Line data    Source code

       1             : /******************************************************************************
       2             :  *
       3             :  * Purpose:  Implementation of the CPCIDSK_TEX class.
       4             :  *
       5             :  ******************************************************************************
       6             :  * Copyright (c) 2010
       7             :  * PCI Geomatics, 90 Allstate Parkway, Markham, Ontario, Canada.
       8             :  *
       9             :  * Permission is hereby granted, free of charge, to any person obtaining a
      10             :  * copy of this software and associated documentation files (the "Software"),
      11             :  * to deal in the Software without restriction, including without limitation
      12             :  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
      13             :  * and/or sell copies of the Software, and to permit persons to whom the
      14             :  * Software is furnished to do so, subject to the following conditions:
      15             :  *
      16             :  * The above copyright notice and this permission notice shall be included
      17             :  * in all copies or substantial portions of the Software.
      18             :  *
      19             :  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
      20             :  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
      21             :  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
      22             :  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
      23             :  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
      24             :  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
      25             :  * DEALINGS IN THE SOFTWARE.
      26             :  ****************************************************************************/
      27             : 
      28             : #include "pcidsk_exception.h"
      29             : #include "segment/cpcidsk_tex.h"
      30             : #include <cassert>
      31             : #include <cstring>
      32             : 
      33             : using namespace PCIDSK;
      34             : 
      35             : /************************************************************************/
      36             : /*                            CPCIDSK_TEX()                             */
      37             : /************************************************************************/
      38             : 
      39           0 : CPCIDSK_TEX::CPCIDSK_TEX( PCIDSKFile *fileIn, int segmentIn,
      40           0 :                           const char *segment_pointer )
      41           0 :         : CPCIDSKSegment( fileIn, segmentIn, segment_pointer )
      42             : 
      43             : {
      44           0 : }
      45             : 
      46             : /************************************************************************/
      47             : /*                            ~CPCIDSK_TEX()                            */
      48             : /************************************************************************/
      49             : 
      50           0 : CPCIDSK_TEX::~CPCIDSK_TEX()
      51             : 
      52             : {
      53           0 : }
      54             : 
      55             : /************************************************************************/
      56             : /*                              ReadText()                              */
      57             : /************************************************************************/
      58             : 
      59           0 : std::string CPCIDSK_TEX::ReadText()
      60             : 
      61             : {
      62           0 :     PCIDSKBuffer seg_data;
      63             : 
      64           0 :     seg_data.SetSize( (int) GetContentSize() );
      65             : 
      66           0 :     ReadFromFile( seg_data.buffer, 0, seg_data.buffer_size );
      67             : 
      68             :     int i;
      69           0 :     char *tbuffer = (char *) seg_data.buffer;
      70             : 
      71           0 :     for( i = 0; i < seg_data.buffer_size; i++ )
      72             :     {
      73           0 :         if( tbuffer[i] == '\r' )
      74           0 :             tbuffer[i] = '\n';
      75             : 
      76           0 :         if( tbuffer[i] == '\0' )
      77           0 :             break;
      78             :     }
      79             : 
      80           0 :     return std::string( (const char *) seg_data.buffer, i );
      81             : }
      82             : 
      83             : /************************************************************************/
      84             : /*                             WriteText()                              */
      85             : /************************************************************************/
      86             : 
      87           0 : void CPCIDSK_TEX::WriteText( const std::string &text_in )
      88             : 
      89             : {
      90             :     // Transform all \n's to \r's (chr(10) to char(13)).
      91           0 :     unsigned int i, i_out = 0;
      92           0 :     std::string text = text_in;
      93             : 
      94           0 :     for( i = 0; i < text.size(); i++ )
      95             :     {
      96           0 :         if( text[i] == '\0' )
      97             :         {
      98           0 :             text.resize( i );
      99           0 :             break;
     100             :         }
     101             : 
     102           0 :         if( text[i] == '\n' && text[i+1] == '\r' )
     103             :         {
     104           0 :             text[i_out++] = '\r';
     105           0 :             i++;
     106             :         }
     107           0 :         else if( text[i] == '\r' && text[i+1] == '\n' )
     108             :         {
     109           0 :             text[i_out++] = '\r';
     110           0 :             i++;
     111             :         }
     112           0 :         else if( text[i] == '\n' )
     113           0 :             text[i_out++] = '\r';
     114             :         else
     115           0 :             text[i_out++] = text[i];
     116             :     }
     117             : 
     118           0 :     text.resize( i_out );
     119             : 
     120             :     // make sure we have a newline at the end.
     121             : 
     122           0 :     if( i_out > 0 && text[i_out-1] != '\r' )
     123           0 :         text += "\r";
     124             : 
     125             :     // We really *ought* to ensure the rest of the segment
     126             :     // is zeroed out to properly adhere to the specification.
     127             :     // It might also be prudent to ensure the segment grows
     128             :     // in 32K increments to avoid "move to end of file churn"
     129             :     // if several text segments are growing a bit at a time
     130             :     // though this is uncommon.
     131             : 
     132           0 :     WriteToFile( text.c_str(), 0, text.size() + 1 );
     133           0 : }