includes/diffengine/Engine/native.php
author Dan Fuhry <dan@enanocms.org>
Fri, 30 Jul 2010 21:31:30 -0400
changeset 1279 0bc945385d74
parent 1227 bdac73ed481e
permissions -rw-r--r--
Enabled content-length in Special:DownloadFile even when gzip is on. Should probably check the http spec to see if Content-Length should match the decoded or encoded length
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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<?php
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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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 *
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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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 *
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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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 * 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
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 * code was written by him, and is used/adapted with his permission.
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 *
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 * $Horde: framework/Text_Diff/Diff/Engine/native.php,v 1.3 2006/01/06 15:56:52 jan Exp $
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 *
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 * @author  Geoffrey T. Dairiki <dairiki@dairiki.org>
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 * @package Text_Diff
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 *
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 * @access private
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 */
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class Text_Diff_Engine_native {
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		function diff($from_lines, $to_lines)
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		{
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				array_walk($from_lines, array('Text_Diff', 'trimNewlines'));
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				array_walk($to_lines, array('Text_Diff', 'trimNewlines'));
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				$n_from = count($from_lines);
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				$n_to = count($to_lines);
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				$this->xchanged = $this->ychanged = array();
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				$this->xv = $this->yv = array();
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				$this->xind = $this->yind = array();
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				unset($this->seq);
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				unset($this->in_seq);
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				unset($this->lcs);
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				// Skip leading common lines.
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				for ($skip = 0; $skip < $n_from && $skip < $n_to; $skip++) {
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						if ($from_lines[$skip] !== $to_lines[$skip]) {
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								break;
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						}
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						$this->xchanged[$skip] = $this->ychanged[$skip] = false;
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				}
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				// Skip trailing common lines.
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				$xi = $n_from; $yi = $n_to;
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				for ($endskip = 0; --$xi > $skip && --$yi > $skip; $endskip++) {
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						if ($from_lines[$xi] !== $to_lines[$yi]) {
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								break;
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						}
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						$this->xchanged[$xi] = $this->ychanged[$yi] = false;
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				}
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				// Ignore lines which do not exist in both files.
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				for ($xi = $skip; $xi < $n_from - $endskip; $xi++) {
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						$xhash[$from_lines[$xi]] = 1;
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				}
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				for ($yi = $skip; $yi < $n_to - $endskip; $yi++) {
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						$line = $to_lines[$yi];
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						if (($this->ychanged[$yi] = empty($xhash[$line]))) {
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								continue;
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						}
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						$yhash[$line] = 1;
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						$this->yv[] = $line;
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						$this->yind[] = $yi;
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				}
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				for ($xi = $skip; $xi < $n_from - $endskip; $xi++) {
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						$line = $from_lines[$xi];
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						if (($this->xchanged[$xi] = empty($yhash[$line]))) {
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								continue;
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						}
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						$this->xv[] = $line;
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						$this->xind[] = $xi;
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				}
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				// Find the LCS.
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				$this->_compareseq(0, count($this->xv), 0, count($this->yv));
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				// Merge edits when possible.
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				$this->_shiftBoundaries($from_lines, $this->xchanged, $this->ychanged);
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				$this->_shiftBoundaries($to_lines, $this->ychanged, $this->xchanged);
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				// Compute the edit operations.
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				$edits = array();
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				$xi = $yi = 0;
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				while ($xi < $n_from || $yi < $n_to) {
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						assert($yi < $n_to || $this->xchanged[$xi]);
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						assert($xi < $n_from || $this->ychanged[$yi]);
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						// Skip matching "snake".
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						$copy = array();
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						while ($xi < $n_from && $yi < $n_to
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 									&& !$this->xchanged[$xi] && !$this->ychanged[$yi]) {
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								$copy[] = $from_lines[$xi++];
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								++$yi;
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						}
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						if ($copy) {
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								$edits[] = &new Text_Diff_Op_copy($copy);
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						}
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						// Find deletes & adds.
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						$delete = array();
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						while ($xi < $n_from && $this->xchanged[$xi]) {
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								$delete[] = $from_lines[$xi++];
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						}
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						$add = array();
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						while ($yi < $n_to && $this->ychanged[$yi]) {
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								$add[] = $to_lines[$yi++];
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						}
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						if ($delete && $add) {
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								$edits[] = &new Text_Diff_Op_change($delete, $add);
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						} elseif ($delete) {
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								$edits[] = &new Text_Diff_Op_delete($delete);
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						} elseif ($add) {
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								$edits[] = &new Text_Diff_Op_add($add);
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						}
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				}
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				return $edits;
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		}
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		/**
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 		* Divides the Largest Common Subsequence (LCS) of the sequences (XOFF,
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 		* XLIM) and (YOFF, YLIM) into NCHUNKS approximately equally sized
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 		* segments.
