update: support specifying ignoreCase for file search.

Author: ItzNotABug

dfc/src/main/java/com/lazygeniouz/dfc/file/DocumentFileCompat.kt

@@ -79,13 +79,12 @@ abstract class DocumentFileCompat constructor(
     /**
      * Find a File against the given name.
      *
-     *
      * Do not use this if you are going to call `listFiles()` again on the same
-     * DocumentFileCompat object because this method internally searches same list.
+     * [DocumentFileCompat] object because this method internally searches same list.
      *
      * Multiple calls to `listFiles()` can have a performance hit.
      */
-    abstract fun findFile(name: String): DocumentFileCompat?
+    abstract fun findFile(name: String, ignoreCase: Boolean = false): DocumentFileCompat?
 
     /**
      * Copy a document to a given Uri.

dfc/src/main/java/com/lazygeniouz/dfc/file/internals/RawDocumentFileCompat.kt

@@ -112,7 +112,7 @@ internal class RawDocumentFileCompat constructor(context: Context, var file: Fil
     }
 
     // Return a file if exists, else **null**
-    override fun findFile(name: String): DocumentFileCompat? {
+    override fun findFile(name: String, ignoreCase: Boolean): DocumentFileCompat? {
         return listFiles().firstOrNull { file -> file.name.isNotEmpty() && file.name == name }
     }
 

dfc/src/main/java/com/lazygeniouz/dfc/file/internals/SingleDocumentFileCompat.kt

@@ -63,7 +63,7 @@ internal class SingleDocumentFileCompat(
      *
      * @throws UnsupportedOperationException
      */
-    override fun findFile(name: String): DocumentFileCompat? {
+    override fun findFile(name: String, ignoreCase: Boolean): DocumentFileCompat? {
         throw UnsupportedOperationException()
     }
 

dfc/src/main/java/com/lazygeniouz/dfc/file/internals/TreeDocumentFileCompat.kt

@@ -70,8 +70,10 @@ internal class TreeDocumentFileCompat constructor(
     /**
      * Return a file if exists, else **null**.
      */
-    override fun findFile(name: String): DocumentFileCompat? {
-        return listFiles().firstOrNull { file -> file.name.isNotEmpty() && file.name == name }
+    override fun findFile(name: String, ignoreCase: Boolean): DocumentFileCompat? {
+        return listFiles().firstOrNull { file ->
+            file.name.equals(name, ignoreCase = ignoreCase)
+        }
     }
 
     /**