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webroot/forum/inc/3rdparty/diff/Diff/Engine/Native.php vendored Normal file
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<?php
/**
* Class used internally by Horde_Text_Diff to actually compute the diffs.
*
* This class is implemented using native PHP code.
*
* The algorithm used here is mostly lifted from the perl module
* Algorithm::Diff (version 1.06) by Ned Konz, which is available at:
* http://www.perl.com/CPAN/authors/id/N/NE/NEDKONZ/Algorithm-Diff-1.06.zip
*
* More ideas are taken from: http://www.ics.uci.edu/~eppstein/161/960229.html
*
* Some ideas (and a bit of code) are taken from analyze.c, of GNU
* diffutils-2.7, which can be found at:
* ftp://gnudist.gnu.org/pub/gnu/diffutils/diffutils-2.7.tar.gz
*
* Some ideas (subdivision by NCHUNKS > 2, and some optimizations) are from
* Geoffrey T. Dairiki <dairiki@dairiki.org>. The original PHP version of this
* code was written by him, and is used/adapted with his permission.
*
* Copyright 2004-2017 Horde LLC (http://www.horde.org/)
*
* See the enclosed file LICENSE for license information (LGPL). If you did
* not receive this file, see http://www.horde.org/licenses/lgpl21.
*
* @author Geoffrey T. Dairiki <dairiki@dairiki.org>
* @package Text_Diff
*/
// Disallow direct access to this file for security reasons
if(!defined("IN_MYBB"))
{
die("Direct initialization of this file is not allowed.<br /><br />Please make sure IN_MYBB is defined.");
}
class Horde_Text_Diff_Engine_Native
{
public function diff($from_lines, $to_lines)
{
array_walk($from_lines, array('Horde_Text_Diff', 'trimNewlines'));
array_walk($to_lines, array('Horde_Text_Diff', 'trimNewlines'));
$n_from = count($from_lines);
$n_to = count($to_lines);
$this->xchanged = $this->ychanged = array();
$this->xv = $this->yv = array();
$this->xind = $this->yind = array();
unset($this->seq);
unset($this->in_seq);
unset($this->lcs);
// Skip leading common lines.
for ($skip = 0; $skip < $n_from && $skip < $n_to; $skip++) {
if ($from_lines[$skip] !== $to_lines[$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; $endskip++) {
if ($from_lines[$xi] !== $to_lines[$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++) {
$xhash[$from_lines[$xi]] = 1;
}
for ($yi = $skip; $yi < $n_to - $endskip; $yi++) {
$line = $to_lines[$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 = $from_lines[$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.
$this->_shiftBoundaries($from_lines, $this->xchanged, $this->ychanged);
$this->_shiftBoundaries($to_lines, $this->ychanged, $this->xchanged);
// Compute the edit operations.
$edits = array();
$xi = $yi = 0;
while ($xi < $n_from || $yi < $n_to) {
assert($yi < $n_to || $this->xchanged[$xi]);
assert($xi < $n_from || $this->ychanged[$yi]);
// Skip matching "snake".
$copy = array();
while ($xi < $n_from && $yi < $n_to
&& !$this->xchanged[$xi] && !$this->ychanged[$yi]) {
$copy[] = $from_lines[$xi++];
++$yi;
}
if ($copy) {
$edits[] = new Horde_Text_Diff_Op_Copy($copy);
}
// Find deletes & adds.
$delete = array();
while ($xi < $n_from && $this->xchanged[$xi]) {
$delete[] = $from_lines[$xi++];
}
$add = array();
while ($yi < $n_to && $this->ychanged[$yi]) {
$add[] = $to_lines[$yi++];
}
if ($delete && $add) {
$edits[] = new Horde_Text_Diff_Op_Change($delete, $add);
} elseif ($delete) {
$edits[] = new Horde_Text_Diff_Op_Delete($delete);
} elseif ($add) {
$edits[] = new Horde_Text_Diff_Op_Add($add);
}
}
return $edits;
}
/**
* Divides the Largest Common Subsequence (LCS) of the sequences (XOFF,
* XLIM) and (YOFF, YLIM) into NCHUNKS approximately equally sized
* segments.
*
* Returns (LCS, PTS). LCS is the length of the LCS. PTS is an array of
* NCHUNKS+1 (X, Y) indexes giving the diving points between sub
* sequences. The first sub-sequence is contained in (X0, X1), (Y0, Y1),
* the second in (X1, X2), (Y1, Y2) and so on. Note that (X0, Y0) ==
* (XOFF, YOFF) and (X[NCHUNKS], Y[NCHUNKS]) == (XLIM, YLIM).
*
* This public function assumes that the first lines of the specified portions of
* the two files do not match, and likewise that the last lines do not
* match. The caller must trim matching lines from the beginning and end
* of the portions it is going to specify.
*/
protected function _diag ($xoff, $xlim, $yoff, $ylim, $nchunks)
{
$flip = false;
if ($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($matches);
while (($y = current($matches)) !== false) {
if (empty($this->in_seq[$y])) {
$k = $this->_lcsPos($y);
assert($k > 0);
$ymids[$k] = $ymids[$k - 1];
break;
}
next($matches);
}
while (($y = current($matches)) !== false) {
if ($y > $this->seq[$k - 1]) {
assert($y <= $this->seq[$k]);
/* 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;
} elseif (empty($this->in_seq[$y])) {
$k = $this->_lcsPos($y);
assert($k > 0);
$ymids[$k] = $ymids[$k - 1];
}
next($matches);
}
}
}
$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, $seps);
}
protected function _lcsPos($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 = $mid;
}
}
assert($ypos != $this->seq[$end]);
$this->in_seq[$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 $this->{x,y}changed[], by
* storing a 1 in the element for each line that is an insertion or
* deletion (ie. is not in the LCS).
*
* The subsequence of file 0 is (XOFF, XLIM) and likewise for file 1.
*
* Note that XLIM, YLIM are exclusive bounds. All line numbers are
* origin-0 and discarded lines are not counted.
*/
protected function _compareseq ($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 = $pt2;
}
}
}
/**
* Adjusts inserts/deletes of identical lines to join changes as much as
* possible.
*
* We do something when a run of changed lines include a line at one end
* and has an excluded, identical line at the other. We are free to
* choose which identical line is included. `compareseq' usually chooses
* the one at the beginning, but usually it is cleaner to consider the
* following identical line to be the "change".
*
* This is extracted verbatim from analyze.c (GNU diffutils-2.7).
*/
protected function _shiftBoundaries($lines, &$changed, $other_changed)
{
$i = 0;
$j = 0;
assert(count($lines) == count($changed));
$len = count($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]) {
assert($j < $other_len && ! $other_changed[$j]);
$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]) {
$start--;
}
assert($j > 0);
while ($other_changed[--$j]) {
continue;
}
assert($j >= 0 && !$other_changed[$j]);
}
/* 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]) {
$i++;
}
assert($j < $other_len && ! $other_changed[$j]);
$j++;
if ($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;
assert($j > 0);
while ($other_changed[--$j]) {
continue;
}
assert($j >= 0 && !$other_changed[$j]);
}
}
}
}

