WIP Define LoadSQW2 as a file loader algorithm.

Refs #11056

Framework/MDAlgorithms/inc/MantidMDAlgorithms/LoadSQW2.h

@@ -1,7 +1,7 @@
 #ifndef MANTID_MDALGORITHMS_LOADSQW2_H_
 #define MANTID_MDALGORITHMS_LOADSQW2_H_
 
-#include "MantidAPI/Algorithm.h"
+#include "MantidAPI/IFileLoader.h"
 #include "MantidDataObjects/MDEvent.h"
 #include "MantidDataObjects/MDEventWorkspace.h"
 #include "MantidKernel/BinaryStreamReader.h"
@@ -41,7 +41,7 @@ namespace MDAlgorithms {
   * File change history is stored at: <https://github.com/mantidproject/mantid>
   * Code Documentation is available at: <http://doxygen.mantidproject.org>
   */
-class DLLExport LoadSQW2 : public API::Algorithm {
+class DLLExport LoadSQW2 : public API::IFileLoader<Kernel::FileDescriptor> {
 public:
   LoadSQW2();
   ~LoadSQW2();
@@ -50,6 +50,7 @@ class DLLExport LoadSQW2 : public API::Algorithm {
   virtual int version() const;
   virtual const std::string category() const;
   virtual const std::string summary() const;
+  virtual int confidence(Kernel::FileDescriptor &descriptor) const;
 
 private:
   /// Local typedef for

Framework/MDAlgorithms/src/LoadSQW2.cpp

@@ -5,6 +5,7 @@
 
 #include "MantidAPI/FileProperty.h"
 #include "MantidAPI/Progress.h"
+#include "MantidAPI/RegisterFileLoader.h"
 #include "MantidGeometry/Crystal/OrientedLattice.h"
 #include "MantidGeometry/Instrument/Goniometer.h"
 #include "MantidGeometry/MDGeometry/MDHistoDimension.h"
@@ -34,14 +35,15 @@ using Kernel::V3D;
 constexpr int64_t NPIX_CHUNK = 150000;
 
 // Register the algorithm into the AlgorithmFactory
-DECLARE_ALGORITHM(LoadSQW2)
+DECLARE_FILELOADER_ALGORITHM(LoadSQW2)
 
 //------------------------------------------------------------------------------
 // Public methods
 //------------------------------------------------------------------------------
 /// Default constructor
 LoadSQW2::LoadSQW2()
-    : API::Algorithm(), m_file(), m_reader(), m_outputWS(), m_progress() {}
+    : API::IFileLoader<Kernel::FileDescriptor>(), m_file(), m_reader(),
+      m_outputWS(), m_progress() {}
 
 /// Default destructor
 LoadSQW2::~LoadSQW2() {}
@@ -64,6 +66,26 @@ const std::string LoadSQW2::summary() const {
          "Horace.";
 }
 
+/**
+* Return the confidence with this algorithm can load the file
+* @param descriptor A descriptor for the file
+* @returns An integer specifying the confidence level. 0 indicates it will not
+* be used
+*/
+int LoadSQW2::confidence(Kernel::FileDescriptor &descriptor) const {
+  // only .sqw can be considered
+  const std::string &extn = descriptor.extension();
+  if (extn.compare(".sqw") != 0)
+    return 0;
+
+  if (descriptor.isAscii()) {
+    // Low so that others may try
+    return 10;
+  }
+  // Beat v1
+  return 81;
+}
+
 //------------------------------------------------------------------------------
 // Private methods
 //------------------------------------------------------------------------------
@@ -441,7 +463,6 @@ void LoadSQW2::addEventFromBuffer(const float *pixel) {
   m_outputWS->addEvent(MDEvent<4>(signal, error * error, irun, idet, centres));
 }
 
-
 /**
  * Transform the given coordinates from U to the HKL frame
  * using the transformation defined for the given run