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1 | /* Copyright (C) 1991-2018 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 <array_length.h> | |
19 | #include <ctype.h> | |
20 | #include <limits.h> | |
21 | #include <printf.h> | |
22 | #include <stdarg.h> | |
23 | #include <stdint.h> | |
24 | #include <stdlib.h> | |
25 | #include <string.h> | |
26 | #include <errno.h> | |
27 | #include <wchar.h> | |
28 | #include <libc-lock.h> | |
29 | #include <sys/param.h> | |
30 | #include <_itoa.h> | |
31 | #include <locale/localeinfo.h> | |
32 | #include <stdio.h> | |
33 | #include <scratch_buffer.h> | |
34 | ||
35 | /* This code is shared between the standard stdio implementation found | |
36 | in GNU C library and the libio implementation originally found in | |
37 | GNU libg++. | |
38 | ||
39 | Beside this it is also shared between the normal and wide character | |
40 | implementation as defined in ISO/IEC 9899:1990/Amendment 1:1995. */ | |
41 | ||
42 | #include <libioP.h> | |
43 | ||
44 | #ifdef COMPILE_WPRINTF | |
45 | #include <wctype.h> | |
46 | #endif | |
47 | ||
48 | /* In some cases we need extra space for all the output which is not | |
49 | counted in the width of the string. We assume 32 characters is | |
50 | enough. */ | |
51 | #define EXTSIZ 32 | |
52 | #define ARGCHECK(S, Format) \ | |
53 | do \ | |
54 | { \ | |
55 | /* Check file argument for consistence. */ \ | |
56 | CHECK_FILE (S, -1); \ | |
57 | if (S->_flags & _IO_NO_WRITES) \ | |
58 | { \ | |
59 | S->_flags |= _IO_ERR_SEEN; \ | |
60 | __set_errno (EBADF); \ | |
61 | return -1; \ | |
62 | } \ | |
63 | if (Format == NULL) \ | |
64 | { \ | |
65 | __set_errno (EINVAL); \ | |
66 | return -1; \ | |
67 | } \ | |
68 | } while (0) | |
69 | #define UNBUFFERED_P(S) ((S)->_flags & _IO_UNBUFFERED) | |
70 | ||
71 | #define done_add(val) \ | |
72 | do { \ | |
73 | unsigned int _val = val; \ | |
74 | assert ((unsigned int) done < (unsigned int) INT_MAX); \ | |
75 | if (__glibc_unlikely (INT_MAX - done < _val)) \ | |
76 | { \ | |
77 | done = -1; \ | |
78 | __set_errno (EOVERFLOW); \ | |
79 | goto all_done; \ | |
80 | } \ | |
81 | done += _val; \ | |
82 | } while (0) | |
83 | ||
84 | #ifndef COMPILE_WPRINTF | |
85 | # define vfprintf __vfprintf_internal | |
86 | # define CHAR_T char | |
87 | # define UCHAR_T unsigned char | |
88 | # define INT_T int | |
89 | typedef const char *THOUSANDS_SEP_T; | |
90 | # define L_(Str) Str | |
91 | # define ISDIGIT(Ch) ((unsigned int) ((Ch) - '0') < 10) | |
92 | # define STR_LEN(Str) strlen (Str) | |
93 | ||
94 | # define PUT(F, S, N) _IO_sputn ((F), (S), (N)) | |
95 | # define PAD(Padchar) \ | |
96 | do { \ | |
97 | if (width > 0) \ | |
98 | { \ | |
99 | ssize_t written = _IO_padn (s, (Padchar), width); \ | |
100 | if (__glibc_unlikely (written != width)) \ | |
101 | { \ | |
102 | done = -1; \ | |
103 | goto all_done; \ | |
104 | } \ | |
105 | done_add (written); \ | |
106 | } \ | |
107 | } while (0) | |
108 | # define PUTC(C, F) _IO_putc_unlocked (C, F) | |
109 | # define ORIENT if (_IO_vtable_offset (s) == 0 && _IO_fwide (s, -1) != -1)\ | |
110 | return -1 | |
111 | #else | |
112 | # define vfprintf __vfwprintf_internal | |
113 | # define CHAR_T wchar_t | |
114 | /* This is a hack!!! There should be a type uwchar_t. */ | |
115 | # define UCHAR_T unsigned int /* uwchar_t */ | |
116 | # define INT_T wint_t | |
117 | typedef wchar_t THOUSANDS_SEP_T; | |
118 | # define L_(Str) L##Str | |
119 | # define ISDIGIT(Ch) ((unsigned int) ((Ch) - L'0') < 10) | |
120 | # define STR_LEN(Str) __wcslen (Str) | |
121 | ||
122 | # include <_itowa.h> | |
123 | ||
124 | # define PUT(F, S, N) _IO_sputn ((F), (S), (N)) | |
125 | # define PAD(Padchar) \ | |
126 | do { \ | |
127 | if (width > 0) \ | |
128 | { \ | |
129 | ssize_t written = _IO_wpadn (s, (Padchar), width); \ | |
130 | if (__glibc_unlikely (written != width)) \ | |
131 | { \ | |
132 | done = -1; \ | |
133 | goto all_done; \ | |
134 | } \ | |
135 | done_add (written); \ | |
136 | } \ | |
137 | } while (0) | |
138 | # define PUTC(C, F) _IO_putwc_unlocked (C, F) | |
139 | # define ORIENT if (_IO_fwide (s, 1) != 1) return -1 | |
140 | ||
141 | # undef _itoa | |
142 | # define _itoa(Val, Buf, Base, Case) _itowa (Val, Buf, Base, Case) | |
143 | # define _itoa_word(Val, Buf, Base, Case) _itowa_word (Val, Buf, Base, Case) | |
144 | # undef EOF | |
145 | # define EOF WEOF | |
146 | #endif | |
147 | ||
148 | #include "_i18n_number.h" | |
149 | ||
150 | /* Include the shared code for parsing the format string. */ | |
151 | #include "printf-parse.h" | |
152 | ||
153 | ||
154 | #define outchar(Ch) \ | |
155 | do \ | |
156 | { \ | |
157 | const INT_T outc = (Ch); \ | |
158 | if (PUTC (outc, s) == EOF || done == INT_MAX) \ | |
159 | { \ | |
160 | done = -1; \ | |
161 | goto all_done; \ | |
162 | } \ | |
163 | ++done; \ | |
164 | } \ | |
165 | while (0) | |
166 | ||
167 | #define outstring(String, Len) \ | |
168 | do \ | |
169 | { \ | |
170 | assert ((size_t) done <= (size_t) INT_MAX); \ | |
171 | if ((size_t) PUT (s, (String), (Len)) != (size_t) (Len)) \ | |
172 | { \ | |
173 | done = -1; \ | |
174 | goto all_done; \ | |
175 | } \ | |
176 | if (__glibc_unlikely (INT_MAX - done < (Len))) \ | |
177 | { \ | |
178 | done = -1; \ | |
179 | __set_errno (EOVERFLOW); \ | |
180 | goto all_done; \ | |
181 | } \ | |
182 | done += (Len); \ | |
183 | } \ | |
184 | while (0) | |
185 | ||
186 | /* For handling long_double and longlong we use the same flag. If | |
187 | `long' and `long long' are effectively the same type define it to | |
188 | zero. */ | |
189 | #if LONG_MAX == LONG_LONG_MAX | |
190 | # define is_longlong 0 | |
191 | #else | |
192 | # define is_longlong is_long_double | |
193 | #endif | |
194 | ||
195 | /* If `long' and `int' is effectively the same type we don't have to | |
196 | handle `long separately. */ | |
197 | #if INT_MAX == LONG_MAX | |
198 | # define is_long_num 0 | |
199 | #else | |
200 | # define is_long_num is_long | |
201 | #endif | |
202 | ||
203 | ||
204 | /* Global constants. */ | |
205 | static const CHAR_T null[] = L_("(null)"); | |
206 | ||
207 | /* Size of the work_buffer variable (in characters, not bytes. */ | |
208 | enum { WORK_BUFFER_SIZE = 1000 / sizeof (CHAR_T) }; | |
209 | ||
210 | /* This table maps a character into a number representing a class. In | |
211 | each step there is a destination label for each class. */ | |
212 | static const uint8_t jump_table[] = | |
213 | { | |
214 | /* ' ' */ 1, 0, 0, /* '#' */ 4, | |
215 | 0, /* '%' */ 14, 0, /* '\''*/ 6, | |
216 | 0, 0, /* '*' */ 7, /* '+' */ 2, | |
217 | 0, /* '-' */ 3, /* '.' */ 9, 0, | |
218 | /* '0' */ 5, /* '1' */ 8, /* '2' */ 8, /* '3' */ 8, | |
219 | /* '4' */ 8, /* '5' */ 8, /* '6' */ 8, /* '7' */ 8, | |
220 | /* '8' */ 8, /* '9' */ 8, 0, 0, | |
221 | 0, 0, 0, 0, | |
222 | 0, /* 'A' */ 26, 0, /* 'C' */ 25, | |
223 | 0, /* 'E' */ 19, /* F */ 19, /* 'G' */ 19, | |
224 | 0, /* 'I' */ 29, 0, 0, | |
225 | /* 'L' */ 12, 0, 0, 0, | |
226 | 0, 0, 0, /* 'S' */ 21, | |
227 | 0, 0, 0, 0, | |
228 | /* 'X' */ 18, 0, /* 'Z' */ 13, 0, | |
229 | 0, 0, 0, 0, | |
230 | 0, /* 'a' */ 26, 0, /* 'c' */ 20, | |
231 | /* 'd' */ 15, /* 'e' */ 19, /* 'f' */ 19, /* 'g' */ 19, | |
232 | /* 'h' */ 10, /* 'i' */ 15, /* 'j' */ 28, 0, | |
233 | /* 'l' */ 11, /* 'm' */ 24, /* 'n' */ 23, /* 'o' */ 17, | |
234 | /* 'p' */ 22, /* 'q' */ 12, 0, /* 's' */ 21, | |
235 | /* 't' */ 27, /* 'u' */ 16, 0, 0, | |
236 | /* 'x' */ 18, 0, /* 'z' */ 13 | |
237 | }; | |
238 | ||
239 | #define NOT_IN_JUMP_RANGE(Ch) ((Ch) < L_(' ') || (Ch) > L_('z')) | |
240 | #define CHAR_CLASS(Ch) (jump_table[(INT_T) (Ch) - L_(' ')]) | |
241 | #define LABEL(Name) do_##Name | |
242 | #ifdef SHARED | |
243 | /* 'int' is enough and it saves some space on 64 bit systems. */ | |
244 | # define JUMP_TABLE_TYPE const int | |
245 | # define JUMP_TABLE_BASE_LABEL do_form_unknown | |
246 | # define REF(Name) &&do_##Name - &&JUMP_TABLE_BASE_LABEL | |
247 | # define JUMP(ChExpr, table) \ | |
248 | do \ | |
249 | { \ | |
250 | int offset; \ | |
251 | void *ptr; \ | |
252 | spec = (ChExpr); \ | |
253 | offset = NOT_IN_JUMP_RANGE (spec) ? REF (form_unknown) \ | |
254 | : table[CHAR_CLASS (spec)]; \ | |
255 | ptr = &&JUMP_TABLE_BASE_LABEL + offset; \ | |
256 | goto *ptr; \ | |
257 | } \ | |
258 | while (0) | |
259 | #else | |
260 | # define JUMP_TABLE_TYPE const void *const | |
261 | # define REF(Name) &&do_##Name | |
262 | # define JUMP(ChExpr, table) \ | |
263 | do \ | |
264 | { \ | |
265 | const void *ptr; \ | |
266 | spec = (ChExpr); \ | |
267 | ptr = NOT_IN_JUMP_RANGE (spec) ? REF (form_unknown) \ | |
268 | : table[CHAR_CLASS (spec)]; \ | |
269 | goto *ptr; \ | |
270 | } \ | |
271 | while (0) | |
272 | #endif | |
273 | ||
274 | #define STEP0_3_TABLE \ | |
275 | /* Step 0: at the beginning. */ \ | |
276 | static JUMP_TABLE_TYPE step0_jumps[30] = \ | |
277 | { \ | |
278 | REF (form_unknown), \ | |
279 | REF (flag_space), /* for ' ' */ \ | |
280 | REF (flag_plus), /* for '+' */ \ | |
281 | REF (flag_minus), /* for '-' */ \ | |
282 | REF (flag_hash), /* for '<hash>' */ \ | |
283 | REF (flag_zero), /* for '0' */ \ | |
284 | REF (flag_quote), /* for '\'' */ \ | |
285 | REF (width_asterics), /* for '*' */ \ | |
286 | REF (width), /* for '1'...'9' */ \ | |
287 | REF (precision), /* for '.' */ \ | |
288 | REF (mod_half), /* for 'h' */ \ | |
289 | REF (mod_long), /* for 'l' */ \ | |
290 | REF (mod_longlong), /* for 'L', 'q' */ \ | |
291 | REF (mod_size_t), /* for 'z', 'Z' */ \ | |
292 | REF (form_percent), /* for '%' */ \ | |
293 | REF (form_integer), /* for 'd', 'i' */ \ | |
294 | REF (form_unsigned), /* for 'u' */ \ | |
295 | REF (form_octal), /* for 'o' */ \ | |
296 | REF (form_hexa), /* for 'X', 'x' */ \ | |
297 | REF (form_float), /* for 'E', 'e', 'F', 'f', 'G', 'g' */ \ | |
298 | REF (form_character), /* for 'c' */ \ | |
299 | REF (form_string), /* for 's', 'S' */ \ | |
300 | REF (form_pointer), /* for 'p' */ \ | |
301 | REF (form_number), /* for 'n' */ \ | |
302 | REF (form_strerror), /* for 'm' */ \ | |
303 | REF (form_wcharacter), /* for 'C' */ \ | |
304 | REF (form_floathex), /* for 'A', 'a' */ \ | |
