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/**************************************************************************
* *
* Regina - A Normal Surface Theory Calculator *
* Computational Engine *
* *
* Copyright (c) 1999-2008, Ben Burton *
* For further details contact Ben Burton (bab@debian.org). *
* *
* This program is free software; you can redistribute it and/or *
* modify it under the terms of the GNU General Public License as *
* published by the Free Software Foundation; either version 2 of the *
* License, or (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, but *
* WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
* General Public License for more details. *
* *
* You should have received a copy of the GNU General Public *
* License along with this program; if not, write to the Free *
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, *
* MA 02110-1301, USA. *
* *
**************************************************************************/
/* end stub */
#include <fstream>
#include <sstream>
#include "foreign/dehydration.h"
#include "packet/ncontainer.h"
#include "packet/ntext.h"
#include "triangulation/ntriangulation.h"
namespace regina {
NContainer* readDehydrationList(const char *filename,
unsigned colDehydrations, int colLabels, unsigned long ignoreLines) {
// Open the file.
std::ifstream in(filename);
if (! in)
return 0;
// Ignore the specified number of lines.
std::string line;
unsigned long i;
for (i = 0; i < ignoreLines; i++) {
std::getline(in, line);
if (in.eof())
return new NContainer();
}
// Read in and process the remaining lines.
NContainer* ans = new NContainer();
std::string errStrings;
int col;
std::string token;
std::string dehydration;
std::string label;
NTriangulation* tri;
while(! in.eof()) {
// Read in the next line.
line.clear();
std::getline(in, line);
if (line.empty())
continue;
// Find the appropriate tokens.
std::istringstream tokens(line);
dehydration.clear();
label.clear();
for (col = 0; col <= static_cast<int>(colDehydrations) ||
col <= colLabels; col++) {
tokens >> token;
if (token.empty())
break;
if (col == static_cast<int>(colDehydrations))
dehydration = token;
if (col == colLabels)
label = token;
}
if (! dehydration.empty()) {
// Process this dehydration string.
tri = new NTriangulation();
if (tri->insertRehydration(dehydration)) {
tri->setPacketLabel(label.empty() ? dehydration : label);
ans->insertChildLast(tri);
} else {
errStrings = errStrings + '\n' + dehydration;
delete tri;
}
}
}
// Finish off.
if (! errStrings.empty()) {
NText* errPkt = new NText(std::string(
"The following dehydration string(s) could not be rehydrated:\n") +
errStrings);
errPkt->setPacketLabel("Errors");
ans->insertChildLast(errPkt);
}
ans->makeUniqueLabels(0);
return ans;
}
} // namespace regina
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