import java.util.zip.*;
import org.ibex.js.*;
import org.ibex.util.*;
-import org.xwt.translators.MSPack;
+import org.ibex.translators.MSPack;
/**
* Essentiall an InputStream "factory". You can repeatedly ask a
public static class NotCacheableException extends Exception { }
// streams are "sealed" by default to prevent accidental object leakage
- public void put(Object key, Object val) throws JSExn { }
- public Object get(Object key) throws JSExn { return null; }
+ public void put(Object key, Object val) { }
+ private Cache getCache = new Cache(100);
+ protected Object _get(Object key) { return null; }
+ public final Object get(Object key) {
+ Object ret = getCache.get(key);
+ if (ret == null) getCache.put(key, ret = _get(key));
+ return ret;
+ }
// Private Interface //////////////////////////////////////////////////////////////////////////////
private String url;
public String toString() { return "Stream.HTTP:" + url; }
HTTP(String url) { while (url.endsWith("/")) url = url.substring(0, url.length() - 1); this.url = url; }
- public Object get(Object key) throws JSExn { return new HTTP(url + "/" + (String)key); }
+ public Object _get(Object key) { return new HTTP(url + "/" + (String)key); }
public String getCacheKey(Vec path) throws NotCacheableException { return url; }
public InputStream getInputStream() throws IOException { return new org.ibex.HTTP(url).GET(); }
}
public String toString() { return "file:" + path; }
public String getCacheKey() throws NotCacheableException { throw new NotCacheableException(); /* already on disk */ }
public InputStream getInputStream() throws IOException { return new FileInputStream(path); }
- public Object get(Object key) throws JSExn { return new File(path + java.io.File.separatorChar + (String)key); }
+ public Object _get(Object key) { return new File(path + java.io.File.separatorChar + (String)key); }
}
/** "unwrap" a Zip archive */
this.path = path;
}
public String getCacheKey() throws NotCacheableException { return parent.getCacheKey() + "!zip:"; }
- public Object get(Object key) throws JSExn { return new Zip(parent, path==null?(String)key:path+'/'+(String)key); }
+ public Object _get(Object key) { return new Zip(parent, path==null?(String)key:path+'/'+(String)key); }
public InputStream getInputStream() throws IOException {
InputStream pis = parent.getInputStream();
ZipInputStream zis = new ZipInputStream(pis);
Cab(Stream parent) { this(parent, null); }
Cab(Stream parent, String path) { this.parent = parent; this.path = path; }
public String getCacheKey() throws NotCacheableException { return parent.getCacheKey() + "!cab:"; }
- public Object get(Object key) throws JSExn { return new Cab(parent, path==null?(String)key:path+'/'+(String)key); }
+ public Object _get(Object key) { return new Cab(parent, path==null?(String)key:path+'/'+(String)key); }
public InputStream getInputStream() throws IOException { return new MSPack(parent.getInputStream()).getInputStream(path); }
}
/** the Builtin resource */
public static class Builtin extends Stream {
- public Builtin() { };
public String getCacheKey() throws NotCacheableException { throw new NotCacheableException(); }
public InputStream getInputStream() throws IOException { return Platform.getBuiltinInputStream(); }
}