Normalize backward slashes in preferences file

Added logic to replace backward slashes with forward slashes in the preferences file to ensure consistent path formatting. Updated tests to verify the normalization behavior.

Author: Stefterv

app/src/processing/app/Preferences.kt

@@ -87,6 +87,14 @@ fun PreferencesProvider(content: @Composable () -> Unit) {
         preferencesFile.createNewFile()
     }
 
+    remember {
+        // check if the file has backward slashes
+        if (preferencesFile.readText().contains("\\")) {
+            val correctedText = preferencesFile.readText().replace("\\", "/")
+            preferencesFile.writeText(correctedText)
+        }
+    }
+
     val update = watchFile(preferencesFile)
 
 

app/test/processing/app/PreferencesKtTest.kt

@@ -5,7 +5,7 @@ import androidx.compose.material.Text
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.platform.testTag
 import androidx.compose.ui.test.*
-import java.util.Properties
+import java.util.*
 import kotlin.io.path.createFile
 import kotlin.io.path.createTempDirectory
 import kotlin.test.Test
@@ -58,4 +58,31 @@ class PreferencesKtTest{
 
         onNodeWithTag("text").assertTextEquals(nextValue)
     }
+
+    @OptIn(ExperimentalTestApi::class)
+    @Test
+    fun testWithBackwardSlashes() = runComposeUiTest {
+        val directory = createTempDirectory("preferences")
+        val tempPreferences = directory
+            .resolve("preferences.txt")
+            .createFile()
+            .toFile()
+
+        System.setProperty("processing.app.preferences.file", tempPreferences.absolutePath)
+        System.setProperty("processing.app.preferences.debounce", "0")
+        System.setProperty("processing.app.watchfile.forced", "true")
+        val testKey = "test.preferences.backward.slash"
+
+        val value = "C:\\Users\\Test\\Documents"
+        tempPreferences.writeText("$testKey=$value")
+
+        setContent {
+            PreferencesProvider {
+                val preferences = LocalPreferences.current
+                Text(preferences[testKey] ?: "default", modifier = Modifier.testTag("text"))
+            }
+        }
+
+        onNodeWithTag("text").assertTextEquals(value.replace("\\", "/"))
+    }
 }