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<?php
/**
* Class used internally by Diff to actually compute the diffs.
*
* This class uses the Unix `diff` program via shell_exec to compute the
* differences between the two input arrays.
*
* Copyright 2007-2017 Horde LLC (http://www.horde.org/)
*
* See the enclosed file COPYING for license information (LGPL). If you did
* not receive this file, see http://www.horde.org/licenses/lgpl21.
*
* @author Milian Wolff <mail@milianw.de>
* @package Text_Diff
*/
// Disallow direct access to this file for security reasons
if(!defined("IN_MYBB"))
{
die("Direct initialization of this file is not allowed.<br /><br />Please make sure IN_MYBB is defined.");
}
class Horde_Text_Diff_Engine_Shell
{
/**
* Path to the diff executable
*
* @var string
*/
protected $_diffCommand = 'diff';
/**
* Returns the array of differences.
*
* @param array $from_lines lines of text from old file
* @param array $to_lines lines of text from new file
*
* @return array all changes made (array with Horde_Text_Diff_Op_* objects)
*/
public function diff($from_lines, $to_lines)
{
array_walk($from_lines, array('Horde_Text_Diff', 'trimNewlines'));
array_walk($to_lines, array('Horde_Text_Diff', 'trimNewlines'));
// Execute gnu diff or similar to get a standard diff file.
$from_file = Horde_Util::getTempFile('Horde_Text_Diff');
$to_file = Horde_Util::getTempFile('Horde_Text_Diff');
$fp = fopen($from_file, 'w');
fwrite($fp, implode("\n", $from_lines));
fclose($fp);
$fp = fopen($to_file, 'w');
fwrite($fp, implode("\n", $to_lines));
fclose($fp);
$diff = shell_exec($this->_diffCommand . ' ' . $from_file . ' ' . $to_file);
unlink($from_file);
unlink($to_file);
if (is_null($diff)) {
// No changes were made
return array(new Horde_Text_Diff_Op_Copy($from_lines));
}
$from_line_no = 1;
$to_line_no = 1;
$edits = array();
// Get changed lines by parsing something like:
// 0a1,2
// 1,2c4,6
// 1,5d6
preg_match_all('#^(\d+)(?:,(\d+))?([adc])(\d+)(?:,(\d+))?$#m', $diff,
$matches, PREG_SET_ORDER);
foreach ($matches as $match) {
if (!isset($match[5])) {
// This paren is not set every time (see regex).
$match[5] = false;
}
if ($match[3] == 'a') {
$from_line_no--;
}
if ($match[3] == 'd') {
$to_line_no--;
}
if ($from_line_no < $match[1] || $to_line_no < $match[4]) {
// copied lines
assert($match[1] - $from_line_no == $match[4] - $to_line_no);
$edits[] =
new Horde_Text_Diff_Op_Copy(
$this->_getLines($from_lines, $from_line_no, $match[1] - 1),
$this->_getLines($to_lines, $to_line_no, $match[4] - 1));
}
switch ($match[3]) {
case 'd':
// deleted lines
$edits[] =
new Horde_Text_Diff_Op_Delete(
$this->_getLines($from_lines, $from_line_no, $match[2]));
$to_line_no++;
break;
case 'c':
// changed lines
$edits[] =
new Horde_Text_Diff_Op_Change(
$this->_getLines($from_lines, $from_line_no, $match[2]),
$this->_getLines($to_lines, $to_line_no, $match[5]));
break;
case 'a':
// added lines
$edits[] =
new Horde_Text_Diff_Op_Add(
$this->_getLines($to_lines, $to_line_no, $match[5]));
$from_line_no++;
break;
}
}
if (!empty($from_lines)) {
// Some lines might still be pending. Add them as copied
$edits[] =
new Horde_Text_Diff_Op_Copy(
$this->_getLines($from_lines, $from_line_no,
$from_line_no + count($from_lines) - 1),
$this->_getLines($to_lines, $to_line_no,
$to_line_no + count($to_lines) - 1));
}
return $edits;
}
/**
* Get lines from either the old or new text
*
* @access private
*
* @param array &$text_lines Either $from_lines or $to_lines
* @param int &$line_no Current line number
* @param int $end Optional end line, when we want to chop more
* than one line.
*
* @return array The chopped lines
*/
protected function _getLines(&$text_lines, &$line_no, $end = false)
{
if (!empty($end)) {
$lines = array();
// We can shift even more
while ($line_no <= $end) {
$lines[] = array_shift($text_lines);
$line_no++;
}
} else {
$lines = array(array_shift($text_lines));
$line_no++;
}
return $lines;
}
}

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<?php
/**
* Parses unified or context diffs output from eg. the diff utility.
*
* Example:
* <code>
* $patch = file_get_contents('example.patch');
* $diff = new Horde_Text_Diff('string', array($patch));
* $renderer = new Horde_Text_Diff_Renderer_inline();
* echo $renderer->render($diff);
* </code>
*
* Copyright 2005 Örjan Persson <o@42mm.org>
* Copyright 2005-2017 Horde LLC (http://www.horde.org/)
*
* See the enclosed file COPYING for license information (LGPL). If you did
* not receive this file, see http://www.horde.org/licenses/lgpl21.
*
* @author Örjan Persson <o@42mm.org>
* @package Text_Diff
*/
// Disallow direct access to this file for security reasons
if(!defined("IN_MYBB"))
{
die("Direct initialization of this file is not allowed.<br /><br />Please make sure IN_MYBB is defined.");
}
class Horde_Text_Diff_Engine_String
{
/**
* Parses a unified or context diff.
*
* First param contains the whole diff and the second can be used to force
* a specific diff type. If the second parameter is 'autodetect', the
* diff will be examined to find out which type of diff this is.
*
* @param string $diff The diff content.
* @param string $mode The diff mode of the content in $diff. One of
* 'context', 'unified', or 'autodetect'.
*
* @return array List of all diff operations.
* @throws Horde_Text_Diff_Exception
*/
public function diff($diff, $mode = 'autodetect')
{
// Detect line breaks.
$lnbr = "\n";
if (strpos($diff, "\r\n") !== false) {
$lnbr = "\r\n";
} elseif (strpos($diff, "\r") !== false) {
$lnbr = "\r";
}
// Make sure we have a line break at the EOF.
if (substr($diff, -strlen($lnbr)) != $lnbr) {
$diff .= $lnbr;
}
if ($mode != 'autodetect' && $mode != 'context' && $mode != 'unified') {
throw new Horde_Text_Diff_Exception('Type of diff is unsupported');
}
if ($mode == 'autodetect') {
$context = strpos($diff, '***');
$unified = strpos($diff, '---');
if ($context === $unified) {
throw new Horde_Text_Diff_Exception('Type of diff could not be detected');
} elseif ($context === false || $unified === false) {
$mode = $context !== false ? 'context' : 'unified';
} else {
$mode = $context < $unified ? 'context' : 'unified';
}
}
// Split by new line and remove the diff header, if there is one.
$diff = explode($lnbr, $diff);
if (($mode == 'context' && strpos($diff[0], '***') === 0) ||
($mode == 'unified' && strpos($diff[0], '---') === 0)) {
array_shift($diff);
array_shift($diff);
}
if ($mode == 'context') {
return $this->parseContextDiff($diff);
} else {
return $this->parseUnifiedDiff($diff);
}
}
/**
* Parses an array containing the unified diff.
*
* @param array $diff Array of lines.
*
* @return array List of all diff operations.
*/
public function parseUnifiedDiff($diff)
{
$edits = array();
$end = count($diff) - 1;
for ($i = 0; $i < $end;) {
$diff1 = array();
switch (substr($diff[$i], 0, 1)) {
case ' ':
do {
$diff1[] = substr($diff[$i], 1);
} while (++$i < $end && substr($diff[$i], 0, 1) == ' ');
$edits[] = new Horde_Text_Diff_Op_Copy($diff1);
break;
case '+':
// get all new lines
do {
$diff1[] = substr($diff[$i], 1);
} while (++$i < $end && substr($diff[$i], 0, 1) == '+');
$edits[] = new Horde_Text_Diff_Op_Add($diff1);
break;
case '-':
// get changed or removed lines
$diff2 = array();
do {
$diff1[] = substr($diff[$i], 1);
} while (++$i < $end && substr($diff[$i], 0, 1) == '-');
while ($i < $end && substr($diff[$i], 0, 1) == '+') {
$diff2[] = substr($diff[$i++], 1);
}
if (count($diff2) == 0) {
$edits[] = new Horde_Text_Diff_Op_Delete($diff1);
} else {
$edits[] = new Horde_Text_Diff_Op_Change($diff1, $diff2);
}
break;
default:
$i++;
break;
}
}
return $edits;
}
/**
* Parses an array containing the context diff.
*
* @param array $diff Array of lines.
*
* @return array List of all diff operations.
*/
public function parseContextDiff(&$diff)
{
$edits = array();
$i = $max_i = $j = $max_j = 0;
$end = count($diff) - 1;
while ($i < $end && $j < $end) {
while ($i >= $max_i && $j >= $max_j) {
// Find the boundaries of the diff output of the two files
for ($i = $j;
$i < $end && substr($diff[$i], 0, 3) == '***';
$i++);
for ($max_i = $i;
$max_i < $end && substr($diff[$max_i], 0, 3) != '---';
$max_i++);
for ($j = $max_i;
$j < $end && substr($diff[$j], 0, 3) == '---';
$j++);
for ($max_j = $j;
$max_j < $end && substr($diff[$max_j], 0, 3) != '***';
$max_j++);
}
// find what hasn't been changed
$array = array();
while ($i < $max_i &&
$j < $max_j &&
strcmp($diff[$i], $diff[$j]) == 0) {
$array[] = substr($diff[$i], 2);
$i++;
$j++;
}
while ($i < $max_i && ($max_j-$j) <= 1) {
if ($diff[$i] != '' && substr($diff[$i], 0, 1) != ' ') {
break;
}
$array[] = substr($diff[$i++], 2);
}
while ($j < $max_j && ($max_i-$i) <= 1) {
if ($diff[$j] != '' && substr($diff[$j], 0, 1) != ' ') {
break;
}
$array[] = substr($diff[$j++], 2);
}
if (count($array) > 0) {
$edits[] = new Horde_Text_Diff_Op_Copy($array);
}
if ($i < $max_i) {
$diff1 = array();
switch (substr($diff[$i], 0, 1)) {
case '!':
$diff2 = array();
do {
$diff1[] = substr($diff[$i], 2);
if ($j < $max_j && substr($diff[$j], 0, 1) == '!') {
$diff2[] = substr($diff[$j++], 2);
}
} while (++$i < $max_i && substr($diff[$i], 0, 1) == '!');
$edits[] = new Horde_Text_Diff_Op_Change($diff1, $diff2);
break;
case '+':
do {
$diff1[] = substr($diff[$i], 2);
} while (++$i < $max_i && substr($diff[$i], 0, 1) == '+');
$edits[] = new Horde_Text_Diff_Op_Add($diff1);
break;
case '-':
do {
$diff1[] = substr($diff[$i], 2);
} while (++$i < $max_i && substr($diff[$i], 0, 1) == '-');
$edits[] = new Horde_Text_Diff_Op_Delete($diff1);
break;
}
}
if ($j < $max_j) {
$diff2 = array();
switch (substr($diff[$j], 0, 1)) {
case '+':
do {
$diff2[] = substr($diff[$j++], 2);
} while ($j < $max_j && substr($diff[$j], 0, 1) == '+');
$edits[] = new Horde_Text_Diff_Op_Add($diff2);
break;
case '-':
do {
$diff2[] = substr($diff[$j++], 2);
} while ($j < $max_j && substr($diff[$j], 0, 1) == '-');
$edits[] = new Horde_Text_Diff_Op_Delete($diff2);
break;
}
}
}
return $edits;
}
}

