2 files changed, 22 insertions, 16 deletions

diff --git a/app/src/main/java/org/pacien/tincapp/storageprovider/FilesDocumentsProvider.kt b/app/src/main/java/org/pacien/tincapp/storageprovider/FilesDocumentsProvider.kt
index 688ae27..48d0319 100644
--- a/app/src/main/java/org/pacien/tincapp/storageprovider/FilesDocumentsProvider.kt
+++ b/app/src/main/java/org/pacien/tincapp/storageprovider/FilesDocumentsProvider.kt
@@ -31,6 +31,8 @@ import android.provider.DocumentsProvider
 import androidx.annotation.RequiresApi
 import org.pacien.tincapp.R
 import org.pacien.tincapp.context.AppPaths
+import org.pacien.tincapp.utils.isParentOf
+import org.pacien.tincapp.utils.pathUnder
 import java.io.File
 import java.io.FileNotFoundException
 import kotlin.io.path.Path
@@ -178,22 +180,6 @@ class FilesDocumentsProvider : DocumentsProvider() {
       throw IllegalArgumentException()
     }
 
-  private fun File.pathUnder(parent: File): String =
-    canonicalPath.removePrefix(parent.canonicalPath)
-
-  private fun File.isParentOf(childCandidate: File, strict: Boolean = true): Boolean {
-    var parentOfChild = childCandidate.canonicalFile
-
-    if (strict)
-      parentOfChild = parentOfChild.parentFile
-
-    while (parentOfChild != null) {
-      if (parentOfChild.equals(canonicalFile)) return true
-      parentOfChild = parentOfChild.parentFile
-    }
-    return false
-  }
-
   private fun File.documentMimeType() =
     if (isDirectory) Document.MIME_TYPE_DIR
     else "text/plain"
diff --git a/app/src/main/java/org/pacien/tincapp/utils/Files.kt b/app/src/main/java/org/pacien/tincapp/utils/Files.kt
index cfa16b8..8eda328 100644
--- a/app/src/main/java/org/pacien/tincapp/utils/Files.kt
+++ b/app/src/main/java/org/pacien/tincapp/utils/Files.kt
@@ -45,3 +45,23 @@ fun File.makePublic() {
     for (file in this.listFiles()!!)
       file.makePublic()
 }
+
+fun File.isParentOf(childCandidate: File, strict: Boolean = true): Boolean {
+  var parentOfChild = childCandidate.canonicalFile
+
+  if (strict)
+    parentOfChild = parentOfChild.parentFile
+
+  while (parentOfChild != null) {
+    if (parentOfChild.equals(canonicalFile)) return true
+    parentOfChild = parentOfChild.parentFile
+  }
+  return false
+}
+
+fun File.pathUnder(parent: File): String {
+  if (!parent.isParentOf(this, false))
+    throw IllegalArgumentException("File is not under the given parent.")
+
+  return canonicalPath.removePrefix(parent.canonicalPath)
+}