305 | REF (mod_ptrdiff_t), /* for 't' */ \ | |
306 | REF (mod_intmax_t), /* for 'j' */ \ | |
307 | REF (flag_i18n), /* for 'I' */ \ | |
308 | }; \ | |
309 | /* Step 1: after processing width. */ \ | |
310 | static JUMP_TABLE_TYPE step1_jumps[30] = \ | |
311 | { \ | |
312 | REF (form_unknown), \ | |
313 | REF (form_unknown), /* for ' ' */ \ | |
314 | REF (form_unknown), /* for '+' */ \ | |
315 | REF (form_unknown), /* for '-' */ \ | |
316 | REF (form_unknown), /* for '<hash>' */ \ | |
317 | REF (form_unknown), /* for '0' */ \ | |
318 | REF (form_unknown), /* for '\'' */ \ | |
319 | REF (form_unknown), /* for '*' */ \ | |
320 | REF (form_unknown), /* for '1'...'9' */ \ | |
321 | REF (precision), /* for '.' */ \ | |
322 | REF (mod_half), /* for 'h' */ \ | |
323 | REF (mod_long), /* for 'l' */ \ | |
324 | REF (mod_longlong), /* for 'L', 'q' */ \ | |
325 | REF (mod_size_t), /* for 'z', 'Z' */ \ | |
326 | REF (form_percent), /* for '%' */ \ | |
327 | REF (form_integer), /* for 'd', 'i' */ \ | |
328 | REF (form_unsigned), /* for 'u' */ \ | |
329 | REF (form_octal), /* for 'o' */ \ | |
330 | REF (form_hexa), /* for 'X', 'x' */ \ | |
331 | REF (form_float), /* for 'E', 'e', 'F', 'f', 'G', 'g' */ \ | |
332 | REF (form_character), /* for 'c' */ \ | |
333 | REF (form_string), /* for 's', 'S' */ \ | |
334 | REF (form_pointer), /* for 'p' */ \ | |
335 | REF (form_number), /* for 'n' */ \ | |
336 | REF (form_strerror), /* for 'm' */ \ | |
337 | REF (form_wcharacter), /* for 'C' */ \ | |
338 | REF (form_floathex), /* for 'A', 'a' */ \ | |
339 | REF (mod_ptrdiff_t), /* for 't' */ \ | |
340 | REF (mod_intmax_t), /* for 'j' */ \ | |
341 | REF (form_unknown) /* for 'I' */ \ | |
342 | }; \ | |
343 | /* Step 2: after processing precision. */ \ | |
344 | static JUMP_TABLE_TYPE step2_jumps[30] = \ | |
345 | { \ | |
346 | REF (form_unknown), \ | |
347 | REF (form_unknown), /* for ' ' */ \ | |
348 | REF (form_unknown), /* for '+' */ \ | |
349 | REF (form_unknown), /* for '-' */ \ | |
350 | REF (form_unknown), /* for '<hash>' */ \ | |
351 | REF (form_unknown), /* for '0' */ \ | |
352 | REF (form_unknown), /* for '\'' */ \ | |
353 | REF (form_unknown), /* for '*' */ \ | |
354 | REF (form_unknown), /* for '1'...'9' */ \ | |
355 | REF (form_unknown), /* for '.' */ \ | |
356 | REF (mod_half), /* for 'h' */ \ | |
357 | REF (mod_long), /* for 'l' */ \ | |
358 | REF (mod_longlong), /* for 'L', 'q' */ \ | |
359 | REF (mod_size_t), /* for 'z', 'Z' */ \ | |
360 | REF (form_percent), /* for '%' */ \ | |
361 | REF (form_integer), /* for 'd', 'i' */ \ | |
362 | REF (form_unsigned), /* for 'u' */ \ | |
363 | REF (form_octal), /* for 'o' */ \ | |
364 | REF (form_hexa), /* for 'X', 'x' */ \ | |
365 | REF (form_float), /* for 'E', 'e', 'F', 'f', 'G', 'g' */ \ | |
366 | REF (form_character), /* for 'c' */ \ | |
367 | REF (form_string), /* for 's', 'S' */ \ | |
368 | REF (form_pointer), /* for 'p' */ \ | |
369 | REF (form_number), /* for 'n' */ \ | |
370 | REF (form_strerror), /* for 'm' */ \ | |
371 | REF (form_wcharacter), /* for 'C' */ \ | |
372 | REF (form_floathex), /* for 'A', 'a' */ \ | |
373 | REF (mod_ptrdiff_t), /* for 't' */ \ | |
374 | REF (mod_intmax_t), /* for 'j' */ \ | |
375 | REF (form_unknown) /* for 'I' */ \ | |
376 | }; \ | |
377 | /* Step 3a: after processing first 'h' modifier. */ \ | |
378 | static JUMP_TABLE_TYPE step3a_jumps[30] = \ | |
379 | { \ | |
380 | REF (form_unknown), \ | |
381 | REF (form_unknown), /* for ' ' */ \ | |
382 | REF (form_unknown), /* for '+' */ \ | |
383 | REF (form_unknown), /* for '-' */ \ | |
384 | REF (form_unknown), /* for '<hash>' */ \ | |
385 | REF (form_unknown), /* for '0' */ \ | |
386 | REF (form_unknown), /* for '\'' */ \ | |
387 | REF (form_unknown), /* for '*' */ \ | |
388 | REF (form_unknown), /* for '1'...'9' */ \ | |
389 | REF (form_unknown), /* for '.' */ \ | |
390 | REF (mod_halfhalf), /* for 'h' */ \ | |
391 | REF (form_unknown), /* for 'l' */ \ | |
392 | REF (form_unknown), /* for 'L', 'q' */ \ | |
393 | REF (form_unknown), /* for 'z', 'Z' */ \ | |
394 | REF (form_percent), /* for '%' */ \ | |
395 | REF (form_integer), /* for 'd', 'i' */ \ | |
396 | REF (form_unsigned), /* for 'u' */ \ | |
397 | REF (form_octal), /* for 'o' */ \ | |
398 | REF (form_hexa), /* for 'X', 'x' */ \ | |
399 | REF (form_unknown), /* for 'E', 'e', 'F', 'f', 'G', 'g' */ \ | |
400 | REF (form_unknown), /* for 'c' */ \ | |
401 | REF (form_unknown), /* for 's', 'S' */ \ | |
402 | REF (form_unknown), /* for 'p' */ \ | |
403 | REF (form_number), /* for 'n' */ \ | |
404 | REF (form_unknown), /* for 'm' */ \ | |
405 | REF (form_unknown), /* for 'C' */ \ | |
406 | REF (form_unknown), /* for 'A', 'a' */ \ | |
407 | REF (form_unknown), /* for 't' */ \ | |
408 | REF (form_unknown), /* for 'j' */ \ | |
409 | REF (form_unknown) /* for 'I' */ \ | |
410 | }; \ | |
411 | /* Step 3b: after processing first 'l' modifier. */ \ | |
412 | static JUMP_TABLE_TYPE step3b_jumps[30] = \ | |
413 | { \ | |
414 | REF (form_unknown), \ | |
415 | REF (form_unknown), /* for ' ' */ \ | |
416 | REF (form_unknown), /* for '+' */ \ | |
417 | REF (form_unknown), /* for '-' */ \ | |
418 | REF (form_unknown), /* for '<hash>' */ \ | |
419 | REF (form_unknown), /* for '0' */ \ | |
420 | REF (form_unknown), /* for '\'' */ \ | |
421 | REF (form_unknown), /* for '*' */ \ | |
422 | REF (form_unknown), /* for '1'...'9' */ \ | |
423 | REF (form_unknown), /* for '.' */ \ | |
424 | REF (form_unknown), /* for 'h' */ \ | |
425 | REF (mod_longlong), /* for 'l' */ \ | |
426 | REF (form_unknown), /* for 'L', 'q' */ \ | |
427 | REF (form_unknown), /* for 'z', 'Z' */ \ | |
428 | REF (form_percent), /* for '%' */ \ | |
429 | REF (form_integer), /* for 'd', 'i' */ \ | |
430 | REF (form_unsigned), /* for 'u' */ \ | |
431 | REF (form_octal), /* for 'o' */ \ | |
432 | REF (form_hexa), /* for 'X', 'x' */ \ | |
433 | REF (form_float), /* for 'E', 'e', 'F', 'f', 'G', 'g' */ \ | |
434 | REF (form_character), /* for 'c' */ \ | |
435 | REF (form_string), /* for 's', 'S' */ \ | |
436 | REF (form_pointer), /* for 'p' */ \ | |
437 | REF (form_number), /* for 'n' */ \ | |
438 | REF (form_strerror), /* for 'm' */ \ | |
439 | REF (form_wcharacter), /* for 'C' */ \ | |
440 | REF (form_floathex), /* for 'A', 'a' */ \ | |
441 | REF (form_unknown), /* for 't' */ \ | |
442 | REF (form_unknown), /* for 'j' */ \ | |
443 | REF (form_unknown) /* for 'I' */ \ | |
444 | } | |
445 | ||
446 | #define STEP4_TABLE \ | |
447 | /* Step 4: processing format specifier. */ \ | |
448 | static JUMP_TABLE_TYPE step4_jumps[30] = \ | |
449 | { \ | |
450 | REF (form_unknown), \ | |
451 | REF (form_unknown), /* for ' ' */ \ | |
452 | REF (form_unknown), /* for '+' */ \ | |
453 | REF (form_unknown), /* for '-' */ \ | |
454 | REF (form_unknown), /* for '<hash>' */ \ | |
455 | REF (form_unknown), /* for '0' */ \ | |
456 | REF (form_unknown), /* for '\'' */ \ | |
457 | REF (form_unknown), /* for '*' */ \ | |
458 | REF (form_unknown), /* for '1'...'9' */ \ | |
459 | REF (form_unknown), /* for '.' */ \ | |
460 | REF (form_unknown), /* for 'h' */ \ | |
461 | REF (form_unknown), /* for 'l' */ \ | |
462 | REF (form_unknown), /* for 'L', 'q' */ \ | |
463 | REF (form_unknown), /* for 'z', 'Z' */ \ | |
464 | REF (form_percent), /* for '%' */ \ | |
465 | REF (form_integer), /* for 'd', 'i' */ \ | |
466 | REF (form_unsigned), /* for 'u' */ \ | |
467 | REF (form_octal), /* for 'o' */ \ | |
468 | REF (form_hexa), /* for 'X', 'x' */ \ | |
469 | REF (form_float), /* for 'E', 'e', 'F', 'f', 'G', 'g' */ \ | |
470 | REF (form_character), /* for 'c' */ \ | |
471 | REF (form_string), /* for 's', 'S' */ \ | |
472 | REF (form_pointer), /* for 'p' */ \ | |
473 | REF (form_number), /* for 'n' */ \ | |
474 | REF (form_strerror), /* for 'm' */ \ | |
475 | REF (form_wcharacter), /* for 'C' */ \ | |
476 | REF (form_floathex), /* for 'A', 'a' */ \ | |
477 | REF (form_unknown), /* for 't' */ \ | |
478 | REF (form_unknown), /* for 'j' */ \ | |
479 | REF (form_unknown) /* for 'I' */ \ | |
480 | } | |
481 | ||
482 | ||
483 | #define process_arg(fspec) \ | |
484 | /* Start real work. We know about all flags and modifiers and \ | |
485 | now process the wanted format specifier. */ \ | |
486 | LABEL (form_percent): \ | |
487 | /* Write a literal "%". */ \ | |
488 | outchar (L_('%')); \ | |
489 | break; \ | |
490 | \ | |
491 | LABEL (form_integer): \ | |
492 | /* Signed decimal integer. */ \ | |
493 | base = 10; \ | |
494 | \ | |
495 | if (is_longlong) \ | |
496 | { \ | |
497 | long long int signed_number; \ | |
498 | \ | |
499 | if (fspec == NULL) \ | |
500 | signed_number = va_arg (ap, long long int); \ | |
501 | else \ | |
502 | signed_number = args_value[fspec->data_arg].pa_long_long_int; \ | |
503 | \ | |
504 | is_negative = signed_number < 0; \ | |
505 | number.longlong = is_negative ? (- signed_number) : signed_number; \ | |
506 | \ | |
507 | goto LABEL (longlong_number); \ | |
508 | } \ | |
509 | else \ | |
510 | { \ | |
511 | long int signed_number; \ | |
512 | \ | |
513 | if (fspec == NULL) \ | |
514 | { \ | |
515 | if (is_long_num) \ | |
516 | signed_number = va_arg (ap, long int); \ | |
517 | else if (is_char) \ | |
518 | signed_number = (signed char) va_arg (ap, unsigned int); \ | |
519 | else if (!is_short) \ | |
520 | signed_number = va_arg (ap, int); \ | |
521 | else \ | |
522 | signed_number = (short int) va_arg (ap, unsigned int); \ | |
523 | } \ | |
524 | else \ | |
525 | if (is_long_num) \ | |
526 | signed_number = args_value[fspec->data_arg].pa_long_int; \ | |
527 | else if (is_char) \ | |
528 | signed_number = (signed char) \ | |
529 | args_value[fspec->data_arg].pa_u_int; \ | |
530 | else if (!is_short) \ | |
531 | signed_number = args_value[fspec->data_arg].pa_int; \ | |
532 | else \ | |
533 | signed_number = (short int) \ | |
534 | args_value[fspec->data_arg].pa_u_int; \ | |
535 | \ | |
536 | is_negative = signed_number < 0; \ | |
537 | number.word = is_negative ? (- signed_number) : signed_number; \ | |
538 | \ | |
539 | goto LABEL (number); \ | |
540 | } \ | |
541 | /* NOTREACHED */ \ | |
542 | \ | |
543 | LABEL (form_unsigned): \ | |
