在使用 quick-cocos2d-x 做項(xiàng)目熱更新的時(shí)候，我需要建立臨時(shí)文件夾以保存下載的更新包。在更新完成后，我需要?jiǎng)h除這些臨時(shí)文件和文件夾。
在 cocos2d-x 2.x 中的 AssetsManager 包中提供了一個(gè) CreateDirectory 方法。這個(gè)方法可以跨平臺(tái)支持創(chuàng)建文件夾。在實(shí)際項(xiàng)目中運(yùn)行沒有問題。
bool AssetsManager::createDirectory(const char *path)
{
#if (CC_TARGET_PLATFORM != CC_PLATFORM_WIN32)
mode_t processMask = umask(0);
int ret = mkdir(path, S_IRWXU | S_IRWXG | S_IRWXO);
umask(processMask);
if (ret != 0 (errno != EEXIST))
{
return false;
}
return true;
#else
BOOL ret = CreateDirectoryA(path, NULL);
if (!ret ERROR_ALREADY_EXISTS != GetLastError())
{
return false;
}
return true;
#endif
}
void UpdateLayer::reset(cocos2d::CCObject *pSender)
{
pProgressLabel->setString(" ");
// Remove downloaded files
#if (CC_TARGET_PLATFORM != CC_PLATFORM_WIN32)
string command = "rm -r ";
// Path may include space.
command += "\"" + pathToSave + "\"";
system(command.c_str());
#else
string command = "rd /s /q ";
// Path may include space.
command += "\"" + pathToSave + "\"";
system(command.c_str());
#endif
// Delete recorded version codes.
getAssetsManager()->deleteVersion();
createDownloadedDir();
}
The iOS Simulator libSystem was initialized out of order. This is most often caused by running host executables or inserting host dylibs. In the future, this will cause an abort.
純 lua 其實(shí)是個(gè)噱頭。這里還是要依賴 lfs(lua file sytem)，好在 quick-cocos2d-x 已經(jīng)包含了這個(gè)庫。
lfs.rmdir 命令 和 os.remove 命令一樣，只能刪除空文件夾。因此實(shí)現(xiàn)類似 rm -rf 的功能， 必須要遞歸刪除文件夾中所有的文件和子文件夾。
require("lfs")
function os.exists(path)
return CCFileUtils:sharedFileUtils():isFileExist(path)
end
function os.mkdir(path)
if not os.exists(path) then
return lfs.mkdir(path)
end
return true
end
function os.rmdir(path)
print("os.rmdir:", path)
if os.exists(path) then
local function _rmdir(path)
local iter, dir_obj = lfs.dir(path)
while true do
local dir = iter(dir_obj)
if dir == nil then break end
if dir ~= "." and dir ~= ".." then
local curDir = path..dir
local mode = lfs.attributes(curDir, "mode")
if mode == "directory" then
_rmdir(curDir.."/")
elseif mode == "file" then
os.remove(curDir)
end
end
end
local succ, des = os.remove(path)
if des then print(des) end
return succ
end
_rmdir(path)
end
return true
end
