package org.xwt;
import java.io.*;
+import java.util.*;
+import java.util.zip.*;
import org.xwt.js.*;
+import org.xwt.util.*;
// FIXME: ByteStream fileName property
/** base class for XWT resources */
public abstract class Res extends JS {
- public String toString() { return "Resource, source=FIXME"; }
-
- public final InputStream getInputStream() { return getInputStream(""); }
+ public final InputStream getInputStream() throws IOException { return getInputStream(""); }
public Res graft(Object newResource) { throw new JS.Exn("cannot graft onto this resource"); }
public Object get(Object key) { return new Ref(this, key); }
public void put(Object key, Object val) { throw new JS.Exn("cannot put to a resource"); }
public Object[] keys() { throw new JS.Exn("cannot enumerate a resource"); }
- public abstract InputStream getInputStream(String path) { return getInputStream(""); }
- public abstract Res addExtension(String extension);
+ public abstract InputStream getInputStream(String path) throws IOException;
+ //public abstract Res addExtension(String extension);
public static Res stringToRes(String url) {
- if (url.indexOf('!') == -1)
- return new Zip(stringToRes(url.substring(0, url.lastIndexOf('!'))),
- url.substring(url.lastIndexOf('!') + 1));
+ 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("cab:")) return new CAB(stringToRes(url.substring(4)));
throw new JS.Exn("invalid resource specifier");
}
public static class HTTP extends Res {
private String url;
HTTP(String url) { this.url = url; }
- public InputStream getInputStream(String path) { return new HTTP(url + path).GET(); }
+ public InputStream getInputStream(String path) throws IOException { return new org.xwt.HTTP(url + path).GET(); }
+ }
+
+ // FIXME: dangerous
+ /** a file */
+ public static class File extends Res {
+ private String path;
+ File(String path) { this.path = path; }
+ public InputStream getInputStream(String rest) throws IOException { return new FileInputStream((path + rest).replace('/', java.io.File.separatorChar)); }
}
/** wrap a Res around a preexisting InputStream */
public static class IS extends Res {
InputStream parent;
IS(InputStream parent) { this.parent = parent; }
- public InputStream getInputStream() { return parent; }
public InputStream getInputStream(String path) {
if (!"".equals(path)) throw new JS.Exn("can't access subresources of IS");
return parent;
public static class Zip extends Res {
private Res parent;
Zip(Res parent) { this.parent = parent; }
- public InputStream getInputStream(String path) {
+ public InputStream getInputStream(String path) throws IOException {
ZipInputStream zis = new ZipInputStream(parent.getInputStream());
ZipEntry ze = zis.getNextEntry();
while(ze != null && !ze.getName().equals(path)) ze = zis.getNextEntry();
Res parent;
Object key;
Ref(Res parent, Object key) { this.parent = parent; this.key = key; }
- public InputStream getInputStream(path) {
+ public InputStream getInputStream(String path) throws IOException {
return parent.getInputStream("/" + key + path);
}
public Res graft(Object newResource) { return new Graft(parent, key, newResource); }
Graft(Res graftee, Object key, Object val) {
this.graftee = graftee; replaced_key = key; replaced_val = val; }
public boolean equals(Object o) { return (this == o || graftee.equals(o)); }
+ 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);
}
}
- /////////////// bytestream
+ /** unpacks a Microsoft CAB file (possibly embedded in another file; we scan for 'MSCF' */
+ public static class CAB extends Res {
+ private Res parent;
+ CAB(Res parent) { this.parent = parent; }
+ private int swap_endian(int i) {
+ return ((i & 0xff) << 24) | ((i & 0xff00) << 8) | ((i & 0xff0000) >>> 8) | (i >>> 24);
+ }
+ public InputStream getInputStream(String path) throws IOException {
+ InputStream is = new InputStream(parent.getInputStream());
+ byte[] scan = new byte[4];
+ while(scan[0] != 'M' || scan[1] != 'S' || scan[2] != 'C' || scan[3] != 'F') {
+ System.arraycopy(scan, 1, scan, 0, 3);
+ int read = is.read();
+ if (read == -1) throw new JS.Exn("MSCF header tag not found in file");
+ scan[3] = (byte)read;
+ }
+ return org.xwt.util.CAB.getFileInputStream(is, path);
+ }
+ }
public Object callMethod(Object method, Array args, boolean checkOnly) throws JS.Exn {
if (method.equals("getUTF")) {
}
return caw.toString();
} catch (IOException e) {
- if (Log.on) Log.log(ByteStream.class, "IO Exception while reading from file");
- if (Log.on) Log.log(ByteStream.class, e);
- throw new JS.Exn("error while reading from ByteStream");
+ if (Log.on) Log.log(Res.class, "IO Exception while reading from file");
+ if (Log.on) Log.log(Res.class, e);
+ throw new JS.Exn("error while reading from Resource");
}
- } else if (name.equals("getDOM")) {
+ } else if (method.equals("getDOM")) {
if (checkOnly) return Boolean.TRUE;
if (args.length() != 0) return null;
return new XMLHelper().doParse();
} catch (XML.XMLException e) {
throw new JS.Exn("error parsing XML: " + e.toString());
} catch (IOException e) {
- if (Log.on) Log.log(ByteStream.class, "IO Exception while reading from file");
- if (Log.on) Log.log(ByteStream.class, e);
- throw new JS.Exn("error reading from ByteStream");
+ if (Log.on) Log.log(this, "IO Exception while reading from file");
+ if (Log.on) Log.log(this, e);
+ throw new JS.Exn("error reading from Resource");
}
return obStack.size() >= 1 ? (JS)obStack.elementAt(0) : null;
}
projects / org.ibex.core.git / blobdiff