Binary conversion from pointFiled files to vtk format

- all vtk files are stored in the /particles/ folder
- terminal output is modified
- time series file are added. files with extntions .vtk.series can be loaded into paraview

utilities/pFlowToVTK/fileSeries.cpp

@@ -0,0 +1,85 @@
+#include "fileSeries.hpp"
+#include "oFstream.hpp"
+#include "streams.hpp"
+
+void pFlow::PFtoVTK::fileSeries::writeOneBaseName(const word &baseName)
+{
+    auto& fList = timeFiles_[baseName];
+    word fileName = baseName + ".vtk.series";
+    oFstream os(destDir_+fileName);
+    
+    REPORT(1)<<"Writing to "<<os.name()<<END_REPORT;
+
+    os<<"{\n";
+    os<<"    \"file-series-version\" : \"1.0\",\n";
+    os<<"    \"files\" : [\n";
+    const auto lastItem = std::prev(fList.end());
+    for(auto iter = fList.begin(); iter != fList.end(); ++iter)
+    {
+        os<<"        {\"name\" : \"";
+        os<< iter->second;
+        os<<"\", \"time\" :";
+        os<<iter->first;
+        if(iter == lastItem)
+            os<<"}\n";
+        else
+            os<<"},\n";
+    }
+    os<<"    ]\n";
+    os<<"}\n";
+   
+}
+
+pFlow::PFtoVTK::fileSeries::fileSeries(const fileSystem dest)
+    : destDir_(dest)
+{
+    
+
+}
+
+pFlow::PFtoVTK::fileSeries::~fileSeries()
+{
+    REPORT(0)<<"Writing time series files..."<<END_REPORT;
+    for(const auto& fSeries:timeFiles_)
+    {
+        writeOneBaseName(fSeries.first);
+    }
+}
+
+bool pFlow::PFtoVTK::fileSeries::addTimeFile(const word& baseName, real time, const word &fileName)
+{
+    fileSystem fs(fileName);
+    word relFileName = fs.relative(destDir_).wordPath();
+
+    if( auto [iter, found]=timeFiles_.findIf(baseName); found )
+    {
+        return iter->second.insertIf(time, relFileName);
+    }
+    else
+    {   
+        TimeFileType newList;
+        newList.insertIf(time, relFileName);
+        return timeFiles_.insertIf(baseName, newList);
+    }
+    
+}
+
+bool pFlow::PFtoVTK::fileSeries::addTimeFile(const wordList &baseNames, real time, const wordList &fileNames)
+{
+    if(baseNames.size()!= fileNames.size() )
+    {
+        fatalErrorInFunction<<"sizes of base names and file names are not equal\n";
+        return false;
+    }
+
+    for(size_t i=0; i<baseNames.size(); i++)
+    {
+        if(!addTimeFile(baseNames[i], time, fileNames[i]))
+        {
+            fatalErrorInFunction<<"Error in adding multiple time files\n";
+            return false;
+        }
+    }
+
+    return true;
+}