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<?php
/**
* Class used internally by Diff to actually compute the diffs.
*
* This class uses the xdiff PECL package (http://pecl.php.net/package/xdiff)
* to compute the differences between the two input arrays.
*
* Copyright 2004-2017 Horde LLC (http://www.horde.org/)
*
* See the enclosed file COPYING for license information (LGPL). If you did
* not receive this file, see http://www.horde.org/licenses/lgpl21.
*
* @author Jon Parise <jon@horde.org>
* @package Text_Diff
*/
// Disallow direct access to this file for security reasons
if(!defined("IN_MYBB"))
{
die("Direct initialization of this file is not allowed.<br /><br />Please make sure IN_MYBB is defined.");
}
class Horde_Text_Diff_Engine_Xdiff
{
/**
*/
public function diff($from_lines, $to_lines)
{
if (!extension_loaded('xdiff')) {
throw new Horde_Text_Diff_Exception('The xdiff extension is required for this diff engine');
}
array_walk($from_lines, array('Horde_Text_Diff', 'trimNewlines'));
array_walk($to_lines, array('Horde_Text_Diff', 'trimNewlines'));
/* Convert the two input arrays into strings for xdiff processing. */
$from_string = implode("\n", $from_lines);
$to_string = implode("\n", $to_lines);
/* Diff the two strings and convert the result to an array. */
$diff = xdiff_string_diff($from_string, $to_string, count($to_lines));
$diff = explode("\n", $diff);
/* Walk through the diff one line at a time. We build the $edits
* array of diff operations by reading the first character of the
* xdiff output (which is in the "unified diff" format).
*
* Note that we don't have enough information to detect "changed"
* lines using this approach, so we can't add Horde_Text_Diff_Op_Changed
* instances to the $edits array. The result is still perfectly
* valid, albeit a little less descriptive and efficient. */
$edits = array();
foreach ($diff as $line) {
if (!strlen($line)) {
continue;
}
switch ($line[0]) {
case ' ':
$edits[] = new Horde_Text_Diff_Op_Copy(array(substr($line, 1)));
break;
case '+':
$edits[] = new Horde_Text_Diff_Op_Add(array(substr($line, 1)));
break;
case '-':
$edits[] = new Horde_Text_Diff_Op_Delete(array(substr($line, 1)));
break;
}
}
return $edits;
}
}

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<html>
<head>
<title></title>
</head>
<body>
&nbsp;
</body>
</html>

24
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<?php
/**
* Exception handler for the Text_Diff package.
*
* Copyright 2011-2017 Horde LLC (http://www.horde.org/)
*
* See the enclosed file COPYING for license information (LGPL). If you
* did not receive this file, see http://www.horde.org/licenses/lgpl21.
*
* @author Jan Schneider <jan@horde.org>
* @category Horde
* @license http://www.horde.org/licenses/lgpl21 LGPL 2.1
* @package Text_Diff
*/
// Disallow direct access to this file for security reasons
if(!defined("IN_MYBB"))
{
die("Direct initialization of this file is not allowed.<br /><br />Please make sure IN_MYBB is defined.");
}
class Horde_Text_Diff_Exception extends Horde_Exception_Wrapped
{
}

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<?php
/**
* Copyright 2007-2017 Horde LLC (http://www.horde.org/)
*
* See the enclosed file COPYING for license information (LGPL). If you did
* not receive this file, see http://www.horde.org/licenses/lgpl21.
*
* @author Geoffrey T. Dairiki <dairiki@dairiki.org>
* @category Horde
* @license http://www.horde.org/licenses/lgpl21 LGPL-2.1
* @package Text_Diff
*/
/**
* This can be used to compute things like case-insensitve diffs, or diffs
* which ignore changes in white-space.
*
* @author Geoffrey T. Dairiki <dairiki@dairiki.org>
* @category Horde
* @copyright 2007-2017 Horde LLC
* @license http://www.horde.org/licenses/lgpl21 LGPL-2.1
* @package Text_Diff
*/
// Disallow direct access to this file for security reasons
if(!defined("IN_MYBB"))
{
die("Direct initialization of this file is not allowed.<br /><br />Please make sure IN_MYBB is defined.");
}
class Horde_Text_Diff_Mapped extends Horde_Text_Diff
{
/**
* Computes a diff between sequences of strings.
*
* @param string $engine Name of the diffing engine to use. 'auto' will
* automatically select the best.
* @param array $params Parameters to pass to the diffing engine:
* - Two arrays, each containing the lines from a
* file.
* - Two arrays with the same size as the first
* parameters. The elements are what is actually
* compared when computing the diff.
*/
public function __construct($engine, $params)
{
list($from_lines, $to_lines, $mapped_from_lines, $mapped_to_lines) = $params;
assert(count($from_lines) == count($mapped_from_lines));
assert(count($to_lines) == count($mapped_to_lines));
parent::__construct($engine, array($mapped_from_lines, $mapped_to_lines));
$xi = $yi = 0;
for ($i = 0; $i < count($this->_edits); $i++) {
$orig = &$this->_edits[$i]->orig;
if (is_array($orig)) {
$orig = array_slice($from_lines, $xi, count($orig));
$xi += count($orig);
}
$final = &$this->_edits[$i]->final;
if (is_array($final)) {
$final = array_slice($to_lines, $yi, count($final));
$yi += count($final);
}
}
}
}

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<?php
/**
* The original PHP version of this code was written by Geoffrey T. Dairiki
* <dairiki@dairiki.org>, and is used/adapted with his permission.
*
* Copyright 2004 Geoffrey T. Dairiki <dairiki@dairiki.org>
* Copyright 2004-2017 Horde LLC (http://www.horde.org/)
*
* See the enclosed file COPYING for license information (LGPL). If you did
* not receive this file, see http://www.horde.org/licenses/lgpl21.
*
* @package Text_Diff
* @author Geoffrey T. Dairiki <dairiki@dairiki.org>
*/
// Disallow direct access to this file for security reasons
if(!defined("IN_MYBB"))
{
die("Direct initialization of this file is not allowed.<br /><br />Please make sure IN_MYBB is defined.");
}
class Horde_Text_Diff_Op_Add extends Horde_Text_Diff_Op_Base
{
public function __construct($lines)
{
$this->final = $lines;
$this->orig = false;
}
public function reverse()
{
return new Horde_Text_Diff_Op_Delete($this->final);
}
}

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<?php
/**
* The original PHP version of this code was written by Geoffrey T. Dairiki
* <dairiki@dairiki.org>, and is used/adapted with his permission.
*
* Copyright 2004 Geoffrey T. Dairiki <dairiki@dairiki.org>
* Copyright 2004-2017 Horde LLC (http://www.horde.org/)
*
* See the enclosed file COPYING for license information (LGPL). If you did
* not receive this file, see http://www.horde.org/licenses/lgpl21.
*
* @package Text_Diff
* @author Geoffrey T. Dairiki <dairiki@dairiki.org>
*/
// Disallow direct access to this file for security reasons
if(!defined("IN_MYBB"))
{
die("Direct initialization of this file is not allowed.<br /><br />Please make sure IN_MYBB is defined.");
}
abstract class Horde_Text_Diff_Op_Base
{
public $orig;
public $final;
abstract public function reverse();
public function norig()
{
return $this->orig ? count($this->orig) : 0;
}
public function nfinal()
{
return $this->final ? count($this->final) : 0;
}
}

