mirror of
https://github.com/IfcOpenShell/IfcOpenShell.git
synced 2026-08-10 17:58:20 +00:00
Thomas Krijnen
306 lines
11 KiB
C++
306 lines
11 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 IfcSchema::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 "0.5.0-dev"
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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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#ifdef USE_IFC4
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#include "../ifcparse/Ifc4.h"
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#else
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#include "../ifcparse/Ifc2x3.h"
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#endif
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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 IfcFile;
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class Tokens;
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typedef std::pair<Tokens*,unsigned> 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(const 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(const Token& t);
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/// Returns whether the token can be interpreted as a string
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static bool isString(const Token& t);
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/// Returns whether the token can be interpreted as an identifier
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static bool isIdentifier(const Token& t);
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/// Returns whether the token can be interpreted as an syntactical operator
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static bool isOperator(const 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(const Token& t);
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/// Returns whether the token can be interpreted as an datatype name
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static bool isDatatype(const Token& t);
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/// Returns the token interpreted as an integer
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static int asInt(const Token& t);
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/// Returns the token interpreted as an boolean (.T. or .F.)
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static bool asBool(const Token& t);
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/// Returns the token as a floating point number
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static double asFloat(const 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(const 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(const 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(Tokens* tokens, 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 IfcSpfStream.
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class Tokens {
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private:
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IfcCharacterDecoder* decoder;
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unsigned int skipWhitespace();
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unsigned int skipComment();
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public:
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IfcSpfStream* stream;
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IfcFile* file;
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Tokens(IfcSpfStream* s, IfcFile* 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<Argument*> list;
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void Push(Argument* 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::IfcBaseClass*() const;
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//operator IfcUtil::IfcAbstractSelect::ptr() const;
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operator IfcEntityList::ptr() const;
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operator IfcEntityListList::ptr() const;
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unsigned int Size() const;
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Argument* 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(const 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::IfcBaseClass*() const;
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//operator IfcUtil::IfcAbstractSelect::ptr() const;
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operator IfcEntityList::ptr() const;
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operator IfcEntityListList::ptr() const;
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unsigned int Size() const;
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Argument* 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(IfcSchema::Type::Enum ty, const 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::IfcBaseClass*() const;
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//operator IfcUtil::IfcAbstractSelect::ptr() const;
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operator IfcEntityList::ptr() const;
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operator IfcEntityListList::ptr() const;
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unsigned int Size() const;
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Argument* 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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mutable Argument* args;
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mutable IfcSchema::Type::Enum _type;
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public:
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/// The EXPRESS ENTITY_INSTANCE_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, IfcFile* t);
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Entity(unsigned int i, IfcFile* t, unsigned int o);
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~Entity();
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IfcEntityList::ptr getInverse(IfcSchema::Type::Enum c = IfcSchema::Type::ALL);
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IfcEntityList::ptr getInverse(IfcSchema::Type::Enum c, int i, const std::string& a);
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void Load(std::vector<unsigned int>& ids, bool seek=false) const;
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Argument* getArgument (unsigned int i);
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unsigned int getArgumentCount() const;
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std::string toString(bool upper=false) const;
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std::string datatype() const;
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IfcSchema::Type::Enum type() const;
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bool is(IfcSchema::Type::Enum v) const;
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unsigned int id();
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bool isWritable();
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};
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typedef std::map<IfcSchema::Type::Enum, IfcEntityList::ptr> MapEntitiesByType;
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typedef std::map<unsigned int, IfcUtil::IfcBaseClass*> MapEntityById;
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typedef std::map<std::string, IfcSchema::IfcRoot*> MapEntityByGuid;
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typedef std::map<unsigned int, IfcEntityList::ptr> 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 IfcFile {
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private:
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MapEntityById byid;
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MapEntitiesByType bytype;
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MapEntitiesByRef byref;
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MapEntityByGuid byguid;
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MapOffsetById offsets;
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unsigned int lastId;
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unsigned int MaxId;
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std::string _filename;
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std::string _timestamp;
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std::string _author;
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std::string _author_email;
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std::string _author_organisation;
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void initTimestamp();
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public:
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typedef MapEntityById::const_iterator const_iterator;
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IfcFile();
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~IfcFile();
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/// Returns the first entity in the file, this probably is the entity with the lowest id (EXPRESS ENTITY_INSTANCE_NAME)
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const_iterator begin() const;
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/// Returns the last entity in the file, this probably is the entity with the highes id (EXPRESS ENTITY_INSTANCE_NAME)
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const_iterator end() const;
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IfcParse::IfcSpfStream* file;
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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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typename T::list::ptr EntitiesByType() {
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IfcEntityList::ptr e = EntitiesByType(T::Class());
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typename T::list::ptr l(new typename T::list);
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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((T*)*it);
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}
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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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IfcEntityList::ptr EntitiesByType(IfcSchema::Type::Enum t);
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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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IfcEntityList::ptr EntitiesByType(const std::string& t);
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/// Returns all entities in the file that reference the id
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IfcEntityList::ptr EntitiesByReference(int id);
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/// Returns the entity with the specified id
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IfcUtil::IfcBaseClass* EntityById(int id);
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/// Returns the entity with the specified GlobalId
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IfcSchema::IfcRoot* EntityByGuid(const std::string& guid);
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bool Init(const std::string& fn);
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bool Init(std::istream& fn, int len);
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bool Init(void* data, int len);
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bool Init(IfcParse::IfcSpfStream* f);
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unsigned int FreshId() { MaxId ++; return MaxId; }
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void AddEntity(IfcUtil::IfcBaseClass* entity);
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void AddEntities(IfcEntityList::ptr es);
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void filename(const std::string& s);
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std::string filename() const;
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void timestamp(const std::string& s);
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std::string timestamp() const;
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void author(const std::string& name, const std::string& email, const std::string& organisation);
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std::string authorName() const;
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std::string authorEmail() const;
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std::string authorOrganisation() const;
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};
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double UnitPrefixToValue( IfcSchema::IfcSIPrefix::IfcSIPrefix v );
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}
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std::ostream& operator<< (std::ostream& os, const IfcParse::IfcFile& f);
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#endif
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