github
/
jgit
mirror of https://gitee.com/github-mirror-repo/jgit.git
1
0
Fork 0
Code Issues Releases Wiki Activity
Browse Source

Added further support for whitespace ignoring during diff 

Added code to support ignoring leading, trailing, and changed
whitespace when performing a diff operation. I also added command
line options to Diff to enable the various whitespace ignoring
methods. These match the flags for git diff.

Change-Id: Ie56301aafad59ee3f0fe5de62719f5023cd702c8
stable-0.9
Jeff Schumacher 15 years ago
parent
543235b805
commit
9869ef2592
7 changed files with 663 additions and 2 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Unified View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 30
      org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/Diff.java
  2. 100
      org.eclipse.jgit.test/tst/org/eclipse/jgit/diff/RawTextIgnoreLeadingWhitespaceTest.java
  3. 100
      org.eclipse.jgit.test/tst/org/eclipse/jgit/diff/RawTextIgnoreTrailingWhitespaceTest.java
  4. 105
      org.eclipse.jgit.test/tst/org/eclipse/jgit/diff/RawTextIgnoreWhitespaceChangeTest.java
  5. 104
      org.eclipse.jgit/src/org/eclipse/jgit/diff/RawTextIgnoreLeadingWhitespace.java
  6. 104
      org.eclipse.jgit/src/org/eclipse/jgit/diff/RawTextIgnoreTrailingWhitespace.java
  7. 122
      org.eclipse.jgit/src/org/eclipse/jgit/diff/RawTextIgnoreWhitespaceChange.java

30
org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/Diff.java
Unescape View File

@ -56,6 +56,10 @@ import org.kohsuke.args4j.Option;
import org.eclipse.jgit.diff.DiffFormatter; import org.eclipse.jgit.diff.DiffFormatter;
import org.eclipse.jgit.diff.MyersDiff; import org.eclipse.jgit.diff.MyersDiff;
import org.eclipse.jgit.diff.RawText; import org.eclipse.jgit.diff.RawText;
import org.eclipse.jgit.diff.RawTextIgnoreAllWhitespace;
import org.eclipse.jgit.diff.RawTextIgnoreLeadingWhitespace;
import org.eclipse.jgit.diff.RawTextIgnoreTrailingWhitespace;
import org.eclipse.jgit.diff.RawTextIgnoreWhitespaceChange;
import org.eclipse.jgit.lib.FileMode; import org.eclipse.jgit.lib.FileMode;
import org.eclipse.jgit.lib.ObjectId; import org.eclipse.jgit.lib.ObjectId;
import org.eclipse.jgit.pgm.opt.PathTreeFilterHandler; import org.eclipse.jgit.pgm.opt.PathTreeFilterHandler;
@ -77,6 +81,18 @@ class Diff extends TextBuiltin {
@Option(name = "--", metaVar = "metaVar_port", multiValued = true, handler = PathTreeFilterHandler.class) @Option(name = "--", metaVar = "metaVar_port", multiValued = true, handler = PathTreeFilterHandler.class)
private TreeFilter pathFilter = TreeFilter.ALL; private TreeFilter pathFilter = TreeFilter.ALL;
@Option(name = "--ignore-space-at-eol")
private boolean ignoreWsTrailing;
@Option(name = "--ignore-leading-space")
private boolean ignoreWsLeading;
@Option(name = "-b", aliases = { "--ignore-space-change" })
private boolean ignoreWsChange;
@Option(name = "-w", aliases = { "--ignore-all-space" })
private boolean ignoreWsAll;
private DiffFormatter fmt = new DiffFormatter(); private DiffFormatter fmt = new DiffFormatter();
@Override @Override
@ -124,8 +140,18 @@ class Diff extends TextBuiltin {
private RawText getRawText(ObjectId id) throws IOException { private RawText getRawText(ObjectId id) throws IOException {
if (id.equals(ObjectId.zeroId())) if (id.equals(ObjectId.zeroId()))
return new RawText(new byte[] { }); return new RawText(new byte[] {});
return new RawText(db.openBlob(id).getCachedBytes()); byte[] raw = db.openBlob(id).getCachedBytes();
if (ignoreWsAll)
return new RawTextIgnoreAllWhitespace(raw);
else if (ignoreWsTrailing)
return new RawTextIgnoreTrailingWhitespace(raw);
else if (ignoreWsChange)
return new RawTextIgnoreWhitespaceChange(raw);
else if (ignoreWsLeading)
return new RawTextIgnoreLeadingWhitespace(raw);
else
return new RawText(raw);
} }
} }

