diff -r d8475431bbbb -r 8e85e6bbefdf demo/dim_to_dot.cc
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/demo/dim_to_dot.cc	Mon May 23 04:48:14 2005 +0000
@@ -0,0 +1,59 @@
+// -*- c++ -*-
+
+// Use a DIMACS max flow file as stdin.
+// dim_to_dot < dimacs_max_flow_file > dot_output_file
+// This program makes a dot file from a dimacs max flow file. 
+// This program can be an aid in making up to date visualized documantation 
+// of demo programs.
+
+#include <iostream>
+#include <fstream>
+
+#include <lemon/smart_graph.h>
+#include <lemon/dimacs.h>
+
+using namespace lemon;
+
+using std::cout;
+using std::endl;
+
+int main()
+{    
+  typedef SmartGraph Graph;
+
+  typedef Graph::Edge Edge;
+  typedef Graph::Node Node;
+  typedef Graph::EdgeIt EdgeIt;
+  typedef Graph::NodeIt NodeIt;
+  typedef Graph::EdgeMap<int> LengthMap;
+
+  Graph g;
+  Node s, t;
+  LengthMap length(g);
+
+  readDimacs(std::cin, g, length, s, t);
+
+  cout << "digraph lemon_dot_example {" << endl;
+  cout << "  node [ shape=ellipse, fontname=Helvetica, fontsize=10 ];" << endl;
+  for(NodeIt n(g); n!=INVALID; ++n) {
+    if (n==s) {
+      cout << "  n" << g.id(n) 
+	   << " [ label=\"" << g.id(n) << " (s)\" ]; " << endl;
+    } else {
+      if (n==t) {
+	cout << "  n" << g.id(n) 
+	     << " [ label=\"" << g.id(n) << " (t)\" ]; " << endl; 
+      } else {
+	cout << "  n" << g.id(n) 
+	     << " [ label=\"" << g.id(n) << "\" ]; " << endl; 
+      }
+    }
+  }
+  cout << "  edge [ shape=ellipse, fontname=Helvetica, fontsize=10 ];" << endl;
+  for(EdgeIt e(g); e!=INVALID; ++e) {
+    cout << "  n" << g.id(g.source(e)) << " -> " << " n" << g.id(g.target(e))
+	 << " [ label=\"" << g.id(e) 
+	 << ", length:" << length[e] << "\" ]; " << endl;
+  } 
+  cout << "}" << endl;
+}