/*
* Copyright 2012-present Facebook, Inc.
*
* 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.facebook.buck.android;
import com.google.common.collect.ImmutableMap;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/** Parser for ProGuard-generated mapping files. Currently only handles class mapping. */
public class ProguardMapping {
/** Utility class: do not instantiate. */
private ProguardMapping() {}
private static final Pattern CLASS_LINE_PATTERN = Pattern.compile("([-\\w.$]+) -> ([-\\w.$]+):");
public static ImmutableMap<String, String> readClassMapping(Iterable<String> lines) {
ImmutableMap.Builder<String, String> classMappingBuilder = ImmutableMap.builder();
for (String line : lines) {
if (line.charAt(0) == ' ') {
// This is a member mapping, which we don't handle yet.
continue;
}
Matcher matcher = CLASS_LINE_PATTERN.matcher(line);
if (!matcher.matches()) {
throw new IllegalArgumentException("Invalid line in proguard mapping: " + line);
}
classMappingBuilder.put(matcher.group(1), matcher.group(2));
}
return classMappingBuilder.build();
}
}