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Name	Size	Permission
ID3	[ DIR ]	drwxr-xr-x
IXR	[ DIR ]	drwxr-xr-x
PHPMailer	[ DIR ]	drwxr-xr-x
Requests	[ DIR ]	drwxr-xr-x
SimplePie	[ DIR ]	drwxr-xr-x
Text	[ DIR ]	drwxr-xr-x
css	[ DIR ]	drwxr-xr-x
customize	[ DIR ]	drwxr-xr-x
fonts	[ DIR ]	drwxr-xr-x
images	[ DIR ]	drwxr-xr-x
js	[ DIR ]	drwxr-xr-x
pomo	[ DIR ]	drwxr-xr-x
random_compat	[ DIR ]	drwxr-xr-x
rest-api	[ DIR ]	drwxr-xr-x
theme-compat	[ DIR ]	drwxr-xr-x
widgets	[ DIR ]	drwxr-xr-x
admin-bar.php	29.03 KB	-rw-r--r--
atomlib.php	11.56 KB	-rw-r--r--
author-template.php	16.22 KB	-rw-r--r--
blocks.php	12.43 KB	-rw-r--r--
bookmark-template.php	11.64 KB	-rw-r--r--
bookmark.php	13.55 KB	-rw-r--r--
bootstrap.php	4.11 KB	-rw-r--r--
cache.php	21.35 KB	-rw-r--r--
canonical.php	27.83 KB	-rw-r--r--
capabilities.php	28.84 KB	-rw-r--r--
category-template.php	50.8 KB	-rw-r--r--
category.php	12.41 KB	-rw-r--r--
class-IXR.php	2.51 KB	-rw-r--r--
class-feed.php	523 B	-rw-r--r--
class-http.php	36.22 KB	-rw-r--r--
class-json.php	39.53 KB	-rw-r--r--
class-oembed.php	30.73 KB	-rw-r--r--
class-phpass.php	7.15 KB	-rw-r--r--
class-phpmailer.php	668 B	-rw-r--r--
class-pop3.php	20.43 KB	-rw-r--r--
class-requests.php	29.09 KB	-rw-r--r--
class-simplepie.php	87.17 KB	-rw-r--r--
class-smtp.php	461 B	-rw-r--r--
class-walker-category-dropdown...	2.07 KB	-rw-r--r--
class-walker-category.php	6.62 KB	-rw-r--r--
class-walker-comment.php	13.33 KB	-rw-r--r--
class-walker-nav-menu.php	8.38 KB	-rw-r--r--
class-walker-page-dropdown.php	2.24 KB	-rw-r--r--
class-walker-page.php	6.78 KB	-rw-r--r--
class-wp-admin-bar.php	16.08 KB	-rw-r--r--
class-wp-ajax-response.php	5.01 KB	-rw-r--r--
class-wp-block-parser.php	14.86 KB	-rw-r--r--
class-wp-block-type-registry.p...	4.63 KB	-rw-r--r--
class-wp-block-type.php	4.7 KB	-rw-r--r--
class-wp-comment-query.php	42.21 KB	-rw-r--r--
class-wp-comment.php	8.75 KB	-rw-r--r--
class-wp-customize-control.php	24.49 KB	-rw-r--r--
class-wp-customize-manager.php	195.47 KB	-rw-r--r--
class-wp-customize-nav-menus.p...	53.08 KB	-rw-r--r--
class-wp-customize-panel.php	9.42 KB	-rw-r--r--
class-wp-customize-section.php	9.99 KB	-rw-r--r--
class-wp-customize-setting.php	27.59 KB	-rw-r--r--
class-wp-dependency.php	2.28 KB	-rw-r--r--
class-wp-editor.php	66.27 KB	-rw-r--r--
class-wp-embed.php	14.38 KB	-rw-r--r--
class-wp-error.php	4.81 KB	-rw-r--r--
class-wp-feed-cache-transient....	2.5 KB	-rw-r--r--
class-wp-feed-cache.php	749 B	-rw-r--r--
class-wp-hook.php	13.77 KB	-rw-r--r--
class-wp-http-cookie.php	6.44 KB	-rw-r--r--
class-wp-http-curl.php	11.64 KB	-rw-r--r--
class-wp-http-encoding.php	6.35 KB	-rw-r--r--
class-wp-http-ixr-client.php	3.25 KB	-rw-r--r--
class-wp-http-proxy.php	5.92 KB	-rw-r--r--
class-wp-http-requests-hooks.p...	1.83 KB	-rw-r--r--
class-wp-http-requests-respons...	4.19 KB	-rw-r--r--
class-wp-http-response.php	2.8 KB	-rw-r--r--
class-wp-http-streams.php	15.02 KB	-rw-r--r--
class-wp-image-editor-gd.php	13.18 KB	-rw-r--r--
class-wp-image-editor-imagick....	21.27 KB	-rw-r--r--
class-wp-image-editor.php	11.49 KB	-rw-r--r--
class-wp-list-util.php	6.25 KB	-rw-r--r--
class-wp-locale-switcher.php	4.91 KB	-rw-r--r--
class-wp-locale.php	14.26 KB	-rw-r--r--
class-wp-matchesmapregex.php	1.76 KB	-rw-r--r--
class-wp-meta-query.php	22.86 KB	-rw-r--r--
class-wp-metadata-lazyloader.p...	5.26 KB	-rw-r--r--
class-wp-network-query.php	16.79 KB	-rw-r--r--
class-wp-network.php	11.93 KB	-rw-r--r--