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 		*
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 		* Returns (LCS, PTS).  LCS is the length of the LCS. PTS is an array of
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 		* NCHUNKS+1 (X, Y) indexes giving the diving points between sub
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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 		* sequences.  The first sub-sequence is contained in (X0, X1), (Y0, Y1),
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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 		* the second in (X1, X2), (Y1, Y2) and so on.  Note that (X0, Y0) ==
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 		* (XOFF, YOFF) and (X[NCHUNKS], Y[NCHUNKS]) == (XLIM, YLIM).
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 		*
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 		* This function assumes that the first lines of the specified portions of
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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 		* the two files do not match, and likewise that the last lines do not
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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 		* match.  The caller must trim matching lines from the beginning and end
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 		* of the portions it is going to specify.
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 		*/
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		function _diag ($xoff, $xlim, $yoff, $ylim, $nchunks)
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		{
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				$flip = false;
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				if ($xlim - $xoff > $ylim - $yoff) {
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						/* Things seems faster (I'm not sure I understand why) when the
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 						* shortest sequence is in X. */
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						$flip = true;
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						list ($xoff, $xlim, $yoff, $ylim)
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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								= array($yoff, $ylim, $xoff, $xlim);
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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				}
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				if ($flip) {
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						for ($i = $ylim - 1; $i >= $yoff; $i--) {
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								$ymatches[$this->xv[$i]][] = $i;
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						}
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				} else {
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						for ($i = $ylim - 1; $i >= $yoff; $i--) {
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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								$ymatches[$this->yv[$i]][] = $i;
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						}
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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				}
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				$this->lcs = 0;
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				$this->seq[0]= $yoff - 1;
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				$this->in_seq = array();
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				$ymids[0] = array();
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				$numer = $xlim - $xoff + $nchunks - 1;
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				$x = $xoff;
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				for ($chunk = 0; $chunk < $nchunks; $chunk++) {
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						if ($chunk > 0) {
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								for ($i = 0; $i <= $this->lcs; $i++) {
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										$ymids[$i][$chunk - 1] = $this->seq[$i];
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								}
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						}
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						$x1 = $xoff + (int)(($numer + ($xlim-$xoff)*$chunk) / $nchunks);
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						for (; $x < $x1; $x++) {
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								$line = $flip ? $this->yv[$x] : $this->xv[$x];
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								if (empty($ymatches[$line])) {
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										continue;
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								}
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								$matches = $ymatches[$line];
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								foreach ($matches as $y) {
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										if (empty($this->in_seq[$y])) {
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												$k = $this->_lcsPos($y);
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												assert($k > 0);
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												$ymids[$k] = $ymids[$k - 1];
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												break;
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										}
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								}
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1227
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								while (list($junk, $y) = each($matches)) {
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										if ($y > $this->seq[$k - 1]) {
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												assert($y < $this->seq[$k]);
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												/* Optimization: this is a common case: next match is
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 												* just replacing previous match. */
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												$this->in_seq[$this->seq[$k]] = false;
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												$this->seq[$k] = $y;
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												$this->in_seq[$y] = 1;
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										} elseif (empty($this->in_seq[$y])) {
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												$k = $this->_lcsPos($y);
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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												assert($k > 0);
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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												$ymids[$k] = $ymids[$k - 1];
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										}
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								}
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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						}
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				}
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1227
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				$seps[] = $flip ? array($yoff, $xoff) : array($xoff, $yoff);
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				$ymid = $ymids[$this->lcs];
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				for ($n = 0; $n < $nchunks - 1; $n++) {
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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						$x1 = $xoff + (int)(($numer + ($xlim - $xoff) * $n) / $nchunks);
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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						$y1 = $ymid[$n] + 1;
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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						$seps[] = $flip ? array($y1, $x1) : array($x1, $y1);
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				}
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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				$seps[] = $flip ? array($ylim, $xlim) : array($xlim, $ylim);
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1227
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				return array($this->lcs, $seps);
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		}
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1227
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		function _lcsPos($ypos)
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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		{
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				$end = $this->lcs;
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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				if ($end == 0 || $ypos > $this->seq[$end]) {
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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						$this->seq[++$this->lcs] = $ypos;
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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diff changeset
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						$this->in_seq[$ypos] = 1;
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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						return $this->lcs;
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				}
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1227
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				$beg = 1;
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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				while ($beg < $end) {
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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						$mid = (int)(($beg + $end) / 2);
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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diff changeset
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						if ($ypos > $this->seq[$mid]) {
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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								$beg = $mid + 1;
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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						} else {
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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								$end = $mid;
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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						}
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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				}
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diff changeset
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				assert($ypos != $this->seq[$end]);
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				$this->in_seq[$this->seq[$end]] = false;
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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diff changeset
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				$this->seq[$end] = $ypos;
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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				$this->in_seq[$ypos] = 1;
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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				return $end;
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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		}
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1227
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		/**
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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 		* Finds LCS of two sequences.