544 | /* Unsigned decimal integer. */ \ | |
545 | base = 10; \ | |
546 | goto LABEL (unsigned_number); \ | |
547 | /* NOTREACHED */ \ | |
548 | \ | |
549 | LABEL (form_octal): \ | |
550 | /* Unsigned octal integer. */ \ | |
551 | base = 8; \ | |
552 | goto LABEL (unsigned_number); \ | |
553 | /* NOTREACHED */ \ | |
554 | \ | |
555 | LABEL (form_hexa): \ | |
556 | /* Unsigned hexadecimal integer. */ \ | |
557 | base = 16; \ | |
558 | \ | |
559 | LABEL (unsigned_number): /* Unsigned number of base BASE. */ \ | |
560 | \ | |
561 | /* ISO specifies the `+' and ` ' flags only for signed \ | |
562 | conversions. */ \ | |
563 | is_negative = 0; \ | |
564 | showsign = 0; \ | |
565 | space = 0; \ | |
566 | \ | |
567 | if (is_longlong) \ | |
568 | { \ | |
569 | if (fspec == NULL) \ | |
570 | number.longlong = va_arg (ap, unsigned long long int); \ | |
571 | else \ | |
572 | number.longlong = args_value[fspec->data_arg].pa_u_long_long_int; \ | |
573 | \ | |
574 | LABEL (longlong_number): \ | |
575 | if (prec < 0) \ | |
576 | /* Supply a default precision if none was given. */ \ | |
577 | prec = 1; \ | |
578 | else \ | |
579 | /* We have to take care for the '0' flag. If a precision \ | |
580 | is given it must be ignored. */ \ | |
581 | pad = L_(' '); \ | |
582 | \ | |
583 | /* If the precision is 0 and the number is 0 nothing has to \ | |
584 | be written for the number, except for the 'o' format in \ | |
585 | alternate form. */ \ | |
586 | if (prec == 0 && number.longlong == 0) \ | |
587 | { \ | |
588 | string = workend; \ | |
589 | if (base == 8 && alt) \ | |
590 | *--string = L_('0'); \ | |
591 | } \ | |
592 | else \ | |
593 | { \ | |
594 | /* Put the number in WORK. */ \ | |
595 | string = _itoa (number.longlong, workend, base, \ | |
596 | spec == L_('X')); \ | |
597 | if (group && grouping) \ | |
598 | string = group_number (work_buffer, string, workend, \ | |
599 | grouping, thousands_sep); \ | |
600 | if (use_outdigits && base == 10) \ | |
601 | string = _i18n_number_rewrite (string, workend, workend); \ | |
602 | } \ | |
603 | /* Simplify further test for num != 0. */ \ | |
604 | number.word = number.longlong != 0; \ | |
605 | } \ | |
606 | else \ | |
607 | { \ | |
608 | if (fspec == NULL) \ | |
609 | { \ | |
610 | if (is_long_num) \ | |
611 | number.word = va_arg (ap, unsigned long int); \ | |
612 | else if (is_char) \ | |
613 | number.word = (unsigned char) va_arg (ap, unsigned int); \ | |
614 | else if (!is_short) \ | |
615 | number.word = va_arg (ap, unsigned int); \ | |
616 | else \ | |
617 | number.word = (unsigned short int) va_arg (ap, unsigned int); \ | |
618 | } \ | |
619 | else \ | |
620 | if (is_long_num) \ | |
621 | number.word = args_value[fspec->data_arg].pa_u_long_int; \ | |
622 | else if (is_char) \ | |
623 | number.word = (unsigned char) \ | |
624 | args_value[fspec->data_arg].pa_u_int; \ | |
625 | else if (!is_short) \ | |
626 | number.word = args_value[fspec->data_arg].pa_u_int; \ | |
627 | else \ | |
628 | number.word = (unsigned short int) \ | |
629 | args_value[fspec->data_arg].pa_u_int; \ | |
630 | \ | |
631 | LABEL (number): \ | |
632 | if (prec < 0) \ | |
633 | /* Supply a default precision if none was given. */ \ | |
634 | prec = 1; \ | |
635 | else \ | |
636 | /* We have to take care for the '0' flag. If a precision \ | |
637 | is given it must be ignored. */ \ | |
638 | pad = L_(' '); \ | |
639 | \ | |
640 | /* If the precision is 0 and the number is 0 nothing has to \ | |
641 | be written for the number, except for the 'o' format in \ | |
642 | alternate form. */ \ | |
643 | if (prec == 0 && number.word == 0) \ | |
644 | { \ | |
645 | string = workend; \ | |
646 | if (base == 8 && alt) \ | |
647 | *--string = L_('0'); \ | |
648 | } \ | |
649 | else \ | |
650 | { \ | |
651 | /* Put the number in WORK. */ \ | |
652 | string = _itoa_word (number.word, workend, base, \ | |
653 | spec == L_('X')); \ | |
654 | if (group && grouping) \ | |
655 | string = group_number (work_buffer, string, workend, \ | |
656 | grouping, thousands_sep); \ | |
657 | if (use_outdigits && base == 10) \ | |
658 | string = _i18n_number_rewrite (string, workend, workend); \ | |
659 | } \ | |
660 | } \ | |
661 | \ | |
662 | if (prec <= workend - string && number.word != 0 && alt && base == 8) \ | |
663 | /* Add octal marker. */ \ | |
664 | *--string = L_('0'); \ | |
665 | \ | |
666 | prec = MAX (0, prec - (workend - string)); \ | |
667 | \ | |
668 | if (!left) \ | |
669 | { \ | |
670 | width -= workend - string + prec; \ | |
671 | \ | |
672 | if (number.word != 0 && alt && base == 16) \ | |
673 | /* Account for 0X hex marker. */ \ | |
674 | width -= 2; \ | |
675 | \ | |
676 | if (is_negative || showsign || space) \ | |
677 | --width; \ | |
678 | \ | |
679 | if (pad == L_(' ')) \ | |
680 | { \ | |
681 | PAD (L_(' ')); \ | |
682 | width = 0; \ | |
683 | } \ | |
684 | \ | |
685 | if (is_negative) \ | |
686 | outchar (L_('-')); \ | |
687 | else if (showsign) \ | |
688 | outchar (L_('+')); \ | |
689 | else if (space) \ | |
690 | outchar (L_(' ')); \ | |
691 | \ | |
692 | if (number.word != 0 && alt && base == 16) \ | |
693 | { \ | |
694 | outchar (L_('0')); \ | |
695 | outchar (spec); \ | |
696 | } \ | |
697 | \ | |
698 | width += prec; \ | |
699 | PAD (L_('0')); \ | |
700 | \ | |
701 | outstring (string, workend - string); \ | |
702 | \ | |
703 | break; \ | |
704 | } \ | |
705 | else \ | |
706 | { \ | |
707 | if (is_negative) \ | |
708 | { \ | |
709 | outchar (L_('-')); \ | |
710 | --width; \ | |
711 | } \ | |
712 | else if (showsign) \ | |
713 | { \ | |
714 | outchar (L_('+')); \ | |
715 | --width; \ | |
716 | } \ | |
717 | else if (space) \ | |
718 | { \ | |
719 | outchar (L_(' ')); \ | |
720 | --width; \ | |
721 | } \ | |
722 | \ | |
723 | if (number.word != 0 && alt && base == 16) \ | |
724 | { \ | |
725 | outchar (L_('0')); \ | |
726 | outchar (spec); \ | |
727 | width -= 2; \ | |
728 | } \ | |
729 | \ | |
730 | width -= workend - string + prec; \ | |
731 | \ | |
732 | if (prec > 0) \ | |
733 | { \ | |
734 | int temp = width; \ | |
735 | width = prec; \ | |
736 | PAD (L_('0')); \ | |
737 | width = temp; \ | |
738 | } \ | |
739 | \ | |
740 | outstring (string, workend - string); \ | |
741 | \ | |
742 | PAD (L_(' ')); \ | |
743 | break; \ | |
744 | } \ | |
745 | \ | |
746 | LABEL (form_float): \ | |
747 | { \ | |
748 | /* Floating-point number. This is handled by printf_fp.c. */ \ | |
749 | const void *ptr; \ | |
750 | int function_done; \ | |
751 | \ | |
752 | if (fspec == NULL) \ | |
753 | { \ | |
754 | if (__glibc_unlikely ((mode_flags & PRINTF_LDBL_IS_DBL) != 0)) \ | |
755 | is_long_double = 0; \ | |
756 | \ | |
757 | struct printf_info info = { .prec = prec, \ | |
758 | .width = width, \ | |
759 | .spec = spec, \ | |
760 | .is_long_double = is_long_double, \ | |
761 | .is_short = is_short, \ | |
762 | .is_long = is_long, \ | |
763 | .alt = alt, \ | |
764 | .space = space, \ | |
765 | .left = left, \ | |
766 | .showsign = showsign, \ | |
767 | .group = group, \ | |
768 | .pad = pad, \ | |
769 | .extra = 0, \ | |
770 | .i18n = use_outdigits, \ | |
771 | .wide = sizeof (CHAR_T) != 1, \ | |
772 | .is_binary128 = 0}; \ | |
773 | \ | |
774 | if (is_long_double) \ | |
775 | the_arg.pa_long_double = va_arg (ap, long double); \ | |
776 | else \ | |
777 | the_arg.pa_double = va_arg (ap, double); \ | |
778 | ptr = (const void *) &the_arg; \ | |
779 | \ | |
780 | function_done = __printf_fp (s, &info, &ptr); \ | |
781 | } \ | |
782 | else \ | |
783 | { \ | |
784 | ptr = (const void *) &args_value[fspec->data_arg]; \ | |
785 | if (__glibc_unlikely ((mode_flags & PRINTF_LDBL_IS_DBL) != 0)) \ | |
786 | { \ | |
787 | fspec->data_arg_type = PA_DOUBLE; \ | |
788 | fspec->info.is_long_double = 0; \ | |
789 | } \ | |
790 | /* Not supported by *printf functions. */ \ | |
791 | fspec->info.is_binary128 = 0; \ | |
792 | \ | |
793 | function_done = __printf_fp (s, &fspec->info, &ptr); \ | |
794 | } \ | |
795 | \ | |
796 | if (function_done < 0) \ | |
797 | { \ | |
798 | /* Error in print handler; up to handler to set errno. */ \ | |
799 | done = -1; \ | |
800 | goto all_done; \ | |
801 | } \ | |
802 | \ | |
803 | done_add (function_done); \ | |
804 | } \ | |
805 | break; \ | |
806 | \ | |
807 | LABEL (form_floathex): \ | |
808 | { \ | |
809 | /* Floating point number printed as hexadecimal number. */ \ | |
810 | const void *ptr; \ | |
811 | int function_done; \ | |
812 | \ | |
813 | if (fspec == NULL) \ | |
814 | { \ | |
815 | if (__glibc_unlikely ((mode_flags & PRINTF_LDBL_IS_DBL) != 0)) \ | |
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 | .wide = sizeof (CHAR_T) != 1, \ | |
832 | .is_binary128 = 0}; \ | |
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_fphex (s, &info, &ptr); \ | |
841 | } \ | |
842 | else \ | |
843 | { \ | |
844 | ptr = (const void *) &args_value[fspec->data_arg]; \ | |
845 | if (__glibc_unlikely ((mode_flags & PRINTF_LDBL_IS_DBL) != 0)) \ | |
846 | fspec->info.is_long_double = 0; \ | |
847 | /* Not supported by *printf functions. */ \ | |
848 | fspec->info.is_binary128 = 0; \ | |
849 | \ | |
850 | function_done = __printf_fphex (s, &fspec->info, &ptr); \ | |
851 | } \ | |
852 | \ | |
853 | if (function_done < 0) \ | |
854 | { \ | |
855 | /* Error in print handler; up to handler to set errno. */ \ | |
856 | done = -1; \ | |
857 | goto all_done; \ | |
858 | } \ | |
859 | \ | |
860 | done_add (function_done); \ | |
861 | } \ | |
862 | break; \ | |
863 | \ | |
864 | LABEL (form_pointer): \ | |
865 | /* Generic pointer. */ \ | |
866 | { \ | |
867 | const void *ptr; \ | |
868 | if (fspec == NULL) \ | |
869 | ptr = va_arg (ap, void *); \ | |
870 | else \ | |
871 | ptr = args_value[fspec->data_arg].pa_pointer; \ | |
872 | if (ptr != NULL) \ | |
873 | { \ | |
874 | /* If the pointer is not NULL, write it as a %#x spec. */ \ | |
875 | base = 16; \ | |
876 | number.word = (unsigned long int) ptr; \ | |
877 | is_negative = 0; \ | |
878 | alt = 1; \ | |
879 | group = 0; \ | |
880 | spec = L_('x'); \ | |
881 | goto LABEL (number); \ | |
882 | } \ | |
883 | else \ | |
884 | { \ | |
885 | /* Write "(nil)" for a nil pointer. */ \ | |
