From 15e0c4c4ec112b9f37591ff5791ccca497bb85a0 Mon Sep 17 00:00:00 2001
From: Lioncash <mathew1800@gmail.com>
Date: Thu, 4 Apr 2019 20:48:13 -0400
Subject: [PATCH] filesystem: Use a std::string_view in OpenFile()
Rather than make a full copy of the path, we can just use a string view
and truncate the viewed portion of the string instead of creating a totally
new truncated string.
---
src/core/hle/service/filesystem/filesystem.cpp | 13 ++++++++-----
1 file changed, 8 insertions(+), 5 deletions(-)
diff --git a/src/core/hle/service/filesystem/filesystem.cpp b/src/core/hle/service/filesystem/filesystem.cpp
index c6da2df43..1fbab2789 100644
--- a/src/core/hle/service/filesystem/filesystem.cpp
+++ b/src/core/hle/service/filesystem/filesystem.cpp
@@ -197,13 +197,16 @@ ResultCode VfsDirectoryServiceWrapper::RenameDirectory(const std::string& src_pa
ResultVal<FileSys::VirtualFile> VfsDirectoryServiceWrapper::OpenFile(const std::string& path_,
FileSys::Mode mode) const {
- std::string path(FileUtil::SanitizePath(path_));
- auto npath = path;
- while (npath.size() > 0 && (npath[0] == '/' || npath[0] == '\\'))
- npath = npath.substr(1);
+ const std::string path(FileUtil::SanitizePath(path_));
+ std::string_view npath = path;
+ while (!npath.empty() && (npath[0] == '/' || npath[0] == '\\')) {
+ npath.remove_prefix(1);
+ }
+
auto file = backing->GetFileRelative(npath);
- if (file == nullptr)
+ if (file == nullptr) {
return FileSys::ERROR_PATH_NOT_FOUND;
+ }
if (mode == FileSys::Mode::Append) {
return MakeResult<FileSys::VirtualFile>(