Simplify stream function

lib/file.cpp

@@ -8,18 +8,20 @@ namespace tmp {
 namespace {
 
 /// Opens a temporary file for writing and returns an output file stream
-/// @param file The file to open
-/// @param binary Whether to open the file in binary mode (true) or text mode (false)
-/// @param append Whether to append to the end of the file (true) or truncate it (false)
+/// @param file     The file to open
+/// @param binary   Whether to open the file in binary mode
+/// @param append   Whether to append to the end of the file
 /// @return An output file stream
 std::ofstream stream(const file& file, bool binary, bool append) noexcept {
     std::ios::openmode mode = append ? std::ios::app : std::ios::trunc;
-    auto path = static_cast<const std::filesystem::path&>(file);
-    return binary
-           ? std::ofstream { path, mode | std::ios::binary }
-           : std::ofstream { path, mode };
-}
+    if (binary) {
+        mode |= std::ios::binary;
+    }
+
+    const std::filesystem::path& path = file;
+    return std::ofstream { path, mode };
 }
+}    // namespace
 
 file::file(std::string_view prefix) : file(prefix, /*binary=*/true) {
 }

lib/path.cpp

@@ -14,7 +14,6 @@ void remove(const tmp::path& path) noexcept {
         std::filesystem::remove_all(path, ec);
     }
 }
-
 }    // namespace
 
 namespace tmp {