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<?php
/**
* The original PHP version of this code was written by Geoffrey T. Dairiki
* <dairiki@dairiki.org>, and is used/adapted with his permission.
*
* Copyright 2004 Geoffrey T. Dairiki <dairiki@dairiki.org>
* Copyright 2004-2017 Horde LLC (http://www.horde.org/)
*
* See the enclosed file COPYING for license information (LGPL). If you did
* not receive this file, see http://www.horde.org/licenses/lgpl21.
*
* @package Text_Diff
* @author Geoffrey T. Dairiki <dairiki@dairiki.org>
*/
// Disallow direct access to this file for security reasons
if(!defined("IN_MYBB"))
{
die("Direct initialization of this file is not allowed.<br /><br />Please make sure IN_MYBB is defined.");
}
class Horde_Text_Diff_Op_Change extends Horde_Text_Diff_Op_Base
{
public function __construct($orig, $final)
{
$this->orig = $orig;
$this->final = $final;
}
public function reverse()
{
return new Horde_Text_Diff_Op_Change($this->final, $this->orig);
}
}

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webroot/forum/inc/3rdparty/diff/Diff/Op/Copy.php vendored Normal file
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<?php
/**
* The original PHP version of this code was written by Geoffrey T. Dairiki
* <dairiki@dairiki.org>, and is used/adapted with his permission.
*
* Copyright 2004 Geoffrey T. Dairiki <dairiki@dairiki.org>
* Copyright 2004-2017 Horde LLC (http://www.horde.org/)
*
* See the enclosed file COPYING for license information (LGPL). If you did
* not receive this file, see http://www.horde.org/licenses/lgpl21.
*
* @package Text_Diff
* @author Geoffrey T. Dairiki <dairiki@dairiki.org>
*/
// Disallow direct access to this file for security reasons
if(!defined("IN_MYBB"))
{
die("Direct initialization of this file is not allowed.<br /><br />Please make sure IN_MYBB is defined.");
}
class Horde_Text_Diff_Op_Copy extends Horde_Text_Diff_Op_Base
{
public function __construct($orig, $final = false)
{
if (!is_array($final)) {
$final = $orig;
}
$this->orig = $orig;
$this->final = $final;
}
public function reverse()
{
return new Horde_Text_Diff_Op_Copy($this->final, $this->orig);
}
}

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<?php
/**
* The original PHP version of this code was written by Geoffrey T. Dairiki
* <dairiki@dairiki.org>, and is used/adapted with his permission.
*
* Copyright 2004 Geoffrey T. Dairiki <dairiki@dairiki.org>
* Copyright 2004-2017 Horde LLC (http://www.horde.org/)
*
* See the enclosed file COPYING for license information (LGPL). If you did
* not receive this file, see http://www.horde.org/licenses/lgpl21.
*
* @package Text_Diff
* @author Geoffrey T. Dairiki <dairiki@dairiki.org>
*/
// Disallow direct access to this file for security reasons
if(!defined("IN_MYBB"))
{
die("Direct initialization of this file is not allowed.<br /><br />Please make sure IN_MYBB is defined.");
}
class Horde_Text_Diff_Op_Delete extends Horde_Text_Diff_Op_Base
{
public function __construct($lines)
{
$this->orig = $lines;
$this->final = false;
}
public function reverse()
{
return new Horde_Text_Diff_Op_Add($this->orig);
}
}

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<html>
<head>
<title></title>
</head>
<body>
&nbsp;
</body>
</html>

241
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<?php
/**
* 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 2004-2017 Horde LLC (http://www.horde.org/)
*
* See the enclosed file COPYING for license information (LGPL). If you did
* not receive this file, see http://www.horde.org/licenses/lgpl21.
*
* @package Text_Diff
*/
// Disallow direct access to this file for security reasons
if(!defined("IN_MYBB"))
{
die("Direct initialization of this file is not allowed.<br /><br />Please make sure IN_MYBB is defined.");
}
class Horde_Text_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.
*/
protected $_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.
*/
protected $_trailing_context_lines = 0;
/**
* Constructor.
*/
public function __construct($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.
*/
public function getParams()
{
$params = array();
foreach (get_object_vars($this) as $k => $v) {
if ($k[0] == '_') {
$params[substr($k, 1)] = $v;
}
}
return $params;
}
/**
* Renders a diff.
*
* @param Horde_Text_Diff $diff A Horde_Text_Diff object.
*
* @return string The formatted output.
*/
public function render($diff)
{
$xi = $yi = 1;
$block = false;
$context = array();
$nlead = $this->_leading_context_lines;
$ntrail = $this->_trailing_context_lines;
$output = $this->_startDiff();
$diffs = $diff->getDiff();
foreach ($diffs as $i => $edit) {
/* If these are unchanged (copied) lines, and we want to keep
* leading or trailing context lines, extract them from the copy
* block. */
if ($edit instanceof Horde_Text_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);
$block[] = new Horde_Text_Diff_Op_Copy($context);
}
/* @todo */
$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) {
$block[] = new Horde_Text_Diff_Op_Copy($context);
}
}
$block[] = $edit;
}
if ($edit->orig) {
$xi += count($edit->orig);
}
if ($edit->final) {
$yi += count($edit->final);
}
}
if (is_array($block)) {
$output .= $this->_block($x0, $xi - $x0,
$y0, $yi - $y0,
$block);
}
return $output . $this->_endDiff();
}
protected function _block($xbeg, $xlen, $ybeg, $ylen, &$edits)
{
$output = $this->_startBlock($this->_blockHeader($xbeg, $xlen, $ybeg, $ylen));
foreach ($edits as $edit) {
switch (get_class($edit)) {
case 'Horde_Text_Diff_Op_Copy':
$output .= $this->_context($edit->orig);
break;
case 'Horde_Text_Diff_Op_Add':
$output .= $this->_added($edit->final);
break;
case 'Horde_Text_Diff_Op_Delete':
$output .= $this->_deleted($edit->orig);
break;
case 'Horde_Text_Diff_Op_Change':
$output .= $this->_changed($edit->orig, $edit->final);
break;
}
}
return $output . $this->_endBlock();
}
protected function _startDiff()
{
return '';
}
protected function _endDiff()
{
return '';
}
protected function _blockHeader($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) {
$ybeg--;
} elseif (!$xlen) {
$xbeg--;
}
return $xbeg . ($xlen ? ($ylen ? 'c' : 'd') : 'a') . $ybeg;
}
protected function _startBlock($header)
{
return $header . "\n";
}
protected function _endBlock()
{
return '';
}
protected function _lines($lines, $prefix = ' ')
{
return $prefix . implode("\n$prefix", $lines) . "\n";
}
protected function _context($lines)
{
return $this->_lines($lines, ' ');
}
protected function _added($lines)
{
return $this->_lines($lines, '> ');
}
protected function _deleted($lines)
{
return $this->_lines($lines, '< ');
}
protected function _changed($orig, $final)
{
return $this->_deleted($orig) . "---\n" . $this->_added($final);
}
}

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<?php
/**
* "Context" diff renderer.
*
* This class renders the diff in classic "context diff" format.
*
* Copyright 2004-2017 Horde LLC (http://www.horde.org/)
*
* See the enclosed file COPYING for license information (LGPL). If you did
* not receive this file, see http://www.horde.org/licenses/lgpl21.
*
* @package Text_Diff
*/
// Disallow direct access to this file for security reasons
if(!defined("IN_MYBB"))
{
die("Direct initialization of this file is not allowed.<br /><br />Please make sure IN_MYBB is defined.");
}
class Horde_Text_Diff_Renderer_Context extends Horde_Text_Diff_Renderer
{
/**
* Number of leading context "lines" to preserve.
*/
protected $_leading_context_lines = 4;
/**
* Number of trailing context "lines" to preserve.
*/
protected $_trailing_context_lines = 4;
protected $_second_block = '';
protected function _blockHeader($xbeg, $xlen, $ybeg, $ylen)
{
if ($xlen != 1) {
$xbeg .= ',' . $xlen;
}
if ($ylen != 1) {
$ybeg .= ',' . $ylen;
}
$this->_second_block = "--- $ybeg ----\n";
return "***************\n*** $xbeg ****";
}
protected function _endBlock()
{
return $this->_second_block;
}
protected function _context($lines)
{
$this->_second_block .= $this->_lines($lines, ' ');
return $this->_lines($lines, ' ');
}
protected function _added($lines)
{
$this->_second_block .= $this->_lines($lines, '+ ');
return '';
}
protected function _deleted($lines)
{
return $this->_lines($lines, '- ');
}
protected function _changed($orig, $final)
{
$this->_second_block .= $this->_lines($final, '! ');
return $this->_lines($orig, '! ');
}
}

