core/Textbuf.hh

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Copyright (c) 2000-2015 Ericsson Telecom AB
   3 // All rights reserved. This program and the accompanying materials
   4 // are made available under the terms of the Eclipse Public License v1.0
   5 // which accompanies this distribution, and is available at
   6 // http://www.eclipse.org/legal/epl-v10.html
   7 ///////////////////////////////////////////////////////////////////////////////
   8 #ifndef TEXTBUF_HH
   9 #define TEXTBUF_HH
  10
  11 #include "Types.h"
  12 #include "RInt.hh"
  13
  14 class Text_Buf {
  15 private:
  16   int buf_size;  ///< amount of allocated memory
  17   int buf_begin; ///< number of reserved bytes
  18   int buf_pos;   ///< read position into the payload
  19   int buf_len;   ///< number of payload bytes
  20   void *data_ptr;
  21
  22   void Allocate(int size);
  23   void Reallocate(int size);
  24
  25   boolean safe_pull_int(int_val_t& value);
  26   /// Copy constructor disabled
  27   Text_Buf(const Text_Buf&);
  28   /// Assignment disabled
  29   Text_Buf& operator=(const Text_Buf&);
  30 public:
  31   Text_Buf();
  32   ~Text_Buf();
  33
  34   void reset();
  35   inline void rewind() { buf_pos = buf_begin; }
  36
  37   inline int get_len() const { return buf_len; }
  38   inline int get_pos() const { return buf_pos - buf_begin; }
  39   inline void buf_seek(int new_pos) { buf_pos = buf_begin + new_pos; }
  40   inline const char *get_data() const
  41     { return (const char*)data_ptr + buf_begin; }
  42
  43   void push_int(const int_val_t& value);
  44   void push_int(const RInt& value);
  45   const int_val_t pull_int();
  46
  47   void push_double(double value);
  48   double pull_double();
  49
  50   void push_raw(int len, const void *data);
  51   void pull_raw(int len, void *data);
  52
  53   void push_string(const char *string_ptr);
  54   char *pull_string();
  55
  56   void push_qualified_name(const qualified_name& name);
  57   void pull_qualified_name(qualified_name& name);
  58
  59   void calculate_length();
  60
  61   void get_end(char*& end_ptr, int& end_len);
  62   void increase_length(int add_len);
  63   boolean is_message();
  64   void cut_message();
  65
  66 };
  67
  68 #endif