Exheredludis/paludis/comma_separated_dep_parser.cc
2010-08-13 11:24:45 +01:00

58 lines
2.1 KiB
C++

/* vim: set sw=4 sts=4 et foldmethod=syntax : */
/*
* Copyright (c) 2007, 2008, 2009, 2010 Ciaran McCreesh
*
* This file is part of the Paludis package manager. Paludis is free software;
* you can redistribute it and/or modify it under the terms of the GNU General
* Public License version 2, as published by the Free Software Foundation.
*
* Paludis 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 GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
* Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <paludis/comma_separated_dep_parser.hh>
#include <paludis/util/tokeniser.hh>
#include <paludis/util/strip.hh>
#include <paludis/util/exception.hh>
#include <paludis/util/options.hh>
#include <paludis/dep_spec.hh>
#include <paludis/user_dep_spec.hh>
#include <paludis/spec_tree.hh>
#include <list>
using namespace paludis;
std::shared_ptr<const DependencySpecTree>
CommaSeparatedDepParser::parse(const Environment * const env, const std::string & s)
{
Context context("When parsing '" + s + "':");
std::shared_ptr<DependencySpecTree> result(std::make_shared<DependencySpecTree>(std::make_shared<AllDepSpec>()));
std::list<std::string> tokens;
tokenise<delim_kind::AnyOfTag, delim_mode::DelimiterTag>(s, ",", "", std::back_inserter(tokens));
for (std::list<std::string>::const_iterator t(tokens.begin()), t_end(tokens.end()) ;
t != t_end ; ++t)
{
std::string a(strip_leading(strip_trailing(*t, " \t\r\n"), " \t\r\n"));
Context local_context("When parsing token '" + a + "':");
if (a.empty())
continue;
std::shared_ptr<PackageDepSpec> spec(std::make_shared<PackageDepSpec>(parse_user_package_dep_spec(a, env, { updso_no_disambiguation })));
result->top()->append(spec);
}
return result;
}