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<?php
/**
* "Inline" diff renderer.
*
* This class renders diffs in the Wiki-style "inline" format.
*
* Copyright 2004-2017 Horde LLC (http://www.horde.org/)
*
* See the enclosed file COPYING for license information (LGPL). If you did
* not receive this file, see http://www.horde.org/licenses/lgpl21.
*
* @author Ciprian Popovici
* @package Text_Diff
*/
// Disallow direct access to this file for security reasons
if(!defined("IN_MYBB"))
{
die("Direct initialization of this file is not allowed.<br /><br />Please make sure IN_MYBB is defined.");
}
class Horde_Text_Diff_Renderer_Inline extends Horde_Text_Diff_Renderer
{
/**
* Number of leading context "lines" to preserve.
*
* @var integer
*/
protected $_leading_context_lines = 10000;
/**
* Number of trailing context "lines" to preserve.
*
* @var integer
*/
protected $_trailing_context_lines = 10000;
/**
* Prefix for inserted text.
*
* @var string
*/
protected $_ins_prefix = '<ins>';
/**
* Suffix for inserted text.
*
* @var string
*/
protected $_ins_suffix = '</ins>';
/**
* Prefix for deleted text.
*
* @var string
*/
protected $_del_prefix = '<del>';
/**
* Suffix for deleted text.
*
* @var string
*/
protected $_del_suffix = '</del>';
/**
* Header for each change block.
*
* @var string
*/
protected $_block_header = '';
/**
* Whether to split down to character-level.
*
* @var boolean
*/
protected $_split_characters = false;
/**
* What are we currently splitting on? Used to recurse to show word-level
* or character-level changes.
*
* @var string
*/
protected $_split_level = 'lines';
protected function _blockHeader($xbeg, $xlen, $ybeg, $ylen)
{
return $this->_block_header;
}
protected function _startBlock($header)
{
return $header;
}
protected function _lines($lines, $prefix = ' ', $encode = true)
{
if ($encode) {
array_walk($lines, array(&$this, '_encode'));
}
if ($this->_split_level == 'lines') {
return implode("\n", $lines) . "\n";
} else {
return implode('', $lines);
}
}
protected function _added($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);
}
protected 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);
}
protected function _changed($orig, $final)
{
/* If we've already split on characters, just display. */
if ($this->_split_level == 'characters') {
return $this->_deleted($orig)
. $this->_added($final);
}
/* If we've already split on words, 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. */
$nl = "\0";
if ($this->_split_characters) {
$diff = new Horde_Text_Diff('native',
array(preg_split('//u', str_replace("\n", $nl, $text1)),
preg_split('//u', str_replace("\n", $nl, $text2))));
} else {
/* 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. */
$diff = new Horde_Text_Diff('native',
array($this->_splitOnWords($text1, $nl),
$this->_splitOnWords($text2, $nl)));
}
/* Get the diff in inline format. */
$renderer = new Horde_Text_Diff_Renderer_inline
(array_merge($this->getParams(),
array('split_level' => $this->_split_characters ? 'characters' : 'words')));
/* Run the diff and get the output. */
return str_replace($nl, "\n", $renderer->render($diff)) . "\n";
}
protected function _splitOnWords($string, $newlineEscape = "\n")
{
// Ignore \0; otherwise the while loop will never finish.
$string = str_replace("\0", '', $string);
$words = array();
$length = strlen($string);
$pos = 0;
while ($pos < $length) {
// Eat a word with any preceding whitespace.
$spaces = strspn(substr($string, $pos), " \n");
$nextpos = strcspn(substr($string, $pos + $spaces), " \n");
$words[] = str_replace("\n", $newlineEscape, substr($string, $pos, $spaces + $nextpos));
$pos += $spaces + $nextpos;
}
return $words;
}
protected function _encode(&$string)
{
$string = htmlspecialchars($string);
}
}

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<?php
/**
* "Unified" diff renderer.
*
* This class renders the diff in classic "unified diff" format.
*
* Copyright 2004-2017 Horde LLC (http://www.horde.org/)
*
* See the enclosed file COPYING for license information (LGPL). If you did
* not receive this file, see http://www.horde.org/licenses/lgpl21.
*
* @author Ciprian Popovici
* @package Text_Diff
*/
// Disallow direct access to this file for security reasons
if(!defined("IN_MYBB"))
{
die("Direct initialization of this file is not allowed.<br /><br />Please make sure IN_MYBB is defined.");
}
class Horde_Text_Diff_Renderer_Unified extends Horde_Text_Diff_Renderer
{
/**
* Number of leading context "lines" to preserve.
*/
protected $_leading_context_lines = 4;
/**
* Number of trailing context "lines" to preserve.
*/
protected $_trailing_context_lines = 4;
protected function _blockHeader($xbeg, $xlen, $ybeg, $ylen)
{
if ($xlen != 1) {
$xbeg .= ',' . $xlen;
}
if ($ylen != 1) {
$ybeg .= ',' . $ylen;
}
return "@@ -$xbeg +$ybeg @@";
}
protected function _context($lines)
{
return $this->_lines($lines, ' ');
}
protected function _added($lines)
{
return $this->_lines($lines, '+');
}
protected function _deleted($lines)
{
return $this->_lines($lines, '-');
}
protected function _changed($orig, $final)
{
return $this->_deleted($orig) . $this->_added($final);
}
}

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<?php
/**
* Copyright 2017 Horde LLC (http://www.horde.org/)
*
* See the enclosed file COPYING for license information (LGPL). If you did
* not receive this file, see http://www.horde.org/licenses/lgpl21.
*
* @author Jan Schneider <jan@horde.org>
* @category Horde
* @license http://www.horde.org/licenses/lgpl21 LGPL
* @package Text_Diff
*/
/**
* "Unified" diff renderer with output coloring.
*
* @author Jan Schneider <jan@horde.org>
* @category Horde
* @copyright 2017 Horde LLC
* @license http://www.horde.org/licenses/lgpl21 LGPL
* @package Text_Diff
*/
// Disallow direct access to this file for security reasons
if(!defined("IN_MYBB"))
{
die("Direct initialization of this file is not allowed.<br /><br />Please make sure IN_MYBB is defined.");
}
class Horde_Text_Diff_Renderer_Unified_Colored
extends Horde_Text_Diff_Renderer_Unified
{
/**
* CLI handler.
*
* Contrary to the name, it supports color highlighting for HTML too.
*
* @var Horde_Cli
*/
protected $_cli;
/**
* Constructor.
*/
public function __construct($params = array())
{
if (!isset($params['cli'])) {
throw new BadMethodCallException('CLI handler is missing');
}
parent::__construct($params);
$this->_cli = $params['cli'];
}
protected function _blockHeader($xbeg, $xlen, $ybeg, $ylen)
{
return $this->_cli->color(
'lightmagenta', parent::_blockHeader($xbeg, $xlen, $ybeg, $ylen)
);
}
protected function _added($lines)
{
return $this->_cli->color(
'lightgreen', parent::_added($lines)
);
}
protected function _deleted($lines)
{
return $this->_cli->color(
'lightred', parent::_deleted($lines)
);
}
}

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<html>
<head>
<title></title>
</head>
<body>
&nbsp;
</body>
</html>