class-wp-oembed-controller.php	5.88 KB	-rw-r--r--
class-wp-post-type.php	17.81 KB	-rw-r--r--
class-wp-post.php	6.28 KB	-rw-r--r--
class-wp-query.php	127.67 KB	-rw-r--r--
class-wp-rewrite.php	58.42 KB	-rw-r--r--
class-wp-role.php	2.6 KB	-rw-r--r--
class-wp-roles.php	8.13 KB	-rw-r--r--
class-wp-session-tokens.php	7.25 KB	-rw-r--r--
class-wp-simplepie-file.php	2.27 KB	-rw-r--r--
class-wp-simplepie-sanitize-ks...	1.73 KB	-rw-r--r--
class-wp-site-query.php	26.78 KB	-rw-r--r--
class-wp-site.php	7.13 KB	-rw-r--r--
class-wp-tax-query.php	18.81 KB	-rw-r--r--
class-wp-taxonomy.php	10.41 KB	-rw-r--r--
class-wp-term-query.php	33.84 KB	-rw-r--r--
class-wp-term.php	5.14 KB	-rw-r--r--
class-wp-text-diff-renderer-in...	716 B	-rw-r--r--
class-wp-text-diff-renderer-ta...	16.06 KB	-rw-r--r--
class-wp-theme.php	48.09 KB	-rw-r--r--
class-wp-user-meta-session-tok...	2.92 KB	-rw-r--r--
class-wp-user-query.php	30.49 KB	-rw-r--r--
class-wp-user.php	20.91 KB	-rw-r--r--
class-wp-walker.php	12.39 KB	-rw-r--r--
class-wp-widget-factory.php	3.69 KB	-rw-r--r--
class-wp-widget.php	17.41 KB	-rw-r--r--
class-wp-xmlrpc-server.php	202.08 KB	-rw-r--r--
class-wp.php	24.18 KB	-rw-r--r--
class.wp-dependencies.php	11.24 KB	-rw-r--r--
class.wp-scripts.php	16.79 KB	-rw-r--r--
class.wp-styles.php	9.61 KB	-rw-r--r--
comment-template.php	87.64 KB	-rw-r--r--
comment.php	111.72 KB	-rw-r--r--
compat.php	15.99 KB	-rw-r--r--
cron.php	30.82 KB	-rw-r--r--
date.php	34.34 KB	-rw-r--r--
default-constants.php	9.61 KB	-rw-r--r--
default-filters.php	24.68 KB	-rw-r--r--
default-widgets.php	2.13 KB	-rw-r--r--
embed.php	44.04 KB	-rw-r--r--
feed-atom-comments.php	5.33 KB	-rw-r--r--
feed-atom.php	3.09 KB	-rw-r--r--
feed-rdf.php	2.67 KB	-rw-r--r--
feed-rss.php	1.25 KB	-rw-r--r--
feed-rss2-comments.php	4.09 KB	-rw-r--r--
feed-rss2.php	3.77 KB	-rw-r--r--
feed.php	19.29 KB	-rw-r--r--
formatting.php	277.86 KB	-rw-r--r--
functions.php	207.2 KB	-rw-r--r--
functions.wp-scripts.php	12.53 KB	-rw-r--r--
functions.wp-styles.php	8.03 KB	-rw-r--r--
general-template.php	138.46 KB	-rw-r--r--
http.php	21.9 KB	-rw-r--r--
kses.php	55.74 KB	-rw-r--r--
l10n.php	50.58 KB	-rw-r--r--
link-template.php	135.3 KB	-rw-r--r--
load.php	36.4 KB	-rw-r--r--
media-template.php	46.33 KB	-rw-r--r--
media.php	141.33 KB	-rw-r--r--
meta.php	44.98 KB	-rw-r--r--
mime.php	39.54 KB	-rw-r--r--
nav-menu-template.php	21.2 KB	-rw-r--r--
nav-menu.php	39.57 KB	-rw-r--r--
open_basedir.php	21 B	-rw-r--r--
option.php	67.91 KB	-rw-r--r--
pluggable.php	97.52 KB	-rw-r--r--
plugin.php	31.37 KB	-rw-r--r--
post-formats.php	6.86 KB	-rw-r--r--
post-template.php	60.07 KB	-rw-r--r--
post-thumbnail-template.php	8.75 KB	-rw-r--r--
post.php	227.37 KB	-rw-r--r--
query.php	31.24 KB	-rw-r--r--
rest-api.php	40.67 KB	-rw-r--r--
revision.php	21.08 KB	-rw-r--r--
rewrite.php	17.27 KB	-rw-r--r--
rss.php	22.66 KB	-rw-r--r--
script-loader.php	98.75 KB	-rw-r--r--
shortcodes.php	20.25 KB	-rw-r--r--
sitepad_functions.php	19.26 KB	-rw-r--r--
sitepad_functions2.php	21.99 KB	-rw-r--r--
spl-autoload-compat.php	2.51 KB	-rw-r--r--
taxonomy.php	152.95 KB	-rw-r--r--
template-loader.php	2.55 KB	-rw-r--r--
template.php	19.77 KB	-rw-r--r--
theme.php	99.09 KB	-rw-r--r--
update.php	24.81 KB	-rw-r--r--
user.php	120.69 KB	-rw-r--r--
vars.php	5.59 KB	-rw-r--r--
version.php	2.03 KB	-rw-r--r--
widgets.php	55.82 KB	-rw-r--r--
wlwmanifest.xml	1.03 KB	-rw-r--r--
wp-db.php	99.29 KB	-rw-r--r--
wp-diff.php	662 B	-rw-r--r--

