Class UnifiedDiffUtils

java.lang.Object

com.github.difflib.UnifiedDiffUtils

public final class UnifiedDiffUtils
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
private static final String	NULL_FILE_INDICATOR
private static final Pattern	UNIFIED_DIFF_CHUNK_REGEXP

Constructor Summary

Constructors

Modifier	Constructor	Description
private	UnifiedDiffUtils()

Method Summary

Modifier and Type	Method	Description
static List<String>	generateUnifiedDiff(String originalFileName, String revisedFileName, List<String> originalLines, Patch<String> patch, int contextSize)	generateUnifiedDiff takes a Patch and some other arguments, returning the Unified Diff format text representing the Patch.
private static List<String>	getDeltaText(AbstractDelta<String> delta)	getDeltaText returns the lines to be added to the Unified Diff text from the Delta parameter.
static Patch<String>	parseUnifiedDiff(List<String> diff)	Parse the given text in unified format and creates the list of deltas for it.
private static List<String>	processDeltas(List<String> origLines, List<AbstractDelta<String>> deltas, int contextSize, boolean newFile)	processDeltas takes a list of Deltas and outputs them together in a single block of Unified-Diff-format text.
private static void	processLinesInPrevChunk(List<String[]> rawChunk, Patch<String> patch, int old_ln, int new_ln)

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

UNIFIED_DIFF_CHUNK_REGEXP

private static final Pattern UNIFIED_DIFF_CHUNK_REGEXP

NULL_FILE_INDICATOR

private static final String NULL_FILE_INDICATOR

See Also:

• Constant Field Values

Constructor Details

UnifiedDiffUtils

private UnifiedDiffUtils()

Method Details

parseUnifiedDiff

public static Patch<String> parseUnifiedDiff(List<String> diff)

Parse the given text in unified format and creates the list of deltas for it.

Parameters:

diff - the text in unified format

Returns:

the patch with deltas.

processLinesInPrevChunk

private static void processLinesInPrevChunk(List<String[]> rawChunk,
 Patch<String> patch,
 int old_ln,
 int new_ln)

generateUnifiedDiff

public static List<String> generateUnifiedDiff(String originalFileName,
 String revisedFileName,
 List<String> originalLines,
 Patch<String> patch,
 int contextSize)

generateUnifiedDiff takes a Patch and some other arguments, returning the Unified Diff format text representing the Patch. Author: Bill James (tankerbay@gmail.com).

Parameters:

originalFileName - - Filename of the original (unrevised file)

revisedFileName - - Filename of the revised file

originalLines - - Lines of the original file

patch - - Patch created by the diff() function

contextSize - - number of lines of context output around each difference in the file.

Returns:

List of strings representing the Unified Diff representation of the Patch argument.

processDeltas

private static List<String> processDeltas(List<String> origLines,
 List<AbstractDelta<String>> deltas,
 int contextSize,
 boolean newFile)

processDeltas takes a list of Deltas and outputs them together in a single block of Unified-Diff-format text. Author: Bill James (tankerbay@gmail.com).

Parameters:

origLines - - the lines of the original file

deltas - - the Deltas to be output as a single block

contextSize - - the number of lines of context to place around block

Returns:

getDeltaText

private static List<String> getDeltaText(AbstractDelta<String> delta)

getDeltaText returns the lines to be added to the Unified Diff text from the Delta parameter. Author: Bill James (tankerbay@gmail.com).

Parameters:

delta - - the Delta to output

Returns:

list of String lines of code.