asner.cxx

pwlib源码库

PINDEX PASN_Choice::GetDataLength() const
{
  if (CheckCreate())
    return choice->GetDataLength();

  return 0;
}


BOOL PASN_Choice::IsPrimitive() const
{
  if (CheckCreate())
    return choice->IsPrimitive();
  return FALSE;
}


BOOL PASN_Choice::Decode(PASN_Stream & strm)
{
  return strm.ChoiceDecode(*this);
}


void PASN_Choice::Encode(PASN_Stream & strm) const
{
  strm.ChoiceEncode(*this);
}


///////////////////////////////////////////////////////////////////////

PASN_Sequence::PASN_Sequence(unsigned tag, TagClass tagClass,
                             unsigned nOpts, BOOL extend, unsigned nExtend)
  : PASN_Object(tag, tagClass, extend)
{
  optionMap.SetConstraints(PASN_ConstrainedObject::FixedConstraint, nOpts);
  knownExtensions = nExtend;
  totalExtensions = 0;
  endBasicEncoding = 0;
}


PASN_Sequence::PASN_Sequence(const PASN_Sequence & other)
  : PASN_Object(other),
    fields(other.fields.GetSize()),
    optionMap(other.optionMap),
    extensionMap(other.extensionMap)
{
  for (PINDEX i = 0; i < other.fields.GetSize(); i++)
    fields.SetAt(i, other.fields[i].Clone());

  knownExtensions = other.knownExtensions;
  totalExtensions = other.totalExtensions;
  endBasicEncoding = 0;
}


PASN_Sequence & PASN_Sequence::operator=(const PASN_Sequence & other)
{
  PASN_Object::operator=(other);

  fields.SetSize(other.fields.GetSize());
  for (PINDEX i = 0; i < other.fields.GetSize(); i++)
    fields.SetAt(i, other.fields[i].Clone());

  optionMap = other.optionMap;
  knownExtensions = other.knownExtensions;
  totalExtensions = other.totalExtensions;
  extensionMap = other.extensionMap;

  return *this;
}


BOOL PASN_Sequence::HasOptionalField(PINDEX opt) const
{
  if (opt < (PINDEX)optionMap.GetSize())
    return optionMap[opt];
  else
    return extensionMap[opt - optionMap.GetSize()];
}


void PASN_Sequence::IncludeOptionalField(PINDEX opt)
{
  if (opt < (PINDEX)optionMap.GetSize())
    optionMap.Set(opt);
  else {
    PAssert(extendable, "Must be extendable type");
    opt -= optionMap.GetSize();
    if (opt >= (PINDEX)extensionMap.GetSize())
      extensionMap.SetSize(opt+1);
    extensionMap.Set(opt);
  }
}


void PASN_Sequence::RemoveOptionalField(PINDEX opt)
{
  if (opt < (PINDEX)optionMap.GetSize())
    optionMap.Clear(opt);
  else {
    PAssert(extendable, "Must be extendable type");
    opt -= optionMap.GetSize();
    extensionMap.Clear(opt);
  }
}


PObject::Comparison PASN_Sequence::Compare(const PObject & obj) const
{
  PAssert(PIsDescendant(&obj, PASN_Sequence), PInvalidCast);
  const PASN_Sequence & other = (const PASN_Sequence &)obj;
  return fields.Compare(other.fields);
}


PObject * PASN_Sequence::Clone() const
{
  PAssert(IsClass(PASN_Sequence::Class()), PInvalidCast);
  return new PASN_Sequence(*this);
}


void PASN_Sequence::PrintOn(ostream & strm) const
{
  int indent = strm.precision() + 2;
  strm << "{\n";
  for (PINDEX i = 0; i < fields.GetSize(); i++) {
    strm << setw(indent+6) << "field[" << i << "] <";
    switch (fields[i].GetTagClass()) {
      case UniversalTagClass :
        strm << "Universal";
        break;
      case ApplicationTagClass :
        strm << "Application";
        break;
      case ContextSpecificTagClass :
        strm << "ContextSpecific";
        break;
      case PrivateTagClass :
        strm << "Private";
      default :
        break;
    }
    strm << '-' << fields[i].GetTag() << '-'
         << fields[i].GetTypeAsString() << "> = "
         << fields[i] << '\n';
  }
  strm << setw(indent-1) << "}";
}


PString PASN_Sequence::GetTypeAsString() const
{
  return "Sequence";
}


PINDEX PASN_Sequence::GetDataLength() const
{
  PINDEX len = 0;
  for (PINDEX i = 0; i < fields.GetSize(); i++)
    len += fields[i].GetObjectLength();
  return len;
}


