DW RegExp broken, or me?

[Jerry Baker]

If I have the following string:

theText = "http://www.google.com/image.gif"

and I apply this regular expression to it in DW:

theText = theText.replace(/\.(.*)$/, "$1");

I get the whole string. It seems to me that it should only return "gif".
The parenthesis is between an end-of-line anchor and an escaped dot.
That should mean that $1 is only the text between the end of the line
and the last dot.

Am I getting too sleepy?

--
Jerry Baker

Automatic ALT text on all images
HTML and XHTML doctype switching with a mouse click
"Insert Image+" and "Insert (X)HTML Doctypes" Extensions
[url]http://www.macromedia.com/cfusion/exchange/index.cfm?view=sn103&authorid=21726084[/url]

[Joe Makowiec]

On 18 Nov 2005 in macromedia.exchange.extensions.dreamweaver, Jerry
Baker wrote:

> If I have the following string:
>
> theText = "http://www.google.com/image.gif"
>
> and I apply this regular expression to it in DW:
>
> theText = theText.replace(/\.(.*)$/, "$1");
>
> I get the whole string. It seems to me that it should only return
> "gif". The parenthesis is between an end-of-line anchor and an
> escaped dot. That should mean that $1 is only the text between the
> end of the line and the last dot.
>
> Am I getting too sleepy?

I just ran it through the regex tester in XNews
([url]http://xnews.newsguy.com[/url]). You've got 3 dots (periods, 0x2e) in
theText, and your expression matches the first dot, so the expression
returns "google.com/image.gif" Try looking for the first dot after the
slash: /\/.*\.(.*)$/

--
Joe Makowiec
[url]http://makowiec.net/[/url]
Email: [url]http://makowiec.net/email.php[/url]

[Jerry Baker]

Joe Makowiec wrote:

> I just ran it through the regex tester in XNews
> ([url]http://xnews.newsguy.com[/url]). You've got 3 dots (periods, 0x2e) in
> theText, and your expression matches the first dot, so the expression
> returns "google.com/image.gif" Try looking for the first dot after the
> slash: /\/.*\.(.*)$/

Then DW gives me "http:gif"

--
Jerry Baker

Automatic ALT text on all images
HTML and XHTML doctype switching with a mouse click
"Insert Image+" and "Insert (X)HTML Doctypes" Extensions
[url]http://www.macromedia.com/cfusion/exchange/index.cfm?view=sn103&authorid=21726084[/url]

[Joe Makowiec]

On 18 Nov 2005 in macromedia.exchange.extensions.dreamweaver, Jerry
Baker wrote:

> Joe Makowiec wrote:

>> I just ran it through the regex tester in XNews
>> ([url]http://xnews.newsguy.com[/url]). You've got 3 dots (periods, 0x2e) in
>> theText, and your expression matches the first dot, so the
>> expression returns "google.com/image.gif" Try looking for the
>> first dot after the slash: /\/.*\.(.*)$/

>
> Then DW gives me "http:gif"

Well, think this through. What precedes any of what you actually want?
If they all have [url]http://,[/url] then include that in the regex:

http:\/\/

If they aren't all preceded by [url]http://,[/url] then it would be (http:\/\/)?
(the ? means "0 or one of what's in the preceding ()"); note that this
would change your reference from $1 to $2.

Then you can have anything, up to the next slash:

..*\/

Then anything:

..*

Then the dot preceding the extension:

\.

then the extension at the end of the line:
(.*)$

and the whole regex is:

/http:\/\/.*\/.*\.(.*)$/

--
Joe Makowiec
[url]http://makowiec.net/[/url]
Email: [url]http://makowiec.net/email.php[/url]

[Jerry Baker]

Joe Makowiec wrote:

> and the whole regex is:
>
> /http:\/\/.*\/.*\.(.*)$/

Thanks for the assistance. The regex that finally worked is:

..match(/\.[^\/]*$/)

--
Jerry Baker

Automatic ALT text on all images
HTML and XHTML doctype switching with a mouse click
"Insert Image+" and "Insert (X)HTML Doctypes" Extensions
[url]http://www.macromedia.com/cfusion/exchange/index.cfm?view=sn103&authorid=21726084[/url]