From f1773d5efbc67a7d2a7f803b138bcdfaa0791c74 Mon Sep 17 00:00:00 2001
From: Christian Biesinger <cbiesinger@chromium.org>
Date: Thu, 2 May 2019 13:13:38 -0500
Subject: [PATCH] Make FileCache work on non-Windows platforms (#79)

---
 server/JsDbg.Core/DllImports.cs     | 19 +++++++++++++++++++
 server/JsDbg.Core/FileCache.cs      |  9 +++++++--
 server/JsDbg.Core/JsDbg.Core.csproj |  1 +
 3 files changed, 27 insertions(+), 2 deletions(-)
 create mode 100644 server/JsDbg.Core/DllImports.cs

diff --git a/server/JsDbg.Core/DllImports.cs b/server/JsDbg.Core/DllImports.cs
new file mode 100644
index 00000000..220015a0
--- /dev/null
+++ b/server/JsDbg.Core/DllImports.cs
@@ -0,0 +1,19 @@
+//--------------------------------------------------------------
+//
+//    MIT License
+//
+//    Copyright (c) Microsoft Corporation. All rights reserved.
+//
+//--------------------------------------------------------------
+
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Runtime.InteropServices;
+
+namespace JsDbg.Core {
+    internal class DllImports {
+        [DllImport("shlwapi.dll")]
+        internal static extern bool PathIsNetworkPath(string path);
+    }
+}
diff --git a/server/JsDbg.Core/FileCache.cs b/server/JsDbg.Core/FileCache.cs
index 4196a4ac..23de013a 100644
--- a/server/JsDbg.Core/FileCache.cs
+++ b/server/JsDbg.Core/FileCache.cs
@@ -18,8 +18,13 @@ internal FileCache() {
             this.lastFlushDate = DateTime.Now;
         }
 
-        [DllImport("shlwapi.dll")]
-        internal static extern bool PathIsNetworkPath(string path);
+        internal static bool PathIsNetworkPath(string path) {
+            try {
+                return DllImports.PathIsNetworkPath(path);
+            } catch (DllNotFoundException) {
+                return false;
+            }
+        }
 
         internal Stream ReadFile(string path) {
             // Flush the cache every hour for the scenario where JsDbg is left open overnight etc.
diff --git a/server/JsDbg.Core/JsDbg.Core.csproj b/server/JsDbg.Core/JsDbg.Core.csproj
index 9e74c927..7fad9db4 100644
--- a/server/JsDbg.Core/JsDbg.Core.csproj
+++ b/server/JsDbg.Core/JsDbg.Core.csproj
@@ -79,6 +79,7 @@
     <Compile Include="PersistentStore.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
     <Compile Include="WebServer.cs" />
+    <Compile Include="DllImports.cs" />
   </ItemGroup>
   <ItemGroup>
     <None Include="packages.config" />