mirror of
https://github.com/IfcOpenShell/IfcOpenShell.git
synced 2026-08-12 02:23:34 +00:00
Thomas Krijnen
281 lines
10 KiB
C++
281 lines
10 KiB
C++
/********************************************************************************
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* *
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* This file is part of IfcOpenShell. *
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* *
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* IfcOpenShell is free software: you can redistribute it and/or modify *
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* it under the terms of the Lesser GNU General Public License as published by *
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* the Free Software Foundation, either version 3.0 of the License, or *
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* (at your option) any later version. *
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* *
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* IfcOpenShell is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* Lesser GNU General Public License for more details. *
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* *
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* You should have received a copy of the Lesser GNU General Public License *
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* along with this program. If not, see <http://www.gnu.org/licenses/>. *
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* *
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********************************************************************************/
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/********************************************************************************
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* *
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* This file provides functions for loading an IFC file into memory and access *
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* its entities either by ID, by an Ifc2x3::Type or by reference *
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* *
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********************************************************************************/
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#ifndef IFCPARSE_H
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#define IFCPARSE_H
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#define IFCOPENSHELL_VERSION "0.3.0-rc3"
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#include <string>
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#include <sstream>
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#include <iostream>
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#include <vector>
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#include <fstream>
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#include <cstring>
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#include <map>
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#include "../ifcparse/SharedPointer.h"
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#include "../ifcparse/IfcCharacterDecoder.h"
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#include "../ifcparse/IfcUtil.h"
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#include "../ifcparse/Ifc2x3.h"
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#include "../ifcparse/IfcFile.h"
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namespace IfcParse {
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class Entity;
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class Entities;
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typedef Entity* EntityPtr;
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typedef SHARED_PTR<Entities> EntitiesPtr;
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typedef unsigned int Token;
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/// Provides functions to convert Tokens to binary data
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/// Tokens are merely offsets to where they can be read in the file
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class TokenFunc {
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private:
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static bool startsWith(Token t, char c);
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public:
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/// Returns the offset at which the token is read from the file
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static unsigned int Offset(Token t);
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/// Returns whether the token can be interpreted as a string
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static bool isString(Token t);
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/// Returns whether the token can be interpreted as an identifier
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static bool isIdentifier(Token t);
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/// Returns whether the token can be interpreted as an syntactical operator
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static bool isOperator(Token t, char op = 0);
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/// Returns whether the token can be interpreted as an enumerated value
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static bool isEnumeration(Token t);
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/// Returns whether the token can be interpreted as an datatype name
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static bool isDatatype(Token t);
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/// Returns the token interpreted as an integer
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static int asInt(Token t);
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/// Returns the token interpreted as an boolean (.T. or .F.)
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static bool asBool(Token t);
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/// Returns the token as a floating point number
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static double asFloat(Token t);
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/// Returns the token as a string (without the dot or apostrophe)
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static std::string asString(Token t);
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/// Returns a string representation of the token (including the dot or apostrophe)
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static std::string toString(Token t);
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};
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//
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// Functions for creating Tokens from an arbitary file offset
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// The first 4 bits are reserved for Tokens of type ()=,;$*
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//
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Token TokenPtr(unsigned int offset);
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Token TokenPtr(char c);
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Token TokenPtr();
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/// A stream of tokens to be read from a File.
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class Tokens {
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private:
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File* file;
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IfcCharacterDecoder* decoder;
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public:
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Tokens(File* f);
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Token Next();
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~Tokens();
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std::string TokenString(unsigned int offset);
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};
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/// Argument of type list, e.g.
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/// #1=IfcDirection((1.,0.,0.));
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/// ==========
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class ArgumentList: public Argument {
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private:
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std::vector<ArgumentPtr> list;
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void Push(ArgumentPtr l);
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public:
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ArgumentList(Tokens* t, std::vector<unsigned int>& ids);
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~ArgumentList();
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operator int() const;
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operator bool() const;
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operator double() const;
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operator std::string() const;
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operator std::vector<double>() const;
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operator std::vector<int>() const;
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operator std::vector<std::string>() const;
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operator IfcUtil::IfcSchemaEntity() const;
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//operator IfcUtil::IfcAbstractSelect::ptr() const;
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operator IfcEntities() const;
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unsigned int Size() const;
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ArgumentPtr operator [] (unsigned int i) const;
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std::string toString(bool upper=false) const;
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bool isNull() const;
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};
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/// Argument of type scalar or string, e.g.
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/// #1=IfcVector(#2,1.0);
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/// == ===
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class TokenArgument : public Argument {
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private:
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public:
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Token token;
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TokenArgument(Token t);
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operator int() const;
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operator bool() const;
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operator double() const;
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operator std::string() const;
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operator std::vector<double>() const;
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operator std::vector<int>() const;
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operator std::vector<std::string>() const;
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operator IfcUtil::IfcSchemaEntity() const;
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//operator IfcUtil::IfcAbstractSelect::ptr() const;
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operator IfcEntities() const;
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unsigned int Size() const;
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ArgumentPtr operator [] (unsigned int i) const;
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std::string toString(bool upper=false) const;
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bool isNull() const;
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};
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/// Argument of an IFC simple type
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/// #1=IfcTrimmedCurve(#2,(IFCPARAMETERVALUE(0.)),(IFCPARAMETERVALUE(1.)),.T.,.PARAMETER.);
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/// ===================== =====================
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class EntityArgument : public Argument {
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private:
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IfcUtil::IfcArgumentSelect* entity;
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public:
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EntityArgument(Ifc2x3::Type::Enum ty, Token t);
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~EntityArgument();
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operator int() const;
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operator bool() const;
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operator double() const;
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operator std::string() const;
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operator std::vector<double>() const;
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operator std::vector<int>() const;
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operator std::vector<std::string>() const;
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operator IfcUtil::IfcSchemaEntity() const;
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//operator IfcUtil::IfcAbstractSelect::ptr() const;
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operator IfcEntities() const;
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unsigned int Size() const;
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ArgumentPtr operator [] (unsigned int i) const;
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std::string toString(bool upper=false) const;
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bool isNull() const;
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};
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/// Entity defined in an IFC file, e.g.
