From a09d668878ef3fa40772579b354e5eb14c2fb070 Mon Sep 17 00:00:00 2001
From: Felipe Bordeu <felipe.bordeu@ec-nantes.fr>
Date: Tue, 28 Sep 2010 17:22:31 +0200
Subject: [PATCH 582/583] Read of the information elements

Code added to read and retreave information elements of a file
---
 libsrc/XdmfAttribute.cxx |   20 ++++++++++++++++++++
 libsrc/XdmfAttribute.h   |    4 +++-
 libsrc/XdmfGrid.cxx      |   33 +++++++++++++++++++++++++++++++++
 3 files changed, 56 insertions(+), 1 deletions(-)

diff --git a/libsrc/XdmfAttribute.cxx b/libsrc/XdmfAttribute.cxx
index 9c455c6..7bca63c 100644
--- a/libsrc/XdmfAttribute.cxx
+++ b/libsrc/XdmfAttribute.cxx
@@ -28,6 +28,7 @@
 #include "XdmfDataDesc.h"
 #include "XdmfArray.h"
 #include "XdmfDOM.h"
+#include "XdmfInformation.h"
 
 XdmfAttribute::XdmfAttribute() {
   this->SetElementName("Attribute");
@@ -82,6 +84,24 @@ XdmfDataItem * XdmfAttribute::GetDataItem(){
     return(di);
 }
 
+XdmfInformation * XdmfAttribute::GetInformation(const XdmfInt32 Index){
+    if(Index < this->DOM->FindNumberOfElements("Information", this->Element )){
+      XdmfInformation *di = NULL;
+      XdmfXmlNode Node =  this->DOM->FindElement( "Information", Index, this->Element, 0);
+      if(Node) {
+        di = new XdmfInformation;
+        di->SetDeleteOnGridDelete(true);
+        di->SetDOM( this->DOM );
+        di->SetElement( Node );
+        di->UpdateInformation();
+        return(di);
+      }
+    }else{
+        XdmfErrorMessage("Grid has " << this->DOM->FindNumberOfElements("Information", this->Element ) << " Information. Index " << Index << " is out of range");
+    }
+    return(NULL);
+}
+
 XdmfInt32
 XdmfAttribute::Build(){
     if(XdmfElement::Build() != XDMF_SUCCESS) return(XDMF_FAIL);
diff --git a/libsrc/XdmfAttribute.h b/libsrc/XdmfAttribute.h
index eaf4ee1..e733bd9 100644
--- a/libsrc/XdmfAttribute.h
+++ b/libsrc/XdmfAttribute.h
@@ -47,7 +47,7 @@ class XdmfTopology;
 class XdmfDataDesc;
 class XdmfDataItem;
 class XdmfArray;
-
+class XdmfInformation;
 //! Class for Scalar, Vector, and Tensor Computed Data
 /*!
 	XdmfAttribute is a Class that handles the Computed Values
@@ -142,6 +142,8 @@ public:
   XdmfInt32 Build();
 //! Release Big Data
  XdmfInt32 Release();
+//! Retreives a Information Element
+  XdmfInformation * GetInformation(const XdmfInt32 Index);
 protected:
   XdmfDataItem *GetDataItem();
 
diff --git a/libsrc/XdmfGrid.cxx b/libsrc/XdmfGrid.cxx
index f78ff05..be49a27 100644
--- a/libsrc/XdmfGrid.cxx
+++ b/libsrc/XdmfGrid.cxx
@@ -93,6 +93,11 @@ XdmfGrid::~XdmfGrid() {
     }
   }
   free(this->Sets);
+  for ( Index = 0; Index < this->NumberOfInformations; Index ++ ){
+    if (this->Informations[Index]->GetDeleteOnGridDelete()){
+        delete this->Informations[Index];
+    }
+  }
   free(this->Informations);
 }
 
@@ -622,6 +627,34 @@ if( this->NumberOfSets > 0 ){
     iSet->UpdateInformation();
     }
 }
+// Get Information
+XdmfInt32 OldNumberOfInformation = this->NumberOfInformations;
+this->NumberOfInformations = this->DOM->FindNumberOfElements("Information", this->Element );
+if( this->NumberOfInformations > 0 ){
+  XdmfInt32  Index;
+  XdmfInformation  *iInformation;
+  XdmfXmlNode    lInformationElement;
+
+  for ( Index = 0; Index < OldNumberOfInformation; Index ++ )
+    {
+    delete this->Informations[Index];
+    }
+  this->Informations = ( XdmfInformation **)realloc( this->Informations,
+      this->NumberOfInformations * sizeof( XdmfInformation * ));
+  for( Index = 0 ; Index < this->NumberOfInformations ; Index++ ){
+    iInformation = new XdmfInformation;
+    iInformation->SetDeleteOnGridDelete(true);
+    this->Informations[Index] = iInformation;
+    if (Index==0) {
+      lInformationElement = this->DOM->FindElement( "Information", Index, this->Element, 0);
+    } else {
+      lInformationElement = this->DOM->FindNextElement( "Information", lInformationElement, 0);
+    }
+    iInformation->SetDOM( this->DOM );    
+    iInformation->SetElement( lInformationElement );
+    iInformation->UpdateInformation();
+    }
+}
 
 return( XDMF_SUCCESS );
 }
-- 
1.7.0.4