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1152
msd2/phpBB3/includes/diff/diff.php
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1152
msd2/phpBB3/includes/diff/diff.php
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File diff suppressed because it is too large
Load Diff
555
msd2/phpBB3/includes/diff/engine.php
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555
msd2/phpBB3/includes/diff/engine.php
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@ -0,0 +1,555 @@
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<?php
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||||
/**
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||||
*
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||||
* This file is part of the phpBB Forum Software package.
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||||
*
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||||
* @copyright (c) phpBB Limited <https://www.phpbb.com>
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||||
* @license GNU General Public License, version 2 (GPL-2.0)
|
||||
*
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||||
* For full copyright and license information, please see
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* the docs/CREDITS.txt file.
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||||
*
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||||
*/
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||||
|
||||
/**
|
||||
* @ignore
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||||
*/
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||||
if (!defined('IN_PHPBB'))
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||||
{
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||||
exit;
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||||
}
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||||
|
||||
/**
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||||
* Code from pear.php.net, Text_Diff-1.1.0 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 Limited 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 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: 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
|
||||
* diffutils-2.7, which can be found at:
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* ftp://gnudist.gnu.org/pub/gnu/diffutils/diffutils-2.7.tar.gz
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||||
*
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||||
* Some ideas (subdivision by NCHUNKS > 2, and some optimizations) are from
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||||
* Geoffrey T. Dairiki <dairiki@dairiki.org>. The original PHP version of this
|
||||
* 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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* @access private
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*/
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class diff_engine
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{
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/**
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* If set to true we trim all lines before we compare them. This ensures that sole space/tab changes do not trigger diffs.
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*/
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var $skip_whitespace_changes = true;
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function diff(&$from_lines, &$to_lines, $preserve_cr = true)
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{
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// Remove empty lines...
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// If preserve_cr is true, we basically only change \r\n and bare \r to \n to get the same carriage returns for both files
|
||||
// If it is false, we try to only use \n once per line and ommit all empty lines to be able to get a proper data diff
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||||
|
||||
if (is_array($from_lines))
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||||
{
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||||
$from_lines = implode("\n", $from_lines);
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||||
}
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||||
|
||||
if (is_array($to_lines))
|
||||
{
|
||||
$to_lines = implode("\n", $to_lines);
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||||
}
|
||||
|
||||
if ($preserve_cr)
|
||||
{
|
||||
$from_lines = explode("\n", str_replace("\r", "\n", str_replace("\r\n", "\n", $from_lines)));
|
||||
$to_lines = explode("\n", str_replace("\r", "\n", str_replace("\r\n", "\n", $to_lines)));
|
||||
}
|
||||
else
|
||||
{
|
||||
$from_lines = explode("\n", preg_replace('#[\n\r]+#', "\n", $from_lines));
|
||||
$to_lines = explode("\n", preg_replace('#[\n\r]+#', "\n", $to_lines));
|
||||
}
|
||||
|
||||
$n_from = count($from_lines);
|
||||
$n_to = count($to_lines);
|
||||
|
||||
$this->xchanged = $this->ychanged = $this->xv = $this->yv = $this->xind = $this->yind = array();
|
||||
unset($this->seq, $this->in_seq, $this->lcs);
|
||||
|
||||
// Skip leading common lines.
|
||||
for ($skip = 0; $skip < $n_from && $skip < $n_to; $skip++)
|
||||
{
|
||||
if (trim($from_lines[$skip]) !== trim($to_lines[$skip]))
|
||||
{
|
||||
break;
|
||||
}
|
||||
$this->xchanged[$skip] = $this->ychanged[$skip] = false;
|
||||
}
|
||||
|
||||
// Skip trailing common lines.
|
||||
$xi = $n_from;
|
||||
$yi = $n_to;
|
||||
|
||||
for ($endskip = 0; --$xi > $skip && --$yi > $skip; $endskip++)
|
||||
{
|
||||
if (trim($from_lines[$xi]) !== trim($to_lines[$yi]))
|
||||
{
|
||||
break;
|
||||
}
|
||||
$this->xchanged[$xi] = $this->ychanged[$yi] = false;
|
||||
}
|
||||
|
||||
// Ignore lines which do not exist in both files.
|
||||
for ($xi = $skip; $xi < $n_from - $endskip; $xi++)
|
||||
{
|
||||
if ($this->skip_whitespace_changes) $xhash[trim($from_lines[$xi])] = 1; else $xhash[$from_lines[$xi]] = 1;
|
||||
}
|
||||
|
||||
for ($yi = $skip; $yi < $n_to - $endskip; $yi++)
|
||||
{
|
||||
$line = ($this->skip_whitespace_changes) ? trim($to_lines[$yi]) : $to_lines[$yi];
|
||||
|
||||
if (($this->ychanged[$yi] = empty($xhash[$line])))
|
||||
{
|
||||
continue;
|
||||
}
|
||||
$yhash[$line] = 1;
|
||||
$this->yv[] = $line;
|
||||
$this->yind[] = $yi;
|
||||
}
|
||||
|
||||
for ($xi = $skip; $xi < $n_from - $endskip; $xi++)
|
||||
{
|
||||
$line = ($this->skip_whitespace_changes) ? trim($from_lines[$xi]) : $from_lines[$xi];
|
||||
|
||||
if (($this->xchanged[$xi] = empty($yhash[$line])))
|
||||
{
|
||||
continue;
|
||||
}
|
||||
$this->xv[] = $line;
|
||||
$this->xind[] = $xi;
|
||||
}
|
||||
|
||||
// Find the LCS.
|
||||
$this->_compareseq(0, count($this->xv), 0, count($this->yv));
|
||||
|
||||
// Merge edits when possible.
|
||||
if ($this->skip_whitespace_changes)
|
||||
{
|
||||
$from_lines_clean = array_map('trim', $from_lines);
|
||||
$to_lines_clean = array_map('trim', $to_lines);
|
||||
|
||||
$this->_shift_boundaries($from_lines_clean, $this->xchanged, $this->ychanged);
|
||||
$this->_shift_boundaries($to_lines_clean, $this->ychanged, $this->xchanged);
|
||||
|
||||
unset($from_lines_clean, $to_lines_clean);
|
||||
}
|
||||
else
|
||||
{
|
||||
$this->_shift_boundaries($from_lines, $this->xchanged, $this->ychanged);
|
||||
$this->_shift_boundaries($to_lines, $this->ychanged, $this->xchanged);
|
||||
}
|
||||
|
||||
// Compute the edit operations.
