Fluorine Manager: full Linux port of Mod Organizer 2

Complete native Linux port with FUSE-based virtual filesystem,
Proton/umu-run integration, and Flatpak packaging.

Key features:
- FUSE VFS replacing Windows USVFS (in-process + standalone helper for Flatpak)
- Proton/GE-Proton/umu-run launcher with env var forwarding
- Flatpak support (sandbox-aware VFS, NXM handler, umu-run)
- Wine prefix management UI
- Case-insensitive path resolution for Linux filesystems
- QSettings-safe INI handling (avoids Bethesda INI corruption)
- Portable instance support with auto-generated launcher scripts

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

1 files changed, 57 insertions, 0 deletions

diff --git a/libs/usvfs/src/shared/stringutils.h b/libs/usvfs/src/shared/stringutils.h
new file mode 100644
index 0000000..64d0af7
--- /dev/null
+++ b/libs/usvfs/src/shared/stringutils.h
@@ -0,0 +1,57 @@
+/*
+Userspace Virtual Filesystem
+
+Copyright (C) 2015 Sebastian Herbord. All rights reserved.
+
+This file is part of usvfs.
+
+usvfs is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+usvfs is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with usvfs. If not, see <http://www.gnu.org/licenses/>.
+*/
+#pragma once
+
+namespace usvfs::shared
+{
+
+void strncpy_sz(char* dest, const char* src, size_t destSize);
+void wcsncpy_sz(wchar_t* dest, const wchar_t* src, size_t destSize);
+
+bool startswith(const wchar_t* string, const wchar_t* subString);
+
+// Return path when appended to a_From will resolve to same as a_To
+fs::path make_relative(const fs::path& from, const fs::path& to);
+
+std::string to_hex(void* bufferIn, size_t bufferSize);
+
+// convert unicode string to upper-case (locale invariant)
+std::wstring to_upper(const std::wstring& input);
+
+// formats a number with thousand separators and B at the end
+//
+std::string byte_string(std::size_t n);
+
+class FormatGuard
+{
+  std::ostream& m_Stream;
+  std::ios::fmtflags m_Flags;
+
+public:
+  FormatGuard(std::ostream& stream) : m_Stream(stream), m_Flags(stream.flags()) {}
+
+  ~FormatGuard() { m_Stream.flags(m_Flags); }
+
+  FormatGuard(const FormatGuard&)      = delete;
+  FormatGuard& operator=(FormatGuard&) = delete;
+};
+
+}  // namespace usvfs::shared