BOOL PASN_Sequence::IsPrimitive() const
{
  return FALSE;
}


BOOL PASN_Sequence::Decode(PASN_Stream & strm)
{
  return PreambleDecode(strm) && UnknownExtensionsDecode(strm);
}


void PASN_Sequence::Encode(PASN_Stream & strm) const
{
  PreambleEncode(strm);
  UnknownExtensionsEncode(strm);
}


BOOL PASN_Sequence::PreambleDecode(PASN_Stream & strm)
{
  return strm.SequencePreambleDecode(*this);
}


void PASN_Sequence::PreambleEncode(PASN_Stream & strm) const
{
  strm.SequencePreambleEncode(*this);
}


BOOL PASN_Sequence::KnownExtensionDecode(PASN_Stream & strm, PINDEX fld, PASN_Object & field)
{
  return strm.SequenceKnownDecode(*this, fld, field);
}


void PASN_Sequence::KnownExtensionEncode(PASN_Stream & strm, PINDEX fld, const PASN_Object & field) const
{
  strm.SequenceKnownEncode(*this, fld, field);
}


BOOL PASN_Sequence::UnknownExtensionsDecode(PASN_Stream & strm)
{
  return strm.SequenceUnknownDecode(*this);
}


void PASN_Sequence::UnknownExtensionsEncode(PASN_Stream & strm) const
{
  strm.SequenceUnknownEncode(*this);
}


///////////////////////////////////////////////////////////////////////

PASN_Set::PASN_Set(unsigned tag, TagClass tagClass,
                   unsigned nOpts, BOOL extend, unsigned nExtend)
  : PASN_Sequence(tag, tagClass, nOpts, extend, nExtend)
{
}


PObject * PASN_Set::Clone() const
{
  PAssert(IsClass(PASN_Set::Class()), PInvalidCast);
  return new PASN_Set(*this);
}


PString PASN_Set::GetTypeAsString() const
{
  return "Set";
}

///////////////////////////////////////////////////////////////////////

PASN_Array::PASN_Array(unsigned tag, TagClass tagClass)
  : PASN_ConstrainedObject(tag, tagClass)
{
}


PASN_Array::PASN_Array(const PASN_Array & other)
  : PASN_ConstrainedObject(other),
    array(other.array.GetSize())
{
  for (PINDEX i = 0; i < other.array.GetSize(); i++)
    array.SetAt(i, other.array[i].Clone());
}


PASN_Array & PASN_Array::operator=(const PASN_Array & other)
{
  PASN_ConstrainedObject::operator=(other);

  array.SetSize(other.array.GetSize());
  for (PINDEX i = 0; i < other.array.GetSize(); i++)
    array.SetAt(i, other.array[i].Clone());

  return *this;
}


BOOL PASN_Array::SetSize(PINDEX newSize)
{
  if (newSize > MaximumArraySize)
    return FALSE;

  PINDEX originalSize = array.GetSize();
  if (!array.SetSize(newSize))
    return FALSE;

  for (PINDEX i = originalSize; i < newSize; i++) {
    PASN_Object * obj = CreateObject();
    if (obj == NULL)
      return FALSE;

    array.SetAt(i, obj);
  }

  return TRUE;
}


PObject::Comparison PASN_Array::Compare(const PObject & obj) const
{
  PAssert(PIsDescendant(&obj, PASN_Array), PInvalidCast);
  const PASN_Array & other = (const PASN_Array &)obj;
  return array.Compare(other.array);
}


void PASN_Array::PrintOn(ostream & strm) const
{
  int indent = strm.precision() + 2;
  strm << array.GetSize() << " entries {\n";
  for (PINDEX i = 0; i < array.GetSize(); i++)
    strm << setw(indent+1) << "[" << i << "]=" << setprecision(indent) << array[i] << '\n';
  strm << setw(indent-1) << "}";
}


void PASN_Array::SetConstraintBounds(ConstraintType type, int lower, unsigned upper)
{
  if (lower < 0)
    return;

  PASN_ConstrainedObject::SetConstraintBounds(type, lower, upper);
  if (constraint != Unconstrained) {
    if (GetSize() < (PINDEX)lowerLimit)
      SetSize(lowerLimit);
    else if (GetSize() > (PINDEX)upperLimit)
      SetSize(upperLimit);
  }
}


PString PASN_Array::GetTypeAsString() const
{
  return "Array";
}


PINDEX PASN_Array::GetDataLength() const
{
  PINDEX len = 0;
  for (PINDEX i = 0; i < array.GetSize(); i++)
    len += array[i].GetObjectLength();
  return len;
}