886 | string = (CHAR_T *) L_("(nil)"); \ | |
887 | /* Make sure the full string "(nil)" is printed. */ \ | |
888 | if (prec < 5) \ | |
889 | prec = 5; \ | |
890 | /* This is a wide string iff compiling wprintf. */ \ | |
891 | is_long = sizeof (CHAR_T) > 1; \ | |
892 | goto LABEL (print_string); \ | |
893 | } \ | |
894 | } \ | |
895 | /* NOTREACHED */ \ | |
896 | \ | |
897 | LABEL (form_number): \ | |
898 | if ((mode_flags & PRINTF_FORTIFY) != 0) \ | |
899 | { \ | |
900 | if (! readonly_format) \ | |
901 | { \ | |
902 | extern int __readonly_area (const void *, size_t) \ | |
903 | attribute_hidden; \ | |
904 | readonly_format \ | |
905 | = __readonly_area (format, ((STR_LEN (format) + 1) \ | |
906 | * sizeof (CHAR_T))); \ | |
907 | } \ | |
908 | if (readonly_format < 0) \ | |
909 | __libc_fatal ("*** %n in writable segment detected ***\n"); \ | |
910 | } \ | |
911 | /* Answer the count of characters written. */ \ | |
912 | if (fspec == NULL) \ | |
913 | { \ | |
914 | if (is_longlong) \ | |
915 | *(long long int *) va_arg (ap, void *) = done; \ | |
916 | else if (is_long_num) \ | |
917 | *(long int *) va_arg (ap, void *) = done; \ | |
918 | else if (is_char) \ | |
919 | *(char *) va_arg (ap, void *) = done; \ | |
920 | else if (!is_short) \ | |
921 | *(int *) va_arg (ap, void *) = done; \ | |
922 | else \ | |
923 | *(short int *) va_arg (ap, void *) = done; \ | |
924 | } \ | |
925 | else \ | |
926 | if (is_longlong) \ | |
927 | *(long long int *) args_value[fspec->data_arg].pa_pointer = done; \ | |
928 | else if (is_long_num) \ | |
929 | *(long int *) args_value[fspec->data_arg].pa_pointer = done; \ | |
930 | else if (is_char) \ | |
931 | *(char *) args_value[fspec->data_arg].pa_pointer = done; \ | |
932 | else if (!is_short) \ | |
933 | *(int *) args_value[fspec->data_arg].pa_pointer = done; \ | |
934 | else \ | |
935 | *(short int *) args_value[fspec->data_arg].pa_pointer = done; \ | |
936 | break; \ | |
937 | \ | |
938 | LABEL (form_strerror): \ | |
939 | /* Print description of error ERRNO. */ \ | |
940 | string = \ | |
941 | (CHAR_T *) __strerror_r (save_errno, (char *) work_buffer, \ | |
942 | WORK_BUFFER_SIZE * sizeof (CHAR_T)); \ | |
943 | is_long = 0; /* This is no wide-char string. */ \ | |
944 | goto LABEL (print_string) | |
945 | ||
946 | #ifdef COMPILE_WPRINTF | |
947 | # define process_string_arg(fspec) \ | |
948 | LABEL (form_character): \ | |
949 | /* Character. */ \ | |
950 | if (is_long) \ | |
951 | goto LABEL (form_wcharacter); \ | |
952 | --width; /* Account for the character itself. */ \ | |
953 | if (!left) \ | |
954 | PAD (L' '); \ | |
955 | if (fspec == NULL) \ | |
956 | outchar (__btowc ((unsigned char) va_arg (ap, int))); /* Promoted. */ \ | |
957 | else \ | |
958 | outchar (__btowc ((unsigned char) \ | |
959 | args_value[fspec->data_arg].pa_int)); \ | |
960 | if (left) \ | |
961 | PAD (L' '); \ | |
962 | break; \ | |
963 | \ | |
964 | LABEL (form_wcharacter): \ | |
965 | { \ | |
966 | /* Wide character. */ \ | |
967 | --width; \ | |
968 | if (!left) \ | |
969 | PAD (L' '); \ | |
970 | if (fspec == NULL) \ | |
971 | outchar (va_arg (ap, wchar_t)); \ | |
972 | else \ | |
973 | outchar (args_value[fspec->data_arg].pa_wchar); \ | |
974 | if (left) \ | |
975 | PAD (L' '); \ | |
976 | } \ | |
977 | break; \ | |
978 | \ | |
979 | LABEL (form_string): \ | |
980 | { \ | |
981 | size_t len; \ | |
982 | int string_malloced; \ | |
983 | \ | |
984 | /* The string argument could in fact be `char *' or `wchar_t *'. \ | |
985 | But this should not make a difference here. */ \ | |
986 | if (fspec == NULL) \ | |
987 | string = (CHAR_T *) va_arg (ap, const wchar_t *); \ | |
988 | else \ | |
989 | string = (CHAR_T *) args_value[fspec->data_arg].pa_wstring; \ | |
990 | \ | |
991 | /* Entry point for printing other strings. */ \ | |
992 | LABEL (print_string): \ | |
993 | \ | |
994 | string_malloced = 0; \ | |
995 | if (string == NULL) \ | |
996 | { \ | |
997 | /* Write "(null)" if there's space. */ \ | |
998 | if (prec == -1 || prec >= (int) array_length (null) - 1) \ | |
999 | { \ | |
1000 | string = (CHAR_T *) null; \ | |
1001 | len = array_length (null) - 1; \ | |
1002 | } \ | |
1003 | else \ | |
1004 | { \ | |
1005 | string = (CHAR_T *) L""; \ | |
1006 | len = 0; \ | |
1007 | } \ | |
1008 | } \ | |
1009 | else if (!is_long && spec != L_('S')) \ | |
1010 | { \ | |
1011 | /* This is complicated. We have to transform the multibyte \ | |
1012 | string into a wide character string. */ \ | |
1013 | const char *mbs = (const char *) string; \ | |
1014 | mbstate_t mbstate; \ | |
1015 | \ | |
1016 | len = prec != -1 ? __strnlen (mbs, (size_t) prec) : strlen (mbs); \ | |
1017 | \ | |
1018 | /* Allocate dynamically an array which definitely is long \ | |
1019 | enough for the wide character version. Each byte in the \ | |
1020 | multi-byte string can produce at most one wide character. */ \ | |
1021 | if (__glibc_unlikely (len > SIZE_MAX / sizeof (wchar_t))) \ | |
1022 | { \ | |
1023 | __set_errno (EOVERFLOW); \ | |
1024 | done = -1; \ | |
1025 | goto all_done; \ | |
1026 | } \ | |
1027 | else if (__libc_use_alloca (len * sizeof (wchar_t))) \ | |
1028 | string = (CHAR_T *) alloca (len * sizeof (wchar_t)); \ | |
1029 | else if ((string = (CHAR_T *) malloc (len * sizeof (wchar_t))) \ | |
1030 | == NULL) \ | |
1031 | { \ | |
1032 | done = -1; \ | |
1033 | goto all_done; \ | |
1034 | } \ | |
1035 | else \ | |
1036 | string_malloced = 1; \ | |
1037 | \ | |
1038 | memset (&mbstate, '\0', sizeof (mbstate_t)); \ | |
1039 | len = __mbsrtowcs (string, &mbs, len, &mbstate); \ | |
1040 | if (len == (size_t) -1) \ | |
1041 | { \ | |
1042 | /* Illegal multibyte character. */ \ | |
1043 | done = -1; \ | |
1044 | goto all_done; \ | |
1045 | } \ | |
1046 | } \ | |
1047 | else \ | |
1048 | { \ | |
1049 | if (prec != -1) \ | |
1050 | /* Search for the end of the string, but don't search past \ | |
1051 | the length specified by the precision. */ \ | |
1052 | len = __wcsnlen (string, prec); \ | |
1053 | else \ | |
1054 | len = __wcslen (string); \ | |
1055 | } \ | |
1056 | \ | |
1057 | if ((width -= len) < 0) \ | |
1058 | { \ | |
1059 | outstring (string, len); \ | |
1060 | break; \ | |
1061 | } \ | |
1062 | \ | |
1063 | if (!left) \ | |
1064 | PAD (L' '); \ | |
1065 | outstring (string, len); \ | |
1066 | if (left) \ | |
1067 | PAD (L' '); \ | |
1068 | if (__glibc_unlikely (string_malloced)) \ | |
1069 | free (string); \ | |
1070 | } \ | |
1071 | break; | |
1072 | #else | |
1073 | # define process_string_arg(fspec) \ | |
1074 | LABEL (form_character): \ | |
1075 | /* Character. */ \ | |
1076 | if (is_long) \ | |
1077 | goto LABEL (form_wcharacter); \ | |
1078 | --width; /* Account for the character itself. */ \ | |
1079 | if (!left) \ | |
1080 | PAD (' '); \ | |
1081 | if (fspec == NULL) \ | |
1082 | outchar ((unsigned char) va_arg (ap, int)); /* Promoted. */ \ | |
1083 | else \ | |
1084 | outchar ((unsigned char) args_value[fspec->data_arg].pa_int); \ | |
1085 | if (left) \ | |
1086 | PAD (' '); \ | |
1087 | break; \ | |
1088 | \ | |
1089 | LABEL (form_wcharacter): \ | |
1090 | { \ | |
1091 | /* Wide character. */ \ | |
1092 | char buf[MB_LEN_MAX]; \ | |
1093 | mbstate_t mbstate; \ | |
1094 | size_t len; \ | |
1095 | \ | |
1096 | memset (&mbstate, '\0', sizeof (mbstate_t)); \ | |
1097 | len = __wcrtomb (buf, (fspec == NULL ? va_arg (ap, wchar_t) \ | |
1098 | : args_value[fspec->data_arg].pa_wchar), \ | |
1099 | &mbstate); \ | |
1100 | if (len == (size_t) -1) \ | |
1101 | { \ | |
1102 | /* Something went wrong during the conversion. Bail out. */ \ | |
1103 | done = -1; \ | |
1104 | goto all_done; \ | |
1105 | } \ | |
1106 | width -= len; \ | |
1107 | if (!left) \ | |
1108 | PAD (' '); \ | |
1109 | outstring (buf, len); \ | |
1110 | if (left) \ | |
1111 | PAD (' '); \ | |
1112 | } \ | |
1113 | break; \ | |
1114 | \ | |
1115 | LABEL (form_string): \ | |
1116 | { \ | |
1117 | size_t len; \ | |
1118 | int string_malloced; \ | |
1119 | \ | |
1120 | /* The string argument could in fact be `char *' or `wchar_t *'. \ | |
1121 | But this should not make a difference here. */ \ | |
1122 | if (fspec == NULL) \ | |
1123 | string = (char *) va_arg (ap, const char *); \ | |
1124 | else \ | |
1125 | string = (char *) args_value[fspec->data_arg].pa_string; \ | |
1126 | \ | |
1127 | /* Entry point for printing other strings. */ \ | |
1128 | LABEL (print_string): \ | |
1129 | \ | |
1130 | string_malloced = 0; \ | |
1131 | if (string == NULL) \ | |
1132 | { \ | |
1133 | /* Write "(null)" if there's space. */ \ | |
1134 | if (prec == -1 || prec >= (int) sizeof (null) - 1) \ | |
1135 | { \ | |
1136 | string = (char *) null; \ | |
1137 | len = sizeof (null) - 1; \ | |
1138 | } \ | |
1139 | else \ | |
1140 | { \ | |
1141 | string = (char *) ""; \ | |
1142 | len = 0; \ | |
1143 | } \ | |
1144 | } \ | |
1145 | else if (!is_long && spec != L_('S')) \ | |
1146 | { \ | |
1147 | if (prec != -1) \ | |
1148 | /* Search for the end of the string, but don't search past \ | |
1149 | the length (in bytes) specified by the precision. */ \ | |
1150 | len = __strnlen (string, prec); \ | |
1151 | else \ | |
1152 | len = strlen (string); \ | |
1153 | } \ | |
1154 | else \ | |
1155 | { \ | |
1156 | const wchar_t *s2 = (const wchar_t *) string; \ | |
1157 | mbstate_t mbstate; \ | |
1158 | \ | |
1159 | memset (&mbstate, '\0', sizeof (mbstate_t)); \ | |
1160 | \ | |
1161 | if (prec >= 0) \ | |
1162 | { \ | |
1163 | /* The string `s2' might not be NUL terminated. */ \ | |
1164 | if (__libc_use_alloca (prec)) \ | |
1165 | string = (char *) alloca (prec); \ | |
1166 | else if ((string = (char *) malloc (prec)) == NULL) \ | |
1167 | { \ | |
1168 | done = -1; \ | |
1169 | goto all_done; \ | |
1170 | } \ | |
1171 | else \ | |
1172 | string_malloced = 1; \ | |
1173 | len = __wcsrtombs (string, &s2, prec, &mbstate); \ | |
1174 | } \ | |
1175 | else \ | |
1176 | { \ | |
1177 | len = __wcsrtombs (NULL, &s2, 0, &mbstate); \ | |
1178 | if (len != (size_t) -1) \ | |
1179 | { \ | |
1180 | assert (__mbsinit (&mbstate)); \ | |
1181 | s2 = (const wchar_t *) string; \ | |
1182 | if (__libc_use_alloca (len + 1)) \ | |
