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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-24 04:52:22 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-24 04:52:22 +0000 |
commit | 7f3caba522f4d24764f29d83aa2de9198bb7f01c (patch) | |
tree | 66b798ea74302325d6a5c11df044cbe4bb845af1 /man3/mbrtowc.3 | |
parent | Adding upstream version 6.7. (diff) | |
download | manpages-7f3caba522f4d24764f29d83aa2de9198bb7f01c.tar.xz manpages-7f3caba522f4d24764f29d83aa2de9198bb7f01c.zip |
Adding upstream version 6.8.upstream/6.8upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'man3/mbrtowc.3')
-rw-r--r-- | man3/mbrtowc.3 | 201 |
1 files changed, 0 insertions, 201 deletions
diff --git a/man3/mbrtowc.3 b/man3/mbrtowc.3 deleted file mode 100644 index c35f540..0000000 --- a/man3/mbrtowc.3 +++ /dev/null @@ -1,201 +0,0 @@ -'\" t -.\" Copyright (c) Bruno Haible <haible@clisp.cons.org> -.\" -.\" SPDX-License-Identifier: GPL-2.0-or-later -.\" -.\" References consulted: -.\" GNU glibc-2 source code and manual -.\" Dinkumware C library reference http://www.dinkumware.com/ -.\" OpenGroup's Single UNIX specification -.\" http://www.UNIX-systems.org/online.html -.\" ISO/IEC 9899:1999 -.\" -.TH mbrtowc 3 2023-10-31 "Linux man-pages 6.7" -.SH NAME -mbrtowc \- convert a multibyte sequence to a wide character -.SH LIBRARY -Standard C library -.RI ( libc ", " \-lc ) -.SH SYNOPSIS -.nf -.B #include <wchar.h> -.P -.BI "size_t mbrtowc(wchar_t *restrict " pwc ", const char " s "[restrict ." n ], -.BI " size_t " n ", mbstate_t *restrict " ps ); -.fi -.SH DESCRIPTION -The main case for this function is when -.I s -is not NULL and -.I pwc -is -not NULL. -In this case, the -.BR mbrtowc () -function inspects at most -.I n -bytes of the multibyte string starting at -.IR s , -extracts the next complete -multibyte character, converts it to a wide character and stores it at -.IR *pwc . -It updates the shift state -.IR *ps . -If the converted wide -character is not L\[aq]\e0\[aq] (the null wide character), -it returns the number of bytes that were consumed -from -.IR s . -If the converted wide character is L\[aq]\e0\[aq], it resets the shift -state -.I *ps -to the initial state and returns 0. -.P -If the -.I n -bytes starting at -.I s -do not contain a complete multibyte -character, -.BR mbrtowc () -returns -.IR "(size_t)\ \-2" . -This can happen even if -.I n ->= -.IR MB_CUR_MAX , -if the multibyte string contains redundant shift -sequences. -.P -If the multibyte string starting at -.I s -contains an invalid multibyte -sequence before the next complete character, -.BR mbrtowc () -returns -.I (size_t)\ \-1 -and sets -.I errno -to -.BR EILSEQ . -In this case, -the effects on -.I *ps -are undefined. -.P -A different case is when -.I s -is not NULL but -.I pwc -is NULL. -In this case, the -.BR mbrtowc () -function behaves as above, except that it does not -store the converted wide character in memory. -.P -A third case is when -.I s -is NULL. -In this case, -.I pwc -and -.I n -are -ignored. -If the conversion state represented by -.I *ps -denotes an -incomplete multibyte character conversion, the -.BR mbrtowc () -function -returns -.IR "(size_t)\ \-1" , -sets -.I errno -to -.BR EILSEQ , -and -leaves -.I *ps -in an undefined state. -Otherwise, the -.BR mbrtowc () -function -puts -.I *ps -in the initial state and returns 0. -.P -In all of the above cases, if -.I ps -is NULL, a static anonymous -state known only to the -.BR mbrtowc () -function is used instead. -Otherwise, -.I *ps -must be a valid -.I mbstate_t -object. -An -.I mbstate_t -object -.I a -can be initialized to the initial state -by zeroing it, for example using -.P -.in +4n -.EX -memset(&a, 0, sizeof(a)); -.EE -.in -.SH RETURN VALUE -The -.BR mbrtowc () -function returns the number of bytes parsed from the -multibyte sequence starting at -.IR s , -if a non-L\[aq]\e0\[aq] wide character -was recognized. -It returns 0, if a L\[aq]\e0\[aq] wide character was recognized. -It returns -.I (size_t)\ \-1 -and sets -.I errno -to -.BR EILSEQ , -if an invalid multibyte sequence was -encountered. -It returns -.I "(size_t)\ \-2" -if it couldn't parse a complete multibyte -character, meaning that -.I n -should be increased. -.SH ATTRIBUTES -For an explanation of the terms used in this section, see -.BR attributes (7). -.TS -allbox; -lbx lb lb -l l l. -Interface Attribute Value -T{ -.na -.nh -.BR mbrtowc () -T} Thread safety MT-Unsafe race:mbrtowc/!ps -.TE -.SH STANDARDS -C11, POSIX.1-2008. -.SH HISTORY -POSIX.1-2001, C99. -.SH NOTES -The behavior of -.BR mbrtowc () -depends on the -.B LC_CTYPE -category of the -current locale. -.SH SEE ALSO -.BR mbsinit (3), -.BR mbsrtowcs (3) |