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d4697bc9 | 1 | /* Copyright (C) 1993-2014 Free Software Foundation, Inc. |
41bdb6e2 | 2 | This file is part of the GNU C Library. |
d64b6ad0 UD |
3 | Written by Ulrich Drepper <drepper@cygnus.com>. |
4 | Based on the single byte version by Per Bothner <bothner@cygnus.com>. | |
5 | ||
41bdb6e2 AJ |
6 | The GNU C Library is free software; you can redistribute it and/or |
7 | modify it under the terms of the GNU Lesser General Public | |
8 | License as published by the Free Software Foundation; either | |
9 | version 2.1 of the License, or (at your option) any later version. | |
d64b6ad0 | 10 | |
41bdb6e2 AJ |
11 | The GNU C Library is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
d64b6ad0 | 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
41bdb6e2 | 14 | Lesser General Public License for more details. |
d64b6ad0 | 15 | |
41bdb6e2 | 16 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 PE |
17 | License along with the GNU C Library; if not, see |
18 | <http://www.gnu.org/licenses/>. | |
d64b6ad0 | 19 | |
41bdb6e2 AJ |
20 | As a special exception, if you link the code in this file with |
21 | files compiled with a GNU compiler to produce an executable, | |
22 | that does not cause the resulting executable to be covered by | |
23 | the GNU Lesser General Public License. This exception does not | |
24 | however invalidate any other reasons why the executable file | |
25 | might be covered by the GNU Lesser General Public License. | |
26 | This exception applies to code released by its copyright holders | |
27 | in files containing the exception. */ | |
d64b6ad0 UD |
28 | |
29 | #include <assert.h> | |
30 | #include <libioP.h> | |
31 | #include <wchar.h> | |
32 | #include <gconv.h> | |
33 | #include <stdlib.h> | |
34 | #include <string.h> | |
35 | ||
36 | ||
319d719d UD |
37 | #ifndef _LIBC |
38 | # define _IO_new_do_write _IO_do_write | |
39 | # define _IO_new_file_attach _IO_file_attach | |
40 | # define _IO_new_file_close_it _IO_file_close_it | |
41 | # define _IO_new_file_finish _IO_file_finish | |
42 | # define _IO_new_file_fopen _IO_file_fopen | |
43 | # define _IO_new_file_init _IO_file_init | |
44 | # define _IO_new_file_setbuf _IO_file_setbuf | |
45 | # define _IO_new_file_sync _IO_file_sync | |
46 | # define _IO_new_file_overflow _IO_file_overflow | |
47 | # define _IO_new_file_seekoff _IO_file_seekoff | |
48 | # define _IO_new_file_underflow _IO_file_underflow | |
49 | # define _IO_new_file_write _IO_file_write | |
50 | # define _IO_new_file_xsputn _IO_file_xsputn | |
51 | #endif | |
52 | ||
53 | ||
d64b6ad0 UD |
54 | /* Convert TO_DO wide character from DATA to FP. |
55 | Then mark FP as having empty buffers. */ | |
56 | int | |
57 | _IO_wdo_write (fp, data, to_do) | |
58 | _IO_FILE *fp; | |
59 | const wchar_t *data; | |
60 | _IO_size_t to_do; | |
61 | { | |
cd8b7ff9 | 62 | struct _IO_codecvt *cc = fp->_codecvt; |
d64b6ad0 | 63 | |
9494452c | 64 | if (to_do > 0) |
d64b6ad0 | 65 | { |
9c38a689 UD |
66 | if (fp->_IO_write_end == fp->_IO_write_ptr |
67 | && fp->_IO_write_end != fp->_IO_write_base) | |
d64b6ad0 | 68 | { |
9494452c UD |
69 | if (_IO_new_do_write (fp, fp->_IO_write_base, |
70 | fp->_IO_write_ptr - fp->_IO_write_base) == EOF) | |
f3495a08 | 71 | return WEOF; |
d64b6ad0 UD |
72 | } |
73 | ||
9494452c UD |
74 | do |
75 | { | |
76 | enum __codecvt_result result; | |
77 | const wchar_t *new_data; | |
78 | ||
79 | /* Now convert from the internal format into the external buffer. */ | |
80 | result = (*cc->__codecvt_do_out) (cc, &fp->_wide_data->_IO_state, | |
81 | data, data + to_do, &new_data, | |
82 | fp->_IO_write_ptr, | |
83 | fp->_IO_buf_end, | |
84 | &fp->_IO_write_ptr); | |
85 | ||
86 | /* Write out what we produced so far. */ | |
87 | if (_IO_new_do_write (fp, fp->_IO_write_base, | |
88 | fp->_IO_write_ptr - fp->_IO_write_base) == EOF) | |
89 | /* Something went wrong. */ | |
2fdeb7ca | 90 | return WEOF; |
9494452c | 91 | |
9494452c UD |
92 | to_do -= new_data - data; |
93 | ||
94 | /* Next see whether we had problems during the conversion. If yes, | |
95 | we cannot go on. */ | |
96 | if (result != __codecvt_ok | |
97 | && (result != __codecvt_partial || new_data - data == 0)) | |
98 | break; | |
99 | ||
100 | data = new_data; | |
101 | } | |
102 | while (to_do > 0); | |
d64b6ad0 UD |
103 | } |
104 | ||
105 | _IO_wsetg (fp, fp->_wide_data->_IO_buf_base, fp->_wide_data->_IO_buf_base, | |
106 | fp->_wide_data->_IO_buf_base); | |
107 | fp->_wide_data->_IO_write_base = fp->_wide_data->_IO_write_ptr | |
108 | = fp->_wide_data->_IO_buf_base; | |
109 | fp->_wide_data->_IO_write_end = ((fp->_flags & (_IO_LINE_BUF+_IO_UNBUFFERED)) | |
110 | ? fp->_wide_data->_IO_buf_base | |
111 | : fp->_wide_data->_IO_buf_end); | |
112 | ||
11fd973a | 113 | return to_do == 0 ? 0 : WEOF; |
d64b6ad0 | 114 | } |
d18ea0c5 | 115 | libc_hidden_def (_IO_wdo_write) |
d64b6ad0 UD |
116 | |
117 | ||
118 | wint_t | |
119 | _IO_wfile_underflow (fp) | |
120 | _IO_FILE *fp; | |
121 | { | |
122 | struct _IO_codecvt *cd; | |
123 | enum __codecvt_result status; | |
124 | _IO_ssize_t count; | |
d64b6ad0 | 125 | |
a1ffb40e | 126 | if (__glibc_unlikely (fp->_flags & _IO_NO_READS)) |
d64b6ad0 | 127 | { |
58034572 | 128 | fp->_flags |= _IO_ERR_SEEN; |
d64b6ad0 UD |
129 | __set_errno (EBADF); |
130 | return WEOF; | |
131 | } | |
132 | if (fp->_wide_data->_IO_read_ptr < fp->_wide_data->_IO_read_end) | |
133 | return *fp->_wide_data->_IO_read_ptr; | |
134 | ||
cd8b7ff9 | 135 | cd = fp->_codecvt; |
