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[REBOL] Re: A question about a regular expression

From: gabriele:colellachiara at: 17-Oct-2004 13:58

Hi Lethalman, On Sunday, October 17, 2004, 1:10:12 PM, you wrote:
>>You only need "*" or something else too? >>
L> ? is good too... :) Ok. L> PS: se vuoi parla anche italiano In inglese ci capiscono anche gli altri. ;-) One way is to use FIND/ANY that supports wildcards. However, like most RE engines do, it can match too much:
>> find/any/tail "<a href='http://bla'>Test</a><a href='http://blabla'>Test2</a>" "<a href='*'>"
== "Test2</a>" Another way is to convert the strings to PARSE rules, and then use them.
>> wildcards: "*?" >> text: complement charset wildcards >> result: [] >> wild-rule: [some [copy str any text (append result str) ["*" (append result 'thru) | "?" (append result 'skip)]]] >> parse/all "<a href='*'>" wild-rule >> result
== ["<a href='" thru "'>"] Note that this won't work if your string has something like "*?" or "**" in it (it will work for "?*"). You can enhance it to support that if you think you need it. Now you can:
>> parse/all "<a href='http://bla'>Test</a><a href='http://blabla'>Test2</a>" [result mark:]
== false
>> mark
== "Test</a><a href='http://blabla'>Test2</a>" I think this should be enough to give you a start. :) Regards, Gabriele. -- Gabriele Santilli <[g--santilli--tiscalinet--it]> -- REBOL Programmer Amiga Group Italia sez. L'Aquila --- SOON: