emobject.cpp

Go to the documentation of this file.

/*
 * Author: Steven Ludtke, 04/10/2003 (sludtke@bcm.edu)
 * Probable contributor: Liwei Peng (what dates?)
 * Contributing author: David Woolford 06/11/2007
 *
 * Copyright (c) 2000-2007 Baylor College of Medicine
 *
 * This software is issued under a joint BSD/GNU license. You may use the
 * source code in this file under either license. However, note that the
 * complete EMAN2 and SPARX software packages have some GPL dependencies,
 * so you are responsible for compliance with the licenses of these packages
 * if you opt to use BSD licensing. The warranty disclaimer below holds
 * in either instance.
 *
 * This complete copyright notice must be included in any revised version of the
 * source code. Additional authorship citations may be added, but existing
 * author citations must be preserved.
 *
 * This program 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 2 of the License, or
 * (at your option) any later version.
 *
 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 *
 * */

#include "emobject.h"
#include <cmath>
#ifdef WIN32
#define M_PI 3.14159265358979323846f
#endif

#include <algorithm>
// using copy

#include "util.h"

using namespace EMAN;

#include <iostream>
using std::cout;
using std::cerr;
using std::endl;

const float EMConsts::I2G = (float) (4.0 / (M_PI*M_PI));
const float EMConsts::I3G = (float) (6.4 / (M_PI*M_PI));
const float EMConsts::I4G = (float) (8.8 / (M_PI*M_PI));
const float EMConsts::I5G = (float) (10.4 / (M_PI*M_PI));
// This stolen from wikipedia.org
const double EMConsts::pi = 3.141592653589793238462643383279502884197169399;
const double EMConsts::deg2rad = pi/180.0;
const double EMConsts::rad2deg = 180.0/pi;


#include <sstream>
using std::stringstream;

#include "transform.h"
#include "ctf.h"

// Static init
map< EMObject::ObjectType, string>  EMObject::type_registry;

//-------------------------------EMObjectTypes-----------------------------------------
void EMObject::init()
{
        static bool first_construction = true;
        if ( first_construction )
        {
                // Initialize the the type registry once and for all
                type_registry[BOOL] = "BOOL";
                type_registry[INT] = "INT";
                type_registry[UNSIGNEDINT] = "UNSIGNEDINT";
                type_registry[FLOAT] = "FLOAT";
                type_registry[DOUBLE] = "DOUBLE";
                type_registry[STRING] = "STRING";
                type_registry[EMDATA] = "EMDATA";
                type_registry[XYDATA] = "XYDATA";
                type_registry[INTARRAY] = "INTARRAY";
                type_registry[FLOATARRAY] = "FLOATARRAY";
                type_registry[STRINGARRAY] = "STRINGARRAY";
                type_registry[TRANSFORM] = "TRANFORM";
                type_registry[CTF] = "CTF";
                type_registry[FLOAT_POINTER] = "FLOAT_POINTER";
                type_registry[INT_POINTER] = "INT_POINTER";
                type_registry[UNKNOWN] = "UNKNOWN";
                type_registry[VOID_POINTER] = "VOID_POINTER";
                first_construction = false;
        }
}

//-------------------------------EMObject--------------------------------------------

void EMObject::printInfo() const
{
        cout << "The address of my type is " << &type << endl;
        cout << " Now printing the enumerated values in type_registry " << endl;
        for( map< ObjectType, string>::const_iterator it = type_registry.begin(); it != type_registry.end(); ++it )
        {
                cout << it->first << " " << it->second << endl;
        }
        cout << "My type is " << to_str(type) << " and its enumerated value is " << type << endl;
        cout << "The address of the static type registry is " << &type_registry <<", it should be same for all EMObjects" << endl;
}

EMObject::~EMObject() {}

EMObject::EMObject() :
        d(0), type(UNKNOWN)
{
        init();
}

EMObject::EMObject(bool boolean) :
        b(boolean), type(BOOL)
{
        init();
}

EMObject::EMObject(int num) :
        n(num), type(INT)
{
        init();
}

EMObject::EMObject(unsigned int num) :
        ui(num), type(UNSIGNEDINT)
{
        init();
}

EMObject::EMObject(float ff) :
        type(FLOAT)
{
        if(Util::goodf(&ff)) {
                f = ff;
        }
        else{
                f = 0.0f;
        }
        init();
}

