I am trying to create a text editor to validate user entries according to a set of rules
here are some examples
- Rule 1: get_word "anyword";
- Rule 2: get_number "0-9";
- Rule 3: get_words "any number of words";
So these being my 3 basic rules if a user were to type the following lines of text
- get_word Dog;
- get_number 2012;
- get_word Cat
- get_word simple editor?
- get_words The quick brown fox;
I want to parse each line and return the rule that is the best match
so the first line get_word Dog; would satisfy Rule 1
get_number 2012; would satisfy Rule 2
While get_word Cat would not satisfy any of the 3 rules as it doesn't end in ;(semi-colon)
Also get_word simple editor? would not satisfy any of the rules as it too doesn't end in a ;
and it has more than 1 word
get_words The quick brown fox; would satisfy Rule 3.
So all I really want is to check each line against the set of rules and get a "Yes that's rule 2" or "Sorry, that doesn't match any rule"
How can i get this done, any examples would really help
Note I recently came across pyparsing (Paul McGuire) and I hope this is the right library or am I barking up the wrong tree?