Import Geant4 9.6.0 source tree

source/analysis/include/tools/wroot/free_seg

@@ -0,0 +1,86 @@
+// Copyright (C) 2010, Guy Barrand. All rights reserved.
+// See the file tools.license for terms.
+
+#ifndef tools_wroot_free_seg
+#define tools_wroot_free_seg
+
+#include "seek"
+#include "wbuf"
+
+#include <ostream>
+
+namespace tools {
+namespace wroot {
+
+class free_seg {
+  static uint32 START_BIG_FILE() {return 2000000000;}
+public:
+  free_seg(std::ostream& a_out,seek a_first,seek a_last)
+  :m_out(a_out),m_first(a_first),m_last(a_last){}
+  virtual ~free_seg(){}
+public:
+  free_seg(const free_seg& a_from)
+  :m_out(a_from.m_out),m_first(a_from.m_first),m_last(a_from.m_last)
+  {}
+  free_seg& operator=(const free_seg& a_from){
+    m_first = a_from.m_first;
+    m_last = a_from.m_last;
+    return *this;
+  }
+public:
+  seek first() const {return m_first;}
+  seek last() const {return m_last;}
+
+  unsigned int record_size() const {
+    //GB if(fLast>RIO_START_BIG_FILE) {
+    if((m_first>START_BIG_FILE())|| //GB
+       (m_last>START_BIG_FILE()) ){
+      return sizeof(short) +  2 * sizeof(seek);
+    } else {
+      return sizeof(short) +  2 * sizeof(seek32);
+    }
+  }
+
+  bool fill_buffer(wbuf& a_wb) {
+    short version = 1;
+
+    //GB if(fLast>START_BIG_FILE()) version += 1000;
+    if((m_first>START_BIG_FILE())||
+       (m_last>START_BIG_FILE())) version += 1000;
+
+    if(!a_wb.write(version)) return false;
+
+    if(version>1000) {
+      if(!a_wb.write(m_first)) return false;
+      if(!a_wb.write(m_last)) return false;
+    } else {
+      if(m_first>START_BIG_FILE()) { //GB
+        m_out << "tools::wroot::free_seg::fill_buffer :"
+             << " attempt to write big Seek "
+             << m_first << " on 32 bits."
+             << std::endl;
+        return false;
+      }
+      if(!a_wb.write((seek32)m_first)) return false;
+      if(m_last>START_BIG_FILE()) { //GB
+        m_out << "tools::wroot::free_seg::fill_buffer :"
+             << " attempt to write big seek "
+             << m_last << " on 32 bits."
+             << std::endl;
+        return false;
+      }
+      if(!a_wb.write((seek32)m_last)) return false;
+    }
+
+    return true;
+  }
+
+protected:
+  std::ostream& m_out;
+  seek m_first;  //First free word of segment
+  seek m_last;   //Last free word of segment
+};
+
+}}
+
+#endif