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A Small Class to Read INI File

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4.39/5 (40 votes)
27 Jun 2005CPOL 286.2K   41   75   50
A small class to read INI File, only has 4 methods: ReadInteger, ReadFloat, ReadBoolean, ReadString.

Introduction

I have written two classes CIniReader and CIniWriter. They are used to read and write .Ini files. They only have four methods, and are very simple and useful.

IniReader.h

C++
#ifndef INIREADER_H
#define INIREADER_H
class CIniReader
{
public:
 CIniReader(char* szFileName); 
 int ReadInteger(char* szSection, char* szKey, int iDefaultValue);
 float ReadFloat(char* szSection, char* szKey, float fltDefaultValue);
 bool ReadBoolean(char* szSection, char* szKey, bool bolDefaultValue);
 char* ReadString(char* szSection, char* szKey, const char* szDefaultValue);
private:
  char m_szFileName[255];
};
#endif//INIREADER_H

IniReader.cpp

C++
#include "IniReader.h"
#include <iostream>
#include <Windows.h>

CIniReader::CIniReader(char* szFileName)
{
 memset(m_szFileName, 0x00, 255);
 memcpy(m_szFileName, szFileName, strlen(szFileName));
}
int CIniReader::ReadInteger(char* szSection, char* szKey, int iDefaultValue)
{
 int iResult = GetPrivateProfileInt(szSection,  szKey, iDefaultValue, m_szFileName); 
 return iResult;
}
float CIniReader::ReadFloat(char* szSection, char* szKey, float fltDefaultValue)
{
 char szResult[255];
 char szDefault[255];
 float fltResult;
 sprintf(szDefault, "%f",fltDefaultValue);
 GetPrivateProfileString(szSection,  szKey, szDefault, szResult, 255, m_szFileName); 
 fltResult =  atof(szResult);
 return fltResult;
}
bool CIniReader::ReadBoolean(char* szSection, char* szKey, bool bolDefaultValue)
{
 char szResult[255];
 char szDefault[255];
 bool bolResult;
 sprintf(szDefault, "%s", bolDefaultValue? "True" : "False");
 GetPrivateProfileString(szSection, szKey, szDefault, szResult, 255, m_szFileName); 
 bolResult =  (strcmp(szResult, "True") == 0 || 
		strcmp(szResult, "true") == 0) ? true : false;
 return bolResult;
}
char* CIniReader::ReadString(char* szSection, char* szKey, const char* szDefaultValue)
{
 char* szResult = new char[255];
 memset(szResult, 0x00, 255);
 GetPrivateProfileString(szSection,  szKey, 
		szDefaultValue, szResult, 255, m_szFileName); 
 return szResult;
}

IniWriter.h

C++
#ifndef INIWRITER_H
#define INIWRITER_H
class CIniWriter
{
public:
 CIniWriter(char* szFileName); 
 void WriteInteger(char* szSection, char* szKey, int iValue);
 void WriteFloat(char* szSection, char* szKey, float fltValue);
 void WriteBoolean(char* szSection, char* szKey, bool bolValue);
 void WriteString(char* szSection, char* szKey, char* szValue);
private:
 char m_szFileName[255];
};
#endif //INIWRITER_H

IniWriter.cpp

C++
#include "IniWriter.h"
#include <iostream>
#include <Windows.h> 
CIniWriter::CIniWriter(char* szFileName)
{
 memset(m_szFileName, 0x00, 255);
 memcpy(m_szFileName, szFileName, strlen(szFileName));
}
void CIniWriter::WriteInteger(char* szSection, char* szKey, int iValue)
{
 char szValue[255];
 sprintf(szValue, "%d", iValue);
 WritePrivateProfileString(szSection,  szKey, szValue, m_szFileName); 
}
void CIniWriter::WriteFloat(char* szSection, char* szKey, float fltValue)
{
 char szValue[255];
 sprintf(szValue, "%f", fltValue);
 WritePrivateProfileString(szSection,  szKey, szValue, m_szFileName); 
}
void CIniWriter::WriteBoolean(char* szSection, char* szKey, bool bolValue)
{
 char szValue[255];
 sprintf(szValue, "%s", bolValue ? "True" : "False");
 WritePrivateProfileString(szSection,  szKey, szValue, m_szFileName); 
}
void CIniWriter::WriteString(char* szSection, char* szKey, char* szValue)
{
 WritePrivateProfileString(szSection,  szKey, szValue, m_szFileName);
}

