[antlr-interest] File spec grammar

[jbb at acm.org]

Mr. Lischke :-

You asked:
>Does anybody have an ANTLR grammar to fully parse a file name? I
>tried several approaches but either got ambiguities or had to
>simplify the grammar so much that I cannot differentiate anymore
>between path parts and file names. Is it at all possible to parse a
>file name using EBNF?

I haven't actually tried this using Antlr but how about:

filename :
   ( '/' | "./" | "../" | "~/" )? name ( '/' name )* 
;

name :
   ( character | '.' ) ( character | '.' )*
;

character : LETTER | DIGIT | SPECIAL ;

LETTER  : 'a' .. 'z' | 'A' .. 'Z' ;
DIGIT   : '0' .. '9' ;
SPECIAL : '_' | '~' | ',' | ' ' | '+' | '-' ; // and probably more here...

and you did mean unix filenames, right?

hope this helps...

	-jbb


 
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