Package org.tmatesoft.svn.core.internal.wc.patch

Class SVNPatchHunk

java.lang.Object

org.tmatesoft.svn.core.internal.wc.patch.SVNPatchHunk

public class SVNPatchHunk
extends java.lang.Object

A single hunk inside a patch.

Version:

1.3

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	SVNPatchHunk.SVNPatchHunkRange

Field Summary

Fields

Modifier and Type	Field	Description
static final java.util.Comparator	COMPARATOR	Compare function for sorting hunks after parsing.
private SVNPatchFileStream	diffText	The hunk's unidiff text as it appeared in the patch file, without range information.
private long	leadingContext	Number of lines starting with ' ' before first '+' or '-'.
private SVNPatchHunk.SVNPatchHunkRange	modified
private static final SVNPatchFileStream.SVNPatchFileLineFilter	modified_line_filter	A stream line-filter which allows only modified text from a hunk, and filters special lines (which start with a backslash).
private SVNPatchFileStream	modifiedText
private SVNPatchHunk.SVNPatchHunkRange	original	Hunk ranges as they appeared in the patch file.
private static final SVNPatchFileStream.SVNPatchFileLineFilter	original_line_filter	A stream line-filter which allows only original text from a hunk, and filters special lines (which start with a backslash).
private SVNPatchFileStream	originalText	The original and modified texts in the hunk range.
private static final SVNPatchFileStream.SVNPatchFileLineTransformer	remove_leading_char_transformer	Line-transformer callback to shave leading diff symbols.
private long	trailingContext	Number of lines starting with ' ' after last '+' or '-'.

Constructor Summary

Constructors

Constructor	Description
SVNPatchHunk()

Method Summary

Modifier and Type	Method	Description
void	close()
private static char	getChar(java.lang.String line, int i)
SVNPatchFileStream	getDiffText()
long	getLeadingContext()
SVNPatchHunk.SVNPatchHunkRange	getModified()
SVNPatchFileStream	getModifiedText()
SVNPatchHunk.SVNPatchHunkRange	getOriginal()
SVNPatchFileStream	getOriginalText()
long	getTrailingContext()
private static boolean	parseHunkHeader(java.lang.String header, SVNPatchHunk hunk)	Try to parse a hunk header in string HEADER, putting parsed information into HUNK.
static SVNPatchHunk	parseNextHunk(SVNPatch patch)	Return the next HUNK from a PATCH, using STREAM to read data from the patch file.
private static java.lang.Integer	parseOffset(java.lang.String number)	Try to parse a positive number from a decimal number encoded in the string NUMBER.
private static boolean	parseRange(SVNPatchHunk.SVNPatchHunkRange hunkRange, java.lang.StringBuffer range)	Try to parse a hunk range specification from the string RANGE.

Methods inherited from class java.lang.Object

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

Field Details

COMPARATOR

public static final java.util.Comparator COMPARATOR

Compare function for sorting hunks after parsing. We sort hunks by their original line offset.

original_line_filter

private static final SVNPatchFileStream.SVNPatchFileLineFilter original_line_filter

A stream line-filter which allows only original text from a hunk, and filters special lines (which start with a backslash).

modified_line_filter

private static final SVNPatchFileStream.SVNPatchFileLineFilter modified_line_filter

A stream line-filter which allows only modified text from a hunk, and filters special lines (which start with a backslash).

remove_leading_char_transformer

private static final SVNPatchFileStream.SVNPatchFileLineTransformer remove_leading_char_transformer

Line-transformer callback to shave leading diff symbols.

diffText

private SVNPatchFileStream diffText

The hunk's unidiff text as it appeared in the patch file, without range information.

originalText

private SVNPatchFileStream originalText

The original and modified texts in the hunk range. Derived from the diff text. For example, consider a hunk such as:

modifiedText

private SVNPatchFileStream modifiedText

original

private SVNPatchHunk.SVNPatchHunkRange original

Hunk ranges as they appeared in the patch file. All numbers are lines, not bytes.

modified

private SVNPatchHunk.SVNPatchHunkRange modified

leadingContext

private long leadingContext

Number of lines starting with ' ' before first '+' or '-'.

trailingContext

private long trailingContext

Number of lines starting with ' ' after last '+' or '-'.

Constructor Details

SVNPatchHunk

public SVNPatchHunk()

Method Details

getDiffText

public SVNPatchFileStream getDiffText()

getOriginalText

public SVNPatchFileStream getOriginalText()

getModifiedText

public SVNPatchFileStream getModifiedText()

getOriginal

public SVNPatchHunk.SVNPatchHunkRange getOriginal()

getModified

public SVNPatchHunk.SVNPatchHunkRange getModified()

getLeadingContext

public long getLeadingContext()

getTrailingContext

public long getTrailingContext()

close

public void close()
           throws java.io.IOException

Throws:

java.io.IOException

parseNextHunk

public static SVNPatchHunk parseNextHunk(SVNPatch patch)
                                  throws java.io.IOException,
SVNException

Return the next HUNK from a PATCH, using STREAM to read data from the patch file. If no hunk can be found, set HUNK to NULL.

Throws:

java.io.IOException

SVNException

getChar

private static char getChar(java.lang.String line,
 int i)

parseHunkHeader

private static boolean parseHunkHeader(java.lang.String header,
 SVNPatchHunk hunk)

Try to parse a hunk header in string HEADER, putting parsed information into HUNK. Return TRUE if the header parsed correctly.

parseRange

private static boolean parseRange(SVNPatchHunk.SVNPatchHunkRange hunkRange,
 java.lang.StringBuffer range)

Try to parse a hunk range specification from the string RANGE. Return parsed information in START and LENGTH, and return TRUE if the range parsed correctly. Note: This function may modify the input value RANGE.

parseOffset

private static java.lang.Integer parseOffset(java.lang.String number)

Try to parse a positive number from a decimal number encoded in the string NUMBER. Return parsed number in OFFSET, and return TRUE if parsing was successful.