标准c++读写ini文件类

本类是在网络上的一个标准ini读写类修改扩展而来，新增了获取当前可执行文件路径，宽字节转多字节功能

IniFileSTL.h：

#ifndef _FISH_INI_FILE_
#define _FISH_INI_FILE_#include <string>
#include <vector>namespace fish
{
using namespace std;class IniFileSTL
{
public:explicit IniFileSTL(const string &fileName);~IniFileSTL(void);bool ReadFile(void);string ReadString( const string &section, const string &key, const string &value );int    ReadInt( const string &section, const string &key, int value );bool WriteString( const string &section, const string &key, const string &value );bool WriteInt( const string &section, const string &key, int value );bool RemoveSection( const string &section );bool RemoveKey( const string &section, const string &key );bool WriteFile(void);//获取当前可执行文件的路径（不包含EXE文件名）static string GetExeDir();//宽字节转多字节(wchar-char)static char* WcharToChar(const wchar_t* wp);//多字节转宽字节（char-wchar）static wchar_t* CharToWchar(const char* cp);
private:static string Trim( const string &str );static string LTrim( const string &str );static string RTrim( const string &str );
private:string m_fileName;vector<string> m_vctLine;
};}#endif//简单使用例子
//#include <stdio.h>
//#include <iostream>
//#include "IniFile.h"
//
//using namespace fish;
//
//int main(int argc, char **argv)
//{
//  IniFile ini("./test.ini");
//  cout<<ini.ReadString("system","ipaddr", "10.70.101.134")<<endl;
//  cout<<ini.ReadInt("system","tcpport", 7050 )<<endl;
//  return 0;
//}

