/**
* (The MIT License)
*
* Copyright (c) 2008 - 2012:
*
* * {Aaron Patterson}[http://tenderlovemaking.com]
* * {Mike Dalessio}[http://mike.daless.io]
* * {Charles Nutter}[http://blog.headius.com]
* * {Sergio Arbeo}[http://www.serabe.com]
* * {Patrick Mahoney}[http://polycrystal.org]
* * {Yoko Harada}[http://yokolet.blogspot.com]
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* 'Software'), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
package nokogiri;
import static nokogiri.internals.NokogiriHelpers.getNokogiriClass;
import static nokogiri.internals.NokogiriHelpers.rubyStringToString;
import nokogiri.internals.NokogiriHelpers;
import nokogiri.internals.SaveContextVisitor;
import org.jruby.Ruby;
import org.jruby.RubyClass;
import org.jruby.RubyString;
import org.jruby.anno.JRubyClass;
import org.jruby.anno.JRubyMethod;
import org.jruby.runtime.ThreadContext;
import org.jruby.runtime.builtin.IRubyObject;
import org.w3c.dom.Attr;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
/**
* Class for Nokogiri::XML::Attr
*
* @author sergio
* @author Yoko Harada <yokolet@gmail.com>
*/
@JRubyClass(name="Nokogiri::XML::Attr", parent="Nokogiri::XML::Node")
public class XmlAttr extends XmlNode{
public static final String[] HTML_BOOLEAN_ATTRS = {
"checked", "compact", "declare", "defer", "disabled", "ismap",
"multiple", "nohref", "noresize", "noshade", "nowrap", "readonly",
"selected"
};
public XmlAttr(Ruby ruby, Node attr){
super(ruby, getNokogiriClass(ruby, "Nokogiri::XML::Attr"), attr);
}
public XmlAttr(Ruby ruby, RubyClass rubyClass) {
super(ruby, rubyClass);
}
public XmlAttr(Ruby ruby, RubyClass rubyClass, Node attr){
super(ruby, rubyClass, attr);
}
@Override
protected void init(ThreadContext context, IRubyObject[] args) {
if (args.length < 2) {
throw getRuntime().newArgumentError(args.length, 2);
}
IRubyObject doc = args[0];
IRubyObject content = args[1];
if(!(doc instanceof XmlDocument)) {
final String msg =
"document must be an instance of Nokogiri::XML::Document";
throw getRuntime().newArgumentError(msg);
}
XmlDocument xmlDoc = (XmlDocument)doc;
String str = rubyStringToString(content);
Node attr = xmlDoc.getDocument().createAttribute(str);
setNode(context, attr);
}
// this method is called from XmlNode.setNode()
// if the node is attribute, and its name has prefix "xml"
// the default namespace should be registered for this attribute
void setNamespaceIfNecessary(Ruby runtime) {
if ("xml".equals(node.getPrefix())) {
XmlNamespace.createDefaultNamespace(runtime, node);
}
}
private boolean isHtmlBooleanAttr() {
String name = node.getNodeName().toLowerCase();
for(String s : HTML_BOOLEAN_ATTRS) {
if(s.equals(name)) return true;
}
return false;
}
private String serializeAttrTextContent(String s, boolean htmlDoc) {
if (s == null) return "";
char[] c = s.toCharArray();
StringBuffer buffer = new StringBuffer(c.length);
for(int i = 0; i < c.length; i++) {
switch(c[i]){
case '\n': buffer.append("
"); break;
case '\r': buffer.append("
"); break;
case '\t': buffer.append(" "); break;
case '"': if (htmlDoc) buffer.append("%22");
else buffer.append(""");
break;
case '<': buffer.append("<"); break;
case '>': buffer.append(">"); break;
case '&': buffer.append("&"); break;
default: buffer.append(c[i]);
}
}
return buffer.toString();
}
@Override
@JRubyMethod(name = {"content", "value", "to_s"})
public IRubyObject content(ThreadContext context) {
if (content != null && !content.isNil()) return content;
if (node == null) return context.getRuntime().getNil();
String attrValue = ((Attr)node).getValue();
if (attrValue == null) return context.getRuntime().getNil();
return RubyString.newString(context.getRuntime(), attrValue);
}
@JRubyMethod(name = {"value=", "content="})
public IRubyObject value_set(ThreadContext context, IRubyObject content){
Attr attr = (Attr) node;
attr.setValue(rubyStringToString(XmlNode.encode_special_chars(context, content)));
setContent(content);
return content;
}
@Override
protected IRubyObject getNodeName(ThreadContext context) {
if (name != null) return name;
String attrName = ((Attr)node).getName();
if (!(doc instanceof HtmlDocument)) attrName = NokogiriHelpers.getLocalPart(attrName);
return attrName == null ? context.getRuntime().getNil() : RubyString.newString(context.getRuntime(), attrName);
}
@Override
public void accept(ThreadContext context, SaveContextVisitor visitor) {
visitor.enter((Attr)node);
visitor.leave((Attr)node);
}
private boolean isHtml(ThreadContext context) {
return document(context).getMetaClass().isKindOfModule(getNokogiriClass(context.getRuntime(), "Nokogiri::HTML::Document"));
}
@Override
public IRubyObject unlink(ThreadContext context) {
Attr attr = (Attr) node;
Element parent = attr.getOwnerElement();
parent.removeAttributeNode(attr);
return this;
}
}