|
||||
$edits = array();
|
||||
$xi = $yi = 0;
|
||||
|
||||
while ($xi < $n_from || $yi < $n_to)
|
||||
{
|
||||
// Skip matching "snake".
|
||||
$copy = array();
|
||||
|
||||
while ($xi < $n_from && $yi < $n_to && !$this->xchanged[$xi] && !$this->ychanged[$yi])
|
||||
{
|
||||
$copy[] = $from_lines[$xi++];
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||||
$yi++;
|
||||
}
|
||||
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||||
if ($copy)
|
||||
{
|
||||
$edits[] = new diff_op_copy($copy);
|
||||
}
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||||
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||||
// Find deletes & adds.
|
||||
$delete = array();
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||||
while ($xi < $n_from && $this->xchanged[$xi])
|
||||
{
|
||||
$delete[] = $from_lines[$xi++];
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||||
}
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||||
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||||
$add = array();
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||||
while ($yi < $n_to && $this->ychanged[$yi])
|
||||
{
|
||||
$add[] = $to_lines[$yi++];
|
||||
}
|
||||
|
||||
if ($delete && $add)
|
||||
{
|
||||
$edits[] = new diff_op_change($delete, $add);
|
||||
}
|
||||
else if ($delete)
|
||||
{
|
||||
$edits[] = new diff_op_delete($delete);
|
||||
}
|
||||
else if ($add)
|
||||
{
|
||||
$edits[] = new diff_op_add($add);
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||||
}
|
||||
}
|
||||
|
||||
return $edits;
|
||||
}
|
||||
|
||||
/**
|
||||
* Divides the Largest Common Subsequence (LCS) of the sequences (XOFF,
|
||||
* XLIM) and (YOFF, YLIM) into NCHUNKS approximately equally sized segments.
|
||||
*
|
||||
* Returns (LCS, PTS). LCS is the length of the LCS. PTS is an array of
|
||||
* NCHUNKS+1 (X, Y) indexes giving the diving points between sub
|
||||
* sequences. The first sub-sequence is contained in (X0, X1), (Y0, Y1),
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||||
* the second in (X1, X2), (Y1, Y2) and so on. Note that (X0, Y0) ==
|
||||
* (XOFF, YOFF) and (X[NCHUNKS], Y[NCHUNKS]) == (XLIM, YLIM).
|
||||
*
|
||||
* This function assumes that the first lines of the specified portions of
|
||||
* the two files do not match, and likewise that the last lines do not
|
||||
* match. The caller must trim matching lines from the beginning and end
|
||||
* of the portions it is going to specify.
|
||||
*/
|
||||
function _diag($xoff, $xlim, $yoff, $ylim, $nchunks)
|
||||
{
|
||||
$flip = false;
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||||
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||||
if ($xlim - $xoff > $ylim - $yoff)
|
||||
{
|
||||
// Things seems faster (I'm not sure I understand why) when the shortest sequence is in X.
|
||||
$flip = true;
|
||||
list($xoff, $xlim, $yoff, $ylim) = array($yoff, $ylim, $xoff, $xlim);
|
||||
}
|
||||
|
||||
if ($flip)
|
||||
{
|
||||
for ($i = $ylim - 1; $i >= $yoff; $i--)
|
||||
{
|
||||
$ymatches[$this->xv[$i]][] = $i;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
for ($i = $ylim - 1; $i >= $yoff; $i--)
|
||||
{
|
||||
$ymatches[$this->yv[$i]][] = $i;
|
||||
}
|
||||
}
|
||||
|
||||
$this->lcs = 0;
|
||||
$this->seq[0]= $yoff - 1;
|
||||
$this->in_seq = array();
|
||||
$ymids[0] = array();
|
||||
|
||||
$numer = $xlim - $xoff + $nchunks - 1;
|
||||
$x = $xoff;
|
||||
|
||||
for ($chunk = 0; $chunk < $nchunks; $chunk++)
|
||||
{
|
||||
if ($chunk > 0)
|
||||
{
|
||||
for ($i = 0; $i <= $this->lcs; $i++)
|
||||
{
|
||||
$ymids[$i][$chunk - 1] = $this->seq[$i];
|
||||
}
|
||||
}
|
||||
|
||||
$x1 = $xoff + (int)(($numer + ($xlim - $xoff) * $chunk) / $nchunks);
|
||||
|
||||
for (; $x < $x1; $x++)
|
||||
{
|
||||
$line = $flip ? $this->yv[$x] : $this->xv[$x];
|
||||
if (empty($ymatches[$line]))
|
||||
{
|
||||
continue;
|
||||
}
|
||||
$matches = $ymatches[$line];
|
||||
|
||||
reset($matches);
|
||||
while (list(, $y) = each($matches))
|
||||
{
|
||||
if (empty($this->in_seq[$y]))
|
||||
{
|
||||
$k = $this->_lcs_pos($y);
|
||||
$ymids[$k] = $ymids[$k - 1];
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
// no reset() here
|
||||
while (list(, $y) = each($matches))
|
||||
{
|
||||
if ($y > $this->seq[$k - 1])
|
||||
{
|
||||
// Optimization: this is a common case: next match is just replacing previous match.