IniFileSTL.cpp：

#include "stdafx.h"
#include "IniFileSTL.h"
#include <fstream>
#include <strstream>
#include <string>
namespace fish
{IniFileSTL::IniFileSTL(const string &fileName)
:m_fileName(fileName)
{ReadFile();
}IniFileSTL::~IniFileSTL(void)
{WriteFile();
}//获取当前可执行文件的路径（不包含EXE文件名）
string IniFileSTL::GetExeDir()
{wchar_t exeFullPath[MAX_PATH]; // Full path  string StrPath=" "; GetModuleFileName(NULL, exeFullPath, MAX_PATH); StrPath=(string)WcharToChar(exeFullPath);    // Get full path of the file   int leng = StrPath.length();int pos = StrPath.find_last_of('\\', StrPath.length());  StrPath=StrPath.substr(0, pos); return StrPath.substr(0, pos);  // Return the directory without the file name
}//宽字节转多字节(wchar-char)
char* IniFileSTL::WcharToChar(const wchar_t* wp)
{locale old_loc = locale::global(locale(""));size_t len = wcslen(wp)*sizeof(wchar_t);size_t converted=0;char*CStr;CStr=(char*)malloc(len);wcstombs_s(&converted,CStr,len,wp,_TRUNCATE);locale::global(old_loc);return CStr;
}//多字节转宽字节（char-wchar）
wchar_t* IniFileSTL::CharToWchar(const char* cp)
{locale old_loc = locale::global(locale(""));size_t len = strlen(cp)*sizeof(char);size_t converted=0;wchar_t *WStr;WStr=(wchar_t*)malloc(2*len);mbstowcs_s(&converted,WStr,len,cp,_TRUNCATE);locale::global(old_loc);return WStr;
}bool IniFileSTL::ReadFile( void )
{ifstream in(m_fileName.c_str());bool bopen = in.is_open();string line;while( getline(in,line) ){m_vctLine.push_back(line);}return true;
}string IniFileSTL::ReadString( const string &section, const string &key, const string &value )
{for( size_t i = 0;i < m_vctLine.size(); ++i ){string &section_line = m_vctLine[i];size_t sec_begin_pos = section_line.find('[');if( sec_begin_pos == string::npos || sec_begin_pos != 0 ){continue;}size_t sec_end_pos = section_line.find( ']', sec_begin_pos );if( sec_end_pos == string::npos ){continue;}if( section != Trim(section_line.substr(sec_begin_pos+1, sec_end_pos-sec_begin_pos-1) ) ){continue;}//find key, ÕâÀïµÄÏÂ±ê»¹ÊÇifor( ++i; i < m_vctLine.size(); ++i ){string &key_line = m_vctLine[i];size_t sec_pos = key_line.find('[');if( sec_pos != string::npos && sec_pos == 0 ){--i;  //reback a step,find againbreak;//the line is section line}size_t begin_key_pos = key_line.find(key);if( begin_key_pos == string::npos ){continue;}size_t equal_pos = key_line.find( '=', begin_key_pos );if( equal_pos == string::npos ){continue;}if( key != Trim(key_line.substr( begin_key_pos, equal_pos - begin_key_pos) ) ){continue;}size_t comment_pos = key_line.find( "#", equal_pos + 1 );if( comment_pos != string::npos ){//²»Òª×¢ÊÍreturn Trim(key_line.substr( equal_pos + 1, comment_pos - equal_pos - 1 ));}return Trim(key_line.substr( equal_pos + 1 ));}}return value;
}bool IniFileSTL::WriteString( const string &section, const string &key, const string &value )
{for( size_t i = 0;i < m_vctLine.size(); ++i ){string &section_line = m_vctLine[i];size_t sec_begin_pos = section_line.find('[');if( sec_begin_pos == string::npos || sec_begin_pos != 0 ){continue;}size_t sec_end_pos = section_line.find( ']', sec_begin_pos );if( sec_end_pos == string::npos ){continue;}if( section != Trim(section_line.substr(sec_begin_pos+1, sec_end_pos-sec_begin_pos-1)) ){continue;}//find key, ÕâÀïµÄÏÂ±ê»¹ÊÇifor( ++i; i < m_vctLine.size(); ++i ){string &key_line = m_vctLine[i];size_t sec_pos = key_line.find('[');if( sec_pos != string::npos && sec_pos == 0 ){--i;  //reback a step,find againbreak;//the line is section line}size_t begin_key_pos = key_line.find(key);if( begin_key_pos == string::npos ){continue;}size_t equal_pos = key_line.find( '=', begin_key_pos );if( equal_pos == string::npos ){continue;}if( key != Trim(key_line.substr( begin_key_pos, equal_pos - begin_key_pos )) ){continue;}size_t comment_pos = key_line.find( "#", equal_pos + 1 );string new_line = key_line.substr( 0, equal_pos + 1 ) + value;if( comment_pos != string::npos ){new_line += key_line.substr( comment_pos );}key_line = new_line;return true;}//Î´ÕÒµ½keym_vctLine.insert( m_vctLine.begin() + i, key + "=" + value ); return true;}//sectionºÍkey¶¼²»´æÔÚm_vctLine.insert( m_vctLine.end(), "" );m_vctLine.insert( m_vctLine.end(), "[" + section + "]" );m_vctLine.insert( m_vctLine.end(), key + "=" + value );return true;
}bool IniFileSTL::RemoveSection( const string &section )
{for( size_t i = 0;i < m_vctLine.size(); ++i ){string &section_line = m_vctLine[i];size_t sec_begin_pos = section_line.find('[');if( sec_begin_pos == string::npos || sec_begin_pos != 0 ){continue;}size_t sec_end_pos = section_line.find( ']', sec_begin_pos );if( sec_end_pos == string::npos ){continue;}if( section != Trim(section_line.substr(sec_begin_pos+1, sec_end_pos-sec_begin_pos-1)) ){continue;}//ÕÒµ½ÁËsectionsize_t del_begin = i;for( ++i ; i < m_vctLine.size(); ++i ){string &next_section = m_vctLine[i];size_t next_pos = next_section.find('[');if( next_pos == string::npos || next_pos != 0 ){continue;}break;}m_vctLine.erase( m_vctLine.begin() + del_begin, m_vctLine.begin()+i );return true;}return false;
}bool IniFileSTL::RemoveKey( const string &section, const string &key )
{for( size_t i = 0;i < m_vctLine.size(); ++i ){string &section_line = m_vctLine[i];size_t sec_begin_pos = section_line.find('[');if( sec_begin_pos == string::npos || sec_begin_pos != 0 ){continue;}size_t sec_end_pos = section_line.find( ']', sec_begin_pos );if( sec_end_pos == string::npos ){continue;}if( section != Trim(section_line.substr(sec_begin_pos+1, sec_end_pos-sec_begin_pos-1)) ){continue;}//ÕÒµ½ÁËsectionfor( ++i ; i < m_vctLine.size(); ++i ){string &key_line = m_vctLine[i];size_t key_pos = key_line.find( key );if( key_pos == string::npos || key_pos != 0 ){continue;}else{m_vctLine.erase( m_vctLine.begin() + i );return true;}}}return false;
}bool IniFileSTL::WriteFile( void )
{ofstream out(m_fileName.c_str());for( size_t i = 0; i < m_vctLine.size(); ++i ){out<<m_vctLine[i]<<endl;}return true;
}int IniFileSTL::ReadInt( const string &section, const string &key, int value )
{string str = ReadString( section, key, "" );if( "" == str ){return value;}istrstream in( str.c_str() );int ret = 0;in>>ret;return ret;
}bool IniFileSTL::WriteInt( const string &section, const string &key, int value )
{ostrstream out;out<<value;//char buffer[64] = "";//itoa( value, buffer, 10 );return WriteString( section, key, out.str() );
}string IniFileSTL::LTrim( const string &str )
{size_t pos = 0;while( pos != str.size() ){if( ' ' == str[pos] ){++pos;}else{break;}}return str.substr(pos);
}string IniFileSTL::RTrim( const string &str )
{size_t pos = str.size() - 1;while( pos >= 0 ){if(' ' == str[pos]){--pos;}else{break;}}return str.substr( 0, pos + 1 );
}string IniFileSTL::Trim(const string &str)
{return LTrim( RTrim(str) );
}}

简单使用案例：

 string str;fish::IniFileSTL ini(fish::IniFileSTL::GetExeDir()+"\\cfglocal.ini");str=ini.ReadString("OccMarkShow","Showflag","0");

参考文件：csdn下载资源

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标准c++读写ini文件类

IniFileSTL.h：

IniFileSTL.cpp：

简单使用案例：

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