Merge branch 'master' into json-converter

osu.Game/IO/OsuStorage.cs

@@ -0,0 +1,26 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using osu.Framework.Logging;
+using osu.Framework.Platform;
+using osu.Game.Configuration;
+
+namespace osu.Game.IO
+{
+    public class OsuStorage : WrappedStorage
+    {
+        public OsuStorage(GameHost host)
+            : base(host.Storage, string.Empty)
+        {
+            var storageConfig = new StorageConfigManager(host.Storage);
+
+            var customStoragePath = storageConfig.Get<string>(StorageConfig.FullPath);
+
+            if (!string.IsNullOrEmpty(customStoragePath))
+            {
+                ChangeTargetStorage(host.GetStorage(customStoragePath));
+                Logger.Storage = UnderlyingStorage.GetStorageForDirectory("logs");
+            }
+        }
+    }
+}

osu.Game/IO/WrappedStorage.cs

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+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System;
+using System.Collections.Generic;
+using System.IO;
+using osu.Framework.Platform;
+
+namespace osu.Game.IO
+{
+    /// <summary>
+    /// A storage which wraps another storage and delegates implementation, potentially mutating the lookup path.
+    /// </summary>
+    public class WrappedStorage : Storage
+    {
+        protected Storage UnderlyingStorage { get; private set; }
+
+        private readonly string subPath;
+
+        public WrappedStorage(Storage underlyingStorage, string subPath = null)
+            : base(string.Empty)
+        {
+            ChangeTargetStorage(underlyingStorage);
+
+            this.subPath = subPath;
+        }
+
+        protected virtual string MutatePath(string path) => !string.IsNullOrEmpty(subPath) ? Path.Combine(subPath, path) : path;
+
+        protected void ChangeTargetStorage(Storage newStorage)
+        {
+            UnderlyingStorage = newStorage;
+        }
+
+        public override string GetFullPath(string path, bool createIfNotExisting = false) =>
+            UnderlyingStorage.GetFullPath(MutatePath(path), createIfNotExisting);
+
+        public override bool Exists(string path) =>
+            UnderlyingStorage.Exists(MutatePath(path));
+
+        public override bool ExistsDirectory(string path) =>
+            UnderlyingStorage.ExistsDirectory(MutatePath(path));
+
+        public override void DeleteDirectory(string path) =>
+            UnderlyingStorage.DeleteDirectory(MutatePath(path));
+
+        public override void Delete(string path) =>
+            UnderlyingStorage.Delete(MutatePath(path));
+
+        public override IEnumerable<string> GetDirectories(string path) =>
+            ToLocalRelative(UnderlyingStorage.GetDirectories(MutatePath(path)));
+
+        public IEnumerable<string> ToLocalRelative(IEnumerable<string> paths)
+        {
+            string localRoot = GetFullPath(string.Empty);
+
+            foreach (var path in paths)
+                yield return Path.GetRelativePath(localRoot, UnderlyingStorage.GetFullPath(path));
+        }
+
+        public override IEnumerable<string> GetFiles(string path, string pattern = "*") =>
+            ToLocalRelative(UnderlyingStorage.GetFiles(MutatePath(path), pattern));
+
+        public override Stream GetStream(string path, FileAccess access = FileAccess.Read, FileMode mode = FileMode.OpenOrCreate) =>
+            UnderlyingStorage.GetStream(MutatePath(path), access, mode);
+
+        public override string GetDatabaseConnectionString(string name) =>
+            UnderlyingStorage.GetDatabaseConnectionString(MutatePath(name));
+
+        public override void DeleteDatabase(string name) => UnderlyingStorage.DeleteDatabase(MutatePath(name));
+
+        public override void OpenInNativeExplorer() => UnderlyingStorage.OpenInNativeExplorer();
+
+        public override Storage GetStorageForDirectory(string path)
+        {
+            if (string.IsNullOrEmpty(path))
+                throw new ArgumentException("Must be non-null and not empty string", nameof(path));
+
+            if (!path.EndsWith(Path.DirectorySeparatorChar))
+                path += Path.DirectorySeparatorChar;
+
+            // create non-existing path.
+            GetFullPath(path, true);
+
+            return new WrappedStorage(this, path);
+        }
+    }
+}