文件复制添加 overwrite 参数

lulululbj · Jul 26, 2019 · 764e5b3 · 764e5b3
1 parent ac8bb08
commit 764e5b3
Show file tree

Hide file tree

Showing 3 changed files with 18 additions and 10 deletions.
diff --git a/app/src/main/java/luyao/box/FileExt.kt b/app/src/main/java/luyao/box/FileExt.kt
@@ -44,13 +44,12 @@ fun File.moveTo(destFile: File, override: Boolean, reserve: Boolean): Boolean {
 /**
  *   [destFolder] dest folder
  *   [override] whether to override dest file/folder if exist
- *   [reserve] Whether to reserve source file/folder
  *   [func] progress callback (from 0 to 100)
  */
-fun File.moveToWithProgress(destFolder: File, override: Boolean, reserve: Boolean, func: (file:File,i: Int) -> Unit) {
+fun File.moveToWithProgress(destFolder: File, overwrite: Boolean, func: (file:File,i: Int) -> Unit) {
 
-    if (isDirectory) copyFolder(this, File(destFolder,name), func)
-    else copyFile(this, File(destFolder,name), func)
+    if (isDirectory) copyFolder(this, File(destFolder,name),overwrite, func)
+    else copyFile(this, File(destFolder,name),overwrite, func)
 }
 
 

diff --git a/app/src/main/java/luyao/box/FileUtils.kt b/app/src/main/java/luyao/box/FileUtils.kt
@@ -10,9 +10,18 @@ import java.nio.ByteBuffer
  * on 2019/7/23 9:29
  */
 
-fun copyFile(sourceFile: File, destFile: File, func: (file: File, i: Int) -> Unit) {
+fun copyFile(sourceFile: File, destFile: File, overwrite: Boolean, func: (file: File, i: Int) -> Unit) {
 
     if (!sourceFile.exists()) return
+
+    if (destFile.exists()) {
+        val stillExists = if (!overwrite) true else !destFile.delete()
+
+        if (stillExists) {
+           return
+        }
+    }
+
     if (!destFile.exists()) destFile.createNewFile()
 
     val inputStream = FileInputStream(sourceFile)
@@ -44,7 +53,7 @@ fun copyFile(sourceFile: File, destFile: File, func: (file: File, i: Int) -> Uni
     outputStream.close()
 }
 
-fun copyFolder(sourceFolder: File, destFolder: File, func: (file: File, i: Int) -> Unit) {
+fun copyFolder(sourceFolder: File, destFolder: File, overwrite: Boolean, func: (file: File, i: Int) -> Unit) {
     if (!sourceFolder.exists()) return
 
     if (!destFolder.exists()) {
@@ -54,17 +63,17 @@ fun copyFolder(sourceFolder: File, destFolder: File, func: (file: File, i: Int)
 
     for (subFile in sourceFolder.listFiles()) {
         if (subFile.isDirectory) {
-            copyFolder(subFile, File("${destFolder.path}${File.separator}${subFile.name}"), func)
+            copyFolder(subFile, File("${destFolder.path}${File.separator}${subFile.name}"), overwrite, func)
         } else {
-            copyFile(subFile, File(destFolder, subFile.name), func)
+            copyFile(subFile, File(destFolder, subFile.name), overwrite, func)
         }
     }
 }
 
 fun main() {
     val sourceFile = File("D://src.zip")
     val destFile = File("D://src2.zip")
-    copyFile(sourceFile, destFile) { _, progress ->
+    copyFile(sourceFile, destFile, true) { _, progress ->
         run {
             println(progress.toString())
         }

diff --git a/app/src/main/java/luyao/box/ui/file/FileViewModel.kt b/app/src/main/java/luyao/box/ui/file/FileViewModel.kt
@@ -32,7 +32,7 @@ class FileViewModel : BaseViewModel() {
     fun pasteAsync(fileList: List<IFile>, destFolder: File, reserved: Boolean) {
         CoroutineScope(Dispatchers.IO).launch {
             for (file in fileList) {
-                file.getFile().moveToWithProgress(destFolder, true, reserved) { file, progress ->
+                file.getFile().moveToWithProgress(destFolder, true) { file, progress ->
                     launchOnUITryCatch({
                         mCurrentFileName.value = file.name
                         mProgress.value = progress