[skip ci] 优化

app/src/main/java/io/legado/app/model/localBook/LocalBook.kt

@@ -290,7 +290,8 @@ object LocalBook {
         inputStream: InputStream,
         fileName: String
     ): Uri {
-        if (inputStream.isEmpty()) throw EmptyFileException("Unexpected empty inputStream")
+        inputStream.use {
+            if (it.isEmpty()) throw EmptyFileException("Unexpected empty inputStream")
             val defaultBookTreeUri = AppConfig.defaultBookTreeUri
             if (defaultBookTreeUri.isNullOrBlank()) throw NoStackTraceException("没有设置书籍保存位置!")
             val treeUri = Uri.parse(defaultBookTreeUri)
@@ -302,18 +303,19 @@ object LocalBook {
                         ?: throw SecurityException("请重新设置书籍保存位置\nPermission Denial")
                 }
                 appCtx.contentResolver.openOutputStream(doc.uri)!!.use { oStream ->
-                inputStream.copyTo(oStream)
+                    it.copyTo(oStream)
                 }
                 doc.uri
             } else {
                 val treeFile = File(treeUri.path!!)
                 val file = treeFile.getFile(fileName)
                 FileOutputStream(file).use { oStream ->
-                inputStream.copyTo(oStream)
+                    it.copyTo(oStream)
                 }
                 Uri.fromFile(file)
             }
         }
+    }
 
     fun isOnBookShelf(
         fileName: String

app/src/main/java/io/legado/app/ui/book/info/BookInfoViewModel.kt

@@ -17,7 +17,6 @@ import io.legado.app.data.entities.Book
 import io.legado.app.data.entities.BookChapter
 import io.legado.app.data.entities.BookSource
 import io.legado.app.exception.NoStackTraceException
-import io.legado.app.exception.EmptyFileException
 import io.legado.app.help.AppWebDav
 import io.legado.app.help.book.*
 import io.legado.app.help.coroutine.Coroutine