How to find using wildcards?

lockheed · 01-06-2015, 01:32 PM

I converted a book from PDF to EPUB and using heuristics, the result is great. The only thing is that I have page numbers in middle of text. So I want to remove them all.

In code, all of them look like this:

Code:

<p class="calibre1">25</p>

I wanted to use Find & Replace function to get rid of entire piece of code, but I can't get it to work using wildcards.

I tried

Code:

<p class="calibre1">??</p>

but it doesn't work and Find function doesn't find it.

What should I type in to find every instance of code
<p class="calibre1">..</p>
with any two characters in place of ".."?

theducks · 01-06-2015, 01:53 PM

Code:

<p class="calibre1">\d+</p>

REGEX mode

\d+ matches only if there are 1 or more digits

eschwartz · 01-06-2015, 03:40 PM

Regular expressions are NOT wildcard globbing, they are much more powerful, look vaguely similar, and probably confuse a lot of people the first time they see them.

A basic intro to regular expressions might be in order.

http://www.regular-expressions.info

phossler · 01-08-2015, 10:45 PM

I find the Calibre User Manual write up on regular expressions very readable (and a little entertaining also)

http://manual.calibre-ebook.com/regexp.html

eschwartz · 01-08-2015, 11:32 PM

The calibre writeup is indeed readable, and entertaining as well.

However, http://Regular-Expressions.info has a much more comprehensive writeup, as it is an exhaustive guide, and I find that to be more useful on a personal level.
Additionally, my regex guide of choice has a pretty readable format as well, and I feel no need to switch mental tracks when offering regex suggestions (depending on the complexity of the matter) in order to *patronize* calibre's guide.

At the end of the day, either one can give you a basic rundown on the regex approach, which is what matters.

01-06-2015, 01:32 PM	#1
lockheed Member Posts: 11 Karma: 10 Join Date: Jul 2012 Device: Kindle 3G	How to find using wildcards? I converted a book from PDF to EPUB and using heuristics, the result is great. The only thing is that I have page numbers in middle of text. So I want to remove them all. In code, all of them look like this: Code: <p class="calibre1">25</p> I wanted to use Find & Replace function to get rid of entire piece of code, but I can't get it to work using wildcards. I tried Code: <p class="calibre1">??</p> but it doesn't work and Find function doesn't find it. What should I type in to find every instance of code <p class="calibre1">..</p> with any two characters in place of ".."?

01-06-2015, 01:53 PM	#2
theducks Well trained by Cats Posts: 30,939 Karma: 60358908 Join Date: Aug 2009 Location: The Central Coast of California Device: Kobo Libra2,Kobo Aura2v1, K4NT(Fixed: New Bat.), Galaxy Tab A	Code: <p class="calibre1">\d+</p> REGEX mode \d+ matches only if there are 1 or more digits

01-06-2015, 03:40 PM	#3
eschwartz Ex-Helpdesk Junkie Posts: 19,421 Karma: 85400180 Join Date: Nov 2012 Location: The Beaten Path, USA, Roundworld, This Side of Infinity Device: Kindle Touch fw5.3.7 (Wifi only)	Regular expressions are NOT wildcard globbing, they are much more powerful, look vaguely similar, and probably confuse a lot of people the first time they see them. A basic intro to regular expressions might be in order. http://www.regular-expressions.info Last edited by eschwartz; 01-06-2015 at 03:43 PM.

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01-08-2015, 10:45 PM	#4
phossler Wizard Posts: 1,087 Karma: 447222 Join Date: Jan 2009 Location: Valley Forge, PA, USA Device: Kindle Paperwhite	I find the Calibre User Manual write up on regular expressions very readable (and a little entertaining also) http://manual.calibre-ebook.com/regexp.html

01-08-2015, 11:32 PM	#5
eschwartz Ex-Helpdesk Junkie Posts: 19,421 Karma: 85400180 Join Date: Nov 2012 Location: The Beaten Path, USA, Roundworld, This Side of Infinity Device: Kindle Touch fw5.3.7 (Wifi only)	The calibre writeup is indeed readable, and entertaining as well. However, http://Regular-Expressions.info has a much more comprehensive writeup, as it is an exhaustive guide, and I find that to be more useful on a personal level. Additionally, my regex guide of choice has a pretty readable format as well, and I feel no need to switch mental tracks when offering regex suggestions (depending on the complexity of the matter) in order to patronize calibre's guide. At the end of the day, either one can give you a basic rundown on the regex approach, which is what matters.

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