Main.cpp

C++
#include "iostream"
#include "IniWriter.h"
#include "IniReader.h"
int main(int argc, char * argv[])
{
 CIniWriter iniWriter(".\\Logger.ini");
 iniWriter.WriteString("Setting", "Name", "jianxx");   
 iniWriter.WriteInteger("Setting", "Age", 27); 
 iniWriter.WriteFloat("Setting", "Height", 1.82f); 
 iniWriter.WriteBoolean("Setting", "Marriage", false);  
 CIniReader iniReader(".\\Logger.ini");
 char *szName = iniReader.ReadString("Setting", "Name", "");   
 int iAge = iniReader.ReadInteger("Setting", "Age", 25); 
 float fltHieght = iniReader.ReadFloat("Setting", "Height", 1.80f); 
 bool bMarriage = iniReader.ReadBoolean("Setting", "Marriage", true); 
 
 std::cout<<"Name:"<<szName<<std::endl
   <<"Age:"<<iAge<<std::endl 
   <<"Height:"<<fltHieght<<std::endl 
   <<"Marriage:"<<bMarriage<<std::endl; 
 delete szName;  
 return 1;   
}

History

  • 27th June, 2005: Initial post

License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


Written By
Web Developer
China China
My Name is Xiangxiong Jian ,I love Programming ,And I love the sharing code

Comments and Discussions

 
Questionini file is without [section] Pin
YSL24-Oct-23 19:50
YSL24-Oct-23 19:50 
Questioni get errors from this Pin
Ninja27130-Jul-18 14:25
Ninja27130-Jul-18 14:25 
GeneralMy vote of 2 Pin
raiserle10-Apr-16 1:48
raiserle10-Apr-16 1:48 
QuestionThanks, its really save my time Pin
vjletter7-Sep-15 13:27
vjletter7-Sep-15 13:27 
QuestionGood job, +5! Pin
Leo Chapiro2-Jun-15 22:34
professionalLeo Chapiro2-Jun-15 22:34 
Questionfixed memory leak problem Pin
smart_dummies25-Mar-14 22:13
smart_dummies25-Mar-14 22:13 
AnswerRe: fixed memory leak problem Pin
Member 1095594129-Jul-14 9:02
Member 1095594129-Jul-14 9:02 
GeneralRe: fixed memory leak problem Pin
stevehoang2-Dec-14 7:53
stevehoang2-Dec-14 7:53 
AnswerRe: fixed memory leak problem Pin
itechdev5-Jul-15 13:49
itechdev5-Jul-15 13:49 
GeneralRe: fixed memory leak problem Pin
Jaime Stuardo - Chile18-Dec-16 6:20
Jaime Stuardo - Chile18-Dec-16 6:20 
However, in demonstration it is written delete szName, which is not correct. The correct was what you posted, that is, delete[] szName.

This is not so programmer friendly. It is better to use sdt classes.
QuestionGreat piece of code Pin
John Connor28-Feb-14 17:09
John Connor28-Feb-14 17:09 
GeneralMy vote of 5 Pin
TomAndJary25-Apr-13 2:36
TomAndJary25-Apr-13 2:36 
GeneralShort and sweet. Pin
Functino29-Nov-12 14:31
Functino29-Nov-12 14:31 
Questionyes very good but how do I download? lol Pin
fran kener15-Sep-12 3:41
fran kener15-Sep-12 3:41 
GeneralMy vote of 5 Pin
satthutinhoc30-Jul-11 22:50
satthutinhoc30-Jul-11 22:50 
GeneralMy vote of 5 Pin
mikkojay15-Sep-10 10:40
mikkojay15-Sep-10 10:40 
QuestionKeep quotes? Pin
Imre S Lengyel29-Apr-10 17:53
professionalImre S Lengyel29-Apr-10 17:53 
GeneralAwesome! Pin
samaursa28-Nov-09 13:47
samaursa28-Nov-09 13:47 
GeneralRe: Awesome! Pin
samaursa28-Nov-09 13:49
samaursa28-Nov-09 13:49 
Questionwhy? Pin
Member 43037994-Nov-09 10:26
Member 43037994-Nov-09 10:26 
GeneralMy vote of 1 Pin
Jol1-Nov-09 16:20
professionalJol1-Nov-09 16:20 
GeneralCannot Convert from Char* to LPCWSTR Pin
r_programmer11-Aug-09 1:28
r_programmer11-Aug-09 1:28 
GeneralRe: Cannot Convert from Char* to LPCWSTR Pin
Blaz10-Sep-09 3:40
Blaz10-Sep-09 3:40 
GeneralRe: Cannot Convert from Char* to LPCWSTR Pin
BIGLY5-Oct-09 8:43
BIGLY5-Oct-09 8:43 
GeneralRe: Cannot Convert from Char* to LPCWSTR Pin
Kendrick Hang26-Aug-10 13:42
Kendrick Hang26-Aug-10 13:42 

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