std::text_encoding::comp-name

static constexpr bool /*comp-name*/( std::string_view a, std::string_view b );

Compares two strings a and b encoded in ordinary literal encoding following the Unicode Charset Alias Matching rules.

Two strings are considered equal when comparing from left to right after:

• removing all non-alphanumeric characters,
• converting all letters to the same case, and
• removing any standalone sequences of '0' characters that do not immediately follow a numeric prefix. A numeric prefix consists of a non-zero digit ('1' through '9') optionally followed by one or more non-alphanumeric characters.

Here are the following examples:

static_assert(/*comp-name*/("UTF-8", "utf8") == true);
static_assert(/*comp-name*/("u.t.f-008", "utf8") == true);
static_assert(/*comp-name*/("ISO-8859-1", "iso88591") == true);
static_assert(/*comp-name*/("ut8", "utf8") == false);
static_assert(/*comp-name*/("utf-80", "utf8") == false);

Parameters

Return value

true if two strings compare equal as described above; false otherwise.