Changeset 3341

Timestamp:

2002-08-12T09:48:42+12:00 (22 years ago)

Author:

kjdon

Message:

some modifications

Location:

trunk/gsdl3/src/java/org/greenstone/gsdl3/util

Files:

• ConfigVars.java (added)
• GSFile.java (modified) (1 diff)
• GSHTML.java (added)
• GSXML.java (modified) (2 diffs)
• XMLTransformer.java (modified) (2 diffs)
• XSLTUtil.java (added)

trunk/gsdl3/src/java/org/greenstone/gsdl3/util/GSFile.java

@@ -105 +105 @@
         File.separatorChar+filename;
     }
-                          
+        
+    /** returns the absolute path to a stylesheet 
+     * stylesheets are looked for in the following order
+     * site-specific, ui specific, default
+     * returns null  if the file cannot be found*/
+    /*    static public String stylesheetPath(String gsdl_home, String display_home,
+                    String site_home, String filename) {
+
+    // try site one first
+    File stylesheet = new File(site_home+File.separatorChar+"transform"+
+                   File.separatorChar+filename);
+    if (stylesheet.exists()) {
+        return stylesheet.getPath();
+    }
+    // try custom display
+    stylesheet = new File(display_home+File.separatorChar+"transform"+
+                   File.separatorChar+filename);
+    if (stylesheet.exists()) {
+        return stylesheet.getPath();
+    }
+    // return the default one - should we check that it exists here?
+    stylesheet = new File(gsdl_home+File.separatorChar+"transform"+
+                   File.separatorChar+filename);
+    if (stylesheet.exists()) {
+        return stylesheet.getPath();
+    }
+        
+    // cant find it
+    return null;
+    }
+    */
+    static public String stylesheetPath(ConfigVars config, String filename) {
+    // try site one first
+    File stylesheet = new File(config.sites_home_+File.separatorChar+
+                   config.site_name_+File.separatorChar+
+                   "transform"+File.separatorChar+filename);
+    if (stylesheet.exists()) {
+        return stylesheet.getPath();
+    }
+    // try custom display
+    stylesheet = new File(config.interfaces_home_+File.separatorChar+
+                  config.interface_name_+File.separatorChar+
+                  "transform"+File.separatorChar+filename);
+    if (stylesheet.exists()) {
+        return stylesheet.getPath();
+    }
+    // return the default one - should we check that it exists here?
+    stylesheet = new File(config.interfaces_home_+File.separatorChar+
+                  "default"+File.separatorChar+
+                  "transform"+File.separatorChar+filename);
+    if (stylesheet.exists()) {
+        return stylesheet.getPath();
+    }
+        
+    // cant find it
+    return null;
+    }
     static public String base64EncodeFromFile(String in_filename) {
     byte [] data=null;

trunk/gsdl3/src/java/org/greenstone/gsdl3/util/GSXML.java

@@ -107 +107 @@
     /** add text to a document/subsection  element */
     public static boolean addDocText(Document owner, Element doc, String text) {
+
     Element content = owner.createElement("content");
     Text t = owner.createTextNode(text);
@@ -133 +134 @@
 
     }
+
+    public static boolean mergeMetadataLists(Node to, Node from) {
+    Node to_meta = GSXML.getChildByTagName(to, "metadataList");
+    Node from_meta = getChildByTagName(from, "metadataList");
+    
+    if  (from_meta == null) { // nothing to copy
+        return true;
+    }
+    Document to_owner = to.getOwnerDocument();
+    Node new_from = to_owner.importNode(from_meta, true);
+
+    if (to_meta == null) { // just copy the whole list
+        to.appendChild(new_from);
+        return true;
+    }
+    
+    // copy individual elements
+    Node child = new_from.getFirstChild();
+    while ( child != null) {
+        to_meta.appendChild(child);
+        child = child.getNextSibling();
+    }
+    return true;
+    }
+    
+    /** takes two nodes - should have the same node type, tag name, etc
+     * copies the info from 'from' into 'to' 
+     -- not finished haven't thought through the algo yet.*/
+    /*
+    public static boolean mergeElements(Element to, Element from) {
+
+    if (to.getNodeName()!=from.getNodeName()) {
+        System.err.println("cant merge two nodes with different names");
+        return false;
+    }
+
+    // copy any atts over - ignore for now
+
+    // copy the children
+    if (!from.hasChildNodes()) {
+        return true;
+    }
+
+    // check if they belong to the same document
+    Document to_doc = to.getOwnerDocument();
+    Document from_doc = from.getOwnerDocument();
+    Element newfrom;
+    if (to_doc != from_doc) {
+        nfrom = to_doc.importNode(from, true);
+    } else {
+        newfrom = from;
+    }
+    
+    if (!to.hasChildNodes()) {
+        // just copy all the children over
+        Node child = newfrom.getFirstChild();
+        while (child !=null) {
+        to.appendChild(child);
+        child = child.getNextSibling();
+        }
+        return true;
+    }
+    
+    // have to check each one to see if already present or not
+    HashMap children = getChildrenMap(to);
+    
+    Node child = newfrom.getFirstChild();
+    while (child !=null) {
+        String name = child.getNodeName();
+        Node n = map.get(name);
+        if (n==null) { // there is no elem by that name in to
+        to.appendChild(child);
+        }
+        else {
+    }
+    return true;
+    }
+    */
+    /** returns the (first) child element with the given name */
+    public static Node getChildByTagName(Node n, String name) {
+
+    Node child = n.getFirstChild();
+    while (child!=null) {
+        if (child.getNodeName().equals(name)) {
+        return child;
+        }
+        child = child.getNextSibling();
+    }
+    return null; //not found
+    }
+    public static HashMap getChildrenMap(Node n) {
+    
+    HashMap map= new HashMap();
+    Node child = n.getFirstChild();
+    while (child!=null) {
+        String name = child.getNodeName();
+        map.put(name, child);
+        child = child.getNextSibling();
+    }
+    return map;
+    }
+       
+    public static Element createTextElement(Document owner, String elem_name,
+                        String text) {
+    Element e = owner.createElement(elem_name);
+    Text t = owner.createTextNode(text);
+    e.appendChild(t);
+    return e;
+
+    }
+
 }

trunk/gsdl3/src/java/org/greenstone/gsdl3/util/XMLTransformer.java

@@ -28 +28 @@
 import javax.xml.transform.dom.DOMSource;
 import javax.xml.transform.stream.StreamResult;
+
+import org.w3c.dom.Node;
 
 // other java classes
@@ -90 +92 @@
     }   
     }
+
+    public String transform(String stylesheet, Node xml_in) {
+    
+    try {
+        // Use the TransformerFactory to process the stylesheet Source and generate a Transformer.
+        Transformer transformer = t_factory_.newTransformer(new StreamSource(stylesheet));
+
+        // Use the Transformer to transform an XML Source and send the output to a Result object.
+        StringWriter output = new StringWriter();
+
+        transformer.transform(new DOMSource(xml_in), new StreamResult(output));
+        return output.toString();
+    } catch (TransformerConfigurationException e) {
+        System.err.println("XMLTransformer: couldn't create transformer object: "+e.getMessage());
+        return "";
+    } catch (TransformerException e) {
+        System.err.println("XMLTransformer: couldn't transform the source: " + e.getMessage());
+        return "";
+    }   
+    }
 }