添加批量换源

app/src/main/java/io/legado/app/ui/book/arrange/ArrangeBookViewModel.kt

@@ -45,6 +45,7 @@ class ArrangeBookViewModel(application: Application) : BaseViewModel(application
             books.forEachIndexed { index, book ->
                 batchChangeSourcePosition.value = index + 1
                 if (book.isLocalBook()) return@forEachIndexed
+                if (book.origin == source.bookSourceUrl) return@forEachIndexed
                 WebBook.preciseSearchAwait(this, book.name, book.author, source)?.let {
                     book.changeTo(it.second)
                 }