EMObject::EMObject(double dd) :
        type(DOUBLE)
{
        if(Util::goodf(&dd)) {
                d = dd;
        }
        else{
                d = 0.0;
        }
        init();
}

EMObject::EMObject(const char *s) :
        str(s), type(STRING)
{
        init();
}

EMObject::EMObject(const string & s) :
        str(s), type(STRING)
{
        init();
}

EMObject::EMObject(float *f) :
        fp(f), type(FLOAT_POINTER)
{
        init();
}

EMObject::EMObject(int *i) :
        ip(i), type(INT_POINTER)
{
        init();
}

EMObject::EMObject(void *v) :
        vp(v), type(VOID_POINTER)
{
        init();
}

EMObject::EMObject(EMData * em) :
        emdata(em), type(EMDATA)
{
        init();
}

EMObject::EMObject(XYData * xy) :
        xydata(xy), type(XYDATA)
{
        init();
}
EMObject::EMObject(Transform* t) :
        farray(t->get_matrix()), type(TRANSFORM)
{
        init();
}

EMObject::EMObject(Ctf * ctf) :
        str(ctf->to_string()), type(CTF)
{
        init();
}

EMObject::EMObject(const vector< int >& v ) :
        iarray(v), type(INTARRAY)
{
        init();
}

EMObject::EMObject(const vector < float >&v) :
        farray(v), type(FLOATARRAY)
{
        init();
}

EMObject:: EMObject(const vector <string>& sarray) :
        strarray(sarray), type(STRINGARRAY)
{
        init();
}

EMObject::operator bool () const
{
        if (type == BOOL) {
                return b;
        }
        else if (type == INT) {
                return n != 0;
        }
        else if (type == UNSIGNEDINT) {
                return ui != 0;
        }
        else if (type == FLOAT) {
                return f != 0;
        }
        else if (type == DOUBLE) {
                return d != 0;
        }
        else if (type == EMDATA) {
                return emdata != 0;
        }
        else if (type == XYDATA) {
                return xydata != 0;
        }
        else if (type == FLOAT_POINTER) {
                return fp != 0;
        }
        else if (type == INT_POINTER) {
                return ip != 0;
        }
        else if (type == VOID_POINTER) {
                return vp != 0;
        }
//      else if (type == TRANSFORM) {
//              return transform != 0;
//      }
        // It seemed unconventional to return a boolean for the stl objects
        else {
                if (type != UNKNOWN) {
                        throw TypeException("Cannot convert to bool this data type ",
                                                                get_object_type_name(type));
                }
        }
        return 0;
}

EMObject::operator int () const
{
        if (type == INT) {
                return n;
        }
        else if (type == UNSIGNEDINT) {
                return (int) ui;
        }
        else if (type == FLOAT) {
                return (int) f;
        }
        else if (type == DOUBLE) {
                return (int) d;
        }
        else if (type == BOOL) {
                return b?1:0;
        }
        else {
                if (type != UNKNOWN) {
                        throw TypeException("Cannot convert to int this data type ",
                                                                get_object_type_name(type));
                }
        }
        return 0;
}

EMObject::operator unsigned int () const
{
        if (type == UNSIGNEDINT) {
                return (unsigned int) ui;
        }
        else {
                if (type != UNKNOWN) {
                        throw TypeException("Cannot convert to int this data type ",
                                                                get_object_type_name(type));
                }
        }
        return 0;
}

EMObject::operator float () const
{
        if (type == BOOL) {
                return b?1.0f:0.0f;
        }
        else if (type == FLOAT) {
                return f;
        }
        else if (type == INT) {
                return (float) n;
        }
        else if (type == UNSIGNEDINT) {
                return (float) ui;
        }
        else if (type == DOUBLE) {
                return (float) d;
        }
        else {
                if (type != UNKNOWN) {
                        throw TypeException("Cannot convert to float from this data type",
                                                                get_object_type_name(type));
                }
        }

        return 0;
}

EMObject::operator double () const
{
        if (type == BOOL) {
        return b?1.0:0.0;
        }
        else if (type == DOUBLE) {
                return d;
        }
        else if (type == INT) {
                return (double) n;
        }
        else if (type == UNSIGNEDINT) {
                return (double) ui;
        }
        else if (type == FLOAT) {
                return (double) f;
        }
        else {
                if (type != UNKNOWN) {
                        throw TypeException("Cannot convert to double from this data type",
                                                                get_object_type_name(type));
                }
        }
        return 0;
}

