void ParseCommandLine( CmdLine & cl ) {
while( cl.Argc() > 1 ) {
string sflag = cl.Argv(1);
cl.Shift();
FlagName fn = StringToFlag( sflag );
if ( fn == fnNone ) {
throw Error( "Invalid command line option: " + sflag );
}
pair <bool,int> vals = GetFlagValues( fn );
if ( vals.second ) {
if ( cl.Argc() == 1 ) {
throw Error( "Missing command line parameter for " + sflag );
}
CommandParam = cl.Argv(1);
cl.Shift();
}
if ( vals.first ) {
if ( CommandName != fnNone ) {
throw Error( "Only one command option allowed" );
}
CommandName = fn;
}
else {
switch( fn ) {
case fnExpand: Expand = true; break;
case fnForce: CheckExist = false ; break;
case fnSys: UseSys = true; break;
case fnUnix: Unix = true; break;
default: throw Error( "bad option " );
}
}
}
if ( CommandName == fnNone ) {
throw Error( "Need one of " + CommandList() );
}
}
