Re: REGEX hell
On Thu, Nov 25, 2010 at 10:48 AM, Peter Boughton wrote: > > To be clear, CF uses the Apache ORO library, which is different to both Perl > and Java Regex. I've found the QuickREx Eclipse plugin *invaluable* for regular expression work. It supports several different regex engines, has "libraries" of regexes... It's fantastic! :Den -- The most important part of education is proper training in the nursery. Plato ~| Order the Adobe Coldfusion Anthology now! http://www.amazon.com/Adobe-Coldfusion-Anthology/dp/1430272155/?tag=houseoffusion Archive: http://www.houseoffusion.com/groups/cf-talk/message.cfm/messageid:339537 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/groups/cf-talk/unsubscribe.cfm
Re: REGEX hell
To be clear, CF uses the Apache ORO library, which is different to both Perl and Java Regex. ~| Order the Adobe Coldfusion Anthology now! http://www.amazon.com/Adobe-Coldfusion-Anthology/dp/1430272155/?tag=houseoffusion Archive: http://www.houseoffusion.com/groups/cf-talk/message.cfm/messageid:339536 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/groups/cf-talk/unsubscribe.cfm
Re: REGEX hell
In this situation, there is no real difference between lazy or greedy - because the quantified item is mutually exclusive with the next characters - i.e. "\s+" cannot match "\)" - so it will always consume to the end of the whitespace. It is better to not assume lazy or greedy as a 'default' and always decide which one makes sense for the current scenario. ~| Order the Adobe Coldfusion Anthology now! http://www.amazon.com/Adobe-Coldfusion-Anthology/dp/1430272155/?tag=houseoffusion Archive: http://www.houseoffusion.com/groups/cf-talk/message.cfm/messageid:339535 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/groups/cf-talk/unsubscribe.cfm
Re: REGEX hell
... since we're throwing out recommendations for our favorite "so glad this exists because of how badly I suck at reg ex" apps, I've found http://gskinner.com/RegExr/desktop/ to be a -very- valuable tool. On Thu, Nov 25, 2010 at 8:56 AM, Dave Merrill wrote: > > Be a little careful, Regex Coach works with perl regex syntax; cf > needs java syntax usually, with some differences. > > I can't recommend Regex Buddy highly enough. It's not free, but it's > really quite excellent, supports a variety of different flavors. > > Dave > > > On Thu, Nov 25, 2010 at 10:17 AM, Jerry Barnes > wrote: > > > > Regex that is useful but unfortunately, my skills are pretty weak in that > > area. > > > > I use an application named "The Regex Coach' to build my code. It has a > > place to put the string you are trying to match and another place to put > > your regex code. As you modify the regex code, it highlights how much of > > the string matches. > > > > The program is free with the option of donating via paypal to the creator > if > > you like it. > > > > > > > > J > > > > - > > > > No man's life, liberty, or property is safe while the legislature is in > > session. - Mark Twain > > > > > > > > ~| Order the Adobe Coldfusion Anthology now! http://www.amazon.com/Adobe-Coldfusion-Anthology/dp/1430272155/?tag=houseoffusion Archive: http://www.houseoffusion.com/groups/cf-talk/message.cfm/messageid:339533 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/groups/cf-talk/unsubscribe.cfm
Re: REGEX hell
Be a little careful, Regex Coach works with perl regex syntax; cf needs java syntax usually, with some differences. I can't recommend Regex Buddy highly enough. It's not free, but it's really quite excellent, supports a variety of different flavors. Dave On Thu, Nov 25, 2010 at 10:17 AM, Jerry Barnes wrote: > > Regex that is useful but unfortunately, my skills are pretty weak in that > area. > > I use an application named "The Regex Coach' to build my code. It has a > place to put the string you are trying to match and another place to put > your regex code. As you modify the regex code, it highlights how much of > the string matches. > > The program is free with the option of donating via paypal to the creator if > you like it. > > > > J > > - > > No man's life, liberty, or property is safe while the legislature is in > session. - Mark Twain > > > ~| Order the Adobe Coldfusion Anthology now! http://www.amazon.com/Adobe-Coldfusion-Anthology/dp/1430272155/?tag=houseoffusion Archive: http://www.houseoffusion.com/groups/cf-talk/message.cfm/messageid:339532 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/groups/cf-talk/unsubscribe.cfm
