protected synchronized String resolveLocalPublic()

in xmlresolver-1.2/src/main/java/org/apache/xml/resolver/Catalog.java [1582:1664]
64 lines of code
20 McCabe index (conditional complexity)

  protected synchronized String resolveLocalPublic(int entityType,
						   String entityName,
						   String publicId,
						   String systemId)
    throws MalformedURLException, IOException {

    // Always normalize the public identifier before attempting a match
    publicId = PublicId.normalize(publicId);

    // If there's a SYSTEM entry in this catalog, use it
    if (systemId != null) {
      String resolved = resolveLocalSystem(systemId);
      if (resolved != null) {
	return resolved;
      }
    }

    // If there's a PUBLIC entry in this catalog, use it
    boolean over = default_override;
    Enumeration en = catalogEntries.elements();
    while (en.hasMoreElements()) {
      CatalogEntry e = (CatalogEntry) en.nextElement();
      if (e.getEntryType() == OVERRIDE) {
	over = e.getEntryArg(0).equalsIgnoreCase("YES");
	continue;
      }

      if (e.getEntryType() == PUBLIC
	  && e.getEntryArg(0).equals(publicId)) {
	if (over || systemId == null) {
	  return e.getEntryArg(1);
	}
      }
    }

    // If there's a DELEGATE_PUBLIC entry in this catalog, use it
    over = default_override;
    en = catalogEntries.elements();
    Vector delCats = new Vector();
    while (en.hasMoreElements()) {
      CatalogEntry e = (CatalogEntry) en.nextElement();
      if (e.getEntryType() == OVERRIDE) {
	over = e.getEntryArg(0).equalsIgnoreCase("YES");
	continue;
      }

      if (e.getEntryType() == DELEGATE_PUBLIC
	  && (over || systemId == null)) {
	String p = (String) e.getEntryArg(0);
	if (p.length() <= publicId.length()
	    && p.equals(publicId.substring(0, p.length()))) {
	  // delegate this match to the other catalog

	  delCats.addElement(e.getEntryArg(1));
	}
      }
    }

    if (delCats.size() > 0) {
      Enumeration enCats = delCats.elements();

      if (catalogManager.debug.getDebug() > 1) {
	catalogManager.debug.message(2, "Switching to delegated catalog(s):");
	while (enCats.hasMoreElements()) {
	  String delegatedCatalog = (String) enCats.nextElement();
	  catalogManager.debug.message(2, "\t" + delegatedCatalog);
	}
      }

      Catalog dcat = newCatalog();

      enCats = delCats.elements();
      while (enCats.hasMoreElements()) {
	String delegatedCatalog = (String) enCats.nextElement();
	dcat.parseCatalog(delegatedCatalog);
      }

      return dcat.resolvePublic(publicId, null);
    }

    // Nada!
    return null;
  }