d64b6ad0 UD |
136 | |
137 | /* Maybe there is something left in the external buffer. */ | |
138 | if (fp->_IO_read_ptr < fp->_IO_read_end) | |
139 | { | |
5e473a71 UD |
140 | /* There is more in the external. Convert it. */ |
141 | const char *read_stop = (const char *) fp->_IO_read_ptr; | |
d64b6ad0 | 142 | |
5e473a71 | 143 | fp->_wide_data->_IO_last_state = fp->_wide_data->_IO_state; |
0469311e UD |
144 | fp->_wide_data->_IO_read_base = fp->_wide_data->_IO_read_ptr = |
145 | fp->_wide_data->_IO_buf_base; | |
5e473a71 UD |
146 | status = (*cd->__codecvt_do_in) (cd, &fp->_wide_data->_IO_state, |
147 | fp->_IO_read_ptr, fp->_IO_read_end, | |
148 | &read_stop, | |
0469311e | 149 | fp->_wide_data->_IO_read_ptr, |
5e473a71 UD |
150 | fp->_wide_data->_IO_buf_end, |
151 | &fp->_wide_data->_IO_read_end); | |
152 | ||
eb35b097 | 153 | fp->_IO_read_base = fp->_IO_read_ptr; |
5e473a71 UD |
154 | fp->_IO_read_ptr = (char *) read_stop; |
155 | ||
156 | /* If we managed to generate some text return the next character. */ | |
157 | if (fp->_wide_data->_IO_read_ptr < fp->_wide_data->_IO_read_end) | |
158 | return *fp->_wide_data->_IO_read_ptr; | |
159 | ||
160 | if (status == __codecvt_error) | |
d64b6ad0 | 161 | { |
5e473a71 UD |
162 | __set_errno (EILSEQ); |
163 | fp->_flags |= _IO_ERR_SEEN; | |
164 | return WEOF; | |
d64b6ad0 UD |
165 | } |
166 | ||
167 | /* Move the remaining content of the read buffer to the beginning. */ | |
168 | memmove (fp->_IO_buf_base, fp->_IO_read_ptr, | |
169 | fp->_IO_read_end - fp->_IO_read_ptr); | |
170 | fp->_IO_read_end = (fp->_IO_buf_base | |
171 | + (fp->_IO_read_end - fp->_IO_read_ptr)); | |
172 | fp->_IO_read_base = fp->_IO_read_ptr = fp->_IO_buf_base; | |
173 | } | |
174 | else | |
175 | fp->_IO_read_base = fp->_IO_read_ptr = fp->_IO_read_end = | |
176 | fp->_IO_buf_base; | |
177 | ||
d64b6ad0 UD |
178 | if (fp->_IO_buf_base == NULL) |
179 | { | |
180 | /* Maybe we already have a push back pointer. */ | |
181 | if (fp->_IO_save_base != NULL) | |
182 | { | |
183 | free (fp->_IO_save_base); | |
184 | fp->_flags &= ~_IO_IN_BACKUP; | |
185 | } | |
d18ea0c5 | 186 | _IO_doallocbuf (fp); |
a756bab8 UD |
187 | |
188 | fp->_IO_read_base = fp->_IO_read_ptr = fp->_IO_read_end = | |
189 | fp->_IO_buf_base; | |
d64b6ad0 UD |
190 | } |
191 | ||
a756bab8 UD |
192 | fp->_IO_write_base = fp->_IO_write_ptr = fp->_IO_write_end = |
193 | fp->_IO_buf_base; | |
194 | ||
d64b6ad0 UD |
195 | if (fp->_wide_data->_IO_buf_base == NULL) |
196 | { | |
197 | /* Maybe we already have a push back pointer. */ | |
198 | if (fp->_wide_data->_IO_save_base != NULL) | |
199 | { | |
200 | free (fp->_wide_data->_IO_save_base); | |
201 | fp->_flags &= ~_IO_IN_BACKUP; | |
202 | } | |
d18ea0c5 | 203 | _IO_wdoallocbuf (fp); |
d64b6ad0 UD |
204 | } |
205 | ||
206 | /* Flush all line buffered files before reading. */ | |
207 | /* FIXME This can/should be moved to genops ?? */ | |
208 | if (fp->_flags & (_IO_LINE_BUF|_IO_UNBUFFERED)) | |
3d759cb8 UD |
209 | { |
210 | #if 0 | |
d18ea0c5 | 211 | _IO_flush_all_linebuffered (); |
3d759cb8 UD |
212 | #else |
213 | /* We used to flush all line-buffered stream. This really isn't | |
214 | required by any standard. My recollection is that | |
215 | traditional Unix systems did this for stdout. stderr better | |
216 | not be line buffered. So we do just that here | |
217 | explicitly. --drepper */ | |
0261d33f | 218 | _IO_acquire_lock (_IO_stdout); |
3d759cb8 UD |
219 | |
220 | if ((_IO_stdout->_flags & (_IO_LINKED | _IO_NO_WRITES | _IO_LINE_BUF)) | |
221 | == (_IO_LINKED | _IO_LINE_BUF)) | |
222 | _IO_OVERFLOW (_IO_stdout, EOF); | |
223 | ||
0261d33f | 224 | _IO_release_lock (_IO_stdout); |
3d759cb8 UD |
225 | #endif |
226 | } | |
d64b6ad0 | 227 | |
d18ea0c5 | 228 | _IO_switch_to_get_mode (fp); |
d64b6ad0 | 229 | |
d64b6ad0 UD |
230 | fp->_wide_data->_IO_read_base = fp->_wide_data->_IO_read_ptr = |
231 | fp->_wide_data->_IO_buf_base; | |
232 | fp->_wide_data->_IO_read_end = fp->_wide_data->_IO_buf_base; | |
233 | fp->_wide_data->_IO_write_base = fp->_wide_data->_IO_write_ptr = | |
234 | fp->_wide_data->_IO_write_end = fp->_wide_data->_IO_buf_base; | |
235 | ||
82f2e9c6 UD |
236 | const char *read_ptr_copy; |
237 | char accbuf[MB_LEN_MAX]; | |
238 | size_t naccbuf = 0; | |
d64b6ad0 UD |
239 | again: |
240 | count = _IO_SYSREAD (fp, fp->_IO_read_end, | |
241 | fp->_IO_buf_end - fp->_IO_read_end); | |
242 | if (count <= 0) | |
243 | { | |
82f2e9c6 | 244 | if (count == 0 && naccbuf == 0) |
d64b6ad0 UD |
245 | fp->_flags |= _IO_EOF_SEEN; |
246 | else | |
247 | fp->_flags |= _IO_ERR_SEEN, count = 0; | |
248 | } | |
249 | fp->_IO_read_end += count; | |
250 | if (count == 0) | |
251 | { | |
82f2e9c6 | 252 | if (naccbuf != 0) |
d64b6ad0 | 253 | /* There are some bytes in the external buffer but they don't |
aaddc98c | 254 | convert to anything. */ |
d64b6ad0 UD |
255 | __set_errno (EILSEQ); |
256 | return WEOF; | |
257 | } | |
258 | if (fp->_offset != _IO_pos_BAD) | |
259 | _IO_pos_adjust (fp->_offset, count); | |
260 | ||
261 | /* Now convert the read input. */ | |
262 | fp->_wide_data->_IO_last_state = fp->_wide_data->_IO_state; | |
263 | fp->_IO_read_base = fp->_IO_read_ptr; | |
82f2e9c6 UD |
264 | const char *from = fp->_IO_read_ptr; |
265 | const char *to = fp->_IO_read_end; | |
266 | size_t to_copy = count; | |
a1ffb40e | 267 | if (__glibc_unlikely (naccbuf != 0)) |
82f2e9c6 UD |
268 | { |
269 | to_copy = MIN (sizeof (accbuf) - naccbuf, count); | |
270 | to = __mempcpy (&accbuf[naccbuf], from, to_copy); | |
