//ini文件操作类
//write by Khan
//最开头的注释默认的 section为 "###"
//普通的注释和空行 key为"##"

//所以 大家不要让配置文件的key = "##"
支持的注释格式 "#注释"


//LIniFile.h
#ifndef __LINI_FILE_H__
#define __LINI_FILE_H__

#include <string>
#include <vector>
#include <stdio.h>
#include <utility>

using namespace std;





class CLogFileException{
    string m_strError;

public:
    inline CLogFileException(string p_strError){ m_strError = m_strError; }
    inline string OnMessage(){ return this->m_strError; }
};






class LIniFile
{
public:
    LIniFile(const string p_strFileName);
    ~LIniFile(void);

public:
    string GetValue(const string p_strSection, const string p_strKey);
    int SetValue(const string p_strSection, const string p_strKey, const string p_strValue);
    void Print();

    int OpenIni(const string p_strFileName);
    int OpenIni();
    void CloseIni();
protected:


private:
    vector<pair<string, pair<string,string> > >   m_szStrItem;
    string m_strFileName;
    FILE*  m_fileHandle;



  string TrimL(string p_strValue);
  string TrimR(string p_strValue);
  string Trim(string p_strValue);
  void LIniFile::DeleteEnter(char *p_str, int size);
};

#endif //__LINI_FILE_H__











//LIniFile.cpp
#include "LIniFile.h"
#include <algorithm>


LIniFile::LIniFile(const string p_strFileName)
{
  this->m_strFileName = p_strFileName;
  this->m_fileHandle = NULL;
  //this->OpenIni(p_strFileName);
}

LIniFile::~LIniFile(void){
  //this->CloseIni();
}

int LIniFile::OpenIni(){
  return OpenIni(m_strFileName);
}

int  LIniFile::OpenIni(const string p_strFileName){
  this->m_fileHandle = fopen(p_strFileName.c_str(),"rt+");
  if (NULL == this->m_fileHandle) {
    return 0;
  }

  fseek(this->m_fileHandle, 0, SEEK_SET); //将文件指针指向文件开头
  char cTemp[512];
  memset(cTemp, 0, sizeof(cTemp));

  vector<string> vecStrItem;
  int iLen = 0;

  while(NULL != fgets(cTemp, sizeof(cTemp), this->m_fileHandle)){
    DeleteEnter(cTemp, sizeof(cTemp));//去结尾回车符
    Trim(cTemp); //去前后空格
    string str = cTemp;
    vecStrItem.push_back(str);
  }

  this->CloseIni();
 
  pair<string, string> pKVItem;
  pair<string, pair<string, string> > pItem;
  string strSection = "";
  string strCurrentSection = "";

  for (unsigned int i = 0; i < vecStrItem.size(); i++) {
    string strLine = ((string)vecStrItem[i]);

    if( '[' == strLine[0] ){
      strSection = strLine;

      strSection = strSection.erase(0,1);
      if(']' == strSection[strSection.size() -1 ])
        strSection = strSection.erase(strSection.size() - 1 );
      if (strCurrentSection != strSection)
        strCurrentSection = strSection;
     
  }else if( string::npos != strLine.find('=') ){
      if ("" != strCurrentSection ) {
        string strKey;
        string strValue;
        strKey = TrimR( strLine.substr(0, strLine.find('=')) );
        strValue = TrimL( strLine.substr(strLine.find('=') + 1, strLine.size() - strLine.find('=')  ) );
        pKVItem.first = strKey;
        pKVItem.second = strValue;
        pItem.first = strCurrentSection;
        pItem.second = pKVItem;
        m_szStrItem.push_back(pItem);
      }
  }else{
      if ("" != strCurrentSection ) {
          string strKey = "##";
          string strValue = TrimL( strLine );
          pKVItem.first = strKey;
          pKVItem.second = strValue;
          pItem.first = strCurrentSection;
          pItem.second = pKVItem;
          m_szStrItem.push_back(pItem);
    }else{
          string strKey = "##";
          string strValue = TrimL( strLine );
          pKVItem.first = strKey;
          pKVItem.second = strValue;
      pItem.first = "###";
          pItem.second = pKVItem;
          m_szStrItem.push_back(pItem);
    }
  }
  }

  return 1;
}

string LIniFile::GetValue(const string p_strSection, const string p_strKey){
  string strValue;
  for (unsigned i = 0; i< m_szStrItem.size(); i++) {
    if( p_strSection == (string) ( ((pair<string, pair<string, string> >)m_szStrItem[i]).first ) ){
      pair<string, string> pKVItem = ((pair<string, pair<string, string> >)m_szStrItem[i]).second;
      if ( p_strKey == (string)(pKVItem.first)) {
        strValue = (string)(pKVItem.second);
        break;
      }
    }
  }
  return strValue;
}


