Handle saved Windows paths on Unix

plugins/common/plugin/SfizzFileScan.cpp

@@ -5,12 +5,14 @@
 // If not, contact the sfizz maintainers at https://github.com/sfztools/sfizz
 
 #include "SfizzFileScan.h"
+#include "utility/Debug.h"
 #include "SfizzForeignPaths.h"
 #include "SfizzSettings.h"
 #include "NativeHelpers.h"
 #include <absl/strings/ascii.h>
 #include <absl/algorithm/container.h>
 #include <memory>
+#include <iostream>
 #if defined(_WIN32)
 #include <windows.h>
 #endif
@@ -34,7 +36,18 @@ bool SfzFileScan::locateRealFile(const fs::path& pathOrig, fs::path& pathFound)
     std::unique_lock<std::mutex> lock { mutex };
     refreshScan();
 
-    auto it = file_index_.find(keyOf(pathOrig.filename()));
+    const auto key = [&] {
+        auto path = pathOrig.string();
+        if (path.size() > 3 && path[1] == ':' && path[2] == '\\') {
+            // Assume an absolute windows path and switch anti-slashes to slashes
+            std::replace(path.begin(), path.end(), '\\', '/');
+            return keyOf(fs::path(path).filename());
+        }
+
+        return keyOf(pathOrig.filename());
+    }();
+
+    auto it = file_index_.find(key);
     if (it == file_index_.end())
         return false;