Mailing List Archive: Parse limitation ?

[REBOL] Parse limitation ?

From: patrick::philipot::laposte::net at: 8-Oct-2003 12:10


Hi List,

I'd like to parse a string searching for two things at the same time.
it seems to me that this is impossible.

For example, a text from which I want to extract the HREF and the SRC target.

myText: {<A HREF="#section1"><IMG SRC="foobar.gif"><A HREF="#section1">}

parse myText [
        any [ thru "HREF=" copy target to ">" (print target) |
                  thru "SRC=" copy target to ">" (print target)
        ] ; any
] ; parse

#section1
#section1

parse myText [
        any [ thru "SRC=" copy target to ">" (print target) |
                  thru "HREF=" copy target to ">" (print target)
        ] ; any
] ; parse

foobar.gif
#section1


The result is different depending which rule comes first. The only way I see as a workaround 
is to parse the text twice. Is there a better (smarter) way?

Regards
Patrick