package net.java.textilej.parser.builder;
import java.io.Writer;
import java.net.URI;
import java.util.regex.Pattern;
import net.java.textilej.parser.DocumentBuilder;
import net.java.textilej.util.DefaultXmlStreamWriter;
import net.java.textilej.util.XmlStreamWriter;
public abstract class AbstractXmlDocumentBuilder extends DocumentBuilder {
private static final Pattern ABSOLUTE_URL_PATTERN = Pattern.compile("[a-zA-Z]{3,8}://?.*");
protected final XmlStreamWriter writer;
protected URI base;
protected boolean baseInHead = false;
public AbstractXmlDocumentBuilder(Writer out) {
writer = createXmlStreamWriter(out);
}
public AbstractXmlDocumentBuilder(XmlStreamWriter writer) {
this.writer = writer;
}
protected XmlStreamWriter createXmlStreamWriter(Writer out) {
XmlStreamWriter writer = new DefaultXmlStreamWriter(out);
return writer;
}
@Override
public void characters(String text) {
writer.writeCharacters(text);
}
protected String makeUrlAbsolute(String url) {
if (base == null || baseInHead || url == null) {
return url;
}
if (ABSOLUTE_URL_PATTERN.matcher(url).matches()) {
return url;
}
if (url.startsWith("#")) {
return url;
}
String absoluteUrl = base.toString();
if (!absoluteUrl.endsWith("/") && !url.startsWith("/")) {
absoluteUrl = absoluteUrl+'/';
}
absoluteUrl = absoluteUrl+url;
return absoluteUrl;
}
/**
* Set the base URI of the HTML document. Causes all relative URLs to be prefixed with the base URI.
* The base URI is assumed to refer to a foler-like resource.
*
* @param uri the URI, or null
*/
public void setBase(URI uri) {
base = uri;
}
/**
* Get the base URI of the HTML document. A not-null value causes all relative URLs to be prefixed with the base URI.
* The base URI is assumed to refer to a foler-like resource.
*/
public URI getBase() {
return base;
}
/**
* Indicate if the {@link #getBase() base URI} should be emitted into the <head> of the document.
* The default value is false.
* Ignored unless {@link #isEmitAsDocument()}
*/
public boolean isBaseInHead() {
return baseInHead;
}
/**
* Indicate if the {@link #getBase() base URI} should be emitted into the <head> of the document.
* The default value is false.
* Ignored unless {@link #isEmitAsDocument()}
*/
public void setBaseInHead(boolean baseInHead) {
this.baseInHead = baseInHead;
}
}