From cc9e730ccce408dee606caa1d5f726eb3c683193 Mon Sep 17 00:00:00 2001
From: Bet4 <16643669+bet4it@users.noreply.github.com>
Date: Sat, 25 Aug 2018 11:20:10 +0800
Subject: [PATCH] Convert filename to UTF-8

---
 .travis.yml              |  1 +
 CMakeLists.txt           |  1 +
 src/core/FatFilename.cpp | 39 ++++++++++++++++-----------------------
 3 files changed, 18 insertions(+), 23 deletions(-)

diff --git a/.travis.yml b/.travis.yml
index ea5f5b9..31a9fa9 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,3 +1,4 @@
+dist: xenial
 language: cpp
 
 compiler:
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2e8fc3b..7853455 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,6 +1,7 @@
 cmake_minimum_required(VERSION 2.8)
 project(fatcat)
 
+set(CMAKE_CXX_STANDARD 11)
 set(SOURCES
     core/FatEntry.cpp
     core/FatFilename.cpp
diff --git a/src/core/FatFilename.cpp b/src/core/FatFilename.cpp
index 1f62511..e765a37 100644
--- a/src/core/FatFilename.cpp
+++ b/src/core/FatFilename.cpp
@@ -1,5 +1,7 @@
 #include <string>
 #include <iostream>
+#include <locale>
+#include <codecvt>
 #include "FatFilename.h"
 #include "FatEntry.h"
 
@@ -7,22 +9,21 @@ using namespace std;
 
 #define FAT_LONG_NAME_LAST      0x40
 
-// Offset of letters position in a special "long file name" entry
-static unsigned char longFilePos[] = {
-    30, 28, 24, 22, 20, 18, 16, 14, 9, 7, 5, 3, 1
-};
-
 string FatFilename::getFilename()
 {
-    string rfilename;
-    vector<string>::iterator it;
+    string filename;
+    vector<string>::reverse_iterator it;
+    wstring_convert<std::codecvt_utf8_utf16<char16_t>,char16_t> convert;
 
-    for (it=letters.begin(); it!=letters.end(); it++) {
-        rfilename += *it;
+    for (it=letters.rbegin(); it!=letters.rend(); it++) {
+        filename += *it;
     }
     letters.clear();
 
-    return string(rfilename.rbegin(), rfilename.rend());
+    if (!filename.length()) {
+        return {};
+    }
+    return convert.to_bytes((char16_t *)filename.c_str());
 }
 
 void FatFilename::append(char *buffer)
@@ -35,18 +36,10 @@ void FatFilename::append(char *buffer)
         letters.clear();
     }
 
-    int i;
-    for (i=0; i<sizeof(longFilePos); i++) {
-        unsigned char c = buffer[longFilePos[i]];
-        unsigned char d = buffer[longFilePos[i]+1];
-        if (c != 0 && c != 0xff) {
-            string letter;
-            if (d != 0x00) {
-                letter += d;
-            }
-            letter += c;
-            letters.push_back(letter);
-        }
-    }
+    string letter;
+    letter.append(buffer + 1, 5 * 2);
+    letter.append(buffer + 14, 6 * 2);
+    letter.append(buffer + 28, 2 * 2);
+    letters.push_back(letter);
 }