ini文件纯C++读写代码

        前一段时间，一直有朋友在向我索要EVC版本的ini读取函数，由于是公司其他人完成的代码，我不便于公布，正好这段时间重新拾起了成都英创公司的NetBox / NetBoxII相关开发工作，它的系统平台为DOS，开发平台BC3.0。它提供的一个ini读写的代码，我用了一下，非常好使，好东西就要共享，这里我想成都英创公司也不会反对，毕竟我给他也做了一个小小的宣传（我们公司的隧道广告早期的通信子站就是NetBoxII所开发，目前为Moxa公司的通信设备）。:-)
ini读写头文件源码：
////////////////////////////////////////////////////////////////
//                                  //
//         Configure file Reader for VATL Version2.0          //
//                                                            //
//                  Author: Wang.Ping                         //
//                                                            //
//                       Ver 1.42                             //
//                                                            //
//                    Date: 18/08/99                          //
//                                                  //
//        (c)Copyright V.A.T.L Development Workgroup          //
//                                                            //
//         !Read Max Line Length = 2048                 //
// ---------------------------------------------------------- //
//   Funciton:                                                //
//                                                            //
//   char *GetStrTitle( char *Str, char *Compstr );
//   int  Get1Par(int Num, char  *Par, char *ParStr);         //
//   int  Get1Par(int Num, long  *Par, char *ParStr);         //
//   int  Get1Par(int Num, int   *Par, char *ParStr);         //
//   int  Get1Par(int Num, float *Par, char *ParStr);         //
//   int  Get1Par(int Num, unsigned int *Par, char *ParStr);  //
//                                                            //
//   int GetField( char *FileName, char *Group, char *Item,   //
//                 char *OutStr );                            //
//   int GetField( char *FileName, char *Group, char *Item,   //
//                 int Postion, char *OutStr );               //
//   int GetField( char *FileName, char *Group, char *Item,   //
//           int Postion, int  &OutStr );               //
//   int GetField( char *FileName, char *Group, char *Item,   //
//           int Postion, float &OutStr );              //
//   int GetField( char *FileName, char *Group, char *Item,   //
//           int Postion, long &OutStr );               //
//   int GetField( char *FileName, char *Group, char *Item,   //
//           int Postion, unsigned long &OutStr );      //
//                                                            //
//   int WriteField( char *FileName, char *Group, char *Item, //
//           char *OutStr, int Mode=NEW );              //
//   int WriteField( char *FileName, char *Group, char *Item, //
//           int  &OutStr, int Mode=NEW );              //
//   int WriteField( char *FileName, char *Group, char *Item, //
//           float &OutStr, int Mode=NEW );             //
//   int WriteField( char *FileName, char *Group, char *Item, //
//           long  &OutStr, int Mode=NEW );             //
//   int WriteField( char *FileName, char *Group, char *Item, //
//           unsigned long  &OutStr, int Mode=NEW );    //
//                                                            //
//   int CreatGroupName( char *FileName, char *Group );       //
//   int ModifyGroupName( char *FileName, char *Group,        //
//                 char *NewGroup, int Mode=NEW );            //
//                                                            //
//   int DeleteGroup( char *FileName, char *Group );          //
//   int DeleteField( char *FileName, char *Group,            //
//           char *Item );                              //
//                                                            //
//   int FindGroupName( char *FileName, char *Group );        //
//                                                            //
//   char *READINI::GetVersion( );                            //
//                                                            //
////////////////////////////////////////////////////////////////