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<?php
/**
* The Horde_String:: class provides static methods for charset and locale
* safe string manipulation.
*
* Copyright 2003-2012 Horde LLC (http://www.horde.org/)
*
* See the enclosed file COPYING for license information (LGPL). If you
* did not receive this file, see http://www.horde.org/licenses/lgpl21.
*
* @author Jan Schneider <jan@horde.org>
* @category Horde
* @license http://www.horde.org/licenses/lgpl21 LGPL 2.1
* @package Util
*/
// Disallow direct access to this file for security reasons
if(!defined("IN_MYBB"))
{
die("Direct initialization of this file is not allowed.<br /><br />Please make sure IN_MYBB is defined.");
}
class Horde_String
{
/**
* lower() cache.
*
* @var array
*/
static protected $_lowers = array();
/**
* upper() cache.
*
* @var array
*/
static protected $_uppers = array();
/**
* Converts a string from one charset to another.
*
* Uses the iconv or the mbstring extensions.
* The original string is returned if conversion failed or none
* of the extensions were available.
*
* @param mixed $input The data to be converted. If $input is an an
* array, the array's values get converted
* recursively.
* @param string $from The string's current charset.
* @param string $to The charset to convert the string to.
* @param boolean $force Force conversion?
*
* @return mixed The converted input data.
*/
static public function convertCharset($input, $from, $to, $force = false)
{
/* Don't bother converting numbers. */
if (is_numeric($input)) {
return $input;
}
/* If the from and to character sets are identical, return now. */
if (!$force && $from == $to) {
return $input;
}
$from = self::lower($from);
$to = self::lower($to);
if (!$force && $from == $to) {
return $input;
}
if (is_array($input)) {
$tmp = array();
reset($input);
while (list($key, $val) = each($input)) {
$tmp[self::_convertCharset($key, $from, $to)] = self::convertCharset($val, $from, $to, $force);
}
return $tmp;
}
if (is_object($input)) {
// PEAR_Error/Exception objects are almost guaranteed to contain
// recursion, which will cause a segfault in PHP. We should never
// reach this line, but add a check.
if (($input instanceof Exception) ||
($input instanceof PEAR_Error)) {
return '';
}
$input = Horde_Util::cloneObject($input);
$vars = get_object_vars($input);
while (list($key, $val) = each($vars)) {
$input->$key = self::convertCharset($val, $from, $to, $force);
}
return $input;
}
if (!is_string($input)) {
return $input;
}
return self::_convertCharset($input, $from, $to);
}
/**
* Internal function used to do charset conversion.
*
* @param string $input See self::convertCharset().
* @param string $from See self::convertCharset().
* @param string $to See self::convertCharset().
*
* @return string The converted string.
*/
static protected function _convertCharset($input, $from, $to)
{
/* Use utf8_[en|de]code() if possible and if the string isn't too
* large (less than 16 MB = 16 * 1024 * 1024 = 16777216 bytes) - these
* functions use more memory. */
if (Horde_Util::extensionExists('xml') &&
((strlen($input) < 16777216) ||
!Horde_Util::extensionExists('iconv') ||
!Horde_Util::extensionExists('mbstring'))) {
if (($to == 'utf-8') &&
in_array($from, array('iso-8859-1', 'us-ascii', 'utf-8'))) {
return utf8_encode($input);
}
if (($from == 'utf-8') &&
in_array($to, array('iso-8859-1', 'us-ascii', 'utf-8'))) {
return utf8_decode($input);
}
}
/* Try UTF7-IMAP conversions. */
if (($from == 'utf7-imap') || ($to == 'utf7-imap')) {
try {
if ($from == 'utf7-imap') {
return self::convertCharset(Horde_Imap_Client_Utf7imap::Utf7ImapToUtf8($input), 'UTF-8', $to);
} else {
if ($from == 'utf-8') {
$conv = $input;
} else {
$conv = self::convertCharset($input, $from, 'UTF-8');
}
return Horde_Imap_Client_Utf7imap::Utf8ToUtf7Imap($conv);
}
} catch (Horde_Imap_Client_Exception $e) {
return $input;
}
}
/* Try iconv with transliteration. */
if (Horde_Util::extensionExists('iconv')) {
unset($php_errormsg);
ini_set('track_errors', 1);
$out = @iconv($from, $to . '//TRANSLIT', $input);
$errmsg = isset($php_errormsg);
ini_restore('track_errors');
if (!$errmsg) {
return $out;
}
}
/* Try mbstring. */
if (Horde_Util::extensionExists('mbstring')) {
$out = @mb_convert_encoding($input, $to, self::_mbstringCharset($from));
if (!empty($out)) {
return $out;
}
}
return $input;
}
/**
* Makes a string lowercase.
*
* @param string $string The string to be converted.
* @param boolean $locale If true the string will be converted based on
* a given charset, locale independent else.
* @param string $charset If $locale is true, the charset to use when
* converting.
*
* @return string The string with lowercase characters.
*/
static public function lower($string, $locale = false, $charset = null)
{
if ($locale) {
if (Horde_Util::extensionExists('mbstring')) {
if (is_null($charset)) {
throw new InvalidArgumentException('$charset argument must not be null');
}
$ret = @mb_strtolower($string, self::_mbstringCharset($charset));
if (!empty($ret)) {
return $ret;
}
}
return strtolower($string);
}
if (!isset(self::$_lowers[$string])) {
$language = setlocale(LC_CTYPE, 0);
setlocale(LC_CTYPE, 'C');
self::$_lowers[$string] = strtolower($string);
setlocale(LC_CTYPE, $language);
}
return self::$_lowers[$string];
}
/**
* Makes a string uppercase.
*
* @param string $string The string to be converted.
* @param boolean $locale If true the string will be converted based on a
* given charset, locale independent else.
* @param string $charset If $locale is true, the charset to use when
* converting. If not provided the current charset.
*
* @return string The string with uppercase characters.
*/
static public function upper($string, $locale = false, $charset = null)
{
if ($locale) {
if (Horde_Util::extensionExists('mbstring')) {
if (is_null($charset)) {
throw new InvalidArgumentException('$charset argument must not be null');
}
$ret = @mb_strtoupper($string, self::_mbstringCharset($charset));
if (!empty($ret)) {
return $ret;
}
}
return strtoupper($string);
}
if (!isset(self::$_uppers[$string])) {
$language = setlocale(LC_CTYPE, 0);
setlocale(LC_CTYPE, 'C');
self::$_uppers[$string] = strtoupper($string);
setlocale(LC_CTYPE, $language);
}
return self::$_uppers[$string];
}
/**
* Returns a string with the first letter capitalized if it is
* alphabetic.
*
* @param string $string The string to be capitalized.
* @param boolean $locale If true the string will be converted based on a
* given charset, locale independent else.
* @param string $charset The charset to use, defaults to current charset.
*
* @return string The capitalized string.
*/
static public function ucfirst($string, $locale = false, $charset = null)
{
if ($locale) {
if (is_null($charset)) {
throw new InvalidArgumentException('$charset argument must not be null');
}
$first = self::substr($string, 0, 1, $charset);
if (self::isAlpha($first, $charset)) {
$string = self::upper($first, true, $charset) . self::substr($string, 1, null, $charset);
}
} else {
$string = self::upper(substr($string, 0, 1), false) . substr($string, 1);
}
return $string;
}
/**
* Returns a string with the first letter of each word capitalized if it is
* alphabetic.
*
* Sentences are splitted into words at whitestrings.
*
* @param string $string The string to be capitalized.
* @param boolean $locale If true the string will be converted based on a
* given charset, locale independent else.
* @param string $charset The charset to use, defaults to current charset.
*
* @return string The capitalized string.
*/
static public function ucwords($string, $locale = false, $charset = null)
{
$words = preg_split('/(\s+)/', $string, -1, PREG_SPLIT_DELIM_CAPTURE);
for ($i = 0, $c = count($words); $i < $c; $i += 2) {
$words[$i] = self::ucfirst($words[$i], $locale, $charset);
}
return implode('', $words);
}
/**
* Returns part of a string.
*
* @param string $string The string to be converted.
* @param integer $start The part's start position, zero based.
* @param integer $length The part's length.
* @param string $charset The charset to use when calculating the part's
* position and length, defaults to current
* charset.
*
* @return string The string's part.
*/
static public function substr($string, $start, $length = null,
$charset = 'UTF-8')
{
if (is_null($length)) {
$length = self::length($string, $charset) - $start;
}
if ($length == 0) {
return '';
}
/* Try mbstring. */
if (Horde_Util::extensionExists('mbstring')) {
$ret = @mb_substr($string, $start, $length, self::_mbstringCharset($charset));
/* mb_substr() returns empty string on failure. */
if (strlen($ret)) {
return $ret;
}
}
/* Try iconv. */
if (Horde_Util::extensionExists('iconv')) {
$ret = @iconv_substr($string, $start, $length, $charset);
/* iconv_substr() returns false on failure. */
if ($ret !== false) {
return $ret;
}
}
return substr($string, $start, $length);
}
/**
* Returns the character (not byte) length of a string.
*
* @param string $string The string to return the length of.
* @param string $charset The charset to use when calculating the string's
* length.
*
* @return integer The string's length.
*/
static public function length($string, $charset = 'UTF-8')
{
$charset = self::lower($charset);
if ($charset == 'utf-8' || $charset == 'utf8') {
return strlen(utf8_decode($string));
}
if (Horde_Util::extensionExists('mbstring')) {
$ret = @mb_strlen($string, self::_mbstringCharset($charset));
if (!empty($ret)) {
return $ret;
}
}
return strlen($string);
}
/**
* Returns the numeric position of the first occurrence of $needle
* in the $haystack string.
*
* @param string $haystack The string to search through.
* @param string $needle The string to search for.
* @param integer $offset Allows to specify which character in haystack
* to start searching.
* @param string $charset The charset to use when searching for the
* $needle string.
*
* @return integer The position of first occurrence.
*/
static public function pos($haystack, $needle, $offset = 0,
$charset = 'UTF-8')
{
if (Horde_Util::extensionExists('mbstring')) {
$track_errors = ini_set('track_errors', 1);
$ret = @mb_strpos($haystack, $needle, $offset, self::_mbstringCharset($charset));
ini_set('track_errors', $track_errors);
if (!isset($php_errormsg)) {
return $ret;
}
}
return strpos($haystack, $needle, $offset);
}
/**
* Returns the numeric position of the last occurrence of $needle
* in the $haystack string.
*
* @param string $haystack The string to search through.
* @param string $needle The string to search for.
* @param integer $offset Allows to specify which character in haystack
* to start searching.
* @param string $charset The charset to use when searching for the
* $needle string.
*
* @return integer The position of first occurrence.
*/
static public function rpos($haystack, $needle, $offset = 0,
$charset = 'UTF-8')
{
if (Horde_Util::extensionExists('mbstring')) {
$track_errors = ini_set('track_errors', 1);
$ret = @mb_strrpos($haystack, $needle, $offset, self::_mbstringCharset($charset));
ini_set('track_errors', $track_errors);
if (!isset($php_errormsg)) {
return $ret;
}
}
return strrpos($haystack, $needle, $offset);
}
/**
* Returns a string padded to a certain length with another string.
* This method behaves exactly like str_pad() but is multibyte safe.
*
* @param string $input The string to be padded.
* @param integer $length The length of the resulting string.
* @param string $pad The string to pad the input string with. Must
* be in the same charset like the input string.
* @param const $type The padding type. One of STR_PAD_LEFT,
* STR_PAD_RIGHT, or STR_PAD_BOTH.
* @param string $charset The charset of the input and the padding
* strings.
*
* @return string The padded string.
*/
static public function pad($input, $length, $pad = ' ',
$type = STR_PAD_RIGHT, $charset = 'UTF-8')
{
$mb_length = self::length($input, $charset);
$sb_length = strlen($input);
$pad_length = self::length($pad, $charset);
/* Return if we already have the length. */
if ($mb_length >= $length) {
return $input;
}
/* Shortcut for single byte strings. */
if ($mb_length == $sb_length && $pad_length == strlen($pad)) {
return str_pad($input, $length, $pad, $type);
}
switch ($type) {
case STR_PAD_LEFT:
$left = $length - $mb_length;
$output = self::substr(str_repeat($pad, ceil($left / $pad_length)), 0, $left, $charset) . $input;
break;
case STR_PAD_BOTH:
$left = floor(($length - $mb_length) / 2);
$right = ceil(($length - $mb_length) / 2);
$output = self::substr(str_repeat($pad, ceil($left / $pad_length)), 0, $left, $charset) .
$input .
self::substr(str_repeat($pad, ceil($right / $pad_length)), 0, $right, $charset);
break;
case STR_PAD_RIGHT:
$right = $length - $mb_length;
$output = $input . self::substr(str_repeat($pad, ceil($right / $pad_length)), 0, $right, $charset);
break;
}
return $output;
}
/**
* Wraps the text of a message.
*
* @param string $string String containing the text to wrap.
* @param integer $width Wrap the string at this number of
* characters.
* @param string $break Character(s) to use when breaking lines.
* @param boolean $cut Whether to cut inside words if a line
* can't be wrapped.
* @param boolean $line_folding Whether to apply line folding rules per
* RFC 822 or similar. The correct break
* characters including leading whitespace
* have to be specified too.
*
* @return string String containing the wrapped text.
*/
static public function wordwrap($string, $width = 75, $break = "\n",
$cut = false, $line_folding = false)
{
$wrapped = '';
while (self::length($string, 'UTF-8') > $width) {
$line = self::substr($string, 0, $width, 'UTF-8');
$string = self::substr($string, self::length($line, 'UTF-8'), null, 'UTF-8');
// Make sure we didn't cut a word, unless we want hard breaks
// anyway.
if (!$cut && preg_match('/^(.+?)((\s|\r?\n).*)/us', $string, $match)) {
$line .= $match[1];
$string = $match[2];
}
// Wrap at existing line breaks.
if (preg_match('/^(.*?)(\r?\n)(.*)$/su', $line, $match)) {
$wrapped .= $match[1] . $match[2];
$string = $match[3] . $string;
continue;
}
// Wrap at the last colon or semicolon followed by a whitespace if
// doing line folding.
if ($line_folding &&
preg_match('/^(.*?)(;|:)(\s+.*)$/u', $line, $match)) {
$wrapped .= $match[1] . $match[2] . $break;
$string = $match[3] . $string;
continue;
}
// Wrap at the last whitespace of $line.
$sub = $line_folding
? '(.+[^\s])'
: '(.*)';
if (preg_match('/^' . $sub . '(\s+)(.*)$/u', $line, $match)) {
$wrapped .= $match[1] . $break;
$string = ($line_folding ? $match[2] : '') . $match[3] . $string;
continue;
}
// Hard wrap if necessary.
if ($cut) {
$wrapped .= $line . $break;
continue;
}
$wrapped .= $line;
}
return $wrapped . $string;
}
/**
* Wraps the text of a message.
*
* @param string $text String containing the text to wrap.
* @param integer $length Wrap $text at this number of characters.
* @param string $break_char Character(s) to use when breaking lines.
* @param boolean $quote Ignore lines that are wrapped with the '>'
* character (RFC 2646)? If true, we don't
* remove any padding whitespace at the end of
* the string.
*
* @return string String containing the wrapped text.
*/
static public function wrap($text, $length = 80, $break_char = "\n",
$quote = false)
{
$paragraphs = array();
foreach (preg_split('/\r?\n/', $text) as $input) {
if ($quote && (strpos($input, '>') === 0)) {
$line = $input;
} else {
/* We need to handle the Usenet-style signature line
* separately; since the space after the two dashes is
* REQUIRED, we don't want to trim the line. */
if ($input != '-- ') {
$input = rtrim($input);
}
$line = self::wordwrap($input, $length, $break_char);
}
$paragraphs[] = $line;
}
return implode($break_char, $paragraphs);
}
/**
* Return a truncated string, suitable for notifications.
*
* @param string $text The original string.
* @param integer $length The maximum length.
*
* @return string The truncated string, if longer than $length.
*/
static public function truncate($text, $length = 100)
{
return (self::length($text) > $length)
? rtrim(self::substr($text, 0, $length - 3)) . '...'
: $text;
}
/**
* Return an abbreviated string, with characters in the middle of the
* excessively long string replaced by '...'.
*
* @param string $text The original string.
* @param integer $length The length at which to abbreviate.
*
* @return string The abbreviated string, if longer than $length.
*/
static public function abbreviate($text, $length = 20)
{
return (self::length($text) > $length)
? rtrim(self::substr($text, 0, round(($length - 3) / 2))) . '...' . ltrim(self::substr($text, (($length - 3) / 2) * -1))
: $text;
}
/**
* Returns the common leading part of two strings.
*
* @param string $str1 A string.
* @param string $str2 Another string.
*
* @return string The start of $str1 and $str2 that is identical in both.
*/
static public function common($str1, $str2)
{
for ($result = '', $i = 0;
isset($str1[$i]) && isset($str2[$i]) && $str1[$i] == $str2[$i];
$i++) {
$result .= $str1[$i];
}
return $result;
}
/**
* Returns true if the every character in the parameter is an alphabetic
* character.
*
* @param string $string The string to test.
* @param string $charset The charset to use when testing the string.
*
* @return boolean True if the parameter was alphabetic only.
*/
static public function isAlpha($string, $charset)
{
if (!Horde_Util::extensionExists('mbstring')) {
return ctype_alpha($string);
}
$charset = self::_mbstringCharset($charset);
$old_charset = mb_regex_encoding();
if ($charset != $old_charset) {
@mb_regex_encoding($charset);
}
$alpha = !@mb_ereg_match('[^[:alpha:]]', $string);
if ($charset != $old_charset) {
@mb_regex_encoding($old_charset);
}
return $alpha;
}
/**
* Returns true if ever character in the parameter is a lowercase letter in
* the current locale.
*
* @param string $string The string to test.
* @param string $charset The charset to use when testing the string.
*
* @return boolean True if the parameter was lowercase.
*/
static public function isLower($string, $charset)
{
return ((self::lower($string, true, $charset) === $string) &&
self::isAlpha($string, $charset));
}
/**
* Returns true if every character in the parameter is an uppercase letter
* in the current locale.
*
* @param string $string The string to test.
* @param string $charset The charset to use when testing the string.
*
* @return boolean True if the parameter was uppercase.
*/
static public function isUpper($string, $charset)
{
return ((self::upper($string, true, $charset) === $string) &&
self::isAlpha($string, $charset));
}
/**
* Performs a multibyte safe regex match search on the text provided.
*
* @param string $text The text to search.
* @param array $regex The regular expressions to use, without perl
* regex delimiters (e.g. '/' or '|').
* @param string $charset The character set of the text.
*
* @return array The matches array from the first regex that matches.
*/
static public function regexMatch($text, $regex, $charset = null)
{
if (!empty($charset)) {
$regex = self::convertCharset($regex, $charset, 'utf-8');
$text = self::convertCharset($text, $charset, 'utf-8');
}
$matches = array();
foreach ($regex as $val) {
if (preg_match('/' . $val . '/u', $text, $matches)) {
break;
}
}
if (!empty($charset)) {
$matches = self::convertCharset($matches, 'utf-8', $charset);
}
return $matches;
}
/**
* Check to see if a string is valid UTF-8.
*
* @since 1.1.0
*
* @param string $text The text to check.
*
* @return boolean True if valid UTF-8.
*/
static public function validUtf8($text)
{
/* Regex from:
* http://stackoverflow.com/questions/1523460/ensuring-valid-utf-8-in-php
*/
return preg_match('/^(?:
[\x09\x0A\x0D\x20-\x7E] # ASCII
| [\xC2-\xDF][\x80-\xBF] # non-overlong 2-byte
| \xE0[\xA0-\xBF][\x80-\xBF] # excluding overlongs
| [\xE1-\xEC\xEE\xEF][\x80-\xBF]{2} # straight 3-byte
| \xED[\x80-\x9F][\x80-\xBF] # excluding surrogates
| \xF0[\x90-\xBF][\x80-\xBF]{2} # planes 1-3
| [\xF1-\xF3][\x80-\xBF]{3} # planes 4-15
| \xF4[\x80-\x8F][\x80-\xBF]{2} # plane 16
)*$/xs', $text);
}
/**
* Workaround charsets that don't work with mbstring functions.
*
* @param string $charset The original charset.
*
* @return string The charset to use with mbstring functions.
*/
static protected function _mbstringCharset($charset)
{
/* mbstring functions do not handle the 'ks_c_5601-1987' &
* 'ks_c_5601-1989' charsets. However, these charsets are used, for
* example, by various versions of Outlook to send Korean characters.
* Use UHC (CP949) encoding instead. See, e.g.,
* http://lists.w3.org/Archives/Public/ietf-charsets/2001AprJun/0030.html */
if ($charset == 'UTF-8' || $charset == 'utf-8') {
return $charset;
}
if (in_array(self::lower($charset), array('ks_c_5601-1987', 'ks_c_5601-1989'))) {
$charset = 'UHC';
}
return $charset;
}
}