100
org.eclipse.jgit.test/tst/org/eclipse/jgit/diff/RawTextIgnoreLeadingWhitespaceTest.java
Unescape View File

@ -0,0 +1,100 @@
/*
* Copyright (C) 2009-2010, Google Inc.
* Copyright (C) 2009, Johannes E. Schindelin <johannes.schindelin@gmx.de>
* and other copyright owners as documented in the project's IP log.
*
* This program and the accompanying materials are made available
* under the terms of the Eclipse Distribution License v1.0 which
* accompanies this distribution, is reproduced below, and is
* available at http://www.eclipse.org/org/documents/edl-v10.php
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
*
* - Neither the name of the Eclipse Foundation, Inc. nor the
* names of its contributors may be used to endorse or promote
* products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.eclipse.jgit.diff;
import org.eclipse.jgit.lib.Constants;
import junit.framework.TestCase;
public class RawTextIgnoreLeadingWhitespaceTest extends TestCase {
public void testEqualsWithoutWhitespace() {
final RawText a = new RawTextIgnoreLeadingWhitespace(Constants
.encodeASCII("foo-a\nfoo-b\nfoo\n"));
final RawText b = new RawTextIgnoreLeadingWhitespace(Constants
.encodeASCII("foo-b\nfoo-c\nf\n"));
assertEquals(3, a.size());
assertEquals(3, b.size());
// foo-a != foo-b
assertFalse(a.equals(0, b, 0));
assertFalse(b.equals(0, a, 0));
// foo-b == foo-b
assertTrue(a.equals(1, b, 0));
assertTrue(b.equals(0, a, 1));
// foo != f
assertFalse(a.equals(2, b, 2));
assertFalse(b.equals(2, a, 2));
}
public void testEqualsWithWhitespace() {
final RawText a = new RawTextIgnoreLeadingWhitespace(Constants
.encodeASCII("foo-a\n \n a b c\n a\nb \n"));
final RawText b = new RawTextIgnoreLeadingWhitespace(Constants
.encodeASCII("foo-a b\n\nab c\na\nb\n"));
// "foo-a" != "foo-a b"
assertFalse(a.equals(0, b, 0));
assertFalse(b.equals(0, a, 0));
// " " == ""
assertTrue(a.equals(1, b, 1));
assertTrue(b.equals(1, a, 1));
// " a b c" != "ab c"
assertFalse(a.equals(2, b, 2));
assertFalse(b.equals(2, a, 2));
// " a" == "a"
assertTrue(a.equals(3, b, 3));
assertTrue(b.equals(3, a, 3));
// "b " != "b"
assertFalse(a.equals(4, b, 4));
assertFalse(b.equals(4, a, 4));
}
}

100
org.eclipse.jgit.test/tst/org/eclipse/jgit/diff/RawTextIgnoreTrailingWhitespaceTest.java
Unescape View File