|
||||
$this->in_seq[$this->seq[$k]] = false;
|
||||
$this->seq[$k] = $y;
|
||||
$this->in_seq[$y] = 1;
|
||||
}
|
||||
else if (empty($this->in_seq[$y]))
|
||||
{
|
||||
$k = $this->_lcs_pos($y);
|
||||
$ymids[$k] = $ymids[$k - 1];
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
$seps[] = $flip ? array($yoff, $xoff) : array($xoff, $yoff);
|
||||
$ymid = $ymids[$this->lcs];
|
||||
|
||||
for ($n = 0; $n < $nchunks - 1; $n++)
|
||||
{
|
||||
$x1 = $xoff + (int)(($numer + ($xlim - $xoff) * $n) / $nchunks);
|
||||
$y1 = $ymid[$n] + 1;
|
||||
$seps[] = $flip ? array($y1, $x1) : array($x1, $y1);
|
||||
}
|
||||
$seps[] = $flip ? array($ylim, $xlim) : array($xlim, $ylim);
|
||||
|
||||
return array($this->lcs, $seps);
|
||||
}
|
||||
|
||||
function _lcs_pos($ypos)
|
||||
{
|
||||
$end = $this->lcs;
|
||||
|
||||
if ($end == 0 || $ypos > $this->seq[$end])
|
||||
{
|
||||
$this->seq[++$this->lcs] = $ypos;
|
||||
$this->in_seq[$ypos] = 1;
|
||||
return $this->lcs;
|
||||
}
|
||||
|
||||
$beg = 1;
|
||||
while ($beg < $end)
|
||||
{
|
||||
$mid = (int)(($beg + $end) / 2);
|
||||
if ($ypos > $this->seq[$mid])
|
||||
{
|
||||
$beg = $mid + 1;
|
||||
}
|
||||
else
|
||||
{
|
||||
$end = $mid;
|
||||
}
|
||||
}
|
||||
|
||||
$this->in_seq[$this->seq[$end]] = false;
|
||||
$this->seq[$end] = $ypos;
|
||||
$this->in_seq[$ypos] = 1;
|
||||
|
||||
return $end;
|
||||
}
|
||||
|
||||
/**
|
||||
* Finds LCS of two sequences.
|
||||
*
|
||||
* The results are recorded in the vectors $this->{x,y}changed[], by
|
||||
* storing a 1 in the element for each line that is an insertion or
|
||||
* deletion (ie. is not in the LCS).
|
||||
*
|
||||
* The subsequence of file 0 is (XOFF, XLIM) and likewise for file 1.
|
||||
*
|
||||
* Note that XLIM, YLIM are exclusive bounds. All line numbers are
|
||||
* origin-0 and discarded lines are not counted.
|
||||
*/
|
||||
function _compareseq($xoff, $xlim, $yoff, $ylim)
|
||||
{
|
||||
// Slide down the bottom initial diagonal.
|
||||
while ($xoff < $xlim && $yoff < $ylim && $this->xv[$xoff] == $this->yv[$yoff])
|
||||
{
|
||||
++$xoff;
|
||||
++$yoff;
|
||||
}
|
||||
|
||||
// Slide up the top initial diagonal.
|
||||
while ($xlim > $xoff && $ylim > $yoff && $this->xv[$xlim - 1] == $this->yv[$ylim - 1])
|
||||
{
|
||||
--$xlim;
|
||||
--$ylim;
|
||||
}
|
||||
|
||||
if ($xoff == $xlim || $yoff == $ylim)
|
||||
{
|
||||
$lcs = 0;
|
||||
}
|
||||
else
|
||||
{
|
||||
// This is ad hoc but seems to work well.
|
||||
// $nchunks = sqrt(min($xlim - $xoff, $ylim - $yoff) / 2.5);
|
||||
// $nchunks = max(2,min(8,(int)$nchunks));
|
||||
$nchunks = min(7, $xlim - $xoff, $ylim - $yoff) + 1;
|
||||
list($lcs, $seps) = $this->_diag($xoff, $xlim, $yoff, $ylim, $nchunks);
|
||||
}
|
||||
|
||||
if ($lcs == 0)
|
||||
{
|
||||
// X and Y sequences have no common subsequence: mark all changed.
|
||||
while ($yoff < $ylim)
|
||||
{
|
||||
$this->ychanged[$this->yind[$yoff++]] = 1;
|
||||
}
|
||||
|
||||
while ($xoff < $xlim)
|
||||
{
|
||||
$this->xchanged[$this->xind[$xoff++]] = 1;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
// Use the partitions to split this problem into subproblems.
|
||||
reset($seps);
|
||||
$pt1 = $seps[0];
|
||||
|
||||
while ($pt2 = next($seps))
|
||||
{
|
||||
$this->_compareseq($pt1[0], $pt2[0], $pt1[1], $pt2[1]);
|
||||
$pt1 = $pt2;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Adjusts inserts/deletes of identical lines to join changes as much as possible.
|
||||
*
|
||||
* We do something when a run of changed lines include a line at one end
|
||||
* and has an excluded, identical line at the other. We are free to
|
||||
* choose which identical line is included. 'compareseq' usually chooses
|
||||
* the one at the beginning, but usually it is cleaner to consider the
|
||||
* following identical line to be the "change".
|
||||
*
|
||||
* This is extracted verbatim from analyze.c (GNU diffutils-2.7).
|
||||
*/
|
||||
function _shift_boundaries($lines, &$changed, $other_changed)
|
||||
{
|
||||
$i = 0;
|
||||
$j = 0;
|
||||
|
||||
$len = count($lines);
|
||||
$other_len = count($other_changed);
|
||||
|
||||
while (1)
|
||||
{
|
||||
// Scan forward to find the beginning of another run of
|
||||
// changes. Also keep track of the corresponding point in the other file.
|
||||
//
|
||||
// Throughout this code, $i and $j are adjusted together so that
|
||||
// the first $i elements of $changed and the first $j elements of
|
||||
// $other_changed both contain the same number of zeros (unchanged lines).
|
||||
//
|
||||
// Furthermore, $j is always kept so that $j == $other_len or $other_changed[$j] == false.
|
||||
while ($j < $other_len && $other_changed[$j])
|
||||
{
|
||||
$j++;
|
||||
}
|
||||
|
||||
while ($i < $len && ! $changed[$i])
|
||||
{
|
||||
$i++;
|
||||
$j++;
|
||||
|
||||
while ($j < $other_len && $other_changed[$j])
|
||||
{
|
||||
$j++;
|
||||
}
|
||||
}
|
||||
|
||||
if ($i == $len)
|
||||
{
|
||||
break;
|
||||
}
|
||||
|
||||
$start = $i;
|
||||
|
||||
// Find the end of this run of changes.
|
||||
while (++$i < $len && $changed[$i])
|
||||
{
|
||||
continue;
|
||||
}
|
||||
|
||||
do
|
||||
{
|
||||
// Record the length of this run of changes, so that we can later determine whether the run has grown.
|
||||
$runlength = $i - $start;
|
||||
|
||||
// Move the changed region back, so long as the previous unchanged line matches the last changed one.
|
||||
// This merges with previous changed regions.
