Method Regex

src/openassetio-core/src/utils/Regex.cpp:38–67

}  // namespace

Regex::Regex(const std::string_view pattern) {
  int errorCode = 0;
  std::size_t errorOffset = 0;

  static_assert(sizeof(std::string_view::value_type) == sizeof(std::remove_pointer_t<PCRE2_SPTR8>),
                "PCRE2 char type size mismatch");

  code_ = pcre2_compile(
      // NOLINTNEXTLINE(cppcoreguidelines-pro-type-reinterpret-cast)
      reinterpret_cast<PCRE2_SPTR8>(pattern.data()), pattern.size(),
      PCRE2_CASELESS | PCRE2_DOLLAR_ENDONLY |
          PCRE2_DOTALL, /* case-insensitive; `$` matches end of string; `.` matches newlines */
      &errorCode,       /* error number */
      &errorOffset,     /* error offset */
      nullptr);         /* use default compile context */

  if (code_ == nullptr) {
    throw errors::InputValidationException{fmt::format(
        "Error {} compiling regex '{}': {}", errorCode, pattern, errorCodeToMessage(errorCode))};
  }

  // Extra performance JIT compile. We don't care about partial
  // matches.
  errorCode = pcre2_jit_compile(code_, PCRE2_JIT_COMPLETE);

  if (errorCode != 0) {
    throw errors::InputValidationException{fmt::format(
        "Error {} JIT compiling '{}': {}", errorCode, pattern, errorCodeToMessage(errorCode))};
  }
}

Regex::~Regex() { pcre2_code_free(code_); }