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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 printf_builtin.h
/// \brief implementation for the printf builtin
///
#include "builtins/printf_builtin.h"
#include <boost/format.hpp>
#include "core/interpreter.h"
#include "cppbash_builtin.h"
int printf_builtin::exec(const std::vector<std::string>& bash_args)
{
std::vector<std::string>::const_iterator begin;
if(!(bash_args[0] == "-v"))
begin = bash_args.begin();
else if(bash_args.size() < 3)
throw libbash::illegal_argument_exception("printf: illegal number of arguments");
else
begin = bash_args.begin() + 2;
std::stringstream format_string;
cppbash_builtin::transform_escapes(*begin, format_string, false);
boost::format formatter(format_string.str());
for(auto iter = begin + 1; iter != bash_args.end(); ++iter)
formatter = formatter % *iter;
if(!(bash_args[0][0] == '-'))
{
*_out_stream << formatter;
}
else if(bash_args[0] == "-v")
{
std::stringstream output;
output << formatter;
_walker.set_value(bash_args[1], output.str());
}
else
{
throw libbash::illegal_argument_exception("printf: invalid option: " + bash_args[0]);
}
return 0;
}
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