Solved

Validating varying substrings

Posted on 2012-03-19
4
166 Views
Last Modified: 2012-06-21
Hello,

I am not that experienced in regex and I struggle with the following

$string = 'DEFAULT:1:  TITLE:5    AXIS:6:     UNIT:13:     LEGEND:21:   WATERMARK:1: ';
print "yes\n" if ($string =~ /^[^#]*:[0-9]+:[^#]*( +[^#]*:[0-9]+:[^#]*)*$/i)

Open in new window

This code should accept TEXT:9:TEXT  or  TEXT:99:  or  TEXT:2:"TEXT"   but should not accept
TEXT:9 or   TEXT:   or  TEXT.

The regex I have here does accept TEXT:5  which it shouldn't  :-)
0
Comment
Question by:Marc_Engrie
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
4 Comments
 
LVL 84

Accepted Solution

by:
ozo earned 125 total points
ID: 37736634
/^[^#:]*:[0-9]+:[^#:]*( +[^#:]*:[0-9]+:[^#:]*)*$/
0
 

Author Comment

by:Marc_Engrie
ID: 37737272
Yes !!!

However I do not fully understand [^#:]*:

Can you enlighten me on this so I learn something today ;-)  

Thx a lot
0
 
LVL 26

Expert Comment

by:wilcoxon
ID: 37737896
[^#:]* says to match 0 or more characters that are not # or :
0
 

Author Comment

by:Marc_Engrie
ID: 37737910
Understood and learned !

Thx :-)
0

Featured Post

Free Tool: ZipGrep

ZipGrep is a utility that can list and search zip (.war, .ear, .jar, etc) archives for text patterns, without the need to extract the archive's contents.

One of a set of tools we're offering as a way to say thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Regex to filter only IP's? 4 69
extracting data from a variable regular expression 2 46
How come this regular expression allows "e"? 14 67
Perl script to process a .csv file 18 84
I've just discovered very important differences between Windows an Unix formats in Perl,at least 5.xx.. MOST IMPORTANT: Use Unix file format while saving Your script. otherwise it will have ^M s or smth likely weird in the EOL, Then DO NOT use m…
There are many situations when we need to display the data in sorted order. For example: Student details by name or by rank or by total marks etc. If you are working on data driven based projects then you will use sorting techniques very frequently.…
Learn how to match and substitute tagged data using PHP regular expressions. Demonstrated on Windows 7, but also applies to other operating systems. Demonstrated technique applies to PHP (all versions) and Firefox, but very similar techniques will w…

734 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question