catalog.java

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   *
   * @param fileName The filename of the catalog file to process
   *
   * @throws MalformedURLException The fileName cannot be turned into
   * a valid URL.
   * @throws IOException Error reading catalog file.
   */
  protected synchronized void parseCatalogFile(String fileName)
    throws MalformedURLException, IOException, CatalogException {

    CatalogEntry entry;

    // The base-base is the cwd. If the catalog file is specified
    // with a relative path, this assures that it gets resolved
    // properly...
    try {
      // tack on a basename because URLs point to files not dirs
      catalogCwd = FileURL.makeURL("basename");
    } catch (MalformedURLException e) {
      String userdir = System.getProperty("user.dir");
      userdir.replace('\\', '/');
      catalogManager.debug.message(1, "Malformed URL on cwd", userdir);
      catalogCwd = null;
    }

    // The initial base URI is the location of the catalog file
    try {
      base = new URL(catalogCwd, fixSlashes(fileName));
    } catch (MalformedURLException e) {
      try {
	base = new URL("file:" + fixSlashes(fileName));
      } catch (MalformedURLException e2) {
	catalogManager.debug.message(1, "Malformed URL on catalog filename",
		      fixSlashes(fileName));
	base = null;
      }
    }

    catalogManager.debug.message(2, "Loading catalog", fileName);
    catalogManager.debug.message(4, "Default BASE", base.toString());

    fileName = base.toString();

    DataInputStream inStream = null;
    boolean parsed = false;
    boolean notFound = false;

    for (int count = 0; !parsed && count < readerArr.size(); count++) {
      CatalogReader reader = (CatalogReader) readerArr.get(count);

      try {
	notFound = false;
	inStream = new DataInputStream(base.openStream());
      } catch (FileNotFoundException fnfe) {
	// No catalog; give up!
	notFound = true;
	break;
      }

      try {
	reader.readCatalog(this, inStream);
	parsed = true;
      } catch (CatalogException ce) {
	if (ce.getExceptionType() == CatalogException.PARSE_FAILED) {
	  // give up!
	  break;
	} else {
	  // try again!
	}
      }

      try {
	inStream.close();
      } catch (IOException e) {
	//nop
      }
    }

    if (!parsed) {
      if (notFound) {
	catalogManager.debug.message(3, "Catalog does not exist", fileName);
      } else {
	catalogManager.debug.message(1, "Failed to parse catalog", fileName);
      }
    }
  }

  /**
   * Cleanup and process a Catalog entry.
   *
   * <p>This method processes each Catalog entry, changing mapped
   * relative system identifiers into absolute ones (based on the current
   * base URI), and maintaining other information about the current
   * catalog.</p>
   *
   * @param entry The CatalogEntry to process.
   */
  public void addEntry(CatalogEntry entry) {
    int type = entry.getEntryType();

    if (type == BASE) {
      String value = entry.getEntryArg(0);
      URL newbase = null;

      if (base == null) {
	catalogManager.debug.message(5, "BASE CUR", "null");
      } else {
	catalogManager.debug.message(5, "BASE CUR", base.toString());
      }
      catalogManager.debug.message(4, "BASE STR", value);

      try {
	value = fixSlashes(value);
	newbase = new URL(base, value);
      } catch (MalformedURLException e) {
	try {
	  newbase = new URL("file:" + value);
	} catch (MalformedURLException e2) {
	  catalogManager.debug.message(1, "Malformed URL on base", value);
	  newbase = null;
	}
      }

      if (newbase != null) {
	base = newbase;
      }

      catalogManager.debug.message(5, "BASE NEW", base.toString());
    } else if (type == CATALOG) {
      String fsi = makeAbsolute(entry.getEntryArg(0));

      catalogManager.debug.message(4, "CATALOG", fsi);

      localCatalogFiles.addElement(fsi);
    } else if (type == PUBLIC) {
      String publicid = PublicId.normalize(entry.getEntryArg(0));
      String systemid = makeAbsolute(normalizeURI(entry.getEntryArg(1)));

      entry.setEntryArg(0, publicid);
      entry.setEntryArg(1, systemid);

      catalogManager.debug.message(4, "PUBLIC", publicid, systemid);

      catalogEntries.addElement(entry);
    } else if (type == SYSTEM) {
      String systemid = normalizeURI(entry.getEntryArg(0));
      String fsi = makeAbsolute(normalizeURI(entry.getEntryArg(1)));

      entry.setEntryArg(1, fsi);

      catalogManager.debug.message(4, "SYSTEM", systemid, fsi);

