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/*
* Copyright 2000-2009 JetBrains s.r.o.
*
* 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.intellij.openapi.util;
import com.intellij.openapi.util.text.StringUtil;
import com.intellij.util.ArrayUtil;
import org.jdom.Element;
import org.jetbrains.annotations.NonNls;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import java.util.Arrays;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
public class JDOMExternalizer {
private JDOMExternalizer() {
}
public static void write(Element root, @NonNls String name, String value) {
@NonNls Element element = new Element("setting");
element.setAttribute("name", name);
element.setAttribute("value", value == null ? "" : value);
root.addContent(element);
}
public static void write(Element root, @NonNls String name, boolean value) {
write(root, name, Boolean.toString(value));
}
public static void write(Element root, String name, int value) {
write(root, name, Integer.toString(value));
}
public static boolean readBoolean(Element root, @NonNls String name) {
return Boolean.valueOf(readString(root, name)).booleanValue();
}
public static int readInteger(Element root, String name, int defaultValue) {
try {
return Integer.valueOf(readString(root, name)).intValue();
}
catch (NumberFormatException e) {
return defaultValue;
}
}
public static String readString(@NonNls Element root, @NonNls String name) {
List list = root.getChildren("setting");
for (Object aList : list) {
@NonNls Element element = (Element)aList;
String childName = element.getAttributeValue("name");
if (Comparing.strEqual(childName, name)) {
return element.getAttributeValue("value");
}
}
return null;
}
public static void writeMap(Element root, Map<String, String> map, @NonNls @Nullable String rootName, @NonNls String entryName) {
Element mapRoot;
if (StringUtil.isNotEmpty(rootName)) {
mapRoot = new Element(rootName);
root.addContent(mapRoot);
}
else {
mapRoot = root;
}
final String[] names = ArrayUtil.toStringArray(map.keySet());
Arrays.sort(names);
for (String name : names) {
@NonNls final Element element = new Element(entryName);
element.setAttribute("name", name);
final String value = map.get(name);
if (value != null) {
element.setAttribute("value", value);
}
mapRoot.addContent(element);
}
}
public static void readMap(Element root, Map<String, String> map, @NonNls @Nullable String rootName, @NonNls String entryName) {
Element mapRoot;
if (StringUtil.isNotEmpty(rootName)) {
mapRoot = root.getChild(rootName);
}
else {
mapRoot = root;
}
if (mapRoot == null) return;
for (@NonNls Element element : (List<Element>)mapRoot.getChildren(entryName)) {
final String name = element.getAttributeValue("name");
if (name != null) {
final String value = element.getAttributeValue("value");
map.put(name, value);
}
}
}
/**
* Saves a pack of strings to some attribte. I.e: [tag attr="value"]
* @param parent parent element (where to add newly created tags)
* @param nodeName node name (tag, in our example)
* @param attrName attribute name (attr, in our example)
* @param values a pack of values to add
* @see #loadStringsList(org.jdom.Element, String, String)
*/
public static void saveStringsList(@NotNull final Element parent,
@NotNull final String nodeName,
@NotNull final String attrName,
@NotNull final String... values) {
for (final String value : values) {
final Element node = new Element(nodeName);
node.setAttribute(attrName, value);
parent.addContent(node);
}
}
@NotNull
public static List<String> loadStringsList(Element element, String rootName, String attrName) {
final List<String> paths = new LinkedList<String>();
if (element != null) {
@NotNull final List list = element.getChildren(rootName);
for (Object o : list) {
paths.add(((Element)o).getAttribute(attrName).getValue());
}
}
return paths;
}
}
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