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path: root/lib/libc/stdio/ungetwc.c
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* Next stage of stdio cleanup: Retire __sFILEX and merge the fields back intoJohn Baldwin2008-04-171-1/+1
| | | | | | | | | | | | | | | | | | | | | | __sFILE. This was supposed to be done in 6.0. Some notes: - Where possible I restored the various lines to their pre-__sFILEX state. - Retire INITEXTRA() and just initialize the wchar bits (orientation and mbstate) explicitly instead. The various places that used INITEXTRA didn't need the locking fields or _up initialized. (Some places needed _up to exist and not be off the end of a NULL or garbage pointer, but they didn't require it to be initialized to a specific value.) - For now, stdio.h "knows" that pthread_t is a 'struct pthread *' to avoid namespace pollution of including all the pthread types in stdio.h. Once we remove all the inlines and make __sFILE private it can go back to using pthread_t, etc. - This does not remove any of the inlines currently and does not change any of the public ABI of 'FILE'. MFC after: 1 month Reviewed by: peter Notes: svn path=/head/; revision=178287
* Include <sys/types.h> and <limits.h> ourselves, don't assume they are includedStefan Farfeleder2005-08-201-0/+1
| | | | | | | | | | | | | through <pthread.h>. gen/sem.c: Prerequisite for <_semaphore.h> net/getprotoent.c: USHRT_MAX net/getservent.c: USHRT_MAX stdio/ungetwc.c: MB_LEN_MAX stdio/vfwscanf.c: MB_LEN_MAX Notes: svn path=/head/; revision=149313
* Call __mbrtowc() and __wcrtomb() directly instead of taking detoursTim J. Robbins2004-07-201-1/+2
| | | | | | | through mbrtowc() and wcrtomb(). Notes: svn path=/head/; revision=132442
* Associate a multibyte conversion state object with each stream. Reset itTim J. Robbins2004-05-221-5/+2
| | | | | | | | | | | | to the initial state when a stream is opened or seeked upon. Use the stream's conversion state object instead of a freshly-zeroed one in fgetwc(), fputwc() and ungetwc(). This is only a performance improvement for now, but it would also be required in order to support state-dependent encodings. Notes: svn path=/head/; revision=129583
* Prepare to handle trivial state-dependent encodings. Full support forTim J. Robbins2004-04-071-1/+4
| | | | | | | | state-dependent encodings with locking shifts will come later if there is demand for it. Notes: svn path=/head/; revision=128002
* Pass mbrtowc() and wcrtomb() NULL instead of a pointer to a freshly zeroedTim J. Robbins2003-11-041-3/+1
| | | | | | | | | | mbstate_t object that they ignore. The zeroing is fairly expensive, and it will never be necessary in these functions; when we support state-dependent encodings, we will pass in a pointer to the file's mbstate_t object, and only zero it at the time the file gets opened. Notes: svn path=/head/; revision=122042
* Set the error bit on the stream if an encoding error occurs. ImproveTim J. Robbins2002-10-161-1/+3
| | | | | | | handling of multibyte sequences representing null wide characters. Notes: svn path=/head/; revision=105234
* Add an unlocked version of ungetwc(), __ungetwc(), that __vfwscanf()Tim J. Robbins2002-09-221-9/+21
| | | | | | | will need to use. Notes: svn path=/head/; revision=103782
* Lock and unlock the file once per call and use the unlocked version ofTim J. Robbins2002-09-201-7/+11
| | | | | | | ungetc() instead of having ungetc() recurse on the lock. Notes: svn path=/head/; revision=103677
* Reimplement the functionality of fgetrune(), fputrune(), and fungetrune()Tim J. Robbins2002-09-181-2/+15
| | | | | | | | | here in terms of mbrtowc(), wcrtomb(), and the single-byte I/O functions. The rune I/O functions are about to become deprecated in favour of the ones provided by ISO C90 Amd. 1 and C99. Notes: svn path=/head/; revision=103523
* Basic support for wide character I/O: getwc(), fgetwc(), getwchar(),Tim J. Robbins2002-08-131-0/+46
putwc(), fputwc(), putwchar(), ungetwc(), fwide(). Notes: svn path=/head/; revision=101776
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