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/*
* Copyright 2020 Birte Kristina Friesel
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "object/xdrinput.h"
uint32_t XDRInput::get_uint32()
{
uint32_t ret = ((uint8_t)data[pos]<<24) | ((uint8_t)data[pos+1]<<16)
| ((uint8_t)data[pos+2]<<8) | (uint8_t)data[pos+3];
pos += 4;
return ret;
}
int32_t XDRInput::get_int32()
{
int32_t ret = (data[pos]<<24) | (data[pos+1]<<16) | (data[pos+2]<<8) | data[pos+3];
pos += 4;
return ret;
}
uint64_t XDRInput::get_uint64()
{
uint64_t ret0 = ((uint8_t)data[pos]<<24) | ((uint8_t)data[pos+1]<<16)
| ((uint8_t)data[pos+2]<<8) | (uint8_t)data[pos+3];
pos += 4;
uint64_t ret1 = ((uint8_t)data[pos]<<24) | ((uint8_t)data[pos+1]<<16)
| ((uint8_t)data[pos+2]<<8) | (uint8_t)data[pos+3];
pos += 4;
return (ret0 << 32) | ret1;
}
int64_t XDRInput::get_int64()
{
int64_t ret0 = (data[pos]<<24) | (data[pos+1]<<16) | (data[pos+2]<<8) | data[pos+3];
pos += 4;
int64_t ret1 = (data[pos]<<24) | (data[pos+1]<<16) | (data[pos+2]<<8) | data[pos+3];
pos += 4;
return (ret0 << 32) | ret1;
}
float XDRInput::get_float()
{
union {
uint32_t i;
float f;
} v;
// Setting one member of a union and then reading another is undefined
// behaviour, but works as intended in nearly any (embedded) compiler
v.i = get_uint32();
return v.f;
}
double XDRInput::get_double()
{
union {
uint64_t i;
double d;
} v;
// Setting one member of a union 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 XDRInput::get_opaque_length()
{
return get_uint32();
}
char *XDRInput::get_opaque(uint32_t length)
{
char *ret = data + pos;
pos += length;
if (length % 4) {
pos += 4 - (length % 4);
}
return ret;
}
void XDRInput::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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