regular expression

[James G. Braum]

Can someone tell me what this regular expression is matching?

/\s*([A-Za-z0-9_\u00C0-\u00FF]+\*)|([A-Za-z0-9_\u00C0-\u00FF]+)|(["][^"]*["]
)|([\(\)])\s*/

[Andrew Urquhart]

Re: regular expression

*James G. Braum* wrote:[color=blue]
> Can someone tell me what this regular expression is matching?
>
>[/color]
/\s*([A-Za-z0-9_\u00C0-\u00FF]+\*)|([A-Za-z0-9_\u00C0-\u00FF]+)|(["][^"]
*["][color=blue]
> )|([\(\)])\s*/[/color]

Not sure if you're having a laugh, but anyhoo:

zero or more white space characters then store matches to one or more of
any of these characters: A to Z regardless of case, 0 to 9 or UTF-16
characters represented in hexadecimal character codes by 00C0 to 00FF,
all followed by a single asterisk

or

store matches to one or more of any of these characters: A to Z
regardless of case, 0 to 9 or UTF-16 characters represented in
hexadecimal character codes by 00C0 to 00FF

or

store matches to " followed by zero or more characters that are not "
followed by a "

or

store matches to either an opening or closing round bracket that is
followed by zero or more white space characters


NB: There's significant scope for improvement, it's a rather inefficient
regular expression.
--
Andrew Urquhart
- FAQ: www.jibbering.com/faq/
- Archive: www.google.com/groups?q=comp.lang.javascript
- My reply address is invalid, use: www.andrewu.co.uk/contact/

[Andrew Urquhart]

Re: regular expression

*Andrew Urquhart* wrote:
Oh dear, I omitted the underscores, a correction follows:

[snip][color=blue]
> zero or more white space characters then store matches to one or more
> of any of these characters: A to Z regardless of case, 0 to 9 or[/color]

an underscore or
[color=blue]
> UTF-16 characters represented in hexadecimal character codes by 00C0
> to 00FF, all followed by a single asterisk
>
> or
>
> store matches to one or more of any of these characters: A to Z
> regardless of case, 0 to 9 or[/color]

an underscore or
[color=blue]
> UTF-16 characters represented in
> hexadecimal character codes by 00C0 to 00FF[/color]
[snip]
--
Andrew Urquhart
- My reply address is invalid, use: www.andrewu.co.uk/contact/

[Thomas 'PointedEars' Lahn]

Re: regular expression

James G. Braum wrote:[color=blue]
> Can someone tell me what this regular expression is matching?
>
> /\s*([A-Za-z0-9_\u00C0-\u00FF]+\*)|([A-Za-z0-9_\u00C0-\u00FF]+)|(["][^"]*["]
> )|([\(\)])\s*/[/color]

The same as

/\s*(([0-9a-z_\u00C0-\u00FF]+)\*)|("[^"]*")|([\(\)])\s*/i

But $1 and $2 (and RegExp.exec(... )[1] and RegExp.exec(... )[2]
respectively) need to be exchanged then.

<http://devedge.netscap e.com/library/manuals/2000/javascript/1.5/reference/regexp.html#119 3136>


PointedEars

[Thomas 'PointedEars' Lahn]

Re: regular expression

James G. Braum wrote:[color=blue]
> Can someone tell me what this regular expression is matching?
>
> /\s*([A-Za-z0-9_\u00C0-\u00FF]+\*)|([A-Za-z0-9_\u00C0-\u00FF]+)|(["][^"]*["]
> )|([\(\)])\s*/[/color]

The same as

/\s*(([0-9a-z_\u00C0-\u00FF]+)\*)|("[^"]*")|([\(\)])\s*/i

See
<http://devedge.netscap e.com/library/manuals/2000/javascript/1.5/reference/regexp.html#119 3136>


PointedEars