Function ConvertFilterToRegex

Modules/RESTAPI/src/mitkDataStorageBridge.cpp:199–224

* @brief Convert a filter pattern with wildcards into a regex string. * * Escapes all regex-special characters in the literal segments and maps * wildcard characters to their regex equivalents: * - '*' -> '.*' (match zero or more characters) * - '?' -> '.' (match exactly one character) * * The result is anchored with ^ and $ for a full-string match. * * @pre filterPatte

   * @return A regex string that matches the same semantics.
   */
  std::string ConvertFilterToRegex(const std::string& filterPattern)
  {
    std::string regex = "^";

    for (char c : filterPattern)
    {
      switch (c)
      {
        case '*': regex += ".*"; break;
        case '?': regex += "."; break;
        // Escape regex-special characters
        case '.': case '+': case '(': case ')':
        case '[': case ']': case '{': case '}':
        case '\\': case '^': case '$': case '|':
          regex += '\\';
          regex += c;
          break;
        default:
          regex += c;
          break;
      }
    }

    regex += "$";
    return regex;
  }

  /**
   * @brief Check if a filter pattern contains wildcard characters (* or ?).