Code Editor : class-wp-text-diff-renderer-table.php

<?php
/**
 * Diff API: WP_Text_Diff_Renderer_Table class
 *
 * @package WordPress
 * @subpackage Diff
 * @since 4.7.0
 */

/**
 * Table renderer to display the diff lines.
 *
 * @since 2.6.0
 * @uses Text_Diff_Renderer Extends
 */
class WP_Text_Diff_Renderer_Table extends Text_Diff_Renderer {

/**
	 * @see Text_Diff_Renderer::_leading_context_lines
	 * @var int
	 * @since 2.6.0
	 */
	public $_leading_context_lines = 10000;

/**
	 * @see Text_Diff_Renderer::_trailing_context_lines
	 * @var int
	 * @since 2.6.0
	 */
	public $_trailing_context_lines = 10000;

/**
	 * Threshold for when a diff should be saved or omitted.
	 *
	 * @var float
	 * @since 2.6.0
	 */
	protected $_diff_threshold = 0.6;

/**
	 * Inline display helper object name.
	 *
	 * @var string
	 * @since 2.6.0
	 */
	protected $inline_diff_renderer = 'WP_Text_Diff_Renderer_inline';

/**
	 * Should we show the split view or not
	 *
	 * @var string
	 * @since 3.6.0
	 */
	protected $_show_split_view = true;

protected $compat_fields = array( '_show_split_view', 'inline_diff_renderer', '_diff_threshold' );

