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lib/mstream.hpp
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241
lib/mstream.hpp
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#ifndef MSTREAM_HPP_
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#define MSTREAM_HPP_
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#include <stddef.h>
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#include <string>
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namespace tls
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{
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//------------------------------------------------------------------------------
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//To avoid writing the cursor position in the array at each step
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class MStream
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{
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private:
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char* m_data;
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unsigned short m_pos;
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bool m_owner;
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public:
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MStream(){ m_data=NULL; m_pos=0; m_owner=false;};
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MStream(char* data, unsigned short pos, bool owner){ m_data=data; m_pos=pos; m_owner=owner; };
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MStream(unsigned char* data, unsigned short pos, bool owner){ m_data=(char*)data; m_pos=pos; m_owner=owner; };
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~MStream(){ if(m_owner) delete m_data; };
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unsigned short getPos(){ return m_pos; };
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void setPos(unsigned short pos){ m_pos = pos; };
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char* getData(){ return m_data; };
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void setData(char* data){ m_data = data; };
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void setOwner(bool val){m_owner=val;};
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bool getOwner(bool val){ return m_owner;};
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bool write(char val){ *((char*)&m_data[m_pos]) = val; m_pos+=1; return true; };
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bool write(signed char val){ *((signed char*)&m_data[m_pos]) = val; m_pos+=1; return true; };
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bool write(unsigned char val){ *((unsigned char*)&m_data[m_pos]) = val; m_pos+=1; return true; };
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bool write(signed short int val){ *((signed short int*)&m_data[m_pos]) = val; m_pos+=2; return true; };
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bool write(unsigned short val){ *((unsigned short*)&m_data[m_pos]) = val; m_pos+=2; return true; };
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bool write(signed int val){ *((signed int*)&m_data[m_pos]) = val; m_pos+=4; return true; };
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bool write(unsigned int val){ *((unsigned int*)&m_data[m_pos]) = val; m_pos+=4; return true; };
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//Не С++ стиль а "big endian"
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bool writeR(char val){ *((char*)&m_data[m_pos]) = val; m_pos+=1; return true; };
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bool writeR(signed char val){ *((signed char*)&m_data[m_pos]) = val; m_pos+=1; return true; };
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bool writeR(unsigned char val){ *((unsigned char*)&m_data[m_pos]) = val; m_pos+=1; return true; };
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bool writeR(signed short int val){
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m_data[m_pos] = ((char*)&val)[0];
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m_data[m_pos+1] = ((char*)&val)[1];
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m_pos+=2;
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return true;
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};
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bool writeR(unsigned short val){
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m_data[m_pos] = ((char*)&val)[1];
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m_data[m_pos+1] = ((char*)&val)[0];
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m_pos+=2;
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return true;
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};
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bool writeR(signed int val)
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{
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m_data[m_pos] = ((char*)&val)[3];
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m_pos++;
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m_data[m_pos] = ((char*)&val)[2];
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m_pos++;
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m_data[m_pos] = ((char*)&val)[1];
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m_pos++;
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m_data[m_pos] = ((char*)&val)[0];
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m_pos++;
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return true;
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};
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bool writeR(unsigned int val)
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{
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m_data[m_pos] = ((char*)&val)[3];
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m_pos++;
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m_data[m_pos] = ((char*)&val)[2];
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m_pos++;
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m_data[m_pos] = ((char*)&val)[1];
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m_pos++;
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m_data[m_pos] = ((char*)&val)[0];
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m_pos++;
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return true;
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};
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bool write(char* val, int len){ for(int i=0;i<len;i++) { m_data[m_pos+i]=val[i];} m_pos+=len; return true; };
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bool write(const char* val, int len){ return write((char*)val,len); };
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bool write(std::string str){ return write((char*)str.c_str(),str.length()); };
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bool writeStrZZ(char* val){ int pos=0; while(true){ m_data[m_pos+pos]=val[pos]; if(val[pos]==0) break; pos++; } m_pos+=pos; return true; }; //Переписать строку с ноликом на конце
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bool writeStrZ(char* val){ int pos=0; while(true){ if(val[pos]==0) break; m_data[m_pos+pos]=val[pos]; pos++; } m_pos+=pos; return true; }; //Переписать строку без нолика на конце
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bool writeStr2r(std::string str) //Первых 2 байта под длину
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{
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if(str.length()>=65535) return false;
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unsigned short size=str.length();
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m_data[m_pos] = ((uint8_t*)&size)[1];
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m_pos++;
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m_data[m_pos] = ((uint8_t*)&size)[0];
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m_pos++;
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write(str.c_str(),str.length());
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return true;
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}//Для MQTT протокола (2 первых байта длина строки)
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std::string readStr2r() //Первых 2 байта под длину (Для MQTT протокола)
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{
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std::string result;
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unsigned short len;
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((uint8_t*)&len)[1] = m_data[m_pos];
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m_pos++;
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((uint8_t*)&len)[0] = m_data[m_pos];
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m_pos++;
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result.append((char *)&m_data[m_pos], len);
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m_pos+=len;
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return result;
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}
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unsigned char readUInt1()
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{
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unsigned char result=m_data[m_pos];
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m_pos++;
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return result;
