剛剛升級鳥xcode9，發現跑cocos專案編譯CCFileUtils.cpp異常 『call to unavailable function system not available on ios  』

解決方案:

// default implements for unix like os
#include <sys/types.h>
#include <errno.h>
#include <dirent.h>

// android doesn't have ftw.h
#if (CC_TARGET_PLATFORM != CC_PLATFORM_ANDROID)
#include <ftw.h>
#endif

bool FileUtils::isDirectoryExistInternal(const std::string& dirPath) const
{
    struct stat st;
    if (stat(dirPath.c_str(), &st) == 0)
    {
        return S_ISDIR(st.st_mode);
    }
    return false;
}

bool FileUtils::createDirectory(const std::string& path)
{
    CCASSERT(!path.empty(), "Invalid path");

    if (isDirectoryExist(path))
        return true;

    // Split the path
    size_t start = 0;
    size_t found = path.find_first_of("/\\", start);
    std::string subpath;
    std::vector<std::string> dirs;

    if (found != std::string::npos)
    {
        while (true)
        {
            subpath = path.substr(start, found - start + 1);
            if (!subpath.empty())
                dirs.push_back(subpath);
            start = found+1;
            found = path.find_first_of("/\\", start);
            if (found == std::string::npos)
            {
                if (start < path.length())
                {
                    dirs.push_back(path.substr(start));
                }
                break;
            }
        }
    }

    DIR *dir = NULL;

    // Create path recursively
    subpath = "";
    for (int i = 0; i < dirs.size(); ++i)
    {
        subpath += dirs[i];
        dir = opendir(subpath.c_str());

        if (!dir)
        {
            // directory doesn't exist, should create a new one

            int ret = mkdir(subpath.c_str(), S_IRWXU | S_IRWXG | S_IRWXO);
            if (ret != 0 && (errno != EEXIST))
            {
                // current directory can not be created, sub directories can not be created too
                // should return
                return false;
            }
        }
        else
        {
            // directory exists, should close opened dir
            closedir(dir);
        }
    }
    return true;
}

namespace
{
#if (CC_TARGET_PLATFORM != CC_PLATFORM_ANDROID)
    int unlink_cb(const char *fpath, const struct stat *sb, int typeflag, struct FTW *ftwbuf)
    {
        int rv = remove(fpath);
        if (rv)
            perror(fpath);
        return rv;
    }
#endif
}


bool FileUtils::removeDirectory(const std::string& path)
{
#if !defined(CC_TARGET_OS_TVOS)
#if (CC_TARGET_PLATFORM != CC_PLATFORM_ANDROID)
    if (nftw(path.c_str(), unlink_cb, 64, FTW_DEPTH | FTW_PHYS) == -1)
        return false;
    else
        return true;
#else
    std::string command = "rm -r ";
    // Path may include space.
    command += "\"" + path + "\"";
    if (system(command.c_str()) >= 0)
        return true;
    else
        return false;
#endif // (CC_TARGET_PLATFORM != CC_PLATFORM_ANDROID)
#else
    return false;
#endif // !defined(CC_TARGET_OS_TVOS)
}
 

參考:https://github.com/cocos-creator/cocos2d-x-lite/pull/828/commits/adc421c27a74317115af9763ec205d44b4dd52bc