|
||||
while ($start > 0 && $lines[$start - 1] == $lines[$i - 1])
|
||||
{
|
||||
$changed[--$start] = 1;
|
||||
$changed[--$i] = false;
|
||||
|
||||
while ($start > 0 && $changed[$start - 1])
|
||||
{
|
||||
$start--;
|
||||
}
|
||||
|
||||
while ($other_changed[--$j])
|
||||
{
|
||||
continue;
|
||||
}
|
||||
}
|
||||
|
||||
// Set CORRESPONDING to the end of the changed run, at the last point where it corresponds to a changed run in the
|
||||
// other file. CORRESPONDING == LEN means no such point has been found.
|
||||
$corresponding = $j < $other_len ? $i : $len;
|
||||
|
||||
// Move the changed region forward, so long as the first changed line matches the following unchanged one.
|
||||
// This merges with following changed regions.
|
||||
// Do this second, so that if there are no merges, the changed region is moved forward as far as possible.
|
||||
while ($i < $len && $lines[$start] == $lines[$i])
|
||||
{
|
||||
$changed[$start++] = false;
|
||||
$changed[$i++] = 1;
|
||||
|
||||
while ($i < $len && $changed[$i])
|
||||
{
|
||||
$i++;
|
||||
}
|
||||
|
||||
$j++;
|
||||
if ($j < $other_len && $other_changed[$j])
|
||||
{
|
||||
$corresponding = $i;
|
||||
while ($j < $other_len && $other_changed[$j])
|
||||
{
|
||||
$j++;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
while ($runlength != $i - $start);
|
||||
|
||||
// If possible, move the fully-merged run of changes back to a corresponding run in the other file.
|
||||
while ($corresponding < $i)
|
||||
{
|
||||
$changed[--$start] = 1;
|
||||
$changed[--$i] = 0;
|
||||
|
||||
while ($other_changed[--$j])
|
||||
{
|
||||
continue;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
861
msd2/phpBB3/includes/diff/renderer.php
Normal file
861
msd2/phpBB3/includes/diff/renderer.php
Normal file
@ -0,0 +1,861 @@
|
||||
<?php
|
||||
/**
|
||||
*
|
||||
* This file is part of the phpBB Forum Software package.
|
||||
*
|
||||
* @copyright (c) phpBB Limited <https://www.phpbb.com>
|
||||
* @license GNU General Public License, version 2 (GPL-2.0)
|
||||
*
|
||||
* For full copyright and license information, please see
|
||||
* the docs/CREDITS.txt file.
|
||||
*
|
||||
*/
|
||||
|
||||
/**
|
||||
* @ignore
|
||||
*/
|
||||
if (!defined('IN_PHPBB'))
|
||||
{
|
||||
exit;
|
||||
}
|
||||
|
||||
/**
|
||||
* Code from pear.php.net, Text_Diff-1.1.0 package
|
||||
* http://pear.php.net/package/Text_Diff/
|
||||
*
|
||||
* Modified by phpBB Limited to meet our coding standards
|
||||
* and being able to integrate into phpBB
|
||||
*
|
||||
* A class to render Diffs in different formats.
|
||||
*
|
||||
* This class renders the diff in classic diff format. It is intended that
|
||||
* this class be customized via inheritance, to obtain fancier outputs.
|
||||
*
|
||||
* Copyright 2004-2008 The Horde Project (http://www.horde.org/)
|
||||
*
|
||||
* @package diff
|
||||
*/
|
||||
class diff_renderer
|
||||
{
|
||||
/**
|
||||
* Number of leading context "lines" to preserve.
|
||||
*
|
||||
* This should be left at zero for this class, but subclasses may want to
|
||||
* set this to other values.
|
||||
*/
|
||||
var $_leading_context_lines = 0;
|
||||
|
||||
/**
|
||||
* Number of trailing context "lines" to preserve.
|
||||
*
|
||||
* This should be left at zero for this class, but subclasses may want to
|
||||
* set this to other values.
|
||||
*/
|
||||
var $_trailing_context_lines = 0;
|
||||
|
||||
/**
|
||||
* Constructor.
|
||||
*/
|
||||
function __construct($params = array())
|
||||
{
|
||||
foreach ($params as $param => $value)
|
||||
{
|
||||
$v = '_' . $param;
|
||||
if (isset($this->$v))
|
||||
{
|
||||
$this->$v = $value;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Get any renderer parameters.
|
||||
*
|
||||
* @return array All parameters of this renderer object.
|
||||
*/
|
||||
function get_params()
|
||||
{
|
||||
$params = array();
|
||||
foreach (get_object_vars($this) as $k => $v)
|
||||
{
|
||||
if ($k[0] == '_')
|
||||
{
|
||||
$params[substr($k, 1)] = $v;
|
||||
}
|
||||
}
|
||||
|
||||
return $params;
|
||||
}
|
||||
|
||||
/**
|
||||
* Renders a diff.
|
||||
*
|
||||
* @param diff &$diff A diff object.
|
||||
*
|
||||
* @return string The formatted output.
|
||||
*/
|
||||
function render(&$diff)
|
||||
{
|
||||
$xi = $yi = 1;
|
||||
$block = false;
|
||||
$context = array();
|
||||
|
||||
// Create a new diff object if it is a 3-way diff
|
||||
if (is_a($diff, 'diff3'))
|
||||
{
|
||||
$diff3 = &$diff;
|
||||
|
||||
$diff_1 = $diff3->get_original();
|
||||
$diff_2 = $diff3->merged_output();
|
||||
|
||||
unset($diff3);
|
||||
|
||||
$diff = new diff($diff_1, $diff_2);
|
||||
}
|
||||
|
||||
$nlead = $this->_leading_context_lines;
|
||||
$ntrail = $this->_trailing_context_lines;
|
||||
|
||||
$output = $this->_start_diff();
|
||||
$diffs = $diff->get_diff();
|
||||
|
||||
foreach ($diffs as $i => $edit)
|
||||
{
|
||||
// If these are unchanged (copied) lines, and we want to keep leading or trailing context lines, extract them from the copy block.
|
||||
if (is_a($edit, 'diff_op_copy'))
|
||||
{
|
||||
// Do we have any diff blocks yet?
|
||||
if (is_array($block))
|
||||
{
|
||||
// How many lines to keep as context from the copy block.
