ENH: use dictionary::readEntry for detection of input errors (#762, #1033)

- instead of   dict.lookup(name) >> val;
  can use      dict.readEntry(name, val);

  for checking of input token sizes.
  This helps catch certain types of input errors:

  {

      key1 ;                // <- Missing value
      key2 1234             // <- Missing ';' terminator
      key3 val;
  }

STYLE: readIfPresent() instead of 'if found ...' in a few more places.

applications/utilities/mesh/generation/extrude/extrudeMesh/extrudeMesh.C

@@ -362,7 +362,7 @@ int main(int argc, char *argv[])
                /"processor" + Foam::name(Pstream::myProcNo());
         }
         wordList sourcePatches;
-        dict.lookup("sourcePatches") >> sourcePatches;
+        dict.readEntry("sourcePatches", sourcePatches);
 
         if (sourcePatches.size() == 1)
         {
@@ -581,7 +581,7 @@ int main(int argc, char *argv[])
         labelList exposedPatchID;
         if (mode == PATCH)
         {
-            dict.lookup("exposedPatchName") >> backPatchName;
+            dict.readEntry("exposedPatchName", backPatchName);
             exposedPatchID.setSize
             (
                 extrudePatch.size(),

applications/utilities/mesh/generation/extrude/extrudeToRegionMesh/extrudeToRegionMesh.C

@@ -1514,7 +1514,7 @@ int main(int argc, char *argv[])
     const bool hasZones = dict.found("faceZones");
     if (hasZones)
     {
-        dict.lookup("faceZones") >> zoneNames;
+        dict.readEntry("faceZones", zoneNames);
         dict.readIfPresent("faceZonesShadow", zoneShadowNames);
 
         // Check
@@ -1528,7 +1528,7 @@ int main(int argc, char *argv[])
     }
     else
     {
-        dict.lookup("faceSets") >> zoneNames;
+        dict.readEntry("faceSets", zoneNames);
         dict.readIfPresent("faceSetsShadow", zoneShadowNames);
     }
 

applications/utilities/mesh/generation/foamyMesh/conformalVoronoiMesh/cellSizeControlSurfaces/cellSizeFunction/surfaceOffsetLinearDistance/surfaceOffsetLinearDistance.C

@@ -71,10 +71,9 @@ Foam::surfaceOffsetLinearDistance::surfaceOffsetLinearDistance
     totalDistance_(),
     totalDistanceSqr_()
 {
-    if (coeffsDict().found("totalDistanceCoeff"))
+    if (coeffsDict().readIfPresent("totalDistanceCoeff", totalDistance_))
     {
-        totalDistance_ =
-            coeffsDict().get<scalar>("totalDistanceCoeff") * defaultCellSize;
+        totalDistance_ *= defaultCellSize;
 
         if (coeffsDict().found("linearDistanceCoeff"))
         {
@@ -84,11 +83,10 @@ Foam::surfaceOffsetLinearDistance::surfaceOffsetLinearDistance
                 << nl << exit(FatalError) << endl;
         }
     }
-    else if (coeffsDict().found("linearDistanceCoeff"))
+    else if (coeffsDict().readIfPresent("linearDistanceCoeff", totalDistance_))
     {
-        totalDistance_ =
-            coeffsDict().get<scalar>("linearDistanceCoeff") * defaultCellSize
-            + surfaceOffset_;
+        totalDistance_ *= defaultCellSize;
+        totalDistance_ += surfaceOffset_;
     }
     else
     {

applications/utilities/mesh/manipulation/renumberMesh/renumberMesh.C

@@ -749,7 +749,7 @@ int main(int argc, char *argv[])
                 << endl;
         }
 
-        renumberDict.lookup("writeMaps") >> writeMaps;
+        renumberDict.readEntry("writeMaps", writeMaps);
         if (writeMaps)
         {
             Info<< "Writing renumber maps (new to old) to polyMesh." << nl