/**
* Writes the XML Declaration and the opening RDF tag to the print Writer. Encoding attribute is
* specified as the encoding argument.
*
* @param out PrintWriter
* @throws IOException
*/
protected void writeHeader(OutputStreamWriter out) throws IOException {
// validate
if (out != null) {
// wrapper for output stream writer (enable autoflushing)
PrintWriter writer = new PrintWriter(out, true);
// get encoding from the Encoding map
String encoding = EncodingMap.getJava2IANAMapping(out.getEncoding());
// only insert encoding if there is a value
if (encoding != null) {
// print opening tags <?xml version="1.0" encoding=*encoding*?>
writer.println("<?xml version=\"1.0\" encoding=\"" + encoding + "\"?>");
} else {
// print opening tags <?xml version="1.0"?>
writer.println("<?xml version=\"1.0\"?>");
}
// print the Entities
this.writeXMLEntities(writer);
// print the opening RDF tag (including namespaces)
this.writeRDFHeader(writer);
} else {
throw new IllegalArgumentException("Cannot write to null Writer.");
}
}
/**
* Create the directory path for the file to be generated, construct FileOutputStream and
* OutputStreamWriter depending upon docencoding.
*
* @param path The directory path to be created for this file.
* @param filename File Name to which the PrintWriter will do the Output.
* @param docencoding Encoding to be used for this file.
* @exception IOException Exception raised by the FileWriter is passed on to next level.
* @exception UnSupportedEncodingException Exception raised by the OutputStreamWriter is passed on
* to next level.
* @return Writer Writer for the file getting generated.
* @see java.io.FileOutputStream
* @see java.io.OutputStreamWriter
*/
public static Writer genWriter(
Configuration configuration, String path, String filename, String docencoding)
throws IOException, UnsupportedEncodingException {
FileOutputStream fos;
if (path != null) {
DirectoryManager.createDirectory(configuration, path);
fos = new FileOutputStream(((path.length() > 0) ? path + File.separator : "") + filename);
} else {
fos = new FileOutputStream(filename);
}
if (docencoding == null) {
OutputStreamWriter oswriter = new OutputStreamWriter(fos);
docencoding = oswriter.getEncoding();
return oswriter;
} else {
return new OutputStreamWriter(fos, docencoding);
}
}