|
||||
$keep = ($i == count($diffs) - 1) ? $ntrail : $nlead + $ntrail;
|
||||
if (count($edit->orig) <= $keep)
|
||||
{
|
||||
// We have less lines in the block than we want for context => keep the whole block.
|
||||
$block[] = $edit;
|
||||
}
|
||||
else
|
||||
{
|
||||
if ($ntrail)
|
||||
{
|
||||
// Create a new block with as many lines as we need for the trailing context.
|
||||
$context = array_slice($edit->orig, 0, $ntrail);
|
||||
$block[] = new diff_op_copy($context);
|
||||
}
|
||||
|
||||
$output .= $this->_block($x0, $ntrail + $xi - $x0, $y0, $ntrail + $yi - $y0, $block);
|
||||
$block = false;
|
||||
}
|
||||
}
|
||||
// Keep the copy block as the context for the next block.
|
||||
$context = $edit->orig;
|
||||
}
|
||||
else
|
||||
{
|
||||
// Don't we have any diff blocks yet?
|
||||
if (!is_array($block))
|
||||
{
|
||||
// Extract context lines from the preceding copy block.
|
||||
$context = array_slice($context, count($context) - $nlead);
|
||||
$x0 = $xi - count($context);
|
||||
$y0 = $yi - count($context);
|
||||
$block = array();
|
||||
|
||||
if ($context)
|
||||
{
|
||||
$block[] = new diff_op_copy($context);
|
||||
}
|
||||
}
|
||||
$block[] = $edit;
|
||||
}
|
||||
|
||||
$xi += ($edit->orig) ? count($edit->orig) : 0;
|
||||
$yi += ($edit->final) ? count($edit->final) : 0;
|
||||
}
|
||||
|
||||
if (is_array($block))
|
||||
{
|
||||
$output .= $this->_block($x0, $xi - $x0, $y0, $yi - $y0, $block);
|
||||
}
|
||||
|
||||
return $output . $this->_end_diff();
|
||||
}
|
||||
|
||||
function _block($xbeg, $xlen, $ybeg, $ylen, &$edits)
|
||||
{
|
||||
$output = $this->_start_block($this->_block_header($xbeg, $xlen, $ybeg, $ylen));
|
||||
|
||||
foreach ($edits as $edit)
|
||||
{
|
||||
switch (get_class($edit))
|
||||
{
|
||||
case 'diff_op_copy':
|
||||
$output .= $this->_context($edit->orig);
|
||||
break;
|
||||
|
||||
case 'diff_op_add':
|
||||
$output .= $this->_added($edit->final);
|
||||
break;
|
||||
|
||||
case 'diff_op_delete':
|
||||
$output .= $this->_deleted($edit->orig);
|
||||
break;
|
||||
|
||||
case 'diff_op_change':
|
||||
$output .= $this->_changed($edit->orig, $edit->final);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
return $output . $this->_end_block();
|
||||
}
|
||||
|
||||
function _start_diff()
|
||||
{
|
||||
return '';
|
||||
}
|
||||
|
||||
function _end_diff()
|
||||
{
|
||||
return '';
|
||||
}
|
||||
|
||||
function _block_header($xbeg, $xlen, $ybeg, $ylen)
|
||||
{
|
||||
if ($xlen > 1)
|
||||
{
|
||||
$xbeg .= ',' . ($xbeg + $xlen - 1);
|
||||
}
|
||||
|
||||
if ($ylen > 1)
|
||||
{
|
||||
$ybeg .= ',' . ($ybeg + $ylen - 1);
|
||||
}
|
||||
|
||||
// this matches the GNU Diff behaviour
|
||||
if ($xlen && !$ylen)
|
||||
{
|
||||
$ybeg--;
|
||||
}
|
||||
else if (!$xlen)
|
||||
{
|
||||
$xbeg--;
|
||||
}
|
||||
|
||||
return $xbeg . ($xlen ? ($ylen ? 'c' : 'd') : 'a') . $ybeg;
|
||||
}
|
||||
|
||||
function _start_block($header)
|
||||
{
|
||||
return $header . "\n";
|
||||
}
|
||||
|
||||
function _end_block()
|
||||
{
|
||||
return '';
|
||||
}
|
||||
|
||||
function _lines($lines, $prefix = ' ')
|
||||
{
|
||||
return $prefix . implode("\n$prefix", $lines) . "\n";
|
||||
}
|
||||
|
||||
function _context($lines)
|
||||
{
|
||||
return $this->_lines($lines, ' ');
|
||||
}
|
||||
|
||||
function _added($lines)
|
||||
{
|
||||
return $this->_lines($lines, '> ');
|
||||
}
|
||||
|
||||
function _deleted($lines)
|
||||
{
|
||||
return $this->_lines($lines, '< ');
|
||||
}
|
||||
|
||||
function _changed($orig, $final)
|
||||
{
|
||||
return $this->_deleted($orig) . "---\n" . $this->_added($final);
|
||||
}
|
||||
|
||||
/**
|
||||
* Our function to get the diff
|
||||
*/
|
||||
function get_diff_content($diff)
|
||||
{
|
||||
return $this->render($diff);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Renders a unified diff
|
||||
* @package diff
|
||||
*/
|
||||
class diff_renderer_unified extends diff_renderer
|
||||
{
|
||||
var $_leading_context_lines = 4;
|
||||
var $_trailing_context_lines = 4;
|
||||
|
||||
/**
|
||||
* Our function to get the diff
|
||||
*/
|
||||
function get_diff_content($diff)
|
||||
{
|
||||
return nl2br($this->render($diff));
|
||||
}
|
||||
|
||||
function _block_header($xbeg, $xlen, $ybeg, $ylen)
|
||||
{
|
||||
if ($xlen != 1)
|
||||
{
|
||||
$xbeg .= ',' . $xlen;
|
||||
}
|
||||
|
||||
if ($ylen != 1)
|
||||
{
|
||||
$ybeg .= ',' . $ylen;
|
||||
}
|
||||
return '<div class="diff"><big class="info">@@ -' . $xbeg . ' +' . $ybeg . ' @@</big></div>';
|
||||
}
|
||||
|
||||
function _context($lines)
|
||||
{
|
||||
return '<pre class="diff context">' . htmlspecialchars($this->_lines($lines, ' ')) . '<br /></pre>';
|
||||
}
|
||||
|
||||
function _added($lines)
|
||||
{
|
||||
return '<pre class="diff added">' . htmlspecialchars($this->_lines($lines, '+')) . '<br /></pre>';
|
||||
}
|
||||
|
||||
function _deleted($lines)
|
||||
{
|
||||
return '<pre class="diff removed">' . htmlspecialchars($this->_lines($lines, '-')) . '<br /></pre>';
|
||||
}
|
||||
|
||||
function _changed($orig, $final)
|
||||
{
|
||||
return $this->_deleted($orig) . $this->_added($final);
|
||||
}
|
||||
|
||||
function _start_diff()
|
||||
{
|
||||
$start = '<div class="file">';
|
||||
|
||||
return $start;
|
||||
}
|
||||
|
||||
function _end_diff()
|
||||
{
|
||||
return '</div>';
|
||||
}
|
||||
|
||||
function _end_block()
|
||||
{
|
||||
return '';
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* "Inline" diff renderer.
