On Tuesday 10 March 2009 15:44, David Villalobos Cambronero wrote:
> Hi, I need to match some regular expresions, I think I can use Gambas to
> do it, in the documentation says somethig like this:
> (?i)\b[a-z0-9._%\...@[a-z0-9._%\-]+\.[a-z]{2,4}\b
> But how can I use it, any idea?
That regular expression is meant to extract a valid email address. (It may
not be a working email address, but it should at least be legal.)
One thing I should probably make clearer in the documentation is that due
to the way Gambas uses character constants like \n, you need to double up
on backslashes when you're specifying a regular expression as a constant.
So if the user is entering it or you're reading it from a file, it might
be a\s+(b\S+) but if you're hardcoding it into your program it needs to
be "a\\s+(b\\S+)". Here is a Gambas script to demonstrate (just tried it
in my own console and it runs in 2.9, but watch out for my email client's
word wrap.)
USE "gb.pcre"
DIM myemail AS String
DIM validemail AS String
DIM re AS RegExp
myemail = "f...@bar"
re = new RegExp(myemail, "(?i)\\b[a-z0-9\\._%\\...@[a-z0-9._%\\-]+\\.[a-z]
{2,4}\\b")
validemail = re.Text
if not validemail then
print myemail & " is not a legal email address.\n"
else
print myemail & "\n"
end if
Rob
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