fluentMeshToFoam.L

/*--------------------------------*- C++ -*----------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | Copyright (C) 2011-2014 OpenFOAM Foundation
     \\/     M anipulation  |
-------------------------------------------------------------------------------
License
    This file is part of OpenFOAM.

    OpenFOAM 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 3 of the License, or
    (at your option) any later version.

    OpenFOAM 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 OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.

Application
    fluentMeshToFoam

Description
    Converts a Fluent mesh to OpenFOAM format
    including multiple region and region boundary handling.

\*---------------------------------------------------------------------------*/

%{

#undef yyFlexLexer

 /* ------------------------------------------------------------------------- *\
   ------ local definitions
 \* ------------------------------------------------------------------------- */

#include "argList.H"
#include "Time.H"
#include "IStringStream.H"
#include "polyMesh.H"
#include "emptyPolyPatch.H"
#include "wallPolyPatch.H"
#include "symmetryPolyPatch.H"
#include "cellShape.H"
#include "faceSet.H"
#include "cellSet.H"
#include "meshTools.H"
#include "OFstream.H"

#include "readHexLabel.H"
#include "cellShapeRecognition.H"
#include "repatchPolyTopoChanger.H"


// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

using namespace Foam;

const scalar convertToMeters = 1.0;

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //


label dimensionOfGrid = 0;

label nPoints = 0;
label nFaces = 0;
label nCells = 0;

pointField points(0);
SLList<label> pointGroupZoneID;
SLList<label> pointGroupStartIndex;
SLList<label> pointGroupEndIndex;


faceList faces(0);
labelList owner(0);
labelList neighbour(0);
SLList<label> faceGroupZoneID;
SLList<label> faceGroupStartIndex;
SLList<label> faceGroupEndIndex;

labelList fluentCellModelID(0);
SLList<label> cellGroupZoneID;
SLList<label> cellGroupStartIndex;
SLList<label> cellGroupEndIndex;
SLList<label> cellGroupType;

// number of zones adjusted at run-time if necessary
label maxZoneID = 100;
label zoneIDBuffer = 10;

wordList patchTypeIDs(maxZoneID);
wordList patchNameIDs(maxZoneID);

// Dummy yywrap to keep yylex happy at compile time.
// It is called by yylex but is not used as the mechanism to change file.
// See <<EOF>>
#if YY_FLEX_SUBMINOR_VERSION < 34
extern "C" int yywrap()
#else
int yyFlexLexer::yywrap()
#endif
{
    return 1;
}

%}

one_space                  [ \t\f]
space                      {one_space}*
some_space                 {one_space}+
cspace                     ","{space}
spaceNl                    ({space}|\n|\r)*

alpha                      [_[:alpha:]]
digit                      [[:digit:]]
decDigit                   [[:digit:]]
octalDigit                 [0-7]
hexDigit                   [[:xdigit:]]

lbrac                      "("
rbrac                      ")"
quote                      \"
dash                       "-"
dotColonDash               [.:-]

schemeSpecialInitial       [!$%&*/:<=>?~_^#.]
schemeSpecialSubsequent    [.+-]
schemeSymbol               (({some_space}|{alpha}|{quote}|{schemeSpecialInitial})({alpha}|{quote}|{digit}|{schemeSpecialInitial}|{schemeSpecialSubsequent})*)


identifier                 {alpha}({alpha}|{digit})*
integer                    {decDigit}+
label                      [1-9]{decDigit}*
hexLabel                   {hexDigit}+
zeroLabel                  {digit}*

word                       ({alpha}|{digit}|{dotColonDash})*

exponent_part              [eE][-+]?{digit}+
fractional_constant        [-+]?(({digit}*"."{digit}+)|({digit}+".")|({digit}))

double                     ((({fractional_constant}{exponent_part}?)|({digit}+{exponent_part}))|0)

x                          {double}
y                          {double}
z                          {double}
scalar                     {double}
labelListElement           {space}{zeroLabel}
hexLabelListElement        {space}{hexLabel}
scalarListElement          {space}{double}
schemeSymbolListElement    {space}{schemeSymbol}
labelList                  ({labelListElement}+{space})
hexLabelList               ({hexLabelListElement}+{space})
scalarList                 ({scalarListElement}+{space})
schemeSymbolList           ({schemeSymbolListElement}+{space})

starStar                   ("**")
text                       ({space}({word}*{space})*)

dateDDMMYYYY               ({digit}{digit}"/"{digit}{digit}"/"{digit}{digit}{digit}{digit})
dateDDMonYYYY              ((({digit}{digit}{space})|({digit}{space})){alpha}*{space}{digit}{digit}{digit}{digit})
time                       ({digit}{digit}":"{digit}{digit}":"{digit}{digit})

versionNumber              ({digit}|".")*

comment                    {spaceNl}"(0"{space}
header                     {spaceNl}"(1"{space}
dimension                  {spaceNl}"(2"{space}
point                      {spaceNl}"(10"{space}
fluentFace                 {spaceNl}"(13"{space}
cell                       {spaceNl}"(12"{space}
zoneVariant1               {spaceNl}"(39"{space}
zoneVariant2               {spaceNl}"(45"{space}

unknownPeriodicFace        {spaceNl}"(17"{space}
periodicFace               {spaceNl}"(18"{space}
cellTree                   {spaceNl}"(58"{space}
faceTree                   {spaceNl}"(59"{space}
faceParents                {spaceNl}"(61"{space}

endOfSection               {space}")"{space}



 /* ------------------------------------------------------------------------- *\
                      -----  Exclusive start states -----
 \* ------------------------------------------------------------------------- */

%option stack

%x readComment
%x embeddedCommentState
%x readHeader
%x readDimension