1183 | string = (char *) alloca (len + 1); \ | |
1184 | else if ((string = (char *) malloc (len + 1)) == NULL) \ | |
1185 | { \ | |
1186 | done = -1; \ | |
1187 | goto all_done; \ | |
1188 | } \ | |
1189 | else \ | |
1190 | string_malloced = 1; \ | |
1191 | (void) __wcsrtombs (string, &s2, len + 1, &mbstate); \ | |
1192 | } \ | |
1193 | } \ | |
1194 | \ | |
1195 | if (len == (size_t) -1) \ | |
1196 | { \ | |
1197 | /* Illegal wide-character string. */ \ | |
1198 | done = -1; \ | |
1199 | goto all_done; \ | |
1200 | } \ | |
1201 | } \ | |
1202 | \ | |
1203 | if ((width -= len) < 0) \ | |
1204 | { \ | |
1205 | outstring (string, len); \ | |
1206 | break; \ | |
1207 | } \ | |
1208 | \ | |
1209 | if (!left) \ | |
1210 | PAD (' '); \ | |
1211 | outstring (string, len); \ | |
1212 | if (left) \ | |
1213 | PAD (' '); \ | |
1214 | if (__glibc_unlikely (string_malloced)) \ | |
1215 | free (string); \ | |
1216 | } \ | |
1217 | break; | |
1218 | #endif | |
1219 | ||
1220 | /* Helper function to provide temporary buffering for unbuffered streams. */ | |
1221 | static int buffered_vfprintf (FILE *stream, const CHAR_T *fmt, va_list, | |
1222 | unsigned int) | |
1223 | __THROW __attribute__ ((noinline)); | |
1224 | ||
1225 | /* Handle positional format specifiers. */ | |
1226 | static int printf_positional (FILE *s, | |
1227 | const CHAR_T *format, int readonly_format, | |
1228 | va_list ap, va_list *ap_savep, int done, | |
1229 | int nspecs_done, const UCHAR_T *lead_str_end, | |
1230 | CHAR_T *work_buffer, int save_errno, | |
1231 | const char *grouping, | |
1232 | THOUSANDS_SEP_T thousands_sep, | |
1233 | unsigned int mode_flags); | |
1234 | ||
1235 | /* Handle unknown format specifier. */ | |
1236 | static int printf_unknown (FILE *, const struct printf_info *, | |
1237 | const void *const *) __THROW; | |
1238 | ||
1239 | /* Group digits of number string. */ | |
1240 | static CHAR_T *group_number (CHAR_T *, CHAR_T *, CHAR_T *, const char *, | |
1241 | THOUSANDS_SEP_T); | |
1242 | ||
1243 | /* The function itself. */ | |
1244 | int | |
1245 | vfprintf (FILE *s, const CHAR_T *format, va_list ap, unsigned int mode_flags) | |
1246 | { | |
1247 | /* The character used as thousands separator. */ | |
1248 | THOUSANDS_SEP_T thousands_sep = 0; | |
1249 | ||
1250 | /* The string describing the size of groups of digits. */ | |
1251 | const char *grouping; | |
1252 | ||
1253 | /* Place to accumulate the result. */ | |
1254 | int done; | |
1255 | ||
1256 | /* Current character in format string. */ | |
1257 | const UCHAR_T *f; | |
1258 | ||
1259 | /* End of leading constant string. */ | |
1260 | const UCHAR_T *lead_str_end; | |
1261 | ||
1262 | /* Points to next format specifier. */ | |
1263 | const UCHAR_T *end_of_spec; | |
1264 | ||
1265 | /* Buffer intermediate results. */ | |
1266 | CHAR_T work_buffer[WORK_BUFFER_SIZE]; | |
1267 | CHAR_T *workstart = NULL; | |
1268 | CHAR_T *workend; | |
1269 | ||
1270 | /* We have to save the original argument pointer. */ | |
1271 | va_list ap_save; | |
1272 | ||
1273 | /* Count number of specifiers we already processed. */ | |
1274 | int nspecs_done; | |
1275 | ||
1276 | /* For the %m format we may need the current `errno' value. */ | |
1277 | int save_errno = errno; | |
1278 | ||
1279 | /* 1 if format is in read-only memory, -1 if it is in writable memory, | |
1280 | 0 if unknown. */ | |
1281 | int readonly_format = 0; | |
1282 | ||
698fb75b ZW |
1283 | /* Orient the stream. */ |
1284 | #ifdef ORIENT | |
1285 | ORIENT; | |
1286 | #endif | |
1287 | ||
1288 | /* Sanity check of arguments. */ | |
1289 | ARGCHECK (s, format); | |
1290 | ||
1291 | #ifdef ORIENT | |
1292 | /* Check for correct orientation. */ | |
1293 | if (_IO_vtable_offset (s) == 0 && | |
1294 | _IO_fwide (s, sizeof (CHAR_T) == 1 ? -1 : 1) | |
1295 | != (sizeof (CHAR_T) == 1 ? -1 : 1)) | |
1296 | /* The stream is already oriented otherwise. */ | |
1297 | return EOF; | |
1298 | #endif | |
1299 | ||
1300 | if (UNBUFFERED_P (s)) | |
1301 | /* Use a helper function which will allocate a local temporary buffer | |
1302 | for the stream and then call us again. */ | |
1303 | return buffered_vfprintf (s, format, ap, mode_flags); | |
1304 | ||
1305 | /* Initialize local variables. */ | |
1306 | done = 0; | |
1307 | grouping = (const char *) -1; | |
1308 | #ifdef __va_copy | |
1309 | /* This macro will be available soon in gcc's <stdarg.h>. We need it | |
1310 | since on some systems `va_list' is not an integral type. */ | |
1311 | __va_copy (ap_save, ap); | |
1312 | #else | |
1313 | ap_save = ap; | |
1314 | #endif | |
1315 | nspecs_done = 0; | |
1316 | ||
1317 | #ifdef COMPILE_WPRINTF | |
1318 | /* Find the first format specifier. */ | |
1319 | f = lead_str_end = __find_specwc ((const UCHAR_T *) format); | |
1320 | #else | |
1321 | /* Find the first format specifier. */ | |
1322 | f = lead_str_end = __find_specmb ((const UCHAR_T *) format); | |
1323 | #endif | |
1324 | ||
1325 | /* Lock stream. */ | |
1326 | _IO_cleanup_region_start ((void (*) (void *)) &_IO_funlockfile, s); | |
1327 | _IO_flockfile (s); | |
1328 | ||
1329 | /* Write the literal text before the first format. */ | |
1330 | outstring ((const UCHAR_T *) format, | |
1331 | lead_str_end - (const UCHAR_T *) format); | |
1332 | ||
1333 | /* If we only have to print a simple string, return now. */ | |
1334 | if (*f == L_('\0')) | |
1335 | goto all_done; | |
1336 | ||
1337 | /* Use the slow path in case any printf handler is registered. */ | |
1338 | if (__glibc_unlikely (__printf_function_table != NULL | |
1339 | || __printf_modifier_table != NULL | |
1340 | || __printf_va_arg_table != NULL)) | |
1341 | goto do_positional; | |
1342 | ||
1343 | /* Process whole format string. */ | |
1344 | do | |
1345 | { | |
1346 | STEP0_3_TABLE; | |
1347 | STEP4_TABLE; | |
1348 | ||
1349 | union printf_arg *args_value; /* This is not used here but ... */ | |
1350 | int is_negative; /* Flag for negative number. */ | |
1351 | union | |
1352 | { | |
1353 | unsigned long long int longlong; | |
1354 | unsigned long int word; | |
1355 | } number; | |
1356 | int base; | |
1357 | union printf_arg the_arg; | |
1358 | CHAR_T *string; /* Pointer to argument string. */ | |
1359 | int alt = 0; /* Alternate format. */ | |
1360 | int space = 0; /* Use space prefix if no sign is needed. */ | |
1361 | int left = 0; /* Left-justify output. */ | |
1362 | int showsign = 0; /* Always begin with plus or minus sign. */ | |
1363 | int group = 0; /* Print numbers according grouping rules. */ | |
1364 | int is_long_double = 0; /* Argument is long double/ long long int. */ | |
1365 | int is_short = 0; /* Argument is short int. */ | |
1366 | int is_long = 0; /* Argument is long int. */ | |
1367 | int is_char = 0; /* Argument is promoted (unsigned) char. */ | |
1368 | int width = 0; /* Width of output; 0 means none specified. */ | |
1369 | int prec = -1; /* Precision of output; -1 means none specified. */ | |
1370 | /* This flag is set by the 'I' modifier and selects the use of the | |
1371 | `outdigits' as determined by the current locale. */ | |
1372 | int use_outdigits = 0; | |
1373 | UCHAR_T pad = L_(' ');/* Padding character. */ | |
1374 | CHAR_T spec; | |
1375 | ||
1376 | workstart = NULL; | |
1377 | workend = work_buffer + WORK_BUFFER_SIZE; | |
1378 | ||
1379 | /* Get current character in format string. */ | |
1380 | JUMP (*++f, step0_jumps); | |
1381 | ||
1382 | /* ' ' flag. */ | |
1383 | LABEL (flag_space): | |
1384 | space = 1; | |
1385 | JUMP (*++f, step0_jumps); | |
1386 | ||
1387 | /* '+' flag. */ | |
1388 | LABEL (flag_plus): | |
1389 | showsign = 1; | |
1390 | JUMP (*++f, step0_jumps); | |
1391 | ||
1392 | /* The '-' flag. */ | |
1393 | LABEL (flag_minus): | |
1394 | left = 1; | |
1395 | pad = L_(' '); | |
1396 | JUMP (*++f, step0_jumps); | |
1397 | ||
1398 | /* The '#' flag. */ | |
1399 | LABEL (flag_hash): | |
1400 | alt = 1; | |
1401 | JUMP (*++f, step0_jumps); | |
1402 | ||
1403 | /* The '0' flag. */ | |
1404 | LABEL (flag_zero): | |
1405 | if (!left) | |
1406 | pad = L_('0'); | |
1407 | JUMP (*++f, step0_jumps); | |
1408 | ||
1409 | /* The '\'' flag. */ | |
1410 | LABEL (flag_quote): | |
1411 | group = 1; | |
1412 | ||
1413 | if (grouping == (const char *) -1) | |
1414 | { | |
1415 | #ifdef COMPILE_WPRINTF | |
1416 | thousands_sep = _NL_CURRENT_WORD (LC_NUMERIC, | |
1417 | _NL_NUMERIC_THOUSANDS_SEP_WC); | |
1418 | #else | |
1419 | thousands_sep = _NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP); | |
1420 | #endif | |
1421 | ||
1422 | grouping = _NL_CURRENT (LC_NUMERIC, GROUPING); | |
1423 | if (*grouping == '\0' || *grouping == CHAR_MAX | |
1424 | #ifdef COMPILE_WPRINTF | |
1425 | || thousands_sep == L'\0' | |
1426 | #else | |
1427 | || *thousands_sep == '\0' | |
1428 | #endif | |
1429 | ) | |
1430 | grouping = NULL; | |
1431 | } | |
1432 | JUMP (*++f, step0_jumps); | |
1433 | ||
1434 | LABEL (flag_i18n): | |
1435 | use_outdigits = 1; | |
1436 | JUMP (*++f, step0_jumps); | |
1437 | ||
1438 | /* Get width from argument. */ | |
1439 | LABEL (width_asterics): | |
1440 | { | |
1441 | const UCHAR_T *tmp; /* Temporary value. */ | |
1442 | ||
1443 | tmp = ++f; | |
1444 | if (ISDIGIT (*tmp)) | |
1445 | { | |
1446 | int pos = read_int (&tmp); | |
1447 | ||
1448 | if (pos == -1) | |
1449 | { | |
1450 | __set_errno (EOVERFLOW); | |
1451 | done = -1; | |
1452 | goto all_done; | |
1453 | } | |
1454 | ||
1455 | if (pos && *tmp == L_('$')) | |
1456 | /* The width comes from a positional parameter. */ | |
1457 | goto do_positional; | |
1458 | } | |
1459 | width = va_arg (ap, int); | |
1460 | ||
1461 | /* Negative width means left justified. */ | |
1462 | if (width < 0) | |
1463 | { | |
1464 | width = -width; | |
1465 | pad = L_(' '); | |
1466 | left = 1; | |
1467 | } | |
1468 | ||
1469 | if (__glibc_unlikely (width >= INT_MAX / sizeof (CHAR_T) - EXTSIZ)) | |
1470 | { | |
1471 | __set_errno (EOVERFLOW); | |
1472 | done = -1; | |
1473 | goto all_done; | |
1474 | } | |
1475 | ||
1476 | if (width >= WORK_BUFFER_SIZE - EXTSIZ) | |
1477 | { | |
1478 | /* We have to use a special buffer. */ | |
