package org.eclipse.jgit.revwalk.filter;
import java.io.IOException;
import java.util.Collection;
import org.eclipse.jgit.errors.IncorrectObjectTypeException;
import org.eclipse.jgit.errors.MissingObjectException;
import org.eclipse.jgit.internal.JGitText;
import org.eclipse.jgit.revwalk.RevCommit;
import org.eclipse.jgit.revwalk.RevWalk;
public abstract class OrRevFilter extends RevFilter {
public static RevFilter create(RevFilter a, RevFilter b) {
if (a == ALL || b == ALL)
return ALL;
return new Binary(a, b);
}
public static RevFilter create(RevFilter[] list) {
if (list.length == 2)
return create(list[0], list[1]);
if (list.length < 2)
throw new IllegalArgumentException(JGitText.get().atLeastTwoFiltersNeeded);
final RevFilter[] subfilters = new RevFilter[list.length];
System.arraycopy(list, 0, subfilters, 0, list.length);
return new List(subfilters);
}
public static RevFilter create(Collection<RevFilter> list) {
if (list.size() < 2)
throw new IllegalArgumentException(JGitText.get().atLeastTwoFiltersNeeded);
final RevFilter[] subfilters = new RevFilter[list.size()];
list.toArray(subfilters);
if (subfilters.length == 2)
return create(subfilters[0], subfilters[1]);
return new List(subfilters);
}
private static class Binary extends OrRevFilter {
private final RevFilter a;
private final RevFilter b;
private final boolean requiresCommitBody;
Binary(RevFilter one, RevFilter two) {
a = one;
b = two;
requiresCommitBody = a.requiresCommitBody()
|| b.requiresCommitBody();
}
@Override
public boolean include(RevWalk walker, RevCommit c)
throws MissingObjectException, IncorrectObjectTypeException,
IOException {
return a.include(walker, c) || b.include(walker, c);
}
@Override
public boolean requiresCommitBody() {
return requiresCommitBody;
}
@Override
public RevFilter clone() {
return new Binary(a.clone(), b.clone());
}
@SuppressWarnings("nls")
@Override
public String toString() {
return "(" + a.toString() + " OR " + b.toString() + ")";
}
}
private static class List extends OrRevFilter {
private final RevFilter[] subfilters;
private final boolean requiresCommitBody;
List(RevFilter[] list) {
subfilters = list;
boolean rcb = false;
for (RevFilter filter : subfilters)
rcb |= filter.requiresCommitBody();
requiresCommitBody = rcb;
}
@Override
public boolean include(RevWalk walker, RevCommit c)
throws MissingObjectException, IncorrectObjectTypeException,
IOException {
for (RevFilter f : subfilters) {
if (f.include(walker, c))
return true;
}
return false;
}
@Override
public boolean requiresCommitBody() {
return requiresCommitBody;
}
@Override
public RevFilter clone() {
final RevFilter[] s = new RevFilter[subfilters.length];
for (int i = 0; i < s.length; i++)
s[i] = subfilters[i].clone();
return new List(s);
}
@Override
public String toString() {
final StringBuilder r = new StringBuilder();
r.append("(");
for (int i = 0; i < subfilters.length; i++) {
if (i > 0)
r.append(" OR ");
r.append(subfilters[i].toString());
}
r.append(")");
return r.toString();
}
}
}