|
||||
*
|
||||
* This class renders diffs in the Wiki-style "inline" format.
|
||||
*
|
||||
* @author Ciprian Popovici
|
||||
* @package diff
|
||||
*/
|
||||
class diff_renderer_inline extends diff_renderer
|
||||
{
|
||||
var $_leading_context_lines = 10000;
|
||||
var $_trailing_context_lines = 10000;
|
||||
|
||||
// Prefix and suffix for inserted text
|
||||
var $_ins_prefix = '<span class="ins">';
|
||||
var $_ins_suffix = '</span>';
|
||||
|
||||
// Prefix and suffix for deleted text
|
||||
var $_del_prefix = '<span class="del">';
|
||||
var $_del_suffix = '</span>';
|
||||
|
||||
var $_block_head = '';
|
||||
|
||||
// What are we currently splitting on? Used to recurse to show word-level
|
||||
var $_split_level = 'lines';
|
||||
|
||||
/**
|
||||
* Our function to get the diff
|
||||
*/
|
||||
function get_diff_content($diff)
|
||||
{
|
||||
return '<pre>' . nl2br($this->render($diff)) . '<br /></pre>';
|
||||
}
|
||||
|
||||
function _start_diff()
|
||||
{
|
||||
return '';
|
||||
}
|
||||
|
||||
function _end_diff()
|
||||
{
|
||||
return '';
|
||||
}
|
||||
|
||||
function _block_header($xbeg, $xlen, $ybeg, $ylen)
|
||||
{
|
||||
return $this->_block_head;
|
||||
}
|
||||
|
||||
function _start_block($header)
|
||||
{
|
||||
return $header;
|
||||
}
|
||||
|
||||
function _lines($lines, $prefix = ' ', $encode = true)
|
||||
{
|
||||
if ($encode)
|
||||
{
|
||||
array_walk($lines, array(&$this, '_encode'));
|
||||
}
|
||||
|
||||
if ($this->_split_level == 'words')
|
||||
{
|
||||
return implode('', $lines);
|
||||
}
|
||||
else
|
||||
{
|
||||
return implode("\n", $lines) . "\n";
|
||||
}
|
||||
}
|
||||
|
||||
function _added($lines)
|
||||
{
|
||||
array_walk($lines, array(&$this, '_encode'));
|
||||
$lines[0] = $this->_ins_prefix . $lines[0];
|
||||
$lines[count($lines) - 1] .= $this->_ins_suffix;
|
||||
return $this->_lines($lines, ' ', false);
|
||||
}
|
||||
|
||||
function _deleted($lines, $words = false)
|
||||
{
|
||||
array_walk($lines, array(&$this, '_encode'));
|
||||
$lines[0] = $this->_del_prefix . $lines[0];
|
||||
$lines[count($lines) - 1] .= $this->_del_suffix;
|
||||
return $this->_lines($lines, ' ', false);
|
||||
}
|
||||
|
||||
function _changed($orig, $final)
|
||||
{
|
||||
// If we've already split on words, don't try to do so again - just display.
|
||||
if ($this->_split_level == 'words')
|
||||
{
|
||||
$prefix = '';
|
||||
while ($orig[0] !== false && $final[0] !== false && substr($orig[0], 0, 1) == ' ' && substr($final[0], 0, 1) == ' ')
|
||||
{
|
||||
$prefix .= substr($orig[0], 0, 1);
|
||||
$orig[0] = substr($orig[0], 1);
|
||||
$final[0] = substr($final[0], 1);
|
||||
}
|
||||
|
||||
return $prefix . $this->_deleted($orig) . $this->_added($final);
|
||||
}
|
||||
|
||||
$text1 = implode("\n", $orig);
|
||||
$text2 = implode("\n", $final);
|
||||
|
||||
// Non-printing newline marker.
|
||||
$nl = "\0";
|
||||
|
||||
// We want to split on word boundaries, but we need to preserve whitespace as well.
|
||||
// Therefore we split on words, but include all blocks of whitespace in the wordlist.
|
||||
$splitted_text_1 = $this->_split_on_words($text1, $nl);
|
||||
$splitted_text_2 = $this->_split_on_words($text2, $nl);
|
||||
|
||||
$diff = new diff($splitted_text_1, $splitted_text_2);
|
||||
unset($splitted_text_1, $splitted_text_2);
|
||||
|
||||
// Get the diff in inline format.
|
||||
$renderer = new diff_renderer_inline(array_merge($this->get_params(), array('split_level' => 'words')));
|
||||
|
||||
// Run the diff and get the output.
|
||||
return str_replace($nl, "\n", $renderer->render($diff)) . "\n";
|
||||
}
|
||||
|
||||
function _split_on_words($string, $newline_escape = "\n")
|
||||
{
|
||||
// Ignore \0; otherwise the while loop will never finish.
|
||||
$string = str_replace("\0", '', $string);
|
||||
|
||||
$words = array();
|
||||
$length = strlen($string);
|
||||
$pos = 0;
|
||||
|
||||
$tab_there = true;
|
||||
while ($pos < $length)
|
||||
{
|
||||
// Check for tabs... do not include them
|
||||
if ($tab_there && substr($string, $pos, 1) === "\t")
|
||||
{
|
||||
$words[] = "\t";
|
||||
$pos++;
|
||||
|
||||
continue;
|
||||
}
|
||||
else
|
||||
{
|
||||
$tab_there = false;
|
||||
}
|
||||
|
||||
// Eat a word with any preceding whitespace.