BOOL PASN_Array::IsPrimitive() const
{
  return FALSE;
}


BOOL PASN_Array::Decode(PASN_Stream & strm)
{
  return strm.ArrayDecode(*this);
}


void PASN_Array::Encode(PASN_Stream & strm) const
{
  strm.ArrayEncode(*this);
}


///////////////////////////////////////////////////////////////////////

PASN_Stream::PASN_Stream()
{
  Construct();
}


PASN_Stream::PASN_Stream(const PBYTEArray & bytes)
  : PBYTEArray(bytes)
{
  Construct();
}


PASN_Stream::PASN_Stream(const BYTE * buf, PINDEX size)
  : PBYTEArray(buf, size)
{
  Construct();
}


void PASN_Stream::Construct()
{
  byteOffset = 0;
  bitOffset = 8;
}


void PASN_Stream::PrintOn(ostream & strm) const
{
  int indent = strm.precision() + 2;
  strm << " size=" << GetSize()
       << " pos=" << byteOffset << '.' << (8-bitOffset)
       << " {\n";
  PINDEX i = 0;
  while (i < GetSize()) {
    strm << setw(indent) << " " << hex << setfill('0');
    PINDEX j;
    for (j = 0; j < 16; j++)
      if (i+j < GetSize())
        strm << setw(2) << (unsigned)(BYTE)theArray[i+j] << ' ';
      else
        strm << "   ";
    strm << "  ";
    for (j = 0; j < 16; j++) {
      if (i+j < GetSize()) {
        BYTE c = theArray[i+j];
        if (c < 128 && isprint(c))
          strm << c;
        else
          strm << ' ';
      }
    }
    strm << dec << setfill(' ') << '\n';
    i += 16;
  }
  strm << setw(indent-1) << "}";
}


void PASN_Stream::SetPosition(PINDEX newPos)
{
  if (!CheckByteOffset(byteOffset))
    return;

  if (newPos > GetSize())
    byteOffset = GetSize();
  else
    byteOffset = newPos;
  bitOffset = 8;
}


void PASN_Stream::ResetDecoder()
{
  byteOffset = 0;
  bitOffset = 8;
}


void PASN_Stream::BeginEncoding()
{
  bitOffset = 8;
  byteOffset = 0;
  PBYTEArray::operator=(PBYTEArray(20));
}


void PASN_Stream::CompleteEncoding()
{
  if (byteOffset != P_MAX_INDEX) {
    if (bitOffset != 8) {
      bitOffset = 8;
      byteOffset++;
    }
    SetSize(byteOffset);
    byteOffset = P_MAX_INDEX;
  }
}


BYTE PASN_Stream::ByteDecode()
{
  if (!CheckByteOffset(byteOffset, GetSize()))
    return 0;

  bitOffset = 8;
  return theArray[byteOffset++];
}


void PASN_Stream::ByteEncode(unsigned value)
{
  if (!CheckByteOffset(byteOffset))
    return;

  if (bitOffset != 8) {
    bitOffset = 8;
    byteOffset++;
  }
  if (byteOffset >= GetSize())
    SetSize(byteOffset+10);
  theArray[byteOffset++] = (BYTE)value;
}


unsigned PASN_Stream::BlockDecode(BYTE * bufptr, unsigned nBytes)
{
  if (nBytes == 0 || bufptr == NULL || !CheckByteOffset(byteOffset+nBytes))
    return 0;

  ByteAlign();

  if (byteOffset+nBytes > (unsigned)GetSize()) {
    nBytes = GetSize() - byteOffset;
    if (nBytes <= 0)
      return 0;
  }

  memcpy(bufptr, &theArray[byteOffset], nBytes);
  byteOffset += nBytes;
  return nBytes;
}


void PASN_Stream::BlockEncode(const BYTE * bufptr, PINDEX nBytes)
{
  if (!CheckByteOffset(byteOffset, GetSize()))
    return;

  if (nBytes == 0)
    return;

  ByteAlign();

  if (byteOffset+nBytes >= GetSize())
    SetSize(byteOffset+nBytes+10);

  memcpy(theArray+byteOffset, bufptr, nBytes);
  byteOffset += nBytes;
}


void PASN_Stream::ByteAlign()
{
  if (!CheckByteOffset(byteOffset, GetSize()))
    return;

  if (bitOffset != 8) {
    bitOffset = 8;
    byteOffset++;
  }
}


///////////////////////////////////////////////////////////////////////

#ifdef  P_INCLUDE_PER
#include "asnper.cxx"
#endif

#ifdef  P_INCLUDE_BER
#include "asnber.cxx"
#endif

#ifdef  P_INCLUDE_XER
#include "asnxer.cxx"
#endif

// End of file ////////////////////////////////////////////////////////////////