/**
	 * Caches the output of count_chars() in compute_string_distance()
	 *
	 * @var array
	 * @since 5.0.0
	 */
	protected $count_cache = array();

/**
	 * Caches the difference calculation in compute_string_distance()
	 *
	 * @var array
	 * @since 5.0.0
	 */
	protected $difference_cache = array();

/**
	 * Constructor - Call parent constructor with params array.
	 *
	 * This will set class properties based on the key value pairs in the array.
	 *
	 * @since 2.6.0
	 *
	 * @param array $params
	 */
	public function __construct( $params = array() ) {
		parent::__construct( $params );
		if ( isset( $params['show_split_view'] ) ) {
			$this->_show_split_view = $params['show_split_view'];
		}
	}

/**
	 * @ignore
	 *
	 * @param string $header
	 * @return string
	 */
	public function _startBlock( $header ) {
		return '';
	}

/**
	 * @ignore
	 *
	 * @param array $lines
	 * @param string $prefix
	 */
	public function _lines( $lines, $prefix = ' ' ) {
	}

/**
	 * @ignore
	 *
	 * @param string $line HTML-escape the value.
	 * @return string
	 */
	public function addedLine( $line ) {
		return "<td class='diff-addedline'>{$line}</td>";

}

/**
	 * @ignore
	 *
	 * @param string $line HTML-escape the value.
	 * @return string
	 */
	public function deletedLine( $line ) {
		return "<td class='diff-deletedline'>{$line}</td>";
	}

/**
	 * @ignore
	 *
	 * @param string $line HTML-escape the value.
	 * @return string
	 */
	public function contextLine( $line ) {
		return "<td class='diff-context'>{$line}</td>";
	}

/**
	 * @ignore
	 *
	 * @return string
	 */
	public function emptyLine() {
		return '<td>&nbsp;</td>';
	}

/**
	 * @ignore
	 *
	 * @param array $lines
	 * @param bool $encode
	 * @return string
	 */
	public function _added( $lines, $encode = true ) {
		$r = '';
		foreach ( $lines as $line ) {
			if ( $encode ) {
				$processed_line = htmlspecialchars( $line );

/**
				 * Contextually filters a diffed line.
				 *
				 * Filters TextDiff processing of diffed line. By default, diffs are processed with
				 * htmlspecialchars. Use this filter to remove or change the processing. Passes a context
				 * indicating if the line is added, deleted or unchanged.
				 *
				 * @since 4.1.0
				 *
				 * @param String $processed_line The processed diffed line.
				 * @param String $line           The unprocessed diffed line.
				 * @param string null            The line context. Values are 'added', 'deleted' or 'unchanged'.
				 */
				$line = apply_filters( 'process_text_diff_html', $processed_line, $line, 'added' );
			}

if ( $this->_show_split_view ) {
				$r .= '<tr>' . $this->emptyLine() . $this->emptyLine() . $this->addedLine( $line ) . "</tr>\n";
			} else {
				$r .= '<tr>' . $this->addedLine( $line ) . "</tr>\n";
			}
		}
		return $r;
	}

/**
	 * @ignore
	 *
	 * @param array $lines
	 * @param bool $encode
	 * @return string
	 */
	public function _deleted( $lines, $encode = true ) {
		$r = '';
		foreach ( $lines as $line ) {
			if ( $encode ) {
				$processed_line = htmlspecialchars( $line );

/** This filter is documented in site-inc/wp-diff.php */
				$line = apply_filters( 'process_text_diff_html', $processed_line, $line, 'deleted' );
			}
			if ( $this->_show_split_view ) {
				$r .= '<tr>' . $this->deletedLine( $line ) . $this->emptyLine() . $this->emptyLine() . "</tr>\n";
			} else {
				$r .= '<tr>' . $this->deletedLine( $line ) . "</tr>\n";
			}
		}
		return $r;
	}

/**
	 * @ignore
	 *
	 * @param array $lines
	 * @param bool $encode
	 * @return string
	 */
	public function _context( $lines, $encode = true ) {
		$r = '';
		foreach ( $lines as $line ) {
			if ( $encode ) {
				$processed_line = htmlspecialchars( $line );

