Panda3D
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00001 // Filename: stringStreamBuf.h 00002 // Created by: drose (02Jul07) 00003 // 00004 //////////////////////////////////////////////////////////////////// 00005 // 00006 // PANDA 3D SOFTWARE 00007 // Copyright (c) Carnegie Mellon University. All rights reserved. 00008 // 00009 // All use of this software is subject to the terms of the revised BSD 00010 // license. You should have received a copy of this license along 00011 // with this source code in a file named "LICENSE." 00012 // 00013 //////////////////////////////////////////////////////////////////// 00014 00015 #ifndef STRINGSTREAMBUF_H 00016 #define STRINGSTREAMBUF_H 00017 00018 #include "pandabase.h" 00019 #include "pvector.h" 00020 00021 //////////////////////////////////////////////////////////////////// 00022 // Class : StringStreamBuf 00023 // Description : Used by StringStream to implement an stream that 00024 // reads from and/or writes to a memory buffer, whose 00025 // contents can be appended to or extracted at any time 00026 // by application code. 00027 //////////////////////////////////////////////////////////////////// 00028 class EXPCL_PANDAEXPRESS StringStreamBuf : public streambuf { 00029 public: 00030 StringStreamBuf(); 00031 virtual ~StringStreamBuf(); 00032 00033 void clear(); 00034 00035 INLINE void swap_data(pvector<unsigned char> &data); 00036 INLINE const pvector<unsigned char> &get_data() const; 00037 00038 size_t read_chars(char *start, size_t length); 00039 void write_chars(const char *start, size_t length); 00040 00041 protected: 00042 virtual streampos seekoff(streamoff off, ios_seekdir dir, ios_openmode which); 00043 virtual streampos seekpos(streampos pos, ios_openmode which); 00044 00045 virtual int overflow(int c); 00046 virtual int sync(); 00047 virtual int underflow(); 00048 00049 private: 00050 pvector<unsigned char> _data; 00051 char *_buffer; 00052 size_t _ppos; 00053 size_t _gpos; 00054 }; 00055 00056 #include "stringStreamBuf.I" 00057 00058 #endif