271 | naccbuf += to_copy; | |
272 | from = accbuf; | |
273 | } | |
d64b6ad0 | 274 | status = (*cd->__codecvt_do_in) (cd, &fp->_wide_data->_IO_state, |
82f2e9c6 | 275 | from, to, &read_ptr_copy, |
d64b6ad0 UD |
276 | fp->_wide_data->_IO_read_end, |
277 | fp->_wide_data->_IO_buf_end, | |
278 | &fp->_wide_data->_IO_read_end); | |
279 | ||
a1ffb40e | 280 | if (__glibc_unlikely (naccbuf != 0)) |
82f2e9c6 UD |
281 | fp->_IO_read_ptr += MAX (0, read_ptr_copy - &accbuf[naccbuf - to_copy]); |
282 | else | |
283 | fp->_IO_read_ptr = (char *) read_ptr_copy; | |
d64b6ad0 UD |
284 | if (fp->_wide_data->_IO_read_end == fp->_wide_data->_IO_buf_base) |
285 | { | |
82f2e9c6 | 286 | if (status == __codecvt_error) |
d64b6ad0 | 287 | { |
82f2e9c6 | 288 | out_eilseq: |
d64b6ad0 UD |
289 | __set_errno (EILSEQ); |
290 | fp->_flags |= _IO_ERR_SEEN; | |
291 | return WEOF; | |
292 | } | |
293 | ||
294 | /* The read bytes make no complete character. Try reading again. */ | |
295 | assert (status == __codecvt_partial); | |
82f2e9c6 UD |
296 | |
297 | if (naccbuf == 0) | |
298 | { | |
a71433e7 UD |
299 | if (fp->_IO_read_base < fp->_IO_read_ptr) |
300 | { | |
301 | /* Partially used the buffer for some input data that | |
302 | produces no output. */ | |
303 | size_t avail = fp->_IO_read_end - fp->_IO_read_ptr; | |
304 | memmove (fp->_IO_read_base, fp->_IO_read_ptr, avail); | |
305 | fp->_IO_read_ptr = fp->_IO_read_base; | |
306 | fp->_IO_read_end -= avail; | |
307 | goto again; | |
308 | } | |
82f2e9c6 UD |
309 | naccbuf = fp->_IO_read_end - fp->_IO_read_ptr; |
310 | if (naccbuf >= sizeof (accbuf)) | |
311 | goto out_eilseq; | |
312 | ||
313 | memcpy (accbuf, fp->_IO_read_ptr, naccbuf); | |
314 | } | |
a71433e7 UD |
315 | else |
316 | { | |
317 | size_t used = read_ptr_copy - accbuf; | |
318 | if (used > 0) | |
319 | { | |
320 | memmove (accbuf, read_ptr_copy, naccbuf - used); | |
321 | naccbuf -= used; | |
322 | } | |
323 | ||
324 | if (naccbuf == sizeof (accbuf)) | |
325 | goto out_eilseq; | |
326 | } | |
82f2e9c6 UD |
327 | |
328 | fp->_IO_read_ptr = fp->_IO_read_end = fp->_IO_read_base; | |
329 | ||
d64b6ad0 UD |
330 | goto again; |
331 | } | |
332 | ||
333 | return *fp->_wide_data->_IO_read_ptr; | |
334 | } | |
d18ea0c5 | 335 | libc_hidden_def (_IO_wfile_underflow) |
d64b6ad0 UD |
336 | |
337 | ||
0469311e UD |
338 | static wint_t |
339 | _IO_wfile_underflow_mmap (_IO_FILE *fp) | |
340 | { | |
341 | struct _IO_codecvt *cd; | |
284749da | 342 | const char *read_stop; |
0469311e | 343 | |
a1ffb40e | 344 | if (__glibc_unlikely (fp->_flags & _IO_NO_READS)) |
0469311e UD |
345 | { |
346 | fp->_flags |= _IO_ERR_SEEN; | |
347 | __set_errno (EBADF); | |
348 | return WEOF; | |
349 | } | |
350 | if (fp->_wide_data->_IO_read_ptr < fp->_wide_data->_IO_read_end) | |
351 | return *fp->_wide_data->_IO_read_ptr; | |
352 | ||
353 | cd = fp->_codecvt; | |
354 | ||
355 | /* Maybe there is something left in the external buffer. */ | |
284749da UD |
356 | if (fp->_IO_read_ptr >= fp->_IO_read_end |
357 | /* No. But maybe the read buffer is not fully set up. */ | |
358 | && _IO_file_underflow_mmap (fp) == EOF) | |
acbee5f6 RM |
359 | /* Nothing available. _IO_file_underflow_mmap has set the EOF or error |
360 | flags as appropriate. */ | |
361 | return WEOF; | |
284749da UD |
362 | |
363 | /* There is more in the external. Convert it. */ | |
364 | read_stop = (const char *) fp->_IO_read_ptr; | |
0469311e | 365 | |
284749da UD |
366 | if (fp->_wide_data->_IO_buf_base == NULL) |
367 | { | |
368 | /* Maybe we already have a push back pointer. */ | |
369 | if (fp->_wide_data->_IO_save_base != NULL) | |
0469311e | 370 | { |
284749da UD |
371 | free (fp->_wide_data->_IO_save_base); |
372 | fp->_flags &= ~_IO_IN_BACKUP; | |
0469311e | 373 | } |
d18ea0c5 | 374 | _IO_wdoallocbuf (fp); |
284749da | 375 | } |
0469311e | 376 | |
284749da UD |
377 | fp->_wide_data->_IO_last_state = fp->_wide_data->_IO_state; |
378 | fp->_wide_data->_IO_read_base = fp->_wide_data->_IO_read_ptr = | |
379 | fp->_wide_data->_IO_buf_base; | |
aaddc98c MP |
380 | (*cd->__codecvt_do_in) (cd, &fp->_wide_data->_IO_state, |
381 | fp->_IO_read_ptr, fp->_IO_read_end, | |
382 | &read_stop, | |
383 | fp->_wide_data->_IO_read_ptr, | |
384 | fp->_wide_data->_IO_buf_end, | |
385 | &fp->_wide_data->_IO_read_end); | |
0469311e | 386 | |
284749da | 387 | fp->_IO_read_ptr = (char *) read_stop; |
0469311e | 388 | |
284749da UD |
389 | /* If we managed to generate some text return the next character. */ |
390 | if (fp->_wide_data->_IO_read_ptr < fp->_wide_data->_IO_read_end) | |
391 | return *fp->_wide_data->_IO_read_ptr; | |
0469311e | 392 | |
284749da UD |
393 | /* There is some garbage at the end of the file. */ |
394 | __set_errno (EILSEQ); | |
395 | fp->_flags |= _IO_ERR_SEEN; | |
0469311e UD |
396 | return WEOF; |
397 | } | |
398 | ||
acbee5f6 RM |
399 | static wint_t |
400 | _IO_wfile_underflow_maybe_mmap (_IO_FILE *fp) | |
401 | { | |
402 | /* This is the first read attempt. Doing the underflow will choose mmap | |
403 | or vanilla operations and then punt to the chosen underflow routine. | |
404 | Then we can punt to ours. */ | |
405 | if (_IO_file_underflow_maybe_mmap (fp) == EOF) | |
406 | return WEOF; | |
407 | ||
408 | return _IO_WUNDERFLOW (fp); | |
409 | } | |
410 | ||
0469311e | 411 | |
d64b6ad0 UD |
412 | wint_t |
413 | _IO_wfile_overflow (f, wch) | |
414 | _IO_FILE *f; | |
415 | wint_t wch; | |
416 | { | |
417 | if (f->_flags & _IO_NO_WRITES) /* SET ERROR */ | |
418 | { | |