/** This filter is documented in site-inc/wp-diff.php */
				$line = apply_filters( 'process_text_diff_html', $processed_line, $line, 'unchanged' );
			}
			if ( $this->_show_split_view ) {
				$r .= '<tr>' . $this->contextLine( $line ) . $this->emptyLine() . $this->contextLine( $line ) . "</tr>\n";
			} else {
				$r .= '<tr>' . $this->contextLine( $line ) . "</tr>\n";
			}
		}
		return $r;
	}

/**
	 * Process changed lines to do word-by-word diffs for extra highlighting.
	 *
	 * (TRAC style) sometimes these lines can actually be deleted or added rows.
	 * We do additional processing to figure that out
	 *
	 * @since 2.6.0
	 *
	 * @param array $orig
	 * @param array $final
	 * @return string
	 */
	public function _changed( $orig, $final ) {
		$r = '';

// Does the aforementioned additional processing
		// *_matches tell what rows are "the same" in orig and final. Those pairs will be diffed to get word changes
		//	match is numeric: an index in other column
		//	match is 'X': no match. It is a new row
		// *_rows are column vectors for the orig column and the final column.
		//	row >= 0: an indix of the $orig or $final array
		//	row  < 0: a blank row for that column
		list($orig_matches, $final_matches, $orig_rows, $final_rows) = $this->interleave_changed_lines( $orig, $final );

// These will hold the word changes as determined by an inline diff
		$orig_diffs  = array();
		$final_diffs = array();

// Compute word diffs for each matched pair using the inline diff
		foreach ( $orig_matches as $o => $f ) {
			if ( is_numeric( $o ) && is_numeric( $f ) ) {
				$text_diff = new Text_Diff( 'auto', array( array( $orig[ $o ] ), array( $final[ $f ] ) ) );
				$renderer  = new $this->inline_diff_renderer;
				$diff      = $renderer->render( $text_diff );

// If they're too different, don't include any <ins> or <dels>
				if ( preg_match_all( '!(<ins>.*?</ins>|<del>.*?</del>)!', $diff, $diff_matches ) ) {
					// length of all text between <ins> or <del>
					$stripped_matches = strlen( strip_tags( join( ' ', $diff_matches[0] ) ) );
					// since we count lengith of text between <ins> or <del> (instead of picking just one),
					//	we double the length of chars not in those tags.
					$stripped_diff = strlen( strip_tags( $diff ) ) * 2 - $stripped_matches;
					$diff_ratio    = $stripped_matches / $stripped_diff;
					if ( $diff_ratio > $this->_diff_threshold ) {
						continue; // Too different. Don't save diffs.
					}
				}

// Un-inline the diffs by removing del or ins
				$orig_diffs[ $o ]  = preg_replace( '|<ins>.*?</ins>|', '', $diff );
				$final_diffs[ $f ] = preg_replace( '|<del>.*?</del>|', '', $diff );
			}
		}

foreach ( array_keys( $orig_rows ) as $row ) {
			// Both columns have blanks. Ignore them.
			if ( $orig_rows[ $row ] < 0 && $final_rows[ $row ] < 0 ) {
				continue;
			}

// If we have a word based diff, use it. Otherwise, use the normal line.
			if ( isset( $orig_diffs[ $orig_rows[ $row ] ] ) ) {
				$orig_line = $orig_diffs[ $orig_rows[ $row ] ];
			} elseif ( isset( $orig[ $orig_rows[ $row ] ] ) ) {
				$orig_line = htmlspecialchars( $orig[ $orig_rows[ $row ] ] );
			} else {
				$orig_line = '';
			}

if ( isset( $final_diffs[ $final_rows[ $row ] ] ) ) {
				$final_line = $final_diffs[ $final_rows[ $row ] ];
			} elseif ( isset( $final[ $final_rows[ $row ] ] ) ) {
				$final_line = htmlspecialchars( $final[ $final_rows[ $row ] ] );
			} else {
				$final_line = '';
			}

