Function unicode_escape

java/idl2jni/codegen/im_java.cpp:362–406

}

string unicode_escape(int in, bool char_literal = false)
{
  switch (in) {
  case '\'':
  case '\"':
  case '\\':
    return string("\\") + static_cast<char>(in);
  case '\b':
    return "\\b";
  case '\f':
    return "\\f";
  case '\n':
    return "\\n";
  case '\r':
    return "\\r";
  case '\t':
    return "\\t";
  }

  if (in <= UCHAR_MAX && isprint(in)) {
    return string(1, static_cast<char>(in));
  }

  if (in > 0x10ffff) {
    return "error: out-of-range character";
  }

  if (in <= 0xffff) {
    string escaped = "\\u____";
    ACE_OS::snprintf(&escaped[2], 5, "%04x", in);
    return escaped;
  }

  if (char_literal) {
    return "error: char literals larger than \\uffff are not valid in Java";
  }

  // Java uses a UTF-16 Surrogate Pair to represent larger characters, with
  // each surrogate represented as its own \uXXXX escape in the source code.
  const unsigned int lead = 0xd7c0 + static_cast<unsigned>(in >> 10);
  const unsigned int trail = 0xdc0 + static_cast<unsigned>(in & 0x3ff);
  string escaped(13, '\0');
  ACE_OS::snprintf(&escaped[0], escaped.size(), "\\u%04x\\u%04x", lead, trail);
  return escaped;
}

string unicode_escape(const char* in)
{