Function GetScriptExtensions

libs/drape/harfbuzz_shaping.cpp:25–38

Writes the script and the script extensions of the Unicode codepoint. Returns the number of written scripts.

// Writes the script and the script extensions of the Unicode codepoint.
// Returns the number of written scripts.
size_t GetScriptExtensions(char32_t codepoint, TScriptsArray & scripts)
{
  // Fill scripts with the script extensions.
  UErrorCode icu_error = U_ZERO_ERROR;
  size_t const count = uscript_getScriptExtensions(static_cast<UChar32>(codepoint), scripts.data(),
                                                   static_cast<int32_t>(scripts.max_size()), &icu_error);
  if (U_FAILURE(icu_error))
  {
    LOG(LWARNING, ("uscript_getScriptExtensions failed with error", icu_error));
    return 0;
  }

  return count;
}

// Intersects the script extensions set of codepoint with scripts and returns the updated size of the scripts.
// The output result will be a subset of the input result (thus resultSize can only be smaller).