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<?php
/**
* A class for computing three way merges.
*
* Copyright 2007-2017 Horde LLC (http://www.horde.org/)
*
* See the enclosed file COPYING for license information (LGPL). If you did
* not receive this file, see http://www.horde.org/licenses/lgpl21.
*
* @package Text_Diff
* @author Geoffrey T. Dairiki <dairiki@dairiki.org>
*/
// Disallow direct access to this file for security reasons
if(!defined("IN_MYBB"))
{
die("Direct initialization of this file is not allowed.<br /><br />Please make sure IN_MYBB is defined.");
}
class Horde_Text_Diff_ThreeWay
{
/**
* Array of changes.
*
* @var array
*/
protected $_edits;
/**
* Conflict counter.
*
* @var integer
*/
protected $_conflictingBlocks = 0;
/**
* Computes diff between 3 sequences of strings.
*
* @param array $orig The original lines to use.
* @param array $final1 The first version to compare to.
* @param array $final2 The second version to compare to.
*/
public function __construct($orig, $final1, $final2)
{
if (extension_loaded('xdiff')) {
$engine = new Horde_Text_Diff_Engine_Xdiff();
} else {
$engine = new Horde_Text_Diff_Engine_Native();
}
$this->_edits = $this->_diff3($engine->diff($orig, $final1),
$engine->diff($orig, $final2));
}
/**
*/
public function mergedOutput($label1 = false, $label2 = false)
{
$lines = array();
foreach ($this->_edits as $edit) {
if ($edit->isConflict()) {
/* FIXME: this should probably be moved somewhere else. */
$lines = array_merge($lines,
array('<<<<<<<' . ($label1 ? ' ' . $label1 : '')),
$edit->final1,
array("======="),
$edit->final2,
array('>>>>>>>' . ($label2 ? ' ' . $label2 : '')));
$this->_conflictingBlocks++;
} else {
$lines = array_merge($lines, $edit->merged());
}
}
return $lines;
}
/**
*/
protected function _diff3($edits1, $edits2)
{
$edits = array();
$bb = new Horde_Text_Diff_ThreeWay_BlockBuilder();
$e1 = current($edits1);
$e2 = current($edits2);
while ($e1 || $e2) {
if ($e1 && $e2 &&
$e1 instanceof Horde_Text_Diff_Op_Copy &&
$e2 instanceof Horde_Text_Diff_Op_Copy) {
/* We have copy blocks from both diffs. This is the (only)
* time we want to emit a diff3 copy block. Flush current
* diff3 diff block, if any. */
if ($edit = $bb->finish()) {
$edits[] = $edit;
}
$ncopy = min($e1->norig(), $e2->norig());
assert($ncopy > 0);
$edits[] = new Horde_Text_Diff_ThreeWay_Op_Copy(array_slice($e1->orig, 0, $ncopy));
if ($e1->norig() > $ncopy) {
array_splice($e1->orig, 0, $ncopy);
array_splice($e1->final, 0, $ncopy);
} else {
$e1 = next($edits1);
}
if ($e2->norig() > $ncopy) {
array_splice($e2->orig, 0, $ncopy);
array_splice($e2->final, 0, $ncopy);
} else {
$e2 = next($edits2);
}
} else {
if ($e1 && $e2) {
if ($e1->orig && $e2->orig) {
$norig = min($e1->norig(), $e2->norig());
$orig = array_splice($e1->orig, 0, $norig);
array_splice($e2->orig, 0, $norig);
$bb->input($orig);
}
if ($e1 instanceof Horde_Text_Diff_Op_Copy) {
$bb->out1(array_splice($e1->final, 0, $norig));
}
if ($e2 instanceof Horde_Text_Diff_Op_Copy) {
$bb->out2(array_splice($e2->final, 0, $norig));
}
}
if ($e1 && ! $e1->orig) {
$bb->out1($e1->final);
$e1 = next($edits1);
}
if ($e2 && ! $e2->orig) {
$bb->out2($e2->final);
$e2 = next($edits2);
}
}
}
if ($edit = $bb->finish()) {
$edits[] = $edit;
}
return $edits;
}
}

