Panda3D
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00001 // Filename: stringDecoder.h 00002 // Created by: drose (11Feb02) 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 STRINGDECODER_H 00016 #define STRINGDECODER_H 00017 00018 #include "pandabase.h" 00019 00020 00021 //////////////////////////////////////////////////////////////////// 00022 // Class : StringDecoder 00023 // Description : The base class to a family of classes that decode 00024 // various kinds of encoded byte streams. Give it a 00025 // string, then ask it to pull the characters out one at 00026 // a time. This also serves as the plain old 00027 // byte-at-a-time decoder. 00028 //////////////////////////////////////////////////////////////////// 00029 class StringDecoder { 00030 public: 00031 INLINE StringDecoder(const string &input); 00032 virtual ~StringDecoder(); 00033 00034 virtual int get_next_character(); 00035 INLINE bool is_eof(); 00036 00037 protected: 00038 INLINE bool test_eof(); 00039 00040 string _input; 00041 size_t _p; 00042 bool _eof; 00043 }; 00044 00045 //////////////////////////////////////////////////////////////////// 00046 // Class : StringUtf8Decoder 00047 // Description : This decoder extracts utf-8 sequences. 00048 //////////////////////////////////////////////////////////////////// 00049 class StringUtf8Decoder : public StringDecoder { 00050 public: 00051 INLINE StringUtf8Decoder(const string &input); 00052 00053 virtual int get_next_character(); 00054 }; 00055 00056 //////////////////////////////////////////////////////////////////// 00057 // Class : StringUnicodeDecoder 00058 // Description : This decoder extracts characters two at a time to get 00059 // a plain wide character sequence. 00060 //////////////////////////////////////////////////////////////////// 00061 class StringUnicodeDecoder : public StringDecoder { 00062 public: 00063 INLINE StringUnicodeDecoder(const string &input); 00064 00065 virtual int get_next_character(); 00066 }; 00067 00068 #include "stringDecoder.I" 00069 00070 #endif