getting started with parsing...

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  1. #1
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    getting started with parsing...

    Hey all, I'd like to be able to write a program in which a user can input text such as "open north" and it will open the door to the north... you know, like Zork or a MUD.

    But of course I need to know how to parse strings to find certain words and then use a hash table to use the correct function (if memory serves me), and that's about ALL I know about command parsing.

    If someone could get me started or provide a helpful link I'd be indebted!

  2. #2
    pronounced 'fib' FillYourBrain's Avatar
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    I like a parsing loop. One character at a time. you use each character to "walk" down a keyword tree/dictionary. When you hit a node you have a complete keyword. Every keyword hit puts you in a new state. Get what I'm saying? of course it can get REALLY complicated if you're not doing a simple language but for ZORK it should work just fine.
    "You are stupid! You are stupid! Oh, and don't forget, you are STUPID!" - Dexter

  3. #3
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    Do a search for Spirit and C++ and parsing, its a very cool c++ parsing library, very easy to use, and very well documented.

    Unless you are after a learning experience.
    The crows maintain that a single crow could destroy the heavens. Doubtless this is so. But it proves nothing against the heavens, for the heavens signify simply: the impossibility of crows.

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