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// Copyright (c) 2016 Klemens D. Morgenstern
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
#ifndef BOOST_PROCESS_DETAIL_POSIX_BASIC_CMD_HPP_
#define BOOST_PROCESS_DETAIL_POSIX_BASIC_CMD_HPP_
#include <boost/process/detail/posix/handler.hpp>
#include <boost/process/detail/posix/cmd.hpp>
#include <boost/algorithm/string/replace.hpp>
#include <boost/process/shell.hpp>
#include <boost/algorithm/string/trim.hpp>
#include <boost/algorithm/string/join.hpp>
#include <string>
#include <vector>
namespace boost
{
namespace process
{
namespace detail
{
namespace posix
{
inline std::string build_cmd_shell(const std::string & exe, std::vector<std::string> && data)
{
std::string st = exe;
for (auto & arg : data)
{
boost::replace_all(arg, "\"", "\\\"");
auto it = std::find(arg.begin(), arg.end(), ' ');//contains space?
if (it != arg.end())//ok, contains spaces.
{
//the first one is put directly onto the output,
//because then I don't have to copy the whole string
arg.insert(arg.begin(), '"' );
arg += '"'; //thats the post one.
}
if (!st.empty())//first one does not need a preceeding space
st += ' ';
st += arg;
}
return st ;
}
inline std::vector<std::string> build_args(const std::string & data)
{
std::vector<std::string> st;
typedef std::string::const_iterator itr_t;
//normal quotes outside can be stripped, inside ones marked as \" will be replaced.
auto make_entry = [](const itr_t & begin, const itr_t & end)
{
std::string data;
if ((*begin == '"') && (*(end-1) == '"'))
data.assign(begin+1, end-1);
else
data.assign(begin, end);
boost::replace_all(data, "\\\"", "\"");
return data;
};
bool in_quote = false;
auto part_beg = data.cbegin();
auto itr = data.cbegin();
for (; itr != data.cend(); itr++)
{
if (*itr == '"')
in_quote ^= true;
if (!in_quote && (*itr == ' '))
{
//alright, got a space
if ((itr != data.cbegin()) && (*(itr -1) != ' ' ))
st.push_back(make_entry(part_beg, itr));
part_beg = itr+1;
}
}
if (part_beg != itr)
st.emplace_back(make_entry(part_beg, itr));
return st;
}
template<typename Char>
struct exe_cmd_init;
template<>
struct exe_cmd_init<char> : boost::process::detail::api::handler_base_ext
{
exe_cmd_init(const exe_cmd_init & ) = delete;
exe_cmd_init(exe_cmd_init && ) = default;
exe_cmd_init(std::string && exe, std::vector<std::string> && args)
: exe(std::move(exe)), args(std::move(args)) {};
template <class Executor>
void on_setup(Executor& exec)
{
if (exe.empty()) //cmd style
{
exec.exe = args.front().c_str();
exec.cmd_style = true;
}
else
exec.exe = &exe.front();
if (!args.empty())
{
cmd_impl = make_cmd();
exec.cmd_line = cmd_impl.data();
}
}
static exe_cmd_init exe_args(std::string && exe, std::vector<std::string> && args) {return exe_cmd_init(std::move(exe), std::move(args));}
static exe_cmd_init cmd (std::string && cmd)
{
auto args = build_args(cmd);
return exe_cmd_init({}, std::move(args));
}
static exe_cmd_init exe_args_shell(std::string&& exe, std::vector<std::string> && args)
{
auto cmd = build_cmd_shell(std::move(exe), std::move(args));
std::vector<std::string> args_ = {"-c", std::move(cmd)};
std::string sh = shell().string();
return exe_cmd_init(std::move(sh), std::move(args_));
}
static exe_cmd_init cmd_shell(std::string&& cmd)
{
std::vector<std::string> args = {"-c", "\"" + cmd + "\""};
std::string sh = shell().string();
return exe_cmd_init(
std::move(sh),
{std::move(args)});
}
private:
inline std::vector<char*> make_cmd();
std::string exe;
std::vector<std::string> args;
std::vector<char*> cmd_impl;
};
std::vector<char*> exe_cmd_init<char>::make_cmd()
{
std::vector<char*> vec;
if (!exe.empty())
vec.push_back(&exe.front());
for (auto & v : args)
vec.push_back(&v.front());
vec.push_back(nullptr);
return vec;
}
}}}}
#endif
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