BloombergLP::bdlde::Utf8CheckingInStreamBufWrapper::xsgetn

Read up to the specified numBytes characters from this object to the specified buffer and return the number of characters successfully read. A return value of 0 means that either a UTF‐8 error or end of file has been encountered (errorStatus must be called to distinguish between the two), but a non‐zero return value less than numBytes will usually be returned when neither end of file nor a UTF‐8 error has been encountered. The behavior is undefined unless 4 <= numBytes. Note that this function is forwarded to by the public method sgetn in the base class.

Synopsis

Declared in <bdlde_utf8checkinginstreambufwrapper.h>

virtual
std::streamsize
xsgetn(
    char* buffer,
    std::streamsize numBytes) override;

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