mbrlen()

Высчитать количество байт в строке из многобайтовых символов (с повторным запуском)

Прототип:

#include <wchar.h>
                                       
size_t mbrlen( const char *s,
               size_t n,
               mbstate_t *ps);

Аргументы:

s

A pointer to a multibyte character.

n

The maximum number of bytes that you want to count.

ps

An internal pointer that lets mbrlen() be a restartable version of mblen(); if ps is NULL, mbrlen() uses its own internal variable. You can call mbsinit() to determine the status of this variable.

Библиотека:

libc

Описание:

The mbrlen() function counts the bytes in the multibyte character pointed to by s, to a maximum of n bytes.

Возвращаемое значение:

(size_t)-2

The resulting conversion state indicates an incomplete multibyte character after all n characters were converted.

(size_t)-1

The function detected an encoding error before completing the next multibyte character, in which case the function errno to EILSEQ and leaves the resulting conversion state undefined.

0

The next completed character is a null character, in which case the resulting conversion state is the initial conversion state.

x

The number of bytes needed to complete the next multibyte character, in which case the resulting conversion state indicates that x bytes have been converted.

Коды ошибок:

EILSEQ

Invalid character sequence.

EINVAL

The ps argument points to an invalid object.

Классификация:

ANSI, POSIX 1003.1

Точка остановки потока

Нет

Обработчик прерываний

Нет

Обработчик сигналов

Да

В потоке

Да

Тематические ссылки:

errno mblen(), mbrtowc(), mbsinit(), mbsrtowcs(), mbstowcs(), mbtowc()

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