Added filesystem-only starshatter::data DataLoader replacement

Step by step. The intent is to find a good spot between current data
representations and the standard library and put the intermediate
stage there. After it matures a bit, we can move further away.

1 files changed, 49 insertions, 0 deletions

diff --git a/FoundationEx/src/reader/file.h b/FoundationEx/src/reader/file.h
new file mode 100644
index 0000000..22810b6
--- /dev/null
+++ b/FoundationEx/src/reader/file.h
@@ -0,0 +1,49 @@
+/*  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 <fstream>
+
+#include <starshatter/foundation/reader.h>
+#include <Text.h>
+
+
+namespace starshatter
+{
+namespace foundation
+{
+
+
+struct FileReader : public BaseReader<char>
+{
+	FileReader() = default;
+	FileReader(std::fstream src);
+	FileReader(const FileReader& other) = delete;
+	FileReader& operator=(const FileReader& other) = delete;
+	FileReader(FileReader&& other) = default;
+	FileReader& operator=(FileReader&& other) = default;
+	~FileReader() 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;
+	Text more() override;
+
+private:
+	mutable std::fstream file = {};
+	Count size = {};
+	Count position = {};
+};
+
+
+}  // namespace foundation
+}  // namespace starshatter