EMObject::operator int * () const
{
        if (type != INT_POINTER)
        {
                if (type != UNKNOWN)
                        throw TypeException("Cannot convert to float pointer from this data type",
                                                                get_object_type_name(type));

                return 0;
        }

        return ip;
}


EMObject::operator float * () const
{
        if (type != FLOAT_POINTER)
        {
                if (type != UNKNOWN)
                        throw TypeException("Cannot convert to float pointer from this data type",
                                                                get_object_type_name(type));

                return 0;
        }

        return fp;
}

// MAYBE REMOVE? FIXME
EMObject::operator void * () const
{
        if (type == VOID_POINTER) return vp;
        else if (type == FLOAT_POINTER) return (void *)fp;
        else if (type == INT_POINTER) return (void *)ip;
        else if (type == EMDATA) return (void *) emdata;
        else if (type == XYDATA) return (void *) xydata;
//      else if (type == TRANSFORM) return (void *) transform;
        else throw TypeException("Cannot convert to void pointer from this data type", get_object_type_name(type));
}

EMObject::operator const char * () const
{
        if (type != STRING && type != CTF) {
                stringstream ss;
                string return_string;
                if ( type == INT )
                {
                        ss << n;
                        ss >> return_string;
                        return return_string.c_str();
                }
                if ( type == UNSIGNEDINT )
                {
                        ss << ui;
                        ss >> return_string;
                        return return_string.c_str();
                }
                else
                if ( type == FLOAT )
                {
                        ss << f;
                        ss >> return_string;
                        return return_string.c_str();
                }
                else
                if ( type == DOUBLE )
                {
                        ss << d;
                        ss >> return_string;
                        return return_string.c_str();
                }
                else if (type != UNKNOWN) {
                        throw TypeException("Cannot convert to string from this data type",
                                                                get_object_type_name(type));
                }

                return "";
        }
        return str.c_str();
}

EMObject::operator EMData * () const
{
        if (type != EMDATA) {
                if (type != UNKNOWN) {
                        throw TypeException("Cannot convert to EMData* from this data type",
                                   get_object_type_name(type));
                }
                return 0;
        }
        return emdata;
}

EMObject::operator XYData * () const
{
        if (type != XYDATA) {
                if (type != UNKNOWN) {
                        throw TypeException("Cannot convert to XYData* from this data type",
                                   get_object_type_name(type));
                }
                return 0;
        }
        return xydata;
}

EMObject::operator Transform* () const
{
        if(type != TRANSFORM) {
                if(type != UNKNOWN) {
                        throw TypeException("Cannot convert to TRANSFORM* from this data type",
                                                                get_object_type_name(type));
                }
        }
        Transform * transform = new Transform();
        transform->set_matrix(farray);
        return transform;
}

EMObject::operator Ctf* () const
{
/*      if(type != CTF) {
                if(type != CTF) {
                        throw TypeException("Cannot convert to TRANSFORM* from this data type",
                                                                get_object_type_name(type));
                }
        }*/
        Ctf * ctf = 0;
        if(str[0] == 'O') {
                ctf = new EMAN1Ctf();
                ctf->from_string(str);
        }
        else if(str[0] == 'E') {
                ctf = new EMAN2Ctf();
                ctf->from_string(str);
        }
        return ctf;
}

EMObject::operator vector<int>() const
{
    if( type != INTARRAY )
    {
        if( type != UNKNOWN ) {
                throw TypeException("Cannot convert to vector<int> from this data type", get_object_type_name(type) );
                }
                return vector<int>();
    }
    return iarray;
}

EMObject::operator vector < float > () const
{
        if (type != FLOATARRAY) {
                if (type != UNKNOWN) {
                        throw TypeException("Cannot convert to vector<float> from this data type",
                                                                get_object_type_name(type));
                }
                return vector < float >();
        }
        return farray;
}

