import java.util.zip.*;
import org.xwt.js.*;
import org.xwt.util.*;
+import org.bouncycastle.util.encoders.Base64;
-// FIXME: ByteStream fileName property
/** base class for XWT resources */
public abstract class Res extends JS {
- public final InputStream getInputStream() throws IOException { return getInputStream(""); }
+ public String getDescriptiveName() { return ""; }
- 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"); }
+ /** 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;
- //public abstract Res addExtension(String extension);
- public static Res stringToRes(String url) {
+ /** graft newResource in place of this resource on its parent */
+ public Res graft(Object newResource) { throw new JS.Exn("cannot graft onto this resource"); }
+
+ /** if the path of this resource does not end with extension, return a new one wit it appended */
+ public Res addExtension(String extension) { return new Ref(this, extension); }
+
+ public Object[] keys() { throw new JS.Exn("cannot enumerate a resource"); }
+ public void put(Object key, Object val) { throw new JS.Exn("cannot put to a resource"); }
+ public Object get(Object key) {
+ if ("".equals(key)) {
+ Template t = Template.getTemplate(addExtension(".xwt"));
+ return t == null ? null : t.getStatic();
+ }
+ Object ret = refCache == null ? null : refCache.get(key);
+ if (ret != null) return ret;
+ ret = new Ref(this, key);
+ if (refCache == null) refCache = new Hash();
+ refCache.put(key, ret);
+ return ret;
+ }
+
+ 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 */
public InputStream getInputStream(String path) throws IOException { return new org.xwt.HTTP(url + path).GET(); }
}
- // FIXME: dangerous
+ /** byte arrays */
+ public static class ByteArray extends Res {
+ private byte[] bytes;
+ ByteArray(byte[] bytes) { this.bytes = bytes; }
+ public InputStream getInputStream(String path) throws IOException {
+ if (!"".equals(path)) throw new JS.Exn("can't get subresources of a byte[] resource");
+ return new ByteArrayInputStream(bytes);
+ }
+ }
+
/** 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)); }
+ public InputStream getInputStream(String rest) throws IOException {
+ return new FileInputStream((path + rest).replace('/', java.io.File.separatorChar)); }
}
/** wrap a Res around a preexisting InputStream */
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(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); }
}
Res graftee;
Object replaced_key;
Object replaced_val;
- Graft(Res graftee, Object key, Object val) {
- this.graftee = graftee; replaced_key = key; replaced_val = val; }
+ 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);
- }
+ 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' */
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());
+ InputStream is = 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;
+ int ofs = 0;
+ for(int i=0; i<2; i++) {
+ // wierdly, .exe files have three MSCF's
+ 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;
+ ofs++;
+ }
+ scan[0] = 0;
}
- return org.xwt.util.CAB.getFileInputStream(is, path);
+ Log.log(this, "found MSCF header at offset " + ofs);
+ return org.xwt.util.CAB.getFileInputStream(is, path, true);
}
}
projects / org.ibex.core.git / blobdiff