core/tools.{cpp,h}: extract_dirname

algo/core/tools.cpp

@@ -178,6 +178,16 @@ string extract_from_label(string str, int field, string separator)
   return str.substr(found1+1, found2-found1-1);
 }
 
+
+string extract_dirname(string path) {
+  size_t pos_lastdir = path.find_last_of('/');
+  if (pos_lastdir != std::string::npos) {
+    path = path.substr(0, pos_lastdir);
+  }
+
+  return path;
+}
+
 string extract_basename(string path, bool remove_ext) {
   size_t pos_lastdir = path.find_last_of('/');
   if (pos_lastdir != std::string::npos) {

algo/core/tools.h

@@ -120,7 +120,12 @@ int dna_to_int(const string &, int size);
 string extract_from_label(string str, int field, string separator);
 
 /**
- * @return Extract basename of a file and extracts extension (by default
+ * @return Extract dirname of a file
+ */
+string extract_dirname(string path);
+
+/**
+ * @return Extract basename of a file and extracts extension (by default)
  */
 string extract_basename(string path, bool remove_ext = true);