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/// #1=IfcDirection((1.,0.,0.));
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/// ============================
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class Entity : public IfcAbstractEntity {
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private:
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ArgumentPtr args;
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Ifc2x3::Type::Enum _type;
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public:
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/// The EXPRESS ENTITY_NAME
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unsigned int _id;
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/// The offset at which the entity is read
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unsigned int offset;
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Entity(unsigned int i, Tokens* t);
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Entity(unsigned int i, Tokens* t, unsigned int o);
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~Entity();
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IfcEntities getInverse(Ifc2x3::Type::Enum c = Ifc2x3::Type::ALL);
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IfcEntities getInverse(Ifc2x3::Type::Enum c, int i, const std::string& a);
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void Load(std::vector<unsigned int>& ids, bool seek=false);
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ArgumentPtr getArgument (unsigned int i);
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unsigned int getArgumentCount();
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std::string toString(bool upper=false);
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std::string datatype();
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Ifc2x3::Type::Enum type() const;
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bool is(Ifc2x3::Type::Enum v) const;
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unsigned int id();
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};
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}
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typedef IfcUtil::IfcSchemaEntity IfcEntity;
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typedef IfcEntities IfcEntities;
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typedef std::map<Ifc2x3::Type::Enum,IfcEntities> MapEntitiesByType;
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typedef std::map<unsigned int,IfcEntity> MapEntityById;
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typedef std::map<std::string,Ifc2x3::IfcRoot::ptr> MapEntityByGuid;
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typedef std::map<unsigned int,IfcEntities> MapEntitiesByRef;
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typedef std::map<unsigned int,unsigned int> MapOffsetById;
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/// This class provides several static convenience functions and variables
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/// and provide access to the entities in an IFC file
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class Ifc {
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private:
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static MapEntityById byid;
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static MapEntitiesByType bytype;
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static MapEntitiesByRef byref;
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static MapEntityByGuid byguid;
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static MapOffsetById offsets;
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static unsigned int lastId;
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static std::ostream* log1;
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static std::ostream* log2;
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static std::stringstream log_stream;
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public:
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/// Returns the first entity in the file, this probably is the entity with the lowest id (EXPRESS ENTITY_NAME)
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static MapEntityById::const_iterator First();
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/// Returns the last entity in the file, this probably is the entity with the highes id (EXPRESS ENTITY_NAME)
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static MapEntityById::const_iterator Last();
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/// Determines to what stream respectively progress and errors are logged
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static void SetOutput(std::ostream* l1, std::ostream* l2);
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/// Log a message to the output stream
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static void LogMessage(const std::string& type, const std::string& message, const IfcAbstractEntityPtr entity=0);
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static IfcParse::File* file;
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static IfcParse::Tokens* tokens;
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/// Returns all entities in the file that match the template argument.
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/// NOTE: This also returns subtypes of the requested type, for example:
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/// IfcWall will also return IfcWallStandardCase entities
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template <class T>
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static typename T::list EntitiesByType() {
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IfcEntities e = EntitiesByType(T::Class());
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typename T::list l ( new IfcTemplatedEntityList<T>() );
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if ( e && e->Size() )
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for ( IfcEntityList::it it = e->begin(); it != e->end(); ++ it ) {
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l->push(reinterpret_pointer_cast<IfcUtil::IfcBaseClass,T>(*it));
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}
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return l;
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}
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/// Returns all entities in the file that match the positional argument.
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/// NOTE: This also returns subtypes of the requested type, for example:
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/// IfcWall will also return IfcWallStandardCase entities
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static IfcEntities EntitiesByType(Ifc2x3::Type::Enum t);
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/// Returns all entities in the file that reference the id
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static IfcEntities EntitiesByReference(int id);
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/// Returns the entity with the specified id
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static IfcEntity EntityById(int id);
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/// Returns the entity with the specified GlobalId
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static Ifc2x3::IfcRoot::ptr EntityByGuid(const std::string& guid);
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static bool Init(const std::string& fn);
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static bool Init(std::istream& fn, int len);
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static bool Init(void* data, int len);
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static bool Init(IfcParse::File* f);
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static std::string GetLog();
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static void Dispose();
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static bool hasPlaneAngleUnit;
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static bool SewShells;
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static double LengthUnit;
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static double PlaneAngleUnit;
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static int CircleSegments;
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static int Verbosity;
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};
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double UnitPrefixToValue( Ifc2x3::IfcSIPrefix::IfcSIPrefix v );
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#endif
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