1479 | size_t needed = ((size_t) width + EXTSIZ) * sizeof (CHAR_T); | |
1480 | if (__libc_use_alloca (needed)) | |
1481 | workend = (CHAR_T *) alloca (needed) + width + EXTSIZ; | |
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 + EXTSIZ; | |
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) - EXTSIZ)) | |
1502 | { | |
1503 | __set_errno (EOVERFLOW); | |
1504 | done = -1; | |
1505 | goto all_done; | |
1506 | } | |
1507 | ||
1508 | if (width >= WORK_BUFFER_SIZE - EXTSIZ) | |
1509 | { | |
1510 | /* We have to use a special buffer. */ | |
1511 | size_t needed = ((size_t) width + EXTSIZ) * sizeof (CHAR_T); | |
1512 | if (__libc_use_alloca (needed)) | |
1513 | workend = (CHAR_T *) alloca (needed) + width + EXTSIZ; | |
1514 | else | |
1515 | { | |
1516 | workstart = (CHAR_T *) malloc (needed); | |
1517 | if (workstart == NULL) | |
1518 | { | |
1519 | done = -1; | |
1520 | goto all_done; | |
1521 | } | |
1522 | workend = workstart + width + EXTSIZ; | |
1523 | } | |
1524 | } | |
1525 | if (*f == L_('$')) | |
1526 | /* Oh, oh. The argument comes from a positional parameter. */ | |
1527 | goto do_positional; | |
1528 | JUMP (*f, step1_jumps); | |
1529 | ||
1530 | LABEL (precision): | |
1531 | ++f; | |
1532 | if (*f == L_('*')) | |
1533 | { | |
1534 | const UCHAR_T *tmp; /* Temporary value. */ | |
1535 | ||
1536 | tmp = ++f; | |
1537 | if (ISDIGIT (*tmp)) | |
1538 | { | |
1539 | int pos = read_int (&tmp); | |
1540 | ||
1541 | if (pos == -1) | |
1542 | { | |
1543 | __set_errno (EOVERFLOW); | |
1544 | done = -1; | |
1545 | goto all_done; | |
1546 | } | |
1547 | ||
1548 | if (pos && *tmp == L_('$')) | |
1549 | /* The precision comes from a positional parameter. */ | |
1550 | goto do_positional; | |
1551 | } | |
1552 | prec = va_arg (ap, int); | |
1553 | ||
1554 | /* If the precision is negative the precision is omitted. */ | |
1555 | if (prec < 0) | |
1556 | prec = -1; | |
1557 | } | |
1558 | else if (ISDIGIT (*f)) | |
1559 | { | |
1560 | prec = read_int (&f); | |
1561 | ||
1562 | /* The precision was specified in this case as an extremely | |
1563 | large positive value. */ | |
1564 | if (prec == -1) | |
1565 | { | |
1566 | __set_errno (EOVERFLOW); | |
1567 | done = -1; | |
1568 | goto all_done; | |
1569 | } | |
1570 | } | |
1571 | else | |
1572 | prec = 0; | |
1573 | if (prec > width && prec > WORK_BUFFER_SIZE - EXTSIZ) | |
1574 | { | |
1575 | /* Deallocate any previously allocated buffer because it is | |
1576 | too small. */ | |
1577 | if (__glibc_unlikely (workstart != NULL)) | |
1578 | free (workstart); | |
1579 | workstart = NULL; | |
1580 | if (__glibc_unlikely (prec >= INT_MAX / sizeof (CHAR_T) - EXTSIZ)) | |
1581 | { | |
1582 | __set_errno (EOVERFLOW); | |
1583 | done = -1; | |
1584 | goto all_done; | |
1585 | } | |
1586 | size_t needed = ((size_t) prec + EXTSIZ) * sizeof (CHAR_T); | |
1587 | ||
1588 | if (__libc_use_alloca (needed)) | |
1589 | workend = (CHAR_T *) alloca (needed) + prec + EXTSIZ; | |
1590 | else | |
1591 | { | |
1592 | workstart = (CHAR_T *) malloc (needed); | |
1593 | if (workstart == NULL) | |
1594 | { | |
1595 | done = -1; | |
1596 | goto all_done; | |
1597 | } | |
1598 | workend = workstart + prec + EXTSIZ; | |
1599 | } | |
1600 | } | |
1601 | JUMP (*f, step2_jumps); | |
1602 | ||
1603 | /* Process 'h' modifier. There might another 'h' following. */ | |
1604 | LABEL (mod_half): | |
1605 | is_short = 1; | |
1606 | JUMP (*++f, step3a_jumps); | |
1607 | ||
1608 | /* Process 'hh' modifier. */ | |
1609 | LABEL (mod_halfhalf): | |
1610 | is_short = 0; | |
1611 | is_char = 1; | |
1612 | JUMP (*++f, step4_jumps); | |
1613 | ||
1614 | /* Process 'l' modifier. There might another 'l' following. */ | |
1615 | LABEL (mod_long): | |
1616 | is_long = 1; | |
1617 | JUMP (*++f, step3b_jumps); | |
1618 | ||
1619 | /* Process 'L', 'q', or 'll' modifier. No other modifier is | |
1620 | allowed to follow. */ | |
1621 | LABEL (mod_longlong): | |
1622 | is_long_double = 1; | |
1623 | is_long = 1; | |
1624 | JUMP (*++f, step4_jumps); | |
1625 | ||
1626 | LABEL (mod_size_t): | |
1627 | is_long_double = sizeof (size_t) > sizeof (unsigned long int); | |
1628 | is_long = sizeof (size_t) > sizeof (unsigned int); | |
1629 | JUMP (*++f, step4_jumps); | |
1630 | ||
1631 | LABEL (mod_ptrdiff_t): | |
1632 | is_long_double = sizeof (ptrdiff_t) > sizeof (unsigned long int); | |
1633 | is_long = sizeof (ptrdiff_t) > sizeof (unsigned int); | |
1634 | JUMP (*++f, step4_jumps); | |
1635 | ||
1636 | LABEL (mod_intmax_t): | |
1637 | is_long_double = sizeof (intmax_t) > sizeof (unsigned long int); | |
1638 | is_long = sizeof (intmax_t) > sizeof (unsigned int); | |
1639 | JUMP (*++f, step4_jumps); | |
1640 | ||
1641 | /* Process current format. */ | |
1642 | while (1) | |
1643 | { | |
1644 | process_arg (((struct printf_spec *) NULL)); | |
1645 | process_string_arg (((struct printf_spec *) NULL)); | |
1646 | ||
1647 | LABEL (form_unknown): | |
1648 | if (spec == L_('\0')) | |
1649 | { | |
1650 | /* The format string ended before the specifier is complete. */ | |
1651 | __set_errno (EINVAL); | |
1652 | done = -1; | |
1653 | goto all_done; | |
1654 | } | |
1655 | ||
1656 | /* If we are in the fast loop force entering the complicated | |
1657 | one. */ | |
1658 | goto do_positional; | |
1659 | } | |
1660 | ||
1661 | /* The format is correctly handled. */ | |
1662 | ++nspecs_done; | |
1663 | ||
1664 | if (__glibc_unlikely (workstart != NULL)) | |
1665 | free (workstart); | |
1666 | workstart = NULL; | |
1667 | ||
1668 | /* Look for next format specifier. */ | |
1669 | #ifdef COMPILE_WPRINTF | |
1670 | f = __find_specwc ((end_of_spec = ++f)); | |
1671 | #else | |
1672 | f = __find_specmb ((end_of_spec = ++f)); | |
1673 | #endif | |
1674 | ||
1675 | /* Write the following constant string. */ | |
1676 | outstring (end_of_spec, f - end_of_spec); | |
1677 | } | |
1678 | while (*f != L_('\0')); | |
1679 | ||
1680 | /* Unlock stream and return. */ | |
1681 | goto all_done; | |
1682 | ||
1683 | /* Hand off processing for positional parameters. */ | |
1684 | do_positional: | |
1685 | if (__glibc_unlikely (workstart != NULL)) | |
1686 | { | |
1687 | free (workstart); | |
1688 | workstart = NULL; | |
1689 | } | |
1690 | done = printf_positional (s, format, readonly_format, ap, &ap_save, | |
1691 | done, nspecs_done, lead_str_end, work_buffer, | |
1692 | save_errno, grouping, thousands_sep, mode_flags); | |
1693 | ||
1694 | all_done: | |
1695 | if (__glibc_unlikely (workstart != NULL)) | |
1696 | free (workstart); | |
1697 | /* Unlock the stream. */ | |
1698 | _IO_funlockfile (s); | |
1699 | _IO_cleanup_region_end (0); | |
1700 | ||
1701 | return done; | |
1702 | } | |
1703 | \f | |
1704 | static int | |
1705 | printf_positional (FILE *s, const CHAR_T *format, int readonly_format, | |
1706 | va_list ap, va_list *ap_savep, int done, int nspecs_done, | |
1707 | const UCHAR_T *lead_str_end, | |
1708 | CHAR_T *work_buffer, int save_errno, | |
1709 | const char *grouping, THOUSANDS_SEP_T thousands_sep, | |
1710 | unsigned int mode_flags) | |
1711 | { | |
1712 | /* For positional argument handling. */ | |
1713 | struct scratch_buffer specsbuf; | |
1714 | scratch_buffer_init (&specsbuf); | |
1715 | struct printf_spec *specs = specsbuf.data; | |
1716 | size_t specs_limit = specsbuf.length / sizeof (specs[0]); | |
1717 | ||
1718 | /* Used as a backing store for args_value, args_size, args_type | |
1719 | below. */ | |
1720 | struct scratch_buffer argsbuf; | |
1721 | scratch_buffer_init (&argsbuf); | |
1722 | ||
1723 | /* Array with information about the needed arguments. This has to | |
1724 | be dynamically extensible. */ | |
1725 | size_t nspecs = 0; | |
1726 | ||
1727 | /* The number of arguments the format string requests. This will | |
1728 | determine the size of the array needed to store the argument | |
1729 | attributes. */ | |
1730 | size_t nargs = 0; | |
1731 | ||
1732 | /* Positional parameters refer to arguments directly. This could | |
1733 | also determine the maximum number of arguments. Track the | |
1734 | maximum number. */ | |
1735 | size_t max_ref_arg = 0; | |
1736 | ||
1737 | /* Just a counter. */ | |
1738 | size_t cnt; | |
1739 | ||
1740 | CHAR_T *workstart = NULL; | |
1741 | ||
1742 | if (grouping == (const char *) -1) | |
1743 | { | |
1744 | #ifdef COMPILE_WPRINTF | |
1745 | thousands_sep = _NL_CURRENT_WORD (LC_NUMERIC, | |
1746 | _NL_NUMERIC_THOUSANDS_SEP_WC); | |
1747 | #else | |
1748 | thousands_sep = _NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP); | |
1749 | #endif | |
1750 | ||
1751 | grouping = _NL_CURRENT (LC_NUMERIC, GROUPING); | |
1752 | if (*grouping == '\0' || *grouping == CHAR_MAX) | |
1753 | grouping = NULL; | |
1754 | } | |
1755 | ||
1756 | for (const UCHAR_T *f = lead_str_end; *f != L_('\0'); | |
1757 | f = specs[nspecs++].next_fmt) | |
1758 | { | |
1759 | if (nspecs == specs_limit) | |
1760 | { | |
1761 | if (!scratch_buffer_grow_preserve (&specsbuf)) | |
1762 | { | |
1763 | done = -1; | |
1764 | goto all_done; | |
1765 | } | |
1766 | specs = specsbuf.data; | |
1767 | specs_limit = specsbuf.length / sizeof (specs[0]); | |
1768 | } | |
1769 | ||
1770 | /* Parse the format specifier. */ | |
1771 | #ifdef COMPILE_WPRINTF | |
1772 | nargs += __parse_one_specwc (f, nargs, &specs[nspecs], &max_ref_arg); | |
1773 | #else | |
1774 | nargs += __parse_one_specmb (f, nargs, &specs[nspecs], &max_ref_arg); | |
1775 | #endif | |
1776 | } | |
1777 | ||
1778 | /* Determine the number of arguments the format string consumes. */ | |
1779 | nargs = MAX (nargs, max_ref_arg); | |
1780 | ||
1781 | union printf_arg *args_value; | |
1782 | int *args_size; | |
1783 | int *args_type; | |
1784 | { | |
1785 | /* Calculate total size needed to represent a single argument | |
1786 | across all three argument-related arrays. */ | |
1787 | size_t bytes_per_arg | |
1788 | = sizeof (*args_value) + sizeof (*args_size) + sizeof (*args_type); | |
1789 | if (!scratch_buffer_set_array_size (&argsbuf, nargs, bytes_per_arg)) | |
1790 | { | |
1791 | done = -1; | |
1792 | goto all_done; | |
1793 | } | |
1794 | args_value = argsbuf.data; | |
1795 | /* Set up the remaining two arrays to each point past the end of | |
