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;
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)));
+ if (url.startsWith("utf8:")) return new ByteArray(url.substring(5).getBytes());
+ throw new JS.Exn("invalid resource specifier " + url);
}
/** HTTP or HTTPS resource */
}
}
- // FIXME: dangerous
/** a file */
public static class File extends Res {
private String path;
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;
}
}
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); }
}
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(); }
}
+ /** shadow resource which replaces the graft */
+ public static class ProgressWatcher extends Res {
+ Res watchee;
+ JS.Callable callback;
+ Graft(Res watchee, JS.Callable callback) { this.watchee = watchee; this.callback = callback; }
+ public InputStream getInputStream(String s) throws IOException {
+ return new FilterInputStream(graftee.getInputStream(s)) {
+ int bytesDownloaded = 0;
+ public int read() throws IOException {
+ int ret = super.read();
+ if (ret != -1) bytesDownloaded++;
+ return ret;
+ }
+ public int read(byte[] b, int off, int len) throws IOException {
+ int ret = super.read(b, off, len);
+ ThreadMessage.newthread(new JS.Callable() { public Object call(JS.Args a) {
+ JS.Array args = new JS.Array();
+ args.addElement(new Integer(bytesDownloaded));
+ callback.call(args);
+ } });
+ }
+ };
+ }
+ });
+
/** unpacks a Microsoft CAB file (possibly embedded in another file; we scan for 'MSCF' */
public static class CAB extends Res {
private Res parent;
return ((i & 0xff) << 24) | ((i & 0xff00) << 8) | ((i & 0xff0000) >>> 8) | (i >>> 24);
}
public InputStream getInputStream(String path) throws IOException {
- InputStream is = parent.getInputStream();
+ /* InputStream is = parent.getInputStream();
byte[] scan = new byte[4];
int ofs = 0;
for(int i=0; i<2; i++) {
}
Log.log(this, "found MSCF header at offset " + ofs);
return org.xwt.util.CAB.getFileInputStream(is, path, true);
+ */
+ try {
+ return org.xwt.util.CAB.getFileInputStream(is, 2, path);
+ } catch (EOFException eof) {
+ throw new JS.Exn("MSCF header tag not found in file");
+ } catch (EOFException eof) {
+ throw new JS.Exn("IOException while reading file");
+ }
}
}
projects / org.ibex.core.git / blobdiff