MBLEN(3) BSD Library Functions Manual MBLEN(3)NAME
mblen -- get number of bytes in a character
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <stdlib.h>
int
mblen(const char *mbchar, size_t nbytes);
DESCRIPTION
The mblen() function computes the length in bytes of a multibyte character mbchar according to the current conversion state. Up to nbytes
bytes are examined.
A call with a null mbchar pointer returns nonzero if the current locale requires shift states, zero otherwise; if shift states are required,
the shift state is reset to the initial state.
RETURN VALUES
If mbchar is NULL, the mblen() function returns nonzero if shift states are supported, zero otherwise.
Otherwise, if mbchar is not a null pointer, mblen() either returns 0 if mbchar represents the null wide character, or returns the number of
bytes processed in mbchar, or returns -1 if no multibyte character could be recognized or converted. In this case, mblen()'s internal con-
version state is undefined.
ERRORS
The mblen() function will fail if:
[EILSEQ] An invalid multibyte sequence was detected.
[EINVAL] The internal conversion state is not valid.
SEE ALSO mbrlen(3), mbtowc(3), multibyte(3)STANDARDS
The mblen() function conforms to ISO/IEC 9899:1999 (``ISO C99'').
BSD April 11, 2004 BSD
Check Out this Related Man Page
MBTOWC(3) BSD Library Functions Manual MBTOWC(3)NAME
mbtowc -- convert a character to a wide-character code
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <stdlib.h>
int
mbtowc(wchar_t * restrict wcharp, const char * restrict mbchar, size_t nbytes);
DESCRIPTION
The mbtowc() function converts a multibyte character mbchar into a wide character according to the current conversion state, and stores the
result in the object pointed to by wcharp. Up to nbytes bytes are examined.
A call with a null mbchar pointer returns nonzero if the current encoding requires shift states, zero otherwise; if shift states are
required, the shift state is reset to the initial state.
RETURN VALUES
If mbchar is NULL, the mbtowc() function returns nonzero if shift states are supported, zero otherwise.
Otherwise, if mbchar is not a null pointer, mbtowc() either returns 0 if mbchar represents the null wide character, or returns the number of
bytes processed in mbchar, or returns -1 if no multibyte character could be recognized or converted. In this case, mbtowc()'s internal con-
version state is undefined.
ERRORS
The mbtowc() function will fail if:
[EILSEQ] An invalid multibyte sequence was detected.
[EINVAL] The internal conversion state is invalid.
SEE ALSO btowc(3), mblen(3), mbrtowc(3), mbstowcs(3), multibyte(3), wctomb(3)STANDARDS
The mbtowc() function conforms to ISO/IEC 9899:1999 (``ISO C99'').
BSD April 11, 2004 BSD
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