419 | f->_flags |= _IO_ERR_SEEN; | |
420 | __set_errno (EBADF); | |
421 | return WEOF; | |
422 | } | |
423 | /* If currently reading or no buffer allocated. */ | |
424 | if ((f->_flags & _IO_CURRENTLY_PUTTING) == 0) | |
425 | { | |
426 | /* Allocate a buffer if needed. */ | |
427 | if (f->_wide_data->_IO_write_base == 0) | |
428 | { | |
d18ea0c5 | 429 | _IO_wdoallocbuf (f); |
d64b6ad0 UD |
430 | _IO_wsetg (f, f->_wide_data->_IO_buf_base, |
431 | f->_wide_data->_IO_buf_base, f->_wide_data->_IO_buf_base); | |
9c38a689 UD |
432 | |
433 | if (f->_IO_write_base == NULL) | |
434 | { | |
d18ea0c5 | 435 | _IO_doallocbuf (f); |
9c38a689 UD |
436 | _IO_setg (f, f->_IO_buf_base, f->_IO_buf_base, f->_IO_buf_base); |
437 | } | |
d64b6ad0 UD |
438 | } |
439 | else | |
440 | { | |
441 | /* Otherwise must be currently reading. If _IO_read_ptr | |
442 | (and hence also _IO_read_end) is at the buffer end, | |
443 | logically slide the buffer forwards one block (by setting | |
444 | the read pointers to all point at the beginning of the | |
445 | block). This makes room for subsequent output. | |
446 | Otherwise, set the read pointers to _IO_read_end (leaving | |
447 | that alone, so it can continue to correspond to the | |
448 | external position). */ | |
449 | if (f->_wide_data->_IO_read_ptr == f->_wide_data->_IO_buf_end) | |
450 | { | |
451 | f->_IO_read_end = f->_IO_read_ptr = f->_IO_buf_base; | |
452 | f->_wide_data->_IO_read_end = f->_wide_data->_IO_read_ptr = | |
453 | f->_wide_data->_IO_buf_base; | |
454 | } | |
455 | } | |
456 | f->_wide_data->_IO_write_ptr = f->_wide_data->_IO_read_ptr; | |
457 | f->_wide_data->_IO_write_base = f->_wide_data->_IO_write_ptr; | |
458 | f->_wide_data->_IO_write_end = f->_wide_data->_IO_buf_end; | |
459 | f->_wide_data->_IO_read_base = f->_wide_data->_IO_read_ptr = | |
460 | f->_wide_data->_IO_read_end; | |
461 | ||
9c38a689 UD |
462 | f->_IO_write_ptr = f->_IO_read_ptr; |
463 | f->_IO_write_base = f->_IO_write_ptr; | |
464 | f->_IO_write_end = f->_IO_buf_end; | |
465 | f->_IO_read_base = f->_IO_read_ptr = f->_IO_read_end; | |
466 | ||
d64b6ad0 UD |
467 | f->_flags |= _IO_CURRENTLY_PUTTING; |
468 | if (f->_flags & (_IO_LINE_BUF+_IO_UNBUFFERED)) | |
469 | f->_wide_data->_IO_write_end = f->_wide_data->_IO_write_ptr; | |
470 | } | |
471 | if (wch == WEOF) | |
472 | return _IO_do_flush (f); | |
9c38a689 | 473 | if (f->_wide_data->_IO_write_ptr == f->_wide_data->_IO_buf_end) |
d64b6ad0 | 474 | /* Buffer is really full */ |
6dd67bd5 | 475 | if (_IO_do_flush (f) == EOF) |
d64b6ad0 UD |
476 | return WEOF; |
477 | *f->_wide_data->_IO_write_ptr++ = wch; | |
478 | if ((f->_flags & _IO_UNBUFFERED) | |
479 | || ((f->_flags & _IO_LINE_BUF) && wch == L'\n')) | |
6dd67bd5 | 480 | if (_IO_do_flush (f) == EOF) |
d64b6ad0 UD |
481 | return WEOF; |
482 | return wch; | |
483 | } | |
d18ea0c5 | 484 | libc_hidden_def (_IO_wfile_overflow) |
d64b6ad0 UD |
485 | |
486 | wint_t | |
487 | _IO_wfile_sync (fp) | |
488 | _IO_FILE *fp; | |
489 | { | |
490 | _IO_ssize_t delta; | |
491 | wint_t retval = 0; | |
492 | ||
493 | /* char* ptr = cur_ptr(); */ | |
494 | if (fp->_wide_data->_IO_write_ptr > fp->_wide_data->_IO_write_base) | |
495 | if (_IO_do_flush (fp)) | |
496 | return WEOF; | |
497 | delta = fp->_wide_data->_IO_read_ptr - fp->_wide_data->_IO_read_end; | |
498 | if (delta != 0) | |
499 | { | |
500 | /* We have to find out how many bytes we have to go back in the | |
501 | external buffer. */ | |
cd8b7ff9 | 502 | struct _IO_codecvt *cv = fp->_codecvt; |
d64b6ad0 UD |
503 | _IO_off64_t new_pos; |
504 | ||
505 | int clen = (*cv->__codecvt_do_encoding) (cv); | |
506 | ||
507 | if (clen > 0) | |
508 | /* It is easy, a fixed number of input bytes are used for each | |
509 | wide character. */ | |
510 | delta *= clen; | |
511 | else | |
512 | { | |
513 | /* We have to find out the hard way how much to back off. | |
aaddc98c MP |
514 | To do this we determine how much input we needed to |
515 | generate the wide characters up to the current reading | |
516 | position. */ | |
d64b6ad0 UD |
517 | int nread; |
518 | ||
519 | fp->_wide_data->_IO_state = fp->_wide_data->_IO_last_state; | |
520 | nread = (*cv->__codecvt_do_length) (cv, &fp->_wide_data->_IO_state, | |
521 | fp->_IO_read_base, | |
522 | fp->_IO_read_end, delta); | |
523 | fp->_IO_read_ptr = fp->_IO_read_base + nread; | |
524 | delta = -(fp->_IO_read_end - fp->_IO_read_base - nread); | |
525 | } | |
526 | ||
527 | new_pos = _IO_SYSSEEK (fp, delta, 1); | |
528 | if (new_pos != (_IO_off64_t) EOF) | |
529 | { | |
530 | fp->_wide_data->_IO_read_end = fp->_wide_data->_IO_read_ptr; | |
531 | fp->_IO_read_end = fp->_IO_read_ptr; | |
532 | } | |
533 | #ifdef ESPIPE | |
534 | else if (errno == ESPIPE) | |
535 | ; /* Ignore error from unseekable devices. */ | |
536 | #endif | |
537 | else | |
538 | retval = WEOF; | |
539 | } | |
540 | if (retval != WEOF) | |
541 | fp->_offset = _IO_pos_BAD; | |
542 | /* FIXME: Cleanup - can this be shared? */ | |
543 | /* setg(base(), ptr, ptr); */ | |
544 | return retval; | |
545 | } | |
d18ea0c5 | 546 | libc_hidden_def (_IO_wfile_sync) |
d64b6ad0 | 547 | |
4573c6b0 SP |
548 | /* Adjust the internal buffer pointers to reflect the state in the external |
549 | buffer. The content between fp->_IO_read_base and fp->_IO_read_ptr is | |
550 | assumed to be converted and available in the range | |
551 | fp->_wide_data->_IO_read_base and fp->_wide_data->_IO_read_end. | |
552 | ||
553 | Returns 0 on success and -1 on error with the _IO_ERR_SEEN flag set. */ | |
