Method extractFileFromZip

source/io/fszip.cpp:234–286

}

bool FsZip::extractFileFromZip(BString zipFile, BString file, BString path) {
    unzFile z = unzOpen(zipFile.c_str());
    unz_global_info global_info = {};
    if (!z) {
        return false;
    }
    if (unzGetGlobalInfo( z, &global_info ) != UNZ_OK) {
        unzClose( z );
        return false;
    }
    for (U32 i = 0; i < global_info.number_entry; ++i) {
        unz_file_info file_info;
        char tmp[MAX_FILEPATH_LEN];

        if ( unzGetCurrentFileInfo(z, &file_info, tmp, MAX_FILEPATH_LEN, nullptr, 0, nullptr, 0 ) != UNZ_OK ) {
            unzClose( z );
            return false;
        }
        
        if (file == tmp) {
            unzOpenCurrentFile(z);            
            if (!Fs::doesNativePathExist(path)) {
                Fs::makeNativeDirs(path);
            }
            BString outPath = path.stringByApppendingPath(Fs::getFileNameFromPath(file));
            FILE* f = fopen(outPath.c_str(), "wb");
            if (f) {
                U32 totalRead = 0;
                U8 buffer[4096] = {};

                while (totalRead<file_info.uncompressed_size) {
                    U32 read = unzReadCurrentFile(z, buffer, sizeof(buffer));
                    if (!read) {
                        break;
                    }
                    totalRead += read;
                    fwrite(buffer, read, 1, f);
                }
                fclose(f);
                unzCloseCurrentFile(z);
                unzClose(z);
                return totalRead==file_info.uncompressed_size;
            } else {
                unzCloseCurrentFile(z);
                unzClose(z);
                return false;
            }
        }
        unzGoToNextFile(z);
    }
    unzClose(z);
    return false;
}

bool FsZip::iterateFiles(BString zipFile, std::function<void(BString)> it) {
    unzFile z = unzOpen(zipFile.c_str());