EMObject::operator vector<string> () const
{
        if (type != STRINGARRAY) {
                if (type != UNKNOWN) {
                        throw TypeException("Cannot convert to vector<string> from this data type",
                                                                get_object_type_name(type));
                }
                return vector<string>();
        }
        return strarray;
}

bool EMObject::is_null() const
{
        return (type == UNKNOWN);
}

string EMObject::to_str() const
{
        return to_str(type);
}

string EMObject::to_str(ObjectType argtype) const
{
        if (argtype == STRING) {
                return str;
        }
        else {
                char tmp_str[32];
                if (argtype == BOOL) {
                        if (b)
                                sprintf(tmp_str, "true");
                        else
                                sprintf(tmp_str, "false");
                }
                else if (argtype == INT) {
                        sprintf(tmp_str, "%d", n);
                }
                else if (argtype == UNSIGNEDINT) {
                        sprintf(tmp_str, "%d", ui);
                }
                else if (argtype == FLOAT) {
                        sprintf(tmp_str, "%f", f);
                }
                else if (argtype == DOUBLE) {
                        sprintf(tmp_str, "%f", d);
                }
                else if (argtype == EMDATA) {
                        sprintf(tmp_str, "EMDATA");
                }
                else if (argtype == FLOAT_POINTER) {
                        sprintf(tmp_str, "FLOAT_POINTER");
                }
                else if (argtype == INT) {
                        sprintf(tmp_str, "INT_POINTER");
                }
                else if (argtype == VOID_POINTER) {
                        sprintf(tmp_str, "VOID_POINTER");
                }
                else if (argtype == XYDATA) {
                        sprintf(tmp_str, "XYDATA");
                }
                else if (argtype == INTARRAY) {
                        sprintf(tmp_str, "INTARRAY");
                }
                else if (argtype == FLOATARRAY) {
                        sprintf(tmp_str, "FLOATARRAY");
                }
                else if (argtype == STRINGARRAY) {
                        sprintf(tmp_str, "STRINGARRAY");
                }
                else if (argtype == TRANSFORM) {
                        sprintf(tmp_str, "TRANSFORMD");
                }
                else if (argtype == CTF) {
                        sprintf(tmp_str, "CTF");
                }
                else if (argtype == UNKNOWN) {
                        sprintf(tmp_str, "UNKNOWN");
                }
                else {
                        LOGERR("No such EMObject defined");
                        throw NotExistingObjectException("EMObject", "unknown type");
                }
                return string(tmp_str);
        }
}

string EMObject::get_object_type_name(ObjectType t)
{
#ifdef _WIN32
        if (t == BOOL) {
                return "BOOL";
        }else
        if ( t == INT){
                return "INT";
        }else
        if ( t == UNSIGNEDINT){
                return "UNSIGNEDINT";
        } else
        if ( t == FLOAT){
                return "FLOAT";
        } else
        if ( t == DOUBLE){
                return "DOUBLE";
        }else
        if ( t == STRING){
                return "STRING";
        }else
        if ( t == EMDATA){
                return "EMDATA";
        }
        else
        if ( t == XYDATA){
                return "XYDATA";
        }else
        if ( t == INTARRAY){
                return "INTARRAY";
        }else
        if ( t == FLOATARRAY){
                return "FLOATARRAY";
        } else
        if ( t == STRINGARRAY){
                return "STRINGARRAY";
        }else
        if ( t == TRANSFORM){
                return "TRANSFORM";
        }else
        if ( t == CTF){
                return "CTF";
        }else
        if ( t == FLOAT_POINTER){
                return "FLOAT_POINTER";
        }else
        if ( t == INT_POINTER){
                return "INT_POINTER";
        }else
        if ( t == UNKNOWN){
                return "UNKNOWN";
        } else
        if ( t == VOID_POINTER){
                return "VOID_POINTER";
        }
        else {
                LOGERR("No such EMObject defined");
                throw NotExistingObjectException("EMObject", "unknown type");
        }

