package cn.edu.pku.dr.requirement.elicitation.tools;
import org.htmlparser.Node;
import org.htmlparser.NodeFilter;
import org.htmlparser.Parser;
import org.htmlparser.filters.CssSelectorNodeFilter;
import org.htmlparser.util.NodeList;
import org.htmlparser.util.ParserException;
import easyJ.business.proxy.SingleDataProxy;
import cn.edu.pku.dr.requirement.elicitation.data.Description;
import org.htmlparser.nodes.TextNode;
public class HtmlTransformer {
private static final String TEST_STRING = "<span id=\"L1\">"
+ "<span id=\"L2\">This is a level 2 span</span></span>";
private static final String GRAPH_STRING_ID = "__Graph_String__";
private static final String LINE_BREAK = "__#Line_Break#__";
public static final String SWIMLANE_SEP = "__#Swimlane_Separator#__";
protected static Node getElementById(Parser parser, String id) {
parser.reset();
NodeFilter filter = new CssSelectorNodeFilter("#" + id);
try {
NodeList list = parser.extractAllNodesThatMatch(filter);
if (list.size() > 0) {
return list.elementAt(0);
}
} catch (ParserException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return null;
}
public HtmlTransformer() {
}
public static String getGraphSourceString(String html) {
try {
Parser parser = new Parser(html);
Node node = getElementById(parser, GRAPH_STRING_ID);
return node != null ? node.toPlainTextString().replaceAll(
LINE_BREAK, "\n") : "";
} catch (ParserException e) {
e.printStackTrace();
}
return "";
}
public void testGetElementById() {
// Should output:
// This is a level 2 span
try {
Parser parser = new Parser(TEST_STRING);
Node node = getElementById(parser, "L2");
if (node != null) {
System.out.println(node.toPlainTextString());
} else {
System.out.println("null");
}
} catch (ParserException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}