Merge pull request #435 from ltGuillaume/master

Working EXIF lossless on Internal & SD

app/src/main/kotlin/com/simplemobiletools/gallery/activities/ViewPagerActivity.kt

@@ -46,8 +46,9 @@ import com.simplemobiletools.gallery.models.Medium
 import kotlinx.android.synthetic.main.activity_medium.*
 import java.io.File
 import java.io.FileInputStream
-import java.io.FileNotFoundException
 import java.io.FileOutputStream
+import java.io.InputStream
+import java.io.OutputStream
 import java.util.*
 
 class ViewPagerActivity : SimpleActivity(), ViewPager.OnPageChangeListener, ViewPagerFragment.FragmentListener {
@@ -454,53 +455,56 @@ class ViewPagerActivity : SimpleActivity(), ViewPager.OnPageChangeListener, View
         SaveAsDialog(this, currPath, false) {
             Thread({
                 toast(R.string.saving)
-                if (it.isJpg() && !isPathOnSD(it)) {
+                val selectedFile = File(it)
-                    if (it == currPath) {
+                val tmpFile = File(filesDir, ".tmp_${it.getFilenameFromPath()}")
-                        rotateFileByExif(it)
-                        runOnUiThread {
-                            (getCurrentFragment() as? PhotoFragment)?.refreshBitmap()
-                        }
-                    } else {
-                        copyFile(currPath, it)
-                        rotateFileByExif(it)
-                    }
-                } else {
-                    rotateFileByDegrees(currPath, it)
-                }
-            }).start()
-        }
-    }
-
-    private fun rotateFileByDegrees(sourcePath: String, destinationPath: String) {
-        val tmpFile = File(File(destinationPath).parent, ".tmp_${destinationPath.getFilenameFromPath()}")
                 try {
+                    val bitmap = BitmapFactory.decodeFile(currPath)
                     getFileOutputStream(tmpFile) {
                         if (it == null) {
                             toast(R.string.unknown_error_occurred)
                             return@getFileOutputStream
                         }
 
-                val bitmap = BitmapFactory.decodeFile(sourcePath)
+                        if (currPath.isJpg()) {
+                            saveRotation(getCurrentFile(), tmpFile)
+                        } else {
                             saveFile(tmpFile, bitmap, it as FileOutputStream)
-                it.flush()
-                it.close()
-
-                val destination = File(destinationPath)
-                deleteFile(destination) {
-                    renameFile(tmpFile, destination) {}
                         }
 
+                        if (tmpFile.length() > 0 && selectedFile.exists()) {
+                            deleteFile(selectedFile) {}
+                        }
+                        copyFile(tmpFile, selectedFile)
+                        scanPath(selectedFile.absolutePath) {}
                         toast(R.string.file_saved)
+
+                        it.flush()
+                        it.close()
                         mRotationDegrees = 0f
                         invalidateOptionsMenu()
                     }
                 } catch (e: OutOfMemoryError) {
                     toast(R.string.out_of_memory_error)
-            deleteFile(tmpFile) {}
                 } catch (e: Exception) {
                     showErrorToast(e)
+                } finally {
                     deleteFile(tmpFile) {}
                 }
+            }).start()
+        }
+    }
+
+    private fun copyFile(source: File, destination: File) {
+        var inputStream: InputStream? = null
+        var out: OutputStream? = null
+        try {
+            out = getFileOutputStreamSync(destination.absolutePath, source.getMimeType(), getFileDocument(destination.parent))
+            inputStream = FileInputStream(source)
+            inputStream.copyTo(out!!)
+        } finally {
+            inputStream?.close()
+            out?.close()
+        }
     }
 
     private fun saveFile(file: File, bitmap: Bitmap, out: FileOutputStream) {
@@ -510,34 +514,13 @@ class ViewPagerActivity : SimpleActivity(), ViewPager.OnPageChangeListener, View
         bmp.compress(file.getCompressionFormat(), 90, out)
     }
 
-    private fun copyFile(sourcePath: String, destinationPath: String) {
+    private fun saveRotation(input: File, output: File) {
-        var inputStream: FileInputStream? = null
+        copyFile(input, output)
-        var outputStream: FileOutputStream? = null
+        val exif = ExifInterface(output.absolutePath)
-        try {
-            inputStream = FileInputStream(sourcePath)
-            outputStream = FileOutputStream(destinationPath)
-            inputStream.copyTo(outputStream)
-            scanPath(destinationPath) {}
-        } catch (ignored: FileNotFoundException) {
-        } finally {
-            inputStream?.close()
-            outputStream?.close()
-        }
-    }
-
-    private fun rotateFileByExif(path: String) {
-        val exif = ExifInterface(path)
         val orientation = exif.getAttributeInt(ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_NORMAL)
         val orientationDegrees = (degreesForRotation(orientation) + mRotationDegrees) % 360
         exif.setAttribute(ExifInterface.TAG_ORIENTATION, rotationFromDegrees(orientationDegrees))
         exif.saveAttributes()
-        if (!config.keepLastModified) {
-            File(getCurrentPath()).setLastModified(System.currentTimeMillis())
-        }
-
-        mRotationDegrees = 0f
-        invalidateOptionsMenu()
-        toast(R.string.file_saved)
     }
 
     private fun degreesForRotation(orientation: Int) = when (orientation) {