      catalogEntries.addElement(entry);
    } else if (type == URI) {
      String uri = normalizeURI(entry.getEntryArg(0));
      String altURI = makeAbsolute(normalizeURI(entry.getEntryArg(1)));

      entry.setEntryArg(1, altURI);

      catalogManager.debug.message(4, "URI", uri, altURI);

      catalogEntries.addElement(entry);
    } else if (type == DOCUMENT) {
      String fsi = makeAbsolute(normalizeURI(entry.getEntryArg(0)));
      entry.setEntryArg(0, fsi);

      catalogManager.debug.message(4, "DOCUMENT", fsi);

      catalogEntries.addElement(entry);
    } else if (type == OVERRIDE) {
      catalogManager.debug.message(4, "OVERRIDE", entry.getEntryArg(0));

      catalogEntries.addElement(entry);
    } else if (type == SGMLDECL) {
      // meaningless in XML
      String fsi = makeAbsolute(normalizeURI(entry.getEntryArg(0)));
      entry.setEntryArg(0, fsi);

      catalogManager.debug.message(4, "SGMLDECL", fsi);

      catalogEntries.addElement(entry);
    } else if (type == DELEGATE_PUBLIC) {
      String ppi = PublicId.normalize(entry.getEntryArg(0));
      String fsi = makeAbsolute(normalizeURI(entry.getEntryArg(1)));

      entry.setEntryArg(0, ppi);
      entry.setEntryArg(1, fsi);

      catalogManager.debug.message(4, "DELEGATE_PUBLIC", ppi, fsi);

      addDelegate(entry);
    } else if (type == DELEGATE_SYSTEM) {
      String psi = normalizeURI(entry.getEntryArg(0));
      String fsi = makeAbsolute(normalizeURI(entry.getEntryArg(1)));

      entry.setEntryArg(0, psi);
      entry.setEntryArg(1, fsi);

      catalogManager.debug.message(4, "DELEGATE_SYSTEM", psi, fsi);

      addDelegate(entry);
    } else if (type == DELEGATE_URI) {
      String pui = normalizeURI(entry.getEntryArg(0));
      String fsi = makeAbsolute(normalizeURI(entry.getEntryArg(1)));

      entry.setEntryArg(0, pui);
      entry.setEntryArg(1, fsi);

      catalogManager.debug.message(4, "DELEGATE_URI", pui, fsi);

      addDelegate(entry);
    } else if (type == REWRITE_SYSTEM) {
      String psi = normalizeURI(entry.getEntryArg(0));
      String rpx = makeAbsolute(normalizeURI(entry.getEntryArg(1)));

      entry.setEntryArg(0, psi);
      entry.setEntryArg(1, rpx);

      catalogManager.debug.message(4, "REWRITE_SYSTEM", psi, rpx);

      catalogEntries.addElement(entry);
    } else if (type == REWRITE_URI) {
      String pui = normalizeURI(entry.getEntryArg(0));
      String upx = makeAbsolute(normalizeURI(entry.getEntryArg(1)));

      entry.setEntryArg(0, pui);
      entry.setEntryArg(1, upx);

      catalogManager.debug.message(4, "REWRITE_URI", pui, upx);

      catalogEntries.addElement(entry);
    } else if (type == SYSTEM_SUFFIX) {
      String pui = normalizeURI(entry.getEntryArg(0));
      String upx = makeAbsolute(normalizeURI(entry.getEntryArg(1)));

      entry.setEntryArg(0, pui);
      entry.setEntryArg(1, upx);

      catalogManager.debug.message(4, "SYSTEM_SUFFIX", pui, upx);

      catalogEntries.addElement(entry);
    } else if (type == URI_SUFFIX) {
      String pui = normalizeURI(entry.getEntryArg(0));
      String upx = makeAbsolute(normalizeURI(entry.getEntryArg(1)));

      entry.setEntryArg(0, pui);
      entry.setEntryArg(1, upx);

      catalogManager.debug.message(4, "URI_SUFFIX", pui, upx);

      catalogEntries.addElement(entry);
    } else if (type == DOCTYPE) {
      String fsi = makeAbsolute(normalizeURI(entry.getEntryArg(1)));
      entry.setEntryArg(1, fsi);

      catalogManager.debug.message(4, "DOCTYPE", entry.getEntryArg(0), fsi);

      catalogEntries.addElement(entry);
    } else if (type == DTDDECL) {
      // meaningless in XML
      String fpi = PublicId.normalize(entry.getEntryArg(0));
      entry.setEntryArg(0, fpi);
      String fsi = makeAbsolute(normalizeURI(entry.getEntryArg(1)));
      entry.setEntryArg(1, fsi);

      catalogManager.debug.message(4, "DTDDECL", fpi, fsi);

