| // Copyright 2014 The Bazel Authors. All rights reserved. |
| // |
| // 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.devtools.build.lib.events; |
| |
| import java.util.regex.Pattern; |
| |
| /** |
| * An output filter for warnings. |
| */ |
| public interface OutputFilter { |
| |
| /** An output filter that matches everything. */ |
| public static final OutputFilter OUTPUT_EVERYTHING = new OutputFilter() { |
| @Override |
| public boolean showOutput(String tag) { |
| return true; |
| } |
| }; |
| |
| /** An output filter that matches nothing. */ |
| public static final OutputFilter OUTPUT_NOTHING = new OutputFilter() { |
| @Override |
| public boolean showOutput(String tag) { |
| return false; |
| } |
| }; |
| |
| /** |
| * Returns true iff the given tag matches the output filter. |
| */ |
| boolean showOutput(String tag); |
| |
| /** |
| * An output filter using regular expression matching. |
| */ |
| public static final class RegexOutputFilter implements OutputFilter { |
| /** Returns an output filter for the given regex (by compiling it). */ |
| public static OutputFilter forRegex(String regex) { |
| return new RegexOutputFilter(Pattern.compile(regex)); |
| } |
| |
| /** Returns an output filter for the given pattern. */ |
| public static OutputFilter forPattern(Pattern pattern) { |
| return new RegexOutputFilter(pattern); |
| } |
| |
| private final Pattern pattern; |
| |
| private RegexOutputFilter(Pattern pattern) { |
| this.pattern = pattern; |
| } |
| |
| @Override |
| public boolean showOutput(String tag) { |
| return pattern.matcher(tag).find(); |
| } |
| |
| @Override |
| public String toString() { |
| return pattern.toString(); |
| } |
| } |
| } |