/*
* Copyright 2013 the original author or authors.
*
* 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 org.gradle.integtests.tooling.fixture;
import org.gradle.api.specs.Spec;
import org.gradle.api.specs.Specs;
import org.gradle.util.GradleVersion;
import java.util.ArrayList;
import java.util.List;
public class GradleVersionSpec {
public static Spec<GradleVersion> toSpec(String constraint) {
String trimmed = constraint.trim();
if (trimmed.equals("current")) {
return new Spec<GradleVersion>() {
public boolean isSatisfiedBy(GradleVersion element) {
return element.equals(GradleVersion.current());
}
};
}
if (trimmed.equals("!current")) {
return new Spec<GradleVersion>() {
public boolean isSatisfiedBy(GradleVersion element) {
return !element.equals(GradleVersion.current());
}
};
}
if (trimmed.startsWith("=")) {
final GradleVersion target = GradleVersion.version(trimmed.substring(1)).getBaseVersion();
return new Spec<GradleVersion>() {
public boolean isSatisfiedBy(GradleVersion element) {
return element.getBaseVersion().equals(target);
}
};
}
List<Spec> specs = new ArrayList<Spec>();
String[] patterns = trimmed.split("\\s+");
for (String value : patterns) {
if (value.startsWith(">=")) {
final GradleVersion minVersion = GradleVersion.version(value.substring(2));
specs.add(new Spec<GradleVersion>() {
public boolean isSatisfiedBy(GradleVersion element) {
return element.getBaseVersion().compareTo(minVersion) >= 0;
}
});
} else if (value.startsWith(">")) {
final GradleVersion minVersion = GradleVersion.version(value.substring(1));
specs.add(new Spec<GradleVersion>() {
public boolean isSatisfiedBy(GradleVersion element) {
return element.getBaseVersion().compareTo(minVersion) > 0;
}
});
} else if (value.startsWith("<=")) {
final GradleVersion maxVersion = GradleVersion.version(value.substring(2));
specs.add(new Spec<GradleVersion>() {
public boolean isSatisfiedBy(GradleVersion element) {
return element.getBaseVersion().compareTo(maxVersion) <= 0;
}
});
} else if (value.startsWith("<")) {
final GradleVersion maxVersion = GradleVersion.version(value.substring(1));
specs.add(new Spec<GradleVersion>() {
public boolean isSatisfiedBy(GradleVersion element) {
return element.getBaseVersion().compareTo(maxVersion) < 0;
}
});
} else {
throw new RuntimeException(String.format("Unsupported version range '%s' specified in constraint '%s'. Supported formats: '>=nnn' or '<=nnn' or space-separate patterns", value, constraint));
}
}
return Specs.and(specs.toArray(new Spec[specs.size()]));
}
}