2003/09/27 06:42:26

[org.ibex.core.git] / src / org / xwt / Res.java

diff --git a/src/org/xwt/Res.java b/src/org/xwt/Res.java
index 3f70589..1f1a927 100644 (file)
--- a/src/org/xwt/Res.java
+++ b/src/org/xwt/Res.java
@@ -6,18 +6,20 @@ import java.util.*;
 import java.util.zip.*;
 import org.xwt.js.*;
 import org.xwt.util.*;
+import org.bouncycastle.util.encoders.Base64;
 
 /** base class for XWT resources */
 public abstract class Res extends JS {
 
-    public String getDescriptiveName() { return "FIXME"; }
-
-    /** if this Res corresponds to a Template, it is cached here */
-    Template t = null;
+    public String getDescriptiveName() { return ""; }
 
     /** cache of subresources so that the equality operator works on them */
     private Hash refCache = null;
 
+    public Template t = null;
+
+    public Res getParent() { return null; }
+
     /** returns an InputStream containing the Resource's contents */
     public InputStream getInputStream() throws IOException { return getInputStream(""); }
     public abstract InputStream getInputStream(String path) throws IOException;
@@ -43,14 +45,16 @@ public abstract class Res extends JS {
         return ret;
     }
 
-    public static Res stringToRes(String url) {
+    public static Res stringToRes(String url) { return stringToRes(url, false); }
+    public static Res stringToRes(String url, boolean permitLocalFilesystem) {
         if (url.indexOf('!') != -1)
             return (Res)(new Zip(stringToRes(url.substring(0, url.lastIndexOf('!')))).get(url.substring(url.lastIndexOf('!') + 1)));
         if (url.startsWith("http://")) return new HTTP(url);
         if (url.startsWith("https://")) return new HTTP(url);
-        if (url.startsWith("file:")) return new File(url.substring(5));
+        if (url.startsWith("file:") && permitLocalFilesystem) return new File(url.substring(5));
         if (url.startsWith("cab:")) return new CAB(stringToRes(url.substring(4)));
-        throw new JS.Exn("invalid resource specifier");
+        if (url.startsWith("data:")) return new ByteArray(Base64.decode(url.substring(5)));
+        throw new JS.Exn("invalid resource specifier " + url);
     }
 
     /** HTTP or HTTPS resource */
@@ -70,7 +74,6 @@ public abstract class Res extends JS {
         }
     }
 
-    // FIXME: dangerous
     /** a file */
     public static class File extends Res {
         private String path;
@@ -94,10 +97,11 @@ public abstract class Res extends JS {
         private Res parent;
         Zip(Res parent) { this.parent = parent; }
         public InputStream getInputStream(String path) throws IOException {
+            if (path.startsWith("/")) path = path.substring(1);
             ZipInputStream zis = new ZipInputStream(parent.getInputStream());
             ZipEntry ze = zis.getNextEntry();
             while(ze != null && !ze.getName().equals(path)) ze = zis.getNextEntry();
-            if (ze == null) throw new JS.Exn("zip file not found in archive");
+            if (ze == null) throw new JS.Exn("requested file not found in archive");
             return zis;
         }
     }
@@ -107,12 +111,17 @@ public abstract class Res extends JS {
         Res parent;
         Object key;
         Ref(Res parent, Object key) { this.parent = parent; this.key = key; }
+        public String getDescriptiveName() {
+            String pdn = parent.getDescriptiveName();
+            return pdn.equals("") ? key.toString() : (pdn + "." + key.toString());
+        }
         public Res addExtension(String extension) {
-            return (key instanceof String && ((String)key).endsWith(extension)) ? this : new Ref(this, extension);
+            return (key instanceof String && ((String)key).endsWith(extension)) ? this : new Ref(parent, key + extension);
         }
         public InputStream getInputStream(String path) throws IOException {
             return parent.getInputStream("/" + key + path);
         }
+        public Res getParent() { return parent; }
         public Res graft(Object newResource) { return new Graft(parent, key, newResource); }
     }
 
@@ -126,6 +135,8 @@ public abstract class Res extends JS {
         public int hashCode() { return graftee.hashCode(); }
         public InputStream getInputStream(String s) throws IOException { return graftee.getInputStream(s); }
         public Object get(Object key) { return replaced_key.equals(key) ? replaced_val : graftee.get(key); }
+        public String getDescriptiveName() { return graftee.getDescriptiveName(); }
+        public Res getParent() { return graftee.getParent(); }
     }
 
     /** unpacks a Microsoft CAB file (possibly embedded in another file; we scan for 'MSCF' */