BloombergLP::bdlde::Utf8Util::numBytesIfValid

Return the byte length of the first numCodePoints encodings.

Synopsis

Declared in <bdlde_utf8util.h>

static
Utf8Util::IntPtr
numBytesIfValid(
    std::string_view const& string,
    IntPtr numCodePoints);

Description

Return the length (in bytes) of the specified numCodePoints UTF‐8 encodings in the specified string, or a value less than 0 if string contains less than numCodePoints encodings. The behavior is undefined unless string refers to valid UTF‐8. Note that string may contain more than numCodePoints encodings in which case the trailing ones are ignored.

DEPRECATED: Use numBytesRaw instead.

Return Value

byte length of those encodings, or a negative value if fewer

Parameters

Name

Description

string

valid UTF‐8 string view to measure

numCodePoints

number of leading code points to measure

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