#else

        if  ( type_registry.find(t) != type_registry.end() )
                return type_registry[t];
        else
                LOGERR("No such EMObject defined");
                throw NotExistingObjectException("EMObject", "unknown type");
#endif  //_WIN32
}

bool EMAN::operator==(const EMObject &e1, const EMObject & e2)
{

        if (e1.type != e2.type) {
                return false;
        }

        switch (e1.type) {
        case  EMObject::BOOL:
                return (e1.b == e2.b);
        break;
        case  EMObject::INT:
                return (e1.n == e2.n);
        break;
        case  EMObject::UNSIGNEDINT:
                return (e1.ui == e2.ui);
        break;
        case  EMObject::FLOAT:
                return (e1.f == e2.f);
        break;
        case  EMObject::DOUBLE:
                return (e1.d == e2.d);
        break;
        case EMObject::CTF:
        case  EMObject::STRING:
                return (e1.str == e2.str);
        break;
        case  EMObject::FLOAT_POINTER:
                return (e1.fp == e2.fp);
        break;
        case  EMObject::INT_POINTER:
                return (e1.ip == e2.ip);
        break;
        case  EMObject::VOID_POINTER:
                return (e1.vp == e2.vp);
        break;
        case  EMObject::EMDATA:
                return (e1.emdata == e2.emdata);
        break;
        case  EMObject::XYDATA:
                return (e1.xydata == e2.xydata);
        break;
        case  EMObject::TRANSFORM:
        case  EMObject::FLOATARRAY:
                if (e1.farray.size() == e2.farray.size()) {
                        for (size_t i = 0; i < e1.farray.size(); i++) {
                                if (e1.farray[i] != e2.farray[i]) {
                                        return false;
                                }
                        }
                        return true;
                }
                else {
                        return false;
                }
        break;
        case  EMObject::INTARRAY:
                if (e1.iarray.size() == e2.iarray.size()) {
                        for (size_t i = 0; i < e1.iarray.size(); i++) {
                                if (e1.iarray[i] != e2.iarray[i]) {
                                        return false;
                                }
                        }
                        return true;
                }
        break;
        case  EMObject::STRINGARRAY:
                if (e1.strarray.size() == e2.strarray.size()) {
                        for (size_t i = 0; i < e1.strarray.size(); i++) {
                                if (e1.strarray[i] != e2.strarray[i]) {
                                        return false;
                                }
                        }
                        return true;
                }
                else {
                        return false;
                }
        break;
        case  EMObject::UNKNOWN:
                // UNKNOWN really means "no type" and if two objects both have
                // type UNKNOWN they really are the same
                return (e1.type == e2.type);
        break;
        default:
                return false;
        break;
        }
        return false;
}

bool EMAN::operator!=(const EMObject &e1, const EMObject & e2)
{
        return !(e1 == e2);
}

// Copy constructor
EMObject::EMObject(const EMObject& that)
{
        // init isn't necessary because that must have already called it!
        *this = that;
}


// Assignment operator -  - copies only the variable associated with the type of the argument.
// It would be possible just to do a dumb copy of everything, but that seems opposed to
// the concept of an EMObject, which is always of a single type.
EMObject& EMObject::operator=( const EMObject& that )
{

// This test breaks assignment when either the current or assigned values are (float)nan
// it's also somewhat inherently stupid, since testing for equivalence may cost as much
// as assignment.
//      if ( *this != that )
        {
                // First store the type of the input, At first I forgot to do this and it was a very
                // difficult bug to track down
                type = that.type;

//              if ( type != this_type ) throw


                switch (type)
                {
                case BOOL:
                        b = that.b;
                break;
                case INT:
                        n = that.n;
                break;
                case UNSIGNEDINT:
                        ui = that.ui;
                break;
                case FLOAT:
                        f = that.f;
                break;
                case DOUBLE:
                        d = that.d;
                break;
                case CTF:
                case STRING:
                        str = that.str;
                break;
                case FLOAT_POINTER:
                        // Warning - Pointer address copy.
                        fp = that.fp;
                break;
                case INT_POINTER:
                // Warning - Pointer address copy.
                        ip = that.ip;
                break;
                case VOID_POINTER:
                        // Warning - Pointer address copy.
                        vp = that.vp;
                break;
                case EMDATA:
                        // Warning - Pointer address copy.
                        emdata = that.emdata;
                break;
                case XYDATA:
                        // Warning - Pointer address copy.
                        xydata = that.xydata;
                break;
                case TRANSFORM:
                case FLOATARRAY:
                        farray = that.farray;
                break;
                case INTARRAY:
                        iarray = that.iarray;
                break;
                case STRINGARRAY:
                        strarray = that.strarray;
                break;
                case UNKNOWN:
                        // This is possible, nothing should happen
                        // The EMObject's default constructor has been called and
                        // as yet has no type - doing nothing is exactly as the
                        // the assignment operator should work.
                break;
                default:
                        LOGERR("No such EMObject defined");
                        throw NotExistingObjectException("EMObject", "unknown type");
                break;
                }
        }
//      else
//      {
//              cerr << "Warning - attempt to assign EMObject onto itself. No action taken" << endl;
//              cerr << "My type is " << get_object_type_name(type) << endl;
//      }

