package com.atlassian.maven.plugins.jgitflow.rewrite;
import java.util.List;
import com.google.common.base.Predicate;
import org.jdom2.Element;
import org.jdom2.Namespace;
import static com.google.common.collect.Lists.newArrayList;
/**
* @since version
*/
public class ProjectChangeUtils
{
public static boolean definesProperty(String propName, Element root, Namespace ns)
{
Element properties = getElementOrNull(root, "properties", ns);
if(null != properties)
{
return null != getElementOrNull(properties,propName,ns);
}
return false;
}
public static Element getOrCreateElement(Element container, String path, Namespace ns)
{
Element last = container;
for (String pathName : path.split("/"))
{
last = container.getChild(pathName, ns);
if (last == null)
{
last = new Element(pathName,ns);
container.addContent(" ").addContent(last).addContent("\n ");
}
container = last;
}
return last;
}
public static Element getElementOrNull(Element container, String path, Namespace ns)
{
for (String pathName : path.split("/"))
{
if (container != null)
{
container = container.getChild(pathName, ns);
}
}
return container;
}
public static Namespace getNamespaceOrNull(Element container)
{
Namespace ns = container.getNamespace();
if(ns.equals(Namespace.NO_NAMESPACE))
{
return null;
}
return ns;
}
public static List<Element> getElementListOrEmpty(Element container, String path, Namespace ns)
{
if(null == container)
{
return newArrayList();
}
List<Element> elements = newArrayList();
String[] paths = path.split("/");
int lastIndex = paths.length - 1;
for(int i=0; i<paths.length; i++)
{
String pathName = paths[i];
if(i != lastIndex)
{
if(null != container)
{
container = container.getChild(pathName, ns);
}
else
{
break;
}
}
else
{
if(null != container)
{
List<Element> el = container.getChildren(pathName,ns);
if(null != el)
{
elements = el;
}
}
}
}
return elements;
}
public static Predicate<? super Element> childElementValue(final String name, final String value, final Namespace ns)
{
return new Predicate<Element>()
{
public boolean apply(Element input)
{
Element child = input.getChild(name, ns);
return (child == null) ? value.equals("") : value.equals(child.getText());
}
};
}
}