1 files changed, 57 insertions, 0 deletions
diff --git a/src/Ryujinx.Graphics.Gpu/Shader/DiskCache/DiskCacheCommon.cs b/src/Ryujinx.Graphics.Gpu/Shader/DiskCache/DiskCacheCommon.cs
new file mode 100644
index 00000000..c8a9f7ff
--- /dev/null
+++ b/src/Ryujinx.Graphics.Gpu/Shader/DiskCache/DiskCacheCommon.cs
@@ -0,0 +1,57 @@
+using Ryujinx.Common.Logging;
+using System.IO;
+
+namespace Ryujinx.Graphics.Gpu.Shader.DiskCache
+{
+    /// <summary>
+    /// Common disk cache utility methods.
+    /// </summary>
+    static class DiskCacheCommon
+    {
+        /// <summary>
+        /// Opens a file for read or write.
+        /// </summary>
+        /// <param name="basePath">Base path of the file (should not include the file name)</param>
+        /// <param name="fileName">Name of the file</param>
+        /// <param name="writable">Indicates if the file will be read or written</param>
+        /// <returns>File stream</returns>
+        public static FileStream OpenFile(string basePath, string fileName, bool writable)
+        {
+            string fullPath = Path.Combine(basePath, fileName);
+
+            FileMode mode;
+            FileAccess access;
+
+            if (writable)
+            {
+                mode = FileMode.OpenOrCreate;
+                access = FileAccess.ReadWrite;
+            }
+            else
+            {
+                mode = FileMode.Open;
+                access = FileAccess.Read;
+            }
+
+            try
+            {
+                return new FileStream(fullPath, mode, access, FileShare.Read);
+            }
+            catch (IOException ioException)
+            {
+                Logger.Error?.Print(LogClass.Gpu, $"Could not access file \"{fullPath}\". {ioException.Message}");
+
+                throw new DiskCacheLoadException(DiskCacheLoadResult.NoAccess);
+            }
+        }
+
+        /// <summary>
+        /// Gets the compression algorithm that should be used when writing the disk cache.
+        /// </summary>
+        /// <returns>Compression algorithm</returns>
+        public static CompressionAlgorithm GetCompressionAlgorithm()
+        {
+            return CompressionAlgorithm.Deflate;
+        }
+    }
+}
+\ No newline at end of file