@ -0,0 +1,100 @@
/*
* Copyright (C) 2009-2010, Google Inc.
* Copyright (C) 2009, Johannes E. Schindelin <johannes.schindelin@gmx.de>
* and other copyright owners as documented in the project's IP log.
*
* This program and the accompanying materials are made available
* under the terms of the Eclipse Distribution License v1.0 which
* accompanies this distribution, is reproduced below, and is
* available at http://www.eclipse.org/org/documents/edl-v10.php
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
*
* - Neither the name of the Eclipse Foundation, Inc. nor the
* names of its contributors may be used to endorse or promote
* products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.eclipse.jgit.diff;
import org.eclipse.jgit.lib.Constants;
import junit.framework.TestCase;
public class RawTextIgnoreTrailingWhitespaceTest extends TestCase {
public void testEqualsWithoutWhitespace() {
final RawText a = new RawTextIgnoreTrailingWhitespace(Constants
.encodeASCII("foo-a\nfoo-b\nfoo\n"));
final RawText b = new RawTextIgnoreTrailingWhitespace(Constants
.encodeASCII("foo-b\nfoo-c\nf\n"));
assertEquals(3, a.size());
assertEquals(3, b.size());
// foo-a != foo-b
assertFalse(a.equals(0, b, 0));
assertFalse(b.equals(0, a, 0));
// foo-b == foo-b
assertTrue(a.equals(1, b, 0));
assertTrue(b.equals(0, a, 1));
// foo != f
assertFalse(a.equals(2, b, 2));
assertFalse(b.equals(2, a, 2));
}
public void testEqualsWithWhitespace() {
final RawText a = new RawTextIgnoreTrailingWhitespace(Constants
.encodeASCII("foo-a\n \n a b c\na \n b\n"));
final RawText b = new RawTextIgnoreTrailingWhitespace(Constants
.encodeASCII("foo-a b\n\nab c\na\nb\n"));
// "foo-a" != "foo-a b"
assertFalse(a.equals(0, b, 0));
assertFalse(b.equals(0, a, 0));
// " " == ""
assertTrue(a.equals(1, b, 1));
assertTrue(b.equals(1, a, 1));
// " a b c" != "ab c"
assertFalse(a.equals(2, b, 2));
assertFalse(b.equals(2, a, 2));
// "a " == "a"
assertTrue(a.equals(3, b, 3));
assertTrue(b.equals(3, a, 3));
// " b" != "b"
assertFalse(a.equals(4, b, 4));
assertFalse(b.equals(4, a, 4));
}
}

105
org.eclipse.jgit.test/tst/org/eclipse/jgit/diff/RawTextIgnoreWhitespaceChangeTest.java
Unescape View File

@ -0,0 +1,105 @@
/*
* Copyright (C) 2009-2010, Google Inc.
* Copyright (C) 2009, Johannes E. Schindelin <johannes.schindelin@gmx.de>
* and other copyright owners as documented in the project's IP log.
*
* This program and the accompanying materials are made available
* under the terms of the Eclipse Distribution License v1.0 which
* accompanies this distribution, is reproduced below, and is
* available at http://www.eclipse.org/org/documents/edl-v10.php
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
*
* - Neither the name of the Eclipse Foundation, Inc. nor the
* names of its contributors may be used to endorse or promote
* products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.eclipse.jgit.diff;
import org.eclipse.jgit.lib.Constants;
import junit.framework.TestCase;
public class RawTextIgnoreWhitespaceChangeTest extends TestCase {
public void testEqualsWithoutWhitespace() {
final RawText a = new RawTextIgnoreWhitespaceChange(Constants
.encodeASCII("foo-a\nfoo-b\nfoo\n"));
final RawText b = new RawTextIgnoreWhitespaceChange(Constants
.encodeASCII("foo-b\nfoo-c\nf\n"));
assertEquals(3, a.size());
assertEquals(3, b.size());
// foo-a != foo-b
assertFalse(a.equals(0, b, 0));
assertFalse(b.equals(0, a, 0));
// foo-b == foo-b
assertTrue(a.equals(1, b, 0));
assertTrue(b.equals(0, a, 1));
// foo != f
assertFalse(a.equals(2, b, 2));
assertFalse(b.equals(2, a, 2));
}
public void testEqualsWithWhitespace() {
final RawText a = new RawTextIgnoreWhitespaceChange(
Constants
.encodeASCII("foo-a\n \n a b c\na \n foo\na b c\n"));
final RawText b = new RawTextIgnoreWhitespaceChange(Constants
.encodeASCII("foo-a b\n\nab c\na\nfoo\na b c \n"));
// "foo-a" != "foo-a b"
assertFalse(a.equals(0, b, 0));
assertFalse(b.equals(0, a, 0));
// " " == ""
assertTrue(a.equals(1, b, 1));
assertTrue(b.equals(1, a, 1));
// " a b c" != "ab c"
assertFalse(a.equals(2, b, 2));
assertFalse(b.equals(2, a, 2));
// "a " == "a"
assertTrue(a.equals(3, b, 3));
assertTrue(b.equals(3, a, 3));
// " foo" != "foo"
assertFalse(a.equals(4, b, 4));
assertFalse(b.equals(4, a, 4));
// "a b c" == "a b c "
assertTrue(a.equals(5, b, 5));
assertTrue(b.equals(5, a, 5));
}
}