if ( $orig_rows[ $row ] < 0 ) { // Orig is blank. This is really an added row.
				$r .= $this->_added( array( $final_line ), false );
			} elseif ( $final_rows[ $row ] < 0 ) { // Final is blank. This is really a deleted row.
				$r .= $this->_deleted( array( $orig_line ), false );
			} else { // A true changed row.
				if ( $this->_show_split_view ) {
					$r .= '<tr>' . $this->deletedLine( $orig_line ) . $this->emptyLine() . $this->addedLine( $final_line ) . "</tr>\n";
				} else {
					$r .= '<tr>' . $this->deletedLine( $orig_line ) . '</tr><tr>' . $this->addedLine( $final_line ) . "</tr>\n";
				}
			}
		}

return $r;
	}

/**
	 * Takes changed blocks and matches which rows in orig turned into which rows in final.
	 *
	 * @since 2.6.0
	 *
	 * @param array $orig  Lines of the original version of the text.
	 * @param array $final Lines of the final version of the text.
	 * @return array {
	 *    Array containing results of comparing the original text to the final text.
	 *
	 *    @type array $orig_matches  Associative array of original matches. Index == row
	 *                               number of `$orig`, value == corresponding row number
	 *                               of that same line in `$final` or 'x' if there is no
	 *                               corresponding row (indicating it is a deleted line).
	 *    @type array $final_matches Associative array of final matches. Index == row
	 *                               number of `$final`, value == corresponding row number
	 *                               of that same line in `$orig` or 'x' if there is no
	 *                               corresponding row (indicating it is a new line).
	 *    @type array $orig_rows     Associative array of interleaved rows of `$orig` with
	 *                               blanks to keep matches aligned with side-by-side diff
	 *                               of `$final`. A value >= 0 corresponds to index of `$orig`.
	 *                               Value < 0 indicates a blank row.
	 *    @type array $final_rows    Associative array of interleaved rows of `$final` with
	 *                               blanks to keep matches aligned with side-by-side diff
	 *                               of `$orig`. A value >= 0 corresponds to index of `$final`.
	 *                               Value < 0 indicates a blank row.
	 * }
	 */
	public function interleave_changed_lines( $orig, $final ) {

// Contains all pairwise string comparisons. Keys are such that this need only be a one dimensional array.
		$matches = array();
		foreach ( array_keys( $orig ) as $o ) {
			foreach ( array_keys( $final ) as $f ) {
				$matches[ "$o,$f" ] = $this->compute_string_distance( $orig[ $o ], $final[ $f ] );
			}
		}
		asort( $matches ); // Order by string distance.

$orig_matches  = array();
		$final_matches = array();

foreach ( $matches as $keys => $difference ) {
			list($o, $f) = explode( ',', $keys );
			$o           = (int) $o;
			$f           = (int) $f;

// Already have better matches for these guys
			if ( isset( $orig_matches[ $o ] ) && isset( $final_matches[ $f ] ) ) {
				continue;
			}

// First match for these guys. Must be best match
			if ( ! isset( $orig_matches[ $o ] ) && ! isset( $final_matches[ $f ] ) ) {
				$orig_matches[ $o ]  = $f;
				$final_matches[ $f ] = $o;
				continue;
			}

// Best match of this final is already taken?  Must mean this final is a new row.
			if ( isset( $orig_matches[ $o ] ) ) {
				$final_matches[ $f ] = 'x';
			} elseif ( isset( $final_matches[ $f ] ) ) {
				// Best match of this orig is already taken?  Must mean this orig is a deleted row.
				$orig_matches[ $o ] = 'x';
			}
		}

// We read the text in this order
		ksort( $orig_matches );
		ksort( $final_matches );

// Stores rows and blanks for each column.
		$orig_rows  = $orig_rows_copy = array_keys( $orig_matches );
		$final_rows = array_keys( $final_matches );

// Interleaves rows with blanks to keep matches aligned.
		// We may end up with some extraneous blank rows, but we'll just ignore them later.
		foreach ( $orig_rows_copy as $orig_row ) {
			$final_pos = array_search( $orig_matches[ $orig_row ], $final_rows, true );
			$orig_pos  = (int) array_search( $orig_row, $orig_rows, true );

if ( false === $final_pos ) { // This orig is paired with a blank final.
				array_splice( $final_rows, $orig_pos, 0, -1 );
			} elseif ( $final_pos < $orig_pos ) { // This orig's match is up a ways. Pad final with blank rows.
				$diff_array = range( -1, $final_pos - $orig_pos );
				array_splice( $final_rows, $orig_pos, 0, $diff_array );
			} elseif ( $final_pos > $orig_pos ) { // This orig's match is down a ways. Pad orig with blank rows.
				$diff_array = range( -1, $orig_pos - $final_pos );
				array_splice( $orig_rows, $orig_pos, 0, $diff_array );
			}
		}

