/**
* Copyright 2007 Google 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.tonicsystems.jarjar.transform.asm;
import com.tonicsystems.jarjar.transform.config.ClassRename;
import com.tonicsystems.jarjar.transform.config.PatternUtils;
import com.tonicsystems.jarjar.util.ClassNameUtils;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.annotation.Nonnull;
import org.objectweb.asm.commons.Remapper;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class PackageRemapper extends Remapper {
private static final Logger LOG = LoggerFactory.getLogger(PackageRemapper.class);
private static final String RESOURCE_SUFFIX = "RESOURCE";
private final List<ClassRename> patterns;
private final Map<String, String> typeCache = new HashMap<String, String>();
private final Map<String, String> pathCache = new HashMap<String, String>();
private final Map<Object, String> valueCache = new HashMap<Object, String>();
public PackageRemapper(@Nonnull Iterable<? extends ClassRename> patterns) {
this.patterns = PatternUtils.toList(patterns);
}
public PackageRemapper(@Nonnull ClassRename... patterns) {
this(Arrays.asList(patterns));
}
public void addRule(@Nonnull ClassRename pattern) {
this.patterns.add(pattern);
}
@Override
public String map(String key) {
String s = typeCache.get(key);
if (s == null) {
s = replaceHelper(key);
if (key.equals(s))
s = null;
typeCache.put(key, s);
}
return s;
}
public String mapPath(String path) {
String s = pathCache.get(path);
if (s == null) {
s = path;
int slash = s.lastIndexOf('/');
String end;
if (slash < 0) {
end = s;
s = RESOURCE_SUFFIX;
} else {
end = s.substring(slash + 1);
s = s.substring(0, slash + 1) + RESOURCE_SUFFIX;
}
boolean absolute = s.startsWith("/");
if (absolute)
s = s.substring(1);
s = replaceHelper(s);
if (absolute)
s = "/" + s;
if (s.indexOf(RESOURCE_SUFFIX) < 0)
return path;
s = s.substring(0, s.length() - RESOURCE_SUFFIX.length()) + end;
pathCache.put(path, s);
}
return s;
}
@Override
public Object mapValue(Object value) {
if (value instanceof String) {
String s = valueCache.get(value);
if (s == null) {
s = (String) value;
if (ClassNameUtils.isArrayForName(s)) {
String desc1 = s.replace('.', '/');
String desc2 = mapDesc(desc1);
if (!desc2.equals(desc1))
return desc2.replace('/', '.');
} else {
s = mapPath(s);
if (s.equals(value)) {
boolean hasDot = s.indexOf('.') >= 0;
boolean hasSlash = s.indexOf('/') >= 0;
if (!(hasDot && hasSlash)) {
if (hasDot) {
s = replaceHelper(s.replace('.', '/')).replace('/', '.');
} else {
s = replaceHelper(s);
}
}
}
}
valueCache.put(value, s);
}
// TODO: add back class name to verbose message
if (!s.equals(value))
if (LOG.isDebugEnabled())
LOG.debug("Changed \"" + value + "\" -> \"" + s + "\"");
return s;
} else {
return super.mapValue(value);
}
}
private String replaceHelper(String value) {
for (ClassRename pattern : patterns) {
String result = pattern.replace(value);
if (result != null)
return result;
}
return value;
}
}