f1d70dad | 554 | static int |
4573c6b0 SP |
555 | adjust_wide_data (_IO_FILE *fp, bool do_convert) |
556 | { | |
557 | struct _IO_codecvt *cv = fp->_codecvt; | |
558 | ||
559 | int clen = (*cv->__codecvt_do_encoding) (cv); | |
560 | ||
561 | /* Take the easy way out for constant length encodings if we don't need to | |
562 | convert. */ | |
563 | if (!do_convert && clen > 0) | |
564 | { | |
565 | fp->_wide_data->_IO_read_end += ((fp->_IO_read_ptr - fp->_IO_read_base) | |
566 | / clen); | |
567 | goto done; | |
568 | } | |
569 | ||
570 | enum __codecvt_result status; | |
571 | const char *read_stop = (const char *) fp->_IO_read_base; | |
572 | do | |
573 | { | |
574 | ||
575 | fp->_wide_data->_IO_last_state = fp->_wide_data->_IO_state; | |
576 | status = (*cv->__codecvt_do_in) (cv, &fp->_wide_data->_IO_state, | |
577 | fp->_IO_read_base, fp->_IO_read_ptr, | |
578 | &read_stop, | |
579 | fp->_wide_data->_IO_read_base, | |
580 | fp->_wide_data->_IO_buf_end, | |
581 | &fp->_wide_data->_IO_read_end); | |
582 | ||
583 | /* Should we return EILSEQ? */ | |
a1ffb40e | 584 | if (__glibc_unlikely (status == __codecvt_error)) |
4573c6b0 SP |
585 | { |
586 | fp->_flags |= _IO_ERR_SEEN; | |
587 | return -1; | |
588 | } | |
589 | } | |
590 | while (__builtin_expect (status == __codecvt_partial, 0)); | |
591 | ||
592 | done: | |
593 | /* Now seek to _IO_read_end to behave as if we have read it all in. */ | |
594 | fp->_wide_data->_IO_read_ptr = fp->_wide_data->_IO_read_end; | |
595 | ||
596 | return 0; | |
597 | } | |
598 | ||
000232b9 | 599 | /* ftell{,o} implementation for wide mode. Don't modify any state of the file |
ea33158c SP |
600 | pointer while we try to get the current state of the stream except in one |
601 | case, which is when we have unflushed writes in append mode. */ | |
000232b9 SP |
602 | static _IO_off64_t |
603 | do_ftell_wide (_IO_FILE *fp) | |
d64b6ad0 | 604 | { |
000232b9 | 605 | _IO_off64_t result, offset = 0; |
adb26fae | 606 | |
000232b9 SP |
607 | /* No point looking for offsets in the buffer if it hasn't even been |
608 | allocated. */ | |
609 | if (fp->_wide_data->_IO_buf_base != NULL) | |
40a982a9 | 610 | { |
000232b9 SP |
611 | const wchar_t *wide_read_base; |
612 | const wchar_t *wide_read_ptr; | |
613 | const wchar_t *wide_read_end; | |
614 | bool was_writing = ((fp->_wide_data->_IO_write_ptr | |
615 | > fp->_wide_data->_IO_write_base) | |
616 | || _IO_in_put_mode (fp)); | |
617 | ||
ea33158c SP |
618 | bool append_mode = (fp->_flags & _IO_IS_APPENDING) == _IO_IS_APPENDING; |
619 | ||
620 | /* When we have unflushed writes in append mode, seek to the end of the | |
621 | file and record that offset. This is the only time we change the file | |
622 | stream state and it is safe since the file handle is active. */ | |
623 | if (was_writing && append_mode) | |
624 | { | |
625 | result = _IO_SYSSEEK (fp, 0, _IO_seek_end); | |
626 | if (result == _IO_pos_BAD) | |
627 | return EOF; | |
628 | else | |
629 | fp->_offset = result; | |
630 | } | |
631 | ||
40a982a9 UD |
632 | /* XXX For wide stream with backup store it is not very |
633 | reasonable to determine the offset. The pushed-back | |
634 | character might require a state change and we need not be | |
635 | able to compute the initial state by reverse transformation | |
636 | since there is no guarantee of symmetry. So we don't even | |
637 | try and return an error. */ | |
638 | if (_IO_in_backup (fp)) | |
639 | { | |
640 | if (fp->_wide_data->_IO_read_ptr < fp->_wide_data->_IO_read_end) | |
641 | { | |
642 | __set_errno (EINVAL); | |
643 | return -1; | |
644 | } | |
645 | ||
000232b9 SP |
646 | /* Nothing in the backup store, so note the backed up pointers |
647 | without changing the state. */ | |
648 | wide_read_base = fp->_wide_data->_IO_save_base; | |
649 | wide_read_ptr = wide_read_base; | |
650 | wide_read_end = fp->_wide_data->_IO_save_end; | |
651 | } | |
652 | else | |
653 | { | |
654 | wide_read_base = fp->_wide_data->_IO_read_base; | |
655 | wide_read_ptr = fp->_wide_data->_IO_read_ptr; | |
656 | wide_read_end = fp->_wide_data->_IO_read_end; | |
40a982a9 UD |
657 | } |
658 | ||
000232b9 SP |
659 | struct _IO_codecvt *cv = fp->_codecvt; |
660 | int clen = (*cv->__codecvt_do_encoding) (cv); | |
661 | ||
662 | if (!was_writing) | |
663 | { | |
664 | if (clen > 0) | |
665 | { | |
666 | offset -= (wide_read_end - wide_read_ptr) * clen; | |
667 | offset -= fp->_IO_read_end - fp->_IO_read_ptr; | |
668 | } | |
669 | else | |
670 | { | |
671 | int nread; | |
672 | ||
673 | size_t delta = wide_read_ptr - wide_read_base; | |
674 | __mbstate_t state = fp->_wide_data->_IO_last_state; | |
675 | nread = (*cv->__codecvt_do_length) (cv, &state, | |
676 | fp->_IO_read_base, | |
677 | fp->_IO_read_end, delta); | |
678 | offset -= fp->_IO_read_end - fp->_IO_read_base - nread; | |
679 | } | |
680 | } | |
681 | else | |
682 | { | |
683 | if (clen > 0) | |
684 | offset += (fp->_wide_data->_IO_write_ptr | |
685 | - fp->_wide_data->_IO_write_base) * clen; | |
686 | else | |
687 | { | |
688 | size_t delta = (fp->_wide_data->_IO_write_ptr | |
689 | - fp->_wide_data->_IO_write_base); | |
690 | ||
691 | /* Allocate enough space for the conversion. */ | |
692 | size_t outsize = delta * sizeof (wchar_t); | |
693 | char *out = malloc (outsize); | |
694 | char *outstop = out; | |
695 | const wchar_t *in = fp->_wide_data->_IO_write_base; | |
696 | ||
697 | enum __codecvt_result status; | |
698 | ||
699 | __mbstate_t state = fp->_wide_data->_IO_last_state; | |