        return *this;
}

//-------------------------------TypeDict--------------------------------------------

void TypeDict::dump()
{
        map < string, string >::iterator p;
        for (p = type_dict.begin(); p != type_dict.end(); p++) {
                printf("\t%s    %s  %s\n",
                           p->first.c_str(), p->second.c_str(), desc_dict[p->first].c_str());
        }
}

//-------------------------------Dict--------------------------------------------

Dict::Dict(const Dict& that)
{
        *this = that;
}

Dict& Dict::operator=(const Dict& that)
{
        if ( this != &that )
        {
                dict.clear();
                copy(that.begin(), that.end(), inserter(dict, dict.begin()));
                // or use this
                // dict.insert( that.begin(), that.end());
        }
        else
        {
                cerr << "Warning - attempted to assign a Dict object to itself. No action taken" << endl;
        }

        return *this;
}

bool EMAN::operator==(const Dict& d1, const Dict& d2)
{
        // Just make use of map's version of operator==
        return (d1.dict == d2.dict);
}

bool EMAN::operator!=(const Dict& d1, const Dict& d2)
{
        return !(d1 == d2);
}


// Iterator support
// This is just a wrapper, everything is inherited from the map<string,EMObject>::iterator
// so the interface is the same as you would expect
// iterator support added by d.woolford May 2007

Dict::iterator Dict::begin( void )
{
        return iterator( dict.begin() );
}

Dict::const_iterator Dict::begin( void ) const
{
        return const_iterator( (map < string, EMObject >::const_iterator) dict.begin() );
}

// Wraps map.find(const string& key)
Dict::iterator Dict::find( const string& key )
{
        return iterator( dict.find(key) );
}

Dict::iterator Dict::end( void )
{
        return iterator( dict.end() );
}

Dict::const_iterator Dict::end( void ) const
{
        return const_iterator( (map < string, EMObject >::const_iterator)dict.end() );
}

Dict::const_iterator Dict::find( const string& key ) const
{
        return const_iterator( (map < string, EMObject >::const_iterator)dict.find(key) );
}

//
// iterator
//
Dict::iterator::iterator( map< string, EMObject >::iterator parent_it  ) :
        map< string, EMObject >::iterator( parent_it )
{
}


Dict::iterator::iterator( const iterator& that ) :
        map < string, EMObject >::iterator( that )
{
}


Dict::iterator& Dict::iterator::operator=( const iterator& that )
{
        if( this != &that )
        {
                map < string, EMObject >::iterator::operator=( that );
        }
        return *this;
}

//
// const_iterator
//

Dict::const_iterator::const_iterator( const map < string, EMObject >::const_iterator parent_it  ) :
        map< string, EMObject >::const_iterator( parent_it )
{
}

Dict::const_iterator::const_iterator( const Dict::iterator& it ) :
        map< string, EMObject >::const_iterator(it)
{
}

Dict::const_iterator::const_iterator( const const_iterator& it ) :
        map< string, EMObject >::const_iterator(it)
{
}

Dict::const_iterator& Dict::const_iterator::operator=( const const_iterator& that )
{
        if( this != &that )
        {
                map < string, EMObject >::const_iterator::operator=( that );
        }
        return *this;
}

EMObject Dict::get_ci(const string & key) const
{
        string lower_key = Util::str_to_lower(key);

        for (map < string, EMObject >::const_iterator it = dict.begin(); it != dict.end(); ++it ) {
                string lower = Util::str_to_lower(it->first);
                if (lower == lower_key) return it->second;
        }

        throw NotExistingObjectException("EMObject", "Nonexisting key (" + key + ") in Dict");
}

bool Dict::has_key_ci(const string & key) const
{
        string lower_key = Util::str_to_lower(key);

        for (map < string, EMObject >::const_iterator it = dict.begin(); it != dict.end(); ++it ) {
                string lower = Util::str_to_lower(it->first);
                if (lower == lower_key) return true;
        }
        return false;
}