private void LoadDependInfo(out AssetBundleReader reader, string fileName)
{
reader = null;
string depFilePath = Path.Combine(_pathResolver.bundleDir, fileName);
FileStream fs = new FileStream(depFilePath, FileMode.Open, FileAccess.Read);
if (fs.Length > 4)
{
BinaryReader br = new BinaryReader(fs);
if (br.ReadChar() == 'A' && br.ReadChar() == 'B' && br.ReadChar() == 'D')
{
if (br.ReadChar() == 'T')
{
reader = new AssetBundleReaderText();
}
else
{
reader = new AssetBundleReaderBinary();
}
fs.Position = 0;
reader.Read(fs);
}
}
fs.Close();
}
private IEnumerator CheckUpdate()
{
if (!Directory.Exists(_pathResolver.bundleDir))
{
Directory.CreateDirectory(_pathResolver.bundleDir);
}
// 下载bundle.info文件至
Debug.Log("Download bundle.info...");
WWW www = new WWW(string.Format("{0}/{1}", _pathResolver.bundleURL, _pathResolver.dependInfoFileName));
yield return(www);
if (!string.IsNullOrEmpty(www.error))
{
Debug.LogError(www.error);
www.Dispose();
//TODO:下载失败处理
yield break;
}
// 写入persist目录并命名为bundle.info.new
File.WriteAllBytes(string.Format("{0}/{1}", _pathResolver.bundleDir, _pathResolver.dependInfoFileNameNew), www.bytes);
www.Dispose();
yield return(null);
// 下载完成，解析bundle.info.new文件
LoadDependInfo(out _dependInfoReaderNew, _pathResolver.dependInfoFileNameNew);
// 比较版本号，当前是最新版本的话跳过更新
if (_dependInfoReader.version >= _dependInfoReaderNew.version)
{
File.Delete(Path.Combine(_pathResolver.bundleDir, _pathResolver.dependInfoFileNameNew));
if (onInited != null)
{
onInited();
}
//Util.EventDispatcher.TriggerEvent(Global.UpdateFinish);
yield break;
}
// 删除最新版已经删除但是persist下还存在的ab
foreach (var info in _dependInfoReader.infoMap)
{
if (!_dependInfoReaderNew.infoMap.ContainsKey(info.Key))
{
File.Delete(string.Format("{0}/{1}.ab", _pathResolver.bundleDir, info.Key));
}
}
// 统计需要更新的文件及大小
long needUpdateSize = 0;
Dictionary <string, long> needUpdateABs = new Dictionary <string, long>();
foreach (var info in _dependInfoReaderNew.infoMap)
{
string abName = info.Key;
AssetBundleData abData = info.Value;
if (!_dependInfoReader.infoMap.ContainsKey(abName) || _dependInfoReader.infoMap[abName].hash != abData.hash)
{
needUpdateABs.Add(abName, abData.size);
needUpdateSize += abData.size;
}
}
// 更新
long updatedSize = 0;
foreach (var ab in needUpdateABs)
{
string abName = ab.Key;
Debug.Log(string.Format("Update {0}...", abName));
www = new WWW(Path.Combine(_pathResolver.bundleURL, abName));
yield return(www);
if (!string.IsNullOrEmpty(www.error))
{
Debug.LogError(www.error);
www.Dispose();
continue;
}
string abPath = Path.Combine(_pathResolver.bundleDir, abName);
File.WriteAllBytes(abPath, www.bytes);
www.Dispose();
// 解压
string decompressPath = string.Format("{0}.tmp", abPath);
LZMAUtil.DecompressFile(abPath, decompressPath);
File.Delete(abPath);
yield return(null);
File.Move(decompressPath, abPath);
updatedSize += ab.Value;
}
// 覆盖bundle.info文件
string dependInfoFilePath = Path.Combine(_pathResolver.bundleDir, _pathResolver.dependInfoFileName);
string newDependInfoFilePath = Path.Combine(_pathResolver.bundleDir, _pathResolver.dependInfoFileNameNew);
File.Delete(dependInfoFilePath);
File.Move(newDependInfoFilePath, dependInfoFilePath);
_dependInfoReader = _dependInfoReaderNew;
_dependInfoReaderNew = null;
// 初始化完成
if (onInited != null)
{
onInited();
}
}
