Added InfoSwitches::writeOptionalEntries which enables the writing of optional keywords and values which are not present in the dictionary

Warning: generates a VERY large number of messages from OpenFOAM applications
Resolves bug-report http://www.openfoam.org/mantisbt/view.php?id=1473

etc/controlDict

@@ -38,6 +38,7 @@ InfoSwitches
     writePrecision  6;
     writeJobInfo    0;
     writeDictionaries 0;
+    writeOptionalEntries 0;
 
     // Allow case-supplied C++ code (#codeStream, codedFixedValue)
     allowSystemOperations   1;

src/OpenFOAM/db/dictionary/dictionary.C

@@ -34,8 +34,13 @@ License
 
 namespace Foam
 {
-defineTypeNameAndDebug(dictionary, 0);
+    defineTypeNameAndDebug(dictionary, 0);
-const dictionary dictionary::null;
+    const dictionary dictionary::null;
+
+    bool dictionary::writeOptionalEntries
+    (
+        debug::infoSwitch("writeOptionalEntries", 0)
+    );
 }
 
 

src/OpenFOAM/db/dictionary/dictionary.H

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2013 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2015 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -142,6 +142,10 @@ class dictionary
 {
     // Private data
 
+        //- If true write optional keywords and values
+        //  if not present in dictionary
+        static bool writeOptionalEntries;
+
         //- HashTable of the entries held on the DL-list for quick lookup
         HashTable<entry*> hashedEntries_;
 

src/OpenFOAM/db/dictionary/dictionaryTemplates.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2015 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -45,6 +45,14 @@ T Foam::dictionary::lookupOrDefault
     }
     else
     {
+        if (writeOptionalEntries)
+        {
+            IOInfoIn("dictionary::lookupOrDefault", *this)
+                << "Optional entry '" << keyword << "' is not present,"
+                << " returning the default value '" << deflt
+                << endl;
+        }
+
         return deflt;
     }
 }
@@ -67,6 +75,14 @@ T Foam::dictionary::lookupOrAddDefault
     }
     else
     {
+        if (writeOptionalEntries)
+        {
+            IOInfoIn("dictionary::lookupOrAddDefault", *this)
+                << "Optional entry '" << keyword << "' is not present,"
+                << " adding and returning the default value '" << deflt
+                << endl;
+        }
+
         add(new primitiveEntry(keyword, deflt));
         return deflt;
     }
@@ -76,13 +92,13 @@ T Foam::dictionary::lookupOrAddDefault
 template<class T>
 bool Foam::dictionary::readIfPresent
 (
-    const word& k,
+    const word& keyword,
     T& val,
     bool recursive,
     bool patternMatch
 ) const
 {
-    const entry* entryPtr = lookupEntryPtr(k, recursive, patternMatch);
+    const entry* entryPtr = lookupEntryPtr(keyword, recursive, patternMatch);
 
     if (entryPtr)
     {
@@ -91,6 +107,14 @@ bool Foam::dictionary::readIfPresent
     }
     else
     {
+        if (writeOptionalEntries)
+        {
+            IOInfoIn("dictionary::readIfPresent", *this)
+                << "Optional entry '" << keyword << "' is not present,"
+                << " the default value '" << val << "' will be used."
+                << endl;
+        }
+
         return false;
     }
 }