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/*
Please use git log for copyright holder and year information
This file is part of libbash.
libbash is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
libbash 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 libbash. If not, see <http://www.gnu.org/licenses/>.
*/
///
/// \file inherit_builtin.cpp
/// \brief class that implements the inherit builtin
///
#include "builtins/inherit_builtin.h"
#include <cstdlib>
#include <string>
#include "core/interpreter.h"
inline void inherit_builtin::append_global(const std::string& name)
{
if(!_walker.is_unset_or_null(name, 0))
_walker.set_value("E_" + name, _walker.resolve<std::string>("E_" + name) + " " + _walker.resolve<std::string>(name));
}
inline void inherit_builtin::restore_global(const std::string& name, const std::string& value)
{
if(value != "")
_walker.set_value(name, value);
else
_walker.unset(name);
}
inline void inherit_builtin::backup_global(const std::string& name, std::string& value)
{
value = _walker.resolve<std::string>(name);
_walker.unset(name);
}
inline bool inherit_builtin::hasq(const std::string& value, const std::string& name)
{
const std::string& target = _walker.resolve<std::string>(name);
return target.find(value) != std::string::npos;
}
// We do not support any QA warning
int inherit_builtin::exec(const std::vector<std::string>& bash_args)
{
_walker.set_value("ECLASS_DEPTH", _walker.resolve<long>("ECLASS_DEPTH") + 1);
// find eclass directory
std::string eclassdir;
if(getenv("ECLASSDIR"))
eclassdir = getenv("ECLASSDIR") + std::string("/");
else
eclassdir = "/usr/portage/eclass/";
std::string location;
std::string export_funcs_var;
// These variables must be restored before returning
std::string PECLASS(_walker.resolve<std::string>("ECLASS"));
std::string prev_export_funcs_var(_walker.resolve<std::string>("__export_funcs_var"));
std::string B_IUSE;
std::string B_REQUIRED_USE;
std::string B_DEPEND;
std::string B_RDEPEND;
std::string B_PDEPEND;
for(auto iter = bash_args.begin(); iter != bash_args.end(); ++iter)
{
location = eclassdir + *iter + ".eclass";
_walker.set_value("ECLASS", *iter);
export_funcs_var = "__export_functions_" + _walker.resolve<std::string>("ECLASS_DEPTH");
_walker.unset(export_funcs_var);
// Portage implementation performs actions for overlays here but we don't do it for now
backup_global("IUSE", B_IUSE);
backup_global("REQUIRED_USE", B_REQUIRED_USE);
backup_global("DEPEND", B_DEPEND);
backup_global("RDEPEND", B_RDEPEND);
backup_global("PDEPEND", B_PDEPEND);
_walker.execute_builtin("source", {location});
append_global("IUSE");
append_global("REQUIRED_USE");
append_global("DEPEND");
append_global("RDEPEND");
append_global("PDEPEND");
restore_global("IUSE", B_IUSE);
restore_global("REQUIRED_USE", B_REQUIRED_USE);
restore_global("DEPEND", B_DEPEND);
restore_global("RDEPEND", B_RDEPEND);
restore_global("PDEPEND", B_PDEPEND);
// Portage implementation exports functions here but we don't do it for now
if(!hasq(*iter, "INHERITED"))
_walker.set_value("INHERITED", _walker.resolve<std::string>("INHERITED") + " " + *iter);
}
_walker.set_value("ECLASS_DEPTH", _walker.resolve<long>("ECLASS_DEPTH") - 1);
if(_walker.resolve<long>("ECLASS_DEPTH") > 0)
{
_walker.set_value("ECLASS", PECLASS);
}
else
{
_walker.unset("ECLASS");
_walker.unset("__export_funcs_var");
}
return 0;
}
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