void exec_stream_t::start( std::string const & program, exec_stream_t::next_arg_t & next_arg )
{
std::string arguments;
while( std::string const * arg=next_arg.next() ) {
if( arg->find_first_of( " \t\"" )!=std::string::npos ) {
arguments+=" \"";
std::string::size_type cur=0;
while( cur<arg->size() ) {
std::string::size_type next=arg->find( '"', cur );
if( next==std::string::npos ) {
next=arg->size();
arguments.append( *arg, cur, next-cur );
cur=next;
}else {
arguments.append( *arg, cur, next-cur );
arguments+="\\\"";
cur=next+1;
}
}
arguments+="\"";
}else {
arguments+=" "+*arg;
}
}
start( program, arguments );
}
void exec_stream_t::impl_t::split_args( std::string const & program, exec_stream_t::next_arg_t & next_arg )
{
typedef std::vector< std::size_t > arg_sizes_t;
arg_sizes_t arg_sizes;
m_child_args.new_data( program.size()+1 );
std::string::traits_type::copy( m_child_args.data(), program.c_str(), program.size()+1 );
arg_sizes.push_back( program.size()+1 );
while( std::string const * s=next_arg.next() ) {
m_child_args.append_data( s->c_str(), s->size()+1 );
arg_sizes.push_back( s->size()+1 );
}
char ** argp_end=m_child_argp.new_data( arg_sizes.size()+1 );
char * argp=m_child_args.data();
for( arg_sizes_t::iterator i=arg_sizes.begin(); i!=arg_sizes.end(); ++i ) {
*argp_end=argp;
argp+=*i;
++argp_end;
}
*argp_end=0;
}