asner.cxx

开源代码的pwlib的1.10.0版本,使用openh323的1.18.0版本毕备

{
  char buffer[256];
  for (unsigned i = firstChar; i < lastChar; i++)
    buffer[i] = (char)i;
  SetCharacterSet(buffer, lastChar - firstChar + 1, ctype);
}


void PASN_ConstrainedString::SetCharacterSet(const char * set, PINDEX setSize, ConstraintType ctype)
{
  if (ctype == Unconstrained) {
    characterSet.SetSize(canonicalSetSize);
    memcpy(characterSet.GetPointer(), canonicalSet, canonicalSetSize);
  }
  else if (setSize >= MaximumSetSize ||
           canonicalSetSize >= MaximumSetSize ||
           characterSet.GetSize() >= MaximumSetSize)
    return;
  else {
    characterSet.SetSize(setSize);
    PINDEX count = 0;
    for (PINDEX i = 0; i < canonicalSetSize; i++) {
      if (memchr(set, canonicalSet[i], setSize) != NULL)
        characterSet[count++] = canonicalSet[i];
    }
    if (count < 0)
      return;
    characterSet.SetSize(count);
  }

  charSetUnalignedBits = CountBits(characterSet.GetSize());

  charSetAlignedBits = 1;
  while (charSetUnalignedBits > charSetAlignedBits)
    charSetAlignedBits <<= 1;

  operator=((const char *)value);
}


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


void PASN_ConstrainedString::PrintOn(ostream & strm) const
{
  strm << value.ToLiteral();
}


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

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


PINDEX PASN_ConstrainedString::GetDataLength() const
{
  return value.GetSize()-1;
}


BOOL PASN_ConstrainedString::Decode(PASN_Stream & strm)
{
  return strm.ConstrainedStringDecode(*this);
}


void PASN_ConstrainedString::Encode(PASN_Stream & strm) const
{
  strm.ConstrainedStringEncode(*this);
}


#define DEFINE_STRING_CLASS(name, set) \
  static const char name##StringSet[] = set; \
  PASN_##name##String::PASN_##name##String(const char * str) \
    : PASN_ConstrainedString(name##StringSet, sizeof(name##StringSet)-1, \
                             Universal##name##String, UniversalTagClass) \
    { PASN_ConstrainedString::SetValue(str); } \
  PASN_##name##String::PASN_##name##String(unsigned tag, TagClass tagClass) \
    : PASN_ConstrainedString(name##StringSet, sizeof(name##StringSet)-1, tag, tagClass) \
    { } \
  PASN_##name##String & PASN_##name##String::operator=(const char * str) \
    { PASN_ConstrainedString::SetValue(str); return *this; } \
  PASN_##name##String & PASN_##name##String::operator=(const PString & str) \
    { PASN_ConstrainedString::SetValue(str); return *this; } \
  PObject * PASN_##name##String::Clone() const \
    { PAssert(IsClass(PASN_##name##String::Class()), PInvalidCast); \
      return new PASN_##name##String(*this); } \
  PString PASN_##name##String::GetTypeAsString() const \
    { return #name " String"; }

DEFINE_STRING_CLASS(Numeric,   " 0123456789")
DEFINE_STRING_CLASS(Printable, " '()+,-./0123456789:=?"
                               "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
                               "abcdefghijklmnopqrstuvwxyz")
DEFINE_STRING_CLASS(Visible,   " !\"#$%&'()*+,-./0123456789:;<=>?"
                               "@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_"
                               "`abcdefghijklmnopqrstuvwxyz{|}~")
DEFINE_STRING_CLASS(IA5,       "\000\001\002\003\004\005\006\007"
                               "\010\011\012\013\014\015\016\017"
                               "\020\021\022\023\024\025\026\027"
                               "\030\031\032\033\034\035\036\037"
                               " !\"#$%&'()*+,-./0123456789:;<=>?"
                               "@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_"
                               "`abcdefghijklmnopqrstuvwxyz{|}~\177")
DEFINE_STRING_CLASS(General,   "\000\001\002\003\004\005\006\007"
                               "\010\011\012\013\014\015\016\017"
                               "\020\021\022\023\024\025\026\027"
                               "\030\031\032\033\034\035\036\037"
                               " !\"#$%&'()*+,-./0123456789:;<=>?"
                               "@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_"
                               "`abcdefghijklmnopqrstuvwxyz{|}~\177"
                               "\200\201\202\203\204\205\206\207"
                               "\210\211\212\213\214\215\216\217"
                               "\220\221\222\223\224\225\226\227"
                               "\230\231\232\233\234\235\236\237"
                               "\240\241\242\243\244\245\246\247"
                               "\250\251\252\253\254\255\256\257"
                               "\260\261\262\263\264\265\266\267"
                               "\270\271\272\273\274\275\276\277"
                               "\300\301\302\303\304\305\306\307"
                               "\310\311\312\313\314\315\316\317"
                               "\320\321\322\323\324\325\326\327"
                               "\330\331\332\333\334\335\336\337"
                               "\340\341\342\343\344\345\346\347"
                               "\350\351\352\353\354\355\356\357"
                               "\360\361\362\363\364\365\366\367"
                               "\370\371\372\373\374\375\376\377")


