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00023 #ifndef _CLASS_PUSHBACKINPUTSTREAM_H
00024 #define _CLASS_PUSHBACKINPUTSTREAM_H
00025
00026 #ifdef __cplusplus
00027
00028 #include "beecrypt/c++/io/FilterInputStream.h"
00029 using beecrypt::io::FilterInputStream;
00030
00031 namespace beecrypt {
00032 namespace io {
00035 class BEECRYPTCXXAPI PushbackInputStream : public FilterInputStream
00036 {
00037 private:
00038 bool _closed;
00039
00040 protected:
00041 bytearray buf;
00042 size_t pos;
00043
00044 public:
00045 PushbackInputStream(InputStream& in, size_t size = 1);
00046 virtual ~PushbackInputStream();
00047
00048 virtual off_t available() throw (IOException);
00049 virtual void close() throw (IOException);
00050 virtual bool markSupported() throw ();
00051 virtual int read() throw (IOException);
00052 virtual int read(byte* data, size_t offset, size_t length) throw (IOException);
00053 virtual off_t skip(off_t n) throw (IOException);
00054
00055 void unread(byte) throw (IOException);
00056 void unread(const byte* data, size_t offset, size_t length) throw (IOException);
00057 void unread(const bytearray& b) throw (IOException);
00058 };
00059 }
00060 }
00061
00062 #endif
00063
00064 #endif