#if     !defined(_READINI_H)
#define _READINI_H

#define NEW    0
#define MODIFY 1
#define PreMemorySize      512
#define NumricSize       256

enum BL{ READINIOFF=0, READINION=1 };

class READINI
{
   long GetFileLen( char *FileName );
   //-1: File Not Found
   //-2: Cancle
   //-3: Not Enough memory
   int  CopyFile( char *OldName, char *NewName );
   BL   AutoBackup;
public:
   READINI();
   //Mode = 0 ','
   //Mode = 1 ';'
   int  SplitMode;
   void SetSplitMode( int Mode );

   void SetAutoBackup( BL Auto=READINIOFF );

   void GetZero( char *Buf );
   void GetZeroR( char *Buf );
   // Return Title
   // Str = Str-Title
   // NULL=not found or Not enough memory
   char *GetStrTitle( char *Str, char *Compstr );
    //return 0:  OK
    //      -1:  Can not get int Parameters
    //        -2:  Not enough memory
   int  Get1Par(int Num, char  *Par, char *ParStr);
   int  Get1Par(int Num, long  *Par, char *ParStr);
   int  Get1Par(int Num, int   *Par, char *ParStr);
   int  Get1Par(int Num, float *Par, char *ParStr);
   int  Get1Par(int Num, unsigned int *Par, char *ParStr);
   //Read Data From "FileName"
   // 0: OK
   //-1: Can not open file
   //-2: No match field found
   //-3: Not enough memory
   int GetField( char *FileName, char *Group, char *Item, char *OutStr );
   int GetField( char *FileName, char *Group, char *Item, int Postion, char *OutStr );
   int GetField( char *FileName, char *Group, char *Item, int Postion, int  &OutStr );
   //int GetField( char *FileName, char *Group, char *Item, int Postion, unsigned int  &OutStr );
   int GetField( char *FileName, char *Group, char *Item, int Postion, float &OutStr );
   int GetField( char *FileName, char *Group, char *Item, int Postion, long &OutStr );
   int GetField( char *FileName, char *Group, char *Item, int Postion, unsigned long &OutStr );
   //Modify Data to "FileName"
   //-1: File Not Found
   //-3: Not Enough memory
   int WriteField( char *FileName, char *Group, char *Item, char *OutStr, int Mode=NEW );
   int WriteField( char *FileName, char *Group, char *Item, int  &OutStr, int Mode=NEW );
   int WriteField( char *FileName, char *Group, char *Item, unsigned &OutStr, int Mode=NEW );
   int WriteField( char *FileName, char *Group, char *Item, float &OutStr, int Mode=NEW );
   int WriteField( char *FileName, char *Group, char *Item, long  &OutStr, int Mode=NEW );
   int WriteField( char *FileName, char *Group, char *Item, unsigned long  &OutStr, int Mode=NEW );
   //
   int CreatGroupName( char *FileName, char *Group );
   int ModifyGroupName( char *FileName, char *Group, char *NewGroup, int Mode=NEW );
   //
   int DeleteGroup( char *FileName, char *Group );
   int DeleteField( char *FileName, char *Group, char *Item );
   //
   int FindGroupName( char *FileName, char *Group );
   //Get Version information
   char *GetVersion( );
   int  GetVer( );
};

extern READINI ReadIni;
#endif这是具体实现代码：    
////////////////////////////////////////////////////////////////
//                                  //
//         Configure file Reader for VATL Version2.0          //
//                                                            //
//                  Author: Wang.Ping                         //
//                                                            //
//                       Ver 1.3                              //
//                                                            //
//                    Date: 23/10/97                          //
//                                                  //
//        (c)Copyright V.A.T.L Development Workgroup          //
//                                                            //
////////////////////////////////////////////////////////////////
#include 
#include 
#include 
#include 

#include "readini.h"
#define  MAXBUFFER   200

READINI ReadIni;

