dcop Library API Documentation

stub.cpp

00001 /*****************************************************************
00002 Copyright (c) 1999 Torben Weis <weis@kde.org>
00003 Copyright (c) 2000 Matthias Ettrich <ettrich@kde.org>
00004 
00005 Permission is hereby granted, free of charge, to any person obtaining a copy
00006 of this software and associated documentation files (the "Software"), to deal
00007 in the Software without restriction, including without limitation the rights
00008 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
00009 copies of the Software, and to permit persons to whom the Software is
00010 furnished to do so, subject to the following conditions:
00011 
00012 The above copyright notice and this permission notice shall be included in
00013 all copies or substantial portions of the Software.
00014 
00015 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
00016 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
00017 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
00018 X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
00019 AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
00020 CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
00021 
00022 ******************************************************************/
00023 #include <qdom.h>
00024 #include <qfile.h>
00025 #include <qtextstream.h>
00026 #include <qstring.h>
00027 #include <qstringlist.h>
00028 
00029 #include <string.h>
00030 #include <stdlib.h>
00031 #include <stdio.h>
00032 #include <unistd.h>
00033 #include "main.h"
00034 
00035 
00039 void generateStub( const QString& idl, const QString& filename, QDomElement de)
00040 {
00041     QFile stub( filename );
00042     if ( !stub.open( IO_WriteOnly ) )
00043     qFatal("Could not write to %s", filename.local8Bit().data() );
00044     
00045     QTextStream str( &stub );
00046 
00047     str << "/****************************************************************************" << endl;
00048     str << "**" << endl;
00049     str << "** DCOP Stub Definition created by dcopidl2cpp from " << idl << endl;
00050     str << "**" << endl;
00051     str << "** WARNING! All changes made in this file will be lost!" << endl;
00052     str << "**" << endl;
00053     str << "*****************************************************************************/" << endl;
00054     str << endl;
00055 
00056     QString ifdefstring = idl.upper();
00057     int pos = idl.findRev( '.' );
00058     if ( pos != -1 )
00059     ifdefstring = ifdefstring.left( pos );
00060 
00061     QString ifdefsuffix = "_STUB__";
00062     str << "#ifndef __" << ifdefstring << ifdefsuffix << endl;
00063     str << "#define __" << ifdefstring << ifdefsuffix << endl << endl;
00064 
00065     str << "#include <dcopstub.h>" << endl;
00066 
00067     QStringList includeslist, all_includes;
00068     QDomElement e = de.firstChild().toElement();
00069     for( ; !e.isNull(); e = e.nextSibling().toElement() ) {
00070     if ( e.tagName() == "INCLUDE" ) {
00071             // dcopidl lists the includes in reversed order because of the used yacc/bison gramatic
00072             // so let's reverse it back, as the order may be important
00073         includeslist.prepend( e.firstChild().toText().data());
00074             continue;
00075     }
00076         if( !includeslist.empty()) {
00077             for( QStringList::ConstIterator it = includeslist.begin();
00078                  it != includeslist.end();
00079                  ++it ) {
00080                 str << "#include <" << ( *it ) << ">" << endl;
00081                 all_includes.append( *it );
00082             }
00083             includeslist.clear();
00084         }
00085         if ( e.tagName() == "CLASS" ) {
00086         str << endl;
00087     
00088         QDomElement n = e.firstChild().toElement();
00089         Q_ASSERT( n.tagName() == "NAME" );
00090         QString className = n.firstChild().toText().data() 
00091                          + ( "_stub" );
00092     
00093         // find dcop parent ( rightmost super class )
00094         QString DCOPParent;
00095         QDomElement s = n.nextSibling().toElement();
00096         for( ; !s.isNull(); s = s.nextSibling().toElement() ) {
00097         if ( s.tagName() == "SUPER" )
00098             DCOPParent = s.firstChild().toText().data();
00099         }
00100             
00101             if( DCOPParent != "DCOPObject" ) { // we need to include the .h file for the base stub
00102                 if( all_includes.contains( DCOPParent + ".h" ))
00103                     str << "#include <" << DCOPParent << "_stub.h>" << endl;
00104                 else if( all_includes.contains( DCOPParent.lower() + ".h" ))
00105                     str << "#include <" << DCOPParent.lower() << "_stub.h>" << endl;
00106                 else {// damn ... let's assume it's the last include
