1 files changed, 83 insertions, 0 deletions
diff --git a/FoundationEx/include/starshatter/foundation/reader.h b/FoundationEx/include/starshatter/foundation/reader.h
new file mode 100644
index 0000000..7ec81b4
--- /dev/null
+++ b/FoundationEx/include/starshatter/foundation/reader.h
@@ -0,0 +1,83 @@
+/*  Starshatter: The Open Source Project
+    Copyright (c) 2021-2024, Starshatter: The Open Source Project Contributors
+    Copyright (c) 2011-2012, Starshatter OpenSource Distribution Contributors
+    Copyright (c) 1997-2006, Destroyer Studios LLC.
+*/
+
+#pragma once
+
+#include <cstddef>
+#include <memory>
+
+
+namespace starshatter
+{
+namespace foundation
+{
+
+
+using Count = std::size_t;
+using Offset = std::ptrdiff_t;
+
+
+enum class Direction
+{
+	Start,
+	End,
+	Current,
+};
+
+
+template <typename Char>
+struct BaseReader
+{
+	virtual ~BaseReader() = default;
+	virtual bool valid() const = 0;
+	virtual Count available() const = 0;
+	virtual Count seek(Count pos) = 0;
+	virtual Count seek(Offset offset, Direction dir) = 0;
+	virtual Count read(Char* dest) = 0;
+	virtual Count read(Char* dest, Count bytes) = 0;
+	virtual Count peek(Char* dest) const = 0;
+	virtual Count peek(Char* dest, Count bytes) const = 0;
+	virtual const Char* data() const = 0;
+};
+
+
+struct Reader : public BaseReader<char>
+{
+	using Base = std::unique_ptr<BaseReader>;
+	using Chars = std::unique_ptr<const char[]>;
+
+	Reader();
+
+	Reader(const Reader&) = delete;
+	Reader& operator=(const Reader&) = delete;
+
+	Reader(Reader&& other);
+	Reader& operator=(Reader&& other);
+
+	Reader(Base src);
+	Reader(Chars src);
+	Reader(Chars src, Count bytes);
+	Reader(const char* src);
+	Reader(const char* src, Count bytes);
+
+	~Reader() override = default;
+
+	bool valid() const override;
+	Count available() const override;
+	Count seek(Count pos) override;
+	Count seek(Offset offset, Direction dir) override;
+	Count read(char* dest) override;
+	Count read(char* dest, Count bytes) override;
+	Count peek(char* dest) const override;
+	Count peek(char* dest, Count bytes) const override;
+	const char* data() const override;
+private:
+	Base actual;
+};
+
+
+}  // namespace foundation
+}  // namespace starshatter