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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 		*
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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 		* The results are recorded in the vectors $this->{x,y}changed[], by
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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 		* storing a 1 in the element for each line that is an insertion or
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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diff changeset
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 		* deletion (ie. is not in the LCS).
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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diff changeset
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 		*
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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 		* The subsequence of file 0 is (XOFF, XLIM) and likewise for file 1.
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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diff changeset
   264
 		*
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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 		* Note that XLIM, YLIM are exclusive bounds.  All line numbers are
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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 		* origin-0 and discarded lines are not counted.
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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 		*/
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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		function _compareseq ($xoff, $xlim, $yoff, $ylim)
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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		{
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				/* Slide down the bottom initial diagonal. */
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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				while ($xoff < $xlim && $yoff < $ylim
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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 							&& $this->xv[$xoff] == $this->yv[$yoff]) {
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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						++$xoff;
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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						++$yoff;
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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				}
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				/* Slide up the top initial diagonal. */
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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				while ($xlim > $xoff && $ylim > $yoff
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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diff changeset
   279
 							&& $this->xv[$xlim - 1] == $this->yv[$ylim - 1]) {
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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						--$xlim;
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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						--$ylim;
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				}
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   284
				if ($xoff == $xlim || $yoff == $ylim) {
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						$lcs = 0;
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				} else {
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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						/* This is ad hoc but seems to work well.  $nchunks =
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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 						* sqrt(min($xlim - $xoff, $ylim - $yoff) / 2.5); $nchunks =
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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 						* max(2,min(8,(int)$nchunks)); */
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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						$nchunks = min(7, $xlim - $xoff, $ylim - $yoff) + 1;
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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						list($lcs, $seps)
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								= $this->_diag($xoff, $xlim, $yoff, $ylim, $nchunks);
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				}
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1227
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   295
				if ($lcs == 0) {
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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						/* X and Y sequences have no common subsequence: mark all
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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   297
 						* changed. */
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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   298
						while ($yoff < $ylim) {
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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								$this->ychanged[$this->yind[$yoff++]] = 1;
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   300
						}
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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   301
						while ($xoff < $xlim) {
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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								$this->xchanged[$this->xind[$xoff++]] = 1;
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						}
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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   304
				} else {
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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diff changeset
   305
						/* Use the partitions to split this problem into subproblems. */
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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   306
						reset($seps);
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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   307
						$pt1 = $seps[0];
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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   308
						while ($pt2 = next($seps)) {
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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   309
								$this->_compareseq ($pt1[0], $pt2[0], $pt1[1], $pt2[1]);
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								$pt1 = $pt2;
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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   311
						}
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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				}
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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		}
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1227
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diff changeset
   315
		/**
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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diff changeset
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 		* Adjusts inserts/deletes of identical lines to join changes as much as
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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diff changeset
   317
 		* possible.
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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   318
 		*
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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diff changeset
   319
 		* We do something when a run of changed lines include a line at one end
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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diff changeset
   320
 		* and has an excluded, identical line at the other.  We are free to
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
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diff changeset
   321
 		* choose which identical line is included.  `compareseq' usually chooses
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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diff changeset
   322
 		* the one at the beginning, but usually it is cleaner to consider the
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   323
 		* following identical line to be the "change".
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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diff changeset
   324
 		*
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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diff changeset
   325
 		* This is extracted verbatim from analyze.c (GNU diffutils-2.7).
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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diff changeset
   326
 		*/
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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diff changeset
   327
		function _shiftBoundaries($lines, &$changed, $other_changed)
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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diff changeset
   328
		{
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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diff changeset
   329
				$i = 0;
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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diff changeset
   330
				$j = 0;
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   331
1227
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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diff changeset
   332
				assert('count($lines) == count($changed)');
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
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diff changeset
   333
				$len = count($lines);
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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diff changeset
   334
				$other_len = count($other_changed);
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   335
1227
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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diff changeset
   336
				while (1) {
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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diff changeset
   337
						/* Scan forward to find the beginning of another run of
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
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diff changeset
   338
 						* changes. Also keep track of the corresponding point in the
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   339
 						* other file.
