mqtt5properties.cpp
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#include "mqtt5properties.h"
#include "cstring"
#include "exceptions.h"
Mqtt5PropertyBuilder::Mqtt5PropertyBuilder()
{
bites.reserve(128);
}
size_t Mqtt5PropertyBuilder::getLength() const
{
return length.getLen() + bites.size();
}
const VariableByteInt &Mqtt5PropertyBuilder::getVarInt() const
{
return length;
}
const std::vector<char> &Mqtt5PropertyBuilder::getBites() const
{
return bites;
}
void Mqtt5PropertyBuilder::writeSessionExpiry(uint32_t val)
{
writeUint32(Mqtt5Properties::SessionExpiryInterval, val);
}
void Mqtt5PropertyBuilder::writeReceiveMax(uint16_t val)
{
writeUint16(Mqtt5Properties::ReceiveMaximum, val);
}
void Mqtt5PropertyBuilder::writeRetainAvailable(uint8_t val)
{
writeUint8(Mqtt5Properties::RetainAvailable, val);
}
void Mqtt5PropertyBuilder::writeMaxPacketSize(uint32_t val)
{
writeUint32(Mqtt5Properties::MaximumPacketSize, val);
}
void Mqtt5PropertyBuilder::writeAssignedClientId(const std::string &clientid)
{
writeStr(Mqtt5Properties::AssignedClientIdentifier, clientid);
}
void Mqtt5PropertyBuilder::writeMaxTopicAliases(uint16_t val)
{
writeUint16(Mqtt5Properties::TopicAliasMaximum, val);
}
void Mqtt5PropertyBuilder::writeWildcardSubscriptionAvailable(uint8_t val)
{
writeUint8(Mqtt5Properties::WildcardSubscriptionAvailable, val);
}
void Mqtt5PropertyBuilder::writeSubscriptionIdentifiersAvailable(uint8_t val)
{
writeUint8(Mqtt5Properties::SubscriptionIdentifierAvailable, val);
}
void Mqtt5PropertyBuilder::writeSharedSubscriptionAvailable(uint8_t val)
{
writeUint8(Mqtt5Properties::SharedSubscriptionAvailable, val);
}
void Mqtt5PropertyBuilder::writeContentType(const std::string &format)
{
writeStr(Mqtt5Properties::ContentType, format);
}
void Mqtt5PropertyBuilder::writePayloadFormatIndicator(uint8_t val)
{
writeUint8(Mqtt5Properties::PayloadFormatIndicator, val);
}
void Mqtt5PropertyBuilder::writeMessageExpiryInterval(uint32_t val)
{
writeUint32(Mqtt5Properties::MessageExpiryInterval, val);
}
void Mqtt5PropertyBuilder::writeResponseTopic(const std::string &str)
{
writeStr(Mqtt5Properties::ResponseTopic, str);
}
void Mqtt5PropertyBuilder::writeUint32(Mqtt5Properties prop, const uint32_t x)
{
size_t pos = bites.size();
const size_t newSize = pos + 5;
bites.resize(newSize);
this->length = newSize;
const uint8_t a = static_cast<uint8_t>(x >> 24);
const uint8_t b = static_cast<uint8_t>(x >> 16);
const uint8_t c = static_cast<uint8_t>(x >> 8);
const uint8_t d = static_cast<uint8_t>(x);
bites[pos++] = static_cast<uint8_t>(prop);
bites[pos++] = a;
bites[pos++] = b;
bites[pos++] = c;
bites[pos] = d;
}
void Mqtt5PropertyBuilder::writeUint16(Mqtt5Properties prop, const uint16_t x)
{
size_t pos = bites.size();
const size_t newSize = pos + 3;
bites.resize(newSize);
this->length = newSize;
const uint8_t a = static_cast<uint8_t>(x >> 8);
const uint8_t b = static_cast<uint8_t>(x);
bites[pos++] = static_cast<uint8_t>(prop);
bites[pos++] = a;
bites[pos] = b;
}
void Mqtt5PropertyBuilder::writeUint8(Mqtt5Properties prop, const uint8_t x)
{
size_t pos = bites.size();
const size_t newSize = pos + 2;
bites.resize(newSize);
this->length = newSize;
bites[pos++] = static_cast<uint8_t>(prop);
bites[pos] = x;
}
void Mqtt5PropertyBuilder::writeStr(Mqtt5Properties prop, const std::string &str)
{
if (str.length() > 65535)
throw ProtocolError("String too long.");
const uint16_t strlen = str.length();
size_t pos = bites.size();
const size_t newSize = pos + strlen + 2;
bites.resize(newSize);
this->length = newSize;
const uint8_t a = static_cast<uint8_t>(strlen >> 8);
const uint8_t b = static_cast<uint8_t>(strlen);
bites[pos++] = static_cast<uint8_t>(prop);
bites[pos++] = a;
bites[pos++] = b;
std::memcpy(&bites[pos], str.c_str(), strlen);
}