mirror of
https://github.com/IfcOpenShell/IfcOpenShell.git
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aothms
365 lines
12 KiB
C++
365 lines
12 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 <boost/dynamic_bitset.hpp>
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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/IfcSpfStream.h"
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namespace IfcParse {
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class Entity;
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class IfcFile;
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class IfcSpfLexer;
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typedef std::pair<IfcSpfLexer*, 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 a 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 a datatype name
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static bool isKeyword(const Token& t);
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/// Returns whether the token can be interpreted as an integer
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static bool isInt(const Token& t);
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/// Returns whether the token can be interpreted as a boolean
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static bool isBool(const Token& t);
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/// Returns whether the token can be interpreted as a floating point number
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static bool isFloat(const Token& t);
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/// Returns whether the token can be interpreted as a binary type
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static bool isBinary(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 the token as a string (without the dot or apostrophe)
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static boost::dynamic_bitset<> asBinary(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(IfcSpfLexer* 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 IfcSpfLexer {
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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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IfcSpfLexer(IfcSpfStream* s, IfcFile* f);
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Token Next();
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~IfcSpfLexer();
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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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virtual ~ArgumentList();
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void read(IfcSpfLexer* t, std::vector<unsigned int>& ids);
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IfcUtil::ArgumentType type() const;
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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 boost::dynamic_bitset<>() const;
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operator IfcUtil::IfcBaseClass*() const;
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operator std::vector<int>() const;
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operator std::vector<double>() const;
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operator std::vector<std::string>() const;
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operator std::vector<boost::dynamic_bitset<> >() const;
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operator IfcEntityList::ptr() const;
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operator std::vector< std::vector<int> >() const;
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operator std::vector< std::vector<double> >() const;
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operator IfcEntityListList::ptr() const;
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bool isNull() const;
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unsigned int size() const;
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Argument* operator [] (unsigned int i) const;
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void set(unsigned int i, Argument*);
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std::string toString(bool upper=false) 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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IfcUtil::ArgumentType type() const;
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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 boost::dynamic_bitset<>() const;
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operator IfcUtil::IfcBaseClass*() const;
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operator std::vector<int>() const;
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operator std::vector<double>() const;
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operator std::vector<std::string>() const;
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operator std::vector<boost::dynamic_bitset<> >() const;
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operator IfcEntityList::ptr() const;
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operator std::vector< std::vector<int> >() const;
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operator std::vector< std::vector<double> >() const;
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operator IfcEntityListList::ptr() const;
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bool isNull() 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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};
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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::IfcBaseClass* entity;
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public:
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EntityArgument(const Token& t);
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virtual ~EntityArgument();
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IfcUtil::ArgumentType type() const;
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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 boost::dynamic_bitset<>() const;
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operator IfcUtil::IfcBaseClass*() const;
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operator std::vector<int>() const;
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operator std::vector<double>() const;
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operator std::vector<std::string>() const;
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operator std::vector<boost::dynamic_bitset<> >() const;
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operator IfcEntityList::ptr() const;
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operator std::vector< std::vector<int> >() const;
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operator std::vector< std::vector<double> >() const;
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operator IfcEntityListList::ptr() const;
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bool isNull() 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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};
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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 ArgumentList* 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 type, int attribute_index);
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void Load(std::vector<unsigned int>& ids, bool seek=false) const;
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void Unload();
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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() const;
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const IfcWrite::IfcWritableEntity* isWritable() const;
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IfcWrite::IfcWritableEntity* isWritable();
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};
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template <typename Fn1, typename Fn2>
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class InstanceStreamer {
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private:
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IfcFile* file_;
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IfcSpfStream& stream_;
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IfcSpfLexer& lexer_;
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Fn1& fn1_;
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Fn2& fn2_;
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unsigned int current_inst_name_,
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last_inst_name_,
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num_insts_encountered_,
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max_inst_name_encountered_;
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public:
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InstanceStreamer(IfcFile* file, IfcSpfStream& stream, IfcSpfLexer& lexer, Fn1& fn1, Fn2& fn2)
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: file_(file)
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, stream_(stream)
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, lexer_(lexer)
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, fn1_(fn1)
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, fn2_(fn2)
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, current_inst_name_(0)
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, last_inst_name_(0)
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, num_insts_encountered_(0)
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, max_inst_name_encountered_(0)
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{}
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unsigned int current_inst_name() { return current_inst_name_; }
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unsigned int last_inst_name() { return last_inst_name_; }
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unsigned int num_insts_encountered() { return num_insts_encountered_; }
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unsigned int max_inst_name_encountered() { return max_inst_name_encountered_; }
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void stream() {
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Logger::Status("Scanning file...");
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Token token = TokenPtr();
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Token previous = TokenPtr();
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Entity* inst_data;
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IfcUtil::IfcBaseClass* entity_instance = 0;
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while (!stream_.eof) {
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if (current_inst_name_ != 0) {
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try {
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inst_data = new Entity(current_inst_name_, file_);
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if (file_->create_latebound_entities()) {
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entity_instance = new IfcLateBoundEntity(inst_data);
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} else {
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entity_instance = IfcSchema::SchemaEntity(inst_data);
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}
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} catch (const IfcException& ex) {
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current_inst_name_ = 0;
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Logger::Message(Logger::LOG_ERROR, ex.what());
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continue;
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}
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// Update the status after every 1000 instances parsed
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if (((++num_insts_encountered_) % 1000) == 0) {
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std::stringstream ss; ss << "\r#" << current_inst_name_;
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Logger::Status(ss.str(), false);
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}
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fn1_(entity_instance);
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max_inst_name_encountered_ = (std::max)(max_inst_name_encountered_, current_inst_name_);
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current_inst_name_ = 0;
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} else {
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try {
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token = lexer_.Next();
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} catch (...) {
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token = TokenPtr();
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}
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}
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if (!(token.second || token.first)) {
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break;
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}
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if ((previous.second || previous.first) && TokenFunc::isIdentifier(previous)) {
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int id = TokenFunc::asInt(previous);
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if (TokenFunc::isOperator(token, '=')) {
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current_inst_name_ = id;
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} else if (entity_instance) {
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fn2_(entity_instance, id);
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}
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}
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previous = token;
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}
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Logger::Status("\rDone scanning file ");
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}
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};
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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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