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};
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char readInt1(){ char result=m_data[m_pos]; m_pos+=1; return result; };
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unsigned short readUInt2() { unsigned short result=*((unsigned short*)&m_data[m_pos]); m_pos+=2; return result; };
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short readInt2() { short result=*((short*)&m_data[m_pos]); m_pos+=2; return result; };
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short readInt2R() //Байты в обратном порядке
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{
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short result;
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result = *((unsigned char*)&m_data[m_pos]);
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result = result << 8;
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result = result | *((unsigned char*)&m_data[m_pos+1]);
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m_pos+=2;
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return result;
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};
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unsigned short readUInt2R() //Байты в обратном порядке (big endian)
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{
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unsigned short result;
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result = *((unsigned char*)&m_data[m_pos]);
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result = result << 8;
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result = result | *((unsigned char*)&m_data[m_pos+1]);
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m_pos+=2;
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return result;
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};
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unsigned int readUInt3() //Читаем 3 байта
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{
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unsigned int result = 0;
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((unsigned char*)&result)[0] = m_data[m_pos];
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((unsigned char*)&result)[1] = m_data[m_pos+1];
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((unsigned char*)&result)[2] = m_data[m_pos+2];
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m_pos+=3;
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return result;
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}
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unsigned int readUInt3R() //Читаем 3 байта
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{
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unsigned int result = 0;
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((unsigned char*)&result)[0] = m_data[m_pos+2];
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((unsigned char*)&result)[1] = m_data[m_pos+1];
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((unsigned char*)&result)[2] = m_data[m_pos];
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m_pos+=3;
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return result;
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}
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unsigned int readUInt4() { unsigned int result=*((unsigned int*)&m_data[m_pos]); m_pos+=4; return result; };
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unsigned int readUInt4R() // Байты в обратном порядке
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{
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unsigned int result;
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result = *((unsigned char*)&m_data[m_pos]);
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result = result << 8;
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result = result | *((unsigned char*)&m_data[m_pos+1]);
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result = result << 8;
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result = result | *((unsigned char*)&m_data[m_pos+2]);
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result = result << 8;
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result = result | *((unsigned char*)&m_data[m_pos+3]);
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m_pos+=4;
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return result;
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};
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int readInt4() { int result=*((int*)&m_data[m_pos]); m_pos+=4; return result; };
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unsigned long long readUInt7()
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{
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char buf[8]={0,0,0,0,0,0,0,0};
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for(int ch=0;ch<7;ch++)
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buf[ch]=m_data[m_pos+ch];
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unsigned long long result=*((unsigned long long*)buf);
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m_pos+=7;
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return result;
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};
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unsigned long long readUInt7R() //014135835392AB = 353173069075115
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{
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char buf[8]={0,0,0,0,0,0,0,0};
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for(int ch=0;ch<7;ch++)
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{
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buf[ch]=m_data[m_pos+6-ch];
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}
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unsigned long long result=*((unsigned long long*)buf);
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m_pos+=7;
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return result;
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};
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unsigned long long readUInt8() { unsigned long long result=*((unsigned long long*)&m_data[m_pos]); m_pos+=8; return result; };
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unsigned long long readUInt8R()
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{
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unsigned long long result;
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result = *((unsigned char*)&m_data[m_pos]);
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result = result << 8;
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result = result | *((unsigned char*)&m_data[m_pos+1]);
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result = result << 8;
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result = result | *((unsigned char*)&m_data[m_pos+2]);
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result = result << 8;
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result = result | *((unsigned char*)&m_data[m_pos+3]);
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result = result << 8;
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result = result | *((unsigned char*)&m_data[m_pos+4]);
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result = result << 8;
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result = result | *((unsigned char*)&m_data[m_pos+5]);
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result = result << 8;
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result = result | *((unsigned char*)&m_data[m_pos+6]);
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result = result << 8;
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result = result | *((unsigned char*)&m_data[m_pos+7]);
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m_pos+=8;
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return result;
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};
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bool Read(void* val, int len)
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{
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for(int i=0;i<len;i++)
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{
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((char*)val)[i]=m_data[m_pos];
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m_pos+=1;
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}
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return true;
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};
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std::string readString(int len){
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std::string result;
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if(len>0)
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{
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result.assign(&m_data[m_pos], len);
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m_pos+=len;
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}
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return result;
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}
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};
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}
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#endif //MSTREAM_HPP_
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