/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.apache.karaf.features.internal.resolver;
import java.util.Map;
import org.osgi.framework.Version;
import org.osgi.resource.Resource;
/**
*/
public abstract class BaseClause {
public abstract Resource getResource();
public abstract String getNamespace();
public abstract Map<String, String> getDirectives();
public abstract Map<String, Object> getAttributes();
@Override
public String toString() {
return toString(getResource(), getNamespace(), getAttributes(), getDirectives());
}
public static String toString(Resource res, String namespace, Map<String, Object> attrs, Map<String, String> dirs) {
StringBuilder sb = new StringBuilder();
if (res != null) {
sb.append("[").append(res).append("] ");
}
sb.append(namespace);
for (String key : attrs.keySet()) {
sb.append("; ");
append(sb, key, attrs.get(key), true);
}
for (String key : dirs.keySet()) {
sb.append("; ");
append(sb, key, dirs.get(key), false);
}
return sb.toString();
}
private static void append(StringBuilder sb, String key, Object val, boolean attribute) {
sb.append(key);
if (val instanceof Version) {
sb.append(":Version=");
sb.append(val);
} else if (val instanceof Long) {
sb.append(":Long=");
sb.append(val);
} else if (val instanceof Double) {
sb.append(":Double=");
sb.append(val);
} else if (val instanceof Iterable) {
Iterable it = (Iterable) val;
String scalar = null;
for (Object o : it) {
String ts;
if (o instanceof String) {
ts = "String";
} else if (o instanceof Long) {
ts = "Long";
} else if (o instanceof Double) {
ts = "Double";
} else if (o instanceof Version) {
ts = "Version";
} else {
throw new IllegalArgumentException("Unsupported scalar type: " + o);
}
if (scalar == null) {
scalar = ts;
} else if (!scalar.equals(ts)) {
throw new IllegalArgumentException("Unconsistent list type for attribute " + key);
}
}
sb.append(":List<").append(scalar).append(">=");
sb.append("\"");
boolean first = true;
for (Object o : it) {
if (first) {
first = false;
} else {
sb.append(",");
}
sb.append(o.toString().replace("\"", "\\\"").replace(",", "\\,"));
}
sb.append("\"");
} else {
sb.append(attribute ? "=" : ":=");
String s = val.toString();
if (s.matches("[0-9a-zA-Z_\\-.]*")) {
sb.append(s);
} else {
sb.append("\"").append(s.replace("\"", "\\\\")).append("\"");
}
}
}
}