Re: REGEX hell
Regex that is useful but unfortunately, my skills are pretty weak in that area. I use an application named "The Regex Coach' to build my code. It has a place to put the string you are trying to match and another place to put your regex code. As you modify the regex code, it highlights how much of the string matches. The program is free with the option of donating via paypal to the creator if you like it. J - No man's life, liberty, or property is safe while the legislature is in session. - Mark Twain ~| Order the Adobe Coldfusion Anthology now! http://www.amazon.com/Adobe-Coldfusion-Anthology/dp/1430272155/?tag=houseoffusion Archive: http://www.houseoffusion.com/groups/cf-talk/message.cfm/messageid:339530 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/groups/cf-talk/unsubscribe.cfm
Re: REGEX hell
I agree that the * (0 or more) should be avoided unless needed but in this case I felt it was. There may or may not be a space. There may be more than one space. There may be a space character being seen as a space (like a tab). Because we don't know if a space will actually exist, the * is needed. The +? (1 or more but as few as needed) assumes that at least one space exists. As a rule I don't over-worry about using * when it's used with a \s (space) unless I really have to. On Tue, Nov 23, 2010 at 12:20 AM, andy matthews wrote: > > For future reference you should avoid using * where possible as it can > easily lead to overmatching. Even using + would be better although both + > and * alone are greedy matches. An even better solution would be to use a > lazy match like so: > > \)\s+?\) > > The ? following the + tells the regex engine to match as little as > possible. > > > > andy > > -Original Message- > From: Rick Colman [mailto:rcol...@cox.net] > Sent: Monday, November 22, 2010 9:59 PM > To: cf-talk > Subject: Re: REGEX hell > > > This worked!! TNX. > > On 11/22/2010 6:04 PM, Michael Dinowitz wrote: > > Are you sure it's a space and not 2 spaces? Or a tab? Try using \s* to > > indicate that there may be one or more space characters. > > > > \)\s*\) > > > > > > > > On Mon, Nov 22, 2010 at 8:48 PM, Rick Colman wrote: > > > >> I am trying to replace two trailing parens )) with a single paren. > >> > >> here is a sample string: > >> > >> (K AAA) (N AAC) (E GAA) ) > >> > >> looks like there is a space in between the two )), so I tried: > >> > >> > >> > >> but this is not working. > >> > >> Any ideas as two what is wrong greatly appreciated. > >> > >> > >> > > > > > > ~| Order the Adobe Coldfusion Anthology now! http://www.amazon.com/Adobe-Coldfusion-Anthology/dp/1430272155/?tag=houseoffusion Archive: http://www.houseoffusion.com/groups/cf-talk/message.cfm/messageid:339446 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/groups/cf-talk/unsubscribe.cfm
RE: REGEX hell
For future reference you should avoid using * where possible as it can easily lead to overmatching. Even using + would be better although both + and * alone are greedy matches. An even better solution would be to use a lazy match like so: \)\s+?\) The ? following the + tells the regex engine to match as little as possible. andy -Original Message- From: Rick Colman [mailto:rcol...