unzip 压缩及解压文件夹c++示例

下面是一个使用C++的例子，展示如何压缩和解压文件夹：

#include <iostream>
#include <fstream>
#include <vector>
#include <cstring>
#include "zip.h"
#include "unzip.h"

void zipFolder(const std::string& folderPath, const std::string& zipPath) {
    zipFile zf = zipOpen(zipPath.c_str(), APPEND_STATUS_CREATE);
    if (zf == nullptr) {
        std::cerr << "Error opening " << zipPath << " for writing!" << std::endl;
        return;
    }

    std::vector<char> buffer(1024 * 1024);

    dirent* entry;
    DIR* dir = opendir(folderPath.c_str());
    while ((entry = readdir(dir))) {
        if (entry->d_type == DT_REG) {
            std::string filePath = folderPath + "/" + entry->d_name;
            std::ifstream file(filePath, std::ios::binary);
            if (!file) {
                std::cerr << "Error opening " << filePath << " for reading!" << std::endl;
                continue;
            }
            zip_fileinfo fileInfo = {0};
            zipOpenNewFileInZip(zf, entry->d_name, &fileInfo, nullptr, 0, nullptr, 0, nullptr, Z_DEFLATED, Z_DEFAULT_COMPRESSION);
            while (file.read(buffer.data(), buffer.size())) {
                zipWriteInFileInZip(zf, buffer.data(), static_cast<unsigned int>(file.gcount()));
            }
            zipCloseFileInZip(zf);
        }
    }
    closedir(dir);
    zipClose(zf, nullptr);
}

void unzipFolder(const std::string& zipPath, const std::string& folderPath) {
    unzFile uf = unzOpen(zipPath.c_str());
    if (uf == nullptr) {
        std::cerr << "Error opening " << zipPath << " for reading!" << std::endl;
        return;
    }

    std::vector<char> buffer(1024 * 1024);

    unz_global_info64 gi;
    unzGetGlobalInfo64(uf, &gi);
    for (uLong i = 0; i < gi.number_entry; ++i) {
        unz_file_info64 fileInfo;
        char fileName[MAX_PATH];
        unzGetCurrentFileInfo64(uf, &fileInfo, fileName, MAX_PATH, nullptr, 0, nullptr, 0);
        unzOpenCurrentFile(uf);
        std::string filePath = folderPath + "/" + std::string(fileName);
        std::ofstream file(filePath, std::ios::binary);
        if (!file) {
            std::cerr << "Error opening " << filePath << " for writing!" << std::endl;
            continue;
        }
        while (true) {
            int bytesRead = unzReadCurrentFile(uf, buffer.data(), buffer.size());
            if (bytesRead < 0) {
                std::cerr << "Error reading " << fileName << " from zip file!" << std::endl;
                break;
            }
            if (bytesRead == 0) {
                break;
            }
            file.write(buffer.data(), bytesRead);
        }
        file.close();
        unzCloseCurrentFile(uf);
        unzGoToNextFile(uf);
    }
    unzClose(uf);
}

int main() {
    std::string folderPath = "/path/to/folder";
    std::string zipPath = "/path/to/archive.zip";
    zipFolder(folderPath, zipPath);
    std::string unzipFolderPath = "/path/to/unzip/folder";
    unzipFolder(zipPath, unzipFolderPath);
    return 0;
}

这个例子使用了zlib库来进行压缩和解压缩，需要在代码中包含"zip.h"和"unzip.h"头文件，并且需要在编译时链接zlib库。