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 2
d2
day2
int
_
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&1

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

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

  std::string re1="(\\d+)";	// Integer Number 1
  std::string re2="(2)";	// Any Single Character 1
  std::string re3=".*?";	// Non-greedy match on filler
  std::string re4="(\\d+)";	// Integer Number 2

  PME re(re1+re2+re3+re4,"gims");
  int n;
  if ((n=re.match(txt))>0)
  {
      std::string int1=re[1].c_str();
      std::string c1=re[2].c_str();
      std::string int2=re[3].c_str();
      std::cout << "("<<int1<<")"<<"("<<c1<<")"<<"("<<int2<<")"<< 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
:: wowFri, 13 Feb 2015 01:40AM
::  Tue, 17 Feb 2015 10:43AM
::  Tue, 17 Feb 2015 02:29PM
Nav23:: Thank youTue, 17 Feb 2015 10:16PM
developer:: Simply brilliant! Regex generated in less than 2 minutes... :-) THANK YOU!!!!Wed, 18 Feb 2015 10:14AM
::  Thu, 19 Feb 2015 10:37AM
::  Thu, 19 Feb 2015 01:15PM
::  Thu, 19 Feb 2015 01:15PM
bobbyjo:: The best regular expression builder there is!Thu, 19 Feb 2015 11:48PM
::  Fri, 20 Feb 2015 02:06AM
:: could you plz tell me the step by step process that how to use txt2re?Fri, 20 Feb 2015 11:07AM
:: ddFri, 20 Feb 2015 12:31PM
:: lelFri, 20 Feb 2015 12:31PM
Андрей Викторович::  Sun, 22 Feb 2015 05:32PM
gkxhel:: ffChShZJjJMon, 23 Feb 2015 07:36AM
sanae:: A great toolMon, 23 Feb 2015 02:13PM
alert(/a/):: alert(/a/)Mon, 23 Feb 2015 02:14PM
::  Mon, 23 Feb 2015 02:15PM
::  Mon, 23 Feb 2015 02:15PM
::  Mon, 23 Feb 2015 06:53PM
tako:: I literally have no idea how the fuck to use your toolMon, 23 Feb 2015 08:02PM
silphium:: Verry cool!Tue, 24 Feb 2015 05:59AM
Raviraj:: NiceeeeeeeeeeeeeeeeeeTue, 24 Feb 2015 10:00AM
:: You deserve a medal!Wed, 25 Feb 2015 12:19PM
jared::  Wed, 25 Feb 2015 02:30PM
::  Wed, 25 Feb 2015 04:48PM
::  Wed, 25 Feb 2015 09:19PM
:: WTB setting for grep regex with or without -P and lookbehind + lookaheadThu, 26 Feb 2015 03:10PM
::  Thu, 26 Feb 2015 11:59PM
j2:: This is some good work, You must be a wiz or an insomniacThu, 26 Feb 2015 11:59PM
colin:: Thank you so much, worked perfectly!Fri, 27 Feb 2015 12:17AM
::  Fri, 27 Feb 2015 01:17AM
Add Experiment:: blah blah balghFri, 27 Feb 2015 07:56AM
::  Fri, 27 Feb 2015 03:30PM
pro:: thank you for this awesom serviceFri, 27 Feb 2015 06:08PM
Arun:: This is beyond awesome... Done my work in 2 mins...Fri, 27 Feb 2015 10:31PM
::  Sat, 28 Feb 2015 02:56AM
123:: 123Sat, 28 Feb 2015 10:40AM
::  Sun, 1 Mar 2015 03:41AM
:: NiceSun, 1 Mar 2015 08:17AM
::  Mon, 2 Mar 2015 07:44AM
::  Mon, 2 Mar 2015 08:46AM
::  Mon, 2 Mar 2015 01:00PM
:: How to work with conditional regular expressions?Mon, 2 Mar 2015 09:13PM
 
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