Line data    Source code

       1             : /*************************************************************************
       2             :  *
       3             :  * Copyright (c) 2012 Kohei Yoshida
       4             :  *
       5             :  * Permission is hereby granted, free of charge, to any person
       6             :  * obtaining a copy of this software and associated documentation
       7             :  * files (the "Software"), to deal in the Software without
       8             :  * restriction, including without limitation the rights to use,
       9             :  * copy, modify, merge, publish, distribute, sublicense, and/or sell
      10             :  * copies of the Software, and to permit persons to whom the
      11             :  * Software is furnished to do so, subject to the following
      12             :  * conditions:
      13             :  *
      14             :  * The above copyright notice and this permission notice shall be
      15             :  * included in all copies or substantial portions of the Software.
      16             :  *
      17             :  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
      18             :  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
      19             :  * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
      20             :  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
      21             :  * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
      22             :  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
      23             :  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
      24             :  * OTHER DEALINGS IN THE SOFTWARE.
      25             :  *
      26             :  ************************************************************************/
      27             : 
      28             : #ifndef __ORCUS_CELL_BUFFER_HPP__
      29             : #define __ORCUS_CELL_BUFFER_HPP__
      30             : 
      31             : #include <string>
      32             : 
      33             : #define ORCUS_DEBUG_CELL_BUFFER 0
      34             : 
      35             : #if ORCUS_DEBUG_CELL_BUFFER
      36             : #include <iostream>
      37             : using std::cout;
      38             : using std::endl;
      39             : #endif
      40             : 
      41             : namespace orcus {
      42             : 
      43             : /**
      44             :  * Temporary cell buffer used to convert cell values when needed.  This is
      45             :  * used in the sax and csv parsers.
      46             :  */
      47          64 : class cell_buffer
      48             : {
      49             :     std::string m_buffer;
      50             :     size_t m_buf_size; /// Logical buffer size. May differ from the actual buffer size.
      51             : public:
      52          64 :     cell_buffer() : m_buf_size(0) {}
      53             : 
      54         332 :     void append(const char* p, size_t len)
      55             :     {
      56         332 :         if (!len)
      57         340 :             return;
      58             : 
      59             : #if ORCUS_DEBUG_CELL_BUFFER
      60             :         cout << "cell_buffer::append: '" << std::string(p, len) << "'" << endl;
      61             : #endif
      62             : 
      63         324 :         size_t size_needed = m_buf_size + len;
      64         324 :         if (m_buffer.size() < size_needed)
      65          38 :             m_buffer.resize(size_needed);
      66             : 
      67         324 :         char* p_dest = &m_buffer[m_buf_size];
      68         324 :         std::strncpy(p_dest, p, len);
      69         324 :         m_buf_size += len;
      70             :     }
      71             : 
      72         104 :     void reset() { m_buf_size = 0; }
      73         104 :     const char* get() const { return &m_buffer[0]; }
      74         104 :     size_t size() const { return m_buf_size; }
      75           0 :     bool empty() const { return m_buf_size == 0; }
      76             : };
      77             : 
      78             : }
      79             : 
      80             : #endif