From 69b7675940a2a91d7f736b77b248d3d70a99ec2a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Harabie=C5=84?= <rafalh1992@o2.pl>
Date: Wed, 20 Jun 2018 17:28:46 +0200
Subject: [PATCH] Fix no_std build

---
 src/dir.rs | 4 ++--
 src/fs.rs  | 8 +++-----
 2 files changed, 5 insertions(+), 7 deletions(-)

diff --git a/src/dir.rs b/src/dir.rs
index 13a3b3b..7722a31 100644
--- a/src/dir.rs
+++ b/src/dir.rs
@@ -240,9 +240,9 @@ impl <'a, T: ReadWriteSeek + 'a> Dir<'a, T> {
         // check if directory contains no files
         for r in self.iter() {
             let e = r?;
-            let name = e.file_name();
+            let name = e.short_file_name_bytes();
             // ignore special entries "." and ".."
-            if name != "." && name != ".." {
+            if name != ".".as_bytes() && name != "..".as_bytes() {
                 return Ok(false);
             }
         }
diff --git a/src/fs.rs b/src/fs.rs
index af6f01d..64c82d3 100644
--- a/src/fs.rs
+++ b/src/fs.rs
@@ -1,6 +1,7 @@
 use core::cell::RefCell;
 use core::cmp;
 use core::char;
+use core::iter::FromIterator;
 use io::prelude::*;
 use io::{Error, ErrorKind, SeekFrom};
 use io;
@@ -13,10 +14,7 @@ use dir_entry::DIR_ENTRY_SIZE;
 use table::{ClusterIterator, alloc_cluster, read_fat_flags, count_free_clusters};
 
 #[cfg(all(not(feature = "std"), feature = "alloc"))]
-use alloc::{String, string::ToString};
-#[cfg(all(not(feature = "std"), not(feature = "alloc")))]
-use core::str;
-use core::iter::FromIterator;
+use alloc::String;
 
 // FAT implementation based on:
 //   http://wiki.osdev.org/FAT
@@ -688,5 +686,5 @@ impl <'a, T: ReadWriteSeek> Seek for DiskSlice<'a, T> {
 }
 
 pub(crate) fn decode_oem_char_lossy(oem_char: u8) -> char {
-    if oem_char < 0x80 { oem_char as char } else { char::REPLACEMENT_CHARACTER }
+    if oem_char < 0x80 { oem_char as char } else { '\u{FFFD}' }
 }