|
||||
$spaces = strspn(substr($string, $pos), " \n");
|
||||
$nextpos = strcspn(substr($string, $pos + $spaces), " \n");
|
||||
$words[] = str_replace("\n", $newline_escape, substr($string, $pos, $spaces + $nextpos));
|
||||
$pos += $spaces + $nextpos;
|
||||
}
|
||||
|
||||
return $words;
|
||||
}
|
||||
|
||||
function _encode(&$string)
|
||||
{
|
||||
$string = htmlspecialchars($string);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* "raw" diff renderer.
|
||||
* This class could be used to output a raw unified patch file
|
||||
*
|
||||
* @package diff
|
||||
*/
|
||||
class diff_renderer_raw extends diff_renderer
|
||||
{
|
||||
var $_leading_context_lines = 4;
|
||||
var $_trailing_context_lines = 4;
|
||||
|
||||
/**
|
||||
* Our function to get the diff
|
||||
*/
|
||||
function get_diff_content($diff)
|
||||
{
|
||||
return '<textarea style="height: 290px;" rows="15" cols="76" class="full">' . htmlspecialchars($this->render($diff)) . '</textarea>';
|
||||
}
|
||||
|
||||
function _block_header($xbeg, $xlen, $ybeg, $ylen)
|
||||
{
|
||||
if ($xlen != 1)
|
||||
{
|
||||
$xbeg .= ',' . $xlen;
|
||||
}
|
||||
|
||||
if ($ylen != 1)
|
||||
{
|
||||
$ybeg .= ',' . $ylen;
|
||||
}
|
||||
return '@@ -' . $xbeg . ' +' . $ybeg . ' @@';
|
||||
}
|
||||
|
||||
function _context($lines)
|
||||
{
|
||||
return $this->_lines($lines, ' ');
|
||||
}
|
||||
|
||||
function _added($lines)
|
||||
{
|
||||
return $this->_lines($lines, '+');
|
||||
}
|
||||
|
||||
function _deleted($lines)
|
||||
{
|
||||
return $this->_lines($lines, '-');
|
||||
}
|
||||
|
||||
function _changed($orig, $final)
|
||||
{
|
||||
return $this->_deleted($orig) . $this->_added($final);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* "chora (Horde)" diff renderer - similar style.
|
||||
* This renderer class is a modified human_readable function from the Horde Framework.
|
||||
*
|
||||
* @package diff
|
||||
*/
|
||||
class diff_renderer_side_by_side extends diff_renderer
|
||||
{
|
||||
var $_leading_context_lines = 3;
|
||||
var $_trailing_context_lines = 3;
|
||||
|
||||
var $lines = array();
|
||||
|
||||
// Hold the left and right columns of lines for change blocks.
|
||||
var $cols;
|
||||
var $state;
|
||||
|
||||
var $data = false;
|
||||
|
||||
/**
|
||||
* Our function to get the diff
|
||||
*/
|
||||
function get_diff_content($diff)
|
||||
{
|
||||
global $user;
|
||||
|
||||
$output = '';
|
||||
$output .= '<table cellspacing="0" class="hrdiff">
|
||||
<caption>
|
||||
<span class="unmodified"> </span> ' . $user->lang['LINE_UNMODIFIED'] . '
|
||||
<span class="added"> </span> ' . $user->lang['LINE_ADDED'] . '
|
||||
<span class="modified"> </span> ' . $user->lang['LINE_MODIFIED'] . '
|
||||
<span class="removed"> </span> ' . $user->lang['LINE_REMOVED'] . '
|
||||
</caption>
|
||||
<tbody>
|
||||
';
|
||||
|
||||
$this->render($diff);
|
||||
|
||||
// Is the diff empty?
|
||||
if (!count($this->lines))
|
||||
{
|
||||
$output .= '<tr><th colspan="2">' . $user->lang['NO_VISIBLE_CHANGES'] . '</th></tr>';
|
||||
}
|
||||
else
|
||||
{
|
||||
// Iterate through every header block of changes
|
||||
foreach ($this->lines as $header)
|
||||
{
|
||||
$output .= '<tr><th>' . $user->lang['LINE'] . ' ' . $header['oldline'] . '</th><th>' . $user->lang['LINE'] . ' ' . $header['newline'] . '</th></tr>';
|
||||
|
||||
// Each header block consists of a number of changes (add, remove, change).
|
||||
$current_context = '';
|
||||
|
||||
foreach ($header['contents'] as $change)
|
||||
{
|
||||
if (!empty($current_context) && $change['type'] != 'empty')
|
||||
{
|
||||
$line = $current_context;
|
||||
$current_context = '';
|
||||
|
||||
$output .= '<tr class="unmodified"><td><pre>' . ((strlen($line)) ? $line : ' ') . '<br /></pre></td>
|
||||
<td><pre>' . ((strlen($line)) ? $line : ' ') . '<br /></pre></td></tr>';
|
||||
}
|
||||
|
||||
switch ($change['type'])
|
||||
{
|
||||
case 'add':
|
||||
$line = '';
|
||||
|
||||
foreach ($change['lines'] as $_line)
|
||||
{
|
||||
$line .= htmlspecialchars($_line) . '<br />';
|
||||
}
|
||||
|
||||
$output .= '<tr><td class="added_empty"> </td><td class="added"><pre>' . ((strlen($line)) ? $line : ' ') . '<br /></pre></td></tr>';
|
||||
break;
|
||||
|
||||
case 'remove':
|
||||
$line = '';
|
||||
|
||||
foreach ($change['lines'] as $_line)
|
||||
{
|
||||
$line .= htmlspecialchars($_line) . '<br />';
|
||||
}
|
||||
|
||||
$output .= '<tr><td class="removed"><pre>' . ((strlen($line)) ? $line : ' ') . '<br /></pre></td><td class="removed_empty"> </td></tr>';
|
||||
break;
|
||||
|
||||
case 'empty':
|
||||
$current_context .= htmlspecialchars($change['line']) . '<br />';
|
||||
break;
|
||||
|
||||
case 'change':
|
||||
// Pop the old/new stacks one by one, until both are empty.
