/*
* Copyright 2014 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.api.plugins.quality.internal.findbugs;
import org.gradle.api.GradleException;
import org.gradle.api.JavaVersion;
import org.gradle.util.VersionNumber;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class FindBugsClasspathValidator {
private final JavaVersion javaVersion;
public FindBugsClasspathValidator(JavaVersion javaVersion) {
this.javaVersion = javaVersion;
}
public void validateClasspath(Iterable<String> fileNamesOnClasspath) {
VersionNumber v = getFindbugsVersion(fileNamesOnClasspath);
boolean java6orLess = javaVersion.compareTo(JavaVersion.VERSION_1_7) < 0;
boolean findbugs3orMore = v.getMajor() > 2;
if (java6orLess && findbugs3orMore) {
throw new FindBugsVersionTooHighException("The version of FindBugs (" + v + ") inferred from FindBugs classpath is too high to work with currently used Java version (" + javaVersion + ")."
+ " Please use lower version of FindBugs or use newer version of Java. Inspected FindBugs classpath: " + fileNamesOnClasspath);
}
boolean java8orMore = javaVersion.compareTo(JavaVersion.VERSION_1_7) > 0;
boolean findbugs2orLess = v.getMajor() < 3;
if (java8orMore && findbugs2orLess) {
throw new FindBugsVersionTooLowException("The version of FindBugs (" + v + ") inferred from FindBugs classpath is too low to work with currently used Java version (" + javaVersion + ")."
+ " Please use higher version of FindBugs. Inspected FindBugs classpath: " + fileNamesOnClasspath);
}
}
static class FindBugsVersionTooLowException extends GradleException {
FindBugsVersionTooLowException(String message) {
super(message);
}
}
static class FindBugsVersionTooHighException extends GradleException {
FindBugsVersionTooHighException(String message) {
super(message);
}
}
private VersionNumber getFindbugsVersion(Iterable<String> classpath) {
for (String f: classpath) {
Matcher m = Pattern.compile("findbugs-(.*)\\.jar").matcher(f);
if (m.matches()) {
return VersionNumber.parse(m.group(1));
}
}
throw new GradleException("Unable to infer the version of FindBugs from currently specified FindBugs classpath: " + classpath);
}
}