700 | status = (*cv->__codecvt_do_out) (cv, &state, | |
701 | in, in + delta, &in, | |
702 | out, out + outsize, &outstop); | |
703 | ||
704 | /* We don't check for __codecvt_partial because it can be | |
705 | returned on one of two conditions: either the output | |
706 | buffer is full or the input sequence is incomplete. We | |
707 | take care to allocate enough buffer and our input | |
708 | sequences must be complete since they are accepted as | |
709 | wchar_t; if not, then that is an error. */ | |
710 | if (__glibc_unlikely (status != __codecvt_ok)) | |
545583d6 SP |
711 | { |
712 | free (out); | |
713 | return WEOF; | |
714 | } | |
000232b9 SP |
715 | |
716 | offset += outstop - out; | |
984c0ea9 | 717 | free (out); |
000232b9 SP |
718 | } |
719 | ||
2482ae43 SP |
720 | /* We don't trust _IO_read_end to represent the current file offset |
721 | when writing in append mode because the value would have to be | |
722 | shifted to the end of the file during a flush. Use the write base | |
723 | instead, along with the new offset we got above when we did a seek | |
724 | to the end of the file. */ | |
725 | if (append_mode) | |
726 | offset += fp->_IO_write_ptr - fp->_IO_write_base; | |
727 | /* For all other modes, _IO_read_end represents the file offset. */ | |
728 | else | |
729 | offset += fp->_IO_write_ptr - fp->_IO_read_end; | |
000232b9 | 730 | } |
40a982a9 | 731 | } |
d64b6ad0 | 732 | |
ea33158c | 733 | if (fp->_offset != _IO_pos_BAD) |
fa3cd248 SP |
734 | result = fp->_offset; |
735 | else | |
ea33158c | 736 | result = _IO_SYSSEEK (fp, 0, _IO_seek_cur); |
000232b9 SP |
737 | |
738 | if (result == EOF) | |
739 | return result; | |
740 | ||
741 | result += offset; | |
742 | ||
ea33158c SP |
743 | if (result < 0) |
744 | { | |
745 | __set_errno (EINVAL); | |
746 | return EOF; | |
747 | } | |
748 | ||
000232b9 SP |
749 | return result; |
750 | } | |
751 | ||
752 | _IO_off64_t | |
753 | _IO_wfile_seekoff (fp, offset, dir, mode) | |
754 | _IO_FILE *fp; | |
755 | _IO_off64_t offset; | |
756 | int dir; | |
757 | int mode; | |
758 | { | |
759 | _IO_off64_t result; | |
760 | _IO_off64_t delta, new_offset; | |
761 | long int count; | |
762 | ||
763 | /* Short-circuit into a separate function. We don't want to mix any | |
764 | functionality and we don't want to touch anything inside the FILE | |
765 | object. */ | |
766 | if (mode == 0) | |
767 | return do_ftell_wide (fp); | |
768 | ||
769 | /* POSIX.1 8.2.3.7 says that after a call the fflush() the file | |
770 | offset of the underlying file must be exact. */ | |
771 | int must_be_exact = ((fp->_wide_data->_IO_read_base | |
772 | == fp->_wide_data->_IO_read_end) | |
773 | && (fp->_wide_data->_IO_write_base | |
774 | == fp->_wide_data->_IO_write_ptr)); | |
775 | ||
776 | bool was_writing = ((fp->_wide_data->_IO_write_ptr | |
777 | > fp->_wide_data->_IO_write_base) | |
778 | || _IO_in_put_mode (fp)); | |
779 | ||
d64b6ad0 UD |
780 | /* Flush unwritten characters. |
781 | (This may do an unneeded write if we seek within the buffer. | |
782 | But to be able to switch to reading, we would need to set | |
1ffb8c90 | 783 | egptr to pptr. That can't be done in the current design, |
d64b6ad0 UD |
784 | which assumes file_ptr() is eGptr. Anyway, since we probably |
785 | end up flushing when we close(), it doesn't make much difference.) | |
40a982a9 | 786 | FIXME: simulate mem-mapped files. */ |
000232b9 | 787 | if (was_writing && _IO_switch_to_wget_mode (fp)) |
adb26fae | 788 | return WEOF; |
d64b6ad0 UD |
789 | |
790 | if (fp->_wide_data->_IO_buf_base == NULL) | |
791 | { | |
792 | /* It could be that we already have a pushback buffer. */ | |
793 | if (fp->_wide_data->_IO_read_base != NULL) | |
794 | { | |
795 | free (fp->_wide_data->_IO_read_base); | |
796 | fp->_flags &= ~_IO_IN_BACKUP; | |
797 | } | |
d18ea0c5 | 798 | _IO_doallocbuf (fp); |
d64b6ad0 UD |
799 | _IO_setp (fp, fp->_IO_buf_base, fp->_IO_buf_base); |
800 | _IO_setg (fp, fp->_IO_buf_base, fp->_IO_buf_base, fp->_IO_buf_base); | |
801 | _IO_wsetp (fp, fp->_wide_data->_IO_buf_base, | |
802 | fp->_wide_data->_IO_buf_base); | |
803 | _IO_wsetg (fp, fp->_wide_data->_IO_buf_base, | |
804 | fp->_wide_data->_IO_buf_base, fp->_wide_data->_IO_buf_base); | |
805 | } | |
806 | ||
807 | switch (dir) | |
808 | { | |
809 | struct _IO_codecvt *cv; | |
810 | int clen; | |
811 | ||
812 | case _IO_seek_cur: | |
813 | /* Adjust for read-ahead (bytes is buffer). To do this we must | |
aaddc98c MP |
814 | find out which position in the external buffer corresponds to |
815 | the current position in the internal buffer. */ | |
cd8b7ff9 | 816 | cv = fp->_codecvt; |
d64b6ad0 UD |
817 | clen = (*cv->__codecvt_do_encoding) (cv); |
818 | ||
adb26fae | 819 | if (mode != 0 || !was_writing) |
5d2e6976 | 820 | { |
adb26fae SP |
821 | if (clen > 0) |
822 | { | |
823 | offset -= (fp->_wide_data->_IO_read_end | |
824 | - fp->_wide_data->_IO_read_ptr) * clen; | |
825 | /* Adjust by readahead in external buffer. */ | |
826 | offset -= fp->_IO_read_end - fp->_IO_read_ptr; | |
827 | } | |
828 | else | |
829 | { | |
830 | int nread; | |
831 | ||
adb26fae SP |
832 | delta = (fp->_wide_data->_IO_read_ptr |
833 | - fp->_wide_data->_IO_read_base); | |
834 | fp->_wide_data->_IO_state = fp->_wide_data->_IO_last_state; | |
835 | nread = (*cv->__codecvt_do_length) (cv, | |
836 | &fp->_wide_data->_IO_state, | |
837 | fp->_IO_read_base, | |
838 | fp->_IO_read_end, delta); | |
839 | fp->_IO_read_ptr = fp->_IO_read_base + nread; | |
840 | fp->_wide_data->_IO_read_end = fp->_wide_data->_IO_read_ptr; | |
