72 lines
2.6 KiB
C++
72 lines
2.6 KiB
C++
/*
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open source routing machine
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Copyright (C) Dennis Luxen, others 2010
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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 AFFERO 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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any later version.
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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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You should have received a copy of the GNU Affero General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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or see http://www.gnu.org/licenses/agpl.txt.
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Custom validators for use with boost::program_options.
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*/
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#ifndef PROGAM_OPTIONS_H
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#define PROGAM_OPTIONS_H
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#include "OSRMException.h"
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#include <boost/any.hpp>
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#include <boost/filesystem.hpp>
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#include <boost/program_options.hpp>
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#include <boost/regex.hpp>
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#include <string>
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#include <vector>
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namespace boost {
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namespace filesystem {
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// Validator for boost::filesystem::path, that verifies that the file
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// exists. The validate() function must be defined in the same namespace
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// as the target type, (boost::filesystem::path in this case), otherwise
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// it is not be called
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void validate(
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boost::any & v,
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const std::vector<std::string> & values,
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boost::filesystem::path *,
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int
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) {
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boost::program_options::validators::check_first_occurrence(v);
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const std::string & input_string =
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boost::program_options::validators::get_single_string(values);
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if(boost::filesystem::is_regular_file(input_string)) {
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v = boost::any(boost::filesystem::path(input_string));
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} else {
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throw OSRMException(input_string);
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}
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}
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}
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}
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//support old capitalized option names by downcasing them with a regex replace
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//read from file and store in a stringstream that can be passed to boost::program_options
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inline void PrepareConfigFile(const boost::filesystem::path& path, std::string& output ) {
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std::ifstream config_stream(path.c_str());
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std::string input_str( (std::istreambuf_iterator<char>(config_stream)), std::istreambuf_iterator<char>() );
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boost::regex regex( "^([^=]*)" ); //match from start of line to '='
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std::string format( "\\L$1\\E" ); //replace with downcased substring
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output = boost::regex_replace( input_str, regex, format );
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}
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#endif /* PROGRAM_OPTIONS_H */
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