104
org.eclipse.jgit/src/org/eclipse/jgit/diff/RawTextIgnoreLeadingWhitespace.java
Unescape View File

@ -0,0 +1,104 @@
/*
* Copyright (C) 2009-2010, Google Inc.
* Copyright (C) 2008-2009, Johannes E. Schindelin <johannes.schindelin@gmx.de>
* and other copyright owners as documented in the project's IP log.
*
* This program and the accompanying materials are made available
* under the terms of the Eclipse Distribution License v1.0 which
* accompanies this distribution, is reproduced below, and is
* available at http://www.eclipse.org/org/documents/edl-v10.php
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
*
* - Neither the name of the Eclipse Foundation, Inc. nor the
* names of its contributors may be used to endorse or promote
* products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.eclipse.jgit.diff;
import static org.eclipse.jgit.util.RawCharUtil.trimLeadingWhitespace;
/**
* A version of {@link RawText} that ignores leading whitespace.
*/
public class RawTextIgnoreLeadingWhitespace extends RawText {
/**
* Create a new sequence from an existing content byte array.
* <p>
* The entire array (indexes 0 through length-1) is used as the content.
*
* @param input
* the content array. The array is never modified, so passing
* through cached arrays is safe.
*/
public RawTextIgnoreLeadingWhitespace(byte[] input) {
super(input);
}
@Override
public boolean equals(final int i, final Sequence other, final int j) {
return equals(this, i + 1, (RawText) other, j + 1);
}
private static boolean equals(final RawText a, final int ai,
final RawText b, final int bi) {
if (a.hashes.get(ai) != b.hashes.get(bi))
return false;
int as = a.lines.get(ai);
int bs = b.lines.get(bi);
int ae = a.lines.get(ai + 1);
int be = b.lines.get(bi + 1);
as = trimLeadingWhitespace(a.content, as, ae);
bs = trimLeadingWhitespace(b.content, bs, be);
if (ae - as != be - bs)
return false;
while (as < ae) {
if (a.content[as++] != b.content[bs++])
return false;
}
return true;
}
@Override
protected int hashLine(final byte[] raw, int ptr, int end) {
int hash = 5381;
ptr = trimLeadingWhitespace(raw, ptr, end);
for (; ptr < end; ptr++) {
hash = (hash << 5) ^ (raw[ptr] & 0xff);
}
return hash;
}
}

104
org.eclipse.jgit/src/org/eclipse/jgit/diff/RawTextIgnoreTrailingWhitespace.java
Unescape View File