@cox.net] Sent: Monday, November 22, 2010 9:59 PM To: cf-talk Subject: Re: REGEX hell This worked!! TNX. On 11/22/2010 6:04 PM, Michael Dinowitz wrote: > Are you sure it's a space and not 2 spaces? Or a tab? Try using \s* to > indicate that there may be one or more space characters. > > \)\s*\) > > > > On Mon, Nov 22, 2010 at 8:48 PM, Rick Colman wrote: > >> I am trying to replace two trailing parens )) with a single paren. >> >> here is a sample string: >> >> (K AAA) (N AAC) (E GAA) ) >> >> looks like there is a space in between the two )), so I tried: >> >> >> >> but this is not working. >> >> Any ideas as two what is wrong greatly appreciated. >> >> >> > ~| Order the Adobe Coldfusion Anthology now! http://www.amazon.com/Adobe-Coldfusion-Anthology/dp/1430272155/?tag=houseoffusion Archive: http://www.houseoffusion.com/groups/cf-talk/message.cfm/messageid:339445 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/groups/cf-talk/unsubscribe.cfm
Re: REGEX hell
This worked!! TNX. On 11/22/2010 6:04 PM, Michael Dinowitz wrote: > Are you sure it's a space and not 2 spaces? Or a tab? Try using \s* to > indicate that there may be one or more space characters. > > \)\s*\) > > > > On Mon, Nov 22, 2010 at 8:48 PM, Rick Colman wrote: > >> I am trying to replace two trailing parens )) with a single paren. >> >> here is a sample string: >> >> (K AAA) (N AAC) (E GAA) ) >> >> looks like there is a space in between the two )), so I tried: >> >> >> >> but this is not working. >> >> Any ideas as two what is wrong greatly appreciated. >> >> >> > ~| Order the Adobe Coldfusion Anthology now! http://www.amazon.com/Adobe-Coldfusion-Anthology/dp/1430272155/?tag=houseoffusion Archive: http://www.houseoffusion.com/groups/cf-talk/message.cfm/messageid:339444 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/groups/cf-talk/unsubscribe.cfm
Re: REGEX hell
Are you sure it's a space and not 2 spaces? Or a tab? Try using \s* to indicate that there may be one or more space characters. \)\s*\) On Mon, Nov 22, 2010 at 8:48 PM, Rick Colman wrote: > > I am trying to replace two trailing parens )) with a single paren. > > here is a sample string: > > (K AAA) (N AAC) (E GAA) ) > > looks like there is a space in between the two )), so I tried: > > > > but this is not working. > > Any ideas as two what is wrong greatly appreciated. > > > ~| Order the Adobe Coldfusion Anthology now! http://www.amazon.com/Adobe-Coldfusion-Anthology/dp/1430272155/?tag=houseoffusion Archive: http://www.houseoffusion.com/groups/cf-talk/message.cfm/messageid:339443 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/groups/cf-talk/unsubscribe.cfm
Re: REGEX hell
no need to escape the space char with a slash. are you sure it is only 1 space, and are you sure it is a space char (chr(32))? If so, remove the slash in front of the space, and it should work. also, pet peeve, no need for the ## around the function. Works either way, though, so ignore if you prefer. Jerry Milo Johnson On Mon, Nov 22, 2010 at 8:48 PM, Rick Colman wrote: > > I am trying to replace two trailing parens )) with a single paren. > > here is a sample string: > > (K AAA) (N AAC) (E GAA) ) > > looks like there is a space in between the two )), so I tried: > > > > but this is not working. > > Any ideas as two what is wrong greatly appreciated. > > > ~| Order the Adobe Coldfusion Anthology now! http://www.amazon.com/Adobe-Coldfusion-Anthology/dp/1430272155/?tag=houseoffusion Archive: http://www.houseoffusion.com/groups/cf-talk/message.cfm/messageid:339442 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/groups/cf-talk/unsubscribe.cfm
REGEX hell
I am trying to replace two trailing parens )) with a single paren. here is a sample string: (K AAA) (N AAC) (E GAA) ) looks like there is a space in between the two )), so I tried: but this is not working. Any ideas as two what is wrong greatly appreciated. ~| Order the Adobe Coldfusion Anthology now! http://www.amazon.com/Adobe-Coldfusion-Anthology/dp/1430272155/?tag=houseoffusion Archive: http://www.houseoffusion.com/groups/cf-talk/message.cfm/messageid:339441 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/groups/cf-talk/unsubscribe.cfm
