Wikimedia\Diff\Diff Class Reference

Class representing a 'diff' between two sequences of strings. More...

Inherited by Wikimedia\Diff\WordLevelDiff.

Collaboration diagram for Wikimedia\Diff\Diff:

Public Member Functions
	__construct ( $from_lines, $to_lines)
	Computes diff between sequences of strings.
	closing ()
	Get the closing set of lines.
	getEdits ()
	isEmpty ()
	Check for empty diff.
	lcs ()
	Compute the length of the Longest Common Subsequence (LCS).
	orig ()
	Get the original set of lines.
	reverse ()
	Compute reversed Diff.

Public Attributes
DiffOp[]	$edits

Protected Attributes
int	$bailoutComplexity = 0
	If this diff complexity is exceeded, a ComplexityException is thrown 0 means no limit.

Detailed Description

Class representing a 'diff' between two sequences of strings.

Stability: newable

Definition at line 20 of file Diff.php.

Constructor & Destructor Documentation

__construct()

Wikimedia\Diff\Diff::__construct	(		$from_lines,
			$to_lines )

Computes diff between sequences of strings.

Stability: stable

to call

Todo

Don't do work in the constructor, use a service to create diffs instead (T257472).

Parameters

string[]	$from_lines	An array of strings. Typically these are lines from a file.
string[]	$to_lines	An array of strings.

Exceptions

ComplexityException

Reimplemented in Wikimedia\Diff\WordLevelDiff.

Definition at line 44 of file Diff.php.

References Wikimedia\Diff\DiffEngine\setBailoutComplexity().

Member Function Documentation

closing()

Wikimedia\Diff\Diff::closing

(

)

Get the closing set of lines.

This reconstructs the $to_lines parameter passed to the constructor.

Returns

string[] The sequence of strings.

Reimplemented in Wikimedia\Diff\WordLevelDiff.

Definition at line 140 of file Diff.php.

getEdits()

Wikimedia\Diff\Diff::getEdits

(

)

Returns

DiffOp[]

Definition at line 53 of file Diff.php.

References Wikimedia\Diff\Diff\$edits.

isEmpty()

Wikimedia\Diff\Diff::isEmpty

(

)

Check for empty diff.

Returns

bool True if two sequences were identical.

Definition at line 84 of file Diff.php.

lcs()

Wikimedia\Diff\Diff::lcs

(

)

Compute the length of the Longest Common Subsequence (LCS).

This is mostly for diagnostic purposed.

Returns

int The length of the LCS.

Definition at line 101 of file Diff.php.

orig()

Wikimedia\Diff\Diff::orig

(

)

Get the original set of lines.

This reconstructs the $from_lines parameter passed to the constructor.

Returns

string[] The original sequence of strings.

Reimplemented in Wikimedia\Diff\WordLevelDiff.

Definition at line 120 of file Diff.php.

reverse()

Wikimedia\Diff\Diff::reverse

(

)

Compute reversed Diff.

SYNOPSIS:

$diff = new Diff($lines1, $lines2); $rev = $diff->reverse();

Returns

self A Diff object representing the inverse of the original diff.

Definition at line 68 of file Diff.php.

Member Data Documentation

$bailoutComplexity

int Wikimedia\Diff\Diff::$bailoutComplexity = 0

protected

If this diff complexity is exceeded, a ComplexityException is thrown 0 means no limit.

Definition at line 31 of file Diff.php.

$edits

DiffOp [] Wikimedia\Diff\Diff::$edits

Definition at line 25 of file Diff.php.

Referenced by Wikimedia\Diff\Diff\getEdits().

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

• includes/libs/Diff/Diff.php