IfcParse: allow reading of IFC file from stdin

IfcServer: first commit of a stdin/stdout interface to IfcGeomObjects [undocumented for now]
BIMserver_plugin: first commit of IfcEngine plugin implementation for use with http://BIMserver.org [undocumented for now]

src/ifcserver/IfcServer.cpp

@@ -0,0 +1,103 @@
+/********************************************************************************
+ *                                                                              *
+ * This file is part of IfcOpenShell.                                           *
+ *                                                                              *
+ * IfcOpenShell is free software: you can redistribute it and/or modify         *
+ * it under the terms of the Lesser GNU General Public License as published by  *
+ * the Free Software Foundation, either version 3.0 of the License, or          *
+ * (at your option) any later version.                                          *
+ *                                                                              *
+ * IfcOpenShell 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                 *
+ * Lesser GNU General Public License for more details.                          *
+ *                                                                              *
+ * You should have received a copy of the Lesser GNU General Public License     *
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.         *
+ *                                                                              *
+ ********************************************************************************/
+
+/********************************************************************************
+ *                                                                              *
+ * This examples exposes the IfcOpenShell API through a command-based stdin     *
+ * interface                                                                    *
+ *                                                                              *
+ ********************************************************************************/
+
+#include <iostream>
+
+#include "../ifcparse/IfcGeomObjects.h"
+
+#if defined(WIN32) && !defined(__CYGWIN__)
+#include <io.h>
+#include <fcntl.h>
+#endif
+
+int main ( int argc, char** argv ) {
+#if defined(WIN32) && !defined(__CYGWIN__)
+	_setmode(_fileno(stdout), _O_BINARY);
+	std::cout.setf(std::ios_base::binary);
+#endif
+	bool has_more = false;
+	std::cout.write("IfcOpenShell-0.2.0",18);
+	std::cout.flush();
+	const IfcGeomObjects::IfcGeomObject* ifc_geom = 0;
+	while (1) {
+		std::string command;
+		std::cin >> command;
+		if ( command == "load" ) {
+			std::string fn;
+			std::getline(std::cin,fn);
+			fn = fn.erase(0,fn.find_first_not_of(" "));
+			has_more = IfcGeomObjects::Init(fn.c_str(),true,0,&std::cerr);
+			std::cout.write(has_more ? "y" : "n",1);
+			std::cout.flush();
+		} else if ( command == "loadstdin" ) {
+			std::cout << "ok" << std::flush;
+			int len;
+			std::cin >> len;
+			std::cout << "ok" << std::flush;
+			has_more = IfcGeomObjects::Init(std::cin,len,true,0,&std::cerr);
+			std::cout.write(has_more ? "y" : "n",1);
+			std::cout.flush();
+		} else if ( command == "get" ) {
+			if ( !has_more ) {
+				std::cout << "Not loaded" << std::flush;
+			} else {
+				ifc_geom = IfcGeomObjects::Get();
+				const int vcount = ifc_geom->mesh->verts.size() / 3;
+				std::cout.write((char*)&vcount,sizeof(int));
+				std::cout.write((char*)&ifc_geom->mesh->verts[0],sizeof(float)*vcount*3);
+				const int fcount = ifc_geom->mesh->faces.size() / 3;
+				std::cout.write((char*)&fcount,sizeof(int));
+				std::cout.write((char*)&ifc_geom->mesh->faces[0],sizeof(int)*fcount*3);
+				std::cout.flush();
+			}
+		} else if ( command == "type" ) {
+			if ( ! ifc_geom ) {
+				std::cout << "Not loaded" << std::flush;
+			} else {
+				std::cout << ifc_geom->type << std::flush;			
+			}
+		} else if ( command == "guid" ) {
+			if ( ! ifc_geom ) {
+				std::cout << "Not loaded" << std::flush;
+			} else {
+				std::cout << ifc_geom->name << std::flush;			
+			}
+		} else if ( command == "next" ) {
+			if ( !has_more ) {
+				std::cout << "Not loaded" << std::flush;
+			} else {
+				has_more = IfcGeomObjects::Next();
+				std::cout.write(has_more ? "y" : "n",1);
+				std::cout.flush();
+			}
+		} else if ( command == "quit" || command == "exit" ) {
+			std::cout << "Bye" << std::flush;
+			break;
+		} else {
+			std::cout << "Unknown command " << command << std::flush;
+		}
+	}
+}