#! /bin/sh /usr/share/dpatch/dpatch-run
## 20-homedir.dpatch by Andreas Putzo <andreas@putzo.net>
##
## DP: Do not overwrite ~/.gpsdrive/osm.xml when gpsdrive is started.

@DPATCH@
diff -urNad gpsdrive-2.10~pre4~/src/mapnik.cpp gpsdrive-2.10~pre4/src/mapnik.cpp
--- gpsdrive-2.10~pre4~/src/mapnik.cpp	2007-09-17 07:48:41.000000000 +0000
+++ gpsdrive-2.10~pre4/src/mapnik.cpp	2007-09-17 07:50:02.000000000 +0000
@@ -165,20 +165,21 @@
     }
     
     // load files
- 
-	ifstream InputXML (mapnik_config_file.c_str());
-	ofstream DestXML (Dest);
+    if ( ! boost:: filesystem::exists(Dest) ) {
+    	ifstream InputXML (mapnik_config_file.c_str());
+	    ofstream DestXML (Dest);
 	
-	if (InputXML && DestXML) {
-		if (InputXML.is_open()) {
-			string s ;
-			while (getline(InputXML, s)) {
-				DestXML << ReplaceString("@USER@", Username, s) << endl;
-			}
-		}
-	}
-	InputXML.close();
-	DestXML.close();
+    	if (InputXML && DestXML) {
+	    	if (InputXML.is_open()) {
+		    	string s ;
+			    while (getline(InputXML, s)) {
+				    DestXML << ReplaceString("@USER@", Username, s) << endl;
+    			}
+	    	}
+    	}
+	    InputXML.close();
+    	DestXML.close();
+    }
 	
 	return -1;
 }