window下遍历并修改文件

提示：扫一扫查出行
【扫一扫了解最新限行尾号】
复制提示

今天需要写一个遍历文件夹下的所有文件，试了试以前的方法竟然报错了。重新改了一下。

#include <iostream>

#include <stdlib.h>

#include <windows.h>

#include <fstream>

#include <iterator>

#include <string>

#include <time.h>

#include <math.h>

using namespace std;

wchar_t* CharToWchar(const char* c)

{

    wchar_t *m_wchar;

    int len = MultiByteToWideChar(CP_ACP, , c, strlen(c), NULL, );

    m_wchar = new wchar_t[len + ];

    //映射一个字符串到一个宽字符（unicode）的字符串

    MultiByteToWideChar(CP_ACP, , c, strlen(c), m_wchar, len);

    m_wchar[len] = '\0';

    return m_wchar;

}

char* WcharToChar(const wchar_t* wp)

{

    char *m_char;

    //映射一个unicode字符串到一个多字节字符串

    int len = WideCharToMultiByte(CP_ACP, , wp, wcslen(wp), NULL, , NULL, NULL);

    m_char = new char[len + ];

    WideCharToMultiByte(CP_ACP, , wp, wcslen(wp), m_char, len, NULL, NULL);

    m_char[len] = '\0';

    //printf("my char %s\n", m_char);

    return m_char;

}

wchar_t* StringToWchar(const string& s)

{

    const char* p = s.c_str();

    return CharToWchar(p);

}

void operate(string name)

{

    ifstream file(name);

    string tempStr;

    int i = ;

    while (file) {

        string line;

        getline(file, line);

        cout << line << endl;

        if (line == "")break;

        if (i == ) {

            tempStr = line;

            tempStr += "第一行加这个\n";

        }

        else {

            tempStr += line;

            tempStr += "其他行\n";

        }

        i++;

    }

    ofstream outfile(name, ios::out | ios::trunc);

    outfile << tempStr << endl;

}

int main()

{

    int j = ;

    char* Path = "files/*.*";

    HANDLE hFile;

    LPCTSTR lp = Path;

    WIN32_FIND_DATA pNextInfo;

    hFile = FindFirstFile(lp, &pNextInfo);

    if (hFile == INVALID_HANDLE_VALUE) {

        cout << "failed" << endl;

        exit(-);//搜索失败

    }

    cout << "路径名:" << Path << endl;

    do {

        //必须加这句，不然会加载.和..的文件而加载不了图片，

        if (pNextInfo.cFileName[] == '.')continue;

        string name = pNextInfo.cFileName;

        cout << name << endl;

        operate(".\\files\\"+name);

        j++;

    } while (FindNextFile(hFile, &pNextInfo));

    system("pause");

    return ;

}