1796 | the prior array, since space for all three has been allocated | |
1797 | now. */ | |
1798 | args_size = &args_value[nargs].pa_int; | |
1799 | args_type = &args_size[nargs]; | |
1800 | memset (args_type, (mode_flags & PRINTF_FORTIFY) != 0 ? '\xff' : '\0', | |
1801 | nargs * sizeof (*args_type)); | |
1802 | } | |
1803 | ||
1804 | /* XXX Could do sanity check here: If any element in ARGS_TYPE is | |
1805 | still zero after this loop, format is invalid. For now we | |
1806 | simply use 0 as the value. */ | |
1807 | ||
1808 | /* Fill in the types of all the arguments. */ | |
1809 | for (cnt = 0; cnt < nspecs; ++cnt) | |
1810 | { | |
1811 | /* If the width is determined by an argument this is an int. */ | |
1812 | if (specs[cnt].width_arg != -1) | |
1813 | args_type[specs[cnt].width_arg] = PA_INT; | |
1814 | ||
1815 | /* If the precision is determined by an argument this is an int. */ | |
1816 | if (specs[cnt].prec_arg != -1) | |
1817 | args_type[specs[cnt].prec_arg] = PA_INT; | |
1818 | ||
1819 | switch (specs[cnt].ndata_args) | |
1820 | { | |
1821 | case 0: /* No arguments. */ | |
1822 | break; | |
1823 | case 1: /* One argument; we already have the | |
1824 | type and size. */ | |
1825 | args_type[specs[cnt].data_arg] = specs[cnt].data_arg_type; | |
1826 | args_size[specs[cnt].data_arg] = specs[cnt].size; | |
1827 | break; | |
1828 | default: | |
1829 | /* We have more than one argument for this format spec. | |
1830 | We must call the arginfo function again to determine | |
1831 | all the types. */ | |
1832 | (void) (*__printf_arginfo_table[specs[cnt].info.spec]) | |
1833 | (&specs[cnt].info, | |
1834 | specs[cnt].ndata_args, &args_type[specs[cnt].data_arg], | |
1835 | &args_size[specs[cnt].data_arg]); | |
1836 | break; | |
1837 | } | |
1838 | } | |
1839 | ||
1840 | /* Now we know all the types and the order. Fill in the argument | |
1841 | values. */ | |
1842 | for (cnt = 0; cnt < nargs; ++cnt) | |
1843 | switch (args_type[cnt]) | |
1844 | { | |
1845 | #define T(tag, mem, type) \ | |
1846 | case tag: \ | |
1847 | args_value[cnt].mem = va_arg (*ap_savep, type); \ | |
1848 | break | |
1849 | ||
1850 | T (PA_WCHAR, pa_wchar, wint_t); | |
1851 | case PA_CHAR: /* Promoted. */ | |
1852 | case PA_INT|PA_FLAG_SHORT: /* Promoted. */ | |
1853 | #if LONG_MAX == INT_MAX | |
1854 | case PA_INT|PA_FLAG_LONG: | |
1855 | #endif | |
1856 | T (PA_INT, pa_int, int); | |
1857 | #if LONG_MAX == LONG_LONG_MAX | |
1858 | case PA_INT|PA_FLAG_LONG: | |
1859 | #endif | |
1860 | T (PA_INT|PA_FLAG_LONG_LONG, pa_long_long_int, long long int); | |
1861 | #if LONG_MAX != INT_MAX && LONG_MAX != LONG_LONG_MAX | |
1862 | # error "he?" | |
1863 | #endif | |
1864 | case PA_FLOAT: /* Promoted. */ | |
1865 | T (PA_DOUBLE, pa_double, double); | |
1866 | case PA_DOUBLE|PA_FLAG_LONG_DOUBLE: | |
1867 | if (__glibc_unlikely ((mode_flags & PRINTF_LDBL_IS_DBL) != 0)) | |
1868 | { | |
1869 | args_value[cnt].pa_double = va_arg (*ap_savep, double); | |
1870 | args_type[cnt] &= ~PA_FLAG_LONG_DOUBLE; | |
1871 | } | |
1872 | else | |
1873 | args_value[cnt].pa_long_double = va_arg (*ap_savep, long double); | |
1874 | break; | |
1875 | case PA_STRING: /* All pointers are the same */ | |
1876 | case PA_WSTRING: /* All pointers are the same */ | |
1877 | T (PA_POINTER, pa_pointer, void *); | |
1878 | #undef T | |
1879 | default: | |
1880 | if ((args_type[cnt] & PA_FLAG_PTR) != 0) | |
1881 | args_value[cnt].pa_pointer = va_arg (*ap_savep, void *); | |
1882 | else if (__glibc_unlikely (__printf_va_arg_table != NULL) | |
1883 | && __printf_va_arg_table[args_type[cnt] - PA_LAST] != NULL) | |
1884 | { | |
1885 | args_value[cnt].pa_user = alloca (args_size[cnt]); | |
1886 | (*__printf_va_arg_table[args_type[cnt] - PA_LAST]) | |
1887 | (args_value[cnt].pa_user, ap_savep); | |
1888 | } | |
1889 | else | |
1890 | args_value[cnt].pa_long_double = 0.0; | |
1891 | break; | |
1892 | case -1: | |
1893 | /* Error case. Not all parameters appear in N$ format | |
1894 | strings. We have no way to determine their type. */ | |
1895 | assert ((mode_flags & PRINTF_FORTIFY) != 0); | |
1896 | __libc_fatal ("*** invalid %N$ use detected ***\n"); | |
1897 | } | |
1898 | ||
1899 | /* Now walk through all format specifiers and process them. */ | |
1900 | for (; (size_t) nspecs_done < nspecs; ++nspecs_done) | |
1901 | { | |
1902 | STEP4_TABLE; | |
1903 | ||
1904 | int is_negative; | |
1905 | union | |
1906 | { | |
1907 | unsigned long long int longlong; | |
1908 | unsigned long int word; | |
1909 | } number; | |
1910 | int base; | |
1911 | union printf_arg the_arg; | |
1912 | CHAR_T *string; /* Pointer to argument string. */ | |
1913 | ||
1914 | /* Fill variables from values in struct. */ | |
1915 | int alt = specs[nspecs_done].info.alt; | |
1916 | int space = specs[nspecs_done].info.space; | |
1917 | int left = specs[nspecs_done].info.left; | |
1918 | int showsign = specs[nspecs_done].info.showsign; | |
1919 | int group = specs[nspecs_done].info.group; | |
1920 | int is_long_double = specs[nspecs_done].info.is_long_double; | |
1921 | int is_short = specs[nspecs_done].info.is_short; | |
1922 | int is_char = specs[nspecs_done].info.is_char; | |
1923 | int is_long = specs[nspecs_done].info.is_long; | |
1924 | int width = specs[nspecs_done].info.width; | |
1925 | int prec = specs[nspecs_done].info.prec; | |
1926 | int use_outdigits = specs[nspecs_done].info.i18n; | |
1927 | char pad = specs[nspecs_done].info.pad; | |
1928 | CHAR_T spec = specs[nspecs_done].info.spec; | |
1929 | ||
1930 | workstart = NULL; | |
1931 | CHAR_T *workend = work_buffer + WORK_BUFFER_SIZE; | |
1932 | ||
1933 | /* Fill in last information. */ | |
1934 | if (specs[nspecs_done].width_arg != -1) | |
1935 | { | |
1936 | /* Extract the field width from an argument. */ | |
1937 | specs[nspecs_done].info.width = | |
1938 | args_value[specs[nspecs_done].width_arg].pa_int; | |
1939 | ||
1940 | if (specs[nspecs_done].info.width < 0) | |
1941 | /* If the width value is negative left justification is | |
1942 | selected and the value is taken as being positive. */ | |
1943 | { | |
1944 | specs[nspecs_done].info.width *= -1; | |
1945 | left = specs[nspecs_done].info.left = 1; | |
1946 | } | |
1947 | width = specs[nspecs_done].info.width; | |
1948 | } | |
1949 | ||
1950 | if (specs[nspecs_done].prec_arg != -1) | |
1951 | { | |
1952 | /* Extract the precision from an argument. */ | |
1953 | specs[nspecs_done].info.prec = | |
1954 | args_value[specs[nspecs_done].prec_arg].pa_int; | |
1955 | ||
1956 | if (specs[nspecs_done].info.prec < 0) | |
1957 | /* If the precision is negative the precision is | |
1958 | omitted. */ | |
1959 | specs[nspecs_done].info.prec = -1; | |
1960 | ||
1961 | prec = specs[nspecs_done].info.prec; | |
1962 | } | |
1963 | ||
1964 | /* Maybe the buffer is too small. */ | |
1965 | if (MAX (prec, width) + EXTSIZ > WORK_BUFFER_SIZE) | |
1966 | { | |
1967 | if (__libc_use_alloca ((MAX (prec, width) + EXTSIZ) | |
1968 | * sizeof (CHAR_T))) | |
1969 | workend = ((CHAR_T *) alloca ((MAX (prec, width) + EXTSIZ) | |
1970 | * sizeof (CHAR_T)) | |
1971 | + (MAX (prec, width) + EXTSIZ)); | |
1972 | else | |
1973 | { | |
1974 | workstart = (CHAR_T *) malloc ((MAX (prec, width) + EXTSIZ) | |
1975 | * sizeof (CHAR_T)); | |
1976 | if (workstart == NULL) | |
1977 | { | |
1978 | done = -1; | |
1979 | goto all_done; | |
1980 | } | |
1981 | workend = workstart + (MAX (prec, width) + EXTSIZ); | |
1982 | } | |
1983 | } | |
1984 | ||
1985 | /* Process format specifiers. */ | |
1986 | while (1) | |
1987 | { | |
1988 | extern printf_function **__printf_function_table; | |
1989 | int function_done; | |
1990 | ||
1991 | if (spec <= UCHAR_MAX | |
1992 | && __printf_function_table != NULL | |
1993 | && __printf_function_table[(size_t) spec] != NULL) | |
1994 | { | |
1995 | const void **ptr = alloca (specs[nspecs_done].ndata_args | |
1996 | * sizeof (const void *)); | |
1997 | ||
1998 | /* Fill in an array of pointers to the argument values. */ | |
1999 | for (unsigned int i = 0; i < specs[nspecs_done].ndata_args; | |
2000 | ++i) | |
2001 | ptr[i] = &args_value[specs[nspecs_done].data_arg + i]; | |
2002 | ||
2003 | /* Call the function. */ | |
2004 | function_done = __printf_function_table[(size_t) spec] | |
2005 | (s, &specs[nspecs_done].info, ptr); | |
2006 | ||
2007 | if (function_done != -2) | |
2008 | { | |
2009 | /* If an error occurred we don't have information | |
2010 | about # of chars. */ | |
2011 | if (function_done < 0) | |
2012 | { | |
2013 | /* Function has set errno. */ | |
2014 | done = -1; | |
2015 | goto all_done; | |
2016 | } | |
2017 | ||
2018 | done_add (function_done); | |
2019 | break; | |
2020 | } | |
2021 | } | |
2022 | ||
2023 | JUMP (spec, step4_jumps); | |
2024 | ||
2025 | process_arg ((&specs[nspecs_done])); | |
2026 | process_string_arg ((&specs[nspecs_done])); | |
2027 | ||
2028 | LABEL (form_unknown): | |
2029 | { | |
2030 | unsigned int i; | |
2031 | const void **ptr; | |
2032 | ||
2033 | ptr = alloca (specs[nspecs_done].ndata_args | |
2034 | * sizeof (const void *)); | |
2035 | ||
2036 | /* Fill in an array of pointers to the argument values. */ | |
2037 | for (i = 0; i < specs[nspecs_done].ndata_args; ++i) | |
2038 | ptr[i] = &args_value[specs[nspecs_done].data_arg + i]; | |
2039 | ||
2040 | /* Call the function. */ | |
2041 | function_done = printf_unknown (s, &specs[nspecs_done].info, | |
2042 | ptr); | |
2043 | ||
2044 | /* If an error occurred we don't have information about # | |
2045 | of chars. */ | |
2046 | if (function_done < 0) | |
2047 | { | |
2048 | /* Function has set errno. */ | |
2049 | done = -1; | |
2050 | goto all_done; | |
2051 | } | |
2052 | ||
2053 | done_add (function_done); | |
2054 | } | |
2055 | break; | |
2056 | } | |
2057 | ||
2058 | if (__glibc_unlikely (workstart != NULL)) | |
2059 | free (workstart); | |
2060 | workstart = NULL; | |
2061 | ||
2062 | /* Write the following constant string. */ | |
2063 | outstring (specs[nspecs_done].end_of_fmt, | |
2064 | specs[nspecs_done].next_fmt | |
2065 | - specs[nspecs_done].end_of_fmt); | |
2066 | } | |
2067 | all_done: | |