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
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diff changeset
   340
 						*
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   341
 						* Throughout this code, $i and $j are adjusted together so that
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   342
 						* the first $i elements of $changed and the first $j elements of
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   343
 						* $other_changed both contain the same number of zeros (unchanged
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   344
 						* lines).
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
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diff changeset
   345
 						*
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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diff changeset
   346
 						* Furthermore, $j is always kept so that $j == $other_len or
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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diff changeset
   347
 						* $other_changed[$j] == false. */
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
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diff changeset
   348
						while ($j < $other_len && $other_changed[$j]) {
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
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diff changeset
   349
								$j++;
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
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diff changeset
   350
						}
1
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   351
1227
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   352
						while ($i < $len && ! $changed[$i]) {
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
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diff changeset
   353
								assert('$j < $other_len && ! $other_changed[$j]');
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
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diff changeset
   354
								$i++; $j++;
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   355
								while ($j < $other_len && $other_changed[$j]) {
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   356
										$j++;
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   357
								}
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
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diff changeset
   358
						}
1
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   359
1227
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
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diff changeset
   360
						if ($i == $len) {
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   361
								break;
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
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diff changeset
   362
						}
1
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   363
1227
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   364
						$start = $i;
1
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   365
1227
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   366
						/* Find the end of this run of changes. */
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   367
						while (++$i < $len && $changed[$i]) {
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   368
								continue;
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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diff changeset
   369
						}
1
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1227
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
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diff changeset
   371
						do {
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
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diff changeset
   372
								/* Record the length of this run of changes, so that we can
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   373
 								* later determine whether the run has grown. */
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
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diff changeset
   374
								$runlength = $i - $start;
1
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1227
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   376
								/* Move the changed region back, so long as the previous
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   377
 								* unchanged line matches the last changed one.  This merges
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   378
 								* with previous changed regions. */
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   379
								while ($start > 0 && $lines[$start - 1] == $lines[$i - 1]) {
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   380
										$changed[--$start] = 1;
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   381
										$changed[--$i] = false;
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   382
										while ($start > 0 && $changed[$start - 1]) {
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   383
												$start--;
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   384
										}
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   385
										assert('$j > 0');
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   386
										while ($other_changed[--$j]) {
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   387
												continue;
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   388
										}
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   389
										assert('$j >= 0 && !$other_changed[$j]');
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   390
								}
1
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   391
1227
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   392
								/* Set CORRESPONDING to the end of the changed run, at the
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   393
 								* last point where it corresponds to a changed run in the
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   394
 								* other file. CORRESPONDING == LEN means no such point has
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   395
 								* been found. */
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   396
								$corresponding = $j < $other_len ? $i : $len;
1
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   397
1227
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   398
								/* Move the changed region forward, so long as the first
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   399
 								* changed line matches the following unchanged one.  This
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   400
 								* merges with following changed regions.  Do this second, so
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   401
 								* that if there are no merges, the changed region is moved
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   402
 								* forward as far as possible. */
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   403
								while ($i < $len && $lines[$start] == $lines[$i]) {
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   404
										$changed[$start++] = false;
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   405
										$changed[$i++] = 1;
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   406
										while ($i < $len && $changed[$i]) {
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   407
												$i++;
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   408
										}
1
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   409
1227
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   410
										assert('$j < $other_len && ! $other_changed[$j]');
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   411
										$j++;
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   412
										if ($j < $other_len && $other_changed[$j]) {
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   413
												$corresponding = $i;
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   414
												while ($j < $other_len && $other_changed[$j]) {
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   415
														$j++;
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   416
												}
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   417
										}
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   418
								}
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   419
						} while ($runlength != $i - $start);
1
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   420
1227
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   421
						/* If possible, move the fully-merged run of changes back to a
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   422
 						* corresponding run in the other file. */
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   423
						while ($corresponding < $i) {
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   424
								$changed[--$start] = 1;
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   425
								$changed[--$i] = 0;
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   426
								assert('$j > 0');
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   427
								while ($other_changed[--$j]) {
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   428
										continue;
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   429
								}
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   430
								assert('$j >= 0 && !$other_changed[$j]');
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   431
						}
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   432
				}
bdac73ed481e Going ahead with the switch to tabs. This is a major coding standards change! If any unusual parser bugs show up, check this changeset. Converted all .php, .js, .tpl, .css, and .json files and did basic testing.
Dan
parents: 1
diff changeset
   433
		}
1
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   434
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   435
}