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

PASN_BMPString::PASN_BMPString(const char * str)
  : PASN_ConstrainedObject(UniversalBMPString, UniversalTagClass)
{
  Construct();
  if (str != NULL)
    SetValue(str);
}


PASN_BMPString::PASN_BMPString(const PWORDArray & wstr)
  : PASN_ConstrainedObject(UniversalBMPString, UniversalTagClass)
{
  Construct();
  SetValue(wstr);
}


PASN_BMPString::PASN_BMPString(unsigned tag, TagClass tagClass)
  : PASN_ConstrainedObject(tag, tagClass)
{
  Construct();
}


void PASN_BMPString::Construct()
{
  firstChar = 0;
  lastChar = 0xffff;
  charSetAlignedBits = 16;
  charSetUnalignedBits = 16;
}


PASN_BMPString::PASN_BMPString(const PASN_BMPString & other)
  : PASN_ConstrainedObject(other),
    value(other.value, other.value.GetSize()),
    characterSet(other.characterSet)
{
  firstChar = other.firstChar;
  lastChar = other.lastChar;
  charSetAlignedBits = other.charSetAlignedBits;
  charSetUnalignedBits = other.charSetUnalignedBits;
}


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

  value = PWORDArray(other.value, other.value.GetSize());
  characterSet = other.characterSet;
  firstChar = other.firstChar;
  lastChar = other.lastChar;
  charSetAlignedBits = other.charSetAlignedBits;
  charSetUnalignedBits = other.charSetUnalignedBits;

  return *this;
}


BOOL PASN_BMPString::IsLegalCharacter(WORD ch)
{
  if (ch < firstChar)
    return FALSE;

  if (ch > lastChar)
    return FALSE;

  if (characterSet.IsEmpty())
    return TRUE;

  const WORD * wptr = characterSet;
  PINDEX count = characterSet.GetSize();
  while (count-- > 0) {
    if (*wptr == ch)
      return TRUE;
    wptr++;
  }

  return FALSE;
}


PASN_BMPString & PASN_BMPString::operator=(const PWORDArray & array)
{
  PINDEX paramSize = array.GetSize();

  // Can't copy any more than the upper constraint
  if ((unsigned)paramSize > upperLimit)
    paramSize = upperLimit;

  // Number of bytes must be at least lhe lower constraint
  PINDEX newSize = (int)paramSize < lowerLimit ? lowerLimit : paramSize;
  value.SetSize(newSize);

  PINDEX count = 0;
  for (PINDEX i = 0; i < paramSize; i++) {
    WORD c = array[i];
    if (IsLegalCharacter(c))
      value[count++] = c;
  }

  // Pad out with the first character till required size
  while (count < newSize)
    value[count++] = firstChar;

  return *this;
}


void PASN_BMPString::SetCharacterSet(ConstraintType ctype, const char * charSet)
{
  PWORDArray array(strlen(charSet));

  PINDEX count = 0;
  while (*charSet != '\0')
    array[count++] = (BYTE)*charSet++;

  SetCharacterSet(ctype, array);
}


void PASN_BMPString::SetCharacterSet(ConstraintType ctype, const PWORDArray & charSet)
{
  if (ctype == Unconstrained) {
    firstChar = 0;
    lastChar = 0xffff;
    characterSet.SetSize(0);
  }
  else {
    characterSet = charSet;

    charSetUnalignedBits = CountBits(lastChar - firstChar + 1);
    if (!charSet.IsEmpty()) {
      unsigned count = 0;
      for (PINDEX i = 0; i < charSet.GetSize(); i++) {
        if (characterSet[i] >= firstChar && characterSet[i] <= lastChar)
          count++;
      }
      count = CountBits(count);
      if (charSetUnalignedBits > count)
        charSetUnalignedBits = count;
    }

    charSetAlignedBits = 1;
    while (charSetUnalignedBits > charSetAlignedBits)
      charSetAlignedBits <<= 1;

    SetValue(value);
  }
}


void PASN_BMPString::SetCharacterSet(ConstraintType ctype, unsigned first, unsigned last)
{
  if (ctype != Unconstrained) {
    PAssert(first < 0x10000 && last < 0x10000 && last > first, PInvalidParameter);
    firstChar = (WORD)first;
    lastChar = (WORD)last;
  }
  SetCharacterSet(ctype, characterSet);
}


