Command Line parser requirements

• Written in C# so command line arguments come in a string array.
• All arguments are switches some of those come with vaules (value switches) and some do not (binary switches)
• Values in value switches are never optional. Values do not start with '-' or '/'
• Every element of the input array of a conforming command line belongs to a switch (or its value). That is there are no commands, just switches.
• An example of binary switch: -a; an example of value switch: -b fidget
• Switches start with either - (but not --) or / - those are treated the same
• Switches can have two forms representing the same switch, the short form was shown above the long form start with --. Example: --thingamabob bleh
• Both binary and value switches can have a long or a short form
• Switches can have either long or short form or both
• Several short switches can be comnibed into one: -abcd. This combination cannot contain more than one value switch.
• There are four types of value switches: integer (non-negative), string, list (e.g --servers server1 server2 server3) and quoted list.
• Quoted list looks like this: --switches-to-pass-through "-a something -b -c".
• The quoted part will be sent as a single array element to the C# program from command line. Note that quotes themselves are not passed by OS to the argument list.
• Whatever is inside the quoted list value does not need to be paresed further.
• It expected that the parser is aware of the type of every switch, so that if it's a value switch it will know to treat the subsequent input array item as the switch argument (or several argurments for list switches).