root/library/bdm/mex/mex_parser.h @ 660

#ifndef MXPARSE_H
#define MXPARSE_H


#include "../base/libconfig/libconfig.h++"
#include <itpp/itbase.h>
#include <itpp/itmex.h>
#include <stdlib.h>


using namespace itpp;
using namespace std;
using namespace libconfig;

//! Class for writing Settings into Matlab's mxArray
class UImxArray : public Config {
public:
        //! Build an instance of Config with fields filled from the given \a mxarray
        UImxArray ( const mxArray *mxarray ) : Config() {
                Setting & setting = this->getRoot(); //setting is a group
                if ( !mxIsStruct ( mxarray ) ) {
                        mexErrMsgTxt ( "Given mxArray is not a struct." );
                };
                //mexCallMATLAB(0, NULL, 1, (mxArray **) &mxarray, "dump");
                fillGroup ( setting, mxarray );
                setAutoConvert ( true );
        }
        UImxArray() : Config() {
                setAutoConvert ( true );
        }
        //! Add libconfig's \c list to the structure
        void addList ( const mxArray *mxarray, const char* name ) {
                Setting & setting = this->getRoot(); //setting is a group
                Setting & child = setting.add ( name, Setting::TypeList );
                fillList ( child, mxarray );
        }
        //! Add libconfig's \c group to the structure
        void addGroup ( const mxArray *mxarray, const char* name ) {
                Setting & setting = this->getRoot(); //setting is a group
                Setting & child = setting.add ( name, Setting::TypeGroup );
                fillGroup ( child, mxarray );
        }
        //! Operator for more convenient access to this Confic
        operator Setting&() {
                return getRoot();
        }
private:
        void storeNumeric ( Setting &setting, const mxArray *value, string key = "" ) {
                //TODO: integer matrices
                if ( !mxIsNumeric ( value ) ) {
                        mexErrMsgTxt ( "Given mxArray is not numeric." );
                };
                //treat empty matrices independently
                mat val;
                if (mxGetM(value)>0) {
                        val = mxArray2mat ( value );
                }
                if ( ( val.rows() == 1 ) && ( val.cols() == 1 ) ) {
                        Setting &child = ( key == "" ) ? setting.add ( Setting::TypeFloat )
                                         : setting.add ( key, Setting::TypeFloat );
                        child = val ( 0, 0 );
                } else {
                        Setting &child = ( key == "" ) ? setting.add ( Setting::TypeList )
                                         : setting.add ( key, Setting::TypeList );
                        Setting &label = child.add ( Setting::TypeString );
                        label = "matrix";
                        Setting &rows = child.add ( Setting::TypeInt );
                        Setting &cols = child.add ( Setting::TypeInt );
                        Setting &elements = child.add ( Setting::TypeArray );
                        cols = val.cols();
                        rows = val.rows();
                        for ( int i = 0; i < val.rows(); i++ ) {
                                for ( int j = 0; j < val.cols(); j++ ) {
                                        Setting &el = elements.add ( Setting::TypeFloat );
                                        el = val ( i, j );
                                }
                        }
                }
        }

        void fillGroup ( Setting &setting, const mxArray *mxarray ) {
                if ( !mxIsStruct ( mxarray ) ) {
                        mexErrMsgTxt ( "Given mxArray is not a struct." );
                };
                for ( int i = 0; i < mxGetNumberOfFields ( mxarray ); i++ ) {
                        const char *key = mxGetFieldNameByNumber ( mxarray, i );
                        mxArray *value = mxGetField ( mxarray, 0, key );
                        if ( mxIsChar ( value ) ) {
                                Setting &child = setting.add ( key, Setting::TypeString );
                                child = mxArray2string ( value );
                        }
                        if ( mxIsLogical ( value ) ) {
                                Setting &child = setting.add ( key, Setting::TypeBoolean );
                                child = ( bool ) mxArray2bin ( value );
                        }
                        if ( mxIsStruct ( value ) ) {
                                Setting &child = setting.add ( key, Setting::TypeGroup );
                                fillGroup ( child, value );
                        }
                        if ( mxIsCell ( value ) ) {
                                Setting &child = setting.add ( key, Setting::TypeList );
                                fillList ( child, value );
                        }
                        if ( mxIsNumeric ( value ) ) {
                                storeNumeric ( setting, value, ( string ) key );
                        }
                }
        }

        void fillList ( Setting &setting, const mxArray *mxarray ) {
                if ( !mxIsCell ( mxarray ) ) {
                        mexErrMsgTxt ( "Given mxArray is not a cell." );
                };
                for ( unsigned int i = 0; i < (unsigned int) mxGetNumberOfElements ( mxarray ); i++ ) {
                        mxArray *value = mxGetCell ( mxarray, i );
                        if ( mxIsChar ( value ) ) {
                                Setting &child = setting.add ( Setting::TypeString );
                                child = mxArray2string ( value );
                        }
                        if ( mxIsLogical ( value ) ) {
                                Setting &child = setting.add ( Setting::TypeBoolean );
                                child = ( bool ) mxArray2bin ( value );
                        }
                        if ( mxIsStruct ( value ) ) {
                                Setting &child = setting.add ( Setting::TypeGroup );
                                fillGroup ( child, value );
                        }
                        if ( mxIsCell ( value ) ) {
                                Setting &child = setting.add ( Setting::TypeList );
                                fillList ( child, value );
                        }
                        if ( mxIsNumeric ( value ) ) {
                                storeNumeric ( setting, value );
                        }
                }
        }
};

#endif //MXPARSE_H