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Update Text_Diff. Props simek. Fixes #9467 

git-svn-id: http://svn.automattic.com/wordpress/trunk@13211 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
nacin 2010-02-19 01:25:26 +00:00
parent df6d56b0ce
commit 7d258d93af
7 changed files with 120 additions and 40 deletions
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42
wp-includes/Text/Diff.php
View File

@ -6,10 +6,8 @@
* The original PHP version of this code was written by Geoffrey T. Dairiki
* <dairiki@dairiki.org>, and is used/adapted with his permission.
*
* $Horde: framework/Text_Diff/Diff.php,v 1.26 2008/01/04 10:07:49 jan Exp $
*
* Copyright 2004 Geoffrey T. Dairiki <dairiki@dairiki.org>
* Copyright 2004-2008 The Horde Project (http://www.horde.org/)
* Copyright 2004-2010 The Horde Project (http://www.horde.org/)
*
* See the enclosed file COPYING for license information (LGPL). If you did
* not receive this file, see http://opensource.org/licenses/lgpl-license.php.
@ -65,6 +63,44 @@ class Text_Diff {
return $this->_edits;
}
/**
* returns the number of new (added) lines in a given diff.
*
* @since Text_Diff 1.1.0
*
* @return integer The number of new lines
*/
function countAddedLines()
{
$count = 0;
foreach ($this->_edits as $edit) {
if (is_a($edit, 'Text_Diff_Op_add') ||
is_a($edit, 'Text_Diff_Op_change')) {
$count += $edit->nfinal();
}
}
return $count;
}
/**
* Returns the number of deleted (removed) lines in a given diff.
*
* @since Text_Diff 1.1.0
*
* @return integer The number of deleted lines
*/
function countDeletedLines()
{
$count = 0;
foreach ($this->_edits as $edit) {
if (is_a($edit, 'Text_Diff_Op_delete') ||
is_a($edit, 'Text_Diff_Op_change')) {
$count += $edit->norig();
}
}
return $count;
}
/**
* Computes a reversed diff.
*

7
wp-includes/Text/Diff/Engine/native.php
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@ -1,9 +1,8 @@
<?php
/**
* $Horde: framework/Text_Diff/Diff/Engine/native.php,v 1.10 2008/01/04 10:27:53 jan Exp $
* Class used internally by Text_Diff to actually compute the diffs.
*
* Class used internally by Text_Diff to actually compute the diffs. This
* class is implemented using native PHP code.
* 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:
@ -19,7 +18,7 @@
* 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 2004-2008 The Horde Project (http://www.horde.org/)
* Copyright 2004-2010 The Horde Project (http://www.horde.org/)
*
* See the enclosed file COPYING for license information (LGPL). If you did
* not receive this file, see http://opensource.org/licenses/lgpl-license.php.

4
wp-includes/Text/Diff/Engine/shell.php
View File

@ -5,9 +5,7 @@
* This class uses the Unix `diff` program via shell_exec to compute the
* differences between the two input arrays.
*
* $Horde: framework/Text_Diff/Diff/Engine/shell.php,v 1.8 2008/01/04 10:07:50 jan Exp $
*
* Copyright 2007-2008 The Horde Project (http://www.horde.org/)
* Copyright 2007-2010 The Horde Project (http://www.horde.org/)
*
* See the enclosed file COPYING for license information (LGPL). If you did
* not receive this file, see http://opensource.org/licenses/lgpl-license.php.

26
wp-includes/Text/Diff/Engine/string.php
View File

@ -10,10 +10,8 @@
* echo $renderer->render($diff);
* </code>
*
* $Horde: framework/Text_Diff/Diff/Engine/string.php,v 1.7 2008/01/04 10:07:50 jan Exp $
*
* Copyright 2005 Örjan Persson <o@42mm.org>
* Copyright 2005-2008 The Horde Project (http://www.horde.org/)
* Copyright 2005-2010 The Horde Project (http://www.horde.org/)
*
* See the enclosed file COPYING for license information (LGPL). If you did
* not receive this file, see http://opensource.org/licenses/lgpl-license.php.
@ -39,6 +37,19 @@ class Text_Diff_Engine_string {
*/
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') {
return PEAR::raiseError('Type of diff is unsupported');
}
@ -48,17 +59,20 @@ class Text_Diff_Engine_string {
$unified = strpos($diff, '---');
if ($context === $unified) {
return PEAR::raiseError('Type of diff could not be detected');
} elseif ($context === false || $context === false) {
} elseif ($context === false || $unified === false) {
$mode = $context !== false ? 'context' : 'unified';
} else {
$mode = $context < $unified ? 'context' : 'unified';
}
}
// split by new line and remove the diff header
$diff = explode("\n", $diff);
// 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);

