public static string GetPathMD5(string path)
{
string md5;
if (s_pathMD5Dic.ContainsKey(path))
{
s_pathMD5Dic.TryGetValue(path, out md5);
}
else
{
md5 = MD5Util.GetMD5(path);
s_pathMD5Dic.Add(path, md5);
}
return(md5);
}
/// <summary>
/// 重命名文件，加入文件MD5字符串。
/// 写入路径的长度（一字节），写入路径，以及对应的文件MD5。
/// </summary>
/// <param name="filePath">File path.</param>
/// <param name="replacePath">Replace path.</param>
/// <param name="writer">Writer.</param>
private static void RenameFileAndWriteMD5(string filePath, string replacePath, BinaryWriter writer)
{
string extName = Path.GetExtension(filePath);
string fileName = Path.GetFileName(filePath);
string fileMD5 = MD5Util.GetFileMD5(filePath);
string outFileName = fileName.Replace(extName, "") + "_" + fileMD5;
string outFilePath = Path.GetDirectoryName(filePath) + "/" + outFileName + extName;
File.Move(filePath, outFilePath); // 重命名文件
filePath = filePath.Replace(replacePath, "").Replace(extName, ""); // 文件路径掐头去尾
writer.Write((byte)filePath.Length); // 写入路径的长度（一字节）
writer.Write(filePath.ToCharArray()); // 写入路径
writer.Write(fileMD5.ToCharArray()); // 写入文件MD5
}
private static void CreateResInfo(UpdateResInfoType updateType = UpdateResInfoType.ALL)
{
byte[] luaBytes = null, sceneBytes = null, resBytes = null;
if (updateType != UpdateResInfoType.ALL)
{
if (!File.Exists(resInfoFilePath)) // ResInfo 文件不存在
{
updateType = UpdateResInfoType.ALL;
}
else
{
// 只用更新某部分资源信息，将资源信息分类读取出来
using (BinaryReader reader = new BinaryReader(File.Open(resInfoFilePath, FileMode.Open))) {
ushort ushort1, ushort2, i;
byte byte1, byte2;
int sceneBytesPos, resBytesPos;
// - lua bytes
ushort1 = reader.ReadUInt16();
for (i = 0; i < ushort1; i++)
{
byte2 = reader.ReadByte();
reader.BaseStream.Position += byte2 + 16;
}
sceneBytesPos = (int)reader.BaseStream.Position;
reader.BaseStream.Position = 0;
luaBytes = reader.ReadBytes(sceneBytesPos);
// - scene bytes
byte1 = reader.ReadByte();
for (i = 0; i < byte1; i++)
{
byte2 = reader.ReadByte();
reader.BaseStream.Position += byte2 + 16;
}
resBytesPos = (int)reader.BaseStream.Position;
reader.BaseStream.Position = sceneBytesPos;
sceneBytes = reader.ReadBytes(resBytesPos - sceneBytesPos);
// - res bytes
ushort1 = reader.ReadUInt16();
for (i = 0; i < ushort1; i++)
{
byte2 = reader.ReadByte();
reader.BaseStream.Position += byte2 + 16;
// 包含的资源文件
ushort2 = reader.ReadUInt16();
reader.BaseStream.Position += ushort2 * 16;
// 依赖的 AssetBundle
byte2 = reader.ReadByte();
reader.BaseStream.Position += byte2 * 16;
}
reader.BaseStream.Position = resBytesPos;
resBytes = reader.ReadBytes((int)reader.BaseStream.Length - resBytesPos);
}
}
}
// 写入资源信息
using (BinaryWriter writer = new BinaryWriter(File.Open(resInfoFilePath, FileMode.Create))) {
// - lua
if (updateType == UpdateResInfoType.ALL || updateType == UpdateResInfoType.LUA)
{
writer.Write((ushort)_luaList.Count); // 写入lua文件数量
foreach (string lua in _luaList)
{
RenameFileAndWriteMD5(lua, luaOutputPath, writer);
}
}
else
{
writer.Write(luaBytes);
}
// - scene
if (updateType == UpdateResInfoType.ALL || updateType == UpdateResInfoType.SCENE)
{
writer.Write((byte)_sceneList.Count); // 写入场景文件数量（一字节）
foreach (string scene in _sceneList)
{
RenameFileAndWriteMD5(scene, sceneOutputPath, writer);
}
}
else
{
writer.Write(sceneBytes);
}
// - res
if (updateType == UpdateResInfoType.ALL || updateType == UpdateResInfoType.RES)
{
// 加载 Assets/StreamingAssets/Res/Res 文件，读取包含所有ab包引用关系的 manifest
AssetBundle ab = AssetBundle.LoadFromFile(resOutputPath + "Res");
AssetBundleManifest manifest = (AssetBundleManifest)ab.LoadAsset("AssetBundleManifest");
string[] abList = manifest.GetAllAssetBundles();
writer.Write((ushort)abList.Length); // 写入ab文件数量
AssetBundleInfo abi;
foreach (string abPath in abList)
{
RenameFileAndWriteMD5(resOutputPath + abPath, resOutputPath, writer);
_abiDic.TryGetValue(abPath, out abi);
writer.Write((ushort)abi.assetList.Count); // 写入包含的资源文件数量
foreach (string assetPath in abi.assetList)
{
writer.Write(MD5Util.GetMD5(assetPath.Replace(resInputPath, "")).ToCharArray()); // 写入资源文件的路径MD5
}
string[] depList = manifest.GetAllDependencies(abPath);
writer.Write((byte)depList.Length); // 写入依赖的ab文件数量（一字节）
foreach (string depPath in depList)
{
writer.Write(MD5Util.GetMD5(depPath).ToCharArray()); // 写入ab文件的路径MD5
}
}
ab.Unload(true);
}
else
{
writer.Write(resBytes);
}
}
if (updateType == UpdateResInfoType.ALL)
{
UnityEngine.Debug.Log("[Packager] Generates ResInfo Completed.");
}
else
{
UnityEngine.Debug.Log("[Packager] Update ResInfo Completed!");
}
}