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streamReader.I
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359 lines (331 loc) · 12.3 KB
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// Filename: streamReader.I
// Created by: drose (04Aug02)
//
////////////////////////////////////////////////////////////////////
//
// PANDA 3D SOFTWARE
// Copyright (c) Carnegie Mellon University. All rights reserved.
//
// All use of this software is subject to the terms of the revised BSD
// license. You should have received a copy of this license along
// with this source code in a file named "LICENSE."
//
////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////
// Function: StreamReader::Constructor
// Access: Public
// Description:
////////////////////////////////////////////////////////////////////
INLINE StreamReader::
StreamReader(istream &in) :
_in(&in),
_owns_stream(false)
{
}
////////////////////////////////////////////////////////////////////
// Function: StreamReader::Constructor
// Access: Published
// Description: If owns_stream is true, the stream pointer will be
// deleted when the StreamReader destructs.
////////////////////////////////////////////////////////////////////
INLINE StreamReader::
StreamReader(istream *in, bool owns_stream) :
_in(in),
_owns_stream(owns_stream)
{
}
////////////////////////////////////////////////////////////////////
// Function: StreamReader::Copy Constructor
// Access: Published
// Description: The copy constructor does not copy ownership of the
// stream.
////////////////////////////////////////////////////////////////////
INLINE StreamReader::
StreamReader(const StreamReader ©) :
_in(copy._in),
_owns_stream(false)
{
}
////////////////////////////////////////////////////////////////////
// Function: StreamReader::Copy Assignment Operator
// Access: Published
// Description: The copy constructor does not copy ownership of the
// stream.
////////////////////////////////////////////////////////////////////
INLINE void StreamReader::
operator = (const StreamReader ©) {
if (_owns_stream) {
delete _in;
}
_in = copy._in;
_owns_stream = false;
}
////////////////////////////////////////////////////////////////////
// Function: StreamReader::Destructor
// Access: Published
// Description:
////////////////////////////////////////////////////////////////////
INLINE StreamReader::
~StreamReader() {
if (_owns_stream) {
delete _in;
}
}
////////////////////////////////////////////////////////////////////
// Function: StreamReader::get_istream
// Access: Published
// Description: Returns the stream in use.
////////////////////////////////////////////////////////////////////
INLINE istream *StreamReader::
get_istream() const {
return _in;
}
////////////////////////////////////////////////////////////////////
// Function: StreamReader::get_bool
// Access: Published
// Description: Extracts a boolean value.
////////////////////////////////////////////////////////////////////
INLINE bool StreamReader::
get_bool() {
return (get_uint8() != 0);
}
////////////////////////////////////////////////////////////////////
// Function: StreamReader::get_int8
// Access: Published
// Description: Extracts a signed 8-bit integer.
////////////////////////////////////////////////////////////////////
INLINE PN_int8 StreamReader::
get_int8() {
return (PN_int8)_in->get();
}
////////////////////////////////////////////////////////////////////
// Function: StreamReader::get_uint8
// Access: Published
// Description: Extracts an unsigned 8-bit integer.
////////////////////////////////////////////////////////////////////
INLINE PN_uint8 StreamReader::
get_uint8() {
return (PN_uint8)_in->get();
}
////////////////////////////////////////////////////////////////////
// Function: StreamReader::get_int16
// Access: Published
// Description: Extracts a signed 16-bit integer.
////////////////////////////////////////////////////////////////////
INLINE PN_int16 StreamReader::
get_int16() {
PN_int16 readval, retval;
_in->read((char *)&readval, sizeof(readval));
LittleEndian s(&readval, 0, sizeof(readval));
s.store_value(&retval, sizeof(retval));
return retval;
}
////////////////////////////////////////////////////////////////////
// Function: StreamReader::get_int32
// Access: Published
// Description: Extracts a signed 32-bit integer.
////////////////////////////////////////////////////////////////////
INLINE PN_int32 StreamReader::
get_int32() {
PN_int32 readval, retval;
_in->read((char *)&readval, sizeof(readval));
LittleEndian s(&readval, 0, sizeof(readval));
s.store_value(&retval, sizeof(retval));
return retval;
}
////////////////////////////////////////////////////////////////////
// Function: StreamReader::get_int64
// Access: Published
// Description: Extracts a signed 64-bit integer.
////////////////////////////////////////////////////////////////////
INLINE PN_int64 StreamReader::
get_int64() {
PN_int64 readval, retval;
_in->read((char *)&readval, sizeof(readval));
LittleEndian s(&readval, 0, sizeof(readval));
s.store_value(&retval, sizeof(retval));
return retval;
}
////////////////////////////////////////////////////////////////////
// Function: StreamReader::get_uint16
// Access: Published
// Description: Extracts an unsigned 16-bit integer.
////////////////////////////////////////////////////////////////////
INLINE PN_uint16 StreamReader::
get_uint16() {
PN_uint16 readval, retval;
_in->read((char *)&readval, sizeof(readval));
LittleEndian s(&readval, 0, sizeof(readval));
s.store_value(&retval, sizeof(retval));
return retval;
}
////////////////////////////////////////////////////////////////////
// Function: StreamReader::get_uint32
// Access: Published
// Description: Extracts an unsigned 32-bit integer.
////////////////////////////////////////////////////////////////////
INLINE PN_uint32 StreamReader::
get_uint32() {
PN_uint32 readval, retval;
_in->read((char *)&readval, sizeof(readval));
LittleEndian s(&readval, 0, sizeof(readval));
s.store_value(&retval, sizeof(retval));
return retval;
}
////////////////////////////////////////////////////////////////////
// Function: StreamReader::get_uint64
// Access: Published
// Description: Extracts an unsigned 64-bit integer.
