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, 146 insertions, 0 deletions

diff --git a/libs/usvfs/src/shared/stringutils.cpp b/libs/usvfs/src/shared/stringutils.cpp
new file mode 100644
index 0000000..2ddbf64
--- /dev/null
+++ b/libs/usvfs/src/shared/stringutils.cpp
@@ -0,0 +1,146 @@
+/*
+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/>.
+*/
+#include "stringutils.h"
+#include "windows_sane.h"
+
+namespace usvfs::shared
+{
+
+void strncpy_sz(char* dest, const char* src, size_t destSize)
+{
+  if (destSize > 0) {
+    strncpy(dest, src, destSize - 1);
+    dest[destSize - 1] = '\0';
+  }
+}
+
+void wcsncpy_sz(wchar_t* dest, const wchar_t* src, size_t destSize)
+{
+  if ((destSize > 0) && (dest != nullptr)) {
+    wcsncpy(dest, src, destSize - 1);
+    dest[destSize - 1] = L'\0';
+  }
+}
+
+bool startswith(const wchar_t* string, const wchar_t* subString)
+{
+  while ((*string != '\0') && (*subString != '\0')) {
+    if (towlower(*string) != towlower(*subString)) {
+      return false;
+    }
+    ++string;
+    ++subString;
+  }
+
+  return *subString == '\0';
+}
+
+static fs::path normalize(const fs::path& path)
+{
+  fs::path result;
+
+  boost::locale::generator gen;
+  auto loc = gen("en_US.UTF-8");
+  for (fs::path::iterator iter = path.begin(); iter != path.end(); ++iter) {
+    if (*iter == "..") {
+      result = result.parent_path();
+    } else if (*iter != ".") {
+      result /= boost::to_lower_copy(iter->string(), loc);
+    }  // single dot is ignored
+  }
+  return result;
+}
+
+fs::path make_relative(const fs::path& fromIn, const fs::path& toIn)
+{
+  // converting path to lower case to make iterator comparison work correctly
+  // on case-insenstive filesystems
+  fs::path from(fs::absolute(fromIn));
+  fs::path to(fs::absolute(toIn));
+
+  // find common base
+  fs::path::const_iterator fromIter(from.begin());
+  fs::path::const_iterator toIter(to.begin());
+
+  // TODO the following equivalent test is probably quite expensive as new
+  // paths are created for each iteration but the case sensitivity depends on
+  // the fs
+  while ((fromIter != from.end()) && (toIter != to.end()) &&
+         (boost::iequals(fromIter->string(), toIter->string()))) {
+    ++fromIter;
+    ++toIter;
+  }
+
+  // Navigate backwards in directory to reach previously found base
+  fs::path result;
+  for (; fromIter != from.end(); ++fromIter) {
+    if (*fromIter != ".") {
+      result /= "..";
+    }
+  }
+
+  // Now navigate down the directory branch
+  for (; toIter != to.end(); ++toIter) {
+    result /= *toIter;
+  }
+  return result;
+}
+
+std::string to_hex(void* bufferIn, size_t bufferSize)
+{
+  unsigned char* buffer = static_cast<unsigned char*>(bufferIn);
+  std::ostringstream temp;
+  temp << std::hex;
+  for (size_t i = 0; i < bufferSize; ++i) {
+    temp << std::setfill('0') << std::setw(2) << (unsigned int)buffer[i];
+    if ((i % 16) == 15) {
+      temp << "\n";
+    } else {
+      temp << " ";
+    }
+  }
+  return temp.str();
+}
+
+std::wstring to_upper(const std::wstring& input)
+{
+  std::wstring result;
+  result.resize(input.size());
+  ::LCMapStringW(LOCALE_INVARIANT, LCMAP_UPPERCASE, input.c_str(),
+                 static_cast<int>(input.size()), &result[0],
+                 static_cast<int>(result.size()));
+  return result;
+}
+
+std::string byte_string(std::size_t n)
+{
+  auto s = std::to_string(n);
+  auto p = s.size();
+
+  while (p > 3) {
+    p -= 3;
+    s.insert(p, 1, ',');
+  }
+
+  return s + " B";
+}
+
+}  // namespace usvfs::shared