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/******************************************************************************
*
* Purpose: Implementation of the CLinkSegment class.
*
******************************************************************************
* Copyright (c) 2009
* PCI Geomatics, 50 West Wilmot Street, Richmond Hill, Ont, Canada
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
****************************************************************************/
#include "core/clinksegment.h"
#include "segment/cpcidsksegment.h"
#include "core/pcidsk_utils.h"
#include "pcidsk_exception.h"
#include <vector>
#include <string>
#include <cassert>
#include <cstring>
#include <algorithm>
#include <functional>
using namespace PCIDSK;
CLinkSegment::CLinkSegment(PCIDSKFile *file,
int segment,
const char *segment_pointer) :
CPCIDSKSegment(file, segment, segment_pointer),
loaded_(false), modified_(false)
{
Load();
}
CLinkSegment::~CLinkSegment()
{
}
// Load the contents of the segment
void CLinkSegment::Load()
{
// Check if we've already loaded the segment into memory
if (loaded_) {
return;
}
assert(data_size - 1024 == 1 * 512);
seg_data.SetSize(data_size - 1024); // should be 1 * 512
ReadFromFile(seg_data.buffer, 0, data_size - 1024);
if (std::strncmp(seg_data.buffer, "SysLinkF", 8))
{
seg_data.Put("SysLinkF",0,8);
return;
}
path = std::string(&seg_data.buffer[8]);
std::string::reverse_iterator first_non_space =
std::find_if(path.rbegin(), path.rend(),
std::bind2nd(std::not_equal_to<char>(), ' '));
*(--first_non_space) = '\0';
// We've now loaded the structure up with data. Mark it as being loaded
// properly.
loaded_ = true;
}
void CLinkSegment::Write(void)
{
//We are not writing if nothing was loaded.
if (!modified_) {
return;
}
seg_data.Put("SysLinkF",0,8);
seg_data.Put(path.c_str(), 8, path.size(), true);
WriteToFile(seg_data.buffer, 0, data_size-1024);
modified_ = false;
}
std::string CLinkSegment::GetPath(void) const
{
return path;
}
void CLinkSegment::SetPath(const std::string& oPath)
{
if(oPath.size() < 504)
{
path = oPath;
modified_ = true;
}
else
{
throw PCIDSKException("The size of the path cannot be"
" bigger than 504 characters.");
}
}
void CLinkSegment::Synchronize()
{
if(modified_)
{
this->Write();
}
}
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