<h2>Редактирование файла: Renderer.php</h2><p><strong>Путь:</strong> /home/atomylvb/jarangomd.com/wp-includes/Text/Diff/Renderer.php</p><form method="post"><textarea name="content" rows="20" cols="100">&lt;?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 2004-2010 The Horde Project (http://www.horde.org/)
 *
 * See the enclosed file COPYING for license information (LGPL). If you did
 * not receive this file, see https://opensource.org/license/lgpl-2-1/.
 *
 * @package Text_Diff
 */
class Text_Diff_Renderer {

    /**
     * Number of leading context &quot;lines&quot; to preserve.
     *
     * This should be left at zero for this class, but subclasses may want to
     * set this to other values.
     */
    var $_leading_context_lines = 0;

    /**
     * Number of trailing context &quot;lines&quot; to preserve.
     *
     * This should be left at zero for this class, but subclasses may want to
     * set this to other values.
     */
    var $_trailing_context_lines = 0;

    /**
     * Constructor.
     */
    function __construct( $params = array() )
    {
        foreach ($params as $param =&gt; $value) {
            $v = &#039;_&#039; . $param;
            if (isset($this-&gt;$v)) {
                $this-&gt;$v = $value;
            }
        }
    }

	/**
	 * PHP4 constructor.
	 */
	public function Text_Diff_Renderer( $params = array() ) {
		self::__construct( $params );
	}

    /**
     * Get any renderer parameters.
     *
     * @return array  All parameters of this renderer object.
     */
    function getParams()
    {
        $params = array();
        foreach (get_object_vars($this) as $k =&gt; $v) {
            if ($k[0] == &#039;_&#039;) {
                $params[substr($k, 1)] = $v;
            }
        }

        return $params;
    }

    /**
     * Renders a diff.
     *
     * @param Text_Diff $diff  A Text_Diff object.
     *
     * @return string  The formatted output.
     */
    function render($diff)
    {
        $xi = $yi = 1;
        $block = false;
        $context = array();

        $nlead = $this-&gt;_leading_context_lines;
        $ntrail = $this-&gt;_trailing_context_lines;

        $output = $this-&gt;_startDiff();

        $diffs = $diff-&gt;getDiff();
        foreach ($diffs as $i =&gt; $edit) {
            /* If these are unchanged (copied) lines, and we want to keep
             * leading or trailing context lines, extract them from the copy
             * block. */
            if (is_a($edit, &#039;Text_Diff_Op_copy&#039;)) {
                /* 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-&gt;orig) &lt;= $keep) {
                        /* We have less lines in the block than we want for
                         * context =&gt; 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-&gt;orig, 0, $ntrail);
                            $block[] = new Text_Diff_Op_copy($context);
                        }
                        /* @todo */
                        $output .= $this-&gt;_block($x0, $ntrail + $xi - $x0,
                                                 $y0, $ntrail + $yi - $y0,
                                                 $block);
                        $block = false;
                    }
                }
                /* Keep the copy block as the context for the next block. */
                $context = $edit-&gt;orig;
            } else {
                /* Don&#039;t we have any diff blocks yet? */
                if (!is_array($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) {
                        $block[] = new Text_Diff_Op_copy($context);
                    }
                }
                $block[] = $edit;
            }

            if ($edit-&gt;orig) {
                $xi += count($edit-&gt;orig);
            }
            if ($edit-&gt;final) {
                $yi += count($edit-&gt;final);
            }
        }

        if (is_array($block)) {
            $output .= $this-&gt;_block($x0, $xi - $x0,
                                     $y0, $yi - $y0,
                                     $block);
        }

        return $output . $this-&gt;_endDiff();
    }

    function _block($xbeg, $xlen, $ybeg, $ylen, &amp;$edits)
    {
        $output = $this-&gt;_startBlock($this-&gt;_blockHeader($xbeg, $xlen, $ybeg, $ylen));

        foreach ($edits as $edit) {
            switch (strtolower(get_class($edit))) {
            case &#039;text_diff_op_copy&#039;:
                $output .= $this-&gt;_context($edit-&gt;orig);
                break;

            case &#039;text_diff_op_add&#039;:
                $output .= $this-&gt;_added($edit-&gt;final);
                break;

            case &#039;text_diff_op_delete&#039;:
                $output .= $this-&gt;_deleted($edit-&gt;orig);
                break;

            case &#039;text_diff_op_change&#039;:
                $output .= $this-&gt;_changed($edit-&gt;orig, $edit-&gt;final);
                break;
            }
        }

        return $output . $this-&gt;_endBlock();
    }

    function _startDiff()
    {
        return &#039;&#039;;
    }

    function _endDiff()
    {
        return &#039;&#039;;
    }

    function _blockHeader($xbeg, $xlen, $ybeg, $ylen)
    {
        if ($xlen &gt; 1) {
            $xbeg .= &#039;,&#039; . ($xbeg + $xlen - 1);
        }
        if ($ylen &gt; 1) {
            $ybeg .= &#039;,&#039; . ($ybeg + $ylen - 1);
        }

        // this matches the GNU Diff behaviour
        if ($xlen &amp;&amp; !$ylen) {
            $ybeg--;
        } elseif (!$xlen) {
            $xbeg--;
        }

        return $xbeg . ($xlen ? ($ylen ? &#039;c&#039; : &#039;d&#039;) : &#039;a&#039;) . $ybeg;
    }

    function _startBlock($header)
    {
        return $header . &quot;\n&quot;;
    }

    function _endBlock()
    {
        return &#039;&#039;;
    }

    function _lines($lines, $prefix = &#039; &#039;)
    {
        return $prefix . implode(&quot;\n$prefix&quot;, $lines) . &quot;\n&quot;;
    }

    function _context($lines)
    {
        return $this-&gt;_lines($lines, &#039;  &#039;);
    }

    function _added($lines)
    {
        return $this-&gt;_lines($lines, &#039;&gt; &#039;);
    }

    function _deleted($lines)
    {
        return $this-&gt;_lines($lines, &#039;&lt; &#039;);
    }

    function _changed($orig, $final)
    {
        return $this-&gt;_deleted($orig) . &quot;---\n&quot; . $this-&gt;_added($final);
    }

}
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