ns2/Parser.java

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package ns2;

public class Parser {
    public static Parameter parse(String[] args) throws IllegalArgumentException {
        String net         = "";
        String trace       = "";
        String activity    = "";
        String mobility    = "";
        String config      = "";
        double begin       = 0;
        double end         = 0;
        double penetration = 0;
        long   seed        = 0;
        
        boolean hasNet         = false;
        boolean hasTrace       = false;
        boolean hasActivity    = false;
        boolean hasMobility    = false;
        boolean hasConfig      = false;
        boolean hasBegin       = false;
        boolean hasEnd         = false;
        boolean hasPenetration = false;
        
        for (int i=0; i<args.length; i++) {
            if ("ns2".equals(args[i].toLowerCase())) {
            }
            
            if ("-n".equals(args[i])) {
                // net file
                if (++i<args.length) {
                    if (!args[i].startsWith("-")) {
                        net = args[i];
                        hasNet = true;
                    }
                }
            }
            
            if ("-t".equals(args[i])) {
                // trace file
                if (++i<args.length) {
                    if (!args[i].startsWith("-")) {
                        trace = args[i];
                        hasTrace = true;
                    }
                }
            }
            
            if ("-a".equals(args[i])) {
                // activity file
                if (++i<args.length) {
                    if (!args[i].startsWith("-")) {
                        activity = args[i];
                        hasActivity = true;
                    }
                }
            }
            
            if ("-m".equals(args[i])) {
                // mobility file
                if (++i<args.length) {
                    if (!args[i].startsWith("-")) {
                        mobility = args[i];
                        hasMobility = true;
                    }
                }
            }
            
            if ("-c".equals(args[i])) {
                // config file
                if (++i<args.length) {
                    if (!args[i].startsWith("-")) {
                        config = args[i];
                        hasConfig = true;
                    }
                }
            }
            
            if ("-b".equals(args[i])) {
                // begin time
                if (++i<args.length) {
                    begin = Double.parseDouble(args[i]);
                    if (begin >= 0) {
                        hasBegin = true;
                    }
                }
            }
            
            if ("-e".equals(args[i])) {
                // begin time
                if (++i<args.length) {
                    end = Double.parseDouble(args[i]);
                    if (begin < end) { 
                        hasEnd = true;
                    }
                }
            }
            
            if ("-p".equals(args[i])) {
                // penetration factor
                if (++i<args.length) {
                    if (!args[i].startsWith("-")) {
                        penetration = Double.parseDouble(args[i]);
                        if (penetration>=0 && penetration<=1) {
                            hasPenetration = true;
                        } else {
                            penetration = 0;
                        }
                    }
                }
            }
            
            if ("-s".equals(args[i])) {
                // seed value
                if (++i<args.length) {
                    seed = Long.parseLong(args[i]);
                    //hasSeed = true;
                }
            }
        }
        
        // must have net file argument
        if (!hasNet) {
            throw new IllegalArgumentException("no netfile specified!");
        }
        
        // must have trace file argument
        if (!hasTrace) {
            throw new IllegalArgumentException("no tracefile specified!");
        }
        
        // must have activity file argument
        if (!hasActivity) {
            throw new IllegalArgumentException("no activity specified!");
        }
        
        // must have mobility file argument
        if (!hasMobility) {
            throw new IllegalArgumentException("no mobility specified!");
        }
        
        // must have config file argument
        if (!hasConfig) {
            throw new IllegalArgumentException("no config specified!");
        }
        
        // defaults to begin of sumo simulation
        if (!hasBegin) {
            begin = 0;
        }
        
        // defaults to end of sumo simulation
        if (!hasEnd) {
            // end not known yet
            end = begin;
        }

        // penetration argument: optional
        
        // seed argument: optional
                
        return new Parameter(net, trace, activity, mobility, config, begin, end, penetration, seed, hasPenetration);
    }
}