void LIniFile::Print(){
  string strValue;
  string strKey;
  string strSection;
  for (unsigned i = 0; i< m_szStrItem.size(); i++) {
    strSection = (string) ( ((pair<string, pair<string, string> >)m_szStrItem[i]).first );
    pair<string, string> pKVItem = ((pair<string, pair<string, string> >)m_szStrItem[i]).second;
    strKey = (string)(pKVItem.first);
    strValue = (string)(pKVItem.second);
  //if((strSection != "###") && (strKey != "##") )
    printf("[%s]:%s=%s\n", strSection.c_str(), strKey.c_str(), strValue.c_str());
  }
}


void LIniFile::CloseIni(){
  if(NULL != this->m_fileHandle){
    fclose(this->m_fileHandle);
    this->m_fileHandle = NULL;
  }
}


string LIniFile::TrimL(string p_strValue){
  int i = 0 ;
  if ((i=(int)(p_strValue.length())) < 1)
    return "";

  i = 0;
  while(isspace(p_strValue[i])){
    i++ ;
  }
  p_strValue.erase(0,i);

  return p_strValue;
}

string LIniFile::TrimR(string p_strValue){
  int i = 0;
  if ( (i = (int)(p_strValue.length()-1)) < 1 )
    return "";

  while( ( p_strValue[i] ) == ' ' ){
    i--;
  }
  p_strValue.erase(i + 1);
  return p_strValue;
}


string LIniFile::Trim(string p_strValue){
  return TrimL(TrimR(p_strValue));
}

int LIniFile::SetValue(const string p_strSection, const string p_strKey, const string p_strValue){
  pair<string, string> pKVItem;
  pair<string, pair<string, string> > pItem;

  pKVItem.first = p_strKey;
  pKVItem.second = p_strValue;
  pItem.first = p_strSection;
  pItem.second = pKVItem;

  int bFind = 0;

  for(int i = (int)(m_szStrItem.size())-1; i >= 0; i--){ //找到已有的section, 并在末尾添加
    string bb = m_szStrItem[i].second.first;
    if((m_szStrItem[i].first == p_strSection)  && (m_szStrItem[i].second.first != "##")/* && (m_szStrItem[i].second.second != "")*/){
      m_szStrItem.insert( m_szStrItem.begin()+ i+1, pItem );
      bFind = 1;
      break;
    }
  }

  if(bFind != 1) //如果是新增的section
    m_szStrItem.push_back(pItem);

  this->m_fileHandle = fopen(this->m_strFileName.c_str(),"wt+");
  //this->m_fileHandle = fopen("c:\\aaa.ini","wt+");
  if (NULL == this->m_fileHandle) {
    return 0;
  }

  string strCurSection = "";
  string strTmp = "";

  if((int)(m_szStrItem.size()) > 0){

    strCurSection = m_szStrItem[0].first;
    if(strCurSection != "###"){
      strTmp = "[" + strCurSection + "]" + "\n";
      fputs(strTmp.c_str(), this->m_fileHandle);
    }

    for(int i=0; i<(int)(m_szStrItem.size()); i++){
      if( strCurSection ==  m_szStrItem[i].first ){

        if((m_szStrItem[i].second.first == "##") && (m_szStrItem[i].second.second ==""))
          strTmp = "\n";
        else if((m_szStrItem[i].second.first == "##") && (m_szStrItem[i].second.second !=""))
          strTmp = m_szStrItem[i].second.second+ "\n";
        else
          strTmp = m_szStrItem[i].second.first + " = " + m_szStrItem[i].second.second+ "\n";

        fputs(strTmp.c_str(), this->m_fileHandle);
      }else{

        strCurSection = m_szStrItem[i].first;
        if(strCurSection != "###"){
          string strTmp = "[" + strCurSection + "]"+ "\n";
          fputs(strTmp.c_str(), this->m_fileHandle);
        }

        if((m_szStrItem[i].second.first == "##") && (m_szStrItem[i].second.second ==""))
          strTmp = "\n";
        else if((m_szStrItem[i].second.first == "##") && (m_szStrItem[i].second.second !=""))
          strTmp = m_szStrItem[i].second.second+ "\n";
        else
          strTmp = m_szStrItem[i].second.first + " = " + m_szStrItem[i].second.second+ "\n";

        fputs(strTmp.c_str(), this->m_fileHandle);
      }
    }
  }
  this->CloseIni();
  return 1;
}




void LIniFile::DeleteEnter(char *p_str, int size){
  int i_len = (int)(strlen(p_str));
  if(p_str[i_len-1] == 0x0d || p_str[i_len-1] == 0x0a)
    p_str[i_len-1] = 0x00;

  i_len =  (int)(strlen(p_str));
  if(p_str[i_len-1] == 0x0d || p_str[i_len-1] == 0x0a)
    p_str[i_len-1] = 0x00;
}




调用方式

#include "LIniFile.h"


int main(int argc, char** argv)
{
    LIniFile ini("d:\\My Documents\\Visual Studio 2005\\Projects\\inifile\\cbm.ini");
    ini.OpenIni();
    ini.SetValue("cbm","a", "b");
    ini.SetValue("aaa","a", "b");

    ini.Print();
    ini.CloseIni();

    getchar();
    return 0;
}


处理前的日志文件内容


处理后的ini内容