ostream.cpp

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#include "yaml-cpp-pm/ostream.h"
#include <cstring>
 
namespace YAML_PM
{
        ostream::ostream(): m_buffer(0), m_pos(0), m_size(0), m_row(0), m_col(0)
        {
                reserve(1024);
        }
        
        ostream::~ostream()
        {
                delete [] m_buffer;
        }
        
        void ostream::reserve(unsigned size)
        {
                if(size <= m_size)
                        return;
                
                char *newBuffer = new char[size];
                std::memset(newBuffer, 0, size * sizeof(char));
                std::memcpy(newBuffer, m_buffer, m_size * sizeof(char));
                delete [] m_buffer;
                m_buffer = newBuffer;
                m_size = size;
        }
        
        void ostream::put(char ch)
        {
                if(m_pos >= m_size - 1)   // an extra space for the NULL terminator
                        reserve(m_size * 2);
                
                m_buffer[m_pos] = ch;
                m_pos++;
                
                if(ch == '\n') {
                        m_row++;
                        m_col = 0;
                } else
                        m_col++;
        }
 
        ostream& operator << (ostream& out, const char *str)
        {
                std::size_t length = std::strlen(str);
                for(std::size_t i=0;i<length;i++)
                        out.put(str[i]);
                return out;
        }
        
        ostream& operator << (ostream& out, const std::string& str)
        {
                out << str.c_str();
                return out;
        }
        
        ostream& operator << (ostream& out, char ch)
        {
                out.put(ch);
                return out;
        }
}