Basics of library.

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diff --git a/include/fud_c_file.hpp b/include/fud_c_file.hpp
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+/*
+ * libfud
+ * Copyright 2024 Dominick Allen
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FUD_C_FILE_HPP
+#define FUD_C_FILE_HPP
+
+#include "fud_string.hpp"
+#include "fud_result.hpp"
+
+#include <cstdint>
+#include <cstdio>
+
+namespace fud {
+
+enum class CFileMode : uint8_t
+{
+    ReadOnly,
+    ReadWrite,
+    WriteTruncate,
+    ReadWriteTruncate,
+    WriteAppend,
+    ReadWriteAppend,
+};
+
+constexpr const char* CBinaryFileModeFromFlags(CFileMode mode)
+{
+    switch (mode) {
+    case CFileMode::ReadOnly:
+        return "rb";
+    case CFileMode::ReadWrite:
+        return "r+b";
+    case CFileMode::WriteTruncate:
+        return "wb";
+    case CFileMode::ReadWriteTruncate:
+        return "w+b";
+    case CFileMode::WriteAppend:
+        return "ab";
+    case CFileMode::ReadWriteAppend:
+        return "a+b";
+    default:
+        return "";
+    }
+}
+
+constexpr const char* CTextFileModeFromFlags(CFileMode mode)
+{
+    switch (mode) {
+    case CFileMode::ReadOnly:
+        return "r";
+    case CFileMode::ReadWrite:
+        return "r+";
+    case CFileMode::WriteTruncate:
+        return "w";
+    case CFileMode::ReadWriteTruncate:
+        return "w+";
+    case CFileMode::WriteAppend:
+        return "a";
+    case CFileMode::ReadWriteAppend:
+        return "a+";
+    default:
+        return "";
+    }
+}
+
+enum class FileResult
+{
+    Success,
+    Error,
+};
+
+class CBinaryFile {
+  public:
+    CBinaryFile(const String& filename, CFileMode mode);
+    CBinaryFile(const String& filename, CFileMode mode, const String& extraFlags);
+    ~CBinaryFile();
+    FileResult open();
+    void close();
+    const FILE* file() const;
+
+  private:
+    String m_filename;
+    String m_extraFlags{};
+    String m_mode;
+    CFileMode m_modeFlags;
+    FILE* m_file{nullptr};
+};
+
+} // namespace fud
+
+
+#endif