@ -0,0 +1,104 @@
/*
* Copyright (C) 2009-2010, Google Inc.
* Copyright (C) 2008-2009, Johannes E. Schindelin <johannes.schindelin@gmx.de>
* and other copyright owners as documented in the project's IP log.
*
* This program and the accompanying materials are made available
* under the terms of the Eclipse Distribution License v1.0 which
* accompanies this distribution, is reproduced below, and is
* available at http://www.eclipse.org/org/documents/edl-v10.php
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
*
* - Neither the name of the Eclipse Foundation, Inc. nor the
* names of its contributors may be used to endorse or promote
* products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.eclipse.jgit.diff;
import static org.eclipse.jgit.util.RawCharUtil.trimTrailingWhitespace;
/**
* A version of {@link RawText} that ignores trailing whitespace.
*/
public class RawTextIgnoreTrailingWhitespace extends RawText {
/**
* Create a new sequence from an existing content byte array.
* <p>
* The entire array (indexes 0 through length-1) is used as the content.
*
* @param input
* the content array. The array is never modified, so passing
* through cached arrays is safe.
*/
public RawTextIgnoreTrailingWhitespace(byte[] input) {
super(input);
}
@Override
public boolean equals(final int i, final Sequence other, final int j) {
return equals(this, i + 1, (RawText) other, j + 1);
}
private static boolean equals(final RawText a, final int ai,
final RawText b, final int bi) {
if (a.hashes.get(ai) != b.hashes.get(bi))
return false;
int as = a.lines.get(ai);
int bs = b.lines.get(bi);
int ae = a.lines.get(ai + 1);
int be = b.lines.get(bi + 1);
ae = trimTrailingWhitespace(a.content, as, ae);
be = trimTrailingWhitespace(b.content, bs, be);
if (ae - as != be - bs)
return false;
while (as < ae) {
if (a.content[as++] != b.content[bs++])
return false;
}
return true;
}
@Override
protected int hashLine(final byte[] raw, int ptr, int end) {
int hash = 5381;
end = trimTrailingWhitespace(raw, ptr, end);
for (; ptr < end; ptr++) {
hash = (hash << 5) ^ (raw[ptr] & 0xff);
}
return hash;
}
}

122
org.eclipse.jgit/src/org/eclipse/jgit/diff/RawTextIgnoreWhitespaceChange.java
Unescape View File

@ -0,0 +1,122 @@
/*
* Copyright (C) 2009-2010, Google Inc.
* Copyright (C) 2008-2009, Johannes E. Schindelin <johannes.schindelin@gmx.de>
* and other copyright owners as documented in the project's IP log.
*
* This program and the accompanying materials are made available
* under the terms of the Eclipse Distribution License v1.0 which
* accompanies this distribution, is reproduced below, and is
* available at http://www.eclipse.org/org/documents/edl-v10.php
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
*
* - Neither the name of the Eclipse Foundation, Inc. nor the
* names of its contributors may be used to endorse or promote
* products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.eclipse.jgit.diff;
import static org.eclipse.jgit.util.RawCharUtil.isWhitespace;
import static org.eclipse.jgit.util.RawCharUtil.trimTrailingWhitespace;
import static org.eclipse.jgit.util.RawCharUtil.trimLeadingWhitespace;
/**
* A version of {@link RawText} that ignores changes in the amount of
* whitespace, as well as trailing whitespace.
*/
public class RawTextIgnoreWhitespaceChange extends RawText {
/**
* Create a new sequence from an existing content byte array.
* <p>
* The entire array (indexes 0 through length-1) is used as the content.
*
* @param input
* the content array. The array is never modified, so passing
* through cached arrays is safe.
*/
public RawTextIgnoreWhitespaceChange(byte[] input) {
super(input);
}
@Override
public boolean equals(final int i, final Sequence other, final int j) {
return equals(this, i + 1, (RawText) other, j + 1);
}
private static boolean equals(final RawText a, final int ai,
final RawText b, final int bi) {
if (a.hashes.get(ai) != b.hashes.get(bi))
return false;
int as = a.lines.get(ai);
int bs = b.lines.get(bi);
int ae = a.lines.get(ai + 1);
int be = b.lines.get(bi + 1);
ae = trimTrailingWhitespace(a.content, as, ae);
be = trimTrailingWhitespace(b.content, bs, be);
while (as < ae && bs < be) {
byte ac = a.content[as];
byte bc = b.content[bs];
if (ac != bc)
return false;
if (isWhitespace(ac))
as = trimLeadingWhitespace(a.content, as, ae);
else
as++;
if (isWhitespace(bc))
bs = trimLeadingWhitespace(b.content, bs, be);
else
bs++;
}
return as == ae && bs == be;
}
@Override
protected int hashLine(final byte[] raw, int ptr, int end) {
int hash = 5381;
end = trimTrailingWhitespace(raw, ptr, end);
while (ptr < end) {
byte c = raw[ptr];
hash = (hash << 5) ^ (c & 0xff);
if (isWhitespace(c))
ptr = trimLeadingWhitespace(raw, ptr, end);
else
ptr++;
}
return hash;
}
}
Write Preview
Loading…
Cancel
Save