core/Textbuf.hh

   1 /******************************************************************************
   2  * Copyright (c) 2000-2016 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  * Contributors:
   9  *   Balasko, Jeno
  10  *   Forstner, Matyas
  11  *   Kovacs, Ferenc
  12  *   Raduly, Csaba
  13  *   Szabo, Janos Zoltan – initial implementation
  14  *
  15  ******************************************************************************/
  16 #ifndef TEXTBUF_HH
  17 #define TEXTBUF_HH
  18
  19 #include "Types.h"
  20 #include "RInt.hh"
  21
  22 class Text_Buf {
  23 private:
  24   int buf_size;  ///< amount of allocated memory
  25   int buf_begin; ///< number of reserved bytes
  26   int buf_pos;   ///< read position into the payload
  27   int buf_len;   ///< number of payload bytes
  28   void *data_ptr;
  29
  30   void Allocate(int size);
  31   void Reallocate(int size);
  32
  33   boolean safe_pull_int(int_val_t& value);
  34   /// Copy constructor disabled
  35   Text_Buf(const Text_Buf&);
  36   /// Assignment disabled
  37   Text_Buf& operator=(const Text_Buf&);
  38 public:
  39   Text_Buf();
  40   ~Text_Buf();
  41
  42   void reset();
  43   inline void rewind() { buf_pos = buf_begin; }
  44
  45   inline int get_len() const { return buf_len; }
  46   inline int get_pos() const { return buf_pos - buf_begin; }
  47   inline void buf_seek(int new_pos) { buf_pos = buf_begin + new_pos; }
  48   inline const char *get_data() const
  49     { return (const char*)data_ptr + buf_begin; }
  50
  51   void push_int(const int_val_t& value);
  52   void push_int(const RInt& value);
  53   const int_val_t pull_int();
  54
  55   void push_double(double value);
  56   double pull_double();
  57
  58   void push_raw(int len, const void *data);
  59   void push_raw_front(int len, const void *data);
  60   void pull_raw(int len, void *data);
  61
  62   void push_string(const char *string_ptr);
  63   char *pull_string();
  64
  65   void push_qualified_name(const qualified_name& name);
  66   void pull_qualified_name(qualified_name& name);
  67
  68   void calculate_length();
  69
  70   void get_end(char*& end_ptr, int& end_len);
  71   void increase_length(int add_len);
  72   boolean is_message();
  73   void cut_message();
  74
  75 };
  76
  77 #endif