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


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


void PASN_BMPString::PrintOn(ostream & strm) const
{
  int indent = strm.precision() + 2;
  PINDEX sz = value.GetSize();
  strm << ' ' << sz << " characters {\n";
  PINDEX i = 0;
  while (i < sz) {
    strm << setw(indent) << " " << hex << setfill('0');
    PINDEX j;
    for (j = 0; j < 8; j++)
      if (i+j < sz)
        strm << setw(4) << value[i+j] << ' ';
      else
        strm << "     ";
    strm << "  ";
    for (j = 0; j < 8; j++) {
      if (i+j < sz) {
        WORD c = value[i+j];
        if (c < 128 && isprint(c))
          strm << (char)c;
        else
          strm << ' ';
      }
    }
    strm << dec << setfill(' ') << '\n';
    i += 8;
  }
  strm << setw(indent-1) << "}";
}


PString PASN_BMPString::GetTypeAsString() const
{
  return "BMP String";
}


PINDEX PASN_BMPString::GetDataLength() const
{
  return value.GetSize()*2;
}


BOOL PASN_BMPString::Decode(PASN_Stream & strm)
{
  return strm.BMPStringDecode(*this);
}


void PASN_BMPString::Encode(PASN_Stream & strm) const
{
  strm.BMPStringEncode(*this);
}


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

PASN_GeneralisedTime & PASN_GeneralisedTime::operator=(const PTime & time)
{
  value = time.AsString("yyyyMMddhhmmss.uz");
  value.Replace("GMT", "Z");
  return *this;
}


PTime PASN_GeneralisedTime::GetValue() const
{
  int year = value(0,3).AsInteger();
  int month = value(4,5).AsInteger();
  int day = value(6,7).AsInteger();
  int hour = value(8,9).AsInteger();
  int minute = value(10,11).AsInteger();
  int seconds = 0;
  int zonePos = 12;

  if (isdigit(value[12])) {
    seconds = value(12,13).AsInteger();
    if (value[14] != '.')
      zonePos = 14;
    else {
      zonePos = 15;
      while (isdigit(value[zonePos]))
        zonePos++;
    }
  }

  int zone = PTime::Local;
  switch (value[zonePos]) {
    case 'Z' :
      zone = PTime::UTC;
      break;
    case '+' :
    case '-' :
      zone = value(zonePos+1,zonePos+2).AsInteger()*60 +
             value(zonePos+3,zonePos+4).AsInteger();
  }

  return PTime(seconds, minute, hour, day, month, year, zone);
}


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

PASN_UniversalTime & PASN_UniversalTime::operator=(const PTime & time)
{
  value = time.AsString("yyMMddhhmmssz");
  value.Replace("GMT", "Z");
  value.MakeMinimumSize();
  return *this;
}


PTime PASN_UniversalTime::GetValue() const
{
  int year = value(0,1).AsInteger();
  if (year < 36)
    year += 2000;
  else
    year += 1900;

  int month = value(2,3).AsInteger();
  int day = value(4,5).AsInteger();
  int hour = value(6,7).AsInteger();
  int minute = value(8,9).AsInteger();
  int seconds = 0;
  int zonePos = 10;

  if (isdigit(value[10])) {
    seconds = value(10,11).AsInteger();
    zonePos = 12;
  }

  int zone = PTime::UTC;
  if (value[zonePos] != 'Z')
    zone = value(zonePos+1,zonePos+2).AsInteger()*60 +
           value(zonePos+3,zonePos+4).AsInteger();

  return PTime(seconds, minute, hour, day, month, year, zone);
}


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

PASN_Choice::PASN_Choice(unsigned nChoices, BOOL extend)
  : PASN_Object(0, ApplicationTagClass, extend),names(NULL),namesCount(0)
{
  numChoices = nChoices;
  choice = NULL;
}


PASN_Choice::PASN_Choice(unsigned tag, TagClass tagClass,
                         unsigned upper, BOOL extend)
  : PASN_Object(tag, tagClass, extend),names(NULL),namesCount(0)
{
  numChoices = upper;
  choice = NULL;
}


PASN_Choice::PASN_Choice(unsigned tag, TagClass tagClass,
                         unsigned upper, BOOL extend, const PASN_Names * nameSpec,unsigned namesCnt)
  : PASN_Object(tag, tagClass, extend),
    names(nameSpec),namesCount(namesCnt)
{
  numChoices = upper;
  choice = NULL;
}


PASN_Choice::PASN_Choice(const PASN_Choice & other)
  : PASN_Object(other),
  names(other.names),namesCount(other.namesCount)
{
  numChoices = other.numChoices;

  if (other.CheckCreate())
    choice = (PASN_Object *)other.choice->Clone();
  else
    choice = NULL;
}


PASN_Choice & PASN_Choice::operator=(const PASN_Choice & other)
{
  if (&other == this) // Assigning to ourself, just do nothing.
    return *this;

  delete choice;

  PASN_Object::operator=(other);

  numChoices = other.numChoices;
  names = other.names;