143 lines
4.0 KiB
Java
Executable File
143 lines
4.0 KiB
Java
Executable File
package org.gcube.dataanalysis.wps.statisticalmanager.synchserver.utils;
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import java.io.BufferedReader;
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import java.io.BufferedWriter;
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import java.io.File;
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import java.io.FileReader;
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import java.io.FileWriter;
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import java.io.IOException;
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import java.util.ArrayList;
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import javax.xml.parsers.SAXParser;
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import javax.xml.parsers.SAXParserFactory;
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import org.apache.commons.lang.StringEscapeUtils;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.xml.sax.Attributes;
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import org.xml.sax.SAXException;
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import org.xml.sax.helpers.DefaultHandler;
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public class GML2CSV {
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private static final Logger LOGGER = LoggerFactory.getLogger(GML2CSV.class);
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public static void convertHTMLToXML(String gmlhtmlFile,String gmlxmlFile) throws Exception{
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BufferedWriter filew = new BufferedWriter(new FileWriter(new File(gmlxmlFile)));
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BufferedReader filer = new BufferedReader(new FileReader(new File(gmlhtmlFile)));
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String line = filer.readLine();
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while (line !=null){
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filew.write(StringEscapeUtils.unescapeHtml(line)+"\n");
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line = filer.readLine();
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}
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filer.close();
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filew.close();
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}
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public static void parseGML(String gmlFile, String csvFile) {
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try {
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String gmlXMLFile = gmlFile+".xml";
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convertHTMLToXML(gmlFile, gmlXMLFile);
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gmlFile=gmlXMLFile;
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SAXParserFactory factory = SAXParserFactory.newInstance();
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SAXParser saxParser = factory.newSAXParser();
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final BufferedWriter filew = new BufferedWriter(new FileWriter(new File(csvFile)));
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DefaultHandler handler = new DefaultHandler() {
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String lastTagContent = "";
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int tagcounter = 0;
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int maxtags = 0;
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boolean startrecording = false;
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boolean skiprecording = false;
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boolean headerwritten = false;
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ArrayList<String> row = new ArrayList<String>();
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ArrayList<String> header = new ArrayList<String>();
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public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException {
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if (qName.equals("gml:featureMember"))
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startrecording = true;
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if (startrecording && qName.equals("ogr:geometryProperty"))
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skiprecording = true;
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if (startrecording & !skiprecording) {
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// System.out.println("start qName:"+qName);
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tagcounter++;
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if (maxtags < tagcounter)
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maxtags = tagcounter;
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}
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}
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public void endElement(String uri, String localName, String qName) throws SAXException {
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if (startrecording && !skiprecording) {
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if (tagcounter == maxtags){
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if (lastTagContent!=null && lastTagContent.trim().length()>0){
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row.add(lastTagContent);
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String headerStr = qName.substring(qName.indexOf(":")+1);
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header.add(headerStr);
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}
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}
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else{
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//write the buffer
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try {
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if (row.size()>0){
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if (!headerwritten){
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String stringheader = Array2CSVString(header);
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filew.write(stringheader+"\n");
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headerwritten=true;
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}
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String stringrow = Array2CSVString(row);
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filew.write(stringrow+"\n");
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row = new ArrayList<String>();
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}
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} catch (IOException e) {
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}
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}
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tagcounter--;
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}
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if (qName.equals("ogr:geometryProperty"))
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skiprecording = false;
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}
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public void characters(char ch[], int start, int length) throws SAXException {
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if (startrecording & !skiprecording) {
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String element = new String(ch, start, length);
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lastTagContent = element;
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}
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}
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};
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saxParser.parse(gmlFile, handler);
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filew.close();
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} catch (Exception e) {
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LOGGER.error("error parsing GML ",e);
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}
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}
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public static String Array2CSVString(ArrayList<String> row){
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StringBuffer sb = new StringBuffer();
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int rowl = row.size();
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//TODO check other conditions to quote
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for (int i=0;i<rowl;i++){
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String csvr = row.get(i).trim();
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if (csvr.contains(","))
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csvr = "\""+csvr+"\"";
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sb.append(csvr);
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if (i<rowl-1)
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sb.append(",");
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}
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return sb.toString();
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}
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}
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