DiffFormatter Class Reference

Collaboration diagram for DiffFormatter:

Public Member Functions
	format ($diff)
	Format a diff. More...
	_block ($xbeg, $xlen, $ybeg, $ylen, $edits)
	_start_diff ()
	_end_diff ()
	_block_header ($xbeg, $xlen, $ybeg, $ylen)
	_start_block ($header)
	_end_block ()
	_lines ($lines, $prefix=' ')
	_context ($lines)
	_added ($lines)
	_deleted ($lines)
	_changed ($orig, $closing)

Data Fields
	$leading_context_lines = 0
	Number of leading context "lines" to preserve. More...
	$trailing_context_lines = 0
	Number of trailing context "lines" to preserve. More...

Detailed Description

Definition at line 834 of file class.WordLevelDiff.php.

Member Function Documentation

_added()

DiffFormatter::_added

(

$lines

)

Definition at line 996 of file class.WordLevelDiff.php.

    {
        $this->_lines($lines, '>');
    }

_block()

DiffFormatter::_block	(		$xbeg,
			$xlen,
			$ybeg,
			$ylen,
			$edits
	)

Definition at line 929 of file class.WordLevelDiff.php.

    {
        $fname = 'DiffFormatter::_block';
        //wfProfileIn( $fname );
        $this->_start_block($this->_block_header($xbeg, $xlen, $ybeg, $ylen));
        foreach ($edits as $edit) {
            if ($edit->type == 'copy') {
                $this->_context($edit->orig);
            } elseif ($edit->type == 'add') {
                $this->_added($edit->closing);
            } elseif ($edit->type == 'delete') {
                $this->_deleted($edit->orig);
            } elseif ($edit->type == 'change') {
                $this->_changed($edit->orig, $edit->closing);
            } else {
                trigger_error('Unknown edit type', E_USER_ERROR);
            }
        }
        $this->_end_block();
        //wfProfileOut( $fname );
    }

_block_header()

DiffFormatter::_block_header	(		$xbeg,
			$xlen,
			$ybeg,
			$ylen
	)

Definition at line 963 of file class.WordLevelDiff.php.

    {
        if ($xlen > 1) {
            $xbeg .= "," . ($xbeg + $xlen - 1);
        }
        if ($ylen > 1) {
            $ybeg .= "," . ($ybeg + $ylen - 1);
        }

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

_changed()

DiffFormatter::_changed	(		$orig,
			$closing
	)

Definition at line 1005 of file class.WordLevelDiff.php.

References _DiffOp\$closing, and _DiffOp\$orig.

    {
        $this->_deleted($orig);
        echo "---\n";
        $this->_added($closing);
    }

_context()

DiffFormatter::_context

(

$lines

)

Definition at line 991 of file class.WordLevelDiff.php.

    {
        $this->_lines($lines);
    }

_deleted()

DiffFormatter::_deleted

(

$lines

)

Definition at line 1000 of file class.WordLevelDiff.php.

    {
        $this->_lines($lines, '<');
    }

_end_block()

DiffFormatter::_end_block

(

)

Definition at line 980 of file class.WordLevelDiff.php.

    {
    }

_end_diff()

DiffFormatter::_end_diff

(

)

Definition at line 956 of file class.WordLevelDiff.php.

    {
        $val = ob_get_contents();
        ob_end_clean();
        return $val;
    }

_lines()

DiffFormatter::_lines	(		$lines,
			$prefix = ' '
	)

Definition at line 984 of file class.WordLevelDiff.php.

    {
        foreach ($lines as $line) {
            echo "$prefix $line\n";
        }
    }

_start_block()

DiffFormatter::_start_block

(

$header

)

Definition at line 975 of file class.WordLevelDiff.php.

    {
        echo $header;
    }

_start_diff()

DiffFormatter::_start_diff

(

)

Definition at line 951 of file class.WordLevelDiff.php.

    {
        ob_start();
    }

format()

DiffFormatter::format

(

$diff

)

Format a diff.

Parameters

$diff

object A Diff object.

Returns

string The formatted output.

Definition at line 858 of file class.WordLevelDiff.php.

References $context.

    {
        $fname = 'DiffFormatter::format';
        //wfProfileIn( $fname );

        $xi = $yi = 1;
        $block = false;
        $context = array();

        $nlead = $this->leading_context_lines;
        $ntrail = $this->trailing_context_lines;

        $this->_start_diff();

        foreach ($diff->edits as $edit) {
            if ($edit->type == 'copy') {
                if (is_array($block)) {
                    if (sizeof($edit->orig) <= $nlead + $ntrail) {
                        $block[] = $edit;
                    } else {
                        if ($ntrail) {
                            $context = array_slice($edit->orig, 0, $ntrail);
                            $block[] = new _DiffOp_Copy($context);
                        }
                        $this->_block(
                            $x0,
                            $ntrail + $xi - $x0,
                            $y0,
                            $ntrail + $yi - $y0,
                            $block
                        );
                        $block = false;
                    }
                }
                $context = $edit->orig;
            } else {
                if (!is_array($block)) {
                    $context = array_slice($context, sizeof($context) - $nlead);
                    $x0 = $xi - sizeof($context);
                    $y0 = $yi - sizeof($context);
                    $block = array();
                    if ($context) {
                        $block[] = new _DiffOp_Copy($context);
                    }
                }
                $block[] = $edit;
            }

            if ($edit->orig) {
                $xi += sizeof($edit->orig);
            }
            if ($edit->closing) {
                $yi += sizeof($edit->closing);
            }
        }

        if (is_array($block)) {
            $this->_block(
                $x0,
                $xi - $x0,
                $y0,
                $yi - $y0,
                $block
            );
        }

        $end = $this->_end_diff();
        //wfProfileOut( $fname );
        return $end;
    }

Field Documentation

$leading_context_lines

DiffFormatter::$leading_context_lines = 0

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.

Definition at line 842 of file class.WordLevelDiff.php.

$trailing_context_lines

DiffFormatter::$trailing_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.

Definition at line 850 of file class.WordLevelDiff.php.

---

The documentation for this class was generated from the following file:

• components/ILIAS/COPage/mediawikidiff/class.WordLevelDiff.php