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String::Ediff(3)      User Contributed Perl Documentation     String::Ediff(3)

NAME
       String::Ediff - Produce common sub-string indices for two strings

SYNOPSIS
	 use String::Ediff;
	 my $s1	= "hello world";
	 my $s2	= "hxello worlyd";

	 my $indices = String::Ediff::ediff($s1, $s2);
	 print $indices, "\n"; #1 10 0 0 2 11 0	0

	 #			     0	       1	 2	  0	    1	      2
	 #			     01234567890123456789012345	  012345678901234567890123
	 print String::Ediff::ediff("hello world a hello world", "hxello worlyd	xyz hello");
	 # 1 10	0 0 2 11 0 0 13	20 0 0 17 23 0 0

DESCRIPTION
       This module uses	suffix tree algorithm to determine the common
       substrings.

   ediff()
	 $common_sub_string_indices = ediff($s1, $s2);

       The ediff method	takes two strings and returns the common sub-string
       indices between the two strings.	 The returned indices consists of
       records separated by a space.  Each record, representing	one common
       sub-string, consists of 8 numbers in the	following format:

	 bc1 ec1 bl1 el1 bc2 ec2 bl2 el2

       bc1 - begin char	in s1

       ec1 - end char in s1

       bl1 - begin line	in s1

       el1 - end line in s1

       bc2 - begin char	in s2

       ec2 - end char in s2

       bl2 - begin line	in s2

       el2 - end line in s2

LIMITATIONS
	 1. white spaces are ignored.
	 2. because of white spaces are	ignored, the end char index of a previous
	    record and the begin char index of a next record might overlap.
	 3. the	interval is right open-ended, i.e. [1, 4) means	char 1,	2, and 3
	    are	in the common string.  char 4 is not.
	 4. only sub-string with size >= 4 are recorded.

AUTHOR
       Bo Zou, boxzou@yahoo.com

COPYRIGHT AND LICENCE
       Copyright (C) 2003-2005 Bo Zou

       This library is free software; you can redistribute it and/or modify it
       under the same terms as Perl itself.

perl v5.32.1			  2007-05-05		      String::Ediff(3)

NAME | SYNOPSIS | DESCRIPTION | LIMITATIONS | AUTHOR | COPYRIGHT AND LICENCE

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