1 files changed, 50 insertions, 0 deletions
diff --git a/casa/io/ConstraintFile.C b/casa/io/ConstraintFile.C
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+++ b/casa/io/ConstraintFile.C
@@ -0,0 +1,50 @@
+// Copyright 2008, 2009 Brady J. Garvin
+
+// This file is part of Covering Arrays by Simulated Annealing (CASA).
+
+// CASA 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 3 of the License, or
+// (at your option) any later version.
+
+// CASA 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 CASA.  If not, see <http://www.gnu.org/licenses/>.
+
+
+#include "io/ConstraintFile.H"
+
+using namespace std;
+
+ConstraintFile::ConstraintFile(const string&filename) {
+  if (!filename.size()) {
+    return;
+  }
+  ifstream fileInputStream(filename.data());
+  unsigned clauseCount;
+  fileInputStream >> clauseCount;
+  clauses = Array<InputClause>(clauseCount);
+  for (unsigned i = 0; i < clauseCount; ++i) {
+    InputClause&clause = clauses[i];
+    unsigned termCount;
+    fileInputStream >> termCount;
+    while (termCount--) {
+      char sign;
+      unsigned symbol;
+      do {
+	fileInputStream >> sign;
+      } while (sign != '-' && sign != '+');
+      fileInputStream >> symbol;
+      clause.append(InputTerm(sign == '-', symbol));
+    }
+  }
+  fileInputStream.close();
+}
+
+const Array<InputClause>&ConstraintFile::getClauses() const {
+  return clauses;
+}