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<?php
/**
* Copyright 2007-2017 Horde LLC (http://www.horde.org/)
*
* See the enclosed file COPYING for license information (LGPL). If you did
* not receive this file, see http://www.horde.org/licenses/lgpl21.
*
* @package Text_Diff
* @author Geoffrey T. Dairiki <dairiki@dairiki.org>
*/
// Disallow direct access to this file for security reasons
if(!defined("IN_MYBB"))
{
die("Direct initialization of this file is not allowed.<br /><br />Please make sure IN_MYBB is defined.");
}
class Horde_Text_Diff_ThreeWay_BlockBuilder
{
public function __construct()
{
$this->_init();
}
public function input($lines)
{
if ($lines) {
$this->_append($this->orig, $lines);
}
}
public function out1($lines)
{
if ($lines) {
$this->_append($this->final1, $lines);
}
}
public function out2($lines)
{
if ($lines) {
$this->_append($this->final2, $lines);
}
}
public function isEmpty()
{
return !$this->orig && !$this->final1 && !$this->final2;
}
public function finish()
{
if ($this->isEmpty()) {
return false;
} else {
$edit = new Horde_Text_Diff_ThreeWay_Op_Base($this->orig, $this->final1, $this->final2);
$this->_init();
return $edit;
}
}
protected function _init()
{
$this->orig = $this->final1 = $this->final2 = array();
}
protected function _append(&$array, $lines)
{
array_splice($array, sizeof($array), 0, $lines);
}
}

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<?php
/**
* Copyright 2007-2017 Horde LLC (http://www.horde.org/)
*
* See the enclosed file COPYING for license information (LGPL). If you did
* not receive this file, see http://www.horde.org/licenses/lgpl21.
*
* @package Text_Diff
* @author Geoffrey T. Dairiki <dairiki@dairiki.org>
*/
// Disallow direct access to this file for security reasons
if(!defined("IN_MYBB"))
{
die("Direct initialization of this file is not allowed.<br /><br />Please make sure IN_MYBB is defined.");
}
class Horde_Text_Diff_ThreeWay_Op_Base
{
public function __construct($orig = false, $final1 = false, $final2 = false)
{
$this->orig = $orig ? $orig : array();
$this->final1 = $final1 ? $final1 : array();
$this->final2 = $final2 ? $final2 : array();
}
public function merged()
{
if (!isset($this->_merged)) {
if ($this->final1 === $this->final2) {
$this->_merged = &$this->final1;
} elseif ($this->final1 === $this->orig) {
$this->_merged = &$this->final2;
} elseif ($this->final2 === $this->orig) {
$this->_merged = &$this->final1;
} else {
$this->_merged = false;
}
}
return $this->_merged;
}
public function isConflict()
{
return $this->merged() === false;
}
}

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<?php
/**
* Copyright 2007-2017 Horde LLC (http://www.horde.org/)
*
* See the enclosed file COPYING for license information (LGPL). If you did
* not receive this file, see http://www.horde.org/licenses/lgpl21.
*
* @package Text_Diff
* @author Geoffrey T. Dairiki <dairiki@dairiki.org>
*/
// Disallow direct access to this file for security reasons
if(!defined("IN_MYBB"))
{
die("Direct initialization of this file is not allowed.<br /><br />Please make sure IN_MYBB is defined.");
}
class Horde_Text_Diff_ThreeWay_Op_Copy extends Horde_Text_Diff_ThreeWay_Op_Base
{
public function __construct($lines = false)
{
$this->orig = $lines ? $lines : array();
$this->final1 = &$this->orig;
$this->final2 = &$this->orig;
}
public function merged()
{
return $this->orig;
}
public function isConflict()
{
return false;
}
}

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<html>
<head>
<title></title>
</head>
<body>
&nbsp;
</body>
</html>

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<html>
<head>
<title></title>
</head>
<body>
&nbsp;
</body>
</html>

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<html>
<head>
<title></title>
</head>
<body>
&nbsp;
</body>
</html>