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some diff engine updates (only minor, but will hopefully not break anything)
git-svn-id: file:///svn/phpbb/branches/phpBB-3_0_0@8692 89ea8834-ac86-4346-8a33-228a782c2dd0
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@@ -17,21 +17,20 @@ if (!defined('IN_PHPBB'))
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}
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/**
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* Code from pear.php.net, Text_Diff-0.2.1 (beta) package
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* http://pear.php.net/package/Text_Diff/
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* Code from pear.php.net, Text_Diff-1.0.0 package
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* http://pear.php.net/package/Text_Diff/ (native engine)
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*
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* Modified by phpBB Group to meet our coding standards
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* and being able to integrate into phpBB
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*
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* Class used internally by Diff to actually compute the diffs. This class is
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* implemented using native PHP code.
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* Class used internally by Text_Diff to actually compute the diffs. This
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* class is implemented using native PHP code.
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*
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* The algorithm used here is mostly lifted from the perl module
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* Algorithm::Diff (version 1.06) by Ned Konz, which is available at:
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* http://www.perl.com/CPAN/authors/id/N/NE/NEDKONZ/Algorithm-Diff-1.06.zip
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*
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* More ideas are taken from:
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* http://www.ics.uci.edu/~eppstein/161/960229.html
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* More ideas are taken from: http://www.ics.uci.edu/~eppstein/161/960229.html
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*
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* Some ideas (and a bit of code) are taken from analyze.c, of GNU
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* diffutils-2.7, which can be found at:
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@@ -41,6 +40,8 @@ if (!defined('IN_PHPBB'))
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* Geoffrey T. Dairiki <dairiki@dairiki.org>. The original PHP version of this
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* code was written by him, and is used/adapted with his permission.
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*
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* Copyright 2004-2008 The Horde Project (http://www.horde.org/)
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*
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* @author Geoffrey T. Dairiki <dairiki@dairiki.org>
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* @package diff
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*
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@@ -251,7 +252,7 @@ class diff_engine
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}
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}
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$x1 = $xoff + (int)(($numer + ($xlim-$xoff)*$chunk) / $nchunks);
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$x1 = $xoff + (int)(($numer + ($xlim - $xoff) * $chunk) / $nchunks);
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for (; $x < $x1; $x++)
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{
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@@ -262,7 +263,8 @@ class diff_engine
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}
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$matches = $ymatches[$line];
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foreach ($matches as $y)
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reset($matches);
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while (list(, $y) = each($matches))
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{
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if (empty($this->in_seq[$y]))
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{
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@@ -273,7 +275,7 @@ class diff_engine
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}
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// no reset() here
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while (list($junk, $y) = each($matches))
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while (list(, $y) = each($matches))
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{
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if ($y > $this->seq[$k - 1])
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{
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