      catalogEntries.addElement(entry);
    } else if (type == ENTITY) {
      String fsi = makeAbsolute(normalizeURI(entry.getEntryArg(1)));
      entry.setEntryArg(1, fsi);

      catalogManager.debug.message(4, "ENTITY", entry.getEntryArg(0), fsi);

      catalogEntries.addElement(entry);
    } else if (type == LINKTYPE) {
      // meaningless in XML
      String fsi = makeAbsolute(normalizeURI(entry.getEntryArg(1)));
      entry.setEntryArg(1, fsi);

      catalogManager.debug.message(4, "LINKTYPE", entry.getEntryArg(0), fsi);

      catalogEntries.addElement(entry);
    } else if (type == NOTATION) {
      String fsi = makeAbsolute(normalizeURI(entry.getEntryArg(1)));
      entry.setEntryArg(1, fsi);

      catalogManager.debug.message(4, "NOTATION", entry.getEntryArg(0), fsi);

      catalogEntries.addElement(entry);
    } else {
      catalogEntries.addElement(entry);
    }
  }

  /**
   * Handle unknown CatalogEntry types.
   *
   * <p>This method exists to allow subclasses to deal with unknown
   * entry types.</p>
   */
  public void unknownEntry(Vector strings) {
    if (strings != null && strings.size() > 0) {
      String keyword = (String) strings.elementAt(0);
      catalogManager.debug.message(2, "Unrecognized token parsing catalog", keyword);
    }
  }

  /**
   * Parse all subordinate catalogs.
   *
   * <p>This method recursively parses all of the subordinate catalogs.
   * If this method does not throw an exception, you can be confident that
   * no subsequent call to any resolve*() method will either, with two
   * possible exceptions:</p>
   *
   * <ol>
   * <li><p>Delegated catalogs are re-parsed each time they are needed
   * (because a variable list of them may be needed in each case,
   * depending on the length of the matching partial public identifier).</p>
   * <p>But they are parsed by this method, so as long as they don't
   * change or disappear while the program is running, they shouldn't
   * generate errors later if they don't generate errors now.</p>
   * <li><p>If you add new catalogs with <code>parseCatalog</code>, they
   * won't be loaded until they are needed or until you call
   * <code>parseAllCatalogs</code> again.</p>
   * </ol>
   *
   * <p>On the other hand, if you don't call this method, you may
   * successfully parse documents without having to load all possible
   * catalogs.</p>
   *
   * @throws MalformedURLException The filename (URL) for a
   * subordinate or delegated catalog is not a valid URL.
   * @throws IOException Error reading some subordinate or delegated
   * catalog file.
   */
  public void parseAllCatalogs()
    throws MalformedURLException, IOException {

    // Parse all the subordinate catalogs
    for (int catPos = 0; catPos < catalogs.size(); catPos++) {
      Catalog c = null;

      try {
	c = (Catalog) catalogs.elementAt(catPos);
      } catch (ClassCastException e) {
	String catfile = (String) catalogs.elementAt(catPos);
	c = newCatalog();

	c.parseCatalog(catfile);
	catalogs.setElementAt(c, catPos);
	c.parseAllCatalogs();
      }
    }

    // Parse all the DELEGATE catalogs
    Enumeration en = catalogEntries.elements();
    while (en.hasMoreElements()) {
      CatalogEntry e = (CatalogEntry) en.nextElement();
      if (e.getEntryType() == DELEGATE_PUBLIC
	  || e.getEntryType() == DELEGATE_SYSTEM
	  || e.getEntryType() == DELEGATE_URI) {
	Catalog dcat = newCatalog();
	dcat.parseCatalog(e.getEntryArg(1));
      }
    }
  }


  /**
   * Return the applicable DOCTYPE system identifier.
   *
   * @param entityName The name of the entity (element) for which
   * a doctype is required.
   * @param publicId The nominal public identifier for the doctype
   * (as provided in the source document).
   * @param systemId The nominal system identifier for the doctype
   * (as provided in the source document).
   *
   * @return The system identifier to use for the doctype.
   *
   * @throws MalformedURLException The formal system identifier of a
   * subordinate catalog cannot be turned into a valid URL.
   * @throws IOException Error reading subordinate catalog file.
   */
  public String resolveDoctype(String entityName,
			       String publicId,
			       String systemId)
    throws MalformedURLException, IOException {
    String resolved = null;

    catalogManager.debug.message(3, "resolveDoctype("
		  +entityName+","+publicId+","+systemId+")");

    systemId = normalizeURI(systemId);

    if (publicId != null && publicId.startsWith("urn:publicid:")) {
      publicId = PublicId.decodeURN(publicId);