Start writing a Load method to read the detector map

src/THcDetectorMap.cxx

@@ -17,7 +17,62 @@ using namespace std;
 
 ClassImp(THcDetectorMap)
 
+inline static bool IsComment( const string& s, string::size_type pos )
+{
+  return ( pos != string::npos && pos < s.length() &&
+	   (s[pos] == '!') );
+}
+
+
 void THcDetectorMap::Load(const char *fname)
 {
+  static const char* const here = "THcDetectorMap::Load";
+  static const char* const whtspc = " \t";
+
+  ifstream ifile;
+
+  ifile.open(fname);
+  if(!ifile.is_open) {
+    Error(here, "error opening detector map file %s",fname);
+    return;			// Need a success/failure argument?
+  }
+  string line;
+
+  Int_t roc=0;
+  Int_t nsubadd=0;
+  Int_t mask=0;
+  Int_t bsub=0;
+  Int_t detector=0;
+  Int_t slot=0;
+
+  while(getline(ifile,line)) {
+    // BLank line or comment
+    if(line.empty()
+       || (start = line.find_first_not_of( whtspc )) == string::npos
+       || IsComment(line, start) )
+      continue;
+  }
+  // Get rid of trailing comments and leading and trailing whitespace
+  cout << "MAPA: " << line << endl;
+  while ((pos = line.find_first_of("!", pos+1)) != string::npos) {
+    if(IsComment(line, pos)) {
+      line.erase(pos);
+      break;
+    }
+  }
+  cout << "MAPB: " << line << endl;
+
+  // Decide if line is ROC/NSUBADD/MASK/BSUB/DETECTOR/SLOT = something
+  // or chan, plane, counter[, signal]
+
+  
+  if((pos=line.find_first_of("=")) != string::npos) { // Setting parameter
+    char varname[100];
+    
+    
+  } else {			// Assume channel definition
+
+  }
+
 }