////////////////////////////////////////////////////////////////////
INLINE PN_uint64 StreamReader::
get_uint64() {
PN_uint64 readval, retval;
_in->read((char *)&readval, sizeof(readval));
LittleEndian s(&readval, 0, sizeof(readval));
s.store_value(&retval, sizeof(retval));
return retval;
}
////////////////////////////////////////////////////////////////////
// Function: StreamReader::get_float32
// Access: Published
// Description: Extracts a 32-bit single-precision floating-point
// number. Since this kind of float is not necessarily
// portable across different architectures, special care
// is required.
////////////////////////////////////////////////////////////////////
INLINE float StreamReader::
get_float32() {
// For now, we assume the float format is portable across all
// architectures we are concerned with. If we come across one that
// is different, we will have to convert.
nassertr(sizeof(float) == 4, 0.0f);
float readval, retval;
_in->read((char *)&readval, sizeof(readval));
LittleEndian s(&readval, 0, sizeof(readval));
s.store_value(&retval, sizeof(retval));
return retval;
}
////////////////////////////////////////////////////////////////////
// Function: StreamReader::get_float64
// Access: Published
// Description: Extracts a 64-bit floating-point number.
////////////////////////////////////////////////////////////////////
INLINE PN_float64 StreamReader::
get_float64() {
PN_float64 readval, retval;
_in->read((char *)&readval, sizeof(readval));
LittleEndian s(&readval, 0, sizeof(readval));
s.store_value(&retval, sizeof(retval));
return retval;
}
////////////////////////////////////////////////////////////////////
// Function: StreamReader::get_be_int16
// Access: Published
// Description: Extracts a signed big-endian 16-bit integer.
////////////////////////////////////////////////////////////////////
INLINE PN_int16 StreamReader::
get_be_int16() {
PN_int16 readval, retval;
_in->read((char *)&readval, sizeof(readval));
BigEndian s(&readval, 0, sizeof(readval));
s.store_value(&retval, sizeof(retval));
return retval;
}
////////////////////////////////////////////////////////////////////
// Function: StreamReader::get_be_int32
// Access: Published
// Description: Extracts a signed big-endian 32-bit integer.
////////////////////////////////////////////////////////////////////
INLINE PN_int32 StreamReader::
get_be_int32() {
PN_int32 readval, retval;
_in->read((char *)&readval, sizeof(readval));
BigEndian s(&readval, 0, sizeof(readval));
s.store_value(&retval, sizeof(retval));
return retval;
}
////////////////////////////////////////////////////////////////////
// Function: StreamReader::get_be_int64
// Access: Published
// Description: Extracts a signed big-endian 64-bit integer.
////////////////////////////////////////////////////////////////////
INLINE PN_int64 StreamReader::
get_be_int64() {
PN_int64 readval, retval;
_in->read((char *)&readval, sizeof(readval));
BigEndian s(&readval, 0, sizeof(readval));
s.store_value(&retval, sizeof(retval));
return retval;
}
////////////////////////////////////////////////////////////////////
// Function: StreamReader::get_be_uint16
// Access: Published
// Description: Extracts an unsigned big-endian 16-bit integer.
////////////////////////////////////////////////////////////////////
INLINE PN_uint16 StreamReader::
get_be_uint16() {
PN_uint16 readval, retval;
_in->read((char *)&readval, sizeof(readval));
BigEndian s(&readval, 0, sizeof(readval));
s.store_value(&retval, sizeof(retval));
return retval;
}
////////////////////////////////////////////////////////////////////
// Function: StreamReader::get_be_uint32
// Access: Published
// Description: Extracts an unsigned big-endian 32-bit integer.
////////////////////////////////////////////////////////////////////
INLINE PN_uint32 StreamReader::
get_be_uint32() {
PN_uint32 readval, retval;
_in->read((char *)&readval, sizeof(readval));
BigEndian s(&readval, 0, sizeof(readval));
s.store_value(&retval, sizeof(retval));
return retval;
}
////////////////////////////////////////////////////////////////////
// Function: StreamReader::get_be_uint64
// Access: Published
// Description: Extracts an unsigned big-endian 64-bit integer.
////////////////////////////////////////////////////////////////////
INLINE PN_uint64 StreamReader::
get_be_uint64() {
PN_uint64 readval, retval;
_in->read((char *)&readval, sizeof(readval));
BigEndian s(&readval, 0, sizeof(readval));
s.store_value(&retval, sizeof(retval));
return retval;
}
////////////////////////////////////////////////////////////////////
// Function: StreamReader::get_be_float32
// Access: Published
// Description: Extracts a 32-bit single-precision big-endian
// floating-point number. Since this kind of float is
// not necessarily portable across different
// architectures, special care is required.
////////////////////////////////////////////////////////////////////
INLINE float StreamReader::
get_be_float32() {
// For now, we assume the float format is portable across all
// architectures we are concerned with. If we come across one that
// is different, we will have to convert.
nassertr(sizeof(float) == 4, 0.0f);
float readval, retval;
_in->read((char *)&readval, sizeof(readval));
BigEndian s(&readval, 0, sizeof(readval));
s.store_value(&retval, sizeof(retval));
return retval;
}
////////////////////////////////////////////////////////////////////
// Function: StreamReader::get_be_float64
// Access: Published
// Description: Extracts a 64-bit big-endian floating-point number.
////////////////////////////////////////////////////////////////////
INLINE PN_float64 StreamReader::
get_be_float64() {
PN_float64 readval, retval;
_in->read((char *)&readval, sizeof(readval));
BigEndian s(&readval, 0, sizeof(readval));
s.store_value(&retval, sizeof(retval));
return retval;
}