Regex replace using a repetitive capture

Posted by Zac on Stack Overflow See other posts from Stack Overflow or by Zac
Published on 2010-05-21T16:41:57Z Indexed on 2010/05/21 17:20 UTC
Read the original article Hit count: 202

Filed under:

regex

|

capture

I have a table like:

A | 1  
A | 2  
B | 1  
B | 2  
B | 3

I'm trying to transform it to look like this:

A { 1 | 2 }  
B { 1 | 2 | 3 }

I've come up with this which will match correctly I just can't figure out how to get the repeated capture out.

(A|B)|(\d)(\r\n\1|(\d))*

© Stack Overflow or respective owner

Related posts about regex

Find multiple regex in each line and skip result if one of the regex doesn't match

as seen on Stack Overflow - Search for 'Stack Overflow'
I have a list of variables: variables = ['VariableA', 'VariableB','VariableC'] which I'm going to search for, line by line ifile = open("temp.txt",'r') d = {} match = zeros(len(variables)) for line in ifile: emptyCells=0 for i in range(len(variables)): regex = r'('+variables[i]+r')[:|=|\(](-… >>> More
OWASP Regex Repository: Is this regex correct?

as seen on Stack Overflow - Search for 'Stack Overflow'
I was looking at the regular expression for validating various data types from the (OWASP Regex Repository). One of the regular expressions in there is called safetext and looks like: ^[a-zA-Z0-9\s.\-]+$ My first question is: Is this regular expression correct? complementary question If this… >>> More
Make a Perl-style regex interpreter behave like a basic or extended regex interpreter

as seen on Stack Overflow - Search for 'Stack Overflow'
I am writing a tool to help students learn regular expressions. I will probably be writing it in Java. The idea is this: the student types in a regular expression and the tool shows which parts of a text will get matched by the regex. Simple enough. But I want to support several different regex… >>> More
JS regex isn't matching, even thought it works with a regex tester

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm writing a piece of client-side javascript code that takes a function and finds the derivative of it, however, the regex that's supposed to match with the power rule fails to work in the context of the javascript program, even though it sucessfully matches when it's used with an independent regex… >>> More
c# RegEx with "|"

as seen on Stack Overflow - Search for 'Stack Overflow'
I need to be able to check for a pattern with | in them. For example an expression like d*|*t should return true for a string like "dtest|test". I'm no regex hero so I just tried a couple of things, like: Regex Pattern = new Regex("s*\|*d"); //unable to build because of single backslash Regex Pattern… >>> More

Related posts about capture

??Database Replay Capture????

as seen on Oracle Blogs - Search for 'Oracle Blogs'
Database Replay?11g??????,??workload capture??????????????,???????? ??Workload Capture???????: ???????????????,???????2????,??????,???????????OLTP???????capture 10????1G???? ?????: ????????????????????? ??startup restrict????,?????????? … >>> More
Video capture tool: capture n frames per second

as seen on Super User - Search for 'Super User'
Is there a program that allows me to pass in a video and capture the screen at every n frames? For example maybe I want to export screenshots at 24 frames per second from point A to point B, so the program will be exporting 24 images per second. The amount of frames I would like to capture can be… >>> More
Screen capture of USB connected CE device

as seen on Server Fault - Search for 'Server Fault'
Does anyone know if there's a tool to capture a video from a CE device (like this)? I used the Windows CE Remote Zoom-in to capture stills, but for presentation purposes I would like to show moving images. The devices is connected a pc using USB. I've tried using a webcam, but I have to move the… >>> More
Screen capture of USB connected CE device

as seen on Server Fault - Search for 'Server Fault'
Does anyone know if there's a tool to capture a video from a CE device (like this)? I used the Windows CE Remote Zoom-in to capture stills, but for presentation purposes I would like to show moving images. The devices is connected a pc using USB. I've tried using a webcam, but I have to move the… >>> More
Using FiddlerCore to capture HTTP Requests with .NET

as seen on West-Wind - Search for 'West-Wind'
Over the last few weeks I’ve been working on my Web load testing utility West Wind WebSurge. One of the key components of a load testing tool is the ability to capture URLs effectively so that you can play them back later under load. One of the options in WebSurge for capturing URLs is to use its… >>> More