841 | offset -= fp->_IO_read_end - fp->_IO_read_base - nread; | |
842 | } | |
5d2e6976 | 843 | } |
d64b6ad0 UD |
844 | |
845 | if (fp->_offset == _IO_pos_BAD) | |
000232b9 | 846 | goto dumb; |
adb26fae | 847 | |
d64b6ad0 UD |
848 | /* Make offset absolute, assuming current pointer is file_ptr(). */ |
849 | offset += fp->_offset; | |
850 | ||
851 | dir = _IO_seek_set; | |
852 | break; | |
853 | case _IO_seek_set: | |
854 | break; | |
855 | case _IO_seek_end: | |
856 | { | |
c8450f70 | 857 | struct stat64 st; |
d64b6ad0 UD |
858 | if (_IO_SYSSTAT (fp, &st) == 0 && S_ISREG (st.st_mode)) |
859 | { | |
860 | offset += st.st_size; | |
861 | dir = _IO_seek_set; | |
862 | } | |
863 | else | |
864 | goto dumb; | |
865 | } | |
866 | } | |
867 | /* At this point, dir==_IO_seek_set. */ | |
868 | ||
d64b6ad0 UD |
869 | /* If destination is within current buffer, optimize: */ |
870 | if (fp->_offset != _IO_pos_BAD && fp->_IO_read_base != NULL | |
871 | && !_IO_in_backup (fp)) | |
872 | { | |
d840539e AS |
873 | _IO_off64_t start_offset = (fp->_offset |
874 | - (fp->_IO_read_end - fp->_IO_buf_base)); | |
875 | if (offset >= start_offset && offset < fp->_offset) | |
d64b6ad0 | 876 | { |
d840539e AS |
877 | _IO_setg (fp, fp->_IO_buf_base, |
878 | fp->_IO_buf_base + (offset - start_offset), | |
879 | fp->_IO_read_end); | |
880 | _IO_setp (fp, fp->_IO_buf_base, fp->_IO_buf_base); | |
5d2e6976 AS |
881 | _IO_wsetg (fp, fp->_wide_data->_IO_buf_base, |
882 | fp->_wide_data->_IO_buf_base, | |
883 | fp->_wide_data->_IO_buf_base); | |
884 | _IO_wsetp (fp, fp->_wide_data->_IO_buf_base, | |
885 | fp->_wide_data->_IO_buf_base); | |
4573c6b0 SP |
886 | |
887 | if (adjust_wide_data (fp, false)) | |
888 | goto dumb; | |
889 | ||
d64b6ad0 UD |
890 | _IO_mask_flags (fp, 0, _IO_EOF_SEEN); |
891 | goto resync; | |
892 | } | |
d64b6ad0 UD |
893 | } |
894 | ||
d64b6ad0 UD |
895 | if (fp->_flags & _IO_NO_READS) |
896 | goto dumb; | |
897 | ||
898 | /* Try to seek to a block boundary, to improve kernel page management. */ | |
899 | new_offset = offset & ~(fp->_IO_buf_end - fp->_IO_buf_base - 1); | |
900 | delta = offset - new_offset; | |
901 | if (delta > fp->_IO_buf_end - fp->_IO_buf_base) | |
902 | { | |
903 | new_offset = offset; | |
904 | delta = 0; | |
905 | } | |
906 | result = _IO_SYSSEEK (fp, new_offset, 0); | |
907 | if (result < 0) | |
908 | return EOF; | |
909 | if (delta == 0) | |
910 | count = 0; | |
911 | else | |
912 | { | |
913 | count = _IO_SYSREAD (fp, fp->_IO_buf_base, | |
914 | (must_be_exact | |
915 | ? delta : fp->_IO_buf_end - fp->_IO_buf_base)); | |
916 | if (count < delta) | |
917 | { | |
918 | /* We weren't allowed to read, but try to seek the remainder. */ | |
919 | offset = count == EOF ? delta : delta-count; | |
920 | dir = _IO_seek_cur; | |
921 | goto dumb; | |
922 | } | |
923 | } | |
924 | _IO_setg (fp, fp->_IO_buf_base, fp->_IO_buf_base + delta, | |
925 | fp->_IO_buf_base + count); | |
926 | _IO_setp (fp, fp->_IO_buf_base, fp->_IO_buf_base); | |
5d2e6976 AS |
927 | _IO_wsetg (fp, fp->_wide_data->_IO_buf_base, |
928 | fp->_wide_data->_IO_buf_base, fp->_wide_data->_IO_buf_base); | |
929 | _IO_wsetp (fp, fp->_wide_data->_IO_buf_base, fp->_wide_data->_IO_buf_base); | |
4573c6b0 SP |
930 | |
931 | if (adjust_wide_data (fp, true)) | |
932 | goto dumb; | |
933 | ||
d64b6ad0 UD |
934 | fp->_offset = result + count; |
935 | _IO_mask_flags (fp, 0, _IO_EOF_SEEN); | |
936 | return offset; | |
937 | dumb: | |
938 | ||
d18ea0c5 | 939 | _IO_unsave_markers (fp); |
d64b6ad0 UD |
940 | result = _IO_SYSSEEK (fp, offset, dir); |
941 | if (result != EOF) | |
942 | { | |
943 | _IO_mask_flags (fp, 0, _IO_EOF_SEEN); | |
944 | fp->_offset = result; | |
945 | _IO_setg (fp, fp->_IO_buf_base, fp->_IO_buf_base, fp->_IO_buf_base); | |
946 | _IO_setp (fp, fp->_IO_buf_base, fp->_IO_buf_base); | |
40a982a9 UD |
947 | _IO_wsetg (fp, fp->_wide_data->_IO_buf_base, |
948 | fp->_wide_data->_IO_buf_base, fp->_wide_data->_IO_buf_base); | |
949 | _IO_wsetp (fp, fp->_wide_data->_IO_buf_base, | |
950 | fp->_wide_data->_IO_buf_base); | |
d64b6ad0 UD |
951 | } |
952 | return result; | |
953 | ||
954 | resync: | |
955 | /* We need to do it since it is possible that the file offset in | |
956 | the kernel may be changed behind our back. It may happen when | |
957 | we fopen a file and then do a fork. One process may access the | |
ded5b9b7 | 958 | file and the kernel file offset will be changed. */ |
d64b6ad0 UD |
959 | if (fp->_offset >= 0) |
960 | _IO_SYSSEEK (fp, fp->_offset, 0); | |
961 | ||
962 | return offset; | |
963 | } | |
d18ea0c5 | 964 | libc_hidden_def (_IO_wfile_seekoff) |
d64b6ad0 UD |
965 | |
966 | ||
967 | _IO_size_t | |
968 | _IO_wfile_xsputn (f, data, n) | |
969 | _IO_FILE *f; | |
970 | const void *data; | |
971 | _IO_size_t n; | |
972 | { | |
2e09a79a | 973 | const wchar_t *s = (const wchar_t *) data; |
d64b6ad0 UD |
974 | _IO_size_t to_do = n; |
975 | int must_flush = 0; | |
976 | _IO_size_t count; | |
977 | ||
978 | if (n <= 0) | |
979 | return 0; | |
980 | /* This is an optimized implementation. | |
981 | If the amount to be written straddles a block boundary | |
982 | (or the filebuf is unbuffered), use sys_write directly. */ | |
983 | ||
984 | /* First figure out how much space is available in the buffer. */ | |
985 | count = f->_wide_data->_IO_write_end - f->_wide_data->_IO_write_ptr; | |
986 | if ((f->_flags & _IO_LINE_BUF) && (f->_flags & _IO_CURRENTLY_PUTTING)) | |
987 | { | |
988 | count = f->_wide_data->_IO_buf_end - f->_wide_data->_IO_write_ptr; | |
