Add support for BinaryReader slices

binaryninjaapi.h

@@ -9006,6 +9006,8 @@ namespace BinaryNinja {
 		Ref<BinaryView> m_view;
 		BNBinaryReader* m_stream;
 
+		BinaryReader(Ref<BinaryView> data, BNBinaryReader* stream);
+
 	  public:
 		/*! Create a BinaryReader instance given a BinaryView and endianness.
 
@@ -9311,6 +9313,15 @@ namespace BinaryNinja {
 
 		*/
 		bool IsEndOfFile() const;
+
+		/*! Create a new reader that represents a bounded slice of this reader
+
+			\param offset The start offset for the new slice
+			\param length The length of the new slice
+
+			\return A new reader representing this slice
+		*/
+		BinaryReader Slice(uint64_t offset, size_t length) const;
 	};
 
 	/*! Raised whenever a write is performed out of bounds.

binaryninjacore.h

@@ -5649,6 +5649,7 @@ extern "C"
 	// Stream reader object
 	BINARYNINJACOREAPI BNBinaryReader* BNCreateBinaryReader(BNBinaryView* view);
 	BINARYNINJACOREAPI void BNFreeBinaryReader(BNBinaryReader* stream);
+	BINARYNINJACOREAPI BNBinaryReader* BNSliceBinaryReader(BNBinaryReader* stream, uint64_t offset, size_t length);
 	BINARYNINJACOREAPI BNEndianness BNGetBinaryReaderEndianness(BNBinaryReader* stream);
 	BINARYNINJACOREAPI void BNSetBinaryReaderEndianness(BNBinaryReader* stream, BNEndianness endian);
 

binaryreader.cpp

@@ -31,6 +31,11 @@ BinaryReader::BinaryReader(BinaryView* data, BNEndianness endian) : m_view(data)
 }
 
 
+BinaryReader::BinaryReader(Ref<BinaryView> data, BNBinaryReader* stream) : m_view(data), m_stream(stream)
+{
+}
+
+
 BinaryReader::~BinaryReader()
 {
 	BNFreeBinaryReader(m_stream);
@@ -443,6 +448,12 @@ bool BinaryReader::TryReadBEPointer(uint64_t& result)
 }
 
 
+BinaryReader BinaryReader::Slice(uint64_t offset, size_t length) const
+{
+	return BinaryReader(m_view, BNSliceBinaryReader(m_stream, offset, length));
+}
+
+
 uint64_t BinaryReader::GetOffset() const
 {
 	return BNGetReaderPosition(m_stream);