[Log book] stringstream的建構子中不可傳入其他建構子

─ 問題描述

目標：在win 10環境下使用VS 2008的C++讀入ini檔並用逗點分隔讀入的key值

使用方法及問題：使用std的iostream類的函式，並用getline來分割，但在getline的函式一直編譯出錯，編譯器一直顯示引數類型不正確、没有相關多載之類的錯誤訊息。

下面是程式碼

#include <iostream>

#include <iomanip>

#include <vector>

#include <string>

#include <sstream>

#include "tchar.h"  

#include "windows.h"

#define COUNTOF(x)  ( sizeof(x) / sizeof((x)[0]) )

bool GetCurrentDirectory(TCHAR *obuf, DWORD osize)

{

    if ( ! GetModuleFileName(0, obuf, osize) )

    {

        *obuf = '\0';

        return FALSE;

    }

    TCHAR *lastslash = 0;

    for ( ; *obuf; obuf ++)   

    {   

        if ( *obuf == '\\' || *obuf == '/' )   

            lastslash = obuf;   

    }   

    

    if ( lastslash ) *lastslash = '\0';  

    

    return TRUE;   

}

void main()

{

        TCHAR filebuf[256];

        char data[100];

        std::string tempStr;

        std::vector<std::string> output;

        if ( GetCurrentDirectory(filebuf, COUNTOF(filebuf)) )   

    {  

               wcscat_s(filebuf,_T("\\IrregularShapeSetting.ini"));

               TCHAR temp_str[100];

               ::GetPrivateProfileString(_T("Irregular Shape Setting"), _T("Folder"),  _T("="), temp_str, 100, filebuf);

               wcstombs(data, temp_str, 100);

               std::string ConverToStr = std::string(data);

               

               std::stringstream folders(std::string(data)); // 但問題在這

               while (std::getline(folders, tempStr, ',')) // 出錯在這行

                       output.push_back(tempStr);

               for(int i = 0; i < output.size(); i++)

                       std::cout << output[i].c_str() << std::endl;

    }   

    else

    {           

               wprintf_s(_T("ERROR: cannot get irregular shape inspection setting  directory\n"));

    }

        system("pause");

}

下面是錯誤訊息

─ 思路

既然在stringstream的建構子中使用string的建構子無法編譯成功，那先建構string再將string丟入。

─ 解決方法

先建構string再將string丟入。

#include <iostream>

#include <iomanip>

#include <vector>

#include <string>

#include <sstream>

#include "tchar.h"  

#include "windows.h"

#define COUNTOF(x)  ( sizeof(x) / sizeof((x)[0]) )

bool GetCurrentDirectory(TCHAR *obuf, DWORD osize)

{

    if ( ! GetModuleFileName(0, obuf, osize) )

    {

        *obuf = '\0';

        return FALSE;

    }

    TCHAR *lastslash = 0;

    for ( ; *obuf; obuf ++)   

    {   

        if ( *obuf == '\\' || *obuf == '/' )   

            lastslash = obuf;   

    }   

    

    if ( lastslash ) *lastslash = '\0';  

    

    return TRUE;   

}

void main()

{

        TCHAR filebuf[256];

        char data[100];

        std::string tempStr;

        std::vector<std::string> output;

        if ( GetCurrentDirectory(filebuf, COUNTOF(filebuf)) )   

    {  

               wcscat_s(filebuf,_T("\\IrregularShapeSetting.ini"));

               TCHAR temp_str[100];

               ::GetPrivateProfileString(_T("Irregular Shape Setting"), _T("Folder"),  _T("="), temp_str, 100, filebuf);

               wcstombs(data, temp_str, 100);

               std::string ConverToStr = std::string(data);

               

               std::stringstream folders(ConverToStr);

               while (std::getline(folders, tempStr, ','))

                       output.push_back(tempStr);

               for(int i = 0; i < output.size(); i++)

                       std::cout << output[i].c_str() << std::endl;

    }   

    else

    {           

               wprintf_s(_T("ERROR: cannot get irregular shape inspection setting  directory\n"));

    }

        system("pause");

}

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