars. */
2059 if (function_done < 0)
2060 {
2061 /* Function has set errno. */
2062 done = -1;
2063 goto all_done;
2064 }
2065
2066 done_add (function_done);
2067 }
2068 break;
2069 }
2070
2071 if (__glibc_unlikely (workstart != NULL))
2072 free (workstart);
2073 workstart = NULL;
2074
2075 /* Write the following constant string. */
2076 outstring (specs[nspecs_done].end_of_fmt,
2077 specs[nspecs_done].next_fmt
2078 - specs[nspecs_done].end_of_fmt);
2079 }
2080 }
2081
2082 all_done:
2083 if (specs_malloced)
2084 free (specs);
2085 if (__glibc_unlikely (args_malloced != NULL))
2086 free (args_malloced);
2087 if (__glibc_unlikely (workstart != NULL))
2088 free (workstart);
2089 /* Unlock the stream. */
2090 _IO_funlockfile (s);
2091 _IO_cleanup_region_end (0);
2092
2093 return done;
2094 }
2095 \f
2096 /* Handle an unknown format specifier. This prints out a canonicalized
2097 representation of the format spec itself. */
2098 static int
2099 printf_unknown (FILE *s, const struct printf_info *info,
2100 const void *const *args)
2101
2102 {
2103 int done = 0;
2104 CHAR_T work_buffer[MAX (sizeof (info->width), sizeof (info->prec)) * 3];
2105 CHAR_T *const workend
2106 = &work_buffer[sizeof (work_buffer) / sizeof (CHAR_T)];
2107 CHAR_T *w;
2108
2109 outchar (L_('%'));
2110
2111 if (info->alt)
2112 outchar (L_('#'));
2113 if (info->group)
2114 outchar (L_('\''));
2115 if (info->showsign)
2116 outchar (L_('+'));
2117 else if (info->space)
2118 outchar (L_(' '));
2119 if (info->left)
2120 outchar (L_('-'));
2121 if (info->pad == L_('0'))
2122 outchar (L_('0'));
2123 if (info->i18n)
2124 outchar (L_('I'));
2125
2126 if (info->width != 0)
2127 {
2128 w = _itoa_word (info->width, workend, 10, 0);
2129 while (w < workend)
2130 outchar (*w++);
2131 }
2132
2133 if (info->prec != -1)
2134 {
2135 outchar (L_('.'));
2136 w = _itoa_word (info->prec, workend, 10, 0);
2137 while (w < workend)
2138 outchar (*w++);
2139 }
2140
2141 if (info->spec != L_('\0'))
2142 outchar (info->spec);
2143
2144 all_done:
2145 return done;
2146 }
2147 \f
2148 /* Group the digits according to the grouping rules of the current locale.
2149 The interpretation of GROUPING is as in `struct lconv' from <locale.h>. */
2150 static CHAR_T *
2151 internal_function
2152 group_number (CHAR_T *w, CHAR_T *rear_ptr, const char *grouping,
2153 #ifdef COMPILE_WPRINTF
2154 wchar_t thousands_sep
2155 #else
2156 const char *thousands_sep
2157 #endif
2158 )
2159 {
2160 int len;
2161 CHAR_T *src, *s;
2162 #ifndef COMPILE_WPRINTF
2163 int tlen = strlen (thousands_sep);
2164 #endif
2165
2166 /* We treat all negative values like CHAR_MAX. */
2167
2168 if (*grouping == CHAR_MAX || *grouping <= 0)
2169 /* No grouping should be done. */
2170 return w;
2171
2172 len = *grouping++;
2173
2174 /* Copy existing string so that nothing gets overwritten. */
2175 src = (CHAR_T *) alloca ((rear_ptr - w) * sizeof (CHAR_T));
2176 s = (CHAR_T *) __mempcpy (src, w,
2177 (rear_ptr - w) * sizeof (CHAR_T));
2178 w = rear_ptr;
2179
2180 /* Process all characters in the string. */
2181 while (s > src)
2182 {
2183 *--w = *--s;
2184
2185 if (--len == 0 && s > src)
2186 {
2187 /* A new group begins. */
2188 #ifdef COMPILE_WPRINTF
2189 *--w = thousands_sep;
2190 #else
2191 int cnt = tlen;
2192 do
2193 *--w = thousands_sep[--cnt];
2194 while (cnt > 0);
2195 #endif
2196
2197 if (*grouping == CHAR_MAX
2198 #if CHAR_MIN < 0
2199 || *grouping < 0
2200 #endif
2201 )
2202 {
2203 /* No further grouping to be done.
