Sort files properly on Linux & Mac

gframe/myfilesystem.h

@@ -8,6 +8,8 @@
 #ifndef _WIN32
 #include <dirent.h>
 #include <sys/stat.h>
+#include <vector>
+#include <algorithm>
 #endif
 
 #ifdef _WIN32
@@ -109,21 +111,42 @@ public:
 		return MakeDir(dir);
 	}
 
+	struct file_unit {
+		std::string filename;
+		bool is_dir;
+	};
+
 	static void TraversalDir(const char* path, const std::function<void(const char*, bool)>& cb) {
 		DIR* dir = nullptr;
 		struct dirent* dirp = nullptr;
 		if((dir = opendir(path)) == nullptr)
 			return;
 		struct stat fileStat;
-		while((dirp = readdir(dir)) != nullptr) {
+		std::vector<file_unit> file_list;
+		while ((dirp = readdir(dir)) != nullptr)
+		{
+			file_unit funit;
 			char fname[1024];
 			strcpy(fname, path);
 			strcat(fname, "/");
 			strcat(fname, dirp->d_name);
 			stat(fname, &fileStat);
-			cb(dirp->d_name, S_ISDIR(fileStat.st_mode));
+			funit.filename = std::string(dirp->d_name);
+			funit.is_dir = S_ISDIR(fileStat.st_mode);
+			file_list.push_back(funit);
 		}
 		closedir(dir);
+		std::sort(file_list.begin(), file_list.end(), TraversalDirSort);
+		for (file_unit funit : file_list)
+			cb(funit.filename.c_str(), funit.is_dir);
+	}
+
+	static bool TraversalDirSort(file_unit file1, file_unit file2) {
+		if(file1.is_dir != file2.is_dir) {
+			return file1.is_dir;
+		} else {
+			return file1.filename < file2.filename;
+		}
 	}
 
 	static void TraversalDir(const wchar_t* wpath, const std::function<void(const wchar_t*, bool)>& cb) {