txt 2 re
knowing is obsolete :: regular expression generator (perl php python java javascript coldfusion c c++ ruby vb vbscript j# c# c++.net vb.net)
 
 
 
Enter the string that you want to use a regular expression on:
1
   
 
Select the elements that you want to extract to run regular expression generator:
2
4
c 4
d4
2
c 
d2
day2
int42
_
c _
ws
4
c 4
d4
3
c 3
d3
day3
int
< Source String
What to click?  extract any integer in this position
extract this integer (2006) in this position
 
3C++ regular expression program that extracts the selected elements from the entered string:
Perl PHP Python Java Javascript ColdFusion C [C++] Ruby VB VBScript J#.net C#.net C++.net VB.net 
 
// URL that generated this code:
// http://txt2re.com/index-c++.php3?s=42%2043&2&11&5

#include <stdlib.h>
#include <string>
#include <iostream>
#include <pme.h>

int main()
{
  std::string txt="42 43";

  std::string re1=".*?";	// Non-greedy match on filler
  std::string re2=".";	// Uninteresting: c
  std::string re3="(.)";	// Any Single Character 1
  std::string re4="(\\s+)";	// White Space 1
  std::string re5="(\\d+)";	// Integer Number 1

  PME re(re1+re2+re3+re4+re5,"gims");
  int n;
  if ((n=re.match(txt))>0)
  {
      std::string c1=re[1].c_str();
      std::string ws1=re[2].c_str();
      std::string int1=re[3].c_str();
      std::cout << "("<<c1<<")"<<"("<<ws1<<")"<<"("<<int1<<")"<< std::endl;
  }
}

//-----
// C++ does not provide a regular expression feature as standard.
//
// To run this code you will need to first download and install
// the PCRE library from http://www.pcre.org/ and 
// the PME library from ftp://ftp.csx.cam.ac.uk/pub/software/programming/pcre/Contrib/
// 
// Note that on Linux systems PCRE is often already installed in /usr/lib/libpcre* or /usr/local/lib/libpcre*. 
//
// Compile and run on Unix using 
// # c++ x.cpp -lpme -lpcre 
// # ./a.out
// 
 
 
 
 
Feedback
:: in the example "14:18:30 and 13 rooms" the num 13 room doesnt becomes int '13' because of time has hour hh greater than 12 . can some one helpTue, 21 Oct 2014 02:52AM
:: this site has saved me so much time for years, i'd be in trouble if it ever went away, thank youTue, 21 Oct 2014 06:45PM
:: Very useful. Would it also be possible to support regexes for (1) unix/linux utilities sed and grep and (2) Visual studio regexes?Tue, 21 Oct 2014 09:18PM
:: Feature request: Allow user to supply a list of strings, and for txt2re to generate a single regex that would match them all. Thanks,Tue, 21 Oct 2014 09:22PM
:: Feature request: Allow user to supply a list of strings, and for txt2re to generate a single regex that would match them all. Thanks,Tue, 21 Oct 2014 09:28PM
Jamie:: Thank you! Great tool. I forgot even the basics of regex and this tool helped me out.Wed, 22 Oct 2014 03:03PM
Anon:: Fucking awesome.Wed, 22 Oct 2014 04:48PM
rafay:: Thankyou, saved alot of my time, excellent tool!Fri, 24 Oct 2014 03:56PM
anon:: It was unreasonable of me to think it'd be able to handle a 11k line 3D array...Sun, 26 Oct 2014 10:11PM
5566:: goodTue, 28 Oct 2014 09:07AM
ninja:: GREAT TOOL! THANK YOU!Tue, 28 Oct 2014 01:55PM
jesus:: Thx. It's a miracle function.Wed, 29 Oct 2014 01:16AM
jadeon:: what a nice program!Wed, 29 Oct 2014 05:08AM
:: Very nice...!Wed, 29 Oct 2014 11:07AM
:: LulzThu, 30 Oct 2014 08:23AM
:: Yay!Thu, 30 Oct 2014 08:23AM
:: Excellent toolThu, 30 Oct 2014 08:31AM
:: Very nice...!Thu, 30 Oct 2014 09:29AM
Ozair:: Nice working (Y)Thu, 30 Oct 2014 05:16PM
:: I would like to see a feature to give a generic regex expression instead of a whole script. I also second the request to submit a list of strings and return a single regex to match them all.Mon, 3 Nov 2014 08:24PM
:: Amazing!Tue, 4 Nov 2014 01:15AM
:: cool!Tue, 4 Nov 2014 01:06PM
:: This will come in handy.Fri, 7 Nov 2014 02:25PM
anon:: I second the feature request for a generic regex rather than a whole script. As great as it is having the whole script there, just the regex would be ideal sometimes.Fri, 7 Nov 2014 04:03PM
Jason:: Love to see what people have already suggested/requested: unix/linux utilities sed and grepFri, 7 Nov 2014 09:23PM
Larry:: Thank youMon, 10 Nov 2014 09:05PM
Sporri:: Awesome tool! Thank you.Tue, 11 Nov 2014 11:50AM
K Neeraj Lal:: Awesome tool!!!Wed, 12 Nov 2014 08:21AM
:: gud oneWed, 12 Nov 2014 11:41AM
Anon:: Great tool! Thank YouThu, 13 Nov 2014 09:55PM
Anon:: what about repeating structures? like 4%,6%,8%,9%,...,n% for which the regex is ^\d+%(?:,\d+%)+$Fri, 14 Nov 2014 01:42PM
:: ah ah ah ah Fri, 14 Nov 2014 05:21PM
timtjtim:: Wow! Saved so much time!Fri, 14 Nov 2014 09:25PM
anon:: Dang!!!Sun, 16 Nov 2014 04:21PM
Alicia:: Amazing tool, just what i was looking for!Sun, 16 Nov 2014 11:22PM
:: LOVE U DUDE! Mon, 17 Nov 2014 09:42AM
:: First LastTue, 18 Nov 2014 03:29PM
taht:: si loocThu, 20 Nov 2014 10:54AM
Thanks A Million:: This works great. I used extract function to replace the txt variable. Works like a charm. Thanks LawrenceThu, 20 Nov 2014 10:01PM
venk13:: In-f*cking-sane!Fri, 21 Nov 2014 10:18AM
Eased my work:: very very very good tool. very userfullSat, 22 Nov 2014 10:22PM
Ashesh:: Awesome!Sun, 23 Nov 2014 03:32AM
Tiny:: this is a good toolSun, 23 Nov 2014 05:13PM
KARL:: I AM KARL! KING OF DUCKS!Mon, 24 Nov 2014 01:42PM
 
  home     faq              ©2006 mark james ennis