|
||||
$oldsize = count($change['old']);
|
||||
$newsize = count($change['new']);
|
||||
$left = $right = '';
|
||||
|
||||
for ($row = 0, $row_max = max($oldsize, $newsize); $row < $row_max; ++$row)
|
||||
{
|
||||
$left .= isset($change['old'][$row]) ? htmlspecialchars($change['old'][$row]) : '';
|
||||
$left .= '<br />';
|
||||
$right .= isset($change['new'][$row]) ? htmlspecialchars($change['new'][$row]) : '';
|
||||
$right .= '<br />';
|
||||
}
|
||||
|
||||
$output .= '<tr>';
|
||||
|
||||
if (!empty($left))
|
||||
{
|
||||
$output .= '<td class="modified"><pre>' . $left . '<br /></pre></td>';
|
||||
}
|
||||
else if ($row < $oldsize)
|
||||
{
|
||||
$output .= '<td class="modified"> </td>';
|
||||
}
|
||||
else
|
||||
{
|
||||
$output .= '<td class="unmodified"> </td>';
|
||||
}
|
||||
|
||||
if (!empty($right))
|
||||
{
|
||||
$output .= '<td class="modified"><pre>' . $right . '<br /></pre></td>';
|
||||
}
|
||||
else if ($row < $newsize)
|
||||
{
|
||||
$output .= '<td class="modified"> </td>';
|
||||
}
|
||||
else
|
||||
{
|
||||
$output .= '<td class="unmodified"> </td>';
|
||||
}
|
||||
|
||||
$output .= '</tr>';
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
if (!empty($current_context))
|
||||
{
|
||||
$line = $current_context;
|
||||
$current_context = '';
|
||||
|
||||
$output .= '<tr class="unmodified"><td><pre>' . ((strlen($line)) ? $line : ' ') . '<br /></pre></td>';
|
||||
$output .= '<td><pre>' . ((strlen($line)) ? $line : ' ') . '<br /></pre></td></tr>';
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
$output .= '</tbody></table>';
|
||||
|
||||
return $output;
|
||||
}
|
||||
|
||||
function _start_diff()
|
||||
{
|
||||
$this->lines = array();
|
||||
|
||||
$this->data = false;
|
||||
$this->cols = array(array(), array());
|
||||
$this->state = 'empty';
|
||||
|
||||
return '';
|
||||
}
|
||||
|
||||
function _end_diff()
|
||||
{
|
||||
// Just flush any remaining entries in the columns stack.
|
||||
switch ($this->state)
|
||||
{
|
||||
case 'add':
|
||||
$this->data['contents'][] = array('type' => 'add', 'lines' => $this->cols[0]);
|
||||
break;
|
||||
|
||||
case 'remove':
|
||||
// We have some removal lines pending in our stack, so flush them.
|
||||
$this->data['contents'][] = array('type' => 'remove', 'lines' => $this->cols[0]);
|
||||
break;
|
||||
|
||||
case 'change':
|
||||
// We have both remove and addition lines, so this is a change block.
|
||||
$this->data['contents'][] = array('type' => 'change', 'old' => $this->cols[0], 'new' => $this->cols[1]);
|
||||
break;
|
||||
}
|
||||
|
||||
if ($this->data !== false)
|
||||
{
|
||||
$this->lines[] = $this->data;
|
||||
}
|
||||
|
||||
return '';
|
||||
}
|
||||
|
||||
function _block_header($xbeg, $xlen, $ybeg, $ylen)
|
||||
{
|
||||
// Push any previous header information to the return stack.
|
||||
if ($this->data !== false)
|
||||
{
|
||||
$this->lines[] = $this->data;
|
||||
}
|
||||
|
||||
$this->data = array('type' => 'header', 'oldline' => $xbeg, 'newline' => $ybeg, 'contents' => array());
|
||||
$this->state = 'dump';
|
||||
}
|
||||
|
||||
function _added($lines)
|
||||
{
|
||||
array_walk($lines, array(&$this, '_perform_add'));
|
||||
}
|
||||
|
||||
function _perform_add($line)
|
||||
{
|
||||
if ($this->state == 'empty')
|
||||
{
|
||||
return '';
|
||||
}
|
||||
|
||||
// This is just an addition line.
|
||||
if ($this->state == 'dump' || $this->state == 'add')
|
||||
{
|
||||
// Start adding to the addition stack.
|
||||
$this->cols[0][] = $line;
|
||||
$this->state = 'add';
|
||||
}
|
||||
else
|
||||
{
|
||||
// This is inside a change block, so start accumulating lines.
|
||||
$this->state = 'change';
|
||||
$this->cols[1][] = $line;
|
||||
}
|
||||
}
|
||||
|
||||
function _deleted($lines)
|
||||
{
|
||||
array_walk($lines, array(&$this, '_perform_delete'));
|
||||
}
|
||||
|
||||
function _perform_delete($line)
|
||||
{
|
||||
// This is a removal line.
|
||||
$this->state = 'remove';
|
||||
$this->cols[0][] = $line;
|
||||
}
|
||||
|
||||
function _context($lines)
|
||||
{
|
||||
array_walk($lines, array(&$this, '_perform_context'));
|
||||
}
|
||||
|
||||
function _perform_context($line)
|
||||
{
|
||||
// An empty block with no action.
|
||||
switch ($this->state)
|
||||
{
|
||||
case 'add':
|
||||
$this->data['contents'][] = array('type' => 'add', 'lines' => $this->cols[0]);
|
||||
break;
|
||||
|
||||
case 'remove':
|
||||
// We have some removal lines pending in our stack, so flush them.
|
||||
$this->data['contents'][] = array('type' => 'remove', 'lines' => $this->cols[0]);
|
||||
break;
|
||||
|
||||
case 'change':
|
||||
// We have both remove and addition lines, so this is a change block.
|
||||
$this->data['contents'][] = array('type' => 'change', 'old' => $this->cols[0], 'new' => $this->cols[1]);
|
||||
break;
|
||||
}
|
||||
|
||||
$this->cols = array(array(), array());
|
||||
$this->data['contents'][] = array('type' => 'empty', 'line' => $line);
|
||||
$this->state = 'dump';
|
||||
}
|
||||
|
||||
function _changed($orig, $final)
|
||||
{
|
||||
return $this->_deleted($orig) . $this->_added($final);
|
||||
}
|
||||
|
||||
}
|
||||
Reference in New Issue
Block a user