989 | if (count >= n) | |
990 | { | |
2e09a79a | 991 | const wchar_t *p; |
d64b6ad0 UD |
992 | for (p = s + n; p > s; ) |
993 | { | |
994 | if (*--p == L'\n') | |
995 | { | |
996 | count = p - s + 1; | |
997 | must_flush = 1; | |
998 | break; | |
999 | } | |
1000 | } | |
1001 | } | |
1002 | } | |
1003 | /* Then fill the buffer. */ | |
1004 | if (count > 0) | |
1005 | { | |
1006 | if (count > to_do) | |
1007 | count = to_do; | |
1008 | if (count > 20) | |
1009 | { | |
1010 | #ifdef _LIBC | |
1011 | f->_wide_data->_IO_write_ptr = | |
1012 | __wmempcpy (f->_wide_data->_IO_write_ptr, s, count); | |
1013 | #else | |
1014 | wmemcpy (f->_wide_data->_IO_write_ptr, s, count); | |
1015 | f->_wide_data->_IO_write_ptr += count; | |
1016 | #endif | |
1017 | s += count; | |
1018 | } | |
1019 | else | |
1020 | { | |
2e09a79a JM |
1021 | wchar_t *p = f->_wide_data->_IO_write_ptr; |
1022 | int i = (int) count; | |
d64b6ad0 UD |
1023 | while (--i >= 0) |
1024 | *p++ = *s++; | |
1025 | f->_wide_data->_IO_write_ptr = p; | |
1026 | } | |
1027 | to_do -= count; | |
1028 | } | |
1029 | if (to_do > 0) | |
d18ea0c5 | 1030 | to_do -= _IO_wdefault_xsputn (f, s, to_do); |
d64b6ad0 UD |
1031 | if (must_flush |
1032 | && f->_wide_data->_IO_write_ptr != f->_wide_data->_IO_write_base) | |
d18ea0c5 AS |
1033 | _IO_wdo_write (f, f->_wide_data->_IO_write_base, |
1034 | f->_wide_data->_IO_write_ptr | |
1035 | - f->_wide_data->_IO_write_base); | |
d64b6ad0 UD |
1036 | |
1037 | return n - to_do; | |
1038 | } | |
d18ea0c5 | 1039 | libc_hidden_def (_IO_wfile_xsputn) |
d64b6ad0 UD |
1040 | |
1041 | ||
b2637a22 | 1042 | const struct _IO_jump_t _IO_wfile_jumps = |
d64b6ad0 UD |
1043 | { |
1044 | JUMP_INIT_DUMMY, | |
1045 | JUMP_INIT(finish, _IO_new_file_finish), | |
d18ea0c5 AS |
1046 | JUMP_INIT(overflow, (_IO_overflow_t) _IO_wfile_overflow), |
1047 | JUMP_INIT(underflow, (_IO_underflow_t) _IO_wfile_underflow), | |
1048 | JUMP_INIT(uflow, (_IO_underflow_t) _IO_wdefault_uflow), | |
1049 | JUMP_INIT(pbackfail, (_IO_pbackfail_t) _IO_wdefault_pbackfail), | |
1050 | JUMP_INIT(xsputn, _IO_wfile_xsputn), | |
1051 | JUMP_INIT(xsgetn, _IO_file_xsgetn), | |
1052 | JUMP_INIT(seekoff, _IO_wfile_seekoff), | |
d64b6ad0 UD |
1053 | JUMP_INIT(seekpos, _IO_default_seekpos), |
1054 | JUMP_INIT(setbuf, _IO_new_file_setbuf), | |
d18ea0c5 | 1055 | JUMP_INIT(sync, (_IO_sync_t) _IO_wfile_sync), |
d64b6ad0 | 1056 | JUMP_INIT(doallocate, _IO_wfile_doallocate), |
d18ea0c5 | 1057 | JUMP_INIT(read, _IO_file_read), |
d64b6ad0 | 1058 | JUMP_INIT(write, _IO_new_file_write), |
d18ea0c5 AS |
1059 | JUMP_INIT(seek, _IO_file_seek), |
1060 | JUMP_INIT(close, _IO_file_close), | |
1061 | JUMP_INIT(stat, _IO_file_stat), | |
d64b6ad0 UD |
1062 | JUMP_INIT(showmanyc, _IO_default_showmanyc), |
1063 | JUMP_INIT(imbue, _IO_default_imbue) | |
1064 | }; | |
15a686af | 1065 | libc_hidden_data_def (_IO_wfile_jumps) |
0469311e UD |
1066 | |
1067 | ||
b2637a22 | 1068 | const struct _IO_jump_t _IO_wfile_jumps_mmap = |
0469311e UD |
1069 | { |
1070 | JUMP_INIT_DUMMY, | |
1071 | JUMP_INIT(finish, _IO_new_file_finish), | |
d18ea0c5 | 1072 | JUMP_INIT(overflow, (_IO_overflow_t) _IO_wfile_overflow), |
0469311e | 1073 | JUMP_INIT(underflow, (_IO_underflow_t) _IO_wfile_underflow_mmap), |
d18ea0c5 AS |
1074 | JUMP_INIT(uflow, (_IO_underflow_t) _IO_wdefault_uflow), |
1075 | JUMP_INIT(pbackfail, (_IO_pbackfail_t) _IO_wdefault_pbackfail), | |
1076 | JUMP_INIT(xsputn, _IO_wfile_xsputn), | |
1077 | JUMP_INIT(xsgetn, _IO_file_xsgetn), | |
1078 | JUMP_INIT(seekoff, _IO_wfile_seekoff), | |
0469311e | 1079 | JUMP_INIT(seekpos, _IO_default_seekpos), |
bff334e0 | 1080 | JUMP_INIT(setbuf, _IO_file_setbuf_mmap), |
d18ea0c5 | 1081 | JUMP_INIT(sync, (_IO_sync_t) _IO_wfile_sync), |
0469311e | 1082 | JUMP_INIT(doallocate, _IO_wfile_doallocate), |
d18ea0c5 | 1083 | JUMP_INIT(read, _IO_file_read), |
0469311e | 1084 | JUMP_INIT(write, _IO_new_file_write), |
d18ea0c5 | 1085 | JUMP_INIT(seek, _IO_file_seek), |
0469311e | 1086 | JUMP_INIT(close, _IO_file_close_mmap), |
d18ea0c5 | 1087 | JUMP_INIT(stat, _IO_file_stat), |
0469311e UD |
1088 | JUMP_INIT(showmanyc, _IO_default_showmanyc), |
1089 | JUMP_INIT(imbue, _IO_default_imbue) | |
1090 | }; | |
acbee5f6 | 1091 | |
b2637a22 | 1092 | const struct _IO_jump_t _IO_wfile_jumps_maybe_mmap = |
acbee5f6 RM |
1093 | { |
1094 | JUMP_INIT_DUMMY, | |
1095 | JUMP_INIT(finish, _IO_new_file_finish), | |
d18ea0c5 | 1096 | JUMP_INIT(overflow, (_IO_overflow_t) _IO_wfile_overflow), |
acbee5f6 | 1097 | JUMP_INIT(underflow, (_IO_underflow_t) _IO_wfile_underflow_maybe_mmap), |
d18ea0c5 AS |
1098 | JUMP_INIT(uflow, (_IO_underflow_t) _IO_wdefault_uflow), |
1099 | JUMP_INIT(pbackfail, (_IO_pbackfail_t) _IO_wdefault_pbackfail), | |
1100 | JUMP_INIT(xsputn, _IO_wfile_xsputn), | |
1101 | JUMP_INIT(xsgetn, _IO_file_xsgetn), | |
1102 | JUMP_INIT(seekoff, _IO_wfile_seekoff), | |
acbee5f6 RM |
1103 | JUMP_INIT(seekpos, _IO_default_seekpos), |
1104 | JUMP_INIT(setbuf, _IO_file_setbuf_mmap), | |
d18ea0c5 | 1105 | JUMP_INIT(sync, (_IO_sync_t) _IO_wfile_sync), |
acbee5f6 | 1106 | JUMP_INIT(doallocate, _IO_wfile_doallocate), |
d18ea0c5 | 1107 | JUMP_INIT(read, _IO_file_read), |
acbee5f6 | 1108 | JUMP_INIT(write, _IO_new_file_write), |
d18ea0c5 AS |
1109 | JUMP_INIT(seek, _IO_file_seek), |
1110 | JUMP_INIT(close, _IO_file_close), | |
1111 | JUMP_INIT(stat, _IO_file_stat), | |
acbee5f6 RM |
1112 | JUMP_INIT(showmanyc, _IO_default_showmanyc), |
1113 | JUMP_INIT(imbue, _IO_default_imbue) | |
1114 | }; |