7
wp-includes/Text/Diff/Engine/xdiff.php
View File

@ -5,9 +5,7 @@
* This class uses the xdiff PECL package (http://pecl.php.net/package/xdiff)
* to compute the differences between the two input arrays.
*
* $Horde: framework/Text_Diff/Diff/Engine/xdiff.php,v 1.6 2008/01/04 10:07:50 jan Exp $
*
* Copyright 2004-2008 The Horde Project (http://www.horde.org/)
* Copyright 2004-2010 The Horde Project (http://www.horde.org/)
*
* See the enclosed file COPYING for license information (LGPL). If you did
* not receive this file, see http://opensource.org/licenses/lgpl-license.php.
@ -42,6 +40,9 @@ class Text_Diff_Engine_xdiff {
* valid, albeit a little less descriptive and efficient. */
$edits = array();
foreach ($diff as $line) {
if (!strlen($line)) {
continue;
}
switch ($line[0]) {
case ' ':
$edits[] = &new Text_Diff_Op_copy(array(substr($line, 1)));

4
wp-includes/Text/Diff/Renderer.php
View File

@ -5,9 +5,7 @@
* This class renders the diff in classic diff format. It is intended that
* this class be customized via inheritance, to obtain fancier outputs.
*
* $Horde: framework/Text_Diff/Diff/Renderer.php,v 1.21 2008/01/04 10:07:50 jan Exp $
*
* Copyright 2004-2008 The Horde Project (http://www.horde.org/)
* Copyright 2004-2010 The Horde Project (http://www.horde.org/)
*
* See the enclosed file COPYING for license information (LGPL). If you did
* not receive this file, see http://opensource.org/licenses/lgpl-license.php.

66
wp-includes/Text/Diff/Renderer/inline.php
View File

@ -2,9 +2,7 @@
/**
* "Inline" diff renderer.
*
* $Horde: framework/Text_Diff/Diff/Renderer/inline.php,v 1.21 2008/01/04 10:07:51 jan Exp $
*
* Copyright 2004-2008 The Horde Project (http://www.horde.org/)
* Copyright 2004-2010 The Horde Project (http://www.horde.org/)
*
* See the enclosed file COPYING for license information (LGPL). If you did
* not receive this file, see http://opensource.org/licenses/lgpl-license.php.
@ -30,42 +28,65 @@ class Text_Diff_Renderer_inline extends Text_Diff_Renderer {
/**
* Number of leading context "lines" to preserve.
*
* @var integer
*/
var $_leading_context_lines = 10000;
/**
* Number of trailing context "lines" to preserve.
*
* @var integer
*/
var $_trailing_context_lines = 10000;
/**
* Prefix for inserted text.
*
* @var string
*/
var $_ins_prefix = '<ins>';
/**
* Suffix for inserted text.
*
* @var string
*/
var $_ins_suffix = '</ins>';
/**
* Prefix for deleted text.
*
* @var string
*/
var $_del_prefix = '<del>';
/**
* Suffix for deleted text.
*
* @var string
*/
var $_del_suffix = '</del>';
/**
* Header for each change block.
*
* @var string
*/
var $_block_header = '';
/**
* Whether to split down to character-level.
*
* @var boolean
*/
var $_split_characters = false;
/**
* What are we currently splitting on? Used to recurse to show word-level
* changes.
* or character-level changes.
*
* @var string
*/
var $_split_level = 'lines';
@ -85,10 +106,10 @@ class Text_Diff_Renderer_inline extends Text_Diff_Renderer {
array_walk($lines, array(&$this, '_encode'));
}
if ($this->_split_level == 'words') {
return implode('', $lines);
} else {
if ($this->_split_level == 'lines') {
return implode("\n", $lines) . "\n";
} else {
return implode('', $lines);
}
}
@ -110,8 +131,13 @@ class Text_Diff_Renderer_inline extends Text_Diff_Renderer {
function _changed($orig, $final)
{
/* If we've already split on words, don't try to do so again - just
* display. */
/* If we've already split on characters, just display. */
if ($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 &&
@ -130,15 +156,23 @@ class Text_Diff_Renderer_inline extends Text_Diff_Renderer {
/* Non-printing newline marker. */
$nl = "\0";
/* We want to split on word boundaries, but we need to
* preserve whitespace as well. Therefore we split on words,
* but include all blocks of whitespace in the wordlist. */
$diff = new Text_Diff($this->_splitOnWords($text1, $nl),
$this->_splitOnWords($text2, $nl));
if ($this->_split_characters) {
$diff = new Text_Diff('native',
array(preg_split('//', $text1),
preg_split('//', $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. */
$diff = new Text_Diff('native',
array($this->_splitOnWords($text1, $nl),
$this->_splitOnWords($text2, $nl)));
}
/* Get the diff in inline format. */
$renderer = new Text_Diff_Renderer_inline(array_merge($this->getParams(),
array('split_level' => 'words')));
$renderer = new Text_Diff_Renderer_inline
(array_merge($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";