reorganize code to prepare for windows support

Author: DanielRBaird

SQLiter/build.gradle

@@ -95,10 +95,14 @@ kotlin {
         nativeCommonMain { }
         nativeCommonTest { }
 
-        configure([iosX64Main, iosArm64Main, macosMain, iosArm32Main]) {
+        appleMain {
             dependsOn nativeCommonMain
         }
 
+        configure([iosX64Main, iosArm64Main, macosMain, iosArm32Main]) {
+            dependsOn appleMain
+        }
+
         configure([iosX64Test, iosArm64Test, macosTest, iosArm32Test]) {
             dependsOn nativeCommonTest
         }

SQLiter/src/nativeCommonMain/kotlin/co/touchlab/sqliter/NativeFileContext.kt renamed to SQLiter/src/appleMain/kotlin/co/touchlab/sqliter/DatabaseFileContext.kt

@@ -15,7 +15,6 @@
  */
 
 package co.touchlab.sqliter
-
 import co.touchlab.sqliter.internal.File
 import co.touchlab.sqliter.internal.FileFilter
 import platform.Foundation.NSApplicationSupportDirectory

SQLiter/src/nativeCommonMain/kotlin/co/touchlab/sqliter/internal/File.kt renamed to SQLiter/src/appleMain/kotlin/co/touchlab/sqliter/internal/File.kt

@@ -14,17 +14,18 @@
  * limitations under the License.
  */
 
+
 package co.touchlab.sqliter
 
 import co.touchlab.sqliter.concurrency.ConcurrentDatabaseConnection
 import co.touchlab.sqliter.concurrency.SingleThreadDatabaseConnection
-import platform.Foundation.NSLock
+import co.touchlab.stately.concurrency.Lock
 import kotlin.native.concurrent.AtomicInt
 import kotlin.native.concurrent.freeze
 
 class NativeDatabaseManager(private val path:String,
                             override val configuration: DatabaseConfiguration
-                            ):DatabaseManager{
+):DatabaseManager{
     override fun createMultiThreadedConnection(): DatabaseConnection {
         return ConcurrentDatabaseConnection(createConnection()).freeze()
     }
@@ -33,7 +34,7 @@ class NativeDatabaseManager(private val path:String,
         return SingleThreadDatabaseConnection(createConnection())
     }
 
-    val lock = NSLock()
+    val lock = Lock()
 
     companion object {
         val CREATE_IF_NECESSARY = 0x10000000
@@ -58,13 +59,23 @@ class NativeDatabaseManager(private val path:String,
 
             if(connectionCount.value == 0){
                 conn.updateJournalMode(configuration.journalMode)
-                conn.migrateIfNeeded(configuration.create, configuration.upgrade, configuration.version)
+
+                try {
+                    conn.migrateIfNeeded(configuration.create, configuration.upgrade, configuration.version)
+                } catch (e: Exception) {
+
+                    // If this failed, we have to close the connection or we will end up leaking it.
+                    println("attempted to run migration and failed. closing connection.")
+                    conn.close()
+                    throw e
+                }
             }
 
+            connectionCount.increment()
+
             return conn
         }
         finally {
-            connectionCount.increment()
             lock.unlock()
         }
     }