2068 | if (__glibc_unlikely (workstart != NULL)) | |
2069 | free (workstart); | |
2070 | scratch_buffer_free (&argsbuf); | |
2071 | scratch_buffer_free (&specsbuf); | |
2072 | return done; | |
2073 | } | |
2074 | \f | |
2075 | /* Handle an unknown format specifier. This prints out a canonicalized | |
2076 | representation of the format spec itself. */ | |
2077 | static int | |
2078 | printf_unknown (FILE *s, const struct printf_info *info, | |
2079 | const void *const *args) | |
2080 | ||
2081 | { | |
2082 | int done = 0; | |
2083 | CHAR_T work_buffer[MAX (sizeof (info->width), sizeof (info->prec)) * 3]; | |
2084 | CHAR_T *const workend | |
2085 | = &work_buffer[sizeof (work_buffer) / sizeof (CHAR_T)]; | |
2086 | CHAR_T *w; | |
2087 | ||
2088 | outchar (L_('%')); | |
2089 | ||
2090 | if (info->alt) | |
2091 | outchar (L_('#')); | |
2092 | if (info->group) | |
2093 | outchar (L_('\'')); | |
2094 | if (info->showsign) | |
2095 | outchar (L_('+')); | |
2096 | else if (info->space) | |
2097 | outchar (L_(' ')); | |
2098 | if (info->left) | |
2099 | outchar (L_('-')); | |
2100 | if (info->pad == L_('0')) | |
2101 | outchar (L_('0')); | |
2102 | if (info->i18n) | |
2103 | outchar (L_('I')); | |
2104 | ||
2105 | if (info->width != 0) | |
2106 | { | |
2107 | w = _itoa_word (info->width, workend, 10, 0); | |
2108 | while (w < workend) | |
2109 | outchar (*w++); | |
2110 | } | |
2111 | ||
2112 | if (info->prec != -1) | |
2113 | { | |
2114 | outchar (L_('.')); | |
2115 | w = _itoa_word (info->prec, workend, 10, 0); | |
2116 | while (w < workend) | |
2117 | outchar (*w++); | |
2118 | } | |
2119 | ||
2120 | if (info->spec != L_('\0')) | |
2121 | outchar (info->spec); | |
2122 | ||
2123 | all_done: | |
2124 | return done; | |
2125 | } | |
2126 | \f | |
2127 | /* Group the digits from W to REAR_PTR according to the grouping rules | |
2128 | of the current locale. The interpretation of GROUPING is as in | |
2129 | `struct lconv' from <locale.h>. The grouped number extends from | |
2130 | the returned pointer until REAR_PTR. FRONT_PTR to W is used as a | |
2131 | scratch area. */ | |
2132 | static CHAR_T * | |
2133 | group_number (CHAR_T *front_ptr, CHAR_T *w, CHAR_T *rear_ptr, | |
2134 | const char *grouping, THOUSANDS_SEP_T thousands_sep) | |
2135 | { | |
2136 | /* Length of the current group. */ | |
2137 | int len; | |
2138 | #ifndef COMPILE_WPRINTF | |
2139 | /* Length of the separator (in wide mode, the separator is always a | |
2140 | single wide character). */ | |
2141 | int tlen = strlen (thousands_sep); | |
2142 | #endif | |
2143 | ||
2144 | /* We treat all negative values like CHAR_MAX. */ | |
2145 | ||
2146 | if (*grouping == CHAR_MAX || *grouping <= 0) | |
2147 | /* No grouping should be done. */ | |
2148 | return w; | |
2149 | ||
2150 | len = *grouping++; | |
2151 | ||
2152 | /* Copy existing string so that nothing gets overwritten. */ | |
2153 | memmove (front_ptr, w, (rear_ptr - w) * sizeof (CHAR_T)); | |
2154 | CHAR_T *s = front_ptr + (rear_ptr - w); | |
2155 | ||
2156 | w = rear_ptr; | |
2157 | ||
2158 | /* Process all characters in the string. */ | |
2159 | while (s > front_ptr) | |
2160 | { | |
2161 | *--w = *--s; | |
2162 | ||
2163 | if (--len == 0 && s > front_ptr) | |
2164 | { | |
2165 | /* A new group begins. */ | |
2166 | #ifdef COMPILE_WPRINTF | |
2167 | if (w != s) | |
2168 | *--w = thousands_sep; | |
2169 | else | |
2170 | /* Not enough room for the separator. */ | |
2171 | goto copy_rest; | |
2172 | #else | |
2173 | int cnt = tlen; | |
2174 | if (tlen < w - s) | |
2175 | do | |
2176 | *--w = thousands_sep[--cnt]; | |
2177 | while (cnt > 0); | |
2178 | else | |
2179 | /* Not enough room for the separator. */ | |
2180 | goto copy_rest; | |
2181 | #endif | |
2182 | ||
2183 | if (*grouping == CHAR_MAX | |
2184 | #if CHAR_MIN < 0 | |
2185 | || *grouping < 0 | |
2186 | #endif | |
2187 | ) | |
2188 | { | |
2189 | copy_rest: | |
2190 | /* No further grouping to be done. Copy the rest of the | |
2191 | number. */ | |
2192 | memmove (w, s, (front_ptr -s) * sizeof (CHAR_T)); | |
2193 | break; | |
2194 | } | |
2195 | else if (*grouping != '\0') | |
2196 | len = *grouping++; | |
2197 | else | |
2198 | /* The previous grouping repeats ad infinitum. */ | |
2199 | len = grouping[-1]; | |
2200 | } | |
2201 | } | |
2202 | return w; | |
2203 | } | |
2204 | \f | |
2205 | /* Helper "class" for `fprintf to unbuffered': creates a temporary buffer. */ | |
2206 | struct helper_file | |
2207 | { | |
2208 | struct _IO_FILE_plus _f; | |
2209 | #ifdef COMPILE_WPRINTF | |
2210 | struct _IO_wide_data _wide_data; | |
2211 | #endif | |
2212 | FILE *_put_stream; | |
2213 | #ifdef _IO_MTSAFE_IO | |
2214 | _IO_lock_t lock; | |
2215 | #endif | |
2216 | }; | |
2217 | ||
2218 | static int | |
2219 | _IO_helper_overflow (FILE *s, int c) | |
2220 | { | |
2221 | FILE *target = ((struct helper_file*) s)->_put_stream; | |
2222 | #ifdef COMPILE_WPRINTF | |
2223 | int used = s->_wide_data->_IO_write_ptr - s->_wide_data->_IO_write_base; | |
2224 | if (used) | |
2225 | { | |
2226 | size_t written = _IO_sputn (target, s->_wide_data->_IO_write_base, used); | |
2227 | if (written == 0 || written == WEOF) | |
2228 | return WEOF; | |
2229 | __wmemmove (s->_wide_data->_IO_write_base, | |
2230 | s->_wide_data->_IO_write_base + written, | |
2231 | used - written); | |
2232 | s->_wide_data->_IO_write_ptr -= written; | |
2233 | } | |
2234 | #else | |
2235 | int used = s->_IO_write_ptr - s->_IO_write_base; | |
2236 | if (used) | |
2237 | { | |
2238 | size_t written = _IO_sputn (target, s->_IO_write_base, used); | |
2239 | if (written == 0 || written == EOF) | |
2240 | return EOF; | |
2241 | memmove (s->_IO_write_base, s->_IO_write_base + written, | |
2242 | used - written); | |
2243 | s->_IO_write_ptr -= written; | |
2244 | } | |
2245 | #endif | |
2246 | return PUTC (c, s); | |
2247 | } | |
2248 | ||
2249 | #ifdef COMPILE_WPRINTF | |
2250 | static const struct _IO_jump_t _IO_helper_jumps libio_vtable = | |
2251 | { | |
2252 | JUMP_INIT_DUMMY, | |
2253 | JUMP_INIT (finish, _IO_wdefault_finish), | |
2254 | JUMP_INIT (overflow, _IO_helper_overflow), | |
2255 | JUMP_INIT (underflow, _IO_default_underflow), | |
2256 | JUMP_INIT (uflow, _IO_default_uflow), | |
2257 | JUMP_INIT (pbackfail, (_IO_pbackfail_t) _IO_wdefault_pbackfail), | |
2258 | JUMP_INIT (xsputn, _IO_wdefault_xsputn), | |
2259 | JUMP_INIT (xsgetn, _IO_wdefault_xsgetn), | |
2260 | JUMP_INIT (seekoff, _IO_default_seekoff), | |
2261 | JUMP_INIT (seekpos, _IO_default_seekpos), | |
2262 | JUMP_INIT (setbuf, _IO_default_setbuf), | |
2263 | JUMP_INIT (sync, _IO_default_sync), | |
2264 | JUMP_INIT (doallocate, _IO_wdefault_doallocate), | |
2265 | JUMP_INIT (read, _IO_default_read), | |
2266 | JUMP_INIT (write, _IO_default_write), | |
2267 | JUMP_INIT (seek, _IO_default_seek), | |
2268 | JUMP_INIT (close, _IO_default_close), | |
2269 | JUMP_INIT (stat, _IO_default_stat) | |
2270 | }; | |
2271 | #else | |
2272 | static const struct _IO_jump_t _IO_helper_jumps libio_vtable = | |
2273 | { | |
2274 | JUMP_INIT_DUMMY, | |
2275 | JUMP_INIT (finish, _IO_default_finish), | |
2276 | JUMP_INIT (overflow, _IO_helper_overflow), | |
2277 | JUMP_INIT (underflow, _IO_default_underflow), | |
2278 | JUMP_INIT (uflow, _IO_default_uflow), | |
2279 | JUMP_INIT (pbackfail, _IO_default_pbackfail), | |
2280 | JUMP_INIT (xsputn, _IO_default_xsputn), | |
2281 | JUMP_INIT (xsgetn, _IO_default_xsgetn), | |
2282 | JUMP_INIT (seekoff, _IO_default_seekoff), | |
2283 | JUMP_INIT (seekpos, _IO_default_seekpos), | |
2284 | JUMP_INIT (setbuf, _IO_default_setbuf), | |
2285 | JUMP_INIT (sync, _IO_default_sync), | |
2286 | JUMP_INIT (doallocate, _IO_default_doallocate), | |
2287 | JUMP_INIT (read, _IO_default_read), | |
2288 | JUMP_INIT (write, _IO_default_write), | |
2289 | JUMP_INIT (seek, _IO_default_seek), | |
2290 | JUMP_INIT (close, _IO_default_close), | |
2291 | JUMP_INIT (stat, _IO_default_stat) | |
2292 | }; | |
2293 | #endif | |
2294 | ||
2295 | static int | |
2296 | buffered_vfprintf (FILE *s, const CHAR_T *format, va_list args, | |
2297 | unsigned int mode_flags) | |
2298 | { | |
2299 | CHAR_T buf[BUFSIZ]; | |
2300 | struct helper_file helper; | |
2301 | FILE *hp = (FILE *) &helper._f; | |
2302 | int result, to_flush; | |
2303 | ||
2304 | /* Orient the stream. */ | |
2305 | #ifdef ORIENT | |
2306 | ORIENT; | |
2307 | #endif | |
2308 | ||
2309 | /* Initialize helper. */ | |
2310 | helper._put_stream = s; | |
2311 | #ifdef COMPILE_WPRINTF | |
2312 | hp->_wide_data = &helper._wide_data; | |
2313 | _IO_wsetp (hp, buf, buf + sizeof buf / sizeof (CHAR_T)); | |
2314 | hp->_mode = 1; | |
2315 | #else | |
2316 | _IO_setp (hp, buf, buf + sizeof buf); | |
2317 | hp->_mode = -1; | |
2318 | #endif | |
2319 | hp->_flags = _IO_MAGIC|_IO_NO_READS|_IO_USER_LOCK; | |
2320 | #if _IO_JUMPS_OFFSET | |
2321 | hp->_vtable_offset = 0; | |
2322 | #endif | |
2323 | #ifdef _IO_MTSAFE_IO | |
2324 | hp->_lock = NULL; | |
2325 | #endif | |
2326 | hp->_flags2 = s->_flags2; | |
2327 | _IO_JUMPS (&helper._f) = (struct _IO_jump_t *) &_IO_helper_jumps; | |
2328 | ||
2329 | /* Now print to helper instead. */ | |
2330 | result = vfprintf (hp, format, args, mode_flags); | |
2331 | ||
2332 | /* Lock stream. */ | |
2333 | __libc_cleanup_region_start (1, (void (*) (void *)) &_IO_funlockfile, s); | |
2334 | _IO_flockfile (s); | |
2335 | ||
2336 | /* Now flush anything from the helper to the S. */ | |
2337 | #ifdef COMPILE_WPRINTF | |
2338 | if ((to_flush = (hp->_wide_data->_IO_write_ptr | |
2339 | - hp->_wide_data->_IO_write_base)) > 0) | |
2340 | { | |
2341 | if ((int) _IO_sputn (s, hp->_wide_data->_IO_write_base, to_flush) | |
2342 | != to_flush) | |
2343 | result = -1; | |
2344 | } | |
2345 | #else | |
2346 | if ((to_flush = hp->_IO_write_ptr - hp->_IO_write_base) > 0) | |
2347 | { | |
2348 | if ((int) _IO_sputn (s, hp->_IO_write_base, to_flush) != to_flush) | |
2349 | result = -1; | |
2350 | } | |
2351 | #endif | |
2352 | ||
2353 | /* Unlock the stream. */ | |
2354 | _IO_funlockfile (s); | |
2355 | __libc_cleanup_region_end (0); | |
2356 | ||
2357 | return result; | |
2358 | } |