first step towards nonlocal Pippard fitting

src/external/Nonlocal/PNL_StartupHandler.cpp

@@ -0,0 +1,270 @@
+/***************************************************************************
+
+  PNL_StartupHandler.cpp
+
+  Author: Andreas Suter
+  e-mail: andreas.suter@psi.ch
+
+  $Id$
+
+***************************************************************************/
+
+/***************************************************************************
+ *   Copyright (C) 2009 by Andreas Suter                                   *
+ *   andreas.suter@psi.ch                                                  *
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ *   This program is distributed in the hope that it will be useful,       *
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+ *   GNU General Public License for more details.                          *
+ *                                                                         *
+ *   You should have received a copy of the GNU General Public License     *
+ *   along with this program; if not, write to the                         *
+ *   Free Software Foundation, Inc.,                                       *
+ *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
+ ***************************************************************************/
+
+#include <iostream>
+#include <fstream>
+using namespace std;
+
+#include "PNL_StartupHandler.h"
+
+ClassImpQ(PNL_StartupHandler)
+
+//--------------------------------------------------------------------------
+// Constructor
+//--------------------------------------------------------------------------
+/**
+ *
+ */
+PNL_StartupHandler::PNL_StartupHandler()
+{
+  fStartupFileFound = false;
+  fStartupFilePath = "";
+
+  fFourierPoints = 0;
+  fTrimSpDataPath = TString("");
+
+  // get default path (for the moment only linux like)
+  char startup_path_name[128];
+
+  // check if the startup file is found in the current directory
+  strcpy(startup_path_name, "./nonlocal_startup.xml");
+  if (StartupFileExists(startup_path_name)) {
+    fStartupFileFound = true;
+    fStartupFilePath = TString(startup_path_name);
+  } else { // startup file is not found in the current directory
+    strncpy(startup_path_name, "/home/nemu/analysis/musrfit/src/external/Nonlocal/nonlocal_startup.xml", sizeof(startup_path_name));
+    if (StartupFileExists(startup_path_name)) {
+      fStartupFileFound = true;
+      fStartupFilePath = TString(startup_path_name);
+    }
+  }
+}
+
+//--------------------------------------------------------------------------
+// Destructor
+//--------------------------------------------------------------------------
+/**
+ *
+ */
+PNL_StartupHandler::~PNL_StartupHandler()
+{
+  fTrimSpDataPathList.clear();
+}
+
+//--------------------------------------------------------------------------
+// OnStartDocument
+//--------------------------------------------------------------------------
+/**
+ * <p>
+ */
+void PNL_StartupHandler::OnStartDocument()
+{
+  fKey = eEmpty;
+}
+
+//--------------------------------------------------------------------------
+// OnEndDocument
+//--------------------------------------------------------------------------
+/**
+ * <p>
+ */
+void PNL_StartupHandler::OnEndDocument()
+{
+  // check if anything was set, and if not set some default stuff
+  if (fFourierPoints == 0) {
+    fFourierPoints = 262144;
+    cout << endl << "PNL_StartupHandler::OnEndDocument: **WARNING** \"fourier_points\" not defined in nonlocal_startup.xml.";
+    cout << endl << "  will set it to " << fFourierPoints << "." << endl;
+  }
+}
+
+//--------------------------------------------------------------------------
+// OnStartElement
+//--------------------------------------------------------------------------
+/**
+ * <p>
+ *
+ * \param str
+ * \param attributes
+ */
+void PNL_StartupHandler::OnStartElement(const char *str, const TList *attributes)
+{
+  if (!strcmp(str, "fourier_points")) {
+    fKey = eFourierPoints;
+  } else if (!strcmp(str, "data_path")) {
+    fKey = eDataPath;
+  } else if (!strcmp(str, "energy")) {
+    fKey = eEnergy;
+  }
+}
+
+//--------------------------------------------------------------------------
+// OnEndElement
+//--------------------------------------------------------------------------
+/**
+ * <p>
+ *
+ * \param str
+ */
+void PNL_StartupHandler::OnEndElement(const char *str)
+{
+  fKey = eEmpty;
+}
+
+//--------------------------------------------------------------------------
+// OnCharacters
+//--------------------------------------------------------------------------
+/**
+ * <p>
+ *
+ * \param str
+ */
+void PNL_StartupHandler::OnCharacters(const char *str)
+{
+  TString tstr;
+
+  switch (fKey) {
+    case eFourierPoints:
+      tstr = str;
+      if (tstr.IsDigit()) {
+        fFourierPoints = tstr.Atoi();
+      } else {
+        cout << endl << "PNL_StartupHandler::OnCharacters: **ERROR** when finding fourier_points:";
+        cout << endl << "\"" << str << "\" is not a number, will ignore it and use the default value.";
+        cout << endl;
+      }
+      break;
+    case eDataPath:
+      fTrimSpDataPath = str;
+      break;
+    case eEnergy:
+      tstr = fTrimSpDataPath + TString(str);
+      fTrimSpDataPathList.push_back(tstr);
+      break;
+    default:
+      break;
+  }
+}
+
+//--------------------------------------------------------------------------
+// OnComment
+//--------------------------------------------------------------------------
+/**
+ * <p>
+ *
+ * \param str
+ */
+void PNL_StartupHandler::OnComment(const char *str)
+{
+  // nothing to be done for now
+}
+
+//--------------------------------------------------------------------------
+// OnWarning
+//--------------------------------------------------------------------------
+/**
+ * <p>
+ *
+ * \param str
+ */
+void PNL_StartupHandler::OnWarning(const char *str)
+{
+  cout << endl << "PNL_StartupHandler **WARNING** " << str;
+  cout << endl;
+}
+
+//--------------------------------------------------------------------------
+// OnError
+//--------------------------------------------------------------------------
+/**
+ * <p>
+ *
+ * \param str
+ */
+void PNL_StartupHandler::OnError(const char *str)
+{
+  cout << endl << "PNL_StartupHandler **ERROR** " << str;
+  cout << endl;
+}
+
+//--------------------------------------------------------------------------
+// OnFatalError
+//--------------------------------------------------------------------------
+/**
+ * <p>
+ *
+ * \param str
+ */
+void PNL_StartupHandler::OnFatalError(const char *str)
+{
+  cout << endl << "PNL_StartupHandler **FATAL ERROR** " << str;
+  cout << endl;
+}
+
+//--------------------------------------------------------------------------
+// OnCdataBlock
+//--------------------------------------------------------------------------
+/**
+ * <p>
+ *
+ * \param str
+ */
+void PNL_StartupHandler::OnCdataBlock(const char *str, Int_t len)
+{
+  // nothing to be done for now
+}
+
+//--------------------------------------------------------------------------
+// StartupFileExists
+//--------------------------------------------------------------------------
+/**
+ * <p>
+ *
+ */
+bool PNL_StartupHandler::StartupFileExists(char *fln)
+{
+  bool result = false;
+
+  ifstream ifile(fln);
+
+  if (ifile.fail()) {
+    result = false;
+  } else {
+    result = true;
+    ifile.close();
+  }
+
+  return result;
+}
+
+// -------------------------------------------------------------------------
+// end
+// -------------------------------------------------------------------------