2008-10-26 11:54:20 +01:00
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/*
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* c++check - c/c++ syntax checking
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* Copyright (C) 2007 Daniel Marjamäki
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program 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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* GNU General Public License for more details.
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*
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* You should have received a copy of the 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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2008-10-26 13:19:19 +01:00
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#include "preprocessor.h"
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2008-10-26 15:11:21 +01:00
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#include <list>
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2008-10-26 13:19:19 +01:00
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#include <sstream>
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2008-10-26 15:11:21 +01:00
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static std::string getcode(const std::string &filedata, std::string cfg);
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2008-10-26 13:19:19 +01:00
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void preprocess(std::istream &istr, std::map<std::string, std::string> &result)
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{
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std::ostringstream ostr;
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std::string line;
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while ( getline(istr, line) )
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ostr << line << "\n";
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2008-10-26 15:11:21 +01:00
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result.clear();
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result[""] = getcode( ostr.str(), "" );
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result["WIN32"] = getcode( ostr.str(), "WIN32" );
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2008-10-26 13:19:19 +01:00
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}
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2008-10-26 11:54:20 +01:00
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2008-10-26 15:11:21 +01:00
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static std::string getcode(const std::string &filedata, std::string cfg)
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{
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std::ostringstream ret;
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std::list<bool> matching_ifdef;
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std::istringstream istr(filedata);
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std::string line;
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while ( getline(istr, line) )
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{
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if ( line.find("#ifdef ") == 0 )
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matching_ifdef.push_back( !cfg.empty() && line.find(cfg) != std::string::npos );
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else if ( line.find("#else") == 0)
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matching_ifdef.back() = ! matching_ifdef.back();
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else if ( line.find("#endif") == 0 )
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matching_ifdef.pop_back();
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if ( !matching_ifdef.empty() && !matching_ifdef.back() )
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line = "";
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if ( line.find("#") == 0 )
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line = "";
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ret << line << "\n";
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}
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return ret.str();
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}
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