2204 Copy the rest of the number. */
2205 do
2206 *--w = *--s;
2207 while (s > src);
2208 break;
2209 }
2210 else if (*grouping != '\0')
2211 /* The previous grouping repeats ad infinitum. */
2212 len = *grouping++;
2213 else
2214 len = grouping[-1];
2215 }
2216 }
2217 return w;
2218 }
2219 \f
2220 /* Helper "class" for `fprintf to unbuffered': creates a temporary buffer. */
2221 struct helper_file
2222 {
2223 struct _IO_FILE_plus _f;
2224 #ifdef COMPILE_WPRINTF
2225 struct _IO_wide_data _wide_data;
2226 #endif
2227 _IO_FILE *_put_stream;
2228 #ifdef _IO_MTSAFE_IO
2229 _IO_lock_t lock;
2230 #endif
2231 };
2232
2233 static int
2234 _IO_helper_overflow (_IO_FILE *s, int c)
2235 {
2236 _IO_FILE *target = ((struct helper_file*) s)->_put_stream;
2237 #ifdef COMPILE_WPRINTF
2238 int used = s->_wide_data->_IO_write_ptr - s->_wide_data->_IO_write_base;
2239 if (used)
2240 {
2241 _IO_size_t written = _IO_sputn (target, s->_wide_data->_IO_write_base,
2242 used);
2243 if (written == 0 || written == WEOF)
2244 return WEOF;
2245 __wmemmove (s->_wide_data->_IO_write_base,
2246 s->_wide_data->_IO_write_base + written,
2247 used - written);
2248 s->_wide_data->_IO_write_ptr -= written;
2249 }
2250 #else
2251 int used = s->_IO_write_ptr - s->_IO_write_base;
2252 if (used)
2253 {
2254 _IO_size_t written = _IO_sputn (target, s->_IO_write_base, used);
2255 if (written == 0 || written == EOF)
2256 return EOF;
2257 memmove (s->_IO_write_base, s->_IO_write_base + written,
2258 used - written);
2259 s->_IO_write_ptr -= written;
2260 }
2261 #endif
2262 return PUTC (c, s);
2263 }
2264
2265 #ifdef COMPILE_WPRINTF
2266 static const struct _IO_jump_t _IO_helper_jumps =
2267 {
2268 JUMP_INIT_DUMMY,
2269 JUMP_INIT (finish, _IO_wdefault_finish),
2270 JUMP_INIT (overflow, _IO_helper_overflow),
2271 JUMP_INIT (underflow, _IO_default_underflow),
2272 JUMP_INIT (uflow, _IO_default_uflow),
2273 JUMP_INIT (pbackfail, (_IO_pbackfail_t) _IO_wdefault_pbackfail),
2274 JUMP_INIT (xsputn, _IO_wdefault_xsputn),
2275 JUMP_INIT (xsgetn, _IO_wdefault_xsgetn),
2276 JUMP_INIT (seekoff, _IO_default_seekoff),
2277 JUMP_INIT (seekpos, _IO_default_seekpos),
2278 JUMP_INIT (setbuf, _IO_default_setbuf),
2279 JUMP_INIT (sync, _IO_default_sync),
2280 JUMP_INIT (doallocate, _IO_wdefault_doallocate),
2281 JUMP_INIT (read, _IO_default_read),
2282 JUMP_INIT (write, _IO_default_write),
2283 JUMP_INIT (seek, _IO_default_seek),
2284 JUMP_INIT (close, _IO_default_close),
2285 JUMP_INIT (stat, _IO_default_stat)
2286 };
2287 #else
2288 static const struct _IO_jump_t _IO_helper_jumps =
2289 {
2290 JUMP_INIT_DUMMY,
2291 JUMP_INIT (finish, _IO_default_finish),
2292 JUMP_INIT (overflow, _IO_helper_overflow),
2293 JUMP_INIT (underflow, _IO_default_underflow),
2294 JUMP_INIT (uflow, _IO_default_uflow),
2295 JUMP_INIT (pbackfail, _IO_default_pbackfail),
2296 JUMP_INIT (xsputn, _IO_default_xsputn),
