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/* check-representation.cpp -- Check whether a vector is generated by given generators
Copyright 2007 Matthias Koeppe
This file is part of LattE.
LattE is free software; you can redistribute it and/or modify it
under the terms of the version 2 of the GNU General Public License
as published by the Free Software Foundation.
LattE 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 LattE; if not, write to the Free Software Foundation,
Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#include <cstdlib>
#include <cassert>
#include <climits>
#include <cstring>
#include <string>
#include <iostream>
#include <fstream>
#include <cplex.h>
#include "ReductionTest.h"
using namespace std;
int verbose = false;
ReductionTest *reduction_test = NULL;
ReductionTestFactory reduction_test_factory;
static void usage()
{
cerr << "usage: check-representation [OPTIONS] VECTORS" << endl;
cerr << "Options are: " << endl
<< " --no-header Read an input file without a dimensions header" << endl;
reduction_test_factory.show_options(cerr);
}
void
open_matrix_file(const string &filename, ifstream &file,
int &num, int &dim)
{
file.open(filename.c_str());
if (!file.good()) {
cerr << "Failed to open " << filename << endl;
exit(1);
}
file >> num >> dim;
if (!file.good()) {
cerr << "Parse error reading file " << filename << endl;
exit(1);
}
}
int main(int argc, char **argv)
{
if (argc < 2) {
usage();
exit(1);
}
// Set default.
reduction_test_factory.type = ReductionTestFactory::ReductionWithCPLEX;
bool vectors_file_no_header = false;
{
int i;
for (i = 1; i<argc-1; i++) {
if (reduction_test_factory.parse_option(argv[i])) {}
else if (strcmp(argv[i], "--no-header") == 0) {
vectors_file_no_header = true;
}
else if (strcmp(argv[i], "--verbose") == 0) {
reduction_test_factory.verbose = true;
}
else {
cerr << "Unknown option: " << argv[i] << endl;
exit(1);
}
}
}
reduction_test = reduction_test_factory.CreateReductionTest();
int dim_generators = reduction_test->GetDimension();
string vectors_filename(argv[argc - 1]);
int num_vectors, dim_vectors;
ifstream vectors_file;
if (vectors_file_no_header) {
vectors_file.open(vectors_filename.c_str());
if (!vectors_file.good()) {
cerr << "Failed to open file " << vectors_filename << endl;
exit(1);
}
if (dim_generators < 0) {
cerr << "Sorry, I do not know the dimension of the vectors." << endl;
exit(1);
}
dim_vectors = dim_generators;
num_vectors = INT_MAX;
}
else {
open_matrix_file(vectors_filename, vectors_file, num_vectors, dim_vectors);
if (dim_generators >= 0) {
assert(dim_vectors == dim_generators);
}
}
cerr << "Checking that all vectors are generated over the nonnegative reals, and the nonnegative integers." << endl;
vector<int> v(dim_vectors);
int i;
for (i = 0; i<num_vectors; i++) {
if (i % 1000 == 0) {
cerr << i << "/" << num_vectors << " done. " << endl;
}
if (verbose)
cerr << "Checking vector: ";
int j;
for (j = 0; j<dim_vectors; j++) {
vectors_file >> v[j];
if (verbose)
cerr << v[j] << " ";
}
if (vectors_file_no_header && vectors_file.eof()) {
cerr << "After reading " << i << " vectors, end of file." << endl;
exit(0);
}
if (!vectors_file.good()) {
cerr << "After reading " << i << " vectors, parse error reading vectors file" << endl;
exit(1);
}
if (verbose)
cerr << endl;
if (!reduction_test->IsReducible(v)) {
cerr << "Irreducible: ";
for (j = 0; j<dim_vectors; j++)
cerr << v[j] << " ";
cerr << endl;
}
}
delete reduction_test;
}
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