00107                     QString stub_h = all_includes.last();
00108                     unsigned int pos = stub_h.find( ".h" );
00109                     if( pos > 0 ) {
00110                         stub_h = stub_h.remove( pos, 100000 );
00111                         str << "#include <" << stub_h << "_stub.h>" << endl;
00112                     }
00113                     else
00114                         str << "#include <" << stub_h << ">" << endl;
00115                 }
00116             }
00117 
00118             QString classNameFull = className; // class name with possible namespaces prepended
00119                                                // namespaces will be removed from className now
00120             int namespace_count = 0;
00121             QString namespace_tmp = className;
00122             for(;;) {
00123                 int pos = namespace_tmp.find( "::" );
00124                 if( pos < 0 )
00125                     {
00126                     className = namespace_tmp;
00127                     break;
00128                     }
00129                 str << "namespace " << namespace_tmp.left( pos ) << " {" << endl;
00130                 ++namespace_count;
00131                 namespace_tmp = namespace_tmp.mid( pos + 2 );
00132             }
00133 
00134             str << endl;
00135 
00136         // Stub class definition
00137         str << "class " << className;
00138 
00139         // Parent : inherited interface stub or dcopstub
00140             if ( !DCOPParent.isEmpty() && DCOPParent != "DCOPObject" ) {
00141                str << " : ";
00142                str << "virtual public " << DCOPParent << "_stub";
00143             } else {
00144                str << " : virtual public DCOPStub";
00145             }
00146 
00147         str << endl;
00148         str << "{" << endl;
00149         str << "public:" << endl;
00150     
00151             // Constructors
00152             str << "    " << className << "( const QCString& app, const QCString& id );" << endl;
00153             str << "    " << className << "( DCOPClient* client, const QCString& app, const QCString& id );" << endl;
00154 
00155         s = e.firstChild().toElement();
00156         for( ; !s.isNull(); s = s.nextSibling().toElement() ) {
00157         if (s.tagName() == "FUNC") {
00158             QDomElement r = s.firstChild().toElement();
00159             Q_ASSERT( r.tagName() == "TYPE" );
00160             str << "    virtual "; // KDE4 - I really don't think these need to be virtual
00161             if ( r.hasAttribute( "qleft" ) )
00162             str << r.attribute("qleft") << " ";
00163             str << r.firstChild().toText().data();
00164             if ( r.hasAttribute( "qright" ) )
00165             str << r.attribute("qright") << " ";
00166             else
00167             str << " ";
00168 
00169             r = r.nextSibling().toElement();
00170             Q_ASSERT ( r.tagName() == "NAME" );
00171             str << r.firstChild().toText().data() << "(";
00172 
00173             bool first = TRUE;
00174             r = r.nextSibling().toElement();
00175             for( ; !r.isNull(); r = r.nextSibling().toElement() ) {
00176             if ( !first )
00177                 str << ", ";
00178             else
00179                 str << " ";
00180             first = FALSE;
00181             Q_ASSERT( r.tagName() == "ARG" );
00182             QDomElement a = r.firstChild().toElement();
00183             Q_ASSERT( a.tagName() == "TYPE" );
00184             if ( a.hasAttribute( "qleft" ) )
00185                 str << a.attribute("qleft") << " ";
00186             str << a.firstChild().toText().data();
00187             if ( a.hasAttribute( "qright" ) )
00188                 str << a.attribute("qright") << " ";
00189             else
00190                 str << " ";
00191             a = a.nextSibling().toElement();
00192             if ( a.tagName() == "NAME" )
00193                 str << a.firstChild().toText().data();
00194             }
00195             if ( !first )
00196             str << " ";
00197             str << ")";
00198 
00199             if ( s.hasAttribute("qual") )
00200             str << " " << s.attribute("qual");
00201             str << ";" << endl;
00202         }
00203         }
00204 
00205             // needed for inherited stubs
00206         str << "protected:" << endl;
00207             str << "    " << className << "() : DCOPStub( never_use ) {};" << endl;
00208 
00209         str << "};" << endl;
00210         str << endl;
00211 
00212             for(;
00213                  namespace_count > 0;
00214                  --namespace_count )
00215                 str << "} // namespace" << endl;
00216             str << endl;
00217 
00218     }
00219     }
00220 
00221     str << "#endif" << endl;
00222     stub.close();
00223 }
00224 
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