opendev/gerrit
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In changes involving C++, *.h files should appear before their
corresponding *.cc file, although their lexicographic order is the
reverse. With this change, the relative order of *.h and *.cpp file
pairs in file groups of change comment emails is corrected.

Bug: Issue 4586
Change-Id: Ic9618a07167bde570bdfeb0ea54721c763034863
This commit is contained in:
Wyatt Allen
2016-09-28 11:41:47 -07:00
parent 25afcccd2e
commit 6964572185
5 changed files with 138 additions and 33 deletions
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64
gerrit-common/src/main/java/com/google/gerrit/common/data/FilenameComparator.java Normal file
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@@ -0,0 +1,64 @@
// Copyright (C) 2016 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package com.google.gerrit.common.data;
import com.google.gerrit.reviewdb.client.Patch;
import java.util.Arrays;
import java.util.Comparator;
import java.util.HashSet;
import java.util.Set;
public class FilenameComparator implements Comparator<String> {
public static final FilenameComparator INSTANCE = new FilenameComparator();
private static final Set<String> cppHeaderSuffixes = new HashSet<String>(
Arrays.asList(".h", ".hxx", ".hpp"));
private FilenameComparator() {}
@Override
public int compare(final String path1, final String path2) {
if (Patch.COMMIT_MSG.equals(path1) && Patch.COMMIT_MSG.equals(path2)) {
return 0;
} else if (Patch.COMMIT_MSG.equals(path1)) {
return -1;
} else if (Patch.COMMIT_MSG.equals(path2)) {
return 1;
}
if (Patch.MERGE_LIST.equals(path1) && Patch.MERGE_LIST.equals(path2)) {
return 0;
} else if (Patch.MERGE_LIST.equals(path1)) {
return -1;
} else if (Patch.MERGE_LIST.equals(path2)) {
return 1;
}
int s1 = path1.lastIndexOf('.');
int s2 = path2.lastIndexOf('.');
if (s1 > 0 && s2 > 0 &&
path1.substring(0, s1).equals(path2.substring(0, s2))) {
String suffixA = path1.substring(s1);
String suffixB = path2.substring(s2);
// C++ and C: give priority to header files (.h/.hpp/...)
if (cppHeaderSuffixes.contains(suffixA)) {
return -1;
} else if (cppHeaderSuffixes.contains(suffixB)) {
return 1;
}
}
return path1.compareTo(path2);
}
}

65
gerrit-common/src/test/java/com/google/gerrit/common/data/FilenameComparatorTest.java Normal file
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// Copyright (C) 2016 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package com.google.gerrit.common.data;
import static com.google.common.truth.Truth.assertThat;
import org.junit.Test;
public class FilenameComparatorTest {
private FilenameComparator comparator = FilenameComparator.INSTANCE;
@Test
public void basicPaths() {
assertThat(comparator.compare(
"abc/xyz/FileOne.java", "xyz/abc/FileTwo.java")).isLessThan(0);
assertThat(comparator.compare(
"abc/xyz/FileOne.java", "abc/xyz/FileOne.java")).isEqualTo(0);
assertThat(comparator.compare(
"zzz/yyy/FileOne.java", "abc/xyz/FileOne.java")).isGreaterThan(0);
}
@Test
public void specialPaths() {
assertThat(comparator.compare(
"ABC/xyz/FileOne.java", "/COMMIT_MSG")).isGreaterThan(0);
assertThat(comparator.compare(
"/COMMIT_MSG", "ABC/xyz/FileOne.java")).isLessThan(0);
assertThat(comparator.compare(
"ABC/xyz/FileOne.java", "/MERGE_LIST")).isGreaterThan(0);
assertThat(comparator.compare(
"/MERGE_LIST", "ABC/xyz/FileOne.java")).isLessThan(0);
assertThat(comparator.compare(
"/COMMIT_MSG", "/MERGE_LIST")).isLessThan(0);
assertThat(comparator.compare(
"/MERGE_LIST", "/COMMIT_MSG")).isGreaterThan(0);
assertThat(comparator.compare(
"/COMMIT_MSG", "/COMMIT_MSG")).isEqualTo(0);
assertThat(comparator.compare(
"/MERGE_LIST", "/MERGE_LIST")).isEqualTo(0);
}
@Test
public void cppExtensions() {
assertThat(comparator.compare("abc/file.h", "abc/file.cc")).isLessThan(0);
assertThat(comparator.compare("abc/file.c", "abc/file.hpp"))
.isGreaterThan(0);
assertThat(comparator.compare("abc..xyz.file.h", "abc.xyz.file.cc"))
.isLessThan(0);
}
}