Code so far

data.h

@@ -0,0 +1,52 @@
+#ifndef _PYC_FILE_H
+#define _PYC_FILE_H
+
+#include <cstdio>
+
+class PycData {
+public:
+    PycData() { }
+    virtual ~PycData() { }
+
+    virtual bool isOpen() const = 0;
+    virtual bool atEof() const = 0;
+
+    virtual int getByte() = 0;
+    virtual int getBuffer(int bytes, void* buffer) = 0;
+    int get16();
+    int get32();
+};
+
+class PycFile : public PycData {
+public:
+    PycFile(const char* filename);
+    ~PycFile() { if (m_stream) fclose(m_stream); }
+
+    bool isOpen() const { return (m_stream != 0); }
+    bool atEof() const;
+
+    int getByte();
+    int getBuffer(int bytes, void* buffer);
+
+private:
+    FILE* m_stream;
+};
+
+class PycBuffer : public PycData {
+public:
+    PycBuffer(const void* buffer, int size)
+        : m_buffer((const unsigned char*)buffer), m_size(size), m_pos(0) { }
+    ~PycBuffer() { }
+
+    bool isOpen() const { return (m_buffer != 0); }
+    bool atEof() const { return (m_pos == m_size); }
+
+    int getByte();
+    int getBuffer(int bytes, void* buffer);
+
+private:
+    const unsigned char* m_buffer;
+    int m_size, m_pos;
+};
+
+#endif