2297 JUMP_INIT (xsgetn, _IO_default_xsgetn),
2298 JUMP_INIT (seekoff, _IO_default_seekoff),
2299 JUMP_INIT (seekpos, _IO_default_seekpos),
2300 JUMP_INIT (setbuf, _IO_default_setbuf),
2301 JUMP_INIT (sync, _IO_default_sync),
2302 JUMP_INIT (doallocate, _IO_default_doallocate),
2303 JUMP_INIT (read, _IO_default_read),
2304 JUMP_INIT (write, _IO_default_write),
2305 JUMP_INIT (seek, _IO_default_seek),
2306 JUMP_INIT (close, _IO_default_close),
2307 JUMP_INIT (stat, _IO_default_stat)
2308 };
2309 #endif
2310
2311 static int
2312 internal_function
2313 buffered_vfprintf (_IO_FILE *s, const CHAR_T *format,
2314 _IO_va_list args)
2315 {
2316 CHAR_T buf[_IO_BUFSIZ];
2317 struct helper_file helper;
2318 _IO_FILE *hp = (_IO_FILE *) &helper._f;
2319 int result, to_flush;
2320
2321 /* Orient the stream. */
2322 #ifdef ORIENT
2323 ORIENT;
2324 #endif
2325
2326 /* Initialize helper. */
2327 helper._put_stream = s;
2328 #ifdef COMPILE_WPRINTF
2329 hp->_wide_data = &helper._wide_data;
2330 _IO_wsetp (hp, buf, buf + sizeof buf / sizeof (CHAR_T));
2331 hp->_mode = 1;
2332 #else
2333 _IO_setp (hp, buf, buf + sizeof buf);
2334 hp->_mode = -1;
2335 #endif
2336 hp->_IO_file_flags = _IO_MAGIC|_IO_NO_READS|_IO_USER_LOCK;
2337 #if _IO_JUMPS_OFFSET
2338 hp->_vtable_offset = 0;
2339 #endif
2340 #ifdef _IO_MTSAFE_IO
2341 hp->_lock = NULL;
2342 #endif
2343 hp->_flags2 = s->_flags2;
2344 _IO_JUMPS (&helper._f) = (struct _IO_jump_t *) &_IO_helper_jumps;
2345
2346 /* Now print to helper instead. */
2347 #ifndef COMPILE_WPRINTF
2348 result = _IO_vfprintf (hp, format, args);
2349 #else
2350 result = vfprintf (hp, format, args);
2351 #endif
2352
2353 /* Lock stream. */
2354 __libc_cleanup_region_start (1, (void (*) (void *)) &_IO_funlockfile, s);
2355 _IO_flockfile (s);
2356
2357 /* Now flush anything from the helper to the S. */
2358 #ifdef COMPILE_WPRINTF
2359 if ((to_flush = (hp->_wide_data->_IO_write_ptr
2360 - hp->_wide_data->_IO_write_base)) > 0)
2361 {
2362 if ((int) _IO_sputn (s, hp->_wide_data->_IO_write_base, to_flush)
2363 != to_flush)
2364 result = -1;
2365 }
2366 #else
2367 if ((to_flush = hp->_IO_write_ptr - hp->_IO_write_base) > 0)
2368 {
2369 if ((int) _IO_sputn (s, hp->_IO_write_base, to_flush) != to_flush)
2370 result = -1;
2371 }
2372 #endif
2373
2374 /* Unlock the stream. */
2375 _IO_funlockfile (s);
2376 __libc_cleanup_region_end (0);
2377
2378 return result;
2379 }
2380
2381 #undef vfprintf
2382 #ifdef COMPILE_WPRINTF
2383 strong_alias (_IO_vfwprintf, __vfwprintf);
2384 ldbl_weak_alias (_IO_vfwprintf, vfwprintf);
2385 #else
2386 ldbl_strong_alias (_IO_vfprintf_internal, vfprintf);
2387 ldbl_hidden_def (_IO_vfprintf_internal, vfprintf)
2388 ldbl_strong_alias (_IO_vfprintf_internal, _IO_vfprintf);
2389 ldbl_hidden_def (_IO_vfprintf_internal, _IO_vfprintf)
2390 #endif
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