removed stream

darcs-hash:20040713022101-5007d-0d7acf38cdbf6cbb2889a5dd702af0747989436d.gz

diff --git a/src/org/ibex/js/Stream.java b/src/org/ibex/js/Stream.java
deleted file mode 100644 (file)
index 05045e9..0000000
--- a/src/org/ibex/js/Stream.java
+++ /dev/null
@@ -1,157 +0,0 @@
-// Copyright 2004 Adam Megacz, see the COPYING file for licensing [GPL]
-package org.ibex.js;
-
-import java.io.*;
-import java.util.zip.*;
-import org.ibex.util.*;
-import org.ibex.plat.*;
-import org.ibex.net.*;
-
-/**
- *   Essentiall an InputStream "factory".  You can repeatedly ask a
- *   Stream for an InputStream, and each InputStream you get back will
- *   be totally independent of the others (ie separate stream position
- *   and state) although they draw from the same data source.
- */
-public abstract class Stream extends JS.Cloneable {
-
-    // Public Interface //////////////////////////////////////////////////////////////////////////////
-
-    public static InputStream getInputStream(Object js) throws IOException { return ((Stream)((JS)js).unclone()).getInputStream();}
-    public static class NotCacheableException extends Exception { }
-
-    // streams are "sealed" by default to prevent accidental object leakage
-    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 //////////////////////////////////////////////////////////////////////////////
-
-    public abstract InputStream getInputStream() throws IOException;
-    protected String getCacheKey() throws NotCacheableException { throw new NotCacheableException(); }
-
-    /** HTTP or HTTPS resource */
-    public static class HTTP extends Stream {
-        private String url;
-        public String toString() { return "Stream.HTTP:" + url; }
-        public HTTP(String url) { while (url.endsWith("/")) url = url.substring(0, url.length() - 1); this.url = url; }
-        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.net.HTTP(url).GET(); }
-    }
-
-    /** byte arrays */
-    public static class ByteArray extends Stream {
-        private byte[] bytes;
-        private String cacheKey;
-        public ByteArray(byte[] bytes, String cacheKey) { this.bytes = bytes; this.cacheKey = cacheKey; }
-        public String getCacheKey() throws NotCacheableException {
-            if (cacheKey == null) throw new NotCacheableException(); return cacheKey; }
-        public InputStream getInputStream() throws IOException { return new ByteArrayInputStream(bytes); }
-    }
-
-    /** a file */
-    public static class File extends Stream {
-        private String path;
-        public File(String path) { this.path = path; }
-        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) { return new File(path + java.io.File.separatorChar + (String)key); }
-    }
-
-    /** "unwrap" a Zip archive */
-    public static class Zip extends Stream {
-        private Stream parent;
-        private String path;
-        public Zip(Stream parent) { this(parent, null); }
-        public Zip(Stream parent, String path) {
-            while(path != null && path.startsWith("/")) path = path.substring(1);
-            this.parent = parent;
-            this.path = path;
-        }
-        public String getCacheKey() throws NotCacheableException { return parent.getCacheKey() + "!zip:"; }
-        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);
-            ZipEntry ze = zis.getNextEntry();
-            while(ze != null && !ze.getName().equals(path)) ze = zis.getNextEntry();
-            if (ze == null) throw new IOException("requested file (" + path + ") not found in archive");
-            return new KnownLength.KnownLengthInputStream(zis, (int)ze.getSize());
-        }
-    }
-
-    /** "unwrap" a Cab archive */
-    public static class Cab extends Stream {
-        private Stream parent;
-        private String path;
-        public Cab(Stream parent) { this(parent, null); }
-        public 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) { 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 String getCacheKey() throws NotCacheableException { throw new NotCacheableException(); }
-        public InputStream getInputStream() throws IOException { return Platform.getBuiltinInputStream(); }
-    }
-
-    /** shadow resource which replaces the graft */
-    public static class ProgressWatcher extends Stream {
-        final Stream watchee;
-        JS callback;
-        public ProgressWatcher(Stream watchee, JS callback) { this.watchee = watchee; this.callback = callback; }
-        public String getCacheKey() throws NotCacheableException { return watchee.getCacheKey(); }
-        public InputStream getInputStream() throws IOException {
-            final InputStream is = watchee.getInputStream();
-            return new FilterInputStream(is) {
-                    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);
-                        if (ret != 1) bytesDownloaded += ret;
-                        Scheduler.add(new Task() { public void perform() throws IOException, JSExn {
-                            callback.call(N(bytesDownloaded),
-                                          N(is instanceof KnownLength ? ((KnownLength)is).getLength() : 0), null, null, 2);
-                        } });
-                        return ret;
-                    }
-                };
-        }
-    }
-
-    /** subclass from this if you want a CachedInputStream for each path */
-    public static class CachedStream extends Stream {
-        private Stream parent;
-        private boolean disk = false;
-        private String key;
-        public String getCacheKey() throws NotCacheableException { return key; }
-        CachedInputStream cis = null;
-        public CachedStream(Stream p, String s, boolean d) throws NotCacheableException {
-            this.parent = p; this.disk = d; this.key = p.getCacheKey();
-        }
-        public InputStream getInputStream() throws IOException {
-            if (cis != null) return cis.getInputStream();
-            if (!disk) {
-                cis = new CachedInputStream(parent.getInputStream());
-            } else {
-                java.io.File f = org.ibex.core.LocalStorage.Cache.getCacheFileForKey(key);
-                if (f.exists()) return new FileInputStream(f);
-                cis = new CachedInputStream(parent.getInputStream(), f);
-            }
-            return cis.getInputStream();
-        }
-    }
-}