/* * DataFileParser.java * * This file contains functions to parser the data XML file for WEPS crops and operations. * The parsing is done with the SAX parser and the important information is saved * in internal data structures. * * Created on July 27, 2004, 3:24 PM */ package ex1; import de.schlichtherle.truezip.file.TFile; import de.schlichtherle.truezip.file.TFileInputStream; import java.io.IOException; import javax.xml.parsers.ParserConfigurationException; import org.xml.sax.*; import org.xml.sax.helpers.DefaultHandler; import javax.xml.parsers.SAXParserFactory; import javax.xml.parsers.SAXParser; /** * This class contains functions to parse the data XML file for WEPS crops and operations. * The parsing is done with the SAX parser and the important information is saved * in internal data structures. * * @author jrf */ public class DataFileParser extends DefaultHandler { DefnFileParser pListing; // link to main parameter listing private boolean grabName; // true if we are getting a parameter name private boolean grabValue; // true if we are getting a parameter value private boolean grabObjectName; private String name; // current parameter name read private String theVal; // current parameter value read (as string) /** * */ public String objectName; private boolean grabId; private boolean grabCode; private boolean inIdSection; private String theCode, theId; private final String mcrew_cfg; // directory where DTD files can be found private final boolean isCropXml; // true if we are parsing a crop files private WepsDBFile currentFile; // link to file info we are parsing /** * Creates a new instance to handle parsing detail CROP or OPRN files * * * @param listing parameter dictionary constructed from mcrew config files * @param topdir directory of mcrew files * @param isCrop true if we are parsing a crop xml file (simpler structure), false for operations * */ public DataFileParser(DefnFileParser listing, String topdir, boolean isCrop) { pListing = listing; isCropXml = isCrop; //actionStores = new ArrayList(); if (topdir.endsWith("/") || topdir.endsWith("\\")) { } else { topdir += "/"; } mcrew_cfg = topdir; } /** * Parses the weps file contained in the structure. * * @param xfile File to load as a WepsDBFile class */ public void addXmlFile(WepsDBFile xfile) { SAXParserFactory factory; SAXParser saxParser; factory = SAXParserFactory.newInstance(); TFile wf = new TFile(xfile.getPathName()); //actionSeq = new ArrayList(); //actionStores.add(actionSeq); currentFile = xfile; try { // Parse the input saxParser = factory.newSAXParser(); saxParser.parse(new TFileInputStream(wf), this); } catch (IOException | ParserConfigurationException | SAXException t) { t.printStackTrace(); } } /** * Called automatically by the SAX parser. * @throws org.xml.sax.SAXException */ @Override public void startDocument() throws SAXException { inIdSection = false; } /** * Called automatically by the SAX parser. * @throws org.xml.sax.SAXException */ @Override public void endDocument() throws SAXException { //At the end of the document, we want to make sure it has devnotes. // if(isCropXml) currentFile.updateCropNotes(); // else currentFile.updateOpNotes(); } /** * This translates the external DTD references to the file location in the * main mcrew_cfg directory. This is called automatically by the SAX parser. * @param publicID * @param sysID * @return */ @Override public InputSource resolveEntity(String publicID, String sysID) { TFile base = new TFile(sysID); String n = "file:" + mcrew_cfg + base.getName(); return new InputSource(n); } /** * Called automatically by the SAX parser when a beginning <> tag is seen. * @param namespaceURI * @param attrs * @param lName * @param qName * @throws org.xml.sax.SAXException */ @Override public void startElement(String namespaceURI, String lName, // local name String qName, // qualified name Attributes attrs) throws SAXException { String eName = lName; // element name if ("".equals(eName)) { eName = qName; } switch (eName) { case "operationname": objectName = ""; grabObjectName = true; break; case "cropname": objectName = ""; grabObjectName = true; break; case "name": name = ""; grabName = true; break; case "value": theVal = ""; grabValue = true; break; case "actionvalue": currentFile.startActionNode(); break; case "identity": inIdSection = true; break; case "code": if (inIdSection) { grabCode = true; theCode = ""; } break; case "id": if (inIdSection) { grabId = true; theId = ""; } break; } } /** * Called automatically by the SAX parser when an ending <> is seen. * This causes the information to be added to the internal viewer classes * @param namespaceURI * @param qName * @param sName * @throws org.xml.sax.SAXException */ @Override public void endElement(String namespaceURI, String sName, // simple name String qName // qualified name ) throws SAXException { String eName = sName; // element name if ("".equals(eName)) { eName = qName; } if (eName.equals("operationname")) { grabObjectName = false; currentFile.objectName = objectName; } else if (eName.equals("cropname")) { grabObjectName = false; currentFile.objectName = objectName; } else if (eName.equals("param")) { String parmName2 = name; if (!isCropXml) { int intId = Integer.parseInt(theId); parmName2 = parmName2.concat(Integer.toString(intId)); } if (currentFile.addParm(parmName2, theVal) == false) { String estr = ""; if (!isCropXml) { estr = "Could not set parameter: '" + name + "' to " + theVal + " in process/group " + theId + ". Source file: '" + currentFile.getFileName() + "'"; estr = estr.concat("\nReason: Parameter not in defn file/not necessary.\n"); //System.out.println(lastBuf + " " + Integer.toString(lastlen) + " " + Integer.toString(lastoff)); } else { estr = "Could not set parm value: '" + parmName2 + "' to " + theVal + " source file: " + currentFile.getFileName(); } //System.out.println(estr); ErrorSink.add(estr); } } else if (eName.equals("identity")) { inIdSection = false; } else if (eName.equals("actionvalue")) { OpAction a = pListing.findOpAction(theCode, theId); if (a == null) { String estr = "Could not find process/group: " + theCode + " " + theId + " source file: " + currentFile.getFileName(); ErrorSink.add(estr); //System.out.println(estr); } else { //actionSeq.add(a); currentFile.endActionNode(a); } } else if (eName.equals("name")) { grabName = false; name = name.trim(); } else if (eName.equals("value")) { grabValue = false; theVal = theVal.trim(); } else if (eName.equals("code") && inIdSection) { theCode = theCode.trim(); grabCode = false; } else if (eName.equals("id") && inIdSection) { grabId = false; theId = theId.trim(); } } /** * * Called automatically by the SAX parser to get the string inside the tags * This may require several calls to piece together the data. * * @param buf * @param len * @param offset * @throws org.xml.sax.SAXException */ @Override public void characters(char buf[], int offset, int len) throws SAXException { String s = new String(buf, offset, len); if (grabName) { name = name.concat(s); } else if (grabValue) { theVal = theVal.concat(s); } else if (grabCode) { theCode = theCode.concat(s); } else if (grabId) { theId = theId.concat(s); } else if (grabObjectName) { objectName = objectName.concat(s); } } }