libtsxx [WP][FEATURE]: add TimeSeriesCollection::are_consistent

src/libs/libtsxx/tscollection.h

@@ -68,9 +68,40 @@ namespace ts {
       typedef ts::TimeSeries<typename Tseries::Tcoc, Theader> Tconsttimeseries;
       typedef std::list<Ttimeseries> Tbase;
       //!@}
+      
+      /*! \brief Check consistency
+       *
+       * Check the consistency of the time series in the collections based on
+       * header data. For example this can be used to check whether all time
+       * series have the same number of samples.
+       *
+       * \param comparer defines the header fields to be compared
+       * \return true, if comparer returns true for comparison of all pairs
+       *         of time series headers in the collection
+       */
+      bool are_consistent(const ::sff::WID2compare comparer) const;
 
   }; // class TimeSeriesCollection
 
+  /* ---------------------------------------------------------------------- */
+
+  template<typename T>
+    bool TimeSeriesCollection<T>::are_consistent(const ::sff::WID2compare comparer) const
+    {
+      bool retval=true;
+      if (this->size() > 1)
+      {
+        Tbase::const_iterator i_series=this->begin();
+        Theader refheader=i_series->header;
+        ++i_series;
+        while ((i_series != this->end()) && retval)
+        {
+          retval=comparer(refheader; i_series->header);
+        }
+      }
+      return(retval);
+    } // bool TimeSeriesCollection<T>::are_consistent(const ::sff::WID2compare comparer) const
+
 } // namespace ts
 
 #endif // TS_TSCOLLECTION_H_VERSION (includeguard)