1 files changed, 12 insertions, 8 deletions
diff --git a/src/streams.h b/src/streams.h
index 57fc600646..e9f3562c6c 100644
--- a/src/streams.h
+++ b/src/streams.h
@@ -161,7 +161,7 @@ public:
     typedef vector_type::const_iterator   const_iterator;
     typedef vector_type::reverse_iterator reverse_iterator;
 
-    explicit DataStream() {}
+    explicit DataStream() = default;
     explicit DataStream(Span<const uint8_t> sp) : DataStream{AsBytes(sp)} {}
     explicit DataStream(Span<const value_type> sp) : vch(sp.data(), sp.data() + sp.size()) {}
 
@@ -390,9 +390,10 @@ class AutoFile
 protected:
     std::FILE* m_file;
     std::vector<std::byte> m_xor;
+    std::optional<int64_t> m_position;
 
 public:
-    explicit AutoFile(std::FILE* file, std::vector<std::byte> data_xor={}) : m_file{file}, m_xor{std::move(data_xor)} {}
+    explicit AutoFile(std::FILE* file, std::vector<std::byte> data_xor={});
 
     ~AutoFile() { fclose(); }
 
@@ -419,12 +420,6 @@ public:
         return ret;
     }
 
-    /** Get wrapped FILE* without transfer of ownership.
-     * @note Ownership of the FILE* will remain with this class. Use this only if the scope of the
-     * AutoFile outlives use of the passed pointer.
-     */
-    std::FILE* Get() const { return m_file; }
-
     /** Return true if the wrapped FILE* is nullptr, false otherwise.
      */
     bool IsNull() const { return m_file == nullptr; }
@@ -435,9 +430,18 @@ public:
     /** Implementation detail, only used internally. */
     std::size_t detail_fread(Span<std::byte> dst);
 
+    /** Wrapper around fseek(). Will throw if seeking is not possible. */
     void seek(int64_t offset, int origin);
+
+    /** Find position within the file. Will throw if unknown. */
     int64_t tell();
 
+    /** Wrapper around FileCommit(). */
+    bool Commit();
+
+    /** Wrapper around TruncateFile(). */
+    bool Truncate(unsigned size);
+
     //
     // Stream subset
     //