// Pad the ends with blank rows if the columns aren't the same length
		$diff_count = count( $orig_rows ) - count( $final_rows );
		if ( $diff_count < 0 ) {
			while ( $diff_count < 0 ) {
				array_push( $orig_rows, $diff_count++ );
			}
		} elseif ( $diff_count > 0 ) {
			$diff_count = -1 * $diff_count;
			while ( $diff_count < 0 ) {
				array_push( $final_rows, $diff_count++ );
			}
		}

return array( $orig_matches, $final_matches, $orig_rows, $final_rows );
	}

/**
	 * Computes a number that is intended to reflect the "distance" between two strings.
	 *
	 * @since 2.6.0
	 *
	 * @param string $string1
	 * @param string $string2
	 * @return int
	 */
	public function compute_string_distance( $string1, $string2 ) {
		// Use an md5 hash of the strings for a count cache, as it's fast to generate, and collisions aren't a concern.
		$count_key1 = md5( $string1 );
		$count_key2 = md5( $string2 );

// Cache vectors containing character frequency for all chars in each string.
		if ( ! isset( $this->count_cache[ $count_key1 ] ) ) {
			$this->count_cache[ $count_key1 ] = count_chars( $string1 );
		}
		if ( ! isset( $this->count_cache[ $count_key2 ] ) ) {
			$this->count_cache[ $count_key2 ] = count_chars( $string2 );
		}

$chars1 = $this->count_cache[ $count_key1 ];
		$chars2 = $this->count_cache[ $count_key2 ];

$difference_key = md5( implode( ',', $chars1 ) . ':' . implode( ',', $chars2 ) );
		if ( ! isset( $this->difference_cache[ $difference_key ] ) ) {
			// L1-norm of difference vector.
			$this->difference_cache[ $difference_key ] = array_sum( array_map( array( $this, 'difference' ), $chars1, $chars2 ) );
		}

$difference = $this->difference_cache[ $difference_key ];

// $string1 has zero length? Odd. Give huge penalty by not dividing.
		if ( ! $string1 ) {
			return $difference;
		}

// Return distance per character (of string1).
		return $difference / strlen( $string1 );
	}

/**
	 * @ignore
	 * @since 2.6.0
	 *
	 * @param int $a
	 * @param int $b
	 * @return int
	 */
	public function difference( $a, $b ) {
		return abs( $a - $b );
	}

/**
	 * Make private properties readable for backward compatibility.
	 *
	 * @since 4.0.0
	 *
	 * @param string $name Property to get.
	 * @return mixed Property.
	 */
	public function __get( $name ) {
		if ( in_array( $name, $this->compat_fields ) ) {
			return $this->$name;
		}
	}

/**
	 * Make private properties settable for backward compatibility.
	 *
	 * @since 4.0.0
	 *
	 * @param string $name  Property to check if set.
	 * @param mixed  $value Property value.
	 * @return mixed Newly-set property.
	 */
	public function __set( $name, $value ) {
		if ( in_array( $name, $this->compat_fields ) ) {
			return $this->$name = $value;
		}
	}

/**
	 * Make private properties checkable for backward compatibility.
	 *
	 * @since 4.0.0
	 *
	 * @param string $name Property to check if set.
	 * @return bool Whether the property is set.
	 */
	public function __isset( $name ) {
		if ( in_array( $name, $this->compat_fields ) ) {
			return isset( $this->$name );
		}
	}

/**
	 * Make private properties un-settable for backward compatibility.
	 *
	 * @since 4.0.0
	 *
	 * @param string $name Property to unset.
	 */
	public function __unset( $name ) {
		if ( in_array( $name, $this->compat_fields ) ) {
			unset( $this->$name );
		}
	}
}

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Code Editor : class-wp-text-diff-renderer-table.php