Fine tune read interface of CBinaryFile.

1 files changed, 20 insertions, 6 deletions

diff --git a/include/fud_c_file.hpp b/include/fud_c_file.hpp
index b48e8a0..f563a35 100644
--- a/include/fud_c_file.hpp
+++ b/include/fud_c_file.hpp
@@ -80,6 +80,7 @@ constexpr const char* CTextFileModeFromFlags(CFileMode mode)
 enum class FileStatus
 {
     Success,
+    PartialSuccess,
     InvalidName,
     InvalidArgument,
     InvalidState,
@@ -91,6 +92,8 @@ static inline const char* FileStatusToString(FileStatus status) {
     switch (status) {
     case FileStatus::Success:
         return "Success";
+    case FileStatus::PartialSuccess:
+        return "PartialSuccess";
     case FileStatus::InvalidName:
         return "InvalidName";
     case FileStatus::InvalidArgument:
@@ -106,6 +109,11 @@ static inline const char* FileStatusToString(FileStatus status) {
     }
 }
 
+struct [[nodiscard]] ReadResult {
+    size_t bytesRead{0};
+    FileStatus status{FileStatus::Success};
+};
+
 class CBinaryFile {
   public:
     CBinaryFile(const String& filename, CFileMode mode);
@@ -122,15 +130,21 @@ class CBinaryFile {
 
     [[nodiscard]] Result<size_t, FileStatus> size() const;
 
-    template <typename T>
-    [[nodiscard]] FileStatus read(T& destination, size_t length);
+    [[nodiscard]] ReadResult read(void* destination, size_t destinationSize, size_t length);
 
-    template <typename T>
-    [[nodiscard]] FileStatus read(T& destination, size_t length, size_t offset);
+    [[nodiscard]] ReadResult read(void* destination, size_t destinationSize, size_t length, size_t offset);
 
-    [[nodiscard]] FileStatus read(void* destination, size_t destinationSize, size_t length);
+    template <typename T>
+    [[nodiscard]] ReadResult read(T& destination, size_t length)
+    {
+        return read(destination, length, 0);
+    }
 
-    [[nodiscard]] FileStatus read(void* destination, size_t destinationSize, size_t length, size_t offset);
+    template <typename T>
+    [[nodiscard]] ReadResult read(T& destination, size_t length, size_t offset)
+    {
+        return read(&destination, sizeof(destination), length, offset);
+    }
 
   private:
     FileStatus reset() const;