READINI::READINI( )
{
}

void READINI::GetZero( char *Buf )
{
   int i=0, j=0;
   int Len=strlen( Buf );
   for( i=0; i      {
      if( Buf[i]==' ' )   { j++; continue; }
      else
     {
     for( i=0; i        Buf[i]=Buf[i+j];
     Buf[i]='/0';
  break;
  }
      }   if( j==Len )
      Buf[0]='/0';   for( i=0; i}void READINI::GetZeroR( char *Buf )
{
   int i=0, j=0;   for( i=0; i   for( i=0; i   for( i=0; i// 0: OK
//-1: Can not open file
//-2: No match field found
int READINI::GetField( char *FileName, char *Group, char *Item, int Postion, char *OutStr )
{
   char Buf[300];
   int i=0, FLAG=0;
   char *ptr;
   FILE *Ptr;
   if(( Ptr=fopen(FileName, "rt"))==NULL )
      return -1;   while( !FLAG )
      {
      if( fgets( Buf, 256, Ptr )==NULL )
  { FLAG=2; break; }      GetZero( Buf );
      if( !stricmp( Buf, Group ) )
  {
  for( ;; )
     {
     if( fgets( Buf, 256, Ptr )==NULL )
        break;     GetZero( Buf );     if( Buf[i]=='[' ) { FLAG=2; break; }
     else if( Buf[i]=='<' ) { FLAG=2; break; }
     else if( Buf[i]=='(' ) { FLAG=2; break; }     ptr=strtok( Buf,"=" );     GetZero( ptr );
     //GetZeroR( ptr );     if( !stricmp( Item, ptr ) )
        {
        for( i=0; i   GetZero( OutStr );   fclose( Ptr );   if( FLAG==1 )
      return 0;
   else
      return -2;
}// 0: OK
//-1: Can not open file
//-2: No match field found
int READINI::GetField( char *FileName, char *Group, char *Item, int Postion, int &OutStr )
{
   char Out_Str[300];
   int i=GetField( FileName, Group, Item, Postion, Out_Str );   OutStr = atoi( Out_Str );   return i;
}// 0: OK
//-1: Can not open file
//-2: No match field found
int READINI::GetField( char *FileName, char *Group, char *Item, int Postion, float &OutStr )
{
   char Out_Str[300];
   int i=GetField( FileName, Group, Item, Postion, Out_Str );   OutStr = atof( Out_Str );   return i;
}
// 0: OK
//-1: Can not open file
//-2: No match field found
int READINI::GetField( char *FileName, char *Group, char *Item, int Postion, long &OutStr )
{
   char Out_Str[300];
   int i=GetField( FileName, Group, Item, Postion, Out_Str );   OutStr = atol( Out_Str );   return i;
}//return 0:  OK
//      -1:  Can not get int Parameters
int READINI::Get1Par(int Num, char* Par, char *ParStr)
{
   char strptr[MAXBUFFER];
   char *ptr;
   strcpy(strptr, ParStr);
   ptr=strtok(strptr,",");
   if( ptr==NULL )   return -1;
   //GetZero( ptr );
   for(int i=0; i//return 0:  OK
//      -1:  Can not get int Parameters
int READINI::Get1Par(int Num, int *Par, char *ParStr)
{
   char Par_Str[257];
   int i=Get1Par( Num, Par_Str, ParStr );
   *Par = atoi( Par_Str );
   return i;
}//return 0:  OK
//      -1:  Can not get int Parameters
int READINI::Get1Par(int Num, float *Par, char *ParStr)
{
   char Par_Str[257];
   int i=Get1Par( Num, Par_Str, ParStr );
   *Par = atof( Par_Str );
   return i;
}//return 0:  OK
//      -1:  Can not get int Parameters
int READINI::Get1Par(int Num, unsigned int *Par, char *ParStr)
{
   char Par_Str[257];
   int i=Get1Par( Num, Par_Str, ParStr );
   *Par = atoi( Par_Str );
   return i;
}//return 0:  OK
//      -1:  Can not get int Parameters
int READINI::Get1Par(int Num, long *Par, char *ParStr)
{
   char Par_Str[257];
   int i=Get1Par( Num, Par_Str, ParStr );
   *Par = atol( Par_Str );
   return i;
}
char *READINI::GetVersion( )
{
   return "1.30";
} 
      由于是纯C++代码，在VC/EVC中直接使用即可。
      注：代码版权归原作者所有