C++ read write INI configuration file class instances

This article illustrates a C++ class that reads and writes INI configuration files. Share with you for your reference. The details are as follows:

1. Inireader.h file:

#ifndef INIREADER_H
#define INIREADER_H
#include <windows.h>
class CIniReader
{
public:
 CIniReader(LPCTSTR szFileName); 
 int ReadInteger(LPCTSTR szSection, LPCTSTR szKey, int iDefaultValue);
 float ReadFloat(LPCTSTR szSection, LPCTSTR szKey, float fltDefaultValue);
 bool ReadBoolean(LPCTSTR szSection, LPCTSTR szKey, bool bolDefaultValue);
 LPTSTR ReadString(LPCTSTR szSection, LPCTSTR szKey, LPCTSTR szDefaultValue);
private:
 TCHAR m_szFileName[255];
};
#endif //INIREADER_H

2. Inireader.cpp file:

#include "IniReader.h"
#include <iostream>
#include <windows.h>
CIniReader::CIniReader(LPCTSTR szFileName)
{
 memset(m_szFileName, 0x00, sizeof(m_szFileName));
 memcpy(m_szFileName, szFileName, _tcslen(szFileName)*sizeof(TCHAR));
}
int CIniReader::ReadInteger(LPCTSTR szSection, LPCTSTR szKey, int iDefaultValue)
{
 int iResult = GetPrivateProfileInt(szSection, szKey, iDefaultValue, m_szFileName); 
 return iResult;
}
float CIniReader::ReadFloat(LPCTSTR szSection, LPCTSTR szKey, float fltDefaultValue)
{
 TCHAR szResult[255];
 TCHAR szDefault[255];
 float fltResult;
 _stprintf_s(szDefault, 255, TEXT("%f"),fltDefaultValue);
 GetPrivateProfileString(szSection, szKey, szDefault, szResult, 255, m_szFileName); 
 fltResult = (float)_tstof(szResult);
 return fltResult;
}
bool CIniReader::ReadBoolean(LPCTSTR szSection, LPCTSTR szKey, bool bolDefaultValue)
{
 TCHAR szResult[255];
 TCHAR szDefault[255];
 bool bolResult;
 _stprintf_s(szDefault, 255, TEXT("%s"), bolDefaultValue? TEXT("True") : TEXT("False"));
 GetPrivateProfileString(szSection, szKey, szDefault, szResult, 255, m_szFileName); 
 bolResult = (_tcscmp(szResult, TEXT("True")) == 0 || 
    _tcscmp(szResult, TEXT("true")) == 0) ? true : false;
 return bolResult;
}
LPTSTR CIniReader::ReadString(LPCTSTR szSection, LPCTSTR szKey, LPCTSTR szDefaultValue)
{
 LPTSTR szResult = new TCHAR[255];
 memset(szResult, 0x00, sizeof(szResult));
 GetPrivateProfileString(szSection, szKey, szDefaultValue, szResult, 255, m_szFileName); 
 return szResult;
}

3. Iniwriter.h file:

#ifndef INIWRITER_H
#define INIWRITER_H
#include <windows.h>
class CIniWriter
{
public:
 CIniWriter(LPCTSTR szFileName); 
 void WriteInteger(LPCTSTR szSection, LPCTSTR szKey, int iValue);
 void WriteFloat(LPCTSTR szSection, LPCTSTR szKey, float fltValue);
 void WriteBoolean(LPCTSTR szSection, LPCTSTR szKey, bool bolValue);
 void WriteString(LPCTSTR szSection, LPCTSTR szKey, LPCTSTR szValue);
private:
 TCHAR m_szFileName[255];
};
#endif //INIWRITER_H

4. Iniwriter.cpp file:

#include "IniWriter.h"
#include <iostream>
#include <windows.h> 
CIniWriter::CIniWriter(LPCTSTR szFileName)
{
 memset(m_szFileName, 0x00, sizeof(m_szFileName));
 memcpy(m_szFileName, szFileName, _tcslen(szFileName)*sizeof(TCHAR));
}
void CIniWriter::WriteInteger(LPCTSTR szSection, LPCTSTR szKey, int iValue)
{
 TCHAR szValue[255];
 _stprintf_s(szValue, 255, TEXT("%d"), iValue);
 WritePrivateProfileString(szSection, szKey, szValue, m_szFileName); 
}
void CIniWriter::WriteFloat(LPCTSTR szSection, LPCTSTR szKey, float fltValue)
{
 TCHAR szValue[255];
 _stprintf_s(szValue, 255, TEXT("%f"), fltValue);
 WritePrivateProfileString(szSection, szKey, szValue, m_szFileName); 
}
void CIniWriter::WriteBoolean(LPCTSTR szSection, LPCTSTR szKey, bool bolValue)
{
 TCHAR szValue[255];
 _stprintf_s(szValue, 255, TEXT("%s"), bolValue ? TEXT("True") : TEXT("False"));
 WritePrivateProfileString(szSection, szKey, szValue, m_szFileName); 
}
void CIniWriter::WriteString(LPCTSTR szSection, LPCTSTR szKey, LPCTSTR szValue)
{
 WritePrivateProfileString(szSection, szKey, szValue, m_szFileName);
}

5. Main. CPP file:

#if defined(UNICODE) || defined(_UNICODE)
#define tcout std::wcout
#else
#define tcout std::cout
#endif
#include <iostream>
#include <windows.h>
#include "IniWriter.h"
#include "IniReader.h"
int _tmain(int argc, _TCHAR* argv[])
{
 CIniWriter iniWriter(TEXT(".\initest.ini"));
 iniWriter.WriteString(TEXT("Setting"), TEXT("Name"), TEXT("jianxx"));
 iniWriter.WriteInteger(TEXT("Setting"), TEXT("Age"), 27); 
 iniWriter.WriteFloat(TEXT("Setting"), TEXT("Height"), 1.82f); 
 iniWriter.WriteBoolean(TEXT("Setting"), TEXT("Marriage"), false); 
 CIniReader iniReader(TEXT(".\initest.ini"));
 LPTSTR szName = iniReader.ReadString(TEXT("Setting"), TEXT("Name"), TEXT(""));  
 int iAge = iniReader.ReadInteger(TEXT("Setting"), TEXT("Age"), 25); 
 float fltHieght = iniReader.ReadFloat(TEXT("Setting"), TEXT("Height"), 1.80f); 
 bool bMarriage = iniReader.ReadBoolean(TEXT("Setting"), TEXT("Marriage"), true); 
 tcout<<"Name:"<<szName<<std::endl
  <<"Age:"<<iAge<<std::endl 
  <<"Height:"<<fltHieght<<std::endl 
  <<"Marriage:"<<bMarriage<<std::endl; 
 delete szName; 
 return 1;  
}

Hope that the article described in the C++ programming to help you.