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#include "lib/xdr.h"
void XDRWriter::put(uint32_t number)
{
*buffer++ = ((number >> 24) & 0xffU);
*buffer++ = ((number >> 16) & 0xffU);
*buffer++ = ((number >> 8) & 0xffU);
*buffer++ = (number & 0xffU);
pos += 4;
}
void XDRWriter::put(int32_t number)
{
*buffer++ = ((number >> 24) & 0xffU);
*buffer++ = ((number >> 16) & 0xffU);
*buffer++ = ((number >> 8) & 0xffU);
*buffer++ = (number & 0xffU);
pos += 4;
}
void XDRWriter::put(uint64_t number)
{
*buffer++ = ((number >> 56) & 0xffU);
*buffer++ = ((number >> 48) & 0xffU);
*buffer++ = ((number >> 40) & 0xffU);
*buffer++ = ((number >> 32) & 0xffU);
*buffer++ = ((number >> 24) & 0xffU);
*buffer++ = ((number >> 16) & 0xffU);
*buffer++ = ((number >> 8) & 0xffU);
*buffer++ = (number & 0xffU);
pos += 8;
}
void XDRWriter::put(int64_t number)
{
*buffer++ = ((number >> 56) & 0xffU);
*buffer++ = ((number >> 48) & 0xffU);
*buffer++ = ((number >> 40) & 0xffU);
*buffer++ = ((number >> 32) & 0xffU);
*buffer++ = ((number >> 24) & 0xffU);
*buffer++ = ((number >> 16) & 0xffU);
*buffer++ = ((number >> 8) & 0xffU);
*buffer++ = (number & 0xffU);
pos += 8;
}
void XDRWriter::put(float number)
{
union {
uint32_t i;
float f;
} v;
// Setting one member of a struct and then reading another is undefined
// behaviour, but works as intended in nearly any (embedded) compiler
v.f = number;
put(v.i);
}
void XDRWriter::put(double number)
{
union {
uint64_t i;
double d;
} v;
// Setting one member of a struct and then reading another is undefined
// behaviour, but works as intended in nearly any (embedded) compiler
v.d = number;
put(v.i);
}
void XDRWriter::put(char const *data)
{
if (!is_fixed_length)
{
put(next_array_len);
}
uint32_t i;
for (i = 0; i < next_array_len; i++)
{
*buffer++ = data[i];
}
while ((i++) % 4 != 0)
{
*buffer++ = 0;
}
pos += i - 1;
}
template <uint32_t TSize>
void XDRWriter::put(char const (&data)[TSize])
{
if (!is_fixed_length)
{
put(TSize);
}
uint32_t i;
for (i = 0; i < TSize; i++)
{
*buffer++ = data[i];
}
while ((i++) % 4 != 0)
{
*buffer++ = 0;
}
pos += i - 1;
}
uint32_t XDRReader::get_uint32()
{
uint32_t ret = (((uint32_t)data[pos] & 0xffU) << 24) | (((uint32_t)data[pos + 1] & 0xffU) << 16) | (((uint32_t)data[pos + 2] & 0xffU) << 8) | ((uint32_t)data[pos + 3] & 0xffU);
pos += 4;
return ret;
}
int32_t XDRReader::get_int32()
{
int32_t ret = (((int32_t)data[pos] & 0xff) << 24) | (((int32_t)data[pos + 1] & 0xff) << 16) | (((int32_t)data[pos + 2] & 0xff) << 8) | ((int32_t)data[pos + 3] & 0xff);
pos += 4;
return ret;
}
uint64_t XDRReader::get_uint64()
{
uint64_t ret = (((uint64_t)data[pos] & 0xffU) << 56) | (((uint64_t)data[pos + 1] & 0xffU) << 48) | (((uint64_t)data[pos + 2] & 0xffU) << 40) | (((uint64_t)data[pos + 3] & 0xffU) << 32) | (((uint64_t)data[pos + 4] & 0xffU) << 24) | (((uint64_t)data[pos + 5] & 0xffU) << 16) | (((uint64_t)data[pos + 6] & 0xffU) << 8) | ((uint64_t)data[pos + 7] & 0xffU);
return ret;
}
int64_t XDRReader::get_int64()
{
int64_t ret = (((int64_t)data[pos] & 0xff) << 56) | (((int64_t)data[pos + 1] & 0xff) << 48) | (((int64_t)data[pos + 2] & 0xff) << 40) | (((int64_t)data[pos + 3] & 0xff) << 32) | (((int64_t)data[pos + 4] & 0xff) << 24) | (((int64_t)data[pos + 5] & 0xff) << 16) | (((int64_t)data[pos + 6] & 0xff) << 8) | ((int64_t)data[pos + 7] & 0xff);
return ret;
}
float XDRReader::get_float()
{
union {
uint32_t i;
float f;
} v;
// Setting one member of a struct and then reading another is undefined
// behaviour, but works as intended in nearly any (embedded) compiler
v.i = get_uint32();
return v.f;
}
double XDRReader::get_double()
{
union {
uint64_t i;
double d;
} v;
// Setting one member of a struct and then reading another is undefined
// behaviour, but works as intended in nearly any (embedded) compiler
v.i = get_uint64();
return v.d;
}
uint32_t XDRReader::get_opaque_length()
{
return get_uint32();
}
char *XDRReader::get_opaque(uint32_t length)
{
char *ret = data + pos;
pos += length;
if (length % 4)
{
pos += 4 - (length % 4);
}
return ret;
}
void XDRReader::get_string(char *target)
{
uint16_t length = get_opaque_length();
uint16_t i;
for (i = 0; i < length; i++)
{
target[i] = data[pos + i];
}
target[i] = 0;
pos += length;
if (length % 4)
{
pos += 4 - (length % 4);
}
}
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